Results 81 to 90 of about 12,530 (287)

Evaluation of Lightning Impulse Test by Frequency Response Analysis [PDF]

, 2006
In this work are presented the basis for improving the interpretation of transformer lightning impulse test and the development of a graphical user interface system, which allows comparisons of time domain data and frequency response.
Ramírez, Jorge, Valecillos, Baudilio
core   +3 more sources

PARP inhibition and pharmacological ascorbate demonstrate synergy in castration‐resistant prostate cancer

Molecular Oncology, EarlyView.
Pharmacologic ascorbate (vitamin C) increases ROS, disrupts cellular metabolism, and induces DNA damage in CRPC cells. These effects sensitize tumors to PARP inhibition, producing synergistic growth suppression with olaparib in vitro and significantly delayed tumor progression in vivo. Pyruvate rescue confirms ROS‐dependent activity.
Nicolas Gordon, Peter T. Gallagher, Orly I. Richter, Neermala Poudel Neupane, Amy C. Mandigo, Jennifer J. McCann, Emanuela Dylgjeri, Irina Vasilevskaya, Christopher McNair, Channing J. Paller, Wm. Kevin Kelly, Karen E. Knudsen, Matthew J. Schiewer, Ayesha A. Shafi   +13 more
wiley   +1 more source

Study of aging life for EMU arresters based on aging tests and principal component analysis method

机车电传动
On-board lightning arresters are critical components for ensuring the safety of EMUs operating on high-speed railways. This paper focuses on arresters mounted on EMUs as the research object.
LI Ying, SONG Yanjun, XU Yuqi, LIU Kai, CHEN Kui, GAO Guoqiang   +5 more
doaj  

Study on the Failure Causes and Improvement Measures of Arresters in 10 kV Distribution Transformer Areas

Energies
In recent years, arresters in 10 kV distribution transformer areas of the Guangdong power grid have exhibited a rising trend of premature failures, posing a serious threat to distribution network reliability.
Taishan Hu, Yuanzhi Wu, Zhiming Liao, Gang Liu, Shangmao Hu, Yongxia Han, Lu Qu, Licheng Li   +7 more
doaj   +1 more source

A Heuristic Method for the Reduction of the Outage Rate of High-Voltage Substations Due to Atmospheric Overvoltages

Applied Sciences, 2018
The adequate protection against lightning surges and the limitation of the expected annual failure rate of high-voltage substations are critical issues, in an effort to secure the safety of the equipment and the personnel.
Christos A. Christodoulou, Vasiliki Vita, Dionysios Voglitsis, George Milushev, Lambros Ekonomou   +4 more
doaj   +1 more source

Damaging micromechanisms in an as cast ferritic and a ferritized ductile cast iron [PDF]

, 2017
Mechanical behavior and damaging micromechanisms in Ductile Cast Irons (DCIs) are strongly effected by matrix microstructure (e.g., phases volume fraction, grains size and grain distribution) and graphite nodules morphology peculiarities (e.g ...
D' Agostino, Laura, Di Cocco, Vittorio, Fernandino, Diego Omar, Lacoviello, Francesco   +3 more
core   +1 more source

Therapeutic strategies for MMAE‐resistant bladder cancer through DPP4 inhibition

Molecular Oncology, EarlyView.
We established monomethyl auristatin E (MMAE)‐resistant bladder cancer (BC) cell lines by exposure to progressively increasing concentrations of MMAE in vitro. RNA sequencing showed DPP4 expression was increased in MMAE‐resistant BC cells. Both si‐DPP4 and the DPP4 inhibitor sitagliptin suppressed the viability of MMAE‐resistant BC cells.
Gang Li, Shuichi Tatarano, Hirofumi Yoshino, Saeki Saito, Mitsuhiko Tominaga, Junya Arima, Ikumi Fukuda, Takashi Sakaguchi, Ryosuke Matsushita, Yasutoshi Yamada, Hideki Enokida   +10 more
wiley   +1 more source

An optimal online monitoring scheme for lightening arresters based on the three-phase imbalance of leakage current

Zhejiang dianli
The online monitoring data of lightning arresters are susceptible to environmental temperature， humidity， and surface contaminants. However， conventional alarm threshold setting approaches for leakage current may result in false alarms.
JIANG Nannan, WANG Wenhao, LIN Jiajun, WANG Shaohe, TAN Zhixiang   +4 more
doaj   +1 more source

Study on overvoltage characteristics and arrester configuration strategy for ±1 100 kV HVDC transmission lines

The Journal of Engineering, 2018
Overvoltage caused by faults or switching is one of the decisive factors affecting the insulation level of equipment in UHVDC transmission systems.
Xiaoguang Zhu, Yichen Liu, Junbo Deng, Fang Yu, Jiangtao Li, Jie Guo, Guanjun Zhang   +6 more
doaj   +1 more source

The Effects of Electrical Degradation on the Microstructure of Metal Oxide Varistor [PDF]

, 2001
In this paper, the findings from systematic experiments with the purpose to determine the degradation effect of single and multiple current pulses on the microstructure of the Metal Oxide (MO) varistor are described. Six distribution class varistors from
Mardira, K. P., Saha, Tapan K., Sutton, R. A.   +2 more
core