A filter device comprises a hollow cylindrical filter element in a filter housing. The stage supports an article for inspection, the article having a surface. The antenna and the RF connector are electrically connected to the circuit board. On the basis of whether the encryption code is on the list, the rider is permitted access to the facility of the transit system. The bracket provides torsional support and load bearing support between the strut and the principal rafter. The method of preparing a supported catalyst can provide a highly dispersed supported catalyst containing catalytic metal particles with a reduced average size regardless of the type of catalyst support, which provides better catalytic activity than conventional catalysts at the same loading amount of catalytic metal.