Results 51 to 60 of about 583,507 (329)

Dynamics of surface charge and electric field distributions on basin-type insulator in GIS/GIL due to voltage polarity reversal

High Voltage, 2020
In this study, a simulation model of surface charge accumulation has been established. The model considers three accumulation ways, i.e. electrical conduction within the gas, through insulator volume and along the insulator surface.
Yi Luo, Ju Tang, Ju Tang, Cheng Pan, Zijun Pan, Yi Li, Zhaolun Cui, Zhaolun Cui   +7 more
doaj   +1 more source

Improved method in calculating the surface charge distribution of DC‐GIL insulators with 3D geometry models

IET Science, Measurement & Technology, 2022
Surface charge accumulation is an important issue when dealing with the insulation property of direct‐current gas‐insulated transmission lines with insulators.
Xiaolong Li, Guangkuo Zhang, Junran Jia, Chen Cao, Xin Lin   +4 more
doaj   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

FEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Correlated development of a (2 x 2) reconstruction and a charge accumulation layer on the InAs(111)-Bi surface

, 2011
We have studied the formation of a Bi-induced (2 x 2) reconstruction on the InAs(111)B surface. In connection to the development of the (2 x 2) reconstruction, a two dimensional charge accumulation layer located at the bottom of the InAs conduction band ...
Mats Göthelid, Karlsson, Ulf O., Szamota-Leandersson, Karolina, Leandersson, Mats,, Szamota-Leandersson, Karolina,, Karolina Szamota-Leandersson, Ulf O. Karlsson, Göthelid, Mats,, Karlsson, Ulf O.,, Mats Leandersson, Gothelid, Mats, Lund University., Leandersson, Mats   +12 more
core   +1 more source

Impact of gamma‐irradiation on space charge and charge trap characteristics of Al/epoxy nanocomposites

SPE Polymers, 2021
Epoxy nano Al composites were prepared using epoxyresin, hardener, and Al nanoparticles with required proportions and irradiated with gamma rays of required dosage.
Naresh Chillu, Ramanujam Sarathi, Rengaswamy Jayaganthan   +2 more
doaj   +1 more source

Electron transfer between complexes III and IV in S. cerevisiae mitochondrial membranes

FEBS Letters, EarlyView.
Mitochondrial oxidative phosphorylation in S. cerevisiae mitoplasts is limited by complex IV catalytic capacity, rather than two‐dimensional cytochrome c diffusion. At physiological cytochrome c : supercomplex ratios at salinity equivalent to that of 20 mm monovalent salt, activity is maximized, indicating that this low ionic strength accurately mimics
Ana Paula Lobez, Mikael Oliveberg, Peter Brzezinski   +2 more
wiley   +1 more source

Thermal Aging-Induced Evolution of Surface Charge Dynamics in Al₂O₃-Doped Epoxy Resin Insulators for GIS/GIL

Energies
Thermal stress is an important factor affecting the long-term performance of solid insulation in GIS/GIL, and the physicochemical properties of insulating materials play a crucial role in governing surface charge dynamics.
Dongwei Sun, Nian Tang, Zehong Chen, Feng Wang, Kaibin Liang, Lipeng Zhong, Heng Yi, Zhi Li   +7 more
doaj   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

FEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee, Junho Jeong, Chae Yeong Lee, Hyunjoon Cho, Man Hwan Oh, Je Chul Lee, Jee‐Young Lee, Yangmee Kim   +7 more
wiley   +1 more source

Temperature effect on space charge dynamics in XLPE insulation

, 2007
This paper reports on space charge evolution in crosslinked polyethylene (XLPE) planar samples approximately 1.20 mm thick subjected to electric stress level of 30 kVdc/mm under four temperature 25 oC, 50 oC, 70 oC and 90 oC for 24 hours.
Y.l. Chong, Y. L. Chong, Chong, Y L, G. Chen, Y. F. F. Ho, Chen, G, Ho, Y F F, Y.f.f. Ho   +7 more
core   +1 more source

A simple method considering the synergetic effect of space charge and inhomogeneous material conductivity for DC electric field computation

High Voltage, 2022
The current continuity equation is usually applied to solve DC electric field distribution when there is inhomogeneous material conductivity due to temperature gradient or multi‐layer dielectrics.
Xiao Yang, Yi Zhang, Zhuodong Yang, Hao Dong, Chengrong Li, Bo Qi, Licheng Lu   +6 more
doaj   +1 more source