نتایج جستجو برای: fatigue of materials

تعداد نتایج: 21197044  

Journal: :Proceedings of the Institution of Civil Engineers 1966

2014
L. L. Li P. Zhang Z. J. Zhang Z. F. Zhang

Incoherent twin boundaries (ITBs) are widespread and play a crucial role in unidirectional deformation behavior of materials, however, the intrinsic role of individual ITB under cyclic loading remains elusive. Here we show the fatigue cracking behavior of Cu bicrystal with an ITB as its sole interface for the first time. The slip bands (SBs) could transfer through the ITB; meanwhile, the ITB co...

ژورنال: ارگونومی 2014

Introduction: Working with Visual Display Terminals (VDTs) can be associated with visual complaints particularly visual fatigue and symptoms including headache, disruption in continuing the work and ocular disorders. The objective of the present study was to determine the prevalence of visual fatigue and its related risk factors in computer users of Kermanshah University of Medical Sciences in ...

Journal: :journal of research in medical sciences 0
fereshteh ashtari department of neurology, school of medicine, isfahan neuroscience research centre, isfahan university of medical sciences, isfahan, iran masoomeh ajalli department of neurology, school of medicine, isfahan neuroscience research centre, isfahan university of medical sciences, isfahan, iran vahid shaygannejad department of neurology, school of medicine, isfahan neuroscience research centre, isfahan university of medical sciences, isfahan, iran mojtaba akbari school of medicine, isfahan neuroscience research centre, isfahan university of medical sciences, isfahan, iran silva hovsepian child health promotion research center, endocrine and metabolism research center, isfahan university of medical sciences, isfahan, iran

normal 0 false false false en-us x-none ar-sa background: the relation between vitamin d deficiency with depressive and fatigue symptoms in both multiple sclerosis (ms) patients and healthy population have been reported. to represent our regional achievement in this field we investigated the relation between vitamin d status with fatigue and depressive symptoms in ms patients. materials and met...

Journal: :The Proceedings of Mechanical Engineering Congress, Japan 2020

Journal: :Transactions of the Japan Society of Mechanical Engineers 1974

2004
R. O. RITCHIE

The behavior of small-volume (so-called ‘nano’) structures, where size-scales are comparable with microstructural dimensions, and biological/bio-implantable materials, which invariably display a hierarchy of structural dimensions, is currently much in vogue in materials science. One aspect of this field, which to date has received only limited attention, is the fracture and fatigue properties o...

M Roozitalab, M Vossoughi, M Zoladl, N Hosseini,

Aims: One of the side effects of chemotherapy is fatigue. This study was carried out with the aim of determining the effect of intervention based on 5A self-management model on the fatigue severity of patients with cancer under chemotherapy. Materials and Methods: In this randomized clinical trial conducted in 2016, 48 patients with cancer under chemotherapy, who were referred to Chemotherapy ...

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