[Construction and biological characterization of a Proteus mirabilis strain with modABC gene deletion]. [PDF]
Huang Y +4 more
europepmc +1 more source
在常规电容式电压互感器(CVT)的分压器低压端串接电容C3实现谐波数据准确测量已被证实是一种可行技术,探求其误差特性并提出优化控制措施,对其工程应用具有重要意义。文中针对此类新型CVT,开展了其结构和误差特性分析。首先明确了二次绕组与谐波测量部分间的相互影响,由此获知分压器电容量偏差和谐波测量端负荷为影响其谐波测量端误差特性的关键参量,在此基础之上提出了谐波测量端的误差控制方法,最后通过试验验证了新型CVT的性能满足电网谐波监测要求、所提误差改进措施有效。在衡水110 kV怀甫站进行的挂网运行情况表明 ...
王玲, 冯宇, 顾风彪, 杨柳
doaj
[Determination of trace genotoxic impurities in nifedipine by ultra high performance liquid chromatography-electrostatic field orbitrap high resolution mass spectrometry]. [PDF]
Guo C +6 more
europepmc +1 more source
[Neural network for auditory speech enhancement featuring feedback-driven attention and lateral inhibition]. [PDF]
Cai Y, Liu X, Liao X, Zhou Y.
europepmc +1 more source
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 +7 more
doaj
[Application of speech induced ABR in rehabilitation intervention for hearing impaired children]. [PDF]
Gao M, Dou X, Su M, Fan Y, Niu X.
europepmc +1 more source
[To address on the refined and individualized comprehensive evaluation of inner ear function]. [PDF]
Yang J, Jin Y, Chen J, Zhang Q, Duan M.
europepmc +1 more source
[Liquid-liquid interface synthesized covalent organic framework films for efficient extraction of okadaic acid from seawater]. [PDF]
Zhang WM, Fang M, Zhang L.
europepmc +1 more source
[A meta-analysis on the improvement of vocal function in unilateral vocal cord paralysis by reinnervation of the recurrent laryngeal nerve]. [PDF]
Zhou S +9 more
europepmc +1 more source
[Virtual reality-brain computer interface hand function enhancement rehabilitation system incorporating multi-sensory stimulation]. [PDF]
Shao X +6 more
europepmc +1 more source

