نتایج جستجو برای: toluene alkylation

تعداد نتایج: 13620  

Journal: :تحقیقات نظام سلامت 0
مسعود ریسمانچیان استادیار، گروه مهندسی بهداشت حرفه ای، دانشکده بهداشت،دانشگاه علوم پزشکی اصفهان،اصفهان، ایران جعفر اکبری دانشجوی کارشناسی ارشد، گروه مهندسی بهداشت حرفه ای، دانشکده بهداشت،دانشگاه علوم پزشکی اصفهان،اصفهان، ایران رضا کشاورزی دانشجوی دکترا، گروه شیمی معدنی، دانشکده شیمی، دانشگاه اصفهان، اصفهان، ایران

abstract: background: release of volatile organic compounds (vocs) in industrial and urban area have adverse effects on human health and  environment. the aim of this study was removal of gaseous toluene, as the most of pollutants among vocs, by using of tio 2 nanoparticles coated on nickel foam substrate. methods: tio 2 nanoparticles prepared by sol gel method and coated on nickel foam. morpho...

Journal: :International journal of occupational medicine and environmental health 2008
Michael Schäper Andreas Seeber Christoph van Thriel

OBJECTIVES The ototoxicity of occupational exposure to toluene plus noise was investigated in a longitudinal study in rotogravure printing and existing findings in the literature were evaluated. MATERIAL AND METHODS The study comprised four repeated examinations during 5 years and started with 333 male workers. Lifetime weighted average exposures (LWAE) to toluene and noise were determined fr...

1999
M. Narayanan

Investigations were conducted in a chamber to study the role of alfalfa plants in bioremediating toluene. Modeling and experimental results indicate that in situ bioremediation of toluene in the presence of plants is feasible and economical. This is primarily due to evapotranspiration which greatly enhances the vertical transport of dissolved contaminants from the saturated zone to the rhizosph...

Journal: :Toxicological sciences : an official journal of the Society of Toxicology 2007
William K Boyes Mark Bercegeay Quentin Todd Krantz Elaina M Kenyon Ambuja S Bale Timothy J Shafer Philip J Bushnell Vernon A Benignus

Acute exposure to toluene was assessed in two experiments to determine the relationship between brain toluene concentration and changes in neurophysiological function. The concentration of toluene in brain tissue at the time of assessment was estimated using a physiologically based pharmacokinetic model. Brain neurophysiological function was measured using pattern-elicited visual evoked potenti...

2015
Ki-Woong Kim Young Lim Won Kyung Sun Ko

The objectives of this study were to investigate the individual characteristics, lifestyle habits, exposure levels, and genetic diversity of xenobiotic-metabolizing enzymes involved in toluene metabolism in Korean and foreign workers exposed to toluene at a manufacturing plant. This study was conducted to determine the effects of culture or ethnicity on toluene metabolism. The results showed th...

Journal: :Journal of bacteriology 1991
G M Whited D T Gibson

Pseudomonas mendocina KR1 grows on toluene as a sole carbon and energy source. A multicomponent oxygenase was partially purified from toluene-grown cells and separated into three protein components. The reconstituted enzyme system, in the presence of NADH and Fe2+, oxidized toluene to p-cresol as the first detectable product. Experiments with p-deutero-toluene led to the isolation of p-cresol w...

Journal: :Journal of bacteriology 2000
A Memisoglu L Samson

DNA damage is unavoidable, and organisms across the evolutionary spectrum possess DNA repair pathways that are critical for cell viability and genomic stability. To understand the role of base excision repair (BER) in protecting eukaryotic cells against alkylating agents, we generated Schizosaccharomyces pombe strains mutant for the mag1 3-methyladenine DNA glycosylase gene. We report that S. p...

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