Results 81 to 90 of about 1,350 (191)

Leader Propagation Characteristics Under Positive Lightning Impulse Voltages

IEEE Access
Lightning strikes on transmission lines often generate overvoltage, which is the primary reason for insulator string flashover. This overvoltage, with a rapid rise time of just a few microseconds, causes leader propagation characteristics to differ ...
Lei Jia, Song Zhang, Lu Qu, Yongxiang Cai, Huaifei Chen, Xiaobing Xiao, Ruihan Qi, Minchuan Liao, Jian Hu   +8 more
doaj   +1 more source

Enabling Recovery Following Peer‐Perpetrated Sexual Violence: Lived Experiences of Young Women in Sweden

Scandinavian Journal of Caring Sciences, Volume 40, Issue 3, September 2026.
ABSTRACT Introduction Peer‐perpetrated sexual violence is very common in young adult relationships. In Sweden, one in four young women has experienced sexual violence, and it is a leading cause of mental health issues among young women today. Knowledge about how recovery is enabled for young women with experience of peer‐perpetrated sexual violence ...
Jenni Isaksson, Lina Palmér, Maria Lundvall   +2 more
wiley   +1 more source

Statistical Evidence for Factors Associated With Positive Leader Branching in Long Air‐Gap Discharges

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 16, 28 August 2026.
Abstract Branching is a common feature in positive leader development, which changes the channel topology and significantly influences discharge behavior. However, the factors associated with its occurrence remain poorly understood. In this study, an event‐based analytical framework was established using synchronized optical observations and electrical
Lili Guo, Xiangen Zhao, Xiankang Wang, Xiaopeng Liu, Yao Yao, Yaping Du, Junjia He   +6 more
wiley   +1 more source

Predicting Electrically Generated Hydrogen Oxides From Ultraviolet Radiation Emissions

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 15, 16 August 2026.
Abstract Electrical discharges such as lightning and corona discharges generate extreme amounts of hydroxyl radical (OH), the atmosphere's most important oxidizer, enough for electrical discharges to be a globally significant source of OH. However, there are few field measurements of electrically generated OH (LOH), hindering attempts to better ...
J. M. Jenkins, W. H. Brune
wiley   +1 more source

Study on temperature rise prediction of ZnO varistors under multiple lightning strikes based on BP neural network and microscopic

High Temperature Materials and Processes
ZnO varistors are widely used in the field of lightning protection. After being struck by lightning, ZnO varistors absorb heat, which can lead to temperature rise and even damage, posing a serious safety threat to electrical safety.
Li Chunying, Zhang Chunlong, Lv Qing
doaj   +1 more source

Flashover Performance Test with Lightning Impulse and Simulation Analysis of Different Insulators in a 110 kV Double-Circuit Transmission Tower

Energies, 2018
The flashover performance of insulators is the foundation of the calculation of precise lightning protection. The material and structure of an insulator affect its flashover performance but the research on the differences in the flashover performance of ...
Yaqi Zhang, Licheng Li, Yongxia Han, Yaoxuan Ruan, Jie Yang, Hansheng Cai, Gang Liu, Yi Zhang, Lei Jia, Yutang Ma   +9 more
doaj   +1 more source

Methane Emissions From Wildfires: Trends and Anomalies

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 15, 16 August 2026.
Abstract Wildfires emit smoke particles and trace gases including greenhouse gases into the atmosphere, impacting the environment and leading to detrimental impacts on human health and economy. The estimation of spatially and temporally resolved methane emissions from biomass burning (BB) provides critical information in developing measurement‐informed
Aihua Zhu, Shobha Kondragunta, Ivan Csiszar, Xiaoyang Zhang, Yongchang Ye, Fangjun Li   +5 more
wiley   +1 more source

Significantly Improved Electrical Breakdown Strength of Natural Ester Liquid Dielectrics by Doping Ultraviolet Absorbing Molecules

IEEE Access, 2019
In this paper, we experimentally demonstrate that molecules with maximum absorption wavelength corresponding to the first excitation energy of base liquid molecules are able to significantly improve the electrical performances of natural ester oils.
Suning Liang, Feipeng Wang, Zhengyong Huang, Weigen Chen, Youyuan Wang, Jian Li   +5 more
doaj   +1 more source

Lightning Impulse Withstand of Natural Ester Liquid

Energies, 2018
Due to the low biodegradability of mineral oil, intense research is conducted to define alternative liquids with comparable dielectric properties. Natural ester liquids are an alternative in focus; they are used increasingly as insulating liquid in distribution and power transformers. The main advantages of natural ester liquids compared to mineral oil
Stephanie Haegele, Farzaneh Vahidi, Stefan Tenbohlen, Kevin J. Rapp, Alan Sbravati   +4 more
openaire   +2 more sources

Experimental Study on Performance of SF6+N2 Mixed Gas Insulation

MATEC Web of Conferences, 2016
This paper designed and constructed a 126kV GIS partial discharge test platform, performed frequency breakdown tests and lighting impulse tests at temperature of -30~20℃to SF6/N2 gas mixture.
Lu Gang, Su Zhen Xi, Xu Ou, Zhang Liang, Lan Gong Yu, Liu Yang, Zhang Hong Da   +6 more
doaj   +1 more source