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تعداد نتایج: 15211457  

Journal: :فیزیک زمین و فضا 0
بهلول علیجانی استاد، گروه جغرافیا، دانشگاه تربیت معلم تهران، کرج عباس مفیدی استادیار، گروه جغرافیا، دانشگاه فردوسی مشهد عباسعلی علی اکبری بیدختی استاد، گروه فیزیک فضا، مؤسسة ژئوفیزیک دانشگاه تهران

a synoptic method based on stream analysis is applied to understand the governing mechanism of summer rainfall occurrence in the south of iran. based on this, the rainfall data of 152 stations of iran were analyzed for a 33-year period (1970-2002). investigating the spatial and temporal distribution of summer rainfall, a typical rainy region is recognized in the south east of iran. it is found ...

Journal: :دانش گیاه پزشکی ایران 0
بدر السادات محمودی میمند دانشکدۀ کشاورزی، دانشگاه ولی عصر(عج)، رفسنجان، ایران روح اله صابری ریسه دانشکدۀ کشاورزی، دانشگاه ولی عصر(عج)، رفسنجان، ایران محمد مرادی پژوهشکدۀ پسته، مؤسسۀ تحقیقات علوم باغبانی، سازمان تحقیقات آموزش و ترویج کشاورزی، رفسنجان، ایران حسین علایی دانشکدۀ کشاورزی، دانشگاه ولی عصر(عج)، رفسنجان، ایران امیر حسین محمدی پژوهشکدۀ پسته، مؤسسۀ تحقیقات علوم باغبانی، سازمان تحقیقات آموزش و ترویج کشاورزی، رفسنجان، ایران

activities of thirty bacterial strains obtained from plants rhizosphere in different areas against phytophthora drechsleri were assessed through in vitro and greenhouse experiments. dual culture and extracellular metabolites tests were used in in vitro assays. the bacterial strains inhibited growth of p. drechsleri, the highest inhibition zones was belonged to t17-4 strain with 61.904% in dual ...

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: :iranian journal of cancer prevention 0
j ansari dept. of radiation oncology, aiatollah khoansari hospital, arak university of medical sciences, arak, iran a chehrei dept. of pathology, amiralmoamenin hospital, arak university of medical sciences, arak, iran m amini dept. of surgery, valiasr hospital, arak university of medical sciences, arak, iran sh alizade dept. of surgery, valiasr hospital, arak university of medical sciences, arak, iran mh sanei dept. of pathology, alzahra hospital, isfahan university of medical sciences, isfahan, iran

background: h e r2/ n eu i so n e o ftheepi de rmalg r owth f actor r e c e pt o rsfami l i e s andsee m stohaveprognosticsignificanceofsomesolid t umors.theo b jecti v eof thisstu d yistoevaluatet h epossi b ilityofher2ex p ressioningastricca n cersand the p o s si b le r e lat i o n ship o fh e r2withtumo r ’scli n icopat h o l o gicpara m e te r sa n d a l s oits pr o gno s tic r o l e .   m...

Journal: :علوم باغبانی ایران 0
محمد کاظم سوری استادیار دانشکده کشاورزی، دانشگاه تربیت مدرس، تهران نسرین فرهادی دانشجوی کارشناسی ارشد دانشکده کشاورزی، دانشگاه تربیت مدرس، تهران حمیدرضا روستا استادیار دانشکده کشاورزی، دانشگاه ولی عصر(عج) رفسنجان

nitrogen forms exert significant effects on physiological and morphological characteristics of plant. in this study, the effects of ammonium, nitrate, and ammonium-nitrate on pepper plants were investigated in soil culture, as well as in solution culture. in the soil culture, 3, 4-dimethylpyrazole phosphate (dmpp) was used as a standard nitrification inhibitor to guarantee the presence of ammon...

Journal: :علوم زیستی ورزشی 0
ولی الله دبیدی روشن دانشیار دانشگاه مازندران بهرام صادقپور استادیار دانشگاه مازندران زهرا جهانیان کارشناس ارشد دانشگاه مازندران

the aim of this research was to evaluate the effect of one session of exhaustive exercise with low intensity (55-65% vo2max), moderate intensity (65-75% vo2max) and high intensity (75-85% vo2max) on adiponectin in active women. for this purpose, 30 healthy women (mean age 21.6 years, weigh 59.7+3.35 kg, vo2max 39.1+0.58 ml/kg/min, no history of cardiovascular diseases and diabetes) were selecte...

Journal: :محیط شناسی 0
ام السلمه بابایی فینی استادیار اقلیم شناسی، گروه جغرافیا، دانشگاه پیام نور طاهر صفرراد دانشجوی دکتری اقلیم شناسی، دانشکدۀ جغرافیا، دانشگاه تهران مصطفی کریمی استادیار اقلیم شناسی، دانشکدۀ جغرافیا، دانشگاه تهران

introduction earth has ever been exposed to environmental hazards. the hazards are continually occurring in the world in the recent years. among them, atmospheric elements have created many human and financial losses in different regions. one of the hazards is dust events and in its severe case is dust storm. it happens more frequently in arid and semiarid regions in deserts and their surroundi...

Journal: :iranian journal of parasitology 0
mehdi zarean department of medical parasitology, school of medicine, ahvaz jundishapur university of medical sciences, ahvaz, iran. sharif maraghi department of medical parasitology, school of medicine, institute of health research, thalassemia and hemoglobinopathy research center, ahvaz jundishapur university of medical sciences, ahvaz, iran. homa hajjaran department of medical parasitology and mycology, school of public health, tehran university of medical sciences, tehran, iran. mehdi mohebali department of medical parasitology and mycology, school of public health, tehran university of medical sciences, tehran, iran. mohammad hossein feiz-hadad department of medical parasitology, school of medicine, ahvaz jundishapur university of medical sciences, ahvaz, iran. mohammad ali assarehzadegan department of immunology, school of medicine, ahvaz jundishapur university of medical sciences, ahvaz, iran.

background: in this study, two-dimensional gel electrophoresis (2-de) method was applied to determine and compare the protein spots expressed in the two field isolates of leishmania major and recovered from the patients who were clinically sensitive and resistant to glucantime® treatment. methods: leishmania parasites were isolated from the cutaneous lesions of two cl infected patients in shira...

Journal: :علوم باغبانی ایران 0
نجمه زینلی دانشجوی دکتری دانشگاه تهران مجتبی دلشاد استادیار، پردیس کشاورزی و منابع طبیعی کرج، دانشکده علوم زراعی و دامی، گروه علوم باغبانی و فضای سبز، تخصص: فیزیولوژی و اصلاح سبزی¬ها/ تولید گلخانه ای/ سیستم هایدروپونیک عبدالکریم کاشی استاد دانشگاه تهران کمال الدین حق بین استادیار پژوهشگاه ملی مهندسی ژنتیک

this study was conducted to determine water stress tolerance of two iranian dudaim melons (kerman & birjand) and one iranian muskmelon (samsoury). throughout the experiment, three different levels of irrigation with three irrigation starting points (-50, -65 and -75 cb of matric potential) were employed. results indicated that water stress significantly affected yield, firmness, fruit sugars as...

Journal: :فیزیک زمین و فضا 0
عسل رحیمی زینال دانشجوی کارشناسی ارشد ژئوفیزیک، گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران، ایران محمدعلی ریاحی دانشیار، گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران، ایران

this paper describes a methodology for the integration of well logs and a series of grid-based attributes extracted from interpreted seismic data for prediction of porosity distributions. the studied area is located in the southwest iran. before finding a relationship between the target logs and predicted logs from 3d seismic data, we have interpreted the 3d seismic data in the studied area. al...

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