Zobrazeno 1 - 10
of 299
pro vyhledávání: '"Junjia He"'
Publikováno v:
AIP Advances, Vol 14, Iss 4, Pp 045216-045216-9 (2024)
In spectral-based ink content measurement, improving the accuracy of the spectral collection system and reducing the algorithm complexity of the ink content measurement model are important aspects of research. This study designs a spectral collection
Externí odkaz:
https://doaj.org/article/0922eaeb1d1c47d0a5be3a9361b75b55
Publikováno v:
Frontiers in Energy Research, Vol 11 (2024)
Accurate differentiation of energy consumption information of residential users is of great significance for load planning, scheduling, operation and management of power system, and is the basic premise for realizing intelligent perception of energy
Externí odkaz:
https://doaj.org/article/061a14ef346b42c1bea1baca36fbc49c
Publikováno v:
High Voltage, Vol 8, Iss 1, Pp 111-118 (2023)
Abstract 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 positive sparks. In existing studies, no attention has been paid to whether these
Externí odkaz:
https://doaj.org/article/b823d424618d44a691d6a75e3ce5d698
Autor:
Junjia He, Xiankang Wang, Xiangen Zhao, Juhyeong Lee, Yaping Du, Xiaopeng Liu, Quan Gan, Yang Liu, Yuqin Liao
Publikováno v:
High Voltage, Vol 7, Iss 5, Pp 825-839 (2022)
Abstract Understanding the mechanism of positive leader discharge is important in lightning protection engineering and the external insulation design in high voltage power transmission systems. During the propagation of a positive leader, some proces
Externí odkaz:
https://doaj.org/article/39d4eb271ed645fb9566ea70a962d2c5
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 12, Pp n/a-n/a (2023)
Abstract To study the mechanism of space stem formation, the high‐speed direct imaging technique and Schlieren photography are used to simultaneously observe the space stems in a 1.35‐m air gap under the lightning impulse voltage. It is found tha
Externí odkaz:
https://doaj.org/article/4bc2f2f6fe4847949443c6cc05e4526c
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
Abstract The elongation and branching of long positive spark discharges in the laboratory and in lightning have been attributed to the formation of thermalized channels inside a diffuse, glow-like streamer section at the leader head. It is experiment
Externí odkaz:
https://doaj.org/article/a95ed70047234d04a51e1dcdc3db20f9
Autor:
Weijiang Chen, Rong Zeng, Junjia He, Yi Wu, Xiaoguang Wei, Taixun Fang, Zhanqing Yu, Zhao Yuan, Yifei Wu, Wandi Zhou, Bing Yang, Lu Qu
Publikováno v:
High Voltage, Vol 6, Iss 1, Pp 1-15 (2021)
Abstract 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 on the DCCB have made outstanding achievements. This article provides a brief gla
Externí odkaz:
https://doaj.org/article/6bfe8060af6045909619bab063d1ac39
Autor:
Lei Lei, Yongqiang Wang, Junjia He, Chang Cai, Qingzhi Liu, Dawei Yang, Zhiyu Zou, Lingyu Shi, Jianqin Jia, Yang Wang, Timothy R. Walsh, Jianzhong Shen, Yougang Zhong
Publikováno v:
Emerging Microbes and Infections, Vol 10, Iss 1, Pp 242-251 (2021)
Mobile colistin resistance gene mcr-1 and extended-spectrum β-lactamase gene blaCTX-M are highly prevalent in human – and pet-derived bacteria. Isolation of identical strains of mcr-1-positive Escherichia coli (MCRPEC) or blaCTX-M-positive E. coli
Externí odkaz:
https://doaj.org/article/bb3fa9a661b9475280ab9474dfcc3fbe
Autor:
Yang Liu, Xiankang Wang, Xiaopeng Liu, Lei Liu, Gang Liu, Mingchuan Liao, Lu Qu, Bing Luo, Hansheng Cai, Junjia He, Lixue Chen
Publikováno v:
Atmosphere, Vol 13, Iss 8, p 1217 (2022)
Comparing the branching features of negative leaders with different propagation directions could provide insight into the common tendency of development pathways and the formation pattern of branches in natural lightning. This paper reports an upward
Externí odkaz:
https://doaj.org/article/4f0d3bda42e74be4979f727b817894d1
Publikováno v:
AIP Advances, Vol 11, Iss 5, Pp 055303-055303-8 (2021)
Characteristics of the streamer stem are essential for the study on the stable leader inception. Experiments are conducted to observe the re-illumination of streamer stems under either rising or non-changing positive electric fields in long air gaps,
Externí odkaz:
https://doaj.org/article/b0636111381c4e658385c144f702c633