نتایج جستجو برای: water samples were analysed using standard laboratory methodsthe ew ph

تعداد نتایج: 6425894  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شاهد - دانشکده علوم پایه 1388

introduction acetic acid bacteria are large group of obligate aerobic gram negative bacteria with the ability to oxidize ethanol to acetic acid (1). they are widely distributed in natural habitats and classified in family acetobacteraceae. members of this family are useful in industrial production of vinegar(2). acetic acid bacteria (aab) can use substrates as glucose, ethanol, lactate or glyc...

Journal: :avicenna journal of dental research 0
t massum pedodontist, private practice, iran f mojarrad associate professor, department of pediatric dentistry , faculty of dentistry, ham a dan university of medicalسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) k khodakarami dentist

statement of the problem generally, the main source of fluoride intake is drinking water. excessive consumption of bottled water as a substitute or in addition to the tap water supply may have implications for safe fluoride supplementation. in this study, fluoride contents in six commercial brands of bottled water were measured materials and methods six different brands of bottled drinking wate...

Journal: :Journal of water and health 2012
Lovorka Bilajac Darija Vukić Lušić Jagoda Doko Jelinić Tomislav Rukavina

The present study was undertaken in order to determine the quality of indoor pool waters in hotels along the Croatian coast. We wanted to assess the risks of exposure to microbial and chemical contaminants and find out if training pool operators to use a quality assurance system, that we developed, influenced hygienic conditions and water quality in swimming pools or not. The samples were analy...

Journal: :Health promotion perspectives 2012
Hassan Taghipour Mohammad Shakerkhatibi Mojtaba Pourakbar Mehdi Belvasi

BACKGROUND This paper discusses the corrosion and scaling potential of Tabriz drinking water distribution system in Northwest of Iran. Internal corrosion of piping is a serious problem in drinking water industry. Corrosive water can cause intrusion of heavy metals especially lead in to water, therefore effecting public health. The aim of this study was to determine corrosion and scaling potenti...

Journal: :Journal of Geoscience and Environment Protection 2021

The present paper sought to assess some physico-chemical parameters above permissible guidelines of irrigation water standard, the study was carried during establishment Ecotourism Park. field survey design used and it accompanied by laboratory tests analyze levels in both seasons (dry season wet seasons) for bodies as well groundwater. physical chemical analysed were Sodium Adsorption Ratio (S...

2013
Mohammad mehdi Heydari Hossein Noori Bidgoli

The purpose of this study is investigating the chemical analysis of drinking water in Kashan district. This district contained Kashan, Aran and Bidgol and Nooshabad cities and it had an estimated population more than of 400,000 in 2007. 42 Samples were collected during October 2006 to May 2007.The temperature of the water Samples is in the range 25-30°C. The water samples were analyzed for pH ,...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی مشهد - دانشکده دندانپزشکی 1390

objective: the objective of this study was to investigate the invitro fluoride release of four new self-adhesive resin cements; set (sdi, australia), breeze (pentron, usa), embrace wetbond (pulpdent, usa), g-cem (gc, japan) and to assess the bonding performance of these self-adhesive resin cements for bonding of orthodontic brackets. materials and methods: for fluoride release experiment, six ...

Journal: :بهداشت و توسعه 0
حسین جعفری منصوریان احمد رجبی زاده محمد جعفری مدرک شیدوش دولتشاهی بهنام حاتمی

background: contamination of swimming pools’ water can lead to the transfer of different diseases to humans. the aim of this study was to investigate the quality of water in kerman swimming pools. methods: in this cross-sectional study, sampling from swimming pools was performed before and after swimming, every week. total number of samples collected was 150 samples. samples were investigated i...

2004
E. Olszewska

Combination of solid-phase microextraction with gas chromatography enables rapid, repeated analysis of organic compounds in water. Fluazifop-p-butyl (FPB) (propanoic acid 2-[4-[[5-(trifluoromethyl)-2-pyridinyl]oxy]phenoxy] butyl ester) is the active substance in the herbicide Fusilade. Samples of distilled water were spiked with FPB in the laboratory and the analyte was isolated from the water ...

Journal: :journal of food quality and hazards control 0
i. salehi school of allied medical sciences, hamadan university of medical sciences, hamadan, iran m. ghiasi deputy of food and drug, hamadan university of medical sciences, hamadan, iran a.r rahmani department of environmental health, school of public health, hamadan university of medical sciences, hamadan, iran m. nouri sepehr department of environmental health, school of public health, alborz university of medical sciences, karaj, iran m. kiamanesh deputy of health, hamadan university of medical sciences, hamadan, iran l. rafati [email protected]

introduction: the increasing of population and limited drinking water resources has enhanced the necessity of using bottled water. many people are now using bottled water because they believe it is a healthful alternative beverage to soft drinks or other bottled beverages. therefore, the bottled water industry has grown immensely during the past decades. this descriptive cross-sectional study h...

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