Results 251 to 260 of about 3,073,145 (301)

Convergence of Stress-Ratio Method

Journal of the Engineering Mechanics Division, 1981
The 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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Pressure transmission ratio reproducibility in stress continent and stress incontinent women

Neurourology and Urodynamics, 1997
Our 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, R L, Harris, J P, Theofrastous, R C, Bump   +3 more
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SBP ratio in exercise stress testing

Journal of Cardiovascular Medicine, 2013
The 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, Massi L, Settimo L, Mema A, PUPI, ALBERTO, SCIAGRA', ROBERTO   +5 more
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The positivity ratio and functioning under stress

Stress and Health, 2010
AbstractThe positivity ratio reflects the ratio of positive affect to negative affect. In two studies, the authors investigated the relationship between positivity ratio and functioning under stress. Study 1 examined gastric cancer patients (N = 123) and Study 2 explored hospital personnel exposed to missile attacks (N = 84). In both studies, there was
Amit Shrira, Yuval Palgi, Jonathan Jacob Wolf, Yeela Haber, Orit Goldray, Einat Shacham‐Shmueli, Menachem Ben‐Ezra   +6 more
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The Q-t rAtio in Treadmill Stress Testing

Angiology, 1971
An 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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Privation, stress, and human sex ratio at birth

Early Human Development, 2015
This article reviews the growing interdisciplinary literature on the effect of privation and stress on human sex ratio at birth. Borrowing strength from the potential outcomes causal analysis framework, the discussion focuses on the issues of study design and identification strategy and how they have influenced the current state of the field.
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The effect of Poisson's ratio on stress concentrations

The Journal of Strain Analysis for Engineering Design, 2007
In design, it is common to use values for stress concentration factors (SCFs) obtained from textbooks. These textbook values have generally been obtained from photoelastic experiments for which Poisson's ratio will probably have a value greater than 0.3 and for frozen stress analysis a value approaching 0.5.
R J Grant, M Lorenzo, J Smart
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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, 1988
Abstract 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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Significance of the taurine-glycine ratio as an indicator of stress

Bulletin of Environmental Contamination and Toxicology, 1987
For the quantification of stress effects, several methods and systems have been developed. Among others, biochemical techniques seem to be very promising. The following paper deals with the applicability of the taurine-glycine ratio as a biochemical stress index.
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Probabilistic Horizontal Stress Ratios in Rock

Mathematical Geology, 2002
Prior to excavation, any point in a rock mass is subjected to stress, which has to be considered in the overall stress distribution after the excavation work is completed. Over the past three decades, empirical, analytical, and field studies have shown that the ratio of average horizontal stress to vertical stress plays a dominant role in engineering ...
Zekai Şen, Bahaaeldin H. Sadagah
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