To detect heart sounds, the patient should be lying down and examined in a quiet room. Left-sided S3 is best heard at the apex of the heart (the lower pointed end of the heart) with the patient lying on his left side. It is a low-pitched sound and heard best using the bell of the stethoscope with light pressure.
Adorable animal families that will make you aww. Polystyrene is a type of polymer with thermoplastic properties produced from the petroleum-derived monomer, styrene. In solid form, it is a colorless and rigid plastic, but it may also be returned to a liquid state by heating, and used again for molding or extrusion.
Polypropylene is occasionally recycled. PP is strong and can. usually withstand higher temperatures. It is used to make lunch. boxes, margarine containers, yogurt pots, syrup bottles, prescription bottles. Plastic bottle caps are often made from PP. Polystyrene is commonly recycled, but is difficult to do. Items. such as disposable coffee cups, plastic food boxes, plastic cutlery. and packing foam are made from PS. Code 7 is used to designate miscellaneous types of plastic not. defined by the other six codes. Polycarbonate and Polylactide are. included in this category. These types of plastics are difficult to. recycle. Polycarbonate (PC) is used in baby bottles, compact discs, and medical storage containers.