Results 31 to 40 of about 764,053 (268)

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

Establishing an Apheresis Medicine Program in a Resource‐Constrained Setting: A 5‐Year Experience From Lagos, Nigeria

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Establishing a comprehensive apheresis medicine program in a resource‐constrained setting presents significant structural, financial, and logistical challenges. Despite the growing clinical importance of apheresis services globally, published experience from sub‐Saharan Africa remains sparse.
Folasade Adelekan‐Popoola, Shakirat Gold‐Olufadi, Olufunto Olufela Kalejaiye, Abdullateef Ogala, Rasheed A. Balogun   +4 more
wiley   +1 more source

Application of symmetrical component method in protection system of bolter-miner

Gong-kuang zidonghua, 2017
In view of problems of low reliability and accuracy of fault diagnosis of asynchronous motor in bolter-miner, symmetrical component method was purposed to apply in protection system of bolter-miner to realize asymmetry over-current fault diagnosis. Three-
JIAO Xiaofeng
doaj   +1 more source

Serum Myonectin Levels Are Positively Associated With Physical Function and Lower Frailty‐Related Limitation in Maintenance Hemodialysis Patients: A Cross‐Sectional Study

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Maintenance hemodialysis (MHD) patients frequently suffer from frailty, characterized by reduced physical function and poor prognosis. Myokines, such as myonectin, secreted by muscle, are emerging regulators of systemic health. This study investigated the relationship between serum myonectin, adipokines (adiponectin, omentin), and ...
Kenichi Kono, Yoshifumi Moriyama, Koji Ohashi, Naoya Otaka, Minako Tatsumi, Toyoaki Murohara, Noriyuki Ouchi, Satoru Oshima   +7 more
wiley   +1 more source

Design of novel intrinsically safe power supply with 'ia' grade

Gong-kuang zidonghua, 2017
According to working condition of mine-used power supply in coal mine underground, novel intrinsically safe power supply with 'ia' grade was designed. The power supply uses a fully enclosed AC-DC module to eliminate special flameproof enclosure, and has ...
YU Zhixue, FANG Xupeng, ZHAO Yang
doaj   +1 more source

Over Current Protection for PFM Control DC-DC Converter

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2009
An over current protection method suitable for Fixed ON-time PFM (Pulse Frequency Modulation) Control DC-DC converters is proposed. It is based on inductor bottom current limiting, realized by monitoring the synchronous rectifier current and extending the OFF-phase of the main switch until it decreases to a predetermined limit, and can properly limit ...
YAMADA, Kouhei, SUGAHARA, Satoshi, FUJII, Nobuo   +2 more
openaire   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Optimization of grounding resistance in multitrain DC subway system based on MOEA/D‐DE

IET Intelligent Transport Systems, 2023
Currently, in multitrain DC subway system, abnormal increase of rail potential (RP) and stray current (SC) has seriously threatened the safe operation of the system.
Na Liu, Guifu Du, Fei He, Qiaoyue Li, Fengchuan Xu, Weiguo Huang, Xingxing Jiang, Zhongkui Zhu   +7 more
doaj   +1 more source

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

FEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes, Guilherme M. Azevedo, Amanda P. Barcellos, Diana Bahia   +3 more
wiley   +1 more source

Optimal Coordination of Directional Overcurrent Relays in Microgrids Considering European and North American Curves

Energies
Protecting AC microgrids (MGs) is a challenging task due to their dual operating modes—grid-connected and islanded—which cause sudden variations in fault currents. Traditional protection methods may no longer ensure network security.
León F. Serna-Montoya, Sergio D. Saldarriaga-Zuluaga, Jesús M. López-Lezama, Nicolás Muñoz-Galeano   +3 more
doaj   +1 more source