Abstract: A wear prevention system for securing compressor airfoils within a turbine engine while reducing wear of related components may include a compressor diaphragm spring positioned in an airfoil receiving channel between a radially outer surface of a diaphragm base and a radially inner surface of the airfoil receiving channel. The spring may bias the diaphragm base and airfoil attached thereto radially inward against upstream and downstream arms formed from upstream and downstream recesses extending axially from the airfoil receiving channel in the compressor case. The compressor diaphragm spring may dampen vibration and increase service life of the diaphragm base.

Abstract: Methods for computer-aided manufacturing and design, and corresponding systems and computer-readable mediums. A method includes receiving a three-dimensional (3D) solid part model and an associated 3D solid blank. The method includes defining an initial in-process workpiece (IPW) as the same as the 3D solid blank, and defining a cut volume in-process feature to be removed from the IPW. The method includes removing the cut volume in-process feature from the IPW. The method can include calculating and storing the cut volume in-process feature or the updated IPW with the removed cut volume in-process feature. The updated in-process workpiece can be calculated and displayed for each state at all times, in various embodiments.

Abstract: A method and system for estimating 3D cardiac motion from a single C-arm angiography scan is disclosed. An initial 3D volume is reconstructed from a plurality of 2D projection images acquired in a single C-arm scan. A static mesh is extracted by segmenting an object in the initial 3D volume. The static mesh is projected to each of the 2D projection images. A cardiac phase is determined for each of the 2D projection images. A deformed mesh is generated for each of a plurality of cardiac phases based on a 2D contour of the object and the projected mesh in each of the 2D projection images of that cardiac phase.

Abstract: Valve treatment simulation is performed from patient specific imaging data for therapy planning. A model of the valve may be generated from the patient specific data automatically or with very minimal user indication of anatomy locations relative to an image. Any characteristics for the valve not extracted from images of the patient may be added to create a volumetric model. Added characteristics include chordae, such as chordae length and leaflet fiber direction. The characteristics may be adjusted based on user feedback and/or comparison with images of the patient. The effect of therapy on closure of the valve may be simulated from the model. For instance, mitral clip intervention is simulated on the patient-specific model. Valves are deformed according to the clip location. Valve closure is then simulated to predict effect of the therapy in terms of mitral regurgitation.

Abstract: Apparatus and methods in accordance with this invention provide a multi-cell power supply for receiving power from a source and delivering power at an output terminal to a load. The multi-cell power supply includes a first power cell coupled to the source, and a first current sensor circuit. The first power cell provides a first output current, and includes a first output terminal coupled to a reference node of the multi-cell power supply, and a second output terminal coupled to the output terminal. The first current sensor circuit includes a first current sensor and a power supply. The first current sensor is coupled to the first output terminal of the first power cell, and measures the first output current. The power supply is coupled to either the reference node or a floating ground node of the first power cell, and provides power to the first current sensor.

Abstract: A process for coating an edge within a hole in a coated component is provided. The hole is a cooling-air hole operable conduct a coolant therethrough. According to the processes, an outer coating is provided on the outer surface of the component. An inner coating is provided on an inner surface within the hole, wherein the inner coating within the hole takes place using a coating nozzle at a different angle to the coating of the outer surface around the hole, if the spray angles for the outer coating and inner coating relate to the outer surface.

Abstract: The invention relates to a method for damping thermo-acoustic oscillations via a resonator having a resonator volume with thermo-acoustic oscillations induced in a cavity inclined to thermo-acoustic oscillations, and at least some of the thermo-acoustic oscillations being output from the cavity and being input into the resonator volume, with damping oscillations produced in the resonator volume, which are matched to the thermo-acoustic oscillations, with at least some of the damping oscillations being input into the cavity such that the damping oscillations and the thermo-acoustic oscillations overlap in an overlap area, and the oscillations being largely cancelled out. The invention relates to an apparatus for damping thermo-acoustic oscillations in a cavity, comprising a resonator with a resonator volume and a cavity. The invention also relates to a combustion chamber together with a method and an apparatus according to the invention, and to a gas turbine having a combustion chamber.

Abstract: An irregular ultrasound sampling grid is reconstructed to a three-dimensional grid for imaging. Volume data acquired with a helix transducer includes a fractional offset of data spaced along one dimension, resulting in the irregular ultrasound sampling grid. To determine a voxel value for a grid point on a uniform grid, two adjacent planes are identified. The sample locations in the two planes are not aligned, being on the irregular ultrasound sampling grid. Hardware acceleration devices, such as a graphics processing unit, perform bilinear interpolation in each of the planes. The data of each plane is interpolated to the proper global azimuth-range coordinate corresponding with the grid point. The bilinearly interpolated values from each plane are then linearly interpolated to the grid point.

Abstract: An embodiment of the invention generally relates to an FET-based detector for carbon monoxide which is based on two sensitive layers. In at least one embodiment, the first of the sensitive layers is catalytically active and therefore reacts equally to alcohols, in particular ethanol, and carbon monoxide. The second of the sensitive layers is not catalytically active and therefore does not react to carbon monoxide, but only to ethanol. The concentration of carbon monoxide can be deduced from the comparison of the signals of the two layers. The two sensitive layers are implemented via similar metal oxide layers, an additional layer having a catalyst such as palladium being provided for the catalytically active layer. Alternatively, two different layers can be used, one of which is already catalytically active without an additional layer.

Abstract: A squealer tip formed from a pressure side tip wall and a suction side tip wall extending radially outward from a tip of the turbine blade is disclosed. The pressure and suction side tip walls may be positioned along the pressure sidewall and the suction sidewall of the turbine blade, respectively. The pressure side tip wall may include a chamfered leading edge with film cooling holes having exhaust outlets positioned therein. An axially extending tip wall may be formed from at least two outer linear surfaces joined together at an intersection forming a concave axially extending tip wall. The axially extending tip wall may include a convex inner surface forming a radially outer end to an inner cavity forming a cooling system. The cooling system may include one or more film cooling holes in the axially extending tip wall proximate to the suction sidewall, which promotes increased cooling at the pressure and suction sidewalls.

Abstract: A system for motion control of a cone-beam tomography recording device includes a drive system configured to position a paired radiation source and radiation detector relative to an object. The system further includes a controller configured to: initiate a trigger plan operable as a function of a constant frequency control signal, activate the paired radiation source and radiation detector in accordance with the trigger plan, drive, in response to the trigger plan, the first drive system to a steady operating state derived as a function of the constant frequency, capture a plurality of broadcast radiation signals representative of a plurality of two dimensional images of the object such that the two dimensional images are defined equidistant positions defined by the trigger plan and as a function of the constant frequency signal, and generate a three dimensional representation of the object based on the plurality of two dimensional images.

Abstract: Complex magnetic resonance (MR) image data, acquired from an examination subject that has at least two different spin species, are processed in a method and a device. At least one MR parameter that influences data acquired in an MR data acquisition is determined with spatial resolution. Complex image data are respectively acquired with each of multiple acquisition units in an MR data acquisition at multiple echo times, such that a phase difference between the first spin species and the second spin species is different at least two of the echo times. For multiple image points, a value of the at least one MR parameter is determined so that a function that depends on the at least one MR parameter and the corresponding image point in the complex image data satisfies an extreme condition.

Abstract: A solar thermal power plant is provided. The solar thermal power plant includes a solar collection system configured for utilizing incident solar radiation to heat a heat transfer fluid (HTF) and a power block configured for utilizing the heated HTF to generate power. The solar collection system includes a plurality of pipes for carrying HTF characterized by a first degree of permeability to hydrogen, at least some of the pipes including portions exposed to the atmosphere, and including a membrane made of a material being characterized by a second degree of permeability to hydrogen, the second degree of permeability being higher than the first degree of permeability to hydrogen.

Abstract: Artifacts are reduced during a frequency compression of an audio signal in a hearing device, in particular in a hearing aid. An amplitude information of a source channel is obtained, for example a spectral envelope, from several frequency channels of the audio signal. An amplitude corresponding to the amplitude information is then applied on a signal in a target channel of the several frequency channels, on which the source channel is represented during frequency compression.

Abstract: A dynamic method (100) to better depict context among the different views of an imaging visualization application used by a medical workstation.

Abstract: Embodiments provide an apparatus, method, product and storage medium for secure communication, wherein a message is sent over a secure signalling path to a recipient, the message including a value indicating a key for encrypting or decrypting information for secure communication, or a key derivation value for deriving a key. The message further includes an indication indicating the type of usage of the value. The receiver of the message may return a message which also includes a key or key derivation value and an indication indicating the type of key or type of usage of the value.

Abstract: A burner cleaning device for cleaning burners, in particular for gas turbine burners, with a fuel nozzle and a fuel supply line is disclosed. The burner cleaning device has a rinsing head provided with an opening that is placed on a fuel nozzle of the burner and that enables a rinsing fluid to be supplied to or evacuated from the nozzle, and/or a fluid line that is connected to the fuel supply line of the burner and that enables the rinsing fluid to be supplied to or evacuated from the fuel supply line, and a pump. The pump, the rinsing head and/or the fluid line are fluidically interconnected such that they form a flow path through which the rinsing fluid sequentially flows.

Abstract: A method includes a) loading a first number n of image sets with an image size ky, the ky images of which are distributed in a regular manner over a volume, which is to be loaded in its entirety as a result; b) loading a number nx of image sets starting with a factor x=1, with the images loaded in total being distributed in a regular manner over the volume; c) determining a camera distance and voxel size based on the number of images loaded, a camera distance and voxel size being suitable as parameters for a volume rendering; and d) repeating the two preceding steps b) and c) while increasing the number of image sets with a factor x=x+1, until all the images of the volume have been loaded in their entirety and/or until the step sequence ends.

Abstract: From the network perspective, an uplink resource allocation (PDCCH) is sent that grants an uplink resource to a plurality of user equipments UEs, and the allocation has an indication of a cyclic shift CS for each of the plurality of UEs. The granted uplink resource is mapped to a downlink resource (PHICH) in dependence on the indicated CS for each of the plurality of UEs. The mapping is such that for a predetermined number of UEs being allocated a same uplink resource in a single MU-MIMO uplink resource allocation grant, each pair of said predetermined number of UEs which map to an adjacent downlink resource exhibit an optimized CS relative to one another. The network sends to each of the respective plurality of UEs on the respective mapped downlink resource an indication (ACK/NACK) about data received (on a PUSCH). Apparatus, method, and computer programs for network and UE side implementations are detailed.

Abstract: A power interchange system for interchanging electric energy between a battery and an electric grid is provided The power interchange system includes a rectifier unit for converting alternating current of the electric grid into direct current for charging the battery; a grid measurement device for measuring an electric parameter of the electric grid, and a controller unit for adjusting the direct current for the charging the battery as a function of the electric parameter of the electric grid. Moreover a method for interchanging electric energy between a battery and an electric grid is provided.