نتایج جستجو برای: production index

تعداد نتایج: 985712  

Journal: :علوم دامی ایران 0
بهزاد صدیقی دانشجوی دکتری، گروه علوم دامی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج محمود شیوازاد استاد، گروه علوم دامی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج مجتبی زاغری استاد، گروه علوم دامی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

in this experiment, randomized complete block design with four replications was used for evaluating of the effect of three feeding methods including: without feed restriction (control group), 6 hours feed restriction from 7 to 21 days and 4 hours from 22 to 28 days, 6 hours feed restriction from 7 to 14 days and 4 hours from 15 to 21 days on performance and ascites prevention of arian male broi...

Journal: :desert 0
h. ahmadi professor, science and research branch, islamic azad university,tehran, iran h. azarnivand professor, faculty of natural resources, university of tehran, karaj, iran m.r. ekhtesasei associate prof., faculty of natural resources, yazd university, yazd, iran m. tazeh assist. prof., faculty of natural resources, ardakan university, ardakan, iran

there have been different indices identified for desertification. among these is technogenic desertification index which seems much more efficient. in this study, some of technogenic desertification indices were studied and evaluated. first land use maps of the region were taken from irs-pan satellite image and aerial photos analysis. after evaluating the area of different uses, lands that had ...

Journal: :مهندسی بیوسیستم ایران 0
مهدی خجسته پور دانشیار گروه مهندسی بیوسیستم، دانشگاه فردوسی مشهد علیرضا طاهری راد دانشجوی کارشناسی ارشد مکانیزاسیون، گروه مهندسی بیوسیستم، دانشگاه فردوسی مشهد امین نیکخواه دانشجوی کارشناسی ارشد مکانیزاسیون، گروه مهندسی بیوسیستم، دانشگاه فردوسی مشهد

the main objective of this study was to investigate the environmental impacts of cotton production in golestan province of iran using life cycle assessment methodology. the data used in the study were obtained from cotton farmers with face-to-face questionnaire method during 2011-2012. the questionnaires included total inputs of cotton production in the region and yield weight. environmental im...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد گرمسار - دانشکده علوم انسانی 1391

the present study was conducted to investigate the effect of implicit focus on form through input flooding and the effect of noticing, explicit focus on form on linguistic accuracy. to fulfill the purpose of the study, 86 iranian pre-intermediate efl learners of one of the language institutes were chosen by means of administering ket as the homogeneity test. these learners were pretested throug...

Journal: :ماشین های کشاورزی 0
کامبیز عباسی مرتضی الماسی علی محمد برقعی سعید مینایی

agricultural mechanization is a method for transiting from traditional agriculture towards industrial and sustainable one. due to the limitation of natural resources and increasing population we need to have economical production of agricultural crops. for reaching this destination; agricultural mechanization has a remarkable role. so it is necessary to have an extensive view for mechanization,...

Journal: :مهندسی بیوسیستم ایران 0
سیدحسن پیشگرکومله دانشگاه تهران اسداله اکرم عضو هیئت علمی علیرضا کیهانی عضو هیئت علمی

agriculture (mechanization), food industry and environment are the concepts that cannot be surveyed separately (because of their interaction). present research aimed to study tomato paste production by applying life cycle assessment. two functional unit of kg co2-eq/ kg tomato and kg co2-eq / kg paste was used. data were collected from one paste factory in alborz province and open-field tomato ...

Journal: :desert 2013
h. ahmadi h. azarnivand m.r. ekhtesasei m. tazeh

there have been different indices identified for desertification. among these is technogenic desertification index which seems much more efficient. in this study, some of technogenic desertification indices were studied and evaluated. first land use maps of the region were taken from irs-pan satellite image and aerial photos analysis. after evaluating the area of different uses, lands that had ...

Ali Jafari, Asadolah Akram Fatemeh Almasi Hadi Afazeli Mosen Nosrati

During the past few years, modeling in agriculture has attracted considerable attention. New modeling methods including neural networks are employed in various industries, and it is necessary that their use in agriculture be also considered. This research addressed the trend of energy use in broiler farms in Alborz Province and sought to model the trend of energy consumption and production in t...

ژورنال: مرتع 2022

Background and objectives: Alongside with the progresss in satellite sensors, their role on obtaining information and study of the environmental events and phenomena have become increasingly important. One of these precious data which is the basis for many planning and decision making in rangelands, is the above ground net primary production assements. The traditional method of estimating ANPP ...

Journal: :تحقیقات نظام سلامت 0
مریم سلیمی کارشناس ارشد، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران. افشین ابراهیمی استادیار، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران افسانه سلیمی دانشجوی کارشناسی ارشد، گروه جغرافیای طبیعی(گرایش اقلیم شناسی)، دانشکده جغرافیا و علوم محیطی، دانشگاه تربیت معلم سبزوار، سبزوار، ایران.

background: the municipal waste landfill sites have high a potential of contaminating the ‎ environment and having effects of the human health due to waste degradation, production of leachate, carbon dioxide and ‎ methane gases. the present study aims to evaluate the location of the solid waste landfill using gis and based on the oleckno index. assessment parameters included average annual rain...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید