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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. [1]
In a fire, PVC can form hydrogen chloride fumes; the chlorine serves to scavenge free radicals, making PVC-coated wires fire retardant. While hydrogen chloride fumes can also pose a health hazard in their own right, it dissolves in moisture and breaks down onto surfaces, particularly in areas where the air is cool enough to breathe, so would ...
PVC clothing is shiny clothing made from the plastic polyvinyl chloride (PVC). [1] PVC plastic is often called "vinyl" and this type of clothing is commonly known as vinyl clothing . [ 2 ] PVC is sometimes confused with the similarly shiny patent leather .
The mercury-based technology is the main production method in China due to low price on coal from which acetylene is produced, [3] [2] with over 80% of national capacity as of 2018, even though the resulting PVC contains residues and is only suitable for low-end products like pipes. [15]
PVC lacks the realistic feel of wood. Although manufacturers form the product with a realistic wood grain or brushstroke, some contractors and homeowners simply do not like the artificial sheen of the product. PVC is also formulated to resist scratches, stains, and mold, but some wear will still show over the life of the product.
The honey version I feel is similar to a teriyaki barbecue sauce. The original has a soy sauce Ginger note to it. ... soft PVC foam that's shock-absorbing. It protects your joints all the way up ...
The "feels like" temperature, generally, is a more accurate description of what the human body will experience when stepping outside. The "feels like" temperature, generally, is a more accurate ...
Thicker grades of vinyl siding may, according to some, exhibit more resistance to the most common complaint about vinyl siding – its tendency to crack in very cold weather when it is struck or bumped by a hard object while others feel that a thinner product may allow more 'flex before cracking' and is a subject of debate. However, at "This ...