Results 71 to 80 of about 50,703 (300)

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Implementation of a Parallel-Series Resonant Converter with Wide Input Voltage Range

Energies, 2019
A new resonant converter is presented to have the advantages of soft switching operation on power devices, without reverse recovery current loss on power diodes and wide input voltage range operation.
Bor-Ren Lin
doaj   +1 more source

A review on flicker-free ac-dc LED drivers for single-phase and three-phase ac power grids [PDF]

, 2019
Light-Emitting Diodes (LEDs) are coming strongly into the lighting market due to their advantages over conventional lighting solutions: energy efficient, controllable in both light and color, long lifetime, lack of a warm-up period and high power density.
Arias Pérez de Azpeitia, Manuel, Castro Álvarez, Ignacio, González Lamar, Diego, Hernando Álvarez, Marta María, Sebastián Zúñiga, Francisco Javier, Vázquez Ardura, Aitor   +5 more
core   +2 more sources

Decreased cold‐sensing function of the transient receptor potential channel TRPM8 from tailed amphibians

FEBS Open Bio, EarlyView.
Despite frogs avoiding low temperatures, examination of four salamander species revealed that none avoided cold and all possessed cold tolerance. Functional analysis of TRPM8, a cold sensor, showed that all salamander TRPM8s had lost their cold sensitivity.
Tadahiro Sawao, Daiki Kobayashi, Shogo Hori, Osamu Saitoh   +3 more
wiley   +1 more source

Fibrinogen Changes Before and After Intravenous Thrombolysis as Predictors of Cerebral Injury and Clinical Outcomes in Acute Ischemic Stroke: A Multicenter Prospective Cohort Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Plasma fibrinogen is essential in thrombosis and fibrinolysis, yet its dynamic changes pre‐ and post‐intravenous thrombolysis (IVT) for predicting brain injury severity and prognosis in acute ischemic stroke (AIS) patients remain unclear.
Wenhai Zhai, Yang Qu, Reziya Abuduxukuer, Kejia Zhang, Peng Zhang, Xin Tang, Huaimei Zhang, Lijuan Wang, Lichong Yang, Shuangxu Tan, Zhimei Yuan, Ce Han, Lili He, Yuping Zheng, Fenglan Zhao, Lijie Guo, Ligang Jiang, Jinfeng Li, Yongfei Jiang, Xuexia Zou, Dan Xu, Han Xu, Xiaojia Wang, Yingbin Qi, Xuefeng Hu, Yu Zhang, Zhen‐Ni Guo, Hang Jin, on behalf of the Biomarkers of Brain Injury Investigator Study Group   +28 more
wiley   +1 more source

Pseudo-Partial-Power Switch-Multiplexed Resonant Converter with Wide Voltage Gain

Energies
Full-bridge resonant converters have gained widespread adoption due to their excellent performance characteristics. However, these converters face limitations in terms of gain expansion.
Xiaoying Chen, Zehong Yao, Yizhan Zhuang, Yiming Zhang   +3 more
doaj   +1 more source

Fluid and Neuroimaging Biomarkers in Microgliopathy Colony‐Stimulating Factor‐1 Receptor‐Related Disorders

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective This study aims to identify both fluid and neuroimaging biomarkers for CSF1R‐RD that can inform the optimal timing of treatment administration to maximize therapeutic benefit, while also providing sensitive quantitative measurements to monitor disease progression.
Tomasz Chmiela, Madison Reeves, Karen Jansen‐West, Judith Dunmore, Yuping Song, Audrey Strongosky, Sunil Gandhi, Gilana Pikover, Matt Blurton‐Jones, Robert C. Spitale, Erik H. Middlebrooks, Leonard Petrucelli, Mercedes Prudencio, Zbigniew K. Wszolek   +13 more
wiley   +1 more source

High-Efficiency Resonant DC-DC Converter With Low Input Current Ripple for DC Power Distribution Systems

IEEE Access
A novel resonant dc-dc converter with high efficiency and low input current ripple is presented. Without adding any components, the proposed converter significantly improves the efficiency of the conventional half-bridge converter that has input current ...
Ki-Mok Kim
doaj   +1 more source

A Structure-Reconfigurable Soft-Switching DC-DC Converter for Wide-Range Applications

Energies, 2019
In this paper, a structure-reconfigurable resonant DC-DC (direct current − direct current) converter is presented. By controlling the state of the auxiliary switch, the converter could change the resonant structure to acquire a high efficiency and ...
Xianxu Huo, Ke Xu, Ruixin Liu, Xi Chen, Zhanchun Li, Haiyun Yan   +5 more
doaj   +1 more source

Constant-frequency clamped-mode resonant converters [PDF]

IEEE Transactions on Power Electronics, 1987
Two clamped-mode resonant converters are proposed which operate at a constant frequency while retaining the desired features of conventional series- and parallel-resonant converters. State-plane analyses are performed which identify all possible circuit-operating modes of a clamped-mode series-resonant converter and define their mode boundaries.
Fu-Sheng Tsai, Peter Materu, Fred C. Lee
openaire   +1 more source