Abstract: A method and device for assessing damage to a rolling bearing caused by bearing currents, in particular high-frequency bearing currents, in an electric machine which is electrically connected to an inverter, in particular to an inverter having a DC voltage link circuit, is described. The rolling bearing has a lubrication gap between an inner bearing ring and a rolling body and between an outer bearing ring and the rolling body. The method includes detecting the energy of an electric discharge event in the lubrication gaps, searching for a coincident event having a frequency above one GHz indicative of a damaging bearing current event, detecting a frequency of occurrence of discharge events, and evaluating the discharge events by correlating the frequency of occurrence and the energy of the discharge events.

Abstract: A force transducer, in particular a load cell, includes a spring body that deforms when loaded with a force or load to be measured. Two support parts, which are separated by a gap, are moved out of a position of rest. A capacitive displacement detector is used to detect the relative movement of the support parts, where the capacitor includes two electrode combs that are each held on one of the support parts and includes a multiplicity of electrode fingers. The electrode combs are configured designed and mounted on the two support parts such that the electrode fingers of the one electrode comb pass into the finger interspaces of the other electrode comb when the spring body is loaded so that the force transducer is resistant to overloading.

Abstract: A force transducer, in particular a weighing cell, includes a spring body, which deforms under the action of a force or load to be measured, and a sensor that includes two separate sensor parts mounted at different locations of the spring body and that generates a sensor signal which is dependent on the relative position of the sensor parts with respect to each other. In order to improve the adaptation of the sensor to the spring body, one of the sensor parts is attached to the spring body with interposition of an electromechanical actuator and a control device is present, which controls the actuator dependent on the sensor signal in the direction of a reduction in the positional difference of the sensor parts.

Abstract: A sensor device includes an exchangeable module shaped as a substantially annular disk and concentrically mounted at or on a shaft of an electric machine. The exchangeable module includes a detection device for detecting a bearing current of the electric machine and an energy converter device configured to convert mechanical energy of the shaft into electrical energy for transmission to the detection device.

Abstract: A force transducer, in particular a load cell, includes a spring body that deforms when loaded with a force or load to be measured. Two support parts, which are separated by a gap, are moved out of a position of rest. A capacitive displacement detector is used to detect the relative movement of the support parts, where the capacitor includes two electrode combs that are each held on one of the support parts and includes a multiplicity of electrode fingers. The electrode combs are configured designed and mounted on the two support parts such that the electrode fingers of the one electrode comb pass into the finger interspaces of the other electrode comb when the spring body is loaded so that the force transducer is resistant to overloading.

Abstract: A force transducer, in particular a weighing cell, includes a spring body, which deforms under the action of a force or load to be measured, and a sensor that includes two separate sensor parts mounted at different locations of the spring body and that generates a sensor signal which is dependent on the relative position of the sensor parts with respect to each other. In order to improve the adaptation of the sensor to the spring body, one of the sensor parts is attached to the spring body with interposition of an electromechanical actuator and a control device is present, which controls the actuator dependent on the sensor signal in the direction of a reduction in the positional difference of the sensor parts.

Abstract: The invention inter alia relates to a method for monitoring the bearing current of an electrical machine (10). An electrode (100) arranged at a distance (d) to a shaft and the shaft—due to the gap (S) between the electrode and the shaft—produce a measurement capacitance (C) and an electric shift current (i) which flows through the measurement capacitance when there is a temporal change of the voltage (Ug) applied between the shaft and the housing is measured. A measurement signal (Ms) indicating a bearing current flow is generated when the shift current or a measurement variable produced by the shift current meets a predetermined trigger criterion. Preferably, the electrode has a circular inner contour so that the gap is annular. The annular inner contour results in an error compensation in the case of a balance error of the shaft because the factor dC/dt remains at least substantially constant. Due to the contactless measurement of the shift current, no contact brushes for contacting the shaft are required.

Abstract: A method for the electrochemical coating of a substrate uses brush plating. This is to take place with an electrolyte in that particles are dispersed, which are embedded into the developing layer. It is proposed to add the particles to the carrier for the electrolyte by way of a separate conduit system. The electrolyte is added by way of a conduit system. In this way it is achieved that an agglomeration of the particles in the electrolyte can be prevented because only a short time passes between when the particles are fed and the layer is formed. A device for electrochemical coating has two conduit systems provided for this purpose.

Abstract: The grounding quality of an electric machine should be better monitored. Therefore, an electric machine is proposed, comprising a stator (1), a rotor (2), a shaft (3), to which the rotor (2) is fastened, and a grounding device (5) for grounding the shaft. The electric machine also has a measuring device (6) for measuring a ground current of the grounding device (5) and for providing a corresponding measured value. The electric machine also has a monitoring device (7) for monitoring the grounding function of the grounding device (5) on the basis of the measured value. In this way, the state of a grounding brush in regard to soiling and wear, for example, can be continuously monitored.

Abstract: A sensor device includes an exchangeable module shaped as a substantially annular disk and concentrically mounted at or on a shaft of an electric machine. The exchangeable module includes a detection device for detecting a bearing current of the electric machine and an energy converter device configured to convert mechanical energy of the shaft into electrical energy for transmission to the detection device.

Abstract: A method and device for assessing damage to a rolling bearing caused by bearing currents, in particular high-frequency bearing currents, in an electric machine which is electrically connected to an inverter, in particular to an inverter having a DC voltage link circuit, is described. The rolling bearing has a lubrication gap between an inner bearing ring and a rolling body and between an outer bearing ring and the rolling body. The method includes detecting the energy of an electric discharge event in the lubrication gaps, searching for a coincident event having a frequency above one GHz indicative of a damaging bearing current event, detecting a frequency of occurrence of discharge events, and evaluating the discharge events by correlating the frequency of occurrence and the energy of the discharge events.

Abstract: A method for producing a radioactively marked peptide, uses a precursor molecule that is prepared in an organic solvent. A radioactively marked compound having a carboxyl function is added. The carboxyl function is activated, and the activated radioactively marked compound is bonded to the precursor molecule in order to form the radioactively marked peptide. The radioactively marked compound is an isocyanocarboxylic acid. A radioactively marked isocyanocarboxylic acid is used for producing a radioactively marked peptide.

Abstract: A method produces a radioactively marked carboxylate, at least one precursor molecule of the carboxylate being prepared in a solvent including a conductive salt. Radioactively marked carbon dioxide is fed into the solvent. The precursor molecule is electrochemically reacted with the radioactively marked carbon dioxide to form the radioactively marked carboxylate. The radioactively marked carbon dioxide is completely dissolved in the solvent when the precursor molecule is reacted. The radioactively marked carbon dioxide is used for electrochemically synthesizing a radioactively marked carboxylate, the carbon dioxide being completely dissolved in a solvent during synthesis. A microstructure is used for electrochemically synthesizing the radioactively marked carboxylate, radioactively marked carbon dioxide being reacted.

Abstract: A therapeutically active ingredient is administered to the human or animal body. The active ingredient contains an ?-hydroxy acid, an ?-amino acid, a peptide or a protein, the component being radiolabeled with 11C and the radioactive atom replacing the C atom of the carboxyl group or of a peptide bond in the a position. The labeled therapeutically active ingredient which is chemically identical to the active ingredient to be used for therapeutic purposes can be advantageously used in tests which allow a dispersion of the active ingredient to be tested in tissue samples or in the human or animal body by positron emission tomography. The complementary information can for example help to accelerate the approval procedure for medicaments.

Abstract: A microfluidic reactor has a reaction chamber which is configured as an annular channel. It is provided that segments have been formed in the annular channel such that a sequence of inlets and outlets (allows an alternation between the process fluids (A and B) to take place. Furthermore, particles which circulate in the annular channel and can be used, for example, for the adsorption and desorption of ions may be provided in the annular channel. In this way, the ions concerned can, for example, be extracted from the process fluid (A) and transferred into the process fluid (B). In a method, the reactor can be used for example for the purpose of obtaining 18F? ions from water enriched therewith and feeding them to a solvent such as acetonitrile. In the further course of the method, the 18F? ions can be used for producing a radiopharmaceutical (for example FDG).

Abstract: A cladding (22) for a wall (12) includes a barrier layer (24) that can be deformed by the action of a polymer actuator (14). According to the invention, a contact surface (A) of the cladding lies completely against the wall, at least in the non-deformed state, stabilizing the intrinsically elastic wall cladding. For example, the wall cladding can be fixed to the wall (12) in the form of lamellae (22), at respective points, in such a way that the activation of the polymer actuator (14) causes the lamellae (22) to bend, thus permitting, for example, a layer (25) of ice to be detached from the cladding. Alternatively, the cladding can also be configured from a membrane actuator, which is fixed at points, or by its entire surface to the wall (12).

Abstract: A method for the electrochemical coating of a substrate uses brush plating. This is to take place with an electrolyte in that particles are dispersed, which are embedded into the developing layer. It is proposed to add the particles to the carrier for the electrolyte by way of a separate conduit system. The electrolyte is added by way of a conduit system. In this way it is achieved that an agglomeration of the particles in the electrolyte can be prevented because only a short time passes between when the particles are fed and the layer is formed. A device for electrochemical coating has two conduit systems provided for this purpose.

Abstract: In a micromechanical sensor (11) for measuring a mass flow rate in accordance with the Coriolis principle, two line sections (13) are mounted in a suspension means (24) such that they can oscillate, as a result of which they can be caused to oscillate in phase opposition (essential for the measuring principle). A spacer layer (18) is provided between the layers (12a, 12b) forming the line sections (13), the spacer layer ensuring that there is a space between the line sections (13) in the quiescent state. Oscillation of the line sections in phase opposition only becomes possible at all as a result of this since this prevents collision of the line sections (13) as they approach one another.

Abstract: A strand-like material is formed of CNT yarns that are embedded in a metal matrix. The embedding in a common matrix has the advantage in that the material composite exhibits an improved electrical conductivity. This lies in the ability for electrons to switch from the CNT to the matrix and back again. The strand-like material composite is therefore suitable for use as an electrical conductor. Further proposed is a method for producing the strand-like material composite.

Abstract: In a micromechanical sensor (11) for measuring a mass flow rate in accordance with the Coriolis principle, two line sections (13) are mounted in a suspension means (24) such that they can oscillate, as a result of which they can be caused to oscillate in phase opposition (essential for the measuring principle). A spacer layer (18) is provided between the layers (12a, 12b) forming the line sections (13), the spacer layer ensuring that there is a space between the line sections (13) in the quiescent state. Oscillation of the line sections in phase opposition only becomes possible at all as a result of this since this prevents collision of the line sections (13) as they approach one another.