introduction: stress has many effects on the development of systems and organs in the fetal period, and these effects appear after birth. since hemopoietic system is susceptible to stress, effects of restraint stress were studied in offspring of pregnant rats. methods: pregnant rats were divided into one control and three stress groups. the control group did not receive any stress during the ge...

differences between stress-based and strain-based criteria are investigated in seismic performance evaluation of the arch dams in time domain. a numerical model of the coupled dam-reservoir-foundation system is prepared with the finite element technique. reservoir is modeled using the eulerian approach as a compressible domain, and the foundation rock is assumed to be massless. dynamic equilibr...

A solution is presented to a doubly mixed boundary value problem of the torsion of an elastic layer, partially resting on a rigid circular base by a circular rigid punch attached to its surface. This problem is reduced to a system of dual integral equations using the Boussinesq stress functions and the Hankel integral transforms. With the help of the Gegenbauer expansion formula of the Bessel f...

abstract background: the use of coping strategies in reducing the adverse effects of stress can be helpful. nero‑linguistic programming (nlp) is one of the modern methods of psychotherapy. this study aimed to determine the effect of nlp on occupational stress in nurses working in critical care units of urmia. materials and methods: this study was carried out quasi‑experimentally (before–after) ...

the naturally occurring antioxidants: vitamin e, β-carotene and vitamin c are known to ameliorate theoxidative stress generated during various physiological and pathological conditions. the oxidative stress mayoccur at different sites, different times, and by different mechanisms in the animal system. lower levels ofthe anti-oxidant vitamins are associated with poor fertility and production lev...

in this paper, the main factors in the analysis of the railway concrete sleepers areinvestigated and new recommendations are made in order to improve the accuracy of the currentpractices in analysis of the railway track system. first, a comprehensive literature survey isconducted, then, fem models for a railway track system are developed and used to discuss andevaluate the assumptions commonly ...

background & aim: occupational exposures can cause problems such as reproductive system disorders; however, the effects of some exposures, such as psychological stress, have not been investigated yet. this study aims to investigate the effects of women’s psychological stress on obstetric disorders. methods:this historical cohort study was conducted on 1400 working women in mashhad, iran. data c...