Abstract: A circuit arrangement for generating a three-phase rotating field at least at an electrical consumer including at least one mains voltage input including a single-phase alternating current, a first phase strand connected to the mains voltage input and the electrical consumer, whose transported voltage includes a first outer conductor, a second phase strand, whose transported voltage corresponds to a second outer conductor, an energy storage, a switching element, through which the energy storage can be connected via a third phase strand for generating a third outer conductor, and a control unit that can detect at least one trigger point of the first phase strand and the switching element can be actuated at least at a detected trigger point of the first outer conductor of the first phase strand to close or open the third phase strand and to generate the third outer conductor.

Abstract: The present invention is in the field of processes for producing flexible organic-inorganic laminates as well as barrier films comprising flexible organic-inorganic laminates by atomic layer deposition. In particular the present invention relates to a process for producing a laminate comprising more than once the sequence comprising: (a) depositing an inorganic layer by performing 4 to 150 cycles of an atomic layer deposition process, and (b) depositing an organic layer comprising sulfur by a molecular layer deposition process.

Abstract: A vacuum cleaner is provided with a dirt collection container and a suction head which can be placed on the dirt collection container, wherein the suction head has at least one suction unit which is in flow communication with the dirt collection container via a suction duct and a filter device and with at least one exhaust air opening via at least one exhaust air duct. To provide high suction capacity, a compact construction, and relatively little generation of noise during operation, the suction head has two suction units arranged next to one another, positioned in a vertical direction at the same level as the filter device and surrounded by a common exhaust air chamber, wherein the exhaust air chamber is in flow communication with exhaust air openings via a first and a second exhaust air duct and the filter device is arranged between the two exhaust air ducts.

Abstract: A vacuum cleaner is provided with a dirt collection container and a suction head which can be placed on the dirt collection container, wherein the suction head has at least one suction unit which is in flow communication with the dirt collection container via a suction duct and a filter device and with at least one exhaust air opening via at least one exhaust air duct. To provide high suction capacity, a compact construction, and relatively little generation of noise during operation, the suction head has two suction units arranged next to one another, positioned in a vertical direction at the same level as the filter device and surrounded by a common exhaust air chamber, wherein the exhaust air chamber is in flow communication with exhaust air openings via a first and a second exhaust air duct and the filter device is arranged between the two exhaust air ducts.

Abstract: A calendar date display comprises a ten-day indicator (2) and a unit indicator (1) driven by a program drive (8), which is provided with a calendar date display (9) whose toothing is engaged with the beak (15) of a lever (16) in such a way that a wheel is moved one step forward by one date number change. Between each calendar number change, the beak (15) is engaged between the first and second teeth (11, 12) of the wheel (9). At the time of the calendar number change, the beak (15) is disengaged from said first and second teeth (11, 12) in such a way that it is engaged between the second and third (12, 13) teeth of the wheel (9), thereby moving said wheel one step forward.

Abstract: The invention relates to a method and an apparatus for reconstructing a three-dimensional image volume from two-dimensional projection images of a subject which have been taken from different projection directions by rotating the recording system around the subject, wherein the grayscale values of the voxels of the image volume are calculated by back projection of the projection images. The invention is characterized in that prior to back projection at least one projection image is modified in such a way that it corresponds to a projection image taken with a virtual detector whose axes are aligned parallel to the rotational axis of the recording system.

Abstract: A calendar date display comprises a ten-day indicator (2) and a unit indicator (1) driven by a program drive (8), which is provided with a calendar date display (9) whose toothing is engaged with the beak (15) of a lever (16) in such a way that a wheel is moved one step forward by one date number change. Between each calendar number change, the beak (15) is engaged between the first and second teeth (11, 12) of the wheel (9). At the time of the calendar number change, the beak (15) is disengaged from said first and second teeth (11, 12) in such a way that it is engaged between the second and third (12, 13) teeth of the wheel (9), thereby moving said wheel one step forward.

Abstract: The invention relates to a method and an apparatus for reconstructing a three-dimensional image volume from two-dimensional projection images of a subject which have been taken from different projection directions by rotating the recording system around the subject, wherein the grayscale values of the voxels of the image volume are calculated by back projection of the projection images. The invention is characterized in that prior to back projection at least one projection image is modified in such a way that it corresponds to a projection image taken with a virtual detector whose axes are aligned parallel to the rotational axis of the recording system.

Abstract: Process for the preparation of homopolymers or copolymers by homopolymerization or copolymerization of free-radically polymerizable water-soluble and/or water-dispersible monomers, optionally with further comonomers and optionally with at least one crosslinker, in an inverse emulsion polymerization in the presence of at least one redox initiator pair comprising an oxidizing agent and a reducing agent, where the reducing agent is 2-hydroxy-2-sulfinatoacetic acid and/or salt thereof; homopolymers or copolymers preparable by the process according to the invention, water-in-oil emulsions which comprise at least one homopolymer or copolymer according to the invention, solid compositions which comprise at least one homopolymer or copolymer according to the invention, the use of 2-hydroxy-2-sulfinatoacetic acid and/or salt thereof as reducing agent in a process for the preparation of homopolymers or copolymers; the use of the water-in-oil emulsion comprising at least one homopolymer or copolymer according to the inv

Abstract: The present invention relates to a cosmetic composition for the treatment, care and/or protection of the skin. In particular, the present invention relates to a cosmetic composition which can be applied topically and which provides for prevention, reduction and regeneration of skin ageing.

Abstract: A method and an arrangement are presented for pattern recognition on the basis of statistics. According to the method, for an object to be recognized on the basis of a complete set of two-class or multiclass classifiers, the association with each target class of the class set is estimated with a numerical value that is produced by cascaded use of polynomial classifiers. According to the invention, on a learning sample in which all class patterns to be recognized are sufficiently represented, there is a selection, from all the two-class or multiclass classifiers by way of their estimation vector spectrum, of those two-class or multiclass classifiers with estimations contributing the most to minimize a scalar quantity calculated over the estimation vector spectrum and having high separating relevance. The selected two-class or multiclass classifiers are subsequently used to form, via an expanded learning sample, estimation vectors from which expanded characteristic vectors are produced by polynomial linking.

Abstract: A propulsion control device for a motor vehicle which has a permanently balanced all-wheel drive, wherein the drive slip thresholds at which the control responds in the sense of a braking action, is increased as a function of the velocity and decreased as a function of the transverse acceleration. The acceleration thresholds, at which the control responds, are lowered as a function of the transverse acceleration. In the case of travel in a straight line, the lowest of the wheel peripheral velocities is taken as the reference velocity relative to which the drive slip thresholds are fixed. In the case of travel in a curve, the average of the wheel peripheral velocities of the left-hand side and right-hand side vehicle wheels is taken as the reference velocity for the vehicle wheels on the left-hand side and the right-hand side of the vehicle, respectively. From the time t.sub.

Abstract: A thrust-control device for a motor vehicle having wheels driven on one axle, with a dual-circuit brake system having a tandem main brake cylinder and a brake booster supplied from a special auxiliary pressure source, with an anti-lock system having a brake-pressure medium return device, and with a pressure accumulator serving for thrust control, is extended for use on vehicles with a connectable or permanent all-wheel drive, to the effect that a stop valve is arranged in the brake circuit of the wheels of the further axle and there is a control valve controlling the accumulator pressure and acting on a pressure modulator, the pressure modulator influencing the brake pressure in the brake circuit of the wheels of the further axle when the drive of these wheels is connected and drive slip occurs. This simple extension requires no additional accumulator and makes it possible to preserve the independence of the brake circuits.

Abstract: A shifting arrangement for the shifting between a single-axle standard drive and an all-wheel drive having a first clutch for the locking of a central differential gear and a second clutch for the connecting and disconnecting of one vehicle axle actuated by first and second pressure medium control element respectively against the force of a spring having first and second shift valve respectively controlled by an electronic control unit, to either supply working pressure or relieve from pressure respective control elements. The improvement including a hydraulic identifying valve for bringing the control elements into a mutual interaction. The identifying valve operates, as a function of the working pressure of at least one of the control elements and exclusively during the simultaneous controlling of both shift valves, in such a way that the clutch torque at both clutches increases and decreases approximately to the same extent.

Abstract: To produce methacrylic acid, firstly, isobutyraldehyde is acetalized. The resultant acetal is cleaved into the isobutenyl ether and alcohol. The isobutenyl ether is oxidized with molecular oxygen or an oxygen-containing gaseous mixture in the presence of an alkaline solution at temperatures of 30.degree.-70.degree. C. to obtain the epoxide. This epoxide is hydrolyzed to the .alpha.-hydroxyisobutyraldehyde. The latter is then oxidized with concentrated or fuming nitric acid at temperatures of 20.degree.-110.degree. C. to produce .alpha.-hydroxyisobutyric acid, and methacrylic acid is obtained therefrom by splitting off water.

Abstract: A process for producing a 3,3-dimethyl-2-alkoxyoxirane comprises oxidizing a 1-alkoxy-2-methylpropene with molecular oxygen in the liquid phase, at a temperature of 25.degree.-70.degree. C., optionally in the presence of an alkaline compound.

Abstract: A vane for a hydraulic vane pump, with the vane being adapted to be inserted, with sliding movement, into a guide slot provided in a rotor so as to be symmetrical and parallel to a central plane of the slot. The plane forms a setting angle at an outer jacket of the rotor together with an axial plane containing the rotor axis so that an opening of the slot located at the outer jacket of the rotor leads the bottom of the slot in a direction of rotation. A convex sliding sealing surface cooperates with inner jacket of the stator and a pressure surface is located in the plane directed toward a bottom of the slot. A crown of the sliding sealing surface is displaced, with respect to the principle plane of the vane, in a direction opposite the rotational direction of the rotor. The sliding sealing surface forms, in a direction of rotation of the rotor, a wedge-shaped transistional area located at a plane which forms a complimentary angle combined with an addendum angle to the principle plane of the vane.

Abstract: A process for preparing a methyl-blocked ethoxylate comprises heating at 180.degree.-320.degree. C., in the presence of a catalytically effective amount of a noble metal catalyst, an unsubstituted ethoxylate of 3 or more ethoxy units, or a monoalkyl-, monoaryl-, mono- or di-alkylamino- or mono- or di-arylamino ethoxylate of 2 or more ethoxy units, or a monoalkyl- or monoaryl-N,N-bis(ethoxylate) of 2 or more ethoxy units, all of which are derived from vicinal glycols, whereby there is prepared a corresponding methyl-blocked ethoxylate product which, for an unsubstituted ethoxylate starting material is a dimethylethoxylate having two fewer ethoxy units than the starting ethoxylate, and for the other ethoxylate starting materials, is a methylethoxylate having one less ethoxy unit in each ethoxylate group of the starting material.

Abstract: A continuous process for the partial oxidation of methane to produce mixtures of formaldehyde and methanol wherein methane and an oxidizing gas are reacted in a reaction zone in the form of a flame and the resulting reaction mixture is cooled followed by separation of the resulting products, is further improved by controlling the velocity of the oxidizing gas so that it is 50 to 300 meters per second higher than the methane gas with the methane gas being introduced in a velocity of from 1 to 15 meters per second. Also, the stream of methane gas has a volume that is 3 to 100 times greater than the volume of the stream of oxidizing gas introduced into the reaction zone.

Abstract: The invention relates to a process for the separation of condensable and absorbable gas components having a critical temperature above 30.degree. C. from a mixture with inert gases, being absorbable at most in a little measure and the proportions of the components of said mixture varying widely, by two-stage absorption and simultaneous compression of the cleaned gas and the separated components to different pressures, in which the varying composition of the gas mixture to be separated is equalized in a first absorption stage so that at least temporarily part of the absorbable components of the mixture is absorbed. The remaining gas mixture is compressed and then introduced into a second absorption stage, wherein are obtained an inert gas mixture largely free from absorbable components and a solution rich in absorbable components, from which the absorbable components of the gas mixture are separated through subsequent multi-stage thermal desorption, the absorbent being fed back into the process.