Results 21 to 30 of about 68,450 (269)

Highly conductive polymer nanocomposites for emerging high voltage power cable shields: experiment, simulation and applications

open access: yesHigh Voltage, 2020
High voltage power cables play a critical role in global electricity transmission and distribution. The currently used power cables cannot fulfil the green and sustainable requirement of modern society because of the thermoset nature of cable insulation ...
Xingyi Huang   +6 more
doaj   +1 more source

Impact Sound Insulation of Thermally Insulated Balconies

open access: yesINTER-NOISE and NOISE-CON Congress and Conference Proceedings, 2022
AbstractWith the increasing urban densification, balconies are gaining in popularity as they improve the living quality in homes. From a technical point of view, the thermal insulation between balconies and the building’s façade is state of the art. In Germany, the most popular balcony construction is a reinforced concrete balcony, separated from the ...
L HEIDEMANN, J SCHECK, B ZEITLER
openaire   +1 more source

Partial discharge measurement and analysis under lightning impulse superimposed DC voltage in SF6 gas

open access: yesHigh Voltage, 2022
The presence of lightning impulses (LIs) on the DC waveform can seriously influence the insulation performance of a GIL system. The waveshape can be a superposition of the DC and impulse waveform. In this study, the behaviour of partial discharge (PD) on
Haotian Wang   +5 more
doaj   +1 more source

Superconductor–insulator transitions and insulators with localized pairs [PDF]

open access: yesPhysics-Uspekhi, 1998
Two experiments are described which are related to the problem of localized Cooper pairs. Magnetic-field-tuned superconductor-insulator transition was studied in amorphous In--O films with onset of the superconducting transition in zero field near 2 K. Experiments performed in the temperature range T>0.3 K indicate that at the critical field, B=B_c,
openaire   +2 more sources

A direct bonding copper degradation monitoring method for insulated gate bipolar transistor modules: Boundary‐dependent thermal network combined with feedback control

open access: yesHigh Voltage, 2023
The direct bonding copper (DBC) substrates of insulated gate bipolar transistor (IGBT) modules degrade inevitably under cycling thermo‐mechanical stress, causing potential threat to the reliability of IGBT modules. However, little attention has been paid
Xiaotong Zhang   +4 more
doaj   +1 more source

A thermal network model considering thermal coupling effect and TIM degradation in IGBT modules

open access: yesEnergy Reports, 2023
Thermal interface materials (TIMs), as important materials for heat dissipation of insulated gate bipolar transistor (IGBT) modules, degrade under long-term thermal cycling, resulting in elevated junction temperatures and threatening the safe operation ...
Xiaotong Zhang   +5 more
doaj   +1 more source

Analysis of the Influence of Arc Contact Ablation and Arcing Time on the Gas Flow Characteristics of SF6 Circuit Breakers

open access: yesInternational Transactions on Electrical Energy Systems
High-current interruptions aggravate arc contact ablation, and arcing time strongly influences the gas-blast capability of self-energy SF6 circuit breakers.
Xue Zhang   +5 more
doaj   +1 more source

Spatial and Volumetric Characteristics of Glioblastoma: Associations With Clinical Presentation and Survival

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective We aim to comprehensively analyze how regional tumor and edema characteristics are associated with clinical presentations and survival outcomes in a large cohort of glioblastoma patients. Methods Patients with IDH‐wildtype glioblastoma who received brain MRI from 2010 to 2023 were included.
Daniel J. Zhou   +16 more
wiley   +1 more source

Detection of decomposition products of SF6/air gas mixture by electron attachment mass spectrometry

open access: yesHigh Voltage, 2022
Sulphur hexafluoride (SF6) is widely used in gas insulation, and its decomposition products can be used to diagnose potential insulation failures.
Huan Yuan   +5 more
doaj   +1 more source

Quantitative MRI Uncovers Subtle Cortical Damage in Myelin Oligodendrocyte Glycoprotein Antibody‐Associated Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To determine whether myelin‐sensitive quantitative MRI reveals microstructural abnormalities in normal‐appearing cortex (NACtx) in myelin oligodendrocyte glycoprotein antibody–associated disease (MOGAD), indicating that conventional MRI underestimates remission residual cortical injury.
Valentina Camera   +20 more
wiley   +1 more source

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