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.
Type 6 - Polystyrene, styrene, polystyrene foam Not heat stable. Do not use in microwave. Do not microwave food in a styrofoam cont â¦ ainer! In addition to not being heat stable, polystyrene is a potential human carcinogen and usually contains bisphenol A. http://www.scn.org/~bk269/plastics.html.o not use in microwave. Do not microwave food in a styrofoam cont â¦ ainer! In addition to not being heat stable, polystyrene is a potential human carcinogen and usually contains bisphenol A. http://www.scn.org/~bk269/plastics.html.