نتایج جستجو برای: stress variations

تعداد نتایج: 619594  

Journal: :international journal of advanced design and manufacturing technology 0
mohammad sedighi iran university of science and technology m. t. noorian a. h. jabbari

shrink fit process is a useful technique in order to introduce beneficial residual stress in compound pressure vessels. in this paper, the effects of geometrical tolerances on residual stresses have been studied for a compound shrink fitted pressure vessel, practically. three layers, which are designed based on an optimum nominal thickness and overlap dimensions and tolerances, have been fitted...

Journal: :به زراعی کشاورزی 0
محسن ابراهیمی استادیار گروه علوم زراعی و اصلاح نباتات، پردیس ابوریحان، دانشگاه تهران، پاکدشت محمد گلباشی دانشجوی دکتری گروه زراعت و اصلاح نباتات، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج محمدرضا بی همتا استاد گروه زراعت و اصلاح نباتات، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج عبدالهادی حسین زاده دانشیار گروه زراعت و اصلاح نباتات، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج منیژه خیالپرست استادیار گروه زراعت و اصلاح نباتات، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج

to study the phenotypic and genotypic diversity of some important agronomic traits associated with yield in white beans, 30 genotypes of white bean were evaluated using a randomized complete block design with four replications in two environments under water stress and non stress conditions. analysis of variance for most of the traits showed significant differences among genotypes, indicating t...

Journal: :American journal of physiology. Cell physiology 2008
Lisong Ai Mahsa Rouhanizadeh Joseph C Wu Wakako Takabe Hongyu Yu Mohammad Alavi Rongsong Li Yi Chu Jordan Miller Donald D Heistad Tzung K Hsiai

Fluid shear stress modulates vascular production of endothelial superoxide anion (O2*-) and nitric oxide (*NO). Whether the characteristics of shear stress influence the spatial variations in mitochondrial manganese superoxide dismutase (Mn-SOD) expression in vasculatures is not well defined. We constructed a three-dimensional computational fluid dynamics model simulating spatial variations in ...

Journal: :Journal of experimental botany 2011
Arafet Manaa Hela Ben Ahmed Benoît Valot Jean-Paul Bouchet Samira Aschi-Smiti Mathilde Causse Mireille Faurobert

To evaluate the genotypic variation of salt stress response in tomato, physiological analyses and a proteomic approach have been conducted in parallel on four contrasting tomato genotypes. After a 14 d period of salt stress in hydroponic conditions, the genotypes exhibited different responses in terms of plant growth, particularly root growth, foliar accumulation of Na(+), and foliar K/Na ratio...

Journal: :European heart journal 1997
S Iliceto L Galiuto P Colonna V F Napoli P Rizzon

AIMS To evaluate the effects of acute, atrial pacing-induced, reversible myocardial ischaemia on myocardial thickening and integrated backscatter cyclic variations in patients with or without coronary artery disease. METHODS AND RESULTS Thirty-six patients with suspected coronary artery disease underwent transoesophageal echocardiography with simultaneous atrial pacing, and coronary angiograp...

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