Abstract: A technique is provided for manufacturing a support structure for a source of magnetic field in a magnetic resonance imaging system. The technique includes assembling a plurality of layers of a material permeable to magnetic field to form a first support structure, assembling a plurality of layers of a material permeable to magnetic field to form a second support structure, providing at least one of a plate and a post made of a material permeable to magnetic field to form a third support structure, and assembling the first support structure, the second support structure and the third support structure. The first support structure is associated with the second support structure through the third support structure.

Abstract: A fuel cell assembly comprising at least one metallic component, at least one ceramic component and a structure disposed between the metallic component and the ceramic component. The structure is configured to have a lower stiffness compared to at least one of the metallic component and the ceramic component, to accommodate a difference in strain between the metallic component and the ceramic component of the fuel cell assembly.

Abstract: A composite structure of a z-axis interconnect is presented. The composite structure includes a plurality of layers of backing material alternatingly arranged between a plurality of interconnect layers, where the plurality of interconnect layers is configured to facilitate coupling the composite structure of the z-axis interconnect to a transducer array, where the composite structure of z-axis interconnect is configured for use in an invasive probe.

Abstract: Systems and methods are provided for acquiring and reconstructing projection data that is mathematically complete or sufficient using a computed tomography (CT) system having stationary distributed X-ray sources and detector arrays. In one embodiment, a non-sequential activation is employed to acquire mathematically complete or sufficient projection data. In another embodiment, a distributed source is provided as a generally semicircular segment. In such an embodiment, an alternating activation scheme may be employed to allow one or more helices of image data to be acquired.

Abstract: A lamp having a ceramic arc envelope, an end structure coupled to the ceramic arc envelope and extending across an opening in the ceramic arc envelope, where the end structure comprises a passageway communicative with an interior chamber of the ceramic arc envelope is provided. The lamp further includes a molybdenum-rhenium electrode lead extending through and sealed with the passageway. The molybdenum-rhenium electrode lead includes a molybdenum-rhenium alloy. Furthermore, the lamp includes an arc electrode tip coupled to the electrode lead inside the interior chamber.

Abstract: A diagnostic imaging system includes an x-ray source that emits a beam of x-ray energy toward an object to be imaged and an energy discriminating (ED) detector that receives the x-ray energy emitted by the x-ray energy source. The ED detector includes a first layer having a first thickness, wherein the first layer comprises a semiconductor configurable to operate in at least an integrating mode and a second layer having a second thickness greater than the first thickness, and configured to receive x-rays that pass through the first layer. The system further includes a data acquisition system (DAS) operably connected to the ED detector and a computer that is operably connected to the DAS. The computer is programmed to identify saturated data in the second layer and substitute the saturated data with non-saturated data from a corresponding pixel in the first layer.

Abstract: A system and method for ascertaining the identity of an object within an enclosed article. The system includes an acquisition subsystem with a computed tomography machine and an alternate modality subsystem. The alternate modality subsystem includes a detector mounted to a rotatable gantry. The detector may be a quadrupole resonance unit, a dual energy x-ray unit, or a backscatter x-ray unit. The acquisition subsystem analyzes an article and distinguishes regions of interest (may contain contraband) from regions of no interest (do not contain contraband). The article is then transported to the alternate modality subsystem at which the detector further analyzes just the regions of interest.

Abstract: A clearance sensing system is disclosed. The system includes a probe separated from a test object by a variable distance d. The system also includes an alternating current (AC) source for supplying a current through the probe, wherein the AC source and the probe are configured to generate a controlled plasma channel between a tip of the probe and the test object. The system further includes a processing unit configured to determine the variable distance d based on a voltage difference between the tip of the probe and the test object.

Abstract: A method of detecting onset of a gas turbine condition, such as compressor stall, includes receiving data indicative of an operating parameter of a compressor of the gas turbine. The method also includes performing a wavelet transformation on the data to generate wavelet transformed data. The wavelet transformation is configured to affect a processing characteristic regarding a performance of the wavelet transformation. Features indicative of onset of the gas turbine condition in the wavelet transformed data are then identified to provide an indication for controlling the gas turbine to prevent compressor stall from occurring. A system for detecting onset of compressor stall in a gas turbine includes a sensor for providing data indicative of an operating parameter of the compressor and a processor for performing a wavelet transform on the data to identify features of the optimized wavelet transformed data indicative of onset of stall.

Abstract: A hybrid power generation system for generating electrical power comprises a compressor for producing a compressed oxidant and a recuperator in flow communication with the compressor. The hybrid power generation system further comprises a fuel cell assembly comprising a plurality of fuel cells in flow communication with the recuperator to provide the compressed oxidant for the fuel cell assembly. The hybrid power generation system further comprises a tail gas burner in flow communication with the fuel cell assembly. A control system is used for controlling the amount of cathode exhaust stream introduced in the tail gas burner for stable combustion and reduction of fuel and carbon monoxide emission. The hot compressed gas from the tail gas burner is introduced to a turbine, where the hot compressed gas is expanded, thereby producing electrical power and an expanded gas.

Abstract: A power conversion system comprises a converter coupled to a power source and configured to convert a DC power to a variable AC power signal. The power conversion system may further comprise a process control unit coupled to the converter and configured to control the variable AC power signal. The power conversion system may also further comprise a transformer having a primary side and a secondary side, the primary side receiving the variable AC power signal from the converter and a passive rectifier coupled to the secondary side of the transformer. The transformer may be adapted to provide galvanic isolation between the power source and an electro-chemical process. The passive rectifier is adapted to convert the variable AC power to the variable DC power and to deliver the variable DC power to the electro-chemical processing unit.

Abstract: An electrolyzer assembly comprises at least one electrolyzer cell including at least two electrodes and an electrolyte interposed therebetween. The electrolyzer assembly further comprises an interconnect structure in intimate contact with at least one of the two electrodes or the electrolyte. The interconnect structure includes at least one flow channel initially defined by a removable sacrificial material, wherein the interconnect structure is configured to provide support for the electrodes and the electrolyte.

Abstract: A device having an electrode-insulator layer-group III nitride layer structure, wherein an interface between the insulator layer and the group III nitride semiconductor layer lies along a non-polar plane of the group III nitride semiconductor layer is provided.

Abstract: A system for identifying an arcing event in electrical distribution systems is provided. The system comprises a sensor configured to detect ultraviolet light and to generate a signal indicative of the arcing event propagating from the electrical distribution system. A processor coupled to the sensor and configured to analyze an ultraviolet light characteristic from the signal and generate an arc fault signal. A protective device configured to receive the arc fault signal and to mitigate the arcing event in the electrical distribution system.

Abstract: A method for extracting parameters of a cutting tool is provided. The method includes obtaining a measurement data set having a point cloud corresponding to a surface of the cutting tool and virtually slicing the point cloud at a pre-determined section to obtain a set of points on the pre-determined section. The method also includes generating a plurality of curves through the set of points and optimizing the plurality of curves to generate optimized fitting curves and extracting the parameters of the cutting tool from the optimized fitting curves. Furthermore, based on the presented rotary angle projection technique, a plurality of parameters can be extracted for the cutting tool.

Abstract: A hybrid capacitive storage system and method for storing electrical energy and hydrogen comprising at least a first dielectric layer, which dielectric layer is substantially impermeable to hydrogen. The hybrid storage system further comprises at least a first catalytic electrode layer disposed on at least a portion of a first surface of said first dielectric layer, which first catalytic electrode layer converts molecular hydrogen into atomic hydrogen, an electrode layer disposed on at least a portion of a second surface of said first dielectric layer, which electrode layer is selectively electrically connected to said first catalytic electrode layer; and at least one field generator for selectively applying a field to said storage system.

Abstract: A fuel cell assembly includes at least one fuel cell including at least two electrodes and an electrolyte. An interconnect structure includes at least one flow channel initially defined by a removable sacrificial material. A method of forming the fuel cell assembly includes the steps of providing the interconnect structure having at least one flow channel, depositing the sacrificial material into the flow channel, depositing an electrode or an electrode/electrolyte material upon the interconnect structure and the sacrificial material, and processing the fuel cell so as to remove the sacrificial material.

Abstract: A method for estimating a trend in exhaust gas temperature in a turbine engine includes sampling exhaust gas temperature and a plurality of variables associated with the exhaust gas temperature over a set of observation times for a turbine engine to acquire exhaust gas temperature data. A trend in the exhaust gas temperature for the specific turbine engine is identified by removing the effect of the plurality of variables on the exhaust gas temperature data.

Abstract: A system is provided. The system includes an internal combustion engine having an intake manifold and an exhaust manifold. The system also includes a high pressure turbocharger having a variable geometry high pressure turbine drivingly coupled to a high pressure compressor, wherein the variable geometry high pressure turbine is driven by a first portion of exhaust gases from the exhaust manifold, wherein the high pressure compressor is configured to compress an intake air and to provide the compressed intake air to the intake manifold.

Abstract: A method of image reconstruction comprising: obtaining a Helmholtz reciprocal pair of images of an object, the images comprising a first image and a corresponding reciprocal image; determining an imaging geometry associated with the obtaining; selecting a plurality of points in the first image and identifying corresponding candidate points in the corresponding reciprocal image; matching a selected point of the plurality of points and a candidate point of the corresponding candidate points. A method of image registration with an object comprising: obtaining a Helmholtz reciprocal pair of images of an object, the Helmholtz reciprocal pair of images comprising a first image and a corresponding reciprocal image; estimating a pose for the object; predicting an estimated image corresponding to the pose and one image of the reciprocal pair of images; comparing the estimated image with a corresponding actual image from the pair of images; and refining the estimating a pose based on the comparing.