نتایج جستجو برای: contamination

تعداد نتایج: 52892  

Journal: :Journal of nuclear medicine technology 2003
Darcy L Kasner Michael E Spieth

OBJECTIVE We present 3 cases of suspected radioisotope urinary contamination that occurred on a single day. Because net clearance is via the kidneys, the injected dose is excreted in patients' urine. It is important to recognize the patterns of urinary contamination to avoid reporting false-positive abnormalities. MATERIALS AND METHODS (99m)Tc-Medronate was administered intravenously and whol...

Journal: : 2023

Purpose. Knowing and evaluating the degree of pollution caused by elements under study, Statement potential environmental hazards index. in Samarra city-Iraq to know limits mineral pollution, because an increase them is harmful humans. Methodology. The first step starting work for current as modeling was carried out a field tour November each region depth, concentrations heavy approved study (m...

2018
Nicola A. Wardrop Allan G. Hill Mawuli Dzodzomenyo Genevieve Aryeetey Jim A. Wright

BACKGROUND Current priorities for diarrhoeal disease prevention include use of sanitation and safe water. There have been few attempts to quantify the importance of animal faeces in drinking-water contamination, despite the presence of potentially water-borne zoonotic pathogens in animal faeces. OBJECTIVES This study aimed to quantify the relationship between livestock ownership and point-of-...

Journal: :iranian journal of environmental sciences 0
mahmud hassan department of environmental sciences, jahangirnagar university, dhaka-1342, bangladesh s. m. didar-ul islam department of environmental sciences, jahangirnagar university, dhaka-1342, bangladesh fahad ahmed department of environmental sciences,jahangirnagar university,savar,dhaka-1342,bangladesh research fellow(ms),wateraid international,bangladesh mirza a.t.m. tanvir rahman department of environmental sciences, jahangirnagar university, dhaka-1342, bangladesh

readymade garment industries are the prominent economic sector for bangladesh as well as scoping the huge working area for workers. but health condition of workers, drinking water quality, and proper maintenance of the environmental parameters are not well monitored. this study aims to assess the physio-chemical and bacteriological quality of drinking water provided for the garment workers in d...

Journal: :iranian journal of public health 0
mir-hassan moosavy 1. dept. of food hygiene and aquatic, faculty of veterinary medicine, university of tabriz , tabriz, iran. nassim shavisi 1. dept. of food hygiene and aquatic, faculty of veterinary medicine, university of tabriz , tabriz, iran. keith warriner 2. dept. of food science, faculty of agriculture, university of guelph , guelph, canada. ehsan mostafavi 3. dept. of epidemiology, pasteur institute of iran , tehran, iran.

transmission of human pathogens can be occurred via inert objects. paper currency is a further common contact surface whereby pathogens can be transferred within a population although the significance remains unknown. hence, the aim of the present study was to investigate microbial populations associated with iranian paper currency.this study was carried out by getting 108 samples of the irania...

Journal: :journal of paramedical sciences 0
moayed avazpour department of environmental health, faculty of health, ilam university of medical sciences, ilam mohammad rostami nejad gastroenterology and liver diseases research center, shahid beheshti university of medical sciences, tehran fariba seifipour department of environmental health, faculty of health, ilam university of medical sciences, ilam jahangir abdi department of parasitology, faculty of paramedicine, ilam university of medical sciences, ilam

vegetables, used in preparing salads, are most important part of the diet. these materials are often irrigated by untreated urban wastewater. wastewater, contaminated with ova of parasites, bacteria and protozoa, are used as fertilizers and it can cause a variety of infectious diseases. the purpose of this study is detection of microbial contamination of salad used in ilam’s restaurants. in thi...

Journal: :تحقیقات نظام سلامت 0
امیر محمدی دانشجوی کارشناس ارشد، کمیته تحقیقات دانشجویی، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران افشین ابراهیمی استادیار، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران. حسین نوروزی استادیار، دانشکده پیراپزشکی، دانشگاه علوم پزشکی تهران، تهران، ایران پروین رزمجو کارشناس، مرکز تحقیقات محیط زیست، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران پریسا معتمدی دانشجوی کارشناسی، کمیته تحقیقات دانشجویی، گروه مهندسی بهداشت محیط، مرکز تحقیقات محیط زیست، بهداشت، دانشکده دانشگاه علوم پزشکی اصفهان، اصفهان، ایران الهام شیردل دانشجوی کارشناسی، کمیته تحقیقات دانشجویی، گروه مهندسی بهداشت محیط، مرکز تحقیقات محیط زیست، بهداشت، دانشکده دانشگاه علوم پزشکی اصفهان، اصفهان، ایران

background: microorganisms on various surfaces in industrial and residential environments can spread infectious diseases. their control is thus a major concern. the aim of this study was to survey the bacterial contamination of elevator buttons in schools of isfahan university of medical sciences, isfahan, iran in the summer of 2011. methods: this study was done as a cross sectional research. a...

Journal: :Dental press journal of orthodontics 2013
Mauren Bitencourt Deprá Josiane Xavier de Almeida Taís de Morais Alves da Cunha Luis Filipe Siu Lon Luciana Borges Retamoso Orlando Motohiro Tanaka

OBJECTIVE To evaluate the influence of saliva contamination on the bond strength of metallic brackets bonded to enamel with hydrophilic resin composite. METHODS Eighty premolars were randomly divided into 4 groups (n = 20) according to bonding material and contamination: G1) bonded with Transbond XT with no saliva contamination, G2) bonded with Transbond XT with saliva contamination, G3) bond...

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