Abstract: A friction body of porous carbon, which is infiltrated with silicon and reinforced with carbon fibers, includes at least one separate friction layer on a core body. In order to protect the friction layer against damage by outbreaking, carbon fibers in the friction layer are shorter than carbon fibers of the core body. Accordingly, different possibilities for producing a friction body with short fibers in the friction layer are possible.

Abstract: A system and method is described for identifying T cell and other epitopes and the like.

Abstract: The invention relates to the use of one or more compounds selected from the compounds of formulas (Ia) and (Ib), to the physiologically compatible slats of compounds of formulas (Ia) and (Ib), and to the stereoisomeric forms of the compounds of formulas (Ia) and (Ib), whereby R1, R2, R3, R4 and n have the meanings cited in Claim Nr. 1. The compounds are used for producing a cosmetic formulation. The compounds are, for example, advantageously used for protecting cells, proteins and/or biomembranes of the human skin, for protecting the microflora of the human skin, for stabilizing the skin barrier, and/or for ameliorating effects of surfactants.

Abstract: The device for machining by electroerosion comprises an electrode-tool (EO) and an electrode-workpiece (EP) constituting the opposite poles of a working gap (GA) and an electrical circuit with a double voltage source (UD) connected to a supply network (A) arranged so as to produce erosive discharges between the electrode-tool (EO) and the electrode-workpiece (EP). This double voltage source (UD) comprises a first (U1) and a second (U2) voltage source connected galvanically to each other by their poles. This double source (UD) is connected to the working gap by at least four separate branches (B1 to B4) of which at least one comprises a self-induction element (L1, L1). Switching means (SW1, SW2) permit producing by selective connection of said branches at least two increasing current slopes and at least two decreasing current slopes.

Abstract: The use of one or more compounds chosen from the compounds of the formulae Ia and Ib the physiologically compatible salts of the compounds of the formulae Ia and Ib and the stereoisomeric forms of the compounds of the formulae Ia and Ib, where R1, R2, R3, R4 and n have the meanings given in claim 1, for the preparation of a cosmetic formulation is advantageously suitable, e.g., for protecting cells, proteins and/or biomembranes of the human skin, for protecting the microflora of the human skin, and/or for stabilizing the skin barrier.

Abstract: The present invention relates to cleaning compositions which comprise the insect repellent ethyl 3-(N-butylacetamino)propionate and the use of this insect repellent in all types of cleaning compositions for repelling insects. This invention furthermore relates to a method for cleaning and for simultaneously repelling insects in which cleaning compositions comprising ethyl 3-(N-butylacetamino)propionate are used.

Abstract: An oxidation-protected brake disk is made of a fiber-reinforced ceramic material. A method of producing such a brake disk comprises applying at least one paint layer to a brake disk. In order to reduce damage to the brake disk under extreme thermal stress, the brake disk is provided with a layer of a highly temperature-stable paint that is viscous at the operating temperature of the brake disk.

Abstract: The present invention relates to cleaning compositions which comprise the insect repellent ethyl 3-(N-butylacetamino)propionate and the use of this insect repellent in all types of cleaning compositions for repelling insects. This invention furthermore relates to a method for cleaning and for simultaneously repelling insects in which cleaning compositions comprising ethyl 3-(N-butylacetamino)propionate are used.

Abstract: A method of monitoring the service life of a ceramic brake disk, in which the load of the brake disk is computed by way of the actual sensed braking and driving dynamic characteristics and is compared with a definable reference value for the service life.

Abstract: A device can indicate the total load of a brake disk made of carbon-fiber-reinforced ceramic material. In order to create such a device, which can be used for brake disks and other friction elements made of carbon-fiber-reinforced ceramic material, an indicator element can be provided in the brake disk starting from the friction surface. The oxidation stability of this indicator element is reduced with respect to the material of the brake disk.

Abstract: A friction body of porous carbon, which is infiltrated with silicon and reinforced with carbon fibers, includes at least one separate friction layer on a core body. In order to protect the friction layer against damage by outbreaking, carbon fibers in the friction layer are shorter than carbon fibers of the core body. Accordingly, different possibilities for producing a friction body with short fibers in the friction layer are possible.

Abstract: The invention related to powder mixtures containing formaldehyde- and/or formic acid-releasing compounds which have skin-tanning properties, which powder mixtures contain an agent which forms sulphite ions and, if appropriate, a stabilizer, and to the preparation and use of these powder mixtures for manufacturing cosmetic or pharmaceutical preparations.

Abstract: In the process of machining by electroerosion, there is adjusted during a first transitory phase the machining current increase of the discharges after triggering a discharge between the electrode and the piece, such that a parameter connected to this increase will be substantially equal to a reference value corresponding to a minimum wear value of the electrode. Then, the machining current is maintained during a second phase at a reference value. The adjustment is carried out by acting on the adjustable internal voltage of a low impedance adjustable voltage source connected between the electrode and the piece. The adjustment can be carried out by a servo control loop with a regulator of the internal voltage, a device for generating discharges, parts adapted to determine the slope of increase of the current of a discharge, a member determining the mean slope of N discharges and a member adapted to compute the difference between the mean slope and a pre-established reference slope.

Abstract: A brake disk made of a fiber-reinforced material includes two assembled friction rings. The friction rings, on interior sides, are provided with ribs. The two friction rings are supported with respect to one another along at least a portion of the ribs. In order to provide a suitable shaping of faces of the ribs, faces used as coupling faces are constructed such that a coupling of the friction rings is caused in precisely one rotating direction and, in a particular case, such that the coupling faces are arranged in an alternating manner.

Abstract: A method and an apparatus for securing e-commerce transactions include processing that begins by receiving a customer package of variables regarding a desired secure e-commerce transaction. The processing continues by validating the desired secure e-commerce transaction based on at least one item of the package of variables. If the desired secure e-commerce transaction is validated, the processing continues by generating a temporary credit card number for the desired secure e-commerce transaction based on the at least one item of the package of variables. Once the temporary credit card number is generated, the processing continues by providing the temporary credit card number for use in the desired secure e-commerce transaction.

Abstract: A brake disk for disk brakes of vehicles is made of a material of the carbon group and the brake disk is formed as a ventilated brake disk made up of two individual friction rings which are undetachably connected with one another. The two friction rings are connected with one another by way of pins which have a thickened center part and end parts which are set off thereto. The end parts are fitted into respective bores in the friction rings.

Abstract: A brake disk for a motor vehicle, particularly made of a fiber-glass-reinforced material, includes two disk elements with ribs forming air ducts, which can be connected with one another. The ribs of the disk elements have mutually corresponding hook-type connections on opposite front surfaces.

Abstract: A braking device for wheels of vehicles such as trailers includes a caliper in which brake linings are guided. Between these linings, at least one brake disk is displaceably held on driving toothing of a wheel hub. A pneumatically operable mechanical adjusting device interacts with the brake linings. The braking device includes at least one brake disk in a caliper which is fixed. On one end, the caliper is connected by a fastening element with an axle element of the vehicle. On the caliper, an enclosing housing for bearing the adjusting device is held. By way of a bearing plate, the adjusting device is also supported on the caliper. Pressure pistons of the device are guided by a one-part yoke in a jointly axially adjustable manner and can be acted upon by pressure with respect to the brake linings and the brake disks.

Abstract: A brake disk, particularly a ventilated brake disk, has at least one friction ring connected with a brake disk chamber by fastening screws. Each fastening screw is provided with a cylindrical projection which is adjoined on the end side by a threaded portion. The cylindrical projection of the fastening screw is arranged in a bore of the friction ring. The threaded portion of the screw can be screwed into the brake chamber.

Abstract: The invention relates to the use of .alpha.-hydroxyketoalkyl derivatives as light protection filters for cosmetic or pharmaceutical products, the .alpha.-hydroxyketoalkyl group being linked, if appropriate via a spacer, to a chromophoric group which has an absorption maximum in a wavelength range of between 280 and 400 nm and has a conjugated .pi.-electron system of at least 8 .pi.-electrons, and to new .alpha.-hydroxyalkyl derivatives, processes for their preparation and pharmaceutical and cosmetic formulations comprising these derivatives as light protection substances.