This invention provides a method and apparatus for displaying an unscaled image frame on an LCD panel. Simultaneously, communal waste water is purified in a purification plant containing an aerobic treatment zone, wherein advanced nitrificationdenitrification andor phosphorous elimination can be activatedstarted by recycling oxygen and nitrate rich water and sludge back into the inlet area. A clamping force that acts radially from the outside onto the inserted tube can be applied by the clamping element under the action of upper and lower spring elements. The element may also be used to isolate part of the left ventricle containing a ventricular septal defect or other perforation or opening in the ventricular wall. The pairs of right and left links 1a and 1b are endlessly connected by inserting connection pins 12 to the connection parts 3. In cooperation of the present exposure technology with the present invention, the shrinkage of a critical dimension is accomplished, for example, using an I-line exposure light source in a critical dimension of 0.