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synthesis coupling of two amino acids in solution. the unprotected amine of one reacts with the unprotected carboxylic acid group of the other to form a peptide bond. in this example, the second reactive group (amine/acid) in each of the starting materials bears a protecting group. in organic chemistry...
cast iron. the higher carbon content of cast iron made it too brittle for use in weapons or tools that would sustain impact, but it was more resistant to rust than wrought iron and could easily be cast in desired forms. early forms of iron working are now largely obsolete, though traditional cast iron...
(class / ) heating by electromagnetic wave (class / ) involving dielectric heating or passage of electric current through food material (class / ) including step of shaping in mold to form final desired configuration (class / ) treatment with ultraviolet or visible light (class / ) preparation of frozen...
screen preparation products suitable for all mesh types. specific products have been designed for screen cleaning, stencil removal, degreasing and haze removal. there are also the kiwo cleanline and pregan product lines to fulfil your performance and environmental requirements. screen cleaners some of...
documents support news proven lotus seed benefits update: / / lotus seeds also known as convenient snack that contains protein with calcium, phosphorus, manganese, iron and potassium. the antioxidants are useful to slow the aging process and help to fight inflammation. chinese medicine use benefit of...