نتایج جستجو برای: miscible organic solvents
تعداد نتایج: 236970 فیلتر نتایج به سال:
A population of 379 Dutch workers exposed to organic solvents was compared with a non-exposed population of 443 workers with regard to the prevalence of prenarcotic and neuraesthenic symptoms. Participants completed a questionnaire to collect information about their occupational history, exposure to organic solvents, and the occurrence of symptoms. The results of the study indicated that worker...
Tetrathiafulvalene (TTF) exhibits two reversible oxidation steps and is used as a novel multi-electron catholyte for nonaqueous organic redox flow batteries. To increase solubility in polar solvents, TTF derivatives with side chains are synthesized. 4-Methoxymethyl tetrathiafulvalene emerges promising two-electron because it liquid at room temperature miscible acetonitrile. Bulk-electrolysis ex...
INTRODUCTION A number of studies on enzymatic reactions have been carried out in organic media. These reactions have several benefits compared with conventional organic synthesis, including high enantioselectivity, substrate specificity and low energy consumption. There are, however, several drawbacks in using organic solvents. Volatile organic solvents are often flammable and toxic to the envi...
The rate of denaturation of hemaglobin and other proteins by mechanical shaking is strongly affected by organic solvents. A group pf solvents,including alcohols and ketones, was found to stabilize proteins at low concentrations, although these same organic solvents denatured proteins at high concentrations. The stabilizing effect of alcohols increased with increasing chain lenghts. The second g...
This manuscript presents an overview of current knowledge on the influence of organic solvents on the hearing and balance systems. The authors analyzed--the literature data concerning the results of all human and the most relevant animal studies, published untill 2012. Moreover, the guidelines for occupational medicine specialists were proposed on the basis of literature review and the authors'...
To clarify the combined effects of organic solvents and noise on hearing, the upper limit of hearing was measured in 48 male workers exposed to organic solvents and/or noise in a factory producing plastic buttons. Measuring the organic solvent concentrations in working environments and breathing zone air, and the noise level in workplaces were also done. The readings suggested that most exposur...
Organic solvents are chemically different compounds with one common feature: They dissolve fats, oils, resins, cellulose, acetate, and cellulose nitrate, which makes them widely used in industry. Most often organic solvents are used in paint and lacquer industries, in production of pesticides, explosives, plastic, rubber, cellulose, air conditioners, in pharmaceutical industry, and in leather i...
BACKGROUND Many women of reproductive age are employed in industries involving exposure to organic solvents. Animal toxicological studies and human case reports demonstrate that high exposure to solvents causes neurodevelopmental toxicity in exposed offspring. Data from occupationally exposed women and their children are few. OBJECTIVE To compare the cognitive, language, and motor performance...
A process is described in which toxic aromatic compounds are converted by toluene dioxygenase and in turn toluene cis-dihydrodiol dehydrogenase to catechols which are further polymerized by peroxidase-catalyzed oxidation producing polycatechols. Three approaches for obtaining catechols were employed: (1) addition of halogenated aromatics to P. putida F1, resulting in the accumulation of halogen...
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