نتایج جستجو برای: stress conditions

تعداد نتایج: 1234867  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان 1371

the effect of the presence of perforations on he stresses of a plate is a problem which is of great interest in structural design and in the mathemattical theory of elasticity. among the many hole patterns that are likely to require consideration is the ring of equally spaced circular holes. the present worke investigates stress & strain analysis of a thin isotropic circular plate containing a ...

2005
Victor Isakov Jenn-Nan Wang Masahiro Yamamoto

In this paper we prove a Hölder and Lipschitz stability estimates of determining the residual stress by a single pair of observations from a part of the lateral boundary or from the whole boundary. These estimates imply first uniqueness results for determination of residual stress from few boundary measurements.

Journal: :چغندرقند 0
رحیم محمدیان مرکز تحقیقات کشاورزی و منابع طبیعی خراسان سید یعقوب صادقیان مطهر هیئت علمی موسسه تحقیقات اصلاح و تهیه بذرچغندرقند محمد مقدم واحد دانشکده کشاورزی دانشگاه تبریز حمید رحیمیان دانشکده کشاورزی دانشگاه تهران

this study was conducted over a three-year period (1998, 1999 and 2000) to evaluate some drought tolerance indices and their relations with sugar yield in some sugar beet genotypes under early season drought and non-drought conditions. the experimental design was a split plot with a randomized complete block. the main plots consisted of two irrigation regimes: non-stress and water stress in ear...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1391

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1381

deposite the different criticisms on contrastive analysis it has been proved that the results of it(when processed)can be usuful in a tefl environment,specially at the level of phonology.this study is an attempt to compare and contrast the sound systems of kurdish and english for pedagogical aims. the consonants,vowels,stress and intonation of the twolanguages are described by the same model-ta...

Journal: :علوم گیاهان زراعی ایران 0
عبدالهادی حسین زاده منصور خضری عفراوی سید تراب میری علی پیغمبری

twenty five durum wheat lines were evaluated under drought stress and non-stress conditions employing randomized complete block design of 4 replications. significant differences were observed among the lines for most traits in either stress or non-stress conditions. correlation analysis under non-stress conditions indicated that grains per spike and number of spikes per m2 and while under stres...

Journal: :علوم گیاهان زراعی ایران 0
نوش آفرین خواجه یحیی امام حسن پاک نیت علی اکبر کامگار حقیقی

to evaluate the growth regulatory effect of chlormequat chloride (ccc) under drought stress conditions on three barley cultivars, a field study was conducted under badjgah agro climatic conditions (altitude 1810 m, longitude 52° 46´, and latitude 29° 50´) during 2003-2004 growing season. a randomized complete block based split- split plot of four replications was employed with two moisture leve...

Journal: :آب و خاک 0
میترا رحمتی غلامحسین داوری نژاد محمد بنایان مجید عزیزی

in order to study the sensitivity of vegetative growth to water deficit stress of a late-maturing peach (prunus persica l. cv. elberta) under orchard conditions, an experiment was conducted as randomized complete-block design with three treatments and four repetitions in shahdiran commercial orchard in mashhad during 2011. three irrigation treatments including 360 (low stress), 180 (moderate st...

Journal: :بوم شناسی کشاورزی 0
حامد هادی نانسی بابائی جهانفر دانشیان محمد حسین ارزانش آیدین حمیدی

seedling characteristics of different sunflower (helianthus annus l.) cultivars under drought stress and inoculation with the azospirillum lipoferum in a spilt-factorial layout based on randomized complete block design with three replications were evaluated. treatments included dehydration stress (seed produced on maternal plants which irrigated after 60 (desirable irrigation), 120 (medium stre...

Journal: :علوم گیاهان زراعی ایران 0
علی وند کریمی کارشناس ارشد اصلاح نباتات، دانشکدة کشاورزی دانشگاه آزاد، واحد علوم و تحقیقات تهران معصومه پوراسماعیل استادیار، مؤسسه تحقیقات اصلاح و تهیه نهال و بذر شاهین واعظی استادیار، مؤسسة تحقیقات اصلاح و تهیة نهال و بذر آسا ابراهیمی استادیار دانشکدة کشاورزی دانشگاه آزاد، واحد علوم و تحقیقات تهران

in order to evaluate drought tolerance of chickpea genotypes and identifying the best indices of drought tolerance, the 20 genotypes desi chickpea plus two improved cultivars (kaka and piroz) were tested using a randomized complete block design under two irrigated (non stress) and (stress) conditions. quantitive drought tolerance and susceptibility indices such as stress tolerance index (sti), ...

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