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Low temperature alkali metal-sulfur batteries. Final report, December 1, 1974-November 30, 1978

Description: Work on the development of rechargeable, ambient-temperature Li/sulfur and Li/metal sulfide batteries is reported. The Li/S system has the cathode material dissolved in the electrolyte, as Li/sub 2/S/sub n/. Tetrahydrofuran, 1M LiAsF/sub 6/, is one of the more attractive electrolytes discovered for this cell, since it can dissolve up to approx. 10M S as Li/sub 2/Sn. Despite the oxidative nature of the electrolyte, Li is stable in it and can be electrodeposited from it on battery charge. Cells o… more
Date: March 1, 1980
Creator: Brummer, S. B.; Rauh, R. D.; Abraham, K. M.; Dampier, F. W.; Subrahmanyam, V.; Pearson, G. F. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Human exposure to dioxin from combustion sources

Description: Because of their extreme toxicity, much concern and debate has arisen about the nature and extent of human exposure to dioxin. Since municipal solid waste (MSW) incinerators are known to emit polychorinated dibenzo-p-dioxins (PCDDs) and polycholorinated dibenzofurnas (PCDFs) many people who live near MSW incinerators fear that they will be exposed to high levels of dioxin and subsequently develop cancer. What is often overlooked in this debate, however, is the fact that the general population i… more
Date: January 1, 1988
Creator: Hattemer-Frey, Holly A. & Travis, Curtis C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Oxidation of heterocyclic nitrogen yields to nitroheterocycles. [Nitrofurazans]

Description: In the process of finding new routes to synthesize nitrofurazans the investigators compared the oxidation of a sulfilimide and a phosphine imine derived from 3-amino-4-(chlorophenyl)furazan (1). The sulfilimine, 3-(4-chlorophenyl)-4-dimethyl-sulfiliminofurazan (2), was prepared by treating 1 with dimethyl sulfide ditriflate. Oxidation of 1 with peroxytrifluoroacetic acid (ptfa) in dichloromethane gave a mixture that was chromatographed to give 3-(4-chlorophenyl)-4- nitro-furazan (5) in 11% yiel… more
Date: January 1, 1985
Creator: Coburn, Michael D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Oxidation of heterocyclic amines, sulfilimines, and phosphine imines with dimethyldioxirane. [Aminofurazans]

Description: Dimethyldioxirane (DMD) reacted with 3-amino-4-(4-chlorophenyl)furazan (1) to yield 3-(4-chlorophenyl)-4-nitrofurazan (5). DMD reacted with the dimethylsulfilimine of 1 to give the sulfoximine with some 5. Treatment of the trioctylphosphine imine (3) with DMD gave only 5. Other reactions with DMD were studied, including the oxidation of aminofurazans. (DLC)
Date: January 1, 1987
Creator: Coburn, Michael D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Multiaxial failure characterization of composites

Description: The objective of this study was the characterization of three-dimensional failure response of continous fiber composite materials utilized at LLNL. This report discusses the scope of the work, tests, results and the summary of work on the failure characterization of composites. (JDL)
Date: October 1, 1990
Creator: Groves, Scott E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Analysis of medium-BTU gasification condensates, June 1985-June 1986

Description: This report provides the final results of chemical and physical analysis of condensates from biomass gasification systems which are part of the US Department of Energy Biomass Thermochemical Conversion Program. The work described in detail in this report involves extensive analysis of condensates from four medium-BTU gasifiers. The analyses include elemental analysis, ash, moisture, heating value, density, specific chemical analysis, ash, moisture, heating value, density, specific chemical anal… more
Date: May 1, 1987
Creator: Elliott, D. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Novel 7-substituted coumarin compounds and an improved method for their synthesis. [Patent application]

Description: Novel substituted coumarin compounds and an improved method for their synthesis are disclosed. The preferred class of compounds are substituted at the 7-position. The method of synthesis comprises reacting a polyhydroxy benzene or a substituted phenol, with a ..beta..-alkoxy acrylic acid or nitrile, in the presence of a Lewis acid catalyst. By the inclusion of the catalyst in the reaction mixture, the reaction can be carried out under much milder experimental conditions and in increased yields.… more
Date: January 20, 1982
Creator: Bissell, Eugene R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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Research in chemical kinetics: Progress report, January 1, 1978-September 30, 1978

Description: Research was conducted on the following topics: stratospheric chemistry of chlorinated molecules, atmospheric chemistry of methane, atmospheric chemistry of cosmogenic tritium, reactions of energetic and thermal radioactive atoms, methylene chemistry, and laboratory simulation of chemical reactions in Jupiter atmosphere. (DLC)
Date: January 1, 1978
Creator: Rowland, F. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Economic assessment of using nonmetallic materials in the direct utilization of geothermal energy. Final report

Description: The cost effectiveness of nonmetallic materials in three direct-use geothermal applications was assessed. An extensive review of the available literature was conducted in order to ascertain those processes for which sufficient design and cost data had been published to permit this economic assessment to be made. Only three such processes could be found and they are discussed.
Date: February 1, 1979
Creator: Cabibbo, S. V.; Costello, R. M. & Ammerlaan, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Pacific Northwest Laboratory annual report for 1983 to the DOE Office of Energy Research. Part 3. Atmospheric sciences

Description: The goals of atmospheric research at Pacific Northwest Laboratory (PNL) are to assess, describe and predict the nature and fate of atmospheric contaminants and to study the impacts of contaminants on local, regional and global climates. The contaminants being investigated are those resulting from the development and use of conventional energy resources (coal, gas, oil, and nuclear power) as well as alternative energy resources. The description of atmospheric research at PNL is organized in term… more
Date: February 1, 1984
Creator: Elderkin, C. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Solvent-Regenerated Activated Carbon

Description: This report summarizes the results of a University/Industry research project, sponsored by the New York State Energy Research and Development Authority and Fluids Design Corporation. The research project studied the solvent regeneration of activated carbon. Activate carbon was used to remove trace organics from aqueous streams, then regenerated by desorbing the adsorbates with organic solvents. The project included a survey of the potential applications in New York State industries, fundamental… more
Date: July 1, 1988
Creator: McLaughlin, Hugh
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radiation Induced Effects in Organic Systems. Progress Report, December 1, 1979-December 1, 1980

Description: Progress was made in two areas of interest: the nature of the decay kinetics in systems yielding geminate radical pairs upon irradiation, and OH reactions with aromatic hydrocarbons. The work on geminate pairs has focused on the p,p' azoxy phenetole molecule, studied at low temperatures using both polycrystalline and single crystal systems. The result obtained appear to be somewhat different from those for the p,p' azoxy anisole system reported on earlier. Preliminary results on both microwave … more
Date: January 1, 1980
Creator: Johnsen, R H
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Solvent stark effects and spectral shifts. II

Description: Solvent shifts of the energies of the lowest /sup 1/L/sub a/ bands of the electronic absorption spectra of anthracene, chrysene, phenanthrene, and tetracene and of the lowest /sup 1/L/sub b/ bands of the electronic absorption spectra of naphthalene, phenanthrene, chrysene, and picene are reported. The origins of these shifts are analyzed in terms of theories developed by Baur and Nicol and by Abe. Satisfactory fits of the experimental data are obtained for theoretical expressions derived from b… more
Date: unknown
Creator: Nicol, Malcolm; Swain, Julie; Shum, Yin-Yan; Merin, Robert & Chen, Rosa H. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Accurate determination of pair potentials for a C{sub w}H{sub x}N{sub y}O{sub z} system of molecules: A semiempirical method

Description: Statistical mechanical chemical equilibrium calculations of the properties of high-pressure high-temperature reactive C,H,N,O mixtures are made to derive an accurate self-consistent set of inter-molecular potentials for the product molecules. Previous theoretical efforts to predict such properties relied in part on Corresponding States theory and shock wave data of argon. More recent high-pressure Hugoniot measurements on a number of elements and molecules allow more accurate determination of t… more
Date: March 1, 1995
Creator: van Thiel, M.; Ree, F. H. & Haselman, L. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ecological hazards of MTBE exposure: A research agenda

Description: Fuel oxygenates are used in metropolitan areas across the United States in order to reduce the amount of carbon monoxide released into the atmosphere during the winter. The most commonly used fuel oxygenate is Methyl tert-butyl ether (MTBE). Its widespread use has resulted in releases into the environment. To date there has been only minimal effort to investigate ecological impacts caused by exposure to concentrations of MTBE typically found in environmental media. Research into the potential f… more
Date: March 1, 1997
Creator: Carlsen, T.; Hall, L. & Rice, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Factoring the contribution of through-space and through-bond interactions to rates of photoinduced electron transfer in donor- spacer-acceptor molecules using ultrafast transient absorption spectroscopy

Description: Contributions from through-space and through-bond interactions to the electronic coupling matrix elements for photoinduced charge separation and recombination in linked donor-spacer-acceptor molecules were studied. The molecules consisted of a 4-piperidinyl-naphthalene-1,8-dicarboximide electron donor and a N-(n-octyl)pyromellitimide electron acceptor attached to the 1,5- and 1,8-positions of either anthracene or dibenzobicyclo(2.2.2)octatriene spacers.
Date: June 1996
Creator: Gosztola, D.; Wang, Bing & Wasielewski, M. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Synthesis of 6-Methyl-9-n-propyldibenzothiophene-4-ol

Description: The material covered here can be divided into 3 parts: large-scale synthesis of 200+ grams of distilled 1,4-diethyl-2-[(2'- methoxyphenyl)thio]benzene, synthesis of sulfones both as starting materials for chemical cyclization reactions and as solid derivatives for identification purposes, and continued investigation of the cyclization to dibenzothiophenes both by chemical and photochemical means. 5 refs, figs.
Date: April 27, 1991
Creator: Eisenbraun, E.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Synthesis of 6-Methyl-9-propyldibenzothiophene-4-ol

Description: Conversion of 4'-methylpropiophenone to 1-methyl-4-n-propylbenzene was accomplished in high yields. Bromination of the latter resulted in isomers of methyl-n-propyl-1-bromobenzene. Reaction of the isomers with sodium butoxide and 2-methoxybenzenethiol in presence of Pd[P(C[sub 6]H[sub 5])[sub 3]][sub 4] in 1-butanol was studied. The methylpropylbenzene was also iodinated. A decision to use iodination vs bromination will be made when more data are accumulated. 6 refs, figs.
Date: November 20, 1990
Creator: Eisenbraun, E.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Synthesis of 6-Methyl-9-n-propyldibenzothiophene-4-ol

Description: The material covered in this report is divided into two parts: further cyclization experiments on 1,4-diethyl-2-[(2'- methoxyphenyl)thio]benzene and its sulfone both by chemical and photochemical means, and progress toward synthesis of modified target molecule, 9-isopropyl-4-methoxy-6-methyldibenzo-thiophene. 8 refs, figs.
Date: July 25, 1991
Creator: Eisenbraun, E.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ultrasonic detection of fatigue damage in glass-epoxy composites

Description: Energy storage flywheels fabricated of S2 glass-epoxy composite were studied to determine the behavior of the ultrasonic properties as a function of strain history and to identify possible predictors of incipient failure. Tensile specimens of the flywheel material were loaded uniaxially, and the ultrasonic properties (i.e., the shear and longitudinal wave velocities and the attenuation) were measured as a function of strain. Finished flywheels were similarly tested at various stages during cycl… more
Date: January 1, 1990
Creator: Simpson, W. A., Jr. & McClung, R. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Femtosecond dynamics of fundamental reaction processes in liquids: Proton transfer, geminate recombination, isomerization and vibrational relaxation. [Spiropyrans]

Description: The fast excited state intramolecular proton transfer of 3-hydroxyflavone is measured and effects of external hydrogen-bonding interactions on the proton transfer are studied. The proton transfer takes place in [approximately]240 fsec in nonpolar environments, but becomes faster than instrumental resolution of 110 fsec in methanol solution. The dynamics following photodissociation of CH[sub 2]I[sub 2] and other small molecules provide the first direct observations of geminate recombination. The… more
Date: November 1, 1992
Creator: Schwartz, Benjamin Joel
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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