Results 81 to 90 of about 409 (111)

硅橡胶表面水滴在直流电场中的荷电闪络特性研究

open access: yesDianci bileiqi
复合绝缘子由于其优良的憎水性和憎水迁移性而广泛应用于特高压输电线路中。在雨、雾、露水等潮湿天气条件下,复合绝缘子表面分离的水滴将大幅度降低其表面闪络电压。由于硅橡胶复合绝缘子表面水滴的直流闪络电压通常低于交流闪络电压,因此研究直流电场下硅橡胶表面水滴的闪络现象具有重要意义。通过试验研究了长时间直流电场作用下水滴的荷电闪络过程,并从理论上分析了其荷电闪络机理。研究结果表明,硅橡胶表面单水滴由于负极性端的电晕放电而荷上正电荷,荷电的水滴会在长时间直流电场的作用下出现“鼓包”现象,降低了硅橡胶表面的闪络电压 ...
谢超, 钟昆禹, 任飞, 杨洁民
doaj  

[A review on electroencephalogram based channel selection]. [PDF]

open access: yesSheng Wu Yi Xue Gong Cheng Xue Za Zhi
Li X   +6 more
europepmc   +1 more source

[Application of scalp electroencephalogram in treatment of refractory epilepsy with vagus nerve stimulation]. [PDF]

open access: yesSheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2020
Qin X   +6 more
europepmc   +1 more source

[Research progress in surgical techniques for treatment of limb lymphedema]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
He T, Wang Z, Zhang T, Yang F, Liu B.
europepmc   +1 more source

[Application and exploration of Smile Lite MDP portable photography system in aesthetic photography of anterior teeth]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban, 2020
Liu M   +7 more
europepmc   +1 more source

1H-NMR-based metabolomics study on coronary heart disease with blood-stasis syndrome and phlegm syndrome. [PDF]

open access: yesZhong Nan Da Xue Xue Bao Yi Xue Ban, 2021
Yi M   +5 more
europepmc   +1 more source

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