نتایج جستجو برای: stress concentration factor
تعداد نتایج: 1568110 فیلتر نتایج به سال:
Under drought stress condition, the signaling system induces expression of certain genes to counteract the deleterious effects of environmental stress. Among the essential micronutrients for plant growth and development, zinc has an important role in many plant metabolic processes including gene expression and stress tolerance. In order to investigate the effect of drought stress and ZnO on r...
the problem of several finite moving cracks in a functionally graded material is solved by dislocation technique under the condition of anti-plane deformation. by using the fourier transform the stress fields are obtained for a functionallygraded strip containing a screw dislocation. the stress components reveal the familiar cauchy singularity at thelocation of dislocation. the solution is empl...
oxidative stress has been implicated as a prominent determinant in the development of several diseases such as atherosclerosis. anti atherosclerotic effects of l-serine have been shown previously but its responsible mechanisms remained unidentified .this study aimed to investigate the antioxidant and cytoprotecrtive effects of l-serine and its possible mechanisms. for this purpose ,cell viabili...
Background: Social stress is a factor involved in the etiology of many diseases. Also, gender is another factor which predisposes individuals to certain disease. Results from animal and human studies suggest that socially-stressed men are more vulnerable to catching diseases compared to socially-stressed women. Materials and Methods: The role of chronic social stress and gender were examined in...
Effects of Glycerol and Salicylic Acid on Freezing Tolerance of Iranian Petunia (Petunia hybrida L.)
The aim of this study was to investigate the effects of glycerol (GL) and salicylic acid (SA) on freezing tolerance of Iranian Petunia (Petunia hybrida). For this purpose, a factorial experiment based on completely randomized design with three replications was conducted under controlled conditions. The first factor was temperature (0 and -4 °C) and the second factor was spraying with anti-stres...
To explore sex differences in cardiovascular function under stress, we analyzed plasma levels of glucose, C-reactive protein (CRP), uric acid and cholesterol in male, female and ovariectomized rats under acute and chronic stress. Glucose tolerance test (GTT) was performed in all rats before any stress was performed, as well as later in the chronic stress experiment. GTT in control animals showe...
abstract salinity is one of the major abiotic challenges influencing plant productivity worldwide. to examine the response of two alfalfa cultivars (bami and hamedani) to six levels of water salinity (0, 25, 50, 75, 100, 125 mm l-1 nacl), a glasshouse experiment was conducted at the college of agriculture, shiraz university, shiraz, iran in 2008. the results showed that in bami (which appeared...
In order to investigate the effect of silicon concentration in substrtae on some physiological, biochemical and growth characteristics of wheat (Triticum aestivum L. cv. Chamran) under available-water deficiency, this experiment was conducted in Ramin Agricultural and Natural Resources University, Khuzestan, Iran, in 2012. The experiment was arranged as factorial, based on randomized complete b...
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