نتایج جستجو برای: water samples were analysed using standard laboratory methodsthe ew ph
تعداد نتایج: 6425894 فیلتر نتایج به سال:
The use of high performance liquid chromatography (HPLC) grade water is very important for laboratory studies, especially food quality control. These studies have a great impact on diagnosing food health. Food health improves the health of the community and these two parameters are closely related. HPLC grade water is ultra-pure water with low UV absorption ability. This water is often purified...
بررسی ارزش غذایی تاغ و عمل آوری آن با سود و آهک در مراحل مختلف رشدبا استفاده از روش کیسه های نایلونی
abstract this study is carried out to determine the chemical composition in the three vegetative stages of the haloxylon sp., degradation parameters, with adding naoh and ca(oh2 ). for this purpose, in may and october and january 2010 enough some haloxylon sp. of the ammary area was prepared. crude protein and ash percentage are decrease, neutral detergent fiber percentage with pragress stage ...
background: many studies have been showed that certain illnesses including fungi and bacterial infections can be transmitted to human by contaminated swimming pools water. the main objective of the present study was to detect microbial (bacterial and fungi) and chemical (ph and chlorine levels) pollutions of the all swimming pools water in hamadan city, iran . methods: this study was a cross-se...
Nitrate (NO3) contamination of groundwater is a major concern throughout intensive agricultural areas. In the present laboratory scale study, an electrolytic reduction method employing copper cathode and insoluble triple mixed oxide anode was studied for the denitrification of groundwater in a divided cell. Influence of process parameters such as pH, current density and time were studied and th...
introduction : direct relationship has been reported between the prevalence of some parasitic diseases and the presence of microorganisms in water. there are possible contamination of water resources, due to the climate changes and increasing the groundwater level. the purpose of this research was to determine the contamination rate of drinking water supplies to parasites in mazandaran province...
BACKGROUND AND AIMS As a result of poor quality of public water supply in many countries, people have recently turned to bottled water consumption, the fluoride content of which is not generally consistent among different brands. This study sought to measure the fluoride concentration of public water supply in comparison with commercial brands of min-eral bottled water available in Tehran, Iran...
background: pre-chlorination of raw water containing natural organic matters may lead to forming harmful disinfection by-products such as trihalomethanes (thms), the measurement of which needs expensive advanced analytical instruments. this study was conducted to anticipate thms formation potential in bandar abbas drinking water system using cheap and simple experiments and a mathematical model...
abstract background and purpose: according to the reported problems in area of the inappropriateness of water quality which used for washing and staining of car apparatuses in a car factory, this research was carried out for identification of physical, chemical, and microbiological characteristics of the consumed water in babol car factory, iran. materials and methods: physical and chemical par...
Introduction: Carwash are industries that consume large amounts of water and results wastewater that have different type of pollutents(detergents, oil and grease, metals, etc.). Enough treatment of carwash wastewater is important and could be protect surface and ground water. Therefore, in this study ozonation process was used for carwash wastewater that generated from washing the cars in...
BACKGROUND Antibiotic residues are being constantly identified in environmental waters at low concentration. Growing concern has been expressed over the adverse environmental and human health effects even at low concentration. Hence, it is crucial to develop a multi-residues analytical method for antibiotics to generate a considerable dataset which are necessary in the assessment of aquatic tox...
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