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Thermionic converter with differentially heated cesium-oxygen source and method of operation

Description: A thermionic converter having an emitter, a collector, and a source of cesium vapor is provided, wherein the source of cesium vapor is differentially heated so that said source has a hotter end and a cooler end, with cesium vapor evaporating from said hotter end into the space between the emitter and the collector and with cesium vapor condensing at said cooler end. The condensed cesium vapor migrates through a porous element from the cooler end to the hotter end.
Date: December 1, 1998
Creator: Rasor, N. S.; Riley, D. R.; Murray, C. S. & Geller, C. B.
Partner: UNT Libraries Government Documents Department
open access

A unique method of neutron flux determination from experimental data

Description: A method is provided for determining the fission heat flux of a prime specimen inserted into a specimen of a test reactor. A pair of thermocouple test specimens are positioned at the same level in the holder and a determination is made of various experimental data including the temperature of the thermocouple test specimens, the temperature of bulk water channels located in the test holder, the gamma scan count ratios for the thermocouple test specimens and the prime specimen, and the thickness… more
Date: December 1, 1998
Creator: Paxton, Frank A.
Partner: UNT Libraries Government Documents Department
open access

Nanodisperse transition metal electrodes (NTME) for electrochemical cells

Description: Disclosed are transition metal electrodes for electrochemical cells using gel-state and solid-state polymers. The electrodes are suitable for use in primary and secondary cells. The electrodes (either negative electrode or positive electrode) are characterized by uniform dispersion of the transition metal at the nanoscale in the polymer. The transition metal moiety is structurally amorphous, so no capacity fade should occur due to lattice expansion/contraction mechanisms. The small grain size, … more
Date: December 1, 1998
Creator: Striebel, Kathryn A. & Wen, Shi-Jie
Partner: UNT Libraries Government Documents Department
open access

Process for strengthening aluminum based ceramics and material

Description: A process for strengthening aluminum based ceramics is provided. A gaseous atmosphere consisting essentially of silicon monoxide gas is formed by exposing a source of silicon to an atmosphere consisting essentially of hydrogen and a sufficient amount of water vapor. The aluminum based ceramic is exposed to the gaseous silicon monoxide atmosphere for a period of time and at a temperature sufficient to produce a continuous, stable silicon-containing film on the surface of the aluminum based ceram… more
Date: December 1, 1998
Creator: Moorhead, Arthur J. & Kim, Hyoun-Ee
Partner: UNT Libraries Government Documents Department
open access

Oxide strengthened molybdenum-rhenium alloy

Description: Provided is a method of making an ODS molybdenum-rhenium alloy which includes the steps of: (1) forming a slurry containing molybdenum oxide and a metal salt dispersed in an aqueous medium, the metal salt being selected from nitrates or acetates of lanthanum, cerium or thorium; (2) heating the slurry in the presence of hydrogen to form a molybdenum powder comprising molybdenum and an oxide of the metal salt; (3) mixing rhenium powder with the molybdenum powder to form a molybdenum-rhenium powde… more
Date: December 1, 1998
Creator: Bianco, Robert & Buckman, William R. Jr.
Partner: UNT Libraries Government Documents Department
open access

Fatty acyl-CoA reductase

Description: The present invention relates to bacterial enzymes, in particular to an acyl-CoA reductase and a gene encoding an acyl-CoA reductase, the amino acid and nucleic acid sequences corresponding to the reductase polypeptide and gene, respectively, and to methods of obtaining such enzymes, amino acid sequences and nucleic acid sequences. The invention also relates to the use of such sequences to provide transgenic host cells capable of producing fatty alcohols and fatty aldehydes.
Date: December 1, 1998
Creator: Reiser, Steven E. & Somerville, Chris R.
Partner: UNT Libraries Government Documents Department
open access

Self-seeded injection-locked FEL amplifier

Description: A self-seeded free electron laser (FEL) provides a high gain and extraction efficiency for the emitted light. An accelerator outputs a beam of electron pulses to a permanent magnet wiggler having an input end for receiving the electron pulses and an output end for outputting light and the electron pulses. An optical feedback loop collects low power light in a small signal gain regime at the output end of said wiggler and returns the low power light to the input end of the wiggler while outputti… more
Date: December 1, 1998
Creator: Sheffield, Richard L.
Partner: UNT Libraries Government Documents Department
open access

Solar reduction of CO{sub 2}

Description: The red shift of the absorption spectrum of CO{sub 2} with increasing temperature, along with CO stabilization are the foundation of a process for direct solar reduction of CO{sub 2} to liquid fuels. The result is a process capable of using renewable solar energy to directly reduce CO{sub 2} from the atmosphere or stationary sources for recycle as a liquid fuel resulting in a net decrease in CO{sub 2} in the atmosphere and decreased demand on fossil fuel. The process includes in sequence: prepa… more
Date: December 1, 1998
Creator: Jensen, Reed J.; Lyman, John L.; King, Joe D. & Guettler, Robert D.
Partner: UNT Libraries Government Documents Department
open access

Drum bubbler tritium processing system

Description: A method is described for separating tritium oxide from a gas stream containing tritium oxide. The gas stream containing tritium oxide is fed into a container of water having a head space above the water. Bubbling the gas stream containing tritium oxide through the container of water and removing gas from the container head space above the water. Thereafter, the gas from the head space is dried to remove water vapor from the gas, and the water vapor is recycled to the container of water.
Date: December 1, 1998
Creator: Rule, Keith; Gettelfinger, Geoff & Kivler, Paul
Partner: UNT Libraries Government Documents Department
open access

Periodic equivalence ratio modulation method and apparatus for controlling combustion instability

Description: The periodic equivalence ratio modulation (PERM) method and apparatus significantly reduces and/or eliminates unstable conditions within a combustion chamber. The method involves modulating the equivalence ratio for the combustion device, such that the combustion device periodically operates outside of an identified unstable oscillation region. The equivalence ratio is modulated between preselected reference points, according to the shape of the oscillation region and operating parameters of th… more
Date: December 1, 1998
Creator: Richards, George A.; Janus, Michael C. & Griffith, Richard A.
Partner: UNT Libraries Government Documents Department
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