highly pathogenic avian influenza (h.p.a.i.) has bought the focus back on effective biosecurity. biosecurity is one of the main weapons to prevent this disease. h.p.a.i. can be spread via feces from infected birds, clothing or equipment. therefore, it's very important to control traffic between infected...
and phenol, in the proportion of : , are reacted under acidic conditions, a resin (often known as a novalac resin) is produced, where n = to . with higher proportions of methanal and with the -position vacant, branching is possible, the methanal providing additional -ch - links. on heating a resin is...
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nuts per annum. coconut area distributed in states and three union territories under different agro-climatic conditions. years' tradition in coconut cultivation. premier coir manufacturing country in the world. producer of best grade milling copra in the world yielding high grade coconut oil known for...
be used to convert polymers into a vast range of different products. each of the other units in the polymers section describes the manufacture, properties and uses of an individual polymer or group of polymers in more detail. polymers are large molecules, a type of macromolecule. their chemical properties...
water so it is used as an antifreeze. uses of ethane- -diol (ethylene glycol) figure uses of ethane- -diol. data for from a variety of sources including ihs markit, . by far the most important uses of the diol is in the manufacture of polyesters , particularly pet (polyehylene terephthalate), used widely...
ammonia directly as it is too volatile and is poisonous. instead a solution of urea in water is injected into the hot gases emerging from the engine in the exhaust. urea is thermally decomposed to ammonia and carbon dioxide. this is the reverse of the process used to make ammonia: unlike ammonia, urea...