نتایج جستجو برای: water

تعداد نتایج: 550729  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بوعلی سینا - دانشکده علوم کشاورزی 1386

چکیده ندارد.

Journal: :Organic & biomolecular chemistry 2010
Nobuyuki Mase Carlos F Barbas

We review recent developments and applications of aldolase-type organocatalytic direct transformations in aqueous media without addition of organic solvent.

Journal: :EMBO reports 1995
Robert G Bryant Mark A Johnson Peter J Rossky

The Water Sector Government Coordinating Council (GCC) is pleased to concur on the 2007 Water Sector-Specific Plan (SSP). This plan provides the overarching framework for integrating Water Sector critical infrastructure and key resource protection efforts into a unified program coordinated by the Department of Homeland Security (DHS). Through direct collaboration, the Water Sector Coordinating ...

Journal: :journal of agricultural science and technology 0
k. zarafshani department of agricultural extension and education, razi university, kermanshah, islamic republic of iran. m. saadvandi department of agricultural extension and education, college of agriculture, tarbiat-modares university, tehran, islamic republic of iran.

as an assessment method of the water resources, water poverty index (wpi) has become an available tool in water resources management. in particular, agricultural water poverty index (awpi) is an assessment tool for agricultural water in rural areas. during the past decades, mahidasht basin in kermanshah province has been declared by water policy makers as “forbidden” basin in terms of water exp...

Journal: :iranian journal of science and technology transactions of mechanical engineering 2015
h. tabaei m. ameri

the increase of cell temperature with increased irradiance is probably the mostsignificant disadvantage of using photovoltaic modules equipped with booster reflectors. the aimof this study is to investigate the possibility of improving the performance of a photovoltaic waterpumping system by using a booster reflector and to keep the temperature of pv panels at a lowlevel by cooling pv panels wi...

Journal: :journal of agricultural science and technology 2015
l. izadi najafabadi n. hamdami a. le-bail j. y. monteau j. keramat

the mode of heat and mass transfer during baking of bakery products is an important factor determining the quality of the final product. the heating rate could alter the starch properties during gelatinization and affect the quality of products after baking and during aging. sangak is a kind of iranian flat bread baked on the hot pebble gravels. the aim of this study was to evaluate the impacts...

Journal: :journal of agricultural science and technology 2015
m. saeidi m. abdoli

terminal drought stress during grain filling period has recently become more common in the semiarid mediterranean regions, where wheat (triticum aestivum) is grown as an important winter cereal crop. the objective of this experiment was to study the effect of terminal drought stress on grain yield, gas exchange variables, and some physiological traits of nine bread wheat cultivars. an experimen...

Journal: :The journal of physical chemistry. B 2014
Cheng-Wen Liu Feng Wang Lijiang Yang Xin-Zheng Li Wei-Jun Zheng Yi Qin Gao

How salts affect water structure is an important topic in many research fields. Salt-water clusters can be used as model systems to extract interaction information that is difficult to obtain directly from bulk solutions. In the present study, integrated tempering sampling molecular dynamics (MD) are combined with quantum mechanics (QM) calculations to overcome the sampling problem in cluster s...

Journal: :بهداشت و توسعه 0
منصوره دهقانی استادیار، گروه مهندسی بهداشت محیط، دانشکده بهداشت و تغذیه، دانشگاه علوم پزشکی شیراز، شیراز، ایران محمد دوله کارشناس ارشد مهندسی محیط زیست، دانشگاه آزاد اسلامی بندرعباس، بندرعباس، ایران حسن هاشمی مربی، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی شهرکرد، شهرکرد، ایران نرگس شمس الدینی دانشجوی کارشناس ارشد، گروه مهندسی بهداشت محیط، دانشکده بهداشت و تغذیه، دانشگاه علوم پزشکی شیراز، شیراز، ایران mansoureh deghani assistant professor, department of environment health engineering, school of health and nutrition, shiraz university of medical sciences, shiraz ,iran mohammad doleh master of environment engineering, islamic azad university, bandar abbas branch, bandar abbas, iran

background: desalination plants have an important role in providing community drinking water. the increasing trend of water consumption and decrease of natural resources of fresh water make this role even more important. the aim of this study was to evaluate the quality of inlet and outlet water of desalination plants by reverse osmosis (ro) process in qeshm, iran and also to compare the qualit...

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