In a process for the catalytic NOx reduction in oxygen-containing exhaust gases of a thermal engine in one or several reduction catalytic converters, hydrocarbons of the fuel of the thermal engine are used in the reduction catalytic converter. A QA user may request tokens, card types and other data associated with a payment device for quality assurance purposes. The bead is adhered to the outer surface of the shaft and has a length that is greater than its width. Inclination is achieved by the contemporaneous forward sliding of the back portion and the seat portion of the chair relative to the fixed seat frame. Accordingly, not only is the recording density maximized, but the HDD can be small and light as well.