Results 51 to 60 of about 307 (100)

C₄F₇N二元混合气体电弧温度特性研究

Gaoya dianqi
为实现“2030年碳达峰，2060年碳中和”的减排目标，推进电力行业绿色发展，开发环保型绝缘气体以减少SF6使用已成为研究热点。环保型绝缘气体C4F7N凭借优良的绝缘和环保性能被广泛关注。文中基于磁流体力学方程搭建二维轴对称喷口电弧模型，通过数值计算对比研究C4F7N/CO2与C4F7N/N2二元混合气体、SF6、CO24种气体介质电流过零前后电弧温度特性，分析4种介质灭弧性能差异原因。研究表明，与CO2气体相比，C4F7N二元混合气体电弧径向温度分布及弧芯温度冷却速度更接近SF6气体 ...
边晨曦, 何柏娜, 姜仁卓, 张婧茹, 贺兴民, 董彦辰, 刘雨佳, 娄辉   +7 more
doaj  

[Determination of 17 bisphenol compounds in human urine by solid supported liquid-liquid extraction-ultra-high performance liquid chromatography-tandem mass spectrometry]. [PDF]

Se Pu
Jin Y, Zhang LG, Zhou JX, Ma JJ, Yuan LL, Xiao P, Wang GQ.   +6 more
europepmc   +1 more source

温度对SF₆/CF₄混合气体尖板放电特性的影响

Gaoya dianqi
气体绝缘电气设备使用SF6/CF4混合气体可以避免SF6气体液化，适合在极寒地区应用。为获得设备内部存在尖端放电缺陷时SF6/CF4混合气体的绝缘性能受温度的影响，采用尖板电极模拟缺陷尖端放电，开展SF6/CF4混合气体在0.1~0.7 MPa气压范围和-50~20 ℃温度范围的工频放电实验。结果表明，不同温度下SF6/CF4混合气体的击穿电压随气压升高均出现先升高—再降低—再升高的驼峰趋势；但随着温度降低，驼峰峰值处的击穿电压随温度降低出现降低趋势，而在非驼峰峰值处的击穿电压随温度降低而基本不变 ...
陈远东, 郑宇, 孟辉, 沈腾达, 梁建, 周文俊   +5 more
doaj  

[A Case of Combined Small Cell Lung Cancer and Literature Review]. [PDF]

Zhongguo Fei Ai Za Zhi
Gao M, Lu X, Hao B, Li N, Xie S.
europepmc   +1 more source

[Expert Consensus on Shared Decision-making in the Diagnosis and Treatment 
of Ground-glass Opacity-featured Lung Adenocarcinoma]. [PDF]

Zhongguo Fei Ai Za Zhi
Zhao X, Cai J, Zhao D, Chen C, Compilation Committee of the Expert Consensus on Shared Decision-making in the Diagnosis and Treatment of Ground-glass Opacity-featured Lung Adenocarcinoma.   +4 more
europepmc   +1 more source

[Application of infrared thermography in breast reconstruction and plastic surgery and limb reconstruction]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Jian H, Mu L, Pan J, He G, Song T, Chen X, Wu H, Xie K, Wang S, Xu Y, Huang L, Liu Y, Guo L, Zhang C, Chen Y, Tang S, Chen P, Liu Y, Xie M, Yang L, Cheng X, Dong Y, Han J, Yang W, Miao Y, Wu H, Yu Y.   +26 more
europepmc   +1 more source

[Technical standards for the diagnosis and treatment of pediatric total facial management in Shenzhen]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2023
Zhang Q, Dai J, Li L.
europepmc   +1 more source

[A Case of Refractory Pulmonary Enteric Adenocarcinoma with EGFR Sensitive Mutation]. [PDF]

Zhongguo Fei Ai Za Zhi
Wang X, Mu N, Li F, Liu M, Xu Y, Wu S, Lv H, Ma C.   +7 more
europepmc   +1 more source

[Enteral nutrition support for lysinuric protein intolerance: a case report and literature review]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi, 2023
Quan J, Liu XF, Hu K, Hou Q.
europepmc   +1 more source

C₄F₇N-air混合气体在稍不均匀和极不均匀电场中的工频绝缘特性分析

Gaoya dianqi
近年来，作为SF6有效替代气体之一，七氟异丁腈（C4F7N）因其优异的电气性能和物化特性而受到关注与讨论，然而由于C4F7N的液化温度较高，需要与低液化温度的缓冲气体并用。选择空气作为缓冲气体，在稍不均匀电场与极不均匀电场下，通过工频击穿实验研究气压、混合占比和电极间隙对C4F7N-air混合气体工频击穿电压的影响。结果发现：C4F7N-air混合气体在两个电场下的工频击穿电压随着电极间隙的增大而近似线性增加，在极不均匀电场下，出现明显“驼峰”效应，混合比为8%~16%的C4F7N ...
陈曦, 陈炯, 徐年飞, 邓云坤, 曲佳璐   +4 more
doaj