[ { "template": "paper.html", "url": "http://arxiv.org/abs/2211.15174v1", "title": "A Guideline for Silicon Carbide MOSFET Thermal Characterization based on Source-Drain Voltage", "publishedDate": "2022-11-28T09:34:45", "content": "Thermal transient measurement based on source-drain voltage is a standard method to characterize thermal properties of silicon semiconductors but is doubtful to be directly applied to silicon carbide (SiC) devices. To evaluate its feasibility and limitations, this paper conducts a comprehensive investigation into its accuracy, resolution, and stability towards yielding the structure information of SiC MOSFET using the source-drain voltage as the temperature sensitive electrical parameter. The whole characterization process involves two main procedures and associated key testing parameters, such as gate voltages, sensing and heating currents, etc. Their impacts on both the static and dynamic performances are also investigated with the aim of providing a guideline for conducting a reproducible thermal transient measurement for SiC MOSFETs.", "doi": null, "authors": [ "Yi Zhang", "Yichi Zhang", "Zhiliang Xu", "Zhongxu Wang", "Hon Wong", "Zhebie Lu", "Antonio Caruso" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.15174v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.15174v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.05580v1", "title": "Power Cycling Test Bench for Accelerated Life Testing for Reliability Assessment of SiC-MOSFET in Extreme Offshore Environment", "publishedDate": "2020-01-15T22:21:05", "content": "The reliability of power semiconductor switches is important when considering their vital role in power electronic converters for downhole subsea applications. Respect to technology advancements in material sciences, power MOSFETs with wide band gap materials have been proposed such as silicon carbide (SiC) and gallium nitride (GaN) as an alternative to existing silicon (Si) based MOSFETs and IGBTs. However, reliability analysis should be performed before substituting SiC-MOSFETs in the place of existing Si-MOSFETs and IGBTs. Due to costly equipment of experimental test setup for accelerated life test, a good reliable and precise simulation-based test bench should be used to test the life test procedure before implementing actual hardware. Therefore, this paper introduces a power cycle (PC) test bench for accelerated life testing for reliability assessment of SiC-MOSFET in harsh offshore environment. The introduced test bench is a simulation-based of power switch in SimScape and LTspice and has been validated with datasheet of 1.2 kV SiC-MOSFET, CAS300M12BM2 by CREE. Preliminary hardware circuits are also shown for further experimental tests. The captured data from the Device-Under-Test (DUT) in different ambient temperatures are envisioned and provide critical information about the failure mechanisms and lifetime characteristics of power devices. The provided lifetime characteristics data of SiC-MOSFET can be used to statistically estimate the Remaining-Useful-Lifetime (RUL) of component in a real application such as downhole motor drives.", "doi": null, "authors": [ "Shiva Geraei", "Saeed Hasanpour Aghdam" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": "9 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2001.05580v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.05580v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1810.11452v1", "title": "Analysis and Development of SiC MOSFET Boost Converter as Solar PV Pre-regulator", "publishedDate": "2018-10-24T07:55:26", "content": "Renewable energy source such as photovoltaic (PV) cell generates power from the sun light by converting solar power to electrical power with no moving parts and less maintenance. A single photovoltaic cell produces voltage of low level. In order to boost up the voltage, a DC-DC boost converter is used. In order to use this DC-DC converter for high voltage and high frequency applications, Silicon Carbide (SiC) device is most preferred because of larger current carrying capability, higher voltage blocking capability, high operating temperature and less static and dynamic losses than the traditional silicon (Si) power switches. In the proposed work, the static and dynamic characteristics of SiC MOSFET for different temperatures are observed. A SiC MOSFET based boost converter is investigated which is powered by PV source. This DC - DC converter is controlled using a Pulse-Width Method (PWM) and the duty cycle d is calculated for tracking the maximum power point using incremental conductance algorithm of the PV systems implemented in FPGA. Simulation studies are carried out in MATLAB/SIMULINK.A prototype of the SiC converter is built and the results are verified experimentally. The performance parameters of the proposed converter such as output voltage ripple input current ripple and losses are computed and it is compared with the classical silicon (Si) MOSFET converter.", "doi": null, "authors": [ "A. Bharathi sankar", "R. Seyezhai" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mes-hall", "eess.SP", "physics.ins-det" ], "comments": "24 pages", "pdf_url": "http://arxiv.org/pdf/1810.11452v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1810.11452v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2311.07029v1", "title": "Accurate Time-segmented Loss Model for SiC MOSFETs in Electro-thermal Multi-Rate Simulation", "publishedDate": "2023-11-13T02:28:11", "content": "Compared with silicon (Si) power devices, Silicon carbide (SiC) devices have the advantages of fast switching speed and low on-resistance. However, the effects of non-ideal characteristics of SiC MOSFETs and stray parameters (especially parasitic inductance) on switching losses need to be further evaluated. In this paper, a transient loss model based on SiC MOSFET and SiC Schottky barrier diode (SBD) switching pairs is proposed. The transient process analysis is simplified by time segmentation of the transient process of power switching devices. The electro-thermal simulation calculates the junction temperature and updates the temperature-related parameters with the proposed loss model and the thermal network model. A multi-rate data exchange strategy is proposed to solve the problem of disparity in timescales between circuit simulation and thermal network simulation. The CREE CMF20120D SiC MOSFET device is used for the experimental verification. The experimental results verify the accuracy of the model which provides guidance for the circuit design of SiC MOSFETs. All the parameters of the loss model can be extracted from the datasheet, which is practical in power electronics design.", "doi": null, "authors": [ "Jialin Zheng", "Zhengming Zhao", "Han Xu", "Weicheng Liu", "Yangbin Zeng" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2311.07029v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2311.07029v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2310.17657v1", "title": "Deep Learning Algorithm for Advanced Level-3 Inverse-Modeling of Silicon-Carbide Power MOSFET Devices", "publishedDate": "2023-10-16T08:07:40", "content": "Inverse modelling with deep learning algorithms involves training deep architecture to predict device's parameters from its static behaviour. Inverse device modelling is suitable to reconstruct drifted physical parameters of devices temporally degraded or to retrieve physical configuration. There are many variables that can influence the performance of an inverse modelling method. In this work the authors propose a deep learning method trained for retrieving physical parameters of Level-3 model of Power Silicon-Carbide MOSFET (SiC Power MOS). The SiC devices are used in applications where classical silicon devices failed due to high-temperature or high switching capability. The key application of SiC power devices is in the automotive field (i.e. in the field of electrical vehicles). Due to physiological degradation or high-stressing environment, SiC Power MOS shows a significant drift of physical parameters which can be monitored by using inverse modelling. The aim of this work is to provide a possible deep learning-based solution for retrieving physical parameters of the SiC Power MOSFET. Preliminary results based on the retrieving of channel length of the device are reported. Channel length of power MOSFET is a key parameter involved in the static and dynamic behaviour of the device. The experimental results reported in this work confirmed the effectiveness of a multi-layer perceptron designed to retrieve this parameter.", "doi": null, "authors": [ "Massimo Orazio Spata", "Sebastiano Battiato", "Alessandro Ortis", "Francesco Rundo", "Michele Calabretta", "Carmelo Pino", "Angelo Messina" ], "journal": null, "tags": [ "eess.SP", "cs.AI", "cs.LG" ], "comments": "13 pages, 8 figures, to be published on Journal of Physics:\n Conference Series", "pdf_url": "http://arxiv.org/pdf/2310.17657v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2310.17657v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1711.02832v1", "title": "High-Speed Gate Driver Using GaN HEMTs for 20-MHz Hard Switching of SiC MOSFETs", "publishedDate": "2017-11-08T05:11:17", "content": "In this paper, we investigated a gate driver using a GaN HEMT push-pull configuration for the high-frequency hard switching of a SiC power MOSFET. Low on-resistance and low input capacitance of GaN HEMTs are suitable for a high-frequency gate driver from the logic level, and robustness of SiC MOSFET with high avalanche capability is suitable for a valve transistor in power converters. Our proposed gate driver consists of digital isolators, complementary Si MOSFETs, and GaN HEMTs. The GaN HEMT push-pull stage has a high driving capability owing to its superior switching characteristics, and complementary Si MOSFETs can enhance the control signal from the digital isolator. We investigated limiting factors of the switching frequency of the proposed gate driver by focusing on each circuit component and proposed an improved driving configuration for the gate driver. As a result, 20-MHz hard switching of a SiC MOSFET was achieved using the improved gate driver with GaN HEMTs.", "doi": null, "authors": [ "Takafumi Okuda", "Takashi Hikihara" ], "journal": null, "tags": [ "eess.SP" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1711.02832v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1711.02832v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2210.07417v2", "title": "Ultra-Wide Bandgap Ga$_2$O$_3$-on-SiC MOSFETs", "publishedDate": "2022-10-13T23:45:37", "content": "Ulta-wide bandgap semiconductors based on $\\beta$-Ga$_2$O$_3$ offer the potential to achieve higher power switching performance, efficiency, and lower manufacturing cost than today's wide bandgap power semiconductors. However, the most critical challenge to the commercialization of Ga$_2$O$_3$ electronics is overheating, which impacts the device's performance and reliability. We fabricated a Ga$_2$O$_3$/4H-SiC composite wafer using a fusion-bonding method. A low temperature ($\\le$ 600 $^{\\circ}$C) epitaxy and device processing approach based on low-temperature (LT) metalorganic vapor phase epitaxy is developed to grow a Ga$_2$O$_3$ epitaxial channel layer on the composite wafer and subsequently fabricate into Ga$_2$O$_3$ power MOSFETs. This LT approach is essential to preserve the structural integrity of the composite wafer. These LT-grown epitaxial Ga$_2$O$_3$ MOSFETs deliver high thermal performance (56% reduction in channel temperature), high voltage blocking capabilities up to 2.45 kV, and power figures of merit of $\\sim$ 300 MW/cm$^2$, which is a record high for any heterogeneously integrated Ga$_2$O$_3$ devices reported to date. This work is the first realization of multi-kilovolt homoepitaxial Ga$_2$O$_3$ power MOSFETs fabricated on a composite substrate with high heat transfer performance which delivers state-of-the-art power density values while running much cooler than those on native substrates. Thermal characterization and modeling results reveal that a Ga$_2$O$_3$/diamond composite wafer with a reduced Ga$_2$O$_3$ thickness ($\\sim$ 1 $\\mu$m) and thinner bonding interlayer ($<$ 10 nm) can reduce the device thermal impedance to a level lower than today's GaN-on-SiC power switches.", "doi": null, "authors": [ "Yiwen Song", "Arkka Bhattacharyya", "Anwarul Karim", "Daniel Shoemaker", "Hsien-Lien Huang", "Saurav Roy", "Craig McGray", "Jacob H. Leach", "Jinwoo Hwang", "Sriram Krishnamoorthy", "Sukwon Choi" ], "journal": null, "tags": [ "cond-mat.mtrl-sci", "physics.app-ph" ], "comments": "17 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2210.07417v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2210.07417v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2310.06184v2", "title": "A Brief Review of Single Event Burnout Failure Mechanisms and Design Tolerances of Silicon Carbide MOSFETs", "publishedDate": "2023-10-09T22:24:06", "content": "Radiation hardening of the MOSFET is of the highest priority for sustaining high-power systems in the space radiation environment. SiC-based power electronics are being looked at as a strong alternative for high power spaceborne power electronic systems. The SiC MOSFET has been shown to be most prone to SEB of the radiation effects. The knowledge of SiC MOSFET device degradation and failure mechanisms are reviewed. Additionally, the viability of rad-tolerant SiC MOSFET designs and the methods of SEB simulation are evaluated. A merit system is proposed to consider the performance of radiation tolerance and nominal electrical performance. Criteria needed for high-fidelity SEB simulation are also reviewed. This paper stands as a necessary analytical review to intercede the development of rad-hard power devices for space and extreme environment applications.", "doi": "10.3390/electronics13081414", "authors": [ "Christopher A. Grome", "Wei Ji" ], "journal": "Electronics 2024, 13, 1414", "tags": [ "physics.ins-det" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2310.06184v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2310.06184v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2201.03821v1", "title": "Dipole Scattering at the Interface: The Origin of Low Mobility observed in SiC MOSFETs", "publishedDate": "2022-01-11T07:59:48", "content": "In this work, the origin of the low free electron mobility in SiC MOSFETs is investigated using the scattering theory of two-dimensional electron gases. We first establish that neither phonon scattering nor Coulomb scattering can be the cause of the low observed mobility in SiC MOSFETs; we establish this fact by comparing the theoretically calculated mobility considering these effects with experimental observations. By considering the threshold voltages and the effective field dependence of the mobility in SiC MOSFETs, it is concluded that the scattering centers of the dominant mechanism are electrically neutral and exhibit a short-range scattering potential. By considering charge distribution around a neutral defect at the interface, it is established that an electric dipole induced by the defect can act as a short-range scattering potential. We then calculate the mobility in SiC MOSFETs assuming that there exist a high density of dipoles at the interface. The calculated dipole-scattering-limited mobility shows a similar dependence on the effective field dependence to that observed in experimental results. Thus, we conclude that scattering induced by a high density of electric dipoles at the interface is dominant cause of the low mobility in SiC MOSFETs.", "doi": "10.1063/5.0086172", "authors": [ "Tetsuo Hatakeyama", "Hirohisa Hirai", "Mitsuru Simetani", "Dai Okamoto", "Mitsuo Okamoto", "Shinsuke Harada" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "16pages, 3 figures", "pdf_url": "http://arxiv.org/pdf/2201.03821v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2201.03821v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2004.14925v1", "title": "Identification of two trapping mechanisms responsible of the threshold voltage variation in SiO$_2$/4H-SiC MOSFETs", "publishedDate": "2020-04-30T16:26:21", "content": "A non-relaxing method based on cyclic gate bias stress is used to probe the interface or near-interface traps in the SiO$_2$/4H-SiC system over the whole 4H-SiC band gap. The temperature dependent instability of the threshold voltage in lateral MOSFETs is investigated and two separated trapping mechanisms were found. One mechanism is nearly temperature independent and it is correlated to the presence of near interface oxide traps that are trapped via tunneling from the semiconductor. The second mechanism, having an activation energy of 0.1 eV, has been correlated to the presence of intrinsic defects at the SiO$_2$/4H-SiC interface.", "doi": "10.1063/5.0012399", "authors": [ "Patrick Fiorenza", "Filippo Giannazzo", "Mario Saggio", "Fabrizio Roccaforte" ], "journal": "Appl. Phys. Lett. 117, 103502 (2020)", "tags": [ "physics.app-ph", "cond-mat.mtrl-sci" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2004.14925v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2004.14925v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38937526", "title": "Growth of bulk β-Ga", "content": "We report the growth of bulk β-Ga", "journal": "Scientific reports", "issn": [ "2045-2322" ], "authors": [ "A Yoshikawa", "V Kochurikhin", "T Tomida", "I Takahashi", "K Kamada", "Y Shoji", "K Kakimoto" ], "doi": "10.1038/s41598-024-65420-7", "publishedDate": "2024-06-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38937526", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2311.07029v1", "title": "Accurate Time-segmented Loss Model for SiC MOSFETs in Electro-thermal Multi-Rate Simulation", "publishedDate": "2023-11-13T02:28:11", "content": "Compared with silicon (Si) power devices, Silicon carbide (SiC) devices have the advantages of fast switching speed and low on-resistance. However, the effects of non-ideal characteristics of SiC MOSFETs and stray parameters (especially parasitic inductance) on switching losses need to be further evaluated. In this paper, a transient loss model based on SiC MOSFET and SiC Schottky barrier diode (SBD) switching pairs is proposed. The transient process analysis is simplified by time segmentation of the transient process of power switching devices. The electro-thermal simulation calculates the junction temperature and updates the temperature-related parameters with the proposed loss model and the thermal network model. A multi-rate data exchange strategy is proposed to solve the problem of disparity in timescales between circuit simulation and thermal network simulation. The CREE CMF20120D SiC MOSFET device is used for the experimental verification. The experimental results verify the accuracy of the model which provides guidance for the circuit design of SiC MOSFETs. All the parameters of the loss model can be extracted from the datasheet, which is practical in power electronics design.", "doi": null, "authors": [ "Jialin Zheng", "Zhengming Zhao", "Han Xu", "Weicheng Liu", "Yangbin Zeng" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2311.07029v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2311.07029v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38930694", "title": "A Novel 4H-SiC Asymmetric MOSFET with Step Trench.", "content": "In this article, a silicon carbide (SiC) asymmetric MOSFET with a step trench (AST-MOS) is proposed and investigated. The AST-MOS features a step trench with an extra electron current path on one side, thereby increasing the channel density of the device. A thick oxide layer is also employed at the bottom of the step trench, which is used as a new voltage-withstanding region. Furthermore, the ratio of the gate-to-drain capacitance (", "journal": "Micromachines", "issn": [ "2072-666X" ], "authors": [ "Zhong Lan", "Yangjie Ou", "Xiarong Hu", "Dong Liu" ], "doi": "10.3390/mi15060724", "publishedDate": "2024-05-28T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38930694", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2201.03821v1", "title": "Dipole Scattering at the Interface: The Origin of Low Mobility observed in SiC MOSFETs", "publishedDate": "2022-01-11T07:59:48", "content": "In this work, the origin of the low free electron mobility in SiC MOSFETs is investigated using the scattering theory of two-dimensional electron gases. We first establish that neither phonon scattering nor Coulomb scattering can be the cause of the low observed mobility in SiC MOSFETs; we establish this fact by comparing the theoretically calculated mobility considering these effects with experimental observations. By considering the threshold voltages and the effective field dependence of the mobility in SiC MOSFETs, it is concluded that the scattering centers of the dominant mechanism are electrically neutral and exhibit a short-range scattering potential. By considering charge distribution around a neutral defect at the interface, it is established that an electric dipole induced by the defect can act as a short-range scattering potential. We then calculate the mobility in SiC MOSFETs assuming that there exist a high density of dipoles at the interface. The calculated dipole-scattering-limited mobility shows a similar dependence on the effective field dependence to that observed in experimental results. Thus, we conclude that scattering induced by a high density of electric dipoles at the interface is dominant cause of the low mobility in SiC MOSFETs.", "doi": "10.1063/5.0086172", "authors": [ "Tetsuo Hatakeyama", "Hirohisa Hirai", "Mitsuru Simetani", "Dai Okamoto", "Mitsuo Okamoto", "Shinsuke Harada" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "16pages, 3 figures", "pdf_url": "http://arxiv.org/pdf/2201.03821v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2201.03821v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38930654", "title": "A Novel Deep-Trench Super-Junction SiC MOSFET with Improved Specific On-Resistance.", "content": "In this paper, a novel 4H-SiC deep-trench super-junction MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) with a split-gate is proposed and theoretically verified by Sentaurus TCAD simulations. A deep trench filled with P-poly-Si combined with the P-SiC region leads to a charge balance effect. Instead of a full-SiC P region in conventional super-junction MOSFET, this new structure reduces the P region in a super-junction MOSFET, thus helping to lower the specific on-resistance. As a result, the figure of merit (", "journal": "Micromachines", "issn": [ "2072-666X" ], "authors": [ "Rongyao Ma", "Ruoyu Wang", "Hao Fang", "Ping Li", "Longjie Zhao", "Hao Wu", "Zhiyong Huang", "Jingyu Tao", "Shengdong Hu" ], "doi": "10.3390/mi15060684", "publishedDate": "2024-05-16T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38930654", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.05580v1", "title": "Power Cycling Test Bench for Accelerated Life Testing for Reliability Assessment of SiC-MOSFET in Extreme Offshore Environment", "publishedDate": "2020-01-15T22:21:05", "content": "The reliability of power semiconductor switches is important when considering their vital role in power electronic converters for downhole subsea applications. Respect to technology advancements in material sciences, power MOSFETs with wide band gap materials have been proposed such as silicon carbide (SiC) and gallium nitride (GaN) as an alternative to existing silicon (Si) based MOSFETs and IGBTs. However, reliability analysis should be performed before substituting SiC-MOSFETs in the place of existing Si-MOSFETs and IGBTs. Due to costly equipment of experimental test setup for accelerated life test, a good reliable and precise simulation-based test bench should be used to test the life test procedure before implementing actual hardware. Therefore, this paper introduces a power cycle (PC) test bench for accelerated life testing for reliability assessment of SiC-MOSFET in harsh offshore environment. The introduced test bench is a simulation-based of power switch in SimScape and LTspice and has been validated with datasheet of 1.2 kV SiC-MOSFET, CAS300M12BM2 by CREE. Preliminary hardware circuits are also shown for further experimental tests. The captured data from the Device-Under-Test (DUT) in different ambient temperatures are envisioned and provide critical information about the failure mechanisms and lifetime characteristics of power devices. The provided lifetime characteristics data of SiC-MOSFET can be used to statistically estimate the Remaining-Useful-Lifetime (RUL) of component in a real application such as downhole motor drives.", "doi": null, "authors": [ "Shiva Geraei", "Saeed Hasanpour Aghdam" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": "9 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2001.05580v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.05580v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38793215", "title": "Research on Single-Event Burnout Reinforcement Structure of SiC MOSFET.", "content": "In this paper, the single-event burnout (SEB) and reinforcement structure of 1200 V SiC MOSFET (SG-SBD-MOSFET) with split gate and Schottky barrier diode (SBD) embedded were studied. The device structure was established using Sentaurus TCAD, and the transient current changes of single-event effect (SEE), SEB threshold voltage, as well as the regularity of electric field peak distribution transfer were studied when heavy ions were incident from different regions of the device. Based on SEE analysis of the new structural device, two reinforcement structure designs for SEB resistance were studied, namely the expansion of the P+ body contact area and the design of a multi-layer N-type interval buffer layer. Firstly, two reinforcement schemes for SEB were analyzed separately, and then comprehensive design and analysis were carried out. The results showed that the SEB threshold voltage of heavy ions incident from the N+ source region was increased by 16% when using the P+ body contact area extension alone; when the device is reinforced with a multi-layer N-type interval buffer layer alone, the SEB threshold voltage increases by 29%; the comprehensive use of the P+ body contact area expansion and a multi-layer N-type interval buffer layer reinforcement increased the SEB threshold voltage by 33%. Overall, the breakdown voltage of the reinforced device decreased from 1632.935 V to 1403.135 V, which can be seen as reducing the remaining redundant voltage to 17%. The device's performance was not significantly affected.", "journal": "Micromachines", "issn": [ "2072-666X" ], "authors": [ "Qiulan Liao", "Hongxia Liu" ], "doi": "10.3390/mi15050642", "publishedDate": "2024-05-09T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38793215", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2107.10408v1", "title": "Temperature dependence of on-state inter-terminal capacitances (Cgd and Cgs) of SiC MOSFETs and frequency limitations of their measurements", "publishedDate": "2021-07-22T00:35:44", "content": "Inter-terminal capacitances (ITCs) have major influence on the dynamic performance of power SiC MOSFETs. Knowledge of the exact values for the ITCs is required in order to perform accurate and predictive compact model simulations of their dynamic performance. Since commercial SiC MOSFETs are capable of operating in a wide range of temperatures, it is important to know the values of ITCs in the whole temperature range of operation. Direct measurements of the ITCs with standard equipment is possible only at low current levels (i.e. in the off-state (Vgs < Vth) for Vds > 0 V), however their values in the on-state (Vgs>Vth) also influence the MOSFETs switching performance. In this work, ITCs of a planar SiC MOSFET in the on-state are studied by the means of a calibrated TCAD model, revealing substantial temperature dependence in the range of 300-450 K. In the first approximation, this temperature dependence of the ITCs can be explained by a weaker temperature dependence of the MOSFET channel resistance in comparison to its JFET and epitaxial layer resistances. In addition, it is shown that at high frequencies stray inductances of the TO-247-3 package result in a change of the extracted values of the on-state ITCs. This effect is already notable at 1 MHz.", "doi": null, "authors": [ "Alexander Tsibizov", "Roger Stark", "Ulrike Grossner" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "5 pages, 5 figures, accepted to VIRTUAL ISSUE ON SIC 2020 (The 13th\n European Conference on Silicon Carbide and Related Materials (ECSCRM\n 2020-2021))", "pdf_url": "http://arxiv.org/pdf/2107.10408v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2107.10408v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38675307", "title": "The Effects of a Gate Bias Condition on 1.2 kV SiC MOSFETs during Irradiating Gamma-Radiation.", "content": "We investigated the effects of gate bias regarding the degradation of electrical characteristics during gamma irradiation. Moreover, we observed the punch through failure of 1.2 kV rated commercial Silicon Carbide (SiC) Metal Oxide Semiconductor Field Effect Transistors (MOSFETs) due to the influence of gate bias. In addition, the threshold voltage (V", "journal": "Micromachines", "issn": [ "2072-666X" ], "authors": [ "Chaeyun Kim", "Hyowon Yoon", "Yeongeun Park", "Sangyeob Kim", "Gyuhyeok Kang", "Dong-Seok Kim", "Ogyun Seok" ], "doi": "10.3390/mi15040496", "publishedDate": "2024-04-02T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38675307", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1711.02832v1", "title": "High-Speed Gate Driver Using GaN HEMTs for 20-MHz Hard Switching of SiC MOSFETs", "publishedDate": "2017-11-08T05:11:17", "content": "In this paper, we investigated a gate driver using a GaN HEMT push-pull configuration for the high-frequency hard switching of a SiC power MOSFET. Low on-resistance and low input capacitance of GaN HEMTs are suitable for a high-frequency gate driver from the logic level, and robustness of SiC MOSFET with high avalanche capability is suitable for a valve transistor in power converters. Our proposed gate driver consists of digital isolators, complementary Si MOSFETs, and GaN HEMTs. The GaN HEMT push-pull stage has a high driving capability owing to its superior switching characteristics, and complementary Si MOSFETs can enhance the control signal from the digital isolator. We investigated limiting factors of the switching frequency of the proposed gate driver by focusing on each circuit component and proposed an improved driving configuration for the gate driver. As a result, 20-MHz hard switching of a SiC MOSFET was achieved using the improved gate driver with GaN HEMTs.", "doi": null, "authors": [ "Takafumi Okuda", "Takashi Hikihara" ], "journal": null, "tags": [ "eess.SP" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1711.02832v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1711.02832v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38675272", "title": "A Novel Asymmetric Trench SiC Metal-Oxide-Semiconductor Field-Effect Transistor with a Poly-Si/SiC Heterojunction Diode for Optimizing Reverse Conduction Performance.", "content": "In this paper, a novel asymmetric trench SiC MOSFET with a Poly-Si/SiC heterojunction diode (HJD-ATMOS) is designed to improve its reverse conduction characteristics and switching performance. This structure features an integrated heterojunction diode, which improves body diode characteristics without affecting device static characteristics. The heterojunction diode acts as a freewheeling diode during reverse conduction, reducing the cut-in voltage (", "journal": "Micromachines", "issn": [ "2072-666X" ], "authors": [ "Yiren Yu", "Zijun Cheng", "Yi Hu", "Ruiyi Lv", "Shengdong Hu" ], "doi": "10.3390/mi15040461", "publishedDate": "2024-03-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38675272", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2009.04835v1", "title": "Understanding the role of threading dislocations on 4H-SiC MOSFET breakdown under high temperature reverse bias stress", "publishedDate": "2020-09-10T13:20:41", "content": "The origin of dielectric breakdown was studied on 4H-SiC MOSFETs that failed after three months of high temperature reverse bias (HTRB) stress. A local inspection of the failed devices demonstrated the presence of a threading dislocation (TD) at the breakdown location. The nanoscale origin of the dielectric breakdown was highlighted with advanced high-spatial-resolution scanning probe microscopy (SPM) techniques. In particular, SPM revealed the conductive nature of the TD and a local increase of the minority carrier concentration close to the defect. Numerical simulations estimated a hole concentration 13 orders of magnitude larger than in the ideal 4H-SiC crystal. The hole injection in specific regions of the device explained the failure of the gate oxide under stress. In this way, the key role of the TD in the dielectric breakdown of 4H-SiC MOSFET was unambiguously demonstrated.", "doi": "10.1088/1361-6528/ab5ff6", "authors": [ "P. Fiorenza", "M. Alessandrino", "B. Carbone", "C. Di Martino", "A. Russo", "M. Saggio", "C. Venuto", "E. Zanetti", "F. Giannazzo", "F. Roccaforte" ], "journal": "Nanotechnology 31, (2020) 125203", "tags": [ "physics.app-ph", "cond-mat.mtrl-sci" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2009.04835v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2009.04835v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38673265", "title": "4H-SiC MOSFET Threshold Voltage Instability Evaluated via Pulsed High-Temperature Reverse Bias and Negative Gate Bias Stresses.", "content": "This paper presents a reliability study of a conventional 650 V SiC planar MOSFET subjected to pulsed HTRB (High-Temperature Reverse Bias) stress and negative HTGB (High-Temperature Gate Bias) stress defined by a TCAD static simulation showing the electric field distribution across the SiC/SiO", "journal": "Materials (Basel, Switzerland)", "issn": [ "1996-1944" ], "authors": [ "Laura Anoldo", "Edoardo Zanetti", "Walter Coco", "Alfio Russo", "Patrick Fiorenza", "Fabrizio Roccaforte" ], "doi": "10.3390/ma17081908", "publishedDate": "2024-04-17T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38673265", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2310.06184v2", "title": "A Brief Review of Single Event Burnout Failure Mechanisms and Design Tolerances of Silicon Carbide MOSFETs", "publishedDate": "2023-10-09T22:24:06", "content": "Radiation hardening of the MOSFET is of the highest priority for sustaining high-power systems in the space radiation environment. SiC-based power electronics are being looked at as a strong alternative for high power spaceborne power electronic systems. The SiC MOSFET has been shown to be most prone to SEB of the radiation effects. The knowledge of SiC MOSFET device degradation and failure mechanisms are reviewed. Additionally, the viability of rad-tolerant SiC MOSFET designs and the methods of SEB simulation are evaluated. A merit system is proposed to consider the performance of radiation tolerance and nominal electrical performance. Criteria needed for high-fidelity SEB simulation are also reviewed. This paper stands as a necessary analytical review to intercede the development of rad-hard power devices for space and extreme environment applications.", "doi": "10.3390/electronics13081414", "authors": [ "Christopher A. Grome", "Wei Ji" ], "journal": "Electronics 2024, 13, 1414", "tags": [ "physics.ins-det" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2310.06184v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2310.06184v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38398982", "title": "Novel SiC Trench MOSFET with Improved Third-Quadrant Performance and Switching Speed.", "content": "A SiC double-trench MOSFET embedded with a lower-barrier diode and an L-shaped gate-source in the gate trench, showing improved reverse conduction and an improved switching performance, was proposed and studied with 2-D simulations. Compared with a double-trench MOSFET (DT-MOS) and a DT-MOS with a channel-MOS diode (DTC-MOS), the proposed MOS showed a lower voltage drop (", "journal": "Micromachines", "issn": [ "2072-666X" ], "authors": [ "Yangjie Ou", "Zhong Lan", "Xiarong Hu", "Dong Liu" ], "doi": "10.3390/mi15020254", "publishedDate": "2024-01-23T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38398982", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1810.11452v1", "title": "Analysis and Development of SiC MOSFET Boost Converter as Solar PV Pre-regulator", "publishedDate": "2018-10-24T07:55:26", "content": "Renewable energy source such as photovoltaic (PV) cell generates power from the sun light by converting solar power to electrical power with no moving parts and less maintenance. A single photovoltaic cell produces voltage of low level. In order to boost up the voltage, a DC-DC boost converter is used. In order to use this DC-DC converter for high voltage and high frequency applications, Silicon Carbide (SiC) device is most preferred because of larger current carrying capability, higher voltage blocking capability, high operating temperature and less static and dynamic losses than the traditional silicon (Si) power switches. In the proposed work, the static and dynamic characteristics of SiC MOSFET for different temperatures are observed. A SiC MOSFET based boost converter is investigated which is powered by PV source. This DC - DC converter is controlled using a Pulse-Width Method (PWM) and the duty cycle d is calculated for tracking the maximum power point using incremental conductance algorithm of the PV systems implemented in FPGA. Simulation studies are carried out in MATLAB/SIMULINK.A prototype of the SiC converter is built and the results are verified experimentally. The performance parameters of the proposed converter such as output voltage ripple input current ripple and losses are computed and it is compared with the classical silicon (Si) MOSFET converter.", "doi": null, "authors": [ "A. Bharathi sankar", "R. Seyezhai" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mes-hall", "eess.SP", "physics.ins-det" ], "comments": "24 pages", "pdf_url": "http://arxiv.org/pdf/1810.11452v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1810.11452v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38258211", "title": "A Novel 6500 V SiC Trench MOSFET with Integrated Unipolar Diode for Improved Third Quadrant and Switching Characteristics.", "content": "A 6500 V SiC trench MOSFET with integrated unipolar diode (UD-MOS) is proposed to improve reverse conduction characteristics, suppress bipolar degradation, and reduce switching loss. An N type base region under the trench dummy gate provides a low barrier path to suppress hole injection during the reverse conduction operation. The reverse conduction voltage", "journal": "Micromachines", "issn": [ "2072-666X" ], "authors": [ "Hao Wu", "Xuan Li", "Xiaochuan Deng", "Yangyang Wu", "Jiawei Ding", "Wensong Peng", "Bo Zhang" ], "doi": "10.3390/mi15010092", "publishedDate": "2023-12-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38258211", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.15174v1", "title": "A Guideline for Silicon Carbide MOSFET Thermal Characterization based on Source-Drain Voltage", "publishedDate": "2022-11-28T09:34:45", "content": "Thermal transient measurement based on source-drain voltage is a standard method to characterize thermal properties of silicon semiconductors but is doubtful to be directly applied to silicon carbide (SiC) devices. To evaluate its feasibility and limitations, this paper conducts a comprehensive investigation into its accuracy, resolution, and stability towards yielding the structure information of SiC MOSFET using the source-drain voltage as the temperature sensitive electrical parameter. The whole characterization process involves two main procedures and associated key testing parameters, such as gate voltages, sensing and heating currents, etc. Their impacts on both the static and dynamic performances are also investigated with the aim of providing a guideline for conducting a reproducible thermal transient measurement for SiC MOSFETs.", "doi": null, "authors": [ "Yi Zhang", "Yichi Zhang", "Zhiliang Xu", "Zhongxu Wang", "Hon Wong", "Zhebie Lu", "Antonio Caruso" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.15174v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.15174v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38258154", "title": "A Two-Dimensional Computer-Aided Design Study of Unclamped Inductive Switching in an Improved 4H-SiC VDMOSFET.", "content": "Due to its high thermal conductivity, high critical breakdown electric field, and high power, the silicon carbide (SiC) metal-oxide-semiconductor field-effect transistor (MOSFET) has been generally used in industry. In industrial applications, a common reliability problem in SiC MOSFET is avalanche failure. For applications in an avalanche environment, an improved, vertical, double-diffused MOSFET (VDMOSFET) device has been proposed. In this article, an unclamped inductive switching (UIS) test circuit has been built using the Mixed-Mode simulator in the TCAD simulation software, and the simulation results for UIS are introduced for a proposed SiC-power VDMOSFET by using Sentaurus TCAD simulation software. The simulation results imply that the improved VDMOSFET has realized a better UIS performance compared with the conventional VDMOSFET with a buffer layer (B-VDMOSFET) in the same conditions. Meanwhile, at room temperature, the modified VDMOSFET has a smaller on-resistance (R", "journal": "Micromachines", "issn": [ "2072-666X" ], "authors": [ "Xinfeng Nie", "Ying Wang", "Chenghao Yu", "Xinxing Fei", "Jianqun Yang", "Xingji Li" ], "doi": "10.3390/mi15010035", "publishedDate": "2023-12-21T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38258154", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2010.09485v1", "title": "Determination of the Interface between Amorphous Insulator and Crystalline 4H-SiC in Transmission Electron Microscope Image by using Convolutional Neural Network", "publishedDate": "2020-10-14T08:28:01", "content": "A rough interface seems to be one of the possible reasons for low channel mobility (conductivity) in SiC MOSFETs. To evaluate the mobility by interface roughness, we drew a boundary line between amorphous insulator and crystalline 4H-SiC in a cross-sectional image obtained by a transmission electron microscope (TEM), by using the deep learning approach of convolutional neural network (CNN). We show that the CNN model recognizes the interface very well, even when the interface is too rough to draw the boundary line manually. Power spectral density of interface roughness was calculated.", "doi": "10.1063/5.0036982", "authors": [ "Hironori Yoshioka", "Tomonori Honda" ], "journal": "AIP Advances 11, 015101 (2021)", "tags": [ "cond-mat.mtrl-sci", "cond-mat.dis-nn", "cs.LG" ], "comments": "16 pages, 8 figures", "pdf_url": "http://arxiv.org/pdf/2010.09485v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2010.09485v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38394811", "title": "Emission characteristics of pulse CNT cold cathode X-ray source combined with channel electron multiplier.", "content": "Carbon nanotube (CNT)-based field emission X-ray source with the advantage of fast start-up response offers the chance to achieve high-frequency X-ray emission. In this study, a high-frequency random pulse X-ray source of CNT cold cathode combined with a channel electron multiplier (CEM) was built, and its direct current (DC) and pulse emission characteristics were tested. The DC measurement results were used for parameter selection for performing pulse experiments. During the DC test, with the conditions of 2.2 kV CEM bias voltage and 25 kV anode voltage, the anode currents are 141, 250, and 300 μA at grid voltages of 290, 387.6, and 432.2 V, respectively; the corresponding grid field values are 1.45, 1.94, and 2.16 V/μm. During the pulse test, the amplitude-frequency response of the X-ray source reaches 3.58 MHz at 3 dB. The developed pulse X-ray source was introduced into the X-ray communication (XCOM), and the experimental communication rate reached 6 Mbps with the bit-error-rate of 1.1 × 10", "journal": "Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine", "issn": [ "1872-9800" ], "authors": [ "Kai Miao", "Yunpeng Liu", "Sheng Lai", "Junqiu Yin", "Feixu Xiong", "Xiaoyu Dong", "Xiaobin Tang" ], "doi": "10.1016/j.apradiso.2024.111243", "publishedDate": "2024-02-18T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38394811", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2203.04701v1", "title": "Millisecond Time-Scale Measurements of Heat Transfer to Confined He II", "publishedDate": "2022-03-09T13:24:28", "content": "We explore transient heat transfer, on the millisecond time-scale, from a narrow, rectangular stainless steel heater cooled from one side by He II confined to a channel of 120 $\\mu$m depth. The helium is isolated from the external bath with the exception of two pin-holes of cross section about 10% that of the channel. We measure the temperatures of both the heater strip and the channel helium during slow-pulse heating that reaches peak power after 9 ms, fast-pulse heating that reaches peak power after 100 $\\mu$s, and step heating that reaches steady power after 100 $\\mu$s. Using the steady state Kapitza heat transfer expression at the interface between heater and helium, and the Gorter-Mellink heat transfer regime in the helium channel, we obtain excellent agreement between simulation and measurement during the first 5 ms of slow-pulse tests. Using instead the measured helium temperature in the Kapitza expression, we obtain excellent agreement between the simulated and measured heater response during the first 150 ms of slow-pulse tests. The same model fails to explain the fast-pulse transient response of the heater and helium, while it can explain the helium response to a step in applied power but not the heater response. The steady state Kapitza expression may therefore not be applicable to heating events that are over within a single millisecond.", "doi": null, "authors": [ "Jonas Blomberg Ghini", "Bernhard Auchmann", "Bertrand Baudouy" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2203.04701v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2203.04701v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/37512669", "title": "Development and Performance Evaluation of Integrated Hybrid Power Module for Three-Phase Servo Motor Applications.", "content": "This study aims to develop a 30 kHz/12 kW silicon carbide (SiC)/Si integrated hybrid power module (iHPM) for variable frequency drive applications, particularly industrial servo motor control, and, additionally, to theoretically and experimentally assess its dynamic characteristics and efficiency during operation. This iHPM integrates a brake circuit, a three-phase Si rectifier, and a three-phase SiC inverter within a single package to achieve a minimal current path. A space-vector pulse width modulation (SVPWM) scheme is used to control the inverter power switches. In order to reduce parasitic inductance and power loss, an inductance cancellation design is implemented in the Si rectifier and SiC inverter. The switching transients and their parasitic effects during a three-phase operation are assessed through an electromagnetic-circuit co-simulation model, by which the power loss and efficiency of the iHPM are estimated. The modeled parasitic inductance of the inverter is validated through inductance measurement, and the effectiveness of the simulated results in terms of switching transients and efficiency is verified using the experimental results of the double pulse test and open-loop inverter operation, respectively. In addition, the power loss and efficiency of the SiC MOSFET inverter are experimentally compared against those of a commercial Si IGBT inverter.", "journal": "Micromachines", "issn": [ "2072-666X" ], "authors": [ "Hsien-Chie Cheng", "Yan-Cheng Liu", "Hsin-Han Lin", "Shian-Chiau Chiou", "Chih-Ming Tzeng", "Tao-Chih Chang" ], "doi": "10.3390/mi14071356", "publishedDate": "2023-06-29T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/37512669", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2406.08701v1", "title": "Impacts of Backside Insulation on the Dynamic On-Resistance of Lateral p-GaN HEMTs-on-Si", "publishedDate": "2024-06-12T23:58:41", "content": "We examined the effect of backside insulation on the dynamic on-resistance of lateral p-GaN HEMTs. To gain a comprehensive understanding of the dynamic onresistance difference between substrate grounded and substrate floating p-GaN HEMTs, we conducted in-circuit double pulse testing and long-term direct current (DC) bias stress. We have realized that while backside insulation can enhance the breakdown voltage of lateral p-GaN HEMTs, it also comes with a tradeoff in device reliability. Results through Sentaurus TCAD simulation suggest that the use of backside insulation in devices gradually disperses potential to the buffer barrier. As a result, the potential barrier at the buffer edge of the 2DEG channel decreases significantly, leading to considerable electron trappings at buffer traps. This breakdown voltage and reliability tradeoff also applies to HEMT technologies using insulating substrates.", "doi": null, "authors": [ "Yu-Xuan Wang", "Mao-Chou Tai", "Ting-Chang Chang", "Wei-Chen Huang", "Zeyu Wan", "Simon Li", "Simon Sze", "Guangrui Xia" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2406.08701v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2406.08701v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/37241512", "title": "Diatomites from the Iberian Peninsula as Pozzolans.", "content": "The object of this work is to study and characterize diatomites from the southeast of the Iberian Peninsula to establish their character and quality as natural pozzolans. This research carried out a morphological and chemical characterization study of the samples using SEM and XRF. Subsequently, the physical properties of the samples were determined, including thermic treatment, Blaine particle finesse, real density and apparent density, porosity, volume stability, and the initial and final setting times. Finally, a detailed study was conducted to establish the technical properties of the samples through chemical analysis of technological quality, chemical analysis of pozzolanicity, mechanical compressive strength tests at 7, 28, and 90 days, and a non-destructive ultrasonic pulse test. The results using SEM and XRF show that the samples are composed entirely of colonies of diatoms whose bodies are formed by silica between 83.8 and 89.99% and CaO between 5.2 and 5.8%. Likewise, this indicates a remarkable reactivity of the SiO", "journal": "Materials (Basel, Switzerland)", "issn": [ "1996-1944" ], "authors": [ "Jorge L Costafreda", "Domingo A Martín", "Beatriz Astudillo", "Leticia Presa", "José Luis Parra", "Miguel A Sanjuán" ], "doi": "10.3390/ma16103883", "publishedDate": "2023-05-21T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/37241512", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2004.14887v1", "title": "Lattice Boltzmann method for computational aeroacoustics on non-uniform meshes: a direct grid coupling approach", "publishedDate": "2020-04-30T15:40:03", "content": "The present study proposes a highly accurate lattice Boltzmann direct coupling cell-vertex algorithm, well suited for industrial purposes, making it highly valuable for aeroacoustic applications. It is indeed known that the convection of vortical structures across a grid refinement interface, where cell size is abruptly doubled, is likely to generate spurious noise that may corrupt the solution over the whole computational domain. This issue becomes critical in the case of aeroacoustic simulations, where accurate pressure estimations are of paramount importance. Consequently, any interfering noise that may pollute the acoustic predictions must be reduced. The proposed grid refinement algorithm differs from conventionally used ones, in which an overlapping mesh layer is considered. Instead, it provides a direct connection allowing a tighter link between fine and coarse grids, especially with the use of a coherent equilibrium function shared by both grids. Moreover, the direct coupling makes the algorithm more local and prevents the duplication of points, which might be detrimental for massive parallelization. This work follows our first study (Astoul~\\textit{et al. 2020}) on the deleterious effect of non-hydrodynamic modes crossing mesh transitions, which can be addressed using an appropriate collision model. The Hybrid Recursive Regularized model is then used for this study. The grid coupling algorithm is assessed and compared to a widely-used cell-vertex algorithm on an acoustic pulse test case, a convected vortex and a turbulent circular cylinder wake flow at high Reynolds number.", "doi": null, "authors": [ "Thomas Astoul", "Gauthier Wissocq", "Jean-françois Boussuge", "Alois Sengissen", "Pierre Sagaut" ], "journal": null, "tags": [ "physics.comp-ph", "physics.flu-dyn" ], "comments": "also submitted to Journal of Computational Physics", "pdf_url": "http://arxiv.org/pdf/2004.14887v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2004.14887v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/35479928", "title": "Size-controlled synthesis of porous ZnSnO", "content": "During the detection of formaldehyde, sensitivity and selectivity is still a challenging issue for most reported gas sensors. Herein, an alternative formaldehyde chemosensor that is based on porous ZnSnO", "journal": "RSC advances", "issn": [ "2046-2069" ], "authors": [ "Jiaoling Zheng", "Huanhuan Hou", "Hao Fu", "Liping Gao", "Hongjie Liu" ], "doi": "10.1039/d1ra01852c", "publishedDate": "2021-05-07T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/35479928", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/35208437", "title": "Power Performance Comparison of SiC-IGBT and Si-IGBT Switches in a Three-Phase Inverter for Aircraft Applications.", "content": "The converters used to integrate the ground power station of planes with the utility grid are generally created with silicon-insulated gate bipolar transistor (Si-IGBT)-based semiconductor technologies. The Si-IGBT switch-based converters are inefficient, oversized, and have trouble achieving pure sine wave voltages requirements. The efficiency of the aircraft ground power units (AGPU) can be increased by replacing existing Si-IGBT transistors with silicon carbide (SiC) IGBTs because of the physical constraints of Si-IGBT switches. The primary purpose of this research was to prove that the efficiency increase could be obtained in the case of using SiC-IGBTs in conventional AGPU systems with the realized experimental studies. In this study, three different experimental systems were discussed for this purpose. The first system was the traditional APGU system. The other two systems were single-phase test (SPT) and three-phase inverter systems, respectively. The SPT system and three-phase inverter systems were designed and implemented to compare and make analyses of Si-IGBTs and SiC-IGBTs performance. The efficiency and detailed hard switching behavior comparison were performed between the 1200-V SiC-IGBT- and 1200-V Si-IGBT-based experimental systems. The APGU system and Si-IGBT modules were examined, the switching characteristic and efficiency of the system were obtained in the first experimental study. The second experimental study was carried out on the SPT system. The single-pulse test system was created using Si-IGBTs and SiC-IGBTs switches in the second experimental system. The third experiment included a three-phase-inverter-based test system. The system was created with Si-IGBTs and SiC-IGBTs to compare the two different switch-based inverters under RL loads. The turning off and turning on processes of the IGBT switches were examined and the results were presented. The Si-IGBT efficiency was 77% experimentally in the SPT experimental system. The efficiency of the third experimental system was increased up to 95% by replacing the old Si transistor with a SiC. The efficiency of the three-phase Si-IGBT-based system was 86% for the six-switch case. The efficiencies of the SiC-IGBT-based system were increased to around 92% in the three-phase inverter system experimentally. The findings of the experimental results demonstrated that the SiC-IGBT had a faster switching speed and a smaller loss than the classical Si-IGBT. As a result of the experimental studies, the efficiency increase that could be obtained in the case of using SiC-IGBTs in conventional AGPU systems was revealed.", "journal": "Micromachines", "issn": [ "2072-666X" ], "authors": [ "Ibrahim A S Abdalgader", "Sinan Kivrak", "Tolga Özer" ], "doi": "10.3390/mi13020313", "publishedDate": "2022-02-04T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/35208437", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/34890853", "title": "A predictive model of organic acids separation by chromatography with strong anionic resins in sulfate form.", "content": "Organic acids commonly have quite symmetrical chromatography profiles at low pH (< 1.5) with strong anionic resins, but a significant tailing can be observed with succinic and citric acids. Classical adsorption models, like the Langmuir model, fail to predict this behavior, which can have a major influence on mean retention times and profile shapes, therefore on chromatography performances. A new retention model was developed to better predict organic acid separation with strong anionic resin. This model combines a refined Langmuir adsorption model and an ion-exchange model. Organic acid adsorption is assumed to be due to hydrogen bonding with sulfate and hydrogen sulfate counter-anions on the resin. The adsorption capacity depends mostly on molecular size: up to sixteen formic acid molecules could be adsorbed per counter-anions, meanwhile only two succinic acid or one citric acid molecules could be adsorbed. This adsorption model was then embedded in a generic and accurate modeling approach (continuous column with mass balance equations solved by the conservation element/solution element (CE/SE) method). All parameters of this column model were identified by fitting the simulation to experimental results (equilibrium curves and pulse tests). Then, the column model was validated with original experimental results from a binary mixture pulse test (formic and succinic acids). Results show that simulations are much more predictive for multi-component pulse tests, both in terms of profile shape and retention time, which cannot be captured without considering ion-exchange.", "journal": "Journal of chromatography. A", "issn": [ "1873-3778" ], "authors": [ "Wuyang Zhong", "Patrick Perre", "Fanny Duval", "Julien Lemaire" ], "doi": "10.1016/j.chroma.2021.462671", "publishedDate": "2021-11-02T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/34890853", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/34585847", "title": "Electrode-Less MnO", "content": "Electrode materials are key components in typical batteries, where the electrodes are generally fabricated onto current collectors in solid forms and are isolated by a separator. However, the preparation of the electrodes increases the fabrication complexity, which speeds down their large-scale production. Here, series of static electrode-less MnO", "journal": "Small (Weinheim an der Bergstrasse, Germany)", "issn": [ "1613-6829" ], "authors": [ "Mingming Wang", "Na Chen", "Zhengxin Zhu", "Yahan Meng", "Chunyue Shen", "Xinhua Zheng", "Dongsheng Liang", "Wei Chen" ], "doi": "10.1002/smll.202103921", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/34585847", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/33648135", "title": "A reliable voltage clamping submodule based on SiC MOSFET for solid state switch.", "content": "The electron cyclotron resonance heating system is one of the most effective plasma heating systems for controlled nuclear fusion. The key part of the system called gyrotron is driven by a high voltage power supply with a rated output power of hundreds of kilowatts. When the system is in operation, breakdowns frequently occur in the gyrotron. During breakdowns, the gyrotron will endure a large volume of energy and may be damaged. A solid-state switch is required to protect it by blocking high voltage (∼40 kV) within 10 microseconds and limiting energy within a few joules. Compared with Si IGBT/MOSFET, SiC MOSFET with higher switching speed is more suitable for the switch. However, rapid switching speed exacerbates the voltage imbalance. To solve the problems, a reliable module named Advanced Chopper Sub-Model based on SiC MOSFETs for a solid-state switch is proposed. The module adopts a voltage-clamped circuit to achieve the capabilities of rapid switching-off speed, as well as low overvoltage and good voltage balancing. In addition, modules connected in series can tolerate large driver time delay. The SPICE simulation and the double-pulse test are used to validate the effectiveness of the proposed module. The protection performance test was also conducted by using a spark gap to simulate the breakdown fault. Finally, the switch that consists of 64 series-connected modules has been tested at 30 kV/6 A. The turn-off time is ∼5 µs, and the energy during the turn-off transition is 0.283 J. The results show that the switch has good performance.", "journal": "The Review of scientific instruments", "issn": [ "1089-7623" ], "authors": [ "Shaoxiang Ma", "Wentong Shang", "Dongyu Wang", "Ming Zhang", "Bangyou Zhu", "Kexun Yu", "Yuan Pan" ], "doi": "10.1063/5.0027135", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/33648135", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/33175243", "title": "Robust and Latch-Up-Immune LVTSCR Device with an Embedded PMOSFET for ESD Protection in a 28-nm CMOS Process.", "content": "Low-voltage-triggered silicon-controlled rectifier (LVTSCR) is expected to provide an electrostatic discharge (ESD) protection for a low-voltage integrated circuit. However, it is normally vulnerable to the latch-up effect due to its extremely low holding voltage. In this paper, a novel LVTSCR embedded with an extra p-type MOSFET called EP-LVTSCR has been proposed and verified in a 28-nm CMOS technology. The proposed device possesses a lower trigger voltage of ~ 6.2 V and a significantly higher holding voltage of ~ 5.5 V with only 23% degradation of the failure current under the transmission line pulse test. It is also shown that the EP-LVTSCR operates with a lower turn-on resistance of ~ 1.8 Ω as well as a reliable leakage current of ~ 1.8 nA measured at 3.63 V, making it suitable for ESD protections in 2.5 V/3.3 V CMOS processes. Moreover, the triggering mechanism and conduction characteristics of the proposed device were explored and demonstrated with TCAD simulation.", "journal": "Nanoscale research letters", "issn": [ "1931-7573" ], "authors": [ "Ruibo Chen", "Hongxia Liu", "Wenqiang Song", "Feibo Du", "Hao Zhang", "Jikai Zhang", "Zhiwei Liu" ], "doi": "10.1186/s11671-020-03437-3", "publishedDate": "2020-10-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/33175243", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/33141146", "title": "Cortical disinhibition in Parkinson's disease.", "content": "In Parkinson's disease, striatal dopamine depletion produces profound alterations in the neural activity of the cortico-basal ganglia motor loop, leading to dysfunctional motor output and parkinsonism. A key regulator of motor output is the balance between excitation and inhibition in the primary motor cortex, which can be assessed in humans with transcranial magnetic stimulation techniques. Despite decades of research, the functional state of cortical inhibition in Parkinson's disease remains uncertain. Towards resolving this issue, we applied paired-pulse transcranial magnetic stimulation protocols in 166 patients with Parkinson's disease (57 levodopa-naïve, 50 non-dyskinetic, 59 dyskinetic) and 40 healthy controls (age-matched with the levodopa-naïve group). All patients were studied OFF medication. All analyses were performed with fully automatic procedures to avoid confirmation bias, and we systematically considered and excluded several potential confounding factors such as age, gender, resting motor threshold, EMG background activity and amplitude of the motor evoked potential elicited by the single-pulse test stimuli. Our results show that short-interval intracortical inhibition is decreased in Parkinson's disease compared to controls. This reduction of intracortical inhibition was obtained with relatively low-intensity conditioning stimuli (80% of the resting motor threshold) and was not associated with any significant increase in short-interval intracortical facilitation or intracortical facilitation with the same low-intensity conditioning stimuli, supporting the involvement of cortical inhibitory circuits. Short-interval intracortical inhibition was similarly reduced in levodopa-naïve, non-dyskinetic and dyskinetic patients. Importantly, intracortical inhibition was reduced compared to control subjects also on the less affected side (n = 145), even in de novo drug-naïve patients in whom the less affected side was minimally symptomatic (lateralized Unified Parkinson's Disease Rating Scale part III = 0 or 1, n = 23). These results suggest that cortical disinhibition is a very early, possibly prodromal feature of Parkinson's disease.", "journal": "Brain : a journal of neurology", "issn": [ "1460-2156" ], "authors": [ "Claudia Ammann", "Michele Dileone", "Cristina Pagge", "Valentina Catanzaro", "David Mata-Marín", "Frida Hernández-Fernández", "Mariana H G Monje", "Álvaro Sánchez-Ferro", "Beatriz Fernández-Rodríguez", "Carmen Gasca-Salas", "Jorge U Máñez-Miró", "Raul Martínez-Fernández", "Lydia Vela-Desojo", "Fernando Alonso-Frech", "Antonio Oliviero", "José A Obeso", "Guglielmo Foffani" ], "doi": "10.1093/brain/awaa274", "publishedDate": "2020-07-08T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/33141146", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/6xur", "title": "RNA dodecamer with a 6-hydrazino-2-aminopurine modified base", "content": "Thioguanosine Conversion Enables mRNA-Lifetime Evaluation by RNA Sequencing Using Double Metabolic Labeling (TUC-seq DUAL). - Ennifar E, Micura R, Gasser C, Brillet K Angew Chem Int Ed Engl (59) 6881-6886 (2020)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/6xur_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/6xur", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/6xus", "title": "RNA dodecamer with a 6-hydrazino-2-aminopurine modified base", "content": "Thioguanosine Conversion Enables mRNA-Lifetime Evaluation by RNA Sequencing Using Double Metabolic Labeling (TUC-seq DUAL). - Ennifar E, Micura R, Gasser C, Brillet K Angew Chem Int Ed Engl (59) 6881-6886 (2020)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/6xus_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/6xus", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2003.00220v1", "title": "Effective Localization Using Double Ideal Quotient and Its Implementation", "publishedDate": "2020-02-29T09:40:12", "content": "In this paper, we propose a new method for localization of polynomial ideal, which we call \"Local Primary Algorithm\". For an ideal $I$ and a prime ideal $P$, our method computes a $P$-primary component of $I$ after checking if $P$ is associated with $I$ by using \"double ideal quotient\" $(I:(I:P))$ and its variants which give us a lot of information about localization of $I$.", "doi": "10.1007/978-3-319-99639-4_19", "authors": [ "Yuki Ishihara", "Kazuhiro Yokoyama" ], "journal": "Proc. CASC 2018, LNCS 11077, pp.272-287, Springer 2018", "tags": [ "math.AC", "cs.SC" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2003.00220v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2003.00220v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331138", "title": "The plant early recombinosome: a high security complex to break DNA during meiosis.", "content": "The formacion of numerous unpredictable DNA Double Strand Breaks (DSBs) on chromosomes iniciates meiotic recombination. In this perspective, we propose a 'multi-key lock' model to secure the risky but necesary breaks as well as a 'one per pair of cromatids' model for the topoisomerase-like early recombinosome. During meiosis, homologous chromosomes recombine at few sites of crossing-overs (COs) to ensure correct segregation. The initiation of meiotic recombination involves the formation of DNA double strand breaks (DSBs) during prophase I. Too many DSBs are dangerous for genome integrity: if these DSBs are not properly repaired, it could potentially lead to chromosomal fragmentation. Too few DSBs are also problematic: if the obligate CO cannot form between bivalents, catastrophic unequal segregation of univalents lead to the formation of sterile aneuploid spores. Research on the regulation of the formation of these necessary but risky DSBs has recently advanced in yeast, mammals and plants. DNA DSBs are created by the enzymatic activity of the early recombinosome, a topoisomerase-like complex containing SPO11. This opinion paper reviews recent insights on the regulation of the SPO11 cofactors necessary for the introduction of temporally and spatially controlled DSBs. We propose that a 'multi-key-lock' model for each subunit of the early recombinosome complex is required to secure the formation of DSBs. We also discuss the hypothetical implications that the established topoisomerase-like nature of the SPO11 core-complex can have in creating DSB in only one of the two replicated chromatids of early prophase I meiotic chromosomes. This hypothetical 'one per pair of chromatids' DSB formation model could optimize the faithful repair of the self-inflicted DSBs. Each DSB could use three potential intact homologous DNA sequences as repair template: one from the sister chromatid and the two others from the homologous chromosomes.", "journal": "Plant reproduction", "issn": [ "2194-7961" ], "authors": [ "Nahid Rafiei", "Arnaud Ronceret" ], "doi": "10.1007/s00497-024-00509-7", "publishedDate": "2024-08-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331138", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.00799v1", "title": "Practical Phase Retrieval Using Double Deep Image Priors", "publishedDate": "2022-11-02T00:37:51", "content": "Phase retrieval (PR) concerns the recovery of complex phases from complex magnitudes. We identify the connection between the difficulty level and the number and variety of symmetries in PR problems. We focus on the most difficult far-field PR (FFPR), and propose a novel method using double deep image priors. In realistic evaluation, our method outperforms all competing methods by large margins. As a single-instance method, our method requires no training data and minimal hyperparameter tuning, and hence enjoys good practicality.", "doi": null, "authors": [ "Zhong Zhuang", "David Yang", "Felix Hofmann", "David Barmherzig", "Ju Sun" ], "journal": null, "tags": [ "cs.CV", "cs.LG", "eess.IV" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.00799v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.00799v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331082", "title": "Full-Incision Double-Eyelid Blepharoplasty with Selective Sensory Nerve Preservation.", "content": "Full-incision double-eyelid blepharoplasty can result in upper eyelid skin numbness postoperatively. However, few studies have examined sensory loss after eyelid surgery. We propose a novel surgical approach with selective sensory nerve preservation to prevent postoperative upper eyelid numbness.", "journal": "Aesthetic plastic surgery", "issn": [ "1432-5241" ], "authors": [ "Jing Liu", "Jinlong Huang", "Jia Liu", "Xiaodong Chen", "Gang Chen", "Jinming Wang" ], "doi": "10.1007/s00266-024-04371-w", "publishedDate": "2024-09-03T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331082", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1901.09753v1", "title": "On maximum of Gaussian process with unique maximum point of its variance", "publishedDate": "2019-01-28T15:54:44", "content": "Gaussian random processes which variances reach theirs maximum values at unique points are considered. Exact asymptotic behaviors of probabilities of large absolute maximums of theirs trajectories have been evaluated using Double Sum Method under the widest possible conditions.", "doi": null, "authors": [ "E. Hashorva", "S. Kobelkov", "V. I. Piterbarg" ], "journal": null, "tags": [ "math.PR" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1901.09753v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1901.09753v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331081", "title": "A Multicenter, Randomized, Double-Blind, Parallel-Grouped, Positive-Controlled, Non-Inferiority Clinical Study to Evaluate the Efficacy and Safety of Injectable Calcium Hydroxylapatite Microsphere Hydrogel Fillers in the Correction of Nasolabial Fold in Chinese Subjects.", "content": "Soft tissue fillers are used to improve the appearance of nasolabial folds (NLFs). This study aimed to compare the efficacy and safety of a new calcium hydroxylapatite microsphere hydrogel filler (Aphranel) versus Restylane for correcting NLFs.", "journal": "Aesthetic plastic surgery", "issn": [ "1432-5241" ], "authors": [ "Yuyan Pan", "Zucheng Luo", "Shuwei Chen", "Nanhang Lu", "Yong Zhang", "Yanwen Yang", "Cheng Chen", "Jiaqi Liu", "Rufan Zhang", "Yining Ge", "Fazhi Qi", "Ming Zhu" ], "doi": "10.1007/s00266-024-04378-3", "publishedDate": "2024-09-03T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331081", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1904.05563v1", "title": "On maximum of Gaussian random field having unique maximum point of its variance", "publishedDate": "2019-04-11T07:20:37", "content": "Gaussian random fields on Euclidean spaces whose variances reach their maximum values at unique points are considered. Exact asymptotic behaviors of probabilities of large absolute maximum of theirs trajectories have been evaluated using Double Sum Method under the widest possible conditions.", "doi": null, "authors": [ "Sergey G. Kobelkov", "Vladimir I. Piterbarg" ], "journal": null, "tags": [ "math.PR" ], "comments": "19 pages", "pdf_url": "http://arxiv.org/pdf/1904.05563v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1904.05563v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331059", "title": "Advanced Hybrid Closed-Loop Therapy Compared With Standard Insulin Therapy Intrapartum and Early Postpartum in Women With Type 1 Diabetes: A Secondary Observational Analysis From the CRISTAL Randomized Controlled Trial.", "content": "To determine efficacy and safety of intrapartum and early postpartum advanced hybrid closed-loop (AHCL) therapy compared with standard insulin therapy in pregnant women with type 1 diabetes (T1D).", "journal": "Diabetes care", "issn": [ "1935-5548" ], "authors": [ "Kaat Beunen", "Pieter Gillard", "Nancy Van Wilder", "Dominique Ballaux", "Gerd Vanhaverbeke", "Youri Taes", "Xavier-Philippe Aers", "Frank Nobels", "Liesbeth Van Huffel", "Joke Marlier", "Dahae Lee", "Joke Cuypers", "Vanessa Preumont", "Sarah E Siegelaar", "Rebecca C Painter", "Annouschka Laenen", "Chantal Mathieu", "Katrien Benhalima" ], "doi": "10.2337/dc24-1320", "publishedDate": "2024-08-23T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331059", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1501.01349v1", "title": "Quantum noise of white light cavity using double-pumped gain medium", "publishedDate": "2015-01-07T02:13:41", "content": "Laser interferometric gravitational-wave detectors implement Fabry-Perot cavities to increase their peak sensitivity. However, this is at cost of reducing their detection bandwidth, which origins from the propagation phase delay of the light. The \"white-light-cavity\" idea, first proposed by Wicht et al. [Optics Communications 134, 431 (1997)], is to circumvent this limitation by introducing anomalous dispersion, using double-pumped gain medium, to compensate for such phase delay. In this article, starting from the Hamiltonian of atom-light interaction, we apply the input-output formalism to evaluate the quantum noise of the system. We find that apart from the additional noise associated with the parametric amplification process noticed by others, the stability condition for the entire system poses an additional constraint. Through surveying the parameter regimes where the gain medium remains stable (not lasing) and stationary, we find that there is no net enhancement of the shot-noise limited sensitivity. Therefore, other gain mediums or different parameter regimes shall be explored for realizing the white light cavity.", "doi": "10.1103/PhysRevA.92.023807", "authors": [ "Yiqiu Ma", "Haixing Miao", "Chunnong Zhao", "Yanbei Chen" ], "journal": "Phys. Rev. A 92, 023807 (2015)", "tags": [ "quant-ph", "physics.optics" ], "comments": "12 pages, 7 figures", "pdf_url": "http://arxiv.org/pdf/1501.01349v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1501.01349v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331032", "title": "Methylphenidate reduces spatial attentional bias by modulating fronto-striatal connectivity.", "content": "Spatial attention bias reflects tendency to direct attention to specific side in space. This bias reflects asymmetric dopamine (DA) signaling in the striatum. Administration of DA agonists reduces spatial bias, yet the underlying mechanism is not yet clear. To address this, the current study tested whether methylphenidate (MPH; an indirect DA agonist) reduces orienting bias by modulating fronto-striatal connectivity. 54 adults with consistent bias completed the greyscales task which detects subtle biases during fMRI scanning under MPH (20 mg) or placebo, in a double-blind design. As hypothesized, MPH reduced bias by increasing orienting towards non-preferred hemispace, regardless of whether the initial bias was left or right. MPH-induced increases were found in activation of the medial superior frontal gyrus (mSFG: F[1;53] = 4.632, cluster-defining threshold of P < 0.05, minimal cluster size = 0, p_FWE = 0.036, η2 = 0.08) and its functional connectivity with the caudate (left caudate: F[1;53] = 12.664, p_FWE = 0.001, η2 = 0.192; right caudate: F[1;53] = 11.069, p_FWE = 0.002, η2 = 0.172), when orienting towards the non-preferred hemispace. MPH also reduced mSFG activation and fronto-striatal connectivity for the preferred hemispace. Results suggest modulation of frontal excitability due to increased caudate-mSFG functional connectivity. This mechanism may underlie the positive effect of dopaminergic agonists on abnormal patterns of directing attention in space.", "journal": "Cerebral cortex (New York, N.Y. : 1991)", "issn": [ "1460-2199" ], "authors": [ "Leehe Peled-Avron", "Maryana Daood", "Rachel Ben-Hayun", "Michael Nevat", "Judith Aharon-Peretz", "Roee Admon", "Rachel Tomer" ], "doi": "10.1093/cercor/bhae379", "publishedDate": "2024-09-03T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331032", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1910.01465v2", "title": "Reducing Overestimation Bias in Multi-Agent Domains Using Double Centralized Critics", "publishedDate": "2019-10-03T13:40:46", "content": "Many real world tasks require multiple agents to work together. Multi-agent reinforcement learning (RL) methods have been proposed in recent years to solve these tasks, but current methods often fail to efficiently learn policies. We thus investigate the presence of a common weakness in single-agent RL, namely value function overestimation bias, in the multi-agent setting. Based on our findings, we propose an approach that reduces this bias by using double centralized critics. We evaluate it on six mixed cooperative-competitive tasks, showing a significant advantage over current methods. Finally, we investigate the application of multi-agent methods to high-dimensional robotic tasks and show that our approach can be used to learn decentralized policies in this domain.", "doi": null, "authors": [ "Johannes Ackermann", "Volker Gabler", "Takayuki Osa", "Masashi Sugiyama" ], "journal": null, "tags": [ "cs.LG", "cs.AI", "cs.MA", "stat.ML" ], "comments": "Accepted for the Deep RL Workshop at NeurIPS 2019; Changes for v2:\n Changed Figures 3,4, due to an error in the implementation of MATD3. Please\n refer to this version for fair evaluation", "pdf_url": "http://arxiv.org/pdf/1910.01465v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1910.01465v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330850", "title": "Use of Botulinum Toxin in Upper-Limb Tremor: Systematic Review and Perspectives.", "content": "Tremor is the most common movement disorder, with significant functional and psychosocial consequences. Oral medications have been disappointing or limited by side effects. Surgical techniques are effective but associated with risks and adverse events. Botulinum toxin (BT) represents a promising avenue but there is still no double-blind evidence of efficacy on upper limb function. A systematic review on the effects of BT in upper-limb tremor was conducted.", "journal": "Toxins", "issn": [ "2072-6651" ], "authors": [ "Damien Motavasseli", "Cécile Delorme", "Nicolas Bayle", "Jean-Michel Gracies", "Emmanuel Roze", "Marjolaine Baude" ], "doi": "10.3390/toxins16090392", "publishedDate": "2024-09-07T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330850", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2008.11928v3", "title": "Quantum illumination receiver using double homodyne detection", "publishedDate": "2020-08-27T06:15:00", "content": "A quantum receiver is an essential element of quantum illumination (QI) which outperforms its classical counterpart, called classical-illumination (CI). However, there are only few proposals for realizable quantum receiver, which exploits nonlinear effects leading to increasing the complexity of receiver setups. To compensate this, in this article, we design a quantum receiver with linear optical elements for Gaussian QI. Rather than exploiting nonlinear effect, our receiver consists of a 50:50 beam splitter and homodyne detection. Using double homodyne detection after the 50:50 beam splitter, we analyze the performance of the QI in different regimes of target reflectivity, source power, and noise level. We show that our receiver has better signal-to-noise ratio and more robust against noise than the existing simple-structured receivers.", "doi": "10.1103/PhysRevResearch.3.013006", "authors": [ "Yonggi Jo", "Sangkyung Lee", "Yong Sup Ihn", "Zaeill Kim", "Su-Yong Lee" ], "journal": "Phys. Rev. Research 3, 013006 (2021)", "tags": [ "quant-ph" ], "comments": "9 pages, 6 figures", "pdf_url": "http://arxiv.org/pdf/2008.11928v3", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2008.11928v3", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330689", "title": "Recent Progress on Stability of Layered Double Hydroxide-Based Catalysts for Oxygen Evolution Reaction.", "content": "Water electrolysis is regarded as one of the most viable technologies for the generation of green hydrogen. Nevertheless, the anodic oxygen evolution reaction (OER) constitutes a substantial obstacle to the large-scale deployment of this technology, due to the considerable overpotential resulting from the retardation kinetics associated with the OER. The development of low-cost, high-activity, and long-lasting OER catalysts has emerged as a pivotal research area. Layered double hydroxides (LDHs) have garnered significant attention due to their suitability for use with base metals, which are cost-effective and exhibit enhanced activity. However, the current performance of LDHs OER catalysts is still far from meeting the demands of industrial applications, particularly in terms of their long-term stability. In this review, we provide an overview of the causes for the deactivation of LDHs OER catalysts and present an analysis of the various mechanisms employed to improve the stability of these catalysts, including the synthesis of LDH ultrathin nanosheets, adjustment of components and doping, dissolution and redeposition, defect creation and corrosion, and utilization of advanced carbon materials.", "journal": "Nanomaterials (Basel, Switzerland)", "issn": [ "2079-4991" ], "authors": [ "Lielie He", "Yangen Zhou", "Mengran Wang", "Simin Li", "Yanqing Lai" ], "doi": "10.3390/nano14181533", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330689", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2010.13346v1", "title": "Energy and Service-priority aware Trajectory Design for UAV-BSs using Double Q-Learning", "publishedDate": "2020-10-26T05:21:30", "content": "Next-generation mobile networks have proposed the integration of Unmanned Aerial Vehicles (UAVs) as aerial base stations (UAV-BS) to serve ground nodes. Despite having advantages of using UAV-BSs, their dependence on the on-board, limited-capacity battery hinders their service continuity. Shorter trajectories can save flying energy, however, UAV-BSs must also serve nodes based on their service priority since nodes' service requirements are not always the same. In this paper, we present an energy-efficient trajectory optimization for a UAV assisted IoT system in which the UAV-BS considers the IoT nodes' service priorities in making its movement decisions. We solve the trajectory optimization problem using Double Q-Learning algorithm. Simulation results reveal that the Q-Learning based optimized trajectory outperforms a benchmark algorithm, namely Greedily-served algorithm, in terms of reducing the average energy consumption of the UAV-BS as well as the service delay for high priority nodes.", "doi": null, "authors": [ "Sayed Amir Hoseini", "Ayub Bokani", "Jahan Hassan", "Shavbo Salehi", "Salil S. Kanhere" ], "journal": null, "tags": [ "cs.NI", "cs.AI" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2010.13346v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2010.13346v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330634", "title": "Simultaneously Enhancing the Efficiency and Stability of Perovskite Solar Cells by Using P3HT/PEDOT:PSS as a Double Hole Transport Layer.", "content": "The stability issue of perovskite solar cells (PSCs) has long been of concern to researchers. Poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) is commonly used as a hole transport layer (HTL) in the inverted PSCs to achieve efficient and stable performance. However, PEDOT:PSS can corrode ITO, affecting device efficiency. Moreover, the hydrophilic nature of PEDOT:PSS compromises device stability. In this work, Poly (3-hexylthiophene-2,5-diyl) (P3HT), known for its good hydrophobicity, was used to modify the surface of PEDOT:PSS, reducing its water absorption and thereby enhancing the efficiency and stability of PSCs. The results reveal that incorporating P3HT effectively enhances the hydrophobicity of PEDOT:PSS. Furthermore, it fosters the development of large-grain perovskite film on the PEDOT:PSS/P3HT bilayer. This enhancement leads to a power conversion efficiency (PCE) of 19.78% for PSCs, with an increase by 16% than that of reference cells (17.04% of PCE). Following a duration of 1000 h, the PCE for the device modified with P3HT remains above 90%, while the PCE of the reference device is below 70%. These findings suggest that using P3HT in conjunction with PEDOT:PSS as a bilayer HTL can concurrently and proficiently improve the efficiency and stability of PSCs.", "journal": "Nanomaterials (Basel, Switzerland)", "issn": [ "2079-4991" ], "authors": [ "Xiude Yang", "Minghao Luo", "Qianqian Zhang", "Haishen Huang", "Yanqing Yao", "Yuanlin Yang", "Ying Li", "Wan Cheng", "Ping Li" ], "doi": "10.3390/nano14181476", "publishedDate": "2024-09-06T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330634", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2101.06452v1", "title": "Hyperfine measurement of $6\\text{P}_{1/2}$ state in $^{87}\\text{Rb}$ using double resonance on blue and IR transition", "publishedDate": "2021-01-16T14:58:15", "content": "In this paper, we present the spectroscopy of 6P$_{1/2}$ state in $^{87}$Rb using double resonance technique at $780~\\text{nm}$ and $421~\\text{nm}$. The double resonance technique is implemented using electromagnetically induced transparency (EIT) and optical pumping methods. Using these spectroscopy methods, we have measured the hyperfine splitting of 6P$_{1/2}$ state with precision of $<$400~kHz which agrees well with other spectroscopy methods such as electrical discharge and saturated absorption spectroscopy at $421~\\text{nm}$.", "doi": "10.1088/1361-6455/ab7670", "authors": [ "Elijah Ogaro Nyakang'o", "Dangka Shylla", "Vasant Natarajan", "Kanhaiya Pandey" ], "journal": "J. Phys. B: At. Mol. Opt. Phys. 53 (2020) 095001", "tags": [ "physics.atom-ph" ], "comments": "6 pages, 5 figures", "pdf_url": "http://arxiv.org/pdf/2101.06452v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2101.06452v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330545", "title": "The dual-functional role of carboxylate in a nickel-iron catalyst towards efficient oxygen evolution.", "content": "The efficiency of the oxygen evolution reaction (OER) is severely limited by the sluggish proton-coupled electron transfer processes and inadequate long-term stability. Herein, we introduce a carboxylate group (TPA) to modify NiFe layered double hydroxide (NiFe LDH@TPA), resulting in notable improvements in both activity and stability. A combination of spectroscopic and theoretical investigations reveals the dual-functional role of incorporated TPA. It facilitates the deprotonation of OER intermediates while strengthening the Fe-O bond and acting as a molecular fence, ensuring superior OER kinetics and anti-dissolution properties. NiFe LDH@TPA delivers a low overpotential of 200 mV at 10 mA cm", "journal": "Nanoscale", "issn": [ "2040-3372" ], "authors": [ "Dan Wu", "Yuanhua Sun", "Xue Zhang", "Xiaokang Liu", "Linlin Cao", "Tao Yao" ], "doi": "10.1039/d4nr03689a", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330545", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1811.09121v2", "title": "Double branched covers of knotoids", "publishedDate": "2018-11-22T11:27:00", "content": "By using double branched covers, we prove that there is a 1-1 correspondence between the set of knotoids in the 2-sphere, up to orientation reversion and rotation, and knots with a strong inversion, up to conjugacy. This correspondence allows us to study knotoids through tools and invariants coming from knot theory. In particular, concepts from geometrisation generalise to knotoids, allowing us to characterise invertibility and other properties in the hyperbolic case. Moreover, with our construction we are able to detect both the trivial knotoid in the 2-sphere and the trivial planar knotoid.", "doi": null, "authors": [ "Agnese Barbensi", "Dorothy Buck", "Heather A. Harrington", "Marc Lackenby" ], "journal": null, "tags": [ "math.GT", "57M25, 57M27" ], "comments": "39 pages, 40 figures. It incorporates the referees' comments and a\n small change in Theorem 1.3", "pdf_url": "http://arxiv.org/pdf/1811.09121v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1811.09121v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7bna", "title": "ANISOTROPIC THERMAL-PARAMETER REFINEMENT OF THE DNA DODECAMER CGCGAATTCGCG BY THE SEGMENTED RIGID-BODY METHOD", "content": "Anisotropic Thermal-Parameter Refinement of the DNA Dodecamer CGCGAATTCGCG by the Segmented Rigid-Body Method - Holbrook SR, Dickerson RE, Kim S-H Acta Crystallogr., B (41) 255-262 (1985)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7bna_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7bna", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7wkj", "title": "A COVID-19 T-cell response detection method based on a newly identified human CD8+ T cell epitope from SARS-CoV-2-Hubei Province, 2021.", "content": "A COVID-19 T-Cell Response Detection Method Based on a Newly Identified Human CD8+ T Cell Epitope from SARS-CoV-2 - Hubei Province, China, 2021. - Zhang J, Lu D, Li M, Liu MS, Yao SJ, Zhan JB, Liu J, Gao GF China CDC Wkly (4) 83-87 (2022)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7wkj_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7wkj", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2mor", "title": "A tensor-free method for the structural and dynamical refinement of proteins using residual dipolar couplings", "content": "A tensor-free method for the structural and dynamical refinement of proteins using residual dipolar couplings. - Camilloni C, Vendruscolo M J Phys Chem B (119) 653-61 (2015)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2mor_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2mor", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2nr2", "title": "The MUMO (minimal under-restraining minimal over-restraining) method for the determination of native states ensembles of proteins", "content": "The MUMO (minimal under-restraining minimal over-restraining) method for the determination of native state ensembles of proteins. - Richter B, Gsponer J, Varnai P, Salvatella X, Vendruscolo M J Biomol NMR (37) 117-35 (2007)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2nr2_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2nr2", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h56", "title": "Crystal structure of endothiapepsin PF_cryo3 in complex with AC39729 at 100 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h56_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h56", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h5w", "title": "Crystal structure of endothiapepsin PF_RT2 in complex with JFD03909 at 296 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h5w_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h5w", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h58", "title": "Crystal structure of endothiapepsin PF_RT2 in complex with AC39729 at 296 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h58_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h58", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h5u", "title": "Crystal structure of endothiapepsin PF_cryo3 in complex with JFD03909 at 100 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h5u_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h5u", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331462", "title": "Ablation of Supraventricular Arrhythmias With as Low as Reasonably Achievable X-Ray exposure (AALARA): Results of Prospective, Observational, Multicenter, Multinational, Open-Label Registry Study on Real World Data Using Routine Ensite 3D Mapping During SVT Ablation.", "content": "The reduction of fluoroscopic exposure during catheter ablation of supraventricular arrhythmias is widely adopted by experienced electrophysiology physicians with a relatively short learning curve and is becoming the standard of care in many parts of the world. While observational studies in the United States and some parts of Western Europe have evaluated the minimal fluoroscopic approach, there are scarce real-world data for this technique and the generalizability of outcomes in other economic regions.", "journal": "Pacing and clinical electrophysiology : PACE", "issn": [ "1540-8159" ], "authors": [ "Mohammad Amin", "Ayan Abdrakhmanov", "Evgeniy Kropotkin", "Vasil Traykov", "Zoltán Salló", "László Gellér", "Faizel Lorgat", "Oleg Sapelnikov", "Ondrej Toman", "Khalid Al-Muti", "Mohamed Aljaabari", "Adrian Bystriansky", "László Környei", "Nebojša Mujović", "Stefanie Simons", "Nándor Szegedi" ], "doi": "10.1111/pace.15075", "publishedDate": "2024-09-04T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331462", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331444", "title": "Silicone sling surgery for congenital ptosis: Tarsal tunnel technique.", "content": "This was a prospective, interventional, comparative study conducted on patients with congenital simple severe ptosis. A novel method of silicone rod fixation to the tarsus (tarsal tunnel technique, group 1) was done compared with a conventional technique of silicone rod fixation (suture fixation technique, group 2) in frontalis suspension surgery. A total of 30 patients were randomized into two groups of 15 patients each. Postoperatively, MRD1, vertical palpebral aperture, and eyelid fold height were comparable in both groups till the last follow-up with stability in eyelid position. Patient satisfaction scores showed similar results with good-fair satisfaction grading in 13 patients in group 1 and 11 patients in group 2 at 6 months follow-up. No significant complications occurred in either group. Tarsal tunnel fixation of silicone rods is a novel method in sling surgery with optimal cosmetic and function outcomes. Further long-term studies are needed to validate the results of the technique.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Neelam Pushker", "Manish Mahabir", "Sahil Agrawal", "Mandeep Singh Bajaj" ], "doi": "10.4103/IJO.IJO_2766_23", "publishedDate": "2024-03-10T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331444", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331443", "title": "Evaluation of antioxidant status of lens epithelial cells in cataract patients.", "content": "The main factor that causes cataracts is the increased oxidative stress and imbalance of an antioxidant defense mechanism, which leads to significant changes in the lens microarchitecture. Senile cataract is the most common type of acquired cataracts due to aging.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Kranti Santosh Sorte Gawali", "Avinash Namdeo Jadhao", "Trupti Diwan Ramteke", "Neelam Jayant Patil", "Harshal Sahare" ], "doi": "10.4103/IJO.IJO_19_24", "publishedDate": "2024-04-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331443", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331437", "title": "Analysis of anthropometric measurements taken from the periocular region in healthy young individuals with different somatotypes.", "content": "Anthropometric parameters related with the periocular region (PR) have gained great importance with the optical technology used in the treatment of eye defects. They have also become important parameters that determine the limits of treatment in aesthetic surgery procedures in PR and the treatment of orbital diseases. The aim of this study was to examine the relationship of PR measurements with somatotype.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Sıdıka Karaketir", "Demet Şencan", "Serdar Çolakoğlu", "Deniz Şenol" ], "doi": "10.4103/IJO.IJO_2836_23", "publishedDate": "2024-02-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331437", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331418", "title": "Hydrophobic ZIF-8 nanoparticles loaded on chitosan for improved methanol adsorption from fermented wine.", "content": "Metal-organic frameworks (MOFs) have great potential for the adsorption of minor molecular alcohols in the vapor phase. However, the drawbacks of powdered MOFs, including low recyclability and problematic separation, limit their application in fermented wine. Chitosan (CS) is a low-cost, eco-friendly, moldable matrix used in the food industry. In this study, a novel CS@ZIF-8 adsorbent with excellent microporous surface area was successfully synthesized by incorporating hydrophobic ZIF-8 into CS. The results showed that CS@ZIF-8 beads had a high adsorption affinity for methanol at a Zn", "journal": "Journal of food science", "issn": [ "1750-3841" ], "authors": [ "Mibin Lin", "Jia Sha", "Zhonghao Zhu", "Penghui Ye", "Kai Zhao", "Kaijun Xiao" ], "doi": "10.1111/1750-3841.17397", "publishedDate": "2024-08-31T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331418", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331382", "title": "Modular Synthesis of Azidobicyclo[2.1.1]hexanes via (3 + 2) Annulation of α-Substituted Vinyl Azides and Bicyclo[1.1.0]butanes.", "content": "Here, we present a mild and rapid method to access azidobicyclo[2.1.1]hexanes via formal (3 + 2) cycloaddition of α-substituted vinyl azides and bicyclo[1.1.0]butanes under Lewis acid catalysis. A wide range of α-substituted vinyl azides were tolerated under mild conditions. Notably, the resulting cycloadducts could be transformed into structurally attractive 3-azabicyclo[3.1.1]heptenes through microwave-promoted rearrangement. The utilities were highlighted by copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition of tertiary alkyl azide and further transformation of the azide and ketone groups.", "journal": "The Journal of organic chemistry", "issn": [ "1520-6904" ], "authors": [ "Sai Hu", "Yuhong Gao", "Yuming Pan", "Dongshun Ni", "Li Deng" ], "doi": "10.1021/acs.joc.4c01920", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331382", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331381", "title": "Liquid Atmospheric Pressure Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Using a Commercial Ion Source and Orbitrap Mass Analyzer.", "content": "A liquid atmospheric pressure-matrix-assisted laser desorption/ionization (LAP-MALDI) method has been developed and applied to a commercial AP-MALDI source on a hybrid orbitrap mass analyzer. It is shown that electrospray ionization (ESI)-like mass spectra of a range of peptides and proteins can be acquired by LAP-MALDI mass spectrometry (MS) as previously demonstrated on a homemade LAP-MALDI-Q-TOF setup but without the need of any modification to the commercially available MS equipment used. Multiply charged peptide ions were recorded with a resolution of around 100,000 and a mass accuracy of less than 5 ppm. The higher resolution and mass accuracy of the orbitrap analyzer compared with previously employed Q-TOF instrumentation provided high confidence in bacterial proteoform and species identification by top-down protein analysis.", "journal": "Analytical chemistry", "issn": [ "1520-6882" ], "authors": [ "Bob Challen", "Lily R Adair", "Rainer Cramer" ], "doi": "10.1021/acs.analchem.4c04458", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331381", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331379", "title": "A Method for Treating Significant Conformational Changes in Alchemical Free Energy Simulations of Protein-Ligand Binding.", "content": "Relative binding free energy (RBFE) simulation is a rigorous approach to the calculation of quantitatively accurate binding free energy values for protein-ligand binding in which a reference binder is gradually converted to a target binder through alchemical transformation during the simulation. The success of such simulations relies on being able to accurately sample the correct conformational phase space for each alchemical state; however, this becomes a challenge when a significant conformation change occurs between the reference and target binder-receptor complexes. Increasing the simulation time and using enhanced sampling methods can be helpful, but effects can be limited, especially when the free energy barrier between conformations is high or when the correct target complex conformation is difficult to find and maintain. Current RBFE protocols seed the reference complex structure into every alchemical window of the simulation. In our study, we describe an improved protocol in which the reference structure is seeded into the first half of the alchemical windows, and the target structure is seeded into the second half of the alchemical windows. By applying information about the relevant correct end point conformations to different simulation windows from the beginning, the need for large barrier crossings or simulation prediction of the correct structures during an alchemical simulation is in many cases obviated. In the diverse cases we examine below, the simulations yielded free energy predictions that are satisfactory as compared to experiment and superior to running the simulations utilizing the conventional protocol. The method is straightforward to implement for publicly available FEP workflows.", "journal": "Journal of chemical theory and computation", "issn": [ "1549-9626" ], "authors": [ "Junzhuo Liao", "Alina P Sergeeva", "Edward D Harder", "Lingle Wang", "Jared M Sampson", "Barry Honig", "Richard A Friesner" ], "doi": "10.1021/acs.jctc.4c00954", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331379", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331345", "title": "Cortical microstructural alterations in different stages of Parkinson's disease.", "content": "To explore the cortical microstructural alterations in Parkinson's disease (PD) at different stages. 149 PD patients and 76 healthy controls were included. PD patients were divided into early stage PD (EPD) (Hoehn-Yahr stage ≤ 2) and moderate-to-late stage PD (MLPD) (Hoehn-Yahr stage ≥ 2.5) according to their Hoehn-Yahr stages. All participants underwent two-shell diffusion MRI and the images were fitted to Neurite Orientation Dispersion and Density Imaging (NODDI) model to obtain the neurite density index (NDI) and orientation dispersion index (ODI) to reflect the cortical microstructure. We used gray matter-based spatial statistics method to compare the voxel-wise cortical NODDI metrics between groups. Partial correlation was used to correlate the NODDI metrics and global composite outcome in PD patients. Compared with healthy controls, EPD patients showed lower ODI in widespread regions, covering bilateral frontal, temporal, parietal and occipital cortices, as well as regional lower NDI in bilateral cingulate and frontal lobes. Compared with healthy controls, MLPD patients showed lower ODI and NDI in more widespread regions. Compared with EPD patients, MLPD patients showed lower ODI in bilateral temporal, parietal and occipital cortices, where the ODI values were negatively correlated with global composite outcome in PD patients. PD patients showed widespread cortical microstructural degeneration, characterized by reduced neurite density and orientation dispersion, and the cortical neuritic microstructure exhibit progressive degeneration during the progression of PD.", "journal": "Brain imaging and behavior", "issn": [ "1931-7565" ], "authors": [ "Xueqin Bai", "Tao Guo", "Xiaojun Guan", "Cheng Zhou", "Jingjing Wu", "Haoting Wu", "Xiaocao Liu", "Chengqing Wu", "Jingwen Chen", "Jiaqi Wen", "Jianmei Qin", "Sijia Tan", "Xiaojie DuanMu", "Luyan Gu", "Ting Gao", "Peiyu Huang", "Baorong Zhang", "Xiaojun Xu", "Xiangwu Zheng", "Minming Zhang" ], "doi": "10.1007/s11682-024-00931-5", "publishedDate": "2024-09-12T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331345", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/1i9f", "title": "STRUCTURAL CHARACTERIZATION OF THE COMPLEX OF THE REV RESPONSE ELEMENT RNA WITH A SELECTED PEPTIDE", "content": "Structural characterization of the complex of the Rev response element RNA with a selected peptide. - Zhang Q, Harada K, Cho HS, Frankel A, Wemmer DE Chem Biol (8) 511-20 (2001)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/1i9f_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/1i9f", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1, 2 ], "score": 3.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4evu", "title": "Crystal structure of C-terminal domain of putative periplasmic protein ydgH from S. enterica", "content": "Structural and functional characterization of DUF1471 domains of Salmonella proteins SrfN, YdgH/SssB, and YahO. - Michalska K, Cui H, Xu X, Brown RN, Cort JR, Heffron F, Nakayasu ES, Savchenko A, Adkins JN, Joachimiak A, Program for the Characterization of Secreted Effector Proteins (PCSEP), Midwest Center for Structural Genomics (MCSG) PLoS One (9) e101787 (2014)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4evu_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4evu", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/6jic", "title": "Identification and Characterization of a carboxypeptidase inhibitor from Lycium barbarum", "content": "Identification and characterization of a wolfberry carboxypeptidase inhibitor from Lycium barbarum. - Tan WL, Wong KH, Huang JY, Tay SV, Wang SJ Food Chem (351) 129338 (2021)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/6jic_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/6jic", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2knp", "title": "Isolation and characterization of peptides from Momordica cochinchinensis seeds.", "content": "Isolation and characterization of peptides from Momordica cochinchinensis seeds. - Daly NL, Chan L J Nat Prod (72) 1453-8 (2009)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2knp_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2knp", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2k3c", "title": "Structural and Functional Characterization of TM IX of the NHE1 Isoform of the Na+/H+ Exchanger", "content": "Structural and functional characterization of transmembrane segment IX of the NHE1 isoform of the Na+/H+ exchanger. - Reddy T, Ding J, Li X, Sykes BD, Fliegel L, Rainey JK J Biol Chem (283) 22018-30 (2008)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2k3c_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2k3c", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331411", "title": "Unraveling the adsorption-limited hydrogen oxidation reaction at palladium surface via in situ electron microscopy.", "content": "Palladium (Pd) catalysts have been extensively studied for the direct synthesis of H", "journal": "Proceedings of the National Academy of Sciences of the United States of America", "issn": [ "1091-6490" ], "authors": [ "Yukun Liu", "Kunmo Koo", "Zugang Mao", "Xianbiao Fu", "Xiaobing Hu", "Vinayak P Dravid" ], "doi": "10.1073/pnas.2408277121", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331411", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331343", "title": "Detection of Shiga toxin-producing Escherichia coli in dairy cows: genetic characterization and inhibition of adherence by catlle anti-STEC antibodies to HEp-2 cell.", "content": "Shiga toxin-producing Escherichia coli (STEC) is a zoonotic pathogen associated with severe disease. Cattle are recognized as the primary animal reservoir of STEC. This study reports the occurrence and characterization of STEC from dairy cows and evaluates the inhibition of adherence by catlle anti-STEC antibodies to the HEp-2 cell. From 151 samples, 30% (n = 45) were positive for stx by PCR screening (25.21% of dairy cows and 46.8% of growing calves). From these positive samples, 17 STEC isolates were characterized. In dairy cows, 3 out of 17 samples carried stx2, 3 out of 17 possessed stx1, and 2 out of 17 carried stx1/stx2. In growing cows, 8 out of 17 samples carried stx1 and 1 out of 17 carried stx1/stx2. Other virulence factors such as ehxA, saa, iha, cah, and eae were detected. The strains were typed into 3 E. coli O groups (O26, O91, and O130). The analysis of the HEp-2 adherence assays indicated that all serum from both cattle categories presented high levels of inhibition of adherence. Considering the severity of the symptoms caused by STEC in humans, searching for factors influencing the colonization of STEC in cattle would help identify strategies to avoid transmission and STEC infection.", "journal": "Veterinary research communications", "issn": [ "1573-7446" ], "authors": [ "Rocío Colello", "M Victoria Vélez", "Marcelo Rodríguez", "Ariel Rogé", "Analía I Etcheverría", "Nora Lía Padola" ], "doi": "10.1007/s11259-024-10557-z", "publishedDate": "2024-09-21T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331343", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331330", "title": "Production, Characterization, Kinetics, and Thermodynamics Analysis of Amyloglucosidase from Fungal Consortium.", "content": "The current study aimed to produce an amyloglucosidase enzyme from the fungal consortium. The best amylolytic fungal consortia were identified as Alternaria alternata and Aspergillus niger through the 18S rDNA technique. Fermentation kinetics and various nutritional and cultural parameters were analyzed. Maximum production was obtained in M4 media, pH 5.5, 30 °C, and 4 mL inoculum at 150 rpm after 72 h of incubation. Along with that, sodium nitrate at 2.5%, maltose, beef extract 1%, zinc sulfate (0.1%), and Tween 80 (0.1%) supported the maximum amyloglucosidase production. Amyloglucosidase was partially purified up to 1.6 purification fold with a specific activity of 1.84 Umg", "journal": "Applied biochemistry and biotechnology", "issn": [ "1559-0291" ], "authors": [ "Imran Ali", "Roheena Abdullah", "Asifa Saleem", "Kinza Nisar", "Afshan Kaleem", "Mehwish Iqtedar", "Irfana Iqbal", "Xiaoming Chen" ], "doi": "10.1007/s12010-024-05067-2", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331330", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331193", "title": "Exploring the heterogeneity of interstitial cells of Cajal and their properties in gastrointestinal mesenchymal tumors applying single-cell RNA sequencing analysis.", "content": "Gastrointestinal mesenchymal stromal tumors (GISTs) are a group of intramural tumors that exhibit a wide range of morphologies. Dysfunction or loss of interstitial cells of Cajal (ICCs) is correlated with the disorders of gastrointestinal motility. At present, the characterization and molecular mechanisms underlying the role of ICCs in GIST are still not clear.", "journal": "Discover oncology", "issn": [ "2730-6011" ], "authors": [ "Yongjun Zhu", "Rui Zhang", "Shipai Zhang", "Haijun Hu" ], "doi": "10.1007/s12672-024-01372-8", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331193", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331189", "title": "Epidemiology, genetic characterization and population structure analysis of lumpy skin disease virus from North India.", "content": "Lumpy skin disease (LSD) is a transboundary, viral disease of cattle with a significant economic impact on the livestock industry. This study describes the epidemiological investigations of outbreaks of LSD that occurred in 2022 in three Indian states viz., Haryana, Himachal Pradesh and Rajasthan and the genetic characterization of Lumpy skin disease viruses (LSDVs). Also, the population structure analysis of LSDVs was carried out. Out of 138 scab samples tested from suspected cattle for LSDV, 106 were found positive. Of these, nine representative scab samples were further genetically characterized. Phylogenetic analysis based on the P32 and EEV gene sequences depicted that the LSDV strains of the present study had nucleotide identity of 100% and 99.10-99.45%, respectively with the LSDV/2019 field strains of India. Multiple sequence alignment of the EEV glycoprotein gene sequences revealed nucleotide polymorphisms at three positions viz., G178A, G253A and A459G in circulating LSDV/2022 field strains. Based on the median joining network analysis of the EEV gene, 12 haplotypes were identified among the LSDV populations. Population structure analysis corresponding to the EEV gene revealed high haplotype (0.8486 ± 0.026) and low nucleotide diversities (0.00636 ± 0.0006) and negative values for neutrality indices, indicating a high number of closely related haplotypes and the studied population may have undergone a recent expansion. The findings will help in understanding the distribution and dynamics of LSDV populations, which will prove pivotal in designing and implementing effective management and control strategies.", "journal": "Tropical animal health and production", "issn": [ "1573-7438" ], "authors": [ "Pallavi Moudgil", "Ramesh Kumar", "Punit Jhandai", "Sameer Kamboj", "Khushbu Bishnoi", "Kushal Grakh", "Renu Gupta", "Rajesh Khurana", "Naresh Jindal" ], "doi": "10.1007/s11250-024-04102-y", "publishedDate": "2024-09-11T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331189", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331177", "title": "Combining SiO", "content": "Cadmium (Cd) pollution in water and soil seriously threatens human health. Biochar and nanomaterials have high potential for solving the cadmium pollution problem due to their abundant pores and high specific surface area. Here, the preparation of the composite material SiO", "journal": "Environmental geochemistry and health", "issn": [ "1573-2983" ], "authors": [ "Shirui Peng", "Jing Liu", "Guofei Pan", "Yan Qin", "Zhixing Yang", "Xiaomu Yang", "Minghua Gu", "Zhiqiang Zhu", "Yanyan Wei" ], "doi": "10.1007/s10653-024-02243-5", "publishedDate": "2024-09-17T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331177", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331087", "title": "Effect of bioceramic inclusions on gel-cast aliphatic polymer membranes for bone tissue engineering applications: An in vitro study.", "content": "Polylactic acid (PLA) has been extensively used in tissue engineering. However, poor mechanical properties and low cell affinity have limited its pertinence in load bearing bone tissue regeneration (BTR) devices.", "journal": "Bio-medical materials and engineering", "issn": [ "1878-3619" ], "authors": [ "Vasudev Vivekanand Nayak", "Edmara T P Bergamo", "Vijayavenkataraman Sanjairaj", "Rakesh Kumar Behera", "Nikhil Gupta", "Paulo G Coelho", "Lukasz Witek" ], "doi": "10.3233/BME-240079", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331087", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331013", "title": "Targeted synthesis of gold nanorods and characterization of their tailored surface properties using optical and X-ray spectroscopy.", "content": "In recent years, nanophotonics have had a transformative impact on harnessing energy, directing chemical reactions, and enabling novel molecular dynamics for thermodynamically intensive applications. Plasmonic nanoparticles have emerged as a tool for confining light on nanometer-length scales where regions of intense electromagnetic fields can be precisely tuned for controlled surface chemistry. We demonstrate a precision pH-driven synthesis of gold nanorods with optical resonance properties widely tunable across the near-infrared spectrum. Through controlled electrostatic interactions, we can perform selective adsorbate molecule attachment and monitor the surface transitions through spectroscopic techniques that include ground-state absorption spectrophotometry, two-dimensional X-ray absorption near-edge spectroscopy, Fourier-transform infrared spectroscopy, and surface-enhanced Raman spectroscopy. We elucidate the electronic, structural, and chemical factors that contribute to plasmon-molecule dynamics at the nanoscale with broad implications for the fields of energy, photonics, and bio-inspired materials.", "journal": "Physical chemistry chemical physics : PCCP", "issn": [ "1463-9084" ], "authors": [ "David G Schauer", "Jona Bredehoeft", "Umar Yunusa", "Ajith Pattammattel", "Hans Jakob Wörner", "Emily A Sprague-Klein" ], "doi": "10.1039/d4cp01993h", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331013", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330976", "title": "Synthesis, Characterization and Antibacterial Activity Evaluation of CuO NPs and B-CuO NPs obtained from Livistona chinensis leaf extract.", "content": "Nanoparticles (NPs) exhibit fascinating size-dependent chemical and physical characteristics that make them useful for a variety of applications. The present paper reports the green synthesis of CuO NPs and B-doped CuO NPs (B-CuO NPs) from Livistona chinensis leaf extract. Not much work has been reported on the use of the plant extract for the fabrication of NPs, particularly those of Cu and its doped counterparts. Various spectroscopic techniques were used to characterize the synthesized NPs. In the FT-IR spectra, peaks obtained at 504 cm-1 to 600 cm-1 were due to Cu-O vibrations. The energy dispersive X-ray analysis (EDX) spectra confirmed the CuO NPs' composition and B's presence inside the NPs. The peak pattern in X-ray diffraction (XRD) spectrum confirmed the crystalline and monoclinic phases of the NPs. The average crystalline size of CuO NPs and B-CuO NPs was 19.56 nm and 17.30 nm respectively. The CuO and B-CuO NPs were tested against three Gram-positive bacterial strains namely Bacillus subtilis, Micrococcus luteus, and Staphylococcus aureus and three Gram-negative Escherichia coli, Salmonella abony, and Pseudomonas aeruginosa through Agar well diffusion method and it was found that CuO NPs showed higher activity than B-CuO NPs.", "journal": "Chemistry & biodiversity", "issn": [ "1612-1880" ], "authors": [ "Ekhlakh Veg", "Azam Raza", "Smita Rai", "Swati Sharma", "Anushka Pandey", "Mohammad Imran Ahmad", "Sabeeha Jabeena", "Seema Joshi", "Tahmeena Khan" ], "doi": "10.1002/cbdv.202401596", "publishedDate": "2024-09-27T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330976", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330972", "title": "Gel-Gel Phase Separation in Clustered Poly(ethylene glycol) Hydrogel with Enhanced Hydrophobicity.", "content": "The development of hydrophobic poly(ethylene glycol) (PEG) hydrogels, which are typically hydrophilic, could significantly enhance their application as artificial extracellular matrices. In this study, we designed PEG hydrogels with enhanced hydrophobicity through gel-gel phase separation (GGPS), a phenomenon that uniquely enhances hydrophobicity under ambient conditions, and we elucidated the pivotal role of elasticity in this process. We hypothesized that increased elasticity would amplify GGPS, thereby improving the hydrophobicity and cell adhesion on PEG hydrogel surfaces, despite their inherent hydrophilicity. To test this hypothesis, we engineered dilute oligo-PEG gels via a two-step process, creating polymer networks from tetra-PEG clusters with multiple reaction points. These oligo-PEG gels exhibited significantly higher elasticity, turbidity, and shrinkage upon water immersion compared to dilute PEG gels. Detailed characterization through confocal laser scanning microscopy, rheological measurements, and cell adhesion assays revealed distinct biphasic structures, increased hydrophobicity, and enhanced cell attachability in the dilute oligo-PEG gels. Our findings confirm that elasticity is crucial for effective GGPS, providing a novel method for tailoring hydrogel properties without chemical modification. This research introduces a new paradigm for designing biomaterials with improved cell-scaffolding capabilities, offering significant potential for tissue engineering and regenerative medicine.", "journal": "ACS macro letters", "issn": [ "2161-1653" ], "authors": [ "Shohei Ishikawa", "Takashi Yasuda", "Yasuhide Iwanaga", "Takamasa Sakai" ], "doi": "10.1021/acsmacrolett.4c00448", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330972", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38937526", "title": "Growth of bulk β-Ga", "content": "We report the growth of bulk β-Ga", "journal": "Scientific reports", "issn": [ "2045-2322" ], "authors": [ "A Yoshikawa", "V Kochurikhin", "T Tomida", "I Takahashi", "K Kamada", "Y Shoji", "K Kakimoto" ], "doi": "10.1038/s41598-024-65420-7", "publishedDate": "2024-06-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38937526", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2311.07029v1", "title": "Accurate Time-segmented Loss Model for SiC MOSFETs in Electro-thermal Multi-Rate Simulation", "publishedDate": "2023-11-13T02:28:11", "content": "Compared with silicon (Si) power devices, Silicon carbide (SiC) devices have the advantages of fast switching speed and low on-resistance. However, the effects of non-ideal characteristics of SiC MOSFETs and stray parameters (especially parasitic inductance) on switching losses need to be further evaluated. In this paper, a transient loss model based on SiC MOSFET and SiC Schottky barrier diode (SBD) switching pairs is proposed. The transient process analysis is simplified by time segmentation of the transient process of power switching devices. The electro-thermal simulation calculates the junction temperature and updates the temperature-related parameters with the proposed loss model and the thermal network model. A multi-rate data exchange strategy is proposed to solve the problem of disparity in timescales between circuit simulation and thermal network simulation. The CREE CMF20120D SiC MOSFET device is used for the experimental verification. The experimental results verify the accuracy of the model which provides guidance for the circuit design of SiC MOSFETs. All the parameters of the loss model can be extracted from the datasheet, which is practical in power electronics design.", "doi": null, "authors": [ "Jialin Zheng", "Zhengming Zhao", "Han Xu", "Weicheng Liu", "Yangbin Zeng" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2311.07029v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2311.07029v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38930694", "title": "A Novel 4H-SiC Asymmetric MOSFET with Step Trench.", "content": "In this article, a silicon carbide (SiC) asymmetric MOSFET with a step trench (AST-MOS) is proposed and investigated. The AST-MOS features a step trench with an extra electron current path on one side, thereby increasing the channel density of the device. A thick oxide layer is also employed at the bottom of the step trench, which is used as a new voltage-withstanding region. Furthermore, the ratio of the gate-to-drain capacitance (", "journal": "Micromachines", "issn": [ "2072-666X" ], "authors": [ "Zhong Lan", "Yangjie Ou", "Xiarong Hu", "Dong Liu" ], "doi": "10.3390/mi15060724", "publishedDate": "2024-05-28T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38930694", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2201.03821v1", "title": "Dipole Scattering at the Interface: The Origin of Low Mobility observed in SiC MOSFETs", "publishedDate": "2022-01-11T07:59:48", "content": "In this work, the origin of the low free electron mobility in SiC MOSFETs is investigated using the scattering theory of two-dimensional electron gases. We first establish that neither phonon scattering nor Coulomb scattering can be the cause of the low observed mobility in SiC MOSFETs; we establish this fact by comparing the theoretically calculated mobility considering these effects with experimental observations. By considering the threshold voltages and the effective field dependence of the mobility in SiC MOSFETs, it is concluded that the scattering centers of the dominant mechanism are electrically neutral and exhibit a short-range scattering potential. By considering charge distribution around a neutral defect at the interface, it is established that an electric dipole induced by the defect can act as a short-range scattering potential. We then calculate the mobility in SiC MOSFETs assuming that there exist a high density of dipoles at the interface. The calculated dipole-scattering-limited mobility shows a similar dependence on the effective field dependence to that observed in experimental results. Thus, we conclude that scattering induced by a high density of electric dipoles at the interface is dominant cause of the low mobility in SiC MOSFETs.", "doi": "10.1063/5.0086172", "authors": [ "Tetsuo Hatakeyama", "Hirohisa Hirai", "Mitsuru Simetani", "Dai Okamoto", "Mitsuo Okamoto", "Shinsuke Harada" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "16pages, 3 figures", "pdf_url": "http://arxiv.org/pdf/2201.03821v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2201.03821v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38930654", "title": "A Novel Deep-Trench Super-Junction SiC MOSFET with Improved Specific On-Resistance.", "content": "In this paper, a novel 4H-SiC deep-trench super-junction MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) with a split-gate is proposed and theoretically verified by Sentaurus TCAD simulations. A deep trench filled with P-poly-Si combined with the P-SiC region leads to a charge balance effect. Instead of a full-SiC P region in conventional super-junction MOSFET, this new structure reduces the P region in a super-junction MOSFET, thus helping to lower the specific on-resistance. As a result, the figure of merit (", "journal": "Micromachines", "issn": [ "2072-666X" ], "authors": [ "Rongyao Ma", "Ruoyu Wang", "Hao Fang", "Ping Li", "Longjie Zhao", "Hao Wu", "Zhiyong Huang", "Jingyu Tao", "Shengdong Hu" ], "doi": "10.3390/mi15060684", "publishedDate": "2024-05-16T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38930654", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.05580v1", "title": "Power Cycling Test Bench for Accelerated Life Testing for Reliability Assessment of SiC-MOSFET in Extreme Offshore Environment", "publishedDate": "2020-01-15T22:21:05", "content": "The reliability of power semiconductor switches is important when considering their vital role in power electronic converters for downhole subsea applications. Respect to technology advancements in material sciences, power MOSFETs with wide band gap materials have been proposed such as silicon carbide (SiC) and gallium nitride (GaN) as an alternative to existing silicon (Si) based MOSFETs and IGBTs. However, reliability analysis should be performed before substituting SiC-MOSFETs in the place of existing Si-MOSFETs and IGBTs. Due to costly equipment of experimental test setup for accelerated life test, a good reliable and precise simulation-based test bench should be used to test the life test procedure before implementing actual hardware. Therefore, this paper introduces a power cycle (PC) test bench for accelerated life testing for reliability assessment of SiC-MOSFET in harsh offshore environment. The introduced test bench is a simulation-based of power switch in SimScape and LTspice and has been validated with datasheet of 1.2 kV SiC-MOSFET, CAS300M12BM2 by CREE. Preliminary hardware circuits are also shown for further experimental tests. The captured data from the Device-Under-Test (DUT) in different ambient temperatures are envisioned and provide critical information about the failure mechanisms and lifetime characteristics of power devices. The provided lifetime characteristics data of SiC-MOSFET can be used to statistically estimate the Remaining-Useful-Lifetime (RUL) of component in a real application such as downhole motor drives.", "doi": null, "authors": [ "Shiva Geraei", "Saeed Hasanpour Aghdam" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": "9 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2001.05580v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.05580v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38793215", "title": "Research on Single-Event Burnout Reinforcement Structure of SiC MOSFET.", "content": "In this paper, the single-event burnout (SEB) and reinforcement structure of 1200 V SiC MOSFET (SG-SBD-MOSFET) with split gate and Schottky barrier diode (SBD) embedded were studied. The device structure was established using Sentaurus TCAD, and the transient current changes of single-event effect (SEE), SEB threshold voltage, as well as the regularity of electric field peak distribution transfer were studied when heavy ions were incident from different regions of the device. Based on SEE analysis of the new structural device, two reinforcement structure designs for SEB resistance were studied, namely the expansion of the P+ body contact area and the design of a multi-layer N-type interval buffer layer. Firstly, two reinforcement schemes for SEB were analyzed separately, and then comprehensive design and analysis were carried out. The results showed that the SEB threshold voltage of heavy ions incident from the N+ source region was increased by 16% when using the P+ body contact area extension alone; when the device is reinforced with a multi-layer N-type interval buffer layer alone, the SEB threshold voltage increases by 29%; the comprehensive use of the P+ body contact area expansion and a multi-layer N-type interval buffer layer reinforcement increased the SEB threshold voltage by 33%. Overall, the breakdown voltage of the reinforced device decreased from 1632.935 V to 1403.135 V, which can be seen as reducing the remaining redundant voltage to 17%. The device's performance was not significantly affected.", "journal": "Micromachines", "issn": [ "2072-666X" ], "authors": [ "Qiulan Liao", "Hongxia Liu" ], "doi": "10.3390/mi15050642", "publishedDate": "2024-05-09T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38793215", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2107.10408v1", "title": "Temperature dependence of on-state inter-terminal capacitances (Cgd and Cgs) of SiC MOSFETs and frequency limitations of their measurements", "publishedDate": "2021-07-22T00:35:44", "content": "Inter-terminal capacitances (ITCs) have major influence on the dynamic performance of power SiC MOSFETs. Knowledge of the exact values for the ITCs is required in order to perform accurate and predictive compact model simulations of their dynamic performance. Since commercial SiC MOSFETs are capable of operating in a wide range of temperatures, it is important to know the values of ITCs in the whole temperature range of operation. Direct measurements of the ITCs with standard equipment is possible only at low current levels (i.e. in the off-state (Vgs < Vth) for Vds > 0 V), however their values in the on-state (Vgs>Vth) also influence the MOSFETs switching performance. In this work, ITCs of a planar SiC MOSFET in the on-state are studied by the means of a calibrated TCAD model, revealing substantial temperature dependence in the range of 300-450 K. In the first approximation, this temperature dependence of the ITCs can be explained by a weaker temperature dependence of the MOSFET channel resistance in comparison to its JFET and epitaxial layer resistances. In addition, it is shown that at high frequencies stray inductances of the TO-247-3 package result in a change of the extracted values of the on-state ITCs. This effect is already notable at 1 MHz.", "doi": null, "authors": [ "Alexander Tsibizov", "Roger Stark", "Ulrike Grossner" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "5 pages, 5 figures, accepted to VIRTUAL ISSUE ON SIC 2020 (The 13th\n European Conference on Silicon Carbide and Related Materials (ECSCRM\n 2020-2021))", "pdf_url": "http://arxiv.org/pdf/2107.10408v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2107.10408v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38675307", "title": "The Effects of a Gate Bias Condition on 1.2 kV SiC MOSFETs during Irradiating Gamma-Radiation.", "content": "We investigated the effects of gate bias regarding the degradation of electrical characteristics during gamma irradiation. Moreover, we observed the punch through failure of 1.2 kV rated commercial Silicon Carbide (SiC) Metal Oxide Semiconductor Field Effect Transistors (MOSFETs) due to the influence of gate bias. In addition, the threshold voltage (V", "journal": "Micromachines", "issn": [ "2072-666X" ], "authors": [ "Chaeyun Kim", "Hyowon Yoon", "Yeongeun Park", "Sangyeob Kim", "Gyuhyeok Kang", "Dong-Seok Kim", "Ogyun Seok" ], "doi": "10.3390/mi15040496", "publishedDate": "2024-04-02T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38675307", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1711.02832v1", "title": "High-Speed Gate Driver Using GaN HEMTs for 20-MHz Hard Switching of SiC MOSFETs", "publishedDate": "2017-11-08T05:11:17", "content": "In this paper, we investigated a gate driver using a GaN HEMT push-pull configuration for the high-frequency hard switching of a SiC power MOSFET. Low on-resistance and low input capacitance of GaN HEMTs are suitable for a high-frequency gate driver from the logic level, and robustness of SiC MOSFET with high avalanche capability is suitable for a valve transistor in power converters. Our proposed gate driver consists of digital isolators, complementary Si MOSFETs, and GaN HEMTs. The GaN HEMT push-pull stage has a high driving capability owing to its superior switching characteristics, and complementary Si MOSFETs can enhance the control signal from the digital isolator. We investigated limiting factors of the switching frequency of the proposed gate driver by focusing on each circuit component and proposed an improved driving configuration for the gate driver. As a result, 20-MHz hard switching of a SiC MOSFET was achieved using the improved gate driver with GaN HEMTs.", "doi": null, "authors": [ "Takafumi Okuda", "Takashi Hikihara" ], "journal": null, "tags": [ "eess.SP" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1711.02832v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1711.02832v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38675272", "title": "A Novel Asymmetric Trench SiC Metal-Oxide-Semiconductor Field-Effect Transistor with a Poly-Si/SiC Heterojunction Diode for Optimizing Reverse Conduction Performance.", "content": "In this paper, a novel asymmetric trench SiC MOSFET with a Poly-Si/SiC heterojunction diode (HJD-ATMOS) is designed to improve its reverse conduction characteristics and switching performance. This structure features an integrated heterojunction diode, which improves body diode characteristics without affecting device static characteristics. The heterojunction diode acts as a freewheeling diode during reverse conduction, reducing the cut-in voltage (", "journal": "Micromachines", "issn": [ "2072-666X" ], "authors": [ "Yiren Yu", "Zijun Cheng", "Yi Hu", "Ruiyi Lv", "Shengdong Hu" ], "doi": "10.3390/mi15040461", "publishedDate": "2024-03-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38675272", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2009.04835v1", "title": "Understanding the role of threading dislocations on 4H-SiC MOSFET breakdown under high temperature reverse bias stress", "publishedDate": "2020-09-10T13:20:41", "content": "The origin of dielectric breakdown was studied on 4H-SiC MOSFETs that failed after three months of high temperature reverse bias (HTRB) stress. A local inspection of the failed devices demonstrated the presence of a threading dislocation (TD) at the breakdown location. The nanoscale origin of the dielectric breakdown was highlighted with advanced high-spatial-resolution scanning probe microscopy (SPM) techniques. In particular, SPM revealed the conductive nature of the TD and a local increase of the minority carrier concentration close to the defect. Numerical simulations estimated a hole concentration 13 orders of magnitude larger than in the ideal 4H-SiC crystal. The hole injection in specific regions of the device explained the failure of the gate oxide under stress. In this way, the key role of the TD in the dielectric breakdown of 4H-SiC MOSFET was unambiguously demonstrated.", "doi": "10.1088/1361-6528/ab5ff6", "authors": [ "P. Fiorenza", "M. Alessandrino", "B. Carbone", "C. Di Martino", "A. Russo", "M. Saggio", "C. Venuto", "E. Zanetti", "F. Giannazzo", "F. Roccaforte" ], "journal": "Nanotechnology 31, (2020) 125203", "tags": [ "physics.app-ph", "cond-mat.mtrl-sci" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2009.04835v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2009.04835v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38673265", "title": "4H-SiC MOSFET Threshold Voltage Instability Evaluated via Pulsed High-Temperature Reverse Bias and Negative Gate Bias Stresses.", "content": "This paper presents a reliability study of a conventional 650 V SiC planar MOSFET subjected to pulsed HTRB (High-Temperature Reverse Bias) stress and negative HTGB (High-Temperature Gate Bias) stress defined by a TCAD static simulation showing the electric field distribution across the SiC/SiO", "journal": "Materials (Basel, Switzerland)", "issn": [ "1996-1944" ], "authors": [ "Laura Anoldo", "Edoardo Zanetti", "Walter Coco", "Alfio Russo", "Patrick Fiorenza", "Fabrizio Roccaforte" ], "doi": "10.3390/ma17081908", "publishedDate": "2024-04-17T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38673265", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2310.06184v2", "title": "A Brief Review of Single Event Burnout Failure Mechanisms and Design Tolerances of Silicon Carbide MOSFETs", "publishedDate": "2023-10-09T22:24:06", "content": "Radiation hardening of the MOSFET is of the highest priority for sustaining high-power systems in the space radiation environment. SiC-based power electronics are being looked at as a strong alternative for high power spaceborne power electronic systems. The SiC MOSFET has been shown to be most prone to SEB of the radiation effects. The knowledge of SiC MOSFET device degradation and failure mechanisms are reviewed. Additionally, the viability of rad-tolerant SiC MOSFET designs and the methods of SEB simulation are evaluated. A merit system is proposed to consider the performance of radiation tolerance and nominal electrical performance. Criteria needed for high-fidelity SEB simulation are also reviewed. This paper stands as a necessary analytical review to intercede the development of rad-hard power devices for space and extreme environment applications.", "doi": "10.3390/electronics13081414", "authors": [ "Christopher A. Grome", "Wei Ji" ], "journal": "Electronics 2024, 13, 1414", "tags": [ "physics.ins-det" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2310.06184v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2310.06184v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38398982", "title": "Novel SiC Trench MOSFET with Improved Third-Quadrant Performance and Switching Speed.", "content": "A SiC double-trench MOSFET embedded with a lower-barrier diode and an L-shaped gate-source in the gate trench, showing improved reverse conduction and an improved switching performance, was proposed and studied with 2-D simulations. Compared with a double-trench MOSFET (DT-MOS) and a DT-MOS with a channel-MOS diode (DTC-MOS), the proposed MOS showed a lower voltage drop (", "journal": "Micromachines", "issn": [ "2072-666X" ], "authors": [ "Yangjie Ou", "Zhong Lan", "Xiarong Hu", "Dong Liu" ], "doi": "10.3390/mi15020254", "publishedDate": "2024-01-23T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38398982", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1810.11452v1", "title": "Analysis and Development of SiC MOSFET Boost Converter as Solar PV Pre-regulator", "publishedDate": "2018-10-24T07:55:26", "content": "Renewable energy source such as photovoltaic (PV) cell generates power from the sun light by converting solar power to electrical power with no moving parts and less maintenance. A single photovoltaic cell produces voltage of low level. In order to boost up the voltage, a DC-DC boost converter is used. In order to use this DC-DC converter for high voltage and high frequency applications, Silicon Carbide (SiC) device is most preferred because of larger current carrying capability, higher voltage blocking capability, high operating temperature and less static and dynamic losses than the traditional silicon (Si) power switches. In the proposed work, the static and dynamic characteristics of SiC MOSFET for different temperatures are observed. A SiC MOSFET based boost converter is investigated which is powered by PV source. This DC - DC converter is controlled using a Pulse-Width Method (PWM) and the duty cycle d is calculated for tracking the maximum power point using incremental conductance algorithm of the PV systems implemented in FPGA. Simulation studies are carried out in MATLAB/SIMULINK.A prototype of the SiC converter is built and the results are verified experimentally. The performance parameters of the proposed converter such as output voltage ripple input current ripple and losses are computed and it is compared with the classical silicon (Si) MOSFET converter.", "doi": null, "authors": [ "A. Bharathi sankar", "R. Seyezhai" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mes-hall", "eess.SP", "physics.ins-det" ], "comments": "24 pages", "pdf_url": "http://arxiv.org/pdf/1810.11452v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1810.11452v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38394811", "title": "Emission characteristics of pulse CNT cold cathode X-ray source combined with channel electron multiplier.", "content": "Carbon nanotube (CNT)-based field emission X-ray source with the advantage of fast start-up response offers the chance to achieve high-frequency X-ray emission. In this study, a high-frequency random pulse X-ray source of CNT cold cathode combined with a channel electron multiplier (CEM) was built, and its direct current (DC) and pulse emission characteristics were tested. The DC measurement results were used for parameter selection for performing pulse experiments. During the DC test, with the conditions of 2.2 kV CEM bias voltage and 25 kV anode voltage, the anode currents are 141, 250, and 300 μA at grid voltages of 290, 387.6, and 432.2 V, respectively; the corresponding grid field values are 1.45, 1.94, and 2.16 V/μm. During the pulse test, the amplitude-frequency response of the X-ray source reaches 3.58 MHz at 3 dB. The developed pulse X-ray source was introduced into the X-ray communication (XCOM), and the experimental communication rate reached 6 Mbps with the bit-error-rate of 1.1 × 10", "journal": "Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine", "issn": [ "1872-9800" ], "authors": [ "Kai Miao", "Yunpeng Liu", "Sheng Lai", "Junqiu Yin", "Feixu Xiong", "Xiaoyu Dong", "Xiaobin Tang" ], "doi": "10.1016/j.apradiso.2024.111243", "publishedDate": "2024-02-18T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38394811", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.15174v1", "title": "A Guideline for Silicon Carbide MOSFET Thermal Characterization based on Source-Drain Voltage", "publishedDate": "2022-11-28T09:34:45", "content": "Thermal transient measurement based on source-drain voltage is a standard method to characterize thermal properties of silicon semiconductors but is doubtful to be directly applied to silicon carbide (SiC) devices. To evaluate its feasibility and limitations, this paper conducts a comprehensive investigation into its accuracy, resolution, and stability towards yielding the structure information of SiC MOSFET using the source-drain voltage as the temperature sensitive electrical parameter. The whole characterization process involves two main procedures and associated key testing parameters, such as gate voltages, sensing and heating currents, etc. Their impacts on both the static and dynamic performances are also investigated with the aim of providing a guideline for conducting a reproducible thermal transient measurement for SiC MOSFETs.", "doi": null, "authors": [ "Yi Zhang", "Yichi Zhang", "Zhiliang Xu", "Zhongxu Wang", "Hon Wong", "Zhebie Lu", "Antonio Caruso" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.15174v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.15174v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/38258211", "title": "A Novel 6500 V SiC Trench MOSFET with Integrated Unipolar Diode for Improved Third Quadrant and Switching Characteristics.", "content": "A 6500 V SiC trench MOSFET with integrated unipolar diode (UD-MOS) is proposed to improve reverse conduction characteristics, suppress bipolar degradation, and reduce switching loss. An N type base region under the trench dummy gate provides a low barrier path to suppress hole injection during the reverse conduction operation. The reverse conduction voltage", "journal": "Micromachines", "issn": [ "2072-666X" ], "authors": [ "Hao Wu", "Xuan Li", "Xiaochuan Deng", "Yangyang Wu", "Jiawei Ding", "Wensong Peng", "Bo Zhang" ], "doi": "10.3390/mi15010092", "publishedDate": "2023-12-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/38258211", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2010.09485v1", "title": "Determination of the Interface between Amorphous Insulator and Crystalline 4H-SiC in Transmission Electron Microscope Image by using Convolutional Neural Network", "publishedDate": "2020-10-14T08:28:01", "content": "A rough interface seems to be one of the possible reasons for low channel mobility (conductivity) in SiC MOSFETs. To evaluate the mobility by interface roughness, we drew a boundary line between amorphous insulator and crystalline 4H-SiC in a cross-sectional image obtained by a transmission electron microscope (TEM), by using the deep learning approach of convolutional neural network (CNN). We show that the CNN model recognizes the interface very well, even when the interface is too rough to draw the boundary line manually. Power spectral density of interface roughness was calculated.", "doi": "10.1063/5.0036982", "authors": [ "Hironori Yoshioka", "Tomonori Honda" ], "journal": "AIP Advances 11, 015101 (2021)", "tags": [ "cond-mat.mtrl-sci", "cond-mat.dis-nn", "cs.LG" ], "comments": "16 pages, 8 figures", "pdf_url": "http://arxiv.org/pdf/2010.09485v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2010.09485v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/6xur", "title": "RNA dodecamer with a 6-hydrazino-2-aminopurine modified base", "content": "Thioguanosine Conversion Enables mRNA-Lifetime Evaluation by RNA Sequencing Using Double Metabolic Labeling (TUC-seq DUAL). - Ennifar E, Micura R, Gasser C, Brillet K Angew Chem Int Ed Engl (59) 6881-6886 (2020)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/6xur_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/6xur", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/6xus", "title": "RNA dodecamer with a 6-hydrazino-2-aminopurine modified base", "content": "Thioguanosine Conversion Enables mRNA-Lifetime Evaluation by RNA Sequencing Using Double Metabolic Labeling (TUC-seq DUAL). - Ennifar E, Micura R, Gasser C, Brillet K Angew Chem Int Ed Engl (59) 6881-6886 (2020)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/6xus_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/6xus", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2311.07029v1", "title": "Accurate Time-segmented Loss Model for SiC MOSFETs in Electro-thermal Multi-Rate Simulation", "publishedDate": "2023-11-13T02:28:11", "content": "Compared with silicon (Si) power devices, Silicon carbide (SiC) devices have the advantages of fast switching speed and low on-resistance. However, the effects of non-ideal characteristics of SiC MOSFETs and stray parameters (especially parasitic inductance) on switching losses need to be further evaluated. In this paper, a transient loss model based on SiC MOSFET and SiC Schottky barrier diode (SBD) switching pairs is proposed. The transient process analysis is simplified by time segmentation of the transient process of power switching devices. The electro-thermal simulation calculates the junction temperature and updates the temperature-related parameters with the proposed loss model and the thermal network model. A multi-rate data exchange strategy is proposed to solve the problem of disparity in timescales between circuit simulation and thermal network simulation. The CREE CMF20120D SiC MOSFET device is used for the experimental verification. The experimental results verify the accuracy of the model which provides guidance for the circuit design of SiC MOSFETs. All the parameters of the loss model can be extracted from the datasheet, which is practical in power electronics design.", "doi": null, "authors": [ "Jialin Zheng", "Zhengming Zhao", "Han Xu", "Weicheng Liu", "Yangbin Zeng" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2311.07029v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2311.07029v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331138", "title": "The plant early recombinosome: a high security complex to break DNA during meiosis.", "content": "The formacion of numerous unpredictable DNA Double Strand Breaks (DSBs) on chromosomes iniciates meiotic recombination. In this perspective, we propose a 'multi-key lock' model to secure the risky but necesary breaks as well as a 'one per pair of cromatids' model for the topoisomerase-like early recombinosome. During meiosis, homologous chromosomes recombine at few sites of crossing-overs (COs) to ensure correct segregation. The initiation of meiotic recombination involves the formation of DNA double strand breaks (DSBs) during prophase I. Too many DSBs are dangerous for genome integrity: if these DSBs are not properly repaired, it could potentially lead to chromosomal fragmentation. Too few DSBs are also problematic: if the obligate CO cannot form between bivalents, catastrophic unequal segregation of univalents lead to the formation of sterile aneuploid spores. Research on the regulation of the formation of these necessary but risky DSBs has recently advanced in yeast, mammals and plants. DNA DSBs are created by the enzymatic activity of the early recombinosome, a topoisomerase-like complex containing SPO11. This opinion paper reviews recent insights on the regulation of the SPO11 cofactors necessary for the introduction of temporally and spatially controlled DSBs. We propose that a 'multi-key-lock' model for each subunit of the early recombinosome complex is required to secure the formation of DSBs. We also discuss the hypothetical implications that the established topoisomerase-like nature of the SPO11 core-complex can have in creating DSB in only one of the two replicated chromatids of early prophase I meiotic chromosomes. This hypothetical 'one per pair of chromatids' DSB formation model could optimize the faithful repair of the self-inflicted DSBs. Each DSB could use three potential intact homologous DNA sequences as repair template: one from the sister chromatid and the two others from the homologous chromosomes.", "journal": "Plant reproduction", "issn": [ "2194-7961" ], "authors": [ "Nahid Rafiei", "Arnaud Ronceret" ], "doi": "10.1007/s00497-024-00509-7", "publishedDate": "2024-08-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331138", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2201.03821v1", "title": "Dipole Scattering at the Interface: The Origin of Low Mobility observed in SiC MOSFETs", "publishedDate": "2022-01-11T07:59:48", "content": "In this work, the origin of the low free electron mobility in SiC MOSFETs is investigated using the scattering theory of two-dimensional electron gases. We first establish that neither phonon scattering nor Coulomb scattering can be the cause of the low observed mobility in SiC MOSFETs; we establish this fact by comparing the theoretically calculated mobility considering these effects with experimental observations. By considering the threshold voltages and the effective field dependence of the mobility in SiC MOSFETs, it is concluded that the scattering centers of the dominant mechanism are electrically neutral and exhibit a short-range scattering potential. By considering charge distribution around a neutral defect at the interface, it is established that an electric dipole induced by the defect can act as a short-range scattering potential. We then calculate the mobility in SiC MOSFETs assuming that there exist a high density of dipoles at the interface. The calculated dipole-scattering-limited mobility shows a similar dependence on the effective field dependence to that observed in experimental results. Thus, we conclude that scattering induced by a high density of electric dipoles at the interface is dominant cause of the low mobility in SiC MOSFETs.", "doi": "10.1063/5.0086172", "authors": [ "Tetsuo Hatakeyama", "Hirohisa Hirai", "Mitsuru Simetani", "Dai Okamoto", "Mitsuo Okamoto", "Shinsuke Harada" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "16pages, 3 figures", "pdf_url": "http://arxiv.org/pdf/2201.03821v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2201.03821v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331082", "title": "Full-Incision Double-Eyelid Blepharoplasty with Selective Sensory Nerve Preservation.", "content": "Full-incision double-eyelid blepharoplasty can result in upper eyelid skin numbness postoperatively. However, few studies have examined sensory loss after eyelid surgery. We propose a novel surgical approach with selective sensory nerve preservation to prevent postoperative upper eyelid numbness.", "journal": "Aesthetic plastic surgery", "issn": [ "1432-5241" ], "authors": [ "Jing Liu", "Jinlong Huang", "Jia Liu", "Xiaodong Chen", "Gang Chen", "Jinming Wang" ], "doi": "10.1007/s00266-024-04371-w", "publishedDate": "2024-09-03T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331082", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.05580v1", "title": "Power Cycling Test Bench for Accelerated Life Testing for Reliability Assessment of SiC-MOSFET in Extreme Offshore Environment", "publishedDate": "2020-01-15T22:21:05", "content": "The reliability of power semiconductor switches is important when considering their vital role in power electronic converters for downhole subsea applications. Respect to technology advancements in material sciences, power MOSFETs with wide band gap materials have been proposed such as silicon carbide (SiC) and gallium nitride (GaN) as an alternative to existing silicon (Si) based MOSFETs and IGBTs. However, reliability analysis should be performed before substituting SiC-MOSFETs in the place of existing Si-MOSFETs and IGBTs. Due to costly equipment of experimental test setup for accelerated life test, a good reliable and precise simulation-based test bench should be used to test the life test procedure before implementing actual hardware. Therefore, this paper introduces a power cycle (PC) test bench for accelerated life testing for reliability assessment of SiC-MOSFET in harsh offshore environment. The introduced test bench is a simulation-based of power switch in SimScape and LTspice and has been validated with datasheet of 1.2 kV SiC-MOSFET, CAS300M12BM2 by CREE. Preliminary hardware circuits are also shown for further experimental tests. The captured data from the Device-Under-Test (DUT) in different ambient temperatures are envisioned and provide critical information about the failure mechanisms and lifetime characteristics of power devices. The provided lifetime characteristics data of SiC-MOSFET can be used to statistically estimate the Remaining-Useful-Lifetime (RUL) of component in a real application such as downhole motor drives.", "doi": null, "authors": [ "Shiva Geraei", "Saeed Hasanpour Aghdam" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": "9 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2001.05580v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.05580v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331081", "title": "A Multicenter, Randomized, Double-Blind, Parallel-Grouped, Positive-Controlled, Non-Inferiority Clinical Study to Evaluate the Efficacy and Safety of Injectable Calcium Hydroxylapatite Microsphere Hydrogel Fillers in the Correction of Nasolabial Fold in Chinese Subjects.", "content": "Soft tissue fillers are used to improve the appearance of nasolabial folds (NLFs). This study aimed to compare the efficacy and safety of a new calcium hydroxylapatite microsphere hydrogel filler (Aphranel) versus Restylane for correcting NLFs.", "journal": "Aesthetic plastic surgery", "issn": [ "1432-5241" ], "authors": [ "Yuyan Pan", "Zucheng Luo", "Shuwei Chen", "Nanhang Lu", "Yong Zhang", "Yanwen Yang", "Cheng Chen", "Jiaqi Liu", "Rufan Zhang", "Yining Ge", "Fazhi Qi", "Ming Zhu" ], "doi": "10.1007/s00266-024-04378-3", "publishedDate": "2024-09-03T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331081", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2107.10408v1", "title": "Temperature dependence of on-state inter-terminal capacitances (Cgd and Cgs) of SiC MOSFETs and frequency limitations of their measurements", "publishedDate": "2021-07-22T00:35:44", "content": "Inter-terminal capacitances (ITCs) have major influence on the dynamic performance of power SiC MOSFETs. Knowledge of the exact values for the ITCs is required in order to perform accurate and predictive compact model simulations of their dynamic performance. Since commercial SiC MOSFETs are capable of operating in a wide range of temperatures, it is important to know the values of ITCs in the whole temperature range of operation. Direct measurements of the ITCs with standard equipment is possible only at low current levels (i.e. in the off-state (Vgs < Vth) for Vds > 0 V), however their values in the on-state (Vgs>Vth) also influence the MOSFETs switching performance. In this work, ITCs of a planar SiC MOSFET in the on-state are studied by the means of a calibrated TCAD model, revealing substantial temperature dependence in the range of 300-450 K. In the first approximation, this temperature dependence of the ITCs can be explained by a weaker temperature dependence of the MOSFET channel resistance in comparison to its JFET and epitaxial layer resistances. In addition, it is shown that at high frequencies stray inductances of the TO-247-3 package result in a change of the extracted values of the on-state ITCs. This effect is already notable at 1 MHz.", "doi": null, "authors": [ "Alexander Tsibizov", "Roger Stark", "Ulrike Grossner" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "5 pages, 5 figures, accepted to VIRTUAL ISSUE ON SIC 2020 (The 13th\n European Conference on Silicon Carbide and Related Materials (ECSCRM\n 2020-2021))", "pdf_url": "http://arxiv.org/pdf/2107.10408v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2107.10408v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331059", "title": "Advanced Hybrid Closed-Loop Therapy Compared With Standard Insulin Therapy Intrapartum and Early Postpartum in Women With Type 1 Diabetes: A Secondary Observational Analysis From the CRISTAL Randomized Controlled Trial.", "content": "To determine efficacy and safety of intrapartum and early postpartum advanced hybrid closed-loop (AHCL) therapy compared with standard insulin therapy in pregnant women with type 1 diabetes (T1D).", "journal": "Diabetes care", "issn": [ "1935-5548" ], "authors": [ "Kaat Beunen", "Pieter Gillard", "Nancy Van Wilder", "Dominique Ballaux", "Gerd Vanhaverbeke", "Youri Taes", "Xavier-Philippe Aers", "Frank Nobels", "Liesbeth Van Huffel", "Joke Marlier", "Dahae Lee", "Joke Cuypers", "Vanessa Preumont", "Sarah E Siegelaar", "Rebecca C Painter", "Annouschka Laenen", "Chantal Mathieu", "Katrien Benhalima" ], "doi": "10.2337/dc24-1320", "publishedDate": "2024-08-23T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331059", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1711.02832v1", "title": "High-Speed Gate Driver Using GaN HEMTs for 20-MHz Hard Switching of SiC MOSFETs", "publishedDate": "2017-11-08T05:11:17", "content": "In this paper, we investigated a gate driver using a GaN HEMT push-pull configuration for the high-frequency hard switching of a SiC power MOSFET. Low on-resistance and low input capacitance of GaN HEMTs are suitable for a high-frequency gate driver from the logic level, and robustness of SiC MOSFET with high avalanche capability is suitable for a valve transistor in power converters. Our proposed gate driver consists of digital isolators, complementary Si MOSFETs, and GaN HEMTs. The GaN HEMT push-pull stage has a high driving capability owing to its superior switching characteristics, and complementary Si MOSFETs can enhance the control signal from the digital isolator. We investigated limiting factors of the switching frequency of the proposed gate driver by focusing on each circuit component and proposed an improved driving configuration for the gate driver. As a result, 20-MHz hard switching of a SiC MOSFET was achieved using the improved gate driver with GaN HEMTs.", "doi": null, "authors": [ "Takafumi Okuda", "Takashi Hikihara" ], "journal": null, "tags": [ "eess.SP" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1711.02832v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1711.02832v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331032", "title": "Methylphenidate reduces spatial attentional bias by modulating fronto-striatal connectivity.", "content": "Spatial attention bias reflects tendency to direct attention to specific side in space. This bias reflects asymmetric dopamine (DA) signaling in the striatum. Administration of DA agonists reduces spatial bias, yet the underlying mechanism is not yet clear. To address this, the current study tested whether methylphenidate (MPH; an indirect DA agonist) reduces orienting bias by modulating fronto-striatal connectivity. 54 adults with consistent bias completed the greyscales task which detects subtle biases during fMRI scanning under MPH (20 mg) or placebo, in a double-blind design. As hypothesized, MPH reduced bias by increasing orienting towards non-preferred hemispace, regardless of whether the initial bias was left or right. MPH-induced increases were found in activation of the medial superior frontal gyrus (mSFG: F[1;53] = 4.632, cluster-defining threshold of P < 0.05, minimal cluster size = 0, p_FWE = 0.036, η2 = 0.08) and its functional connectivity with the caudate (left caudate: F[1;53] = 12.664, p_FWE = 0.001, η2 = 0.192; right caudate: F[1;53] = 11.069, p_FWE = 0.002, η2 = 0.172), when orienting towards the non-preferred hemispace. MPH also reduced mSFG activation and fronto-striatal connectivity for the preferred hemispace. Results suggest modulation of frontal excitability due to increased caudate-mSFG functional connectivity. This mechanism may underlie the positive effect of dopaminergic agonists on abnormal patterns of directing attention in space.", "journal": "Cerebral cortex (New York, N.Y. : 1991)", "issn": [ "1460-2199" ], "authors": [ "Leehe Peled-Avron", "Maryana Daood", "Rachel Ben-Hayun", "Michael Nevat", "Judith Aharon-Peretz", "Roee Admon", "Rachel Tomer" ], "doi": "10.1093/cercor/bhae379", "publishedDate": "2024-09-03T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331032", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2009.04835v1", "title": "Understanding the role of threading dislocations on 4H-SiC MOSFET breakdown under high temperature reverse bias stress", "publishedDate": "2020-09-10T13:20:41", "content": "The origin of dielectric breakdown was studied on 4H-SiC MOSFETs that failed after three months of high temperature reverse bias (HTRB) stress. A local inspection of the failed devices demonstrated the presence of a threading dislocation (TD) at the breakdown location. The nanoscale origin of the dielectric breakdown was highlighted with advanced high-spatial-resolution scanning probe microscopy (SPM) techniques. In particular, SPM revealed the conductive nature of the TD and a local increase of the minority carrier concentration close to the defect. Numerical simulations estimated a hole concentration 13 orders of magnitude larger than in the ideal 4H-SiC crystal. The hole injection in specific regions of the device explained the failure of the gate oxide under stress. In this way, the key role of the TD in the dielectric breakdown of 4H-SiC MOSFET was unambiguously demonstrated.", "doi": "10.1088/1361-6528/ab5ff6", "authors": [ "P. Fiorenza", "M. Alessandrino", "B. Carbone", "C. Di Martino", "A. Russo", "M. Saggio", "C. Venuto", "E. Zanetti", "F. Giannazzo", "F. Roccaforte" ], "journal": "Nanotechnology 31, (2020) 125203", "tags": [ "physics.app-ph", "cond-mat.mtrl-sci" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2009.04835v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2009.04835v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330850", "title": "Use of Botulinum Toxin in Upper-Limb Tremor: Systematic Review and Perspectives.", "content": "Tremor is the most common movement disorder, with significant functional and psychosocial consequences. Oral medications have been disappointing or limited by side effects. Surgical techniques are effective but associated with risks and adverse events. Botulinum toxin (BT) represents a promising avenue but there is still no double-blind evidence of efficacy on upper limb function. A systematic review on the effects of BT in upper-limb tremor was conducted.", "journal": "Toxins", "issn": [ "2072-6651" ], "authors": [ "Damien Motavasseli", "Cécile Delorme", "Nicolas Bayle", "Jean-Michel Gracies", "Emmanuel Roze", "Marjolaine Baude" ], "doi": "10.3390/toxins16090392", "publishedDate": "2024-09-07T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330850", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2310.06184v2", "title": "A Brief Review of Single Event Burnout Failure Mechanisms and Design Tolerances of Silicon Carbide MOSFETs", "publishedDate": "2023-10-09T22:24:06", "content": "Radiation hardening of the MOSFET is of the highest priority for sustaining high-power systems in the space radiation environment. SiC-based power electronics are being looked at as a strong alternative for high power spaceborne power electronic systems. The SiC MOSFET has been shown to be most prone to SEB of the radiation effects. The knowledge of SiC MOSFET device degradation and failure mechanisms are reviewed. Additionally, the viability of rad-tolerant SiC MOSFET designs and the methods of SEB simulation are evaluated. A merit system is proposed to consider the performance of radiation tolerance and nominal electrical performance. Criteria needed for high-fidelity SEB simulation are also reviewed. This paper stands as a necessary analytical review to intercede the development of rad-hard power devices for space and extreme environment applications.", "doi": "10.3390/electronics13081414", "authors": [ "Christopher A. Grome", "Wei Ji" ], "journal": "Electronics 2024, 13, 1414", "tags": [ "physics.ins-det" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2310.06184v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2310.06184v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330689", "title": "Recent Progress on Stability of Layered Double Hydroxide-Based Catalysts for Oxygen Evolution Reaction.", "content": "Water electrolysis is regarded as one of the most viable technologies for the generation of green hydrogen. Nevertheless, the anodic oxygen evolution reaction (OER) constitutes a substantial obstacle to the large-scale deployment of this technology, due to the considerable overpotential resulting from the retardation kinetics associated with the OER. The development of low-cost, high-activity, and long-lasting OER catalysts has emerged as a pivotal research area. Layered double hydroxides (LDHs) have garnered significant attention due to their suitability for use with base metals, which are cost-effective and exhibit enhanced activity. However, the current performance of LDHs OER catalysts is still far from meeting the demands of industrial applications, particularly in terms of their long-term stability. In this review, we provide an overview of the causes for the deactivation of LDHs OER catalysts and present an analysis of the various mechanisms employed to improve the stability of these catalysts, including the synthesis of LDH ultrathin nanosheets, adjustment of components and doping, dissolution and redeposition, defect creation and corrosion, and utilization of advanced carbon materials.", "journal": "Nanomaterials (Basel, Switzerland)", "issn": [ "2079-4991" ], "authors": [ "Lielie He", "Yangen Zhou", "Mengran Wang", "Simin Li", "Yanqing Lai" ], "doi": "10.3390/nano14181533", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330689", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1810.11452v1", "title": "Analysis and Development of SiC MOSFET Boost Converter as Solar PV Pre-regulator", "publishedDate": "2018-10-24T07:55:26", "content": "Renewable energy source such as photovoltaic (PV) cell generates power from the sun light by converting solar power to electrical power with no moving parts and less maintenance. A single photovoltaic cell produces voltage of low level. In order to boost up the voltage, a DC-DC boost converter is used. In order to use this DC-DC converter for high voltage and high frequency applications, Silicon Carbide (SiC) device is most preferred because of larger current carrying capability, higher voltage blocking capability, high operating temperature and less static and dynamic losses than the traditional silicon (Si) power switches. In the proposed work, the static and dynamic characteristics of SiC MOSFET for different temperatures are observed. A SiC MOSFET based boost converter is investigated which is powered by PV source. This DC - DC converter is controlled using a Pulse-Width Method (PWM) and the duty cycle d is calculated for tracking the maximum power point using incremental conductance algorithm of the PV systems implemented in FPGA. Simulation studies are carried out in MATLAB/SIMULINK.A prototype of the SiC converter is built and the results are verified experimentally. The performance parameters of the proposed converter such as output voltage ripple input current ripple and losses are computed and it is compared with the classical silicon (Si) MOSFET converter.", "doi": null, "authors": [ "A. Bharathi sankar", "R. Seyezhai" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mes-hall", "eess.SP", "physics.ins-det" ], "comments": "24 pages", "pdf_url": "http://arxiv.org/pdf/1810.11452v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1810.11452v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330634", "title": "Simultaneously Enhancing the Efficiency and Stability of Perovskite Solar Cells by Using P3HT/PEDOT:PSS as a Double Hole Transport Layer.", "content": "The stability issue of perovskite solar cells (PSCs) has long been of concern to researchers. Poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) is commonly used as a hole transport layer (HTL) in the inverted PSCs to achieve efficient and stable performance. However, PEDOT:PSS can corrode ITO, affecting device efficiency. Moreover, the hydrophilic nature of PEDOT:PSS compromises device stability. In this work, Poly (3-hexylthiophene-2,5-diyl) (P3HT), known for its good hydrophobicity, was used to modify the surface of PEDOT:PSS, reducing its water absorption and thereby enhancing the efficiency and stability of PSCs. The results reveal that incorporating P3HT effectively enhances the hydrophobicity of PEDOT:PSS. Furthermore, it fosters the development of large-grain perovskite film on the PEDOT:PSS/P3HT bilayer. This enhancement leads to a power conversion efficiency (PCE) of 19.78% for PSCs, with an increase by 16% than that of reference cells (17.04% of PCE). Following a duration of 1000 h, the PCE for the device modified with P3HT remains above 90%, while the PCE of the reference device is below 70%. These findings suggest that using P3HT in conjunction with PEDOT:PSS as a bilayer HTL can concurrently and proficiently improve the efficiency and stability of PSCs.", "journal": "Nanomaterials (Basel, Switzerland)", "issn": [ "2079-4991" ], "authors": [ "Xiude Yang", "Minghao Luo", "Qianqian Zhang", "Haishen Huang", "Yanqing Yao", "Yuanlin Yang", "Ying Li", "Wan Cheng", "Ping Li" ], "doi": "10.3390/nano14181476", "publishedDate": "2024-09-06T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330634", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.15174v1", "title": "A Guideline for Silicon Carbide MOSFET Thermal Characterization based on Source-Drain Voltage", "publishedDate": "2022-11-28T09:34:45", "content": "Thermal transient measurement based on source-drain voltage is a standard method to characterize thermal properties of silicon semiconductors but is doubtful to be directly applied to silicon carbide (SiC) devices. To evaluate its feasibility and limitations, this paper conducts a comprehensive investigation into its accuracy, resolution, and stability towards yielding the structure information of SiC MOSFET using the source-drain voltage as the temperature sensitive electrical parameter. The whole characterization process involves two main procedures and associated key testing parameters, such as gate voltages, sensing and heating currents, etc. Their impacts on both the static and dynamic performances are also investigated with the aim of providing a guideline for conducting a reproducible thermal transient measurement for SiC MOSFETs.", "doi": null, "authors": [ "Yi Zhang", "Yichi Zhang", "Zhiliang Xu", "Zhongxu Wang", "Hon Wong", "Zhebie Lu", "Antonio Caruso" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.15174v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.15174v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330545", "title": "The dual-functional role of carboxylate in a nickel-iron catalyst towards efficient oxygen evolution.", "content": "The efficiency of the oxygen evolution reaction (OER) is severely limited by the sluggish proton-coupled electron transfer processes and inadequate long-term stability. Herein, we introduce a carboxylate group (TPA) to modify NiFe layered double hydroxide (NiFe LDH@TPA), resulting in notable improvements in both activity and stability. A combination of spectroscopic and theoretical investigations reveals the dual-functional role of incorporated TPA. It facilitates the deprotonation of OER intermediates while strengthening the Fe-O bond and acting as a molecular fence, ensuring superior OER kinetics and anti-dissolution properties. NiFe LDH@TPA delivers a low overpotential of 200 mV at 10 mA cm", "journal": "Nanoscale", "issn": [ "2040-3372" ], "authors": [ "Dan Wu", "Yuanhua Sun", "Xue Zhang", "Xiaokang Liu", "Linlin Cao", "Tao Yao" ], "doi": "10.1039/d4nr03689a", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330545", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2010.09485v1", "title": "Determination of the Interface between Amorphous Insulator and Crystalline 4H-SiC in Transmission Electron Microscope Image by using Convolutional Neural Network", "publishedDate": "2020-10-14T08:28:01", "content": "A rough interface seems to be one of the possible reasons for low channel mobility (conductivity) in SiC MOSFETs. To evaluate the mobility by interface roughness, we drew a boundary line between amorphous insulator and crystalline 4H-SiC in a cross-sectional image obtained by a transmission electron microscope (TEM), by using the deep learning approach of convolutional neural network (CNN). We show that the CNN model recognizes the interface very well, even when the interface is too rough to draw the boundary line manually. Power spectral density of interface roughness was calculated.", "doi": "10.1063/5.0036982", "authors": [ "Hironori Yoshioka", "Tomonori Honda" ], "journal": "AIP Advances 11, 015101 (2021)", "tags": [ "cond-mat.mtrl-sci", "cond-mat.dis-nn", "cs.LG" ], "comments": "16 pages, 8 figures", "pdf_url": "http://arxiv.org/pdf/2010.09485v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2010.09485v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7bna", "title": "ANISOTROPIC THERMAL-PARAMETER REFINEMENT OF THE DNA DODECAMER CGCGAATTCGCG BY THE SEGMENTED RIGID-BODY METHOD", "content": "Anisotropic Thermal-Parameter Refinement of the DNA Dodecamer CGCGAATTCGCG by the Segmented Rigid-Body Method - Holbrook SR, Dickerson RE, Kim S-H Acta Crystallogr., B (41) 255-262 (1985)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7bna_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7bna", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7wkj", "title": "A COVID-19 T-cell response detection method based on a newly identified human CD8+ T cell epitope from SARS-CoV-2-Hubei Province, 2021.", "content": "A COVID-19 T-Cell Response Detection Method Based on a Newly Identified Human CD8+ T Cell Epitope from SARS-CoV-2 - Hubei Province, China, 2021. - Zhang J, Lu D, Li M, Liu MS, Yao SJ, Zhan JB, Liu J, Gao GF China CDC Wkly (4) 83-87 (2022)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7wkj_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7wkj", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2mor", "title": "A tensor-free method for the structural and dynamical refinement of proteins using residual dipolar couplings", "content": "A tensor-free method for the structural and dynamical refinement of proteins using residual dipolar couplings. - Camilloni C, Vendruscolo M J Phys Chem B (119) 653-61 (2015)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2mor_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2mor", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2nr2", "title": "The MUMO (minimal under-restraining minimal over-restraining) method for the determination of native states ensembles of proteins", "content": "The MUMO (minimal under-restraining minimal over-restraining) method for the determination of native state ensembles of proteins. - Richter B, Gsponer J, Varnai P, Salvatella X, Vendruscolo M J Biomol NMR (37) 117-35 (2007)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2nr2_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2nr2", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h56", "title": "Crystal structure of endothiapepsin PF_cryo3 in complex with AC39729 at 100 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h56_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h56", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h5w", "title": "Crystal structure of endothiapepsin PF_RT2 in complex with JFD03909 at 296 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h5w_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h5w", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h58", "title": "Crystal structure of endothiapepsin PF_RT2 in complex with AC39729 at 296 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h58_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h58", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h5u", "title": "Crystal structure of endothiapepsin PF_cryo3 in complex with JFD03909 at 100 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h5u_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h5u", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331462", "title": "Ablation of Supraventricular Arrhythmias With as Low as Reasonably Achievable X-Ray exposure (AALARA): Results of Prospective, Observational, Multicenter, Multinational, Open-Label Registry Study on Real World Data Using Routine Ensite 3D Mapping During SVT Ablation.", "content": "The reduction of fluoroscopic exposure during catheter ablation of supraventricular arrhythmias is widely adopted by experienced electrophysiology physicians with a relatively short learning curve and is becoming the standard of care in many parts of the world. While observational studies in the United States and some parts of Western Europe have evaluated the minimal fluoroscopic approach, there are scarce real-world data for this technique and the generalizability of outcomes in other economic regions.", "journal": "Pacing and clinical electrophysiology : PACE", "issn": [ "1540-8159" ], "authors": [ "Mohammad Amin", "Ayan Abdrakhmanov", "Evgeniy Kropotkin", "Vasil Traykov", "Zoltán Salló", "László Gellér", "Faizel Lorgat", "Oleg Sapelnikov", "Ondrej Toman", "Khalid Al-Muti", "Mohamed Aljaabari", "Adrian Bystriansky", "László Környei", "Nebojša Mujović", "Stefanie Simons", "Nándor Szegedi" ], "doi": "10.1111/pace.15075", "publishedDate": "2024-09-04T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331462", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2310.06184v2", "title": "A Brief Review of Single Event Burnout Failure Mechanisms and Design Tolerances of Silicon Carbide MOSFETs", "publishedDate": "2023-10-09T22:24:06", "content": "Radiation hardening of the MOSFET is of the highest priority for sustaining high-power systems in the space radiation environment. SiC-based power electronics are being looked at as a strong alternative for high power spaceborne power electronic systems. The SiC MOSFET has been shown to be most prone to SEB of the radiation effects. The knowledge of SiC MOSFET device degradation and failure mechanisms are reviewed. Additionally, the viability of rad-tolerant SiC MOSFET designs and the methods of SEB simulation are evaluated. A merit system is proposed to consider the performance of radiation tolerance and nominal electrical performance. Criteria needed for high-fidelity SEB simulation are also reviewed. This paper stands as a necessary analytical review to intercede the development of rad-hard power devices for space and extreme environment applications.", "doi": "10.3390/electronics13081414", "authors": [ "Christopher A. Grome", "Wei Ji" ], "journal": "Electronics 2024, 13, 1414", "tags": [ "physics.ins-det" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2310.06184v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2310.06184v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331444", "title": "Silicone sling surgery for congenital ptosis: Tarsal tunnel technique.", "content": "This was a prospective, interventional, comparative study conducted on patients with congenital simple severe ptosis. A novel method of silicone rod fixation to the tarsus (tarsal tunnel technique, group 1) was done compared with a conventional technique of silicone rod fixation (suture fixation technique, group 2) in frontalis suspension surgery. A total of 30 patients were randomized into two groups of 15 patients each. Postoperatively, MRD1, vertical palpebral aperture, and eyelid fold height were comparable in both groups till the last follow-up with stability in eyelid position. Patient satisfaction scores showed similar results with good-fair satisfaction grading in 13 patients in group 1 and 11 patients in group 2 at 6 months follow-up. No significant complications occurred in either group. Tarsal tunnel fixation of silicone rods is a novel method in sling surgery with optimal cosmetic and function outcomes. Further long-term studies are needed to validate the results of the technique.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Neelam Pushker", "Manish Mahabir", "Sahil Agrawal", "Mandeep Singh Bajaj" ], "doi": "10.4103/IJO.IJO_2766_23", "publishedDate": "2024-03-10T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331444", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1810.11452v1", "title": "Analysis and Development of SiC MOSFET Boost Converter as Solar PV Pre-regulator", "publishedDate": "2018-10-24T07:55:26", "content": "Renewable energy source such as photovoltaic (PV) cell generates power from the sun light by converting solar power to electrical power with no moving parts and less maintenance. A single photovoltaic cell produces voltage of low level. In order to boost up the voltage, a DC-DC boost converter is used. In order to use this DC-DC converter for high voltage and high frequency applications, Silicon Carbide (SiC) device is most preferred because of larger current carrying capability, higher voltage blocking capability, high operating temperature and less static and dynamic losses than the traditional silicon (Si) power switches. In the proposed work, the static and dynamic characteristics of SiC MOSFET for different temperatures are observed. A SiC MOSFET based boost converter is investigated which is powered by PV source. This DC - DC converter is controlled using a Pulse-Width Method (PWM) and the duty cycle d is calculated for tracking the maximum power point using incremental conductance algorithm of the PV systems implemented in FPGA. Simulation studies are carried out in MATLAB/SIMULINK.A prototype of the SiC converter is built and the results are verified experimentally. The performance parameters of the proposed converter such as output voltage ripple input current ripple and losses are computed and it is compared with the classical silicon (Si) MOSFET converter.", "doi": null, "authors": [ "A. Bharathi sankar", "R. Seyezhai" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mes-hall", "eess.SP", "physics.ins-det" ], "comments": "24 pages", "pdf_url": "http://arxiv.org/pdf/1810.11452v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1810.11452v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331443", "title": "Evaluation of antioxidant status of lens epithelial cells in cataract patients.", "content": "The main factor that causes cataracts is the increased oxidative stress and imbalance of an antioxidant defense mechanism, which leads to significant changes in the lens microarchitecture. Senile cataract is the most common type of acquired cataracts due to aging.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Kranti Santosh Sorte Gawali", "Avinash Namdeo Jadhao", "Trupti Diwan Ramteke", "Neelam Jayant Patil", "Harshal Sahare" ], "doi": "10.4103/IJO.IJO_19_24", "publishedDate": "2024-04-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331443", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.15174v1", "title": "A Guideline for Silicon Carbide MOSFET Thermal Characterization based on Source-Drain Voltage", "publishedDate": "2022-11-28T09:34:45", "content": "Thermal transient measurement based on source-drain voltage is a standard method to characterize thermal properties of silicon semiconductors but is doubtful to be directly applied to silicon carbide (SiC) devices. To evaluate its feasibility and limitations, this paper conducts a comprehensive investigation into its accuracy, resolution, and stability towards yielding the structure information of SiC MOSFET using the source-drain voltage as the temperature sensitive electrical parameter. The whole characterization process involves two main procedures and associated key testing parameters, such as gate voltages, sensing and heating currents, etc. Their impacts on both the static and dynamic performances are also investigated with the aim of providing a guideline for conducting a reproducible thermal transient measurement for SiC MOSFETs.", "doi": null, "authors": [ "Yi Zhang", "Yichi Zhang", "Zhiliang Xu", "Zhongxu Wang", "Hon Wong", "Zhebie Lu", "Antonio Caruso" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.15174v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.15174v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331437", "title": "Analysis of anthropometric measurements taken from the periocular region in healthy young individuals with different somatotypes.", "content": "Anthropometric parameters related with the periocular region (PR) have gained great importance with the optical technology used in the treatment of eye defects. They have also become important parameters that determine the limits of treatment in aesthetic surgery procedures in PR and the treatment of orbital diseases. The aim of this study was to examine the relationship of PR measurements with somatotype.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Sıdıka Karaketir", "Demet Şencan", "Serdar Çolakoğlu", "Deniz Şenol" ], "doi": "10.4103/IJO.IJO_2836_23", "publishedDate": "2024-02-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331437", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2311.07029v1", "title": "Accurate Time-segmented Loss Model for SiC MOSFETs in Electro-thermal Multi-Rate Simulation", "publishedDate": "2023-11-13T02:28:11", "content": "Compared with silicon (Si) power devices, Silicon carbide (SiC) devices have the advantages of fast switching speed and low on-resistance. However, the effects of non-ideal characteristics of SiC MOSFETs and stray parameters (especially parasitic inductance) on switching losses need to be further evaluated. In this paper, a transient loss model based on SiC MOSFET and SiC Schottky barrier diode (SBD) switching pairs is proposed. The transient process analysis is simplified by time segmentation of the transient process of power switching devices. The electro-thermal simulation calculates the junction temperature and updates the temperature-related parameters with the proposed loss model and the thermal network model. A multi-rate data exchange strategy is proposed to solve the problem of disparity in timescales between circuit simulation and thermal network simulation. The CREE CMF20120D SiC MOSFET device is used for the experimental verification. The experimental results verify the accuracy of the model which provides guidance for the circuit design of SiC MOSFETs. All the parameters of the loss model can be extracted from the datasheet, which is practical in power electronics design.", "doi": null, "authors": [ "Jialin Zheng", "Zhengming Zhao", "Han Xu", "Weicheng Liu", "Yangbin Zeng" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2311.07029v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2311.07029v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2201.03821v1", "title": "Dipole Scattering at the Interface: The Origin of Low Mobility observed in SiC MOSFETs", "publishedDate": "2022-01-11T07:59:48", "content": "In this work, the origin of the low free electron mobility in SiC MOSFETs is investigated using the scattering theory of two-dimensional electron gases. We first establish that neither phonon scattering nor Coulomb scattering can be the cause of the low observed mobility in SiC MOSFETs; we establish this fact by comparing the theoretically calculated mobility considering these effects with experimental observations. By considering the threshold voltages and the effective field dependence of the mobility in SiC MOSFETs, it is concluded that the scattering centers of the dominant mechanism are electrically neutral and exhibit a short-range scattering potential. By considering charge distribution around a neutral defect at the interface, it is established that an electric dipole induced by the defect can act as a short-range scattering potential. We then calculate the mobility in SiC MOSFETs assuming that there exist a high density of dipoles at the interface. The calculated dipole-scattering-limited mobility shows a similar dependence on the effective field dependence to that observed in experimental results. Thus, we conclude that scattering induced by a high density of electric dipoles at the interface is dominant cause of the low mobility in SiC MOSFETs.", "doi": "10.1063/5.0086172", "authors": [ "Tetsuo Hatakeyama", "Hirohisa Hirai", "Mitsuru Simetani", "Dai Okamoto", "Mitsuo Okamoto", "Shinsuke Harada" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "16pages, 3 figures", "pdf_url": "http://arxiv.org/pdf/2201.03821v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2201.03821v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331418", "title": "Hydrophobic ZIF-8 nanoparticles loaded on chitosan for improved methanol adsorption from fermented wine.", "content": "Metal-organic frameworks (MOFs) have great potential for the adsorption of minor molecular alcohols in the vapor phase. However, the drawbacks of powdered MOFs, including low recyclability and problematic separation, limit their application in fermented wine. Chitosan (CS) is a low-cost, eco-friendly, moldable matrix used in the food industry. In this study, a novel CS@ZIF-8 adsorbent with excellent microporous surface area was successfully synthesized by incorporating hydrophobic ZIF-8 into CS. The results showed that CS@ZIF-8 beads had a high adsorption affinity for methanol at a Zn", "journal": "Journal of food science", "issn": [ "1750-3841" ], "authors": [ "Mibin Lin", "Jia Sha", "Zhonghao Zhu", "Penghui Ye", "Kai Zhao", "Kaijun Xiao" ], "doi": "10.1111/1750-3841.17397", "publishedDate": "2024-08-31T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331418", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2212.13211v1", "title": "Adaptive Control of Surge Impedance for Electric Motors in Motor Drive Systems", "publishedDate": "2022-12-26T16:40:55", "content": "This article studies the possibility of controlling the surge impedance of the electric motor in motor drives. The existing solution to suppress (or eliminate) the reflected wave impact on the motor insulation run by a Si-IGBT or SiC-MOSFET-based drive is to use either a sinewave filter or dv/dt filter. The alternative solution suggested in this article is to implement a high-bandwidth electronic circuit at the end of the cable or at the motor terminals to match the surge impedance of the cable and motor. The high-frequency voltage ringing due to the reflected waves in motor drives is around 1 MHz, depending on the cable parameters and the length of the cable. In the proposed method, the electronic circuit can quickly detect the dv/dt rise and fall edges and adjust the electronic circuit equivalent impedance when pulses arrive the motor terminals. Thus, the cable and motor surge impedances can be matched over a short time to prevent reflected waves. As a result, the leakage currents passing through the ball bearing and overvoltage stress on the motor insulation can be suppressed significantly.", "doi": null, "authors": [ "Fahmid Sadeque", "Fariba Fateh", "JiangBiao He", "Behrooz Mirafzal" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2212.13211v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2212.13211v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331382", "title": "Modular Synthesis of Azidobicyclo[2.1.1]hexanes via (3 + 2) Annulation of α-Substituted Vinyl Azides and Bicyclo[1.1.0]butanes.", "content": "Here, we present a mild and rapid method to access azidobicyclo[2.1.1]hexanes via formal (3 + 2) cycloaddition of α-substituted vinyl azides and bicyclo[1.1.0]butanes under Lewis acid catalysis. A wide range of α-substituted vinyl azides were tolerated under mild conditions. Notably, the resulting cycloadducts could be transformed into structurally attractive 3-azabicyclo[3.1.1]heptenes through microwave-promoted rearrangement. The utilities were highlighted by copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition of tertiary alkyl azide and further transformation of the azide and ketone groups.", "journal": "The Journal of organic chemistry", "issn": [ "1520-6904" ], "authors": [ "Sai Hu", "Yuhong Gao", "Yuming Pan", "Dongshun Ni", "Li Deng" ], "doi": "10.1021/acs.joc.4c01920", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331382", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2407.13370v2", "title": "Complementary two dimensional carrier profiles of 4H-SiC MOSFETs by Scanning Spreading Resistance Microscopy and Scanning Capacitance Microscopy", "publishedDate": "2024-07-18T10:26:15", "content": "This paper reports the results presented in an invited poster during the International Conference on Silicon Carbide and Related Materials (ICSCRM) 2023 held in Sorrento, Italy. The suitability of scanning probe methods based on atomic force microscopy (AFM) measurements is explored to investigate with high spatial resolution the elementary cell of 4H-SiC power MOSFETs. The two-dimensional (2D) cross-sectional maps demonstrated a high spatial resolution of about 5 nm using the SSRM capabilities. Furthermore, the SCM capabilities enabled visualizing the fluctuations of charge carrier concentration across the different parts of the MOSFETs elementary cell.", "doi": null, "authors": [ "Patrick Fiorenza", "Marco Zignale", "Edoardo. Zanetti", "Mario S. Alessandrino", "Beatrice Carbone", "Alfio Guarnera", "Mario Saggio", "Filippo Giannazzo", "Fabrizio Roccaforte" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mtrl-sci" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2407.13370v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2407.13370v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331381", "title": "Liquid Atmospheric Pressure Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Using a Commercial Ion Source and Orbitrap Mass Analyzer.", "content": "A liquid atmospheric pressure-matrix-assisted laser desorption/ionization (LAP-MALDI) method has been developed and applied to a commercial AP-MALDI source on a hybrid orbitrap mass analyzer. It is shown that electrospray ionization (ESI)-like mass spectra of a range of peptides and proteins can be acquired by LAP-MALDI mass spectrometry (MS) as previously demonstrated on a homemade LAP-MALDI-Q-TOF setup but without the need of any modification to the commercially available MS equipment used. Multiply charged peptide ions were recorded with a resolution of around 100,000 and a mass accuracy of less than 5 ppm. The higher resolution and mass accuracy of the orbitrap analyzer compared with previously employed Q-TOF instrumentation provided high confidence in bacterial proteoform and species identification by top-down protein analysis.", "journal": "Analytical chemistry", "issn": [ "1520-6882" ], "authors": [ "Bob Challen", "Lily R Adair", "Rainer Cramer" ], "doi": "10.1021/acs.analchem.4c04458", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331381", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.05580v1", "title": "Power Cycling Test Bench for Accelerated Life Testing for Reliability Assessment of SiC-MOSFET in Extreme Offshore Environment", "publishedDate": "2020-01-15T22:21:05", "content": "The reliability of power semiconductor switches is important when considering their vital role in power electronic converters for downhole subsea applications. Respect to technology advancements in material sciences, power MOSFETs with wide band gap materials have been proposed such as silicon carbide (SiC) and gallium nitride (GaN) as an alternative to existing silicon (Si) based MOSFETs and IGBTs. However, reliability analysis should be performed before substituting SiC-MOSFETs in the place of existing Si-MOSFETs and IGBTs. Due to costly equipment of experimental test setup for accelerated life test, a good reliable and precise simulation-based test bench should be used to test the life test procedure before implementing actual hardware. Therefore, this paper introduces a power cycle (PC) test bench for accelerated life testing for reliability assessment of SiC-MOSFET in harsh offshore environment. The introduced test bench is a simulation-based of power switch in SimScape and LTspice and has been validated with datasheet of 1.2 kV SiC-MOSFET, CAS300M12BM2 by CREE. Preliminary hardware circuits are also shown for further experimental tests. The captured data from the Device-Under-Test (DUT) in different ambient temperatures are envisioned and provide critical information about the failure mechanisms and lifetime characteristics of power devices. The provided lifetime characteristics data of SiC-MOSFET can be used to statistically estimate the Remaining-Useful-Lifetime (RUL) of component in a real application such as downhole motor drives.", "doi": null, "authors": [ "Shiva Geraei", "Saeed Hasanpour Aghdam" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": "9 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2001.05580v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.05580v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331379", "title": "A Method for Treating Significant Conformational Changes in Alchemical Free Energy Simulations of Protein-Ligand Binding.", "content": "Relative binding free energy (RBFE) simulation is a rigorous approach to the calculation of quantitatively accurate binding free energy values for protein-ligand binding in which a reference binder is gradually converted to a target binder through alchemical transformation during the simulation. The success of such simulations relies on being able to accurately sample the correct conformational phase space for each alchemical state; however, this becomes a challenge when a significant conformation change occurs between the reference and target binder-receptor complexes. Increasing the simulation time and using enhanced sampling methods can be helpful, but effects can be limited, especially when the free energy barrier between conformations is high or when the correct target complex conformation is difficult to find and maintain. Current RBFE protocols seed the reference complex structure into every alchemical window of the simulation. In our study, we describe an improved protocol in which the reference structure is seeded into the first half of the alchemical windows, and the target structure is seeded into the second half of the alchemical windows. By applying information about the relevant correct end point conformations to different simulation windows from the beginning, the need for large barrier crossings or simulation prediction of the correct structures during an alchemical simulation is in many cases obviated. In the diverse cases we examine below, the simulations yielded free energy predictions that are satisfactory as compared to experiment and superior to running the simulations utilizing the conventional protocol. The method is straightforward to implement for publicly available FEP workflows.", "journal": "Journal of chemical theory and computation", "issn": [ "1549-9626" ], "authors": [ "Junzhuo Liao", "Alina P Sergeeva", "Edward D Harder", "Lingle Wang", "Jared M Sampson", "Barry Honig", "Richard A Friesner" ], "doi": "10.1021/acs.jctc.4c00954", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331379", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2107.10408v1", "title": "Temperature dependence of on-state inter-terminal capacitances (Cgd and Cgs) of SiC MOSFETs and frequency limitations of their measurements", "publishedDate": "2021-07-22T00:35:44", "content": "Inter-terminal capacitances (ITCs) have major influence on the dynamic performance of power SiC MOSFETs. Knowledge of the exact values for the ITCs is required in order to perform accurate and predictive compact model simulations of their dynamic performance. Since commercial SiC MOSFETs are capable of operating in a wide range of temperatures, it is important to know the values of ITCs in the whole temperature range of operation. Direct measurements of the ITCs with standard equipment is possible only at low current levels (i.e. in the off-state (Vgs < Vth) for Vds > 0 V), however their values in the on-state (Vgs>Vth) also influence the MOSFETs switching performance. In this work, ITCs of a planar SiC MOSFET in the on-state are studied by the means of a calibrated TCAD model, revealing substantial temperature dependence in the range of 300-450 K. In the first approximation, this temperature dependence of the ITCs can be explained by a weaker temperature dependence of the MOSFET channel resistance in comparison to its JFET and epitaxial layer resistances. In addition, it is shown that at high frequencies stray inductances of the TO-247-3 package result in a change of the extracted values of the on-state ITCs. This effect is already notable at 1 MHz.", "doi": null, "authors": [ "Alexander Tsibizov", "Roger Stark", "Ulrike Grossner" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "5 pages, 5 figures, accepted to VIRTUAL ISSUE ON SIC 2020 (The 13th\n European Conference on Silicon Carbide and Related Materials (ECSCRM\n 2020-2021))", "pdf_url": "http://arxiv.org/pdf/2107.10408v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2107.10408v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331345", "title": "Cortical microstructural alterations in different stages of Parkinson's disease.", "content": "To explore the cortical microstructural alterations in Parkinson's disease (PD) at different stages. 149 PD patients and 76 healthy controls were included. PD patients were divided into early stage PD (EPD) (Hoehn-Yahr stage ≤ 2) and moderate-to-late stage PD (MLPD) (Hoehn-Yahr stage ≥ 2.5) according to their Hoehn-Yahr stages. All participants underwent two-shell diffusion MRI and the images were fitted to Neurite Orientation Dispersion and Density Imaging (NODDI) model to obtain the neurite density index (NDI) and orientation dispersion index (ODI) to reflect the cortical microstructure. We used gray matter-based spatial statistics method to compare the voxel-wise cortical NODDI metrics between groups. Partial correlation was used to correlate the NODDI metrics and global composite outcome in PD patients. Compared with healthy controls, EPD patients showed lower ODI in widespread regions, covering bilateral frontal, temporal, parietal and occipital cortices, as well as regional lower NDI in bilateral cingulate and frontal lobes. Compared with healthy controls, MLPD patients showed lower ODI and NDI in more widespread regions. Compared with EPD patients, MLPD patients showed lower ODI in bilateral temporal, parietal and occipital cortices, where the ODI values were negatively correlated with global composite outcome in PD patients. PD patients showed widespread cortical microstructural degeneration, characterized by reduced neurite density and orientation dispersion, and the cortical neuritic microstructure exhibit progressive degeneration during the progression of PD.", "journal": "Brain imaging and behavior", "issn": [ "1931-7565" ], "authors": [ "Xueqin Bai", "Tao Guo", "Xiaojun Guan", "Cheng Zhou", "Jingjing Wu", "Haoting Wu", "Xiaocao Liu", "Chengqing Wu", "Jingwen Chen", "Jiaqi Wen", "Jianmei Qin", "Sijia Tan", "Xiaojie DuanMu", "Luyan Gu", "Ting Gao", "Peiyu Huang", "Baorong Zhang", "Xiaojun Xu", "Xiangwu Zheng", "Minming Zhang" ], "doi": "10.1007/s11682-024-00931-5", "publishedDate": "2024-09-12T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331345", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1711.02832v1", "title": "High-Speed Gate Driver Using GaN HEMTs for 20-MHz Hard Switching of SiC MOSFETs", "publishedDate": "2017-11-08T05:11:17", "content": "In this paper, we investigated a gate driver using a GaN HEMT push-pull configuration for the high-frequency hard switching of a SiC power MOSFET. Low on-resistance and low input capacitance of GaN HEMTs are suitable for a high-frequency gate driver from the logic level, and robustness of SiC MOSFET with high avalanche capability is suitable for a valve transistor in power converters. Our proposed gate driver consists of digital isolators, complementary Si MOSFETs, and GaN HEMTs. The GaN HEMT push-pull stage has a high driving capability owing to its superior switching characteristics, and complementary Si MOSFETs can enhance the control signal from the digital isolator. We investigated limiting factors of the switching frequency of the proposed gate driver by focusing on each circuit component and proposed an improved driving configuration for the gate driver. As a result, 20-MHz hard switching of a SiC MOSFET was achieved using the improved gate driver with GaN HEMTs.", "doi": null, "authors": [ "Takafumi Okuda", "Takashi Hikihara" ], "journal": null, "tags": [ "eess.SP" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1711.02832v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1711.02832v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/1i9f", "title": "STRUCTURAL CHARACTERIZATION OF THE COMPLEX OF THE REV RESPONSE ELEMENT RNA WITH A SELECTED PEPTIDE", "content": "Structural characterization of the complex of the Rev response element RNA with a selected peptide. - Zhang Q, Harada K, Cho HS, Frankel A, Wemmer DE Chem Biol (8) 511-20 (2001)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/1i9f_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/1i9f", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1, 2 ], "score": 3.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4evu", "title": "Crystal structure of C-terminal domain of putative periplasmic protein ydgH from S. enterica", "content": "Structural and functional characterization of DUF1471 domains of Salmonella proteins SrfN, YdgH/SssB, and YahO. - Michalska K, Cui H, Xu X, Brown RN, Cort JR, Heffron F, Nakayasu ES, Savchenko A, Adkins JN, Joachimiak A, Program for the Characterization of Secreted Effector Proteins (PCSEP), Midwest Center for Structural Genomics (MCSG) PLoS One (9) e101787 (2014)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4evu_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4evu", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/6jic", "title": "Identification and Characterization of a carboxypeptidase inhibitor from Lycium barbarum", "content": "Identification and characterization of a wolfberry carboxypeptidase inhibitor from Lycium barbarum. - Tan WL, Wong KH, Huang JY, Tay SV, Wang SJ Food Chem (351) 129338 (2021)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/6jic_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/6jic", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2knp", "title": "Isolation and characterization of peptides from Momordica cochinchinensis seeds.", "content": "Isolation and characterization of peptides from Momordica cochinchinensis seeds. - Daly NL, Chan L J Nat Prod (72) 1453-8 (2009)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2knp_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2knp", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2k3c", "title": "Structural and Functional Characterization of TM IX of the NHE1 Isoform of the Na+/H+ Exchanger", "content": "Structural and functional characterization of transmembrane segment IX of the NHE1 isoform of the Na+/H+ exchanger. - Reddy T, Ding J, Li X, Sykes BD, Fliegel L, Rainey JK J Biol Chem (283) 22018-30 (2008)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2k3c_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2k3c", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331411", "title": "Unraveling the adsorption-limited hydrogen oxidation reaction at palladium surface via in situ electron microscopy.", "content": "Palladium (Pd) catalysts have been extensively studied for the direct synthesis of H", "journal": "Proceedings of the National Academy of Sciences of the United States of America", "issn": [ "1091-6490" ], "authors": [ "Yukun Liu", "Kunmo Koo", "Zugang Mao", "Xianbiao Fu", "Xiaobing Hu", "Vinayak P Dravid" ], "doi": "10.1073/pnas.2408277121", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331411", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.15174v1", "title": "A Guideline for Silicon Carbide MOSFET Thermal Characterization based on Source-Drain Voltage", "publishedDate": "2022-11-28T09:34:45", "content": "Thermal transient measurement based on source-drain voltage is a standard method to characterize thermal properties of silicon semiconductors but is doubtful to be directly applied to silicon carbide (SiC) devices. To evaluate its feasibility and limitations, this paper conducts a comprehensive investigation into its accuracy, resolution, and stability towards yielding the structure information of SiC MOSFET using the source-drain voltage as the temperature sensitive electrical parameter. The whole characterization process involves two main procedures and associated key testing parameters, such as gate voltages, sensing and heating currents, etc. Their impacts on both the static and dynamic performances are also investigated with the aim of providing a guideline for conducting a reproducible thermal transient measurement for SiC MOSFETs.", "doi": null, "authors": [ "Yi Zhang", "Yichi Zhang", "Zhiliang Xu", "Zhongxu Wang", "Hon Wong", "Zhebie Lu", "Antonio Caruso" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.15174v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.15174v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331343", "title": "Detection of Shiga toxin-producing Escherichia coli in dairy cows: genetic characterization and inhibition of adherence by catlle anti-STEC antibodies to HEp-2 cell.", "content": "Shiga toxin-producing Escherichia coli (STEC) is a zoonotic pathogen associated with severe disease. Cattle are recognized as the primary animal reservoir of STEC. This study reports the occurrence and characterization of STEC from dairy cows and evaluates the inhibition of adherence by catlle anti-STEC antibodies to the HEp-2 cell. From 151 samples, 30% (n = 45) were positive for stx by PCR screening (25.21% of dairy cows and 46.8% of growing calves). From these positive samples, 17 STEC isolates were characterized. In dairy cows, 3 out of 17 samples carried stx2, 3 out of 17 possessed stx1, and 2 out of 17 carried stx1/stx2. In growing cows, 8 out of 17 samples carried stx1 and 1 out of 17 carried stx1/stx2. Other virulence factors such as ehxA, saa, iha, cah, and eae were detected. The strains were typed into 3 E. coli O groups (O26, O91, and O130). The analysis of the HEp-2 adherence assays indicated that all serum from both cattle categories presented high levels of inhibition of adherence. Considering the severity of the symptoms caused by STEC in humans, searching for factors influencing the colonization of STEC in cattle would help identify strategies to avoid transmission and STEC infection.", "journal": "Veterinary research communications", "issn": [ "1573-7446" ], "authors": [ "Rocío Colello", "M Victoria Vélez", "Marcelo Rodríguez", "Ariel Rogé", "Analía I Etcheverría", "Nora Lía Padola" ], "doi": "10.1007/s11259-024-10557-z", "publishedDate": "2024-09-21T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331343", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2311.07029v1", "title": "Accurate Time-segmented Loss Model for SiC MOSFETs in Electro-thermal Multi-Rate Simulation", "publishedDate": "2023-11-13T02:28:11", "content": "Compared with silicon (Si) power devices, Silicon carbide (SiC) devices have the advantages of fast switching speed and low on-resistance. However, the effects of non-ideal characteristics of SiC MOSFETs and stray parameters (especially parasitic inductance) on switching losses need to be further evaluated. In this paper, a transient loss model based on SiC MOSFET and SiC Schottky barrier diode (SBD) switching pairs is proposed. The transient process analysis is simplified by time segmentation of the transient process of power switching devices. The electro-thermal simulation calculates the junction temperature and updates the temperature-related parameters with the proposed loss model and the thermal network model. A multi-rate data exchange strategy is proposed to solve the problem of disparity in timescales between circuit simulation and thermal network simulation. The CREE CMF20120D SiC MOSFET device is used for the experimental verification. The experimental results verify the accuracy of the model which provides guidance for the circuit design of SiC MOSFETs. All the parameters of the loss model can be extracted from the datasheet, which is practical in power electronics design.", "doi": null, "authors": [ "Jialin Zheng", "Zhengming Zhao", "Han Xu", "Weicheng Liu", "Yangbin Zeng" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2311.07029v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2311.07029v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331330", "title": "Production, Characterization, Kinetics, and Thermodynamics Analysis of Amyloglucosidase from Fungal Consortium.", "content": "The current study aimed to produce an amyloglucosidase enzyme from the fungal consortium. The best amylolytic fungal consortia were identified as Alternaria alternata and Aspergillus niger through the 18S rDNA technique. Fermentation kinetics and various nutritional and cultural parameters were analyzed. Maximum production was obtained in M4 media, pH 5.5, 30 °C, and 4 mL inoculum at 150 rpm after 72 h of incubation. Along with that, sodium nitrate at 2.5%, maltose, beef extract 1%, zinc sulfate (0.1%), and Tween 80 (0.1%) supported the maximum amyloglucosidase production. Amyloglucosidase was partially purified up to 1.6 purification fold with a specific activity of 1.84 Umg", "journal": "Applied biochemistry and biotechnology", "issn": [ "1559-0291" ], "authors": [ "Imran Ali", "Roheena Abdullah", "Asifa Saleem", "Kinza Nisar", "Afshan Kaleem", "Mehwish Iqtedar", "Irfana Iqbal", "Xiaoming Chen" ], "doi": "10.1007/s12010-024-05067-2", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331330", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2201.03821v1", "title": "Dipole Scattering at the Interface: The Origin of Low Mobility observed in SiC MOSFETs", "publishedDate": "2022-01-11T07:59:48", "content": "In this work, the origin of the low free electron mobility in SiC MOSFETs is investigated using the scattering theory of two-dimensional electron gases. We first establish that neither phonon scattering nor Coulomb scattering can be the cause of the low observed mobility in SiC MOSFETs; we establish this fact by comparing the theoretically calculated mobility considering these effects with experimental observations. By considering the threshold voltages and the effective field dependence of the mobility in SiC MOSFETs, it is concluded that the scattering centers of the dominant mechanism are electrically neutral and exhibit a short-range scattering potential. By considering charge distribution around a neutral defect at the interface, it is established that an electric dipole induced by the defect can act as a short-range scattering potential. We then calculate the mobility in SiC MOSFETs assuming that there exist a high density of dipoles at the interface. The calculated dipole-scattering-limited mobility shows a similar dependence on the effective field dependence to that observed in experimental results. Thus, we conclude that scattering induced by a high density of electric dipoles at the interface is dominant cause of the low mobility in SiC MOSFETs.", "doi": "10.1063/5.0086172", "authors": [ "Tetsuo Hatakeyama", "Hirohisa Hirai", "Mitsuru Simetani", "Dai Okamoto", "Mitsuo Okamoto", "Shinsuke Harada" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "16pages, 3 figures", "pdf_url": "http://arxiv.org/pdf/2201.03821v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2201.03821v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331193", "title": "Exploring the heterogeneity of interstitial cells of Cajal and their properties in gastrointestinal mesenchymal tumors applying single-cell RNA sequencing analysis.", "content": "Gastrointestinal mesenchymal stromal tumors (GISTs) are a group of intramural tumors that exhibit a wide range of morphologies. Dysfunction or loss of interstitial cells of Cajal (ICCs) is correlated with the disorders of gastrointestinal motility. At present, the characterization and molecular mechanisms underlying the role of ICCs in GIST are still not clear.", "journal": "Discover oncology", "issn": [ "2730-6011" ], "authors": [ "Yongjun Zhu", "Rui Zhang", "Shipai Zhang", "Haijun Hu" ], "doi": "10.1007/s12672-024-01372-8", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331193", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.05580v1", "title": "Power Cycling Test Bench for Accelerated Life Testing for Reliability Assessment of SiC-MOSFET in Extreme Offshore Environment", "publishedDate": "2020-01-15T22:21:05", "content": "The reliability of power semiconductor switches is important when considering their vital role in power electronic converters for downhole subsea applications. Respect to technology advancements in material sciences, power MOSFETs with wide band gap materials have been proposed such as silicon carbide (SiC) and gallium nitride (GaN) as an alternative to existing silicon (Si) based MOSFETs and IGBTs. However, reliability analysis should be performed before substituting SiC-MOSFETs in the place of existing Si-MOSFETs and IGBTs. Due to costly equipment of experimental test setup for accelerated life test, a good reliable and precise simulation-based test bench should be used to test the life test procedure before implementing actual hardware. Therefore, this paper introduces a power cycle (PC) test bench for accelerated life testing for reliability assessment of SiC-MOSFET in harsh offshore environment. The introduced test bench is a simulation-based of power switch in SimScape and LTspice and has been validated with datasheet of 1.2 kV SiC-MOSFET, CAS300M12BM2 by CREE. Preliminary hardware circuits are also shown for further experimental tests. The captured data from the Device-Under-Test (DUT) in different ambient temperatures are envisioned and provide critical information about the failure mechanisms and lifetime characteristics of power devices. The provided lifetime characteristics data of SiC-MOSFET can be used to statistically estimate the Remaining-Useful-Lifetime (RUL) of component in a real application such as downhole motor drives.", "doi": null, "authors": [ "Shiva Geraei", "Saeed Hasanpour Aghdam" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": "9 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2001.05580v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.05580v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331189", "title": "Epidemiology, genetic characterization and population structure analysis of lumpy skin disease virus from North India.", "content": "Lumpy skin disease (LSD) is a transboundary, viral disease of cattle with a significant economic impact on the livestock industry. This study describes the epidemiological investigations of outbreaks of LSD that occurred in 2022 in three Indian states viz., Haryana, Himachal Pradesh and Rajasthan and the genetic characterization of Lumpy skin disease viruses (LSDVs). Also, the population structure analysis of LSDVs was carried out. Out of 138 scab samples tested from suspected cattle for LSDV, 106 were found positive. Of these, nine representative scab samples were further genetically characterized. Phylogenetic analysis based on the P32 and EEV gene sequences depicted that the LSDV strains of the present study had nucleotide identity of 100% and 99.10-99.45%, respectively with the LSDV/2019 field strains of India. Multiple sequence alignment of the EEV glycoprotein gene sequences revealed nucleotide polymorphisms at three positions viz., G178A, G253A and A459G in circulating LSDV/2022 field strains. Based on the median joining network analysis of the EEV gene, 12 haplotypes were identified among the LSDV populations. Population structure analysis corresponding to the EEV gene revealed high haplotype (0.8486 ± 0.026) and low nucleotide diversities (0.00636 ± 0.0006) and negative values for neutrality indices, indicating a high number of closely related haplotypes and the studied population may have undergone a recent expansion. The findings will help in understanding the distribution and dynamics of LSDV populations, which will prove pivotal in designing and implementing effective management and control strategies.", "journal": "Tropical animal health and production", "issn": [ "1573-7438" ], "authors": [ "Pallavi Moudgil", "Ramesh Kumar", "Punit Jhandai", "Sameer Kamboj", "Khushbu Bishnoi", "Kushal Grakh", "Renu Gupta", "Rajesh Khurana", "Naresh Jindal" ], "doi": "10.1007/s11250-024-04102-y", "publishedDate": "2024-09-11T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331189", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2404.13463v1", "title": "Time-Gated Optical Spectroscopy of Field-Effect Stimulated Recombination via Interfacial Point Defects in Fully-Processed Silicon Carbide Power MOSFETs", "publishedDate": "2024-04-20T20:42:53", "content": "Fully-processed SiC power metal-oxide-semiconductor field-effect transistors (MOSFETs) emit light during switching of the gate terminal, while both drain and source terminals are grounded. The emitted photons are caused by defect-assisted recombination of electrons and holes at the 4H-SiC/SiO$_2$ interface and can be detected through the SiC substrate. Here, we present time-gated spectroscopic characterization of these interfacial point defects. Unlike in previous studies, the devices were opened in such a way that the drain-contact remained electrically active. A separate examination of the photons emitted at the rising and falling transitions of the gate-source voltage enabled the extraction of two different spectral components. One of these components consists of a single transition with phonon replicas of a local vibrational mode (LVM) with an astonishingly high energy of 220 meV $\\unicode{x2013}$ well above the highest phonon modes in 4H-SiC and SiO$_2$ of 120 meV and 137 meV, respectively. Based on a quantum mechanical model, we successfully fitted its emission spectrum and assigned it to donor-acceptor pair recombination involving a carbon cluster-like defect. Other transitions were assigned to EH$_{6/7}$-assisted, EK$_2$-D, and nitrogen-aluminum donor-acceptor pair recombination. Due to the relevance of these defects in the operation of SiC MOSFETs, these novel insights will contribute to improved reliability and performance of these devices.", "doi": "10.1103/PhysRevApplied.22.024075", "authors": [ "Maximilian W. Feil", "Magdalena Weger", "Hans Reisinger", "Thomas Aichinger", "André Kabakow", "Dominic Waldhör", "Andreas C. Jakowetz", "Sven Prigann", "Gregor Pobegen", "Wolfgang Gustin", "Michael Waltl", "Michel Bockstedte", "Tibor Grasser" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "18 pages, 12 figures", "pdf_url": "http://arxiv.org/pdf/2404.13463v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2404.13463v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331177", "title": "Combining SiO", "content": "Cadmium (Cd) pollution in water and soil seriously threatens human health. Biochar and nanomaterials have high potential for solving the cadmium pollution problem due to their abundant pores and high specific surface area. Here, the preparation of the composite material SiO", "journal": "Environmental geochemistry and health", "issn": [ "1573-2983" ], "authors": [ "Shirui Peng", "Jing Liu", "Guofei Pan", "Yan Qin", "Zhixing Yang", "Xiaomu Yang", "Minghua Gu", "Zhiqiang Zhu", "Yanyan Wei" ], "doi": "10.1007/s10653-024-02243-5", "publishedDate": "2024-09-17T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331177", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2107.10408v1", "title": "Temperature dependence of on-state inter-terminal capacitances (Cgd and Cgs) of SiC MOSFETs and frequency limitations of their measurements", "publishedDate": "2021-07-22T00:35:44", "content": "Inter-terminal capacitances (ITCs) have major influence on the dynamic performance of power SiC MOSFETs. Knowledge of the exact values for the ITCs is required in order to perform accurate and predictive compact model simulations of their dynamic performance. Since commercial SiC MOSFETs are capable of operating in a wide range of temperatures, it is important to know the values of ITCs in the whole temperature range of operation. Direct measurements of the ITCs with standard equipment is possible only at low current levels (i.e. in the off-state (Vgs < Vth) for Vds > 0 V), however their values in the on-state (Vgs>Vth) also influence the MOSFETs switching performance. In this work, ITCs of a planar SiC MOSFET in the on-state are studied by the means of a calibrated TCAD model, revealing substantial temperature dependence in the range of 300-450 K. In the first approximation, this temperature dependence of the ITCs can be explained by a weaker temperature dependence of the MOSFET channel resistance in comparison to its JFET and epitaxial layer resistances. In addition, it is shown that at high frequencies stray inductances of the TO-247-3 package result in a change of the extracted values of the on-state ITCs. This effect is already notable at 1 MHz.", "doi": null, "authors": [ "Alexander Tsibizov", "Roger Stark", "Ulrike Grossner" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "5 pages, 5 figures, accepted to VIRTUAL ISSUE ON SIC 2020 (The 13th\n European Conference on Silicon Carbide and Related Materials (ECSCRM\n 2020-2021))", "pdf_url": "http://arxiv.org/pdf/2107.10408v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2107.10408v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331087", "title": "Effect of bioceramic inclusions on gel-cast aliphatic polymer membranes for bone tissue engineering applications: An in vitro study.", "content": "Polylactic acid (PLA) has been extensively used in tissue engineering. However, poor mechanical properties and low cell affinity have limited its pertinence in load bearing bone tissue regeneration (BTR) devices.", "journal": "Bio-medical materials and engineering", "issn": [ "1878-3619" ], "authors": [ "Vasudev Vivekanand Nayak", "Edmara T P Bergamo", "Vijayavenkataraman Sanjairaj", "Rakesh Kumar Behera", "Nikhil Gupta", "Paulo G Coelho", "Lukasz Witek" ], "doi": "10.3233/BME-240079", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331087", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1711.02832v1", "title": "High-Speed Gate Driver Using GaN HEMTs for 20-MHz Hard Switching of SiC MOSFETs", "publishedDate": "2017-11-08T05:11:17", "content": "In this paper, we investigated a gate driver using a GaN HEMT push-pull configuration for the high-frequency hard switching of a SiC power MOSFET. Low on-resistance and low input capacitance of GaN HEMTs are suitable for a high-frequency gate driver from the logic level, and robustness of SiC MOSFET with high avalanche capability is suitable for a valve transistor in power converters. Our proposed gate driver consists of digital isolators, complementary Si MOSFETs, and GaN HEMTs. The GaN HEMT push-pull stage has a high driving capability owing to its superior switching characteristics, and complementary Si MOSFETs can enhance the control signal from the digital isolator. We investigated limiting factors of the switching frequency of the proposed gate driver by focusing on each circuit component and proposed an improved driving configuration for the gate driver. As a result, 20-MHz hard switching of a SiC MOSFET was achieved using the improved gate driver with GaN HEMTs.", "doi": null, "authors": [ "Takafumi Okuda", "Takashi Hikihara" ], "journal": null, "tags": [ "eess.SP" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1711.02832v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1711.02832v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331013", "title": "Targeted synthesis of gold nanorods and characterization of their tailored surface properties using optical and X-ray spectroscopy.", "content": "In recent years, nanophotonics have had a transformative impact on harnessing energy, directing chemical reactions, and enabling novel molecular dynamics for thermodynamically intensive applications. Plasmonic nanoparticles have emerged as a tool for confining light on nanometer-length scales where regions of intense electromagnetic fields can be precisely tuned for controlled surface chemistry. We demonstrate a precision pH-driven synthesis of gold nanorods with optical resonance properties widely tunable across the near-infrared spectrum. Through controlled electrostatic interactions, we can perform selective adsorbate molecule attachment and monitor the surface transitions through spectroscopic techniques that include ground-state absorption spectrophotometry, two-dimensional X-ray absorption near-edge spectroscopy, Fourier-transform infrared spectroscopy, and surface-enhanced Raman spectroscopy. We elucidate the electronic, structural, and chemical factors that contribute to plasmon-molecule dynamics at the nanoscale with broad implications for the fields of energy, photonics, and bio-inspired materials.", "journal": "Physical chemistry chemical physics : PCCP", "issn": [ "1463-9084" ], "authors": [ "David G Schauer", "Jona Bredehoeft", "Umar Yunusa", "Ajith Pattammattel", "Hans Jakob Wörner", "Emily A Sprague-Klein" ], "doi": "10.1039/d4cp01993h", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331013", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2009.04835v1", "title": "Understanding the role of threading dislocations on 4H-SiC MOSFET breakdown under high temperature reverse bias stress", "publishedDate": "2020-09-10T13:20:41", "content": "The origin of dielectric breakdown was studied on 4H-SiC MOSFETs that failed after three months of high temperature reverse bias (HTRB) stress. A local inspection of the failed devices demonstrated the presence of a threading dislocation (TD) at the breakdown location. The nanoscale origin of the dielectric breakdown was highlighted with advanced high-spatial-resolution scanning probe microscopy (SPM) techniques. In particular, SPM revealed the conductive nature of the TD and a local increase of the minority carrier concentration close to the defect. Numerical simulations estimated a hole concentration 13 orders of magnitude larger than in the ideal 4H-SiC crystal. The hole injection in specific regions of the device explained the failure of the gate oxide under stress. In this way, the key role of the TD in the dielectric breakdown of 4H-SiC MOSFET was unambiguously demonstrated.", "doi": "10.1088/1361-6528/ab5ff6", "authors": [ "P. Fiorenza", "M. Alessandrino", "B. Carbone", "C. Di Martino", "A. Russo", "M. Saggio", "C. Venuto", "E. Zanetti", "F. Giannazzo", "F. Roccaforte" ], "journal": "Nanotechnology 31, (2020) 125203", "tags": [ "physics.app-ph", "cond-mat.mtrl-sci" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2009.04835v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2009.04835v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330976", "title": "Synthesis, Characterization and Antibacterial Activity Evaluation of CuO NPs and B-CuO NPs obtained from Livistona chinensis leaf extract.", "content": "Nanoparticles (NPs) exhibit fascinating size-dependent chemical and physical characteristics that make them useful for a variety of applications. The present paper reports the green synthesis of CuO NPs and B-doped CuO NPs (B-CuO NPs) from Livistona chinensis leaf extract. Not much work has been reported on the use of the plant extract for the fabrication of NPs, particularly those of Cu and its doped counterparts. Various spectroscopic techniques were used to characterize the synthesized NPs. In the FT-IR spectra, peaks obtained at 504 cm-1 to 600 cm-1 were due to Cu-O vibrations. The energy dispersive X-ray analysis (EDX) spectra confirmed the CuO NPs' composition and B's presence inside the NPs. The peak pattern in X-ray diffraction (XRD) spectrum confirmed the crystalline and monoclinic phases of the NPs. The average crystalline size of CuO NPs and B-CuO NPs was 19.56 nm and 17.30 nm respectively. The CuO and B-CuO NPs were tested against three Gram-positive bacterial strains namely Bacillus subtilis, Micrococcus luteus, and Staphylococcus aureus and three Gram-negative Escherichia coli, Salmonella abony, and Pseudomonas aeruginosa through Agar well diffusion method and it was found that CuO NPs showed higher activity than B-CuO NPs.", "journal": "Chemistry & biodiversity", "issn": [ "1612-1880" ], "authors": [ "Ekhlakh Veg", "Azam Raza", "Smita Rai", "Swati Sharma", "Anushka Pandey", "Mohammad Imran Ahmad", "Sabeeha Jabeena", "Seema Joshi", "Tahmeena Khan" ], "doi": "10.1002/cbdv.202401596", "publishedDate": "2024-09-27T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330976", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2310.06184v2", "title": "A Brief Review of Single Event Burnout Failure Mechanisms and Design Tolerances of Silicon Carbide MOSFETs", "publishedDate": "2023-10-09T22:24:06", "content": "Radiation hardening of the MOSFET is of the highest priority for sustaining high-power systems in the space radiation environment. SiC-based power electronics are being looked at as a strong alternative for high power spaceborne power electronic systems. The SiC MOSFET has been shown to be most prone to SEB of the radiation effects. The knowledge of SiC MOSFET device degradation and failure mechanisms are reviewed. Additionally, the viability of rad-tolerant SiC MOSFET designs and the methods of SEB simulation are evaluated. A merit system is proposed to consider the performance of radiation tolerance and nominal electrical performance. Criteria needed for high-fidelity SEB simulation are also reviewed. This paper stands as a necessary analytical review to intercede the development of rad-hard power devices for space and extreme environment applications.", "doi": "10.3390/electronics13081414", "authors": [ "Christopher A. Grome", "Wei Ji" ], "journal": "Electronics 2024, 13, 1414", "tags": [ "physics.ins-det" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2310.06184v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2310.06184v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330972", "title": "Gel-Gel Phase Separation in Clustered Poly(ethylene glycol) Hydrogel with Enhanced Hydrophobicity.", "content": "The development of hydrophobic poly(ethylene glycol) (PEG) hydrogels, which are typically hydrophilic, could significantly enhance their application as artificial extracellular matrices. In this study, we designed PEG hydrogels with enhanced hydrophobicity through gel-gel phase separation (GGPS), a phenomenon that uniquely enhances hydrophobicity under ambient conditions, and we elucidated the pivotal role of elasticity in this process. We hypothesized that increased elasticity would amplify GGPS, thereby improving the hydrophobicity and cell adhesion on PEG hydrogel surfaces, despite their inherent hydrophilicity. To test this hypothesis, we engineered dilute oligo-PEG gels via a two-step process, creating polymer networks from tetra-PEG clusters with multiple reaction points. These oligo-PEG gels exhibited significantly higher elasticity, turbidity, and shrinkage upon water immersion compared to dilute PEG gels. Detailed characterization through confocal laser scanning microscopy, rheological measurements, and cell adhesion assays revealed distinct biphasic structures, increased hydrophobicity, and enhanced cell attachability in the dilute oligo-PEG gels. Our findings confirm that elasticity is crucial for effective GGPS, providing a novel method for tailoring hydrogel properties without chemical modification. This research introduces a new paradigm for designing biomaterials with improved cell-scaffolding capabilities, offering significant potential for tissue engineering and regenerative medicine.", "journal": "ACS macro letters", "issn": [ "2161-1653" ], "authors": [ "Shohei Ishikawa", "Takashi Yasuda", "Yasuhide Iwanaga", "Takamasa Sakai" ], "doi": "10.1021/acsmacrolett.4c00448", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330972", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2210.07417v2", "title": "Ultra-Wide Bandgap Ga$_2$O$_3$-on-SiC MOSFETs", "publishedDate": "2022-10-13T23:45:37", "content": "Ulta-wide bandgap semiconductors based on $\\beta$-Ga$_2$O$_3$ offer the potential to achieve higher power switching performance, efficiency, and lower manufacturing cost than today's wide bandgap power semiconductors. However, the most critical challenge to the commercialization of Ga$_2$O$_3$ electronics is overheating, which impacts the device's performance and reliability. We fabricated a Ga$_2$O$_3$/4H-SiC composite wafer using a fusion-bonding method. A low temperature ($\\le$ 600 $^{\\circ}$C) epitaxy and device processing approach based on low-temperature (LT) metalorganic vapor phase epitaxy is developed to grow a Ga$_2$O$_3$ epitaxial channel layer on the composite wafer and subsequently fabricate into Ga$_2$O$_3$ power MOSFETs. This LT approach is essential to preserve the structural integrity of the composite wafer. These LT-grown epitaxial Ga$_2$O$_3$ MOSFETs deliver high thermal performance (56% reduction in channel temperature), high voltage blocking capabilities up to 2.45 kV, and power figures of merit of $\\sim$ 300 MW/cm$^2$, which is a record high for any heterogeneously integrated Ga$_2$O$_3$ devices reported to date. This work is the first realization of multi-kilovolt homoepitaxial Ga$_2$O$_3$ power MOSFETs fabricated on a composite substrate with high heat transfer performance which delivers state-of-the-art power density values while running much cooler than those on native substrates. Thermal characterization and modeling results reveal that a Ga$_2$O$_3$/diamond composite wafer with a reduced Ga$_2$O$_3$ thickness ($\\sim$ 1 $\\mu$m) and thinner bonding interlayer ($<$ 10 nm) can reduce the device thermal impedance to a level lower than today's GaN-on-SiC power switches.", "doi": null, "authors": [ "Yiwen Song", "Arkka Bhattacharyya", "Anwarul Karim", "Daniel Shoemaker", "Hsien-Lien Huang", "Saurav Roy", "Craig McGray", "Jacob H. Leach", "Jinwoo Hwang", "Sriram Krishnamoorthy", "Sukwon Choi" ], "journal": null, "tags": [ "cond-mat.mtrl-sci", "physics.app-ph" ], "comments": "17 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2210.07417v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2210.07417v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/6xur", "title": "RNA dodecamer with a 6-hydrazino-2-aminopurine modified base", "content": "Thioguanosine Conversion Enables mRNA-Lifetime Evaluation by RNA Sequencing Using Double Metabolic Labeling (TUC-seq DUAL). - Ennifar E, Micura R, Gasser C, Brillet K Angew Chem Int Ed Engl (59) 6881-6886 (2020)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/6xur_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/6xur", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/6xus", "title": "RNA dodecamer with a 6-hydrazino-2-aminopurine modified base", "content": "Thioguanosine Conversion Enables mRNA-Lifetime Evaluation by RNA Sequencing Using Double Metabolic Labeling (TUC-seq DUAL). - Ennifar E, Micura R, Gasser C, Brillet K Angew Chem Int Ed Engl (59) 6881-6886 (2020)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/6xus_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/6xus", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2203.04701v1", "title": "Millisecond Time-Scale Measurements of Heat Transfer to Confined He II", "publishedDate": "2022-03-09T13:24:28", "content": "We explore transient heat transfer, on the millisecond time-scale, from a narrow, rectangular stainless steel heater cooled from one side by He II confined to a channel of 120 $\\mu$m depth. The helium is isolated from the external bath with the exception of two pin-holes of cross section about 10% that of the channel. We measure the temperatures of both the heater strip and the channel helium during slow-pulse heating that reaches peak power after 9 ms, fast-pulse heating that reaches peak power after 100 $\\mu$s, and step heating that reaches steady power after 100 $\\mu$s. Using the steady state Kapitza heat transfer expression at the interface between heater and helium, and the Gorter-Mellink heat transfer regime in the helium channel, we obtain excellent agreement between simulation and measurement during the first 5 ms of slow-pulse tests. Using instead the measured helium temperature in the Kapitza expression, we obtain excellent agreement between the simulated and measured heater response during the first 150 ms of slow-pulse tests. The same model fails to explain the fast-pulse transient response of the heater and helium, while it can explain the helium response to a step in applied power but not the heater response. The steady state Kapitza expression may therefore not be applicable to heating events that are over within a single millisecond.", "doi": null, "authors": [ "Jonas Blomberg Ghini", "Bernhard Auchmann", "Bertrand Baudouy" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2203.04701v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2203.04701v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331138", "title": "The plant early recombinosome: a high security complex to break DNA during meiosis.", "content": "The formacion of numerous unpredictable DNA Double Strand Breaks (DSBs) on chromosomes iniciates meiotic recombination. In this perspective, we propose a 'multi-key lock' model to secure the risky but necesary breaks as well as a 'one per pair of cromatids' model for the topoisomerase-like early recombinosome. During meiosis, homologous chromosomes recombine at few sites of crossing-overs (COs) to ensure correct segregation. The initiation of meiotic recombination involves the formation of DNA double strand breaks (DSBs) during prophase I. Too many DSBs are dangerous for genome integrity: if these DSBs are not properly repaired, it could potentially lead to chromosomal fragmentation. Too few DSBs are also problematic: if the obligate CO cannot form between bivalents, catastrophic unequal segregation of univalents lead to the formation of sterile aneuploid spores. Research on the regulation of the formation of these necessary but risky DSBs has recently advanced in yeast, mammals and plants. DNA DSBs are created by the enzymatic activity of the early recombinosome, a topoisomerase-like complex containing SPO11. This opinion paper reviews recent insights on the regulation of the SPO11 cofactors necessary for the introduction of temporally and spatially controlled DSBs. We propose that a 'multi-key-lock' model for each subunit of the early recombinosome complex is required to secure the formation of DSBs. We also discuss the hypothetical implications that the established topoisomerase-like nature of the SPO11 core-complex can have in creating DSB in only one of the two replicated chromatids of early prophase I meiotic chromosomes. This hypothetical 'one per pair of chromatids' DSB formation model could optimize the faithful repair of the self-inflicted DSBs. Each DSB could use three potential intact homologous DNA sequences as repair template: one from the sister chromatid and the two others from the homologous chromosomes.", "journal": "Plant reproduction", "issn": [ "2194-7961" ], "authors": [ "Nahid Rafiei", "Arnaud Ronceret" ], "doi": "10.1007/s00497-024-00509-7", "publishedDate": "2024-08-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331138", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2406.08701v1", "title": "Impacts of Backside Insulation on the Dynamic On-Resistance of Lateral p-GaN HEMTs-on-Si", "publishedDate": "2024-06-12T23:58:41", "content": "We examined the effect of backside insulation on the dynamic on-resistance of lateral p-GaN HEMTs. To gain a comprehensive understanding of the dynamic onresistance difference between substrate grounded and substrate floating p-GaN HEMTs, we conducted in-circuit double pulse testing and long-term direct current (DC) bias stress. We have realized that while backside insulation can enhance the breakdown voltage of lateral p-GaN HEMTs, it also comes with a tradeoff in device reliability. Results through Sentaurus TCAD simulation suggest that the use of backside insulation in devices gradually disperses potential to the buffer barrier. As a result, the potential barrier at the buffer edge of the 2DEG channel decreases significantly, leading to considerable electron trappings at buffer traps. This breakdown voltage and reliability tradeoff also applies to HEMT technologies using insulating substrates.", "doi": null, "authors": [ "Yu-Xuan Wang", "Mao-Chou Tai", "Ting-Chang Chang", "Wei-Chen Huang", "Zeyu Wan", "Simon Li", "Simon Sze", "Guangrui Xia" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2406.08701v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2406.08701v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331082", "title": "Full-Incision Double-Eyelid Blepharoplasty with Selective Sensory Nerve Preservation.", "content": "Full-incision double-eyelid blepharoplasty can result in upper eyelid skin numbness postoperatively. However, few studies have examined sensory loss after eyelid surgery. We propose a novel surgical approach with selective sensory nerve preservation to prevent postoperative upper eyelid numbness.", "journal": "Aesthetic plastic surgery", "issn": [ "1432-5241" ], "authors": [ "Jing Liu", "Jinlong Huang", "Jia Liu", "Xiaodong Chen", "Gang Chen", "Jinming Wang" ], "doi": "10.1007/s00266-024-04371-w", "publishedDate": "2024-09-03T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331082", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2003.00220v1", "title": "Effective Localization Using Double Ideal Quotient and Its Implementation", "publishedDate": "2020-02-29T09:40:12", "content": "In this paper, we propose a new method for localization of polynomial ideal, which we call \"Local Primary Algorithm\". For an ideal $I$ and a prime ideal $P$, our method computes a $P$-primary component of $I$ after checking if $P$ is associated with $I$ by using \"double ideal quotient\" $(I:(I:P))$ and its variants which give us a lot of information about localization of $I$.", "doi": "10.1007/978-3-319-99639-4_19", "authors": [ "Yuki Ishihara", "Kazuhiro Yokoyama" ], "journal": "Proc. CASC 2018, LNCS 11077, pp.272-287, Springer 2018", "tags": [ "math.AC", "cs.SC" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2003.00220v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2003.00220v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331081", "title": "A Multicenter, Randomized, Double-Blind, Parallel-Grouped, Positive-Controlled, Non-Inferiority Clinical Study to Evaluate the Efficacy and Safety of Injectable Calcium Hydroxylapatite Microsphere Hydrogel Fillers in the Correction of Nasolabial Fold in Chinese Subjects.", "content": "Soft tissue fillers are used to improve the appearance of nasolabial folds (NLFs). This study aimed to compare the efficacy and safety of a new calcium hydroxylapatite microsphere hydrogel filler (Aphranel) versus Restylane for correcting NLFs.", "journal": "Aesthetic plastic surgery", "issn": [ "1432-5241" ], "authors": [ "Yuyan Pan", "Zucheng Luo", "Shuwei Chen", "Nanhang Lu", "Yong Zhang", "Yanwen Yang", "Cheng Chen", "Jiaqi Liu", "Rufan Zhang", "Yining Ge", "Fazhi Qi", "Ming Zhu" ], "doi": "10.1007/s00266-024-04378-3", "publishedDate": "2024-09-03T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331081", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.00799v1", "title": "Practical Phase Retrieval Using Double Deep Image Priors", "publishedDate": "2022-11-02T00:37:51", "content": "Phase retrieval (PR) concerns the recovery of complex phases from complex magnitudes. We identify the connection between the difficulty level and the number and variety of symmetries in PR problems. We focus on the most difficult far-field PR (FFPR), and propose a novel method using double deep image priors. In realistic evaluation, our method outperforms all competing methods by large margins. As a single-instance method, our method requires no training data and minimal hyperparameter tuning, and hence enjoys good practicality.", "doi": null, "authors": [ "Zhong Zhuang", "David Yang", "Felix Hofmann", "David Barmherzig", "Ju Sun" ], "journal": null, "tags": [ "cs.CV", "cs.LG", "eess.IV" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.00799v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.00799v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331059", "title": "Advanced Hybrid Closed-Loop Therapy Compared With Standard Insulin Therapy Intrapartum and Early Postpartum in Women With Type 1 Diabetes: A Secondary Observational Analysis From the CRISTAL Randomized Controlled Trial.", "content": "To determine efficacy and safety of intrapartum and early postpartum advanced hybrid closed-loop (AHCL) therapy compared with standard insulin therapy in pregnant women with type 1 diabetes (T1D).", "journal": "Diabetes care", "issn": [ "1935-5548" ], "authors": [ "Kaat Beunen", "Pieter Gillard", "Nancy Van Wilder", "Dominique Ballaux", "Gerd Vanhaverbeke", "Youri Taes", "Xavier-Philippe Aers", "Frank Nobels", "Liesbeth Van Huffel", "Joke Marlier", "Dahae Lee", "Joke Cuypers", "Vanessa Preumont", "Sarah E Siegelaar", "Rebecca C Painter", "Annouschka Laenen", "Chantal Mathieu", "Katrien Benhalima" ], "doi": "10.2337/dc24-1320", "publishedDate": "2024-08-23T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331059", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1901.09753v1", "title": "On maximum of Gaussian process with unique maximum point of its variance", "publishedDate": "2019-01-28T15:54:44", "content": "Gaussian random processes which variances reach theirs maximum values at unique points are considered. Exact asymptotic behaviors of probabilities of large absolute maximums of theirs trajectories have been evaluated using Double Sum Method under the widest possible conditions.", "doi": null, "authors": [ "E. Hashorva", "S. Kobelkov", "V. I. Piterbarg" ], "journal": null, "tags": [ "math.PR" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1901.09753v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1901.09753v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331032", "title": "Methylphenidate reduces spatial attentional bias by modulating fronto-striatal connectivity.", "content": "Spatial attention bias reflects tendency to direct attention to specific side in space. This bias reflects asymmetric dopamine (DA) signaling in the striatum. Administration of DA agonists reduces spatial bias, yet the underlying mechanism is not yet clear. To address this, the current study tested whether methylphenidate (MPH; an indirect DA agonist) reduces orienting bias by modulating fronto-striatal connectivity. 54 adults with consistent bias completed the greyscales task which detects subtle biases during fMRI scanning under MPH (20 mg) or placebo, in a double-blind design. As hypothesized, MPH reduced bias by increasing orienting towards non-preferred hemispace, regardless of whether the initial bias was left or right. MPH-induced increases were found in activation of the medial superior frontal gyrus (mSFG: F[1;53] = 4.632, cluster-defining threshold of P < 0.05, minimal cluster size = 0, p_FWE = 0.036, η2 = 0.08) and its functional connectivity with the caudate (left caudate: F[1;53] = 12.664, p_FWE = 0.001, η2 = 0.192; right caudate: F[1;53] = 11.069, p_FWE = 0.002, η2 = 0.172), when orienting towards the non-preferred hemispace. MPH also reduced mSFG activation and fronto-striatal connectivity for the preferred hemispace. Results suggest modulation of frontal excitability due to increased caudate-mSFG functional connectivity. This mechanism may underlie the positive effect of dopaminergic agonists on abnormal patterns of directing attention in space.", "journal": "Cerebral cortex (New York, N.Y. : 1991)", "issn": [ "1460-2199" ], "authors": [ "Leehe Peled-Avron", "Maryana Daood", "Rachel Ben-Hayun", "Michael Nevat", "Judith Aharon-Peretz", "Roee Admon", "Rachel Tomer" ], "doi": "10.1093/cercor/bhae379", "publishedDate": "2024-09-03T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331032", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1904.05563v1", "title": "On maximum of Gaussian random field having unique maximum point of its variance", "publishedDate": "2019-04-11T07:20:37", "content": "Gaussian random fields on Euclidean spaces whose variances reach their maximum values at unique points are considered. Exact asymptotic behaviors of probabilities of large absolute maximum of theirs trajectories have been evaluated using Double Sum Method under the widest possible conditions.", "doi": null, "authors": [ "Sergey G. Kobelkov", "Vladimir I. Piterbarg" ], "journal": null, "tags": [ "math.PR" ], "comments": "19 pages", "pdf_url": "http://arxiv.org/pdf/1904.05563v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1904.05563v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330850", "title": "Use of Botulinum Toxin in Upper-Limb Tremor: Systematic Review and Perspectives.", "content": "Tremor is the most common movement disorder, with significant functional and psychosocial consequences. Oral medications have been disappointing or limited by side effects. Surgical techniques are effective but associated with risks and adverse events. Botulinum toxin (BT) represents a promising avenue but there is still no double-blind evidence of efficacy on upper limb function. A systematic review on the effects of BT in upper-limb tremor was conducted.", "journal": "Toxins", "issn": [ "2072-6651" ], "authors": [ "Damien Motavasseli", "Cécile Delorme", "Nicolas Bayle", "Jean-Michel Gracies", "Emmanuel Roze", "Marjolaine Baude" ], "doi": "10.3390/toxins16090392", "publishedDate": "2024-09-07T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330850", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1910.01465v2", "title": "Reducing Overestimation Bias in Multi-Agent Domains Using Double Centralized Critics", "publishedDate": "2019-10-03T13:40:46", "content": "Many real world tasks require multiple agents to work together. Multi-agent reinforcement learning (RL) methods have been proposed in recent years to solve these tasks, but current methods often fail to efficiently learn policies. We thus investigate the presence of a common weakness in single-agent RL, namely value function overestimation bias, in the multi-agent setting. Based on our findings, we propose an approach that reduces this bias by using double centralized critics. We evaluate it on six mixed cooperative-competitive tasks, showing a significant advantage over current methods. Finally, we investigate the application of multi-agent methods to high-dimensional robotic tasks and show that our approach can be used to learn decentralized policies in this domain.", "doi": null, "authors": [ "Johannes Ackermann", "Volker Gabler", "Takayuki Osa", "Masashi Sugiyama" ], "journal": null, "tags": [ "cs.LG", "cs.AI", "cs.MA", "stat.ML" ], "comments": "Accepted for the Deep RL Workshop at NeurIPS 2019; Changes for v2:\n Changed Figures 3,4, due to an error in the implementation of MATD3. Please\n refer to this version for fair evaluation", "pdf_url": "http://arxiv.org/pdf/1910.01465v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1910.01465v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330689", "title": "Recent Progress on Stability of Layered Double Hydroxide-Based Catalysts for Oxygen Evolution Reaction.", "content": "Water electrolysis is regarded as one of the most viable technologies for the generation of green hydrogen. Nevertheless, the anodic oxygen evolution reaction (OER) constitutes a substantial obstacle to the large-scale deployment of this technology, due to the considerable overpotential resulting from the retardation kinetics associated with the OER. The development of low-cost, high-activity, and long-lasting OER catalysts has emerged as a pivotal research area. Layered double hydroxides (LDHs) have garnered significant attention due to their suitability for use with base metals, which are cost-effective and exhibit enhanced activity. However, the current performance of LDHs OER catalysts is still far from meeting the demands of industrial applications, particularly in terms of their long-term stability. In this review, we provide an overview of the causes for the deactivation of LDHs OER catalysts and present an analysis of the various mechanisms employed to improve the stability of these catalysts, including the synthesis of LDH ultrathin nanosheets, adjustment of components and doping, dissolution and redeposition, defect creation and corrosion, and utilization of advanced carbon materials.", "journal": "Nanomaterials (Basel, Switzerland)", "issn": [ "2079-4991" ], "authors": [ "Lielie He", "Yangen Zhou", "Mengran Wang", "Simin Li", "Yanqing Lai" ], "doi": "10.3390/nano14181533", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330689", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2008.11928v3", "title": "Quantum illumination receiver using double homodyne detection", "publishedDate": "2020-08-27T06:15:00", "content": "A quantum receiver is an essential element of quantum illumination (QI) which outperforms its classical counterpart, called classical-illumination (CI). However, there are only few proposals for realizable quantum receiver, which exploits nonlinear effects leading to increasing the complexity of receiver setups. To compensate this, in this article, we design a quantum receiver with linear optical elements for Gaussian QI. Rather than exploiting nonlinear effect, our receiver consists of a 50:50 beam splitter and homodyne detection. Using double homodyne detection after the 50:50 beam splitter, we analyze the performance of the QI in different regimes of target reflectivity, source power, and noise level. We show that our receiver has better signal-to-noise ratio and more robust against noise than the existing simple-structured receivers.", "doi": "10.1103/PhysRevResearch.3.013006", "authors": [ "Yonggi Jo", "Sangkyung Lee", "Yong Sup Ihn", "Zaeill Kim", "Su-Yong Lee" ], "journal": "Phys. Rev. Research 3, 013006 (2021)", "tags": [ "quant-ph" ], "comments": "9 pages, 6 figures", "pdf_url": "http://arxiv.org/pdf/2008.11928v3", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2008.11928v3", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330634", "title": "Simultaneously Enhancing the Efficiency and Stability of Perovskite Solar Cells by Using P3HT/PEDOT:PSS as a Double Hole Transport Layer.", "content": "The stability issue of perovskite solar cells (PSCs) has long been of concern to researchers. Poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) is commonly used as a hole transport layer (HTL) in the inverted PSCs to achieve efficient and stable performance. However, PEDOT:PSS can corrode ITO, affecting device efficiency. Moreover, the hydrophilic nature of PEDOT:PSS compromises device stability. In this work, Poly (3-hexylthiophene-2,5-diyl) (P3HT), known for its good hydrophobicity, was used to modify the surface of PEDOT:PSS, reducing its water absorption and thereby enhancing the efficiency and stability of PSCs. The results reveal that incorporating P3HT effectively enhances the hydrophobicity of PEDOT:PSS. Furthermore, it fosters the development of large-grain perovskite film on the PEDOT:PSS/P3HT bilayer. This enhancement leads to a power conversion efficiency (PCE) of 19.78% for PSCs, with an increase by 16% than that of reference cells (17.04% of PCE). Following a duration of 1000 h, the PCE for the device modified with P3HT remains above 90%, while the PCE of the reference device is below 70%. These findings suggest that using P3HT in conjunction with PEDOT:PSS as a bilayer HTL can concurrently and proficiently improve the efficiency and stability of PSCs.", "journal": "Nanomaterials (Basel, Switzerland)", "issn": [ "2079-4991" ], "authors": [ "Xiude Yang", "Minghao Luo", "Qianqian Zhang", "Haishen Huang", "Yanqing Yao", "Yuanlin Yang", "Ying Li", "Wan Cheng", "Ping Li" ], "doi": "10.3390/nano14181476", "publishedDate": "2024-09-06T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330634", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2010.13346v1", "title": "Energy and Service-priority aware Trajectory Design for UAV-BSs using Double Q-Learning", "publishedDate": "2020-10-26T05:21:30", "content": "Next-generation mobile networks have proposed the integration of Unmanned Aerial Vehicles (UAVs) as aerial base stations (UAV-BS) to serve ground nodes. Despite having advantages of using UAV-BSs, their dependence on the on-board, limited-capacity battery hinders their service continuity. Shorter trajectories can save flying energy, however, UAV-BSs must also serve nodes based on their service priority since nodes' service requirements are not always the same. In this paper, we present an energy-efficient trajectory optimization for a UAV assisted IoT system in which the UAV-BS considers the IoT nodes' service priorities in making its movement decisions. We solve the trajectory optimization problem using Double Q-Learning algorithm. Simulation results reveal that the Q-Learning based optimized trajectory outperforms a benchmark algorithm, namely Greedily-served algorithm, in terms of reducing the average energy consumption of the UAV-BS as well as the service delay for high priority nodes.", "doi": null, "authors": [ "Sayed Amir Hoseini", "Ayub Bokani", "Jahan Hassan", "Shavbo Salehi", "Salil S. Kanhere" ], "journal": null, "tags": [ "cs.NI", "cs.AI" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2010.13346v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2010.13346v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330545", "title": "The dual-functional role of carboxylate in a nickel-iron catalyst towards efficient oxygen evolution.", "content": "The efficiency of the oxygen evolution reaction (OER) is severely limited by the sluggish proton-coupled electron transfer processes and inadequate long-term stability. Herein, we introduce a carboxylate group (TPA) to modify NiFe layered double hydroxide (NiFe LDH@TPA), resulting in notable improvements in both activity and stability. A combination of spectroscopic and theoretical investigations reveals the dual-functional role of incorporated TPA. It facilitates the deprotonation of OER intermediates while strengthening the Fe-O bond and acting as a molecular fence, ensuring superior OER kinetics and anti-dissolution properties. NiFe LDH@TPA delivers a low overpotential of 200 mV at 10 mA cm", "journal": "Nanoscale", "issn": [ "2040-3372" ], "authors": [ "Dan Wu", "Yuanhua Sun", "Xue Zhang", "Xiaokang Liu", "Linlin Cao", "Tao Yao" ], "doi": "10.1039/d4nr03689a", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330545", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2101.06452v1", "title": "Hyperfine measurement of $6\\text{P}_{1/2}$ state in $^{87}\\text{Rb}$ using double resonance on blue and IR transition", "publishedDate": "2021-01-16T14:58:15", "content": "In this paper, we present the spectroscopy of 6P$_{1/2}$ state in $^{87}$Rb using double resonance technique at $780~\\text{nm}$ and $421~\\text{nm}$. The double resonance technique is implemented using electromagnetically induced transparency (EIT) and optical pumping methods. Using these spectroscopy methods, we have measured the hyperfine splitting of 6P$_{1/2}$ state with precision of $<$400~kHz which agrees well with other spectroscopy methods such as electrical discharge and saturated absorption spectroscopy at $421~\\text{nm}$.", "doi": "10.1088/1361-6455/ab7670", "authors": [ "Elijah Ogaro Nyakang'o", "Dangka Shylla", "Vasant Natarajan", "Kanhaiya Pandey" ], "journal": "J. Phys. B: At. Mol. Opt. Phys. 53 (2020) 095001", "tags": [ "physics.atom-ph" ], "comments": "6 pages, 5 figures", "pdf_url": "http://arxiv.org/pdf/2101.06452v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2101.06452v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7bna", "title": "ANISOTROPIC THERMAL-PARAMETER REFINEMENT OF THE DNA DODECAMER CGCGAATTCGCG BY THE SEGMENTED RIGID-BODY METHOD", "content": "Anisotropic Thermal-Parameter Refinement of the DNA Dodecamer CGCGAATTCGCG by the Segmented Rigid-Body Method - Holbrook SR, Dickerson RE, Kim S-H Acta Crystallogr., B (41) 255-262 (1985)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7bna_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7bna", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7wkj", "title": "A COVID-19 T-cell response detection method based on a newly identified human CD8+ T cell epitope from SARS-CoV-2-Hubei Province, 2021.", "content": "A COVID-19 T-Cell Response Detection Method Based on a Newly Identified Human CD8+ T Cell Epitope from SARS-CoV-2 - Hubei Province, China, 2021. - Zhang J, Lu D, Li M, Liu MS, Yao SJ, Zhan JB, Liu J, Gao GF China CDC Wkly (4) 83-87 (2022)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7wkj_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7wkj", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2mor", "title": "A tensor-free method for the structural and dynamical refinement of proteins using residual dipolar couplings", "content": "A tensor-free method for the structural and dynamical refinement of proteins using residual dipolar couplings. - Camilloni C, Vendruscolo M J Phys Chem B (119) 653-61 (2015)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2mor_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2mor", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2nr2", "title": "The MUMO (minimal under-restraining minimal over-restraining) method for the determination of native states ensembles of proteins", "content": "The MUMO (minimal under-restraining minimal over-restraining) method for the determination of native state ensembles of proteins. - Richter B, Gsponer J, Varnai P, Salvatella X, Vendruscolo M J Biomol NMR (37) 117-35 (2007)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2nr2_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2nr2", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h56", "title": "Crystal structure of endothiapepsin PF_cryo3 in complex with AC39729 at 100 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h56_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h56", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h5w", "title": "Crystal structure of endothiapepsin PF_RT2 in complex with JFD03909 at 296 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h5w_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h5w", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h58", "title": "Crystal structure of endothiapepsin PF_RT2 in complex with AC39729 at 296 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h58_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h58", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h5u", "title": "Crystal structure of endothiapepsin PF_cryo3 in complex with JFD03909 at 100 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h5u_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h5u", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331462", "title": "Ablation of Supraventricular Arrhythmias With as Low as Reasonably Achievable X-Ray exposure (AALARA): Results of Prospective, Observational, Multicenter, Multinational, Open-Label Registry Study on Real World Data Using Routine Ensite 3D Mapping During SVT Ablation.", "content": "The reduction of fluoroscopic exposure during catheter ablation of supraventricular arrhythmias is widely adopted by experienced electrophysiology physicians with a relatively short learning curve and is becoming the standard of care in many parts of the world. While observational studies in the United States and some parts of Western Europe have evaluated the minimal fluoroscopic approach, there are scarce real-world data for this technique and the generalizability of outcomes in other economic regions.", "journal": "Pacing and clinical electrophysiology : PACE", "issn": [ "1540-8159" ], "authors": [ "Mohammad Amin", "Ayan Abdrakhmanov", "Evgeniy Kropotkin", "Vasil Traykov", "Zoltán Salló", "László Gellér", "Faizel Lorgat", "Oleg Sapelnikov", "Ondrej Toman", "Khalid Al-Muti", "Mohamed Aljaabari", "Adrian Bystriansky", "László Környei", "Nebojša Mujović", "Stefanie Simons", "Nándor Szegedi" ], "doi": "10.1111/pace.15075", "publishedDate": "2024-09-04T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331462", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2203.04701v1", "title": "Millisecond Time-Scale Measurements of Heat Transfer to Confined He II", "publishedDate": "2022-03-09T13:24:28", "content": "We explore transient heat transfer, on the millisecond time-scale, from a narrow, rectangular stainless steel heater cooled from one side by He II confined to a channel of 120 $\\mu$m depth. The helium is isolated from the external bath with the exception of two pin-holes of cross section about 10% that of the channel. We measure the temperatures of both the heater strip and the channel helium during slow-pulse heating that reaches peak power after 9 ms, fast-pulse heating that reaches peak power after 100 $\\mu$s, and step heating that reaches steady power after 100 $\\mu$s. Using the steady state Kapitza heat transfer expression at the interface between heater and helium, and the Gorter-Mellink heat transfer regime in the helium channel, we obtain excellent agreement between simulation and measurement during the first 5 ms of slow-pulse tests. Using instead the measured helium temperature in the Kapitza expression, we obtain excellent agreement between the simulated and measured heater response during the first 150 ms of slow-pulse tests. The same model fails to explain the fast-pulse transient response of the heater and helium, while it can explain the helium response to a step in applied power but not the heater response. The steady state Kapitza expression may therefore not be applicable to heating events that are over within a single millisecond.", "doi": null, "authors": [ "Jonas Blomberg Ghini", "Bernhard Auchmann", "Bertrand Baudouy" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2203.04701v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2203.04701v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331444", "title": "Silicone sling surgery for congenital ptosis: Tarsal tunnel technique.", "content": "This was a prospective, interventional, comparative study conducted on patients with congenital simple severe ptosis. A novel method of silicone rod fixation to the tarsus (tarsal tunnel technique, group 1) was done compared with a conventional technique of silicone rod fixation (suture fixation technique, group 2) in frontalis suspension surgery. A total of 30 patients were randomized into two groups of 15 patients each. Postoperatively, MRD1, vertical palpebral aperture, and eyelid fold height were comparable in both groups till the last follow-up with stability in eyelid position. Patient satisfaction scores showed similar results with good-fair satisfaction grading in 13 patients in group 1 and 11 patients in group 2 at 6 months follow-up. No significant complications occurred in either group. Tarsal tunnel fixation of silicone rods is a novel method in sling surgery with optimal cosmetic and function outcomes. Further long-term studies are needed to validate the results of the technique.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Neelam Pushker", "Manish Mahabir", "Sahil Agrawal", "Mandeep Singh Bajaj" ], "doi": "10.4103/IJO.IJO_2766_23", "publishedDate": "2024-03-10T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331444", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2406.08701v1", "title": "Impacts of Backside Insulation on the Dynamic On-Resistance of Lateral p-GaN HEMTs-on-Si", "publishedDate": "2024-06-12T23:58:41", "content": "We examined the effect of backside insulation on the dynamic on-resistance of lateral p-GaN HEMTs. To gain a comprehensive understanding of the dynamic onresistance difference between substrate grounded and substrate floating p-GaN HEMTs, we conducted in-circuit double pulse testing and long-term direct current (DC) bias stress. We have realized that while backside insulation can enhance the breakdown voltage of lateral p-GaN HEMTs, it also comes with a tradeoff in device reliability. Results through Sentaurus TCAD simulation suggest that the use of backside insulation in devices gradually disperses potential to the buffer barrier. As a result, the potential barrier at the buffer edge of the 2DEG channel decreases significantly, leading to considerable electron trappings at buffer traps. This breakdown voltage and reliability tradeoff also applies to HEMT technologies using insulating substrates.", "doi": null, "authors": [ "Yu-Xuan Wang", "Mao-Chou Tai", "Ting-Chang Chang", "Wei-Chen Huang", "Zeyu Wan", "Simon Li", "Simon Sze", "Guangrui Xia" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2406.08701v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2406.08701v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331443", "title": "Evaluation of antioxidant status of lens epithelial cells in cataract patients.", "content": "The main factor that causes cataracts is the increased oxidative stress and imbalance of an antioxidant defense mechanism, which leads to significant changes in the lens microarchitecture. Senile cataract is the most common type of acquired cataracts due to aging.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Kranti Santosh Sorte Gawali", "Avinash Namdeo Jadhao", "Trupti Diwan Ramteke", "Neelam Jayant Patil", "Harshal Sahare" ], "doi": "10.4103/IJO.IJO_19_24", "publishedDate": "2024-04-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331443", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1903.01806v1", "title": "Preconditioning Kaczmarz method by sketching", "publishedDate": "2019-03-05T13:11:08", "content": "We propose a new method for preconditioning Kaczmarz method by sketching. Kaczmarz method is a stochastic method for solving overdetermined linear systems based on a sampling of matrix rows. The standard approach to speed up convergence of iterative methods is using preconditioner. As we show the best possible preconditioner for this method can be constructed from QR decomposition of the system matrix, but the complexity of this procedure is too high. Therefore, to reduce this complexity, we use random sketching and compare it with the Kaczmarz method without preconditioning. The developed method is applicable for different modifications of classical Kaczmarz method that were proposed recently. We provide numerical experiments to show the performance of the developed methods on solving both random and real overdetermined linear systems.", "doi": null, "authors": [ "Alexandr Katrutsa", "Ivan Oseledets" ], "journal": null, "tags": [ "cs.NA" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1903.01806v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1903.01806v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331437", "title": "Analysis of anthropometric measurements taken from the periocular region in healthy young individuals with different somatotypes.", "content": "Anthropometric parameters related with the periocular region (PR) have gained great importance with the optical technology used in the treatment of eye defects. They have also become important parameters that determine the limits of treatment in aesthetic surgery procedures in PR and the treatment of orbital diseases. The aim of this study was to examine the relationship of PR measurements with somatotype.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Sıdıka Karaketir", "Demet Şencan", "Serdar Çolakoğlu", "Deniz Şenol" ], "doi": "10.4103/IJO.IJO_2836_23", "publishedDate": "2024-02-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331437", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.02194v2", "title": "Strong Convergence Theorems by Generalized CQ Method in Hilbert Spaces", "publishedDate": "2020-01-07T17:44:45", "content": "Recently, CQ method has been investigated extensively. However, it is mainly applied to modify Mann, Ishikawa and Halpern iterations to get strong convergence. In this paper, we study the properties of CQ method and proposed a framework. Based on that, we obtain a series of strong convergence theorems. Some of them are the extensions of previous results. On the other hand, CQ method, monotone Q method, monotone C method and monotone CQ method, used to be given separately, have the following relations: CQ method TRUE $\\Rightarrow$ monotone Q method TRUE $\\Rightarrow$ monotone C method TRUE $\\Leftrightarrow$ monotone CQ method TRUE.", "doi": null, "authors": [ "Songnian He", "Tian Shi" ], "journal": "Fixed Point Theory, 12(2011), No. 2, 355-382", "tags": [ "math.FA" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2001.02194v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.02194v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1710.05223v1", "title": "DPG* Method", "publishedDate": "2017-10-14T19:18:08", "content": "We introduce a cousin of the DPG method - the DPG* method - discuss their relationship and compare the two methods through numerical experiments.", "doi": null, "authors": [ "Brendan Keith", "Leszek Demkowicz", "Jay Gopalakrishnan" ], "journal": null, "tags": [ "math.NA", "math.FA" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1710.05223v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1710.05223v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331418", "title": "Hydrophobic ZIF-8 nanoparticles loaded on chitosan for improved methanol adsorption from fermented wine.", "content": "Metal-organic frameworks (MOFs) have great potential for the adsorption of minor molecular alcohols in the vapor phase. However, the drawbacks of powdered MOFs, including low recyclability and problematic separation, limit their application in fermented wine. Chitosan (CS) is a low-cost, eco-friendly, moldable matrix used in the food industry. In this study, a novel CS@ZIF-8 adsorbent with excellent microporous surface area was successfully synthesized by incorporating hydrophobic ZIF-8 into CS. The results showed that CS@ZIF-8 beads had a high adsorption affinity for methanol at a Zn", "journal": "Journal of food science", "issn": [ "1750-3841" ], "authors": [ "Mibin Lin", "Jia Sha", "Zhonghao Zhu", "Penghui Ye", "Kai Zhao", "Kaijun Xiao" ], "doi": "10.1111/1750-3841.17397", "publishedDate": "2024-08-31T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331418", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1908.08386v1", "title": "Hybrid LBM-FVM and LBM-MCM Methods for Fluid Flow and Heat Transfer Simulation", "publishedDate": "2019-08-18T14:51:45", "content": "The fluid flow and heat transfer problems encountered in industry applications span into different scales and there are different numerical methods for different scales problems. It is not possible to use single scale method to solve problems involving multiple scales. Multiscale methods are needed to solve problems involving multiple scales. In this chapter, meso-macro-multiscale methods are developed by combining various single scale numerical methods, including lattice Boltzmann method (LBM), finite volume method (FVM) and Monte Carlo method (MCM). Macroscale methods include FVM, while LBM and MCM belongs to mesoscale methods. Two strategies exist in combing these numerical methods. For the first one, the whole domain is divided into multiple subdomains and different domains use various numerical methods. Message passing among subdomains decides the accuracy of this type of multiscale numerical method. For the second one, various parameters are solved with different numerical methods. These two types of multiscale methods are both discussed in this chapter.", "doi": null, "authors": [ "Zheng Li", "Mo Yang", "Yuwen Zhang" ], "journal": "Multiscale Thermal Transport in Energy Systems, Nova Science\n Publishers, Inc., Chapter 9, pp. 281-336, 2016", "tags": [ "cs.CE", "physics.flu-dyn" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1908.08386v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1908.08386v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331382", "title": "Modular Synthesis of Azidobicyclo[2.1.1]hexanes via (3 + 2) Annulation of α-Substituted Vinyl Azides and Bicyclo[1.1.0]butanes.", "content": "Here, we present a mild and rapid method to access azidobicyclo[2.1.1]hexanes via formal (3 + 2) cycloaddition of α-substituted vinyl azides and bicyclo[1.1.0]butanes under Lewis acid catalysis. A wide range of α-substituted vinyl azides were tolerated under mild conditions. Notably, the resulting cycloadducts could be transformed into structurally attractive 3-azabicyclo[3.1.1]heptenes through microwave-promoted rearrangement. The utilities were highlighted by copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition of tertiary alkyl azide and further transformation of the azide and ketone groups.", "journal": "The Journal of organic chemistry", "issn": [ "1520-6904" ], "authors": [ "Sai Hu", "Yuhong Gao", "Yuming Pan", "Dongshun Ni", "Li Deng" ], "doi": "10.1021/acs.joc.4c01920", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331382", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.00328v2", "title": "The standard forms and convergence theory of the Kaczmarz-Tanabe type methods for solving linear systems", "publishedDate": "2022-11-01T08:31:08", "content": "In this paper, we consider the standard forms of two kinds of Kaczmarz-Tanabe type methods, one is derived from the Kaczmarz method and the other is derived from the symmetric Kaczmarz method. As a famous image reconstruction method in computerized tomography, the Kaczmarz method is simple and easy to implement, but its convergence speed is slow, so is the symmetric Kaczmarz method. When the standard forms of the Kaczmarz-Tanabe type methods are obtained, their iteration matrices can be used continuously in the subsequent iterations. Moreover, the iteration matrices can be stored in the image reconstruction devices, which enables the Kaczmarz method and the symmetric Kaczmarz method to be used like the simultaneous iterative reconstructive techniques (SIRT). Meanwhile, theoretical analysis shows that the convergence rate of the symmetric Kaczmarz-Tanabe method is better than that of the Kaczmarz-Tanabe method but is slightly worse than that of two-step Kaczmarz-Tanabe method, which is verified numerically. Numerical experiments also show that the convergence rates of the Kaczmarz-Tanabe method and the symmetric Kaczmarz-Tanabe method are better than those of the SIRT methods.", "doi": null, "authors": [ "Chuan-gang Kang" ], "journal": null, "tags": [ "math.NA", "cs.NA", "65F10, 65F08, 65N22, 65J20" ], "comments": "21pages", "pdf_url": "http://arxiv.org/pdf/2211.00328v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.00328v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331381", "title": "Liquid Atmospheric Pressure Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Using a Commercial Ion Source and Orbitrap Mass Analyzer.", "content": "A liquid atmospheric pressure-matrix-assisted laser desorption/ionization (LAP-MALDI) method has been developed and applied to a commercial AP-MALDI source on a hybrid orbitrap mass analyzer. It is shown that electrospray ionization (ESI)-like mass spectra of a range of peptides and proteins can be acquired by LAP-MALDI mass spectrometry (MS) as previously demonstrated on a homemade LAP-MALDI-Q-TOF setup but without the need of any modification to the commercially available MS equipment used. Multiply charged peptide ions were recorded with a resolution of around 100,000 and a mass accuracy of less than 5 ppm. The higher resolution and mass accuracy of the orbitrap analyzer compared with previously employed Q-TOF instrumentation provided high confidence in bacterial proteoform and species identification by top-down protein analysis.", "journal": "Analytical chemistry", "issn": [ "1520-6882" ], "authors": [ "Bob Challen", "Lily R Adair", "Rainer Cramer" ], "doi": "10.1021/acs.analchem.4c04458", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331381", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1507.03803v1", "title": "$α$-Parameterized Differential Transform Method", "publishedDate": "2015-07-14T11:13:43", "content": "In this paper we propose a new version of differential transform method (we shall call this method as $\\alpha$-parameterized differential transform method), which differs from the traditional differential transform method in calculating coefficients of Taylor polynomials. Numerical examples are presented to illustrate the efficiency and reliability of own method. The result reveal that $\\alpha$-Parameterized differential transform method is a simple and effective numerical algorithm.", "doi": null, "authors": [ "K. Aydemir", "O. Sh. Mukhtarov" ], "journal": null, "tags": [ "math.CA", "math.NA" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1507.03803v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1507.03803v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331379", "title": "A Method for Treating Significant Conformational Changes in Alchemical Free Energy Simulations of Protein-Ligand Binding.", "content": "Relative binding free energy (RBFE) simulation is a rigorous approach to the calculation of quantitatively accurate binding free energy values for protein-ligand binding in which a reference binder is gradually converted to a target binder through alchemical transformation during the simulation. The success of such simulations relies on being able to accurately sample the correct conformational phase space for each alchemical state; however, this becomes a challenge when a significant conformation change occurs between the reference and target binder-receptor complexes. Increasing the simulation time and using enhanced sampling methods can be helpful, but effects can be limited, especially when the free energy barrier between conformations is high or when the correct target complex conformation is difficult to find and maintain. Current RBFE protocols seed the reference complex structure into every alchemical window of the simulation. In our study, we describe an improved protocol in which the reference structure is seeded into the first half of the alchemical windows, and the target structure is seeded into the second half of the alchemical windows. By applying information about the relevant correct end point conformations to different simulation windows from the beginning, the need for large barrier crossings or simulation prediction of the correct structures during an alchemical simulation is in many cases obviated. In the diverse cases we examine below, the simulations yielded free energy predictions that are satisfactory as compared to experiment and superior to running the simulations utilizing the conventional protocol. The method is straightforward to implement for publicly available FEP workflows.", "journal": "Journal of chemical theory and computation", "issn": [ "1549-9626" ], "authors": [ "Junzhuo Liao", "Alina P Sergeeva", "Edward D Harder", "Lingle Wang", "Jared M Sampson", "Barry Honig", "Richard A Friesner" ], "doi": "10.1021/acs.jctc.4c00954", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331379", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1904.03331v1", "title": "A conforming discontinuous Galerkin finite element method", "publishedDate": "2019-04-06T01:29:37", "content": "A new finite element method with discontinuous approximation is introduced for solving second order elliptic problem. Since this method combines the features of both conforming finite element method and discontinuous Galerkin (DG) method, we call it conforming DG method. While using DG finite element space, this conforming DG method maintains the features of the conforming finite element method such as simple formulation and strong enforcement of boundary condition. Therefore, this finite element method has the flexibility of using discontinuous approximation and simplicity in formulation of the conforming finite element method. Error estimates of optimal order are established for the corresponding discontinuous finite element approximation in both a discrete $H^1$ norm and the $L^2$ norm. Numerical results are presented to confirm the theory.", "doi": null, "authors": [ "Xiu Ye", "Shangyou Zhang" ], "journal": null, "tags": [ "math.NA" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1904.03331v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1904.03331v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331345", "title": "Cortical microstructural alterations in different stages of Parkinson's disease.", "content": "To explore the cortical microstructural alterations in Parkinson's disease (PD) at different stages. 149 PD patients and 76 healthy controls were included. PD patients were divided into early stage PD (EPD) (Hoehn-Yahr stage ≤ 2) and moderate-to-late stage PD (MLPD) (Hoehn-Yahr stage ≥ 2.5) according to their Hoehn-Yahr stages. All participants underwent two-shell diffusion MRI and the images were fitted to Neurite Orientation Dispersion and Density Imaging (NODDI) model to obtain the neurite density index (NDI) and orientation dispersion index (ODI) to reflect the cortical microstructure. We used gray matter-based spatial statistics method to compare the voxel-wise cortical NODDI metrics between groups. Partial correlation was used to correlate the NODDI metrics and global composite outcome in PD patients. Compared with healthy controls, EPD patients showed lower ODI in widespread regions, covering bilateral frontal, temporal, parietal and occipital cortices, as well as regional lower NDI in bilateral cingulate and frontal lobes. Compared with healthy controls, MLPD patients showed lower ODI and NDI in more widespread regions. Compared with EPD patients, MLPD patients showed lower ODI in bilateral temporal, parietal and occipital cortices, where the ODI values were negatively correlated with global composite outcome in PD patients. PD patients showed widespread cortical microstructural degeneration, characterized by reduced neurite density and orientation dispersion, and the cortical neuritic microstructure exhibit progressive degeneration during the progression of PD.", "journal": "Brain imaging and behavior", "issn": [ "1931-7565" ], "authors": [ "Xueqin Bai", "Tao Guo", "Xiaojun Guan", "Cheng Zhou", "Jingjing Wu", "Haoting Wu", "Xiaocao Liu", "Chengqing Wu", "Jingwen Chen", "Jiaqi Wen", "Jianmei Qin", "Sijia Tan", "Xiaojie DuanMu", "Luyan Gu", "Ting Gao", "Peiyu Huang", "Baorong Zhang", "Xiaojun Xu", "Xiangwu Zheng", "Minming Zhang" ], "doi": "10.1007/s11682-024-00931-5", "publishedDate": "2024-09-12T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331345", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1912.12743v1", "title": "A fitted L-Multi-point Flux Approximation method for pricing options", "publishedDate": "2019-12-29T21:49:15", "content": "In this paper, we introduce a special kind of finite volume method called Multi-Point Flux Approximation method (MPFA) to price European and American options in two dimensional domain. We focus on the L-MPFA method for space discretization of the diffusion term of Black-Scholes operator. The degeneracy of the Black Scholes operator is tackled using the fitted finite volume method. This combination of fitted finite volume method and L-MPFA method coupled to upwind methods gives us a novel scheme called the fitted L-MPFA method. Numerical experiments show the accuracy of the novel fitted L-MPFA method comparing to well known schemes for pricing options.", "doi": null, "authors": [ "Rock Stephane Koffi", "Antoine Tambue" ], "journal": null, "tags": [ "math.NA", "cs.NA" ], "comments": "arXiv admin note: substantial text overlap with arXiv:1905.05052", "pdf_url": "http://arxiv.org/pdf/1912.12743v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1912.12743v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/1i9f", "title": "STRUCTURAL CHARACTERIZATION OF THE COMPLEX OF THE REV RESPONSE ELEMENT RNA WITH A SELECTED PEPTIDE", "content": "Structural characterization of the complex of the Rev response element RNA with a selected peptide. - Zhang Q, Harada K, Cho HS, Frankel A, Wemmer DE Chem Biol (8) 511-20 (2001)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/1i9f_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/1i9f", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1, 2 ], "score": 3.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4evu", "title": "Crystal structure of C-terminal domain of putative periplasmic protein ydgH from S. enterica", "content": "Structural and functional characterization of DUF1471 domains of Salmonella proteins SrfN, YdgH/SssB, and YahO. - Michalska K, Cui H, Xu X, Brown RN, Cort JR, Heffron F, Nakayasu ES, Savchenko A, Adkins JN, Joachimiak A, Program for the Characterization of Secreted Effector Proteins (PCSEP), Midwest Center for Structural Genomics (MCSG) PLoS One (9) e101787 (2014)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4evu_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4evu", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/6jic", "title": "Identification and Characterization of a carboxypeptidase inhibitor from Lycium barbarum", "content": "Identification and characterization of a wolfberry carboxypeptidase inhibitor from Lycium barbarum. - Tan WL, Wong KH, Huang JY, Tay SV, Wang SJ Food Chem (351) 129338 (2021)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/6jic_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/6jic", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2knp", "title": "Isolation and characterization of peptides from Momordica cochinchinensis seeds.", "content": "Isolation and characterization of peptides from Momordica cochinchinensis seeds. - Daly NL, Chan L J Nat Prod (72) 1453-8 (2009)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2knp_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2knp", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2k3c", "title": "Structural and Functional Characterization of TM IX of the NHE1 Isoform of the Na+/H+ Exchanger", "content": "Structural and functional characterization of transmembrane segment IX of the NHE1 isoform of the Na+/H+ exchanger. - Reddy T, Ding J, Li X, Sykes BD, Fliegel L, Rainey JK J Biol Chem (283) 22018-30 (2008)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2k3c_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2k3c", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331411", "title": "Unraveling the adsorption-limited hydrogen oxidation reaction at palladium surface via in situ electron microscopy.", "content": "Palladium (Pd) catalysts have been extensively studied for the direct synthesis of H", "journal": "Proceedings of the National Academy of Sciences of the United States of America", "issn": [ "1091-6490" ], "authors": [ "Yukun Liu", "Kunmo Koo", "Zugang Mao", "Xianbiao Fu", "Xiaobing Hu", "Vinayak P Dravid" ], "doi": "10.1073/pnas.2408277121", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331411", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331343", "title": "Detection of Shiga toxin-producing Escherichia coli in dairy cows: genetic characterization and inhibition of adherence by catlle anti-STEC antibodies to HEp-2 cell.", "content": "Shiga toxin-producing Escherichia coli (STEC) is a zoonotic pathogen associated with severe disease. Cattle are recognized as the primary animal reservoir of STEC. This study reports the occurrence and characterization of STEC from dairy cows and evaluates the inhibition of adherence by catlle anti-STEC antibodies to the HEp-2 cell. From 151 samples, 30% (n = 45) were positive for stx by PCR screening (25.21% of dairy cows and 46.8% of growing calves). From these positive samples, 17 STEC isolates were characterized. In dairy cows, 3 out of 17 samples carried stx2, 3 out of 17 possessed stx1, and 2 out of 17 carried stx1/stx2. In growing cows, 8 out of 17 samples carried stx1 and 1 out of 17 carried stx1/stx2. Other virulence factors such as ehxA, saa, iha, cah, and eae were detected. The strains were typed into 3 E. coli O groups (O26, O91, and O130). The analysis of the HEp-2 adherence assays indicated that all serum from both cattle categories presented high levels of inhibition of adherence. Considering the severity of the symptoms caused by STEC in humans, searching for factors influencing the colonization of STEC in cattle would help identify strategies to avoid transmission and STEC infection.", "journal": "Veterinary research communications", "issn": [ "1573-7446" ], "authors": [ "Rocío Colello", "M Victoria Vélez", "Marcelo Rodríguez", "Ariel Rogé", "Analía I Etcheverría", "Nora Lía Padola" ], "doi": "10.1007/s11259-024-10557-z", "publishedDate": "2024-09-21T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331343", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331330", "title": "Production, Characterization, Kinetics, and Thermodynamics Analysis of Amyloglucosidase from Fungal Consortium.", "content": "The current study aimed to produce an amyloglucosidase enzyme from the fungal consortium. The best amylolytic fungal consortia were identified as Alternaria alternata and Aspergillus niger through the 18S rDNA technique. Fermentation kinetics and various nutritional and cultural parameters were analyzed. Maximum production was obtained in M4 media, pH 5.5, 30 °C, and 4 mL inoculum at 150 rpm after 72 h of incubation. Along with that, sodium nitrate at 2.5%, maltose, beef extract 1%, zinc sulfate (0.1%), and Tween 80 (0.1%) supported the maximum amyloglucosidase production. Amyloglucosidase was partially purified up to 1.6 purification fold with a specific activity of 1.84 Umg", "journal": "Applied biochemistry and biotechnology", "issn": [ "1559-0291" ], "authors": [ "Imran Ali", "Roheena Abdullah", "Asifa Saleem", "Kinza Nisar", "Afshan Kaleem", "Mehwish Iqtedar", "Irfana Iqbal", "Xiaoming Chen" ], "doi": "10.1007/s12010-024-05067-2", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331330", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331193", "title": "Exploring the heterogeneity of interstitial cells of Cajal and their properties in gastrointestinal mesenchymal tumors applying single-cell RNA sequencing analysis.", "content": "Gastrointestinal mesenchymal stromal tumors (GISTs) are a group of intramural tumors that exhibit a wide range of morphologies. Dysfunction or loss of interstitial cells of Cajal (ICCs) is correlated with the disorders of gastrointestinal motility. At present, the characterization and molecular mechanisms underlying the role of ICCs in GIST are still not clear.", "journal": "Discover oncology", "issn": [ "2730-6011" ], "authors": [ "Yongjun Zhu", "Rui Zhang", "Shipai Zhang", "Haijun Hu" ], "doi": "10.1007/s12672-024-01372-8", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331193", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331189", "title": "Epidemiology, genetic characterization and population structure analysis of lumpy skin disease virus from North India.", "content": "Lumpy skin disease (LSD) is a transboundary, viral disease of cattle with a significant economic impact on the livestock industry. This study describes the epidemiological investigations of outbreaks of LSD that occurred in 2022 in three Indian states viz., Haryana, Himachal Pradesh and Rajasthan and the genetic characterization of Lumpy skin disease viruses (LSDVs). Also, the population structure analysis of LSDVs was carried out. Out of 138 scab samples tested from suspected cattle for LSDV, 106 were found positive. Of these, nine representative scab samples were further genetically characterized. Phylogenetic analysis based on the P32 and EEV gene sequences depicted that the LSDV strains of the present study had nucleotide identity of 100% and 99.10-99.45%, respectively with the LSDV/2019 field strains of India. Multiple sequence alignment of the EEV glycoprotein gene sequences revealed nucleotide polymorphisms at three positions viz., G178A, G253A and A459G in circulating LSDV/2022 field strains. Based on the median joining network analysis of the EEV gene, 12 haplotypes were identified among the LSDV populations. Population structure analysis corresponding to the EEV gene revealed high haplotype (0.8486 ± 0.026) and low nucleotide diversities (0.00636 ± 0.0006) and negative values for neutrality indices, indicating a high number of closely related haplotypes and the studied population may have undergone a recent expansion. The findings will help in understanding the distribution and dynamics of LSDV populations, which will prove pivotal in designing and implementing effective management and control strategies.", "journal": "Tropical animal health and production", "issn": [ "1573-7438" ], "authors": [ "Pallavi Moudgil", "Ramesh Kumar", "Punit Jhandai", "Sameer Kamboj", "Khushbu Bishnoi", "Kushal Grakh", "Renu Gupta", "Rajesh Khurana", "Naresh Jindal" ], "doi": "10.1007/s11250-024-04102-y", "publishedDate": "2024-09-11T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331189", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331177", "title": "Combining SiO", "content": "Cadmium (Cd) pollution in water and soil seriously threatens human health. Biochar and nanomaterials have high potential for solving the cadmium pollution problem due to their abundant pores and high specific surface area. Here, the preparation of the composite material SiO", "journal": "Environmental geochemistry and health", "issn": [ "1573-2983" ], "authors": [ "Shirui Peng", "Jing Liu", "Guofei Pan", "Yan Qin", "Zhixing Yang", "Xiaomu Yang", "Minghua Gu", "Zhiqiang Zhu", "Yanyan Wei" ], "doi": "10.1007/s10653-024-02243-5", "publishedDate": "2024-09-17T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331177", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331087", "title": "Effect of bioceramic inclusions on gel-cast aliphatic polymer membranes for bone tissue engineering applications: An in vitro study.", "content": "Polylactic acid (PLA) has been extensively used in tissue engineering. However, poor mechanical properties and low cell affinity have limited its pertinence in load bearing bone tissue regeneration (BTR) devices.", "journal": "Bio-medical materials and engineering", "issn": [ "1878-3619" ], "authors": [ "Vasudev Vivekanand Nayak", "Edmara T P Bergamo", "Vijayavenkataraman Sanjairaj", "Rakesh Kumar Behera", "Nikhil Gupta", "Paulo G Coelho", "Lukasz Witek" ], "doi": "10.3233/BME-240079", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331087", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331013", "title": "Targeted synthesis of gold nanorods and characterization of their tailored surface properties using optical and X-ray spectroscopy.", "content": "In recent years, nanophotonics have had a transformative impact on harnessing energy, directing chemical reactions, and enabling novel molecular dynamics for thermodynamically intensive applications. Plasmonic nanoparticles have emerged as a tool for confining light on nanometer-length scales where regions of intense electromagnetic fields can be precisely tuned for controlled surface chemistry. We demonstrate a precision pH-driven synthesis of gold nanorods with optical resonance properties widely tunable across the near-infrared spectrum. Through controlled electrostatic interactions, we can perform selective adsorbate molecule attachment and monitor the surface transitions through spectroscopic techniques that include ground-state absorption spectrophotometry, two-dimensional X-ray absorption near-edge spectroscopy, Fourier-transform infrared spectroscopy, and surface-enhanced Raman spectroscopy. We elucidate the electronic, structural, and chemical factors that contribute to plasmon-molecule dynamics at the nanoscale with broad implications for the fields of energy, photonics, and bio-inspired materials.", "journal": "Physical chemistry chemical physics : PCCP", "issn": [ "1463-9084" ], "authors": [ "David G Schauer", "Jona Bredehoeft", "Umar Yunusa", "Ajith Pattammattel", "Hans Jakob Wörner", "Emily A Sprague-Klein" ], "doi": "10.1039/d4cp01993h", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331013", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330976", "title": "Synthesis, Characterization and Antibacterial Activity Evaluation of CuO NPs and B-CuO NPs obtained from Livistona chinensis leaf extract.", "content": "Nanoparticles (NPs) exhibit fascinating size-dependent chemical and physical characteristics that make them useful for a variety of applications. The present paper reports the green synthesis of CuO NPs and B-doped CuO NPs (B-CuO NPs) from Livistona chinensis leaf extract. Not much work has been reported on the use of the plant extract for the fabrication of NPs, particularly those of Cu and its doped counterparts. Various spectroscopic techniques were used to characterize the synthesized NPs. In the FT-IR spectra, peaks obtained at 504 cm-1 to 600 cm-1 were due to Cu-O vibrations. The energy dispersive X-ray analysis (EDX) spectra confirmed the CuO NPs' composition and B's presence inside the NPs. The peak pattern in X-ray diffraction (XRD) spectrum confirmed the crystalline and monoclinic phases of the NPs. The average crystalline size of CuO NPs and B-CuO NPs was 19.56 nm and 17.30 nm respectively. The CuO and B-CuO NPs were tested against three Gram-positive bacterial strains namely Bacillus subtilis, Micrococcus luteus, and Staphylococcus aureus and three Gram-negative Escherichia coli, Salmonella abony, and Pseudomonas aeruginosa through Agar well diffusion method and it was found that CuO NPs showed higher activity than B-CuO NPs.", "journal": "Chemistry & biodiversity", "issn": [ "1612-1880" ], "authors": [ "Ekhlakh Veg", "Azam Raza", "Smita Rai", "Swati Sharma", "Anushka Pandey", "Mohammad Imran Ahmad", "Sabeeha Jabeena", "Seema Joshi", "Tahmeena Khan" ], "doi": "10.1002/cbdv.202401596", "publishedDate": "2024-09-27T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330976", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330972", "title": "Gel-Gel Phase Separation in Clustered Poly(ethylene glycol) Hydrogel with Enhanced Hydrophobicity.", "content": "The development of hydrophobic poly(ethylene glycol) (PEG) hydrogels, which are typically hydrophilic, could significantly enhance their application as artificial extracellular matrices. In this study, we designed PEG hydrogels with enhanced hydrophobicity through gel-gel phase separation (GGPS), a phenomenon that uniquely enhances hydrophobicity under ambient conditions, and we elucidated the pivotal role of elasticity in this process. We hypothesized that increased elasticity would amplify GGPS, thereby improving the hydrophobicity and cell adhesion on PEG hydrogel surfaces, despite their inherent hydrophilicity. To test this hypothesis, we engineered dilute oligo-PEG gels via a two-step process, creating polymer networks from tetra-PEG clusters with multiple reaction points. These oligo-PEG gels exhibited significantly higher elasticity, turbidity, and shrinkage upon water immersion compared to dilute PEG gels. Detailed characterization through confocal laser scanning microscopy, rheological measurements, and cell adhesion assays revealed distinct biphasic structures, increased hydrophobicity, and enhanced cell attachability in the dilute oligo-PEG gels. Our findings confirm that elasticity is crucial for effective GGPS, providing a novel method for tailoring hydrogel properties without chemical modification. This research introduces a new paradigm for designing biomaterials with improved cell-scaffolding capabilities, offering significant potential for tissue engineering and regenerative medicine.", "journal": "ACS macro letters", "issn": [ "2161-1653" ], "authors": [ "Shohei Ishikawa", "Takashi Yasuda", "Yasuhide Iwanaga", "Takamasa Sakai" ], "doi": "10.1021/acsmacrolett.4c00448", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330972", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7bna", "title": "ANISOTROPIC THERMAL-PARAMETER REFINEMENT OF THE DNA DODECAMER CGCGAATTCGCG BY THE SEGMENTED RIGID-BODY METHOD", "content": "Anisotropic Thermal-Parameter Refinement of the DNA Dodecamer CGCGAATTCGCG by the Segmented Rigid-Body Method - Holbrook SR, Dickerson RE, Kim S-H Acta Crystallogr., B (41) 255-262 (1985)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7bna_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7bna", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7wkj", "title": "A COVID-19 T-cell response detection method based on a newly identified human CD8+ T cell epitope from SARS-CoV-2-Hubei Province, 2021.", "content": "A COVID-19 T-Cell Response Detection Method Based on a Newly Identified Human CD8+ T Cell Epitope from SARS-CoV-2 - Hubei Province, China, 2021. - Zhang J, Lu D, Li M, Liu MS, Yao SJ, Zhan JB, Liu J, Gao GF China CDC Wkly (4) 83-87 (2022)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7wkj_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7wkj", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2mor", "title": "A tensor-free method for the structural and dynamical refinement of proteins using residual dipolar couplings", "content": "A tensor-free method for the structural and dynamical refinement of proteins using residual dipolar couplings. - Camilloni C, Vendruscolo M J Phys Chem B (119) 653-61 (2015)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2mor_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2mor", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2nr2", "title": "The MUMO (minimal under-restraining minimal over-restraining) method for the determination of native states ensembles of proteins", "content": "The MUMO (minimal under-restraining minimal over-restraining) method for the determination of native state ensembles of proteins. - Richter B, Gsponer J, Varnai P, Salvatella X, Vendruscolo M J Biomol NMR (37) 117-35 (2007)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2nr2_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2nr2", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h56", "title": "Crystal structure of endothiapepsin PF_cryo3 in complex with AC39729 at 100 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h56_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h56", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h5w", "title": "Crystal structure of endothiapepsin PF_RT2 in complex with JFD03909 at 296 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h5w_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h5w", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h58", "title": "Crystal structure of endothiapepsin PF_RT2 in complex with AC39729 at 296 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h58_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h58", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h5u", "title": "Crystal structure of endothiapepsin PF_cryo3 in complex with JFD03909 at 100 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h5u_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h5u", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331462", "title": "Ablation of Supraventricular Arrhythmias With as Low as Reasonably Achievable X-Ray exposure (AALARA): Results of Prospective, Observational, Multicenter, Multinational, Open-Label Registry Study on Real World Data Using Routine Ensite 3D Mapping During SVT Ablation.", "content": "The reduction of fluoroscopic exposure during catheter ablation of supraventricular arrhythmias is widely adopted by experienced electrophysiology physicians with a relatively short learning curve and is becoming the standard of care in many parts of the world. While observational studies in the United States and some parts of Western Europe have evaluated the minimal fluoroscopic approach, there are scarce real-world data for this technique and the generalizability of outcomes in other economic regions.", "journal": "Pacing and clinical electrophysiology : PACE", "issn": [ "1540-8159" ], "authors": [ "Mohammad Amin", "Ayan Abdrakhmanov", "Evgeniy Kropotkin", "Vasil Traykov", "Zoltán Salló", "László Gellér", "Faizel Lorgat", "Oleg Sapelnikov", "Ondrej Toman", "Khalid Al-Muti", "Mohamed Aljaabari", "Adrian Bystriansky", "László Környei", "Nebojša Mujović", "Stefanie Simons", "Nándor Szegedi" ], "doi": "10.1111/pace.15075", "publishedDate": "2024-09-04T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331462", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331444", "title": "Silicone sling surgery for congenital ptosis: Tarsal tunnel technique.", "content": "This was a prospective, interventional, comparative study conducted on patients with congenital simple severe ptosis. A novel method of silicone rod fixation to the tarsus (tarsal tunnel technique, group 1) was done compared with a conventional technique of silicone rod fixation (suture fixation technique, group 2) in frontalis suspension surgery. A total of 30 patients were randomized into two groups of 15 patients each. Postoperatively, MRD1, vertical palpebral aperture, and eyelid fold height were comparable in both groups till the last follow-up with stability in eyelid position. Patient satisfaction scores showed similar results with good-fair satisfaction grading in 13 patients in group 1 and 11 patients in group 2 at 6 months follow-up. No significant complications occurred in either group. Tarsal tunnel fixation of silicone rods is a novel method in sling surgery with optimal cosmetic and function outcomes. Further long-term studies are needed to validate the results of the technique.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Neelam Pushker", "Manish Mahabir", "Sahil Agrawal", "Mandeep Singh Bajaj" ], "doi": "10.4103/IJO.IJO_2766_23", "publishedDate": "2024-03-10T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331444", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331443", "title": "Evaluation of antioxidant status of lens epithelial cells in cataract patients.", "content": "The main factor that causes cataracts is the increased oxidative stress and imbalance of an antioxidant defense mechanism, which leads to significant changes in the lens microarchitecture. Senile cataract is the most common type of acquired cataracts due to aging.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Kranti Santosh Sorte Gawali", "Avinash Namdeo Jadhao", "Trupti Diwan Ramteke", "Neelam Jayant Patil", "Harshal Sahare" ], "doi": "10.4103/IJO.IJO_19_24", "publishedDate": "2024-04-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331443", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331437", "title": "Analysis of anthropometric measurements taken from the periocular region in healthy young individuals with different somatotypes.", "content": "Anthropometric parameters related with the periocular region (PR) have gained great importance with the optical technology used in the treatment of eye defects. They have also become important parameters that determine the limits of treatment in aesthetic surgery procedures in PR and the treatment of orbital diseases. The aim of this study was to examine the relationship of PR measurements with somatotype.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Sıdıka Karaketir", "Demet Şencan", "Serdar Çolakoğlu", "Deniz Şenol" ], "doi": "10.4103/IJO.IJO_2836_23", "publishedDate": "2024-02-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331437", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331418", "title": "Hydrophobic ZIF-8 nanoparticles loaded on chitosan for improved methanol adsorption from fermented wine.", "content": "Metal-organic frameworks (MOFs) have great potential for the adsorption of minor molecular alcohols in the vapor phase. However, the drawbacks of powdered MOFs, including low recyclability and problematic separation, limit their application in fermented wine. Chitosan (CS) is a low-cost, eco-friendly, moldable matrix used in the food industry. In this study, a novel CS@ZIF-8 adsorbent with excellent microporous surface area was successfully synthesized by incorporating hydrophobic ZIF-8 into CS. The results showed that CS@ZIF-8 beads had a high adsorption affinity for methanol at a Zn", "journal": "Journal of food science", "issn": [ "1750-3841" ], "authors": [ "Mibin Lin", "Jia Sha", "Zhonghao Zhu", "Penghui Ye", "Kai Zhao", "Kaijun Xiao" ], "doi": "10.1111/1750-3841.17397", "publishedDate": "2024-08-31T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331418", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331382", "title": "Modular Synthesis of Azidobicyclo[2.1.1]hexanes via (3 + 2) Annulation of α-Substituted Vinyl Azides and Bicyclo[1.1.0]butanes.", "content": "Here, we present a mild and rapid method to access azidobicyclo[2.1.1]hexanes via formal (3 + 2) cycloaddition of α-substituted vinyl azides and bicyclo[1.1.0]butanes under Lewis acid catalysis. A wide range of α-substituted vinyl azides were tolerated under mild conditions. Notably, the resulting cycloadducts could be transformed into structurally attractive 3-azabicyclo[3.1.1]heptenes through microwave-promoted rearrangement. The utilities were highlighted by copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition of tertiary alkyl azide and further transformation of the azide and ketone groups.", "journal": "The Journal of organic chemistry", "issn": [ "1520-6904" ], "authors": [ "Sai Hu", "Yuhong Gao", "Yuming Pan", "Dongshun Ni", "Li Deng" ], "doi": "10.1021/acs.joc.4c01920", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331382", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331381", "title": "Liquid Atmospheric Pressure Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Using a Commercial Ion Source and Orbitrap Mass Analyzer.", "content": "A liquid atmospheric pressure-matrix-assisted laser desorption/ionization (LAP-MALDI) method has been developed and applied to a commercial AP-MALDI source on a hybrid orbitrap mass analyzer. It is shown that electrospray ionization (ESI)-like mass spectra of a range of peptides and proteins can be acquired by LAP-MALDI mass spectrometry (MS) as previously demonstrated on a homemade LAP-MALDI-Q-TOF setup but without the need of any modification to the commercially available MS equipment used. Multiply charged peptide ions were recorded with a resolution of around 100,000 and a mass accuracy of less than 5 ppm. The higher resolution and mass accuracy of the orbitrap analyzer compared with previously employed Q-TOF instrumentation provided high confidence in bacterial proteoform and species identification by top-down protein analysis.", "journal": "Analytical chemistry", "issn": [ "1520-6882" ], "authors": [ "Bob Challen", "Lily R Adair", "Rainer Cramer" ], "doi": "10.1021/acs.analchem.4c04458", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331381", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331379", "title": "A Method for Treating Significant Conformational Changes in Alchemical Free Energy Simulations of Protein-Ligand Binding.", "content": "Relative binding free energy (RBFE) simulation is a rigorous approach to the calculation of quantitatively accurate binding free energy values for protein-ligand binding in which a reference binder is gradually converted to a target binder through alchemical transformation during the simulation. The success of such simulations relies on being able to accurately sample the correct conformational phase space for each alchemical state; however, this becomes a challenge when a significant conformation change occurs between the reference and target binder-receptor complexes. Increasing the simulation time and using enhanced sampling methods can be helpful, but effects can be limited, especially when the free energy barrier between conformations is high or when the correct target complex conformation is difficult to find and maintain. Current RBFE protocols seed the reference complex structure into every alchemical window of the simulation. In our study, we describe an improved protocol in which the reference structure is seeded into the first half of the alchemical windows, and the target structure is seeded into the second half of the alchemical windows. By applying information about the relevant correct end point conformations to different simulation windows from the beginning, the need for large barrier crossings or simulation prediction of the correct structures during an alchemical simulation is in many cases obviated. In the diverse cases we examine below, the simulations yielded free energy predictions that are satisfactory as compared to experiment and superior to running the simulations utilizing the conventional protocol. The method is straightforward to implement for publicly available FEP workflows.", "journal": "Journal of chemical theory and computation", "issn": [ "1549-9626" ], "authors": [ "Junzhuo Liao", "Alina P Sergeeva", "Edward D Harder", "Lingle Wang", "Jared M Sampson", "Barry Honig", "Richard A Friesner" ], "doi": "10.1021/acs.jctc.4c00954", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331379", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331345", "title": "Cortical microstructural alterations in different stages of Parkinson's disease.", "content": "To explore the cortical microstructural alterations in Parkinson's disease (PD) at different stages. 149 PD patients and 76 healthy controls were included. PD patients were divided into early stage PD (EPD) (Hoehn-Yahr stage ≤ 2) and moderate-to-late stage PD (MLPD) (Hoehn-Yahr stage ≥ 2.5) according to their Hoehn-Yahr stages. All participants underwent two-shell diffusion MRI and the images were fitted to Neurite Orientation Dispersion and Density Imaging (NODDI) model to obtain the neurite density index (NDI) and orientation dispersion index (ODI) to reflect the cortical microstructure. We used gray matter-based spatial statistics method to compare the voxel-wise cortical NODDI metrics between groups. Partial correlation was used to correlate the NODDI metrics and global composite outcome in PD patients. Compared with healthy controls, EPD patients showed lower ODI in widespread regions, covering bilateral frontal, temporal, parietal and occipital cortices, as well as regional lower NDI in bilateral cingulate and frontal lobes. Compared with healthy controls, MLPD patients showed lower ODI and NDI in more widespread regions. Compared with EPD patients, MLPD patients showed lower ODI in bilateral temporal, parietal and occipital cortices, where the ODI values were negatively correlated with global composite outcome in PD patients. PD patients showed widespread cortical microstructural degeneration, characterized by reduced neurite density and orientation dispersion, and the cortical neuritic microstructure exhibit progressive degeneration during the progression of PD.", "journal": "Brain imaging and behavior", "issn": [ "1931-7565" ], "authors": [ "Xueqin Bai", "Tao Guo", "Xiaojun Guan", "Cheng Zhou", "Jingjing Wu", "Haoting Wu", "Xiaocao Liu", "Chengqing Wu", "Jingwen Chen", "Jiaqi Wen", "Jianmei Qin", "Sijia Tan", "Xiaojie DuanMu", "Luyan Gu", "Ting Gao", "Peiyu Huang", "Baorong Zhang", "Xiaojun Xu", "Xiangwu Zheng", "Minming Zhang" ], "doi": "10.1007/s11682-024-00931-5", "publishedDate": "2024-09-12T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331345", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/1i9f", "title": "STRUCTURAL CHARACTERIZATION OF THE COMPLEX OF THE REV RESPONSE ELEMENT RNA WITH A SELECTED PEPTIDE", "content": "Structural characterization of the complex of the Rev response element RNA with a selected peptide. - Zhang Q, Harada K, Cho HS, Frankel A, Wemmer DE Chem Biol (8) 511-20 (2001)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/1i9f_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/1i9f", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1, 2 ], "score": 3.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4evu", "title": "Crystal structure of C-terminal domain of putative periplasmic protein ydgH from S. enterica", "content": "Structural and functional characterization of DUF1471 domains of Salmonella proteins SrfN, YdgH/SssB, and YahO. - Michalska K, Cui H, Xu X, Brown RN, Cort JR, Heffron F, Nakayasu ES, Savchenko A, Adkins JN, Joachimiak A, Program for the Characterization of Secreted Effector Proteins (PCSEP), Midwest Center for Structural Genomics (MCSG) PLoS One (9) e101787 (2014)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4evu_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4evu", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/6jic", "title": "Identification and Characterization of a carboxypeptidase inhibitor from Lycium barbarum", "content": "Identification and characterization of a wolfberry carboxypeptidase inhibitor from Lycium barbarum. - Tan WL, Wong KH, Huang JY, Tay SV, Wang SJ Food Chem (351) 129338 (2021)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/6jic_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/6jic", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2knp", "title": "Isolation and characterization of peptides from Momordica cochinchinensis seeds.", "content": "Isolation and characterization of peptides from Momordica cochinchinensis seeds. - Daly NL, Chan L J Nat Prod (72) 1453-8 (2009)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2knp_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2knp", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2k3c", "title": "Structural and Functional Characterization of TM IX of the NHE1 Isoform of the Na+/H+ Exchanger", "content": "Structural and functional characterization of transmembrane segment IX of the NHE1 isoform of the Na+/H+ exchanger. - Reddy T, Ding J, Li X, Sykes BD, Fliegel L, Rainey JK J Biol Chem (283) 22018-30 (2008)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2k3c_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2k3c", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331411", "title": "Unraveling the adsorption-limited hydrogen oxidation reaction at palladium surface via in situ electron microscopy.", "content": "Palladium (Pd) catalysts have been extensively studied for the direct synthesis of H", "journal": "Proceedings of the National Academy of Sciences of the United States of America", "issn": [ "1091-6490" ], "authors": [ "Yukun Liu", "Kunmo Koo", "Zugang Mao", "Xianbiao Fu", "Xiaobing Hu", "Vinayak P Dravid" ], "doi": "10.1073/pnas.2408277121", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331411", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331343", "title": "Detection of Shiga toxin-producing Escherichia coli in dairy cows: genetic characterization and inhibition of adherence by catlle anti-STEC antibodies to HEp-2 cell.", "content": "Shiga toxin-producing Escherichia coli (STEC) is a zoonotic pathogen associated with severe disease. Cattle are recognized as the primary animal reservoir of STEC. This study reports the occurrence and characterization of STEC from dairy cows and evaluates the inhibition of adherence by catlle anti-STEC antibodies to the HEp-2 cell. From 151 samples, 30% (n = 45) were positive for stx by PCR screening (25.21% of dairy cows and 46.8% of growing calves). From these positive samples, 17 STEC isolates were characterized. In dairy cows, 3 out of 17 samples carried stx2, 3 out of 17 possessed stx1, and 2 out of 17 carried stx1/stx2. In growing cows, 8 out of 17 samples carried stx1 and 1 out of 17 carried stx1/stx2. Other virulence factors such as ehxA, saa, iha, cah, and eae were detected. The strains were typed into 3 E. coli O groups (O26, O91, and O130). The analysis of the HEp-2 adherence assays indicated that all serum from both cattle categories presented high levels of inhibition of adherence. Considering the severity of the symptoms caused by STEC in humans, searching for factors influencing the colonization of STEC in cattle would help identify strategies to avoid transmission and STEC infection.", "journal": "Veterinary research communications", "issn": [ "1573-7446" ], "authors": [ "Rocío Colello", "M Victoria Vélez", "Marcelo Rodríguez", "Ariel Rogé", "Analía I Etcheverría", "Nora Lía Padola" ], "doi": "10.1007/s11259-024-10557-z", "publishedDate": "2024-09-21T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331343", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331330", "title": "Production, Characterization, Kinetics, and Thermodynamics Analysis of Amyloglucosidase from Fungal Consortium.", "content": "The current study aimed to produce an amyloglucosidase enzyme from the fungal consortium. The best amylolytic fungal consortia were identified as Alternaria alternata and Aspergillus niger through the 18S rDNA technique. Fermentation kinetics and various nutritional and cultural parameters were analyzed. Maximum production was obtained in M4 media, pH 5.5, 30 °C, and 4 mL inoculum at 150 rpm after 72 h of incubation. Along with that, sodium nitrate at 2.5%, maltose, beef extract 1%, zinc sulfate (0.1%), and Tween 80 (0.1%) supported the maximum amyloglucosidase production. Amyloglucosidase was partially purified up to 1.6 purification fold with a specific activity of 1.84 Umg", "journal": "Applied biochemistry and biotechnology", "issn": [ "1559-0291" ], "authors": [ "Imran Ali", "Roheena Abdullah", "Asifa Saleem", "Kinza Nisar", "Afshan Kaleem", "Mehwish Iqtedar", "Irfana Iqbal", "Xiaoming Chen" ], "doi": "10.1007/s12010-024-05067-2", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331330", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331193", "title": "Exploring the heterogeneity of interstitial cells of Cajal and their properties in gastrointestinal mesenchymal tumors applying single-cell RNA sequencing analysis.", "content": "Gastrointestinal mesenchymal stromal tumors (GISTs) are a group of intramural tumors that exhibit a wide range of morphologies. Dysfunction or loss of interstitial cells of Cajal (ICCs) is correlated with the disorders of gastrointestinal motility. At present, the characterization and molecular mechanisms underlying the role of ICCs in GIST are still not clear.", "journal": "Discover oncology", "issn": [ "2730-6011" ], "authors": [ "Yongjun Zhu", "Rui Zhang", "Shipai Zhang", "Haijun Hu" ], "doi": "10.1007/s12672-024-01372-8", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331193", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331189", "title": "Epidemiology, genetic characterization and population structure analysis of lumpy skin disease virus from North India.", "content": "Lumpy skin disease (LSD) is a transboundary, viral disease of cattle with a significant economic impact on the livestock industry. This study describes the epidemiological investigations of outbreaks of LSD that occurred in 2022 in three Indian states viz., Haryana, Himachal Pradesh and Rajasthan and the genetic characterization of Lumpy skin disease viruses (LSDVs). Also, the population structure analysis of LSDVs was carried out. Out of 138 scab samples tested from suspected cattle for LSDV, 106 were found positive. Of these, nine representative scab samples were further genetically characterized. Phylogenetic analysis based on the P32 and EEV gene sequences depicted that the LSDV strains of the present study had nucleotide identity of 100% and 99.10-99.45%, respectively with the LSDV/2019 field strains of India. Multiple sequence alignment of the EEV glycoprotein gene sequences revealed nucleotide polymorphisms at three positions viz., G178A, G253A and A459G in circulating LSDV/2022 field strains. Based on the median joining network analysis of the EEV gene, 12 haplotypes were identified among the LSDV populations. Population structure analysis corresponding to the EEV gene revealed high haplotype (0.8486 ± 0.026) and low nucleotide diversities (0.00636 ± 0.0006) and negative values for neutrality indices, indicating a high number of closely related haplotypes and the studied population may have undergone a recent expansion. The findings will help in understanding the distribution and dynamics of LSDV populations, which will prove pivotal in designing and implementing effective management and control strategies.", "journal": "Tropical animal health and production", "issn": [ "1573-7438" ], "authors": [ "Pallavi Moudgil", "Ramesh Kumar", "Punit Jhandai", "Sameer Kamboj", "Khushbu Bishnoi", "Kushal Grakh", "Renu Gupta", "Rajesh Khurana", "Naresh Jindal" ], "doi": "10.1007/s11250-024-04102-y", "publishedDate": "2024-09-11T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331189", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331177", "title": "Combining SiO", "content": "Cadmium (Cd) pollution in water and soil seriously threatens human health. Biochar and nanomaterials have high potential for solving the cadmium pollution problem due to their abundant pores and high specific surface area. Here, the preparation of the composite material SiO", "journal": "Environmental geochemistry and health", "issn": [ "1573-2983" ], "authors": [ "Shirui Peng", "Jing Liu", "Guofei Pan", "Yan Qin", "Zhixing Yang", "Xiaomu Yang", "Minghua Gu", "Zhiqiang Zhu", "Yanyan Wei" ], "doi": "10.1007/s10653-024-02243-5", "publishedDate": "2024-09-17T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331177", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331138", "title": "The plant early recombinosome: a high security complex to break DNA during meiosis.", "content": "The formacion of numerous unpredictable DNA Double Strand Breaks (DSBs) on chromosomes iniciates meiotic recombination. In this perspective, we propose a 'multi-key lock' model to secure the risky but necesary breaks as well as a 'one per pair of cromatids' model for the topoisomerase-like early recombinosome. During meiosis, homologous chromosomes recombine at few sites of crossing-overs (COs) to ensure correct segregation. The initiation of meiotic recombination involves the formation of DNA double strand breaks (DSBs) during prophase I. Too many DSBs are dangerous for genome integrity: if these DSBs are not properly repaired, it could potentially lead to chromosomal fragmentation. Too few DSBs are also problematic: if the obligate CO cannot form between bivalents, catastrophic unequal segregation of univalents lead to the formation of sterile aneuploid spores. Research on the regulation of the formation of these necessary but risky DSBs has recently advanced in yeast, mammals and plants. DNA DSBs are created by the enzymatic activity of the early recombinosome, a topoisomerase-like complex containing SPO11. This opinion paper reviews recent insights on the regulation of the SPO11 cofactors necessary for the introduction of temporally and spatially controlled DSBs. We propose that a 'multi-key-lock' model for each subunit of the early recombinosome complex is required to secure the formation of DSBs. We also discuss the hypothetical implications that the established topoisomerase-like nature of the SPO11 core-complex can have in creating DSB in only one of the two replicated chromatids of early prophase I meiotic chromosomes. This hypothetical 'one per pair of chromatids' DSB formation model could optimize the faithful repair of the self-inflicted DSBs. Each DSB could use three potential intact homologous DNA sequences as repair template: one from the sister chromatid and the two others from the homologous chromosomes.", "journal": "Plant reproduction", "issn": [ "2194-7961" ], "authors": [ "Nahid Rafiei", "Arnaud Ronceret" ], "doi": "10.1007/s00497-024-00509-7", "publishedDate": "2024-08-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331138", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331087", "title": "Effect of bioceramic inclusions on gel-cast aliphatic polymer membranes for bone tissue engineering applications: An in vitro study.", "content": "Polylactic acid (PLA) has been extensively used in tissue engineering. However, poor mechanical properties and low cell affinity have limited its pertinence in load bearing bone tissue regeneration (BTR) devices.", "journal": "Bio-medical materials and engineering", "issn": [ "1878-3619" ], "authors": [ "Vasudev Vivekanand Nayak", "Edmara T P Bergamo", "Vijayavenkataraman Sanjairaj", "Rakesh Kumar Behera", "Nikhil Gupta", "Paulo G Coelho", "Lukasz Witek" ], "doi": "10.3233/BME-240079", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331087", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331082", "title": "Full-Incision Double-Eyelid Blepharoplasty with Selective Sensory Nerve Preservation.", "content": "Full-incision double-eyelid blepharoplasty can result in upper eyelid skin numbness postoperatively. However, few studies have examined sensory loss after eyelid surgery. We propose a novel surgical approach with selective sensory nerve preservation to prevent postoperative upper eyelid numbness.", "journal": "Aesthetic plastic surgery", "issn": [ "1432-5241" ], "authors": [ "Jing Liu", "Jinlong Huang", "Jia Liu", "Xiaodong Chen", "Gang Chen", "Jinming Wang" ], "doi": "10.1007/s00266-024-04371-w", "publishedDate": "2024-09-03T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331082", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331462", "title": "Ablation of Supraventricular Arrhythmias With as Low as Reasonably Achievable X-Ray exposure (AALARA): Results of Prospective, Observational, Multicenter, Multinational, Open-Label Registry Study on Real World Data Using Routine Ensite 3D Mapping During SVT Ablation.", "content": "The reduction of fluoroscopic exposure during catheter ablation of supraventricular arrhythmias is widely adopted by experienced electrophysiology physicians with a relatively short learning curve and is becoming the standard of care in many parts of the world. While observational studies in the United States and some parts of Western Europe have evaluated the minimal fluoroscopic approach, there are scarce real-world data for this technique and the generalizability of outcomes in other economic regions.", "journal": "Pacing and clinical electrophysiology : PACE", "issn": [ "1540-8159" ], "authors": [ "Mohammad Amin", "Ayan Abdrakhmanov", "Evgeniy Kropotkin", "Vasil Traykov", "Zoltán Salló", "László Gellér", "Faizel Lorgat", "Oleg Sapelnikov", "Ondrej Toman", "Khalid Al-Muti", "Mohamed Aljaabari", "Adrian Bystriansky", "László Környei", "Nebojša Mujović", "Stefanie Simons", "Nándor Szegedi" ], "doi": "10.1111/pace.15075", "publishedDate": "2024-09-04T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331462", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331444", "title": "Silicone sling surgery for congenital ptosis: Tarsal tunnel technique.", "content": "This was a prospective, interventional, comparative study conducted on patients with congenital simple severe ptosis. A novel method of silicone rod fixation to the tarsus (tarsal tunnel technique, group 1) was done compared with a conventional technique of silicone rod fixation (suture fixation technique, group 2) in frontalis suspension surgery. A total of 30 patients were randomized into two groups of 15 patients each. Postoperatively, MRD1, vertical palpebral aperture, and eyelid fold height were comparable in both groups till the last follow-up with stability in eyelid position. Patient satisfaction scores showed similar results with good-fair satisfaction grading in 13 patients in group 1 and 11 patients in group 2 at 6 months follow-up. No significant complications occurred in either group. Tarsal tunnel fixation of silicone rods is a novel method in sling surgery with optimal cosmetic and function outcomes. Further long-term studies are needed to validate the results of the technique.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Neelam Pushker", "Manish Mahabir", "Sahil Agrawal", "Mandeep Singh Bajaj" ], "doi": "10.4103/IJO.IJO_2766_23", "publishedDate": "2024-03-10T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331444", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331443", "title": "Evaluation of antioxidant status of lens epithelial cells in cataract patients.", "content": "The main factor that causes cataracts is the increased oxidative stress and imbalance of an antioxidant defense mechanism, which leads to significant changes in the lens microarchitecture. Senile cataract is the most common type of acquired cataracts due to aging.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Kranti Santosh Sorte Gawali", "Avinash Namdeo Jadhao", "Trupti Diwan Ramteke", "Neelam Jayant Patil", "Harshal Sahare" ], "doi": "10.4103/IJO.IJO_19_24", "publishedDate": "2024-04-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331443", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331437", "title": "Analysis of anthropometric measurements taken from the periocular region in healthy young individuals with different somatotypes.", "content": "Anthropometric parameters related with the periocular region (PR) have gained great importance with the optical technology used in the treatment of eye defects. They have also become important parameters that determine the limits of treatment in aesthetic surgery procedures in PR and the treatment of orbital diseases. The aim of this study was to examine the relationship of PR measurements with somatotype.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Sıdıka Karaketir", "Demet Şencan", "Serdar Çolakoğlu", "Deniz Şenol" ], "doi": "10.4103/IJO.IJO_2836_23", "publishedDate": "2024-02-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331437", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331418", "title": "Hydrophobic ZIF-8 nanoparticles loaded on chitosan for improved methanol adsorption from fermented wine.", "content": "Metal-organic frameworks (MOFs) have great potential for the adsorption of minor molecular alcohols in the vapor phase. However, the drawbacks of powdered MOFs, including low recyclability and problematic separation, limit their application in fermented wine. Chitosan (CS) is a low-cost, eco-friendly, moldable matrix used in the food industry. In this study, a novel CS@ZIF-8 adsorbent with excellent microporous surface area was successfully synthesized by incorporating hydrophobic ZIF-8 into CS. The results showed that CS@ZIF-8 beads had a high adsorption affinity for methanol at a Zn", "journal": "Journal of food science", "issn": [ "1750-3841" ], "authors": [ "Mibin Lin", "Jia Sha", "Zhonghao Zhu", "Penghui Ye", "Kai Zhao", "Kaijun Xiao" ], "doi": "10.1111/1750-3841.17397", "publishedDate": "2024-08-31T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331418", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331411", "title": "Unraveling the adsorption-limited hydrogen oxidation reaction at palladium surface via in situ electron microscopy.", "content": "Palladium (Pd) catalysts have been extensively studied for the direct synthesis of H", "journal": "Proceedings of the National Academy of Sciences of the United States of America", "issn": [ "1091-6490" ], "authors": [ "Yukun Liu", "Kunmo Koo", "Zugang Mao", "Xianbiao Fu", "Xiaobing Hu", "Vinayak P Dravid" ], "doi": "10.1073/pnas.2408277121", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331411", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331382", "title": "Modular Synthesis of Azidobicyclo[2.1.1]hexanes via (3 + 2) Annulation of α-Substituted Vinyl Azides and Bicyclo[1.1.0]butanes.", "content": "Here, we present a mild and rapid method to access azidobicyclo[2.1.1]hexanes via formal (3 + 2) cycloaddition of α-substituted vinyl azides and bicyclo[1.1.0]butanes under Lewis acid catalysis. A wide range of α-substituted vinyl azides were tolerated under mild conditions. Notably, the resulting cycloadducts could be transformed into structurally attractive 3-azabicyclo[3.1.1]heptenes through microwave-promoted rearrangement. The utilities were highlighted by copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition of tertiary alkyl azide and further transformation of the azide and ketone groups.", "journal": "The Journal of organic chemistry", "issn": [ "1520-6904" ], "authors": [ "Sai Hu", "Yuhong Gao", "Yuming Pan", "Dongshun Ni", "Li Deng" ], "doi": "10.1021/acs.joc.4c01920", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331382", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331381", "title": "Liquid Atmospheric Pressure Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Using a Commercial Ion Source and Orbitrap Mass Analyzer.", "content": "A liquid atmospheric pressure-matrix-assisted laser desorption/ionization (LAP-MALDI) method has been developed and applied to a commercial AP-MALDI source on a hybrid orbitrap mass analyzer. It is shown that electrospray ionization (ESI)-like mass spectra of a range of peptides and proteins can be acquired by LAP-MALDI mass spectrometry (MS) as previously demonstrated on a homemade LAP-MALDI-Q-TOF setup but without the need of any modification to the commercially available MS equipment used. Multiply charged peptide ions were recorded with a resolution of around 100,000 and a mass accuracy of less than 5 ppm. The higher resolution and mass accuracy of the orbitrap analyzer compared with previously employed Q-TOF instrumentation provided high confidence in bacterial proteoform and species identification by top-down protein analysis.", "journal": "Analytical chemistry", "issn": [ "1520-6882" ], "authors": [ "Bob Challen", "Lily R Adair", "Rainer Cramer" ], "doi": "10.1021/acs.analchem.4c04458", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331381", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4d0q", "title": "Hyaluronan Binding Module of the Streptococcal Pneumoniae Hyaluronate Lyase", "content": "Conformational analysis of the Streptococcus pneumoniae hyaluronate lyase and characterization of its hyaluronan-specific carbohydrate-binding module. - Suits MDL, Pluvinage B, Law A, Liu Y, Palma AS, Chai W, Feizi T, Boraston AB J Biol Chem (289) 27264-27277 (2014)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4d0q_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4d0q", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4am5", "title": "Bacterioferritin from Blastochloris viridis", "content": "Structural characterization of bacterioferritin from Blastochloris viridis. - Wahlgren WY, Omran H, von Stetten D, Royant A, van der Post S, Katona G PLoS One (7) e46992 (2012)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4am5_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4am5", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331379", "title": "A Method for Treating Significant Conformational Changes in Alchemical Free Energy Simulations of Protein-Ligand Binding.", "content": "Relative binding free energy (RBFE) simulation is a rigorous approach to the calculation of quantitatively accurate binding free energy values for protein-ligand binding in which a reference binder is gradually converted to a target binder through alchemical transformation during the simulation. The success of such simulations relies on being able to accurately sample the correct conformational phase space for each alchemical state; however, this becomes a challenge when a significant conformation change occurs between the reference and target binder-receptor complexes. Increasing the simulation time and using enhanced sampling methods can be helpful, but effects can be limited, especially when the free energy barrier between conformations is high or when the correct target complex conformation is difficult to find and maintain. Current RBFE protocols seed the reference complex structure into every alchemical window of the simulation. In our study, we describe an improved protocol in which the reference structure is seeded into the first half of the alchemical windows, and the target structure is seeded into the second half of the alchemical windows. By applying information about the relevant correct end point conformations to different simulation windows from the beginning, the need for large barrier crossings or simulation prediction of the correct structures during an alchemical simulation is in many cases obviated. In the diverse cases we examine below, the simulations yielded free energy predictions that are satisfactory as compared to experiment and superior to running the simulations utilizing the conventional protocol. The method is straightforward to implement for publicly available FEP workflows.", "journal": "Journal of chemical theory and computation", "issn": [ "1549-9626" ], "authors": [ "Junzhuo Liao", "Alina P Sergeeva", "Edward D Harder", "Lingle Wang", "Jared M Sampson", "Barry Honig", "Richard A Friesner" ], "doi": "10.1021/acs.jctc.4c00954", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331379", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/6xur", "title": "RNA dodecamer with a 6-hydrazino-2-aminopurine modified base", "content": "Thioguanosine Conversion Enables mRNA-Lifetime Evaluation by RNA Sequencing Using Double Metabolic Labeling (TUC-seq DUAL). - Ennifar E, Micura R, Gasser C, Brillet K Angew Chem Int Ed Engl (59) 6881-6886 (2020)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/6xur_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/6xur", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/6xus", "title": "RNA dodecamer with a 6-hydrazino-2-aminopurine modified base", "content": "Thioguanosine Conversion Enables mRNA-Lifetime Evaluation by RNA Sequencing Using Double Metabolic Labeling (TUC-seq DUAL). - Ennifar E, Micura R, Gasser C, Brillet K Angew Chem Int Ed Engl (59) 6881-6886 (2020)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/6xus_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/6xus", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2311.07029v1", "title": "Accurate Time-segmented Loss Model for SiC MOSFETs in Electro-thermal Multi-Rate Simulation", "publishedDate": "2023-11-13T02:28:11", "content": "Compared with silicon (Si) power devices, Silicon carbide (SiC) devices have the advantages of fast switching speed and low on-resistance. However, the effects of non-ideal characteristics of SiC MOSFETs and stray parameters (especially parasitic inductance) on switching losses need to be further evaluated. In this paper, a transient loss model based on SiC MOSFET and SiC Schottky barrier diode (SBD) switching pairs is proposed. The transient process analysis is simplified by time segmentation of the transient process of power switching devices. The electro-thermal simulation calculates the junction temperature and updates the temperature-related parameters with the proposed loss model and the thermal network model. A multi-rate data exchange strategy is proposed to solve the problem of disparity in timescales between circuit simulation and thermal network simulation. The CREE CMF20120D SiC MOSFET device is used for the experimental verification. The experimental results verify the accuracy of the model which provides guidance for the circuit design of SiC MOSFETs. All the parameters of the loss model can be extracted from the datasheet, which is practical in power electronics design.", "doi": null, "authors": [ "Jialin Zheng", "Zhengming Zhao", "Han Xu", "Weicheng Liu", "Yangbin Zeng" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2311.07029v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2311.07029v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2201.03821v1", "title": "Dipole Scattering at the Interface: The Origin of Low Mobility observed in SiC MOSFETs", "publishedDate": "2022-01-11T07:59:48", "content": "In this work, the origin of the low free electron mobility in SiC MOSFETs is investigated using the scattering theory of two-dimensional electron gases. We first establish that neither phonon scattering nor Coulomb scattering can be the cause of the low observed mobility in SiC MOSFETs; we establish this fact by comparing the theoretically calculated mobility considering these effects with experimental observations. By considering the threshold voltages and the effective field dependence of the mobility in SiC MOSFETs, it is concluded that the scattering centers of the dominant mechanism are electrically neutral and exhibit a short-range scattering potential. By considering charge distribution around a neutral defect at the interface, it is established that an electric dipole induced by the defect can act as a short-range scattering potential. We then calculate the mobility in SiC MOSFETs assuming that there exist a high density of dipoles at the interface. The calculated dipole-scattering-limited mobility shows a similar dependence on the effective field dependence to that observed in experimental results. Thus, we conclude that scattering induced by a high density of electric dipoles at the interface is dominant cause of the low mobility in SiC MOSFETs.", "doi": "10.1063/5.0086172", "authors": [ "Tetsuo Hatakeyama", "Hirohisa Hirai", "Mitsuru Simetani", "Dai Okamoto", "Mitsuo Okamoto", "Shinsuke Harada" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "16pages, 3 figures", "pdf_url": "http://arxiv.org/pdf/2201.03821v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2201.03821v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331138", "title": "The plant early recombinosome: a high security complex to break DNA during meiosis.", "content": "The formacion of numerous unpredictable DNA Double Strand Breaks (DSBs) on chromosomes iniciates meiotic recombination. In this perspective, we propose a 'multi-key lock' model to secure the risky but necesary breaks as well as a 'one per pair of cromatids' model for the topoisomerase-like early recombinosome. During meiosis, homologous chromosomes recombine at few sites of crossing-overs (COs) to ensure correct segregation. The initiation of meiotic recombination involves the formation of DNA double strand breaks (DSBs) during prophase I. Too many DSBs are dangerous for genome integrity: if these DSBs are not properly repaired, it could potentially lead to chromosomal fragmentation. Too few DSBs are also problematic: if the obligate CO cannot form between bivalents, catastrophic unequal segregation of univalents lead to the formation of sterile aneuploid spores. Research on the regulation of the formation of these necessary but risky DSBs has recently advanced in yeast, mammals and plants. DNA DSBs are created by the enzymatic activity of the early recombinosome, a topoisomerase-like complex containing SPO11. This opinion paper reviews recent insights on the regulation of the SPO11 cofactors necessary for the introduction of temporally and spatially controlled DSBs. We propose that a 'multi-key-lock' model for each subunit of the early recombinosome complex is required to secure the formation of DSBs. We also discuss the hypothetical implications that the established topoisomerase-like nature of the SPO11 core-complex can have in creating DSB in only one of the two replicated chromatids of early prophase I meiotic chromosomes. This hypothetical 'one per pair of chromatids' DSB formation model could optimize the faithful repair of the self-inflicted DSBs. Each DSB could use three potential intact homologous DNA sequences as repair template: one from the sister chromatid and the two others from the homologous chromosomes.", "journal": "Plant reproduction", "issn": [ "2194-7961" ], "authors": [ "Nahid Rafiei", "Arnaud Ronceret" ], "doi": "10.1007/s00497-024-00509-7", "publishedDate": "2024-08-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331138", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.05580v1", "title": "Power Cycling Test Bench for Accelerated Life Testing for Reliability Assessment of SiC-MOSFET in Extreme Offshore Environment", "publishedDate": "2020-01-15T22:21:05", "content": "The reliability of power semiconductor switches is important when considering their vital role in power electronic converters for downhole subsea applications. Respect to technology advancements in material sciences, power MOSFETs with wide band gap materials have been proposed such as silicon carbide (SiC) and gallium nitride (GaN) as an alternative to existing silicon (Si) based MOSFETs and IGBTs. However, reliability analysis should be performed before substituting SiC-MOSFETs in the place of existing Si-MOSFETs and IGBTs. Due to costly equipment of experimental test setup for accelerated life test, a good reliable and precise simulation-based test bench should be used to test the life test procedure before implementing actual hardware. Therefore, this paper introduces a power cycle (PC) test bench for accelerated life testing for reliability assessment of SiC-MOSFET in harsh offshore environment. The introduced test bench is a simulation-based of power switch in SimScape and LTspice and has been validated with datasheet of 1.2 kV SiC-MOSFET, CAS300M12BM2 by CREE. Preliminary hardware circuits are also shown for further experimental tests. The captured data from the Device-Under-Test (DUT) in different ambient temperatures are envisioned and provide critical information about the failure mechanisms and lifetime characteristics of power devices. The provided lifetime characteristics data of SiC-MOSFET can be used to statistically estimate the Remaining-Useful-Lifetime (RUL) of component in a real application such as downhole motor drives.", "doi": null, "authors": [ "Shiva Geraei", "Saeed Hasanpour Aghdam" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": "9 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2001.05580v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.05580v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331082", "title": "Full-Incision Double-Eyelid Blepharoplasty with Selective Sensory Nerve Preservation.", "content": "Full-incision double-eyelid blepharoplasty can result in upper eyelid skin numbness postoperatively. However, few studies have examined sensory loss after eyelid surgery. We propose a novel surgical approach with selective sensory nerve preservation to prevent postoperative upper eyelid numbness.", "journal": "Aesthetic plastic surgery", "issn": [ "1432-5241" ], "authors": [ "Jing Liu", "Jinlong Huang", "Jia Liu", "Xiaodong Chen", "Gang Chen", "Jinming Wang" ], "doi": "10.1007/s00266-024-04371-w", "publishedDate": "2024-09-03T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331082", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2107.10408v1", "title": "Temperature dependence of on-state inter-terminal capacitances (Cgd and Cgs) of SiC MOSFETs and frequency limitations of their measurements", "publishedDate": "2021-07-22T00:35:44", "content": "Inter-terminal capacitances (ITCs) have major influence on the dynamic performance of power SiC MOSFETs. Knowledge of the exact values for the ITCs is required in order to perform accurate and predictive compact model simulations of their dynamic performance. Since commercial SiC MOSFETs are capable of operating in a wide range of temperatures, it is important to know the values of ITCs in the whole temperature range of operation. Direct measurements of the ITCs with standard equipment is possible only at low current levels (i.e. in the off-state (Vgs < Vth) for Vds > 0 V), however their values in the on-state (Vgs>Vth) also influence the MOSFETs switching performance. In this work, ITCs of a planar SiC MOSFET in the on-state are studied by the means of a calibrated TCAD model, revealing substantial temperature dependence in the range of 300-450 K. In the first approximation, this temperature dependence of the ITCs can be explained by a weaker temperature dependence of the MOSFET channel resistance in comparison to its JFET and epitaxial layer resistances. In addition, it is shown that at high frequencies stray inductances of the TO-247-3 package result in a change of the extracted values of the on-state ITCs. This effect is already notable at 1 MHz.", "doi": null, "authors": [ "Alexander Tsibizov", "Roger Stark", "Ulrike Grossner" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "5 pages, 5 figures, accepted to VIRTUAL ISSUE ON SIC 2020 (The 13th\n European Conference on Silicon Carbide and Related Materials (ECSCRM\n 2020-2021))", "pdf_url": "http://arxiv.org/pdf/2107.10408v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2107.10408v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331081", "title": "A Multicenter, Randomized, Double-Blind, Parallel-Grouped, Positive-Controlled, Non-Inferiority Clinical Study to Evaluate the Efficacy and Safety of Injectable Calcium Hydroxylapatite Microsphere Hydrogel Fillers in the Correction of Nasolabial Fold in Chinese Subjects.", "content": "Soft tissue fillers are used to improve the appearance of nasolabial folds (NLFs). This study aimed to compare the efficacy and safety of a new calcium hydroxylapatite microsphere hydrogel filler (Aphranel) versus Restylane for correcting NLFs.", "journal": "Aesthetic plastic surgery", "issn": [ "1432-5241" ], "authors": [ "Yuyan Pan", "Zucheng Luo", "Shuwei Chen", "Nanhang Lu", "Yong Zhang", "Yanwen Yang", "Cheng Chen", "Jiaqi Liu", "Rufan Zhang", "Yining Ge", "Fazhi Qi", "Ming Zhu" ], "doi": "10.1007/s00266-024-04378-3", "publishedDate": "2024-09-03T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331081", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1711.02832v1", "title": "High-Speed Gate Driver Using GaN HEMTs for 20-MHz Hard Switching of SiC MOSFETs", "publishedDate": "2017-11-08T05:11:17", "content": "In this paper, we investigated a gate driver using a GaN HEMT push-pull configuration for the high-frequency hard switching of a SiC power MOSFET. Low on-resistance and low input capacitance of GaN HEMTs are suitable for a high-frequency gate driver from the logic level, and robustness of SiC MOSFET with high avalanche capability is suitable for a valve transistor in power converters. Our proposed gate driver consists of digital isolators, complementary Si MOSFETs, and GaN HEMTs. The GaN HEMT push-pull stage has a high driving capability owing to its superior switching characteristics, and complementary Si MOSFETs can enhance the control signal from the digital isolator. We investigated limiting factors of the switching frequency of the proposed gate driver by focusing on each circuit component and proposed an improved driving configuration for the gate driver. As a result, 20-MHz hard switching of a SiC MOSFET was achieved using the improved gate driver with GaN HEMTs.", "doi": null, "authors": [ "Takafumi Okuda", "Takashi Hikihara" ], "journal": null, "tags": [ "eess.SP" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1711.02832v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1711.02832v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331059", "title": "Advanced Hybrid Closed-Loop Therapy Compared With Standard Insulin Therapy Intrapartum and Early Postpartum in Women With Type 1 Diabetes: A Secondary Observational Analysis From the CRISTAL Randomized Controlled Trial.", "content": "To determine efficacy and safety of intrapartum and early postpartum advanced hybrid closed-loop (AHCL) therapy compared with standard insulin therapy in pregnant women with type 1 diabetes (T1D).", "journal": "Diabetes care", "issn": [ "1935-5548" ], "authors": [ "Kaat Beunen", "Pieter Gillard", "Nancy Van Wilder", "Dominique Ballaux", "Gerd Vanhaverbeke", "Youri Taes", "Xavier-Philippe Aers", "Frank Nobels", "Liesbeth Van Huffel", "Joke Marlier", "Dahae Lee", "Joke Cuypers", "Vanessa Preumont", "Sarah E Siegelaar", "Rebecca C Painter", "Annouschka Laenen", "Chantal Mathieu", "Katrien Benhalima" ], "doi": "10.2337/dc24-1320", "publishedDate": "2024-08-23T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331059", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2009.04835v1", "title": "Understanding the role of threading dislocations on 4H-SiC MOSFET breakdown under high temperature reverse bias stress", "publishedDate": "2020-09-10T13:20:41", "content": "The origin of dielectric breakdown was studied on 4H-SiC MOSFETs that failed after three months of high temperature reverse bias (HTRB) stress. A local inspection of the failed devices demonstrated the presence of a threading dislocation (TD) at the breakdown location. The nanoscale origin of the dielectric breakdown was highlighted with advanced high-spatial-resolution scanning probe microscopy (SPM) techniques. In particular, SPM revealed the conductive nature of the TD and a local increase of the minority carrier concentration close to the defect. Numerical simulations estimated a hole concentration 13 orders of magnitude larger than in the ideal 4H-SiC crystal. The hole injection in specific regions of the device explained the failure of the gate oxide under stress. In this way, the key role of the TD in the dielectric breakdown of 4H-SiC MOSFET was unambiguously demonstrated.", "doi": "10.1088/1361-6528/ab5ff6", "authors": [ "P. Fiorenza", "M. Alessandrino", "B. Carbone", "C. Di Martino", "A. Russo", "M. Saggio", "C. Venuto", "E. Zanetti", "F. Giannazzo", "F. Roccaforte" ], "journal": "Nanotechnology 31, (2020) 125203", "tags": [ "physics.app-ph", "cond-mat.mtrl-sci" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2009.04835v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2009.04835v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331032", "title": "Methylphenidate reduces spatial attentional bias by modulating fronto-striatal connectivity.", "content": "Spatial attention bias reflects tendency to direct attention to specific side in space. This bias reflects asymmetric dopamine (DA) signaling in the striatum. Administration of DA agonists reduces spatial bias, yet the underlying mechanism is not yet clear. To address this, the current study tested whether methylphenidate (MPH; an indirect DA agonist) reduces orienting bias by modulating fronto-striatal connectivity. 54 adults with consistent bias completed the greyscales task which detects subtle biases during fMRI scanning under MPH (20 mg) or placebo, in a double-blind design. As hypothesized, MPH reduced bias by increasing orienting towards non-preferred hemispace, regardless of whether the initial bias was left or right. MPH-induced increases were found in activation of the medial superior frontal gyrus (mSFG: F[1;53] = 4.632, cluster-defining threshold of P < 0.05, minimal cluster size = 0, p_FWE = 0.036, η2 = 0.08) and its functional connectivity with the caudate (left caudate: F[1;53] = 12.664, p_FWE = 0.001, η2 = 0.192; right caudate: F[1;53] = 11.069, p_FWE = 0.002, η2 = 0.172), when orienting towards the non-preferred hemispace. MPH also reduced mSFG activation and fronto-striatal connectivity for the preferred hemispace. Results suggest modulation of frontal excitability due to increased caudate-mSFG functional connectivity. This mechanism may underlie the positive effect of dopaminergic agonists on abnormal patterns of directing attention in space.", "journal": "Cerebral cortex (New York, N.Y. : 1991)", "issn": [ "1460-2199" ], "authors": [ "Leehe Peled-Avron", "Maryana Daood", "Rachel Ben-Hayun", "Michael Nevat", "Judith Aharon-Peretz", "Roee Admon", "Rachel Tomer" ], "doi": "10.1093/cercor/bhae379", "publishedDate": "2024-09-03T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331032", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2310.06184v2", "title": "A Brief Review of Single Event Burnout Failure Mechanisms and Design Tolerances of Silicon Carbide MOSFETs", "publishedDate": "2023-10-09T22:24:06", "content": "Radiation hardening of the MOSFET is of the highest priority for sustaining high-power systems in the space radiation environment. SiC-based power electronics are being looked at as a strong alternative for high power spaceborne power electronic systems. The SiC MOSFET has been shown to be most prone to SEB of the radiation effects. The knowledge of SiC MOSFET device degradation and failure mechanisms are reviewed. Additionally, the viability of rad-tolerant SiC MOSFET designs and the methods of SEB simulation are evaluated. A merit system is proposed to consider the performance of radiation tolerance and nominal electrical performance. Criteria needed for high-fidelity SEB simulation are also reviewed. This paper stands as a necessary analytical review to intercede the development of rad-hard power devices for space and extreme environment applications.", "doi": "10.3390/electronics13081414", "authors": [ "Christopher A. Grome", "Wei Ji" ], "journal": "Electronics 2024, 13, 1414", "tags": [ "physics.ins-det" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2310.06184v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2310.06184v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330850", "title": "Use of Botulinum Toxin in Upper-Limb Tremor: Systematic Review and Perspectives.", "content": "Tremor is the most common movement disorder, with significant functional and psychosocial consequences. Oral medications have been disappointing or limited by side effects. Surgical techniques are effective but associated with risks and adverse events. Botulinum toxin (BT) represents a promising avenue but there is still no double-blind evidence of efficacy on upper limb function. A systematic review on the effects of BT in upper-limb tremor was conducted.", "journal": "Toxins", "issn": [ "2072-6651" ], "authors": [ "Damien Motavasseli", "Cécile Delorme", "Nicolas Bayle", "Jean-Michel Gracies", "Emmanuel Roze", "Marjolaine Baude" ], "doi": "10.3390/toxins16090392", "publishedDate": "2024-09-07T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330850", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1810.11452v1", "title": "Analysis and Development of SiC MOSFET Boost Converter as Solar PV Pre-regulator", "publishedDate": "2018-10-24T07:55:26", "content": "Renewable energy source such as photovoltaic (PV) cell generates power from the sun light by converting solar power to electrical power with no moving parts and less maintenance. A single photovoltaic cell produces voltage of low level. In order to boost up the voltage, a DC-DC boost converter is used. In order to use this DC-DC converter for high voltage and high frequency applications, Silicon Carbide (SiC) device is most preferred because of larger current carrying capability, higher voltage blocking capability, high operating temperature and less static and dynamic losses than the traditional silicon (Si) power switches. In the proposed work, the static and dynamic characteristics of SiC MOSFET for different temperatures are observed. A SiC MOSFET based boost converter is investigated which is powered by PV source. This DC - DC converter is controlled using a Pulse-Width Method (PWM) and the duty cycle d is calculated for tracking the maximum power point using incremental conductance algorithm of the PV systems implemented in FPGA. Simulation studies are carried out in MATLAB/SIMULINK.A prototype of the SiC converter is built and the results are verified experimentally. The performance parameters of the proposed converter such as output voltage ripple input current ripple and losses are computed and it is compared with the classical silicon (Si) MOSFET converter.", "doi": null, "authors": [ "A. Bharathi sankar", "R. Seyezhai" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mes-hall", "eess.SP", "physics.ins-det" ], "comments": "24 pages", "pdf_url": "http://arxiv.org/pdf/1810.11452v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1810.11452v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330689", "title": "Recent Progress on Stability of Layered Double Hydroxide-Based Catalysts for Oxygen Evolution Reaction.", "content": "Water electrolysis is regarded as one of the most viable technologies for the generation of green hydrogen. Nevertheless, the anodic oxygen evolution reaction (OER) constitutes a substantial obstacle to the large-scale deployment of this technology, due to the considerable overpotential resulting from the retardation kinetics associated with the OER. The development of low-cost, high-activity, and long-lasting OER catalysts has emerged as a pivotal research area. Layered double hydroxides (LDHs) have garnered significant attention due to their suitability for use with base metals, which are cost-effective and exhibit enhanced activity. However, the current performance of LDHs OER catalysts is still far from meeting the demands of industrial applications, particularly in terms of their long-term stability. In this review, we provide an overview of the causes for the deactivation of LDHs OER catalysts and present an analysis of the various mechanisms employed to improve the stability of these catalysts, including the synthesis of LDH ultrathin nanosheets, adjustment of components and doping, dissolution and redeposition, defect creation and corrosion, and utilization of advanced carbon materials.", "journal": "Nanomaterials (Basel, Switzerland)", "issn": [ "2079-4991" ], "authors": [ "Lielie He", "Yangen Zhou", "Mengran Wang", "Simin Li", "Yanqing Lai" ], "doi": "10.3390/nano14181533", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330689", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.15174v1", "title": "A Guideline for Silicon Carbide MOSFET Thermal Characterization based on Source-Drain Voltage", "publishedDate": "2022-11-28T09:34:45", "content": "Thermal transient measurement based on source-drain voltage is a standard method to characterize thermal properties of silicon semiconductors but is doubtful to be directly applied to silicon carbide (SiC) devices. To evaluate its feasibility and limitations, this paper conducts a comprehensive investigation into its accuracy, resolution, and stability towards yielding the structure information of SiC MOSFET using the source-drain voltage as the temperature sensitive electrical parameter. The whole characterization process involves two main procedures and associated key testing parameters, such as gate voltages, sensing and heating currents, etc. Their impacts on both the static and dynamic performances are also investigated with the aim of providing a guideline for conducting a reproducible thermal transient measurement for SiC MOSFETs.", "doi": null, "authors": [ "Yi Zhang", "Yichi Zhang", "Zhiliang Xu", "Zhongxu Wang", "Hon Wong", "Zhebie Lu", "Antonio Caruso" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.15174v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.15174v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330634", "title": "Simultaneously Enhancing the Efficiency and Stability of Perovskite Solar Cells by Using P3HT/PEDOT:PSS as a Double Hole Transport Layer.", "content": "The stability issue of perovskite solar cells (PSCs) has long been of concern to researchers. Poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) is commonly used as a hole transport layer (HTL) in the inverted PSCs to achieve efficient and stable performance. However, PEDOT:PSS can corrode ITO, affecting device efficiency. Moreover, the hydrophilic nature of PEDOT:PSS compromises device stability. In this work, Poly (3-hexylthiophene-2,5-diyl) (P3HT), known for its good hydrophobicity, was used to modify the surface of PEDOT:PSS, reducing its water absorption and thereby enhancing the efficiency and stability of PSCs. The results reveal that incorporating P3HT effectively enhances the hydrophobicity of PEDOT:PSS. Furthermore, it fosters the development of large-grain perovskite film on the PEDOT:PSS/P3HT bilayer. This enhancement leads to a power conversion efficiency (PCE) of 19.78% for PSCs, with an increase by 16% than that of reference cells (17.04% of PCE). Following a duration of 1000 h, the PCE for the device modified with P3HT remains above 90%, while the PCE of the reference device is below 70%. These findings suggest that using P3HT in conjunction with PEDOT:PSS as a bilayer HTL can concurrently and proficiently improve the efficiency and stability of PSCs.", "journal": "Nanomaterials (Basel, Switzerland)", "issn": [ "2079-4991" ], "authors": [ "Xiude Yang", "Minghao Luo", "Qianqian Zhang", "Haishen Huang", "Yanqing Yao", "Yuanlin Yang", "Ying Li", "Wan Cheng", "Ping Li" ], "doi": "10.3390/nano14181476", "publishedDate": "2024-09-06T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330634", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2010.09485v1", "title": "Determination of the Interface between Amorphous Insulator and Crystalline 4H-SiC in Transmission Electron Microscope Image by using Convolutional Neural Network", "publishedDate": "2020-10-14T08:28:01", "content": "A rough interface seems to be one of the possible reasons for low channel mobility (conductivity) in SiC MOSFETs. To evaluate the mobility by interface roughness, we drew a boundary line between amorphous insulator and crystalline 4H-SiC in a cross-sectional image obtained by a transmission electron microscope (TEM), by using the deep learning approach of convolutional neural network (CNN). We show that the CNN model recognizes the interface very well, even when the interface is too rough to draw the boundary line manually. Power spectral density of interface roughness was calculated.", "doi": "10.1063/5.0036982", "authors": [ "Hironori Yoshioka", "Tomonori Honda" ], "journal": "AIP Advances 11, 015101 (2021)", "tags": [ "cond-mat.mtrl-sci", "cond-mat.dis-nn", "cs.LG" ], "comments": "16 pages, 8 figures", "pdf_url": "http://arxiv.org/pdf/2010.09485v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2010.09485v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330545", "title": "The dual-functional role of carboxylate in a nickel-iron catalyst towards efficient oxygen evolution.", "content": "The efficiency of the oxygen evolution reaction (OER) is severely limited by the sluggish proton-coupled electron transfer processes and inadequate long-term stability. Herein, we introduce a carboxylate group (TPA) to modify NiFe layered double hydroxide (NiFe LDH@TPA), resulting in notable improvements in both activity and stability. A combination of spectroscopic and theoretical investigations reveals the dual-functional role of incorporated TPA. It facilitates the deprotonation of OER intermediates while strengthening the Fe-O bond and acting as a molecular fence, ensuring superior OER kinetics and anti-dissolution properties. NiFe LDH@TPA delivers a low overpotential of 200 mV at 10 mA cm", "journal": "Nanoscale", "issn": [ "2040-3372" ], "authors": [ "Dan Wu", "Yuanhua Sun", "Xue Zhang", "Xiaokang Liu", "Linlin Cao", "Tao Yao" ], "doi": "10.1039/d4nr03689a", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330545", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7bna", "title": "ANISOTROPIC THERMAL-PARAMETER REFINEMENT OF THE DNA DODECAMER CGCGAATTCGCG BY THE SEGMENTED RIGID-BODY METHOD", "content": "Anisotropic Thermal-Parameter Refinement of the DNA Dodecamer CGCGAATTCGCG by the Segmented Rigid-Body Method - Holbrook SR, Dickerson RE, Kim S-H Acta Crystallogr., B (41) 255-262 (1985)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7bna_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7bna", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7wkj", "title": "A COVID-19 T-cell response detection method based on a newly identified human CD8+ T cell epitope from SARS-CoV-2-Hubei Province, 2021.", "content": "A COVID-19 T-Cell Response Detection Method Based on a Newly Identified Human CD8+ T Cell Epitope from SARS-CoV-2 - Hubei Province, China, 2021. - Zhang J, Lu D, Li M, Liu MS, Yao SJ, Zhan JB, Liu J, Gao GF China CDC Wkly (4) 83-87 (2022)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7wkj_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7wkj", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2mor", "title": "A tensor-free method for the structural and dynamical refinement of proteins using residual dipolar couplings", "content": "A tensor-free method for the structural and dynamical refinement of proteins using residual dipolar couplings. - Camilloni C, Vendruscolo M J Phys Chem B (119) 653-61 (2015)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2mor_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2mor", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2nr2", "title": "The MUMO (minimal under-restraining minimal over-restraining) method for the determination of native states ensembles of proteins", "content": "The MUMO (minimal under-restraining minimal over-restraining) method for the determination of native state ensembles of proteins. - Richter B, Gsponer J, Varnai P, Salvatella X, Vendruscolo M J Biomol NMR (37) 117-35 (2007)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2nr2_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2nr2", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h56", "title": "Crystal structure of endothiapepsin PF_cryo3 in complex with AC39729 at 100 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h56_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h56", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h5w", "title": "Crystal structure of endothiapepsin PF_RT2 in complex with JFD03909 at 296 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h5w_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h5w", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h58", "title": "Crystal structure of endothiapepsin PF_RT2 in complex with AC39729 at 296 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h58_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h58", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h5u", "title": "Crystal structure of endothiapepsin PF_cryo3 in complex with JFD03909 at 100 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h5u_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h5u", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2310.06184v2", "title": "A Brief Review of Single Event Burnout Failure Mechanisms and Design Tolerances of Silicon Carbide MOSFETs", "publishedDate": "2023-10-09T22:24:06", "content": "Radiation hardening of the MOSFET is of the highest priority for sustaining high-power systems in the space radiation environment. SiC-based power electronics are being looked at as a strong alternative for high power spaceborne power electronic systems. The SiC MOSFET has been shown to be most prone to SEB of the radiation effects. The knowledge of SiC MOSFET device degradation and failure mechanisms are reviewed. Additionally, the viability of rad-tolerant SiC MOSFET designs and the methods of SEB simulation are evaluated. A merit system is proposed to consider the performance of radiation tolerance and nominal electrical performance. Criteria needed for high-fidelity SEB simulation are also reviewed. This paper stands as a necessary analytical review to intercede the development of rad-hard power devices for space and extreme environment applications.", "doi": "10.3390/electronics13081414", "authors": [ "Christopher A. Grome", "Wei Ji" ], "journal": "Electronics 2024, 13, 1414", "tags": [ "physics.ins-det" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2310.06184v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2310.06184v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331462", "title": "Ablation of Supraventricular Arrhythmias With as Low as Reasonably Achievable X-Ray exposure (AALARA): Results of Prospective, Observational, Multicenter, Multinational, Open-Label Registry Study on Real World Data Using Routine Ensite 3D Mapping During SVT Ablation.", "content": "The reduction of fluoroscopic exposure during catheter ablation of supraventricular arrhythmias is widely adopted by experienced electrophysiology physicians with a relatively short learning curve and is becoming the standard of care in many parts of the world. While observational studies in the United States and some parts of Western Europe have evaluated the minimal fluoroscopic approach, there are scarce real-world data for this technique and the generalizability of outcomes in other economic regions.", "journal": "Pacing and clinical electrophysiology : PACE", "issn": [ "1540-8159" ], "authors": [ "Mohammad Amin", "Ayan Abdrakhmanov", "Evgeniy Kropotkin", "Vasil Traykov", "Zoltán Salló", "László Gellér", "Faizel Lorgat", "Oleg Sapelnikov", "Ondrej Toman", "Khalid Al-Muti", "Mohamed Aljaabari", "Adrian Bystriansky", "László Környei", "Nebojša Mujović", "Stefanie Simons", "Nándor Szegedi" ], "doi": "10.1111/pace.15075", "publishedDate": "2024-09-04T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331462", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1810.11452v1", "title": "Analysis and Development of SiC MOSFET Boost Converter as Solar PV Pre-regulator", "publishedDate": "2018-10-24T07:55:26", "content": "Renewable energy source such as photovoltaic (PV) cell generates power from the sun light by converting solar power to electrical power with no moving parts and less maintenance. A single photovoltaic cell produces voltage of low level. In order to boost up the voltage, a DC-DC boost converter is used. In order to use this DC-DC converter for high voltage and high frequency applications, Silicon Carbide (SiC) device is most preferred because of larger current carrying capability, higher voltage blocking capability, high operating temperature and less static and dynamic losses than the traditional silicon (Si) power switches. In the proposed work, the static and dynamic characteristics of SiC MOSFET for different temperatures are observed. A SiC MOSFET based boost converter is investigated which is powered by PV source. This DC - DC converter is controlled using a Pulse-Width Method (PWM) and the duty cycle d is calculated for tracking the maximum power point using incremental conductance algorithm of the PV systems implemented in FPGA. Simulation studies are carried out in MATLAB/SIMULINK.A prototype of the SiC converter is built and the results are verified experimentally. The performance parameters of the proposed converter such as output voltage ripple input current ripple and losses are computed and it is compared with the classical silicon (Si) MOSFET converter.", "doi": null, "authors": [ "A. Bharathi sankar", "R. Seyezhai" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mes-hall", "eess.SP", "physics.ins-det" ], "comments": "24 pages", "pdf_url": "http://arxiv.org/pdf/1810.11452v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1810.11452v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331444", "title": "Silicone sling surgery for congenital ptosis: Tarsal tunnel technique.", "content": "This was a prospective, interventional, comparative study conducted on patients with congenital simple severe ptosis. A novel method of silicone rod fixation to the tarsus (tarsal tunnel technique, group 1) was done compared with a conventional technique of silicone rod fixation (suture fixation technique, group 2) in frontalis suspension surgery. A total of 30 patients were randomized into two groups of 15 patients each. Postoperatively, MRD1, vertical palpebral aperture, and eyelid fold height were comparable in both groups till the last follow-up with stability in eyelid position. Patient satisfaction scores showed similar results with good-fair satisfaction grading in 13 patients in group 1 and 11 patients in group 2 at 6 months follow-up. No significant complications occurred in either group. Tarsal tunnel fixation of silicone rods is a novel method in sling surgery with optimal cosmetic and function outcomes. Further long-term studies are needed to validate the results of the technique.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Neelam Pushker", "Manish Mahabir", "Sahil Agrawal", "Mandeep Singh Bajaj" ], "doi": "10.4103/IJO.IJO_2766_23", "publishedDate": "2024-03-10T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331444", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.15174v1", "title": "A Guideline for Silicon Carbide MOSFET Thermal Characterization based on Source-Drain Voltage", "publishedDate": "2022-11-28T09:34:45", "content": "Thermal transient measurement based on source-drain voltage is a standard method to characterize thermal properties of silicon semiconductors but is doubtful to be directly applied to silicon carbide (SiC) devices. To evaluate its feasibility and limitations, this paper conducts a comprehensive investigation into its accuracy, resolution, and stability towards yielding the structure information of SiC MOSFET using the source-drain voltage as the temperature sensitive electrical parameter. The whole characterization process involves two main procedures and associated key testing parameters, such as gate voltages, sensing and heating currents, etc. Their impacts on both the static and dynamic performances are also investigated with the aim of providing a guideline for conducting a reproducible thermal transient measurement for SiC MOSFETs.", "doi": null, "authors": [ "Yi Zhang", "Yichi Zhang", "Zhiliang Xu", "Zhongxu Wang", "Hon Wong", "Zhebie Lu", "Antonio Caruso" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.15174v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.15174v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331443", "title": "Evaluation of antioxidant status of lens epithelial cells in cataract patients.", "content": "The main factor that causes cataracts is the increased oxidative stress and imbalance of an antioxidant defense mechanism, which leads to significant changes in the lens microarchitecture. Senile cataract is the most common type of acquired cataracts due to aging.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Kranti Santosh Sorte Gawali", "Avinash Namdeo Jadhao", "Trupti Diwan Ramteke", "Neelam Jayant Patil", "Harshal Sahare" ], "doi": "10.4103/IJO.IJO_19_24", "publishedDate": "2024-04-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331443", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2311.07029v1", "title": "Accurate Time-segmented Loss Model for SiC MOSFETs in Electro-thermal Multi-Rate Simulation", "publishedDate": "2023-11-13T02:28:11", "content": "Compared with silicon (Si) power devices, Silicon carbide (SiC) devices have the advantages of fast switching speed and low on-resistance. However, the effects of non-ideal characteristics of SiC MOSFETs and stray parameters (especially parasitic inductance) on switching losses need to be further evaluated. In this paper, a transient loss model based on SiC MOSFET and SiC Schottky barrier diode (SBD) switching pairs is proposed. The transient process analysis is simplified by time segmentation of the transient process of power switching devices. The electro-thermal simulation calculates the junction temperature and updates the temperature-related parameters with the proposed loss model and the thermal network model. A multi-rate data exchange strategy is proposed to solve the problem of disparity in timescales between circuit simulation and thermal network simulation. The CREE CMF20120D SiC MOSFET device is used for the experimental verification. The experimental results verify the accuracy of the model which provides guidance for the circuit design of SiC MOSFETs. All the parameters of the loss model can be extracted from the datasheet, which is practical in power electronics design.", "doi": null, "authors": [ "Jialin Zheng", "Zhengming Zhao", "Han Xu", "Weicheng Liu", "Yangbin Zeng" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2311.07029v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2311.07029v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331437", "title": "Analysis of anthropometric measurements taken from the periocular region in healthy young individuals with different somatotypes.", "content": "Anthropometric parameters related with the periocular region (PR) have gained great importance with the optical technology used in the treatment of eye defects. They have also become important parameters that determine the limits of treatment in aesthetic surgery procedures in PR and the treatment of orbital diseases. The aim of this study was to examine the relationship of PR measurements with somatotype.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Sıdıka Karaketir", "Demet Şencan", "Serdar Çolakoğlu", "Deniz Şenol" ], "doi": "10.4103/IJO.IJO_2836_23", "publishedDate": "2024-02-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331437", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2201.03821v1", "title": "Dipole Scattering at the Interface: The Origin of Low Mobility observed in SiC MOSFETs", "publishedDate": "2022-01-11T07:59:48", "content": "In this work, the origin of the low free electron mobility in SiC MOSFETs is investigated using the scattering theory of two-dimensional electron gases. We first establish that neither phonon scattering nor Coulomb scattering can be the cause of the low observed mobility in SiC MOSFETs; we establish this fact by comparing the theoretically calculated mobility considering these effects with experimental observations. By considering the threshold voltages and the effective field dependence of the mobility in SiC MOSFETs, it is concluded that the scattering centers of the dominant mechanism are electrically neutral and exhibit a short-range scattering potential. By considering charge distribution around a neutral defect at the interface, it is established that an electric dipole induced by the defect can act as a short-range scattering potential. We then calculate the mobility in SiC MOSFETs assuming that there exist a high density of dipoles at the interface. The calculated dipole-scattering-limited mobility shows a similar dependence on the effective field dependence to that observed in experimental results. Thus, we conclude that scattering induced by a high density of electric dipoles at the interface is dominant cause of the low mobility in SiC MOSFETs.", "doi": "10.1063/5.0086172", "authors": [ "Tetsuo Hatakeyama", "Hirohisa Hirai", "Mitsuru Simetani", "Dai Okamoto", "Mitsuo Okamoto", "Shinsuke Harada" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "16pages, 3 figures", "pdf_url": "http://arxiv.org/pdf/2201.03821v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2201.03821v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2212.13211v1", "title": "Adaptive Control of Surge Impedance for Electric Motors in Motor Drive Systems", "publishedDate": "2022-12-26T16:40:55", "content": "This article studies the possibility of controlling the surge impedance of the electric motor in motor drives. The existing solution to suppress (or eliminate) the reflected wave impact on the motor insulation run by a Si-IGBT or SiC-MOSFET-based drive is to use either a sinewave filter or dv/dt filter. The alternative solution suggested in this article is to implement a high-bandwidth electronic circuit at the end of the cable or at the motor terminals to match the surge impedance of the cable and motor. The high-frequency voltage ringing due to the reflected waves in motor drives is around 1 MHz, depending on the cable parameters and the length of the cable. In the proposed method, the electronic circuit can quickly detect the dv/dt rise and fall edges and adjust the electronic circuit equivalent impedance when pulses arrive the motor terminals. Thus, the cable and motor surge impedances can be matched over a short time to prevent reflected waves. As a result, the leakage currents passing through the ball bearing and overvoltage stress on the motor insulation can be suppressed significantly.", "doi": null, "authors": [ "Fahmid Sadeque", "Fariba Fateh", "JiangBiao He", "Behrooz Mirafzal" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2212.13211v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2212.13211v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331418", "title": "Hydrophobic ZIF-8 nanoparticles loaded on chitosan for improved methanol adsorption from fermented wine.", "content": "Metal-organic frameworks (MOFs) have great potential for the adsorption of minor molecular alcohols in the vapor phase. However, the drawbacks of powdered MOFs, including low recyclability and problematic separation, limit their application in fermented wine. Chitosan (CS) is a low-cost, eco-friendly, moldable matrix used in the food industry. In this study, a novel CS@ZIF-8 adsorbent with excellent microporous surface area was successfully synthesized by incorporating hydrophobic ZIF-8 into CS. The results showed that CS@ZIF-8 beads had a high adsorption affinity for methanol at a Zn", "journal": "Journal of food science", "issn": [ "1750-3841" ], "authors": [ "Mibin Lin", "Jia Sha", "Zhonghao Zhu", "Penghui Ye", "Kai Zhao", "Kaijun Xiao" ], "doi": "10.1111/1750-3841.17397", "publishedDate": "2024-08-31T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331418", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2407.13370v2", "title": "Complementary two dimensional carrier profiles of 4H-SiC MOSFETs by Scanning Spreading Resistance Microscopy and Scanning Capacitance Microscopy", "publishedDate": "2024-07-18T10:26:15", "content": "This paper reports the results presented in an invited poster during the International Conference on Silicon Carbide and Related Materials (ICSCRM) 2023 held in Sorrento, Italy. The suitability of scanning probe methods based on atomic force microscopy (AFM) measurements is explored to investigate with high spatial resolution the elementary cell of 4H-SiC power MOSFETs. The two-dimensional (2D) cross-sectional maps demonstrated a high spatial resolution of about 5 nm using the SSRM capabilities. Furthermore, the SCM capabilities enabled visualizing the fluctuations of charge carrier concentration across the different parts of the MOSFETs elementary cell.", "doi": null, "authors": [ "Patrick Fiorenza", "Marco Zignale", "Edoardo. Zanetti", "Mario S. Alessandrino", "Beatrice Carbone", "Alfio Guarnera", "Mario Saggio", "Filippo Giannazzo", "Fabrizio Roccaforte" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mtrl-sci" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2407.13370v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2407.13370v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331382", "title": "Modular Synthesis of Azidobicyclo[2.1.1]hexanes via (3 + 2) Annulation of α-Substituted Vinyl Azides and Bicyclo[1.1.0]butanes.", "content": "Here, we present a mild and rapid method to access azidobicyclo[2.1.1]hexanes via formal (3 + 2) cycloaddition of α-substituted vinyl azides and bicyclo[1.1.0]butanes under Lewis acid catalysis. A wide range of α-substituted vinyl azides were tolerated under mild conditions. Notably, the resulting cycloadducts could be transformed into structurally attractive 3-azabicyclo[3.1.1]heptenes through microwave-promoted rearrangement. The utilities were highlighted by copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition of tertiary alkyl azide and further transformation of the azide and ketone groups.", "journal": "The Journal of organic chemistry", "issn": [ "1520-6904" ], "authors": [ "Sai Hu", "Yuhong Gao", "Yuming Pan", "Dongshun Ni", "Li Deng" ], "doi": "10.1021/acs.joc.4c01920", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331382", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.05580v1", "title": "Power Cycling Test Bench for Accelerated Life Testing for Reliability Assessment of SiC-MOSFET in Extreme Offshore Environment", "publishedDate": "2020-01-15T22:21:05", "content": "The reliability of power semiconductor switches is important when considering their vital role in power electronic converters for downhole subsea applications. Respect to technology advancements in material sciences, power MOSFETs with wide band gap materials have been proposed such as silicon carbide (SiC) and gallium nitride (GaN) as an alternative to existing silicon (Si) based MOSFETs and IGBTs. However, reliability analysis should be performed before substituting SiC-MOSFETs in the place of existing Si-MOSFETs and IGBTs. Due to costly equipment of experimental test setup for accelerated life test, a good reliable and precise simulation-based test bench should be used to test the life test procedure before implementing actual hardware. Therefore, this paper introduces a power cycle (PC) test bench for accelerated life testing for reliability assessment of SiC-MOSFET in harsh offshore environment. The introduced test bench is a simulation-based of power switch in SimScape and LTspice and has been validated with datasheet of 1.2 kV SiC-MOSFET, CAS300M12BM2 by CREE. Preliminary hardware circuits are also shown for further experimental tests. The captured data from the Device-Under-Test (DUT) in different ambient temperatures are envisioned and provide critical information about the failure mechanisms and lifetime characteristics of power devices. The provided lifetime characteristics data of SiC-MOSFET can be used to statistically estimate the Remaining-Useful-Lifetime (RUL) of component in a real application such as downhole motor drives.", "doi": null, "authors": [ "Shiva Geraei", "Saeed Hasanpour Aghdam" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": "9 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2001.05580v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.05580v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331381", "title": "Liquid Atmospheric Pressure Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Using a Commercial Ion Source and Orbitrap Mass Analyzer.", "content": "A liquid atmospheric pressure-matrix-assisted laser desorption/ionization (LAP-MALDI) method has been developed and applied to a commercial AP-MALDI source on a hybrid orbitrap mass analyzer. It is shown that electrospray ionization (ESI)-like mass spectra of a range of peptides and proteins can be acquired by LAP-MALDI mass spectrometry (MS) as previously demonstrated on a homemade LAP-MALDI-Q-TOF setup but without the need of any modification to the commercially available MS equipment used. Multiply charged peptide ions were recorded with a resolution of around 100,000 and a mass accuracy of less than 5 ppm. The higher resolution and mass accuracy of the orbitrap analyzer compared with previously employed Q-TOF instrumentation provided high confidence in bacterial proteoform and species identification by top-down protein analysis.", "journal": "Analytical chemistry", "issn": [ "1520-6882" ], "authors": [ "Bob Challen", "Lily R Adair", "Rainer Cramer" ], "doi": "10.1021/acs.analchem.4c04458", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331381", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2107.10408v1", "title": "Temperature dependence of on-state inter-terminal capacitances (Cgd and Cgs) of SiC MOSFETs and frequency limitations of their measurements", "publishedDate": "2021-07-22T00:35:44", "content": "Inter-terminal capacitances (ITCs) have major influence on the dynamic performance of power SiC MOSFETs. Knowledge of the exact values for the ITCs is required in order to perform accurate and predictive compact model simulations of their dynamic performance. Since commercial SiC MOSFETs are capable of operating in a wide range of temperatures, it is important to know the values of ITCs in the whole temperature range of operation. Direct measurements of the ITCs with standard equipment is possible only at low current levels (i.e. in the off-state (Vgs < Vth) for Vds > 0 V), however their values in the on-state (Vgs>Vth) also influence the MOSFETs switching performance. In this work, ITCs of a planar SiC MOSFET in the on-state are studied by the means of a calibrated TCAD model, revealing substantial temperature dependence in the range of 300-450 K. In the first approximation, this temperature dependence of the ITCs can be explained by a weaker temperature dependence of the MOSFET channel resistance in comparison to its JFET and epitaxial layer resistances. In addition, it is shown that at high frequencies stray inductances of the TO-247-3 package result in a change of the extracted values of the on-state ITCs. This effect is already notable at 1 MHz.", "doi": null, "authors": [ "Alexander Tsibizov", "Roger Stark", "Ulrike Grossner" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "5 pages, 5 figures, accepted to VIRTUAL ISSUE ON SIC 2020 (The 13th\n European Conference on Silicon Carbide and Related Materials (ECSCRM\n 2020-2021))", "pdf_url": "http://arxiv.org/pdf/2107.10408v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2107.10408v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331379", "title": "A Method for Treating Significant Conformational Changes in Alchemical Free Energy Simulations of Protein-Ligand Binding.", "content": "Relative binding free energy (RBFE) simulation is a rigorous approach to the calculation of quantitatively accurate binding free energy values for protein-ligand binding in which a reference binder is gradually converted to a target binder through alchemical transformation during the simulation. The success of such simulations relies on being able to accurately sample the correct conformational phase space for each alchemical state; however, this becomes a challenge when a significant conformation change occurs between the reference and target binder-receptor complexes. Increasing the simulation time and using enhanced sampling methods can be helpful, but effects can be limited, especially when the free energy barrier between conformations is high or when the correct target complex conformation is difficult to find and maintain. Current RBFE protocols seed the reference complex structure into every alchemical window of the simulation. In our study, we describe an improved protocol in which the reference structure is seeded into the first half of the alchemical windows, and the target structure is seeded into the second half of the alchemical windows. By applying information about the relevant correct end point conformations to different simulation windows from the beginning, the need for large barrier crossings or simulation prediction of the correct structures during an alchemical simulation is in many cases obviated. In the diverse cases we examine below, the simulations yielded free energy predictions that are satisfactory as compared to experiment and superior to running the simulations utilizing the conventional protocol. The method is straightforward to implement for publicly available FEP workflows.", "journal": "Journal of chemical theory and computation", "issn": [ "1549-9626" ], "authors": [ "Junzhuo Liao", "Alina P Sergeeva", "Edward D Harder", "Lingle Wang", "Jared M Sampson", "Barry Honig", "Richard A Friesner" ], "doi": "10.1021/acs.jctc.4c00954", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331379", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1711.02832v1", "title": "High-Speed Gate Driver Using GaN HEMTs for 20-MHz Hard Switching of SiC MOSFETs", "publishedDate": "2017-11-08T05:11:17", "content": "In this paper, we investigated a gate driver using a GaN HEMT push-pull configuration for the high-frequency hard switching of a SiC power MOSFET. Low on-resistance and low input capacitance of GaN HEMTs are suitable for a high-frequency gate driver from the logic level, and robustness of SiC MOSFET with high avalanche capability is suitable for a valve transistor in power converters. Our proposed gate driver consists of digital isolators, complementary Si MOSFETs, and GaN HEMTs. The GaN HEMT push-pull stage has a high driving capability owing to its superior switching characteristics, and complementary Si MOSFETs can enhance the control signal from the digital isolator. We investigated limiting factors of the switching frequency of the proposed gate driver by focusing on each circuit component and proposed an improved driving configuration for the gate driver. As a result, 20-MHz hard switching of a SiC MOSFET was achieved using the improved gate driver with GaN HEMTs.", "doi": null, "authors": [ "Takafumi Okuda", "Takashi Hikihara" ], "journal": null, "tags": [ "eess.SP" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1711.02832v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1711.02832v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331345", "title": "Cortical microstructural alterations in different stages of Parkinson's disease.", "content": "To explore the cortical microstructural alterations in Parkinson's disease (PD) at different stages. 149 PD patients and 76 healthy controls were included. PD patients were divided into early stage PD (EPD) (Hoehn-Yahr stage ≤ 2) and moderate-to-late stage PD (MLPD) (Hoehn-Yahr stage ≥ 2.5) according to their Hoehn-Yahr stages. All participants underwent two-shell diffusion MRI and the images were fitted to Neurite Orientation Dispersion and Density Imaging (NODDI) model to obtain the neurite density index (NDI) and orientation dispersion index (ODI) to reflect the cortical microstructure. We used gray matter-based spatial statistics method to compare the voxel-wise cortical NODDI metrics between groups. Partial correlation was used to correlate the NODDI metrics and global composite outcome in PD patients. Compared with healthy controls, EPD patients showed lower ODI in widespread regions, covering bilateral frontal, temporal, parietal and occipital cortices, as well as regional lower NDI in bilateral cingulate and frontal lobes. Compared with healthy controls, MLPD patients showed lower ODI and NDI in more widespread regions. Compared with EPD patients, MLPD patients showed lower ODI in bilateral temporal, parietal and occipital cortices, where the ODI values were negatively correlated with global composite outcome in PD patients. PD patients showed widespread cortical microstructural degeneration, characterized by reduced neurite density and orientation dispersion, and the cortical neuritic microstructure exhibit progressive degeneration during the progression of PD.", "journal": "Brain imaging and behavior", "issn": [ "1931-7565" ], "authors": [ "Xueqin Bai", "Tao Guo", "Xiaojun Guan", "Cheng Zhou", "Jingjing Wu", "Haoting Wu", "Xiaocao Liu", "Chengqing Wu", "Jingwen Chen", "Jiaqi Wen", "Jianmei Qin", "Sijia Tan", "Xiaojie DuanMu", "Luyan Gu", "Ting Gao", "Peiyu Huang", "Baorong Zhang", "Xiaojun Xu", "Xiangwu Zheng", "Minming Zhang" ], "doi": "10.1007/s11682-024-00931-5", "publishedDate": "2024-09-12T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331345", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/1i9f", "title": "STRUCTURAL CHARACTERIZATION OF THE COMPLEX OF THE REV RESPONSE ELEMENT RNA WITH A SELECTED PEPTIDE", "content": "Structural characterization of the complex of the Rev response element RNA with a selected peptide. - Zhang Q, Harada K, Cho HS, Frankel A, Wemmer DE Chem Biol (8) 511-20 (2001)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/1i9f_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/1i9f", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1, 2 ], "score": 3.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4evu", "title": "Crystal structure of C-terminal domain of putative periplasmic protein ydgH from S. enterica", "content": "Structural and functional characterization of DUF1471 domains of Salmonella proteins SrfN, YdgH/SssB, and YahO. - Michalska K, Cui H, Xu X, Brown RN, Cort JR, Heffron F, Nakayasu ES, Savchenko A, Adkins JN, Joachimiak A, Program for the Characterization of Secreted Effector Proteins (PCSEP), Midwest Center for Structural Genomics (MCSG) PLoS One (9) e101787 (2014)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4evu_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4evu", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/6jic", "title": "Identification and Characterization of a carboxypeptidase inhibitor from Lycium barbarum", "content": "Identification and characterization of a wolfberry carboxypeptidase inhibitor from Lycium barbarum. - Tan WL, Wong KH, Huang JY, Tay SV, Wang SJ Food Chem (351) 129338 (2021)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/6jic_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/6jic", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2knp", "title": "Isolation and characterization of peptides from Momordica cochinchinensis seeds.", "content": "Isolation and characterization of peptides from Momordica cochinchinensis seeds. - Daly NL, Chan L J Nat Prod (72) 1453-8 (2009)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2knp_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2knp", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2k3c", "title": "Structural and Functional Characterization of TM IX of the NHE1 Isoform of the Na+/H+ Exchanger", "content": "Structural and functional characterization of transmembrane segment IX of the NHE1 isoform of the Na+/H+ exchanger. - Reddy T, Ding J, Li X, Sykes BD, Fliegel L, Rainey JK J Biol Chem (283) 22018-30 (2008)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2k3c_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2k3c", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331411", "title": "Unraveling the adsorption-limited hydrogen oxidation reaction at palladium surface via in situ electron microscopy.", "content": "Palladium (Pd) catalysts have been extensively studied for the direct synthesis of H", "journal": "Proceedings of the National Academy of Sciences of the United States of America", "issn": [ "1091-6490" ], "authors": [ "Yukun Liu", "Kunmo Koo", "Zugang Mao", "Xianbiao Fu", "Xiaobing Hu", "Vinayak P Dravid" ], "doi": "10.1073/pnas.2408277121", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331411", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.15174v1", "title": "A Guideline for Silicon Carbide MOSFET Thermal Characterization based on Source-Drain Voltage", "publishedDate": "2022-11-28T09:34:45", "content": "Thermal transient measurement based on source-drain voltage is a standard method to characterize thermal properties of silicon semiconductors but is doubtful to be directly applied to silicon carbide (SiC) devices. To evaluate its feasibility and limitations, this paper conducts a comprehensive investigation into its accuracy, resolution, and stability towards yielding the structure information of SiC MOSFET using the source-drain voltage as the temperature sensitive electrical parameter. The whole characterization process involves two main procedures and associated key testing parameters, such as gate voltages, sensing and heating currents, etc. Their impacts on both the static and dynamic performances are also investigated with the aim of providing a guideline for conducting a reproducible thermal transient measurement for SiC MOSFETs.", "doi": null, "authors": [ "Yi Zhang", "Yichi Zhang", "Zhiliang Xu", "Zhongxu Wang", "Hon Wong", "Zhebie Lu", "Antonio Caruso" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.15174v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.15174v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331343", "title": "Detection of Shiga toxin-producing Escherichia coli in dairy cows: genetic characterization and inhibition of adherence by catlle anti-STEC antibodies to HEp-2 cell.", "content": "Shiga toxin-producing Escherichia coli (STEC) is a zoonotic pathogen associated with severe disease. Cattle are recognized as the primary animal reservoir of STEC. This study reports the occurrence and characterization of STEC from dairy cows and evaluates the inhibition of adherence by catlle anti-STEC antibodies to the HEp-2 cell. From 151 samples, 30% (n = 45) were positive for stx by PCR screening (25.21% of dairy cows and 46.8% of growing calves). From these positive samples, 17 STEC isolates were characterized. In dairy cows, 3 out of 17 samples carried stx2, 3 out of 17 possessed stx1, and 2 out of 17 carried stx1/stx2. In growing cows, 8 out of 17 samples carried stx1 and 1 out of 17 carried stx1/stx2. Other virulence factors such as ehxA, saa, iha, cah, and eae were detected. The strains were typed into 3 E. coli O groups (O26, O91, and O130). The analysis of the HEp-2 adherence assays indicated that all serum from both cattle categories presented high levels of inhibition of adherence. Considering the severity of the symptoms caused by STEC in humans, searching for factors influencing the colonization of STEC in cattle would help identify strategies to avoid transmission and STEC infection.", "journal": "Veterinary research communications", "issn": [ "1573-7446" ], "authors": [ "Rocío Colello", "M Victoria Vélez", "Marcelo Rodríguez", "Ariel Rogé", "Analía I Etcheverría", "Nora Lía Padola" ], "doi": "10.1007/s11259-024-10557-z", "publishedDate": "2024-09-21T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331343", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2311.07029v1", "title": "Accurate Time-segmented Loss Model for SiC MOSFETs in Electro-thermal Multi-Rate Simulation", "publishedDate": "2023-11-13T02:28:11", "content": "Compared with silicon (Si) power devices, Silicon carbide (SiC) devices have the advantages of fast switching speed and low on-resistance. However, the effects of non-ideal characteristics of SiC MOSFETs and stray parameters (especially parasitic inductance) on switching losses need to be further evaluated. In this paper, a transient loss model based on SiC MOSFET and SiC Schottky barrier diode (SBD) switching pairs is proposed. The transient process analysis is simplified by time segmentation of the transient process of power switching devices. The electro-thermal simulation calculates the junction temperature and updates the temperature-related parameters with the proposed loss model and the thermal network model. A multi-rate data exchange strategy is proposed to solve the problem of disparity in timescales between circuit simulation and thermal network simulation. The CREE CMF20120D SiC MOSFET device is used for the experimental verification. The experimental results verify the accuracy of the model which provides guidance for the circuit design of SiC MOSFETs. All the parameters of the loss model can be extracted from the datasheet, which is practical in power electronics design.", "doi": null, "authors": [ "Jialin Zheng", "Zhengming Zhao", "Han Xu", "Weicheng Liu", "Yangbin Zeng" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2311.07029v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2311.07029v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331330", "title": "Production, Characterization, Kinetics, and Thermodynamics Analysis of Amyloglucosidase from Fungal Consortium.", "content": "The current study aimed to produce an amyloglucosidase enzyme from the fungal consortium. The best amylolytic fungal consortia were identified as Alternaria alternata and Aspergillus niger through the 18S rDNA technique. Fermentation kinetics and various nutritional and cultural parameters were analyzed. Maximum production was obtained in M4 media, pH 5.5, 30 °C, and 4 mL inoculum at 150 rpm after 72 h of incubation. Along with that, sodium nitrate at 2.5%, maltose, beef extract 1%, zinc sulfate (0.1%), and Tween 80 (0.1%) supported the maximum amyloglucosidase production. Amyloglucosidase was partially purified up to 1.6 purification fold with a specific activity of 1.84 Umg", "journal": "Applied biochemistry and biotechnology", "issn": [ "1559-0291" ], "authors": [ "Imran Ali", "Roheena Abdullah", "Asifa Saleem", "Kinza Nisar", "Afshan Kaleem", "Mehwish Iqtedar", "Irfana Iqbal", "Xiaoming Chen" ], "doi": "10.1007/s12010-024-05067-2", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331330", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2201.03821v1", "title": "Dipole Scattering at the Interface: The Origin of Low Mobility observed in SiC MOSFETs", "publishedDate": "2022-01-11T07:59:48", "content": "In this work, the origin of the low free electron mobility in SiC MOSFETs is investigated using the scattering theory of two-dimensional electron gases. We first establish that neither phonon scattering nor Coulomb scattering can be the cause of the low observed mobility in SiC MOSFETs; we establish this fact by comparing the theoretically calculated mobility considering these effects with experimental observations. By considering the threshold voltages and the effective field dependence of the mobility in SiC MOSFETs, it is concluded that the scattering centers of the dominant mechanism are electrically neutral and exhibit a short-range scattering potential. By considering charge distribution around a neutral defect at the interface, it is established that an electric dipole induced by the defect can act as a short-range scattering potential. We then calculate the mobility in SiC MOSFETs assuming that there exist a high density of dipoles at the interface. The calculated dipole-scattering-limited mobility shows a similar dependence on the effective field dependence to that observed in experimental results. Thus, we conclude that scattering induced by a high density of electric dipoles at the interface is dominant cause of the low mobility in SiC MOSFETs.", "doi": "10.1063/5.0086172", "authors": [ "Tetsuo Hatakeyama", "Hirohisa Hirai", "Mitsuru Simetani", "Dai Okamoto", "Mitsuo Okamoto", "Shinsuke Harada" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "16pages, 3 figures", "pdf_url": "http://arxiv.org/pdf/2201.03821v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2201.03821v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331193", "title": "Exploring the heterogeneity of interstitial cells of Cajal and their properties in gastrointestinal mesenchymal tumors applying single-cell RNA sequencing analysis.", "content": "Gastrointestinal mesenchymal stromal tumors (GISTs) are a group of intramural tumors that exhibit a wide range of morphologies. Dysfunction or loss of interstitial cells of Cajal (ICCs) is correlated with the disorders of gastrointestinal motility. At present, the characterization and molecular mechanisms underlying the role of ICCs in GIST are still not clear.", "journal": "Discover oncology", "issn": [ "2730-6011" ], "authors": [ "Yongjun Zhu", "Rui Zhang", "Shipai Zhang", "Haijun Hu" ], "doi": "10.1007/s12672-024-01372-8", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331193", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.05580v1", "title": "Power Cycling Test Bench for Accelerated Life Testing for Reliability Assessment of SiC-MOSFET in Extreme Offshore Environment", "publishedDate": "2020-01-15T22:21:05", "content": "The reliability of power semiconductor switches is important when considering their vital role in power electronic converters for downhole subsea applications. Respect to technology advancements in material sciences, power MOSFETs with wide band gap materials have been proposed such as silicon carbide (SiC) and gallium nitride (GaN) as an alternative to existing silicon (Si) based MOSFETs and IGBTs. However, reliability analysis should be performed before substituting SiC-MOSFETs in the place of existing Si-MOSFETs and IGBTs. Due to costly equipment of experimental test setup for accelerated life test, a good reliable and precise simulation-based test bench should be used to test the life test procedure before implementing actual hardware. Therefore, this paper introduces a power cycle (PC) test bench for accelerated life testing for reliability assessment of SiC-MOSFET in harsh offshore environment. The introduced test bench is a simulation-based of power switch in SimScape and LTspice and has been validated with datasheet of 1.2 kV SiC-MOSFET, CAS300M12BM2 by CREE. Preliminary hardware circuits are also shown for further experimental tests. The captured data from the Device-Under-Test (DUT) in different ambient temperatures are envisioned and provide critical information about the failure mechanisms and lifetime characteristics of power devices. The provided lifetime characteristics data of SiC-MOSFET can be used to statistically estimate the Remaining-Useful-Lifetime (RUL) of component in a real application such as downhole motor drives.", "doi": null, "authors": [ "Shiva Geraei", "Saeed Hasanpour Aghdam" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": "9 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2001.05580v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.05580v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331189", "title": "Epidemiology, genetic characterization and population structure analysis of lumpy skin disease virus from North India.", "content": "Lumpy skin disease (LSD) is a transboundary, viral disease of cattle with a significant economic impact on the livestock industry. This study describes the epidemiological investigations of outbreaks of LSD that occurred in 2022 in three Indian states viz., Haryana, Himachal Pradesh and Rajasthan and the genetic characterization of Lumpy skin disease viruses (LSDVs). Also, the population structure analysis of LSDVs was carried out. Out of 138 scab samples tested from suspected cattle for LSDV, 106 were found positive. Of these, nine representative scab samples were further genetically characterized. Phylogenetic analysis based on the P32 and EEV gene sequences depicted that the LSDV strains of the present study had nucleotide identity of 100% and 99.10-99.45%, respectively with the LSDV/2019 field strains of India. Multiple sequence alignment of the EEV glycoprotein gene sequences revealed nucleotide polymorphisms at three positions viz., G178A, G253A and A459G in circulating LSDV/2022 field strains. Based on the median joining network analysis of the EEV gene, 12 haplotypes were identified among the LSDV populations. Population structure analysis corresponding to the EEV gene revealed high haplotype (0.8486 ± 0.026) and low nucleotide diversities (0.00636 ± 0.0006) and negative values for neutrality indices, indicating a high number of closely related haplotypes and the studied population may have undergone a recent expansion. The findings will help in understanding the distribution and dynamics of LSDV populations, which will prove pivotal in designing and implementing effective management and control strategies.", "journal": "Tropical animal health and production", "issn": [ "1573-7438" ], "authors": [ "Pallavi Moudgil", "Ramesh Kumar", "Punit Jhandai", "Sameer Kamboj", "Khushbu Bishnoi", "Kushal Grakh", "Renu Gupta", "Rajesh Khurana", "Naresh Jindal" ], "doi": "10.1007/s11250-024-04102-y", "publishedDate": "2024-09-11T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331189", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2404.13463v1", "title": "Time-Gated Optical Spectroscopy of Field-Effect Stimulated Recombination via Interfacial Point Defects in Fully-Processed Silicon Carbide Power MOSFETs", "publishedDate": "2024-04-20T20:42:53", "content": "Fully-processed SiC power metal-oxide-semiconductor field-effect transistors (MOSFETs) emit light during switching of the gate terminal, while both drain and source terminals are grounded. The emitted photons are caused by defect-assisted recombination of electrons and holes at the 4H-SiC/SiO$_2$ interface and can be detected through the SiC substrate. Here, we present time-gated spectroscopic characterization of these interfacial point defects. Unlike in previous studies, the devices were opened in such a way that the drain-contact remained electrically active. A separate examination of the photons emitted at the rising and falling transitions of the gate-source voltage enabled the extraction of two different spectral components. One of these components consists of a single transition with phonon replicas of a local vibrational mode (LVM) with an astonishingly high energy of 220 meV $\\unicode{x2013}$ well above the highest phonon modes in 4H-SiC and SiO$_2$ of 120 meV and 137 meV, respectively. Based on a quantum mechanical model, we successfully fitted its emission spectrum and assigned it to donor-acceptor pair recombination involving a carbon cluster-like defect. Other transitions were assigned to EH$_{6/7}$-assisted, EK$_2$-D, and nitrogen-aluminum donor-acceptor pair recombination. Due to the relevance of these defects in the operation of SiC MOSFETs, these novel insights will contribute to improved reliability and performance of these devices.", "doi": "10.1103/PhysRevApplied.22.024075", "authors": [ "Maximilian W. Feil", "Magdalena Weger", "Hans Reisinger", "Thomas Aichinger", "André Kabakow", "Dominic Waldhör", "Andreas C. Jakowetz", "Sven Prigann", "Gregor Pobegen", "Wolfgang Gustin", "Michael Waltl", "Michel Bockstedte", "Tibor Grasser" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "18 pages, 12 figures", "pdf_url": "http://arxiv.org/pdf/2404.13463v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2404.13463v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331177", "title": "Combining SiO", "content": "Cadmium (Cd) pollution in water and soil seriously threatens human health. Biochar and nanomaterials have high potential for solving the cadmium pollution problem due to their abundant pores and high specific surface area. Here, the preparation of the composite material SiO", "journal": "Environmental geochemistry and health", "issn": [ "1573-2983" ], "authors": [ "Shirui Peng", "Jing Liu", "Guofei Pan", "Yan Qin", "Zhixing Yang", "Xiaomu Yang", "Minghua Gu", "Zhiqiang Zhu", "Yanyan Wei" ], "doi": "10.1007/s10653-024-02243-5", "publishedDate": "2024-09-17T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331177", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2107.10408v1", "title": "Temperature dependence of on-state inter-terminal capacitances (Cgd and Cgs) of SiC MOSFETs and frequency limitations of their measurements", "publishedDate": "2021-07-22T00:35:44", "content": "Inter-terminal capacitances (ITCs) have major influence on the dynamic performance of power SiC MOSFETs. Knowledge of the exact values for the ITCs is required in order to perform accurate and predictive compact model simulations of their dynamic performance. Since commercial SiC MOSFETs are capable of operating in a wide range of temperatures, it is important to know the values of ITCs in the whole temperature range of operation. Direct measurements of the ITCs with standard equipment is possible only at low current levels (i.e. in the off-state (Vgs < Vth) for Vds > 0 V), however their values in the on-state (Vgs>Vth) also influence the MOSFETs switching performance. In this work, ITCs of a planar SiC MOSFET in the on-state are studied by the means of a calibrated TCAD model, revealing substantial temperature dependence in the range of 300-450 K. In the first approximation, this temperature dependence of the ITCs can be explained by a weaker temperature dependence of the MOSFET channel resistance in comparison to its JFET and epitaxial layer resistances. In addition, it is shown that at high frequencies stray inductances of the TO-247-3 package result in a change of the extracted values of the on-state ITCs. This effect is already notable at 1 MHz.", "doi": null, "authors": [ "Alexander Tsibizov", "Roger Stark", "Ulrike Grossner" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "5 pages, 5 figures, accepted to VIRTUAL ISSUE ON SIC 2020 (The 13th\n European Conference on Silicon Carbide and Related Materials (ECSCRM\n 2020-2021))", "pdf_url": "http://arxiv.org/pdf/2107.10408v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2107.10408v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331087", "title": "Effect of bioceramic inclusions on gel-cast aliphatic polymer membranes for bone tissue engineering applications: An in vitro study.", "content": "Polylactic acid (PLA) has been extensively used in tissue engineering. However, poor mechanical properties and low cell affinity have limited its pertinence in load bearing bone tissue regeneration (BTR) devices.", "journal": "Bio-medical materials and engineering", "issn": [ "1878-3619" ], "authors": [ "Vasudev Vivekanand Nayak", "Edmara T P Bergamo", "Vijayavenkataraman Sanjairaj", "Rakesh Kumar Behera", "Nikhil Gupta", "Paulo G Coelho", "Lukasz Witek" ], "doi": "10.3233/BME-240079", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331087", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1711.02832v1", "title": "High-Speed Gate Driver Using GaN HEMTs for 20-MHz Hard Switching of SiC MOSFETs", "publishedDate": "2017-11-08T05:11:17", "content": "In this paper, we investigated a gate driver using a GaN HEMT push-pull configuration for the high-frequency hard switching of a SiC power MOSFET. Low on-resistance and low input capacitance of GaN HEMTs are suitable for a high-frequency gate driver from the logic level, and robustness of SiC MOSFET with high avalanche capability is suitable for a valve transistor in power converters. Our proposed gate driver consists of digital isolators, complementary Si MOSFETs, and GaN HEMTs. The GaN HEMT push-pull stage has a high driving capability owing to its superior switching characteristics, and complementary Si MOSFETs can enhance the control signal from the digital isolator. We investigated limiting factors of the switching frequency of the proposed gate driver by focusing on each circuit component and proposed an improved driving configuration for the gate driver. As a result, 20-MHz hard switching of a SiC MOSFET was achieved using the improved gate driver with GaN HEMTs.", "doi": null, "authors": [ "Takafumi Okuda", "Takashi Hikihara" ], "journal": null, "tags": [ "eess.SP" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1711.02832v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1711.02832v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331013", "title": "Targeted synthesis of gold nanorods and characterization of their tailored surface properties using optical and X-ray spectroscopy.", "content": "In recent years, nanophotonics have had a transformative impact on harnessing energy, directing chemical reactions, and enabling novel molecular dynamics for thermodynamically intensive applications. Plasmonic nanoparticles have emerged as a tool for confining light on nanometer-length scales where regions of intense electromagnetic fields can be precisely tuned for controlled surface chemistry. We demonstrate a precision pH-driven synthesis of gold nanorods with optical resonance properties widely tunable across the near-infrared spectrum. Through controlled electrostatic interactions, we can perform selective adsorbate molecule attachment and monitor the surface transitions through spectroscopic techniques that include ground-state absorption spectrophotometry, two-dimensional X-ray absorption near-edge spectroscopy, Fourier-transform infrared spectroscopy, and surface-enhanced Raman spectroscopy. We elucidate the electronic, structural, and chemical factors that contribute to plasmon-molecule dynamics at the nanoscale with broad implications for the fields of energy, photonics, and bio-inspired materials.", "journal": "Physical chemistry chemical physics : PCCP", "issn": [ "1463-9084" ], "authors": [ "David G Schauer", "Jona Bredehoeft", "Umar Yunusa", "Ajith Pattammattel", "Hans Jakob Wörner", "Emily A Sprague-Klein" ], "doi": "10.1039/d4cp01993h", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331013", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2009.04835v1", "title": "Understanding the role of threading dislocations on 4H-SiC MOSFET breakdown under high temperature reverse bias stress", "publishedDate": "2020-09-10T13:20:41", "content": "The origin of dielectric breakdown was studied on 4H-SiC MOSFETs that failed after three months of high temperature reverse bias (HTRB) stress. A local inspection of the failed devices demonstrated the presence of a threading dislocation (TD) at the breakdown location. The nanoscale origin of the dielectric breakdown was highlighted with advanced high-spatial-resolution scanning probe microscopy (SPM) techniques. In particular, SPM revealed the conductive nature of the TD and a local increase of the minority carrier concentration close to the defect. Numerical simulations estimated a hole concentration 13 orders of magnitude larger than in the ideal 4H-SiC crystal. The hole injection in specific regions of the device explained the failure of the gate oxide under stress. In this way, the key role of the TD in the dielectric breakdown of 4H-SiC MOSFET was unambiguously demonstrated.", "doi": "10.1088/1361-6528/ab5ff6", "authors": [ "P. Fiorenza", "M. Alessandrino", "B. Carbone", "C. Di Martino", "A. Russo", "M. Saggio", "C. Venuto", "E. Zanetti", "F. Giannazzo", "F. Roccaforte" ], "journal": "Nanotechnology 31, (2020) 125203", "tags": [ "physics.app-ph", "cond-mat.mtrl-sci" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2009.04835v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2009.04835v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330976", "title": "Synthesis, Characterization and Antibacterial Activity Evaluation of CuO NPs and B-CuO NPs obtained from Livistona chinensis leaf extract.", "content": "Nanoparticles (NPs) exhibit fascinating size-dependent chemical and physical characteristics that make them useful for a variety of applications. The present paper reports the green synthesis of CuO NPs and B-doped CuO NPs (B-CuO NPs) from Livistona chinensis leaf extract. Not much work has been reported on the use of the plant extract for the fabrication of NPs, particularly those of Cu and its doped counterparts. Various spectroscopic techniques were used to characterize the synthesized NPs. In the FT-IR spectra, peaks obtained at 504 cm-1 to 600 cm-1 were due to Cu-O vibrations. The energy dispersive X-ray analysis (EDX) spectra confirmed the CuO NPs' composition and B's presence inside the NPs. The peak pattern in X-ray diffraction (XRD) spectrum confirmed the crystalline and monoclinic phases of the NPs. The average crystalline size of CuO NPs and B-CuO NPs was 19.56 nm and 17.30 nm respectively. The CuO and B-CuO NPs were tested against three Gram-positive bacterial strains namely Bacillus subtilis, Micrococcus luteus, and Staphylococcus aureus and three Gram-negative Escherichia coli, Salmonella abony, and Pseudomonas aeruginosa through Agar well diffusion method and it was found that CuO NPs showed higher activity than B-CuO NPs.", "journal": "Chemistry & biodiversity", "issn": [ "1612-1880" ], "authors": [ "Ekhlakh Veg", "Azam Raza", "Smita Rai", "Swati Sharma", "Anushka Pandey", "Mohammad Imran Ahmad", "Sabeeha Jabeena", "Seema Joshi", "Tahmeena Khan" ], "doi": "10.1002/cbdv.202401596", "publishedDate": "2024-09-27T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330976", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2310.06184v2", "title": "A Brief Review of Single Event Burnout Failure Mechanisms and Design Tolerances of Silicon Carbide MOSFETs", "publishedDate": "2023-10-09T22:24:06", "content": "Radiation hardening of the MOSFET is of the highest priority for sustaining high-power systems in the space radiation environment. SiC-based power electronics are being looked at as a strong alternative for high power spaceborne power electronic systems. The SiC MOSFET has been shown to be most prone to SEB of the radiation effects. The knowledge of SiC MOSFET device degradation and failure mechanisms are reviewed. Additionally, the viability of rad-tolerant SiC MOSFET designs and the methods of SEB simulation are evaluated. A merit system is proposed to consider the performance of radiation tolerance and nominal electrical performance. Criteria needed for high-fidelity SEB simulation are also reviewed. This paper stands as a necessary analytical review to intercede the development of rad-hard power devices for space and extreme environment applications.", "doi": "10.3390/electronics13081414", "authors": [ "Christopher A. Grome", "Wei Ji" ], "journal": "Electronics 2024, 13, 1414", "tags": [ "physics.ins-det" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2310.06184v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2310.06184v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39330972", "title": "Gel-Gel Phase Separation in Clustered Poly(ethylene glycol) Hydrogel with Enhanced Hydrophobicity.", "content": "The development of hydrophobic poly(ethylene glycol) (PEG) hydrogels, which are typically hydrophilic, could significantly enhance their application as artificial extracellular matrices. In this study, we designed PEG hydrogels with enhanced hydrophobicity through gel-gel phase separation (GGPS), a phenomenon that uniquely enhances hydrophobicity under ambient conditions, and we elucidated the pivotal role of elasticity in this process. We hypothesized that increased elasticity would amplify GGPS, thereby improving the hydrophobicity and cell adhesion on PEG hydrogel surfaces, despite their inherent hydrophilicity. To test this hypothesis, we engineered dilute oligo-PEG gels via a two-step process, creating polymer networks from tetra-PEG clusters with multiple reaction points. These oligo-PEG gels exhibited significantly higher elasticity, turbidity, and shrinkage upon water immersion compared to dilute PEG gels. Detailed characterization through confocal laser scanning microscopy, rheological measurements, and cell adhesion assays revealed distinct biphasic structures, increased hydrophobicity, and enhanced cell attachability in the dilute oligo-PEG gels. Our findings confirm that elasticity is crucial for effective GGPS, providing a novel method for tailoring hydrogel properties without chemical modification. This research introduces a new paradigm for designing biomaterials with improved cell-scaffolding capabilities, offering significant potential for tissue engineering and regenerative medicine.", "journal": "ACS macro letters", "issn": [ "2161-1653" ], "authors": [ "Shohei Ishikawa", "Takashi Yasuda", "Yasuhide Iwanaga", "Takamasa Sakai" ], "doi": "10.1021/acsmacrolett.4c00448", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39330972", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2210.07417v2", "title": "Ultra-Wide Bandgap Ga$_2$O$_3$-on-SiC MOSFETs", "publishedDate": "2022-10-13T23:45:37", "content": "Ulta-wide bandgap semiconductors based on $\\beta$-Ga$_2$O$_3$ offer the potential to achieve higher power switching performance, efficiency, and lower manufacturing cost than today's wide bandgap power semiconductors. However, the most critical challenge to the commercialization of Ga$_2$O$_3$ electronics is overheating, which impacts the device's performance and reliability. We fabricated a Ga$_2$O$_3$/4H-SiC composite wafer using a fusion-bonding method. A low temperature ($\\le$ 600 $^{\\circ}$C) epitaxy and device processing approach based on low-temperature (LT) metalorganic vapor phase epitaxy is developed to grow a Ga$_2$O$_3$ epitaxial channel layer on the composite wafer and subsequently fabricate into Ga$_2$O$_3$ power MOSFETs. This LT approach is essential to preserve the structural integrity of the composite wafer. These LT-grown epitaxial Ga$_2$O$_3$ MOSFETs deliver high thermal performance (56% reduction in channel temperature), high voltage blocking capabilities up to 2.45 kV, and power figures of merit of $\\sim$ 300 MW/cm$^2$, which is a record high for any heterogeneously integrated Ga$_2$O$_3$ devices reported to date. This work is the first realization of multi-kilovolt homoepitaxial Ga$_2$O$_3$ power MOSFETs fabricated on a composite substrate with high heat transfer performance which delivers state-of-the-art power density values while running much cooler than those on native substrates. Thermal characterization and modeling results reveal that a Ga$_2$O$_3$/diamond composite wafer with a reduced Ga$_2$O$_3$ thickness ($\\sim$ 1 $\\mu$m) and thinner bonding interlayer ($<$ 10 nm) can reduce the device thermal impedance to a level lower than today's GaN-on-SiC power switches.", "doi": null, "authors": [ "Yiwen Song", "Arkka Bhattacharyya", "Anwarul Karim", "Daniel Shoemaker", "Hsien-Lien Huang", "Saurav Roy", "Craig McGray", "Jacob H. Leach", "Jinwoo Hwang", "Sriram Krishnamoorthy", "Sukwon Choi" ], "journal": null, "tags": [ "cond-mat.mtrl-sci", "physics.app-ph" ], "comments": "17 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2210.07417v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2210.07417v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7bna", "title": "ANISOTROPIC THERMAL-PARAMETER REFINEMENT OF THE DNA DODECAMER CGCGAATTCGCG BY THE SEGMENTED RIGID-BODY METHOD", "content": "Anisotropic Thermal-Parameter Refinement of the DNA Dodecamer CGCGAATTCGCG by the Segmented Rigid-Body Method - Holbrook SR, Dickerson RE, Kim S-H Acta Crystallogr., B (41) 255-262 (1985)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7bna_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7bna", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7wkj", "title": "A COVID-19 T-cell response detection method based on a newly identified human CD8+ T cell epitope from SARS-CoV-2-Hubei Province, 2021.", "content": "A COVID-19 T-Cell Response Detection Method Based on a Newly Identified Human CD8+ T Cell Epitope from SARS-CoV-2 - Hubei Province, China, 2021. - Zhang J, Lu D, Li M, Liu MS, Yao SJ, Zhan JB, Liu J, Gao GF China CDC Wkly (4) 83-87 (2022)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7wkj_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7wkj", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2mor", "title": "A tensor-free method for the structural and dynamical refinement of proteins using residual dipolar couplings", "content": "A tensor-free method for the structural and dynamical refinement of proteins using residual dipolar couplings. - Camilloni C, Vendruscolo M J Phys Chem B (119) 653-61 (2015)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2mor_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2mor", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2nr2", "title": "The MUMO (minimal under-restraining minimal over-restraining) method for the determination of native states ensembles of proteins", "content": "The MUMO (minimal under-restraining minimal over-restraining) method for the determination of native state ensembles of proteins. - Richter B, Gsponer J, Varnai P, Salvatella X, Vendruscolo M J Biomol NMR (37) 117-35 (2007)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2nr2_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2nr2", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h56", "title": "Crystal structure of endothiapepsin PF_cryo3 in complex with AC39729 at 100 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h56_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h56", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h5w", "title": "Crystal structure of endothiapepsin PF_RT2 in complex with JFD03909 at 296 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h5w_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h5w", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h58", "title": "Crystal structure of endothiapepsin PF_RT2 in complex with AC39729 at 296 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h58_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h58", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h5u", "title": "Crystal structure of endothiapepsin PF_cryo3 in complex with JFD03909 at 100 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h5u_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h5u", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331462", "title": "Ablation of Supraventricular Arrhythmias With as Low as Reasonably Achievable X-Ray exposure (AALARA): Results of Prospective, Observational, Multicenter, Multinational, Open-Label Registry Study on Real World Data Using Routine Ensite 3D Mapping During SVT Ablation.", "content": "The reduction of fluoroscopic exposure during catheter ablation of supraventricular arrhythmias is widely adopted by experienced electrophysiology physicians with a relatively short learning curve and is becoming the standard of care in many parts of the world. While observational studies in the United States and some parts of Western Europe have evaluated the minimal fluoroscopic approach, there are scarce real-world data for this technique and the generalizability of outcomes in other economic regions.", "journal": "Pacing and clinical electrophysiology : PACE", "issn": [ "1540-8159" ], "authors": [ "Mohammad Amin", "Ayan Abdrakhmanov", "Evgeniy Kropotkin", "Vasil Traykov", "Zoltán Salló", "László Gellér", "Faizel Lorgat", "Oleg Sapelnikov", "Ondrej Toman", "Khalid Al-Muti", "Mohamed Aljaabari", "Adrian Bystriansky", "László Környei", "Nebojša Mujović", "Stefanie Simons", "Nándor Szegedi" ], "doi": "10.1111/pace.15075", "publishedDate": "2024-09-04T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331462", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2310.06184v2", "title": "A Brief Review of Single Event Burnout Failure Mechanisms and Design Tolerances of Silicon Carbide MOSFETs", "publishedDate": "2023-10-09T22:24:06", "content": "Radiation hardening of the MOSFET is of the highest priority for sustaining high-power systems in the space radiation environment. SiC-based power electronics are being looked at as a strong alternative for high power spaceborne power electronic systems. The SiC MOSFET has been shown to be most prone to SEB of the radiation effects. The knowledge of SiC MOSFET device degradation and failure mechanisms are reviewed. Additionally, the viability of rad-tolerant SiC MOSFET designs and the methods of SEB simulation are evaluated. A merit system is proposed to consider the performance of radiation tolerance and nominal electrical performance. Criteria needed for high-fidelity SEB simulation are also reviewed. This paper stands as a necessary analytical review to intercede the development of rad-hard power devices for space and extreme environment applications.", "doi": "10.3390/electronics13081414", "authors": [ "Christopher A. Grome", "Wei Ji" ], "journal": "Electronics 2024, 13, 1414", "tags": [ "physics.ins-det" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2310.06184v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2310.06184v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331444", "title": "Silicone sling surgery for congenital ptosis: Tarsal tunnel technique.", "content": "This was a prospective, interventional, comparative study conducted on patients with congenital simple severe ptosis. A novel method of silicone rod fixation to the tarsus (tarsal tunnel technique, group 1) was done compared with a conventional technique of silicone rod fixation (suture fixation technique, group 2) in frontalis suspension surgery. A total of 30 patients were randomized into two groups of 15 patients each. Postoperatively, MRD1, vertical palpebral aperture, and eyelid fold height were comparable in both groups till the last follow-up with stability in eyelid position. Patient satisfaction scores showed similar results with good-fair satisfaction grading in 13 patients in group 1 and 11 patients in group 2 at 6 months follow-up. No significant complications occurred in either group. Tarsal tunnel fixation of silicone rods is a novel method in sling surgery with optimal cosmetic and function outcomes. Further long-term studies are needed to validate the results of the technique.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Neelam Pushker", "Manish Mahabir", "Sahil Agrawal", "Mandeep Singh Bajaj" ], "doi": "10.4103/IJO.IJO_2766_23", "publishedDate": "2024-03-10T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331444", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1810.11452v1", "title": "Analysis and Development of SiC MOSFET Boost Converter as Solar PV Pre-regulator", "publishedDate": "2018-10-24T07:55:26", "content": "Renewable energy source such as photovoltaic (PV) cell generates power from the sun light by converting solar power to electrical power with no moving parts and less maintenance. A single photovoltaic cell produces voltage of low level. In order to boost up the voltage, a DC-DC boost converter is used. In order to use this DC-DC converter for high voltage and high frequency applications, Silicon Carbide (SiC) device is most preferred because of larger current carrying capability, higher voltage blocking capability, high operating temperature and less static and dynamic losses than the traditional silicon (Si) power switches. In the proposed work, the static and dynamic characteristics of SiC MOSFET for different temperatures are observed. A SiC MOSFET based boost converter is investigated which is powered by PV source. This DC - DC converter is controlled using a Pulse-Width Method (PWM) and the duty cycle d is calculated for tracking the maximum power point using incremental conductance algorithm of the PV systems implemented in FPGA. Simulation studies are carried out in MATLAB/SIMULINK.A prototype of the SiC converter is built and the results are verified experimentally. The performance parameters of the proposed converter such as output voltage ripple input current ripple and losses are computed and it is compared with the classical silicon (Si) MOSFET converter.", "doi": null, "authors": [ "A. Bharathi sankar", "R. Seyezhai" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mes-hall", "eess.SP", "physics.ins-det" ], "comments": "24 pages", "pdf_url": "http://arxiv.org/pdf/1810.11452v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1810.11452v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331443", "title": "Evaluation of antioxidant status of lens epithelial cells in cataract patients.", "content": "The main factor that causes cataracts is the increased oxidative stress and imbalance of an antioxidant defense mechanism, which leads to significant changes in the lens microarchitecture. Senile cataract is the most common type of acquired cataracts due to aging.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Kranti Santosh Sorte Gawali", "Avinash Namdeo Jadhao", "Trupti Diwan Ramteke", "Neelam Jayant Patil", "Harshal Sahare" ], "doi": "10.4103/IJO.IJO_19_24", "publishedDate": "2024-04-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331443", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.15174v1", "title": "A Guideline for Silicon Carbide MOSFET Thermal Characterization based on Source-Drain Voltage", "publishedDate": "2022-11-28T09:34:45", "content": "Thermal transient measurement based on source-drain voltage is a standard method to characterize thermal properties of silicon semiconductors but is doubtful to be directly applied to silicon carbide (SiC) devices. To evaluate its feasibility and limitations, this paper conducts a comprehensive investigation into its accuracy, resolution, and stability towards yielding the structure information of SiC MOSFET using the source-drain voltage as the temperature sensitive electrical parameter. The whole characterization process involves two main procedures and associated key testing parameters, such as gate voltages, sensing and heating currents, etc. Their impacts on both the static and dynamic performances are also investigated with the aim of providing a guideline for conducting a reproducible thermal transient measurement for SiC MOSFETs.", "doi": null, "authors": [ "Yi Zhang", "Yichi Zhang", "Zhiliang Xu", "Zhongxu Wang", "Hon Wong", "Zhebie Lu", "Antonio Caruso" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.15174v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.15174v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331437", "title": "Analysis of anthropometric measurements taken from the periocular region in healthy young individuals with different somatotypes.", "content": "Anthropometric parameters related with the periocular region (PR) have gained great importance with the optical technology used in the treatment of eye defects. They have also become important parameters that determine the limits of treatment in aesthetic surgery procedures in PR and the treatment of orbital diseases. The aim of this study was to examine the relationship of PR measurements with somatotype.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Sıdıka Karaketir", "Demet Şencan", "Serdar Çolakoğlu", "Deniz Şenol" ], "doi": "10.4103/IJO.IJO_2836_23", "publishedDate": "2024-02-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331437", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2311.07029v1", "title": "Accurate Time-segmented Loss Model for SiC MOSFETs in Electro-thermal Multi-Rate Simulation", "publishedDate": "2023-11-13T02:28:11", "content": "Compared with silicon (Si) power devices, Silicon carbide (SiC) devices have the advantages of fast switching speed and low on-resistance. However, the effects of non-ideal characteristics of SiC MOSFETs and stray parameters (especially parasitic inductance) on switching losses need to be further evaluated. In this paper, a transient loss model based on SiC MOSFET and SiC Schottky barrier diode (SBD) switching pairs is proposed. The transient process analysis is simplified by time segmentation of the transient process of power switching devices. The electro-thermal simulation calculates the junction temperature and updates the temperature-related parameters with the proposed loss model and the thermal network model. A multi-rate data exchange strategy is proposed to solve the problem of disparity in timescales between circuit simulation and thermal network simulation. The CREE CMF20120D SiC MOSFET device is used for the experimental verification. The experimental results verify the accuracy of the model which provides guidance for the circuit design of SiC MOSFETs. All the parameters of the loss model can be extracted from the datasheet, which is practical in power electronics design.", "doi": null, "authors": [ "Jialin Zheng", "Zhengming Zhao", "Han Xu", "Weicheng Liu", "Yangbin Zeng" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2311.07029v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2311.07029v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2201.03821v1", "title": "Dipole Scattering at the Interface: The Origin of Low Mobility observed in SiC MOSFETs", "publishedDate": "2022-01-11T07:59:48", "content": "In this work, the origin of the low free electron mobility in SiC MOSFETs is investigated using the scattering theory of two-dimensional electron gases. We first establish that neither phonon scattering nor Coulomb scattering can be the cause of the low observed mobility in SiC MOSFETs; we establish this fact by comparing the theoretically calculated mobility considering these effects with experimental observations. By considering the threshold voltages and the effective field dependence of the mobility in SiC MOSFETs, it is concluded that the scattering centers of the dominant mechanism are electrically neutral and exhibit a short-range scattering potential. By considering charge distribution around a neutral defect at the interface, it is established that an electric dipole induced by the defect can act as a short-range scattering potential. We then calculate the mobility in SiC MOSFETs assuming that there exist a high density of dipoles at the interface. The calculated dipole-scattering-limited mobility shows a similar dependence on the effective field dependence to that observed in experimental results. Thus, we conclude that scattering induced by a high density of electric dipoles at the interface is dominant cause of the low mobility in SiC MOSFETs.", "doi": "10.1063/5.0086172", "authors": [ "Tetsuo Hatakeyama", "Hirohisa Hirai", "Mitsuru Simetani", "Dai Okamoto", "Mitsuo Okamoto", "Shinsuke Harada" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "16pages, 3 figures", "pdf_url": "http://arxiv.org/pdf/2201.03821v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2201.03821v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331418", "title": "Hydrophobic ZIF-8 nanoparticles loaded on chitosan for improved methanol adsorption from fermented wine.", "content": "Metal-organic frameworks (MOFs) have great potential for the adsorption of minor molecular alcohols in the vapor phase. However, the drawbacks of powdered MOFs, including low recyclability and problematic separation, limit their application in fermented wine. Chitosan (CS) is a low-cost, eco-friendly, moldable matrix used in the food industry. In this study, a novel CS@ZIF-8 adsorbent with excellent microporous surface area was successfully synthesized by incorporating hydrophobic ZIF-8 into CS. The results showed that CS@ZIF-8 beads had a high adsorption affinity for methanol at a Zn", "journal": "Journal of food science", "issn": [ "1750-3841" ], "authors": [ "Mibin Lin", "Jia Sha", "Zhonghao Zhu", "Penghui Ye", "Kai Zhao", "Kaijun Xiao" ], "doi": "10.1111/1750-3841.17397", "publishedDate": "2024-08-31T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331418", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2212.13211v1", "title": "Adaptive Control of Surge Impedance for Electric Motors in Motor Drive Systems", "publishedDate": "2022-12-26T16:40:55", "content": "This article studies the possibility of controlling the surge impedance of the electric motor in motor drives. The existing solution to suppress (or eliminate) the reflected wave impact on the motor insulation run by a Si-IGBT or SiC-MOSFET-based drive is to use either a sinewave filter or dv/dt filter. The alternative solution suggested in this article is to implement a high-bandwidth electronic circuit at the end of the cable or at the motor terminals to match the surge impedance of the cable and motor. The high-frequency voltage ringing due to the reflected waves in motor drives is around 1 MHz, depending on the cable parameters and the length of the cable. In the proposed method, the electronic circuit can quickly detect the dv/dt rise and fall edges and adjust the electronic circuit equivalent impedance when pulses arrive the motor terminals. Thus, the cable and motor surge impedances can be matched over a short time to prevent reflected waves. As a result, the leakage currents passing through the ball bearing and overvoltage stress on the motor insulation can be suppressed significantly.", "doi": null, "authors": [ "Fahmid Sadeque", "Fariba Fateh", "JiangBiao He", "Behrooz Mirafzal" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2212.13211v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2212.13211v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331382", "title": "Modular Synthesis of Azidobicyclo[2.1.1]hexanes via (3 + 2) Annulation of α-Substituted Vinyl Azides and Bicyclo[1.1.0]butanes.", "content": "Here, we present a mild and rapid method to access azidobicyclo[2.1.1]hexanes via formal (3 + 2) cycloaddition of α-substituted vinyl azides and bicyclo[1.1.0]butanes under Lewis acid catalysis. A wide range of α-substituted vinyl azides were tolerated under mild conditions. Notably, the resulting cycloadducts could be transformed into structurally attractive 3-azabicyclo[3.1.1]heptenes through microwave-promoted rearrangement. The utilities were highlighted by copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition of tertiary alkyl azide and further transformation of the azide and ketone groups.", "journal": "The Journal of organic chemistry", "issn": [ "1520-6904" ], "authors": [ "Sai Hu", "Yuhong Gao", "Yuming Pan", "Dongshun Ni", "Li Deng" ], "doi": "10.1021/acs.joc.4c01920", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331382", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2407.13370v2", "title": "Complementary two dimensional carrier profiles of 4H-SiC MOSFETs by Scanning Spreading Resistance Microscopy and Scanning Capacitance Microscopy", "publishedDate": "2024-07-18T10:26:15", "content": "This paper reports the results presented in an invited poster during the International Conference on Silicon Carbide and Related Materials (ICSCRM) 2023 held in Sorrento, Italy. The suitability of scanning probe methods based on atomic force microscopy (AFM) measurements is explored to investigate with high spatial resolution the elementary cell of 4H-SiC power MOSFETs. The two-dimensional (2D) cross-sectional maps demonstrated a high spatial resolution of about 5 nm using the SSRM capabilities. Furthermore, the SCM capabilities enabled visualizing the fluctuations of charge carrier concentration across the different parts of the MOSFETs elementary cell.", "doi": null, "authors": [ "Patrick Fiorenza", "Marco Zignale", "Edoardo. Zanetti", "Mario S. Alessandrino", "Beatrice Carbone", "Alfio Guarnera", "Mario Saggio", "Filippo Giannazzo", "Fabrizio Roccaforte" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mtrl-sci" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2407.13370v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2407.13370v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331381", "title": "Liquid Atmospheric Pressure Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Using a Commercial Ion Source and Orbitrap Mass Analyzer.", "content": "A liquid atmospheric pressure-matrix-assisted laser desorption/ionization (LAP-MALDI) method has been developed and applied to a commercial AP-MALDI source on a hybrid orbitrap mass analyzer. It is shown that electrospray ionization (ESI)-like mass spectra of a range of peptides and proteins can be acquired by LAP-MALDI mass spectrometry (MS) as previously demonstrated on a homemade LAP-MALDI-Q-TOF setup but without the need of any modification to the commercially available MS equipment used. Multiply charged peptide ions were recorded with a resolution of around 100,000 and a mass accuracy of less than 5 ppm. The higher resolution and mass accuracy of the orbitrap analyzer compared with previously employed Q-TOF instrumentation provided high confidence in bacterial proteoform and species identification by top-down protein analysis.", "journal": "Analytical chemistry", "issn": [ "1520-6882" ], "authors": [ "Bob Challen", "Lily R Adair", "Rainer Cramer" ], "doi": "10.1021/acs.analchem.4c04458", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331381", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.05580v1", "title": "Power Cycling Test Bench for Accelerated Life Testing for Reliability Assessment of SiC-MOSFET in Extreme Offshore Environment", "publishedDate": "2020-01-15T22:21:05", "content": "The reliability of power semiconductor switches is important when considering their vital role in power electronic converters for downhole subsea applications. Respect to technology advancements in material sciences, power MOSFETs with wide band gap materials have been proposed such as silicon carbide (SiC) and gallium nitride (GaN) as an alternative to existing silicon (Si) based MOSFETs and IGBTs. However, reliability analysis should be performed before substituting SiC-MOSFETs in the place of existing Si-MOSFETs and IGBTs. Due to costly equipment of experimental test setup for accelerated life test, a good reliable and precise simulation-based test bench should be used to test the life test procedure before implementing actual hardware. Therefore, this paper introduces a power cycle (PC) test bench for accelerated life testing for reliability assessment of SiC-MOSFET in harsh offshore environment. The introduced test bench is a simulation-based of power switch in SimScape and LTspice and has been validated with datasheet of 1.2 kV SiC-MOSFET, CAS300M12BM2 by CREE. Preliminary hardware circuits are also shown for further experimental tests. The captured data from the Device-Under-Test (DUT) in different ambient temperatures are envisioned and provide critical information about the failure mechanisms and lifetime characteristics of power devices. The provided lifetime characteristics data of SiC-MOSFET can be used to statistically estimate the Remaining-Useful-Lifetime (RUL) of component in a real application such as downhole motor drives.", "doi": null, "authors": [ "Shiva Geraei", "Saeed Hasanpour Aghdam" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": "9 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2001.05580v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.05580v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331379", "title": "A Method for Treating Significant Conformational Changes in Alchemical Free Energy Simulations of Protein-Ligand Binding.", "content": "Relative binding free energy (RBFE) simulation is a rigorous approach to the calculation of quantitatively accurate binding free energy values for protein-ligand binding in which a reference binder is gradually converted to a target binder through alchemical transformation during the simulation. The success of such simulations relies on being able to accurately sample the correct conformational phase space for each alchemical state; however, this becomes a challenge when a significant conformation change occurs between the reference and target binder-receptor complexes. Increasing the simulation time and using enhanced sampling methods can be helpful, but effects can be limited, especially when the free energy barrier between conformations is high or when the correct target complex conformation is difficult to find and maintain. Current RBFE protocols seed the reference complex structure into every alchemical window of the simulation. In our study, we describe an improved protocol in which the reference structure is seeded into the first half of the alchemical windows, and the target structure is seeded into the second half of the alchemical windows. By applying information about the relevant correct end point conformations to different simulation windows from the beginning, the need for large barrier crossings or simulation prediction of the correct structures during an alchemical simulation is in many cases obviated. In the diverse cases we examine below, the simulations yielded free energy predictions that are satisfactory as compared to experiment and superior to running the simulations utilizing the conventional protocol. The method is straightforward to implement for publicly available FEP workflows.", "journal": "Journal of chemical theory and computation", "issn": [ "1549-9626" ], "authors": [ "Junzhuo Liao", "Alina P Sergeeva", "Edward D Harder", "Lingle Wang", "Jared M Sampson", "Barry Honig", "Richard A Friesner" ], "doi": "10.1021/acs.jctc.4c00954", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331379", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2107.10408v1", "title": "Temperature dependence of on-state inter-terminal capacitances (Cgd and Cgs) of SiC MOSFETs and frequency limitations of their measurements", "publishedDate": "2021-07-22T00:35:44", "content": "Inter-terminal capacitances (ITCs) have major influence on the dynamic performance of power SiC MOSFETs. Knowledge of the exact values for the ITCs is required in order to perform accurate and predictive compact model simulations of their dynamic performance. Since commercial SiC MOSFETs are capable of operating in a wide range of temperatures, it is important to know the values of ITCs in the whole temperature range of operation. Direct measurements of the ITCs with standard equipment is possible only at low current levels (i.e. in the off-state (Vgs < Vth) for Vds > 0 V), however their values in the on-state (Vgs>Vth) also influence the MOSFETs switching performance. In this work, ITCs of a planar SiC MOSFET in the on-state are studied by the means of a calibrated TCAD model, revealing substantial temperature dependence in the range of 300-450 K. In the first approximation, this temperature dependence of the ITCs can be explained by a weaker temperature dependence of the MOSFET channel resistance in comparison to its JFET and epitaxial layer resistances. In addition, it is shown that at high frequencies stray inductances of the TO-247-3 package result in a change of the extracted values of the on-state ITCs. This effect is already notable at 1 MHz.", "doi": null, "authors": [ "Alexander Tsibizov", "Roger Stark", "Ulrike Grossner" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "5 pages, 5 figures, accepted to VIRTUAL ISSUE ON SIC 2020 (The 13th\n European Conference on Silicon Carbide and Related Materials (ECSCRM\n 2020-2021))", "pdf_url": "http://arxiv.org/pdf/2107.10408v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2107.10408v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331345", "title": "Cortical microstructural alterations in different stages of Parkinson's disease.", "content": "To explore the cortical microstructural alterations in Parkinson's disease (PD) at different stages. 149 PD patients and 76 healthy controls were included. PD patients were divided into early stage PD (EPD) (Hoehn-Yahr stage ≤ 2) and moderate-to-late stage PD (MLPD) (Hoehn-Yahr stage ≥ 2.5) according to their Hoehn-Yahr stages. All participants underwent two-shell diffusion MRI and the images were fitted to Neurite Orientation Dispersion and Density Imaging (NODDI) model to obtain the neurite density index (NDI) and orientation dispersion index (ODI) to reflect the cortical microstructure. We used gray matter-based spatial statistics method to compare the voxel-wise cortical NODDI metrics between groups. Partial correlation was used to correlate the NODDI metrics and global composite outcome in PD patients. Compared with healthy controls, EPD patients showed lower ODI in widespread regions, covering bilateral frontal, temporal, parietal and occipital cortices, as well as regional lower NDI in bilateral cingulate and frontal lobes. Compared with healthy controls, MLPD patients showed lower ODI and NDI in more widespread regions. Compared with EPD patients, MLPD patients showed lower ODI in bilateral temporal, parietal and occipital cortices, where the ODI values were negatively correlated with global composite outcome in PD patients. PD patients showed widespread cortical microstructural degeneration, characterized by reduced neurite density and orientation dispersion, and the cortical neuritic microstructure exhibit progressive degeneration during the progression of PD.", "journal": "Brain imaging and behavior", "issn": [ "1931-7565" ], "authors": [ "Xueqin Bai", "Tao Guo", "Xiaojun Guan", "Cheng Zhou", "Jingjing Wu", "Haoting Wu", "Xiaocao Liu", "Chengqing Wu", "Jingwen Chen", "Jiaqi Wen", "Jianmei Qin", "Sijia Tan", "Xiaojie DuanMu", "Luyan Gu", "Ting Gao", "Peiyu Huang", "Baorong Zhang", "Xiaojun Xu", "Xiangwu Zheng", "Minming Zhang" ], "doi": "10.1007/s11682-024-00931-5", "publishedDate": "2024-09-12T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331345", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1711.02832v1", "title": "High-Speed Gate Driver Using GaN HEMTs for 20-MHz Hard Switching of SiC MOSFETs", "publishedDate": "2017-11-08T05:11:17", "content": "In this paper, we investigated a gate driver using a GaN HEMT push-pull configuration for the high-frequency hard switching of a SiC power MOSFET. Low on-resistance and low input capacitance of GaN HEMTs are suitable for a high-frequency gate driver from the logic level, and robustness of SiC MOSFET with high avalanche capability is suitable for a valve transistor in power converters. Our proposed gate driver consists of digital isolators, complementary Si MOSFETs, and GaN HEMTs. The GaN HEMT push-pull stage has a high driving capability owing to its superior switching characteristics, and complementary Si MOSFETs can enhance the control signal from the digital isolator. We investigated limiting factors of the switching frequency of the proposed gate driver by focusing on each circuit component and proposed an improved driving configuration for the gate driver. As a result, 20-MHz hard switching of a SiC MOSFET was achieved using the improved gate driver with GaN HEMTs.", "doi": null, "authors": [ "Takafumi Okuda", "Takashi Hikihara" ], "journal": null, "tags": [ "eess.SP" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1711.02832v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1711.02832v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/1i9f", "title": "STRUCTURAL CHARACTERIZATION OF THE COMPLEX OF THE REV RESPONSE ELEMENT RNA WITH A SELECTED PEPTIDE", "content": "Structural characterization of the complex of the Rev response element RNA with a selected peptide. - Zhang Q, Harada K, Cho HS, Frankel A, Wemmer DE Chem Biol (8) 511-20 (2001)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/1i9f_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/1i9f", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1, 2 ], "score": 3.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4evu", "title": "Crystal structure of C-terminal domain of putative periplasmic protein ydgH from S. enterica", "content": "Structural and functional characterization of DUF1471 domains of Salmonella proteins SrfN, YdgH/SssB, and YahO. - Michalska K, Cui H, Xu X, Brown RN, Cort JR, Heffron F, Nakayasu ES, Savchenko A, Adkins JN, Joachimiak A, Program for the Characterization of Secreted Effector Proteins (PCSEP), Midwest Center for Structural Genomics (MCSG) PLoS One (9) e101787 (2014)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4evu_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4evu", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/6jic", "title": "Identification and Characterization of a carboxypeptidase inhibitor from Lycium barbarum", "content": "Identification and characterization of a wolfberry carboxypeptidase inhibitor from Lycium barbarum. - Tan WL, Wong KH, Huang JY, Tay SV, Wang SJ Food Chem (351) 129338 (2021)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/6jic_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/6jic", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2knp", "title": "Isolation and characterization of peptides from Momordica cochinchinensis seeds.", "content": "Isolation and characterization of peptides from Momordica cochinchinensis seeds. - Daly NL, Chan L J Nat Prod (72) 1453-8 (2009)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2knp_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2knp", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2k3c", "title": "Structural and Functional Characterization of TM IX of the NHE1 Isoform of the Na+/H+ Exchanger", "content": "Structural and functional characterization of transmembrane segment IX of the NHE1 isoform of the Na+/H+ exchanger. - Reddy T, Ding J, Li X, Sykes BD, Fliegel L, Rainey JK J Biol Chem (283) 22018-30 (2008)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2k3c_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2k3c", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.15174v1", "title": "A Guideline for Silicon Carbide MOSFET Thermal Characterization based on Source-Drain Voltage", "publishedDate": "2022-11-28T09:34:45", "content": "Thermal transient measurement based on source-drain voltage is a standard method to characterize thermal properties of silicon semiconductors but is doubtful to be directly applied to silicon carbide (SiC) devices. To evaluate its feasibility and limitations, this paper conducts a comprehensive investigation into its accuracy, resolution, and stability towards yielding the structure information of SiC MOSFET using the source-drain voltage as the temperature sensitive electrical parameter. The whole characterization process involves two main procedures and associated key testing parameters, such as gate voltages, sensing and heating currents, etc. Their impacts on both the static and dynamic performances are also investigated with the aim of providing a guideline for conducting a reproducible thermal transient measurement for SiC MOSFETs.", "doi": null, "authors": [ "Yi Zhang", "Yichi Zhang", "Zhiliang Xu", "Zhongxu Wang", "Hon Wong", "Zhebie Lu", "Antonio Caruso" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.15174v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.15174v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331411", "title": "Unraveling the adsorption-limited hydrogen oxidation reaction at palladium surface via in situ electron microscopy.", "content": "Palladium (Pd) catalysts have been extensively studied for the direct synthesis of H", "journal": "Proceedings of the National Academy of Sciences of the United States of America", "issn": [ "1091-6490" ], "authors": [ "Yukun Liu", "Kunmo Koo", "Zugang Mao", "Xianbiao Fu", "Xiaobing Hu", "Vinayak P Dravid" ], "doi": "10.1073/pnas.2408277121", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331411", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2311.07029v1", "title": "Accurate Time-segmented Loss Model for SiC MOSFETs in Electro-thermal Multi-Rate Simulation", "publishedDate": "2023-11-13T02:28:11", "content": "Compared with silicon (Si) power devices, Silicon carbide (SiC) devices have the advantages of fast switching speed and low on-resistance. However, the effects of non-ideal characteristics of SiC MOSFETs and stray parameters (especially parasitic inductance) on switching losses need to be further evaluated. In this paper, a transient loss model based on SiC MOSFET and SiC Schottky barrier diode (SBD) switching pairs is proposed. The transient process analysis is simplified by time segmentation of the transient process of power switching devices. The electro-thermal simulation calculates the junction temperature and updates the temperature-related parameters with the proposed loss model and the thermal network model. A multi-rate data exchange strategy is proposed to solve the problem of disparity in timescales between circuit simulation and thermal network simulation. The CREE CMF20120D SiC MOSFET device is used for the experimental verification. The experimental results verify the accuracy of the model which provides guidance for the circuit design of SiC MOSFETs. All the parameters of the loss model can be extracted from the datasheet, which is practical in power electronics design.", "doi": null, "authors": [ "Jialin Zheng", "Zhengming Zhao", "Han Xu", "Weicheng Liu", "Yangbin Zeng" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2311.07029v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2311.07029v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331343", "title": "Detection of Shiga toxin-producing Escherichia coli in dairy cows: genetic characterization and inhibition of adherence by catlle anti-STEC antibodies to HEp-2 cell.", "content": "Shiga toxin-producing Escherichia coli (STEC) is a zoonotic pathogen associated with severe disease. Cattle are recognized as the primary animal reservoir of STEC. This study reports the occurrence and characterization of STEC from dairy cows and evaluates the inhibition of adherence by catlle anti-STEC antibodies to the HEp-2 cell. From 151 samples, 30% (n = 45) were positive for stx by PCR screening (25.21% of dairy cows and 46.8% of growing calves). From these positive samples, 17 STEC isolates were characterized. In dairy cows, 3 out of 17 samples carried stx2, 3 out of 17 possessed stx1, and 2 out of 17 carried stx1/stx2. In growing cows, 8 out of 17 samples carried stx1 and 1 out of 17 carried stx1/stx2. Other virulence factors such as ehxA, saa, iha, cah, and eae were detected. The strains were typed into 3 E. coli O groups (O26, O91, and O130). The analysis of the HEp-2 adherence assays indicated that all serum from both cattle categories presented high levels of inhibition of adherence. Considering the severity of the symptoms caused by STEC in humans, searching for factors influencing the colonization of STEC in cattle would help identify strategies to avoid transmission and STEC infection.", "journal": "Veterinary research communications", "issn": [ "1573-7446" ], "authors": [ "Rocío Colello", "M Victoria Vélez", "Marcelo Rodríguez", "Ariel Rogé", "Analía I Etcheverría", "Nora Lía Padola" ], "doi": "10.1007/s11259-024-10557-z", "publishedDate": "2024-09-21T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331343", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2201.03821v1", "title": "Dipole Scattering at the Interface: The Origin of Low Mobility observed in SiC MOSFETs", "publishedDate": "2022-01-11T07:59:48", "content": "In this work, the origin of the low free electron mobility in SiC MOSFETs is investigated using the scattering theory of two-dimensional electron gases. We first establish that neither phonon scattering nor Coulomb scattering can be the cause of the low observed mobility in SiC MOSFETs; we establish this fact by comparing the theoretically calculated mobility considering these effects with experimental observations. By considering the threshold voltages and the effective field dependence of the mobility in SiC MOSFETs, it is concluded that the scattering centers of the dominant mechanism are electrically neutral and exhibit a short-range scattering potential. By considering charge distribution around a neutral defect at the interface, it is established that an electric dipole induced by the defect can act as a short-range scattering potential. We then calculate the mobility in SiC MOSFETs assuming that there exist a high density of dipoles at the interface. The calculated dipole-scattering-limited mobility shows a similar dependence on the effective field dependence to that observed in experimental results. Thus, we conclude that scattering induced by a high density of electric dipoles at the interface is dominant cause of the low mobility in SiC MOSFETs.", "doi": "10.1063/5.0086172", "authors": [ "Tetsuo Hatakeyama", "Hirohisa Hirai", "Mitsuru Simetani", "Dai Okamoto", "Mitsuo Okamoto", "Shinsuke Harada" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "16pages, 3 figures", "pdf_url": "http://arxiv.org/pdf/2201.03821v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2201.03821v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331330", "title": "Production, Characterization, Kinetics, and Thermodynamics Analysis of Amyloglucosidase from Fungal Consortium.", "content": "The current study aimed to produce an amyloglucosidase enzyme from the fungal consortium. The best amylolytic fungal consortia were identified as Alternaria alternata and Aspergillus niger through the 18S rDNA technique. Fermentation kinetics and various nutritional and cultural parameters were analyzed. Maximum production was obtained in M4 media, pH 5.5, 30 °C, and 4 mL inoculum at 150 rpm after 72 h of incubation. Along with that, sodium nitrate at 2.5%, maltose, beef extract 1%, zinc sulfate (0.1%), and Tween 80 (0.1%) supported the maximum amyloglucosidase production. Amyloglucosidase was partially purified up to 1.6 purification fold with a specific activity of 1.84 Umg", "journal": "Applied biochemistry and biotechnology", "issn": [ "1559-0291" ], "authors": [ "Imran Ali", "Roheena Abdullah", "Asifa Saleem", "Kinza Nisar", "Afshan Kaleem", "Mehwish Iqtedar", "Irfana Iqbal", "Xiaoming Chen" ], "doi": "10.1007/s12010-024-05067-2", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331330", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.05580v1", "title": "Power Cycling Test Bench for Accelerated Life Testing for Reliability Assessment of SiC-MOSFET in Extreme Offshore Environment", "publishedDate": "2020-01-15T22:21:05", "content": "The reliability of power semiconductor switches is important when considering their vital role in power electronic converters for downhole subsea applications. Respect to technology advancements in material sciences, power MOSFETs with wide band gap materials have been proposed such as silicon carbide (SiC) and gallium nitride (GaN) as an alternative to existing silicon (Si) based MOSFETs and IGBTs. However, reliability analysis should be performed before substituting SiC-MOSFETs in the place of existing Si-MOSFETs and IGBTs. Due to costly equipment of experimental test setup for accelerated life test, a good reliable and precise simulation-based test bench should be used to test the life test procedure before implementing actual hardware. Therefore, this paper introduces a power cycle (PC) test bench for accelerated life testing for reliability assessment of SiC-MOSFET in harsh offshore environment. The introduced test bench is a simulation-based of power switch in SimScape and LTspice and has been validated with datasheet of 1.2 kV SiC-MOSFET, CAS300M12BM2 by CREE. Preliminary hardware circuits are also shown for further experimental tests. The captured data from the Device-Under-Test (DUT) in different ambient temperatures are envisioned and provide critical information about the failure mechanisms and lifetime characteristics of power devices. The provided lifetime characteristics data of SiC-MOSFET can be used to statistically estimate the Remaining-Useful-Lifetime (RUL) of component in a real application such as downhole motor drives.", "doi": null, "authors": [ "Shiva Geraei", "Saeed Hasanpour Aghdam" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": "9 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2001.05580v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.05580v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331193", "title": "Exploring the heterogeneity of interstitial cells of Cajal and their properties in gastrointestinal mesenchymal tumors applying single-cell RNA sequencing analysis.", "content": "Gastrointestinal mesenchymal stromal tumors (GISTs) are a group of intramural tumors that exhibit a wide range of morphologies. Dysfunction or loss of interstitial cells of Cajal (ICCs) is correlated with the disorders of gastrointestinal motility. At present, the characterization and molecular mechanisms underlying the role of ICCs in GIST are still not clear.", "journal": "Discover oncology", "issn": [ "2730-6011" ], "authors": [ "Yongjun Zhu", "Rui Zhang", "Shipai Zhang", "Haijun Hu" ], "doi": "10.1007/s12672-024-01372-8", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331193", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2404.13463v1", "title": "Time-Gated Optical Spectroscopy of Field-Effect Stimulated Recombination via Interfacial Point Defects in Fully-Processed Silicon Carbide Power MOSFETs", "publishedDate": "2024-04-20T20:42:53", "content": "Fully-processed SiC power metal-oxide-semiconductor field-effect transistors (MOSFETs) emit light during switching of the gate terminal, while both drain and source terminals are grounded. The emitted photons are caused by defect-assisted recombination of electrons and holes at the 4H-SiC/SiO$_2$ interface and can be detected through the SiC substrate. Here, we present time-gated spectroscopic characterization of these interfacial point defects. Unlike in previous studies, the devices were opened in such a way that the drain-contact remained electrically active. A separate examination of the photons emitted at the rising and falling transitions of the gate-source voltage enabled the extraction of two different spectral components. One of these components consists of a single transition with phonon replicas of a local vibrational mode (LVM) with an astonishingly high energy of 220 meV $\\unicode{x2013}$ well above the highest phonon modes in 4H-SiC and SiO$_2$ of 120 meV and 137 meV, respectively. Based on a quantum mechanical model, we successfully fitted its emission spectrum and assigned it to donor-acceptor pair recombination involving a carbon cluster-like defect. Other transitions were assigned to EH$_{6/7}$-assisted, EK$_2$-D, and nitrogen-aluminum donor-acceptor pair recombination. Due to the relevance of these defects in the operation of SiC MOSFETs, these novel insights will contribute to improved reliability and performance of these devices.", "doi": "10.1103/PhysRevApplied.22.024075", "authors": [ "Maximilian W. Feil", "Magdalena Weger", "Hans Reisinger", "Thomas Aichinger", "André Kabakow", "Dominic Waldhör", "Andreas C. Jakowetz", "Sven Prigann", "Gregor Pobegen", "Wolfgang Gustin", "Michael Waltl", "Michel Bockstedte", "Tibor Grasser" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "18 pages, 12 figures", "pdf_url": "http://arxiv.org/pdf/2404.13463v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2404.13463v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331189", "title": "Epidemiology, genetic characterization and population structure analysis of lumpy skin disease virus from North India.", "content": "Lumpy skin disease (LSD) is a transboundary, viral disease of cattle with a significant economic impact on the livestock industry. This study describes the epidemiological investigations of outbreaks of LSD that occurred in 2022 in three Indian states viz., Haryana, Himachal Pradesh and Rajasthan and the genetic characterization of Lumpy skin disease viruses (LSDVs). Also, the population structure analysis of LSDVs was carried out. Out of 138 scab samples tested from suspected cattle for LSDV, 106 were found positive. Of these, nine representative scab samples were further genetically characterized. Phylogenetic analysis based on the P32 and EEV gene sequences depicted that the LSDV strains of the present study had nucleotide identity of 100% and 99.10-99.45%, respectively with the LSDV/2019 field strains of India. Multiple sequence alignment of the EEV glycoprotein gene sequences revealed nucleotide polymorphisms at three positions viz., G178A, G253A and A459G in circulating LSDV/2022 field strains. Based on the median joining network analysis of the EEV gene, 12 haplotypes were identified among the LSDV populations. Population structure analysis corresponding to the EEV gene revealed high haplotype (0.8486 ± 0.026) and low nucleotide diversities (0.00636 ± 0.0006) and negative values for neutrality indices, indicating a high number of closely related haplotypes and the studied population may have undergone a recent expansion. The findings will help in understanding the distribution and dynamics of LSDV populations, which will prove pivotal in designing and implementing effective management and control strategies.", "journal": "Tropical animal health and production", "issn": [ "1573-7438" ], "authors": [ "Pallavi Moudgil", "Ramesh Kumar", "Punit Jhandai", "Sameer Kamboj", "Khushbu Bishnoi", "Kushal Grakh", "Renu Gupta", "Rajesh Khurana", "Naresh Jindal" ], "doi": "10.1007/s11250-024-04102-y", "publishedDate": "2024-09-11T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331189", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2107.10408v1", "title": "Temperature dependence of on-state inter-terminal capacitances (Cgd and Cgs) of SiC MOSFETs and frequency limitations of their measurements", "publishedDate": "2021-07-22T00:35:44", "content": "Inter-terminal capacitances (ITCs) have major influence on the dynamic performance of power SiC MOSFETs. Knowledge of the exact values for the ITCs is required in order to perform accurate and predictive compact model simulations of their dynamic performance. Since commercial SiC MOSFETs are capable of operating in a wide range of temperatures, it is important to know the values of ITCs in the whole temperature range of operation. Direct measurements of the ITCs with standard equipment is possible only at low current levels (i.e. in the off-state (Vgs < Vth) for Vds > 0 V), however their values in the on-state (Vgs>Vth) also influence the MOSFETs switching performance. In this work, ITCs of a planar SiC MOSFET in the on-state are studied by the means of a calibrated TCAD model, revealing substantial temperature dependence in the range of 300-450 K. In the first approximation, this temperature dependence of the ITCs can be explained by a weaker temperature dependence of the MOSFET channel resistance in comparison to its JFET and epitaxial layer resistances. In addition, it is shown that at high frequencies stray inductances of the TO-247-3 package result in a change of the extracted values of the on-state ITCs. This effect is already notable at 1 MHz.", "doi": null, "authors": [ "Alexander Tsibizov", "Roger Stark", "Ulrike Grossner" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "5 pages, 5 figures, accepted to VIRTUAL ISSUE ON SIC 2020 (The 13th\n European Conference on Silicon Carbide and Related Materials (ECSCRM\n 2020-2021))", "pdf_url": "http://arxiv.org/pdf/2107.10408v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2107.10408v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331177", "title": "Combining SiO", "content": "Cadmium (Cd) pollution in water and soil seriously threatens human health. Biochar and nanomaterials have high potential for solving the cadmium pollution problem due to their abundant pores and high specific surface area. Here, the preparation of the composite material SiO", "journal": "Environmental geochemistry and health", "issn": [ "1573-2983" ], "authors": [ "Shirui Peng", "Jing Liu", "Guofei Pan", "Yan Qin", "Zhixing Yang", "Xiaomu Yang", "Minghua Gu", "Zhiqiang Zhu", "Yanyan Wei" ], "doi": "10.1007/s10653-024-02243-5", "publishedDate": "2024-09-17T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331177", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1711.02832v1", "title": "High-Speed Gate Driver Using GaN HEMTs for 20-MHz Hard Switching of SiC MOSFETs", "publishedDate": "2017-11-08T05:11:17", "content": "In this paper, we investigated a gate driver using a GaN HEMT push-pull configuration for the high-frequency hard switching of a SiC power MOSFET. Low on-resistance and low input capacitance of GaN HEMTs are suitable for a high-frequency gate driver from the logic level, and robustness of SiC MOSFET with high avalanche capability is suitable for a valve transistor in power converters. Our proposed gate driver consists of digital isolators, complementary Si MOSFETs, and GaN HEMTs. The GaN HEMT push-pull stage has a high driving capability owing to its superior switching characteristics, and complementary Si MOSFETs can enhance the control signal from the digital isolator. We investigated limiting factors of the switching frequency of the proposed gate driver by focusing on each circuit component and proposed an improved driving configuration for the gate driver. As a result, 20-MHz hard switching of a SiC MOSFET was achieved using the improved gate driver with GaN HEMTs.", "doi": null, "authors": [ "Takafumi Okuda", "Takashi Hikihara" ], "journal": null, "tags": [ "eess.SP" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1711.02832v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1711.02832v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331138", "title": "The plant early recombinosome: a high security complex to break DNA during meiosis.", "content": "The formacion of numerous unpredictable DNA Double Strand Breaks (DSBs) on chromosomes iniciates meiotic recombination. In this perspective, we propose a 'multi-key lock' model to secure the risky but necesary breaks as well as a 'one per pair of cromatids' model for the topoisomerase-like early recombinosome. During meiosis, homologous chromosomes recombine at few sites of crossing-overs (COs) to ensure correct segregation. The initiation of meiotic recombination involves the formation of DNA double strand breaks (DSBs) during prophase I. Too many DSBs are dangerous for genome integrity: if these DSBs are not properly repaired, it could potentially lead to chromosomal fragmentation. Too few DSBs are also problematic: if the obligate CO cannot form between bivalents, catastrophic unequal segregation of univalents lead to the formation of sterile aneuploid spores. Research on the regulation of the formation of these necessary but risky DSBs has recently advanced in yeast, mammals and plants. DNA DSBs are created by the enzymatic activity of the early recombinosome, a topoisomerase-like complex containing SPO11. This opinion paper reviews recent insights on the regulation of the SPO11 cofactors necessary for the introduction of temporally and spatially controlled DSBs. We propose that a 'multi-key-lock' model for each subunit of the early recombinosome complex is required to secure the formation of DSBs. We also discuss the hypothetical implications that the established topoisomerase-like nature of the SPO11 core-complex can have in creating DSB in only one of the two replicated chromatids of early prophase I meiotic chromosomes. This hypothetical 'one per pair of chromatids' DSB formation model could optimize the faithful repair of the self-inflicted DSBs. Each DSB could use three potential intact homologous DNA sequences as repair template: one from the sister chromatid and the two others from the homologous chromosomes.", "journal": "Plant reproduction", "issn": [ "2194-7961" ], "authors": [ "Nahid Rafiei", "Arnaud Ronceret" ], "doi": "10.1007/s00497-024-00509-7", "publishedDate": "2024-08-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331138", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2009.04835v1", "title": "Understanding the role of threading dislocations on 4H-SiC MOSFET breakdown under high temperature reverse bias stress", "publishedDate": "2020-09-10T13:20:41", "content": "The origin of dielectric breakdown was studied on 4H-SiC MOSFETs that failed after three months of high temperature reverse bias (HTRB) stress. A local inspection of the failed devices demonstrated the presence of a threading dislocation (TD) at the breakdown location. The nanoscale origin of the dielectric breakdown was highlighted with advanced high-spatial-resolution scanning probe microscopy (SPM) techniques. In particular, SPM revealed the conductive nature of the TD and a local increase of the minority carrier concentration close to the defect. Numerical simulations estimated a hole concentration 13 orders of magnitude larger than in the ideal 4H-SiC crystal. The hole injection in specific regions of the device explained the failure of the gate oxide under stress. In this way, the key role of the TD in the dielectric breakdown of 4H-SiC MOSFET was unambiguously demonstrated.", "doi": "10.1088/1361-6528/ab5ff6", "authors": [ "P. Fiorenza", "M. Alessandrino", "B. Carbone", "C. Di Martino", "A. Russo", "M. Saggio", "C. Venuto", "E. Zanetti", "F. Giannazzo", "F. Roccaforte" ], "journal": "Nanotechnology 31, (2020) 125203", "tags": [ "physics.app-ph", "cond-mat.mtrl-sci" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2009.04835v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2009.04835v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331087", "title": "Effect of bioceramic inclusions on gel-cast aliphatic polymer membranes for bone tissue engineering applications: An in vitro study.", "content": "Polylactic acid (PLA) has been extensively used in tissue engineering. However, poor mechanical properties and low cell affinity have limited its pertinence in load bearing bone tissue regeneration (BTR) devices.", "journal": "Bio-medical materials and engineering", "issn": [ "1878-3619" ], "authors": [ "Vasudev Vivekanand Nayak", "Edmara T P Bergamo", "Vijayavenkataraman Sanjairaj", "Rakesh Kumar Behera", "Nikhil Gupta", "Paulo G Coelho", "Lukasz Witek" ], "doi": "10.3233/BME-240079", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331087", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2310.06184v2", "title": "A Brief Review of Single Event Burnout Failure Mechanisms and Design Tolerances of Silicon Carbide MOSFETs", "publishedDate": "2023-10-09T22:24:06", "content": "Radiation hardening of the MOSFET is of the highest priority for sustaining high-power systems in the space radiation environment. SiC-based power electronics are being looked at as a strong alternative for high power spaceborne power electronic systems. The SiC MOSFET has been shown to be most prone to SEB of the radiation effects. The knowledge of SiC MOSFET device degradation and failure mechanisms are reviewed. Additionally, the viability of rad-tolerant SiC MOSFET designs and the methods of SEB simulation are evaluated. A merit system is proposed to consider the performance of radiation tolerance and nominal electrical performance. Criteria needed for high-fidelity SEB simulation are also reviewed. This paper stands as a necessary analytical review to intercede the development of rad-hard power devices for space and extreme environment applications.", "doi": "10.3390/electronics13081414", "authors": [ "Christopher A. Grome", "Wei Ji" ], "journal": "Electronics 2024, 13, 1414", "tags": [ "physics.ins-det" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2310.06184v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2310.06184v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331082", "title": "Full-Incision Double-Eyelid Blepharoplasty with Selective Sensory Nerve Preservation.", "content": "Full-incision double-eyelid blepharoplasty can result in upper eyelid skin numbness postoperatively. However, few studies have examined sensory loss after eyelid surgery. We propose a novel surgical approach with selective sensory nerve preservation to prevent postoperative upper eyelid numbness.", "journal": "Aesthetic plastic surgery", "issn": [ "1432-5241" ], "authors": [ "Jing Liu", "Jinlong Huang", "Jia Liu", "Xiaodong Chen", "Gang Chen", "Jinming Wang" ], "doi": "10.1007/s00266-024-04371-w", "publishedDate": "2024-09-03T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331082", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2210.07417v2", "title": "Ultra-Wide Bandgap Ga$_2$O$_3$-on-SiC MOSFETs", "publishedDate": "2022-10-13T23:45:37", "content": "Ulta-wide bandgap semiconductors based on $\\beta$-Ga$_2$O$_3$ offer the potential to achieve higher power switching performance, efficiency, and lower manufacturing cost than today's wide bandgap power semiconductors. However, the most critical challenge to the commercialization of Ga$_2$O$_3$ electronics is overheating, which impacts the device's performance and reliability. We fabricated a Ga$_2$O$_3$/4H-SiC composite wafer using a fusion-bonding method. A low temperature ($\\le$ 600 $^{\\circ}$C) epitaxy and device processing approach based on low-temperature (LT) metalorganic vapor phase epitaxy is developed to grow a Ga$_2$O$_3$ epitaxial channel layer on the composite wafer and subsequently fabricate into Ga$_2$O$_3$ power MOSFETs. This LT approach is essential to preserve the structural integrity of the composite wafer. These LT-grown epitaxial Ga$_2$O$_3$ MOSFETs deliver high thermal performance (56% reduction in channel temperature), high voltage blocking capabilities up to 2.45 kV, and power figures of merit of $\\sim$ 300 MW/cm$^2$, which is a record high for any heterogeneously integrated Ga$_2$O$_3$ devices reported to date. This work is the first realization of multi-kilovolt homoepitaxial Ga$_2$O$_3$ power MOSFETs fabricated on a composite substrate with high heat transfer performance which delivers state-of-the-art power density values while running much cooler than those on native substrates. Thermal characterization and modeling results reveal that a Ga$_2$O$_3$/diamond composite wafer with a reduced Ga$_2$O$_3$ thickness ($\\sim$ 1 $\\mu$m) and thinner bonding interlayer ($<$ 10 nm) can reduce the device thermal impedance to a level lower than today's GaN-on-SiC power switches.", "doi": null, "authors": [ "Yiwen Song", "Arkka Bhattacharyya", "Anwarul Karim", "Daniel Shoemaker", "Hsien-Lien Huang", "Saurav Roy", "Craig McGray", "Jacob H. Leach", "Jinwoo Hwang", "Sriram Krishnamoorthy", "Sukwon Choi" ], "journal": null, "tags": [ "cond-mat.mtrl-sci", "physics.app-ph" ], "comments": "17 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2210.07417v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2210.07417v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4d0q", "title": "Hyaluronan Binding Module of the Streptococcal Pneumoniae Hyaluronate Lyase", "content": "Conformational analysis of the Streptococcus pneumoniae hyaluronate lyase and characterization of its hyaluronan-specific carbohydrate-binding module. - Suits MDL, Pluvinage B, Law A, Liu Y, Palma AS, Chai W, Feizi T, Boraston AB J Biol Chem (289) 27264-27277 (2014)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4d0q_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4d0q", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4am5", "title": "Bacterioferritin from Blastochloris viridis", "content": "Structural characterization of bacterioferritin from Blastochloris viridis. - Wahlgren WY, Omran H, von Stetten D, Royant A, van der Post S, Katona G PLoS One (7) e46992 (2012)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4am5_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4am5", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331462", "title": "Ablation of Supraventricular Arrhythmias With as Low as Reasonably Achievable X-Ray exposure (AALARA): Results of Prospective, Observational, Multicenter, Multinational, Open-Label Registry Study on Real World Data Using Routine Ensite 3D Mapping During SVT Ablation.", "content": "The reduction of fluoroscopic exposure during catheter ablation of supraventricular arrhythmias is widely adopted by experienced electrophysiology physicians with a relatively short learning curve and is becoming the standard of care in many parts of the world. While observational studies in the United States and some parts of Western Europe have evaluated the minimal fluoroscopic approach, there are scarce real-world data for this technique and the generalizability of outcomes in other economic regions.", "journal": "Pacing and clinical electrophysiology : PACE", "issn": [ "1540-8159" ], "authors": [ "Mohammad Amin", "Ayan Abdrakhmanov", "Evgeniy Kropotkin", "Vasil Traykov", "Zoltán Salló", "László Gellér", "Faizel Lorgat", "Oleg Sapelnikov", "Ondrej Toman", "Khalid Al-Muti", "Mohamed Aljaabari", "Adrian Bystriansky", "László Környei", "Nebojša Mujović", "Stefanie Simons", "Nándor Szegedi" ], "doi": "10.1111/pace.15075", "publishedDate": "2024-09-04T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331462", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.15174v1", "title": "A Guideline for Silicon Carbide MOSFET Thermal Characterization based on Source-Drain Voltage", "publishedDate": "2022-11-28T09:34:45", "content": "Thermal transient measurement based on source-drain voltage is a standard method to characterize thermal properties of silicon semiconductors but is doubtful to be directly applied to silicon carbide (SiC) devices. To evaluate its feasibility and limitations, this paper conducts a comprehensive investigation into its accuracy, resolution, and stability towards yielding the structure information of SiC MOSFET using the source-drain voltage as the temperature sensitive electrical parameter. The whole characterization process involves two main procedures and associated key testing parameters, such as gate voltages, sensing and heating currents, etc. Their impacts on both the static and dynamic performances are also investigated with the aim of providing a guideline for conducting a reproducible thermal transient measurement for SiC MOSFETs.", "doi": null, "authors": [ "Yi Zhang", "Yichi Zhang", "Zhiliang Xu", "Zhongxu Wang", "Hon Wong", "Zhebie Lu", "Antonio Caruso" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.15174v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.15174v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331444", "title": "Silicone sling surgery for congenital ptosis: Tarsal tunnel technique.", "content": "This was a prospective, interventional, comparative study conducted on patients with congenital simple severe ptosis. A novel method of silicone rod fixation to the tarsus (tarsal tunnel technique, group 1) was done compared with a conventional technique of silicone rod fixation (suture fixation technique, group 2) in frontalis suspension surgery. A total of 30 patients were randomized into two groups of 15 patients each. Postoperatively, MRD1, vertical palpebral aperture, and eyelid fold height were comparable in both groups till the last follow-up with stability in eyelid position. Patient satisfaction scores showed similar results with good-fair satisfaction grading in 13 patients in group 1 and 11 patients in group 2 at 6 months follow-up. No significant complications occurred in either group. Tarsal tunnel fixation of silicone rods is a novel method in sling surgery with optimal cosmetic and function outcomes. Further long-term studies are needed to validate the results of the technique.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Neelam Pushker", "Manish Mahabir", "Sahil Agrawal", "Mandeep Singh Bajaj" ], "doi": "10.4103/IJO.IJO_2766_23", "publishedDate": "2024-03-10T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331444", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2310.06184v2", "title": "A Brief Review of Single Event Burnout Failure Mechanisms and Design Tolerances of Silicon Carbide MOSFETs", "publishedDate": "2023-10-09T22:24:06", "content": "Radiation hardening of the MOSFET is of the highest priority for sustaining high-power systems in the space radiation environment. SiC-based power electronics are being looked at as a strong alternative for high power spaceborne power electronic systems. The SiC MOSFET has been shown to be most prone to SEB of the radiation effects. The knowledge of SiC MOSFET device degradation and failure mechanisms are reviewed. Additionally, the viability of rad-tolerant SiC MOSFET designs and the methods of SEB simulation are evaluated. A merit system is proposed to consider the performance of radiation tolerance and nominal electrical performance. Criteria needed for high-fidelity SEB simulation are also reviewed. This paper stands as a necessary analytical review to intercede the development of rad-hard power devices for space and extreme environment applications.", "doi": "10.3390/electronics13081414", "authors": [ "Christopher A. Grome", "Wei Ji" ], "journal": "Electronics 2024, 13, 1414", "tags": [ "physics.ins-det" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2310.06184v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2310.06184v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331443", "title": "Evaluation of antioxidant status of lens epithelial cells in cataract patients.", "content": "The main factor that causes cataracts is the increased oxidative stress and imbalance of an antioxidant defense mechanism, which leads to significant changes in the lens microarchitecture. Senile cataract is the most common type of acquired cataracts due to aging.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Kranti Santosh Sorte Gawali", "Avinash Namdeo Jadhao", "Trupti Diwan Ramteke", "Neelam Jayant Patil", "Harshal Sahare" ], "doi": "10.4103/IJO.IJO_19_24", "publishedDate": "2024-04-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331443", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1810.11452v1", "title": "Analysis and Development of SiC MOSFET Boost Converter as Solar PV Pre-regulator", "publishedDate": "2018-10-24T07:55:26", "content": "Renewable energy source such as photovoltaic (PV) cell generates power from the sun light by converting solar power to electrical power with no moving parts and less maintenance. A single photovoltaic cell produces voltage of low level. In order to boost up the voltage, a DC-DC boost converter is used. In order to use this DC-DC converter for high voltage and high frequency applications, Silicon Carbide (SiC) device is most preferred because of larger current carrying capability, higher voltage blocking capability, high operating temperature and less static and dynamic losses than the traditional silicon (Si) power switches. In the proposed work, the static and dynamic characteristics of SiC MOSFET for different temperatures are observed. A SiC MOSFET based boost converter is investigated which is powered by PV source. This DC - DC converter is controlled using a Pulse-Width Method (PWM) and the duty cycle d is calculated for tracking the maximum power point using incremental conductance algorithm of the PV systems implemented in FPGA. Simulation studies are carried out in MATLAB/SIMULINK.A prototype of the SiC converter is built and the results are verified experimentally. The performance parameters of the proposed converter such as output voltage ripple input current ripple and losses are computed and it is compared with the classical silicon (Si) MOSFET converter.", "doi": null, "authors": [ "A. Bharathi sankar", "R. Seyezhai" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mes-hall", "eess.SP", "physics.ins-det" ], "comments": "24 pages", "pdf_url": "http://arxiv.org/pdf/1810.11452v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1810.11452v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331437", "title": "Analysis of anthropometric measurements taken from the periocular region in healthy young individuals with different somatotypes.", "content": "Anthropometric parameters related with the periocular region (PR) have gained great importance with the optical technology used in the treatment of eye defects. They have also become important parameters that determine the limits of treatment in aesthetic surgery procedures in PR and the treatment of orbital diseases. The aim of this study was to examine the relationship of PR measurements with somatotype.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Sıdıka Karaketir", "Demet Şencan", "Serdar Çolakoğlu", "Deniz Şenol" ], "doi": "10.4103/IJO.IJO_2836_23", "publishedDate": "2024-02-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331437", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2210.07417v2", "title": "Ultra-Wide Bandgap Ga$_2$O$_3$-on-SiC MOSFETs", "publishedDate": "2022-10-13T23:45:37", "content": "Ulta-wide bandgap semiconductors based on $\\beta$-Ga$_2$O$_3$ offer the potential to achieve higher power switching performance, efficiency, and lower manufacturing cost than today's wide bandgap power semiconductors. However, the most critical challenge to the commercialization of Ga$_2$O$_3$ electronics is overheating, which impacts the device's performance and reliability. We fabricated a Ga$_2$O$_3$/4H-SiC composite wafer using a fusion-bonding method. A low temperature ($\\le$ 600 $^{\\circ}$C) epitaxy and device processing approach based on low-temperature (LT) metalorganic vapor phase epitaxy is developed to grow a Ga$_2$O$_3$ epitaxial channel layer on the composite wafer and subsequently fabricate into Ga$_2$O$_3$ power MOSFETs. This LT approach is essential to preserve the structural integrity of the composite wafer. These LT-grown epitaxial Ga$_2$O$_3$ MOSFETs deliver high thermal performance (56% reduction in channel temperature), high voltage blocking capabilities up to 2.45 kV, and power figures of merit of $\\sim$ 300 MW/cm$^2$, which is a record high for any heterogeneously integrated Ga$_2$O$_3$ devices reported to date. This work is the first realization of multi-kilovolt homoepitaxial Ga$_2$O$_3$ power MOSFETs fabricated on a composite substrate with high heat transfer performance which delivers state-of-the-art power density values while running much cooler than those on native substrates. Thermal characterization and modeling results reveal that a Ga$_2$O$_3$/diamond composite wafer with a reduced Ga$_2$O$_3$ thickness ($\\sim$ 1 $\\mu$m) and thinner bonding interlayer ($<$ 10 nm) can reduce the device thermal impedance to a level lower than today's GaN-on-SiC power switches.", "doi": null, "authors": [ "Yiwen Song", "Arkka Bhattacharyya", "Anwarul Karim", "Daniel Shoemaker", "Hsien-Lien Huang", "Saurav Roy", "Craig McGray", "Jacob H. Leach", "Jinwoo Hwang", "Sriram Krishnamoorthy", "Sukwon Choi" ], "journal": null, "tags": [ "cond-mat.mtrl-sci", "physics.app-ph" ], "comments": "17 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2210.07417v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2210.07417v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2311.07029v1", "title": "Accurate Time-segmented Loss Model for SiC MOSFETs in Electro-thermal Multi-Rate Simulation", "publishedDate": "2023-11-13T02:28:11", "content": "Compared with silicon (Si) power devices, Silicon carbide (SiC) devices have the advantages of fast switching speed and low on-resistance. However, the effects of non-ideal characteristics of SiC MOSFETs and stray parameters (especially parasitic inductance) on switching losses need to be further evaluated. In this paper, a transient loss model based on SiC MOSFET and SiC Schottky barrier diode (SBD) switching pairs is proposed. The transient process analysis is simplified by time segmentation of the transient process of power switching devices. The electro-thermal simulation calculates the junction temperature and updates the temperature-related parameters with the proposed loss model and the thermal network model. A multi-rate data exchange strategy is proposed to solve the problem of disparity in timescales between circuit simulation and thermal network simulation. The CREE CMF20120D SiC MOSFET device is used for the experimental verification. The experimental results verify the accuracy of the model which provides guidance for the circuit design of SiC MOSFETs. All the parameters of the loss model can be extracted from the datasheet, which is practical in power electronics design.", "doi": null, "authors": [ "Jialin Zheng", "Zhengming Zhao", "Han Xu", "Weicheng Liu", "Yangbin Zeng" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2311.07029v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2311.07029v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331418", "title": "Hydrophobic ZIF-8 nanoparticles loaded on chitosan for improved methanol adsorption from fermented wine.", "content": "Metal-organic frameworks (MOFs) have great potential for the adsorption of minor molecular alcohols in the vapor phase. However, the drawbacks of powdered MOFs, including low recyclability and problematic separation, limit their application in fermented wine. Chitosan (CS) is a low-cost, eco-friendly, moldable matrix used in the food industry. In this study, a novel CS@ZIF-8 adsorbent with excellent microporous surface area was successfully synthesized by incorporating hydrophobic ZIF-8 into CS. The results showed that CS@ZIF-8 beads had a high adsorption affinity for methanol at a Zn", "journal": "Journal of food science", "issn": [ "1750-3841" ], "authors": [ "Mibin Lin", "Jia Sha", "Zhonghao Zhu", "Penghui Ye", "Kai Zhao", "Kaijun Xiao" ], "doi": "10.1111/1750-3841.17397", "publishedDate": "2024-08-31T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331418", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2201.03821v1", "title": "Dipole Scattering at the Interface: The Origin of Low Mobility observed in SiC MOSFETs", "publishedDate": "2022-01-11T07:59:48", "content": "In this work, the origin of the low free electron mobility in SiC MOSFETs is investigated using the scattering theory of two-dimensional electron gases. We first establish that neither phonon scattering nor Coulomb scattering can be the cause of the low observed mobility in SiC MOSFETs; we establish this fact by comparing the theoretically calculated mobility considering these effects with experimental observations. By considering the threshold voltages and the effective field dependence of the mobility in SiC MOSFETs, it is concluded that the scattering centers of the dominant mechanism are electrically neutral and exhibit a short-range scattering potential. By considering charge distribution around a neutral defect at the interface, it is established that an electric dipole induced by the defect can act as a short-range scattering potential. We then calculate the mobility in SiC MOSFETs assuming that there exist a high density of dipoles at the interface. The calculated dipole-scattering-limited mobility shows a similar dependence on the effective field dependence to that observed in experimental results. Thus, we conclude that scattering induced by a high density of electric dipoles at the interface is dominant cause of the low mobility in SiC MOSFETs.", "doi": "10.1063/5.0086172", "authors": [ "Tetsuo Hatakeyama", "Hirohisa Hirai", "Mitsuru Simetani", "Dai Okamoto", "Mitsuo Okamoto", "Shinsuke Harada" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "16pages, 3 figures", "pdf_url": "http://arxiv.org/pdf/2201.03821v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2201.03821v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331411", "title": "Unraveling the adsorption-limited hydrogen oxidation reaction at palladium surface via in situ electron microscopy.", "content": "Palladium (Pd) catalysts have been extensively studied for the direct synthesis of H", "journal": "Proceedings of the National Academy of Sciences of the United States of America", "issn": [ "1091-6490" ], "authors": [ "Yukun Liu", "Kunmo Koo", "Zugang Mao", "Xianbiao Fu", "Xiaobing Hu", "Vinayak P Dravid" ], "doi": "10.1073/pnas.2408277121", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331411", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2212.13211v1", "title": "Adaptive Control of Surge Impedance for Electric Motors in Motor Drive Systems", "publishedDate": "2022-12-26T16:40:55", "content": "This article studies the possibility of controlling the surge impedance of the electric motor in motor drives. The existing solution to suppress (or eliminate) the reflected wave impact on the motor insulation run by a Si-IGBT or SiC-MOSFET-based drive is to use either a sinewave filter or dv/dt filter. The alternative solution suggested in this article is to implement a high-bandwidth electronic circuit at the end of the cable or at the motor terminals to match the surge impedance of the cable and motor. The high-frequency voltage ringing due to the reflected waves in motor drives is around 1 MHz, depending on the cable parameters and the length of the cable. In the proposed method, the electronic circuit can quickly detect the dv/dt rise and fall edges and adjust the electronic circuit equivalent impedance when pulses arrive the motor terminals. Thus, the cable and motor surge impedances can be matched over a short time to prevent reflected waves. As a result, the leakage currents passing through the ball bearing and overvoltage stress on the motor insulation can be suppressed significantly.", "doi": null, "authors": [ "Fahmid Sadeque", "Fariba Fateh", "JiangBiao He", "Behrooz Mirafzal" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2212.13211v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2212.13211v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331382", "title": "Modular Synthesis of Azidobicyclo[2.1.1]hexanes via (3 + 2) Annulation of α-Substituted Vinyl Azides and Bicyclo[1.1.0]butanes.", "content": "Here, we present a mild and rapid method to access azidobicyclo[2.1.1]hexanes via formal (3 + 2) cycloaddition of α-substituted vinyl azides and bicyclo[1.1.0]butanes under Lewis acid catalysis. A wide range of α-substituted vinyl azides were tolerated under mild conditions. Notably, the resulting cycloadducts could be transformed into structurally attractive 3-azabicyclo[3.1.1]heptenes through microwave-promoted rearrangement. The utilities were highlighted by copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition of tertiary alkyl azide and further transformation of the azide and ketone groups.", "journal": "The Journal of organic chemistry", "issn": [ "1520-6904" ], "authors": [ "Sai Hu", "Yuhong Gao", "Yuming Pan", "Dongshun Ni", "Li Deng" ], "doi": "10.1021/acs.joc.4c01920", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331382", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2407.13370v2", "title": "Complementary two dimensional carrier profiles of 4H-SiC MOSFETs by Scanning Spreading Resistance Microscopy and Scanning Capacitance Microscopy", "publishedDate": "2024-07-18T10:26:15", "content": "This paper reports the results presented in an invited poster during the International Conference on Silicon Carbide and Related Materials (ICSCRM) 2023 held in Sorrento, Italy. The suitability of scanning probe methods based on atomic force microscopy (AFM) measurements is explored to investigate with high spatial resolution the elementary cell of 4H-SiC power MOSFETs. The two-dimensional (2D) cross-sectional maps demonstrated a high spatial resolution of about 5 nm using the SSRM capabilities. Furthermore, the SCM capabilities enabled visualizing the fluctuations of charge carrier concentration across the different parts of the MOSFETs elementary cell.", "doi": null, "authors": [ "Patrick Fiorenza", "Marco Zignale", "Edoardo. Zanetti", "Mario S. Alessandrino", "Beatrice Carbone", "Alfio Guarnera", "Mario Saggio", "Filippo Giannazzo", "Fabrizio Roccaforte" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mtrl-sci" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2407.13370v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2407.13370v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331381", "title": "Liquid Atmospheric Pressure Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Using a Commercial Ion Source and Orbitrap Mass Analyzer.", "content": "A liquid atmospheric pressure-matrix-assisted laser desorption/ionization (LAP-MALDI) method has been developed and applied to a commercial AP-MALDI source on a hybrid orbitrap mass analyzer. It is shown that electrospray ionization (ESI)-like mass spectra of a range of peptides and proteins can be acquired by LAP-MALDI mass spectrometry (MS) as previously demonstrated on a homemade LAP-MALDI-Q-TOF setup but without the need of any modification to the commercially available MS equipment used. Multiply charged peptide ions were recorded with a resolution of around 100,000 and a mass accuracy of less than 5 ppm. The higher resolution and mass accuracy of the orbitrap analyzer compared with previously employed Q-TOF instrumentation provided high confidence in bacterial proteoform and species identification by top-down protein analysis.", "journal": "Analytical chemistry", "issn": [ "1520-6882" ], "authors": [ "Bob Challen", "Lily R Adair", "Rainer Cramer" ], "doi": "10.1021/acs.analchem.4c04458", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331381", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.05580v1", "title": "Power Cycling Test Bench for Accelerated Life Testing for Reliability Assessment of SiC-MOSFET in Extreme Offshore Environment", "publishedDate": "2020-01-15T22:21:05", "content": "The reliability of power semiconductor switches is important when considering their vital role in power electronic converters for downhole subsea applications. Respect to technology advancements in material sciences, power MOSFETs with wide band gap materials have been proposed such as silicon carbide (SiC) and gallium nitride (GaN) as an alternative to existing silicon (Si) based MOSFETs and IGBTs. However, reliability analysis should be performed before substituting SiC-MOSFETs in the place of existing Si-MOSFETs and IGBTs. Due to costly equipment of experimental test setup for accelerated life test, a good reliable and precise simulation-based test bench should be used to test the life test procedure before implementing actual hardware. Therefore, this paper introduces a power cycle (PC) test bench for accelerated life testing for reliability assessment of SiC-MOSFET in harsh offshore environment. The introduced test bench is a simulation-based of power switch in SimScape and LTspice and has been validated with datasheet of 1.2 kV SiC-MOSFET, CAS300M12BM2 by CREE. Preliminary hardware circuits are also shown for further experimental tests. The captured data from the Device-Under-Test (DUT) in different ambient temperatures are envisioned and provide critical information about the failure mechanisms and lifetime characteristics of power devices. The provided lifetime characteristics data of SiC-MOSFET can be used to statistically estimate the Remaining-Useful-Lifetime (RUL) of component in a real application such as downhole motor drives.", "doi": null, "authors": [ "Shiva Geraei", "Saeed Hasanpour Aghdam" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": "9 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2001.05580v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.05580v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331379", "title": "A Method for Treating Significant Conformational Changes in Alchemical Free Energy Simulations of Protein-Ligand Binding.", "content": "Relative binding free energy (RBFE) simulation is a rigorous approach to the calculation of quantitatively accurate binding free energy values for protein-ligand binding in which a reference binder is gradually converted to a target binder through alchemical transformation during the simulation. The success of such simulations relies on being able to accurately sample the correct conformational phase space for each alchemical state; however, this becomes a challenge when a significant conformation change occurs between the reference and target binder-receptor complexes. Increasing the simulation time and using enhanced sampling methods can be helpful, but effects can be limited, especially when the free energy barrier between conformations is high or when the correct target complex conformation is difficult to find and maintain. Current RBFE protocols seed the reference complex structure into every alchemical window of the simulation. In our study, we describe an improved protocol in which the reference structure is seeded into the first half of the alchemical windows, and the target structure is seeded into the second half of the alchemical windows. By applying information about the relevant correct end point conformations to different simulation windows from the beginning, the need for large barrier crossings or simulation prediction of the correct structures during an alchemical simulation is in many cases obviated. In the diverse cases we examine below, the simulations yielded free energy predictions that are satisfactory as compared to experiment and superior to running the simulations utilizing the conventional protocol. The method is straightforward to implement for publicly available FEP workflows.", "journal": "Journal of chemical theory and computation", "issn": [ "1549-9626" ], "authors": [ "Junzhuo Liao", "Alina P Sergeeva", "Edward D Harder", "Lingle Wang", "Jared M Sampson", "Barry Honig", "Richard A Friesner" ], "doi": "10.1021/acs.jctc.4c00954", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331379", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2404.13463v1", "title": "Time-Gated Optical Spectroscopy of Field-Effect Stimulated Recombination via Interfacial Point Defects in Fully-Processed Silicon Carbide Power MOSFETs", "publishedDate": "2024-04-20T20:42:53", "content": "Fully-processed SiC power metal-oxide-semiconductor field-effect transistors (MOSFETs) emit light during switching of the gate terminal, while both drain and source terminals are grounded. The emitted photons are caused by defect-assisted recombination of electrons and holes at the 4H-SiC/SiO$_2$ interface and can be detected through the SiC substrate. Here, we present time-gated spectroscopic characterization of these interfacial point defects. Unlike in previous studies, the devices were opened in such a way that the drain-contact remained electrically active. A separate examination of the photons emitted at the rising and falling transitions of the gate-source voltage enabled the extraction of two different spectral components. One of these components consists of a single transition with phonon replicas of a local vibrational mode (LVM) with an astonishingly high energy of 220 meV $\\unicode{x2013}$ well above the highest phonon modes in 4H-SiC and SiO$_2$ of 120 meV and 137 meV, respectively. Based on a quantum mechanical model, we successfully fitted its emission spectrum and assigned it to donor-acceptor pair recombination involving a carbon cluster-like defect. Other transitions were assigned to EH$_{6/7}$-assisted, EK$_2$-D, and nitrogen-aluminum donor-acceptor pair recombination. Due to the relevance of these defects in the operation of SiC MOSFETs, these novel insights will contribute to improved reliability and performance of these devices.", "doi": "10.1103/PhysRevApplied.22.024075", "authors": [ "Maximilian W. Feil", "Magdalena Weger", "Hans Reisinger", "Thomas Aichinger", "André Kabakow", "Dominic Waldhör", "Andreas C. Jakowetz", "Sven Prigann", "Gregor Pobegen", "Wolfgang Gustin", "Michael Waltl", "Michel Bockstedte", "Tibor Grasser" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "18 pages, 12 figures", "pdf_url": "http://arxiv.org/pdf/2404.13463v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2404.13463v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7bna", "title": "ANISOTROPIC THERMAL-PARAMETER REFINEMENT OF THE DNA DODECAMER CGCGAATTCGCG BY THE SEGMENTED RIGID-BODY METHOD", "content": "Anisotropic Thermal-Parameter Refinement of the DNA Dodecamer CGCGAATTCGCG by the Segmented Rigid-Body Method - Holbrook SR, Dickerson RE, Kim S-H Acta Crystallogr., B (41) 255-262 (1985)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7bna_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7bna", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7wkj", "title": "A COVID-19 T-cell response detection method based on a newly identified human CD8+ T cell epitope from SARS-CoV-2-Hubei Province, 2021.", "content": "A COVID-19 T-Cell Response Detection Method Based on a Newly Identified Human CD8+ T Cell Epitope from SARS-CoV-2 - Hubei Province, China, 2021. - Zhang J, Lu D, Li M, Liu MS, Yao SJ, Zhan JB, Liu J, Gao GF China CDC Wkly (4) 83-87 (2022)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7wkj_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7wkj", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2mor", "title": "A tensor-free method for the structural and dynamical refinement of proteins using residual dipolar couplings", "content": "A tensor-free method for the structural and dynamical refinement of proteins using residual dipolar couplings. - Camilloni C, Vendruscolo M J Phys Chem B (119) 653-61 (2015)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2mor_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2mor", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2nr2", "title": "The MUMO (minimal under-restraining minimal over-restraining) method for the determination of native states ensembles of proteins", "content": "The MUMO (minimal under-restraining minimal over-restraining) method for the determination of native state ensembles of proteins. - Richter B, Gsponer J, Varnai P, Salvatella X, Vendruscolo M J Biomol NMR (37) 117-35 (2007)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2nr2_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2nr2", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h56", "title": "Crystal structure of endothiapepsin PF_cryo3 in complex with AC39729 at 100 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h56_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h56", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h5w", "title": "Crystal structure of endothiapepsin PF_RT2 in complex with JFD03909 at 296 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h5w_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h5w", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h58", "title": "Crystal structure of endothiapepsin PF_RT2 in complex with AC39729 at 296 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h58_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h58", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h5u", "title": "Crystal structure of endothiapepsin PF_cryo3 in complex with JFD03909 at 100 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h5u_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h5u", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.00799v1", "title": "Practical Phase Retrieval Using Double Deep Image Priors", "publishedDate": "2022-11-02T00:37:51", "content": "Phase retrieval (PR) concerns the recovery of complex phases from complex magnitudes. We identify the connection between the difficulty level and the number and variety of symmetries in PR problems. We focus on the most difficult far-field PR (FFPR), and propose a novel method using double deep image priors. In realistic evaluation, our method outperforms all competing methods by large margins. As a single-instance method, our method requires no training data and minimal hyperparameter tuning, and hence enjoys good practicality.", "doi": null, "authors": [ "Zhong Zhuang", "David Yang", "Felix Hofmann", "David Barmherzig", "Ju Sun" ], "journal": null, "tags": [ "cs.CV", "cs.LG", "eess.IV" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.00799v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.00799v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331462", "title": "Ablation of Supraventricular Arrhythmias With as Low as Reasonably Achievable X-Ray exposure (AALARA): Results of Prospective, Observational, Multicenter, Multinational, Open-Label Registry Study on Real World Data Using Routine Ensite 3D Mapping During SVT Ablation.", "content": "The reduction of fluoroscopic exposure during catheter ablation of supraventricular arrhythmias is widely adopted by experienced electrophysiology physicians with a relatively short learning curve and is becoming the standard of care in many parts of the world. While observational studies in the United States and some parts of Western Europe have evaluated the minimal fluoroscopic approach, there are scarce real-world data for this technique and the generalizability of outcomes in other economic regions.", "journal": "Pacing and clinical electrophysiology : PACE", "issn": [ "1540-8159" ], "authors": [ "Mohammad Amin", "Ayan Abdrakhmanov", "Evgeniy Kropotkin", "Vasil Traykov", "Zoltán Salló", "László Gellér", "Faizel Lorgat", "Oleg Sapelnikov", "Ondrej Toman", "Khalid Al-Muti", "Mohamed Aljaabari", "Adrian Bystriansky", "László Környei", "Nebojša Mujović", "Stefanie Simons", "Nándor Szegedi" ], "doi": "10.1111/pace.15075", "publishedDate": "2024-09-04T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331462", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2003.00220v1", "title": "Effective Localization Using Double Ideal Quotient and Its Implementation", "publishedDate": "2020-02-29T09:40:12", "content": "In this paper, we propose a new method for localization of polynomial ideal, which we call \"Local Primary Algorithm\". For an ideal $I$ and a prime ideal $P$, our method computes a $P$-primary component of $I$ after checking if $P$ is associated with $I$ by using \"double ideal quotient\" $(I:(I:P))$ and its variants which give us a lot of information about localization of $I$.", "doi": "10.1007/978-3-319-99639-4_19", "authors": [ "Yuki Ishihara", "Kazuhiro Yokoyama" ], "journal": "Proc. CASC 2018, LNCS 11077, pp.272-287, Springer 2018", "tags": [ "math.AC", "cs.SC" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2003.00220v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2003.00220v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331444", "title": "Silicone sling surgery for congenital ptosis: Tarsal tunnel technique.", "content": "This was a prospective, interventional, comparative study conducted on patients with congenital simple severe ptosis. A novel method of silicone rod fixation to the tarsus (tarsal tunnel technique, group 1) was done compared with a conventional technique of silicone rod fixation (suture fixation technique, group 2) in frontalis suspension surgery. A total of 30 patients were randomized into two groups of 15 patients each. Postoperatively, MRD1, vertical palpebral aperture, and eyelid fold height were comparable in both groups till the last follow-up with stability in eyelid position. Patient satisfaction scores showed similar results with good-fair satisfaction grading in 13 patients in group 1 and 11 patients in group 2 at 6 months follow-up. No significant complications occurred in either group. Tarsal tunnel fixation of silicone rods is a novel method in sling surgery with optimal cosmetic and function outcomes. Further long-term studies are needed to validate the results of the technique.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Neelam Pushker", "Manish Mahabir", "Sahil Agrawal", "Mandeep Singh Bajaj" ], "doi": "10.4103/IJO.IJO_2766_23", "publishedDate": "2024-03-10T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331444", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1901.09753v1", "title": "On maximum of Gaussian process with unique maximum point of its variance", "publishedDate": "2019-01-28T15:54:44", "content": "Gaussian random processes which variances reach theirs maximum values at unique points are considered. Exact asymptotic behaviors of probabilities of large absolute maximums of theirs trajectories have been evaluated using Double Sum Method under the widest possible conditions.", "doi": null, "authors": [ "E. Hashorva", "S. Kobelkov", "V. I. Piterbarg" ], "journal": null, "tags": [ "math.PR" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1901.09753v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1901.09753v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331443", "title": "Evaluation of antioxidant status of lens epithelial cells in cataract patients.", "content": "The main factor that causes cataracts is the increased oxidative stress and imbalance of an antioxidant defense mechanism, which leads to significant changes in the lens microarchitecture. Senile cataract is the most common type of acquired cataracts due to aging.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Kranti Santosh Sorte Gawali", "Avinash Namdeo Jadhao", "Trupti Diwan Ramteke", "Neelam Jayant Patil", "Harshal Sahare" ], "doi": "10.4103/IJO.IJO_19_24", "publishedDate": "2024-04-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331443", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1904.05563v1", "title": "On maximum of Gaussian random field having unique maximum point of its variance", "publishedDate": "2019-04-11T07:20:37", "content": "Gaussian random fields on Euclidean spaces whose variances reach their maximum values at unique points are considered. Exact asymptotic behaviors of probabilities of large absolute maximum of theirs trajectories have been evaluated using Double Sum Method under the widest possible conditions.", "doi": null, "authors": [ "Sergey G. Kobelkov", "Vladimir I. Piterbarg" ], "journal": null, "tags": [ "math.PR" ], "comments": "19 pages", "pdf_url": "http://arxiv.org/pdf/1904.05563v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1904.05563v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331437", "title": "Analysis of anthropometric measurements taken from the periocular region in healthy young individuals with different somatotypes.", "content": "Anthropometric parameters related with the periocular region (PR) have gained great importance with the optical technology used in the treatment of eye defects. They have also become important parameters that determine the limits of treatment in aesthetic surgery procedures in PR and the treatment of orbital diseases. The aim of this study was to examine the relationship of PR measurements with somatotype.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Sıdıka Karaketir", "Demet Şencan", "Serdar Çolakoğlu", "Deniz Şenol" ], "doi": "10.4103/IJO.IJO_2836_23", "publishedDate": "2024-02-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331437", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1910.01465v2", "title": "Reducing Overestimation Bias in Multi-Agent Domains Using Double Centralized Critics", "publishedDate": "2019-10-03T13:40:46", "content": "Many real world tasks require multiple agents to work together. Multi-agent reinforcement learning (RL) methods have been proposed in recent years to solve these tasks, but current methods often fail to efficiently learn policies. We thus investigate the presence of a common weakness in single-agent RL, namely value function overestimation bias, in the multi-agent setting. Based on our findings, we propose an approach that reduces this bias by using double centralized critics. We evaluate it on six mixed cooperative-competitive tasks, showing a significant advantage over current methods. Finally, we investigate the application of multi-agent methods to high-dimensional robotic tasks and show that our approach can be used to learn decentralized policies in this domain.", "doi": null, "authors": [ "Johannes Ackermann", "Volker Gabler", "Takayuki Osa", "Masashi Sugiyama" ], "journal": null, "tags": [ "cs.LG", "cs.AI", "cs.MA", "stat.ML" ], "comments": "Accepted for the Deep RL Workshop at NeurIPS 2019; Changes for v2:\n Changed Figures 3,4, due to an error in the implementation of MATD3. Please\n refer to this version for fair evaluation", "pdf_url": "http://arxiv.org/pdf/1910.01465v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1910.01465v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2010.09465v1", "title": "A Nesterov's Accelerated quasi-Newton method for Global Routing using Deep Reinforcement Learning", "publishedDate": "2020-10-15T07:30:17", "content": "Deep Q-learning method is one of the most popularly used deep reinforcement learning algorithms which uses deep neural networks to approximate the estimation of the action-value function. Training of the deep Q-network (DQN) is usually restricted to first order gradient based methods. This paper attempts to accelerate the training of deep Q-networks by introducing a second order Nesterov's accelerated quasi-Newton method. We evaluate the performance of the proposed method on deep reinforcement learning using double DQNs for global routing. The results show that the proposed method can obtain better routing solutions compared to the DQNs trained with first order Adam and RMSprop methods.", "doi": null, "authors": [ "S. Indrapriyadarsini", "Shahrzad Mahboubi", "Hiroshi Ninomiya", "Takeshi Kamio", "Hideki Asai" ], "journal": null, "tags": [ "cs.LG" ], "comments": "Accepted in NOLTA 2020", "pdf_url": "http://arxiv.org/pdf/2010.09465v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2010.09465v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331418", "title": "Hydrophobic ZIF-8 nanoparticles loaded on chitosan for improved methanol adsorption from fermented wine.", "content": "Metal-organic frameworks (MOFs) have great potential for the adsorption of minor molecular alcohols in the vapor phase. However, the drawbacks of powdered MOFs, including low recyclability and problematic separation, limit their application in fermented wine. Chitosan (CS) is a low-cost, eco-friendly, moldable matrix used in the food industry. In this study, a novel CS@ZIF-8 adsorbent with excellent microporous surface area was successfully synthesized by incorporating hydrophobic ZIF-8 into CS. The results showed that CS@ZIF-8 beads had a high adsorption affinity for methanol at a Zn", "journal": "Journal of food science", "issn": [ "1750-3841" ], "authors": [ "Mibin Lin", "Jia Sha", "Zhonghao Zhu", "Penghui Ye", "Kai Zhao", "Kaijun Xiao" ], "doi": "10.1111/1750-3841.17397", "publishedDate": "2024-08-31T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331418", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2101.06452v1", "title": "Hyperfine measurement of $6\\text{P}_{1/2}$ state in $^{87}\\text{Rb}$ using double resonance on blue and IR transition", "publishedDate": "2021-01-16T14:58:15", "content": "In this paper, we present the spectroscopy of 6P$_{1/2}$ state in $^{87}$Rb using double resonance technique at $780~\\text{nm}$ and $421~\\text{nm}$. The double resonance technique is implemented using electromagnetically induced transparency (EIT) and optical pumping methods. Using these spectroscopy methods, we have measured the hyperfine splitting of 6P$_{1/2}$ state with precision of $<$400~kHz which agrees well with other spectroscopy methods such as electrical discharge and saturated absorption spectroscopy at $421~\\text{nm}$.", "doi": "10.1088/1361-6455/ab7670", "authors": [ "Elijah Ogaro Nyakang'o", "Dangka Shylla", "Vasant Natarajan", "Kanhaiya Pandey" ], "journal": "J. Phys. B: At. Mol. Opt. Phys. 53 (2020) 095001", "tags": [ "physics.atom-ph" ], "comments": "6 pages, 5 figures", "pdf_url": "http://arxiv.org/pdf/2101.06452v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2101.06452v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331382", "title": "Modular Synthesis of Azidobicyclo[2.1.1]hexanes via (3 + 2) Annulation of α-Substituted Vinyl Azides and Bicyclo[1.1.0]butanes.", "content": "Here, we present a mild and rapid method to access azidobicyclo[2.1.1]hexanes via formal (3 + 2) cycloaddition of α-substituted vinyl azides and bicyclo[1.1.0]butanes under Lewis acid catalysis. A wide range of α-substituted vinyl azides were tolerated under mild conditions. Notably, the resulting cycloadducts could be transformed into structurally attractive 3-azabicyclo[3.1.1]heptenes through microwave-promoted rearrangement. The utilities were highlighted by copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition of tertiary alkyl azide and further transformation of the azide and ketone groups.", "journal": "The Journal of organic chemistry", "issn": [ "1520-6904" ], "authors": [ "Sai Hu", "Yuhong Gao", "Yuming Pan", "Dongshun Ni", "Li Deng" ], "doi": "10.1021/acs.joc.4c01920", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331382", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1711.03659v1", "title": "Frequency-comb based double-quantum two-dimensional coherent spectroscopy identifies collective hyperfine resonances in atomic vapor induced by dipole-dipole interactions", "publishedDate": "2017-11-10T01:06:56", "content": "Frequency comb based multidimensional coherent spectroscopy is a novel optical method that enables high resolution measurement in a short acquisition time. The method's resolution makes multidimensional coherent spectroscopy relevant for atomic systems that have narrow resonances. We use double-quantum multidimensional coherent spectroscopy to reveal collective hyperfine resonances in rubidium vapor at 100 C induced by dipole-dipole interactions. We observe tilted lineshapes in the double-quantum 2D spectra, which has never been reported for Doppler-broadened systems. The tilted lineshapes suggest that the signal is predominately from the interacting atoms that have near zero relative velocity.", "doi": "10.1103/PhysRevLett.120.233401", "authors": [ "Bachana Lomsadze", "Steven T. Cundiff" ], "journal": "Phys. Rev. Lett. 120, 233401 (2018)", "tags": [ "physics.atom-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1711.03659v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1711.03659v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331381", "title": "Liquid Atmospheric Pressure Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Using a Commercial Ion Source and Orbitrap Mass Analyzer.", "content": "A liquid atmospheric pressure-matrix-assisted laser desorption/ionization (LAP-MALDI) method has been developed and applied to a commercial AP-MALDI source on a hybrid orbitrap mass analyzer. It is shown that electrospray ionization (ESI)-like mass spectra of a range of peptides and proteins can be acquired by LAP-MALDI mass spectrometry (MS) as previously demonstrated on a homemade LAP-MALDI-Q-TOF setup but without the need of any modification to the commercially available MS equipment used. Multiply charged peptide ions were recorded with a resolution of around 100,000 and a mass accuracy of less than 5 ppm. The higher resolution and mass accuracy of the orbitrap analyzer compared with previously employed Q-TOF instrumentation provided high confidence in bacterial proteoform and species identification by top-down protein analysis.", "journal": "Analytical chemistry", "issn": [ "1520-6882" ], "authors": [ "Bob Challen", "Lily R Adair", "Rainer Cramer" ], "doi": "10.1021/acs.analchem.4c04458", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331381", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.00762v1", "title": "Deep Unsupervised Common Representation Learning for LiDAR and Camera Data using Double Siamese Networks", "publishedDate": "2020-01-03T08:53:27", "content": "Domain gaps of sensor modalities pose a challenge for the design of autonomous robots. Taking a step towards closing this gap, we propose two unsupervised training frameworks for finding a common representation of LiDAR and camera data. The first method utilizes a double Siamese training structure to ensure consistency in the results. The second method uses a Canny edge image guiding the networks towards a desired representation. All networks are trained in an unsupervised manner, leaving room for scalability. The results are evaluated using common computer vision applications, and the limitations of the proposed approaches are outlined.", "doi": null, "authors": [ "Andreas Bühler", "Niclas Vödisch", "Mathias Bürki", "Lukas Schaupp" ], "journal": null, "tags": [ "cs.CV", "cs.RO" ], "comments": "8 pages, CoRL 2019 template used", "pdf_url": "http://arxiv.org/pdf/2001.00762v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.00762v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331379", "title": "A Method for Treating Significant Conformational Changes in Alchemical Free Energy Simulations of Protein-Ligand Binding.", "content": "Relative binding free energy (RBFE) simulation is a rigorous approach to the calculation of quantitatively accurate binding free energy values for protein-ligand binding in which a reference binder is gradually converted to a target binder through alchemical transformation during the simulation. The success of such simulations relies on being able to accurately sample the correct conformational phase space for each alchemical state; however, this becomes a challenge when a significant conformation change occurs between the reference and target binder-receptor complexes. Increasing the simulation time and using enhanced sampling methods can be helpful, but effects can be limited, especially when the free energy barrier between conformations is high or when the correct target complex conformation is difficult to find and maintain. Current RBFE protocols seed the reference complex structure into every alchemical window of the simulation. In our study, we describe an improved protocol in which the reference structure is seeded into the first half of the alchemical windows, and the target structure is seeded into the second half of the alchemical windows. By applying information about the relevant correct end point conformations to different simulation windows from the beginning, the need for large barrier crossings or simulation prediction of the correct structures during an alchemical simulation is in many cases obviated. In the diverse cases we examine below, the simulations yielded free energy predictions that are satisfactory as compared to experiment and superior to running the simulations utilizing the conventional protocol. The method is straightforward to implement for publicly available FEP workflows.", "journal": "Journal of chemical theory and computation", "issn": [ "1549-9626" ], "authors": [ "Junzhuo Liao", "Alina P Sergeeva", "Edward D Harder", "Lingle Wang", "Jared M Sampson", "Barry Honig", "Richard A Friesner" ], "doi": "10.1021/acs.jctc.4c00954", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331379", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2011.10936v1", "title": "Fresnel Integral Computation Techniques", "publishedDate": "2020-11-22T05:04:55", "content": "This work is an extension of previous work by Alazah et al. [M. Alazah, S. N. Chandler-Wilde, and S. La Porte, Numerische Mathematik, 128(4):635-661, 2014]. We split the computation of the Fresnel Integrals into 3 cases: a truncated Taylor series, modified trapezoid rule and an asymptotic expansion for small, medium and large arguments respectively. These special functions can be computed accurately and efficiently up to an arbitrary precision. Error estimates are provided and we give a systematic method in choosing the various parameters for a desired precision. We illustrate this method and verify numerically using double precision.", "doi": null, "authors": [ "Alexandru Ionut", "James C. Hateley" ], "journal": null, "tags": [ "math.NA", "cs.NA" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2011.10936v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2011.10936v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331345", "title": "Cortical microstructural alterations in different stages of Parkinson's disease.", "content": "To explore the cortical microstructural alterations in Parkinson's disease (PD) at different stages. 149 PD patients and 76 healthy controls were included. PD patients were divided into early stage PD (EPD) (Hoehn-Yahr stage ≤ 2) and moderate-to-late stage PD (MLPD) (Hoehn-Yahr stage ≥ 2.5) according to their Hoehn-Yahr stages. All participants underwent two-shell diffusion MRI and the images were fitted to Neurite Orientation Dispersion and Density Imaging (NODDI) model to obtain the neurite density index (NDI) and orientation dispersion index (ODI) to reflect the cortical microstructure. We used gray matter-based spatial statistics method to compare the voxel-wise cortical NODDI metrics between groups. Partial correlation was used to correlate the NODDI metrics and global composite outcome in PD patients. Compared with healthy controls, EPD patients showed lower ODI in widespread regions, covering bilateral frontal, temporal, parietal and occipital cortices, as well as regional lower NDI in bilateral cingulate and frontal lobes. Compared with healthy controls, MLPD patients showed lower ODI and NDI in more widespread regions. Compared with EPD patients, MLPD patients showed lower ODI in bilateral temporal, parietal and occipital cortices, where the ODI values were negatively correlated with global composite outcome in PD patients. PD patients showed widespread cortical microstructural degeneration, characterized by reduced neurite density and orientation dispersion, and the cortical neuritic microstructure exhibit progressive degeneration during the progression of PD.", "journal": "Brain imaging and behavior", "issn": [ "1931-7565" ], "authors": [ "Xueqin Bai", "Tao Guo", "Xiaojun Guan", "Cheng Zhou", "Jingjing Wu", "Haoting Wu", "Xiaocao Liu", "Chengqing Wu", "Jingwen Chen", "Jiaqi Wen", "Jianmei Qin", "Sijia Tan", "Xiaojie DuanMu", "Luyan Gu", "Ting Gao", "Peiyu Huang", "Baorong Zhang", "Xiaojun Xu", "Xiangwu Zheng", "Minming Zhang" ], "doi": "10.1007/s11682-024-00931-5", "publishedDate": "2024-09-12T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331345", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/1i9f", "title": "STRUCTURAL CHARACTERIZATION OF THE COMPLEX OF THE REV RESPONSE ELEMENT RNA WITH A SELECTED PEPTIDE", "content": "Structural characterization of the complex of the Rev response element RNA with a selected peptide. - Zhang Q, Harada K, Cho HS, Frankel A, Wemmer DE Chem Biol (8) 511-20 (2001)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/1i9f_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/1i9f", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1, 2 ], "score": 3.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4evu", "title": "Crystal structure of C-terminal domain of putative periplasmic protein ydgH from S. enterica", "content": "Structural and functional characterization of DUF1471 domains of Salmonella proteins SrfN, YdgH/SssB, and YahO. - Michalska K, Cui H, Xu X, Brown RN, Cort JR, Heffron F, Nakayasu ES, Savchenko A, Adkins JN, Joachimiak A, Program for the Characterization of Secreted Effector Proteins (PCSEP), Midwest Center for Structural Genomics (MCSG) PLoS One (9) e101787 (2014)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4evu_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4evu", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/6jic", "title": "Identification and Characterization of a carboxypeptidase inhibitor from Lycium barbarum", "content": "Identification and characterization of a wolfberry carboxypeptidase inhibitor from Lycium barbarum. - Tan WL, Wong KH, Huang JY, Tay SV, Wang SJ Food Chem (351) 129338 (2021)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/6jic_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/6jic", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2knp", "title": "Isolation and characterization of peptides from Momordica cochinchinensis seeds.", "content": "Isolation and characterization of peptides from Momordica cochinchinensis seeds. - Daly NL, Chan L J Nat Prod (72) 1453-8 (2009)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2knp_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2knp", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2k3c", "title": "Structural and Functional Characterization of TM IX of the NHE1 Isoform of the Na+/H+ Exchanger", "content": "Structural and functional characterization of transmembrane segment IX of the NHE1 isoform of the Na+/H+ exchanger. - Reddy T, Ding J, Li X, Sykes BD, Fliegel L, Rainey JK J Biol Chem (283) 22018-30 (2008)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2k3c_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2k3c", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2111.05595v2", "title": "Study of a bi-axial (KTP) crystal using Double Stokes Mueller Polarimetry", "publishedDate": "2021-11-10T09:36:45", "content": "We report the significance of the double Stokes Mueller polarimetry (DSMP) technique, to characterize a large size (3 X 3 X 5mm) KTP (Potassium titanyl phosphate) crystal. The crystal undergoes second harmonic generation with type II phase matching. The study of standard KTP crystal using the DSMP technique helps to validate the efficiency of this technique. We were able to extract the crystal's double Mueller matrix, the relative contribution of the susceptibility tensor components, the phase difference between the susceptibility tensor components, etc. We could determine the crystal axes orientation using this optical technique, which was not possible through a single crystal X-Ray diffraction technique for such a large size crystal for which both optic axes and crystallographic axes are the same. Axes direction determined from polarization microscope measurements and Laue diffraction measurements on KTP crystal is compared with those obtained from DSMP measurements.", "doi": "10.1142/S0218863523500236", "authors": [ "Chitra Shaji", "Sruthil Lal S B", "Alok Sharan" ], "journal": null, "tags": [ "physics.optics" ], "comments": "22 pages,11 figures", "pdf_url": "http://arxiv.org/pdf/2111.05595v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2111.05595v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2304.09139v1", "title": "Generating large disordered stealthy hyperuniform systems with ultra-high accuracy to determine their physical properties", "publishedDate": "2023-04-18T17:23:08", "content": "Hyperuniform many-particle systems are characterized by a structure factor $S({\\mathbf{k}})$ that is precisely zero as $|\\mathbf{k}|\\rightarrow0$; and stealthy hyperuniform systems have $S({\\mathbf{k}})=0$ for the finite range $0 < |{\\mathbf{k}}| \\le K$, called the \"exclusion region.\" Through a process of collective-coordinate optimization, energy-minimizing disordered stealthy hyperuniform systems of moderate size have been made to high accuracy, and their novel physical properties have shown great promise. However, minimizing $S(\\mathbf{k})$ in the exclusion region is computationally intensive as the system size becomes large. In this Letter, we present an improved methodology to generate such states using double-double precision calculations on GPUs that reduces the deviations from zero within the exclusion region by a factor of approximately $10^{30}$ for systems sizes more than an order of magnitude larger. We further show that this ultra-high accuracy is required to draw conclusions about their corresponding characteristics, such as the nature of the associated energy landscape and the presence or absence of Anderson localization, which might be masked, even when deviations are relatively small.", "doi": "10.1103/PhysRevResearch.5.033190", "authors": [ "Peter K. Morse", "Jaeuk Kim", "Paul J. Steinhardt", "Salvatore Torquato" ], "journal": null, "tags": [ "cond-mat.stat-mech", "cond-mat.soft" ], "comments": "7 pages, 3 figures", "pdf_url": "http://arxiv.org/pdf/2304.09139v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2304.09139v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331411", "title": "Unraveling the adsorption-limited hydrogen oxidation reaction at palladium surface via in situ electron microscopy.", "content": "Palladium (Pd) catalysts have been extensively studied for the direct synthesis of H", "journal": "Proceedings of the National Academy of Sciences of the United States of America", "issn": [ "1091-6490" ], "authors": [ "Yukun Liu", "Kunmo Koo", "Zugang Mao", "Xianbiao Fu", "Xiaobing Hu", "Vinayak P Dravid" ], "doi": "10.1073/pnas.2408277121", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331411", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2403.03919v1", "title": "Multi-parameter quantum estimation of single- and two-mode pure Gaussian states", "publishedDate": "2024-03-06T18:29:17", "content": "We discuss the ultimate precision bounds on the multiparameter estimation of single- and two-mode pure Gaussian states. By leveraging on previous approaches that focused on the estimation of a complex displacement only, we derive the Holevo Cram\\'er-Rao bound (HCRB) for both displacement and squeezing parameter characterizing single and two-mode squeezed states. In the single-mode scenario, we obtain an analytical bound and find that it degrades monotonically as the squeezing increases. Furthermore, we prove that heterodyne detection is nearly optimal in the large squeezing limit, but in general the optimal measurement must include non-Gaussian resources. On the other hand, in the two-mode setting, the HCRB improves as the squeezing parameter grows and we show that it can be attained using double-homodyne detection.", "doi": "10.1088/1751-8121/ad6364", "authors": [ "Gabriele Bressanini", "Marco G. Genoni", "M. S. Kim", "Matteo G. A. Paris" ], "journal": "J. Phys. A: Math. Theor. 57 315305 (2024)", "tags": [ "quant-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2403.03919v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2403.03919v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331343", "title": "Detection of Shiga toxin-producing Escherichia coli in dairy cows: genetic characterization and inhibition of adherence by catlle anti-STEC antibodies to HEp-2 cell.", "content": "Shiga toxin-producing Escherichia coli (STEC) is a zoonotic pathogen associated with severe disease. Cattle are recognized as the primary animal reservoir of STEC. This study reports the occurrence and characterization of STEC from dairy cows and evaluates the inhibition of adherence by catlle anti-STEC antibodies to the HEp-2 cell. From 151 samples, 30% (n = 45) were positive for stx by PCR screening (25.21% of dairy cows and 46.8% of growing calves). From these positive samples, 17 STEC isolates were characterized. In dairy cows, 3 out of 17 samples carried stx2, 3 out of 17 possessed stx1, and 2 out of 17 carried stx1/stx2. In growing cows, 8 out of 17 samples carried stx1 and 1 out of 17 carried stx1/stx2. Other virulence factors such as ehxA, saa, iha, cah, and eae were detected. The strains were typed into 3 E. coli O groups (O26, O91, and O130). The analysis of the HEp-2 adherence assays indicated that all serum from both cattle categories presented high levels of inhibition of adherence. Considering the severity of the symptoms caused by STEC in humans, searching for factors influencing the colonization of STEC in cattle would help identify strategies to avoid transmission and STEC infection.", "journal": "Veterinary research communications", "issn": [ "1573-7446" ], "authors": [ "Rocío Colello", "M Victoria Vélez", "Marcelo Rodríguez", "Ariel Rogé", "Analía I Etcheverría", "Nora Lía Padola" ], "doi": "10.1007/s11259-024-10557-z", "publishedDate": "2024-09-21T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331343", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2404.13797v1", "title": "On pseudo-Riemannian Ricci-parallel Lie groups which are not Einstein", "publishedDate": "2024-04-21T23:27:47", "content": "In this paper, we mainly study left invariant pseudo-Riemannian Ricci-parallel metrics on connected Lie groups which are not Einstein. Following a result of Boubel and B\\'{e}rard Bergery, there are two typical types of such metrics, which are characterized by the minimal polynomial of the Ricci operator. Namely, its form is either $(X-\\alpha)(X-\\bar{\\alpha})$ (type I), where $\\alpha\\in \\mathbb{C}\\setminus \\mathbb{R}$, or $X^{2}$ (type II). Firstly, we obtain a complete description of Ricci-parallel metrics of type I. In particular, such a Ricci-parallel metric is uniquely determined by an Einstein metric and an invariant symmetric parallel complex structure up to isometry and scaling. Then we study Ricci-parallel metric Lie algebras of type II by using double extension process. Surprisingly, we find that every double extension of a metric Abelian Lie algebra is Ricci-parallel and the converse holds for Lorentz Ricci-parallel metric nilpotent Lie algebras of type II. Moreover, we construct infinitely many new explicit examples of Ricci-parallel metric Lie algebras which are not Einstein.", "doi": null, "authors": [ "Huihui An", "Zaili Yan" ], "journal": null, "tags": [ "math.DG", "53C50, 53C25, 22E25" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2404.13797v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2404.13797v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331330", "title": "Production, Characterization, Kinetics, and Thermodynamics Analysis of Amyloglucosidase from Fungal Consortium.", "content": "The current study aimed to produce an amyloglucosidase enzyme from the fungal consortium. The best amylolytic fungal consortia were identified as Alternaria alternata and Aspergillus niger through the 18S rDNA technique. Fermentation kinetics and various nutritional and cultural parameters were analyzed. Maximum production was obtained in M4 media, pH 5.5, 30 °C, and 4 mL inoculum at 150 rpm after 72 h of incubation. Along with that, sodium nitrate at 2.5%, maltose, beef extract 1%, zinc sulfate (0.1%), and Tween 80 (0.1%) supported the maximum amyloglucosidase production. Amyloglucosidase was partially purified up to 1.6 purification fold with a specific activity of 1.84 Umg", "journal": "Applied biochemistry and biotechnology", "issn": [ "1559-0291" ], "authors": [ "Imran Ali", "Roheena Abdullah", "Asifa Saleem", "Kinza Nisar", "Afshan Kaleem", "Mehwish Iqtedar", "Irfana Iqbal", "Xiaoming Chen" ], "doi": "10.1007/s12010-024-05067-2", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331330", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2009.07217v1", "title": "Low Energy Light Yield of Fast Plastic Scintillators", "publishedDate": "2020-09-15T16:51:23", "content": "Compact neutron imagers using double-scatter kinematic reconstruction are being designed for localization and characterization of special nuclear material. These neutron imaging systems rely on scintillators with a rapid prompt temporal response as the detection medium. As n-p elastic scattering is the primary mechanism for light generation by fast neutron interactions in organic scintillators, proton light yield data are needed for accurate assessment of scintillator performance. The proton light yield of a series of commercial fast plastic organic scintillators---EJ-200, EJ-204, and EJ-208---was measured via a double time-of-flight technique at the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory. Using a tunable deuteron breakup neutron source, target scintillators housed in a dual photomultiplier tube configuration, and an array of pulse-shape-discriminating observation scintillators, the fast plastic scintillator light yield was measured over a broad and continuous energy range down to proton recoil energies of approximately 50 keV. This work provides key input to event reconstruction algorithms required for utilization of these materials in emerging neutron imaging modalities.", "doi": "10.1016/j.nima.2018.10.122", "authors": [ "T. A. Laplace", "B. L. Goldblum", "J. A. Brown", "D. L. Bleuel", "C. A. Brand", "G. Gabella", "T. Jordan", "C. Moore", "N. Munshi", "Z. W. Sweger", "A. Ureche", "E. Brubaker" ], "journal": "Nuclear Instruments and Methods in Physics Research Section A:\n Accelerators, Spectrometers, Detectors and Associated Equipment 954 (2020):\n 161444", "tags": [ "physics.ins-det" ], "comments": "15 pages, 6 figures", "pdf_url": "http://arxiv.org/pdf/2009.07217v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2009.07217v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331193", "title": "Exploring the heterogeneity of interstitial cells of Cajal and their properties in gastrointestinal mesenchymal tumors applying single-cell RNA sequencing analysis.", "content": "Gastrointestinal mesenchymal stromal tumors (GISTs) are a group of intramural tumors that exhibit a wide range of morphologies. Dysfunction or loss of interstitial cells of Cajal (ICCs) is correlated with the disorders of gastrointestinal motility. At present, the characterization and molecular mechanisms underlying the role of ICCs in GIST are still not clear.", "journal": "Discover oncology", "issn": [ "2730-6011" ], "authors": [ "Yongjun Zhu", "Rui Zhang", "Shipai Zhang", "Haijun Hu" ], "doi": "10.1007/s12672-024-01372-8", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331193", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2205.13823v1", "title": "Fourier-Stieltjes algebras, decomposable Fourier multipliers and amenability", "publishedDate": "2022-05-27T08:31:40", "content": "We prove that the Fourier-Stieltjes algebra $\\mathrm{B}(G)$ of a discrete group $G$ is isometrically isomorphic to the algebra $\\mathfrak{M}^{\\infty,\\mathrm{dec}}(G)$ of decomposable Fourier multipliers on the group von Neumann algebra $\\mathrm{VN}(G)$. With sharp contrast, we prove that $\\mathfrak{M}^{\\infty,\\mathrm{dec}}(G)\\not=\\mathrm{B}(G)$ for some class of non-discrete locally compact groups and that $\\mathfrak{M}^{\\infty,\\mathrm{dec}}(G)=\\mathrm{B}(G)$ for any (second countable unimodular) inner amenable locally compact group. To prove these results, we connect to groupoid theory and to the problem of the existence of a contractive projection preserving complete positivity from the space of normal completely bounded operators on $\\mathrm{VN}(G)$ onto the space $\\mathfrak{M}^{\\infty,\\mathrm{cb}}(G)$ of completely bounded Fourier multipliers, that we solve affirmatively in the inner amenable case. In addition, we are able to show that such projections does not exist for (second countable) non-amenable connected locally compact groups. Indeed, we examine more generally if the space $\\mathfrak{M}^{p,\\mathrm{cb}}(G)$ of completely bounded Fourier multipliers on the noncommutative $\\mathrm{L}^p$-space $\\mathrm{L}^p(\\mathrm{VN}(G))$ is complemented in the space of completely bounded operators, where $1 \\leq p \\leq \\infty$. Using doubling metrics on Lie groups and structure theory from the solution to Hilbert's fifth problem, we establish that any (second countable unimodular) finite-dimensional amenable locally compact group admits compatible bounded projections at level $p=1$ and $p=\\infty$. Finally, we also state a related new characterization of amenability for (second countable unimodular) locally compact groups and we also give applications to decomposable (=regular) multipliers.", "doi": null, "authors": [ "Cédric Arhancet", "Christoph Kriegler" ], "journal": null, "tags": [ "math.FA", "math.OA" ], "comments": "59 pages", "pdf_url": "http://arxiv.org/pdf/2205.13823v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2205.13823v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331189", "title": "Epidemiology, genetic characterization and population structure analysis of lumpy skin disease virus from North India.", "content": "Lumpy skin disease (LSD) is a transboundary, viral disease of cattle with a significant economic impact on the livestock industry. This study describes the epidemiological investigations of outbreaks of LSD that occurred in 2022 in three Indian states viz., Haryana, Himachal Pradesh and Rajasthan and the genetic characterization of Lumpy skin disease viruses (LSDVs). Also, the population structure analysis of LSDVs was carried out. Out of 138 scab samples tested from suspected cattle for LSDV, 106 were found positive. Of these, nine representative scab samples were further genetically characterized. Phylogenetic analysis based on the P32 and EEV gene sequences depicted that the LSDV strains of the present study had nucleotide identity of 100% and 99.10-99.45%, respectively with the LSDV/2019 field strains of India. Multiple sequence alignment of the EEV glycoprotein gene sequences revealed nucleotide polymorphisms at three positions viz., G178A, G253A and A459G in circulating LSDV/2022 field strains. Based on the median joining network analysis of the EEV gene, 12 haplotypes were identified among the LSDV populations. Population structure analysis corresponding to the EEV gene revealed high haplotype (0.8486 ± 0.026) and low nucleotide diversities (0.00636 ± 0.0006) and negative values for neutrality indices, indicating a high number of closely related haplotypes and the studied population may have undergone a recent expansion. The findings will help in understanding the distribution and dynamics of LSDV populations, which will prove pivotal in designing and implementing effective management and control strategies.", "journal": "Tropical animal health and production", "issn": [ "1573-7438" ], "authors": [ "Pallavi Moudgil", "Ramesh Kumar", "Punit Jhandai", "Sameer Kamboj", "Khushbu Bishnoi", "Kushal Grakh", "Renu Gupta", "Rajesh Khurana", "Naresh Jindal" ], "doi": "10.1007/s11250-024-04102-y", "publishedDate": "2024-09-11T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331189", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2402.05265v1", "title": "Insights From Univalent Foundations: A Case Study Using Double Categories", "publishedDate": "2024-02-07T21:23:33", "content": "Category theory unifies mathematical concepts, aiding comparisons across structures by incorporating objects and morphisms, which capture their interactions. It has influenced areas of computer science such as automata theory, functional programming, and semantics. Certain objects naturally exhibit two classes of morphisms, leading to the concept of a double category, which has found applications in computing science (e.g., ornaments, profunctor optics, denotational semantics). The emergence of diverse categorical structures motivated a unified framework for category theory. However, unlike other mathematical objects, classification of categorical structures faces challenges due to various relevant equivalences. This poses significant challenges when pursuing the formalization of categories and restricts the applicability of powerful techniques, such as transport along equivalences. This work contends that univalent foundations offers a suitable framework for classifying different categorical structures based on desired notions of equivalences, and remedy the challenges when formalizing categories. The richer notion of equality in univalent foundations makes the equivalence of a categorical structure an inherent part of its structure. We concretely apply this analysis to double categorical structures. We characterize and formalize various definitions in Coq UniMath, including (pseudo) double categories and double bicategories, up to chosen equivalences. We also establish univalence principles, making chosen equivalences part of the double categorical structure, analyzing strict double setcategories (invariant under isomorphisms), pseudo double setcategories (invariant under isomorphisms), univalent pseudo double categories (invariant under vertical equivalences) and univalent double bicategories (invariant under gregarious equivalences).", "doi": null, "authors": [ "Nima Rasekh", "Niels van der Weide", "Benedikt Ahrens", "Paige Randall North" ], "journal": null, "tags": [ "math.CT" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2402.05265v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2402.05265v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331177", "title": "Combining SiO", "content": "Cadmium (Cd) pollution in water and soil seriously threatens human health. Biochar and nanomaterials have high potential for solving the cadmium pollution problem due to their abundant pores and high specific surface area. Here, the preparation of the composite material SiO", "journal": "Environmental geochemistry and health", "issn": [ "1573-2983" ], "authors": [ "Shirui Peng", "Jing Liu", "Guofei Pan", "Yan Qin", "Zhixing Yang", "Xiaomu Yang", "Minghua Gu", "Zhiqiang Zhu", "Yanyan Wei" ], "doi": "10.1007/s10653-024-02243-5", "publishedDate": "2024-09-17T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331177", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2203.04701v1", "title": "Millisecond Time-Scale Measurements of Heat Transfer to Confined He II", "publishedDate": "2022-03-09T13:24:28", "content": "We explore transient heat transfer, on the millisecond time-scale, from a narrow, rectangular stainless steel heater cooled from one side by He II confined to a channel of 120 $\\mu$m depth. The helium is isolated from the external bath with the exception of two pin-holes of cross section about 10% that of the channel. We measure the temperatures of both the heater strip and the channel helium during slow-pulse heating that reaches peak power after 9 ms, fast-pulse heating that reaches peak power after 100 $\\mu$s, and step heating that reaches steady power after 100 $\\mu$s. Using the steady state Kapitza heat transfer expression at the interface between heater and helium, and the Gorter-Mellink heat transfer regime in the helium channel, we obtain excellent agreement between simulation and measurement during the first 5 ms of slow-pulse tests. Using instead the measured helium temperature in the Kapitza expression, we obtain excellent agreement between the simulated and measured heater response during the first 150 ms of slow-pulse tests. The same model fails to explain the fast-pulse transient response of the heater and helium, while it can explain the helium response to a step in applied power but not the heater response. The steady state Kapitza expression may therefore not be applicable to heating events that are over within a single millisecond.", "doi": null, "authors": [ "Jonas Blomberg Ghini", "Bernhard Auchmann", "Bertrand Baudouy" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2203.04701v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2203.04701v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331138", "title": "The plant early recombinosome: a high security complex to break DNA during meiosis.", "content": "The formacion of numerous unpredictable DNA Double Strand Breaks (DSBs) on chromosomes iniciates meiotic recombination. In this perspective, we propose a 'multi-key lock' model to secure the risky but necesary breaks as well as a 'one per pair of cromatids' model for the topoisomerase-like early recombinosome. During meiosis, homologous chromosomes recombine at few sites of crossing-overs (COs) to ensure correct segregation. The initiation of meiotic recombination involves the formation of DNA double strand breaks (DSBs) during prophase I. Too many DSBs are dangerous for genome integrity: if these DSBs are not properly repaired, it could potentially lead to chromosomal fragmentation. Too few DSBs are also problematic: if the obligate CO cannot form between bivalents, catastrophic unequal segregation of univalents lead to the formation of sterile aneuploid spores. Research on the regulation of the formation of these necessary but risky DSBs has recently advanced in yeast, mammals and plants. DNA DSBs are created by the enzymatic activity of the early recombinosome, a topoisomerase-like complex containing SPO11. This opinion paper reviews recent insights on the regulation of the SPO11 cofactors necessary for the introduction of temporally and spatially controlled DSBs. We propose that a 'multi-key-lock' model for each subunit of the early recombinosome complex is required to secure the formation of DSBs. We also discuss the hypothetical implications that the established topoisomerase-like nature of the SPO11 core-complex can have in creating DSB in only one of the two replicated chromatids of early prophase I meiotic chromosomes. This hypothetical 'one per pair of chromatids' DSB formation model could optimize the faithful repair of the self-inflicted DSBs. Each DSB could use three potential intact homologous DNA sequences as repair template: one from the sister chromatid and the two others from the homologous chromosomes.", "journal": "Plant reproduction", "issn": [ "2194-7961" ], "authors": [ "Nahid Rafiei", "Arnaud Ronceret" ], "doi": "10.1007/s00497-024-00509-7", "publishedDate": "2024-08-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331138", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2406.08701v1", "title": "Impacts of Backside Insulation on the Dynamic On-Resistance of Lateral p-GaN HEMTs-on-Si", "publishedDate": "2024-06-12T23:58:41", "content": "We examined the effect of backside insulation on the dynamic on-resistance of lateral p-GaN HEMTs. To gain a comprehensive understanding of the dynamic onresistance difference between substrate grounded and substrate floating p-GaN HEMTs, we conducted in-circuit double pulse testing and long-term direct current (DC) bias stress. We have realized that while backside insulation can enhance the breakdown voltage of lateral p-GaN HEMTs, it also comes with a tradeoff in device reliability. Results through Sentaurus TCAD simulation suggest that the use of backside insulation in devices gradually disperses potential to the buffer barrier. As a result, the potential barrier at the buffer edge of the 2DEG channel decreases significantly, leading to considerable electron trappings at buffer traps. This breakdown voltage and reliability tradeoff also applies to HEMT technologies using insulating substrates.", "doi": null, "authors": [ "Yu-Xuan Wang", "Mao-Chou Tai", "Ting-Chang Chang", "Wei-Chen Huang", "Zeyu Wan", "Simon Li", "Simon Sze", "Guangrui Xia" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2406.08701v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2406.08701v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331087", "title": "Effect of bioceramic inclusions on gel-cast aliphatic polymer membranes for bone tissue engineering applications: An in vitro study.", "content": "Polylactic acid (PLA) has been extensively used in tissue engineering. However, poor mechanical properties and low cell affinity have limited its pertinence in load bearing bone tissue regeneration (BTR) devices.", "journal": "Bio-medical materials and engineering", "issn": [ "1878-3619" ], "authors": [ "Vasudev Vivekanand Nayak", "Edmara T P Bergamo", "Vijayavenkataraman Sanjairaj", "Rakesh Kumar Behera", "Nikhil Gupta", "Paulo G Coelho", "Lukasz Witek" ], "doi": "10.3233/BME-240079", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331087", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2003.00220v1", "title": "Effective Localization Using Double Ideal Quotient and Its Implementation", "publishedDate": "2020-02-29T09:40:12", "content": "In this paper, we propose a new method for localization of polynomial ideal, which we call \"Local Primary Algorithm\". For an ideal $I$ and a prime ideal $P$, our method computes a $P$-primary component of $I$ after checking if $P$ is associated with $I$ by using \"double ideal quotient\" $(I:(I:P))$ and its variants which give us a lot of information about localization of $I$.", "doi": "10.1007/978-3-319-99639-4_19", "authors": [ "Yuki Ishihara", "Kazuhiro Yokoyama" ], "journal": "Proc. CASC 2018, LNCS 11077, pp.272-287, Springer 2018", "tags": [ "math.AC", "cs.SC" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2003.00220v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2003.00220v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331082", "title": "Full-Incision Double-Eyelid Blepharoplasty with Selective Sensory Nerve Preservation.", "content": "Full-incision double-eyelid blepharoplasty can result in upper eyelid skin numbness postoperatively. However, few studies have examined sensory loss after eyelid surgery. We propose a novel surgical approach with selective sensory nerve preservation to prevent postoperative upper eyelid numbness.", "journal": "Aesthetic plastic surgery", "issn": [ "1432-5241" ], "authors": [ "Jing Liu", "Jinlong Huang", "Jia Liu", "Xiaodong Chen", "Gang Chen", "Jinming Wang" ], "doi": "10.1007/s00266-024-04371-w", "publishedDate": "2024-09-03T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331082", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4d0q", "title": "Hyaluronan Binding Module of the Streptococcal Pneumoniae Hyaluronate Lyase", "content": "Conformational analysis of the Streptococcus pneumoniae hyaluronate lyase and characterization of its hyaluronan-specific carbohydrate-binding module. - Suits MDL, Pluvinage B, Law A, Liu Y, Palma AS, Chai W, Feizi T, Boraston AB J Biol Chem (289) 27264-27277 (2014)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4d0q_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4d0q", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4am5", "title": "Bacterioferritin from Blastochloris viridis", "content": "Structural characterization of bacterioferritin from Blastochloris viridis. - Wahlgren WY, Omran H, von Stetten D, Royant A, van der Post S, Katona G PLoS One (7) e46992 (2012)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4am5_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4am5", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331462", "title": "Ablation of Supraventricular Arrhythmias With as Low as Reasonably Achievable X-Ray exposure (AALARA): Results of Prospective, Observational, Multicenter, Multinational, Open-Label Registry Study on Real World Data Using Routine Ensite 3D Mapping During SVT Ablation.", "content": "The reduction of fluoroscopic exposure during catheter ablation of supraventricular arrhythmias is widely adopted by experienced electrophysiology physicians with a relatively short learning curve and is becoming the standard of care in many parts of the world. While observational studies in the United States and some parts of Western Europe have evaluated the minimal fluoroscopic approach, there are scarce real-world data for this technique and the generalizability of outcomes in other economic regions.", "journal": "Pacing and clinical electrophysiology : PACE", "issn": [ "1540-8159" ], "authors": [ "Mohammad Amin", "Ayan Abdrakhmanov", "Evgeniy Kropotkin", "Vasil Traykov", "Zoltán Salló", "László Gellér", "Faizel Lorgat", "Oleg Sapelnikov", "Ondrej Toman", "Khalid Al-Muti", "Mohamed Aljaabari", "Adrian Bystriansky", "László Környei", "Nebojša Mujović", "Stefanie Simons", "Nándor Szegedi" ], "doi": "10.1111/pace.15075", "publishedDate": "2024-09-04T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331462", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2201.02243v1", "title": "Benchmarking Characterization Methods for Noisy Quantum Circuits", "publishedDate": "2022-01-06T20:44:39", "content": "Effective methods for characterizing the noise in quantum computing devices are essential for programming and debugging circuit performance. Existing approaches vary in the information obtained as well as the amount of quantum and classical resources required, with more information generally requiring more resources. Here we benchmark the characterization methods of gate set tomography, Pauli channel noise reconstruction, and empirical direct characterization for developing models that describe noisy quantum circuit performance on a 27-qubit superconducting transmon device. We evaluate these models by comparing the accuracy of noisy circuit simulations with the corresponding experimental observations. We find that the agreement of noise model to experiment does not correlate with the information gained by characterization and that the underlying circuit strongly influences the best choice of characterization approach. Empirical direct characterization scales best of the methods we tested and produced the most accurate characterizations across our benchmarks.", "doi": null, "authors": [ "Megan L. Dahlhauser", "Travis S. Humble" ], "journal": null, "tags": [ "quant-ph" ], "comments": "18 pages, 23 figures; content originally in M.L.D. dissertation found\n at: https://trace.tennessee.edu/utk_graddiss/6659/", "pdf_url": "http://arxiv.org/pdf/2201.02243v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2201.02243v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331444", "title": "Silicone sling surgery for congenital ptosis: Tarsal tunnel technique.", "content": "This was a prospective, interventional, comparative study conducted on patients with congenital simple severe ptosis. A novel method of silicone rod fixation to the tarsus (tarsal tunnel technique, group 1) was done compared with a conventional technique of silicone rod fixation (suture fixation technique, group 2) in frontalis suspension surgery. A total of 30 patients were randomized into two groups of 15 patients each. Postoperatively, MRD1, vertical palpebral aperture, and eyelid fold height were comparable in both groups till the last follow-up with stability in eyelid position. Patient satisfaction scores showed similar results with good-fair satisfaction grading in 13 patients in group 1 and 11 patients in group 2 at 6 months follow-up. No significant complications occurred in either group. Tarsal tunnel fixation of silicone rods is a novel method in sling surgery with optimal cosmetic and function outcomes. Further long-term studies are needed to validate the results of the technique.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Neelam Pushker", "Manish Mahabir", "Sahil Agrawal", "Mandeep Singh Bajaj" ], "doi": "10.4103/IJO.IJO_2766_23", "publishedDate": "2024-03-10T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331444", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2309.10353v1", "title": "A characterization of von Neumann entropy using functors", "publishedDate": "2023-09-19T06:26:19", "content": "Baez, Fritz, and Leinster derived a method for characterizing Shannon entropy in classical systems. In this method, they considered a functor from a certain category to the monoid of non-negative real numbers with addition as a map from measure-preserving functions to non-negative real numbers, and derived Shannon entropy by imposing several simple conditions. We propose a method for characterizing von Neumann entropy by extending their results to quantum systems.", "doi": null, "authors": [ "K. Nakahira" ], "journal": null, "tags": [ "quant-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2309.10353v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2309.10353v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331443", "title": "Evaluation of antioxidant status of lens epithelial cells in cataract patients.", "content": "The main factor that causes cataracts is the increased oxidative stress and imbalance of an antioxidant defense mechanism, which leads to significant changes in the lens microarchitecture. Senile cataract is the most common type of acquired cataracts due to aging.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Kranti Santosh Sorte Gawali", "Avinash Namdeo Jadhao", "Trupti Diwan Ramteke", "Neelam Jayant Patil", "Harshal Sahare" ], "doi": "10.4103/IJO.IJO_19_24", "publishedDate": "2024-04-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331443", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2203.04701v1", "title": "Millisecond Time-Scale Measurements of Heat Transfer to Confined He II", "publishedDate": "2022-03-09T13:24:28", "content": "We explore transient heat transfer, on the millisecond time-scale, from a narrow, rectangular stainless steel heater cooled from one side by He II confined to a channel of 120 $\\mu$m depth. The helium is isolated from the external bath with the exception of two pin-holes of cross section about 10% that of the channel. We measure the temperatures of both the heater strip and the channel helium during slow-pulse heating that reaches peak power after 9 ms, fast-pulse heating that reaches peak power after 100 $\\mu$s, and step heating that reaches steady power after 100 $\\mu$s. Using the steady state Kapitza heat transfer expression at the interface between heater and helium, and the Gorter-Mellink heat transfer regime in the helium channel, we obtain excellent agreement between simulation and measurement during the first 5 ms of slow-pulse tests. Using instead the measured helium temperature in the Kapitza expression, we obtain excellent agreement between the simulated and measured heater response during the first 150 ms of slow-pulse tests. The same model fails to explain the fast-pulse transient response of the heater and helium, while it can explain the helium response to a step in applied power but not the heater response. The steady state Kapitza expression may therefore not be applicable to heating events that are over within a single millisecond.", "doi": null, "authors": [ "Jonas Blomberg Ghini", "Bernhard Auchmann", "Bertrand Baudouy" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2203.04701v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2203.04701v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331437", "title": "Analysis of anthropometric measurements taken from the periocular region in healthy young individuals with different somatotypes.", "content": "Anthropometric parameters related with the periocular region (PR) have gained great importance with the optical technology used in the treatment of eye defects. They have also become important parameters that determine the limits of treatment in aesthetic surgery procedures in PR and the treatment of orbital diseases. The aim of this study was to examine the relationship of PR measurements with somatotype.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Sıdıka Karaketir", "Demet Şencan", "Serdar Çolakoğlu", "Deniz Şenol" ], "doi": "10.4103/IJO.IJO_2836_23", "publishedDate": "2024-02-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331437", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2406.05502v1", "title": "Characterization of Recirculating Waveguide Meshes Based on an Optimization Method with a Parameter Space Reduction Technology", "publishedDate": "2024-06-08T15:58:55", "content": "Fabrication imperfections must be considered during configuration to ensure that the setup is suitable for the actual fabricated programmable photonic integrated circuits (PPICs). Therefore, characterization of imperfections is crucial but difficult, especially for PPICs made from recirculating waveguide meshes. The flexibility required by these meshes demands a more complex topology and compact TBU structure, complicating the characterization. In this paper, we propose a characterization method applicable to recirculating waveguide meshes based on an optimization approach, along with a step-by-step procedure to reduce the parameter space of optimization, allowing for characterizing imperfect parameters of each individual component within the waveguide mesh. To the best of our knowledge, this method can greatly broaden the range of characterized parameters compared to currently reported methods. In order to verify the effectiveness of our method, we used the characterized parameters to build a multi-frequency model of a mesh with fabrication errors and successfully demonstrated accurate prediction of its behavior. Furthermore, we applied our method on implementations of 6 different kind of FIR/IRR filters, to further prove the effectiveness of our method in configuring applications on meshes with fabrication errors. At last, our method was carried out under various scenarios considering beam splitter splitting ratio variance, inaccurate measurements of mesh and imprecise TBU insertion loss characterization, to demonstrate its strong robustness under various practical scenarios.", "doi": null, "authors": [ "Ran Tao", "Jifang Qiu", "Yuchen Chen", "Bowen Zhang", "Yan Li", "Hongxiang Guo", "Jian Wu" ], "journal": null, "tags": [ "physics.optics" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2406.05502v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2406.05502v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1907.07536v2", "title": "Experimental self-characterization of quantum measurements", "publishedDate": "2019-07-17T14:12:34", "content": "The accurate and reliable description of measurement devices is a central problem in both observing uniquely non-classical behaviors and realizing quantum technologies from powerful computing to precision metrology. To date quantum tomography is the prevalent tool to characterize quantum detectors. However, such a characterization relies on accurately characterized probe states, rendering reliability of the characterization lost in circular argument. Here we report a self-characterization method of quantum measurements based on reconstructing the response range, the entirety of attainable measurement outcomes, eliminating the reliance on known states. We characterize two representative measurements implemented with photonic setups and obtain fidelities above 99.99% with the conventional tomographic reconstructions. This initiates range-based techniques in characterizing quantum systems and foreshadows novel device-independent protocols of quantum information applications.", "doi": "10.1103/PhysRevLett.124.040402", "authors": [ "Aonan Zhang", "Jie Xie", "Huichao Xu", "Kaimin Zheng", "Han Zhang", "Yiu-Tung Poon", "Vlatko Vedral", "Lijian Zhang" ], "journal": "Phys. Rev. Lett. 124, 040402 (2020)", "tags": [ "quant-ph" ], "comments": "14 pages, 8 figures", "pdf_url": "http://arxiv.org/pdf/1907.07536v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1907.07536v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331418", "title": "Hydrophobic ZIF-8 nanoparticles loaded on chitosan for improved methanol adsorption from fermented wine.", "content": "Metal-organic frameworks (MOFs) have great potential for the adsorption of minor molecular alcohols in the vapor phase. However, the drawbacks of powdered MOFs, including low recyclability and problematic separation, limit their application in fermented wine. Chitosan (CS) is a low-cost, eco-friendly, moldable matrix used in the food industry. In this study, a novel CS@ZIF-8 adsorbent with excellent microporous surface area was successfully synthesized by incorporating hydrophobic ZIF-8 into CS. The results showed that CS@ZIF-8 beads had a high adsorption affinity for methanol at a Zn", "journal": "Journal of food science", "issn": [ "1750-3841" ], "authors": [ "Mibin Lin", "Jia Sha", "Zhonghao Zhu", "Penghui Ye", "Kai Zhao", "Kaijun Xiao" ], "doi": "10.1111/1750-3841.17397", "publishedDate": "2024-08-31T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331418", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2302.04397v1", "title": "Designing Workflows for Materials Characterization", "publishedDate": "2023-02-07T20:01:05", "content": "Experimental science is enabled by the combination of synthesis, imaging, and functional characterization. Synthesis of a new material is typically followed by a set of characterization methods aiming to provide feedback for optimization or discover fundamental mechanisms. However, the sequence of synthesis and characterization methods and their interpretation, or research workflow, has traditionally been driven by human intuition and is highly domain specific. Here we explore concepts of scientific workflows that emerge at the interface between theory, characterization, and imaging. We discuss the criteria by which these workflows can be constructed for special cases of multi-resolution structural imaging and structural and functional characterization. Some considerations for theory-experiment workflows are provided. We further pose that the emergence of user facilities and cloud labs disrupt the classical progression from ideation, orchestration, and execution stages of workflow development and necessitate development of universal frameworks for workflow design, including universal hyper-languages describing laboratory operation, reward functions and their integration between domains, and policy development for workflow optimization. These tools will enable knowledge-based workflow optimization, enable lateral instrumental networks, sequential and parallel orchestration of characterization between dissimilar facilities, and empower distributed research.", "doi": null, "authors": [ "Sergei V. Kalinin", "Maxim Ziatdinov", "Mahshid Ahmadi", "Ayana Ghosh", "Kevin Roccapriore", "Yongtao Liu", "Rama K. Vasudevan" ], "journal": null, "tags": [ "cond-mat.mtrl-sci" ], "comments": "33 pages; 8 figures", "pdf_url": "http://arxiv.org/pdf/2302.04397v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2302.04397v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331411", "title": "Unraveling the adsorption-limited hydrogen oxidation reaction at palladium surface via in situ electron microscopy.", "content": "Palladium (Pd) catalysts have been extensively studied for the direct synthesis of H", "journal": "Proceedings of the National Academy of Sciences of the United States of America", "issn": [ "1091-6490" ], "authors": [ "Yukun Liu", "Kunmo Koo", "Zugang Mao", "Xianbiao Fu", "Xiaobing Hu", "Vinayak P Dravid" ], "doi": "10.1073/pnas.2408277121", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331411", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2310.18970v1", "title": "TRIAGE: Characterizing and auditing training data for improved regression", "publishedDate": "2023-10-29T10:31:59", "content": "Data quality is crucial for robust machine learning algorithms, with the recent interest in data-centric AI emphasizing the importance of training data characterization. However, current data characterization methods are largely focused on classification settings, with regression settings largely understudied. To address this, we introduce TRIAGE, a novel data characterization framework tailored to regression tasks and compatible with a broad class of regressors. TRIAGE utilizes conformal predictive distributions to provide a model-agnostic scoring method, the TRIAGE score. We operationalize the score to analyze individual samples' training dynamics and characterize samples as under-, over-, or well-estimated by the model. We show that TRIAGE's characterization is consistent and highlight its utility to improve performance via data sculpting/filtering, in multiple regression settings. Additionally, beyond sample level, we show TRIAGE enables new approaches to dataset selection and feature acquisition. Overall, TRIAGE highlights the value unlocked by data characterization in real-world regression applications", "doi": null, "authors": [ "Nabeel Seedat", "Jonathan Crabbé", "Zhaozhi Qian", "Mihaela van der Schaar" ], "journal": null, "tags": [ "cs.LG" ], "comments": "Presented at NeurIPS 2023", "pdf_url": "http://arxiv.org/pdf/2310.18970v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2310.18970v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331382", "title": "Modular Synthesis of Azidobicyclo[2.1.1]hexanes via (3 + 2) Annulation of α-Substituted Vinyl Azides and Bicyclo[1.1.0]butanes.", "content": "Here, we present a mild and rapid method to access azidobicyclo[2.1.1]hexanes via formal (3 + 2) cycloaddition of α-substituted vinyl azides and bicyclo[1.1.0]butanes under Lewis acid catalysis. A wide range of α-substituted vinyl azides were tolerated under mild conditions. Notably, the resulting cycloadducts could be transformed into structurally attractive 3-azabicyclo[3.1.1]heptenes through microwave-promoted rearrangement. The utilities were highlighted by copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition of tertiary alkyl azide and further transformation of the azide and ketone groups.", "journal": "The Journal of organic chemistry", "issn": [ "1520-6904" ], "authors": [ "Sai Hu", "Yuhong Gao", "Yuming Pan", "Dongshun Ni", "Li Deng" ], "doi": "10.1021/acs.joc.4c01920", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331382", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2402.08556v2", "title": "Tensor network noise characterization for near-term quantum computers", "publishedDate": "2024-02-13T15:57:47", "content": "Characterization of noise in current near-term quantum devices is of paramount importance to fully use their computational power. However, direct quantum process tomography becomes unfeasible for systems composed of tens of qubits. A promising alternative method based on tensor networks was recently proposed [Nat. Commun. 14, 2858 (2023)]. In this paper, we adapt it for the characterization of noise channels on near-term quantum computers and investigate its performance thoroughly. In particular, we show how experimentally feasible tomographic samples are sufficient to accurately characterize realistic correlated noise models affecting individual layers of quantum circuits, and study its performance on systems composed of up to 20 qubits. Furthermore, we combine this noise characterization method with a recently proposed noise-aware tensor network error mitigation protocol for correcting outcomes in noisy circuits, resulting accurate estimations even on deep circuit instances. This positions the tensor-network-based noise characterization protocol as a valuable tool for practical error characterization and mitigation in the near-term quantum computing era.", "doi": "10.1103/PhysRevResearch.6.033217", "authors": [ "Stefano Mangini", "Marco Cattaneo", "Daniel Cavalcanti", "Sergei Filippov", "Matteo A. C. Rossi", "Guillermo García-Pérez" ], "journal": "Phys. Rev. Research 6, 033217 (2024)", "tags": [ "quant-ph" ], "comments": "Updated version matching publication (minor modifications, added\n section on SPAM errors)", "pdf_url": "http://arxiv.org/pdf/2402.08556v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2402.08556v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331381", "title": "Liquid Atmospheric Pressure Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Using a Commercial Ion Source and Orbitrap Mass Analyzer.", "content": "A liquid atmospheric pressure-matrix-assisted laser desorption/ionization (LAP-MALDI) method has been developed and applied to a commercial AP-MALDI source on a hybrid orbitrap mass analyzer. It is shown that electrospray ionization (ESI)-like mass spectra of a range of peptides and proteins can be acquired by LAP-MALDI mass spectrometry (MS) as previously demonstrated on a homemade LAP-MALDI-Q-TOF setup but without the need of any modification to the commercially available MS equipment used. Multiply charged peptide ions were recorded with a resolution of around 100,000 and a mass accuracy of less than 5 ppm. The higher resolution and mass accuracy of the orbitrap analyzer compared with previously employed Q-TOF instrumentation provided high confidence in bacterial proteoform and species identification by top-down protein analysis.", "journal": "Analytical chemistry", "issn": [ "1520-6882" ], "authors": [ "Bob Challen", "Lily R Adair", "Rainer Cramer" ], "doi": "10.1021/acs.analchem.4c04458", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331381", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1910.01156v1", "title": "Groups where the centers of the irreducible characters form a chain II", "publishedDate": "2019-10-02T18:33:55", "content": "In this paper, we determine new characterizations of nested and nested GVZ-groups, including character-free characterizations, but we additionally show that nested groups and nested GVZ-groups can be defined in terms of the existence of certain normal series.", "doi": null, "authors": [ "Shawn T. Burkett", "Mark L. Lewis" ], "journal": null, "tags": [ "math.GR", "20C15" ], "comments": "27 pages. This paper generalizes and provides a different method for\n obtaining the results in \"Characterizations of nested GVZ-groups by central\n series,\" ArXiv 1907.409", "pdf_url": "http://arxiv.org/pdf/1910.01156v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1910.01156v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331379", "title": "A Method for Treating Significant Conformational Changes in Alchemical Free Energy Simulations of Protein-Ligand Binding.", "content": "Relative binding free energy (RBFE) simulation is a rigorous approach to the calculation of quantitatively accurate binding free energy values for protein-ligand binding in which a reference binder is gradually converted to a target binder through alchemical transformation during the simulation. The success of such simulations relies on being able to accurately sample the correct conformational phase space for each alchemical state; however, this becomes a challenge when a significant conformation change occurs between the reference and target binder-receptor complexes. Increasing the simulation time and using enhanced sampling methods can be helpful, but effects can be limited, especially when the free energy barrier between conformations is high or when the correct target complex conformation is difficult to find and maintain. Current RBFE protocols seed the reference complex structure into every alchemical window of the simulation. In our study, we describe an improved protocol in which the reference structure is seeded into the first half of the alchemical windows, and the target structure is seeded into the second half of the alchemical windows. By applying information about the relevant correct end point conformations to different simulation windows from the beginning, the need for large barrier crossings or simulation prediction of the correct structures during an alchemical simulation is in many cases obviated. In the diverse cases we examine below, the simulations yielded free energy predictions that are satisfactory as compared to experiment and superior to running the simulations utilizing the conventional protocol. The method is straightforward to implement for publicly available FEP workflows.", "journal": "Journal of chemical theory and computation", "issn": [ "1549-9626" ], "authors": [ "Junzhuo Liao", "Alina P Sergeeva", "Edward D Harder", "Lingle Wang", "Jared M Sampson", "Barry Honig", "Richard A Friesner" ], "doi": "10.1021/acs.jctc.4c00954", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331379", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2008.09364v1", "title": "A characterization of Conway-Coxeter friezes of zigzag type by rational links", "publishedDate": "2020-08-21T08:18:47", "content": "The present paper show that Conway-Coxeter friezes of zigzag type are characterized by (unoriented) rational links. As an application of this characterization Jones polynomial can be defined for Conway-Coxeter friezes of zigzag type. This gives a new method for computing the Jones polynomial for oriented rational links.", "doi": null, "authors": [ "Takeyoshi Kogiso", "Michihisa Wakui" ], "journal": null, "tags": [ "math.GT", "57M27, 57M25, 11A55, 13F60" ], "comments": "26 pages", "pdf_url": "http://arxiv.org/pdf/2008.09364v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2008.09364v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4d0q", "title": "Hyaluronan Binding Module of the Streptococcal Pneumoniae Hyaluronate Lyase", "content": "Conformational analysis of the Streptococcus pneumoniae hyaluronate lyase and characterization of its hyaluronan-specific carbohydrate-binding module. - Suits MDL, Pluvinage B, Law A, Liu Y, Palma AS, Chai W, Feizi T, Boraston AB J Biol Chem (289) 27264-27277 (2014)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4d0q_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4d0q", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4am5", "title": "Bacterioferritin from Blastochloris viridis", "content": "Structural characterization of bacterioferritin from Blastochloris viridis. - Wahlgren WY, Omran H, von Stetten D, Royant A, van der Post S, Katona G PLoS One (7) e46992 (2012)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4am5_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4am5", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331462", "title": "Ablation of Supraventricular Arrhythmias With as Low as Reasonably Achievable X-Ray exposure (AALARA): Results of Prospective, Observational, Multicenter, Multinational, Open-Label Registry Study on Real World Data Using Routine Ensite 3D Mapping During SVT Ablation.", "content": "The reduction of fluoroscopic exposure during catheter ablation of supraventricular arrhythmias is widely adopted by experienced electrophysiology physicians with a relatively short learning curve and is becoming the standard of care in many parts of the world. While observational studies in the United States and some parts of Western Europe have evaluated the minimal fluoroscopic approach, there are scarce real-world data for this technique and the generalizability of outcomes in other economic regions.", "journal": "Pacing and clinical electrophysiology : PACE", "issn": [ "1540-8159" ], "authors": [ "Mohammad Amin", "Ayan Abdrakhmanov", "Evgeniy Kropotkin", "Vasil Traykov", "Zoltán Salló", "László Gellér", "Faizel Lorgat", "Oleg Sapelnikov", "Ondrej Toman", "Khalid Al-Muti", "Mohamed Aljaabari", "Adrian Bystriansky", "László Környei", "Nebojša Mujović", "Stefanie Simons", "Nándor Szegedi" ], "doi": "10.1111/pace.15075", "publishedDate": "2024-09-04T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331462", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.00799v1", "title": "Practical Phase Retrieval Using Double Deep Image Priors", "publishedDate": "2022-11-02T00:37:51", "content": "Phase retrieval (PR) concerns the recovery of complex phases from complex magnitudes. We identify the connection between the difficulty level and the number and variety of symmetries in PR problems. We focus on the most difficult far-field PR (FFPR), and propose a novel method using double deep image priors. In realistic evaluation, our method outperforms all competing methods by large margins. As a single-instance method, our method requires no training data and minimal hyperparameter tuning, and hence enjoys good practicality.", "doi": null, "authors": [ "Zhong Zhuang", "David Yang", "Felix Hofmann", "David Barmherzig", "Ju Sun" ], "journal": null, "tags": [ "cs.CV", "cs.LG", "eess.IV" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.00799v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.00799v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331444", "title": "Silicone sling surgery for congenital ptosis: Tarsal tunnel technique.", "content": "This was a prospective, interventional, comparative study conducted on patients with congenital simple severe ptosis. A novel method of silicone rod fixation to the tarsus (tarsal tunnel technique, group 1) was done compared with a conventional technique of silicone rod fixation (suture fixation technique, group 2) in frontalis suspension surgery. A total of 30 patients were randomized into two groups of 15 patients each. Postoperatively, MRD1, vertical palpebral aperture, and eyelid fold height were comparable in both groups till the last follow-up with stability in eyelid position. Patient satisfaction scores showed similar results with good-fair satisfaction grading in 13 patients in group 1 and 11 patients in group 2 at 6 months follow-up. No significant complications occurred in either group. Tarsal tunnel fixation of silicone rods is a novel method in sling surgery with optimal cosmetic and function outcomes. Further long-term studies are needed to validate the results of the technique.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Neelam Pushker", "Manish Mahabir", "Sahil Agrawal", "Mandeep Singh Bajaj" ], "doi": "10.4103/IJO.IJO_2766_23", "publishedDate": "2024-03-10T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331444", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2003.00220v1", "title": "Effective Localization Using Double Ideal Quotient and Its Implementation", "publishedDate": "2020-02-29T09:40:12", "content": "In this paper, we propose a new method for localization of polynomial ideal, which we call \"Local Primary Algorithm\". For an ideal $I$ and a prime ideal $P$, our method computes a $P$-primary component of $I$ after checking if $P$ is associated with $I$ by using \"double ideal quotient\" $(I:(I:P))$ and its variants which give us a lot of information about localization of $I$.", "doi": "10.1007/978-3-319-99639-4_19", "authors": [ "Yuki Ishihara", "Kazuhiro Yokoyama" ], "journal": "Proc. CASC 2018, LNCS 11077, pp.272-287, Springer 2018", "tags": [ "math.AC", "cs.SC" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2003.00220v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2003.00220v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331443", "title": "Evaluation of antioxidant status of lens epithelial cells in cataract patients.", "content": "The main factor that causes cataracts is the increased oxidative stress and imbalance of an antioxidant defense mechanism, which leads to significant changes in the lens microarchitecture. Senile cataract is the most common type of acquired cataracts due to aging.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Kranti Santosh Sorte Gawali", "Avinash Namdeo Jadhao", "Trupti Diwan Ramteke", "Neelam Jayant Patil", "Harshal Sahare" ], "doi": "10.4103/IJO.IJO_19_24", "publishedDate": "2024-04-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331443", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1901.09753v1", "title": "On maximum of Gaussian process with unique maximum point of its variance", "publishedDate": "2019-01-28T15:54:44", "content": "Gaussian random processes which variances reach theirs maximum values at unique points are considered. Exact asymptotic behaviors of probabilities of large absolute maximums of theirs trajectories have been evaluated using Double Sum Method under the widest possible conditions.", "doi": null, "authors": [ "E. Hashorva", "S. Kobelkov", "V. I. Piterbarg" ], "journal": null, "tags": [ "math.PR" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1901.09753v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1901.09753v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331437", "title": "Analysis of anthropometric measurements taken from the periocular region in healthy young individuals with different somatotypes.", "content": "Anthropometric parameters related with the periocular region (PR) have gained great importance with the optical technology used in the treatment of eye defects. They have also become important parameters that determine the limits of treatment in aesthetic surgery procedures in PR and the treatment of orbital diseases. The aim of this study was to examine the relationship of PR measurements with somatotype.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Sıdıka Karaketir", "Demet Şencan", "Serdar Çolakoğlu", "Deniz Şenol" ], "doi": "10.4103/IJO.IJO_2836_23", "publishedDate": "2024-02-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331437", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2009.07217v1", "title": "Low Energy Light Yield of Fast Plastic Scintillators", "publishedDate": "2020-09-15T16:51:23", "content": "Compact neutron imagers using double-scatter kinematic reconstruction are being designed for localization and characterization of special nuclear material. These neutron imaging systems rely on scintillators with a rapid prompt temporal response as the detection medium. As n-p elastic scattering is the primary mechanism for light generation by fast neutron interactions in organic scintillators, proton light yield data are needed for accurate assessment of scintillator performance. The proton light yield of a series of commercial fast plastic organic scintillators---EJ-200, EJ-204, and EJ-208---was measured via a double time-of-flight technique at the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory. Using a tunable deuteron breakup neutron source, target scintillators housed in a dual photomultiplier tube configuration, and an array of pulse-shape-discriminating observation scintillators, the fast plastic scintillator light yield was measured over a broad and continuous energy range down to proton recoil energies of approximately 50 keV. This work provides key input to event reconstruction algorithms required for utilization of these materials in emerging neutron imaging modalities.", "doi": "10.1016/j.nima.2018.10.122", "authors": [ "T. A. Laplace", "B. L. Goldblum", "J. A. Brown", "D. L. Bleuel", "C. A. Brand", "G. Gabella", "T. Jordan", "C. Moore", "N. Munshi", "Z. W. Sweger", "A. Ureche", "E. Brubaker" ], "journal": "Nuclear Instruments and Methods in Physics Research Section A:\n Accelerators, Spectrometers, Detectors and Associated Equipment 954 (2020):\n 161444", "tags": [ "physics.ins-det" ], "comments": "15 pages, 6 figures", "pdf_url": "http://arxiv.org/pdf/2009.07217v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2009.07217v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1904.05563v1", "title": "On maximum of Gaussian random field having unique maximum point of its variance", "publishedDate": "2019-04-11T07:20:37", "content": "Gaussian random fields on Euclidean spaces whose variances reach their maximum values at unique points are considered. Exact asymptotic behaviors of probabilities of large absolute maximum of theirs trajectories have been evaluated using Double Sum Method under the widest possible conditions.", "doi": null, "authors": [ "Sergey G. Kobelkov", "Vladimir I. Piterbarg" ], "journal": null, "tags": [ "math.PR" ], "comments": "19 pages", "pdf_url": "http://arxiv.org/pdf/1904.05563v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1904.05563v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331418", "title": "Hydrophobic ZIF-8 nanoparticles loaded on chitosan for improved methanol adsorption from fermented wine.", "content": "Metal-organic frameworks (MOFs) have great potential for the adsorption of minor molecular alcohols in the vapor phase. However, the drawbacks of powdered MOFs, including low recyclability and problematic separation, limit their application in fermented wine. Chitosan (CS) is a low-cost, eco-friendly, moldable matrix used in the food industry. In this study, a novel CS@ZIF-8 adsorbent with excellent microporous surface area was successfully synthesized by incorporating hydrophobic ZIF-8 into CS. The results showed that CS@ZIF-8 beads had a high adsorption affinity for methanol at a Zn", "journal": "Journal of food science", "issn": [ "1750-3841" ], "authors": [ "Mibin Lin", "Jia Sha", "Zhonghao Zhu", "Penghui Ye", "Kai Zhao", "Kaijun Xiao" ], "doi": "10.1111/1750-3841.17397", "publishedDate": "2024-08-31T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331418", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1910.01465v2", "title": "Reducing Overestimation Bias in Multi-Agent Domains Using Double Centralized Critics", "publishedDate": "2019-10-03T13:40:46", "content": "Many real world tasks require multiple agents to work together. Multi-agent reinforcement learning (RL) methods have been proposed in recent years to solve these tasks, but current methods often fail to efficiently learn policies. We thus investigate the presence of a common weakness in single-agent RL, namely value function overestimation bias, in the multi-agent setting. Based on our findings, we propose an approach that reduces this bias by using double centralized critics. We evaluate it on six mixed cooperative-competitive tasks, showing a significant advantage over current methods. Finally, we investigate the application of multi-agent methods to high-dimensional robotic tasks and show that our approach can be used to learn decentralized policies in this domain.", "doi": null, "authors": [ "Johannes Ackermann", "Volker Gabler", "Takayuki Osa", "Masashi Sugiyama" ], "journal": null, "tags": [ "cs.LG", "cs.AI", "cs.MA", "stat.ML" ], "comments": "Accepted for the Deep RL Workshop at NeurIPS 2019; Changes for v2:\n Changed Figures 3,4, due to an error in the implementation of MATD3. Please\n refer to this version for fair evaluation", "pdf_url": "http://arxiv.org/pdf/1910.01465v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1910.01465v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331411", "title": "Unraveling the adsorption-limited hydrogen oxidation reaction at palladium surface via in situ electron microscopy.", "content": "Palladium (Pd) catalysts have been extensively studied for the direct synthesis of H", "journal": "Proceedings of the National Academy of Sciences of the United States of America", "issn": [ "1091-6490" ], "authors": [ "Yukun Liu", "Kunmo Koo", "Zugang Mao", "Xianbiao Fu", "Xiaobing Hu", "Vinayak P Dravid" ], "doi": "10.1073/pnas.2408277121", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331411", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2010.09465v1", "title": "A Nesterov's Accelerated quasi-Newton method for Global Routing using Deep Reinforcement Learning", "publishedDate": "2020-10-15T07:30:17", "content": "Deep Q-learning method is one of the most popularly used deep reinforcement learning algorithms which uses deep neural networks to approximate the estimation of the action-value function. Training of the deep Q-network (DQN) is usually restricted to first order gradient based methods. This paper attempts to accelerate the training of deep Q-networks by introducing a second order Nesterov's accelerated quasi-Newton method. We evaluate the performance of the proposed method on deep reinforcement learning using double DQNs for global routing. The results show that the proposed method can obtain better routing solutions compared to the DQNs trained with first order Adam and RMSprop methods.", "doi": null, "authors": [ "S. Indrapriyadarsini", "Shahrzad Mahboubi", "Hiroshi Ninomiya", "Takeshi Kamio", "Hideki Asai" ], "journal": null, "tags": [ "cs.LG" ], "comments": "Accepted in NOLTA 2020", "pdf_url": "http://arxiv.org/pdf/2010.09465v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2010.09465v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331382", "title": "Modular Synthesis of Azidobicyclo[2.1.1]hexanes via (3 + 2) Annulation of α-Substituted Vinyl Azides and Bicyclo[1.1.0]butanes.", "content": "Here, we present a mild and rapid method to access azidobicyclo[2.1.1]hexanes via formal (3 + 2) cycloaddition of α-substituted vinyl azides and bicyclo[1.1.0]butanes under Lewis acid catalysis. A wide range of α-substituted vinyl azides were tolerated under mild conditions. Notably, the resulting cycloadducts could be transformed into structurally attractive 3-azabicyclo[3.1.1]heptenes through microwave-promoted rearrangement. The utilities were highlighted by copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition of tertiary alkyl azide and further transformation of the azide and ketone groups.", "journal": "The Journal of organic chemistry", "issn": [ "1520-6904" ], "authors": [ "Sai Hu", "Yuhong Gao", "Yuming Pan", "Dongshun Ni", "Li Deng" ], "doi": "10.1021/acs.joc.4c01920", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331382", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2101.06452v1", "title": "Hyperfine measurement of $6\\text{P}_{1/2}$ state in $^{87}\\text{Rb}$ using double resonance on blue and IR transition", "publishedDate": "2021-01-16T14:58:15", "content": "In this paper, we present the spectroscopy of 6P$_{1/2}$ state in $^{87}$Rb using double resonance technique at $780~\\text{nm}$ and $421~\\text{nm}$. The double resonance technique is implemented using electromagnetically induced transparency (EIT) and optical pumping methods. Using these spectroscopy methods, we have measured the hyperfine splitting of 6P$_{1/2}$ state with precision of $<$400~kHz which agrees well with other spectroscopy methods such as electrical discharge and saturated absorption spectroscopy at $421~\\text{nm}$.", "doi": "10.1088/1361-6455/ab7670", "authors": [ "Elijah Ogaro Nyakang'o", "Dangka Shylla", "Vasant Natarajan", "Kanhaiya Pandey" ], "journal": "J. Phys. B: At. Mol. Opt. Phys. 53 (2020) 095001", "tags": [ "physics.atom-ph" ], "comments": "6 pages, 5 figures", "pdf_url": "http://arxiv.org/pdf/2101.06452v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2101.06452v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331381", "title": "Liquid Atmospheric Pressure Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Using a Commercial Ion Source and Orbitrap Mass Analyzer.", "content": "A liquid atmospheric pressure-matrix-assisted laser desorption/ionization (LAP-MALDI) method has been developed and applied to a commercial AP-MALDI source on a hybrid orbitrap mass analyzer. It is shown that electrospray ionization (ESI)-like mass spectra of a range of peptides and proteins can be acquired by LAP-MALDI mass spectrometry (MS) as previously demonstrated on a homemade LAP-MALDI-Q-TOF setup but without the need of any modification to the commercially available MS equipment used. Multiply charged peptide ions were recorded with a resolution of around 100,000 and a mass accuracy of less than 5 ppm. The higher resolution and mass accuracy of the orbitrap analyzer compared with previously employed Q-TOF instrumentation provided high confidence in bacterial proteoform and species identification by top-down protein analysis.", "journal": "Analytical chemistry", "issn": [ "1520-6882" ], "authors": [ "Bob Challen", "Lily R Adair", "Rainer Cramer" ], "doi": "10.1021/acs.analchem.4c04458", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331381", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1711.03659v1", "title": "Frequency-comb based double-quantum two-dimensional coherent spectroscopy identifies collective hyperfine resonances in atomic vapor induced by dipole-dipole interactions", "publishedDate": "2017-11-10T01:06:56", "content": "Frequency comb based multidimensional coherent spectroscopy is a novel optical method that enables high resolution measurement in a short acquisition time. The method's resolution makes multidimensional coherent spectroscopy relevant for atomic systems that have narrow resonances. We use double-quantum multidimensional coherent spectroscopy to reveal collective hyperfine resonances in rubidium vapor at 100 C induced by dipole-dipole interactions. We observe tilted lineshapes in the double-quantum 2D spectra, which has never been reported for Doppler-broadened systems. The tilted lineshapes suggest that the signal is predominately from the interacting atoms that have near zero relative velocity.", "doi": "10.1103/PhysRevLett.120.233401", "authors": [ "Bachana Lomsadze", "Steven T. Cundiff" ], "journal": "Phys. Rev. Lett. 120, 233401 (2018)", "tags": [ "physics.atom-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1711.03659v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1711.03659v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331379", "title": "A Method for Treating Significant Conformational Changes in Alchemical Free Energy Simulations of Protein-Ligand Binding.", "content": "Relative binding free energy (RBFE) simulation is a rigorous approach to the calculation of quantitatively accurate binding free energy values for protein-ligand binding in which a reference binder is gradually converted to a target binder through alchemical transformation during the simulation. The success of such simulations relies on being able to accurately sample the correct conformational phase space for each alchemical state; however, this becomes a challenge when a significant conformation change occurs between the reference and target binder-receptor complexes. Increasing the simulation time and using enhanced sampling methods can be helpful, but effects can be limited, especially when the free energy barrier between conformations is high or when the correct target complex conformation is difficult to find and maintain. Current RBFE protocols seed the reference complex structure into every alchemical window of the simulation. In our study, we describe an improved protocol in which the reference structure is seeded into the first half of the alchemical windows, and the target structure is seeded into the second half of the alchemical windows. By applying information about the relevant correct end point conformations to different simulation windows from the beginning, the need for large barrier crossings or simulation prediction of the correct structures during an alchemical simulation is in many cases obviated. In the diverse cases we examine below, the simulations yielded free energy predictions that are satisfactory as compared to experiment and superior to running the simulations utilizing the conventional protocol. The method is straightforward to implement for publicly available FEP workflows.", "journal": "Journal of chemical theory and computation", "issn": [ "1549-9626" ], "authors": [ "Junzhuo Liao", "Alina P Sergeeva", "Edward D Harder", "Lingle Wang", "Jared M Sampson", "Barry Honig", "Richard A Friesner" ], "doi": "10.1021/acs.jctc.4c00954", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331379", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.00762v1", "title": "Deep Unsupervised Common Representation Learning for LiDAR and Camera Data using Double Siamese Networks", "publishedDate": "2020-01-03T08:53:27", "content": "Domain gaps of sensor modalities pose a challenge for the design of autonomous robots. Taking a step towards closing this gap, we propose two unsupervised training frameworks for finding a common representation of LiDAR and camera data. The first method utilizes a double Siamese training structure to ensure consistency in the results. The second method uses a Canny edge image guiding the networks towards a desired representation. All networks are trained in an unsupervised manner, leaving room for scalability. The results are evaluated using common computer vision applications, and the limitations of the proposed approaches are outlined.", "doi": null, "authors": [ "Andreas Bühler", "Niclas Vödisch", "Mathias Bürki", "Lukas Schaupp" ], "journal": null, "tags": [ "cs.CV", "cs.RO" ], "comments": "8 pages, CoRL 2019 template used", "pdf_url": "http://arxiv.org/pdf/2001.00762v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.00762v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7bna", "title": "ANISOTROPIC THERMAL-PARAMETER REFINEMENT OF THE DNA DODECAMER CGCGAATTCGCG BY THE SEGMENTED RIGID-BODY METHOD", "content": "Anisotropic Thermal-Parameter Refinement of the DNA Dodecamer CGCGAATTCGCG by the Segmented Rigid-Body Method - Holbrook SR, Dickerson RE, Kim S-H Acta Crystallogr., B (41) 255-262 (1985)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7bna_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7bna", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7wkj", "title": "A COVID-19 T-cell response detection method based on a newly identified human CD8+ T cell epitope from SARS-CoV-2-Hubei Province, 2021.", "content": "A COVID-19 T-Cell Response Detection Method Based on a Newly Identified Human CD8+ T Cell Epitope from SARS-CoV-2 - Hubei Province, China, 2021. - Zhang J, Lu D, Li M, Liu MS, Yao SJ, Zhan JB, Liu J, Gao GF China CDC Wkly (4) 83-87 (2022)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7wkj_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7wkj", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2mor", "title": "A tensor-free method for the structural and dynamical refinement of proteins using residual dipolar couplings", "content": "A tensor-free method for the structural and dynamical refinement of proteins using residual dipolar couplings. - Camilloni C, Vendruscolo M J Phys Chem B (119) 653-61 (2015)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2mor_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2mor", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2nr2", "title": "The MUMO (minimal under-restraining minimal over-restraining) method for the determination of native states ensembles of proteins", "content": "The MUMO (minimal under-restraining minimal over-restraining) method for the determination of native state ensembles of proteins. - Richter B, Gsponer J, Varnai P, Salvatella X, Vendruscolo M J Biomol NMR (37) 117-35 (2007)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2nr2_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2nr2", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h56", "title": "Crystal structure of endothiapepsin PF_cryo3 in complex with AC39729 at 100 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h56_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h56", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h5w", "title": "Crystal structure of endothiapepsin PF_RT2 in complex with JFD03909 at 296 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h5w_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h5w", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h58", "title": "Crystal structure of endothiapepsin PF_RT2 in complex with AC39729 at 296 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h58_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h58", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/7h5u", "title": "Crystal structure of endothiapepsin PF_cryo3 in complex with JFD03909 at 100 K", "content": "Cryo2RT: a high-throughput method for room-temperature macromolecular crystallography from cryocooled crystals. - Huang C-Y, Aumonier S, Olieric V, Wang M Acta Crystallogr D Struct Biol (80) 620-628 (2024)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/7h5u_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/7h5u", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331462", "title": "Ablation of Supraventricular Arrhythmias With as Low as Reasonably Achievable X-Ray exposure (AALARA): Results of Prospective, Observational, Multicenter, Multinational, Open-Label Registry Study on Real World Data Using Routine Ensite 3D Mapping During SVT Ablation.", "content": "The reduction of fluoroscopic exposure during catheter ablation of supraventricular arrhythmias is widely adopted by experienced electrophysiology physicians with a relatively short learning curve and is becoming the standard of care in many parts of the world. While observational studies in the United States and some parts of Western Europe have evaluated the minimal fluoroscopic approach, there are scarce real-world data for this technique and the generalizability of outcomes in other economic regions.", "journal": "Pacing and clinical electrophysiology : PACE", "issn": [ "1540-8159" ], "authors": [ "Mohammad Amin", "Ayan Abdrakhmanov", "Evgeniy Kropotkin", "Vasil Traykov", "Zoltán Salló", "László Gellér", "Faizel Lorgat", "Oleg Sapelnikov", "Ondrej Toman", "Khalid Al-Muti", "Mohamed Aljaabari", "Adrian Bystriansky", "László Környei", "Nebojša Mujović", "Stefanie Simons", "Nándor Szegedi" ], "doi": "10.1111/pace.15075", "publishedDate": "2024-09-04T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331462", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2310.06184v2", "title": "A Brief Review of Single Event Burnout Failure Mechanisms and Design Tolerances of Silicon Carbide MOSFETs", "publishedDate": "2023-10-09T22:24:06", "content": "Radiation hardening of the MOSFET is of the highest priority for sustaining high-power systems in the space radiation environment. SiC-based power electronics are being looked at as a strong alternative for high power spaceborne power electronic systems. The SiC MOSFET has been shown to be most prone to SEB of the radiation effects. The knowledge of SiC MOSFET device degradation and failure mechanisms are reviewed. Additionally, the viability of rad-tolerant SiC MOSFET designs and the methods of SEB simulation are evaluated. A merit system is proposed to consider the performance of radiation tolerance and nominal electrical performance. Criteria needed for high-fidelity SEB simulation are also reviewed. This paper stands as a necessary analytical review to intercede the development of rad-hard power devices for space and extreme environment applications.", "doi": "10.3390/electronics13081414", "authors": [ "Christopher A. Grome", "Wei Ji" ], "journal": "Electronics 2024, 13, 1414", "tags": [ "physics.ins-det" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2310.06184v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2310.06184v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331444", "title": "Silicone sling surgery for congenital ptosis: Tarsal tunnel technique.", "content": "This was a prospective, interventional, comparative study conducted on patients with congenital simple severe ptosis. A novel method of silicone rod fixation to the tarsus (tarsal tunnel technique, group 1) was done compared with a conventional technique of silicone rod fixation (suture fixation technique, group 2) in frontalis suspension surgery. A total of 30 patients were randomized into two groups of 15 patients each. Postoperatively, MRD1, vertical palpebral aperture, and eyelid fold height were comparable in both groups till the last follow-up with stability in eyelid position. Patient satisfaction scores showed similar results with good-fair satisfaction grading in 13 patients in group 1 and 11 patients in group 2 at 6 months follow-up. No significant complications occurred in either group. Tarsal tunnel fixation of silicone rods is a novel method in sling surgery with optimal cosmetic and function outcomes. Further long-term studies are needed to validate the results of the technique.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Neelam Pushker", "Manish Mahabir", "Sahil Agrawal", "Mandeep Singh Bajaj" ], "doi": "10.4103/IJO.IJO_2766_23", "publishedDate": "2024-03-10T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331444", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1810.11452v1", "title": "Analysis and Development of SiC MOSFET Boost Converter as Solar PV Pre-regulator", "publishedDate": "2018-10-24T07:55:26", "content": "Renewable energy source such as photovoltaic (PV) cell generates power from the sun light by converting solar power to electrical power with no moving parts and less maintenance. A single photovoltaic cell produces voltage of low level. In order to boost up the voltage, a DC-DC boost converter is used. In order to use this DC-DC converter for high voltage and high frequency applications, Silicon Carbide (SiC) device is most preferred because of larger current carrying capability, higher voltage blocking capability, high operating temperature and less static and dynamic losses than the traditional silicon (Si) power switches. In the proposed work, the static and dynamic characteristics of SiC MOSFET for different temperatures are observed. A SiC MOSFET based boost converter is investigated which is powered by PV source. This DC - DC converter is controlled using a Pulse-Width Method (PWM) and the duty cycle d is calculated for tracking the maximum power point using incremental conductance algorithm of the PV systems implemented in FPGA. Simulation studies are carried out in MATLAB/SIMULINK.A prototype of the SiC converter is built and the results are verified experimentally. The performance parameters of the proposed converter such as output voltage ripple input current ripple and losses are computed and it is compared with the classical silicon (Si) MOSFET converter.", "doi": null, "authors": [ "A. Bharathi sankar", "R. Seyezhai" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mes-hall", "eess.SP", "physics.ins-det" ], "comments": "24 pages", "pdf_url": "http://arxiv.org/pdf/1810.11452v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1810.11452v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331443", "title": "Evaluation of antioxidant status of lens epithelial cells in cataract patients.", "content": "The main factor that causes cataracts is the increased oxidative stress and imbalance of an antioxidant defense mechanism, which leads to significant changes in the lens microarchitecture. Senile cataract is the most common type of acquired cataracts due to aging.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Kranti Santosh Sorte Gawali", "Avinash Namdeo Jadhao", "Trupti Diwan Ramteke", "Neelam Jayant Patil", "Harshal Sahare" ], "doi": "10.4103/IJO.IJO_19_24", "publishedDate": "2024-04-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331443", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.15174v1", "title": "A Guideline for Silicon Carbide MOSFET Thermal Characterization based on Source-Drain Voltage", "publishedDate": "2022-11-28T09:34:45", "content": "Thermal transient measurement based on source-drain voltage is a standard method to characterize thermal properties of silicon semiconductors but is doubtful to be directly applied to silicon carbide (SiC) devices. To evaluate its feasibility and limitations, this paper conducts a comprehensive investigation into its accuracy, resolution, and stability towards yielding the structure information of SiC MOSFET using the source-drain voltage as the temperature sensitive electrical parameter. The whole characterization process involves two main procedures and associated key testing parameters, such as gate voltages, sensing and heating currents, etc. Their impacts on both the static and dynamic performances are also investigated with the aim of providing a guideline for conducting a reproducible thermal transient measurement for SiC MOSFETs.", "doi": null, "authors": [ "Yi Zhang", "Yichi Zhang", "Zhiliang Xu", "Zhongxu Wang", "Hon Wong", "Zhebie Lu", "Antonio Caruso" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.15174v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.15174v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331437", "title": "Analysis of anthropometric measurements taken from the periocular region in healthy young individuals with different somatotypes.", "content": "Anthropometric parameters related with the periocular region (PR) have gained great importance with the optical technology used in the treatment of eye defects. They have also become important parameters that determine the limits of treatment in aesthetic surgery procedures in PR and the treatment of orbital diseases. The aim of this study was to examine the relationship of PR measurements with somatotype.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Sıdıka Karaketir", "Demet Şencan", "Serdar Çolakoğlu", "Deniz Şenol" ], "doi": "10.4103/IJO.IJO_2836_23", "publishedDate": "2024-02-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331437", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2311.07029v1", "title": "Accurate Time-segmented Loss Model for SiC MOSFETs in Electro-thermal Multi-Rate Simulation", "publishedDate": "2023-11-13T02:28:11", "content": "Compared with silicon (Si) power devices, Silicon carbide (SiC) devices have the advantages of fast switching speed and low on-resistance. However, the effects of non-ideal characteristics of SiC MOSFETs and stray parameters (especially parasitic inductance) on switching losses need to be further evaluated. In this paper, a transient loss model based on SiC MOSFET and SiC Schottky barrier diode (SBD) switching pairs is proposed. The transient process analysis is simplified by time segmentation of the transient process of power switching devices. The electro-thermal simulation calculates the junction temperature and updates the temperature-related parameters with the proposed loss model and the thermal network model. A multi-rate data exchange strategy is proposed to solve the problem of disparity in timescales between circuit simulation and thermal network simulation. The CREE CMF20120D SiC MOSFET device is used for the experimental verification. The experimental results verify the accuracy of the model which provides guidance for the circuit design of SiC MOSFETs. All the parameters of the loss model can be extracted from the datasheet, which is practical in power electronics design.", "doi": null, "authors": [ "Jialin Zheng", "Zhengming Zhao", "Han Xu", "Weicheng Liu", "Yangbin Zeng" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2311.07029v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2311.07029v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2201.03821v1", "title": "Dipole Scattering at the Interface: The Origin of Low Mobility observed in SiC MOSFETs", "publishedDate": "2022-01-11T07:59:48", "content": "In this work, the origin of the low free electron mobility in SiC MOSFETs is investigated using the scattering theory of two-dimensional electron gases. We first establish that neither phonon scattering nor Coulomb scattering can be the cause of the low observed mobility in SiC MOSFETs; we establish this fact by comparing the theoretically calculated mobility considering these effects with experimental observations. By considering the threshold voltages and the effective field dependence of the mobility in SiC MOSFETs, it is concluded that the scattering centers of the dominant mechanism are electrically neutral and exhibit a short-range scattering potential. By considering charge distribution around a neutral defect at the interface, it is established that an electric dipole induced by the defect can act as a short-range scattering potential. We then calculate the mobility in SiC MOSFETs assuming that there exist a high density of dipoles at the interface. The calculated dipole-scattering-limited mobility shows a similar dependence on the effective field dependence to that observed in experimental results. Thus, we conclude that scattering induced by a high density of electric dipoles at the interface is dominant cause of the low mobility in SiC MOSFETs.", "doi": "10.1063/5.0086172", "authors": [ "Tetsuo Hatakeyama", "Hirohisa Hirai", "Mitsuru Simetani", "Dai Okamoto", "Mitsuo Okamoto", "Shinsuke Harada" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "16pages, 3 figures", "pdf_url": "http://arxiv.org/pdf/2201.03821v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2201.03821v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331418", "title": "Hydrophobic ZIF-8 nanoparticles loaded on chitosan for improved methanol adsorption from fermented wine.", "content": "Metal-organic frameworks (MOFs) have great potential for the adsorption of minor molecular alcohols in the vapor phase. However, the drawbacks of powdered MOFs, including low recyclability and problematic separation, limit their application in fermented wine. Chitosan (CS) is a low-cost, eco-friendly, moldable matrix used in the food industry. In this study, a novel CS@ZIF-8 adsorbent with excellent microporous surface area was successfully synthesized by incorporating hydrophobic ZIF-8 into CS. The results showed that CS@ZIF-8 beads had a high adsorption affinity for methanol at a Zn", "journal": "Journal of food science", "issn": [ "1750-3841" ], "authors": [ "Mibin Lin", "Jia Sha", "Zhonghao Zhu", "Penghui Ye", "Kai Zhao", "Kaijun Xiao" ], "doi": "10.1111/1750-3841.17397", "publishedDate": "2024-08-31T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331418", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2212.13211v1", "title": "Adaptive Control of Surge Impedance for Electric Motors in Motor Drive Systems", "publishedDate": "2022-12-26T16:40:55", "content": "This article studies the possibility of controlling the surge impedance of the electric motor in motor drives. The existing solution to suppress (or eliminate) the reflected wave impact on the motor insulation run by a Si-IGBT or SiC-MOSFET-based drive is to use either a sinewave filter or dv/dt filter. The alternative solution suggested in this article is to implement a high-bandwidth electronic circuit at the end of the cable or at the motor terminals to match the surge impedance of the cable and motor. The high-frequency voltage ringing due to the reflected waves in motor drives is around 1 MHz, depending on the cable parameters and the length of the cable. In the proposed method, the electronic circuit can quickly detect the dv/dt rise and fall edges and adjust the electronic circuit equivalent impedance when pulses arrive the motor terminals. Thus, the cable and motor surge impedances can be matched over a short time to prevent reflected waves. As a result, the leakage currents passing through the ball bearing and overvoltage stress on the motor insulation can be suppressed significantly.", "doi": null, "authors": [ "Fahmid Sadeque", "Fariba Fateh", "JiangBiao He", "Behrooz Mirafzal" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2212.13211v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2212.13211v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331382", "title": "Modular Synthesis of Azidobicyclo[2.1.1]hexanes via (3 + 2) Annulation of α-Substituted Vinyl Azides and Bicyclo[1.1.0]butanes.", "content": "Here, we present a mild and rapid method to access azidobicyclo[2.1.1]hexanes via formal (3 + 2) cycloaddition of α-substituted vinyl azides and bicyclo[1.1.0]butanes under Lewis acid catalysis. A wide range of α-substituted vinyl azides were tolerated under mild conditions. Notably, the resulting cycloadducts could be transformed into structurally attractive 3-azabicyclo[3.1.1]heptenes through microwave-promoted rearrangement. The utilities were highlighted by copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition of tertiary alkyl azide and further transformation of the azide and ketone groups.", "journal": "The Journal of organic chemistry", "issn": [ "1520-6904" ], "authors": [ "Sai Hu", "Yuhong Gao", "Yuming Pan", "Dongshun Ni", "Li Deng" ], "doi": "10.1021/acs.joc.4c01920", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331382", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2407.13370v2", "title": "Complementary two dimensional carrier profiles of 4H-SiC MOSFETs by Scanning Spreading Resistance Microscopy and Scanning Capacitance Microscopy", "publishedDate": "2024-07-18T10:26:15", "content": "This paper reports the results presented in an invited poster during the International Conference on Silicon Carbide and Related Materials (ICSCRM) 2023 held in Sorrento, Italy. The suitability of scanning probe methods based on atomic force microscopy (AFM) measurements is explored to investigate with high spatial resolution the elementary cell of 4H-SiC power MOSFETs. The two-dimensional (2D) cross-sectional maps demonstrated a high spatial resolution of about 5 nm using the SSRM capabilities. Furthermore, the SCM capabilities enabled visualizing the fluctuations of charge carrier concentration across the different parts of the MOSFETs elementary cell.", "doi": null, "authors": [ "Patrick Fiorenza", "Marco Zignale", "Edoardo. Zanetti", "Mario S. Alessandrino", "Beatrice Carbone", "Alfio Guarnera", "Mario Saggio", "Filippo Giannazzo", "Fabrizio Roccaforte" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mtrl-sci" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2407.13370v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2407.13370v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331381", "title": "Liquid Atmospheric Pressure Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Using a Commercial Ion Source and Orbitrap Mass Analyzer.", "content": "A liquid atmospheric pressure-matrix-assisted laser desorption/ionization (LAP-MALDI) method has been developed and applied to a commercial AP-MALDI source on a hybrid orbitrap mass analyzer. It is shown that electrospray ionization (ESI)-like mass spectra of a range of peptides and proteins can be acquired by LAP-MALDI mass spectrometry (MS) as previously demonstrated on a homemade LAP-MALDI-Q-TOF setup but without the need of any modification to the commercially available MS equipment used. Multiply charged peptide ions were recorded with a resolution of around 100,000 and a mass accuracy of less than 5 ppm. The higher resolution and mass accuracy of the orbitrap analyzer compared with previously employed Q-TOF instrumentation provided high confidence in bacterial proteoform and species identification by top-down protein analysis.", "journal": "Analytical chemistry", "issn": [ "1520-6882" ], "authors": [ "Bob Challen", "Lily R Adair", "Rainer Cramer" ], "doi": "10.1021/acs.analchem.4c04458", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331381", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.05580v1", "title": "Power Cycling Test Bench for Accelerated Life Testing for Reliability Assessment of SiC-MOSFET in Extreme Offshore Environment", "publishedDate": "2020-01-15T22:21:05", "content": "The reliability of power semiconductor switches is important when considering their vital role in power electronic converters for downhole subsea applications. Respect to technology advancements in material sciences, power MOSFETs with wide band gap materials have been proposed such as silicon carbide (SiC) and gallium nitride (GaN) as an alternative to existing silicon (Si) based MOSFETs and IGBTs. However, reliability analysis should be performed before substituting SiC-MOSFETs in the place of existing Si-MOSFETs and IGBTs. Due to costly equipment of experimental test setup for accelerated life test, a good reliable and precise simulation-based test bench should be used to test the life test procedure before implementing actual hardware. Therefore, this paper introduces a power cycle (PC) test bench for accelerated life testing for reliability assessment of SiC-MOSFET in harsh offshore environment. The introduced test bench is a simulation-based of power switch in SimScape and LTspice and has been validated with datasheet of 1.2 kV SiC-MOSFET, CAS300M12BM2 by CREE. Preliminary hardware circuits are also shown for further experimental tests. The captured data from the Device-Under-Test (DUT) in different ambient temperatures are envisioned and provide critical information about the failure mechanisms and lifetime characteristics of power devices. The provided lifetime characteristics data of SiC-MOSFET can be used to statistically estimate the Remaining-Useful-Lifetime (RUL) of component in a real application such as downhole motor drives.", "doi": null, "authors": [ "Shiva Geraei", "Saeed Hasanpour Aghdam" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": "9 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2001.05580v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.05580v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331379", "title": "A Method for Treating Significant Conformational Changes in Alchemical Free Energy Simulations of Protein-Ligand Binding.", "content": "Relative binding free energy (RBFE) simulation is a rigorous approach to the calculation of quantitatively accurate binding free energy values for protein-ligand binding in which a reference binder is gradually converted to a target binder through alchemical transformation during the simulation. The success of such simulations relies on being able to accurately sample the correct conformational phase space for each alchemical state; however, this becomes a challenge when a significant conformation change occurs between the reference and target binder-receptor complexes. Increasing the simulation time and using enhanced sampling methods can be helpful, but effects can be limited, especially when the free energy barrier between conformations is high or when the correct target complex conformation is difficult to find and maintain. Current RBFE protocols seed the reference complex structure into every alchemical window of the simulation. In our study, we describe an improved protocol in which the reference structure is seeded into the first half of the alchemical windows, and the target structure is seeded into the second half of the alchemical windows. By applying information about the relevant correct end point conformations to different simulation windows from the beginning, the need for large barrier crossings or simulation prediction of the correct structures during an alchemical simulation is in many cases obviated. In the diverse cases we examine below, the simulations yielded free energy predictions that are satisfactory as compared to experiment and superior to running the simulations utilizing the conventional protocol. The method is straightforward to implement for publicly available FEP workflows.", "journal": "Journal of chemical theory and computation", "issn": [ "1549-9626" ], "authors": [ "Junzhuo Liao", "Alina P Sergeeva", "Edward D Harder", "Lingle Wang", "Jared M Sampson", "Barry Honig", "Richard A Friesner" ], "doi": "10.1021/acs.jctc.4c00954", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331379", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2107.10408v1", "title": "Temperature dependence of on-state inter-terminal capacitances (Cgd and Cgs) of SiC MOSFETs and frequency limitations of their measurements", "publishedDate": "2021-07-22T00:35:44", "content": "Inter-terminal capacitances (ITCs) have major influence on the dynamic performance of power SiC MOSFETs. Knowledge of the exact values for the ITCs is required in order to perform accurate and predictive compact model simulations of their dynamic performance. Since commercial SiC MOSFETs are capable of operating in a wide range of temperatures, it is important to know the values of ITCs in the whole temperature range of operation. Direct measurements of the ITCs with standard equipment is possible only at low current levels (i.e. in the off-state (Vgs < Vth) for Vds > 0 V), however their values in the on-state (Vgs>Vth) also influence the MOSFETs switching performance. In this work, ITCs of a planar SiC MOSFET in the on-state are studied by the means of a calibrated TCAD model, revealing substantial temperature dependence in the range of 300-450 K. In the first approximation, this temperature dependence of the ITCs can be explained by a weaker temperature dependence of the MOSFET channel resistance in comparison to its JFET and epitaxial layer resistances. In addition, it is shown that at high frequencies stray inductances of the TO-247-3 package result in a change of the extracted values of the on-state ITCs. This effect is already notable at 1 MHz.", "doi": null, "authors": [ "Alexander Tsibizov", "Roger Stark", "Ulrike Grossner" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "5 pages, 5 figures, accepted to VIRTUAL ISSUE ON SIC 2020 (The 13th\n European Conference on Silicon Carbide and Related Materials (ECSCRM\n 2020-2021))", "pdf_url": "http://arxiv.org/pdf/2107.10408v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2107.10408v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331345", "title": "Cortical microstructural alterations in different stages of Parkinson's disease.", "content": "To explore the cortical microstructural alterations in Parkinson's disease (PD) at different stages. 149 PD patients and 76 healthy controls were included. PD patients were divided into early stage PD (EPD) (Hoehn-Yahr stage ≤ 2) and moderate-to-late stage PD (MLPD) (Hoehn-Yahr stage ≥ 2.5) according to their Hoehn-Yahr stages. All participants underwent two-shell diffusion MRI and the images were fitted to Neurite Orientation Dispersion and Density Imaging (NODDI) model to obtain the neurite density index (NDI) and orientation dispersion index (ODI) to reflect the cortical microstructure. We used gray matter-based spatial statistics method to compare the voxel-wise cortical NODDI metrics between groups. Partial correlation was used to correlate the NODDI metrics and global composite outcome in PD patients. Compared with healthy controls, EPD patients showed lower ODI in widespread regions, covering bilateral frontal, temporal, parietal and occipital cortices, as well as regional lower NDI in bilateral cingulate and frontal lobes. Compared with healthy controls, MLPD patients showed lower ODI and NDI in more widespread regions. Compared with EPD patients, MLPD patients showed lower ODI in bilateral temporal, parietal and occipital cortices, where the ODI values were negatively correlated with global composite outcome in PD patients. PD patients showed widespread cortical microstructural degeneration, characterized by reduced neurite density and orientation dispersion, and the cortical neuritic microstructure exhibit progressive degeneration during the progression of PD.", "journal": "Brain imaging and behavior", "issn": [ "1931-7565" ], "authors": [ "Xueqin Bai", "Tao Guo", "Xiaojun Guan", "Cheng Zhou", "Jingjing Wu", "Haoting Wu", "Xiaocao Liu", "Chengqing Wu", "Jingwen Chen", "Jiaqi Wen", "Jianmei Qin", "Sijia Tan", "Xiaojie DuanMu", "Luyan Gu", "Ting Gao", "Peiyu Huang", "Baorong Zhang", "Xiaojun Xu", "Xiangwu Zheng", "Minming Zhang" ], "doi": "10.1007/s11682-024-00931-5", "publishedDate": "2024-09-12T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331345", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1711.02832v1", "title": "High-Speed Gate Driver Using GaN HEMTs for 20-MHz Hard Switching of SiC MOSFETs", "publishedDate": "2017-11-08T05:11:17", "content": "In this paper, we investigated a gate driver using a GaN HEMT push-pull configuration for the high-frequency hard switching of a SiC power MOSFET. Low on-resistance and low input capacitance of GaN HEMTs are suitable for a high-frequency gate driver from the logic level, and robustness of SiC MOSFET with high avalanche capability is suitable for a valve transistor in power converters. Our proposed gate driver consists of digital isolators, complementary Si MOSFETs, and GaN HEMTs. The GaN HEMT push-pull stage has a high driving capability owing to its superior switching characteristics, and complementary Si MOSFETs can enhance the control signal from the digital isolator. We investigated limiting factors of the switching frequency of the proposed gate driver by focusing on each circuit component and proposed an improved driving configuration for the gate driver. As a result, 20-MHz hard switching of a SiC MOSFET was achieved using the improved gate driver with GaN HEMTs.", "doi": null, "authors": [ "Takafumi Okuda", "Takashi Hikihara" ], "journal": null, "tags": [ "eess.SP" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1711.02832v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1711.02832v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/1i9f", "title": "STRUCTURAL CHARACTERIZATION OF THE COMPLEX OF THE REV RESPONSE ELEMENT RNA WITH A SELECTED PEPTIDE", "content": "Structural characterization of the complex of the Rev response element RNA with a selected peptide. - Zhang Q, Harada K, Cho HS, Frankel A, Wemmer DE Chem Biol (8) 511-20 (2001)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/1i9f_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/1i9f", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1, 2 ], "score": 3.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4evu", "title": "Crystal structure of C-terminal domain of putative periplasmic protein ydgH from S. enterica", "content": "Structural and functional characterization of DUF1471 domains of Salmonella proteins SrfN, YdgH/SssB, and YahO. - Michalska K, Cui H, Xu X, Brown RN, Cort JR, Heffron F, Nakayasu ES, Savchenko A, Adkins JN, Joachimiak A, Program for the Characterization of Secreted Effector Proteins (PCSEP), Midwest Center for Structural Genomics (MCSG) PLoS One (9) e101787 (2014)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4evu_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4evu", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/6jic", "title": "Identification and Characterization of a carboxypeptidase inhibitor from Lycium barbarum", "content": "Identification and characterization of a wolfberry carboxypeptidase inhibitor from Lycium barbarum. - Tan WL, Wong KH, Huang JY, Tay SV, Wang SJ Food Chem (351) 129338 (2021)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/6jic_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/6jic", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2knp", "title": "Isolation and characterization of peptides from Momordica cochinchinensis seeds.", "content": "Isolation and characterization of peptides from Momordica cochinchinensis seeds. - Daly NL, Chan L J Nat Prod (72) 1453-8 (2009)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2knp_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2knp", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/2k3c", "title": "Structural and Functional Characterization of TM IX of the NHE1 Isoform of the Na+/H+ Exchanger", "content": "Structural and functional characterization of transmembrane segment IX of the NHE1 isoform of the Na+/H+ exchanger. - Reddy T, Ding J, Li X, Sykes BD, Fliegel L, Rainey JK J Biol Chem (283) 22018-30 (2008)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/2k3c_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/2k3c", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.15174v1", "title": "A Guideline for Silicon Carbide MOSFET Thermal Characterization based on Source-Drain Voltage", "publishedDate": "2022-11-28T09:34:45", "content": "Thermal transient measurement based on source-drain voltage is a standard method to characterize thermal properties of silicon semiconductors but is doubtful to be directly applied to silicon carbide (SiC) devices. To evaluate its feasibility and limitations, this paper conducts a comprehensive investigation into its accuracy, resolution, and stability towards yielding the structure information of SiC MOSFET using the source-drain voltage as the temperature sensitive electrical parameter. The whole characterization process involves two main procedures and associated key testing parameters, such as gate voltages, sensing and heating currents, etc. Their impacts on both the static and dynamic performances are also investigated with the aim of providing a guideline for conducting a reproducible thermal transient measurement for SiC MOSFETs.", "doi": null, "authors": [ "Yi Zhang", "Yichi Zhang", "Zhiliang Xu", "Zhongxu Wang", "Hon Wong", "Zhebie Lu", "Antonio Caruso" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.15174v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.15174v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331411", "title": "Unraveling the adsorption-limited hydrogen oxidation reaction at palladium surface via in situ electron microscopy.", "content": "Palladium (Pd) catalysts have been extensively studied for the direct synthesis of H", "journal": "Proceedings of the National Academy of Sciences of the United States of America", "issn": [ "1091-6490" ], "authors": [ "Yukun Liu", "Kunmo Koo", "Zugang Mao", "Xianbiao Fu", "Xiaobing Hu", "Vinayak P Dravid" ], "doi": "10.1073/pnas.2408277121", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331411", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2311.07029v1", "title": "Accurate Time-segmented Loss Model for SiC MOSFETs in Electro-thermal Multi-Rate Simulation", "publishedDate": "2023-11-13T02:28:11", "content": "Compared with silicon (Si) power devices, Silicon carbide (SiC) devices have the advantages of fast switching speed and low on-resistance. However, the effects of non-ideal characteristics of SiC MOSFETs and stray parameters (especially parasitic inductance) on switching losses need to be further evaluated. In this paper, a transient loss model based on SiC MOSFET and SiC Schottky barrier diode (SBD) switching pairs is proposed. The transient process analysis is simplified by time segmentation of the transient process of power switching devices. The electro-thermal simulation calculates the junction temperature and updates the temperature-related parameters with the proposed loss model and the thermal network model. A multi-rate data exchange strategy is proposed to solve the problem of disparity in timescales between circuit simulation and thermal network simulation. The CREE CMF20120D SiC MOSFET device is used for the experimental verification. The experimental results verify the accuracy of the model which provides guidance for the circuit design of SiC MOSFETs. All the parameters of the loss model can be extracted from the datasheet, which is practical in power electronics design.", "doi": null, "authors": [ "Jialin Zheng", "Zhengming Zhao", "Han Xu", "Weicheng Liu", "Yangbin Zeng" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2311.07029v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2311.07029v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331343", "title": "Detection of Shiga toxin-producing Escherichia coli in dairy cows: genetic characterization and inhibition of adherence by catlle anti-STEC antibodies to HEp-2 cell.", "content": "Shiga toxin-producing Escherichia coli (STEC) is a zoonotic pathogen associated with severe disease. Cattle are recognized as the primary animal reservoir of STEC. This study reports the occurrence and characterization of STEC from dairy cows and evaluates the inhibition of adherence by catlle anti-STEC antibodies to the HEp-2 cell. From 151 samples, 30% (n = 45) were positive for stx by PCR screening (25.21% of dairy cows and 46.8% of growing calves). From these positive samples, 17 STEC isolates were characterized. In dairy cows, 3 out of 17 samples carried stx2, 3 out of 17 possessed stx1, and 2 out of 17 carried stx1/stx2. In growing cows, 8 out of 17 samples carried stx1 and 1 out of 17 carried stx1/stx2. Other virulence factors such as ehxA, saa, iha, cah, and eae were detected. The strains were typed into 3 E. coli O groups (O26, O91, and O130). The analysis of the HEp-2 adherence assays indicated that all serum from both cattle categories presented high levels of inhibition of adherence. Considering the severity of the symptoms caused by STEC in humans, searching for factors influencing the colonization of STEC in cattle would help identify strategies to avoid transmission and STEC infection.", "journal": "Veterinary research communications", "issn": [ "1573-7446" ], "authors": [ "Rocío Colello", "M Victoria Vélez", "Marcelo Rodríguez", "Ariel Rogé", "Analía I Etcheverría", "Nora Lía Padola" ], "doi": "10.1007/s11259-024-10557-z", "publishedDate": "2024-09-21T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331343", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2201.03821v1", "title": "Dipole Scattering at the Interface: The Origin of Low Mobility observed in SiC MOSFETs", "publishedDate": "2022-01-11T07:59:48", "content": "In this work, the origin of the low free electron mobility in SiC MOSFETs is investigated using the scattering theory of two-dimensional electron gases. We first establish that neither phonon scattering nor Coulomb scattering can be the cause of the low observed mobility in SiC MOSFETs; we establish this fact by comparing the theoretically calculated mobility considering these effects with experimental observations. By considering the threshold voltages and the effective field dependence of the mobility in SiC MOSFETs, it is concluded that the scattering centers of the dominant mechanism are electrically neutral and exhibit a short-range scattering potential. By considering charge distribution around a neutral defect at the interface, it is established that an electric dipole induced by the defect can act as a short-range scattering potential. We then calculate the mobility in SiC MOSFETs assuming that there exist a high density of dipoles at the interface. The calculated dipole-scattering-limited mobility shows a similar dependence on the effective field dependence to that observed in experimental results. Thus, we conclude that scattering induced by a high density of electric dipoles at the interface is dominant cause of the low mobility in SiC MOSFETs.", "doi": "10.1063/5.0086172", "authors": [ "Tetsuo Hatakeyama", "Hirohisa Hirai", "Mitsuru Simetani", "Dai Okamoto", "Mitsuo Okamoto", "Shinsuke Harada" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "16pages, 3 figures", "pdf_url": "http://arxiv.org/pdf/2201.03821v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2201.03821v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331330", "title": "Production, Characterization, Kinetics, and Thermodynamics Analysis of Amyloglucosidase from Fungal Consortium.", "content": "The current study aimed to produce an amyloglucosidase enzyme from the fungal consortium. The best amylolytic fungal consortia were identified as Alternaria alternata and Aspergillus niger through the 18S rDNA technique. Fermentation kinetics and various nutritional and cultural parameters were analyzed. Maximum production was obtained in M4 media, pH 5.5, 30 °C, and 4 mL inoculum at 150 rpm after 72 h of incubation. Along with that, sodium nitrate at 2.5%, maltose, beef extract 1%, zinc sulfate (0.1%), and Tween 80 (0.1%) supported the maximum amyloglucosidase production. Amyloglucosidase was partially purified up to 1.6 purification fold with a specific activity of 1.84 Umg", "journal": "Applied biochemistry and biotechnology", "issn": [ "1559-0291" ], "authors": [ "Imran Ali", "Roheena Abdullah", "Asifa Saleem", "Kinza Nisar", "Afshan Kaleem", "Mehwish Iqtedar", "Irfana Iqbal", "Xiaoming Chen" ], "doi": "10.1007/s12010-024-05067-2", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331330", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.05580v1", "title": "Power Cycling Test Bench for Accelerated Life Testing for Reliability Assessment of SiC-MOSFET in Extreme Offshore Environment", "publishedDate": "2020-01-15T22:21:05", "content": "The reliability of power semiconductor switches is important when considering their vital role in power electronic converters for downhole subsea applications. Respect to technology advancements in material sciences, power MOSFETs with wide band gap materials have been proposed such as silicon carbide (SiC) and gallium nitride (GaN) as an alternative to existing silicon (Si) based MOSFETs and IGBTs. However, reliability analysis should be performed before substituting SiC-MOSFETs in the place of existing Si-MOSFETs and IGBTs. Due to costly equipment of experimental test setup for accelerated life test, a good reliable and precise simulation-based test bench should be used to test the life test procedure before implementing actual hardware. Therefore, this paper introduces a power cycle (PC) test bench for accelerated life testing for reliability assessment of SiC-MOSFET in harsh offshore environment. The introduced test bench is a simulation-based of power switch in SimScape and LTspice and has been validated with datasheet of 1.2 kV SiC-MOSFET, CAS300M12BM2 by CREE. Preliminary hardware circuits are also shown for further experimental tests. The captured data from the Device-Under-Test (DUT) in different ambient temperatures are envisioned and provide critical information about the failure mechanisms and lifetime characteristics of power devices. The provided lifetime characteristics data of SiC-MOSFET can be used to statistically estimate the Remaining-Useful-Lifetime (RUL) of component in a real application such as downhole motor drives.", "doi": null, "authors": [ "Shiva Geraei", "Saeed Hasanpour Aghdam" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": "9 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2001.05580v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.05580v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331193", "title": "Exploring the heterogeneity of interstitial cells of Cajal and their properties in gastrointestinal mesenchymal tumors applying single-cell RNA sequencing analysis.", "content": "Gastrointestinal mesenchymal stromal tumors (GISTs) are a group of intramural tumors that exhibit a wide range of morphologies. Dysfunction or loss of interstitial cells of Cajal (ICCs) is correlated with the disorders of gastrointestinal motility. At present, the characterization and molecular mechanisms underlying the role of ICCs in GIST are still not clear.", "journal": "Discover oncology", "issn": [ "2730-6011" ], "authors": [ "Yongjun Zhu", "Rui Zhang", "Shipai Zhang", "Haijun Hu" ], "doi": "10.1007/s12672-024-01372-8", "publishedDate": "2024-09-19T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331193", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2404.13463v1", "title": "Time-Gated Optical Spectroscopy of Field-Effect Stimulated Recombination via Interfacial Point Defects in Fully-Processed Silicon Carbide Power MOSFETs", "publishedDate": "2024-04-20T20:42:53", "content": "Fully-processed SiC power metal-oxide-semiconductor field-effect transistors (MOSFETs) emit light during switching of the gate terminal, while both drain and source terminals are grounded. The emitted photons are caused by defect-assisted recombination of electrons and holes at the 4H-SiC/SiO$_2$ interface and can be detected through the SiC substrate. Here, we present time-gated spectroscopic characterization of these interfacial point defects. Unlike in previous studies, the devices were opened in such a way that the drain-contact remained electrically active. A separate examination of the photons emitted at the rising and falling transitions of the gate-source voltage enabled the extraction of two different spectral components. One of these components consists of a single transition with phonon replicas of a local vibrational mode (LVM) with an astonishingly high energy of 220 meV $\\unicode{x2013}$ well above the highest phonon modes in 4H-SiC and SiO$_2$ of 120 meV and 137 meV, respectively. Based on a quantum mechanical model, we successfully fitted its emission spectrum and assigned it to donor-acceptor pair recombination involving a carbon cluster-like defect. Other transitions were assigned to EH$_{6/7}$-assisted, EK$_2$-D, and nitrogen-aluminum donor-acceptor pair recombination. Due to the relevance of these defects in the operation of SiC MOSFETs, these novel insights will contribute to improved reliability and performance of these devices.", "doi": "10.1103/PhysRevApplied.22.024075", "authors": [ "Maximilian W. Feil", "Magdalena Weger", "Hans Reisinger", "Thomas Aichinger", "André Kabakow", "Dominic Waldhör", "Andreas C. Jakowetz", "Sven Prigann", "Gregor Pobegen", "Wolfgang Gustin", "Michael Waltl", "Michel Bockstedte", "Tibor Grasser" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "18 pages, 12 figures", "pdf_url": "http://arxiv.org/pdf/2404.13463v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2404.13463v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331189", "title": "Epidemiology, genetic characterization and population structure analysis of lumpy skin disease virus from North India.", "content": "Lumpy skin disease (LSD) is a transboundary, viral disease of cattle with a significant economic impact on the livestock industry. This study describes the epidemiological investigations of outbreaks of LSD that occurred in 2022 in three Indian states viz., Haryana, Himachal Pradesh and Rajasthan and the genetic characterization of Lumpy skin disease viruses (LSDVs). Also, the population structure analysis of LSDVs was carried out. Out of 138 scab samples tested from suspected cattle for LSDV, 106 were found positive. Of these, nine representative scab samples were further genetically characterized. Phylogenetic analysis based on the P32 and EEV gene sequences depicted that the LSDV strains of the present study had nucleotide identity of 100% and 99.10-99.45%, respectively with the LSDV/2019 field strains of India. Multiple sequence alignment of the EEV glycoprotein gene sequences revealed nucleotide polymorphisms at three positions viz., G178A, G253A and A459G in circulating LSDV/2022 field strains. Based on the median joining network analysis of the EEV gene, 12 haplotypes were identified among the LSDV populations. Population structure analysis corresponding to the EEV gene revealed high haplotype (0.8486 ± 0.026) and low nucleotide diversities (0.00636 ± 0.0006) and negative values for neutrality indices, indicating a high number of closely related haplotypes and the studied population may have undergone a recent expansion. The findings will help in understanding the distribution and dynamics of LSDV populations, which will prove pivotal in designing and implementing effective management and control strategies.", "journal": "Tropical animal health and production", "issn": [ "1573-7438" ], "authors": [ "Pallavi Moudgil", "Ramesh Kumar", "Punit Jhandai", "Sameer Kamboj", "Khushbu Bishnoi", "Kushal Grakh", "Renu Gupta", "Rajesh Khurana", "Naresh Jindal" ], "doi": "10.1007/s11250-024-04102-y", "publishedDate": "2024-09-11T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331189", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2107.10408v1", "title": "Temperature dependence of on-state inter-terminal capacitances (Cgd and Cgs) of SiC MOSFETs and frequency limitations of their measurements", "publishedDate": "2021-07-22T00:35:44", "content": "Inter-terminal capacitances (ITCs) have major influence on the dynamic performance of power SiC MOSFETs. Knowledge of the exact values for the ITCs is required in order to perform accurate and predictive compact model simulations of their dynamic performance. Since commercial SiC MOSFETs are capable of operating in a wide range of temperatures, it is important to know the values of ITCs in the whole temperature range of operation. Direct measurements of the ITCs with standard equipment is possible only at low current levels (i.e. in the off-state (Vgs < Vth) for Vds > 0 V), however their values in the on-state (Vgs>Vth) also influence the MOSFETs switching performance. In this work, ITCs of a planar SiC MOSFET in the on-state are studied by the means of a calibrated TCAD model, revealing substantial temperature dependence in the range of 300-450 K. In the first approximation, this temperature dependence of the ITCs can be explained by a weaker temperature dependence of the MOSFET channel resistance in comparison to its JFET and epitaxial layer resistances. In addition, it is shown that at high frequencies stray inductances of the TO-247-3 package result in a change of the extracted values of the on-state ITCs. This effect is already notable at 1 MHz.", "doi": null, "authors": [ "Alexander Tsibizov", "Roger Stark", "Ulrike Grossner" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "5 pages, 5 figures, accepted to VIRTUAL ISSUE ON SIC 2020 (The 13th\n European Conference on Silicon Carbide and Related Materials (ECSCRM\n 2020-2021))", "pdf_url": "http://arxiv.org/pdf/2107.10408v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2107.10408v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331177", "title": "Combining SiO", "content": "Cadmium (Cd) pollution in water and soil seriously threatens human health. Biochar and nanomaterials have high potential for solving the cadmium pollution problem due to their abundant pores and high specific surface area. Here, the preparation of the composite material SiO", "journal": "Environmental geochemistry and health", "issn": [ "1573-2983" ], "authors": [ "Shirui Peng", "Jing Liu", "Guofei Pan", "Yan Qin", "Zhixing Yang", "Xiaomu Yang", "Minghua Gu", "Zhiqiang Zhu", "Yanyan Wei" ], "doi": "10.1007/s10653-024-02243-5", "publishedDate": "2024-09-17T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331177", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1711.02832v1", "title": "High-Speed Gate Driver Using GaN HEMTs for 20-MHz Hard Switching of SiC MOSFETs", "publishedDate": "2017-11-08T05:11:17", "content": "In this paper, we investigated a gate driver using a GaN HEMT push-pull configuration for the high-frequency hard switching of a SiC power MOSFET. Low on-resistance and low input capacitance of GaN HEMTs are suitable for a high-frequency gate driver from the logic level, and robustness of SiC MOSFET with high avalanche capability is suitable for a valve transistor in power converters. Our proposed gate driver consists of digital isolators, complementary Si MOSFETs, and GaN HEMTs. The GaN HEMT push-pull stage has a high driving capability owing to its superior switching characteristics, and complementary Si MOSFETs can enhance the control signal from the digital isolator. We investigated limiting factors of the switching frequency of the proposed gate driver by focusing on each circuit component and proposed an improved driving configuration for the gate driver. As a result, 20-MHz hard switching of a SiC MOSFET was achieved using the improved gate driver with GaN HEMTs.", "doi": null, "authors": [ "Takafumi Okuda", "Takashi Hikihara" ], "journal": null, "tags": [ "eess.SP" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1711.02832v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1711.02832v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331138", "title": "The plant early recombinosome: a high security complex to break DNA during meiosis.", "content": "The formacion of numerous unpredictable DNA Double Strand Breaks (DSBs) on chromosomes iniciates meiotic recombination. In this perspective, we propose a 'multi-key lock' model to secure the risky but necesary breaks as well as a 'one per pair of cromatids' model for the topoisomerase-like early recombinosome. During meiosis, homologous chromosomes recombine at few sites of crossing-overs (COs) to ensure correct segregation. The initiation of meiotic recombination involves the formation of DNA double strand breaks (DSBs) during prophase I. Too many DSBs are dangerous for genome integrity: if these DSBs are not properly repaired, it could potentially lead to chromosomal fragmentation. Too few DSBs are also problematic: if the obligate CO cannot form between bivalents, catastrophic unequal segregation of univalents lead to the formation of sterile aneuploid spores. Research on the regulation of the formation of these necessary but risky DSBs has recently advanced in yeast, mammals and plants. DNA DSBs are created by the enzymatic activity of the early recombinosome, a topoisomerase-like complex containing SPO11. This opinion paper reviews recent insights on the regulation of the SPO11 cofactors necessary for the introduction of temporally and spatially controlled DSBs. We propose that a 'multi-key-lock' model for each subunit of the early recombinosome complex is required to secure the formation of DSBs. We also discuss the hypothetical implications that the established topoisomerase-like nature of the SPO11 core-complex can have in creating DSB in only one of the two replicated chromatids of early prophase I meiotic chromosomes. This hypothetical 'one per pair of chromatids' DSB formation model could optimize the faithful repair of the self-inflicted DSBs. Each DSB could use three potential intact homologous DNA sequences as repair template: one from the sister chromatid and the two others from the homologous chromosomes.", "journal": "Plant reproduction", "issn": [ "2194-7961" ], "authors": [ "Nahid Rafiei", "Arnaud Ronceret" ], "doi": "10.1007/s00497-024-00509-7", "publishedDate": "2024-08-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331138", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2009.04835v1", "title": "Understanding the role of threading dislocations on 4H-SiC MOSFET breakdown under high temperature reverse bias stress", "publishedDate": "2020-09-10T13:20:41", "content": "The origin of dielectric breakdown was studied on 4H-SiC MOSFETs that failed after three months of high temperature reverse bias (HTRB) stress. A local inspection of the failed devices demonstrated the presence of a threading dislocation (TD) at the breakdown location. The nanoscale origin of the dielectric breakdown was highlighted with advanced high-spatial-resolution scanning probe microscopy (SPM) techniques. In particular, SPM revealed the conductive nature of the TD and a local increase of the minority carrier concentration close to the defect. Numerical simulations estimated a hole concentration 13 orders of magnitude larger than in the ideal 4H-SiC crystal. The hole injection in specific regions of the device explained the failure of the gate oxide under stress. In this way, the key role of the TD in the dielectric breakdown of 4H-SiC MOSFET was unambiguously demonstrated.", "doi": "10.1088/1361-6528/ab5ff6", "authors": [ "P. Fiorenza", "M. Alessandrino", "B. Carbone", "C. Di Martino", "A. Russo", "M. Saggio", "C. Venuto", "E. Zanetti", "F. Giannazzo", "F. Roccaforte" ], "journal": "Nanotechnology 31, (2020) 125203", "tags": [ "physics.app-ph", "cond-mat.mtrl-sci" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2009.04835v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2009.04835v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331087", "title": "Effect of bioceramic inclusions on gel-cast aliphatic polymer membranes for bone tissue engineering applications: An in vitro study.", "content": "Polylactic acid (PLA) has been extensively used in tissue engineering. However, poor mechanical properties and low cell affinity have limited its pertinence in load bearing bone tissue regeneration (BTR) devices.", "journal": "Bio-medical materials and engineering", "issn": [ "1878-3619" ], "authors": [ "Vasudev Vivekanand Nayak", "Edmara T P Bergamo", "Vijayavenkataraman Sanjairaj", "Rakesh Kumar Behera", "Nikhil Gupta", "Paulo G Coelho", "Lukasz Witek" ], "doi": "10.3233/BME-240079", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331087", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2310.06184v2", "title": "A Brief Review of Single Event Burnout Failure Mechanisms and Design Tolerances of Silicon Carbide MOSFETs", "publishedDate": "2023-10-09T22:24:06", "content": "Radiation hardening of the MOSFET is of the highest priority for sustaining high-power systems in the space radiation environment. SiC-based power electronics are being looked at as a strong alternative for high power spaceborne power electronic systems. The SiC MOSFET has been shown to be most prone to SEB of the radiation effects. The knowledge of SiC MOSFET device degradation and failure mechanisms are reviewed. Additionally, the viability of rad-tolerant SiC MOSFET designs and the methods of SEB simulation are evaluated. A merit system is proposed to consider the performance of radiation tolerance and nominal electrical performance. Criteria needed for high-fidelity SEB simulation are also reviewed. This paper stands as a necessary analytical review to intercede the development of rad-hard power devices for space and extreme environment applications.", "doi": "10.3390/electronics13081414", "authors": [ "Christopher A. Grome", "Wei Ji" ], "journal": "Electronics 2024, 13, 1414", "tags": [ "physics.ins-det" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2310.06184v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2310.06184v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331082", "title": "Full-Incision Double-Eyelid Blepharoplasty with Selective Sensory Nerve Preservation.", "content": "Full-incision double-eyelid blepharoplasty can result in upper eyelid skin numbness postoperatively. However, few studies have examined sensory loss after eyelid surgery. We propose a novel surgical approach with selective sensory nerve preservation to prevent postoperative upper eyelid numbness.", "journal": "Aesthetic plastic surgery", "issn": [ "1432-5241" ], "authors": [ "Jing Liu", "Jinlong Huang", "Jia Liu", "Xiaodong Chen", "Gang Chen", "Jinming Wang" ], "doi": "10.1007/s00266-024-04371-w", "publishedDate": "2024-09-03T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331082", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2210.07417v2", "title": "Ultra-Wide Bandgap Ga$_2$O$_3$-on-SiC MOSFETs", "publishedDate": "2022-10-13T23:45:37", "content": "Ulta-wide bandgap semiconductors based on $\\beta$-Ga$_2$O$_3$ offer the potential to achieve higher power switching performance, efficiency, and lower manufacturing cost than today's wide bandgap power semiconductors. However, the most critical challenge to the commercialization of Ga$_2$O$_3$ electronics is overheating, which impacts the device's performance and reliability. We fabricated a Ga$_2$O$_3$/4H-SiC composite wafer using a fusion-bonding method. A low temperature ($\\le$ 600 $^{\\circ}$C) epitaxy and device processing approach based on low-temperature (LT) metalorganic vapor phase epitaxy is developed to grow a Ga$_2$O$_3$ epitaxial channel layer on the composite wafer and subsequently fabricate into Ga$_2$O$_3$ power MOSFETs. This LT approach is essential to preserve the structural integrity of the composite wafer. These LT-grown epitaxial Ga$_2$O$_3$ MOSFETs deliver high thermal performance (56% reduction in channel temperature), high voltage blocking capabilities up to 2.45 kV, and power figures of merit of $\\sim$ 300 MW/cm$^2$, which is a record high for any heterogeneously integrated Ga$_2$O$_3$ devices reported to date. This work is the first realization of multi-kilovolt homoepitaxial Ga$_2$O$_3$ power MOSFETs fabricated on a composite substrate with high heat transfer performance which delivers state-of-the-art power density values while running much cooler than those on native substrates. Thermal characterization and modeling results reveal that a Ga$_2$O$_3$/diamond composite wafer with a reduced Ga$_2$O$_3$ thickness ($\\sim$ 1 $\\mu$m) and thinner bonding interlayer ($<$ 10 nm) can reduce the device thermal impedance to a level lower than today's GaN-on-SiC power switches.", "doi": null, "authors": [ "Yiwen Song", "Arkka Bhattacharyya", "Anwarul Karim", "Daniel Shoemaker", "Hsien-Lien Huang", "Saurav Roy", "Craig McGray", "Jacob H. Leach", "Jinwoo Hwang", "Sriram Krishnamoorthy", "Sukwon Choi" ], "journal": null, "tags": [ "cond-mat.mtrl-sci", "physics.app-ph" ], "comments": "17 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2210.07417v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2210.07417v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4d0q", "title": "Hyaluronan Binding Module of the Streptococcal Pneumoniae Hyaluronate Lyase", "content": "Conformational analysis of the Streptococcus pneumoniae hyaluronate lyase and characterization of its hyaluronan-specific carbohydrate-binding module. - Suits MDL, Pluvinage B, Law A, Liu Y, Palma AS, Chai W, Feizi T, Boraston AB J Biol Chem (289) 27264-27277 (2014)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4d0q_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4d0q", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4am5", "title": "Bacterioferritin from Blastochloris viridis", "content": "Structural characterization of bacterioferritin from Blastochloris viridis. - Wahlgren WY, Omran H, von Stetten D, Royant A, van der Post S, Katona G PLoS One (7) e46992 (2012)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4am5_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4am5", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331462", "title": "Ablation of Supraventricular Arrhythmias With as Low as Reasonably Achievable X-Ray exposure (AALARA): Results of Prospective, Observational, Multicenter, Multinational, Open-Label Registry Study on Real World Data Using Routine Ensite 3D Mapping During SVT Ablation.", "content": "The reduction of fluoroscopic exposure during catheter ablation of supraventricular arrhythmias is widely adopted by experienced electrophysiology physicians with a relatively short learning curve and is becoming the standard of care in many parts of the world. While observational studies in the United States and some parts of Western Europe have evaluated the minimal fluoroscopic approach, there are scarce real-world data for this technique and the generalizability of outcomes in other economic regions.", "journal": "Pacing and clinical electrophysiology : PACE", "issn": [ "1540-8159" ], "authors": [ "Mohammad Amin", "Ayan Abdrakhmanov", "Evgeniy Kropotkin", "Vasil Traykov", "Zoltán Salló", "László Gellér", "Faizel Lorgat", "Oleg Sapelnikov", "Ondrej Toman", "Khalid Al-Muti", "Mohamed Aljaabari", "Adrian Bystriansky", "László Környei", "Nebojša Mujović", "Stefanie Simons", "Nándor Szegedi" ], "doi": "10.1111/pace.15075", "publishedDate": "2024-09-04T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331462", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.15174v1", "title": "A Guideline for Silicon Carbide MOSFET Thermal Characterization based on Source-Drain Voltage", "publishedDate": "2022-11-28T09:34:45", "content": "Thermal transient measurement based on source-drain voltage is a standard method to characterize thermal properties of silicon semiconductors but is doubtful to be directly applied to silicon carbide (SiC) devices. To evaluate its feasibility and limitations, this paper conducts a comprehensive investigation into its accuracy, resolution, and stability towards yielding the structure information of SiC MOSFET using the source-drain voltage as the temperature sensitive electrical parameter. The whole characterization process involves two main procedures and associated key testing parameters, such as gate voltages, sensing and heating currents, etc. Their impacts on both the static and dynamic performances are also investigated with the aim of providing a guideline for conducting a reproducible thermal transient measurement for SiC MOSFETs.", "doi": null, "authors": [ "Yi Zhang", "Yichi Zhang", "Zhiliang Xu", "Zhongxu Wang", "Hon Wong", "Zhebie Lu", "Antonio Caruso" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.15174v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.15174v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331444", "title": "Silicone sling surgery for congenital ptosis: Tarsal tunnel technique.", "content": "This was a prospective, interventional, comparative study conducted on patients with congenital simple severe ptosis. A novel method of silicone rod fixation to the tarsus (tarsal tunnel technique, group 1) was done compared with a conventional technique of silicone rod fixation (suture fixation technique, group 2) in frontalis suspension surgery. A total of 30 patients were randomized into two groups of 15 patients each. Postoperatively, MRD1, vertical palpebral aperture, and eyelid fold height were comparable in both groups till the last follow-up with stability in eyelid position. Patient satisfaction scores showed similar results with good-fair satisfaction grading in 13 patients in group 1 and 11 patients in group 2 at 6 months follow-up. No significant complications occurred in either group. Tarsal tunnel fixation of silicone rods is a novel method in sling surgery with optimal cosmetic and function outcomes. Further long-term studies are needed to validate the results of the technique.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Neelam Pushker", "Manish Mahabir", "Sahil Agrawal", "Mandeep Singh Bajaj" ], "doi": "10.4103/IJO.IJO_2766_23", "publishedDate": "2024-03-10T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331444", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2310.06184v2", "title": "A Brief Review of Single Event Burnout Failure Mechanisms and Design Tolerances of Silicon Carbide MOSFETs", "publishedDate": "2023-10-09T22:24:06", "content": "Radiation hardening of the MOSFET is of the highest priority for sustaining high-power systems in the space radiation environment. SiC-based power electronics are being looked at as a strong alternative for high power spaceborne power electronic systems. The SiC MOSFET has been shown to be most prone to SEB of the radiation effects. The knowledge of SiC MOSFET device degradation and failure mechanisms are reviewed. Additionally, the viability of rad-tolerant SiC MOSFET designs and the methods of SEB simulation are evaluated. A merit system is proposed to consider the performance of radiation tolerance and nominal electrical performance. Criteria needed for high-fidelity SEB simulation are also reviewed. This paper stands as a necessary analytical review to intercede the development of rad-hard power devices for space and extreme environment applications.", "doi": "10.3390/electronics13081414", "authors": [ "Christopher A. Grome", "Wei Ji" ], "journal": "Electronics 2024, 13, 1414", "tags": [ "physics.ins-det" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2310.06184v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2310.06184v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331443", "title": "Evaluation of antioxidant status of lens epithelial cells in cataract patients.", "content": "The main factor that causes cataracts is the increased oxidative stress and imbalance of an antioxidant defense mechanism, which leads to significant changes in the lens microarchitecture. Senile cataract is the most common type of acquired cataracts due to aging.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Kranti Santosh Sorte Gawali", "Avinash Namdeo Jadhao", "Trupti Diwan Ramteke", "Neelam Jayant Patil", "Harshal Sahare" ], "doi": "10.4103/IJO.IJO_19_24", "publishedDate": "2024-04-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331443", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1810.11452v1", "title": "Analysis and Development of SiC MOSFET Boost Converter as Solar PV Pre-regulator", "publishedDate": "2018-10-24T07:55:26", "content": "Renewable energy source such as photovoltaic (PV) cell generates power from the sun light by converting solar power to electrical power with no moving parts and less maintenance. A single photovoltaic cell produces voltage of low level. In order to boost up the voltage, a DC-DC boost converter is used. In order to use this DC-DC converter for high voltage and high frequency applications, Silicon Carbide (SiC) device is most preferred because of larger current carrying capability, higher voltage blocking capability, high operating temperature and less static and dynamic losses than the traditional silicon (Si) power switches. In the proposed work, the static and dynamic characteristics of SiC MOSFET for different temperatures are observed. A SiC MOSFET based boost converter is investigated which is powered by PV source. This DC - DC converter is controlled using a Pulse-Width Method (PWM) and the duty cycle d is calculated for tracking the maximum power point using incremental conductance algorithm of the PV systems implemented in FPGA. Simulation studies are carried out in MATLAB/SIMULINK.A prototype of the SiC converter is built and the results are verified experimentally. The performance parameters of the proposed converter such as output voltage ripple input current ripple and losses are computed and it is compared with the classical silicon (Si) MOSFET converter.", "doi": null, "authors": [ "A. Bharathi sankar", "R. Seyezhai" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mes-hall", "eess.SP", "physics.ins-det" ], "comments": "24 pages", "pdf_url": "http://arxiv.org/pdf/1810.11452v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1810.11452v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331437", "title": "Analysis of anthropometric measurements taken from the periocular region in healthy young individuals with different somatotypes.", "content": "Anthropometric parameters related with the periocular region (PR) have gained great importance with the optical technology used in the treatment of eye defects. They have also become important parameters that determine the limits of treatment in aesthetic surgery procedures in PR and the treatment of orbital diseases. The aim of this study was to examine the relationship of PR measurements with somatotype.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Sıdıka Karaketir", "Demet Şencan", "Serdar Çolakoğlu", "Deniz Şenol" ], "doi": "10.4103/IJO.IJO_2836_23", "publishedDate": "2024-02-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331437", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2210.07417v2", "title": "Ultra-Wide Bandgap Ga$_2$O$_3$-on-SiC MOSFETs", "publishedDate": "2022-10-13T23:45:37", "content": "Ulta-wide bandgap semiconductors based on $\\beta$-Ga$_2$O$_3$ offer the potential to achieve higher power switching performance, efficiency, and lower manufacturing cost than today's wide bandgap power semiconductors. However, the most critical challenge to the commercialization of Ga$_2$O$_3$ electronics is overheating, which impacts the device's performance and reliability. We fabricated a Ga$_2$O$_3$/4H-SiC composite wafer using a fusion-bonding method. A low temperature ($\\le$ 600 $^{\\circ}$C) epitaxy and device processing approach based on low-temperature (LT) metalorganic vapor phase epitaxy is developed to grow a Ga$_2$O$_3$ epitaxial channel layer on the composite wafer and subsequently fabricate into Ga$_2$O$_3$ power MOSFETs. This LT approach is essential to preserve the structural integrity of the composite wafer. These LT-grown epitaxial Ga$_2$O$_3$ MOSFETs deliver high thermal performance (56% reduction in channel temperature), high voltage blocking capabilities up to 2.45 kV, and power figures of merit of $\\sim$ 300 MW/cm$^2$, which is a record high for any heterogeneously integrated Ga$_2$O$_3$ devices reported to date. This work is the first realization of multi-kilovolt homoepitaxial Ga$_2$O$_3$ power MOSFETs fabricated on a composite substrate with high heat transfer performance which delivers state-of-the-art power density values while running much cooler than those on native substrates. Thermal characterization and modeling results reveal that a Ga$_2$O$_3$/diamond composite wafer with a reduced Ga$_2$O$_3$ thickness ($\\sim$ 1 $\\mu$m) and thinner bonding interlayer ($<$ 10 nm) can reduce the device thermal impedance to a level lower than today's GaN-on-SiC power switches.", "doi": null, "authors": [ "Yiwen Song", "Arkka Bhattacharyya", "Anwarul Karim", "Daniel Shoemaker", "Hsien-Lien Huang", "Saurav Roy", "Craig McGray", "Jacob H. Leach", "Jinwoo Hwang", "Sriram Krishnamoorthy", "Sukwon Choi" ], "journal": null, "tags": [ "cond-mat.mtrl-sci", "physics.app-ph" ], "comments": "17 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2210.07417v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2210.07417v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2311.07029v1", "title": "Accurate Time-segmented Loss Model for SiC MOSFETs in Electro-thermal Multi-Rate Simulation", "publishedDate": "2023-11-13T02:28:11", "content": "Compared with silicon (Si) power devices, Silicon carbide (SiC) devices have the advantages of fast switching speed and low on-resistance. However, the effects of non-ideal characteristics of SiC MOSFETs and stray parameters (especially parasitic inductance) on switching losses need to be further evaluated. In this paper, a transient loss model based on SiC MOSFET and SiC Schottky barrier diode (SBD) switching pairs is proposed. The transient process analysis is simplified by time segmentation of the transient process of power switching devices. The electro-thermal simulation calculates the junction temperature and updates the temperature-related parameters with the proposed loss model and the thermal network model. A multi-rate data exchange strategy is proposed to solve the problem of disparity in timescales between circuit simulation and thermal network simulation. The CREE CMF20120D SiC MOSFET device is used for the experimental verification. The experimental results verify the accuracy of the model which provides guidance for the circuit design of SiC MOSFETs. All the parameters of the loss model can be extracted from the datasheet, which is practical in power electronics design.", "doi": null, "authors": [ "Jialin Zheng", "Zhengming Zhao", "Han Xu", "Weicheng Liu", "Yangbin Zeng" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2311.07029v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2311.07029v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331418", "title": "Hydrophobic ZIF-8 nanoparticles loaded on chitosan for improved methanol adsorption from fermented wine.", "content": "Metal-organic frameworks (MOFs) have great potential for the adsorption of minor molecular alcohols in the vapor phase. However, the drawbacks of powdered MOFs, including low recyclability and problematic separation, limit their application in fermented wine. Chitosan (CS) is a low-cost, eco-friendly, moldable matrix used in the food industry. In this study, a novel CS@ZIF-8 adsorbent with excellent microporous surface area was successfully synthesized by incorporating hydrophobic ZIF-8 into CS. The results showed that CS@ZIF-8 beads had a high adsorption affinity for methanol at a Zn", "journal": "Journal of food science", "issn": [ "1750-3841" ], "authors": [ "Mibin Lin", "Jia Sha", "Zhonghao Zhu", "Penghui Ye", "Kai Zhao", "Kaijun Xiao" ], "doi": "10.1111/1750-3841.17397", "publishedDate": "2024-08-31T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331418", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2201.03821v1", "title": "Dipole Scattering at the Interface: The Origin of Low Mobility observed in SiC MOSFETs", "publishedDate": "2022-01-11T07:59:48", "content": "In this work, the origin of the low free electron mobility in SiC MOSFETs is investigated using the scattering theory of two-dimensional electron gases. We first establish that neither phonon scattering nor Coulomb scattering can be the cause of the low observed mobility in SiC MOSFETs; we establish this fact by comparing the theoretically calculated mobility considering these effects with experimental observations. By considering the threshold voltages and the effective field dependence of the mobility in SiC MOSFETs, it is concluded that the scattering centers of the dominant mechanism are electrically neutral and exhibit a short-range scattering potential. By considering charge distribution around a neutral defect at the interface, it is established that an electric dipole induced by the defect can act as a short-range scattering potential. We then calculate the mobility in SiC MOSFETs assuming that there exist a high density of dipoles at the interface. The calculated dipole-scattering-limited mobility shows a similar dependence on the effective field dependence to that observed in experimental results. Thus, we conclude that scattering induced by a high density of electric dipoles at the interface is dominant cause of the low mobility in SiC MOSFETs.", "doi": "10.1063/5.0086172", "authors": [ "Tetsuo Hatakeyama", "Hirohisa Hirai", "Mitsuru Simetani", "Dai Okamoto", "Mitsuo Okamoto", "Shinsuke Harada" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "16pages, 3 figures", "pdf_url": "http://arxiv.org/pdf/2201.03821v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2201.03821v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331411", "title": "Unraveling the adsorption-limited hydrogen oxidation reaction at palladium surface via in situ electron microscopy.", "content": "Palladium (Pd) catalysts have been extensively studied for the direct synthesis of H", "journal": "Proceedings of the National Academy of Sciences of the United States of America", "issn": [ "1091-6490" ], "authors": [ "Yukun Liu", "Kunmo Koo", "Zugang Mao", "Xianbiao Fu", "Xiaobing Hu", "Vinayak P Dravid" ], "doi": "10.1073/pnas.2408277121", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331411", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2212.13211v1", "title": "Adaptive Control of Surge Impedance for Electric Motors in Motor Drive Systems", "publishedDate": "2022-12-26T16:40:55", "content": "This article studies the possibility of controlling the surge impedance of the electric motor in motor drives. The existing solution to suppress (or eliminate) the reflected wave impact on the motor insulation run by a Si-IGBT or SiC-MOSFET-based drive is to use either a sinewave filter or dv/dt filter. The alternative solution suggested in this article is to implement a high-bandwidth electronic circuit at the end of the cable or at the motor terminals to match the surge impedance of the cable and motor. The high-frequency voltage ringing due to the reflected waves in motor drives is around 1 MHz, depending on the cable parameters and the length of the cable. In the proposed method, the electronic circuit can quickly detect the dv/dt rise and fall edges and adjust the electronic circuit equivalent impedance when pulses arrive the motor terminals. Thus, the cable and motor surge impedances can be matched over a short time to prevent reflected waves. As a result, the leakage currents passing through the ball bearing and overvoltage stress on the motor insulation can be suppressed significantly.", "doi": null, "authors": [ "Fahmid Sadeque", "Fariba Fateh", "JiangBiao He", "Behrooz Mirafzal" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2212.13211v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2212.13211v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331382", "title": "Modular Synthesis of Azidobicyclo[2.1.1]hexanes via (3 + 2) Annulation of α-Substituted Vinyl Azides and Bicyclo[1.1.0]butanes.", "content": "Here, we present a mild and rapid method to access azidobicyclo[2.1.1]hexanes via formal (3 + 2) cycloaddition of α-substituted vinyl azides and bicyclo[1.1.0]butanes under Lewis acid catalysis. A wide range of α-substituted vinyl azides were tolerated under mild conditions. Notably, the resulting cycloadducts could be transformed into structurally attractive 3-azabicyclo[3.1.1]heptenes through microwave-promoted rearrangement. The utilities were highlighted by copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition of tertiary alkyl azide and further transformation of the azide and ketone groups.", "journal": "The Journal of organic chemistry", "issn": [ "1520-6904" ], "authors": [ "Sai Hu", "Yuhong Gao", "Yuming Pan", "Dongshun Ni", "Li Deng" ], "doi": "10.1021/acs.joc.4c01920", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331382", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2407.13370v2", "title": "Complementary two dimensional carrier profiles of 4H-SiC MOSFETs by Scanning Spreading Resistance Microscopy and Scanning Capacitance Microscopy", "publishedDate": "2024-07-18T10:26:15", "content": "This paper reports the results presented in an invited poster during the International Conference on Silicon Carbide and Related Materials (ICSCRM) 2023 held in Sorrento, Italy. The suitability of scanning probe methods based on atomic force microscopy (AFM) measurements is explored to investigate with high spatial resolution the elementary cell of 4H-SiC power MOSFETs. The two-dimensional (2D) cross-sectional maps demonstrated a high spatial resolution of about 5 nm using the SSRM capabilities. Furthermore, the SCM capabilities enabled visualizing the fluctuations of charge carrier concentration across the different parts of the MOSFETs elementary cell.", "doi": null, "authors": [ "Patrick Fiorenza", "Marco Zignale", "Edoardo. Zanetti", "Mario S. Alessandrino", "Beatrice Carbone", "Alfio Guarnera", "Mario Saggio", "Filippo Giannazzo", "Fabrizio Roccaforte" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mtrl-sci" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2407.13370v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2407.13370v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331381", "title": "Liquid Atmospheric Pressure Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Using a Commercial Ion Source and Orbitrap Mass Analyzer.", "content": "A liquid atmospheric pressure-matrix-assisted laser desorption/ionization (LAP-MALDI) method has been developed and applied to a commercial AP-MALDI source on a hybrid orbitrap mass analyzer. It is shown that electrospray ionization (ESI)-like mass spectra of a range of peptides and proteins can be acquired by LAP-MALDI mass spectrometry (MS) as previously demonstrated on a homemade LAP-MALDI-Q-TOF setup but without the need of any modification to the commercially available MS equipment used. Multiply charged peptide ions were recorded with a resolution of around 100,000 and a mass accuracy of less than 5 ppm. The higher resolution and mass accuracy of the orbitrap analyzer compared with previously employed Q-TOF instrumentation provided high confidence in bacterial proteoform and species identification by top-down protein analysis.", "journal": "Analytical chemistry", "issn": [ "1520-6882" ], "authors": [ "Bob Challen", "Lily R Adair", "Rainer Cramer" ], "doi": "10.1021/acs.analchem.4c04458", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331381", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.05580v1", "title": "Power Cycling Test Bench for Accelerated Life Testing for Reliability Assessment of SiC-MOSFET in Extreme Offshore Environment", "publishedDate": "2020-01-15T22:21:05", "content": "The reliability of power semiconductor switches is important when considering their vital role in power electronic converters for downhole subsea applications. Respect to technology advancements in material sciences, power MOSFETs with wide band gap materials have been proposed such as silicon carbide (SiC) and gallium nitride (GaN) as an alternative to existing silicon (Si) based MOSFETs and IGBTs. However, reliability analysis should be performed before substituting SiC-MOSFETs in the place of existing Si-MOSFETs and IGBTs. Due to costly equipment of experimental test setup for accelerated life test, a good reliable and precise simulation-based test bench should be used to test the life test procedure before implementing actual hardware. Therefore, this paper introduces a power cycle (PC) test bench for accelerated life testing for reliability assessment of SiC-MOSFET in harsh offshore environment. The introduced test bench is a simulation-based of power switch in SimScape and LTspice and has been validated with datasheet of 1.2 kV SiC-MOSFET, CAS300M12BM2 by CREE. Preliminary hardware circuits are also shown for further experimental tests. The captured data from the Device-Under-Test (DUT) in different ambient temperatures are envisioned and provide critical information about the failure mechanisms and lifetime characteristics of power devices. The provided lifetime characteristics data of SiC-MOSFET can be used to statistically estimate the Remaining-Useful-Lifetime (RUL) of component in a real application such as downhole motor drives.", "doi": null, "authors": [ "Shiva Geraei", "Saeed Hasanpour Aghdam" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": "9 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2001.05580v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.05580v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331379", "title": "A Method for Treating Significant Conformational Changes in Alchemical Free Energy Simulations of Protein-Ligand Binding.", "content": "Relative binding free energy (RBFE) simulation is a rigorous approach to the calculation of quantitatively accurate binding free energy values for protein-ligand binding in which a reference binder is gradually converted to a target binder through alchemical transformation during the simulation. The success of such simulations relies on being able to accurately sample the correct conformational phase space for each alchemical state; however, this becomes a challenge when a significant conformation change occurs between the reference and target binder-receptor complexes. Increasing the simulation time and using enhanced sampling methods can be helpful, but effects can be limited, especially when the free energy barrier between conformations is high or when the correct target complex conformation is difficult to find and maintain. Current RBFE protocols seed the reference complex structure into every alchemical window of the simulation. In our study, we describe an improved protocol in which the reference structure is seeded into the first half of the alchemical windows, and the target structure is seeded into the second half of the alchemical windows. By applying information about the relevant correct end point conformations to different simulation windows from the beginning, the need for large barrier crossings or simulation prediction of the correct structures during an alchemical simulation is in many cases obviated. In the diverse cases we examine below, the simulations yielded free energy predictions that are satisfactory as compared to experiment and superior to running the simulations utilizing the conventional protocol. The method is straightforward to implement for publicly available FEP workflows.", "journal": "Journal of chemical theory and computation", "issn": [ "1549-9626" ], "authors": [ "Junzhuo Liao", "Alina P Sergeeva", "Edward D Harder", "Lingle Wang", "Jared M Sampson", "Barry Honig", "Richard A Friesner" ], "doi": "10.1021/acs.jctc.4c00954", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331379", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2404.13463v1", "title": "Time-Gated Optical Spectroscopy of Field-Effect Stimulated Recombination via Interfacial Point Defects in Fully-Processed Silicon Carbide Power MOSFETs", "publishedDate": "2024-04-20T20:42:53", "content": "Fully-processed SiC power metal-oxide-semiconductor field-effect transistors (MOSFETs) emit light during switching of the gate terminal, while both drain and source terminals are grounded. The emitted photons are caused by defect-assisted recombination of electrons and holes at the 4H-SiC/SiO$_2$ interface and can be detected through the SiC substrate. Here, we present time-gated spectroscopic characterization of these interfacial point defects. Unlike in previous studies, the devices were opened in such a way that the drain-contact remained electrically active. A separate examination of the photons emitted at the rising and falling transitions of the gate-source voltage enabled the extraction of two different spectral components. One of these components consists of a single transition with phonon replicas of a local vibrational mode (LVM) with an astonishingly high energy of 220 meV $\\unicode{x2013}$ well above the highest phonon modes in 4H-SiC and SiO$_2$ of 120 meV and 137 meV, respectively. Based on a quantum mechanical model, we successfully fitted its emission spectrum and assigned it to donor-acceptor pair recombination involving a carbon cluster-like defect. Other transitions were assigned to EH$_{6/7}$-assisted, EK$_2$-D, and nitrogen-aluminum donor-acceptor pair recombination. Due to the relevance of these defects in the operation of SiC MOSFETs, these novel insights will contribute to improved reliability and performance of these devices.", "doi": "10.1103/PhysRevApplied.22.024075", "authors": [ "Maximilian W. Feil", "Magdalena Weger", "Hans Reisinger", "Thomas Aichinger", "André Kabakow", "Dominic Waldhör", "Andreas C. Jakowetz", "Sven Prigann", "Gregor Pobegen", "Wolfgang Gustin", "Michael Waltl", "Michel Bockstedte", "Tibor Grasser" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "18 pages, 12 figures", "pdf_url": "http://arxiv.org/pdf/2404.13463v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2404.13463v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4d0q", "title": "Hyaluronan Binding Module of the Streptococcal Pneumoniae Hyaluronate Lyase", "content": "Conformational analysis of the Streptococcus pneumoniae hyaluronate lyase and characterization of its hyaluronan-specific carbohydrate-binding module. - Suits MDL, Pluvinage B, Law A, Liu Y, Palma AS, Chai W, Feizi T, Boraston AB J Biol Chem (289) 27264-27277 (2014)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4d0q_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4d0q", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4am5", "title": "Bacterioferritin from Blastochloris viridis", "content": "Structural characterization of bacterioferritin from Blastochloris viridis. - Wahlgren WY, Omran H, von Stetten D, Royant A, van der Post S, Katona G PLoS One (7) e46992 (2012)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4am5_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4am5", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331462", "title": "Ablation of Supraventricular Arrhythmias With as Low as Reasonably Achievable X-Ray exposure (AALARA): Results of Prospective, Observational, Multicenter, Multinational, Open-Label Registry Study on Real World Data Using Routine Ensite 3D Mapping During SVT Ablation.", "content": "The reduction of fluoroscopic exposure during catheter ablation of supraventricular arrhythmias is widely adopted by experienced electrophysiology physicians with a relatively short learning curve and is becoming the standard of care in many parts of the world. While observational studies in the United States and some parts of Western Europe have evaluated the minimal fluoroscopic approach, there are scarce real-world data for this technique and the generalizability of outcomes in other economic regions.", "journal": "Pacing and clinical electrophysiology : PACE", "issn": [ "1540-8159" ], "authors": [ "Mohammad Amin", "Ayan Abdrakhmanov", "Evgeniy Kropotkin", "Vasil Traykov", "Zoltán Salló", "László Gellér", "Faizel Lorgat", "Oleg Sapelnikov", "Ondrej Toman", "Khalid Al-Muti", "Mohamed Aljaabari", "Adrian Bystriansky", "László Környei", "Nebojša Mujović", "Stefanie Simons", "Nándor Szegedi" ], "doi": "10.1111/pace.15075", "publishedDate": "2024-09-04T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331462", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.15174v1", "title": "A Guideline for Silicon Carbide MOSFET Thermal Characterization based on Source-Drain Voltage", "publishedDate": "2022-11-28T09:34:45", "content": "Thermal transient measurement based on source-drain voltage is a standard method to characterize thermal properties of silicon semiconductors but is doubtful to be directly applied to silicon carbide (SiC) devices. To evaluate its feasibility and limitations, this paper conducts a comprehensive investigation into its accuracy, resolution, and stability towards yielding the structure information of SiC MOSFET using the source-drain voltage as the temperature sensitive electrical parameter. The whole characterization process involves two main procedures and associated key testing parameters, such as gate voltages, sensing and heating currents, etc. Their impacts on both the static and dynamic performances are also investigated with the aim of providing a guideline for conducting a reproducible thermal transient measurement for SiC MOSFETs.", "doi": null, "authors": [ "Yi Zhang", "Yichi Zhang", "Zhiliang Xu", "Zhongxu Wang", "Hon Wong", "Zhebie Lu", "Antonio Caruso" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.15174v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.15174v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331444", "title": "Silicone sling surgery for congenital ptosis: Tarsal tunnel technique.", "content": "This was a prospective, interventional, comparative study conducted on patients with congenital simple severe ptosis. A novel method of silicone rod fixation to the tarsus (tarsal tunnel technique, group 1) was done compared with a conventional technique of silicone rod fixation (suture fixation technique, group 2) in frontalis suspension surgery. A total of 30 patients were randomized into two groups of 15 patients each. Postoperatively, MRD1, vertical palpebral aperture, and eyelid fold height were comparable in both groups till the last follow-up with stability in eyelid position. Patient satisfaction scores showed similar results with good-fair satisfaction grading in 13 patients in group 1 and 11 patients in group 2 at 6 months follow-up. No significant complications occurred in either group. Tarsal tunnel fixation of silicone rods is a novel method in sling surgery with optimal cosmetic and function outcomes. Further long-term studies are needed to validate the results of the technique.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Neelam Pushker", "Manish Mahabir", "Sahil Agrawal", "Mandeep Singh Bajaj" ], "doi": "10.4103/IJO.IJO_2766_23", "publishedDate": "2024-03-10T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331444", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2310.06184v2", "title": "A Brief Review of Single Event Burnout Failure Mechanisms and Design Tolerances of Silicon Carbide MOSFETs", "publishedDate": "2023-10-09T22:24:06", "content": "Radiation hardening of the MOSFET is of the highest priority for sustaining high-power systems in the space radiation environment. SiC-based power electronics are being looked at as a strong alternative for high power spaceborne power electronic systems. The SiC MOSFET has been shown to be most prone to SEB of the radiation effects. The knowledge of SiC MOSFET device degradation and failure mechanisms are reviewed. Additionally, the viability of rad-tolerant SiC MOSFET designs and the methods of SEB simulation are evaluated. A merit system is proposed to consider the performance of radiation tolerance and nominal electrical performance. Criteria needed for high-fidelity SEB simulation are also reviewed. This paper stands as a necessary analytical review to intercede the development of rad-hard power devices for space and extreme environment applications.", "doi": "10.3390/electronics13081414", "authors": [ "Christopher A. Grome", "Wei Ji" ], "journal": "Electronics 2024, 13, 1414", "tags": [ "physics.ins-det" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2310.06184v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2310.06184v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331443", "title": "Evaluation of antioxidant status of lens epithelial cells in cataract patients.", "content": "The main factor that causes cataracts is the increased oxidative stress and imbalance of an antioxidant defense mechanism, which leads to significant changes in the lens microarchitecture. Senile cataract is the most common type of acquired cataracts due to aging.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Kranti Santosh Sorte Gawali", "Avinash Namdeo Jadhao", "Trupti Diwan Ramteke", "Neelam Jayant Patil", "Harshal Sahare" ], "doi": "10.4103/IJO.IJO_19_24", "publishedDate": "2024-04-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331443", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1810.11452v1", "title": "Analysis and Development of SiC MOSFET Boost Converter as Solar PV Pre-regulator", "publishedDate": "2018-10-24T07:55:26", "content": "Renewable energy source such as photovoltaic (PV) cell generates power from the sun light by converting solar power to electrical power with no moving parts and less maintenance. A single photovoltaic cell produces voltage of low level. In order to boost up the voltage, a DC-DC boost converter is used. In order to use this DC-DC converter for high voltage and high frequency applications, Silicon Carbide (SiC) device is most preferred because of larger current carrying capability, higher voltage blocking capability, high operating temperature and less static and dynamic losses than the traditional silicon (Si) power switches. In the proposed work, the static and dynamic characteristics of SiC MOSFET for different temperatures are observed. A SiC MOSFET based boost converter is investigated which is powered by PV source. This DC - DC converter is controlled using a Pulse-Width Method (PWM) and the duty cycle d is calculated for tracking the maximum power point using incremental conductance algorithm of the PV systems implemented in FPGA. Simulation studies are carried out in MATLAB/SIMULINK.A prototype of the SiC converter is built and the results are verified experimentally. The performance parameters of the proposed converter such as output voltage ripple input current ripple and losses are computed and it is compared with the classical silicon (Si) MOSFET converter.", "doi": null, "authors": [ "A. Bharathi sankar", "R. Seyezhai" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mes-hall", "eess.SP", "physics.ins-det" ], "comments": "24 pages", "pdf_url": "http://arxiv.org/pdf/1810.11452v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1810.11452v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331437", "title": "Analysis of anthropometric measurements taken from the periocular region in healthy young individuals with different somatotypes.", "content": "Anthropometric parameters related with the periocular region (PR) have gained great importance with the optical technology used in the treatment of eye defects. They have also become important parameters that determine the limits of treatment in aesthetic surgery procedures in PR and the treatment of orbital diseases. The aim of this study was to examine the relationship of PR measurements with somatotype.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Sıdıka Karaketir", "Demet Şencan", "Serdar Çolakoğlu", "Deniz Şenol" ], "doi": "10.4103/IJO.IJO_2836_23", "publishedDate": "2024-02-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331437", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2210.07417v2", "title": "Ultra-Wide Bandgap Ga$_2$O$_3$-on-SiC MOSFETs", "publishedDate": "2022-10-13T23:45:37", "content": "Ulta-wide bandgap semiconductors based on $\\beta$-Ga$_2$O$_3$ offer the potential to achieve higher power switching performance, efficiency, and lower manufacturing cost than today's wide bandgap power semiconductors. However, the most critical challenge to the commercialization of Ga$_2$O$_3$ electronics is overheating, which impacts the device's performance and reliability. We fabricated a Ga$_2$O$_3$/4H-SiC composite wafer using a fusion-bonding method. A low temperature ($\\le$ 600 $^{\\circ}$C) epitaxy and device processing approach based on low-temperature (LT) metalorganic vapor phase epitaxy is developed to grow a Ga$_2$O$_3$ epitaxial channel layer on the composite wafer and subsequently fabricate into Ga$_2$O$_3$ power MOSFETs. This LT approach is essential to preserve the structural integrity of the composite wafer. These LT-grown epitaxial Ga$_2$O$_3$ MOSFETs deliver high thermal performance (56% reduction in channel temperature), high voltage blocking capabilities up to 2.45 kV, and power figures of merit of $\\sim$ 300 MW/cm$^2$, which is a record high for any heterogeneously integrated Ga$_2$O$_3$ devices reported to date. This work is the first realization of multi-kilovolt homoepitaxial Ga$_2$O$_3$ power MOSFETs fabricated on a composite substrate with high heat transfer performance which delivers state-of-the-art power density values while running much cooler than those on native substrates. Thermal characterization and modeling results reveal that a Ga$_2$O$_3$/diamond composite wafer with a reduced Ga$_2$O$_3$ thickness ($\\sim$ 1 $\\mu$m) and thinner bonding interlayer ($<$ 10 nm) can reduce the device thermal impedance to a level lower than today's GaN-on-SiC power switches.", "doi": null, "authors": [ "Yiwen Song", "Arkka Bhattacharyya", "Anwarul Karim", "Daniel Shoemaker", "Hsien-Lien Huang", "Saurav Roy", "Craig McGray", "Jacob H. Leach", "Jinwoo Hwang", "Sriram Krishnamoorthy", "Sukwon Choi" ], "journal": null, "tags": [ "cond-mat.mtrl-sci", "physics.app-ph" ], "comments": "17 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2210.07417v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2210.07417v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2311.07029v1", "title": "Accurate Time-segmented Loss Model for SiC MOSFETs in Electro-thermal Multi-Rate Simulation", "publishedDate": "2023-11-13T02:28:11", "content": "Compared with silicon (Si) power devices, Silicon carbide (SiC) devices have the advantages of fast switching speed and low on-resistance. However, the effects of non-ideal characteristics of SiC MOSFETs and stray parameters (especially parasitic inductance) on switching losses need to be further evaluated. In this paper, a transient loss model based on SiC MOSFET and SiC Schottky barrier diode (SBD) switching pairs is proposed. The transient process analysis is simplified by time segmentation of the transient process of power switching devices. The electro-thermal simulation calculates the junction temperature and updates the temperature-related parameters with the proposed loss model and the thermal network model. A multi-rate data exchange strategy is proposed to solve the problem of disparity in timescales between circuit simulation and thermal network simulation. The CREE CMF20120D SiC MOSFET device is used for the experimental verification. The experimental results verify the accuracy of the model which provides guidance for the circuit design of SiC MOSFETs. All the parameters of the loss model can be extracted from the datasheet, which is practical in power electronics design.", "doi": null, "authors": [ "Jialin Zheng", "Zhengming Zhao", "Han Xu", "Weicheng Liu", "Yangbin Zeng" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2311.07029v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2311.07029v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331418", "title": "Hydrophobic ZIF-8 nanoparticles loaded on chitosan for improved methanol adsorption from fermented wine.", "content": "Metal-organic frameworks (MOFs) have great potential for the adsorption of minor molecular alcohols in the vapor phase. However, the drawbacks of powdered MOFs, including low recyclability and problematic separation, limit their application in fermented wine. Chitosan (CS) is a low-cost, eco-friendly, moldable matrix used in the food industry. In this study, a novel CS@ZIF-8 adsorbent with excellent microporous surface area was successfully synthesized by incorporating hydrophobic ZIF-8 into CS. The results showed that CS@ZIF-8 beads had a high adsorption affinity for methanol at a Zn", "journal": "Journal of food science", "issn": [ "1750-3841" ], "authors": [ "Mibin Lin", "Jia Sha", "Zhonghao Zhu", "Penghui Ye", "Kai Zhao", "Kaijun Xiao" ], "doi": "10.1111/1750-3841.17397", "publishedDate": "2024-08-31T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331418", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2201.03821v1", "title": "Dipole Scattering at the Interface: The Origin of Low Mobility observed in SiC MOSFETs", "publishedDate": "2022-01-11T07:59:48", "content": "In this work, the origin of the low free electron mobility in SiC MOSFETs is investigated using the scattering theory of two-dimensional electron gases. We first establish that neither phonon scattering nor Coulomb scattering can be the cause of the low observed mobility in SiC MOSFETs; we establish this fact by comparing the theoretically calculated mobility considering these effects with experimental observations. By considering the threshold voltages and the effective field dependence of the mobility in SiC MOSFETs, it is concluded that the scattering centers of the dominant mechanism are electrically neutral and exhibit a short-range scattering potential. By considering charge distribution around a neutral defect at the interface, it is established that an electric dipole induced by the defect can act as a short-range scattering potential. We then calculate the mobility in SiC MOSFETs assuming that there exist a high density of dipoles at the interface. The calculated dipole-scattering-limited mobility shows a similar dependence on the effective field dependence to that observed in experimental results. Thus, we conclude that scattering induced by a high density of electric dipoles at the interface is dominant cause of the low mobility in SiC MOSFETs.", "doi": "10.1063/5.0086172", "authors": [ "Tetsuo Hatakeyama", "Hirohisa Hirai", "Mitsuru Simetani", "Dai Okamoto", "Mitsuo Okamoto", "Shinsuke Harada" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "16pages, 3 figures", "pdf_url": "http://arxiv.org/pdf/2201.03821v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2201.03821v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331411", "title": "Unraveling the adsorption-limited hydrogen oxidation reaction at palladium surface via in situ electron microscopy.", "content": "Palladium (Pd) catalysts have been extensively studied for the direct synthesis of H", "journal": "Proceedings of the National Academy of Sciences of the United States of America", "issn": [ "1091-6490" ], "authors": [ "Yukun Liu", "Kunmo Koo", "Zugang Mao", "Xianbiao Fu", "Xiaobing Hu", "Vinayak P Dravid" ], "doi": "10.1073/pnas.2408277121", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331411", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2212.13211v1", "title": "Adaptive Control of Surge Impedance for Electric Motors in Motor Drive Systems", "publishedDate": "2022-12-26T16:40:55", "content": "This article studies the possibility of controlling the surge impedance of the electric motor in motor drives. The existing solution to suppress (or eliminate) the reflected wave impact on the motor insulation run by a Si-IGBT or SiC-MOSFET-based drive is to use either a sinewave filter or dv/dt filter. The alternative solution suggested in this article is to implement a high-bandwidth electronic circuit at the end of the cable or at the motor terminals to match the surge impedance of the cable and motor. The high-frequency voltage ringing due to the reflected waves in motor drives is around 1 MHz, depending on the cable parameters and the length of the cable. In the proposed method, the electronic circuit can quickly detect the dv/dt rise and fall edges and adjust the electronic circuit equivalent impedance when pulses arrive the motor terminals. Thus, the cable and motor surge impedances can be matched over a short time to prevent reflected waves. As a result, the leakage currents passing through the ball bearing and overvoltage stress on the motor insulation can be suppressed significantly.", "doi": null, "authors": [ "Fahmid Sadeque", "Fariba Fateh", "JiangBiao He", "Behrooz Mirafzal" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2212.13211v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2212.13211v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331382", "title": "Modular Synthesis of Azidobicyclo[2.1.1]hexanes via (3 + 2) Annulation of α-Substituted Vinyl Azides and Bicyclo[1.1.0]butanes.", "content": "Here, we present a mild and rapid method to access azidobicyclo[2.1.1]hexanes via formal (3 + 2) cycloaddition of α-substituted vinyl azides and bicyclo[1.1.0]butanes under Lewis acid catalysis. A wide range of α-substituted vinyl azides were tolerated under mild conditions. Notably, the resulting cycloadducts could be transformed into structurally attractive 3-azabicyclo[3.1.1]heptenes through microwave-promoted rearrangement. The utilities were highlighted by copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition of tertiary alkyl azide and further transformation of the azide and ketone groups.", "journal": "The Journal of organic chemistry", "issn": [ "1520-6904" ], "authors": [ "Sai Hu", "Yuhong Gao", "Yuming Pan", "Dongshun Ni", "Li Deng" ], "doi": "10.1021/acs.joc.4c01920", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331382", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2407.13370v2", "title": "Complementary two dimensional carrier profiles of 4H-SiC MOSFETs by Scanning Spreading Resistance Microscopy and Scanning Capacitance Microscopy", "publishedDate": "2024-07-18T10:26:15", "content": "This paper reports the results presented in an invited poster during the International Conference on Silicon Carbide and Related Materials (ICSCRM) 2023 held in Sorrento, Italy. The suitability of scanning probe methods based on atomic force microscopy (AFM) measurements is explored to investigate with high spatial resolution the elementary cell of 4H-SiC power MOSFETs. The two-dimensional (2D) cross-sectional maps demonstrated a high spatial resolution of about 5 nm using the SSRM capabilities. Furthermore, the SCM capabilities enabled visualizing the fluctuations of charge carrier concentration across the different parts of the MOSFETs elementary cell.", "doi": null, "authors": [ "Patrick Fiorenza", "Marco Zignale", "Edoardo. Zanetti", "Mario S. Alessandrino", "Beatrice Carbone", "Alfio Guarnera", "Mario Saggio", "Filippo Giannazzo", "Fabrizio Roccaforte" ], "journal": null, "tags": [ "physics.app-ph", "cond-mat.mtrl-sci" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2407.13370v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2407.13370v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331381", "title": "Liquid Atmospheric Pressure Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Using a Commercial Ion Source and Orbitrap Mass Analyzer.", "content": "A liquid atmospheric pressure-matrix-assisted laser desorption/ionization (LAP-MALDI) method has been developed and applied to a commercial AP-MALDI source on a hybrid orbitrap mass analyzer. It is shown that electrospray ionization (ESI)-like mass spectra of a range of peptides and proteins can be acquired by LAP-MALDI mass spectrometry (MS) as previously demonstrated on a homemade LAP-MALDI-Q-TOF setup but without the need of any modification to the commercially available MS equipment used. Multiply charged peptide ions were recorded with a resolution of around 100,000 and a mass accuracy of less than 5 ppm. The higher resolution and mass accuracy of the orbitrap analyzer compared with previously employed Q-TOF instrumentation provided high confidence in bacterial proteoform and species identification by top-down protein analysis.", "journal": "Analytical chemistry", "issn": [ "1520-6882" ], "authors": [ "Bob Challen", "Lily R Adair", "Rainer Cramer" ], "doi": "10.1021/acs.analchem.4c04458", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331381", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.05580v1", "title": "Power Cycling Test Bench for Accelerated Life Testing for Reliability Assessment of SiC-MOSFET in Extreme Offshore Environment", "publishedDate": "2020-01-15T22:21:05", "content": "The reliability of power semiconductor switches is important when considering their vital role in power electronic converters for downhole subsea applications. Respect to technology advancements in material sciences, power MOSFETs with wide band gap materials have been proposed such as silicon carbide (SiC) and gallium nitride (GaN) as an alternative to existing silicon (Si) based MOSFETs and IGBTs. However, reliability analysis should be performed before substituting SiC-MOSFETs in the place of existing Si-MOSFETs and IGBTs. Due to costly equipment of experimental test setup for accelerated life test, a good reliable and precise simulation-based test bench should be used to test the life test procedure before implementing actual hardware. Therefore, this paper introduces a power cycle (PC) test bench for accelerated life testing for reliability assessment of SiC-MOSFET in harsh offshore environment. The introduced test bench is a simulation-based of power switch in SimScape and LTspice and has been validated with datasheet of 1.2 kV SiC-MOSFET, CAS300M12BM2 by CREE. Preliminary hardware circuits are also shown for further experimental tests. The captured data from the Device-Under-Test (DUT) in different ambient temperatures are envisioned and provide critical information about the failure mechanisms and lifetime characteristics of power devices. The provided lifetime characteristics data of SiC-MOSFET can be used to statistically estimate the Remaining-Useful-Lifetime (RUL) of component in a real application such as downhole motor drives.", "doi": null, "authors": [ "Shiva Geraei", "Saeed Hasanpour Aghdam" ], "journal": null, "tags": [ "eess.SY", "cs.SY" ], "comments": "9 pages, 9 figures", "pdf_url": "http://arxiv.org/pdf/2001.05580v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.05580v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331379", "title": "A Method for Treating Significant Conformational Changes in Alchemical Free Energy Simulations of Protein-Ligand Binding.", "content": "Relative binding free energy (RBFE) simulation is a rigorous approach to the calculation of quantitatively accurate binding free energy values for protein-ligand binding in which a reference binder is gradually converted to a target binder through alchemical transformation during the simulation. The success of such simulations relies on being able to accurately sample the correct conformational phase space for each alchemical state; however, this becomes a challenge when a significant conformation change occurs between the reference and target binder-receptor complexes. Increasing the simulation time and using enhanced sampling methods can be helpful, but effects can be limited, especially when the free energy barrier between conformations is high or when the correct target complex conformation is difficult to find and maintain. Current RBFE protocols seed the reference complex structure into every alchemical window of the simulation. In our study, we describe an improved protocol in which the reference structure is seeded into the first half of the alchemical windows, and the target structure is seeded into the second half of the alchemical windows. By applying information about the relevant correct end point conformations to different simulation windows from the beginning, the need for large barrier crossings or simulation prediction of the correct structures during an alchemical simulation is in many cases obviated. In the diverse cases we examine below, the simulations yielded free energy predictions that are satisfactory as compared to experiment and superior to running the simulations utilizing the conventional protocol. The method is straightforward to implement for publicly available FEP workflows.", "journal": "Journal of chemical theory and computation", "issn": [ "1549-9626" ], "authors": [ "Junzhuo Liao", "Alina P Sergeeva", "Edward D Harder", "Lingle Wang", "Jared M Sampson", "Barry Honig", "Richard A Friesner" ], "doi": "10.1021/acs.jctc.4c00954", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331379", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2404.13463v1", "title": "Time-Gated Optical Spectroscopy of Field-Effect Stimulated Recombination via Interfacial Point Defects in Fully-Processed Silicon Carbide Power MOSFETs", "publishedDate": "2024-04-20T20:42:53", "content": "Fully-processed SiC power metal-oxide-semiconductor field-effect transistors (MOSFETs) emit light during switching of the gate terminal, while both drain and source terminals are grounded. The emitted photons are caused by defect-assisted recombination of electrons and holes at the 4H-SiC/SiO$_2$ interface and can be detected through the SiC substrate. Here, we present time-gated spectroscopic characterization of these interfacial point defects. Unlike in previous studies, the devices were opened in such a way that the drain-contact remained electrically active. A separate examination of the photons emitted at the rising and falling transitions of the gate-source voltage enabled the extraction of two different spectral components. One of these components consists of a single transition with phonon replicas of a local vibrational mode (LVM) with an astonishingly high energy of 220 meV $\\unicode{x2013}$ well above the highest phonon modes in 4H-SiC and SiO$_2$ of 120 meV and 137 meV, respectively. Based on a quantum mechanical model, we successfully fitted its emission spectrum and assigned it to donor-acceptor pair recombination involving a carbon cluster-like defect. Other transitions were assigned to EH$_{6/7}$-assisted, EK$_2$-D, and nitrogen-aluminum donor-acceptor pair recombination. Due to the relevance of these defects in the operation of SiC MOSFETs, these novel insights will contribute to improved reliability and performance of these devices.", "doi": "10.1103/PhysRevApplied.22.024075", "authors": [ "Maximilian W. Feil", "Magdalena Weger", "Hans Reisinger", "Thomas Aichinger", "André Kabakow", "Dominic Waldhör", "Andreas C. Jakowetz", "Sven Prigann", "Gregor Pobegen", "Wolfgang Gustin", "Michael Waltl", "Michel Bockstedte", "Tibor Grasser" ], "journal": null, "tags": [ "physics.app-ph" ], "comments": "18 pages, 12 figures", "pdf_url": "http://arxiv.org/pdf/2404.13463v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2404.13463v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4d0q", "title": "Hyaluronan Binding Module of the Streptococcal Pneumoniae Hyaluronate Lyase", "content": "Conformational analysis of the Streptococcus pneumoniae hyaluronate lyase and characterization of its hyaluronan-specific carbohydrate-binding module. - Suits MDL, Pluvinage B, Law A, Liu Y, Palma AS, Chai W, Feizi T, Boraston AB J Biol Chem (289) 27264-27277 (2014)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4d0q_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4d0q", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4am5", "title": "Bacterioferritin from Blastochloris viridis", "content": "Structural characterization of bacterioferritin from Blastochloris viridis. - Wahlgren WY, Omran H, von Stetten D, Royant A, van der Post S, Katona G PLoS One (7) e46992 (2012)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4am5_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4am5", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331462", "title": "Ablation of Supraventricular Arrhythmias With as Low as Reasonably Achievable X-Ray exposure (AALARA): Results of Prospective, Observational, Multicenter, Multinational, Open-Label Registry Study on Real World Data Using Routine Ensite 3D Mapping During SVT Ablation.", "content": "The reduction of fluoroscopic exposure during catheter ablation of supraventricular arrhythmias is widely adopted by experienced electrophysiology physicians with a relatively short learning curve and is becoming the standard of care in many parts of the world. While observational studies in the United States and some parts of Western Europe have evaluated the minimal fluoroscopic approach, there are scarce real-world data for this technique and the generalizability of outcomes in other economic regions.", "journal": "Pacing and clinical electrophysiology : PACE", "issn": [ "1540-8159" ], "authors": [ "Mohammad Amin", "Ayan Abdrakhmanov", "Evgeniy Kropotkin", "Vasil Traykov", "Zoltán Salló", "László Gellér", "Faizel Lorgat", "Oleg Sapelnikov", "Ondrej Toman", "Khalid Al-Muti", "Mohamed Aljaabari", "Adrian Bystriansky", "László Környei", "Nebojša Mujović", "Stefanie Simons", "Nándor Szegedi" ], "doi": "10.1111/pace.15075", "publishedDate": "2024-09-04T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331462", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2211.00799v1", "title": "Practical Phase Retrieval Using Double Deep Image Priors", "publishedDate": "2022-11-02T00:37:51", "content": "Phase retrieval (PR) concerns the recovery of complex phases from complex magnitudes. We identify the connection between the difficulty level and the number and variety of symmetries in PR problems. We focus on the most difficult far-field PR (FFPR), and propose a novel method using double deep image priors. In realistic evaluation, our method outperforms all competing methods by large margins. As a single-instance method, our method requires no training data and minimal hyperparameter tuning, and hence enjoys good practicality.", "doi": null, "authors": [ "Zhong Zhuang", "David Yang", "Felix Hofmann", "David Barmherzig", "Ju Sun" ], "journal": null, "tags": [ "cs.CV", "cs.LG", "eess.IV" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2211.00799v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2211.00799v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331444", "title": "Silicone sling surgery for congenital ptosis: Tarsal tunnel technique.", "content": "This was a prospective, interventional, comparative study conducted on patients with congenital simple severe ptosis. A novel method of silicone rod fixation to the tarsus (tarsal tunnel technique, group 1) was done compared with a conventional technique of silicone rod fixation (suture fixation technique, group 2) in frontalis suspension surgery. A total of 30 patients were randomized into two groups of 15 patients each. Postoperatively, MRD1, vertical palpebral aperture, and eyelid fold height were comparable in both groups till the last follow-up with stability in eyelid position. Patient satisfaction scores showed similar results with good-fair satisfaction grading in 13 patients in group 1 and 11 patients in group 2 at 6 months follow-up. No significant complications occurred in either group. Tarsal tunnel fixation of silicone rods is a novel method in sling surgery with optimal cosmetic and function outcomes. Further long-term studies are needed to validate the results of the technique.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Neelam Pushker", "Manish Mahabir", "Sahil Agrawal", "Mandeep Singh Bajaj" ], "doi": "10.4103/IJO.IJO_2766_23", "publishedDate": "2024-03-10T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331444", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2003.00220v1", "title": "Effective Localization Using Double Ideal Quotient and Its Implementation", "publishedDate": "2020-02-29T09:40:12", "content": "In this paper, we propose a new method for localization of polynomial ideal, which we call \"Local Primary Algorithm\". For an ideal $I$ and a prime ideal $P$, our method computes a $P$-primary component of $I$ after checking if $P$ is associated with $I$ by using \"double ideal quotient\" $(I:(I:P))$ and its variants which give us a lot of information about localization of $I$.", "doi": "10.1007/978-3-319-99639-4_19", "authors": [ "Yuki Ishihara", "Kazuhiro Yokoyama" ], "journal": "Proc. CASC 2018, LNCS 11077, pp.272-287, Springer 2018", "tags": [ "math.AC", "cs.SC" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/2003.00220v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2003.00220v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331443", "title": "Evaluation of antioxidant status of lens epithelial cells in cataract patients.", "content": "The main factor that causes cataracts is the increased oxidative stress and imbalance of an antioxidant defense mechanism, which leads to significant changes in the lens microarchitecture. Senile cataract is the most common type of acquired cataracts due to aging.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Kranti Santosh Sorte Gawali", "Avinash Namdeo Jadhao", "Trupti Diwan Ramteke", "Neelam Jayant Patil", "Harshal Sahare" ], "doi": "10.4103/IJO.IJO_19_24", "publishedDate": "2024-04-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331443", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1901.09753v1", "title": "On maximum of Gaussian process with unique maximum point of its variance", "publishedDate": "2019-01-28T15:54:44", "content": "Gaussian random processes which variances reach theirs maximum values at unique points are considered. Exact asymptotic behaviors of probabilities of large absolute maximums of theirs trajectories have been evaluated using Double Sum Method under the widest possible conditions.", "doi": null, "authors": [ "E. Hashorva", "S. Kobelkov", "V. I. Piterbarg" ], "journal": null, "tags": [ "math.PR" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1901.09753v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1901.09753v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331437", "title": "Analysis of anthropometric measurements taken from the periocular region in healthy young individuals with different somatotypes.", "content": "Anthropometric parameters related with the periocular region (PR) have gained great importance with the optical technology used in the treatment of eye defects. They have also become important parameters that determine the limits of treatment in aesthetic surgery procedures in PR and the treatment of orbital diseases. The aim of this study was to examine the relationship of PR measurements with somatotype.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Sıdıka Karaketir", "Demet Şencan", "Serdar Çolakoğlu", "Deniz Şenol" ], "doi": "10.4103/IJO.IJO_2836_23", "publishedDate": "2024-02-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331437", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2009.07217v1", "title": "Low Energy Light Yield of Fast Plastic Scintillators", "publishedDate": "2020-09-15T16:51:23", "content": "Compact neutron imagers using double-scatter kinematic reconstruction are being designed for localization and characterization of special nuclear material. These neutron imaging systems rely on scintillators with a rapid prompt temporal response as the detection medium. As n-p elastic scattering is the primary mechanism for light generation by fast neutron interactions in organic scintillators, proton light yield data are needed for accurate assessment of scintillator performance. The proton light yield of a series of commercial fast plastic organic scintillators---EJ-200, EJ-204, and EJ-208---was measured via a double time-of-flight technique at the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory. Using a tunable deuteron breakup neutron source, target scintillators housed in a dual photomultiplier tube configuration, and an array of pulse-shape-discriminating observation scintillators, the fast plastic scintillator light yield was measured over a broad and continuous energy range down to proton recoil energies of approximately 50 keV. This work provides key input to event reconstruction algorithms required for utilization of these materials in emerging neutron imaging modalities.", "doi": "10.1016/j.nima.2018.10.122", "authors": [ "T. A. Laplace", "B. L. Goldblum", "J. A. Brown", "D. L. Bleuel", "C. A. Brand", "G. Gabella", "T. Jordan", "C. Moore", "N. Munshi", "Z. W. Sweger", "A. Ureche", "E. Brubaker" ], "journal": "Nuclear Instruments and Methods in Physics Research Section A:\n Accelerators, Spectrometers, Detectors and Associated Equipment 954 (2020):\n 161444", "tags": [ "physics.ins-det" ], "comments": "15 pages, 6 figures", "pdf_url": "http://arxiv.org/pdf/2009.07217v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2009.07217v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1904.05563v1", "title": "On maximum of Gaussian random field having unique maximum point of its variance", "publishedDate": "2019-04-11T07:20:37", "content": "Gaussian random fields on Euclidean spaces whose variances reach their maximum values at unique points are considered. Exact asymptotic behaviors of probabilities of large absolute maximum of theirs trajectories have been evaluated using Double Sum Method under the widest possible conditions.", "doi": null, "authors": [ "Sergey G. Kobelkov", "Vladimir I. Piterbarg" ], "journal": null, "tags": [ "math.PR" ], "comments": "19 pages", "pdf_url": "http://arxiv.org/pdf/1904.05563v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1904.05563v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331418", "title": "Hydrophobic ZIF-8 nanoparticles loaded on chitosan for improved methanol adsorption from fermented wine.", "content": "Metal-organic frameworks (MOFs) have great potential for the adsorption of minor molecular alcohols in the vapor phase. However, the drawbacks of powdered MOFs, including low recyclability and problematic separation, limit their application in fermented wine. Chitosan (CS) is a low-cost, eco-friendly, moldable matrix used in the food industry. In this study, a novel CS@ZIF-8 adsorbent with excellent microporous surface area was successfully synthesized by incorporating hydrophobic ZIF-8 into CS. The results showed that CS@ZIF-8 beads had a high adsorption affinity for methanol at a Zn", "journal": "Journal of food science", "issn": [ "1750-3841" ], "authors": [ "Mibin Lin", "Jia Sha", "Zhonghao Zhu", "Penghui Ye", "Kai Zhao", "Kaijun Xiao" ], "doi": "10.1111/1750-3841.17397", "publishedDate": "2024-08-31T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331418", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1910.01465v2", "title": "Reducing Overestimation Bias in Multi-Agent Domains Using Double Centralized Critics", "publishedDate": "2019-10-03T13:40:46", "content": "Many real world tasks require multiple agents to work together. Multi-agent reinforcement learning (RL) methods have been proposed in recent years to solve these tasks, but current methods often fail to efficiently learn policies. We thus investigate the presence of a common weakness in single-agent RL, namely value function overestimation bias, in the multi-agent setting. Based on our findings, we propose an approach that reduces this bias by using double centralized critics. We evaluate it on six mixed cooperative-competitive tasks, showing a significant advantage over current methods. Finally, we investigate the application of multi-agent methods to high-dimensional robotic tasks and show that our approach can be used to learn decentralized policies in this domain.", "doi": null, "authors": [ "Johannes Ackermann", "Volker Gabler", "Takayuki Osa", "Masashi Sugiyama" ], "journal": null, "tags": [ "cs.LG", "cs.AI", "cs.MA", "stat.ML" ], "comments": "Accepted for the Deep RL Workshop at NeurIPS 2019; Changes for v2:\n Changed Figures 3,4, due to an error in the implementation of MATD3. Please\n refer to this version for fair evaluation", "pdf_url": "http://arxiv.org/pdf/1910.01465v2", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1910.01465v2", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331411", "title": "Unraveling the adsorption-limited hydrogen oxidation reaction at palladium surface via in situ electron microscopy.", "content": "Palladium (Pd) catalysts have been extensively studied for the direct synthesis of H", "journal": "Proceedings of the National Academy of Sciences of the United States of America", "issn": [ "1091-6490" ], "authors": [ "Yukun Liu", "Kunmo Koo", "Zugang Mao", "Xianbiao Fu", "Xiaobing Hu", "Vinayak P Dravid" ], "doi": "10.1073/pnas.2408277121", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331411", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2010.09465v1", "title": "A Nesterov's Accelerated quasi-Newton method for Global Routing using Deep Reinforcement Learning", "publishedDate": "2020-10-15T07:30:17", "content": "Deep Q-learning method is one of the most popularly used deep reinforcement learning algorithms which uses deep neural networks to approximate the estimation of the action-value function. Training of the deep Q-network (DQN) is usually restricted to first order gradient based methods. This paper attempts to accelerate the training of deep Q-networks by introducing a second order Nesterov's accelerated quasi-Newton method. We evaluate the performance of the proposed method on deep reinforcement learning using double DQNs for global routing. The results show that the proposed method can obtain better routing solutions compared to the DQNs trained with first order Adam and RMSprop methods.", "doi": null, "authors": [ "S. Indrapriyadarsini", "Shahrzad Mahboubi", "Hiroshi Ninomiya", "Takeshi Kamio", "Hideki Asai" ], "journal": null, "tags": [ "cs.LG" ], "comments": "Accepted in NOLTA 2020", "pdf_url": "http://arxiv.org/pdf/2010.09465v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2010.09465v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331382", "title": "Modular Synthesis of Azidobicyclo[2.1.1]hexanes via (3 + 2) Annulation of α-Substituted Vinyl Azides and Bicyclo[1.1.0]butanes.", "content": "Here, we present a mild and rapid method to access azidobicyclo[2.1.1]hexanes via formal (3 + 2) cycloaddition of α-substituted vinyl azides and bicyclo[1.1.0]butanes under Lewis acid catalysis. A wide range of α-substituted vinyl azides were tolerated under mild conditions. Notably, the resulting cycloadducts could be transformed into structurally attractive 3-azabicyclo[3.1.1]heptenes through microwave-promoted rearrangement. The utilities were highlighted by copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition of tertiary alkyl azide and further transformation of the azide and ketone groups.", "journal": "The Journal of organic chemistry", "issn": [ "1520-6904" ], "authors": [ "Sai Hu", "Yuhong Gao", "Yuming Pan", "Dongshun Ni", "Li Deng" ], "doi": "10.1021/acs.joc.4c01920", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331382", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2101.06452v1", "title": "Hyperfine measurement of $6\\text{P}_{1/2}$ state in $^{87}\\text{Rb}$ using double resonance on blue and IR transition", "publishedDate": "2021-01-16T14:58:15", "content": "In this paper, we present the spectroscopy of 6P$_{1/2}$ state in $^{87}$Rb using double resonance technique at $780~\\text{nm}$ and $421~\\text{nm}$. The double resonance technique is implemented using electromagnetically induced transparency (EIT) and optical pumping methods. Using these spectroscopy methods, we have measured the hyperfine splitting of 6P$_{1/2}$ state with precision of $<$400~kHz which agrees well with other spectroscopy methods such as electrical discharge and saturated absorption spectroscopy at $421~\\text{nm}$.", "doi": "10.1088/1361-6455/ab7670", "authors": [ "Elijah Ogaro Nyakang'o", "Dangka Shylla", "Vasant Natarajan", "Kanhaiya Pandey" ], "journal": "J. Phys. B: At. Mol. Opt. Phys. 53 (2020) 095001", "tags": [ "physics.atom-ph" ], "comments": "6 pages, 5 figures", "pdf_url": "http://arxiv.org/pdf/2101.06452v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2101.06452v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331381", "title": "Liquid Atmospheric Pressure Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Using a Commercial Ion Source and Orbitrap Mass Analyzer.", "content": "A liquid atmospheric pressure-matrix-assisted laser desorption/ionization (LAP-MALDI) method has been developed and applied to a commercial AP-MALDI source on a hybrid orbitrap mass analyzer. It is shown that electrospray ionization (ESI)-like mass spectra of a range of peptides and proteins can be acquired by LAP-MALDI mass spectrometry (MS) as previously demonstrated on a homemade LAP-MALDI-Q-TOF setup but without the need of any modification to the commercially available MS equipment used. Multiply charged peptide ions were recorded with a resolution of around 100,000 and a mass accuracy of less than 5 ppm. The higher resolution and mass accuracy of the orbitrap analyzer compared with previously employed Q-TOF instrumentation provided high confidence in bacterial proteoform and species identification by top-down protein analysis.", "journal": "Analytical chemistry", "issn": [ "1520-6882" ], "authors": [ "Bob Challen", "Lily R Adair", "Rainer Cramer" ], "doi": "10.1021/acs.analchem.4c04458", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331381", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/1711.03659v1", "title": "Frequency-comb based double-quantum two-dimensional coherent spectroscopy identifies collective hyperfine resonances in atomic vapor induced by dipole-dipole interactions", "publishedDate": "2017-11-10T01:06:56", "content": "Frequency comb based multidimensional coherent spectroscopy is a novel optical method that enables high resolution measurement in a short acquisition time. The method's resolution makes multidimensional coherent spectroscopy relevant for atomic systems that have narrow resonances. We use double-quantum multidimensional coherent spectroscopy to reveal collective hyperfine resonances in rubidium vapor at 100 C induced by dipole-dipole interactions. We observe tilted lineshapes in the double-quantum 2D spectra, which has never been reported for Doppler-broadened systems. The tilted lineshapes suggest that the signal is predominately from the interacting atoms that have near zero relative velocity.", "doi": "10.1103/PhysRevLett.120.233401", "authors": [ "Bachana Lomsadze", "Steven T. Cundiff" ], "journal": "Phys. Rev. Lett. 120, 233401 (2018)", "tags": [ "physics.atom-ph" ], "comments": null, "pdf_url": "http://arxiv.org/pdf/1711.03659v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/1711.03659v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331379", "title": "A Method for Treating Significant Conformational Changes in Alchemical Free Energy Simulations of Protein-Ligand Binding.", "content": "Relative binding free energy (RBFE) simulation is a rigorous approach to the calculation of quantitatively accurate binding free energy values for protein-ligand binding in which a reference binder is gradually converted to a target binder through alchemical transformation during the simulation. The success of such simulations relies on being able to accurately sample the correct conformational phase space for each alchemical state; however, this becomes a challenge when a significant conformation change occurs between the reference and target binder-receptor complexes. Increasing the simulation time and using enhanced sampling methods can be helpful, but effects can be limited, especially when the free energy barrier between conformations is high or when the correct target complex conformation is difficult to find and maintain. Current RBFE protocols seed the reference complex structure into every alchemical window of the simulation. In our study, we describe an improved protocol in which the reference structure is seeded into the first half of the alchemical windows, and the target structure is seeded into the second half of the alchemical windows. By applying information about the relevant correct end point conformations to different simulation windows from the beginning, the need for large barrier crossings or simulation prediction of the correct structures during an alchemical simulation is in many cases obviated. In the diverse cases we examine below, the simulations yielded free energy predictions that are satisfactory as compared to experiment and superior to running the simulations utilizing the conventional protocol. The method is straightforward to implement for publicly available FEP workflows.", "journal": "Journal of chemical theory and computation", "issn": [ "1549-9626" ], "authors": [ "Junzhuo Liao", "Alina P Sergeeva", "Edward D Harder", "Lingle Wang", "Jared M Sampson", "Barry Honig", "Richard A Friesner" ], "doi": "10.1021/acs.jctc.4c00954", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331379", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "template": "paper.html", "url": "http://arxiv.org/abs/2001.00762v1", "title": "Deep Unsupervised Common Representation Learning for LiDAR and Camera Data using Double Siamese Networks", "publishedDate": "2020-01-03T08:53:27", "content": "Domain gaps of sensor modalities pose a challenge for the design of autonomous robots. Taking a step towards closing this gap, we propose two unsupervised training frameworks for finding a common representation of LiDAR and camera data. The first method utilizes a double Siamese training structure to ensure consistency in the results. The second method uses a Canny edge image guiding the networks towards a desired representation. All networks are trained in an unsupervised manner, leaving room for scalability. The results are evaluated using common computer vision applications, and the limitations of the proposed approaches are outlined.", "doi": null, "authors": [ "Andreas Bühler", "Niclas Vödisch", "Mathias Bürki", "Lukas Schaupp" ], "journal": null, "tags": [ "cs.CV", "cs.RO" ], "comments": "8 pages, CoRL 2019 template used", "pdf_url": "http://arxiv.org/pdf/2001.00762v1", "engine": "arxiv", "parsed_url": [ "http", "arxiv.org", "/abs/2001.00762v1", "", "", "" ], "engines": [ "arxiv" ], "positions": [ 10 ], "score": 0.1, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4d0q", "title": "Hyaluronan Binding Module of the Streptococcal Pneumoniae Hyaluronate Lyase", "content": "Conformational analysis of the Streptococcus pneumoniae hyaluronate lyase and characterization of its hyaluronan-specific carbohydrate-binding module. - Suits MDL, Pluvinage B, Law A, Liu Y, Palma AS, Chai W, Feizi T, Boraston AB J Biol Chem (289) 27264-27277 (2014)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4d0q_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4d0q", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "url": "https://www.ebi.ac.uk/pdbe/entry/pdb/4am5", "title": "Bacterioferritin from Blastochloris viridis", "content": "Structural characterization of bacterioferritin from Blastochloris viridis. - Wahlgren WY, Omran H, von Stetten D, Royant A, van der Post S, Katona G PLoS One (7) e46992 (2012)", "thumbnail": "https://www.ebi.ac.uk/pdbe/static/entry/4am5_deposited_chain_front_image-200x200.png", "engine": "pdbe", "parsed_url": [ "https", "www.ebi.ac.uk", "/pdbe/entry/pdb/4am5", "", "", "" ], "template": "default.html", "engines": [ "pdbe" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331462", "title": "Ablation of Supraventricular Arrhythmias With as Low as Reasonably Achievable X-Ray exposure (AALARA): Results of Prospective, Observational, Multicenter, Multinational, Open-Label Registry Study on Real World Data Using Routine Ensite 3D Mapping During SVT Ablation.", "content": "The reduction of fluoroscopic exposure during catheter ablation of supraventricular arrhythmias is widely adopted by experienced electrophysiology physicians with a relatively short learning curve and is becoming the standard of care in many parts of the world. While observational studies in the United States and some parts of Western Europe have evaluated the minimal fluoroscopic approach, there are scarce real-world data for this technique and the generalizability of outcomes in other economic regions.", "journal": "Pacing and clinical electrophysiology : PACE", "issn": [ "1540-8159" ], "authors": [ "Mohammad Amin", "Ayan Abdrakhmanov", "Evgeniy Kropotkin", "Vasil Traykov", "Zoltán Salló", "László Gellér", "Faizel Lorgat", "Oleg Sapelnikov", "Ondrej Toman", "Khalid Al-Muti", "Mohamed Aljaabari", "Adrian Bystriansky", "László Környei", "Nebojša Mujović", "Stefanie Simons", "Nándor Szegedi" ], "doi": "10.1111/pace.15075", "publishedDate": "2024-09-04T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331462", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 1 ], "score": 1.0, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331444", "title": "Silicone sling surgery for congenital ptosis: Tarsal tunnel technique.", "content": "This was a prospective, interventional, comparative study conducted on patients with congenital simple severe ptosis. A novel method of silicone rod fixation to the tarsus (tarsal tunnel technique, group 1) was done compared with a conventional technique of silicone rod fixation (suture fixation technique, group 2) in frontalis suspension surgery. A total of 30 patients were randomized into two groups of 15 patients each. Postoperatively, MRD1, vertical palpebral aperture, and eyelid fold height were comparable in both groups till the last follow-up with stability in eyelid position. Patient satisfaction scores showed similar results with good-fair satisfaction grading in 13 patients in group 1 and 11 patients in group 2 at 6 months follow-up. No significant complications occurred in either group. Tarsal tunnel fixation of silicone rods is a novel method in sling surgery with optimal cosmetic and function outcomes. Further long-term studies are needed to validate the results of the technique.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Neelam Pushker", "Manish Mahabir", "Sahil Agrawal", "Mandeep Singh Bajaj" ], "doi": "10.4103/IJO.IJO_2766_23", "publishedDate": "2024-03-10T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331444", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 2 ], "score": 0.5, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331443", "title": "Evaluation of antioxidant status of lens epithelial cells in cataract patients.", "content": "The main factor that causes cataracts is the increased oxidative stress and imbalance of an antioxidant defense mechanism, which leads to significant changes in the lens microarchitecture. Senile cataract is the most common type of acquired cataracts due to aging.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Kranti Santosh Sorte Gawali", "Avinash Namdeo Jadhao", "Trupti Diwan Ramteke", "Neelam Jayant Patil", "Harshal Sahare" ], "doi": "10.4103/IJO.IJO_19_24", "publishedDate": "2024-04-26T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331443", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 3 ], "score": 0.3333333333333333, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331437", "title": "Analysis of anthropometric measurements taken from the periocular region in healthy young individuals with different somatotypes.", "content": "Anthropometric parameters related with the periocular region (PR) have gained great importance with the optical technology used in the treatment of eye defects. They have also become important parameters that determine the limits of treatment in aesthetic surgery procedures in PR and the treatment of orbital diseases. The aim of this study was to examine the relationship of PR measurements with somatotype.", "journal": "Indian journal of ophthalmology", "issn": [ "1998-3689" ], "authors": [ "Sıdıka Karaketir", "Demet Şencan", "Serdar Çolakoğlu", "Deniz Şenol" ], "doi": "10.4103/IJO.IJO_2836_23", "publishedDate": "2024-02-20T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331437", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 4 ], "score": 0.25, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331420", "title": "Estimating the Size of Populations at High Risk of Malaria in 2 Operational Districts in Cambodia: Household-Based Survey.", "content": "Cambodia is targeting the elimination of malaria by 2025. The last remaining pockets of malaria in Cambodia are concentrated among populations exposed to forested areas, but the size of these populations is not well understood. To plan for the procurement and distribution of vector-control tools, chemoprophylaxis, and other commodities for malaria prevention and surveillance, robust estimates of the population at greatest risk are required.", "journal": "JMIR public health and surveillance", "issn": [ "2369-2960" ], "authors": [ "Jerry O Jacobson", "Dyna Doum", "Neil F Lobo", "Siv Sovannaroth", "Allison Tatarsky", "David J McIver" ], "doi": "10.2196/58584", "publishedDate": "2024-06-25T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331420", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 5 ], "score": 0.2, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331418", "title": "Hydrophobic ZIF-8 nanoparticles loaded on chitosan for improved methanol adsorption from fermented wine.", "content": "Metal-organic frameworks (MOFs) have great potential for the adsorption of minor molecular alcohols in the vapor phase. However, the drawbacks of powdered MOFs, including low recyclability and problematic separation, limit their application in fermented wine. Chitosan (CS) is a low-cost, eco-friendly, moldable matrix used in the food industry. In this study, a novel CS@ZIF-8 adsorbent with excellent microporous surface area was successfully synthesized by incorporating hydrophobic ZIF-8 into CS. The results showed that CS@ZIF-8 beads had a high adsorption affinity for methanol at a Zn", "journal": "Journal of food science", "issn": [ "1750-3841" ], "authors": [ "Mibin Lin", "Jia Sha", "Zhonghao Zhu", "Penghui Ye", "Kai Zhao", "Kaijun Xiao" ], "doi": "10.1111/1750-3841.17397", "publishedDate": "2024-08-31T00:00:00", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331418", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 6 ], "score": 0.16666666666666666, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331411", "title": "Unraveling the adsorption-limited hydrogen oxidation reaction at palladium surface via in situ electron microscopy.", "content": "Palladium (Pd) catalysts have been extensively studied for the direct synthesis of H", "journal": "Proceedings of the National Academy of Sciences of the United States of America", "issn": [ "1091-6490" ], "authors": [ "Yukun Liu", "Kunmo Koo", "Zugang Mao", "Xianbiao Fu", "Xiaobing Hu", "Vinayak P Dravid" ], "doi": "10.1073/pnas.2408277121", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331411", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 7 ], "score": 0.14285714285714285, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331382", "title": "Modular Synthesis of Azidobicyclo[2.1.1]hexanes via (3 + 2) Annulation of α-Substituted Vinyl Azides and Bicyclo[1.1.0]butanes.", "content": "Here, we present a mild and rapid method to access azidobicyclo[2.1.1]hexanes via formal (3 + 2) cycloaddition of α-substituted vinyl azides and bicyclo[1.1.0]butanes under Lewis acid catalysis. A wide range of α-substituted vinyl azides were tolerated under mild conditions. Notably, the resulting cycloadducts could be transformed into structurally attractive 3-azabicyclo[3.1.1]heptenes through microwave-promoted rearrangement. The utilities were highlighted by copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition of tertiary alkyl azide and further transformation of the azide and ketone groups.", "journal": "The Journal of organic chemistry", "issn": [ "1520-6904" ], "authors": [ "Sai Hu", "Yuhong Gao", "Yuming Pan", "Dongshun Ni", "Li Deng" ], "doi": "10.1021/acs.joc.4c01920", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331382", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 8 ], "score": 0.125, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331381", "title": "Liquid Atmospheric Pressure Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Using a Commercial Ion Source and Orbitrap Mass Analyzer.", "content": "A liquid atmospheric pressure-matrix-assisted laser desorption/ionization (LAP-MALDI) method has been developed and applied to a commercial AP-MALDI source on a hybrid orbitrap mass analyzer. It is shown that electrospray ionization (ESI)-like mass spectra of a range of peptides and proteins can be acquired by LAP-MALDI mass spectrometry (MS) as previously demonstrated on a homemade LAP-MALDI-Q-TOF setup but without the need of any modification to the commercially available MS equipment used. Multiply charged peptide ions were recorded with a resolution of around 100,000 and a mass accuracy of less than 5 ppm. The higher resolution and mass accuracy of the orbitrap analyzer compared with previously employed Q-TOF instrumentation provided high confidence in bacterial proteoform and species identification by top-down protein analysis.", "journal": "Analytical chemistry", "issn": [ "1520-6882" ], "authors": [ "Bob Challen", "Lily R Adair", "Rainer Cramer" ], "doi": "10.1021/acs.analchem.4c04458", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331381", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 9 ], "score": 0.1111111111111111, "category": "science" }, { "template": "paper.html", "url": "https://www.ncbi.nlm.nih.gov/pubmed/39331379", "title": "A Method for Treating Significant Conformational Changes in Alchemical Free Energy Simulations of Protein-Ligand Binding.", "content": "Relative binding free energy (RBFE) simulation is a rigorous approach to the calculation of quantitatively accurate binding free energy values for protein-ligand binding in which a reference binder is gradually converted to a target binder through alchemical transformation during the simulation. The success of such simulations relies on being able to accurately sample the correct conformational phase space for each alchemical state; however, this becomes a challenge when a significant conformation change occurs between the reference and target binder-receptor complexes. Increasing the simulation time and using enhanced sampling methods can be helpful, but effects can be limited, especially when the free energy barrier between conformations is high or when the correct target complex conformation is difficult to find and maintain. Current RBFE protocols seed the reference complex structure into every alchemical window of the simulation. In our study, we describe an improved protocol in which the reference structure is seeded into the first half of the alchemical windows, and the target structure is seeded into the second half of the alchemical windows. By applying information about the relevant correct end point conformations to different simulation windows from the beginning, the need for large barrier crossings or simulation prediction of the correct structures during an alchemical simulation is in many cases obviated. In the diverse cases we examine below, the simulations yielded free energy predictions that are satisfactory as compared to experiment and superior to running the simulations utilizing the conventional protocol. The method is straightforward to implement for publicly available FEP workflows.", "journal": "Journal of chemical theory and computation", "issn": [ "1549-9626" ], "authors": [ "Junzhuo Liao", "Alina P Sergeeva", "Edward D Harder", "Lingle Wang", "Jared M Sampson", "Barry Honig", "Richard A Friesner" ], "doi": "10.1021/acs.jctc.4c00954", "engine": "pubmed", "parsed_url": [ "https", "www.ncbi.nlm.nih.gov", "/pubmed/39331379", "", "", "" ], "engines": [ "pubmed" ], "positions": [ 10 ], "score": 0.1, "category": "science" } ]