Search Results - "He, Junjia"

Local degradation diagnosis for cable insulation based on broadband impedance spectroscopy by Zhou, Zhiqiang, Zhang, Dandan, He, Junjia, Li, Menghu

“…The diagnosis of portions in a cable that are severely degraded before breakdown occurs is of prime importance. This paper presents a novel method based on the…”
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Elongation and branching of stem channels produced by positive streamers in long air gaps by Zhao, Xiangen, Becerra, Marley, Yang, Yongchao, He, Junjia

“…The elongation and branching of long positive spark discharges in the laboratory and in lightning have been attributed to the formation of thermalized channels…”
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A New Denoising Method for UHF PD Signals Using Adaptive VMD and SSA-Based Shrinkage Method by Zhang, Jun, He, Junjia, Long, Jiachuan, Yao, Min, Zhou, Wei

“…Noise suppression is one of the key issues for the partial discharge (PD) ultra-high frequency (UHF) method to detect and diagnose the insulation defect of…”
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Design of printing ink spectral collection system and research on ink proportion prediction method by Zhang, Wenhao, Liu, Xinru, Zhang, Rui, Jiang, Fei, He, Junjia, Fang, Shuyang

“…In spectral-based ink content measurement, improving the accuracy of the spectral collection system and reducing the algorithm complexity of the ink content…”
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On a Possible Mechanism of Space Stem Formation in Negative Long Sparks by Zhao, Xiangen, Popov, Nikolay A., Gan, Quan, Ding, Yuxuan, Du, Yaping, He, Junjia

“…To study the mechanism of space stem formation, the high‐speed direct imaging technique and Schlieren photography are used to simultaneously observe the space…”
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Integrated aquaculture contributes to the transfer of mcr-1 between animals and humans via the aquaculture supply chain by Shen, Yingbo, Lv, Ziquan, Yang, Lu, Liu, Dejun, Ou, Yanran, Xu, Chunyan, Liu, Weiwen, Yuan, Dongmei, Hao, Yuxin, He, Junjia, Li, Xing, Zhou, Yuqing, Walsh, Timothy R., Shen, Jianzhong, Xia, Junjie, Ke, Yuebin, Wang, Yang

“…Since its discovery in 2015, the mobile colistin resistance gene mcr-1 has been reported in bacteria from >50 countries. Although aquaculture-associated…”
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Association of colistin residues and manure treatment with the abundance of mcr-1 gene in swine feedlots by Xia, Xi, Wang, Zheng, Fu, Yulin, Du, Xiang-dang, Gao, Binwen, Zhou, Yuqing, He, Junjia, Wang, Yang, Shen, Jianzhong, Jiang, Haiyang, Wu, Yongning

“…The extensive use of colistin in swine production may have contributed to the recent emergence of corresponding mobile resistance gene mcr-1. The use of…”
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Re-illumination of streamer stems under either rising or non-changing positive electric fields in long air gaps by Zhao, Xiangen, Wang, Xiankang, Liu, Xiaopeng, Liu, Yang, Gan, Quan, Qi, Ruihan, He, Junjia

“…Characteristics of the streamer stem are essential for the study on the stable leader inception. Experiments are conducted to observe the re-illumination of…”
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Distribution of stems around the HV electrode in a 0.74-m air gap under positive pulses by Jiang, Zhenglong, He, Junjia, Zhao, Xiangen, Xiao, Pei, Yang, Yongchao

“…A schlieren system with a temporal resolution of 5 μs and a spatial resolution of 70 μm was established; it was used to examine the spatial distribution of…”
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Continuous and Discontinuous Streamer Leader Propagation Phenomena under Slow Front Impulse Voltages in a 10-meter Rod-Plane Air Gap by Shah, Wahab Ali, He, Hengxin, He, Junjia, Yang, Yongchao

“…Investigation of positive streamer-leader propagation under slow front impulse voltages can play an important role in the quantitative research of positive…”
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Development and prospect of direct‐current circuit breaker in China by Chen, Weijiang, Zeng, Rong, He, Junjia, Wu, Yi, Wei, Xiaoguang, Fang, Taixun, Yu, Zhanqing, Yuan, Zhao, Wu, Yifei, Zhou, Wandi, Yang, Bing, Qu, Lu

“…The direct‐current circuit breaker (DCCB) is the most ideal choice for DC fault isolation in DC grids. Despite a late start, China's research and development…”
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Effect of branching on spikes of positive leader current by Zhao, Xiangen, He, Junjia, He, Hengxin

“…Positive leader current spikes were observed in long air gap discharge. However, there has been no explanation on this phenomenon so far, and some leader…”
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Some Key Parameters of Different Caliber Solid-Armature Railgun Related to Linear Current Density by Chen, Lixue, He, Junjia, Xia, Shengguo, Yuan, Zhao, He, Hengxin

“…By introducing current carrier margin coefficient named α, ratio of armature thickness to armature width named β, and ratio of armature height to armature…”
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Characteristics of Electric Currents in Upward Lightning Flashes From a Windmill and its Lightning Protection Tower in Japan, 2005–2016 by Wang, Xiankang, Wang, Daohong, He, Junjia, Takagi, Nobuyuki

“…We examine the lightning current of 81 upward lightning (UL) initiated from a windmill and its lightning protection tower in Japan under winter thunderstorms…”
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Some Key Parameters of Monolithic C-Type Armature in Rectangular Caliber Railgun by Chen, Lixue, He, Junjia, Xia, Shengguo, Yuan, Zhao, He, Hengxin

“…Monolithic C-type armature is one of the most important armatures in electromagnetic railgun. Some key parameters of monolithic C-type armature in rectangular…”
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Co-existence of two novel phosphoethanolamine transferase gene variants in Aeromonas jandaei from retail fish by Liu, Dejun, Song, Huangwei, Ke, Yuebin, Xia, Junjie, Shen, Yingbo, Ou, Yanran, Hao, Yuxin, He, Junjia, Li, Xing, Zhou, Yuqing, Fu, Jiani, Wang, Yang, Lv, Ziquan, Wu, Congming

“…•Co-existence of two novel phosphoethanolamine transferase (eptA) gene variants in Aeromonas.•Each eptA variant confers high-level resistance to colistin in…”
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Effect of vacuum arc cathode spot distribution on breaking capacity of the arc-extinguishing chamber by Ding, Can, Yuan, Zhao, He, Junjia

“…A DC circuit breaker performs a key function in breaking an intermediate-frequency (IF) current since breaking a pure IF current is equivalent to breaking a…”
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Experimental Studies on Melt Erosion at Rail-Armature Contact of Rail Launcher in Current Range of 10-20 kA/mm by Xia, Shengguo, Hu, Yuyang, Chen, Lixue, He, Junjia, Yuan, Zhao, He, Hengxin, Yan, Ping, Li, Jun

“…Sliding electrical contact between rail and armature in rail launchers is characterized by high speed and large current. Melt erosion is caused by the current…”
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Multiple discharges before leader inception in long air gaps under positive switching impulses by Zhao, Xiangen, Lee, Juhyeong, Liu, Gang, Jia, Lei, Liu, Yang, He, Junjia, Du, Yaping

“…There are multiple corona bursts before leader inception when the rising rate of the applied voltage or electric field is not sufficiently high enough in long…”
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Effect of branching on the channel tortuosity of positive leader by Zhao, Xiangen, He, Junjia, He, Hengxin, Li, Zhijun, Huo, Feng

“…Experiments on leader development were carried out in 10 m and 6 m rod-plane gaps under positive impulse. Leader propagation was recorded by high speed CCD…”
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