In the early 1940's, Garner, Nissan and Wood (1) 1 ) and Weissenberg (2) made the first attempts to measure normal stress 2 ) in viscoelastic fluids undergoing shear. Fifteen years later, by the late 50's, a considerable body of data on various fluids and techniques had been generated...
These are three normal stress components (σx, σy, σz) and three shear stress components (τxy, τyz,τzx). 1.1.3 Stresses in an inclined plane The principal stresses in two dimensions are very useful because many engineering problems of practical interest are effectively two-dimensional, ...
Social support from family and friends included contacts with family members and friends (who do you chat with the most; if you have something on your mind or an idea, who do you talk to first; who do you ask first for help when you have problems or difficulties), sick care (whether ...
Factors causing poorer quality of life include medically assisted reproduction, complications before or during pregnancy, obesity, nausea and vomiting, epigastric pain, back pain, smoking in the months before conception, alcohol dependence, sleep difficulties, stress, anxiety, depression during pregnancy, ...
There is increasing evidence that children with disruptive behavior problems, and particularly those who show persistent antisocial behavior, are characterized by neurobiological deficits (Raine, 2002). In this respect, stress regulating mechanisms, for example, the HPA axis, have drawn much attention (...
A number of recent studies suggest that gentle massage can improve an infant's sleep and decrease stress. It also is a great way to bond with an infant. Try not to massage too vigorously after feeding, since it might cause the baby to spit up. ...
46 The large sample size enabled evaluation of smaller weight categories, including 3 categories for low, medium, and high normal weight, with high precision and allowed us to estimate 2-way interactions between baseline weight and weight over time. This approach allowed us to estimate the ...
Methods. A sample of 66 normal sleepers completed daily sleep and stress logs for two weeks. Trait hostility was measured retrospectively. Results. The cognitive dimension of trait hostility was significantly correlated with subjectively rated sleep quality indicators, and these relationships were ...
Physical stress Injuries Seizures Normal Prolactin Levels The normal range for prolactin in your blood is: Male/assigned male at birth: less than 20 nanograms per milliliter (ng/mL) Non-pregnant female/assigned female at birth: less than 25 ng/mL ...
Equation (8.14) is referred to as the Cauchy stress formula. The components αij with i = j give the respective force component along the positive xj-axis acting through the area element having its normal along the same direction. They are referred to as normal stresses. The components σij...