نتایج جستجو برای: investigating water quality

تعداد نتایج: 1342483  

2009
Kristin K. Gardner Brian L. McGlynn

[1] In recent decades, the RockyMountainWest has been one of the fastest growing regions in the United States. Headwater streams in mountain environments may be particularly susceptible to nitrogen enrichment from residential and resort development. We utilized stream water chemistry from six synoptic sampling campaigns combined with land use/land cover (LULC) and terrain analysis in geostatist...

2015
W. J. Shepherd

As part of the revised EU Bathing Water Directive, there is scope to discount bathing water quality samples which show poor water quality if poor water quality is predicted and the public forewarned. The Cloud to Coast (C2C) project is developing a model to allow prediction of faecal indicator organism (FIO) concentrations in bathing waters. One of the C2C sub-models is investigating FIO loads ...

Journal: :Journal of water and health 2004
Stephen Gundry Jim Wright Ronan Conroy

In developing countries, the microbial contamination of household drinking water is implicated in the prevalence of various diseases. This systematic review is concerned with two health outcomes, general diarrhoea and cholera, and their relationship with water quality at point-of-use. Observational studies investigating this relationship are reviewed, as well as studies of home water treatment ...

Journal: :تحقیقات آب و خاک ایران 0
منا گلابی دکتری، دانشگاه شهید چمران اهواز عبدعلی ناصری دانشیار، دانشگاه شهید چمران اهواز

the present study was conducted with the objective of investigating the feasibility of using drainage water mixed with water to irrigate sugarcane (saccharum officinarum) in khuzestan province. the investigation was conducted in research center of sugarcane in farming seasons of years 2008-2009. four salinity levels of irrigation water were selected (s1, s2, s3 and s4 respectively with salinite...

2015
BoonFei Tan Charmaine Ng Jean Pierre Nshimyimana Lay Leng Loh Karina Y.-H. Gin Janelle R. Thompson

Water quality is an emergent property of a complex system comprised of interacting microbial populations and introduced microbial and chemical contaminants. Studies leveraging next-generation sequencing (NGS) technologies are providing new insights into the ecology of microbially mediated processes that influence fresh water quality such as algal blooms, contaminant biodegradation, and pathogen...

1996
Larry G. Bundy Lynda Knobeloch Byron H. Shaw

residues is applied to the land, it undergoes numerous chemical, physical and biological reactions. In its nitrate form (NO3), it can move down through soil into groundwater. Nitrate can also be a factor in surface water quality problems. In sufficient concentrations, nitrate in drinking water can be toxic to infants. Scientists are also investigating possible links between nitrate and other lo...

Journal: :international archives of health sciences 0
miranzadeh m.b. hoseinidoost gh.r environment health engineering department, health faculty, kashan university of medical sciences, kashan, iran marzaleh m.a.

aims: bottled water is widely used in many countries and more than 100 different brands of bottled water are produced in iran. the aim of the present research was to assess the chemical compound of some iranian brands of bottled water and compare them with the mention information on their labels.     instrument & methods: this descriptive study was performed during march to december 2012 on the...

2015
Seungman Cha Douk Kang Benedict Tuffuor Gyuhong Lee Jungmyung Cho Jihye Chung Myongjin Kim Hoonsang Lee Jaeeun Lee Chunghyeon Oh Paul Tchounwou

Although a number of studies have been conducted to explore the effect of water quality improvement, the majority of them have focused mainly on point-of-use water treatment, and the studies investigating the effect of improved water supply have been based on observational or inadequately randomized trials. We report the results of a matched cluster randomized trial investigating the effect of ...

Journal: :آب و خاک 0
معصومه صالحی محمد کافی علیرضا کیانی

abstract in order to optimize the water management in agriculture in semi arid and arid conditions water-salinity function should be evaluated. in order to evaluate salinity and deficit irrigation two experiments were conducted in 2008 and 2009. kochia was grown with six levels of saline water (1.5, 7, 14, 21, 28, and 35 ds/m) and three levels of applied water (25, 75, and 125 percent of the wa...

Journal: :BMC Public Health 2007
Andrea G Mann Clarence C Tam Craig D Higgins Laura C Rodrigues

BACKGROUND Studies suggest that routine variations in public drinking water turbidity may be associated with endemic gastrointestinal illness. We systematically reviewed the literature on this topic. METHODS We searched databases and websites for relevant studies in industrialized countries. Studies investigating the association between temporal variations in drinking water turbidity and inci...

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