Results 61 to 70 of about 4,399 (112)

[How I treat vasovagal syncope in children]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Zou RM, Wang C.
europepmc   +1 more source

多谐波工况下高压并联电容器热稳定温度影响因素研究

Gaoya dianqi
谐波将引起高压并联电容器损耗增大，导致设备发热严重，影响高压并联电容器安全稳定运行。现有研究对电容器热稳定温度随谐波组合的影响规律研究较少，且不能准确获得内部温度。通过对变电站内电容器运行数据进行测量分析，获得电容器的实际运行工况中奇次谐波含量高。基于此，为并联电容器施加多种奇次谐波，以模拟实际运行工况，采用恒电流法对高压并联电容器开展热稳定试验，在被试电容器外部和内部分别安装温度传感器，测量不同工况下电容器的外壳温度和心子温度。试验结果显示，在单频次电流激励下，热稳定温度随频率先降低后增加 ...
孙启明, 祝令瑜, 盖斌
doaj   +2 more sources

[Performance evaluation of different filtration fractions during daytime continuous renal replacement therapy]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Wang L, Chen Y, Xu G, Xu C.
europepmc   +1 more source

[Comprehensive analytical chemistry experiment： analysis of non-covalent interactions between double-stranded deoxyribonucleic acid and a natural drug by electrospray ionization mass spectrometry]. [PDF]

Se Pu
Ma L, Wang YH, Yuan YL, Wang SS.
europepmc   +1 more source

[Researches and clinical translation of smart dressings]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Lyu GZ, Zhao P.
europepmc   +1 more source

均压电容对双断口真空断路器预击穿特性的影响研究

Gaoya dianqi
双断口真空断路器能够有效提高耐受电压水平，显著降低重燃率，进而提升无功投切性能，具有重要的工程实际意义。文中通过实验分别研究了双断口真空断路器在直流电压下不并联均压电容以及并联均压电容条件下关合时的预击穿特性，包括预击穿开距及其分散性、预击穿电压、预击穿场强，并计算其威布尔分布。结果表明，通过并联合理大小的均压电容（约100 pF）可以使双断口分压更加均匀，从而有效改善双断口真空断路器的预击穿特性。实验结果表明，随着均压电容的增大，当均压电容值超过500 pF后，双断口真空断路器的预击穿特性将会变差 ...
李洪伟, 徐学帅, 熊晓川, 黄博, 马留二   +4 more
doaj  

[Refined surgical protocol and clinical efficacy of total expansion auricular reconstruction surgery]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Hao DY, Song BQ, Dong LW, Cang ZZ.
europepmc   +1 more source

[Determination of eight per- and polyfluoroalkyl substances in seawater using dispersive membrane extraction-ultra-high performance liquid chromatography-tandem mass spectrometry]. [PDF]

Se Pu
Ren Z, Ma JP, Liu YJ, Zhang L, Wu GG, Li S.   +5 more
europepmc   +1 more source

[Development and electrophysiological validation of a temporal interference transcranial magnetic stimulation system for mice]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Cui C, Wang T, Zhang Y, Zheng W, Xu G.
europepmc   +1 more source

[Rapid determination of 12 photoinitiator residues in medicinal composite membranes by ultra performance convergence chromatography-tandem mass spectrometry]. [PDF]

Se Pu
Cao YJ, Liu CX, Chen LL, Shang Y, Chen XL, Hu B, Fu M, Hu M.   +7 more
europepmc   +1 more source