Abstract: An in vivo screening assay for identifying an agent that interferes with T cell activation and/or -differentiation and/or modulation of other inflammatory effector cells.

Abstract: A system and a method for functionally testing fast semiconductor memory chips. The data shifting method proposed here is based on the fact that a low speed tester writes data and data strobe test patterns to a memory block with a low clock frequency. The connection between the tester and the memory chip is subsequently disconnected for all the data and data strobe lines. This can be done by a relay or integrated circuits on an external circuit board or by test modes in the output circuit of the memory chip, that is to say on-chip. The data and data strobe lights are subsequently divided into two groups of the same size and connected to one another. The data and data strobe test pattern written to the first memory block is then shifted with a high clock frequency into a second memory block, from where it is then shifted back into the first memory block in a further read-write cycle with the high clock frequency.

Abstract: In a configuration for checking an address generator, a memory apparatus is configured such that it can store values of address signals that are present on lines of an address bus. The stored values can then be output to at least one access point where the values are provided for further evaluation.

Abstract: For testing high-speed semiconductor memory devices (1) with a high data transfer rate, for instance DDR-DRAMs, controller modules (24) are provided in or as a constituent part of test receptacles (2) that are to be populated by a supply and handling system (3), said controller modules functionally essentially corresponding to customary graphic controllers. Components of the DRAMs (1) which determine the data transfer rate thereof are tested by means of the controller modules (24) at the supply and handling system (3), which is suitable for the high-volume throughout the DRAMs (1).

Abstract: For testing high-speed semiconductor memory devices with a high data transfer rate (such as DDR-DRAMs), in receiving units of supply and handling systems for tester apparatuses, selected graphic controllers are arranged on test assemblies, which are substantially structurally identical to graphics cards, and are connected via connecting lines to test receptacles for receiving the DRAMs. Components of the DRAMs that determine the data transfer rate thereof are tested by means of the graphic controllers at the supply and handling system.

Abstract: The imaging system provides assistance during the positioning of a measuring tip as it is placed onto a contact region of a microchip, in order to measure an on-chip signal. The contact region is imaged in a magnified fashion. An insertion device is provided that is suitable for providing a display of the on-chip signal in the imaging plane.

Abstract: An extrudable gypsum plaster paste is disclosed comprising: &agr; gypsum plaster, water in a substantially stoichiometric amount; a binder; and a clay or another rheology modifier functionally equivalent to a clay. Such pastes can have a yield stress sufficient to make the paste self supporting. The invention also provides a method for making an extrudable gypsum plaster paste comprising: mixing &agr; gypsum plaster, water in a substantially stoichiometric amount and a binder; and mixing into that mixture a clay or other rheology modifier functionally equivalent to a clay.

Abstract: A planar lightwave circuit (PLC) (1; 20) comprises an optical device, where the optical device comprises at least one piece of waveguide structure (5; 24), in particular one piece of fiber, which has at least one thin film layer deposited on an end facet (9; 28). Thus, a thin film filter can be integrated in a PLC with minimized insertion loss and high mechanical stability for athermalization.

Abstract: In a configuration for checking an address generator, a memory apparatus is configured such that it can store values of address signals that are present on lines of an address bus. The stored values can then be output to at least one access point where the values are provided for further evaluation.

Abstract: A system and a method for functionally testing fast semiconductor memory chips. The data shifting method proposed here is based on the fact that a low speed tester writes data and data strobe test patterns to a memory block with a low clock frequency. The connection between the tester and the memory chip is subsequently disconnected for all the data and data strobe lines. This can be done by a relay or integrated circuits on an external circuit board or by test modes in the output circuit of the memory chip, that is to say on-chip. The data and data strobe lights are subsequently divided into two groups of the same size and connected to one another. The data and data strobe test pattern written to the first memory block is then shifted with a high clock frequency into a second memory block, from where it is then shifted back into the first memory block in a further read-write cycle with the high clock frequency.

Abstract: A method for testing an electronic module having a memory cell device includes writing an information item to the memory cell device at a first clock frequency and then reading-out the information item from the memory cell device at a second clock frequency. The read out information item is reflected at a reflection point and is written back to the memory cell device at the second clock frequency. The reflected information unit is then read-out from the memory cell device wiht the first clock frequency.

Abstract: The imaging system provides assistance during the positioning of a measuring tip as it is placed onto a contact region of a microchip, in order to measure an on-chip signal. The contact region is imaged in a magnified fashion. An insertion device is provided that is suitable for providing a display of the on-chip signal in the imaging plane.

Abstract: In a method and apparatus for determining the circumference of a finger or toe joint, in particular a proximal interphalangeal joint, to be evaluated in the context of an arthritis examination of an examination subject, the joint is irradiated using a light source and at least one two-dimensional projection image is recorded using a camera apparatus. From the projection image, the diameter of the joint is determined by means of an automatic edge detection method, and the circumference is calculated on the basis of the diameter. Additionally, a diaphanoscopic examination of the joint can be made with the same apparatus, and the results combined with the diameter information to identify or monitor a degree or progress of the inflamation.

Abstract: A sheet brake improves laying sheets off onto a stack in the take-off unit of a sheet-fed rotary printing press. The sheet brake is provided with a crank drive that generates a back-and-forth stroke by way of a synchronized drive mechanism at the rate traveled by the sheets. The rear portion of each sheet is forced by suction against a suction strip provided on the brake so that the sheet is braked while being stretched and then lowered onto the top of the stack. The suction strip has a groove arranged such that the sheet is braked and stretched as the suction strip works in conjunction with an operation of a take over gripper to accurately guide the sheet to the stack.

Abstract: An optical duplexer, configured as a directional coupler, is integrated into an optical coupling arrangement with a fiber optic pigtail, constructed in planar-optical hybrid technology on a substrate (1). To reduce the required surface area and decrease optical cross talk, the branch of the directional coupler (waveguide 6, branch 7) is sharply bent. The bend is equipped with a reflecting mirror (11) integrated opposite the inner edge (10) of the bend. Furthermore, the waveguiding end of the bent branch (7) is equipped with a cylindrical lens. A laser diode (8) is located before this, and a photodiode (5) is located before the angled end of the straight-line integrated waveguide (2).

Abstract: A process for the production of an epitaxially coated semiconductor wafer, composed of a substrate wafer of monocrystalline silicon having a front side and a rear side, has at least one layer of semiconductor material which is epitaxially deposited on the front side of the substrate wafer and which is obtained by production of a heavily doped silicon monocrystal by crucible-free zone pulling, production of a substrate wafer having polished front side from the monocrystal and deposition of at least one epitaxial layer of semiconductor material on the front side of the substrate wafer.

Abstract: A circuit arrangement is presented for an optical modulator with an optical modulator diode (MD) driven in the blocking direction which, in addition to a shunt resistor (RN) wired in parallel with the modulator diode, contains a damping resistor (RD) wired ahead of the modulator diode, for attenuating unwanted reflections. The damping resistor is preferably wired ahead of the parallel circuit of modulator diode and shunt resistor, and forms part of the terminal resistance of the connecting line carrying the modulation signal (U.sub.m).

Abstract: A sheet-guiding apparatus for a turning device in a rotary printing machine guides a sheet being printed to prevent smearing. The turning device includes a turning drum and at least one sheet-guiding cylinder. The turning drum and the sheet-guiding cylinder define a sheet transfer region and a sheet transfer path. The sheet-guiding apparatus comprises an air blower means, at least one blower/suction device, and a lower sheet-guiding device. The air blower means, which is arranged upstream of the sheet transfer region, includes a first set of air outlet openings for directing compressed air toward the sheet-guiding cylinder and at least a second air outlet opening for directing compressed air into the transfer region. The blower/suction device, which is disposed within the sheet-bearing surface of the turning drum, communicates with a plurality of openings disposed in the sheet-bearing surface and is coupled to a pneumatic device.

Abstract: An apparatus for cleaning a roller nip in rotary printing machines, which is filled with a fluid, includes at least one nozzle arranged above the liquid in the nip with the nozzle oriented at an angle (.alpha.) with respect to the longitudinal direction of the nip so as to be directed towards the fluid. Blowing air is fed to the nozzle via a control valve and causes the fluid to flow along the nip and off at least one end of the rollers.

Abstract: A method and system are provided for aligning the lateral edge of sheets fed to a printing press. The lateral position of a sheet is detected. A slidable suction device beneath the sheet is operated to pull the sheet toward a lateral abutment at a constant speed, the suction being applied at an individual time for each sheet in accordance with the detected position. Suction pressure is released when the sheet reaches the side lay, such that suction pressure is only applied for the time necessary to place the sheet in proper registration.