A sectional upward acting door includes interconnected door panels which are formed with generally planar outer and inner wall parts and upper and lower edges which cooperate to provide a pinch resistant joint between door panels when they are pivoted relative to each other. A flexible cylindrical elastomeric medical gas tubing has an input end with a bushing making a flush abutment with the male outlet at the output orifice. The flow rate control valve controls the hydrogen released from the hydrogen cans that absorbs the heat generated by the CPU rapidly for heat exchange. The sleeve engages a long section of the outer surface of a receptacle thereby preventing rocking or lateral motion of a receptacle septum relative to a needle tip. A control bar is operable to set a desired forward speed of the mower via engagement of a cam and the linkage assembly providing directional and speed control for the mower. The holographic recording medium includes, in a substantially identical plane, a white-light reconstruction holographic recording layer region capable of forming a white-light reconstruction hologram, having a thickness of 2 \u03bcm to 80 \u03bcm, and a Fourier holographic recording layer region capable of multiplexed hologram recording, having a thickness of 100 \u03bcm to 2 cm.