نتایج جستجو برای: Organic solvents

تعداد نتایج: 235734  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1991
m.r. hadjmohammadi a. samadi meibodi

peroxyoxalate system includes an oxalate ester, peroxide and a fluorescer, the energy resulted from the reaction of oxalate ester and peroxide is transferred to fluorescer and cause it to fluorsc. the effect of reactants chemical structure, their concentration, solvent media (polarity and viscosity) and the temperature, on the intensity of the illuminated light with respect to time have been st...

Journal: :iranian journal of science and technology (sciences) 2014
h. r. karbalaei-heidari

using enrichment procedures, 45 organic solvent-tolerant lipase producer bacterial strains were screened from areas contaminated by oil and organic solvents. among the strains, 15 isolates exhibited extreme stability toward organic solvents and high lipolytic activity. the neb-1 isolate which was later identified as   pseudomonas sp. strain neb-1 by biochemical tests and 16s rdna gene sequ...

Journal: :international journal of occupational and environment medicine 0
o aminian department of occupational medicine, faculty of medicine, tehran university of medical sciences, tehran, iran s hashemi center for research on occupational diseases, tehran university of medical sciences, tehran, iran k sadeghniiat-haghighi occupational sleep research center, tehran university of medical sciences, tehran, iran a shariatzadeh ziaeeyan training hospital, tehran university of medical sciences,tehran, iran ah naseri esfahani department of occupational medicine, school of medicine, hormozgan university of medical sciences, bandar abbas, iran

background: exposure to organic solvents is common among workers. objective: to assess neurobehavioral effects of long-term exposure to organic solvents among rubber workers in tehran, iran. methods: across-sectional study was conducted on 223 employees of a rubber industry. the participants completed a data collection sheet on their occupational and medical history, and demographic characteris...

2017
Krystian Miazek Lukas Kratky Radek Sulc Tomas Jirout Mario Aguedo Aurore Richel Dorothee Goffin

In this review, the effect of organic solvents on microalgae cultures from molecular to industrial scale is presented. Traditional organic solvents and solvents of new generation-ionic liquids (ILs), are considered. Alterations in microalgal cell metabolism and synthesis of target products (pigments, proteins, lipids), as a result of exposure to organic solvents, are summarized. Applications of...

ژورنال: طب کار 2016
عطارچی, میرسعید, محمدی, صابر, والی راد, فاطمه, پورزارع, غفور,

Introduction: Based on the results of some studies, concurrent exposure to organic solvents and noise in industrial areas can accelerate the amount of hearing loss. The aim of this study was to assess the effect of concurrent exposure to organic solvents and noise on high frequency hearing loss. Method: This was a cross-sectional analytic study conducted on 1029 tire manufacturing company wo...

Journal: :Molecules 2016
Jonathan Sperry Joaquín García-Álvarez

To overcome the well-established drawbacks of conventional organic solvents (toxicity, non-biodegradability, flammability, accumulation in the atmosphere) remarkable research efforts have been recently devoted to the replacement of traditional organic reaction media by the so-called Green Solvents. In this sense, the choice of a safe, non-toxic, biorenewable and cheap reaction media is a crucia...

Journal: :The Journal of biological chemistry 1988
A Zaks A M Klibanov

Subtilisin and alpha-chymotrypsin vigorously act as catalysts in a variety of dry organic solvents. Enzymatic transesterifications in organic solvents follow Michaelis-Menten kinetics, and the values of V/Km roughly correlate with solvent's hydrophobicity. The amount of water required by chymotrypsin and subtilisin for catalysis in organic solvents is much less than needed to form a monolayer o...

Solubility data of solid in aqueous and different organic solvents are very important physicochemical properties considered in the design of the industrial processes and the theoretical studies. In this study, experimental solubility data of 666 pharmaceutical compounds in water and 712 pharmaceutical compounds in organic solvents were collected from different sources. Three different artificia...

2003
Raphael Metzger

Organic solvents have long been recognized as being toxic to multiple organ systems. It is commonly known that exposure to organic solvents causes hematologic diseases, including hematologic cancers such as leukemia and lymphoma. A large body of literature has developed which shows that exposure to organic solvents causes kidney disease, especially chronic glomerulonephritis. A number of recent...

Journal: :avicenna journal of medical biochemistry 0
leila jamalzadeh department of biology, university of guilan, rasht, ir iran hosein ghafoori department of biology, university of guilan, rasht, ir iran; department of biology, university of guilan, rasht, ir iran. tel/fax: +98-1333333647 reyhaneh sariri department of biology, university of guilan, rasht, ir iran hanieh rabuti department of biology, university of guilan, rasht, ir iran jila nasirzade department of biology, university of guilan, rasht, ir iran hajar hasani department of biology, university of guilan, rasht, ir iran

background organic solvents are widely used in cell biology experiments. despite increasing the solubility, they have some moderate toxic effects. therefore, selecting the appropriate solvent along with the use of suitable concentration insures the accuracy and reliability of experimental results. objectives the current study aimed to examine the cytotoxic effects of some organic solvents on va...

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