Abstract: Hydrogen is stored in materials that absorb and desorb hydrogen with temperature dependent rates. A housing is provided that allows for the storage of one or more types of hydrogen-storage materials in close thermal proximity to a fuel cell stack. This arrangement, which includes alternating fuel cell stack and hydrogen-storage units, allows for close thermal matching of the hydrogen storage material and the fuel cell stack. Also, the present invention allows for tailoring of the hydrogen delivery by mixing different materials in one unit. Thermal insulation alternatively allows for a highly efficient unit. Individual power modules including one fuel cell stack surrounded by a pair of hydrogen-storage units allows for distribution of power throughout a vehicle or other electric power consuming devices.

Abstract: An apparatus and method are described for assembling and disassembling pipe. The device has a drive mechanism that be used to either assemble or disassemble pipe. The drive mechanism has two independent traction drives that can independently impart longitudinal forces on a pipe, either in the same or opposing directions. The drive unit can thus transport pipe or can facilitate the assembly of pipe from modular units or the disassembly of pipe into modular units. The method includes pulling or pushing pipe from the field from a fixed location with a traction device.

Abstract: An exercise device having many advantageous features is described, including the ability to provide a combination of grips to the user, and the ability to easily mount the device to a wall. The exercise device includes a mechanism that permits a limited range of longitudinally motion for an elongated member having grips. The mechanism permits a user to balance while exercising, and provides support resulting from excessive motion of the exercise device.

Abstract: An exercise device having many advantageous features is described, including the ability to provide a combination of grips to the user, and the ability to easily mount the device to a wall. One exercise device described is an inelastic resistance device having a combination grip that includes hand grips and a loop. The hand grip and loop may be used as a foot grip, or alternatively, just the hand grip can be used by the hand. The selection of a specific accessory grip allows the user to exercise by specific body parts and provides for a greater number of possible exercises.

Abstract: A method for using an adjustable exercise device is described that allows for performing a wide variety of different exercises. In one embodiment the exercise device includes an elongated member with ends for supporting a user by their hands, fingers, feet and/or legs, where the device is movably supportable by a structure. The method includes adjusting the distance between the ends, positioning the device relative to the structure, and exercising. The user may support a portion of their weight on the ground and a portion from the ends of the device, and exercise by moving their body with their body thus supported. In alternative embodiments, the device may be supported by a door, a pole, a tree or some other suitable structure.

Abstract: A method and apparatus for designing and building a web page. The apparatus includes a browser based build engine including build tools and a user interface. The build tools are operable to construct a single run time file and an associated database that describe, and when executed, produce the web page. The user interface includes a build frame and a panel. The build frame is operable to receive user input and present a WYSIWIG representation of the web page. The panel includes one or more menus for controlling the form of content to be placed on the web page.

Abstract: The present invention is a photovoltaic cell having improved conversion properties. The cell includes a cover for a photovoltaic device. In one embodiment, the cover includes a fluorescent material that shifts the wavelength of some of the incident light to be closer to the wavelength that produces the least amount of thermal loading on the photovoltaic device. In another embodiment, the cover includes a fluorescent material between two reflective filters. The cell and cover may either be placed together in a stack or separated from one another.

Abstract: A system is described that is suitable for use in determining the location of leaks of gases having a background concentration. The system is a point-wise backscatter absorption gas measurement system that measures absorption and distance to each point of an image. The absorption measurement provides an indication of the total amount of a gas of interest, and the distance provides an estimate of the background concentration of gas. The distance is measured from the time-of-flight of laser pulse that is generated along with the absorption measurement light. The measurements are formated into an image of the presence of gas in excess of the background. Alternatively, an image of the scene is superimosed on the image of the gas to aid in locating leaks. By further modeling excess gas as a plume having a known concentration profile, the present system provides an estimate of the maximum concentration of the gas of interest.

Abstract: The location of gases that are not visible to the unaided human eye can be determined using tuned light sources that spectroscopically probe the gases and cameras that can provide images corresponding to the absorption of the gases. The present invention is a light source for a backscatter absorption gas imaging (BAGI) system, and a light source incorporating the light source, that can be used to remotely detect and produce images of “invisible” gases. The inventive light source has a light producing element, an optical amplifier, and an optical parametric oscillator to generate wavelength tunable light in the IR. By using a multi-mode light source and an amplifier that operates using 915 nm pump sources, the power consumption of the light source is reduced to a level that can be operated by batteries for long periods of time. In addition, the light source is tunable over the absorption bands of many hydrocarbons, making it useful for detecting hazardous gases.

Abstract: An exercise device having many advantageous features is described, including the ability to provide a variety of different accessory grips to the user, and the ability to easily mount the device to a wall. One exercise device described is an inelastic resistance device having integral hand grips. The accessory grips are removably attachable to the integral grip of an exercising device, and provide for gripping by the hands, foot or other body parts. The selection of a specific accessory grip allows the user to exercise by specific body parts and provides for a greater number of possible exercises. Accessory grips are attachable to the integral grips, greatly adding to the flexibility of the device. In addition, a novel hand grip is described having a plurality of cords that can be selected for gripping, and a bracket for mounting a door jamb mountable exercise device to a wall is described.

Abstract: An exercise device having many advantageous features is described, including the ability to provide a user selected resistance from nearly zero resistance to the user's full body weight, the ability to easily adjust between exercises and between users, and the ability to balance the device between reconfigurations to provide for ease-of-use. The device includes an inelastic adjustable length member with two arms and a grip at both ends, and a centrally located anchor that provides for a distribution of the length between the arms. In one embodiment, the exercise device is compact and can be removably attached to a door frame. When grabbing each of the grips and uniformly pulling away from the anchor, the arms of the device center on the anchor.

Abstract: The present invention provides a photoacoustic spectrometer that is field portable and capable of speciating complex organic molecules in the gas phase. The spectrometer has a tunable light source that has the ability to resolve the fine structure of these molecules over a large wavelength range. The inventive light source includes an optical parametric oscillator (OPO) having combined fine and coarse tuning. By pumping the OPO with the output from a doped-fiber optical amplifier pumped by a diode seed laser, the inventive spectrometer is able to speciate mixtures having parts per billion of organic compounds, with a light source that has a high efficiency and small size, allowing for portability. In an alternative embodiment, the spectrometer is scanned by controlling the laser wavelength, thus resulting in an even more compact and efficient design.

Abstract: Methods for treating plants and fields in agricultural applications are provided by selective delivery of superheated steam. Particularly preferred applications include delivery adjacent to grape vine leaves in order to defoliate basal leaves and to kill localized insect pests, and by injecting superheated steam in strawberry beds prior to planting to kill nematodes. The superheated steam is delivered at temperatures in excess of about 250° F.