نتایج جستجو برای: forest of north of iran
تعداد نتایج: 21202981 فیلتر نتایج به سال:
abstract chickpea is weak in competition of weeds that damages to it at between 40 t0 60 percent. kermanshah province is one of the most important region for chickpea fields in iran. for these reosons, weed management is necessary in this crop. in order to evaluate of herbicides and stubble control on broad leave weeds control in chickpea. experiment was conducted in agricultural research stat...
چکیده مورچهها با حمایت از شپشکها در مقابل دشمنان طبیعی، میتوانند برنامههای کنترل بیولوژیک آنها را مختل نمایند. طی سالهای 1389 و 1390 با نمونهبرداری از باغات مرکبات شهرستانهای ساری و بهشهر، فون و فراوانی نسبی مورچههایِ همراه با شپشکها مورد مطالعه قرار گرفت. همچنین، تاثیر تراکمهای مختلف کاست کارگر گونهی santschi lasius turcicus بر میزان تغذیه و فراسنجههای واکنش تابعی حشرات ماده و لا...
this study sought to examine the effect of cooperative game on iranian students achievements in english alphabet learning. cooperative games are games, in which players or teams work together towards a common goal without defeating someone. the methodology used in this study was experimental. the population of the study was 60 female students from the grade one in secondary school in tabriz, ir...
Species in the genus Castanea Mill. are one of the worthwhile species in the Hyrcanian forest of west Guilan (N Iran) with low region such as Siahmazgi, Ghalerodkhan and Visrod. that do not have good condition by reason of human interfering and disease. They have varying economic importance as nut tree crops, therefore, DNA barcoding technique can be a straightforward method for taxonomic statu...
In the high forests which managing with close-to-nature silvicultural method, the future of forests depends on the stable establishment of saplings planted in the gaps; hence, the current study was done by selection sampling method with the aim of qualitative and quantitative investigation of natural regeneration based on the gap area in two different beech (Fagus orientalis Lipsky) forests: pu...
background: beta-thalassemia patients have a high prevalence for hepatitis c virus (hcv) infection. in developing countries, hcv antibody is reported to be high in this group of patients. this study aims to determine the distribution of hcv amongst beta-thalassemia patients in northern iran. materials and methods: this study was undertaken from october 2010 to june 2011 on 245 beta-thalassemia ...
tea might be considered as the most popular drink in iran as well as some other parts of theworld. its popularity to some extent depends on its flavor and some other constituents present in its leaves orextract. black tea samples from various agro climatic zones of northeast of iran were evaluated for the chemicalconstituents, polyphenols and metal analysis that determine the quality perception...
The aim of this study was to isolate and identify airborne fungi from locations in Babol city, Babolkenar forest and a beach on the Caspian Sea (all in North part of Iran) in spring and summer. Of 126 samples collected, the most clinically important isolated fungi were Mucor spp. (18.6%) in the forest, Alternaria spp. (13.4%) at the beach; and Cladophialophora spp. (15.8%), Mucor spp. (11.7%) a...
abstract the first purpose of this study was to investigate the effect of consciousness-raising (c-r) activities on learning grammatical structures (simple present tense in this case) by iranian guidance school efl learners. the second one was to investigate the effect of gender on learning the simple present tense through c-r activities and tasks. finally, this study aimed to investigate the ...
cerastium pumilum curtis از تیره میخک برای اولین بار از ایران به صورت گونه جالب گزارش می شود. این گیاه از جمله گیاهان ماسه رست در سواحل جنوبی دریای خزر در دواستان گیلان و مازندران می باشد. یادداشتهای تاگزونومیک و پراکنشی برای این گونه ارائه شده است.
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