نتایج جستجو برای: sill ratio showed most affected by extrinsic variations long term irrigation with wastewater in spite of wastewater irrigation

تعداد نتایج: 25249388  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده مهندسی علوم آب 1393

drought is transient phenomenon , slow , repetitive and integral part of the climate of each region. drought begins with a substantial reduction in precipitation over the long-term average rainfall and over time, reduced soil moisture and surface and ground water resources will continue to decrease. this phenomenon is the most important in bakhtegan basin because of its importance in strategic ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده ادبیات و علوم انسانی 1390

this study intends to investigate samuel beckett’s waiting for godot and endgame under the lacanian psychoanalysis. it begins by explaining the most important concepts of lacanian psychoanalysis. the beckettian characters are studied regarding their state of unconscious, and not the state of consciousness as is common in most beckett studies. according to lacan, language plays the sole role in ...

Journal: :مدیریت خاک و تولید پایدار 0
سید حسن طباطبائی دانشگاه شهرکرد پیام نجفی دانشگاه خوراسگان هاجر طاهری دانشگاه

demand for water resources in different parts of the world, necessitate the use of wastewater. in using wastewater the soil health must be considered. this study was carried out at green space zob ahan in the years 1382 to 1385. in this study, the effects of urban and industrial wastewater irrigation on some chemical properties of soil for three years by using five different irrigation treatmen...

Journal: :تحقیقات مهندسی کشاورزی 0
علیرضا حسن اقلی عضو هیئت علمی (استادیار) مؤسسه تحقیقات فنی و مهندسی کشاورزی عبدالمجید لیاقت دانشیار دانشکده کشاورزی دانشگاه تهران. مهدی میراب زاده دانشیار دانشکده کشاورزی دانشگاه تهران.

because of water shortage in arid and semi-arid regions, reuse of wastewater and treated effluents for agricultural irrigation has become an essential matter now. while these kinds of water contain a lot of nutrients such as nitrogen, by using them we could be able to increase the soil fertility and decrease both the chemical nutrient consumption and the costs of agricultural production. howeve...

ژورنال: علوم آب و خاک 2010
گلوی, محمد , جلالی, عباس , رمرودی, محمود , قنبری, احمد, یوسف الهی, مصطفی ,

Using treated wastewater led to increasing crop yield, but it may causes heavy metals accumulations and also their toxicity in soil and plant. In order to investigate the effects of wastewater on yield, forage yield components, and heavy metals concentrations in stem and leaf of sorghum, an experiment was conducted in the agricultural Research Institute of Zabol University in 2006-2007, using a...

2004
C. A. Scott

Cities in developing countries are experiencing unparalleled growth and rapidly increasing water supply and sanitation coverage that will continue to release growing volumes of wastewater. In many developing countries, untreated or partially treated wastewater is used to irrigate the cities’ own food, fodder, and green spaces. Farmers have been using untreated wastewater for centuries, but grea...

2012
Philipp Dalkmann Melanie Broszat Christina Siebe Elisha Willaschek Tuerkan Sakinc Johannes Huebner Wulf Amelung Elisabeth Grohmann Jan Siemens

Irrigation with wastewater releases pharmaceuticals, pathogenic bacteria, and resistance genes, but little is known about the accumulation of these contaminants in the environment when wastewater is applied for decades. We sampled a chronosequence of soils that were variously irrigated with wastewater from zero up to 100 years in the Mezquital Valley, Mexico, and investigated the accumulation o...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده زبانهای خارجی 1389

the aim of the present study was to investigate the frequency and the type of discourse markers used in the argumentative and expository writings of iranian efl learners and the differences between these text features in the two essay genres. the study also aimed at examining the influence of the use of discourse markers on the participants’ writing quality. to this end the discourse markers us...

Population’s exponential growth along with drought has increased water resources limitation, especially in arid and semi-arid area. Therefore, the use of non-conventional water is an important tool for water resource management. If unconventional water has no negative impact on soil properties and water, it can be used for irrigation coupled with desertification projects. So, this paper tries t...

2017
Oskar A. Palacios Francisco J. Zavala-Díaz de la Serna María de Lourdes Ballinas-Casarrubias María S. Espino-Valdés Guadalupe V. Nevárez-Moorillón

Reclaimed wastewater for irrigation is an opportunity for recovery of this natural resource. In this study, microbial risk from the use of treated wastewater for irrigation of recreational parks in the city of Chihuahua, evaluating the effect of distribution distance, season, and presence of storage tanks, was analyzed. Escherichia coli, Salmonella, and multidrug-resistant bacteria were recover...

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