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.
Polyvinyl Chloride is a widely-used plastic. PVC containers offer clarity, durability and chemical resistance. They are primarily used for household goods such as soaps and cleaners, chemicals and personal care items. The material is often used for pipelines in the water and sewer industries because of its inexpensive nature and flexibility.