نتایج جستجو برای: water wells

تعداد نتایج: 560243  

2013
Hiroshi Sakai Yatsuka Kataoka Kensuke Fukushi

Myanmar is one of the least developed countries in the world, and very little information is available regarding the nation's water quality. This report gives an overview of the current situation in the country, presenting the results of various water-quality assessments in urban areas of Myanmar. River, dam, lake, and well water sources were examined and found to be of generally good quality. ...

Ali Almasi, Ali Jamshidi Rasool Momenzadeh Razieh Yazdizadeh Rouhollah Shokri, Shima Rezaei,

Nitrate has been the most common chemical contaminant in water resource. This ion is introduced into the water via different ways, but more items of nitrate pollution was connected with farming-based drainage and sewage effluent. In this descriptive-analytical study, groundwater nitrate and nitrite concentrations of 8 wells on Dehloran, Ilam, Iran, were analyzed in 2015 to determine the causes ...

Journal: :Pediatrics 2009
Walter J Rogan Michael T Brady

Drinking water for approximately one sixth of US households is obtained from private wells. These wells can become contaminated by pollutant chemicals or pathogenic organisms, leading to significant illness. Although the US Environmental Protection Agency and all states offer guidance for construction, maintenance, and testing of private wells, there is little regulation, and with few exception...

Background and Objective: Water corrosion leads to increase in toxic metals concentration, such as arsenic, copper, lead, cadmium, zinc, nickel, iron and manganese in water. Toxic metals in water consumers cause acute health risks. Scaling water leads to economic and technical problems. Thus, The aim of this study was to investigate the corrosion and scaling potential of wells drinking wate...

Journal: :journal of petroleum science and technology 0
liu jun school of civil engineering and architecture, southwest petroleum university, chengdu 610500, china wang wei school of civil engineering and architecture, southwest petroleum university, chengdu 610500, china zhang jian zhong drilling technology research institute of jidong oil field company, hebei, 063000, china xiao guo hua drilling technology research institute of jidong oil field company, hebei, 063000, china

according to the temperature distribution of water injection well-bore in highly deviated wells under different conditions and unstable temperature field heat conduction principles, a true three-dimensional model was established to analyze the law of variation on temperature of highly deviated wells during the water injection process, and to analyze the factors that influence the water injectio...

ژورنال: سلامت و محیط زیست 2019

Background and Objective: Scaling and corrosion both are destructive to materials (usually metals) in water supply systems. A dataset (from 2002 to 2013) of groundwater resources (including springs, qanats, deep wells and semi-deep wells) were examined for water tendency to corrosion or scaling in rural regions of Kashan, a city in Isfahan, central Iran. Materials and Methods: Water quality pa...

According to the temperature distribution of water injection well-bore in highly deviated wells under different conditions and unstable temperature field heat conduction principles, a true three-dimensional model was established to analyze the law of variation on temperature of highly deviated wells during the water injection process, and to analyze the factors that influence the water injectio...

2012
Rosa Cidu Riccardo Biddau

Nitrate in surface (187 samples) and ground (126 samples) waters collected in Sardinia (Italy) shows a large range of concentrations: from <1 to 249 mg/L. The highest median value of nitrate occurs in groundwater samples, especially in shallow wells, and spring waters circulating in granite environments. In surface waters, nitrate generally increases as flow increases following intense precipit...

Journal: :iranian journal of radiation research 0
n. alirezazadeh national radiation protection department iranian nuclear regulatory authority tehran, iran h. garshasbi

background: measurement of back ground concentration of uranium in drinking water is very important for many reasons, specially, for human health. the uranium concentration in drinking water in many counties is a matter of concern for clinical and radioactive poisoning. materials and methods: the uranium concentration in drinking water is determined using laser flourimatric uranium analyzer. fo...

Background & aims: All around the world, underground water resources are a major part of supplying drinking water due to high quality, easy access, low cost and no need for complicated treatment. On the other hand, lack of proper management can transfer chemical pollutants through industrial and agricultural effluents. In this study, the chemical quality of rural drinking water supplies in Neys...

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