نتایج جستجو برای: new products
تعداد نتایج: 2088413 فیلتر نتایج به سال:
Copper Chrome Arsenic (CCA) is a potent wood preservative. It currently the dominant preservative used in Aotearoa (New Zealand). Internationally, CCA has been phased out many jurisdictions over last decades due to health and environmental concerns. This review summarises current knowledge about risks of treated timber, revisits risk assessment New Zealand authorities timber discusses challenge...
oxidative addition reactions of 1,4-diiodo-butane and 1,3-diiodo-propane with [ptme2(ph2phen)]; in which ph2phen=4,7-diphenyl-1,10-phenanthroline, were studied in different solvents such as acetone and benzene.oxidative addition reaction of [pt me2(ph2phen)] with i(ch2)4i and i(ch2)3i produced the [pt me2i(ch2)4(ph2phen)i] (1a) and [pt me2i(ch2)3(ph2phen)i] (1b).all the platinum (iv) products w...
Succinimidinium hydrogensulfate ([H-Suc]HSO4), as a new and stable derivative of succinimide, is easily prepared by the reaction of succinimide with neat sulfuric acid. This ionic liquid can be used as an efficient catalyst for the acetylation of alcohols, phenols, thiols and amines at room temperature under mild and solvent free conditions. All the products are separated and identified using d...
Abstract Background and Objectives The plasma industry started during World War II with the need for Plasma Derived Medicinal Products (PDMP). About 30 major plasma products are now commercially available, the most important of which are albumin, coagulation factors and immunoglobulin. Demand for these products is still growing, and these products have become particularly important not only in ...
Succinimidinium hydrogensulfate ([H-Suc]HSO4), as a new and stable derivative of succinimide, is easily prepared by the reaction of succinimide with neat sulfuric acid. This ionic liquid can be used as an efficient catalyst for the acetylation of alcohols, phenols, thiols and amines at room temperature under mild and solvent free conditions. All the products are separated and identified using d...
this study was accomplished in iran to investigate waste of common log sawing methods and to propose new sawing method. the old methods were performed due to difficulties on carrying logs out of forest. it seems necessary to change old methods due to development of sawmills and forest harvesting plans. the dimensions of wood products were collected to calculate the waste of old sawing methods ....
in the modern world today where the margin of error is minimal for the growth and at the same time there is a very competitive and challenging economic environment, it is very significant and crucial that efficiency is being prevailed in the organization through the help of international standards through which the respective organization should maximize their profits and should meet their resp...
ii abstract the legend of human being’s refulgence was distorted completely in the age of modernity. this new age, had some drastic negative effects, besides its positive qualities. one significant negative effect of it was the emergence of neurosis in human beings. aldous huxley’s brave new world was one of the novels of the 02 th century that contained the prophecy of criticizing ...
in this thesis, a better reaction conditions for the synthesis of spirobarbiturates catalyzed by task-specific ionic liquid (2-hydroxy-n-(2-hydroxyethyl)-n,n-dimethylethanaminium formate), calcium hypochlorite ca(ocl)2 or n-bromosuccinimide (nbs) in the presence of water at room temperature by ultrasonic technique is provided. the design and synthesis of spirocycles is a challenging task becaus...
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