Abstract: A method includes receiving image data from a camera coupled to an air intake system of a gas turbine engine. The image data corresponds to an air passage of the air intake system. The method also includes comparing the received image data to reference image data of the air intake system. The method also includes generating an icing notification based at least in part on the comparison when a difference between the received image data and reference image data is greater than an icing threshold.

Abstract: A fetal pulse monitor includes an ultrasound crystal. An ultrasound controller is electrically connected to the ultrasound crystal and operates the ultrasound crystal to produce ultrasound signals and receive reflected ultrasound signals. A wireless transmitter is electrically connected to the ultrasound controller. A biocompatible housing at least partially surrounds the ultrasound crystal, ultrasound controller, and the wireless transmitter. A system for monitoring fetal heart rate includes a fetal pulse monitor configured for insertion into a womb of a patient and for attachment to a fetus within the womb. The fetal pulse monitor includes an ultrasound crystal, an ultrasound controller electrically connected to the ultrasound crystal, and a wireless transmitter electrically connected to the ultrasound controller. A patient monitoring device is external to the womb and includes a wireless receiver and a processor that detects instantaneous fetal heart rate from the received ultrasound signal.

Abstract: Systems and methods for monitoring compliance with a request not to run a type of load (e.g., a high-power-consuming appliance) during a demand response event are provided. One such system may include storage containing a load profile representative of a pattern of power consumption by a type of load and data processing circuitry. The data processing circuitry may compare a power usage profile representing power consumption by a consumer at least over a period of time to the load profile to determine whether the consumer is running the type of load over the period of time.

Abstract: In one embodiment, a component for a power generation system includes an interior volume for containing steam condensate or gas turbine exhaust gas. A phase change material is disposed around an external surface of the combined cycle power generation system component.

Abstract: The invention relates to a method of calibrating a pulse oximeter, in which the effects caused by tissue of a subject can be taken into account. A detector output signal is measured when living tissue of the subject is present between emitters and the detector in a sensor. Nominal calibration and nominal calibration characteristics are read from a memory, whereupon values for the same nominal characteristics for the sensor on living tissue of the subject are established using the detector output signal. Then, changes in the nominal calibration characteristics induced by the living tissue are calculated and a subject-specific calibration is formed by correcting the nominal calibration with the changes. Finally, the hemoglobin fractions are solved using the corrected nominal calibration.

Abstract: Systems and methods are disclosed for non-intrusively inspecting circuit breakers, which may include one or more connector assemblies. An X-ray unit may be placed at a first location around the circuit breaker while at least one digital imaging plate may be placed at a second location around the circuit breaker. The X-ray unit may generate X-rays, where at least a portion of the generated X-rays traverse a plane that includes at least a portion of the connector assembly and at least a portion of the at least one digital imaging plate. The image that includes at least a portion of the connector assembly may be retrieved from the digital imaging plate and inspected to determine a status of the circuit breaker.

Abstract: An integrated compressor disk and compressor blade (BLISK) having a specified shape is prepared by an electrochemical machining process having a cathode defined by a set of cathode shape parameters. A trial BLISK is prepared using a cathode defined by a set of trial shape parameters, and a set of deviations of the trial shape from the specified shape at a plurality of surface grid points on a surface of the trial article is measured. A set of revised cathode shape parameters is determined using at least one reshaping routine specific to the BLISK. A reshaped article is prepared using the electrochemical machining process and a reshaped cathode defined by the revised cathode shape parameters.

Abstract: A phased array sector scanning ultrasonic system includes a separate receive channel for each respective element in an ultrasonic transducer array. Each receive channel imparts a delay to the echo signal produced by each respective element. The delayed echo signals are summed to form a steered, dynamically focused and dynamically windowed receive beam. A plurality of channels in the receiver are operated by respective receive channel control circuits to apodize the sampled echo signals produced by the transducer array elements with respective selected window function weighting factors as the echo signals are received. Each receive channel control circuit stores a set of window function weighting factors at successive address locations in a memory and includes an addressing circuit for producing an address useable by the memory to provide a desired window function weighting factor for each receive channel from the stored set.

Abstract: A patient isolation device is used as a safety device to provide electrical insulation between medical electronic equipment and portions of the equipment which come in contact with the patient. In one implementation of the patient isolation device, an RF coil is incorporated in a catheter connected to medical electronic equipment which tracks the position of the catheter. Typically, there is also medical imaging electronics to provide internal images of the subject along with an indication of the location of the catheter. Typically, the signal from the RF coil is provided to a preamplifier to amplify the signal. The isolation device is placed between the RF coil and the preamplifier such that MR response signals may pass through to the preamplifiers but in the event of a short or electrical malfunction the line voltage will not pass backward into the RF coil causing damage to the patient.

Abstract: Compressive residual stresses can be developed by underwater plasma transferred arc welding. The development of these compressive stresses act to prevent hot cracking and He embrittlement that can develop during welding or stress corrosion cracking that can develop subsequent to the welding operation.

Abstract: A lanced strip of generally thin ferromagnetic material adapted to be edgewise wound into a core for a salient pole dynamoelectric machine. A continuous yoke section of the lanced strip extends generally lengthwise thereof and includes a pair of generally opposite edges, and a set of spaced apart notches in one of the opposite edges with each notch having an arcuate edge therein, respectively. A set of spaced apart teeth are integral with the other of the opposite edges and extend generally laterally from the yoke section, and the teeth includes a set of free end sections each having another arcuate edge defining at least a part thereof and with respective ones of the first named and another arcuate edges having a common centerpoint, respectively.A core for a salient pole dynamoelectric machine is also disclosed.

Abstract: Compatiblized mixtures of a polyphenylene ether, a polyamide and a compatibilizer are described. The mixtures have improved physical properties as a result of using in the mixtures a polyamide having a terminal amine group to terminal carboxyl group ratio of greater than 1.