نتایج جستجو برای: bottom chisel plow energy consumption of operations was between 1389

تعداد نتایج: 21490932  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1388

a major concern in the last few years has been the fact that the cultural centers are keeping distance with what they have been established for and instead of reproducing the hegemony, they have turned into a place for resistance and reproduction of resistance against hegemony. because the cultural centers, as urban public spaces in the last two decades, have been the subject of ideological dis...

Journal: :اقتصاد و توسعه منطقه ای 0
مجید آقایی مهدیه رضاقلی زاده

this paper surveys economic growth and energy consumption relationship by new econometric methods in different sectors of iran. this study uses panel error correction model and panel co integration and causality tests to investigate short run and long run relationship between energy and value added growth in different sectors of iran’s economy with regards to energy price in the time period of ...

Journal: :مهندسی بیوسیستم ایران 0
عباس عاطفی دانش آموخته کارشناسی ارشد، دانشکده کشاورزی؛ دانشگاه شیراز سیدحسین کارپرورفرد دانشیار، دانشکده کشاورزی، دانشگاه شیراز

one of the basic adjustments in application of agricultural implements, particularly tillage tools, is their work in a leveled state while in operation. throughout the ongoing research, and by application of electronic and hydraulic circuits, an intelligent system was designed, developed and evaluated. the device is expected to perform the plow longitudinal as well as lateral adjustments at the...

2013
S. Beitler M. Holm T. Arndt A. Mozar M. Junker C. Bohn

The availability of renewable energy does not meet the demands of consumption. Hence, fossil fuels will continue to be an important energy source, and coal promises to cover the requirements for the coming decades. Because of its high energy content, deep lying bituminous coal and anthracite are important for energy generation. One trend in the future of coal mining is thin seam mining, because...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده ادبیات و زبانهای خارجی 1392

while performance-based language assessment has led to an increased authenticity and content validity in the practice of writing assessment, the reliability of ratings has become a major issue. research findings have shown different reactions by native english speaker (nes) and non-native english speaker (nns) teachers to students’ writings. the focus of this study is on investigating whether i...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1389

growing demands and requires of high data rate systems cause significant increase of high frequency systems for wideband communication applications. as mixers are one of the main blocks of each receivers and its performance has great impact on receiver’s performance; in this thesis, a new solution for ku-band (12-18 ghz) mixer design in tsmc 0.18 µm is presented. this mixer has high linearity a...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده ادبیات و علوم انسانی 1394

the ability to speak two languages in the world is a remarkable achievement. there is a good reason to believe that bilingualism is the norm for the majority of people in the world because 70% of the earth’s population are supposed to be bilingual or multilingual. various investigations have shown that the native language impacts foreign word recognition, and this influence is adapted by the de...

Journal: :ماشین های کشاورزی 0
سیدمحمدجواد افضلی ابراهیم جواهری

this study was carried out to evaluate the effects of tillage practices (with different depths) on soil penetration resistance, technical parameters and grain yield of wheat crop. the experiment was conducted as a randomized complete block design with three replications for two years. treatments included: moldboard plow fallowed by two passes of disc harrow and leveler (ct), two passes of disc ...

Journal: :مهندسی بیوسیستم ایران 0
علیرضا امانلو دانشجوی کارشناسی ارشد، دانشکده مهندسی و فناوری پردیس کشاورزی و منابع طبیعی حسن قاسمی مبتکر دانش آموخته کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی اسداله اکرم استادیار، پردیس کشاورزی و منابع طبیعی علی محمدی دانشجوی دکتری، پردیس کشاورزی و منابع طبیعی

efficient energy use in agriculture sector is one of the prerequisites to sustainable agriculture, because it allows financial savings, fossil resources preservation along with decreasing trend of air pollution. this research was conducted at the agricultural research field of zanjan university to determine the level of input energy in different tillage systems in forage maize production when i...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران - دانشکده علوم انسانی و اجتماعی 1388

the present study set out (a) to examine the categories of pedagogical knowledge related to the act of teaching of novice and experienced teachers as gleaned from their verbal report of what they were thinking about while teaching and (b) to compare the categories of pedagogical knowledge of novice and experienced teachers. the aim of comparing these two groups of teachers was to see whether di...

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