نتایج جستجو برای: 4 dioxane
تعداد نتایج: 1304616 فیلتر نتایج به سال:
Polyvinyl benzyl chloride (PVBC) was synthesized by free radical polymerization of 4-vinylbenzyl using benzoyl peroxide initiator at 60 °C. PVBC synthesised in different solvents such as toluene, xylene, 1,4-dioxane, and tetrahydrofuran. The polymers were structurally characterized 1H NMR FTIR spectroscopic techniques. thermal property the polymer investigated thermogravimetric analysis (TGA) d...
' .On the way of purification of beef liver arginase, Kitagawa and author') obtained a crystalline protein and ascertained it to be identical with the crystalline catalase which had been first isolated by Sumner and Dounce2) in 1937. In order to isolate the crystalline catalase, Sumner employed fractional precipitation by dioxane. An attempt to substitute acetone for dioxane was unsuccessful in...
Pseudonocardia dioxanivorans CB1190 is the first bacterium reported to be capable of growth on the environmental contaminant 1,4-dioxane and the first member of the genus Pseudonocardia for which there is an annotated genome sequence. Preliminary analysis of the genome (chromosome and three plasmids) indicates that strain CB1190 possesses several multicomponent monooxygenases that could be invo...
In the chemical industry, 1,4-diethylene dioxide, commonly called dioxane, is widely used as a solvent well stabilizing agent for chlorinated solvents. Due to its high miscibility, dioxane ubiquitous water contaminant. This study investigates effectiveness of catalyst- and ultrasound (US)-assisted persulfate (PS) activation with regard degrading dioxane. As first step, composite catalyst was pr...
Dioxane and water form a positive homoazeotrope which has an azeotropic decrease in temperature sufficiently large to effect the complete r emoval, by fractional distillation through an efficient column, of water present as an impurity. The boiling-point-composition diagram, including the composition of the vapor in equilibrium with the boiling liquid, was determined. The normal boiling point o...
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