Results 61 to 70 of about 639 (101)

[Non-invasive positive pressure ventilation for residual OSAHS with hypercapnia: a case report]. [PDF]

open access: yesLin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Yang L   +6 more
europepmc   +1 more source

冲击电压下变压器油中放电电弧放电通道形态及激波特性研究

open access: yesGaoya dianqi
油中电弧放电是变压器燃爆事故的主要诱因,随着电力系统发展和电压等级提升,暂态脉冲电压频率和幅值增加,使得油中电弧放电行为变得更加复杂。本研究旨在探讨脉冲电压下变压器油中电弧放电的电弧及激波形态变化。为此,设计并搭建了高压脉冲放电油击穿实验平台,通过同步采集脉冲电弧放电过程中的电压-电流信号,并结合高速摄影技术,捕捉了油中电弧放电动态演变及激波的传播过程。研究分析了放电过程中电弧与激波的形态变化规律及其相互作用机制,并探讨了不同电极间隙对电弧及激波直径的影响。实验结果表明 ...
贾灵杰   +4 more
doaj  

[Clinical practice guidelines for day surgery of tonsils and adenoids in children]. [PDF]

open access: yesLin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Li Q, Gu Q.
europepmc   +1 more source

[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

[Periodontitis and systemic diseases: Thinking and explorations]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban
Cao P, Luan Q.
europepmc   +1 more source

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