Abstract: A method for operating a monitoring system of at least one fastening device includes providing an identifier allocated to the at least one fastening device and a fastening property allocated to the at least one fastening device to a computer device of the monitoring system, and maintaining a digital twin of the at least one fastening device using the computer device by linking the identifier and the fastening property. The method further includes monitoring the at least one fastening device by evaluating the digital twin.

Abstract: The invention relates to a device for energy recovery in bicycles with a mid-mounted motor drive unit and at least one rear wheel, comprising a first component that is connected to an element of the rear wheel hub or the rear wheel, such that a rotation of the rear wheel is transmitted to the first component, regardless of the direction of rotation, an energy-transmission device interacting with the first component, a recuperation element that interacts with the energy-transmission device, and a generator that interacts with the recuperation element to recover the rotational energy of the rotational movement of the rear wheel.

Abstract: A measuring device for a fastening device includes a base body, a sensor unit configured to detect at least one fastening variable, and an interface connected to the sensor unit and configured to provide the detected at least one fastening variable to an external reading device. The interface is electrically connectable to a wireless communication unit or directly connectable to the external reading device.

Abstract: A potentiometric sensor device for measuring pH value is provided, which sensor device has two electrodes situated on a substrate and applied with the aid of thick-film technology. The two electrodes form an interdigital comb structure on the substrate. The interdigital comb structure allows the sensor device to be manufactured without a reference electrode having a glass body, so that the sensor device may easily be used where the sensor device is subjected to high mechanical loads.

Abstract: A method and a device for developing an electrochemical measuring system, in particular a sensor, is provided. A plurality of different electrode materials are applied to at least one substrate and introduced into a medium together with at least one reference electrode. Subsequently, the electrochemical potentials of the individual electrode materials in relation to the reference electrode are determined.

Abstract: A device for analyzing a materials library includes at least one radiation source for electromagnetic radiation, which is positioned in front of the materials library, and at least two flat detectors operating in parallel, which are operable using high-sensitivity resolution and of which one is sensitive to electromagnetic radiation of a first wavelength range and the other is sensitive to electromagnetic radiation of a second wavelength range. Moreover, a method for analyzing a materials library in which the materials library is simultaneously tested using at least two methods in which electromagnetic radiation of different wavelength ranges is used. The beam is split behind the materials library as a function of wavelength and is deflected in the direction of at least two flat sensors operating using high-sensitivity resolution.

Abstract: A method of producing a material library of surface areas having different properties is described, in which mixtures of substances are applied to a substrate by a combinatory method so that a combinatory system is obtained. At least two suspensions are used to produce the mixtures.

Abstract: A method and a device for developing an electrochemical measuring system, in particular a sensor, is provided. A plurality of different electrode materials are applied to at least one substrate and introduced into a medium together with at least one reference electrode. Subsequently, the electrochemical potentials of the individual electrode materials in relation to the reference electrode are determined.

Abstract: A device for analyzing a materials library includes at least one radiation source for electromagnetic radiation, which is positioned in front of the materials library, and at least two flat detectors operating in parallel, which are operable using high-sensitivity resolution and of which one is sensitive to electromagnetic radiation of a first wavelength range and the other is sensitive to electromagnetic radiation of a second wavelength range. Moreover, a method for analyzing a materials library in which the materials library is simultaneously tested using at least two methods in which electromagnetic radiation of different wavelength ranges is used. The beam is split behind the materials library as a function of wavelength and is deflected in the direction of at least two flat sensors operating using high-sensitivity resolution.

Abstract: A potentiometric sensor device for measuring pH value is provided, which sensor device has two electrodes situated on a substrate and applied with the aid of thick-film technology. The two electrodes form an interdigital comb structure on the substrate.

Abstract: A method of reducing nitrogen oxides of an exhaust gas, of an exhaust gas of a motor vehicle in particular, is described, an aqueous urea solution being fed to a reactor (42) and converted by thermal, catalytic or enzymatic treatment into a decomposition product containing ammonia and carbon dioxide and at least the ammonia is added to the exhaust gas. The aqueous urea solution contains a substance for transferring heat and for lowering the freezing point (FIG. 7).

Abstract: A ceramic-containing disperse substance is proposed, having a ceramic component, a solvent and a dispersing agent, the ceramic component being present at least largely in the form of primary particles having an average particle size of 5 nm to 50 nm. The ceramic component in the material further has a specific surface of 20 m2/g to 120 m2/g. Besides that, a method for producing this disperse substance is proposed, the ceramic starting component being submitted to a preparation step together with the dispersing agent and the solvent, by which the average particle size of the ceramic starting powder is reduced, so that the ceramic-containing disperse substance is created. The proposed disperse substance is suitable, together with an additionally added binding agent and a plasticizer, especially for use in thick-film pastes such as the ones used in screen-printing methods or for the production of ceramics fired in a post-firing method.

Abstract: A prepolymer, which contains at least one linear polymerizing monomer and one photoinitiator, and one dielectric material, which is produced in particular from one such prepolymer by polymerization, is used to provide a structurable prepolymer and a thermostable, moisture insensitive and low-loss dielectric polymer material producible therefrom and having low dielectric losses (tan &dgr;), for high-frequency and microwave circuits in particular.

Abstract: A device for mixing at least two substances, for example, two fluids, includes a mixer housing having a mixing chamber, in which a mixing tool is situated. The mixing tool may be actuated like similar to a plunger with linear motion and has a connection for an actuating device.

Abstract: A method and a device are described for producing and/or screening composite arrangements, especially of layer [laminated; coated] composite arrangements, with respect to one desired property, a plurality of composite arrangements (16a, 16b, . . . , 26a, 26b, . . . ) being produced in continuous form, in that on a substrate (10, 20) at at least two defined points (11a, and 11b, . . . , 21a, 21b, . . . ) at least one educt is applied in each case for at least two different materials and the latter are synchronously subjected to the same reaction conditions for the formation of the materials. In this context, one material along with one point (11a, the 11b, . . . , 21a, 21b, . . . ) of the substrate constitutes one composite arrangement (16a, 16b, . . . , 26a, 26b, . . . ). A change in one property of each composite arrangement (16a, 16b, . . . 26a, 26b, . . . ) is determined under the influence of an external stimulus, and the composite arrangement (16a, 16b, . . . , 26a, 26b, . . .

Abstract: A method of producing a material library of surface areas having different properties is described, in which mixtures of substances are applied to a substrate by a combinatory method so that a combinatory system is obtained. At least two suspensions are used to produce the mixtures.

Abstract: An exhaust gas treatment unit for conversion and in particular reduction of nitrogen oxide compounds in an exhaust gas stream of a combustion system, in particular a Diesel internal combustion engine, having a storage unit for storing a urea-water solution and a metering unit for metering the urea-water solution into the exhaust gas stream, and at least one measuring instrument for ascertaining a concentration of the urea-water solution in the storage unit with an electronic evaluation unit with which the concentration of the urea-water solution can be ascertained without major effort and economically favorably, so that an exact metering of urea into the exhaust gas stream can be achieved. At least one measuring instrument is provided in the treatment unit, for ascertaining a concentration of the urea-water solution in the storage unit with an electronic evaluation unit, and the storage unit of the measuring instrument includes at least one pressure sensor for ascertaining a pressure.

Abstract: A polymer compound containing a ceramic powder and a polymer is described, the ceramic powder having a specific surface area of more than 1.8·108 m2/m3 and constituting more than 5 vol. % of the polymer compound, the polymer being shear resistant, and the pore sizes in the polymer compound being 3-15 nm. Furthermore, a method for manufacturing this polymer compound, its use, and a sintered body manufactured therefrom are also described.