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Dielectric Breakdown Voltage. 40 MV/m. Polyvinyl chloride (alternatively: poly (vinyl chloride), [6] [7] colloquial: vinyl [8] or polyvinyl; abbreviated: PVC [8]) is the world's third-most widely produced synthetic polymer of plastic (after polyethylene and polypropylene ). About 40 million tons of PVC are produced each year.
Specialty. Cardiology. A premature ventricular contraction ( PVC) is a common event where the heartbeat is initiated by Purkinje fibers in the ventricles rather than by the sinoatrial node. PVCs may cause no symptoms or may be perceived as a "skipped beat" or felt as palpitations in the chest. PVCs do not usually pose any danger.
Chlorinated polyvinyl chloride ( CPVC) is a thermoplastic produced by chlorination of polyvinyl chloride (PVC) resin. CPVC is significantly more flexible than PVC, and can also withstand higher temperatures. Uses include hot and cold water delivery pipes and industrial liquid handling. CPVC, like PVC, is deemed safe for the transport and use of ...
Red List Building Materials contain chemicals that have been designated as harmful to living creatures, including humans, or the environment. The Living Building Challenge Red List is maintained by the International Living Future Institute, and is the only organization that uses the term 'Red List'.
Vinyl chloride is an organochloride with the formula H 2 C = CHCl. It is also called vinyl chloride monomer ( VCM) or chloroethene. This colorless compound is an important industrial chemical chiefly used to produce the polymer, poly (vinyl chloride) (PVC). Vinyl chloride monomer is among the top twenty largest petrochemicals ( petroleum ...
PVC, despite its high outgassing rate, can be used in limited applications for rough vacuum lines. Nylon is self-lubricating but has high outgassing rate and high affinity to water. Acrylics have high outgassing rate and high affinity to water. Polycarbonates and polystyrene are good electrical insulators with moderate outgassing.
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A peripheral venous catheter is the most commonly used vascular access in medicine. It is given to most emergency department and surgical patients, and before some radiological imaging techniques using radiocontrast, for example. In the United States, in the 1990s, more than 25 million patients had a peripheral venous line each year.