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...
Precipitation in chemistry refers to the creation of a solid within a solution or within another solid during the process of diffusion. During this process, the solid formed is known as the precipitate. What causes the solid to form is known as the precipitant, and the supernate or supernatant is the area above the precipitate. A powder can also be derived from this process, and it is known as a flower.