Results 271 to 280 of about 569,561 (310)
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Spinal stress—an approach to quantification with respect to back pain
Clinical Biomechanics, 1987Back pain is a major problem throughout the industrialized world, and although its aetiology is ill understood, the problem demands immediate attention. This paper briefly describes the investigative strategy used in studies of back pain by the Ergonomics Research Unit at the University of Surrey.
D A, Stubbs, D, Baty, J, Reardon
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Stressing life events and the experience of low back pain
Journal of Psychosomatic Research, 1979Abstract Life-stress events, attributes of low back pain, anxiety, hostility and depression were measured in 148 patients hospitalized for evaluation and treatment of low back pain. Fifty-seven of these patients had definite organic disease, 51 had probable organic disease, and 40 had no demonstrable organic disease.
F, Leavitt +2 more
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Causal Relation of Psychical Stress to Acute Back Pain
Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca, 2018PURPOSE OF THE STUDY There s a known relation between the chronical back-pain-syndrome and psychical problems. We suppose a direct causality between acute stress and onset of the backpain syndrome. MATERIAL AND METHODS A prospective cohort-study (IV/2014 - VIII/2014) of patients who came to our emergency department with acute backpain-syndrome, with no
L, Hajnovic, S, Knöller, L, Schütz
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Attributions, Stress, and Work-Related Low Back Pain
Applied Occupational and Environmental Hygiene, 2002Occupational low back pain (LBP) is a major cause of morbidity and cost. Efforts to control LBP are largely unsuccessful, and better understanding of risks is needed, especially psychological factors. The purpose of this research was to assess the association between worker attributions and LBP.
George, Byrns +2 more
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The back stress in high temperature deformation
Acta Metallurgica, 1969Abstract The applicability of the following strain rate equation to high temperature deformation is examined. e=|gf s exp ( −ΔH 0 KT ) exp ( vτ − τB] KT ) Here e is the tensile or compressive strain rate; φs is a structure factor; ΔH0 is the activation enthalpy in the absence of effective stress; v is the activation ...
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Friction stress and back stress in cyclically deformed Ni3Ge single crystals
Materials Science and Engineering, 1988Abstract Stress-strain hysteresis loops obtained from cyclic deformation of Ni3Ge single crystals under strain control were analyzed. The major component of the cyclic flow stress was found to be the friction stress. The back stress was responsible for, at most, several per cent of the cyclic flow stress.
H-R. Pak, J. Chu, M. Kato, D. P. Pope
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Examination of Stresses in Sleeve Bearing Backs
SAE Technical Paper Series, 1981<div class="htmlview paragraph">The foundation of any multi-layered sleeve bearing is its backing. Traditional analytical methods cannot account for the variation in design, manufacturing techniques, or assembly practices--all of which have a decided affect on bearing performance.
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Constitutive Equations for the Back Stress in Amorphous Glassy Polymers
Mathematics and Mechanics of Solids, 2005Constitutive equations for the back stress in amorphous glassy polymers based on extended forms of the non-Gaussian James—Guth 3-chain and Arruda—Boyce 8-chain models of rubber elasticity are derived from the extended Wu and van der Giessen non-Gaussian full-network model.
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Back-stress influence on minimum stress calculations in hydraulic fracturing experiments
Environmental GeotechnicsThe analysis of fluid injection pressure variation during hydraulic fracturing is widely used for tectonic stress estimation. However, the models used for that are based on several simplifying assumptions. In this article, based on the results of laboratory experiments, we show that it is necessary to consider some additional parameters for a more ...
Mariia Trimonova +5 more
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