Abstract: The invention relates to a mechanical wheelchair drive, comprising a rotatably mounted lever, a handle fastened to the lever, and a force transfer unit for transferring rotational motion of the lever to a wheelchair wheel, wherein the lever has a variable length and is guided along a closed guide of a guide plate, said guide deviating from the circular form, such that the length of the lever changes during the rotational motion.

Abstract: Compounds of formula (I) are photoinitiators or photosensitizers in a photopolymerizable composition: R1 represents a monovalent, linear, branched or cyclic, aliphatic hydrocarbon group having 1 to 20 carbon atoms, optionally substituted with substituent(s) selected from —Cl, —Br, —OH, ?O, —NH—CO—OR2, —NH—CO—R2 or free-radically or ionically polymerizable groups. Each R2 is independently —H or C1-6 alkyl; n is ?1. If n=1, Z and Y are absent and X represents —OR3; if n is >1, Z represents —OR4—, Y represents —OR5— and X represents —H or —OH. R3 represents —H or R1; and R4 and R5 each independently represent a bivalent hydrocarbon group. The polymerizable moieties as optional substituents of R1 are polymerizable double or triple bonds, lactam, lactone and epoxide moieties, which are subjectable to ring-opening polymerization; and two of R1 to R5 may be linked to one another to form a ring or a dimer.

Abstract: Disclosed is a method for validating a hardware system by a model thereof, which method comprises: providing reference structures and determining, in the model, sub-structures, each of which is structurally equivalent to one of the reference structures; extracting, from the model, input cones for each sub-structure; creating monopartite candidate graphs by mapping the bipartite sub-structure and the respective input cones to one of the candidate graphs; creating, for each candidate graph, a match vector, each dimension of the match vector comprising a count of occurrences, in the candidate graph, of a different one of predetermined graphlets; clustering, on the basis of similarity of the match vectors, the candidate graphs in clusters; and selecting, from each of the clusters, one candidate graph and determining a functional behaviour of the respective sub-structure of the selected candidate graph for validating the hardware system.

Abstract: Compounds of formula (I) are photoinitiators or photosensitizers in a photopolymerizable composition: R1 represents a monovalent, linear, branched or cyclic, aliphatic hydrocarbon group having 1 to 20 carbon atoms, optionally substituted with substituent(s) selected from —Cl, —Br, —OH, ?O, —NH—CO— OR2, —NH—CO—R2 or free-radically or ionically polymerizable groups. Each R2 is independently —H or C1-6 alkyl; n is ?1. If n=1, Z and Y are absent and X represents —OR3; if n is >1, Z represents —OR4—, Y represents —ORs— and X represents —H or —OH. R3 represents —H or R1; and R4 and R5 each independently represent a bivalent hydrocarbon group. The polymerizable moieties as optional substituents of R1 are polymerizable double or triple bonds, lactam, lactone and epoxide moieties, which are subjectable to ring-opening polymerization; and two of R1 to R5 may be linked to one another to form a ring or a dimer.

Abstract: A method is provided for detecting a substance, preferably human tissue, in the vicinity of a mobile tool, wherein the substance to be detected has different electrical characteristics from a material that can be processed by the mobile tool. In the method, a change is detected in a capacitance formed by the tool and a counter electrode that is electrically insulated from the tool. A periodic change in the capacitance is detected and the change is produced by the presence of the substance in a region in relation to the tool and by a periodic change in a geometrical characteristic of the tool in this region as the tool moves.

Abstract: Disclosed is a method for validating a hardware system by a model thereof, which method comprises: providing reference structures and determining, in the model, sub-structures, each of which is structurally equivalent to one of the reference structures; extracting, from the model, input cones for each sub-structure; creating monopartite candidate graphs by mapping the bipartite sub-structure and the respective input cones to one of the candidate graphs; creating, for each candidate graph, a match vector, each dimension of the match vector comprising a count of occurrences, in the candidate graph, of a different one of predetermined graphlets; clustering, on the basis of similarity of the match vectors, the candidate graphs in clusters; and selecting, from each of the clusters, one candidate graph and determining a functional behaviour of the respective sub-structure of the selected candidate graph for validating the hardware system.

Abstract: A method and an interferometric device for spectroscopically or spectrometrically examining a sample, comprising: a) generating a laser beam having a wavelength, b) splitting the laser beam into a measurement beam and a reference beam, c) interacting the sample with the measurement beam, d) interacting a reference with the reference beam, e) overlaying the measurement beam and the reference beam, f) detecting a first output beam, g) detecting a second output beam, h) forming a differential signal between the first output signal and the second output signal, i) controlling the differential signal to a predefined target value, j) determining a refractive index of the sample from the adjustment of the phase difference between the measurement beam and the reference beam, k) repeating steps a) to j) for additional wavelengths of the laser beam.

Abstract: A friction stir welding tool includes a rotation-symmetrical shaft having a proximal end, a distal end, and a pin, which is arranged concentrically about the rotation axis and which has a smaller diameter than the shaft at the proximal end thereof, and thus projects as compared to a shoulder region of the shaft. The shaft, at least in the shoulder region, and the pin each consists of a high-temperature-resistant metal or an alloy thereof. The pin and/or the shaft in the shoulder region consist of or are coated by a composite material, which substantially consists of molybdenum, tungsten, niobium or tantalum or an alloy of at least one of these metals, and a reinforcement phase embedded therein and consisting of at least one material having a Mohs hardness >6, a micrometer particle size, and a free enthalpy of formation at 1300 K of less than ?350 kJ/mol O2.

Abstract: The invention relates to a method for the contactless determining of the speed of a fluid flow and the concentration of at least one analyte therein, wherein a) the flow speed is measured by means of laser Doppler anemometry (LDA) using tracer particles which pass through an interference fringe pattern in the intersection region of two coherent monochromatic light beams and thereby generate a scattered light signal; and b) the concentration of the at least one analyte is measured by means of Raman spectroscopy, wherein a monochromatic light beam is radiated in and the Raman spectrum of the light inelastically scattered on the analyte molecules in the flow is recorded; wherein c) a single light source is used for both the LDA and the Raman spectroscopy, such that both measurements are carried out in the intersection region of two two coherent light beams coming from the light source, wherein the speed is measured by photons elastically scattered onto the tracer particles, and the concentration is measured by p

Abstract: Sensor for determining a rotation angle (?) about a rotation axis. The sensor includes a rotary element mounted in a base element so as to be rotatable about the rotation axis. The rotary element is made from a first material having a first refractive index n1 and is constructed from several layers. At least one light generating device is fixedly arranged relative to the base element. At least one light detection device is fixedly arranged relative to the base element and configured to detect a light signal. At least one refractive structure is arranged in each layer and has a second refractive index n2, wherein n2?n1. The at least one beam path extends at least in a first rotation angle range through the at least one refractive structure in order to be able to assign a specific rotation angle (?) to the light signal detected by the at least one light detection device at least in the first rotation angle range.

Abstract: Sensor (1) for determining as rotation angle (?) about a rotation axis (2), the sensor (1) comprising a rotary element (4) which is mounted in a base element (3) so as to be rotatable about the rotation axis (2) and is produced from a first material having a first refractive index n1, wherein a light generating means (5a, 5b, 5c) is provided which is fixedly arranged relative to the base element (3) and a light detection means (6a, 6b, 6c) which is fixedly arranged relative to the base element (3) to detect a light signal emitted by the light generating means (5a, 5b, 5c) and passed through the rotary element (4) along a beam path (8a, 8b, 8c).

Abstract: A fluidized bed reactor system with one or more fluidized bed reactors for carrying out chemical or physical reactions, at least one reactor thereof being a rapidly fluidized reactor to be operated as a circulating fluidized bed and having, at the upper end, a fluid outlet, a particle separator, and a particle line connected thereto for the purpose of feeding back separated fluidized bed particles into the same or a further reactor, wherein, at least one rapidly fluidized reactor has one or more flow control devices producing reaction zones that are separate from one another, and in order to control the flow conditions into the reaction zones, one or more of these flow control devices are specifically adjustable from outside of the system.

Abstract: A compound of formula (II), and a method of preparation thereof, for use as a smooth muscle cell (SMC) proliferation-inhibiting drug: wherein: R1 to R6 are —H, —F, —CH3, —CF3, —CF2CH3, —OCH3, —COCH3, —C4H9, —COOC2H5, or —C6H5, or two vicinal residues from R1 to R6 form a saturated or unsaturated carbocyclic ring together with the two carbon atoms to which they are attached; R7 is OH, allyloxy, propargyl-oxy, 2,2-dimethylpropanoyloxy (pivaloyloxy), butanoyloxy, 3-methylbutanoyloxy, 2-buten-oyloxy, 2-methyl-2-butenoyloxy, 3-methyl-2-butenoyloxy, isopentanoyloxy, 2-ethylbutanoyl-oxy, 3,3-dimethylbutanoyloxy, cyclopropylcarbonyloxy, cyclobutylcarbonyloxy, cyclo-pentylcarbonyloxy, cyclopentenylcarbonyloxy, cyclohexylcarbonyloxy, cyclo-hexenylcarbonyloxy, adamantylethanoyloxy, 3-phenylpropenoyloxy (cinnamyloyloxy), 2-methylbenzoyloxy, or naphthoyloxy; wherein, in ring A and/or B, one or more carbon ring atoms are optionally replaced by heteroatoms; wherein the compounds of formula (II) are obtained by combining

Abstract: A method of inducing differentiation of mammalian cells into cardiomyocyte-like cells by contacting the mammalian cell with a triazine compound of formula (I), wherein X is independently —NR4—or —O—, R4 is hydrogen or C1-6-alkyl; R1 is hydroxy, C1-6-alkyl, C1-6-alkoxy, carboxy, C1-6-alkoxycarbonyl, halo, cyano, nitro, formyl, amino, C1-6-alkylamino, or di-C1-6-alkylamino, the C1-6-alkyl or -alkoxy residue being optionally substituted with one or more R5 substituents selected from hydroxy, halo, cyano, and nitro; n is 0 to 5; R2 is hydrogen, aryl, heteroaryl, or C1-6-alkyl, the aryl or heteroaryl residue being optionally substituted with one or more R1 substituents, and where the C1-6-alkyl is optionally further substituted with one or more R5 substituents; and R3 is selected from hydrogen, halo, NR4R7, OR7, SR7, and R7, where the same options apply for R7 as for R2; with the proviso that the compound of formula (I) is not 3-[(4,6-diphenoxy-1,3,5-triazin-2-yl)amino]benzoic acid.

Abstract: A method for combating bacterial infections in plants including the step of applying a plant protection agent onto the blossoms and/or leaves of the plants. The plant protection agent includes a compound according to formula (A) or formula (B), where R1, R4 and R5 are H, a glycoside, or an ester independently of each other, and the compound is dissolved in a solvent at a concentration of 0.1 ?M to 2 mM.

Abstract: A method of inducing differentiation of mammalian cells into cardiomyocyte-like cells by contacting the mammalian cell with a triazine compound of formula (I), wherein X is independently —NR4— or —O—, R4 is hydrogen or C1-6-alkyl; R1 is hydroxy, C1-6-alkyl, C1-6-alkoxy, carboxy, C1-6-alkoxycarbonyl, halo, cyano, nitro, formyl, amino, C1-6-alkylamino, or di-C1-6-alkylamino, the C1-6-alkyl or -alkoxy residue being optionally substituted with one or more R5 substituents selected from hydroxy, halo, cyano, and nitro; n is 0 to 5; R2 is hydrogen, aryl, heteroaryl, or C1-6-alkyl, the aryl or heteroaryl residue being optionally substituted with one or more R1 substituents, and where the C1-6-alkyl is optionally further substituted with one or more R5 substituents; and R3 is selected from hydrogen, halo, NR4R7, OR7, SR7, and R7, where the same options apply for R7 as for R2; with the proviso that the compound of formula (I) is not 3-[(4,6-diphenoxy-1,3,5-triazin-2-yl)amino]benzoic acid.

Abstract: A fluidized-bed reactor system with at least two fluidized-bed reactors, each being a circulating fluidized bed, a particle line with a particle separator for transferring fluidized-bed particles from the first to the second reactor, and a particle line exiting at the lower half of the second reactor for transferring fluidized-bed particles back to the first reactor, wherein, at least in the second reactor, two or more reaction zones separated by one or more flow controllers and that the particle line opens into the second reactor above at least one flow controller.

Abstract: Disclosed herein are methods of determining polydispersity (PDI) and molecular mass distribution (MMD) of reactive PEG samples using mass spectrometry. More specifically, a mass spectrometry method called GEMMA is used to determine PDI and MMD of PEG samples which provides more accurate measurements for high molecular weight PEG samples than prior known MALDI-TOF analysis.

Abstract: A unique and cost-effective method for producing a multilayer ceramic structure by using a first green film that contains a ceramic material, and the multilayer ceramic structure produced thereby. The method including the steps of: (a) producing at least one porous region in the first green film, the at least one porous region extending from the surface of the first green film; (b) applying a first layer, in sections, to the surface of the first green film, wherein one section of the first layer is located above the at least one porous region produced in step (a); (c) positioning at least one additional green film on the surface of the first green film, to which the first layer has been applied; (d) laminating the first green film and the at least one additional green film to form a green film composite; and (e) sintering the green film composite.

Abstract: The invention relates to the use of a compound according to formula (A) or formula (B), where R1, R4 and R5 are H, a glycoside, or an ester independently of each other, as a plant protection agent, wherein the plant protection agent comprises the compound, which is dissolved in a solvent at a concentration of 0.1 ?M to 2 mM.