نتایج جستجو برای: polychlorinated biphenyls

تعداد نتایج: 7496  

Journal: :تحقیقات نظام سلامت 0
بی‏بی فاطمه نبوی دانشجوی کارشناسی ارشد، کمیته تحقیقات دانشجویی، گروه مهندسی بهداشت محیط، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران فهیمه تیموری کارشناسی ارشد، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران محمدمهدی امین استادیار، گروه بهداشت محیط، مرکز تحقیقات محیط زیست، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران مریم حاتم زاده کارشناس، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران مهناز نیک آئین دانشیار، گروه بهداشت محیط، مرکز تحقیقات محیط زیست، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران

background: polychlorinated biphenyls (pcbs) are synthetic aromatic compounds containing two benzene rings with one to ten chlorine atoms. there are concerns about the health risks of these compounds in the environment due to their toxicity, persistence, and biological accumulation. pcbs wastes must be treated before being discharged to the environment because they will pollute the water, soil,...

Journal: :تحقیقات نظام سلامت 0
حشمت اله مرادپور کارشناس ارشد مهندسی بهداشت محیط، مرکز تحقیقات سلامت محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران. محمد مهدی امین دانشیار، مرکز تحقیقات سلامت محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران. مهناز نیک آیین دانشیار، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران. آرش شفیعی کارشناس، شرکت سهامی ذوب آهن، اصفهان، ایران. رضا مولایی کارشناس، شرکت سهامی ذوب آهن، اصفهان، ایران. امین صبوری کارشناس، شرکت سهامی ذوب آهن، اصفهان، ایران. محمد قاسمیان

background: in this study, the inhibition rate of different oil concentrations containing pcbs (1242 and 1254 pcb arochlors) on the anaerobic biomass was investigated by specific methanogenic activity using the vials with volume of 120 ml. methods: original samples were divided into two groups: with soil containing pcbs and without pcbs and the control samples in both cases were just contained ...

Journal: :Toxicology and Industrial Health 2016

Journal: :Hypertension 2015
Carolina Donat-Vargas Alfredo Gea Carmen Sayon-Orea Carmen de la Fuente-Arrillaga Miguel Angel Martinez-Gonzalez Maira Bes-Rastrollo

Polychlorinated biphenyls are persistent organic pollutants that are consumed because of their bioaccumulation through the food chain. Evidence from different sources suggests a positive association between polychlorinated biphenyls exposure and the incidence of hypertension. However, no previous prospective study has investigated this potential relationship in adults. We prospectively assessed...

2015
Ekaterina S. Shumkova Björn E. Olsson Anna V. Kudryavtseva Elena G. Plotnikova

We report the 5,728,255-bp draft genome sequence of Rhodococcus ruber P25, isolated from a soil polluted with halogenated aromatic compounds in the city of Perm, Russia. The strain degrades polychlorinated biphenyls and a broad range of aromatic compounds. It possesses genes that mediate the degradation of biphenyls/polychlorinated biphenyls, naphthalene, and monoaromatic compounds.

Journal: :international journal of environmental research 0
s. mathews north-west university, mafikeng campus, south africa k. sichilongo university of botswana, botswana

wastewater contains a variety of chemical substances owing to the different sources that contribute to affluent into sewage treatment plants. raw and wastewater samples were obtained from the surface of the water bodies at depths of 50 and 100 metres but at different locations in each sampling site. the water samples were subjected to extraction of polychlorinated biphenyls (pcbs) using quecher...

Journal: :iranian journal of toxicology 0
بهرام کمره ای bahram kamarehie ​ department of environment health, lorestan university of medical حسن اصیلیان مهابادی hassan asilian mahabadi department of occupational health, tarbiat modares university, tehran, iran. احمد جنیدی جعفری ahmad joneidi jafari department of environment health, iran medical science university, tehran, iran.

background: in this research, the decomposition of aroclor 1254, including 20 kinds of poly chlorinated biphenyls (pcbs), in real waste transformer oil in the presence of peg1000, naoh, zero valent iron and h2o by microwave (mw) irradiation was studied. methods: central composites design (ccd) method was carried out for experimental design. the effects of microwave power levels (200- 1000 w), r...

2006
Lorentz Jäntschi Sorana Bolboacă

Octanol-water partition coefficient of two hundred and six polychlorinated biphenyls was model by the use of an original method based on complex information obtained from compounds structure. The regression analysis shows that best results are obtained in four-varied model (r = 0.9168). The prediction ability of the model was studied through leave-one-out analysis (rcv(loo) = 0.9093) and in tra...

2001
Kathy E. Lee Jesse P. Anderson

Introduction Background Purpose and scope Acknowledgments Data sources and analyses Data sources Data analyses Spatial distribution of polychlorinated biphenyls in common carp and walleye in the Mississippi, Minnesota, and St. Croix Rivers Comparison among individual sites Comparison among river segments Temporal distribution of polychlorinated biphenyls in common carp and walleye in the Missis...

Journal: :The New England journal of medicine 1996
J L Jacobson S W Jacobson

BACKGROUND In utero exposure to polychlorinated biphenyls, a ubiquitous environmental contaminant, has been linked to adverse effects on neurologic and intellectual function in infants and young children. We assessed whether these effects persist through school age and examined their importance in the acquisition of reading and arithmetic skills. METHODS We tested 212 children, recruited as n...

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