نتایج جستجو برای: stress effect
تعداد نتایج: 2006885 فیلتر نتایج به سال:
in order to study the effects of drought stress and nitrogen (n) levels on grain yield, yield components and water use efficiency of grain corn (sc.704), a field experiment was conducted in 2009 growing season. the experiment was split-plot based on randomized complete block design arrangement and four replicates. main plots were three irrigation levels included optimum irrigation (i1), moderat...
background stressful life events may cause initiation of drug use among people. the main purpose of this study was to evaluate the effectiveness of stress management skill training on depression, anxiety and stress levels in drug addicts after withdrawal. objectives the population included all drug addicts after withdrawal in 2012 in alborz province. materials and methods the study was quasi-ex...
since there is limited information on the simultaneous effect of drought stress and salicylic acid on yield and mucilagecontent of the medicinal herb, plantago ovata forssk is available, a pot experiment was conducted in factorial form basedon a randomized complete block design with three replications in jiroft, kerman province, south of iran. as the firstfactor, drought stress included four le...
Stress is a reaction to unwanted events disturbing body homeostasis which influences its pathways and target areas. Stress affects the brain through the lateral hypothalamic area (LHA) orexinergic system that mediates the effect of corticotropin-releasing hormone (CRH) through CRH receptor type 1 (CRHr1). Therefore, this study explores the outcome of stress exposure on anxiety development and t...
the effect of poss instruction in comparison with conventional instruction on development of esp learners’ parts of speech knowledge and attitude toward call.
in order to study the effect of compost and salinity stress on seedling growth and generative traits of wheat (sivand cultivar) a pot experiment was conducted based on complete randomized design arranged in factorial with six replications at the research greenhouse, faculty of agriculture, mashhad branch, islamic azad university, mashhad, iran, during in cropping season 2013-2014. factors were ...
خستگی پدیده ای است که از طریق بالا رفتن تعداد سیکلهای بارگذاری به مرور صدمه را در قطعه افزایش میدهد و نهایتا منجر به واماندگی آن میشود. جهت افزایش عمر و یکپارچگی قطعات تا کنون روشهای مختلفی برای ارزیابی خستگی ارائه شده است. این روشها را در یک دسته بندی کلی میتوان به سه شاخه تقسیم نمود: 1- روشهای بر پایه تنش 2- روشهای بر پایه کرنش و 3- روشهای انرژی. در این پژوهش سعی شده که عمر خستگی رینگ خودرو ب...
چکیده ندارد.
introduction: prenatal stress has deleterious effects on the development of the brain and is associated with behavioral and psychosocial problems in childhood and adulthood. this study aimed to determine the protective effect of l-arginine on fetal brain under maternal stress. methods: twenty pregnant wistar rats (weighting 200-230 g) were randomly divided into 4 groups (n=5 for each group). th...
In order to study the effect of drought stress on qualitative and quantitative traits of sunflower cultivars and use of drought tolerance stress to determine the most tolerant cultivar to drought stress, this experiment was conducted on six cultivars of sunflower under two irrigation regimes (normal irrigation and drought stress) at agricultural and natural resources center of Yazd in 2010. The...
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