نتایج جستجو برای: tds and ec therefore

تعداد نتایج: 16835441  

Journal: :Journal of applied science and environmental management 2023

The impact of Geology on groundwater is not fully appreciated in many Nigerian quality literature. This study investigates the influence hydrogeochemical makeup Igarra and environs, Nigeria. environs underlain by metasediments intruded Pan African Granites. Ten water samples were collected analyzed laboratory to determine their chemical composition. results revealed that pH most was slightly ac...

در سال­های اخیر، منابع آب زیرزمینی استان گیلان در آبیاری مزارع برنج نقش مهمی داشته اند. هدف این پژوهش، بررسی تغییرات مکانی و زمانی هدایت الکتریکی (EC) و کل جامدات محلول (TDS) آب زیرزمینی دشت گیلان در یک دوره آماری چهار ساله با استفاده از روش­ کریجینگ معمولی است. در این رابطه، نمونه­برداری از آب 130 حلقه چاه شبکه­ پایش آب­های زیرزمینی استان گیلان، در ماه شهریور سال­های 1382 تا 1385 انجام شد. نقش...

Journal: :iranian journal of health sciences 0
babak djahed department of environmental health engineering, school of public health, iranshahr university of medical sciences, mohammad reza narooie department of environmental health engineering, school of public health, iranshahr university of medical sciences, seyed ali kazeminejad department of civil and environmental engineering, school of engineering, university of texas, arlington, usa esmaeel shahsavani department of environmental health engineering, school of public health, shiraz university of medical sciences, edris bazrafshan department of environmental health engineering, school of health, health promotion research center, zahedan

background and purpose: today, by increasing different pollutants, the continuous monitoring of surface waters is essential. dorudzan dam is one of the main sources of surface water in fars province, iran; hence, the current study investigated the quality  of dorudzan reservoir for drinking and irrigation consumptions. materials and methods: in this study, various physicochemical parameters [ph...

Journal: :iranian journal of environmental sciences 0
ali vosoogh phd candidate in civil-water engineering, iran university of science & technology, iran akbar baghvand associate professor, faculty of environment, university of tehran, iran hatef saghakhaneh msc. student of civil engineering-environment, aras international campus, university of tehran, iran

groundwater makes up an important part of global freshwater resources, though it is often threatened by overuse of natural resources along with abundant production of wastes in modern society. this study aims to investigate the removal of three heavy metals including nickel, cadmium, and lead from groundwater via electrocoagulation, a suitable method for treatment of water-soluble compounds, de...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی شاهرود - دانشکده معدن و ژئوفیزیک 1389

برداشت های ژئوالکتریک یا مقاومت ویژه در منطقه خرمالو، واقع در استان گلستان، به منظور تعیین گسترش جانبی و عمقی سازندهای آبدار اجرا شده است. پارامترهای کیفی آب مانند tds و ec نیز از چاه های آب موجود در منطقه مذکور تعیین شده اند. هدف از این بررسی های مقاومت ویژه در این پایان نامه، تشخیص آبخوان های زیرزمینی منطقه و نیز به دست آوردن رابطه ای (خطی) بین پارامترهای ژئوالکتریکی و هیدروژئولوژیکی در منطقه...

Journal: :Sustainability 2021

Water pollution is an increasing global issue that societies are facing and threating human health, ecosystem functions agriculture production. The distinguished features of artificial intelligence (AI) based modeling can deliver a deep insight pertaining to rising water quality concerns. current study investigates the predictive performance gene expression programming (GEP), neural network (AN...

Journal: :The Journal of the Acoustical Society of America 1980

پایان نامه :0 1371

the treatment of in completely formed pulpless teeth has presented considrable problems. these teeth have wide open apexes and the walls of the root canal diverge toward the apical tissues. mechanical preparation cannot be done in the normal manner beacause of the large initial size and the taper of apical part of the canal , a mechanical stop cannot be produced at the apex of the canal and , t...

Journal: :International journal of economic and environment geology 2022

Groundwater quality of taluka Chachro was investigated by analyzing thirty-two groundwater samples for drinking purpose. Multivariate statistical approaches with GIS interpolations (IDW) were applied the identification significant geochemical processes governing quality.. Results showed concentrations physiochemical parameter in study area exceeded prescribed level WHO guidelines. The EC and TD...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شاهد - دانشکده هنر 1391

now-a-days graphic design plays a major role in influencing culture, society, business, and customers, in such a way that one could look upon every individual as a potential customer. graphic designers seek to identify customers needs and find an intelligent solution for them. correct identification and understanding of those needs is the first step towards achieving ones goals. marketing knowh...

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