United customers can look forward to the following functions in the app: 1  Book flights and manage their MileagePlus and OnePass accounts. 2  Check in. 3  Access mobile boarding passes with one touch.  Get flight status/ 1 updates. Follow United's Twitter feed for up-to-the-minute updates on the airline.  Interactive airport maps.
Supernatant Definition - The supernatant is the clear liquid that lies above the solid residue after centrifugation, precipitation, crystallization or... Supernatant Definition - The supernatant is the clear liquid that lies above the solid residue after centrifugation, precipitation, crystallization or...
Supertype is an entity type that has got relationship (parent to child relationship) with one or more subtypes and it contains attributes that are common to its subtypes. Subtypes are subgroups of the supertype entity and have unique attributes, but they will be different from each subtype. Supertypes and Subtypes are parent and child entities respectively and the primary keys of supertype and subtype are always identical. E.g.