Dianci bileiqi复合绝缘子受紫外线、电场、湿度和温差等因素的影响，不可避免地出现老化，引发绝缘失效。通过热失重试验(TGA)，获得了硅橡胶复合绝缘子内外层、不同升温速率及不同运行年限下的热失重曲线，计算了活化能，建立了Arrhenius寿命方程。通过遗传算法(GA)寻找支持向量机(SVM)中的最优惩罚系数C和核函数参数g，提出了一种基于GA-SVM的寿命预测模型，并采用960组数据进行训练测试。结果表明：硅橡胶材料中氢氧化铝等小分子物质随着运行年限的百分比含量略有升高，而有机硅等大分子物质的含量明显降低。由于GA ...
李天阳 +4 more
doaj
Dianci bileiqi复合绝缘子受紫外线、电场、湿度和温差等因素的影响，不可避免地出现老化，引发绝缘失效。通过热失重试验（TGA），获得了硅橡胶复合绝缘子内外层、不同升温速率及不同运行年限下的热失重曲线，计算了活化能，建立了Arrhenius寿命方程。通过遗传算法（GA）寻找支持向量机（SVM）中的最优惩罚系数C和核函数参数g，提出了一种基于GA-SVM的寿命预测模型，并采用960 组数据进行训练测试。结果表明：硅橡胶材料中氢氧化铝等小分子物质随着运行年限的百分比含量略有升高，而有机硅等大分子物质的含量明显降低。由于GA ...
李天阳 +4 more
doaj
Dianci bileiqi高湿热地区常出现降雨和晨间凝露现象，使得输电线路复合绝缘子表面较长时间存在细小水珠。外施电场存在时，水珠三介质交界点处电场强烈畸变，可造成复合绝缘子硅橡胶材料表面电晕放电和憎水性降低进而导致老化加剧，严重时可引起沿面闪络。本研究基于有限元多物理场仿真软件建立了三维模型，采用有限元方法和控制变量法仿真研究了水平背景电场下硅橡胶表面离散水珠对电场分布的影响以及水珠体积、水珠个数、水珠间距、水珠静态接触角等参数对电场畸变程度的影响。此外，通过实际水珠试验解释了水珠在交流电压下形变引起的电晕放电变化过程 ...
王敩青 +5 more
doaj
[Epidemiological characteristics of adult inpatients with diabetes-related chronic non-healing wounds in Hainan province]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za ZhiYao JL +10 more
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XuanHuGPT: parameter-efficient fine-tuning of large language model in the field of traditional Chinese medicine. [PDF]
Chin MedTong X +9 more
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[Medical treatment standards for emergency burn wounded (2025 edition)]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiNational Health Commission Of The People's Republic Of China.
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[Identification of efferocytosis-related genes in osteoarthritis and prediction of traditional Chinese medicines based on bioinformatics and machine learning]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoXiang K +5 more
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[Disrupting atherosclerotic plaque formation <i>via</i> the "<i>qi</i> meridian-blood channel": mechanism of <i>Jiangzhi Huaban</i> Decoction for regulating hepatic reverse cholesterol transport to improve atherosclerosis]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoWang H +8 more
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[Long-term prognosis and influencing factors of anterior composite resin restoration]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiChen W, Wu F, Wei X.
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[Researches and clinical translation of smart dressings]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za ZhiLyu GZ, Zhao P.
europepmc +1 more source