نتایج جستجو برای: total edge and largest patch index) influence water quality. indexes (including ec

تعداد نتایج: 17238218  

Journal: :محیط زیست طبیعی 0
فاطمه باطنی دانشجوی دکتری سیما فاخران اصفهانی هیات علمی گروه محیط زیست دانشکده منابع طبیعی دانشگاه صنعتی اصفهان علیرضا سفیانیان هیات علمی گروه محیط زیست دانشکده منابع طبیعی دانشگاه صنعتی اصفهان نوراله میرغفاری هیات علمی گروه محیط زیست دانشکده منابع طبیعی دانشگاه صنعتی اصفهان

landscape characteristics and land use patterns of watershed demonstrate extension, distribution, density and abundance of human interference. these factors can affect water quality of adjacent aquatic systems within a watershed. land use changes have caused various environmental problems for zayandehroud river,turned it as a sink of pollutant. therefore this is investigated that how would land...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - پژوهشکده مهندسی فرایند 1395

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

Vegetation in any landscape reflects its health condition. Monitoring land use change and land cover plays a key role in environmental planning and management. Mazandaran province has always been considered by tourists due to its high tourism potential and consequently the vegetation, especially the forest, has been damaged. In this study, vegetation Contiguity and integrity in Mazandaran using...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1392

gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1389

rivers and runoff have always been of interest to human beings. in order to make use of the proper water resources, human societies, industrial and agricultural centers, etc. have usually been established near rivers. as the time goes on, these societies developed, and therefore water resources were extracted more and more. consequently, conditions of water quality of the rivers experienced rap...

Journal: :jundishapur journal of health sciences 0
ghodratola khoramabadi shams department of environmental health, school of health, lorestan university of medical sciences, khorramabad, ir iran abdolrahim yusefzadeh young researchers and elite club, sardasht branch, islamic azad university, sardasht, ir iran; young researchers and elite club, sardasht branch islamic azad university, sardasht, ir iran. tel: +98-9143425434, fax: +98-4444375585 hatam godini department of environmental health, school of health, lorestan university of medical sciences, khorramabad, ir iran edris hoseinzadeh department of environmental health, faculty of medicine, tarbiat modares university (tmu), tehran, ir iran mohammad khoshgoftar vice-chancellery of health, shahroud university of medical sciences, shahroud, ir iran

conclusions according to the average of wqi index, quality of water was good in station number one, medium in station number two, and bad in the rest of stations. according to the wilcox index, qualities of water in third station were medium and in the rest were good. results by using wqi, the best water quality was reported in station number one with the scalar quantity of 71.11 (water with be...

Journal: :global journal of environmental science and management 2016
s. sharma r.c. chhipa

water is a unique natural resource among all sources available on earth. it plays an important role in economic development and the general well-being of the country. this study aimed at using the application of water quality index in evaluating the ground water quality innorth-east area of jaipur in pre and post monsoon for public usage. total eleven physico–chemical characteristics; total dis...

حسین زاده, ادریس, رحمانی, علیرضا, رحیمی, ناصر, عزتی, لیلا,

Background and purpose: Using Water Quality Indices are necessary for monitoring the quality of water in various applications, including agriculture. This study aimed to assess the quality of Takab Sarugh river right branch by WILCOX index. Materials and methods: In this cross sectional study some quality parameters including water temperature, sodium, calcium, magnesium, total hardness, pH, e...

ژورنال: علوم آب و خاک 2019

Determination of water quality is an essential issue in water resources management and its monitoring and zoning should be considered as an important principle in planning. In this study, in order to investigate the quality of groundwater resources (springs, wells and qanats) in Semnan watershed, first, the water quality index for drinking and agricultural purposes was obtained by means of meas...

G Azari Takami H Khara J Mesgaran Karimi, R Abbaspour

The aim of this study was to assess the influence of trout farm effluents on water quality parameters in the Dohezar Stream. In this study two trout farms and 7 stations were selected and physiochemical of water, including air and water temperatures, dissolved oxygen concentration (DO), pH, electrical conductivity (EC), water flow and biochemical oxygen demand (BOD) were measured every 30 days ...

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