.، نويسنده , issue information : هفته نامه با شماره پیاپی سال pages : from page : to page : abstract : benzylic, allylic, propargylic and unactivated alcohols can be oxidised with activated manganese dioxide in the presence of n-methoxy-n-methyl- -(triphenylphosphoranylidine)acetamide to generate directly...
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or vegetable and animal oils are processed into glycerin and fatty acid: pumps specified amount of fat or oil into vat and admits prescribed quantity of sulfuric acid from storage tank. ) observes gauges and thermometer and turns steam valves to boil contents of vat. ) pumps oil or fat to second vat...
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abrasion. crust: leather that has been tanned, dyed, and dried, but not finished. embossed leather: leather that has a printed pattern on the surface to either mimic or replace natural grain patterns fat tanned: hide that has been converted into leather through treatments that involve soft animal fats...