Abstract: In an embodiment a method for producing an optoelectronic semiconductor component includes A) providing a semiconductor body comprising, sequentially in a vertical direction, a first layer of a first conductivity type, an active layer formed as a quantum well structure provided for emission of electromagnetic radiation, and a second layer of a second conductivity type and B) irradiating the semiconductor body with a focused electromagnetic radiation such that a focus region of the electromagnetic radiation lies within the active layer and overlaps with the quantum well structure, wherein the electromagnetic radiation has an intensity which is sufficiently large in the focus region to cause point defects in the quantum well structure so that a defect region is formed and so that a generation of the point defects is limited to the focus region, and wherein a density of point defects in the first layer and the second layer is not changed in B).

Abstract: A process for checking the air pressure in the tires of motor vehicle wheels wherein at least a pressure signal characteristic for the air pressure will be picked up as a measured signal by a measurement device located in or on the tire of each motor vehicle wheel, wherein at least.

Abstract: A tubular mold is included in a coolant container there being a tubular guide sheet arranged around the mold at a certain distance therefrom, the coolant flows through the gap between the mold and the guide sheet; as specific improvement the upper portion of the mold has grooves cut into the outside to be flown though by water offering therefore a relatively enlarged cooling surface as compared with the remainder of the configuration of the mold underneath, the guide sheet has a radially inward extension such that water is forced into and through the grooves; these grooves are provided in the area in which the liquid bath level is expected to occur in the mold.

Abstract: Apparatus for locating sources of sound in water, including a hydrophone system which is suspended from a buoy after being dropped into the water and whose one given reference axis is automatically aligned with the magnetic field of the earth by mechanically coupling the hydrophone system with a compass magnet (north reference). The hydrophones of the hydrophone system are electrically connected with a switching or control box by means of transmission wires which are insulated with an elastic plastic and pass freely through the water and the hydrophone system is mechanically fastened to the switching box to be rotatable in a recoilless manner about an axis which is perpendicular to the surface of the earth. The control box is in turn connected to the buoy by means of an elastic suspending cable and an electrical connecting cable.