A mobile device and a method for providing security to a mobile device having two or more communication domains is provided. In particular, the present invention provides a lift and mount system for mass spectrometers mass spectrometers ). 2 GHz with varying high IF range of 33 to 80 MHz. The quantum dot layer includes a plurality of quantum dots disposed on the light emitting diode to absorb a portion of the light emitted by the diode, and then emit light of a second color. The use of a network provides the means for a participation of a large number of subjects in different locations and the broadcasting of the visual andor oral presentations to a worldwide audience.