Abstract: GaN-based heterojunction field effect transistor (HFET) sensors are provided with engineered, functional surfaces that act as pseudo-gates, modifying the drain current upon analyte capture. In some embodiments, devices for sensing nitric oxide (NO) species in a NO-containing fluid are provided which comprise a semiconductor structure that includes a pair of separated GaN layers and an AlGaN layer interposed between and in contact with the GaN layers. Source and drain contact regions are formed on one of the GaN layers, and an exposed GaN gate region is formed between the source and drain contact regions for contact with the NO-containing fluid. The semiconductor structure most preferably is formed on a suitable substrate (e.g., SiC). An insulating layer may be provided so as to cover the semiconductor structure. The insulating layer will have a window formed therein so as to maintain exposure of the GaN gate region and thereby allow the gate region to contact the NO-containing fluid.

Abstract: A variable potentiometer with a wiper terminal and first and second terminals has relay switches for shorting or for unshorting resistors. When resistance is reduced between the wiper and one of said terminals, resistance is increased between the wiper and another terminal. In one embodiment two strings of resistors with the same nominal values are used between the wiper and the terminals. In another embodiment, a single string of resistors are used and are switched into either the electrical connection between the wiper and the first terminal or between the wiper and the second terminal. When resistance is lowered between the wiper and one of said first or second terminals a first resistor is replaced with a first short circuit and when resistance is increased between said wiper and another of said first and second terminals a second short circuit is replaced with the first resistor.

Abstract: A variable potentiometer with a wiper terminal and first and second terminals has relay switches for shorting or for unshorting resistors. When resistance is reduced between the wiper and one of said terminals, resistance is increased between the wiper and another terminal. In one embodiment two strings of resistors with the same nominal values are used between the wiper and the terminals. In another embodiment, a single string of resistors are used and are switched into either the electrical connection between the wiper and the first terminal or between the wiper and the second terminal. When resistance is lowered between the wiper and one of said first or second terminals a first resistor is replaced with a first short circuit and when resistance is increased between said wiper and another of said first and second terminals a second short circuit is replaced with the first resistor.

Abstract: The invention provides a reusable apparatus for shipping seating units. The apparatus comprises first and second seat holding members. The first seat holding member includes a first base portion and a first back portion. The second seat holding member includes a second base portion and a second back portion. The first back portion is rotatably attached to the second base portion. A first seating unit secured to the first base portion and a second seating unit secured to the second base portion may be rotated such that the seating units are inverted with respect to each other and the first base portion is adjacent the second back portion.

Abstract: An electromagnetic apparatus, comprises a conductive loop comprising two parallel conductive legs joined at a free end by a sample contacting member and a magnetic circuit that imposes a magnetic field in opposite directions across the respective legs. A method of mechanically characterizing a sample, comprises imposing a magnetic field in opposite directions in each of two parallel conductive legs of a conductive loop, the legs joined at a free end by a sample contacting member.

Abstract: A self-contained transportable life support system for resuscitation, stabilization, and transport of a patient has an environmentally controlled housing for receiving and supporting a patient and a plurality of medical devices disposed within the housing. A control circuit attached to the housing has at least a portion thereof extending to an external surface of the housing for regulating operation of the medical devices and environmental conditions of within the housing in response to monitored life support conditions of the patient.

Abstract: An evacuated cavity is hermetically sealed between a baseplate and faceplate of a flat panel display. Melting a glass powder, or frit, on the perimeter of the viewing area forms the hermetic seal. After melting the frit, a first fluid is circulated through the cavity to speed cooling. To further expedite the cooling of the flat panel display, a second fluid flows externally along the contour of the flat panel display to insure that the cooling is uniform and thereby avoid thermal shock.

Abstract: The invention provides a reusable apparatus for shipping seating units. The apparatus comprises first and second seat holding members. The first seat holding member includes a first base portion and a first back portion. The second seat holding member includes a second base portion and a second back portion. The first back portion is rotatably attached to the second base portion. A first seating unit secured to the first base portion and a second seating unit secured to the second base portion may be rotated such that the seating units are inverted with respect to each other and the first base portion is adjacent the second back portion.

Abstract: A high-velocity, accurately responsive impingement heater provides heated air at a substantially constant temperature to a process location to effect control of a process. The heater includes an air line for conducting air from an inlet thereof to the process location. A heat exchanger, including a plurality of electrical heating elements, heats air conducted through the air line. A power driver is connected to the heat exchanger and applies current to the heat exchanger. A controller is connected to the driver and receives a predetermined process temperature input from the user, as required for effecting control of the process. A process temperature sensor is positioned at the process location and measures the temperature of the air provided to the process location. The process temperature sensor provides a process temperature signal to the controller which is indicative of the air temperature at the process location.

Abstract: A self-contained transportable life support system for resuscitation, stabilization, and transport of a patient has an environmentally controlled housing for receiving and supporting a patient and a plurality of medical devices disposed within the housing. A control circuit attached to the housing has at least a portion thereof extending to an external surface of the housing for regulating operation of the medical devices and environmental conditions of within the housing in response to monitored life support conditions of the patient.

Abstract: A transportable life support system for providing medical care to a patient while transporting the patient from one location to another has a platform configured to receive the patient, a plurality of medical devices attached to the platform for providing medical monitoring and medical therapy to the patient, and a control and display panel comprising controls and displays for the medical devices. The control and display panel provides a centralized location for monitoring and controlling the medical devices so as to mitigate a need for an operator to move about the platform in order to individually observe a display for each medical device and to individually control each medical device.

Abstract: A portable compressed air heating system for delivering a flow of heated air directed at a substrate. The system first includes a hot air distribution member for placement in juxtaposition with the substrate and thereafter distributing heated air collected from a heater module. Second, the system includes a heater module for receiving and heating a continuous volume of air, and is equipped with an adjustable velocity production element for drawing and delivering heated air to the hot air distribution member. An interface conduit connects the heater module to a system controller disposed upstream therefrom, and includes circuitry directed by the controller for operation of the heating module. The system controller includes an air-in port for receiving air, an air-out port for distributing air, a heater-power conduit, a temperature controller, an air pressure monitor, and an air pressure adjuster.

Abstract: A self-contained transportable life support system for resuscitation, stabilization, and transport of a patient has an environmentally controlled housing for receiving and supporting a patient and a plurality of medical devices disposed within the housing. A control circuit attached to the housing has at least a portion thereof extending to an external surface of the housing for regulating operation of the medical devices and environmental conditions of within the housing in response to monitored life support conditions of the patient.