introduction: job stress is one of the main characteristics of modern life which is increasing and has been recognized as an important risk factor of cardiovascular diseases. the present study was conducted to determine the association between job stress at work environment and cardiovascular diseases. materials and methods: a number of 300 persons including 150 cases and 150 controls were cons...

objective(s): due to the prevalence and pervasiveness of stress in modern life and exposure to both chronic and acute stresses, it is not clear whether prior exposure to chronic stress can influence the impairing effects of acute stress on memory retrieval. this issue was tested in this study. materials and methods: adult male wistar rats were randomly assigned to the following groups: control,...

using piezoelectric patches the stress concentration around a hole on a plate under tension is reduced and controlled. to attain the reduction in stress two placements for piezoelectric patches is investigated. the first location is top/bottom of the hole with compression induced strain and the second is left/right of the hole with tension induced strains to control the stress flow. the result ...

background and objectives: studies of the relationship between personal qualities and job consequences usually find poor and inconsistent correlations. it is suggested that the reason may lie in ignorance of some modifying factors mediating such relationship. the perceived control has attracted much attention as a candidate factor. this study aimed to examine the mediating role of the perceived...

mental stress and daily crises comprise a part of physical and mental threats. perceived stress is a physical and mental threat, as well. perceived stress is a psychological process during which the individual considers his/ her physical and psychological welfare as being threatened. since idiopathic thrombocytopenic purpura (itp) is one of the chronic diseases being able to affect patients' pe...

drought is one of the most important factors limiting growth and yield in many parts of the world. in order to evaluate the effects of drought stress on some morphological and physiological traits of two cultivars of bean, two red beans (derakhshan and goli) in four drought treatments including 25%, 50%, 75%, control 100% field capacity were studied in a factorial experiment based on complete r...