VSS_FILE_SPEC_BACKUP_TYPE enumeration. The VSS_FILE_SPEC_BACKUP_TYPE enumeration is used by writers to indicate their support of certain backup operationsâsuch as incremental or differential backupâon the basis of file sets (a specified file or files).
Blue ice (aviation) Blue ice, in the context of aviation, is frozen sewage material that has leaked mid-flight from commercial aircraft lavatory waste systems. It is a mixture of human biowaste and liquid disinfectant that freezes at high altitude. The name comes from the blue color of the disinfectant. Airlines are not allowed to dump their waste tanks in mid-flight, and pilots have no mechanism by which to do so; however, leaks sometimes do occur.
A. Dry ice is frozen carbon dioxide. It will keep perishable foods colder and longer than traditional ice. It is an excellent refrigerant for shipping, camping and bulk use. Unlike traditional ice that melts into water, dry ice turns into a gas appearing like fog or steam.. Ice should be clear in color as well as odorless and tasteless. When purchasing ice, look for bags that are properly closed and secure (no drawstring ties). The bag should carry the manufacturerâs name and address. Also look for the International Packaged Ice Associaton (IPIA) symbol.