Rockroses for Northwest Gardens. Cistus x aguilarii âMaculatusâ. . . . rock roses are a pleasure to plant and their possibilities are endless. They are best clothing hot, dry banks, or tumbling over rocks in a chaparral-type planting, or billowing out from an island planting of drought resistant shrubs . . .
Premature Ventricular Contractions. Description. Premature ventricular contractions (PVCs) are beats which are initiated in the ventricles or lower chambers of the heart, prematurely. As opposed to PACs, when the SA node (the natural pacemaker of the heart) gets interrupted, PVCs do not interrupt the SA node.
PVC or polyvinyl chloride is an extremely popular plastic in the piping world; it is extremely rigid and is adept at resisting many chemicals. The main form of welding is though solvents and is predominantly used for applications such as sewers, drain pipes and cold water pressurised water piping.