نتایج جستجو برای: water distribution systems

تعداد نتایج: 2200586  

Journal: :journal of basic research in medical sciences 0
heshmatollah nourmoradi department of environmental health engineering, school of health, ilam university of medical sciences, ilam, iran. seyed ahmad mirbagheri department of environmental engineering, school of energy and environment, tehran azad university, branch of sciences and researches, tehran, iran kambiz moradnejadi department of environmental engineering, school of energy and environment, tehran azad university, branch of sciences and researches, tehran, iran faroogh kazembeigi department of environmental health engineering, school of health, ilam university of medical sciences, ilam, iran mashallah shamsizad department of environmental engineering, school of energy and environment, tehran azad university, branch of sciences and researches, tehran, iran

introduction: corrosion and scaling of water in distribution systems in spite of imposing economic and aesthetic problems can lead to adverse effects on consumers' health. the present study was conducted to evaluate the corrosion and scaling of water distribution system of sarableh city (ilam, iran) during summer and winter seasons in 2014. materials and methods: totally, 60 samples of wat...

Journal: :international journal of civil engineering 0
k. behzadian environmental research center, amirkabir university of technology, 424, hafez ave.-p.o. box: 15875-4413- tehran, iran m. alimohammadnejad environmental research center, amirkabir university of technology, 424, hafez ave.-p.o. box: 15875-4413- tehran, iran a. ardeshir environmental research center, amirkabir university of technology, 424, hafez ave.-p.o. box: 15875-4413- tehran, iran h. vasheghani executing manager of karaj urban and suburban railway organization , karaj, tehran, iran f. jalilsani department of mechanical engineering, amirkabir

compared to conventional chlorination methods which apply chlorine at water treatment plant, booster chlorination has almost solved the problems of high dosages of chlorine residuals near water sources and lack of chlorine residuals in the remote points of a water distribution system (wds). however, control of trihalomethane (thm) formation as a potentially carcinogenic disinfection by-product ...

The lack of water resources in Iran has increased concern about water consumption in the country. The agricultural sector is known as the largest sector of water consumption, and saving in this sector will save significant water resources. One of the solutions for the optimal use of water resources is the use of modern irrigation methods with proper design and implementation. Therefore, the pur...

Journal: :تحقیقات مهندسی کشاورزی 0
حمیدرضا سالمی استادیار بخش تحقیقات فنی و مهندسی کشاورزی مرکز تحقیقات کشاورزی و منابع طبیعی استان اصفهان

administrative regulations for water flow decrease distribution efficiency and effect the economical operation of irrigation networks. complications in distribution systems and the decrease in availability of water require study of the hydraulic performance of existing flow control structures. control systems designed by neyrpic (zayandeh rud network) and usbr (doroodzan network) were investiga...

Journal: :journal of agricultural science and technology 2014
h. m. al-ghobari

system evaluations were performed on 48 center pivots in different parts of saudi arabia. these systems, located on different farms in four different regions of the country, namely: riyadh, jouf, qassim and eastern regions, were evaluated to study the effect of lateral configuration on water application uniformity as regards the original vs. modified laterals. lateral configuration modification...

Journal: :health scope 0
hosein kamani health promotion research center, zahedan university of medical sciences, ir iran; department of environmental health engineering, school of public health, tehran university of medical sciences, tehran, ir iran mohammad malakootian environmental health research center and environmental health engineering department, school of public health, kerman university of medical sciences, ir iran mohammad hoseini department of environmental health engineering, school of public health, tehran university of medical sciences, tehran, ir iran; department of environmental health engineering, school of public health, tehran university of medical sciences, tehran, ir iran. tel: +9821-22909114, fax: +9821-88954914 jalil jaafari department of environmental health engineering, school of public health, tehran university of medical sciences, tehran, ir iran

background the non-revenue water refers to a difference between the volume of water entering the system and billed authorized consumption. objectives the main purpose of this study is to determine the volume of non-revenue water in order to recognize the factors influencing water losses so that the information gathered can used in non-revenue water reduction management. materials and methods ka...

Journal: :آب و خاک 0
کوروش مجد سلیمی سید بابک صلواتیان ابراهیم امیری

introduction: designing and management of sprinkler irrigation systems depend on the situation and location of its implementation and often rely on professional and long-term tests (9). having a good irrigation system depends on knowledge of the relationship between soil, water, plants, irrigation scheduling, the required amount of irrigation water to the water-holding capacity of soil, climate...

Journal: :مدیریت آب و آبیاری 0
عبدالصمد کاغذلو دانشجوی کارشناسی ارشد گروه مهندسی آبیاری و زهکشی، دانشگاه بین المللی امام خمینی(ره)، قزوین عباس ستوده نیا دانشیار دانشگاه بین المللی امام خمینی(ره)، قزوین پیمان دانش کار آراسته دانشیار دانشگاه بین المللی امام خمینی(ره)، قزوین

evaluating the performance of irrigation systems by providing the possibility of increasing irrigation efficiency in those systems is an important factor in the field of water resources management. in this study, the performance of three systems were evaluated, including linear move sprinkler irrigation systems in maize, sugar beet and alfalfa fields of magsal agro-industrial company which is l...

Akbarpour , A., Khorashadizadeh, S., Majidi Khalilabad, N., Mollazadeh, M.,

Leakage detection in water distribution systems play an important role in storage and management of water resources. Therefore, to reduce water loss in these systems, a method should be introduced that reacts rapidly to such events and determines their occurrence time and location with the least possible error. In this study, in order to determine position and amount of leakage in distribution ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید