نتایج جستجو برای: stress and stress condition therefore

تعداد نتایج: 16928081  

پایان نامه :دانشگاه تربیت معلم - سبزوار - دانشکده ادبیات و زبانهای خارجی 1390

this study investigated the effects of planning on second-language written production with regard to task type. the participants were 75 iranian learners of english as a foreign language attending a private foreign language institution. they were asked to complete two different types of writing tasks (expository writing task and argumentative writing task) in different planned conditions (indiv...

Journal: :ecopersia 2013
javad mirzaei hamed yousefzadeh

the aims of this study were to assess the effects of drought stress on peroxidase (pod), superoxide dismutase (sod) and catalase (cat) activities as well as free proline content and growth parameters of pistacia khinjuk seedlings under drought stress. therefore, the one-year seedlings of pistacia khinjuk subjected to water stress (25%, 50%, 75%, and 100% field capacity) for 8 months in greenhou...

ژورنال: علوم زراعی ایران 2020
Rezaizad, Abbas, Shirani Rad, Amir Hossein, Zareei Siahbidi, Asadollah,

Breeding and production of drought tolerant cultivars for arid and semi-arid area is very important. The present experiment was carried out to evaluate the effects of drought stress on seed yield and yield components of oilseed rape as well as identification of high yielding and drought stress tolerant genotypes. Eighteen new winter oilseed rape lines and commercial cultivars were evaluated und...

Journal: :iranian journal of neonatology 0
haydeh heidari assistant professor, faculty of nursing and midwifery, shahrekord university of medical sciences, shahrekord, iran marzieh hasanpour pediatric and neonatal intensive care nursing department, school of nursing and midwifery, tehran university of medical sciences, tehran, iran marjan fooladi fulbright scholar and professor at florida state university, college of nursing

background: infants are regarded as a vulnerable group in need of nursing care, particularly during nicu admission. parents of these infants often experience emotional, psychological and physical upheavals. therefore, nurses can be of great help to the parents and facilitate a healthy transition from this period. improper communication with parents, who seek information on their infant’s condit...

Journal: :به نژادی گیاهان زراعی و باغی 0
زهراسادات طاهری پورفرد دانشجوی دکتری اصلاح نباتات، گروه علوم زراعی و اصلاح نباتات، پردیس ابوریحان، دانشگاه تهران، پاکدشت، ایران علی ایزدی دربندی دانشیار، گروه علوم زراعی و اصلاح نباتات، پردیس ابوریحان دانشگاه تهران، پاکدشت، ایران حبیب اله قزوینی دانشیار، بخش غلات، مؤسسۀ تحقیقات و اصلاح نهال و بذر، کرج، ایران محسن ابراهیمی دانشیار، گروه علوم زراعی و اصلاح نباتات، پردیس ابوریحان دانشگاه تهران، پاکدشت، ایران سید محمد مهدی مرتضویان استادیار، گروه علوم زراعی و اصلاح نباتات، پردیس ابوریحان دانشگاه تهران، پاکدشت، ایران

abstract: evaluation of drought tolerance for 20 barley genotypes were conducted under normal irrigation and terminal stress condition by withholding irrigation at the time of 50% flowering. drought effect on grain yield and plant total mass traits was studied and eight of stress indices including stress tolerance index (sti), stress tolerance (tol), stress susceptibility index (ssi), mean prod...

Journal: :تولید گیاهان زراعی 0

breeding for environmental stress is one of the most important goals in plant breeding. among stresses, drought stress has high influencing on limitation of wheat production. so, in order to find the best drought tolerant genotypes, 24 genotypes were planted in three separate experiments in ardebil: one with optimum irrigation (control), another with water stress at pre-anthesis stage and the o...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زبانهای خارجی 1391

as polysemy is encountered frequently in english as foreign language. fl learners’ ability to disambiguate polysemous verbs becomes critical to their comprehension in the target language. this thesis, accordingly, investigated how iranian efl learners achieved comprehension of english polysemous verbs by using three different types of cues: (1) elaborated context, (2) semantic frames, and (...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران 1381

اجزا بدنه خودرو عموما در معرض بارهای نامتناسب قرار دارند. از آنجا که تخمین عمر اجزا سازه و بدنه خودرو عموما به تغییر وزن و شتاب خودرو و هزینه ساخت و مسائل ایمنی و استحکام و عمر سازه منتهی می گردد، در صنایع طراحی و ساخت خودرو از اهمیت ویژه ای برخوردار است. تئوری های ارائه شده در این زمینه عموما برای اجزاسازه ای تحت بارهای بسیار ابتدایی سینوسی و هندسه اولیه ارائه شده اند، به گونه ای که عمر قطعات ...

Journal: :فصلنامه علمی اکوفیزیولوژی گیاهان زراعی 0
علی جعفری کارشناس ارشد زراعت/ دانشگاه پیام نور استان تهران

in order reaching to occurate water regime under minimum tillage system and its effect on the physiological indices of 3 rice cultivars an experiment  was conducted as a split-plot design based on  randomized complete block with three replication in the year of 2006-2007 at research field of shavour station. treatment contains three water regimes with one day or check, two (i2) and three days (...

ارزانی, احمد, میرمحمدی میبدی, سید علی‌محمد , گل آبادی, مریم ,

The purpose of this study was to describe the correlations between wheat grain yield (GY) and its components, under environmental stress and non-stress conditions, and recognition of the most effective yield components and their development stages in making interaction with the environment. Two generations of F3 and F4, produced from a cross between Oste-Gata (drought tolerant) and Massara-1 (s...

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