Based on the existing acknowledgment that space charge modulates AC and DC breakdown of insulating materials, this investigation promotes the related investigation into the situations of more complex electrical stress, i.e., AC-DC combined voltages.Experimentally, the AC-DC breakdown characteristics of oil impregnated paper insulation were systemat
Shoaling due to sedimentation process leads to the problem of port operation, where ships have a problem to navigate inside the port.The problem of the operation can lead to the reduction of the profit margin for the port.This paper discusses the engineering solution to solve the sedimentation problem because of the estuary inflow.In order to analy
Abstract Tribological behaviors of laser textured surface with elliptical dimples were experimentally compared with that of the smooth one under different lubrication conditions, including the poor-oil, rich-oil and dry STAINLESS STEEL STRAW BLACK BENT lubrication.The lubrication regime was analyzed with the increasing operating load by ring-on-rin
Objective: To examine the effects of coronavirus disease-2019 (COVID-19) exposure, expressive suppression/cognitive reappraisal, and demographic variables on post-traumatic stress symptoms (PTS) among Chinese.Methods: Participants were recruited by social media through WeChat and 6 049 Chinese (aged from 17 to 63 years; median=24) from 31 provinces