نتایج جستجو برای: d e p e n d e n t

تعداد نتایج: 3598199  

Journal: :پژوهش های تولید گیاهی 0
محمد هادی پهلوانی عضو هیات علمی دانشگاه علوم کشاورزی و منابع طبیعی گرگان سید اسماعیل رضوی آزاد احمدی الهام پالوج

seed rot caused by pythium ultimum is an important disease of safflower in iran and other countries. therefore, finding the genetic sources of resistance and releasing of resistant cultivar is considered as important objective by safflower breeders. this disease will spread when air humidity and the moisture in the soil are sufficiently prepared and this situation occurs exactly in the time of ...

Journal: :نشریه دانشکده فنی 0
آرمان زارع بیدکی دانشگاه تهران farshad akhlaghi دانشگاه تهران

in this study, al/gr composites with 5,10,15,20 weight percent of graphite were produced by in-situ powder metallurgy method. the produced powder mixtures were consolidated and sintered at optimum conditions. the resultant composites were solution treated at 495?c and aged at 170?c. the influence of graphite content on the bending strength of composites was studied. the distribution of graphite...

Journal: :توسعه کارآفرینی 0
شیوا مرادی دانشجوی دکتری کارآفرینی گروه کارآفرینی - دانشگاه رازی کرمانشاه بیژن رضایی استادیار دانشکدة کشاورزی و منابع طبیعی رازی کرمانشاه عبدالحمید پاپ زن دانشیار دانشکدة کشاورزی و منابع طبیعی رازی کرمانشاه

this qualitative study was conducted to identify the factors and barriers of entrepreneurship development from the perspective of iranian entrepreneurs. in terms of purpose, this study is applied- developmental and it is performed via descriptive phenomenological method. qualitative content analysis was used to collect the data. the study population comprised of recorded interviews with the ent...

Journal: :فیزیک زمین و فضا 0
معصومه احمدی حجت دانشجوی دکتری هواشناسی، گروه هواشناسی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران، ایران فرهنگ احمدی گیوی دانشیار، گروه فیزیک فضا، موسسه ژئوفیزیک دانشگاه تهران، ایران سهراب حجام دانشیار، گروه هواشناسی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران، ایران

one of the most important atmospheric systems in the eurasian continent during the northern hemisphere winter season is the siberian high pressure. in this study, using the ncep/ncar reanalysis data for winters of 1948-2008, trend of changes in the intensity of the high system center and its effects on some meteorological fields are investigated. the results show that the 2m height mean tempera...

Journal: :تحقیقات دامپزشکی 0
حسینعلی عرب آموزشکده دامپزشکی دانشگاه سمنان علی رسولی گروه فارماکولوژی دانشکده دامپژشکی دانشگاه تهران عباسعلی جواهری آموزشکده دامپزشکی دانشگاه سمنان غلامرضا شمس گروه فارماکولوژی دانشکده دامپژشکی دانشگاه تهران

three hundred and fifteen day -old chickens were used to test the relationship between oxygen-derived free radicals and the biochemical, hematological and pathological alterations(associtd with ascites). they were randomly divided into three experimental groups and ascites were developed in two groups of animals by exposing them to low temperature or administration of triiodothyronine (t3,), an...

Journal: :علوم دامی ایران 0
شیلا هادی نیا علوم دامی پردیس کشاورزی و منابع طبیعی دانشگاه تهران محمود شیوازاد پردیس کشاورزی و منابع طبیعی دانشگاه تهران حسین مروج هیات علمی

a total of 160 day-old male broiler chickens (ross 308) were divided in a completely randomized design experiment, and assigned to 8 treatments and 4 replicates in their experimental units (cages). treatments included: t1: basal diet with no additional methionine, t2: basal diet plus 0.06, t3: basal diet plus 0.11, t4: basal diet plus 0.17 % of dl-methionine, t5: basal diet plus 0.06, t6: basal...

Journal: :physiology and pharmacology 0
sohrab hajizadeh dept. of physiology,tarbiat modares university, pobox:14115-111 tehran - iran batool erfani dept. of physiology,tarbiat modares university, pobox:14115-111 tehran - iran s. mohammad faghihi dept. of physiology,tarbiat modares university, pobox:14115-111 tehran - iran zahra barabadi dept. of physiology,tarbiat modares university, pobox:14115-111 tehran - iran marzeieh hosseini dept. of physiology,tarbiat modares university, pobox:14115-111 tehran - iran

beta-2 adrenoceptors in blood vessels are one of the active factors that play a role in regulation of tissue blood flow. in diabetic angiopathy, responsiveness of these receptors is decreased, while that is increased in inflammation. according to these opposite effects, the aim of this study was to investigate the vasodilatory response of knee joint blood vessels to salbutamol (beta-2 adrenocep...

Journal: :تحقیقات آب و خاک ایران 0
ندا یزدانی مطلق دانشجوی سابق کارشناسی ارشد، دانشکدة کشاورزی دانشگاه تبریز عادل ریحانی تبار استادیار دانشکدة کشاورزی دانشگاه تبریز نصرت اله نجفی دانشیار دانشکدة کشاورزی دانشگاه تبریز

rice (oryza sativa l.) is one of the iran's most strategic crops with water shortage as the most important abiotic stress limiting its yield. in the present research the effects of: variety, water regime, nitrogen (n) and phosphorus (p) levels on n, p and k uptake were studied under greenhouse conditions. the experiment design was a factorial one based upon a randomized complete blocks of ...

Journal: :علوم گیاهان زراعی ایران 0
فواد فاتحی دانشجوی سابق دکتری،پردیس کشاورزی و منابع طبیعی دانشگاه تهران عبدالهادی حسین زاده دانشیار پردیس کشاورزی و منابع طبیعی دانشگاه تهران هوشنگ علیزاده استادیار پردیس کشاورزی و منابع طبیعی دانشگاه تهران

a proteomic approach was conducted to further understand the mechanism of plant responses to salinity in hordeum bulbosom. three-week-old seedlings were treated with 300 mm of nacl for 21 days. total proteins of fourth leaf were extracted and separated by two-dimensional gel electrophoresis. more than 500 protein spots were reproducibly detected, including 46 spots that were up-regulated and 16...

Journal: :تحقیقات جغرافیایی 0
اکبر گل دوست دانشگاه محقق اردبیلی بهروز سبحانی دانشگاه محقق اردبیلی

drought affects on all aspects of human actirities seriously as a climatic phenomenon. however, the studies related to this phenomenon based on suitable method are very few. studying the drought features and its prediction can be effective on decreasing of resulted losses or damages. therefore, drought and evaluation of its prediction possibility are studied for some stations of ardabil provinc...

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