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.
Polystyrene is produced by free radical vinyl polymerization, from the monomer styrene. This is a better picture of what the monomer styrene looks like: Go ahead, play with it! Polystyrene is also a component of a type of hard rubber called poly(styrene-butadiene-styrene), or SBS rubber.olystyrene is produced by free radical vinyl polymerization, from the monomer styrene. This is a better picture of what the monomer styrene looks like: Go ahead, play with it! Polystyrene is also a component of a type of hard rubber called poly(styrene-butadiene-styrene), or SBS rubber.