نتایج جستجو برای: voltage gradient

تعداد نتایج: 232620  

2004
Chien-Shao Tang Shih-Ching Lo Jam-Wem Lee Jyun-Hwei Tsai Yiming Li

Silicon on insulator (SOI) devices have been of great interest in these years. In this paper, simulation with density-gradient transport model is performed to examine the variation of threshold voltage (VTH) for double gate SOI MOSFETs. Different thickness of silicon (Si) film, oxide thickness, channel length and doping concentration are considered in this work. According to the numerical study...

Journal: :Cardiovascular research 2003
C Frank Starmer A O Grant T J Colatsky

OBJECTIVE The fate of an impulse arising from stimulation is determined by the ability of the wave front to recruit sufficient Na channels from adjacent cells. Previous numerical studies of mutant Na channels revealed both the velocity of a conditioning wave and the recruiting capacity of the front as determinants of the vulnerable period (VP), an interval within which excitation results in uni...

Journal: :Optics express 2012
Hongwen Ren Su Xu Shin-Tson Wu

A simple approach for preparing gradient polymer network liquid crystal (PNLC) with a large refractive index change is demonstrated. To control the effective refractive index at a given cell position, we applied a voltage to a homogeneous cell containing LC/diacrylate monomer mixture to generate the desired tilt angle and then stabilize the LC orientation with UV-induced polymer network. By var...

2012
M. F. ALHAJRI M. R. ALRASHIDI T. S. ALMONEEF

Recently integrating Embedded Generation units (EGs) in the distribution network gain popularity due to their overall positive impacts on the system they serve. Minimizing the system real power losses and improving the voltage profile of the system are just to name a few. However, suboptimal EG penetration and location might increase the system losses. This paper investigates the EG rating by f...

Journal: :Lab on a chip 2013
Karen Scida Eoin Sheridan Richard M Crooks

A method for controlling enrichment, separation, and delivery of analytes into different secondary microchannels using simple microfluidic architecture is described. The approach, which is based on bipolar electrochemistry, requires only easily fabricated electrodes and a low-voltage DC power supply: no pumps or valves are necessary. Upon application of a voltage between two driving electrodes,...

2005
Shih-Ching Lo Yiming Li

As the gate length of MOSFET devices shrinks down below 100 nm, the fluctuation of major devices parameter, namely, threshold voltage (VTH), subthreshold swing, drain current (ID) and subthreshold leakage current due to influences of processes variations becomes a serious problem. Random dopant fluctuation is one of the problems. In this work, we numerically examine the fluctuation effects of r...

Journal: :The Journal of General Physiology 1991
E Perozo D S Jong F Bezanilla

The effects of phosphorylation on the properties of the 20-pS channel of the squid giant axon were studied using the cut-open axon technique. Phosphorylation of the channel was achieved by photoreleasing caged ATP (inside the patch pipette) in the presence of the catalytic subunit of the protein kinase A. An inverted K+ gradient (500 K+ external parallel 5 K+ internal) was used to study the act...

2013
Karen Scida Eoin Sheridan Richard M. Crooks

A method for controlling enrichment, separation, and delivery of analytes into different secondary microchannels using simple microfluidic architecture is described. The approach, which is based on bipolar electrochemistry, requires only easily fabricated electrodes and a low-voltage DC power supply: no pumps or valves are necessary. Upon application of a voltage between two driving electrodes,...

Journal: :تحقیقات نوین در برق 0
عبدالرضا ربیعی abdorreza rabiee بهرام اصغریان دستنائی bahram asgharyan

abstract: one the most important problems in recent sensitive loads is the quality of voltage. for this challenge custom power devices are used in distribution systems. dynamic voltage restorer (dvr) is a custom power device that improves voltage, decrease power distortion, filter harmonics and balance distributed generations (dgs) with low voltage distribution system. in this paper, a new algo...

Journal: :Biomedical materials 2008
Yufeng Zheng Dong Liu Xiliang Liu Li Li

Ti-TiC-TiC/diamond-like carbon (DLC) gradient nano-composite films have been prepared on NiTi alloy substrates by the technique of plasma immersion ion implantation and deposition (PIIID) combined with plasma-enhanced chemical vapor deposition (PECVD). The influence of negative bias voltage applied to the substrate (from -100 V to -500 V) on the chemical structure, microstructure, mechanical pr...

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