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Atomic line emission analyzer for hydrogen isotopes

Description: Apparatus for isotopic analysis of hydrogen comprises a low pressure chamber into which a sample of hydrogen is introduced and then exposed to an electrical discharge to excite the electrons of the hydrogen atoms to higher energy states and thereby cause the emission of light on the return to lower energy states, a Fresnel prism made at least in part of a material anomalously dispersive to the wavelengths of interest for dispersing the emitted light, and a photodiode array for receiving the dis… more
Date: May 8, 1991
Creator: Kronberg, James W.
Partner: UNT Libraries Government Documents Department
open access

Binder Enhanced Refuse Derived Fuel

Description: Patent relating to refuse derived fuels and more particularly to binder enhanced refuse derived fuel pellets and utilization of such pellets in solid-fuel fired furnaces.
Date: October 8, 1996
Creator: Daugherty, Kenneth E.; Venables, Barney J. & Ohlsson, Oscar O.
Partner: UNT College of Arts and Sciences
open access

Cooler and particulate separator for an off-gas stack

Description: This report describes an off-gas stack for a melter, furnace or reaction vessel comprising an air conduit leading to two sets of holes, one set injecting air into the off-gas stack near the melter plenum and the second set injecting air downstream of the first set. The first set injects air at a compound angle, having both downward and tangential components, to create a reverse vortex flow, counter to the direction of flow of gas through the stack and also along the periphery of the stack inter… more
Date: April 8, 1991
Creator: Wright, G. T.
Partner: UNT Libraries Government Documents Department
open access

Corrosion-resistant iridium-platinum anode material for high polarization application in corrosive acids

Description: The present invention relates to highly corrosion resistant components for use in an electrochemical cell. Specifically, these components are resistant to corrosion under very extreme conditions such as exposure to aqua regia in the presence of a constant current density of 100mA/m{sup 2}. The components are comprised of an iridium-platinum alloy that comprises less than 30% iridium. In a preferred embodiment of the present invention, the iridium-platinum alloy comprises 15-20% iridium. In anot… more
Date: September 8, 1993
Creator: Farmer, J.; Summers, L. & Lewis, P.
Partner: UNT Libraries Government Documents Department
open access

Cyanoethylated Compounds as Additives in Lithium/Lithium Ion Batteries

Description: The power loss of lithium/lithium ion battery cells is significantly reduced, especially at low temperatures, when about 1% by weight of an additive is incorporated in the electrolyte layer of the cells. The usable additives are organic solvent soluble cyanoethylated polysaccharides and poly(vinyl alcohol). The power loss decrease results primarily from the decrease in the charge transfer resistance at the interface between the electrolyte and the cathode.
Date: May 8, 1998
Creator: Nagasubramanian, Ganesan
Partner: UNT Libraries Government Documents Department
open access

Electrochemical Membrane Incinerator

Description: Electrochemical incineration of benzoquinone was evaluated as a model for the mineralization of carbon in toxic aromatic compounds. A Ti or Pt anode was coated with a film of the oxides of Ti, Ru, Sn and Sb. This quaternary metal oxide film was stable; elemental analysis of the electrolyzed solution indicated the concentration of these metal ions to be 3 {micro}g/L or less. The anode showed good reactivity for the electrochemical incineration of benzoquinone. The use of a dissolved salt matrix … more
Date: December 8, 1998
Creator: Johnson, Dennis C.; Houk, Linda L. & Feng, Jianren
Partner: UNT Libraries Government Documents Department
open access

Elimination of ``memory`` from sample handling and inlet system of a mass spectrometer

Description: This paper describes a method for preparing the sample handling and inlet system of a mass spectrometer for analysis of a subsequent sample following analysis of a previous sample comprising the flushing of the system interior with supercritical CO{sub 2} and venting the interior. The method eliminates the effect of system ``memory`` on the subsequent analysis, especially following persistent samples such as xenon and krypton.
Date: May 8, 1991
Creator: Chastgner, P.
Partner: UNT Libraries Government Documents Department
open access

False color viewing device

Description: This invention consists of a viewing device for observing objects in near-infrared false-color comprising a pair of goggles with one or more filters in the apertures, and pads that engage the face for blocking stray light from the sides so that all light reaching, the user`s eyes come through the filters. The filters attenuate most visible light and pass near-infrared (having wavelengths longer than approximately 700 nm) and a small amount of blue-green and blue-violet (having wavelengths in th… more
Date: May 8, 1991
Creator: Kronberg, J. W.
Partner: UNT Libraries Government Documents Department
open access

Laser cutting with chemical reaction assist

Description: This invention is comprised of a method for cutting with a laser beam where an oxygen-hydrocarbon reaction is used to provide auxiliary energy to a metal workpiece to supplement the energy supplied by the laser. Oxygen is supplied to the laser focus point on the workpiece by a nozzle through which the laser beam also passes. A liquid hydrocarbon is supplied by coating the workpiece along the cutting path with the hydrocarbon prior to laser irradiation or by spraying a stream of hydrocarbon thro… more
Date: April 8, 1991
Creator: Gettemy, D. J.
Partner: UNT Libraries Government Documents Department
open access

Manufacture of silicon carbide using solar energy

Description: This invention is comprised of a method is described for producing silicon carbide particles using solar energy. The method is efficient and avoids the need for use of electrical energy to heat the reactants. Finely divided silica and carbon are admixed and placed in a solar-heated reaction chamber for a time sufficient to cause a reaction between the ingredients to form silicon carbide of very small particle size. No grinding of silicon carbide is required to obtain small particles. The method… more
Date: April 8, 1991
Creator: Glatzmaier, G. C.
Partner: UNT Libraries Government Documents Department
open access

Method for Plutonium-Gallium Separation by Anodic Dissolution of a Solid Plutonium-Gallium Alloy

Description: Purified plutonium and gallium are efficiently recovered from a solid plutonium-gallium (Pu-Ga) alloy by using an electrorefining process. The solid Pu-Ga alloy is the cell anode, preferably placed in a moving basket within the electrolyte. As the surface of the Pu-Ga anode is depleted in plutonium by the electrotransport of the plutonium to a cathode, the temperature of the electrolyte is sufficient to liquify the surface, preferably at about 500 C, resulting in a liquid anode layer substantia… more
Date: December 8, 1998
Creator: Miller, William E. & Tomczuk, Zygmunt
Partner: UNT Libraries Government Documents Department
open access

Nondestructive method and apparatus for imaging grains in curved surfaces of polycrystalline articles

Description: A nondestructive method, and associated apparatus, are provided for determining the grain flow of the grains in a convex curved, textured polycrystalline surface. The convex, curved surface of a polycrystalline article is aligned in a horizontal x-ray diffractometer and a monochromatic, converging x-ray beam is directed onto the curved surface of the polycrystalline article so that the converging x-ray beam is diffracted by crystallographic planes of the grains in the polycrystalline article. T… more
Date: September 8, 1993
Creator: Carpenter, D.A.
Partner: UNT Libraries Government Documents Department
open access

Reversibly immobilized biological materials in monolayer films on electrodes

Description: A method is provided for reversibly binding charged biological particles in a fluid medium to an electrode surface. The method comprises treating (e.g., derivatizing) the electrode surface with an electrochemically active material; connecting the electrode to an electrical potential; and exposing the fluid medium to the electrode surface in a manner such that the charged particles become adsorbed on the electrode surface.
Date: April 8, 1991
Creator: Weaver, P. F. & Frank, A. J.
Partner: UNT Libraries Government Documents Department
open access

Titanium Carbide Bipolar Plate for Electrochemical Devices

Description: Titanium carbide comprises a corrosion resistant, electrically conductive, non-porous bipolar plate for use in an electrochemical device. The process involves blending titanium carbide powder with a suitable binder material, and molding the mixture, at an elevated temperature and pressure.
Date: May 8, 1998
Creator: LaConti, Anthony B.; Griffith, Arthur E.; Cropley, Cecelia C. & Kosek, John A.
Partner: UNT Libraries Government Documents Department
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