نتایج جستجو برای: water network

تعداد نتایج: 1204521  

Journal: :international journal of optimaization in civil engineering 0
r. mansouri m. mohamadizadeh

for any agency dealing with the design of the water distribution network, an economic design will be an objective. in this research, central force optimization (cfo) and differential evolution (de) algorithm were used to optimize ismail abad water distribution network. optimization of the network has been evaluated by developing an optimization model based on cfo and de algorithm in matlab and ...

Journal: :آب و خاک 0
منتظر منتظر پاشازاده پاشازاده

abstract the main objective of this paper is to apply the canalman model in the performance assessing of different water operational scenarios in the west main canal of dez irrigation network. the proposed model was calibrated and validated based on the real data of march and april 2006. the real water operational condition during five months (may to september 2006) was simulated. for this peri...

Journal: :environmental health engineering and management 0
ali akbar mohammadi department of environmental health engineering, neyshabur university of medical sciences, neyshabur, iran mansour ghaderpoori department of environmental health engineering, faculty of health and nutrition, lorestan university of medical sciences, khorramabad, iran mahmood yousefi students research committee, neyshabur university of medical sciences, neyshabur, iran malihe rahmatipoor students research committee, neyshabur university of medical sciences, neyshabur, iran safoora javan students research committee, department of environmental health engineering, neyshabur university of medical sciences, neyshabur, iran

background: one issue of concern in water supply is the quality of water. measuring the qualitative parameters of water is time-consuming and costly. predicting these parameters using various models leads to a reduction in related expenses and the presentation of overall and comprehensive statistics for water resource management. methods: the present study used an artificial neural network (ann...

Journal: :iranian journal of environmental sciences 0
amir soltani mohammadi irrigation and drainage department, faculty of water sciences engineering, shahid chamran university, ahvaz, iran atefeh sayadi shahraki irrigation and drainage department, faculty of water sciences engineering, shahid chamran university, ahvaz, iran abd ali naseri irrigation and drainage department, faculty of water sciences engineering, shahid chamran university, ahvaz, iran

one of the main aims of water resource planners and managers is to estimate and predict the parameters of groundwater quality so that they can make managerial decisions. in this regard, there have many models developed, proposing better management in order to maintain water quality. most of these models require input parameters that are either hardly available or time-consuming and expensive to...

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...

A. Kaveh, R. Sheikholeslami ,

The main functional purpose of a water distribution network is to transport water from a source to several domestic and industrial units while at the same time satisfying various requirements on hydraulic response. All the water distribution networks perform two basic operations: firstly the water network needs to deliver adequate amounts of water to meet specific requirements, and secondly the...

مجلسی, منیره, رضازاده آذری, منصور, لیلی, مصطفی, مسعودی نژاد , محمد رضا , یزدانبخش, احمد رضا,

Background and purpose: Chloroform is a disinfection byproducts (DBPs) that results from reactions between residual chlorine and organic compounds as precursors. The presence of these DBPs in chlorinated drinking water can pose a severe public health threat including potential carcinogenicity. In this study chloroform concentrations as an indicator of DBPs of chlorinated water was evaluated in ...

 Background and purpose: Household drinking water treatment devices are becoming commonplace to improve the quality of drinking water, remove odor, taste, turbidity and color, pathogenic organisms, toxic chemicals, organic matter, and carcinogenic pollutants. This study aimed at investigating the Heterotrophic plate count (HPC) in drinking water and possibility of biofilm formation in household...

In this study, a new configuration of heat pipes as Heat Pipe Network is introduced. Here, the heat pipe network is designed, constructed and then has been under the performance assessment. This heat pipe network consists of 4 vertical heat pipes connected to evaporator collector from bottom and condenser collector from top. In order to investigate the effect of nanofluids on the thermal effici...

ژورنال: علوم آب و خاک 2018

The irrigation and drainage network of Zarrinehroud with an area of 65,000 hectares is the most important network of Lake Urmia basin, with the direct link to the lake. With the current crisis in the lake, an assessment of the existing network's performance is essential in the Urmia Lake Rescue Program. The purpose of this study was, therefore, to evaluate the transmission, distribution, and ut...

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