The present invention provides novel silicon compounds, methods for making these novel silicon compounds, compositions comprising these novel silicon compounds attached to substrates, methods for attaching the novel silicon compounds to substrates and methods for using the compositions in a variety of chromatographic applications. A tensioner is provided with a mounting device for mounting the tensioner to a frame of a marquee and a connector, which connects the mounting device to a fabric to be tensioned. These data base management commands are sequentially presented to the data base management system and the intermediate products stored. An electrical power bus in the base module supplies power to computer systems of the fin modules. The mobile station apparatus includes a random access processor that, upon receipt of the control information instructing to start the random access procedure, starts the random access procedure by means of the random access resource corresponding to a specific downlink component carrier preliminarily allocated by the base station apparatus. The modular accessory is connected to the housing when the first and second housing portions are secured together to surround the portable device.