Abstract: The invention relates to a process for converting hydrocarbon feeds by thermal steamcracking to at least one olefin-containing product stream comprising at least ethylene and propylene, with at least partial conversion of a first hydrocarbon feed in at least one first cracking furnace (1) and of a second hydrocarbon feed in at least one second cracking furnace (2). According to the invention, the second hydrocarbon feed is converted in the second cracking furnace (2) with cracking conditions that lead to a ratio of propylene to ethylene of 0.7 to 1.6 kg/kg, and the first hydrocarbon feed is converted in the first cracking furnace (1) with cracking conditions that lead to a ratio of propylene to ethylene of 0.25 to 0.85 kg/kg at the cracking furnace exit, the value for the ratio of propylene to ethylene for the second hydrocarbon feed being above the value for the ratio of propylene to ethylene for the first hydrocarbon feed.

Abstract: A method and a device for displaying vehicle parameters, which comprise at least a first and a second parameter is provided. A value of the first parameter and a value of the second parameter are determined and the value of the first parameter and the value of the second parameter are displayed on a display area. In addition, the value of the first parameter is changed and the change in the value of the first parameter at least in a first portion is converted into a change in the value of the second parameter. A first display element, via which the conversion of the change in the value of the first parameter into the change in the value of the second parameter is depicted graphically, is created on the display area.

Abstract: A hand-held machine tool is disclosed. The tool has an electric motor and an output shaft which can be driven by the electric motor about a working axis. The output shaft has an intake space which is open on the output side for receiving a machine tool and which has two elongated holes cutting into the intake space in the radial direction. Blocking elements lie in the elongated holes and protrude into the intake space and are movable between an end on the output side of the elongated hole and an end on the drive side of the elongated hole. The blocking elements abut on a radial stop in the radial direction and are forced into the intake space in an engaging manner. The stop overlaps in a locked position with the ends on the output side of the elongated holes and can be moved in the withdrawal direction against a spring force of a spring for releasing a radial movement of the blocking elements from the engagement with the intake space.

Abstract: A direct conversion X-ray detector for the detection of X-rays includes at least a semiconductor used for detecting X-rays, which has areas that are shaded against X-rays and unshaded areas, a pixelated electrode attached to the semiconductor and an all-over electrode attached to the semiconductor opposite the pixelated electrode, and at least one light source to illuminate the all-over electrode with additional light radiation for the purpose of generating additional charge carriers. In an embodiment, the at least one light source is designed such that the shaded areas are irradiated with a different intensity of the additional light radiation than are the unshaded areas. A CT system including the direct conversion X-ray detector is also disclosed, together with a method for the detection of incident X-rays via direct conversion X-ray detector, wherein the shaded areas are irradiated with a different intensity of the additional light radiation than the unshaded areas.

Abstract: A thermal conductivity detector includes at least four detector components that are arranged in receptacles of a thermal conduction block in a circle around a center axis of the thermal conduction block. The thermal conduction block comprises a central portion along the axis, the cross-axial dimensions of the central portion being less than the diameter of the circle. There are at least four equal peripheral portions that are connected solely to the central portion and are separated from each other, each of the peripheral portions carrying one of the detector components.

Abstract: A sensor for determining a temperature is provided, having a first insulating layer made of a first dielectric, which layer is arranged between a first and a second conductive layer made of a conductive material, and having a second insulating layer made of a second dielectric, which layer is arranged between the second and a third conductive layer made of a conductive material, wherein the first and the second dielectric have a different temperature dependency of the respective permittivity thereof. A method for determining a temperature by such a sensor is also provided.

Abstract: A control system for controlling the temperature in a high-temperature battery to which hot air is supplied via an air duct system or in a high-temperature electrolyzer to which hot air is supplied via an air duct system is provided. The control system includes at least two temperature probes designed to detect the temperature at two different points in the air duct system, at least one first air-conditioning unit for physically conditioning the air, mounted in the air duct system upstream of the high-temperature battery or high-temperature electrolyzer, and a recirculation duct which recirculates hot air discharged from the high-temperature battery or high-temperature electrolyzer to a point in the air duct system upstream of the high-temperature battery or high-temperature electrolyzer and feeds the hot air back into the air duct system. The control system controls the first air-conditioning unit in accordance with the temperatures detected by the temperature probes.

Abstract: A rotor of an electric machine includes a rotor lamination stack connected to a rotor shaft for conjoint rotation therewith. The rotor lamination stack extends from a first axial face of the rotor lamination stack to a second axial face when viewed in the direction of an axis of rotation of the rotor lamination stack. The rotor lamination stack has bores distributed around the axis of rotation and extending from the first axial face to the second axial face when viewed in the direction of the axis of rotation. A tie rod which protrudes from the axial faces when viewed in the direction of the axis of rotation is inserted into each bore. Fastening elements are attached to the tied rods at both axial faces so that the rotor laminations of the rotor lamination stack are pressed together. The tie rods are cast in the bores by a casting material.

Abstract: A laser sintering device and a laser sintering method are provided. The laser sintering device includes a laser source and a sintering platform. The laser source projects a laser beam on a plane, and by changing directions of the laser beam an action area on the plane is defined. The sintering platform provides a sintering area. The sintering platform is arranged in such a way that at least a first region of the sintering area is located within the action area and at least a second region of the sintering area is located outside the action area. The sintering platform is movable such that at least a part of the second region replaces at least a part of the first region within the action area.

Abstract: A machine comprising a base body and an electric machine is provided. The electric machine includes a stator pack and a rotor. The rotor is mounted in a bearing device relative to the stator pack so that the rotor can be rotated about a rotational axis relative to the stator pack. The rotor is embodied as an outer rotor such that the stator pack is arranged between the rotor and the rotational axis when seen radially with respect to the rotational axis. The base body is arranged at least partially radially inside the stator pack. The stator pack is thermally coupled to a cooling device such that heat produced in the stator pack is transferred in the cooling device.

Abstract: A method and calculation unit are disclosed for reconstructing an image from measured projection data. In an embodiment, the method includes reconstructing an initial image from the projection data via back-projection; dividing the initial image into contiguous blocks of voxels; defining groups of voxels, wherein each group is defined by selecting one voxel from each block, each voxel having the same position relative to the other voxels within its block; updating the voxel values for all voxels within one group by minimizing a function consisting of a weighted sum of a first term representing the geometry of the data acquisition process, and a second regularization term; and repeating the updating of the voxel values for all voxels within one group until all groups have been updated at least once.

Abstract: A bearing for a wind turbine is provided. The bearing includes an inner ring and an outer ring concentrically arranged about an axis of rotation. Furthermore, the bearing includes rollers interposed between the inner ring and the outer ring. At least one of the inner ring and the outer ring has a layer that functions as a raceway for the rollers. A main body of a corresponding one of the inner ring or the outer ring has a first metal composition having a first chromium content. The layer includes a second metal composition having a second chromium content higher than the first chromium content. A method of manufacturing such a bearing is also provided.

Abstract: A submodule for forming a multilevel power converter for electric energy distribution and transmission, includes a capacitor unit and a power semiconductor circuit having power semiconductors that can be switched off. The capacitor unit and the power semiconductor circuit are interconnected in such a way that, depending on the actuation of the power semiconductors of the power semiconductor circuit, at least the voltage released at the capacitor unit or a zero voltage can be generated at output terminals of the submodule. The submodule is not only able to compensate for reactive power, but to exchange active power with a connected alternating current network. An additional energy storage device is connected to the capacitor unit through a chopper unit for regulating current flow between the additional energy storage device and the capacitor unit.

Abstract: An AC-to-AC-converter for converting a first frequency AC-voltage to a second frequency AC-voltage is disclosed. The converter includes: a first converter section which includes a first input terminal, a second input terminal, a first DC-output node, and a second DC-output node; a second converter section which includes a first DC-input node connected to the first DC-output node, a second DC-input node connected to the second DC-output node, and at least two second output terminals; a DC-link overvoltage clamp which is coupled between the first DC-output node and the second DC-output node; and a capacitor system. The first converter section, the second converter section, the DC-link overvoltage clamp, and the capacitor system are integrated into one assembly.

Abstract: An axle support of a vehicle, in particular a passenger motor vehicle, consists of an upper shell and a lower shell, each of which is formed from a carbon fiber-reinforced plastic material. When the upper shell and the lower shell are assembled together, they form a hollow body. In this case, the upper shell and the lower shell are screwed together by way of metal insert parts, which are laminated at least in sections into the shell parts. A core part, in particular formed from a plastic foam, for transferring the shear stresses over a wide area can be glued into the cavity between the upper shell and the lower shell at least in the region of the opposing metal insert parts. Furthermore, at least one of the insert parts can be designed simultaneously for connecting an add on part.

Abstract: A fixing arrangement for fixing a first motor vehicle component to a second motor vehicle component includes first second fixing elements. The first and second fixing elements are connectable to each other in a positive locking manner. The second fixing element has a pin configured as a ball; and the first fixing element has a sleeve that fits over the spherical pin to produce a positive locking engagement. The first fixing element has a securing device designed as a cap, which is mounted on an outer shell sleeve surface such that the cap is movable in the axial direction. The sleeve is locked on the spherical pin by axial relative movement of the cap from a defined first position into a defined second position.

Abstract: Artifacts caused by at least one metal object in a target region to be imaged are corrected during the reconstruction of a three-dimensional image dataset from a number of two-dimensional projection images of the target region recorded from different projection directions with an x-ray device. An orientation and position of a three-dimensional model of the known metal object is determined in the coordinate system of the x-ray device via a 2D-3D registration with at least one two-dimensional projection image, after which, for each radiation path of the projection images running through the metal object, on the basis of attenuation information through the metal object assigned to the model, an attenuation portion through the metal object is calculated for the projection image data assigned to the radiation path and is obtained by computation for determining modified projection images from the projection image data. The three-dimensional image dataset is determined from the modified projection images.

Abstract: An enclosure for a power supply is disclosed. The enclosure may include a control compartment configured to receive one or more control components, a transformer compartment positioned adjacent to the control compartment and configured to receive a transformer, and a power cell compartment positioned adjacent to the control compartment and the transformer compartment. The power cell compartment may be configured to receive a plurality of power cells arranged into a plurality of pods. The power cells may be received in the power cell compartment such that each power cell in a first pod is adjacent to at least two other power cells in the first pod. A voltage difference between adjacent power cells in a pod may be less than an acceptable voltage tolerance.

Abstract: A method is provided for generating noise in an interior and exterior of a motor vehicle in which a control unit is provided which can be activated and which is operatively connected to a noise generator. The noise generator is connected to at least one noise emitting device (3). The noise emitting device (3) is mounted underneath a hood of the motor vehicle, and is connected to the vehicle interior via at least one hose with at least one sound transmitting element. Sound waves are extracted from the noise emitting device (3) and are transmitted into the vehicle interior.

Abstract: In a method for accelerated CEST imaging in magnetic resonance tomography, RF pulses for the saturation of the protons of the substance to be shown are emitted by several transmission coils, and shape of these RF pulses is calculated using an optimization method so that a weighted sum is minimized, the sum exhibiting at least two of the following norms: the norm of the magnetization of free water protons in each point in space, the norm of the deviation of the magnetization of the bound protons from an inverted magnetization in each point in space and the norm of the magnetization of protons with an inverted shift relative to the predefined frequency shift in each point in space. The shape of the RF pulses for subsequent excitation of the free water protons also can be calculated for the optimization method.