Results 51 to 60 of about 323 (108)

[Overwork damages myocardial energy metabolism homeostasis in mice]. [PDF]

open access: yesNan Fang Yi Ke Da Xue Xue Bao
Cui J   +6 more
europepmc   +1 more source

变电站并联电容器投切过电压幅值影响因素分析

open access: yesDianci bileiqi
变电站并联电容器长期承受操作过电压,可能造成电容器老化、故障,甚至击穿损坏,甚至可能导致电力系统故障并造成严重后果。针对以上问题,本研究提出了一种可以模拟断路器投切过程中电气强度恢复过程、投切随机特性和介质重燃的断路器模型,并根据变电站的无功补偿电容器组实际连接方式及回路特征,利用PSCAD软件进行了变电站仿真建模。最后,基于变电站的运行特点,本研究对并联电容器投切过程中过电压影响因素进行了分析,如断路器分合特性对过电压的影响、不同设备安装位置对过电压的影响和不同对地电容对过电压的影响。研究结果表明 ...
刘志林   +10 more
doaj  

[Associations between indoor volatile organic compounds and nocturnal heart rate variability of young female adults: A panel study]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban, 2023
Ji XZ   +8 more
europepmc   +1 more source

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