نتایج جستجو برای: and coefficient of friction four moisture contents 84

تعداد نتایج: 24090982  

ژورنال: علوم آب و خاک 2000
حاج عباسی, محمدعلی, افیونی, مجید , مصدقی, محمدرضا , همت, عباس ,

Soil structure maintenance and stability is an important index indicating sustainable soil management. In this regard, components such as soil moisture and organic matter affect soil compactibility during farm machinery trafficking. Soils in Central Iran are commonly very low in organic matter (OM) and thus susceptible to compaction. This study was conducted to measure the effects of soil moist...

حاج عباسی, محمدعلی, افیونی, مجید , مصدقی, محمدرضا , همت, عباس ,

Soil structure maintenance and stability is an important index indicating sustainable soil management. In this regard, components such as soil moisture and organic matter affect soil compactibility during farm machinery trafficking. Soils in Central Iran are commonly very low in organic matter (OM) and thus susceptible to compaction. This study was conducted to measure the effects of soil moist...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی گرگان - دانشکده تولیدات گیاهی و دامی 1391

میزان نشو و نما و قدرت باروری شبپره ی مدیترانه ای آرد 2) جوانه ی ) ،(fb) ( رژیم غذ ایی تهیه شده از ( 1) آرد گندم + سبوس گندم ( 75 درصد و 25 درصد 3) جوانه ی گندم + ) ،(myg) ( گندم + مخمر نان + گلیسرول به نسبت ( 10 به 1 به 2 وزن به وزن 4) سبوس گندم + مخمر نان + گلی سرول ( 20 به 1 به 2 ) ،(my) ( مخمر نان ( 10 به 1 وزن به وزن و ( 5) سبوس گندم + مخمر نان + گلیسرول + آب ( 100 به 5 به 10 به 5 وزن ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1387

boron nitride semiconducting zigzag swcnt, $b_{cb}$$n_{cn}$$c_{1-cb-cn}$, as a potential candidate for making nanoelectronic devices was examined. in contrast to the previous dft calculations, wherein just one boron and nitrogen doping configuration have been considered, here for the average over all possible configurations, density of states (dos) was calculated in terms of boron and nitrogen ...

Journal: :مهندسی بیوسیستم ایران 0
جلیل تقی زاده طامه پردیس کشاورزی و منابع طبیعی دانشگاه تهران- گروه مهندسی مکانیک بیوسیستم علی جعفری پردیس کشاورزی و منابع طبیعی دانشگاه تهران حسین موسی زاده پردیس کشاورزی و منابع طبیعی دانشگاه تهران- گروه مهندسی مکانیک بیوسیستم نازیلا طربی پردیس کشاورزی و منابع طبیعی دانشگاه تهران- گروه مهندسی مکانیک بیوسیستم

organic manure plays an important role in the improvement of soil structure by decreasing bulk density and increasing porosity. however, the method of manure spreading influences its beneficial impact on soil structure. in this study, a novel helical manure distributor machine capable of spreading manure with different moisture contents at maximum distribution width was developed and the machin...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده ادبیات و علوم انسانی 1392

the construct of self-efficacy has received increasing attention in research over the past two decades. many studies have been carried out 1.3 significance of the study this study has pedagogical implications since improving students’ self- efficacy and autonomy is important for promoting actual performance on classroom academic tasks. in academic settings, it has been shown that self-effi...

Journal: :مهندسی بیوسیستم ایران 0
سعید علی عسگریان نجف آبادی دانشجوی کارشناسی ارشد، دانشکده کشاورزی دانشگاه تبریز حمیدرضا قاسم زاده استاد دانشکده کشاورزی، دانشگاه تبریز جعفر حاجی لو استادیار دانشکده کشاورزی، دانشگاه تبریز

in the present research, the physical, nutritional and chromatic properties of strawberry (fragaria xananassa), selva cultivar were studied. the values for mass, diameter, length, geometric meandiameter and sphericity of strawberry fruit at 91.07% moisture content (d.b.) were 11.885 g, 28.260mm 29.697 mm, 28.585 mm and 0.971 respectively. at the same moisture content, volume, truedensity, bulk ...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده تربیت بدنی علوم ورزشی 1391

the purpose of this study is to describe and determine the relationship between relationship marketing, customer satisfaction and intention to revisited in mashhad’s women aerobics clubs. to do this,300 randomly customers from women aerobic clubs were chosen and data was collected through kim relationship marketing questionnaire(2008) and ?=0.92, lim satisfaction questionnaire(2008) and ?=0...

Journal: :journal of agricultural science and technology 2012
f. shahbazi m. nazari galedar

the research was conducted in order to determine the bending stress, young’s modulus, shearing stress, and shearing energy of safflower stalk as a function of moisture content and stalk region. the bending forces were measured at different moisture contents and the bending stress and the young’s modulus were calculated from these data. for measuring the shear forces, the stalk specimens were se...

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