Results 61 to 70 of about 6,240 (107)

高功率Tesla变压器次级绝缘结构电场分析与设计

Gaoya dianqi
高功率Tesla变压器在脉冲功率技术领域应用广泛，但其次级线圈处于非均匀电场中，线圈匝间电压分布不均，容易导致匝间绝缘击穿。文中设计了一台双磁心Tesla变压器，利用有限元法建立次级线圈的电场仿真模型，分析其匝间的电场分布情况。针对匝间电压分布不均问题，提出次级线圈首尾两端双线并绕及增加屏蔽环来改善电场分布的措施，使最大场强小于微小油间隙的击穿场强，确保变压器次级线圈的绝缘安全。通过仿真分析发现首尾两端并绕可改善电场分布，但并绕匝数不宜过多。高压端增加屏蔽环后，场强分布更加均匀，最大场强下降62.9 ...
蔡宛辰, 金童, 沈骏峰, 王佳栋, 江进波   +4 more
doaj  

[Study on the electric field transmission characteristics of conducted-electrode tumor treating fields]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Liu K, Zhang J, Shi J, Fang H, Li X.
europepmc   +1 more source

[Association between adverse outcomes during hospitalization and early postnatal weight changes in term appropriate-for-gestational-age infants with early-onset sepsis]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Zeng SC, Zhou XL, Xiang LL, Hua ZY.
europepmc   +1 more source

[Preparation of mesoporous covalent organic framework core-shell stationary phase and its application in the analysis of astragaloside Ⅳ content in <i>Astragalus</i>]. [PDF]

Se Pu
Zhao XY, Jin JY, Liu XJ, Yan LJ, Yang SY, Zhang ZW, Zhang LY, Wu RF.   +7 more
europepmc   +1 more source

[Master manipulator of vascular intervention surgical robot based on haptic feedback]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Han G, Sun Z, Tang X.
europepmc   +1 more source

光伏—储能混合系统接入配电线路雷击过电压分析

Gaoya dianqi
雷电是造成有源配电线路故障的主要原因，分析有源配电网的雷击过电压对防雷保护具有重要意义。文中以含分布式光伏—储能系统（PV-ESS）配电网为研究对象，建立了含分布式光伏—储能系统配电线路雷击过电压计算模型，分析了不同拓扑结构下有源配电线路过电压分布规律。此外，通过改变有源配电系统中储能装置，分析了雷击过电压对储能装置的影响。结果表明：相较于链形和星形拓扑结构，环形拓扑结构下的有源配电线路受雷击过电压影响较小，应加强逆变器处的保护措施；配电系统加入储能装置后，可以减小雷击过电压的影响。
黎鹏, 周哲, 柴辰, 何一川, 吴田, 蔡超, 马志青   +6 more
doaj  

[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

[Safety and efficacy of pulsed radiofrequency therapy for zoster-associated trigeminal neuralgia under general anesthesia]. [PDF]

Zhong Nan Da Xue Xue Bao Yi Xue Ban
Zhang J, Feng S, Zou W, Liu Z, Wang E, Yan J, Bai N, Yang S, Luo J, Ren F.   +9 more
europepmc   +1 more source

[Application of biological age for cardiovascular risk prediction in a community-based Chinese cohort]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Lu M, Wang B, Kang J, Liu Q, Zhou Y, Sun Y, Shen P, Lin H, Tang X, Gao P.   +9 more
europepmc   +1 more source

[Preparation and <i>in vitro</i> biological performance evaluation of tannic acid-Brushite <i>in situ</i> composite bone cement material]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zeng C, Tang J, Li T, Gao W.
europepmc   +1 more source