Results 31 to 40 of about 2,623,768 (284)
MetalsConsidering the greater contact stress of turnout rails during wear and the development of heavy-haul railways, twin-disc sliding–rolling wear tests were performed on U75VH heat-treated rail steels applied for turnouts under high contact stress ranging ...
Ruimin Wang +5 more
doaj +1 more source
Analysis of the Influence of Contact Stress on the Fatigue of AD180 High-Carbon Semi-Steel Roll
MetalsIn this study, to investigate the problem of contact fatigue and the damage mechanism of an AD180 high-carbon semi-steel roll, rolling contact fatigue tests were conducted using specimens cut from the periphery of a roll ring.
Yaxing Liu +5 more
doaj +1 more source
Energies, 2020 Electrochemical-mechanical modelling is a key issue to estimate the damage of active material, as direct measurements cannot be performed due to the particles nanoscale.
Davide Clerici +2 more
doaj +1 more source
A thin rivulet or ridge subject to a uniform transverse\ud shear stress at its free surface due to an external airflow [PDF]
, 2012 We use the lubrication approximation to analyse three closely related problems involving a thin rivulet or ridge (i.e. a two-dimensional droplet) of fluid subject to a prescribed uniform transverse shear stress at its free surface due to an external ...
Duffy, B. R. +3 more
core
Experimental characterization of wheel-rail contact patch evolution [PDF]
, 2006 The contact area and pressure distribution in a wheel/rail contact is essential information required in any fatigue or wear calculations to determine design life, re-grinding, and maintenance schedules. As wheel or rail wear or surface damage takes place
Björklund, S. +4 more
core +1 more source
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background The delipid extracorporeal lipoprotein filter from plasma (DELP) treatment can effectively reduce blood lipid, increase blood flow, and improve neurological deficits in patients with acute ischemic stroke (AIS). However, its effect on vision and retinal microcirculation in stroke patients has never been reported.
Ning Li +9 more
wiley +1 more source
Research on Forced Friction and Wear of Guide Joint of Downhole Closed-Loop Controlled Bend Sub
Shiyou jixie, 2021 To study the influence of the contact stress, friction and wear of the steel ball in the raceway during the working process of the guide joint, according to the Hertz contact theory, MATLAB software is used to calculate the contact stress between the ...
Zhang Guangwei +3 more
doaj
Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source
A thin rivulet or ridge subject to a uniform transverse shear stress at its free surface due to an external airflow [PDF]
, 2012 We use the lubrication approximation to analyse three closely related problems involving a thin rivulet or ridge (i.e. a two-dimensional droplet) of fluid subject to a prescribed uniform transverse shear stress at its free surface due to an external ...
Duffy, B. R. +3 more
core +1 more source
Mapping the evolution of mitochondrial complex I through structural variation
FEBS Letters, EarlyView.Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin +2 more
wiley +1 more source