Abstract: The present invention provides systems and methods for authenticating a mobile communication device to a computer system of an automobile that does not require manual code entry, and thereby reduces the burden on the user, minimizes human errors, and provides the ability to utilize more complex digital keys an increase the security level of the connection. In particular, the systems and methods of the present invention generate a unique identifier corresponding to the automobile and locally transfer a message including or generated from this unique identifier to the mobile communication device without manual code entry.

Abstract: A process for separating ethylbenzene and styrene by distillation is described. The process provides the advantages of a vapor compression/heat pump system, and is designed in such a manner that the energy applied is optimally utilized. The head pressure of the distillation column (1) is controlled in a simple manner, whereby a surprisingly stable column is achieved.