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Plutonium recovery from spent reactor fuel by uranium displacement

Description: This report discusses a process for separating uranium values and transuranic values from fission products containing rare earth values when the values which are contained together in a molten chloride salt electrolyte. A molten chloride salt electrolyte with a first ratio of plutonium chloride to uranium chloride is contacted with both a solid cathode and an anode having values of uranium and fission products including plutonium. A voltage is applied across the anode and cathode electrolytical… more
Date: December 31, 1991
Creator: Ackerman, J. P.
Partner: UNT Libraries Government Documents Department
open access

Magnesium transport extraction of transuranium elements from LWR fuel

Description: This report discusses a process of separating transuranium actinide values from uranium values present in spent nuclear oxide fuels which contain rare earth and noble metal fission products. The oxide fuel is reduced with Ca metal in the presence of CaCl{sub 2} and a U-Fe alloy containing not less than about 84% by weight uranium at a temperature in the range of from about 800{degrees}C to about 850{degrees}C to produce additional uranium metal which dissolves in the U-Fe alloy raising the uran… more
Date: December 31, 1991
Creator: Ackerman, J. P.; Battles, J. E.; Johnson, T. R.; Miller, W. E. & Pierce, R. D.
Partner: UNT Libraries Government Documents Department
open access

High energy bursts from a solid state laser operated in the heat capacity limited regime

Description: Solid state laser technology is a very well developed field and numerous embodiments and modes of operation have been demonstrated. A more recent development has been the pumping of a solid state laser active medium with an array of diode lasers (diode pumping, for short). These diode pump packages have previously been developed to pump solid state lasers with good efficiency, but low average power. This invention is a method and the resulting apparatus for operating a solid state laser in the … more
Date: December 31, 1994
Creator: Albrecht, G.; George, E.V. & Krupke, W.
Partner: UNT Libraries Government Documents Department
open access

A flow injection trace gas analyzer for on-site determination of organoarsenicals

Description: Lewisite was developed during World War I as a chemical warfare agent. Several countries produced large quantities of the agent before, during and after World War II. The Chemical Weapons Convention treaty, recently signed, requires the destruction of Lewisite. In implementing the Chemical Weapons Convention treaty, it will be necessary to monitor the facilities at which various chemical agents including Lewisite may be stored for compliance with the agreement. The inspection procedures must me… more
Date: December 31, 1995
Creator: Aldstadt, J.H. III
Partner: UNT Libraries Government Documents Department
open access

Method for separating constituents from solution employing a recyclable Lewis acid metal-hydroxy gel

Description: This invention permits radionuclides, heavy metals, and organics to be extracted from solution by scavenging them with an amorphous gel. In the preferred embodiment, a contaminated solution (e.g. from soil washing, decontamination, or groundwater pumping) is transferred to a reaction vessel. The contaminated solution is contacted by the sequestering reagent which might contain for example, aluminate and EDTA anions in a 2.5 M NaOH solution. The pH of the reagent bearing solution is lowered on c… more
Date: December 31, 1995
Creator: Alexander, D. H.
Partner: UNT Libraries Government Documents Department
open access

Phosphazene polymer containing composites and method for making phosphazene polymer containing composites

Description: The object of the invention is to provide a composite material comprised of phosphazene polymer. A feature of phosphazene-containing composites is their superior stiffness, thermal stability, and hardness which is lacking in more typical composite constituents. An advantage of using phosphazene composites is a wider range of applications, including uses in harsh environments. Another object of the present invention provides a method for producing phosphazene-containing composite materials throu… more
Date: December 31, 1990
Creator: Allen, C. A.; Grey, A. E.; McCaffrey, R. R.; Simpson, B. M. & Stone, M. L.
Partner: UNT Libraries Government Documents Department
open access

Separation of metal ions from aqueous solutions

Description: This invention is comprised of a process and apparatus for quantitatively and selectively separating metal ions from mixtures thereof in aqueous solution. The apparatus includes, in combination, a horizontal electrochemical flowing cell containing flowing bulk electrolyte solution and an aqueous, metal ion-containing solution, the cell containing a metal mesh working electrode, a counter electrode positioned downstream from the working electrode, an independent variable power supply/potentiosta… more
Date: December 31, 1991
Creator: Almon, A.
Partner: UNT Libraries Government Documents Department
open access

Method and device for disinfecting a toilet bowl

Description: This invention is comprised of a method and device for disinfecting a flush toilet. The device is an electrocell mounted in the tank of the toilet, with two wire mesh electrodes immersed in the water in the tank and a battery applying approximately one to two volts of electric potential to the electrodes so that they chemically reduce a portion of the water in the tank to hydrogen peroxide. Then, when the tank is flushed, the peroxide is carried into the bowl where it can kill bacteria.
Date: December 31, 1992
Creator: Almon, A. C.
Partner: UNT Libraries Government Documents Department
open access

Voltametric analysis apparatus and method

Description: An apparatus and method are disclosed for electrochemical analysis of elements in solution. An auxiliary electrode a reference electrode and five working electrodes are positioned in a container containing a sample solution. The working electrodes are spaced apart evenly from each other and auxiliary electrode to minimize any inter-electrode interference that may occur during analysis. An electric potential is applied between auxiliary electrode and each of the working electrodes. Simultaneous … more
Date: December 1991
Creator: Almon, A. C.
Partner: UNT Libraries Government Documents Department
open access

Oil/gas separator for installation at burning wells

Description: An oil/gas separator is disclosed that can be utilized to return the burning wells in Kuwait to production. Advantageously, a crane is used to install the separator at a safe distance from the well. The gas from the well is burned off at the site, and the oil is immediately pumped into Kuwait`s oil gathering system. Diverters inside the separator prevent the oil jet coming out of the well from reaching the top vents where the gas is burned. The oil falls back down, and is pumped from an annular… more
Date: December 31, 1991
Creator: Alonso, C. T.; Bender, D. A. & Bowman, B. R.
Partner: UNT Libraries Government Documents Department
open access

Micromachined Silicon Electrostatic Chuck

Description: In the field of microelectronics, and in particular the fabrication of microelectronics during plasma etching processes, electrostatic chucks have been used to hold silicon wafers during the plasma etching process. Current electrostatic chucks that operate by the {open_quotes}Johnson-Rahbek Effect{close_quotes} consist of a metallic base plate that is typically coated with a thick layer of slightly conductive dielectric material. A silicon wafer of approximately the same size as the chuck is pl… more
Date: December 31, 1994
Creator: Anderson, R. A. & Seager, C. H.
Partner: UNT Libraries Government Documents Department
open access

Portable gas chromatograph-mass spectrometer

Description: A gas chromatograph-mass spectrometer (GC-MS) for use as a field portable organic chemical analysis instrument. The GC-MS is designed to be contained in a standard size suitcase, weighs less than 70 pounds, and requires less than 600 watts of electrical power at peak power (all systems on). The GC-MS includes: a conduction heated, forced air cooled small bore capillary gas chromatograph, a small injector assembly, a self-contained ion/sorption pump vacuum system, a hydrogen supply, a dual compu… more
Date: December 31, 1994
Creator: Andresen, Brian D.; Eckels, Joel D.; Kimmons, James F. & Myers, David W.
Partner: UNT Libraries Government Documents Department
open access

Crystalline titanate catalyst supports

Description: A series of new crystalline titanates (CT) are shown to have considerable potential as catalyst supports. For Pd supported catalyst, the catalytic activity for pyrene hydrogenation was substantially different depending on the type of CT, and one was substantially more active than Pd on hydrous titanium oxide (HTO). For 1-hexene hydrogenation the activities of the new CTs were approximately the same as for the hydrous metal oxide supports.
Date: December 31, 1991
Creator: Anthony, Rayford G. & Dosch, Robert G.
Partner: UNT Libraries Government Documents Department
open access

Clay enhancement of methane, low molecular weight hydrocarbon and halocarbon conversion by methanotrophic bacteria

Description: The invention described in this report relates to a combined system of an apparatus and a method of increasing the rates of oxidation of gases and hazardous vapors by methanotrophic and other bacteria. The gases of interest are methane and trichlorethylene and other hazardous vapors. In a preferred embodiment, the oxidation rate of methane is improved by the addition of clays, e.g., kaolin, sometimes called ``China clay.``
Date: December 31, 1991
Creator: Apel, W. A. & Dugan, P. R.
Partner: UNT Libraries Government Documents Department
open access

Fading channel simulator

Description: This invention relates to high frequency (HF) radio signal propagation through fading channels and, more particularly, to simulation of fading channels in order to characterize HF radio system performance in transmitting and receiving signals through such fading channels. Fading channel effects on a transmitted communication signal are simulated with both frequency and time variations using a channel scattering function to affect the transmitted signal. A conventional channel scattering functio… more
Date: December 31, 1991
Creator: Argo, Paul E. & Fitzgerald, T. Joseph
Partner: UNT Libraries Government Documents Department
open access

Radiation detector using a bulk high {Tc} superconductor

Description: A radiation detector is provided, wherein a bulk high T superconducting sample is placed in a magnetic field and maintained at a superconducting temperature. Photons of incident radiation will cause localized heating in superconducting loops of the sample destroying trapped flux and redistributing the fluxons, and reducing the critical current of the loops. Subsequent cooling of the sample in the magnetic field will cause trapped flux redistributed Abrikosov fluxons and trapped Josephson fluxon… more
Date: December 31, 1992
Creator: Artusom, J. F.; Franks, L. A.; Hull, K. L. & Symko, O. G.
Partner: UNT Libraries Government Documents Department
open access

A tube-in-tube thermophotovoltaic generator

Description: A thermophotovoltaic device includes at least one thermal radiator tube, a cooling tube concentrically disposed within each thermal radiator tube and an array of thermophotovoltaic cells disposed on the exterior surface of the cooling tube. A shell having a first end and a second end surrounds the thermal radiator tube. Inner and outer tubesheets, each having an aperture corresponding to each cooling tube, are located at each end of the shell. The thermal radiator tube extends within the shell … more
Date: December 31, 1996
Creator: Ashcroft, J.; Campbell, B. & Depoy, D.
Partner: UNT Libraries Government Documents Department
open access

Double opposite-end tubesheet design for a thermovoltaic energy converter

Description: A method and apparatus are disclosed for the direct conversion of energy by thermovoltaic energy conversion having first and second tubesheets, at least one photon emitter plate secured to and extending from the first tubesheet, at least one cold plate secured to and extending from the second tubesheet, a plurality of thermovoltaic cells disposed along oppositely disposed exterior surfaces of the cold plate, and means cooperating with the tubesheet for maintaining a vacuum between the photon em… more
Date: December 1, 1997
Creator: Ashcroft, John M.; Campbell, Brain C. & DePoy, David M.
Partner: UNT Libraries Government Documents Department
open access

Direct detection of x-rays for protein crystallography

Description: An apparatus and method for directly determining the crystalline structure of a protein crystal. The crystal is irradiated by a finely collimated x-ray beam. The interaction o f the x-ray beam with the crystal produces scattered x-rays. These scattered x-rays are detected by means of a large area, thick CCD which is capable of measuring a significant number of scattered x-rays which impact its surface. The CCD is capable of detecting the position of impact of the scattered x-ray on the surface … more
Date: December 1, 1997
Creator: Atac, Muzaffer & McKay, Timothy
Partner: UNT Libraries Government Documents Department
open access

Ballistic impulse gauge

Description: This invention is comprised of a gauge for detecting the impulse generated in sample materials by X-rays or other impulse producing mechanisms which utilizes a pair of flat annular springs to support a plunger relative to a housing which may itself be supported by a pair of flat annular springs in a second housing. The plunger has a mounting plate mounted on one end and at the other, a position or velocity transducer is mounted. The annular springs consist of an outer ring and an inner ring wit… more
Date: December 31, 1992
Creator: Ault, S. K.
Partner: UNT Libraries Government Documents Department
open access

Radar transponder apparatus and signal processing technique

Description: An active, phase-coded, time-grating transponder and a synthetic-aperture radar (SAR) and signal processor means, in combination, allow the recognition and location of the transponder (tag) in the SAR image and allow communication of information messages from the transponder to the SAR. The SAR is an illuminating radar having special processing modifications in an image-formation processor to receive an echo from a remote transponder, after the transponder receives and retransmits the SAR illum… more
Date: December 31, 1994
Creator: Axline, R.M. Jr.; Sloan, G.R. & Spalding, R.E.
Partner: UNT Libraries Government Documents Department
open access

Rod examination gauge

Description: The present invention is directed to a semi-automatic rod examination gauge for performing a large number of exacting measurements on radioactive fuel rods. The rod examination gauge performs various measurements underwater with remote controlled machinery of high reliability. The rod examination gauge includes instruments and a closed circuit television camera for measuring fuel rod length, free hanging bow measurement, diameter measurement, oxide thickness measurement, cladding defect examina… more
Date: December 31, 1991
Creator: Bacvinskas, W. S.; Bayer, J. E.; Davis, W. W.; Fodor, G.; Kikta, T. J.; Matchett, R. L. et al.
Partner: UNT Libraries Government Documents Department
open access

Wedge assembly for electrical transformer component spacing

Description: This invention is comprised of a wedge assembly that is easily inserted between two surface to be supported thereby, and thereafter expanded to produce a selected spacing between those surfaces. This wedge assembly has two outer members that are substantially identical except that they are mirror images of each other. Oppositely directed faces of these of these outer members are substantially parallel for the purpose of contacting the surfaces to be separated. The other faces of these outer mem… more
Date: December 31, 1990
Creator: Baggett, F. E. & Cage, W. F.
Partner: UNT Libraries Government Documents Department
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