Abstract: Torque transmitted via a drive shaft of a motor is contactlessly determined using organic magnetoresistive semiconductor element, unlike known torque sensors that can generate greatly fluctuating measurement signals even at a constant torque. The organic magnetoresistive semiconductor element is mounted on a drive shaft or a coupling thereof. For this purpose, a field generator is provided, which is rigidly connected to the drive shaft or the clutch and which in the environment of the drive shaft generates a magnetic field that is dependent upon the torque. In the environment, the OMR semiconductor element is arranged to be stationary. The OMR semiconductor element has two electrodes between which a voltage source generates an electrical voltage.

Abstract: The invention relates to a method for producing a resistance heating element and also to a resistance heating element (10), wherein the resistance heating element has a tubular shape, wherein the resistance heating element is formed in one piece, wherein the resistance heating element is produced from silicon carbide, the method comprising at least the following method steps: forming a one-piece molded body from a powder of a sintering material, wherein the powder is pressed, annealing the pressed molded body, pyrolyzing the material of the molded body, and sintering the molded body, wherein the molded body is formed into the resistance heating element.

Abstract: A method and a device for determining the flow rate of magnetic or ferromagnetic particles in a suspension that flows through control chambers are provided. The magnetic flux F1 is measured as a function of time t using a measuring coil that surrounds a first control chamber, the magnetic flux representing a measurement, at a particular time, of the quantity of magnetic particles contained in the suspension. In a second control chamber, at a predetermined distance d from the first control chamber, the magnetic flux F2 is measured as a function of time t using a second measuring coil that surrounds the second control chamber and the measurements F1 (t) and F2 (t) are compared to produce a temporal distance ?t which is used together with the predetermined distance d to calculate the flow rate. The method and device can be used, for example, in an ore mining installation.

Abstract: An apparatus is disclosed for identifying magnetically marked micro objects, in particular biological micro objects, preferably tumor cells. In at least one embodiment, the apparatus includes a carrier for at least one micro object; a device for applying a region with a magnetic gradient field, wherein the gradient field comprises at least one zero point; a device for applying the micro object with a high frequency magnetic field, in particular at the site of the zero point; a device for relative movement of the carrier and region to one another; a device for receiving a change in a magnetic flux through the micro object; a device for evaluating the received change in the magnetic flux and for identifying the position of the micro object; and a device for in particular automatically analyzing the micro object.

Abstract: A robot system is disclosed which includes at least two robots, each having a related processing unit. The processing units are connected to each other via a network bus for data transmission, and distributed sensors are provided for gathering first and/or second measurement data within a local extension of the robot system. First measurement data gathered by at least one first sensor are transmissible to at least one processing unit related thereto. Second measurement data gathered by at least one second sensor are feedable into the network bus and provided to the at least two processing units connected thereto. The processing units can analyze the second measurement data as a variable dynamic share of workload for feeding result-data of the analysis into the network bus.

Abstract: A flow cytometer has a flow chamber in which labeled cells are highly likely to be detected by a corresponding sensor as a medium carrying the magnetically labeled cells flows through the flow chamber. The flow chamber has at least one sensor positioned on an inner surface thereof to detect the cells. The flow chamber also has a magnetic or magnetizable cell guiding device which can be positioned upstream of the sensor in the direction of flow to guide the flowing, magnetically labeled cells directly across the sensor, so that only a small percentage of labeled cells pass outside of the reach of the sensor.

Abstract: Magnetically labeled cells in a flow chamber cytometer are detected by a GMR sensor. The flow chamber includes a cell guiding device having at least one first and one second magnetic or magnetizable flow strip. The flow strips, which serve to guide the flowing cells across the sensor in a target-oriented manner, are mounted at a distance from each other such that a magnetic field BF is produced between them. The GMR sensor is arranged in the region of the magnetic field BF between the flow strips such that the magnetic field BF can be used as the operating magnetic field BGMR of the GMR sensor. In this way, the need for additional magnets for operating the GMR sensor is eliminated.

Abstract: A method for the production of a ceramic substrate for a semiconductor component, includes the steps of producing paper containing at least cellulose fibers, as well as a filler to be carbonized and/or SiC, pyrolizing the produced paper, and siliconizing the pyrolyzed paper.

Abstract: A robot system is disclosed which includes at least two robots, each having a related processing unit. The processing units are connected to each other via a network bus for data transmission, and distributed sensors are provided for gathering first and/or second measurement data within a local extension of the robot system. First measurement data gathered by at least one first sensor are transmissible to at least one processing unit related thereto. Second measurement data gathered by at least one second sensor are feedable into the network bus and provided to the at least two processing units connected thereto. The processing units can analyze the second measurement data as a variable dynamic share of workload for feeding result-data of the analysis into the network bus.

Abstract: A support for structural components that are subjected to a thermal treatment process. The support includes a frame having limbs and extending therefrom a grid of intersecting strands. In order to prevent the support from warping even when subjected to strong thermal loads or variations in temperature, the frame is produced from a temperature-resistant material and the strands are produced from carbon fibers or ceramic fibers that form the grid, extending from the limbs of the frame.

Abstract: The invention relates to a method for the manufacture of a ceramic component of desired final geometry using at least a cellulose-containing semi-finished moulded part, which is pyrolysed in non-oxidizing gas atmosphere. In order to manufacture complex components, it is suggested that at least two semi-finished moulded parts are firmly joined either in raw form or after at least partial carbonisation. The joined moulded parts are subsequently machined to achieve the desired final geometry or a geometry corresponding to the desired final geometry plus the machining allowance. Then, the carbon parts are available after carbonisation of the moulded parts in non-oxidizing atmosphere. Alternatively, these can be converted into a CMC composite material in a non-oxidizing gas atmosphere by a metal infiltration process with simultaneous reactive joining of at least two moulded parts.

Abstract: Aqueous dispersion containing a metal oxide powder with a fine fraction and a coarse fraction, in which—the metal oxide powder is silicon dioxide, aluminum oxide, titanium dioxide, zirconium dioxide, cerium oxide or a mixed oxide of two or more of the aforementioned metal oxides,—the fine fraction is present in aggregated form and has a mean aggregate diameter in the dispersion of less than 200 nm,—the coarse fraction consists of particles with a mean diameter of 1 to 20 ?m, —the ratio of fine fraction to coarse fraction is 2:98 to 30:70, and—the content of metal oxide powder is 50 to 85 wt. %, referred to the total amount of the dispersion. The aqueous dispersion is produced by a process comprising the steps:—production of a fine fraction dispersion by dispersing the pulverulent fine fraction in water by means of an energy input of at least 200 KJ/m3?, and—introducing the coarse fraction in the form of a powder into the fine fraction dispersion under dispersing conditions at a low energy input.

Abstract: A method for the production of a carbon or a ceramic component based on carbon, using a cellulose-containing semi-finished molded piece which is pyrolyzed. According to the invention, homogeneous large-size ceramic components may be produced, whereby a cellulose-containing, semi-finished molded piece containing fibers, chips or strands of homogeneous density distribution and homogeneous structure is used as semi-finished molded piece and is pyrolyzed in non-oxidizing gas atmospheres.

Abstract: A method for the production of a ceramic substrate for a semiconductor component, includes the steps of producing paper containing at least cellulose fibers, as well as a filler to be carbonized and/or SiC, pyrolizing the produced paper, and siliconizing the pyrolyzed paper.

Abstract: At least one embodiment of the invention specifies a current-sensing apparatus and/or a method for its operation which is based on the current sensor provided being a GMR sensor in the form of a gradient sensor and on the gradient sensor, or a component which includes this gradient sensor, itself including a conductor section of a compensating circuit. As such, the current in the measurement circuit can be compensated for by a current in the compensating circuit and the compensating current can be evaluated as a measure of the electrical variable to be detected for the measurement circuit.

Abstract: The invention relates to a pressure-resistant body (10), such as a pressure pipe or pressure container, consisting of a steel base body (12), a first layer (14) of a ceramic fiber composite that surrounds the exterior of the base body and at least one second layer (16) of a fiber-reinforced plastic and/or a fiber-reinforced ceramic that is situated on the first layer.

Abstract: The invention involves a rotary anode of an x-ray tube with a cooling element of carbon fiber material constructed so as to be rotationally symmetrical around a coaxial rotation axis. In order to achieve a high heat conducting capability, it is recommended that the base of the cooling element (14) be a preform constructed according to the tailored fiber placement process (TFP), that the cooling element have a hollow cylinder and a one-piece construction, that the carbon fibers (22) run parallel along its entire length or basically parallel to the axis (16) and have a heat conductivity ? with ?>/=250 W/m×K, and that the carbon fibers be connected across a matrix containing carbon whose graphite crystallites are aligned along the carbon fibers.

Abstract: A portable personalized tracker card is provided. The tracker card may be a patient tracker card.

Abstract: The invention relates to a method for manufacturing a highly heat-conductive heat sink from carbon material, in particular, a rotatable anode heat sink of an X-ray tube, comprising an anode body rotatable on a rotational axis with a focal ring that runs perpendicularly to the axis and is heat conductively connected to the heat sink. To achieve a higher degree of heat conductivity than that of prior art heat sinks, the invention proposes that for making a heat sink a mixture of carbon nanotubes and a binder is molded and subsequently heat-treated.

Abstract: Aqueous dispersion containing a metal oxide powder with a fine fraction and a coarse fraction, in which—the metal oxide powder is silicon dioxide, aluminium oxide, titanium dioxide, zirconium dioxide, cerium oxide or a mixed oxide of two or more of the aforementioned metal oxides,—the fine fraction is present in aggregated form and has a mean aggregate diameter in the dispersion of less than 200 nm,—the coarse fraction consists of particles with a mean diameter of 1 to 20 ?m,—the ratio of fine fraction to coarse fraction is 2:98 to 30:70, and—the content of metal oxide powder is 50 to 85 wt. %, referred to the total amount of the dispersion. The aqueous dispersion is produced by a process comprising the steps:—production of a fine fraction dispersion by dispersing the pulverulent fine fraction in water by means of an energy input of at least 200 KJ/m3?, and—introducing the coarse fraction in the form of a powder into the fine fraction dispersion under dispersing conditions at a low energy input.