نتایج جستجو برای: dehydration of alcohols
تعداد نتایج: 21165385 فیلتر نتایج به سال:
Introduction: during the physical activity in hot environments, sweating with evaporation, the important physiological response of the body increases which can be lead to dehydration . Long-term water shortages could adversely affect vital organs. The aim of this study was to determine heat stress and dehydration status of workers in hot workplaces. Methods: This cross sectional study ...
Background: Opioid abuse is common in Iran. In recent years, methadone maintenance therapy (MMT) has gained popularity in this country. This study aimed at evaluation concurrent abuse of alcohol in patients under MMT. Methods: A predesigned questionnaire was developed and completed after obtaining verbal consent among 49 subjects under MMT in Kian Rehabilitation Centre during January 2014. Resu...
a new synthesis of a-hydroxycarboxylates and 2-hydroxybenzoates based on the reaction of acetonides of a-hydroxycarboxylic acids and 2-hydroxybenzoic acid with sodium alkoxides in the corresponding alcohols as solvent is described. in general, decreasing the steric hindrance of the reactants and increasing the boiling points of alcohols increased the yields and decreased the required time for t...
Background and Objectives: A fairly large amount of oil is absorbed to the food during deep frying. The aim of this study was to reduce the oil absorption of eggplant slices during frying by using osmotic dehydration pretreatment. Materials and Methods: Using maltodextrin (0, 20, 40% w/v) and sodium chloride (salt, 0, 10, 20% w/v), the effect of osmotic dehydration on different properties of e...
Introduction: Water is an essential nutrient for life. It comprises 75% of total body weight in infants,60% in adult males and 50% in adult females. Decrease in body water is commonly known as dehydration. Acute or chronic dehydration is a common condition in some population groups, especialy the elderly and those who participate in physical activity in warm enviroments. Potential consequences ...
introduction: water is an essential nutrient for life. it comprises 75% of total body weight in infants,60% in adult males and 50% in adult females. decrease in body water is commonly known as dehydration. acute or chronic dehydration is a common condition in some population groups, especialy the elderly and those who participate in physical activity in warm enviroments. potential consequences ...
Trimethylsilylation of a variety of alcohols and phenols, in the presence of silica chloride, using hexamethyldisilazane (HMDS) in solution and under solvent-free conditions is reported. Trimethylsilyl ethers were formed in excellent yields both for aliphatic alcohols and phenols without having an electron-withdrawing group. In addition, SiO2-Cl can be recovered and reused after drying.
In the pharmaceutical industry, cryoprotectants are added to buffer formulations protect active ingredient from freeze- and thaw damage. We investigated freezing thawing of aqueous sodium citrate with various cryoprotectants, specifically amino acids (cysteine, histidine, arginine, proline lysine), disaccharides (trehalose sucrose), polyhydric alcohols (glycerol mannitol) surfactants (polysorba...
A highly enantioselective and diastereoselective copper(II)-bisoxazolidine catalyzed nitroaldol reaction with aliphatic and aromatic trifluoromethyl ketones is described.
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