نتایج جستجو برای: water sources

تعداد نتایج: 818490  

Journal: :novelty in biomedicine 0
maryam niyyati department of medical parasitology and mycology, school of medicine, shahid beheshti university of medical sciences, tehran, iran mahdieh nazar department of medical parasitology and mycology, school of medicine, shahid beheshti university of medical sciences, tehran, iran zohreh lasjerdi department of medical parasitology and mycology, school of medicine, shahid beheshti university of medical sciences, tehran, iran ali haghighi department of medical parasitology and mycology, school of medicine, shahid beheshti university of medical sciences, tehran, iran ehsan nazemalhosseini research center for gastroenterology and liver diseases, shahid beheshti university of medical sciences, tehran, iran

background: acanthamoeba spp. is the causative agent of blindness keratitis and fatal encephalaitis. presence of acanthamoeba spp. in a wide variety of niches such as different water types can lead to exposure of high risk people such as contact lens wearers. the main aim of the present study was to explore the occurrence of acanthamoeba genotypes in the recreational water sources using both mo...

Water is prime requirement for surviving of any living beings.  The existence of surface water and groundwater sources are used for domestic, agriculture and industrial purposes in all over the world. Fresh water from both the water sources is highly contaminated in recent years because of rapid population growth, modern agriculture and industrial growth. Among them, contamination of water sour...

Journal: :Revista de saude publica 2003
Luiz Augusto do Amaral Antonio Nader Filho Oswaldo Durival Rossi Junior Fernanda Lúcia Alves Ferreira Ludmilla Santana Soares Barros

OBJECTIVE To assess the sanitary quality of drinking water in rural farms through counts of microbiological indicators. METHODS A total of 180 drinking water samples from sources, reservoirs and water from site of consumption were collected in 30 rural farms located in the northeast region of the sate of São Paulo. The most probable number of total coliforms, Escherichia coli and mesophilic m...

2014
Robert Bain Ryan Cronk Jim Wright Hong Yang Tom Slaymaker Jamie Bartram

BACKGROUND Access to safe drinking-water is a fundamental requirement for good health and is also a human right. Global access to safe drinking-water is monitored by WHO and UNICEF using as an indicator "use of an improved source," which does not account for water quality measurements. Our objectives were to determine whether water from "improved" sources is less likely to contain fecal contami...

Journal: :Journal of environmental management 2009
Sara Dolnicar Andrea I Schäfer

Many countries' water resources are limited in both quantity and quality. While engineering solutions can now safely produce recycled and desalinated water from non-potable sources at a relatively low cost, the general public is sceptical about adopting these alternative water sources. Social scientists, policy makers and technical experts need to better understand what is causing this lack of ...

2013
Sajjad Haydar Muhammad Qasim

A study was carried out to evaluate the water quality of Sargodha city water supply system. Water samples from four different sources (1 tubewell and 3 surface water sources) and eight house connections (2 from each source respectively) were collected making a total of twelve sampling points. Two set of samples, one before monsoon and one after monsoon were collected from each sampling point. A...

Journal: :Journal of infection in developing countries 2015
Sita Malhotra Shailpreet K Sidhu Pushpa Devi

INTRODUCTION Safe water is a precondition for health and development and is a basic human right, yet it is still denied to hundreds of millions of people throughout the developing world. Water-related diseases caused by insufficient safe water supplies, coupled with poor sanitation and hygiene, cause 3.4 million deaths a year, mostly in children. METHODOLOGY The present study was conducted on...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1391

one of the most commonly used techniques to reduce the corrosion rate of rebar in concrete is addition substances named corrosion inhibitors into the concrete. corrosion inhibitor is chemical compounds that were added to concrete to prevent corrosion of steel in concrete. sodium nitrate is a type of anodic inhibitors that this study investigatesthe effect of this inhibitor on the properties of ...

2017
Joseph Hoover Melissa Gonzales Chris Shuey Yolanda Barney Johnnye Lewis

Regional water pollution and use of unregulated water sources can be an important mixed metals exposure pathway for rural populations located in areas with limited water infrastructure and an extensive mining history. Using censored data analysis and mapping techniques we analyzed the joint geospatial distribution of arsenic and uranium in unregulated water sources throughout the Navajo Nation,...

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