نتایج جستجو برای: water environment
تعداد نتایج: 1033333 فیلتر نتایج به سال:
pharmaceuticals are considered to be important environmental contaminants. the aim of this study was to evaluate their presence in water intended for public supply to municipally of rio de janeiro, brazil. the regional environmental assessment was done from the analysis of surface water and distribution for the presence of psychiatric drugs. the study reveals the presence of benzodiazepine deri...
apart from other aspects, desert is a natural environment and is one of the appealing terrestrial elements. putting its symbolic and fictional senses aside, the term “desert” bears mystic sense more than material sense. in addition to the worlds materialistic experiences, desert has attracted the attention of writers because it creates a kind of inner experience, which returns the individual in...
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. ...
The purpose of this research is to demonstrate the influence that a water dome has on a person. The following approach was used for this study: ( I ) A water display was used as a projection screen; ( 2 ) The illusion of being under water was created; and (3) Experiments with water domes of various sizes were carried out. Water display is a head mounted type water membrane. When the display is ...
AIMS To estimate the prevalence of trachoma in preschool children in Sarlahi district, Nepal, and to identify risk factors for the disease. METHODS A stratified random sample of 40 wards was selected for participation in a trachoma survey. Within each ward, a systematic 20% sample of children 24-76 months of age was chosen to determine the presence and severity of trachoma using the World Hea...
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