نتایج جستجو برای: 2013 irrigation method in first model was surface irrigation

تعداد نتایج: 17848108  

2014
Dong Hwan Kim Hwan Soo Kim Hyuk Jin Choi In Ho Han Won Ho Cho Kyoung Hyup Nam

OBJECTIVE Although standard method has not been established for the chronic subdural hematoma (CSDH), burr-hole trephination and closed system drainage with or without irrigation has been widely accepted as the treatment of choice. The aim of this study is to analysis the post-operative recurrence rates after burr-hole trephination of the CSDH according to the conduction of irrigation. METHOD...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1391

the ability of composing a coherent and extended piece of writing in second language is considered as a fundamental factor to convey information and ideas of learners through the academic issues. although learners may achieve a perfect academic writing skill through assigning the l2 tasks in content based instruction, but demonstration of their abilities may be related to their ability in l1 es...

A.A. Kamgar-Haghighi A.R. Sepaskhah, M. Amini-Nejad

Better irrigation management and more efficient management of crop production require modeling of plant growth and crop yield. More applicable models are usually simple and requires less and accessible inputs. The objective of this study was to develop a model for growth and yield prediction of saffron under various irrigation regimes. In this modeling soil water budget and other simple rel...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه پلیمر و پتروشیمی ایران - پژوهشکده پتروشیمی 1389

this is an original study on the effect of a polyisobutylene – polydimethylsiloxane (pibpdms) block copolymer modifier used as an interfacial active agent on the dynamics behaviour of single newtonian drops suspended in a polyisobutylene (pib) newtonian matrix. the results were divided in two sections. the first part included the experiments carried out on the non-modified and 2% block cop...

2017
Lily R. Mundy Mark J. Gage Richard S. Yoon Frank A. Liporace

BACKGROUND The need for reoperation or wound infection treatments between pulsatile and gravity irrigation are statistically equivalent, however, it is unclear which method maximizes operative efficiency and expeditious irrigation. In this study we set out to determine the differences in irrigation rate between these various treatment methods. METHODS This was an ex-vivo experimental laborato...

2017
Panpan Zhang Geng Ma Chenyang Wang Hongfang Lu Shasha Li Yingxin Xie Dongyun Ma Yunji Zhu Tiancai Guo

Water management and nitrogen application are critical factors in wheat grain yield and protein quality. This study aimed to evaluate the effect of irrigation and nitrogen application on the grain yield, protein content and amino acid composition of winter wheat. Field experiments were conducted in a split-plot design with three replications in high-yielding land on the North China Plain in 201...

Journal: :تحقیقات مهندسی کشاورزی 0
محمدکاظم شعبانی دانشجوی سابق کارشناسی ارشد تورج هنر استادیاربخش مهندسی آب دانشکده کشاورزی دانشگاه شیراز علیرضا سپاسخواه استاد بخش مهندسی آب دانشکده کشاورزی دانشگاه شیراز

in recognition of the value and limitations of available water resources in agriculture and the occurrence of periodic drought in iran, water conservation and optimal usage of available water is essential. the main objective of this study was to optimize field water management and cropping patterns using deficit irrigation. the effect of reducing water consumption on different growth stages usi...

Journal: :iran agricultural research 2015
a.m. hassanli sh. ahmadirad s. beecham

abstract- a detailed understanding of crop rooting systems will facilitate water use reduction, optimized nutrient uptake and irrigation scheduling more efficiently. a field experiment was conducted during 2005-2006 to investigate sugar beet rooting depth growth, irrigated with three irrigation methods (subsurface drip, surface drip and furrow) and two water qualities (recycled wastewater: ec= ...

Journal: :مدیریت آب و آبیاری 0
زینب حیدری دانشجوی کارشناسی ارشد آبیاری و زهکشی، دانشکدۀ کشاورزی دانشگاه رازی، کرمانشاه، ایران معصومه فراستی استادیار گروه مهندسی آب، دانشکدۀ کشاورزی دانشگاه رازی، کرمانشاه، ایران , استادیار دانشکدۀ کشاورزی، دانشگاه گنبدکاووس، گنبد، ایران رسول قبادیان دانشیار گروه مهندسی آب، دانشکدۀ کشاورزی دانشگاه رازی، کرمانشاه، ایران

in this study, effect of slope on soil wetting pattern under surface drip irrigation and simulation with hydrus-2d model evaluated.the physical model made of plexiglas to size 83, 6 and 54 cm (length, width, height) filled with silty clay loam soil was used. to achieve the desired discharge, a small drip irrigation system created that includes a water tank with a fixed height (about 2 meters), ...

Journal: :پژوهش های کاربردی زراعی (زراعت سابق) 0
مهدی سرائی تبریزی دانشجوی دکتری آبیاری و زهکشی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران، گروه مهندسی آب، تهران، ایران مسعود پارسی نژاد دانشیار گروه مهندسی آبیاری و آبادانی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج حسین بابازاده استادیار دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران، گروه مهندسی آب، تهران

present limitations on available water resources especially for use in agriculture sector, shows that more attention to irrigation water management is inevitable. deficit irrigation is a practice to improve use of unit volume of water. in this research, efficacy of cropwat 8.0 model was evaluated against field data under deficit irrigation management on soybean in karaj. in 2008 and 2009 agrono...

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