A new class of light emitting and laser diodes is disclosed wherein ballistic electron propagation along the nanotubes, grown normally to the substrate plane on the common metal electrode, provides conditions for the light emission from the nanotubes. Also provided is a tissue preserving media including storage media and pure perfluorocarbon. The request for policy authorization attempts to reserve particular network resources for a particular application context. Then, the optimizing control unit 2a updates the CAD data M of the cushioning material 4 until an optimum shape of the cushioning material 4 is detected based on the correlation. While repeating scanning of the recording head and conveying of the medium, recording is performed in band units at a printing speed of 20 to 30 ipm, and stop error precision of the medium during conveyance is X2 inches or less. The matching portion is disposed on one side of the feeding portion, and located adjacent to the first grounded portion.