Abstract: In order to regenerate an activated carbon filter which is seated in a tank vent line, during idling of the internal combustion engine the regeneration valve is brought into the maximum open position, and the throttle valve is simultaneously opened slightly. This produces a higher air mass flow in the intake tract of an internal combustion engine, and the proportion of hydrocarbons introduced by the regeneration remains constant. In order to keep the idling speed of the internal combustion engine constant, a torque reserve is built up, for example by adjusting the ignition angle.

Abstract: An integrated circuit includes a terminal supplying a digital signal, a controllable driver circuit connected to the terminal and outputting the digital signal, and a comparator device. An actuating circuit actuates the driver circuit as a function of a clock signal. The comparator device compares the timing of signal transitions of the clock signal with transitions of the digital signal. The comparator has a first comparator input for receiving the clock signal and a second comparator input connected to the driver output for receiving the digital signal. The comparator device outputs an output signal having a first state if a signal transition of the clock signal at the first input takes place before a signal transition of the digital signal at the second input, and outputs a second state if the clock signal transition takes place after digital signal transition. In a test mode, the invention compares the clock and digital signal timings with a high degree of accuracy.

Abstract: A device for measuring the height of a sheet pile by using a reflectively operating radiation detector, a sheet separating device and a device for conveying separated sheets to a printing machine being assigned to the pile, comprising a system for measuring the propagation time of a radiation pulse originating from a radiation source and reflected at a sheet surface, the amplitude of the pulse being within a predefined range and lower than the amplitude of the reflection of the same radiation pulse at the surface of the sheet located closest to the radiation source, the radiation detector being connected to the measuring system.

Abstract: An integrated memory has a first operating mode, in which, during each write access, only one of the two global amplifiers is active and transmits a datum via one of the local amplifiers to the corresponding bit line. Moreover, the memory has a second operating mode, in which, during each write access, both global amplifiers are simultaneously active and transmit a common datum via in each case at least one of the local amplifiers to the corresponding bit lines.

Abstract: Method of influencing ink-trapping behavior of ink-conducting components of a printing unit in a rotary printing press includes disconnecting at a clutch location an inking-unit drive coming from printing-unit cylinders, directly imaging a printing form on a printing-form cylinder within the rotary printing press, and reestablishing the drive connection between the inking unit and the printing-unit cylinders at the clutch location after completing the direct imaging of the printing form; and device for performing the method.

Abstract: An apparatus for measuring the ability of ameboidally mobile cells to migrate has a deposit of active substance in the form of a plate, a membrane filter disposed on the deposit and one or more vessels on the filter. The vessel or vessels have a base opening, for a liquid which contains ameboidally mobile cells. The base opening in the vessel bears against the membrane filter. A surface area of the membrane filter is at least 1.6 times as large as the area of the base opening in the vessel.

Abstract: A capacitive actuator is driven with a control signal st. The duration ti of actual actuator actuation is compared with the duration tst of the control signal st. Proper operation is determined, and the actuator is assumed to be operating correctly, if the measured duration ti is within a range determined by the duration tst of the control signal.

Abstract: A turbine shaft, in particular for a steam turbine, is oriented along an axis of rotation. The turbine shaft has a first region with a maximum radius R1 and a second region adjoining the first region and having a maximum radius R2>R1. The first region includes a first base material for use at a temperature of over 550° C. and the second region includes a second base material for use at a temperature below 550° C. An alloy steel used for the first and the second base materials in each case has a chromium content of between 8.0% by weight and 12.5% by weight at a substantially identical austenitizing temperature. A method is provided for producing the turbine shaft.

Abstract: A sensor assembly is formed by attaching a micromechanical semiconductor sensor in a housing. The micro-mechanical sensor is secured to the housing by a gel, which leads to a particularly favorable isolation between the micromechanical sensor and the housing.

Abstract: A memory cell configuration has word lines and bit lines running transversely with respect thereto. Memory elements with a magnetoresistive effect are respectively connected between one of the word lines and one of the bit lines. The memory elements are disposed in at least two layers one above the other.

Abstract: An ink fountain in a printing machine with an ink fountain foil lying on a base of the ink fountain includes an ink metering device having a plurality of metering elements covered by the ink fountain foil, and a device for firmly holding directly on the base of the ink fountain, an underside of the ink fountain foil lying on the base of the ink fountain, and a method for securely fixing the ink fountain foil in the ink fountain.

Abstract: Although hitherto known machine frameworks of O-form are sufficiently stable, they can only be installed subsequently in an assembly station if a conveying belt is disengaged, a belt section is removed, a framework is assembled with the removed belt section, and the two are reintroduced together into the assembly station. Although the machine framework of C-form construction can subsequently be pushed onto the transporting system formed of the conveying belts, it is necessary, for stability reasons, for them to be made of considerably thicker material than the O-frameworks. The intention is therefore to specify a process, for constructing an assembly installation, for which a machine framework of O-form is sufficient and which nevertheless contains the subsequent-fitting advantages exhibited by the C-form. For this purpose, transverse struts of the machine framework are removed. They are fastened on the underside of a conveying-belt section.

Abstract: A method and an apparatus for improving the voltage quality of a secondary power supply unit uses a compensation device with a pulse-controlled power converter which is connected serially to a transmission line through the use of a coupling transformer. Positive and negative phase-sequence system deviations are determined and a basic transmission ratio space-vector is generated from them. Control signals for a pulse-controlled power converter are generated from the basic transmission ratio space-vector through the use of the link voltage of the pulse-controlled power converter. As a result, a compensator voltage is connected serially into the transmission line. A power system voltage of an ideal power supply system is thus generated for a secondary power supply unit from a distorted power system voltage.

Abstract: The imprint printing system allows imprinter head changes on the run. A printing roller, either an offset or a flexo printing roller, has an axial channel in which one or more imprinter heads are disposed. The imprinter heads can be selectively raised out of the channel so that the print surface projects radially above the periphery of the printing roller. In a variation of the basic concept, the imprinter heads are also axially movable along the axial channel. The individual heads can thereby be brought into a printing section defined by the location at which the product is to be imprinted. The respective imprinter head is raised for printing only in the printing section, while the other heads are withdrawn into the channel.

Abstract: In a method for regenerating a NOx storage catalytic converter disposed in an engine exhaust operating with air excess, in operating ranges, the improvement includes storing NOx in the exhaust gas in the converter in a storage phase and catalytically converting the stored NOx in a regeneration phase. The signal of the NOx sensor disposed downstream of the converter is detected in the operating range of the overrun fuel cut-off and an average/minimum value is formed from the individual measured values. The average/minimum value is stored as an offset value of the sensor signal. In operating ranges beyond the engine overrun fuel cut-off, the signal of the NOx sensor is detected and the offset value is taken into account when the signal is processed further, in that the offset-corrected signal is compared with a threshold value. In the event that the threshold value is exceeded, a regeneration phase of the converter is initiated.

Abstract: A steam turbine has a turbine shaft directed along a turbine axis. A plurality of turbine stages, each include a guide-blade structure and a moving-blade configuration located axially downstream of the guide-blade structure. The guide-blade structure and the moving-blade configuration are provided along the turbine shaft. Each stage has an average reaction degree achievable between 5% and 70%. The reaction degree of at least two turbine stages is of different values.

Abstract: The invention relates to a component having a substrate and a ceramic heat-insulating layer which is arranged thereon. This heat-insulating layer has a columnar structure having ceramic stems which are essentially oriented mainly normal to the surface of the substrate and have a respective stem diameter of less than 2.5 &mgr;m. The invention also relates to a coating apparatus for producing a heat-insulating layer on a substrate and to a method of coating a substrate in the manner of a reactive gas-flow sputtering method.

Abstract: The optoelectronic semiconductor component has an optoelectronic semiconductor chip disposed on a chip carrier with an approximately planar chip carrier surface. The semiconductor chip is fastened with predetermined alignment of its optical axis. A plastic base part supports the chip carrier. The semiconductor chip is electrically conductively connected to at least two electrode terminals routed through the base part, and a lens is disposed above the semiconductor chip on top of the base part. The lens is formed with an independently configured cap produced from plastic material. The cap is mechanically form-locked to a support of the base part. When the cap is placed onto the base part, a holder of the cap and the support engage with one another. The holder and the support are configured such that when the cap is placed onto the base part, the two parts are automatically positioned with respect to one another in such a way that the optical axes of the lens and of the semiconductor chip coincide.