Results 61 to 70 of about 302 (101)
["Leverage pry-off method" for effective prevention of thermal injury during microwave ablation of benign thyroid nodules]. [PDF]
Nan Fang Yi Ke Da Xue Xue Bao, 2023 Wu F, Wu Q, Xu W, Wu Z, Liu L, Zhou L.
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Gaoya dianqi电缆中间接头结构复杂易出现故障，一旦出现气隙、杂质等微观缺陷，就可能引发电场畸变进而生成电树枝甚至增加击穿风险。并且电缆接头由于空间电荷积聚及温度梯度引发的场强翻转等问题可能引起绝缘击穿。将±200 kV高压直流电缆中间接头设为研究对象，通过有限元仿真软件研究不同温度梯度（ΔT）下生长及滞长阶段电树枝缺陷对电缆接头稳态、暂态电场分布特性的影响。结果表明，当ΔT达到一定值时，SIR和XLPE绝缘内会发生场强翻转；稳态电场下，生长期内电树枝引发的局部电场最大值远高于无缺陷时场强 ...
王卓 +4 more
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Gaoya dianqi, 2015 近年来,北京电网出现过多起交联电缆振荡过电压击穿的事故,对电网安全造成了极大的威胁。文中深入研究了交联电缆振荡过电压击穿事故的原因,以及事故发生发展的过程,进一步认识了振荡过电压对电力设备的影响。笔者以某110 kV变电站35 kV电缆击穿故障为例,首先给出系统接线及事故概况,然后通过电缆中间接头解体检查与对故障录波数据的深入分析,指出故障原因是由于吊车碰架空导线造成瞬时单相接地,引起了局部35 kV系统的低频振荡,产生振荡过电压,造成电缆相间绝缘击穿,发生相间短路故障。最后 ...
赵雪骞 +6 more
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Gaoya dianqi, 2015 针对电缆出线的GIS设备,提出了在电缆接头绝缘子处进行局部放电脉冲电流法检测的信号传感方法。对于一个三相共箱式的GIS设备,将脉冲电流检测法和UHF检测法相结合,实现了对局部放电的更精确的定位和诊断,可确定局部放电所在的相。
刘少辉
doaj
[Sensing volume of tissue dielectric property measurement with open-ended coaxial probe]. [PDF]
Nan Fang Yi Ke Da Xue Xue Bao, 2020 Liu Y, Huang Y, Xin X, Yu X.
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[Development of on-line lateral stiffness measurement system for anterior cruciate ligament and its influence on anterior cruciate ligament reconstruction]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2021 Cui Z +5 more
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[State-of-the-art in peripheral nerve injury diagnosis and therapy]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiSun J, Chen L.
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[Identification and Underlying Mechanisms of Immune Cell- and Senescence-Related Biomarkers in Atrial Fibrillation]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanHuang W, Liu E, Fu H.
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[An investigation study on the technology and training level of ski patrol]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanBai P +7 more
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