Abstract: A transportable flat X-ray detector includes a housing with a grip and an active surface with a scintillator layer and semiconductor layer including a multiplicity of pixel elements arranged in a matrix. Further, gripping elements such as gripping holes, depressions, pits or gripping troughs are provided in the housing at the edge of the flat X-ray detector, outside the active surface.

Abstract: A mobile x-ray acquisition system has a cart on which is arranged an articulated arm that has a free end at which an x-ray source is carried. Also arranged on the cart is an image evaluation device. An image storage medium can be inserted into the image evaluation device. The image storage medium contains image information generated by an x-ray exposure, and the image information stored in the image storage medium can be imported into the image evaluation device and evaluated therein.

Abstract: A transportable flat X-ray detector includes a housing with a grip and an active surface with a scintillator layer and semiconductor layer including a multiplicity of pixel elements arranged in a matrix. Further, gripping elements such as gripping holes, depressions, pits or gripping troughs are provided in the housing at the edge of the flat X-ray detector, outside the active surface.

Abstract: For collection of dust from gases at temperatures up to 900.degree. C. and under presssures up to 20 bars by means of gas-permeable two-dimensional filter elements, an apparatus is proposed which comprises a pressure-resisting cylindrical outer housing, which contains a gas-tight pear-shaped inner housing, which is movably mounted in the outer housing by a means of a heat-insulating carrying structure and is provided with a tubular gas-outlet port and comprises a cambered bottom, which contains cylindrical filter elements. A pressure-confining gas-tight compensator is provided between the tubular gas-outlet port of the inner housing and the outer housing. Because the "pressure-confining" and "supporting" functions are separate, the internal components, which will be subjected to temperatures up to 900.degree. C., can be joined to the pressure-confining wall of the outer housing, which must not be heated above 200.degree. C.

Abstract: A reactor for gasifying solid fuels, particularly coal, comprises with the fixed bed of fuel at least one stirring arm, which is rotatable about a vertical axis and is approximately triangular in cross-section. The forward knife edge and the rear crushing edge of the stirring arm are provided with replaceable armoring. The armoring at the knife edge consists of a plurality of armoring elements (7), which are approximately V-shaped in cross-section and are arranged one beside the other so as to define an expansion joint. The armoring at the crushing edge consists also of a plurality of elements (10), which are mounted on the stirring arm so as to be movable at ambient temperature.