Results 71 to 80 of about 2,361 (309)

High-speed digital-to-analogue convertor using passive switched-capacitor algorithmic conversion

Electronics Letters, 1988
A purely passive parasitic-compensated switched-capacitor circuit is shown to implement a simple signal conversion algorithm consisting of a mere charge division between equal valued capacitors. Such a circuit is the core of the new digital-to-analogue convertor described in this letter, and which is particularly suitable for high-frequency ...
V.F. Dias, J.E. Franca, J.C. Vital
openaire   +1 more source

Use of Symptomatic Drug Treatment for Fatigue in Multiple Sclerosis and Patterns of Work Loss

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To describe the use of central stimulants and amantadine for fatigue in MS and evaluate a potential association with reduced work loss in people with MS. Methods We conducted a nationwide, matched, register‐based cohort study in Sweden (2006 to 2023) using national registers with prospective data collection.
Simon Englund, Johan Reutfors, Thomas Frisell, Fredrik Piehl   +3 more
wiley   +1 more source

DAB unified ZVS control strategy with optimal current stress in full power range under TPS control

IET Power Electronics
Current stress and soft switching range are important performance indexes of dual active bridge DC–DC converter. Based on three‐phase shift control, Karush–Kuhn–Tucker (KKT) algorithm is used to solve the optimal control strategy of current stress under ...
Shuai Cheng, Fusheng Wang, Zongfeng Han, Chuanqi Zhang   +3 more
doaj   +1 more source

Pulse frequency modulation and unilateral dual-phase-shift hybrid control strategy for bidirectional full-bridge LLC resonant converter

The Journal of Engineering, 2019
Bidirectional LLC resonant converter has been popular in applications such as electric vehicle, energy storage system and uninterruptible power supply for its good soft-switching characteristics.
Fengyi Zhang, Yubin Wang, Fan Wang, Changpeng Teng   +3 more
doaj   +1 more source

Effects of VSM convertor control on penetration limits of non-synchronous generation in the GB power system [PDF]

, 2016
2013 saw the presentation of a paper [1][2] to the wind integration workshop, which demonstrated 26 high convertor penetration scenarios, 17 of which introduced a type of instability in RMS models previously unseen by the researchers. It also provided an
Booth, Campbell D., Dysko, Adam, Ierna, Richard, Roscoe, Andrew J., Urdal, Helge, Yu, Mengran, Zhu, Jiebei   +6 more
core  

Adult‐Onset Subacute Sclerosing Panencephalitis Presenting With Subacute Cognitive Deficits

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT We describe the case of a 41‐year‐old man diagnosed with adult‐onset subacute sclerosing panencephalitis (SSPE). The patient presented with subacute progressive cognitive deficits and a neuropsychological profile indicating predominant frontoparietal dysfunction. MRI showed only mild parietal‐predominant cerebral atrophy.
Dennis Yeow, Nicola McKern, Vincent Oxenham, Kate Ahmad, Omar Ahmad   +4 more
wiley   +1 more source

Small power ZVS circuits for the marine-controlled source electromagnetic transmitter

The Journal of Engineering, 2019
Marine-controlled source electromagnetic transmitter is an important equipment for the investigation of marine geology and exploration of oil, gas, and mineral resources in recent years.
Hongxi Song, Yiming Zhang, Junxia Gao, Yu Zhang   +3 more
doaj   +1 more source

A Depolarizing Leak in Sodium Bicarbonate Cotransporter NBCe1 Causes Brain Edema

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives SLC4A4 encodes electrogenic sodium bicarbonate cotransporter NBCe1, prominently expressed in kidney and brain. Recessive loss‐of‐function variants in SLC4A4 cause proximal renal tubular acidosis, no brain edema. In the brain, NBCe1 is expressed by astrocytes, where it regulates pH and mediates astrocyte volume changes.
Quinty Bisseling, Mark D. Parker, Sven Kerst, Richard A. Pasternack, Jacob Tondreau, Marjolein Breur, Gemma M. van Rooijen‐van Leeuwen, Davide Tonduti, Ettore Salsano, Alejandra Darling, Joanna A. E. van Wijk, Susanna Törnroth‐Horsefield, Marianna Bugiani, Petra J. W. Pouwels, Quinten Waisfisz, Marjo S. van der Knaap, Rogier Min   +16 more
wiley   +1 more source

Triple buck converter – an efficient low-distortion switch-mode power amplifier topology

The Journal of Engineering, 2019
A switch-mode power amplifier topology that can achieve both a high conversion efficiency and low-output signal distortion is introduced. Such systems are desirable for ultra-high precision amplifiers that, for example, drive actuators in nanometre ...
Mario Mauerer, Johann Walter Kolar, Johann Walter Kolar   +2 more
doaj   +1 more source

Progress in High Power Free-Piston Stirling Convertor Development [PDF]

, 2008
The U.S. Space Exploration Policy has established a vision for human exploration of the moon and Mars. One option for power for future outposts on the lunar and Martian surfaces is a nuclear reactor coupled with a free-piston Stirling convertor at a ...
Brandhorst, Henry W., Jr., Chapman, Peter A., Kirby, Raymond L., Walter, Thomas J.   +3 more
core   +1 more source