نتایج جستجو برای: groundwater quality index

تعداد نتایج: 1132664  

ژورنال: علوم آب و خاک 2014
بیگی‌هرچگانی, حبیب‌الله, حشمتی, سیده سمیرا,

The aim of this study was to assess the drinking quality of Shahrekord aquifer based on a GWQI (groundwater quality index) within a GIS framework. To do this, samples from 97 wells were analyzed for pH, Electrical Conductance (EC), Total Dissolved Solids (TDS), Total Suspended Solids (TSS), Turbidity, Ca2+, Mg2+, Na+, K+, Cl-, HCO3- and SO42-, and total hardness was also calculated. These water...

2015
Xihua Wang Guangxin Zhang Yi Jun Xu Athanasios Loukas

Flooding’s impact on shallow groundwater is not well investigated. In this study, we analyzed changes in the depth and quality of a regional shallow aquifer in the 10.9 × 104 km2 Sanjiang Plain, Northeast China, following a large flood in the summer of 2013. Pre(2008–2012) and post-flood records on groundwater table depth and groundwater chemistry were gathered from 20 wells across the region. ...

Journal: :environmental resources research 0
ali m. rajabi school of geology, department of engineering geology, university of tehran, tehran, iran keyvan mokhtari regional water authority, markazi province, water resources offices of delijan, iran

this study was conducted to evaluate the quality of the groundwaters and the impact of geological units on these waters in hastijan area. for this purpose, 11 samples of water resources have been collected with their appropriate dispersal. physico-chemical parameters of mn, ni, cd, cu, zn, as fe, cr, and ions k+, na+,ca2+, mg2+, cl-, so42-, hco3- as well as indicators th, tds, ec, ph were deter...

Journal: :The Science of the total environment 2013
Ruopu Li James W Merchant

Modeling groundwater vulnerability to pollution is critical for implementing programs to protect groundwater quality. Most groundwater vulnerability modeling has been based on current hydrogeology and land use conditions. However, groundwater vulnerability is strongly dependent on factors such as depth-to-water, recharge and land use conditions that may change in response to future changes in c...

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...

Journal: :desert 0
gh.r. zehtabian professor, faculty of natural resources, university of tehran, karaj, iran h. mohammad asgari assistant professor, khoramshahr university of marine science and technology, khoramshahr, iran m. tahmoures ph.d. student, faculty of natural resources, university of tehran, karaj, iran

our main objective in the present study was to assess the spatial variation of chemical and physical water properties. prior to the design of groundwater quality monitoring networks, it is essential to investigate the spatial structure of the groundwater quality variables. a case study is presented which used ground water quality observations from groundwater domestic wells in the dameghan, ira...

Journal: :Iraqi geological journal 2021

Groundwater is an important resource that can be used for various purposes. Various factors change the chemistry of GW, such as chemical composition aquifer well leaching human waste into groundwater. The study area a barren land covered by some sabkhas, in addition to agricultural fields. aims assess groundwater quality drinking purposes using Water Quality Index. chemically heterogeneous and ...

2013
R. Seshadri

Water is a key resource in all economic activities ranging from agriculture to industry. Only a tiny fraction of the planet’s abundant water is available to us as fresh water. Assessment of water quality has always been paramount in the field of environmental quality management. It is the foundation for health, hygiene, progress and prosperity.With ever increasing pressure of human population, ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم بهزیستی و توانبخشی 1389

چکیده مقدمه : پژوهش حاضر با هدف ترجمه و تعیین پایایی و روایی نسخه فارسی پرسشنامه ژنریک " شاخص کیفیت زندگی"(quality of life index) برای اندازه گیری کیفیت زندگی در ایران طراحی و انجام شد. روش : پس از اخذ اجازه از طراحان پرسشنامه ، بر اساس روش توصیه شده forward-backward، پرسشنامه مذکور ترجمه و در مطالعه ای آزمایشی به کار برده شد و پس از اعمال تغییرات لازم، پرسشنامه نهایی در بین 130 نفر از دانش...

2002
V. E. A. Post H. Kooi

The groundwater quality of coastal areas is strongly influenced by changes in the hydrological boundary conditions, such as coastline configuration and climatic conditions. As groundwater quality patterns take a long time to adapt to the new boundary conditions, the effects of these changes can still be noticed today. For example, large amounts of saline groundwater are still found below areas ...

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