Dianci bileiqi, 2019 多重雷击是自然界中一种常见的现象,研究其基本特性和对线路避雷器的冲击影响具有实际参考意义。首先对南方电网范围内75条输电线路沿线的12 763次落雷进行统计,发现28.33%的落雷极有可能为多重雷击（落雷位置接近且雷击时间间隔小于0.1 s）,多重雷的连续雷击频次大部分为2次～6次,幅值多为5 kA～50 kA。多重雷击主要以绕击形式对线路及避雷器产生危害。计算表明典型线路避雷器一般可承受较小雷电流（10 kA及以下）连续多重雷击,但当多重雷击的电流幅值较大（20 kA及以上）时 ...
廖民传 +4 more
doaj
Gaoya dianqi为了比较不同类型冲击电流对氧化锌（ZnO）压敏电阻直流老化的影响，将相同类型的ZnO压敏电阻样品分别开展2 ms方波（峰值为2 kA）耐受试验和4/10 μs冲击电流（峰值为100 kA）试验。实验结果表明，在1~3轮（3~9次）的冲击耐受下，2 ms方波对ZnO压敏电阻的老化特性能起到一定优化作用，而4/10 μs大电流冲击则使得ZnO压敏电阻老化特性持续劣化。利用扫描电子显微镜（SEM）、光谱仪、数字源表研究其微观结构以及电气性能参数变化。结合实验结果分析原因，4/10 ...
赵江泽 +4 more
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[Efficacy and safety of super electroconvulsive therapy for treatment-resistant depression: a retrospective analysis of 292 cases]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoAn J, Chi Z, Zhao C, Li Y, Wang R, Hu Y.
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[Clinical exploration and practice of a 16-step new model of comfortable supragingival scaling]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiChen Y +6 more
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[Clinical characteristics and prognosis of primary immune thrombocytopenia complicated with diffuse alveolar hemorrhage]. [PDF]
Zhonghua Xue Ye Xue Za ZhiAn ZY +8 more
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[Interpretation of the 2023 International Society for Burn Injuries "Surviving Sepsis After Burn Campaign"]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za ZhiZhu W, Peng YZ, Luo GX, Yuan ZQ.
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[Comparison of the efficacy of sigmoid sinus constriction plus cartilage reconstruction and sigmoid sinus return surgery in sigmoid sinus-related pulsatile tinnitus]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za ZhiCao W, Wu Z, Zhao Y, Tong B, Yao K.
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[Pneumothorax during pediatric laparoscopic high ligation of hernia sac: A case report]. [PDF]
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[Study on simulated airflow dynamics of children with obstructive sleep apnea treated by different surgical methods]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za ZhiGuo W, Lei Q.
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