Abstract: For an HEMT component, in particular on the basis of GaN, it is proposed, for the purpose of reducing field spikes in the conduction channel, in a partial section of the conduction channel between gate electrode and drain electrode, to set the sheet resistance of the conduction channel such that it is higher than in adjacent regions. Various measures for subsequently increasing the sheet resistance in an area-selective manner are specified.

Abstract: For an HEMT component, in particular on the basis of GaN, it is proposed, for the purpose of reducing field spikes in the conduction channel, in a partial section of the conduction channel between gate electrode and drain electrode, to set the sheet resistance of the conduction channel such that it is higher than in adjacent regions. Various measures for subsequently increasing the sheet resistance in an area-selective manner are specified.

Abstract: A deep soaking tub and shower combination apparatus having a side entry door and a built-in seat with armrests to allow a person to enter from the side through a hinged door with a seal that becomes tighter as the tub fills. The door has a rotating locking mechanism with a plurality of locking dogs and a lockable handle. The apparatus provides a safer tub and shower for the elderly and those persons with a limited range of bodily movement.

Abstract: In an apparatus for the surface treatment of material to be treated by means of a treatment liquid, in particular a band pickling plant, with a vessel (1) receiving the treatment liquid (F), through which the material (S) to be treated can be conveyed, with a lid (2) with which the vessel (1) can be tightly sealed, with an inlet and outlet opening (4, 5) through which the material (S) to be treated enters into and exits from the vessel (1), and with suction openings (9a, 11a) through which the evaporated treatment liquid (F) can be sucked off from the vessel (1), the quantity of the gas to be discharged is reduced in accordance with the invention and, simultaneously, the danger of damaging the material (S) to be treated is reduced without impairing the performance of the apparatus in such a way that in the zone of the inlet and outlet opening (4, 5) of the vessel (1) one inlet chamber and one outlet chamber (9, 11) are separated from the inner space (8) of the vessel (1) by at least one shut-off partition (7,

Abstract: A semiconductor laser device comprises a plurality of layers of semicondung materials, first contact means providing electrical contact to a basal layer of the device and second contact means providing electrical contact to an upper layer of the device, with at least one layer disposed between the basal layer and the upper layer being selected to be sufficiently thin that size quantization occurs, i.e. that a semiconductor device with a quantum well structure is created. The second contact means comprises a first strip-like contact overlying a first lasing region of the device and a second strip-like contact overlying a second lasing region of the device. The light losses associated with photons generated by laser action in the first region are intentionally made different from the light losses associated with photons generated by laser action in the second region which permits laser action at two distinct wavelengths in a monolithic device.

Abstract: In an apparatus capable of drying metallic belts or strands of varying widths, a hot air blowing system is arranged such that the effective width of the hot-air flow is selectively adjusted according to the width of each belt intended to be dried. The otherwise present but now excess hot air produced when narrower belt widths are dried is then directed to the suction or inlet side of the air blower to thereby recover otherwise lost heated air. This recycled heated air is redirected back to the air blower to thereby conserve energy at the heat exchanger which is used to heat the air. The quantity of hot air passing per unit time corresponding to a decreased belt width may also be adjusted by means of a valve of the blower system, thereby lowering the heating energy needed to be supplied to the heat exchanger.