one of the most effective ways to deal with drought stress and increase water use efficiency is the development of drought-tolerant varieties which display less reduction in yield per unit water reduction. therefore, the breeding of diploid pollinators was considered as an essential measure for producing drought-tolerant hybrids. in this study, from 4 diploid pollinator populations, 45 half-sib...

Based on the existing research results, a theoretical fracture model of strata under compound impact static and harmonic dynamic load is improved, characteristic parameters (stress intensity factor, T-stress, initiation angle) two far-field stress are determined according to crack dip angle. Additionally, effects distribution field (the angle, degree, number units, area) further calculated disc...

Results Participants were representative of the SICU staff with 69% nurses, 88% females, age average of 44, and 11.8 (±10.1, SD) average years working in the SICU. Participant biological indices of stress, measured by the level of salivary a-amylase, was significantly reduced in the intervention group (t=2.562, p=0.026) only. Behaviorally, they rated their experience of stress using the Depress...

research has shown that shift work, in particular night work, can have negative effects on the health, safety and well-being of workers. our study assessed, in a hospital setting, the effects of bright light (bl) on general health and psychological problems during night shift work. in an experimental design, 15 female nurses at a general hospital that located in tehran were exposed to moderate ...

Upregulation of the Kir2.1 channel during endoplasmic reticulum (ER) stress in t-BBEC117, an immortalized bovine brain endothelial cell line, caused a sustained increase in intracellular Ca(2+) concentration ([Ca(2+)]i) and a facilitation of cell death. Expressions of Ca(2+) influx channels (TRPC, Orai1, STIM1) were unchanged by ER stress. The ER stress-induced [Ca(2+)]i increase was mainly att...

BACKGROUND Maintenance of ovarian homeostasis requires precise regulation of proliferation of thecal- interstitial (T-I) cells. Recent evidence indicates that oxidative stress and antioxidants modulate proliferation of various tissues under both physiological and pathological conditions. This study evaluated the effects of oxidative stress and antioxidants on T-I proliferation. METHODS Rat T-...

Abstract This paper deals with the singular stress field at the adhesive dissimilar joint, and discusses the effect of material combination and adhesive thickness on the intensity of the singular stress when bonded strip is subjected to tension. A useful method to calculate the intensity of singular stress at the adhesive dissimilar joint is presented with focusing on the stresses at the edge c...

In this paper, we investigate the effects of the non-singular stress (T stress) on the mode I near-tip fields lbr elastic perfectly plastic pressure-sensitive materials under plane-stress and small-scale yielding conditions. The T stress is the normal stress parallel to the crack faces. The yield criterion for pressure-sensitive materials is described by a linear combination of the effective st...