Results 261 to 270 of about 1,360,531 (316)
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Liquefied strength ratio with stress densification and low stresses
Canadian Geotechnical Journal, 2021This paper presents a comparison of four assumptions or approaches for using a liquefied shear strength ratio for sandy soils in cases where there has been a large increase in effective vertical stress, e.g., structure raising or remedial measure, that is outside the effective stresses of the case histories used to develop the empirical liquefied ...
Stark, Timothy D +1 more
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Population stress and the Swedish sex ratio
Paediatric and Perinatal Epidemiology, 2005SummaryWell‐developed theory implies that the human secondary sex ratio moves inversely over time with the level of anxiety and depression in the population. Few tests of this hypothesis, however, appear in the voluminous literature concerned with the sex ratio. These tests, moreover, employ designs that allow only weak inference.
Ralph, Catalano +3 more
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Problems in the Ratio Measurement of Life Stress
Journal of Health and Social Behavior, 1976The development and use of Holmes and Rahe's Social Readjustment Rating Scale is examined. The scale is regarded as a laudable attempt at ratio measurement and as deserving more attention and emulation in sociology than it has received. However, there are problems with the work of Rahe and his associates.
R L, Hough, D T, Fairbank, A M, Garcia
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Influence of stress ratio and material properties on effective stress range ratio and crack growth
Engineering Fracture Mechanics, 1989Abstract The influence of stress ratio R and yield strength σ y on crack closure and fatigue crack growth were studied. Crack closure and crack growth experiments were performed on 6063-T6 and 6061-T6 Al-alloys of 0%, 2%, 3% and 6% prestrains. Crack closure stresses were measured using a side edge measurement technique with a clip on
Raghuvir Kumar, S.B.L. Garg
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Pressure transmission ratio reproducibility in stress continent and stress incontinent women
Neurourology and Urodynamics, 1997Our objective was to determine the effect of cough strength on pressure transmission ratios and establish quantitative and qualitative intra-observer test-retest reproducibility of pressure transmission ratios calculated from dynamic urethral pressure profilometry.
G W, Cundiff +3 more
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Convergence of Stress-Ratio Method
Journal of the Engineering Mechanics Division, 1981The stress-ratio equations can be derived from fully-loaded conditions. The technique is therefore always a first order iterative method and under certain conditions, second order. All intermediate designs are within the iterations subspace which constitutes a small part of the design space.
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SBP ratio in exercise stress testing
Journal of Cardiovascular Medicine, 2013The 3-min SBP ratio (SBPR) was proposed to detect significant coronary artery disease (CAD), but its relationship with abnormalities detected by myocardial perfusion-gated single-photon emission computed tomography (SPECT) was never examined.In 156 consecutive patients submitted to resting and exercise gated SPECT for suspect CAD, perfusion scores ...
Bartolini M +5 more
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Effect of stress ratio on effective stress range ratio and crack growth in 6061-T6 Al-alloy
International Journal of Pressure Vessels and Piping, 1988Abstract Crack closure experiments using a COD gauge were performed on 6061-T6 Al-alloy, for various stress ratios. Experimental results show that for a given stress ratio, R , the crack length increases up to 1 mm after which it is stabilized. On the basis of the experimental results a model for effective stress range ratio U , which was ...
Raghuvir Kumar, S.B.L. Garg
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The Q-t rAtio in Treadmill Stress Testing
Angiology, 1971An evaluation of the Q-T ratio as a means of differentiating normal from abnormal tread mill stress test results was attempted. Digitalized subjects were included in the study to determine if false-positive treadmill stress test results could be identified by this means.
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