نتایج جستجو برای: normal stress
تعداد نتایج: 970627 فیلتر نتایج به سال:
in this study we consider pcf (plane couette flow) which is introduced by two parallel planes which have same velocity in opposite direction and the distance between them is filled by viscoelastic fluid. by this way we have modeled viscoelastic damper. the constitutive equation of js (johnson-segalman) has been used for dynamic analysis of viscoelastic damper’s behavior. by using this equation ...
In order to study the response of 120 genotypes of rapeseed (including 100 hybrids and 20 parents) in terms of cold stress tolerance, an experiment was conducted in α-lattice design with two replications under normal (September) and late sowing (October) conditions during two years. Combined analysis of variance showed that genotypes were significantly different at 1% and there was a significan...
In order to evaluate water stress tolerance-related traits and their relationships in barley genotypes, as well as identification of drought tolerant genotypes, a field experiment was carried out during 2012-13 and 2013-14 growing seasons in College of Agriculture, Shiraz University, Iran. Seventy four foreign barley genotypes and two Iranian varieties (Reyhan and Nosrat) were evaluated under n...
Formulations for a general theory of thermoelasticity to generate accurate thermal stresses for structural members of aeronautical vehicles were developed in 1954 by Boley. The formulation also provides three normal stresses and a shear stress along the entire length of the beam. The Poisson effect of the lateral and transverse normal stresses on a thermally loaded beam is taken into account in...
Background and purpose: In clinical treatment of cancer, improving the efficacy of drugs and targeted drug delivery have always been a fundamental problem requiring more focused solutions. The purpose of this study was to investigate the protective effects of copper nanoparticles in prostate normal and cancer cell lines. Materials and methods: In this experimental study, different concentrati...
introduction: to measure radiation exposures rate in low-risk patients having stress-only and stress-rest myocardial perfusion imaging. methods: this was a prospective study conducted from january 2012 till november 2012 upon patients with low pre-test probability for coronary artery disease (cad). a stress mpi (stress-only if mpi is normal and no resting study) followed by a resting mpi study...
Background & Aim: Premenstrual syndrome (PMS) consists of physiological, cognitive and behavioral changes that periodically occur in luteal phase of menstrual in women. It is defined as premenstrual dysphoric disorder if it leads to a disruption in family, social and work activities. Material & Methods: In order to comparison of perceived stress, coping strategy, and social support between gir...
Wheat grain yield reduction occurs in most wheat growing regions of Iran due to post-anthesis water stress. This research was conducted to evaluate yield and yield components of wheat cultivars in normal irrigation and post anthesis irrigation cut-off conditions as a split-plot arrangement based on a randomized complete block design with three replications during 2015-16 in College of Agricultu...
Factor and principal component analyses are widely used in different sciences especially in agricultural science. To determine the factors that create variation between potato cultivars, in normal (non-stress) and water deficit (stress) conditions, two experiments were conducted in the form of randomized complete block design with three replications in summer 2002. Stepwise regression analysis ...
in order to evaluate the effect of terminal water deficit stress on leaf traits and their relations to grain yield in different barley genotypes (‘yousof’, ‘fajr30’, ‘nosrat’, ‘pbyt-46’, ‘pbyt-97’ and ‘morocco’), two separated experiments were conducted in stress (water withholding from anthesis towards the end of growing season), and non stress (normal irrigation) conditions based on rcbd with...
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