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Tritium monitor and collection system

Description: This system measures tritium on-line and collects tritium from a flowing inert gas stream. It separates the tritium from other non-hydrogen isotope contaminating gases, whether radioactive or not. The collecting portion of the system is constructed of various zirconium alloys called getters. These alloys adsorb tritium in any of its forms at one temperature and at a higher temperature release it as a gas. The system consists of four on-line getters and heaters, two ion chamber detectors, two co… more
Date: March 26, 1991
Creator: Baker, J. D.; Wickham, K. L.; Ely, W. E.; Tuggle, D. G.; Meikrantz, D. H.; Grafwaller, E. G. et al.
Partner: UNT Libraries Government Documents Department
open access

Water and UV degradable lactic acid polymers

Description: A water and UV light degradable copolymer of monomers of lactic acid and a modifying monomer selected from the class consisting of ethylene and polyethylane glycols (PVB 6/22/90), propylene and and polypropylene (PVB 6/22/90) glycols, P-dioxanone, 1, 5 dioxepan-2-one, 1,4 -oxathialan-2-one, 1,4-dioxide and mixtures thereof. These copolymers are useful for waste disposal and agricultural purposes. Also disclosed is a water degradable blend of polylactic acid or modified polylactic acid and high … more
Date: June 26, 1990
Creator: Bonsignore, P. V. & Coleman, R. D.
Partner: UNT Libraries Government Documents Department
open access

Planar fuel cell utilizing nail current collectors for increased active surface area

Description: A plurality of nail current collector members are useful in the gas flow passages of an electrochemical device to optimize the active surfaces of the device and to provide structural support. In addition, the thicknesses of cathode and anode layers within the electrochemical device are varied according to current flow through the device to reduce resistance and increase operating efficiency.
Date: November 26, 1999
Creator: George, Thomas J. & Meacham, G.B. Kirby
Partner: UNT Libraries Government Documents Department
open access

Method for Non-Intrusively Identifying a Contained Material Utilizing Uncollided Nuclear Transmission Measurements

Description: An improved nuclear diagnostic method identifies a contained target material by measuring on-axis, mono-energetic uncollided particle radiation transmitted through a target material for two penetrating radiation beam energies, and applying specially developed algorithms to estimate a ratio of macroscopic neutron cross-sections for the uncollided particle radiation at the two energies, where the penetrating radiation is a neutron beam, or a ratio of linear attenuation coefficients for the uncoll… more
Date: February 26, 1999
Creator: Morrison, John L.; Stephens, Alan G. & S., Grover Blaine
Partner: UNT Libraries Government Documents Department
open access

Method of Dehalogenation using Diamonds

Description: A method for preparing olefins and halogenated olefins is provided comprising contacting halogenated compounds with diamonds for a sufficient time and at a sufficient temperature to convert the halogenated compounds to olefins and halogenated olefins via elimination reactions.
Date: February 26, 1999
Creator: Farcasiu, Malvina; Kaufman, Phillip B.; Ladner, Edward P. & Anderson, Richard R.
Partner: UNT Libraries Government Documents Department
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