提出了保护矿井中的变压器和配电电器的雷电避雷器系统。环形配电网路通常在接总负荷的中心处附近断开。地下(电缆)网路接到架空线的情况和装在矿井中的变压器的间隙接入增大了电网受雷电过电压损坏的概率,绘出了雷电避雷器结构的示意图 ...
doaj
[Prospects and technical challenges of non-invasive brain-computer interfaces in manned space missions]. [PDF]
Ju Y +8 more
europepmc +1 more source
[Progresses on temporal interference electromagnetic stimulation for non-invasive deep brain function modulation]. [PDF]
Zhou T, Yu P, Xu Y.
europepmc +1 more source
[Safety study of resin-based dental materials using gas chromatography-mass spectrometry techniques]. [PDF]
Li Y, Zeng Y, Du Z, Ren G.
europepmc +1 more source
高压直流电缆绝缘与附件绝缘构成了双层复合绝缘结构,绝缘材料界面的匹配特性是直流输电系统安全稳定运行的重要基础。文中研究了交联聚乙烯(XLPE)和三元乙丙橡胶(EPDM)的电导率性能和材料显微结构对绝缘界面匹配特性的影响,然后研究了复合界面的空间电荷分布特性和电场分布特性,以及材料改性对绝缘匹配特性的影响。实验结果表明,XLPE和EPDM电导率特征参数(材料系数A,电场依赖系数B,活化能φ)的差异是绝缘匹配特性不理想的重要因素,复合XLPE/EPDM界面电场畸变率最高可达209.49 ...
戴明浩 +4 more
doaj
[Impact of surgeon's dominant hand-side consistency with surgical approach on operational efficiency of unilateral biportal endoscopic lumbar discectomy: a prospective cohort study]. [PDF]
Li W, Gao M, Zhang L, Yu Q, Chen X.
europepmc +1 more source
[Protective effect and mechanism of TSPAN9-mediated mitocytosis in interleukin-1β-induced rat chondrocyte senescence]. [PDF]
Chen Q, Da W, Luo N, Shen B.
europepmc +1 more source
[Research progress on the application of molecularly imprinted nanozymes in the field of biosensing]. [PDF]
Zhang X, Liu S, Pan J.
europepmc +1 more source
[Effects of cold atmosphere plasma treatment on the biological behavior of human gingival fibroblasts]. [PDF]
Zheng M +7 more
europepmc +1 more source
[Niemann-Pick disease with two missense mutations in SMPD1 gene: a case report and literature review]. [PDF]
Wei Y, Guo H, Xu JN, Chen YY, Shi HX.
europepmc +1 more source

