Results 81 to 90 of about 65,483 (305)

Study on the Direct Current Breakdown Characteristics and Influence of Electric Field Distribution in Water Droplets in Rod–Plate Air Gaps

Applied Sciences
This study primarily simulates the flashover phenomenon between the metal fittings (rods) and the skirt surface (plates) of insulators when water droplets traverse between them under heavy rain conditions.
Jianli Zhao, Zhaoyang Du, Jiankun Zhao, Song Fu, Bin Cao   +4 more
doaj   +1 more source

Comparative Study of Breakdown Voltage of Mineral, Synthetic and Natural Oils and Based Mineral Oil Mixtures under AC and DC Voltages

Energies, 2017
This paper deals with a comparative study of AC and DC breakdown voltages of based mineral oil mixtures with natural and synthetic esters mainly used in high voltage power transformers.
Abderrahmane Beroual, Usama Khaled, Phanuel Seraphine Mbolo Noah, Henry Sitorus   +3 more
doaj   +1 more source

Brainstem and Cerebellar Volume Loss and Associated Clinical Features in Progressive Supranuclear Palsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Progressive Supranuclear Palsy (PSP) is a neurodegenerative ‘tauopathy’ with predominating pathology in the basal ganglia and midbrain. Caudal tau spread frequently implicates the cerebellum; however, the pattern of atrophy remains equivocal.
Chloe Spiegel, Timothy P. Siejka, Cassandra Marotta, Josh J. Y. Lee, Kelly Bertram, Terence J. O'Brien, Meng Law, Lucy Vivash, Ian H. Harding   +8 more
wiley   +1 more source

Normal‐Appearing White Matter Injury Mediates Chronic Deep Venous Hypoxia and Disease Progression in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore how cerebral hypoxia and Normal‐Appearing White Matter (NAWM) integrity affect MS lesion burden and clinical course. Methods Seventy‐nine MS patients, including 13 clinically isolated syndrome (CIS) patients and 66 relapsing–remitting multiple sclerosis (RRMS) patients, and 44 healthy controls (HCs) were recruited from ...
Xinli Wang, Huiying Wang, Zhizheng Zhuo, Ai Guo, Ke Lv, Decai Tian, Chao Chai, Yunyun Duan, Shuang Xia   +8 more
wiley   +1 more source

2 kV Al0.64Ga0.36N-channel high electron mobility transistors with passivation and field plates

Applied Physics Express
High voltage (∼2 kV) Al _0.64 Ga _0.36 N-channel high electron mobility transistors were fabricated with an on-resistance of ∼75 Ω. mm (∼21 mΩ. cm ^2 ). Two field plates of variable dimensions were utilized to optimize the breakdown voltage.
Md Tahmidul Alam, Jiahao Chen, Kenneth Stephenson, Md Abdullah-Al Mamun, Abdullah Al Mamun Mazumder, Shubhra S. Pasayat, Asif Khan, Chirag Gupta   +7 more
doaj   +1 more source

Study on the influence of O2 on the breakdown voltage and self-recovery characteristics of c-C4F8/N2 mixture

AIP Advances, 2018
The c-C4F8 gas is considered to have great potential as a gaseous medium for use in gas-insulated equipment due to its good insulation properties and its relatively low greenhouse gas potential (Global warming potential, GWP) relative to SF6.
Song Xiao, Shuangshuang Tian, Yann Cressault, Xiaoxing Zhang, Ju Tang, Yi Li, Zaitao Deng   +6 more
doaj   +1 more source

Significant improvement of breakdown voltage of Al0.86Ga0.14N Schottky barrier diodes by atomic layer etching

Surface defects in Al-rich AlGaN Schottky barrier diodes (SBDs) contribute to high reverse leakage currents, which limit breakdown voltage—a critical parameter for power applications.
Ren, Kexin, Li, Xiaohang, Liu, Zhiyuan, Tang, Xiao, Jiang, Zixian, Nong, Mingtao, Liu, Tingang, Garcia, Glen Isaac Maciel, Cao, Haicheng   +8 more
core   +1 more source

Choroid Plexus Enlargement and USPIO‐Based Inflammatory Feature in Cerebral Small Vessel Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective The choroid plexus (CP) is a key component of the blood–cerebrospinal fluid barrier (BCSFB), but its mechanism of action in cerebral small vessel disease (CSVD) remains unclear. This study investigated CP volume (CPV) alterations and their association with conventional imaging markers in CSVD and explored the underlying role of ...
Yongqiang Qu, Xiaoning Ren, Cuihua Fan, Chun Li, Lijie Zhang, Zaiqiang Zhang, Shaowu Li, Zhongmeng Lai, Bin Cai, Ying Fu, Yi Lin, Zhibao Zhu   +11 more
wiley   +1 more source

Electrical Discharge Triggered Breakdown Phenomena in Main Gap

International Journal of Electrical Engineering and Applied Sciences, 2018
In high-voltage techniques, electrical discharges represent complex problem. The results of the research on the breakdown phenomena in high voltage electrical apparatus insulated by gas can be employed to obtain external and internal insulation design ...
abderrahmane settaouti
doaj  

Characteristics of electrical response and permeability law of coal mass under electric pulse

Earth Energy Science
Improving the permeability of coal seam is the key factor to realize efficient and safe mining of coalbed gas. In order to study the effect of high-voltage pulse breakdown on coal permeability, the multi-field coupling high-voltage pulse crack coal ...
Xianfeng Liu, Xueqi Jia, Baisheng Nie, Song Bao, Chuang Li, Chengyi He   +5 more
doaj   +1 more source