Results 71 to 80 of about 9,934 (108)

高速气流灭弧防雷间隙建弧模型的研究

Dianci bileiqi, 2012
根据气体动理论,气体放电理论和电弧等离子体理论,利用能量守恒定律,建立用于35 kV架空配电线路的高速气流灭弧防雷间隙闪络时工频电弧的建弧模型,用MATLAB软件进行计算仿真,分析高速气流的灭弧特性。仿真计算结果表明,高速气流能在0.016 5 s内吹灭工频电弧。
林盛强, 林宏, 王巨丰
doaj  

SF₆/CF₄混合气体中聚四氟乙烯绝缘表面直流闪络特性

Gaoya dianqi, 2018
文中对电极间距为5 mm的指形电极下SF6/CF4混合气体中聚四氟乙烯绝缘表面直流闪络特性展开研究,分别测量了当SF6/CF4混合气体中SF6混合比为0%100%、压强为0.10.4 MPa时绝缘试样的直流沿面闪络电压,研究压强、混合比、电压极性等因素对绝缘试样直流沿面闪络特性的影响。实验结果表明:混合气体中SF6混合比一定时,在0.10.4 MPa气压范围内,绝缘试样的直流闪络电压随气压升高而呈线性增加;0.3 MPa的20%SF6/80%CF4气体中绝缘试样的负极性直流闪络电压为52.34 kV ...
杨明智, 林莘, 温苗, 李晓龙
doaj  

[Determination of atmospheric intermediate volatility organic compounds with thermal desorption-flow modulator comprehensive two-dimensional gas chromatography- time-of-flight mass spectrometry]. [PDF]

Se Pu
Wang R, Li YJ, Wang JH, Ma CW, Jiang JK.
europepmc   +1 more source

[Predictive value of strobovideolaryngoscopy, acoustic and aerodynamic measures in the prognosis of temporally unilateral vocal fold paralysis after thyroidectomy]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2022
Chen R, Wu M, Yang J, Chen W, Liang F.
europepmc   +1 more source

[Association between serum uric acid and airflow obstruction based on the health-checkup population]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Zhou Q, Yang Q, Shi S, Li P, Sun F.
europepmc   +1 more source

[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 Zhi
Guo W, Lei Q.
europepmc   +1 more source

[Evaluation of the accuracy of three-dimensional data acquisition from liquid- interference surfaces assisted by a scanner head with a compressed airflow system]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Xu X, Zhao J, Tian S, Liu Z, Zhao X, Zhao X, Jiang T, Chen X, Ma C, Sun Y.   +9 more
europepmc   +1 more source

[Preparation of fluorescent carbon dots by flow-assisted melt polymerization for tetracycline detection in medical wastewater]. [PDF]

Se Pu
Liu ZW, Ni LX, Chi J, Qin YX, Shi ZJ, Wang Y, Wei HZ, Feng L, Sun CL.   +8 more
europepmc   +1 more source

[Determination of 40 carbonyl compounds in ambient air by high performance liquid chromatography-triple quadrupole mass spectrometry]. [PDF]

Se Pu
Li GH, Deng S, Li QQ, Zhang CL, Liu YF, Jiang B, Yao Q, Wang H, Wang BG.   +8 more
europepmc   +1 more source

[Determination of 16 organic ultraviolet absorbers in drinking water by solid phase extraction-ultra-high performance liquid chromatography-tandem mass spectrometry]. [PDF]

Se Pu
Wang Z, Zhao C, Ye BX, Chen YY.
europepmc   +1 more source