نتایج جستجو برای: water and wastewater analysis

تعداد نتایج: 17376218  

Journal: :تحقیقات نظام سلامت 0
محسن حیدری دانشجوی دکتری مهندسی بهداشت محیط، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان و کارشناس ارشد مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران. علیرضا مصداقی نیا استاد، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران. محمدباقر میران زاده دانشیار، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی کاشان، کاشان، ایران. مسعود یونسیان دانشیار، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران. کاظم ندافی دانشیار، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران. امیرحسین محوی دانشیار، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران.

background: the objective of the study is examining the microbial quality of drinking water in kashan’s villages, and determining the usage of safe water in rural population in terms of microbial quality in the second-half 2007. also the role of kashan rural water and wastewater company (krwwc) in improving drinking water quality in kashan rural areas was investigated. methods: in this descript...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور 1388

چکیده ندارد.

Khamisabadi, Afsaneh, Nasrabadi, Mahnaz, Parvanak, Kamran,

Background & objective: Microbial contamination is one of the main concerns about the use of treated wastewater in irrigation. Therefore, the present study conducted to investigate the effect of treated wastewater on microbial contamination of urban landscape soils in Zahedan. Material & methods: In this study, a 1600 m2 plot of palm trees in Zahedan were irrigated with treated wastewater and o...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت معلم تهران 1381

‏‎the purpose of the present study was to investigate the latent pattern underlying reading ability . some 272 male and female participants. english majors at the ba level , participated in the study. two valid tests were used in this study, the reading test developed exclusively for the purpose of this project and academic reading section of ielts. to investigate the possible latent underlying...

Journal: :محیط شناسی 0
اصغر اصغری مقدم نینا محمودی

maragheh-bonab active cultivated plain is located in south east of east azarbaijan and consists of valuable groundwater resources. maragheh industrial park is nearly located in the recharge area of this plain. kaveh soda and paper mill factories that are located in this park produce high volume of wastewater is continually recharged in the plain. in this article, the effect of industrial wastew...

Journal: :تحقیقات نظام سلامت 0
اصغر ابراهیمی مربی، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی یزد، یزد، ایران. محمد مهدی امین استادیار، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران حسن هاشمی عضو هیأت علمی گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی شهرکرد، شهرکرد، ایران. رضا فولادی فرد کارشناس ارشد، گروه عمران محیط زیست، دانشکده فنی، دانشگاه تهران، تهران، ایران. مرضیه وحید دستجردی کارشناس ارشد، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران.

background: groundwater resources in arid and semi arid regions are very important. groundwater is contaminated by agricultural, industrial and municipal activity which as a result reduces its quality. investigating of the chemical quality of the groundwater is emphasized to identify pollutant environmental impacts associated with incorrect waste disposal practice. this research investigated th...

امرایی, لیلا, رحیمی, قاسم, کیمیایی طلب, علیرضا ,

Limited water resources in arid and semi-arid regions are one of the major limiting factors in agricultural production. Thus, unconventional water resources, such as urban and industrial treated wastewater, may be used for irrigation. Application of wastewater to soil may cause accumulation of heavy metals (HMs). Soil pollution causes uptake of these metals by plants and their entrance to food ...

Journal: :iranian journal of environmental sciences 0
mina arast department of geography and eco-tourism, faculty of natural resources and earth sciences, university of kashan, kashan, iran gholamreza zehtabian department of arid and mountainous regions reclamation, faculty of natural resources, university of tehran, iran mohammad jafari department of arid and mountainous regions reclamation, faculty of natural resources, university of tehran, iran hassan khosravi department of arid and mountainous regions reclamation, faculty of natural resources, university of tehran, iran bahareh jabalbarezi department of arid and mountainous regions reclamation, faculty of natural resources, university of tehran, iran

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...

Journal: :journal of membrane science and research 0
mohammad mahdi a. shirazi membrane industry development institute, tehran, iran ali kargari membrane processes research laboratory (mprl), department of chemical engineering, amirkabir university of technology (tehran polytechnic), tehran, iran

the growing scarcity of fresh water is driving the implementation of wastewater treatment and water reuse on an increasingly large scale. various methods have been developed and used for water reuse from wastewater; however, the membrane distillation (md) process, as a promising separation technology, has recently gained more attention. the md process is a non-isothermal membrane-based separati...

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