Blockage of the bile duct by a cancer, gallstones, or scarring from injury prevents the bile from being transported to the intestine and the active ingredient in the bile (bilirubin) instead accumulates in the blood.
Over 60 million tonnes of poly(ethene), often known as polyethylene and polythene, is manufactured each year making it the world's most important plastic. Its uses include film, packaging and containers, from bottles to buckets.ses of poly(ethene) (polyethylene). -3) and linear low density (LLDPE) (ca 0.915-0.940 g cm -3) and high density (HDPE) (ca 0.940-0.965 g cm -3). The LDPE or LLDPE form is preferred for film packaging and for electrical insulation.
Parylene coatings share many properties. They are all lightweight, offering the utmost barrier protection for their low mass, and can also offer added strength when used to coat wires. Because they are transparent, parylene coatings are appropriate for use on medical devices where visibility is key.