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Fabrication of a Kevlar liner assembly

Description: Several liner assemblies were fabricated with Kevlar 49 and epoxy using various wet layup and prepreg processes. A production process, using prepreg material, was developed for fabricating the liner and a wet layup molding process was used to fabricate the Kevlar hat-shaped tunnels. Fabrication of the tunnels using Kevlar prepreg with an autoclave curving process was evaluated.
Date: July 1, 1980
Creator: Schloman, A.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Magnetic resonance studies of photo-induced electron transfer reactions

Description: Fourier Transform Electron Paramagnetic Resonance (FT EPR) is useful in study of photochemical reactions: a microwave pulse rotates the electron spin magnetization vector from z (magnetic field) into xy plane ([pi]/2 pulse); the time evolution of magnetization in xy plane, the free induction decay (FID), is sampled. Fourier transform of FID gives the frequency domain EPR spectrum of the free radicals, and the method is ideal for time-resolved studies of free radicals produced by pulsed-laser ex… more
Date: November 1, 1992
Creator: van Willigen, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Coal Liquefaction Process Streams Characterization and Evaluation: The Use of Selective Chemical Reactions and Carbon NMR Spectroscopy in the Speciation and Quantification of Oxygen Functional Groups in Coal Resids

Description: This study demonstrated the feasibility of using phase-transfer methylation reactions for the derivatization of hydroxyl functionalities and single-electron transfer reactions to cleave ether groups in distillation resid materials derived from direct coal liquefaction. [sup 13]C-NMR was used to analyze the reaction products. It was demonstrated that the techniques can be used to speciate and quantify about half of the oxygen in resids. The remaining half of the oxygen is presumed to be present … more
Date: November 1, 1992
Creator: Stock, L. M. & Cheng, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High octane ethers from synthesis gas-derived alcohols

Description: The objective of the proposed research is to synthesize high octane ethers, primarily methyl isobutyl ether (MIBE) and methyl tertiary butyl ether (MTBE), directly from H[sub 2]/CO/CO[sub 2] coal-derived synthesis gas via alcohol mixtures that are rich in methanol and 2-methyl-l-propanol (isobutanol). The overall scheme involves gasification of coal, purification and shifting of the synthesis gas, higher alcohol synthesis, and direct synthesis of ethers. The last stage of the synthesis involves… more
Date: July 1, 1992
Creator: Klier, Kamil; Herman, Richard G.; Feeley, Owen C. & Johansson, Marie A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nuclear Medicine Technology Progress Report for Quarter Ending June 30, 1980

Description: Results of experiments demonstrated that the alkyl portion of 9-telluraheptadecanoic acid (9-THDA) is retained in the myocardial tissue of rats to the same extent as radioactivity from /sup 123m/Te-9-THDA. Tissue distribution experiments in rats one hr after injection of 10-(/sup 14/C)-9-telluraheptadecanoic acid were compared with the results of a parallel study using /sup 123m/Te-9-THDA. The results indicate that the alkyl region of 9-THDA is retained in the myocardium and that labeling of th… more
Date: January 1, 1981
Creator: Knapp, Furn F., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Debonding of epoxy from glass in irradiated laminates

Description: Glass-fabric-filled epoxies irradiated at 4.7 K and examined at room temperature by 20x stereomicroscopy showed an internal flaw structure which increasingly filled the sample as the ..gamma..-dose was increased. These flaws were determined to be areas where the plastic had debonded from the glass fibers. The extent of this process correlated well with the dose-dependent loss of mechanical strength. Evidence is reported for a similar mechanism in polyimides although visible flaws have not yet b… more
Date: October 18, 1982
Creator: Klabunde, C.E. & Coltman, R.R. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Transuranic organometallics: The next generation

Description: Neptunium and plutonium metal react cleanly with 3/2 equiv. I{sub 2} in aprotic ligating solvents, L, such as tetrahydrofuran (THF), pyridine (Py), and dimethylsulfoxide (DMSO) to give the triiodide complexes as tetrasolvates, AnI{sub 3}(L){sub 4} (An = Np, L = THF (1)); An = Pu, L = THF (2a), Py (2b), and DMSO (2c). These triiodide complexes are convenient precursors to new transuranic compounds. Reaction of the triiodide complexes 1 and 2a hexane with 3 equiv. of sodium bis(trimethylsilyl)ami… more
Date: January 1, 1990
Creator: Zwick, Bill D.; Sattelberger, Alfred P. & Avens, Larry R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Chemical Biodynamics Division. Annual report 1979

Description: The Chemical Biodynamics Division of LBL continues to conduct basic research on the dynamics of living cells and on the interaction of radiant energy with organic matter. Many aspects of this basic research are related to problems of environmental and health effects of fossil fuel combustion, solar energy conversion and chemical/ viral carcinogenesis.
Date: August 1, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cavity-enhanced spontaneous emission rates for rhodamine 6-G in levitated microdroplets

Description: Fluorescence decay kinetics of Rhodamine 6-G molecules in levitated glycerol microdroplets (4--20 microns in diameter) have been investigated to determine the effects of spherical cavity resonances on spontaneous emission rates. For droplet diameters greater than 10 microns, the fluorescence lifetime is essentially the same as in bulk glycerol. As the droplet diameter is decreased below 10 microns, bi-exponential decay behavior is observed with a slow component whose rate is similar to bulk gly… more
Date: January 1, 1992
Creator: Barnes, M.D.; Whitten, W.B.; Ramsey, J.M. (Oak Ridge National Lab., TN (United States)) & Arnold, S. (Polytechnic Inst., of New York, Brooklyn, NY Microparticle Photophysics Lab. (United States))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Thermodynamic properties for polycyclic systems by non-calorimetric methods

Description: A detailed vibrational spectroscopic study of furan, pyrrole, and thiophene has been completed. These compounds form part of the base of five-membered ring systems on which the rest of the research program will be built Several methyl-substituted derivatives were also studied. The results will be used to confirm the model for alkyl- substitution in the ring systems. Gas-phase spectra and fundamental- frequency assignments were completed for 2,3- and 2,5-dihydrofuran. Those compounds initiate wo… more
Date: March 1, 1993
Creator: Steele, W. V.; Chirico, R. D. & Klots, T. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Catalysis and co-catalysis of bond cleavages in coal and coal analogs

Description: The catalytic efficiency of 2-pyridone and 4-pyridone (tautomers of 2-hydroxy and 4-hydroxypyridine) for transfer hydrogenolysis of dinaphthyl ether in tetralin at 450 C was investigated. The effectiveness of 2-pyridone dropped when the reaction time was increased, suggesting that the catalyst is destroyed. Reaction of a compound with bromine in CCl[sub 4] yielded a rearrangement product with a minor amount of the cyclization product; in acetonitrile, only the rearrangement product is obtained.
Date: January 1, 1992
Creator: Miller, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Environmental effects on electron transfer from chlorophyll triplet to quinone: role of dielectric constant, viscosity and quinone structure in cellulose acetate films

Description: The effects of environmental parameters on chlorophyll triplet quenching and electron transfer to quinones have been investigated in a system consisting of donor and acceptor incorporated into a cellulose acetate film which was subsequently exposed to solvent. Triplet quenching by a diffusional mechanism was found to occur in the dry film, with steric effects being a major determinant of quencher effectiveness. No formation of separated radicals was found under these conditions, probably becaus… more
Date: January 1, 1981
Creator: Cheddar, G. & Tollin, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Shemya Air Force Base, Alaska No Further Action Decision document for Hg-1

Description: This document is being prepared to document that a No Further Action Decision (NFAD) document is appropriate for the Hg-1 site at Shemya Air Force Base (AFB), Alaska, under the Air Force Installation Restoration Program (IRP). The IRP is a Department of Defense (DOD) program established to identify and remediate hazardous waste problems on DOD property that result from past practices. The Alaska Department of Environmental Conservation (ADEC) draft document [open quotes]No Further Action Criter… more
Date: March 5, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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GKI chloride in water, analysis method. GKI boron in water, analysis method

Description: Procedures for the chemical analysis of chlorides and boron in water are presented. Chlorides can be titrated with mercuric nitrate to form mercuric chloride. At pH 2.3 to 2.8, diphenylcarbazone indicates the end point of this titration by formation of a purple complex with mercury ions. When a sample of water containing boron is acidified and evaporated in the presence of curcumin, a red colored product called rosocyanine is formed. This is dissolved and can be measured photometrically or visu… more
Date: May 1, 1979
Creator: Morriss, L.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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NMR studies of molecules in liquid crystals and graphite

Description: NMR experiments to measure proton dipole couplings were performed on a series of n-alkanes (n-hexane through n-decane) dissolved in nematic liquid crystals. Computer modeling of the experimental NMR-spectra was done using several different models for intermolecular interactions in these systems. The model of Photinos et al. was found to be best in describing the intermolecular interactions in these systems and can provide a statistical picture of the conformation and orientation of the alkane m… more
Date: June 1, 1992
Creator: Rosen, M. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Analysis of thermally-stable electron transport factors from the hyperthermophilic archaebacterium Pyrodictium brockii

Description: The mechanisms by which hyperthermophilic archaebacteria grow and carry out metabolic functions at elevated temperatures have yet to be determined. The objective of this work is to develop an understanding of the metabolic characteristics of, and the electron transport enzymes involved in, hydrogen/sulfur transformation by hyperthermophilic archaebacteria. Efforts focus on the autotrophic H{sub 2}-oxidizing bacterium, Pyrodictium brockii which has an optimum growth temperature of 105{degrees}C.… more
Date: September 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Syntheses and reactions of polymer-bound molybdenum complexes and hydrogenolyses of an alkynyl cobalt carbonyl cluster. [Co/sub 3/(CO)/sub 9/CCH/sub 2/CCH/sub 2/C(CH/sub 3/)/sub 3/; cyclopentadienyl-(tricarbonyl) hydridomolybdenum]

Description: Co/sub 3/(CO)/sub 9/CCH/sub 2/C(CH/sub 3/)/sub 3/ reacted with hydrogen in aromatic solvents to yield 3,3-dimethylbutene, 2,2-dimethylbutane, and 4,4-dimethylpentanal. First order decomposition of starting material and a hydrogen pressure dependence for the rate of appearance of total products were indicated. The hydrogenation was inhibited in the presence of carbon monoxide (CO:H/sub 2/, 3.7:3.7 atm, 60/sup 0/C), but at 85/sup 0/ under the same CO/H/sub 2/ atmosphere, aldehyde production becam… more
Date: August 1, 1980
Creator: Frommer, J.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation, design, development, and delivery of a 1200-kV prototype termination. Eighth technical progress report, September 1-November 30, 1980

Description: Tests are continuing on the shatter-resistant weathercase models and small samples. Extensive studies of composite materials has resulted in characterization of the epoxy weathercase materials mechanical properties over a wide range of temperatures and lifetime. Progress is reported on the design of the full scale prototype termination.
Date: February 20, 1981
Creator: Billings, J S; Meyer, J R & Kolano, F J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Composite flywheel development completion report, October 1, 1976--September 30, 1977

Description: The UCC-ND Composite Flywheel Development program was initiated at the Oak Ridge Y-12 Plant on May 1, 1976, with the primary objective for the FY 1976--1976T period being the design, fabrication, and testing of a prototype, vehicular-sized, composite flywheel. This initial effort led to the successful testing of the UCC-ND bandwrap flywheel design with a demonstrated energy density performance of 10.1 Wh/lb.
Date: May 1, 1978
Creator: Huddleston, R. L.; Kelly, J. J.; Knight, C. E.; Pollard, R. E. & Post, D. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Design, build, develop and test a fieldworthy spiral tool and packer for casing repair

Description: A new method for sealing casing is under research and development by Nu-Bore Systems. The method involves internally lining a section of the wellbore with a multi-layer spiral wrapping of a high strength, corrosion resistant metal interleaved with a high bond strength, resilient epoxy. The high strength metal is preferably a copper based alloy hardened to a very high strength in order to resist the internal and external pressures of downhole environments. The epoxy adhesive formulation is one t… more
Date: January 1, 1993
Creator: Koster, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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PQQ: Biosynthetic studies in Methylobacterium AM1 and Hyphomicrobium X using specific TC labeling and NMR. [Pyrroloquinoline quinones]

Description: Using TC labeling and NMR spectroscopy we have determined biosynthetic precursors of pyrroloquinoline quinone (PQQ) in two closely related serine-type methylotrophs, Methylobacterium AM1 and Hyphomicrobium X. Analysis of the TC-labeling data revealed that PQQ is constructed from two amino acids: the portion containing N-6, C-7,8,9 and the two carboxylic acid groups, C-7' and 9', is derived-intact-from glutamate. The remaining portion is derived from tyrosine; the phenol side chain provides the … more
Date: January 1, 1988
Creator: Houck, D.R.; Hanners, J.L.; Unkefer, C.J.; van Kleef, M.A.G. & Duine, J.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Results of chemical, toxicological, and bioaccumulation evaluations of dioxins, furans, and guaicol/organic acids in sediments from the Grays Harbor/Chehalis River area

Description: The Battelle/Marine Sciences Laboratory (MSL) was requested by the US Army Corps of Engineers (USACE), Seattle District, to assist in planning and conducting sampling, toxicological tests, and chemistry evaluations on sediment samples collected from the Chehalis River in Grays Harbor, Washington. The objectives of the study were to investigate the toxicity and biological effects of sediments that might potentially contain dioxins, furans, and organic acids, as a result of industrial practices i… more
Date: September 1, 1990
Creator: Word, J.Q.; Ward, J.A. & Squires, A.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Synthetic fuel combustion: pollutant formation. Soot initiation mechanisms in burning aromatics. Second quarterly report, 1 January 1981-31 March 1981

Description: This is the second Quarterly Technical Report in a research program to study soot formation in the combustion of aromatic hydrocarbons. Experiments will be carried out in a shock tube at 1300 to 2500/sup 0/K, using a variety of optical diagnostics to study the kinetic behavior of reactants, radical intermediates, and products. The data will be interpreted using a computer model of the kinetics and dynamics of the reacting system. In this report, the performance of the vacuum and data collection… more
Date: April 1, 1981
Creator: Tanzawa, T.; Krech, R. H. & Rawlins, W. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Tubular lap joints for wind turbine applications

Description: A combined analytical/experimental study of the strength of thick- walled, adhesively bonded PMMA-to-aluminum and E-glass/epoxy composite-to-aluminum tubular lap joints under axial load has been conducted. Test results include strength and failure mode data. Moreover, strain gages placed along the length of the outer tubular adherend characterize load transfer from one adherend to the other. The strain gage data indicate that load transfer is nonuniform and that the relatively compliant PMMA ha… more
Date: January 1, 1990
Creator: Reedy, E.D. Jr. & Guess, T.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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