نتایج جستجو برای: water network

تعداد نتایج: 1204521  

بدیعی نژاد, احمد, حیدری, محمد رضا, فرزادکیا, مهدی,

Abstract Background and Objectives: Scaling and corrosion is one of the most important index in water quality evaluation. The objective of this study was to determine the corrosion and scaling potential of drinking water network in south of Shiraz city, Iran. Materials and Methods: In this cross-sectional study, this network was divided into 9 sections and, regularly 3 samples from each s...

Journal: :health scope 0
alireza shakeri abdolmaleki department of water engineering, faculty of soil and water, university of zabol, zabol, ir iran ahmad gholamalizadeh ahangar department of soil sciences, faculty of soil and water, university of zabol, zabol, ir iran; department of soil sciences, faculty of soil and water, university of zabol, zabol, ir iran. tel: +98-542 2240748, fax: +98-542 2232501 jaber soltani department of water engineering, abureyhan campus, university of tehran,tehran, ir iran

conclusions as we can see the ann outputs values are very close to actual cu concentration, so indicating that predicted values are accurate and the network design is proper and the input variables well suitable for the prediction of cu concentration. background access to safe drinking water is one of the basic human rights and essential for healthy life. concerns about the effects of copper on...

Arash Mahjobi, Kazem Torfi Mohammad Albaji

Koot - Hamoodi are two units from seventh units out of 1&2 irrigation and drainage network in Dasht-Azadeghan project where was past about 7 years from their operation. Results of the studies were showed before construction of network; ground water table in considered of this area was high and more than 90% of these lands were high and too high in saline and alkaline. After construction and ope...

Journal: :IOP Conference Series: Earth and Environmental Science 2019

Journal: :journal of chemical and petroleum engineering 2015
hajir karimi sadra azizi

in this study, a three–layer artificial neural network (ann) model was developed to predict the pressure gradient in horizontal liquid–liquid separated flow. a total of 455 data points were collected from 13 data sources to develop the ann model. superficial velocities, viscosity ratio and density ratio of oil to water, and roughness and inner diameter of pipe were used as input parameters of t...

Journal: :international journal of agricultural science and research 2011
h. abbasi z. emam-djomeh s. m. seyedin

farinograph is the most frequently used equipment for empirical rheological measurements of dough. it’suseful to illustrate quality of flour, behavior of dough during mechanical handling and texturalcharacteristics of finished products. the percentage of water absorption and the development time of doughare the most important parameters of farinography for bakery industries during production. h...

Journal: :محیط شناسی 0
علی اکبر عنابستانی استادیار گروه جغرافیای دانشگاه فردوسی مشهد محمد قربانی دانشیار گروه اقتصادکشاورزی دانشگاه فردوسی مشهد

nowadays, with population growth in urban areas, providing safe water and health is considered basic needs of human, alongside the various pollutants due to urban activities, agriculture and industrial areas on adjacent ranges into urban water resources around the environment is such that study necessary to prevent the pollution of water resources and identification of pollution sources shows. ...

شریف‌زاده, غلامرضا, شهریاری, طاهر, معاشری, بی‌بی نرگس,

  Background and Aim: In areas with low amounts of rainfall such as Iran, it is very important to avoid contamination of groundwater resources. One of the major causes of water pollution is excessive amounts of heavy metals that may induce various diseases and even cancer. This study was aimed to determine the concentrations of chromium and copper in the in the ground water and drinking water n...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

during natural gas processing, water in natural gas may cause to hydrates formation in pipelines which may lead to serious damages to process equipments. given the problems raised by present of water in natural gas, glycol solvent uses to remove water.in contact of glycol with gas always an amount of btex and voc absorb along with water, which on glycol recovery process, these substances separa...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت معلم تهران - دانشکده علوم 1370

determination of uranium in natural water and complex solutions using ion exchange chromatography: a combined procedure using ion exchange chromatography and uv-vis spectrophotometry techniques has been developed to measure uranum in natural water and complex solutions. after conditicing , one hundred milli liters of sample solutions have been passed through an ion exchange column,pachked with ...

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