نتایج جستجو برای: natural draft

تعداد نتایج: 506483  

2010
Rick Rheingans

The course examines natural resource issues affecting developing countries, and explores the impacts on communities, households, their decisions, and their health. Key resource use issues include water use (drinking, sanitation, and irrigation), agriculture (intensification, pesticide use, and land degradation), fuel wood scarcity, deforestation, conservation, and mining. For each of these issu...

Journal: :مهندسی بیوسیستم ایران 0
لیلا ندرلو رضا علیمردانی اسداله اکرم پیام جوادی کیا

drafts of major primary tillage implements were measured in a clay loam soil using a tension loadcell. implements consisted of a moldboard, a disk and a chisel plow each equipped with one tillage unit. a photoelectric speed sensor was used for actual forward speed measurements. during the study, the effects of forward speed and tillage depth on draft requirements were investigated. a general re...

2006
Daniel Pouzzner

The neostriatum and associated organs are a widely distributed and densely interconnected subcortical system. Anatomically, through a variety of stages and pathways, the striatopallidal system (SPS) is a complex mosaic of segregation, convergence, and divergence. Computationally, it is characterized by competitive selection and reinforcement-driven learning. Although the SPS is canonically a sy...

عطاری مقدم, جعفر, نصر اصفهانی, مهدی,

Objectives Mental health acts have been developed in different countries to protect human and civil rights of people with psychiatric disorders. In Iran, although there are some scattered laws within the existing body of laws, there is no separate mental health act. The aim of the present project was to prepare a draft pertaining to the mental health act in the country. Methods The draft of th...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

during natural gas processing, water in natural gas may cause to hydrates formation in pipelines which may lead to serious damages to process equipments. given the problems raised by present of water in natural gas, glycol solvent uses to remove water.in contact of glycol with gas always an amount of btex and voc absorb along with water, which on glycol recovery process, these substances separa...

ژورنال: علوم آب و خاک 1997
اشرفی زاده, سیدرضا , لغوی, محمد ,

The effects of three levels of soil moisture content (8-10, 10-12 and 12-14% d.b.) and three levels of plowing depth (15, 20 and 25 cm) on draft, specific draft and drawbar power requirement of a 7-shank chisel plow in a clay loam soil were investigated. The experimental design was a randomized complete block design with a 3×4 factorial. The effect of plowing depth on all of the parameters ment...

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