Results 31 to 40 of about 69,792 (265)
Design and development of a novel sliding friction and wear tester with complex working conditions
Scientific Reports, 2021 Serious wear phenomena occur in mining machinery under complex working conditions, and the wear of machine parts is primarily caused by the synergistic effect of adhesive wear, abrasive wear, corrosive wear, etc.
Jinrong Chai +4 more
doaj +1 more source
Microstructure and wear behavior of arc-shaped 40CrNiMo steel after laser hardening
Journal of Materials Research and Technology, 2023 This study focuses on arc-shaped 40CrNiMo steel; the microstructure characteristics and formation mechanism of the hardened layer at different positions were investigated after laser hardening.
Jia Li +3 more
doaj +1 more source
Dynamics Analysis of Spatial Parallel Mechanism with Irregular Spherical Joint Clearance
Shock and Vibration, 2019 Clearances caused by machining accuracy and assembly requirements are regular, but they will be irregular due to the wear of the kinematic pairs. At present, there are few studies on wear of space kinematic pairs.
Xiulong Chen, Yuewen Li
doaj +1 more source
Effect of Load and Frequency on the Wear Performance of 42CrMo4 and 38MnVS6 Steels [PDF]
Cailiao BaohuIn order to investigate the wear performance of 42CrMo4 and 38MnVS6—two alloy steels used as piston materials， reciprocating dry friction tests on two types of alloy steel materials were conducted under different loads and frequencies， using GCr15 steel ...
JIANG Liyuan, XU Jidong, DING Cong, GONG Chuansheng, XIONG Peiyou, ZHANG Jian, PIAO Zhongyu
doaj +1 more source
On dry sliding wear of ECAPed Al-Mg-Zn alloy: Wear rate and coefficient of friction relationship
Alexandria Engineering Journal, 2021 Equal channel angular pressing (ECAP) of AA7075 alloy, at room temperature, with six numbers of passes, has been successfully processed. Microstructure observations, microhardness experiment, wear test, and worn surface morphology examination were ...
Maged Elhefnawey +5 more
doaj +1 more source
Advances in Materials Science and Engineering, 2021 Cyclic cryogenic treatment, a major cycle accompanied by zero or more subsidiary cycles, was conducted on the hardened 42CrMo steel using orthogonal design method to investigate the effect of different parameters (cryogenic temperature, holding time, and
Haidong Zhang +3 more
doaj +1 more source
Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function
FEBS Open Bio, EarlyView.We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke +4 more
wiley +1 more source
Developing a work roll model by analyzing the mechanism influence through analytic calculation
International Journal of Applied Mechanics and Engineering, 2023 This paper presents a novel approach to developing a work roll prediction model that takes into account both the mechanism and condition influences on work roll wear.
Hussein Mohammed Ali Al Mohammed
doaj +1 more source
New Directions for Adult and Continuing Education, EarlyView.ABSTRACT Mental well‐being is central to adult learner success, yet many adult education institutions lack capacity to provide timely and accessible support. This article examines how artificial intelligence (AI) can strengthen mental health–adjacent supports in adult and continuing higher education, with attention to professional practice and ...
Adam L. McClain, Thomas Wade
wiley +1 more source
The Role of Calcitonin Gene‐Related Peptide in High‐Altitude Headache: A Prospective Field Study
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective High‐altitude headache (HAH) is a common neurological condition associated with rapid ascent to high altitude. The pathophysiological mechanisms underlying HAH remain incompletely understood. Calcitonin gene‐related peptide (CGRP), a neuropeptide implicated in migraine pathophysiology, may play a key role in the pathophysiology of ...
Roman Schniepp +4 more
wiley +1 more source