The present invention provides compounds useful for the detection of the enzyme tripeptidyl protease I. The surface pad system also includes a pad core received in the interior region of the cover to support the patient. Additionally, the memory device includes a second power input to receive a second voltage. The flexible bag is made from a mesh, through which contents of the flexible bag are visible. The first sourcedrain region includes a Schottky diode junction with the body region and the second sourcedrain region includes an n-p diode junction with the body region. To accelerate call setup, checking functions are carried out during voice mode connection of the call.