Most varicose and spider veins appear in the legs due to the pressure of body weight, force of gravity, and task of carrying blood from the bottom of the body up to the heart. Compared with other veins in the body, leg veins have the toughest job of carrying blood back to the heart. They endure the most pressure.
Curing a thermosetting resin transforms it into a plastic, or elastomer by crosslinking or chain extension through the formation of covalent bonds between individual chains of the polymer. Crosslink density varies depending on the monomer or prepolymer mix, and the mechanism of crosslinking:
Labels About Curing. Curing refers to the interaction of the nitrates with the meat to develop the color, some of its antimicrobial properties and also a bit of taste, Sebranek said. It's basically what sets bacon apart from raw pork belly. The conventional bacon-curing method is to inject the belly with a solution of salt, sugar, phosphates and nitrates. If you don't see any curing-related label, you can probably assume the producer used this default method. But not all of them do.