Results 91 to 100 of about 493 (140)

[Research on inversion method of intravascular blood flow velocity based on convolutional neural network]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2022
Wang Y, Yang D, Xu B, Zhang X, Wang X.
europepmc   +1 more source

基于PSCAD的特高压自耦变直流偏磁及无功损耗特性分析

Gaoya dianqi, 2019
由于特高压自耦变易受直流偏磁电流的影响,随着中国1 000 kV特高压电网逐步投入运行,研究1 000 kV特高压自耦变直流偏磁影响下的无功损耗特性具有重要意义。文中针对我国自主研发的1 000 kV特高压自耦变,首先依据自耦变直流偏磁下励磁电流与磁链的非线性曲线,建立偏磁电流与无功损耗间的数学模型;然后利用厂家所提供的1 000 kV特高压U-I曲线与铭牌参数,在PSCAD平台中建立仿真模型,进行特高压自耦变直流偏磁仿真研究,仿真结果表明,特高压自耦变单相无功损耗与单相直流偏磁电流近似呈线性关系 ...
杨培宏, 冯士伟, 亢岚, 李亚
doaj  

[Phase amplitude coupling analysis of local field potentials in working memory of rats affected by transcranial magneto-acoustic-electrical stimulation]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2022
Dang J, Zhang S, You S, Du W, Xu G.
europepmc   +1 more source

雷击下谐振阻尼型CVT谐振过电压仿真分析

Dianci bileiqi
电容式电压互感器（CVT）作为重要的一次在线监测设备，在超特高压电力系统中得到了广泛的应用。通过CVT的监测过电压波形，可为系统的故障定位和排查提供重要依据。然而，由于CVT的设计原则主要面向工频电压测量，在测量宽频带的雷电过电压时，内部动态元件及非线性元件导致测量波形的畸变，给故障分析带来了巨大的挑战。本文以某500 kV交流线路发生的非常规过电压录波为典型案例，根据实际参数开展了雷击形式推断分析，研究了在雷电过电压下CVT本身录波产生的畸变以及其自身产生的铁磁谐振过程 ...
郭桐玮, 梁涛, 王正玺, 吴晓晖, 曾宏, 崔涛, 郭洁, 谢彦召   +7 more
doaj  

[Progresses on temporal interference electromagnetic stimulation for non-invasive deep brain function modulation]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Zhou T, Yu P, Xu Y.
europepmc   +1 more source

[Detection method of nonlinear magnetized harmonic signal of medical magnetic nanoparticles]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2021
Liu Y, Ke L, Du Q, Zu W, Jiang C, Zhang Y.   +5 more
europepmc   +1 more source

[Magnetic induced phase shift detection system based on a novel sensor for cerebral hemorrhage]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Liu J, Yan L, Qin M, Zhang H, Chen M.
europepmc   +1 more source

[Research on portable airway impedance monitoring device based on expiratory oscillation]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Kuang Y, Che B, Li X, Liu L, Deng L.
europepmc   +1 more source

[Imaging Diagnosis of Ischemic Stroke Through Multiparametric Magnetic Resonance Angiography Enhanced by NaGdF₄ Nanoparticles]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Wu J, Ma Y, Yue S, Zhang X, Li W, Zhang N.   +5 more
europepmc   +1 more source

The design of digital delay line and low voltage-monitoring system for Kicker power supply

踢轨磁铁（Kicker）电源系统是兰州重离子加速器冷却储存环（HIRFL-CSR）注入引出系统中实现快引出的一个关键元件，主要功能是为踢轨磁铁提供快脉冲励磁电流以产生所需要的快脉冲磁场。踢轨磁铁（Kicker）电源系统各触发脉冲是否同步关系到束流能否顺利注入引出以及有好的束流品质。基于此，本文介绍了基于CPLD-EPM1270T144的数字延迟线系统，以满足HIRFL-CSR踢轨磁铁（Kicker）电源对触发脉冲进行适当延迟的要求；分析介绍了数字延迟线系统结构、工作原理、PCB制版及系统调试 ...
刘云涛
core