organic groups for the methyl groups. for example, silicones with phenyl groups are more flexible polymers than those with methyl groups. they are also better lubricants and are superior solvents for organic compounds. the structure of the repeating units of silicones can be represented as: where r...
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 are similar to those of simple molecules. for example, if the polymer...
as government policy stimulates alternatives to fossil fuels. as crops are increasingly used for biofuels rather than food, food supplies could be jeopardised, prices rise and biodiversity suffer. what's more, biofuels made from vegetable oils can actually create more greenhouse gases than fossil fuels...
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machine user manual) - en into ar ( k words) guzel rakhimova posting from proz.com : am on mar translation of instructions for trade representatives #sdltrados english russian words % complete materials (plastics,ceramics,etc.),engineering: industrial guzel rakhimova posting from proz.com : am on mar...
these threats are to be avoided. as rinsing mixer and screw with water and cleaning agents brings unwanted moisture into the system which can cause creation of lumps in the product, wet spots behind o-rings or gaskets and generate vast quantities of contaminated water or other cleaning fluids that have...
else gliding. the kaimai ranges just to the east were pumpin' and nobody wanted to come down. i don't blame them. towards the end of the day the bad weather started rolling in and most people were putting their gliders away. it was obvious that i wasn't going to get up in our club's twin astir mw, so...
alloys has integratm service centres that operate worldwide and offer extensive expertise across a number of industries. we are the experts and benefit from a wealth of knowledge and experience that has developed throughout the years, enabling us to provide the best possible solutions to our customers...