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MHD air heater development technology. Report for the period October 1978-December 1978

Description: During the period covered by this report, work was done on all three tasks and is summarized as follows: Under Task 1 (design studies) the influence of heater system layout, duct dimensions, and heater sequencing on flow distribution was studied further. One result was that localizing the bulk of the pressure drop in the heaters tends to minimize heater-to-heater flow differences. The task of integrating the temperature and pressure solvers was pursued further. An analysis of current flow back … more
Date: April 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electron Energy-Loss Spectroscopy: Fundamentals and applications in the characterization of minerals

Description: The combined use of an energy-loss spectrometer and an analytical electron microscope with fine probe forming capabilities provides a wealth of information about the sample at high spatial resolution. Fundamental principles governing the physics of the interaction between the fast electron and a thin foil sample, to account for the fine structure in the inelastically scattered fast electron distribution (Electron-Energy Loss Spectroscopy, EELS), will be reviewed. General application of EELS is … more
Date: April 1, 1989
Creator: Krishnan, K.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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First-order model for durability of Hanford waste glasses as a function of composition

Description: Two standard chemical durability tests, the static leach test MCC-1 and product consistency test PCT, were conducted on simulated borosilicate glasses that encompass the expected range of compositions to be produced in the Hanford Waste Vitrification Plant (HWVP). A first-order empirical model was fitted to the data from each test method. The results indicate that glass durability is increased by addition of Al{sub 2}O{sub 3}, moderately increased by addition of ZrO{sub 2} and SiO{sub 2}, and d… more
Date: April 1, 1992
Creator: Hrma, P.; Piepel, G. F.; Schweiger, M. J. & Smith, D. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Electrorefining cell evaluation

Description: Operational characteristics of the LANL electrorefining cell, a modified LANL electrorefining cell, and an advanced electrorefining cell (known as the CRAC cell) were determined. Average process yields achieved were: 75% for the LANL cell, 82% for the modified LANL cell, and 86% for the CRAC cell. All product metal from the LANL and modified LANL cells was within foundry specifications. Metal from one run in the CRAC cell exceeded foundry specifications for tantalum. The LANL and modified LANL … more
Date: April 14, 1989
Creator: Bronson, M. C. & Thomas, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Use of extractive distillation to produce concentrated nitric acid

Description: Concentrated nitric acid (> 95 wt %) is needed for the treatment of off-gases from a fuels-reprocessing plant. The production of concentrated nitric acid by means of extractive distillation in the two-pot apparatus was studied to determine the steady-state behavior of the system. Four parameters, EDP volume (V/sub EDP/) and temperature (T/sub EDP/), acid feed rate, and solvent recycle, were independently varied. The major response factors were percent recovery (CPRR) and product purity (CCP). S… more
Date: April 1, 1981
Creator: Campbell, P.C.; Griffin, T.P. & Irwin, C.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of alternate fuels. Report No. 5. Analysis of fused cast AZS refractory, silica refractory, and high-MgO refractory degraded by residual oil combustion products

Description: The objective of this study is to better understand the subject refractory degradation process and to provide viable means to retard the deterioration. We analyzed fused cast AZS tuckstone brick, silica crown skew brick, and high-MgO checker brick used for only six months in a glass melting furnace fired with a residual oil that contained 175 ppM V and 2 to 3% S as major impurities. During the furnace campaign, the maximum hot face temperatures of the AZS refractory, the silica refractory, and … more
Date: April 1, 1978
Creator: Wei, G. C. & Tennery, V. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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DT fusion neutron irradiation of ORNL magnesium oxide crystals and BNL--LASL superconductor wires

Description: The DT fusion neutron irradiation of two ORNL magnesium oxide crystals and eleven BNL-LASL superconductor wires is described. The sample position and neutron dose record are given. The maximum neutron fluence on any sample was 2.16 x 10/sup 16/ neutrons/cm/sup 2/.
Date: April 26, 1978
Creator: MacLean, S.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Syntheses and electronic structures of decamethylmetallocenes

Description: The synthesis of decamethylmanganocene ((eta-C/sub 5/(CH/sub 3/)/sub 5/)/sub 2/Mn or (Me/sub 5/Cp)/sub 2/Mn)) is described. Magnetic susceptibility and electron paramagnetic resonance (EPR) studies show that (Me/sub 5/Cp)/sub 2/Mn is a low-spin, 17-electron compound with an orbitally degenerate, /sup 2/E/sub 2g/ (e/sub 2g//sup 3/ a/sub 1g//sup 2/) ground state. An x-ray crystallographic study of (Me/sub 5/Cp)/sub 2/Mn shows that it is a monomeric, D/sub 5d/ decamethylmetallocene with metal to r… more
Date: April 1, 1981
Creator: Robbins, J.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of composition and temperature on viscosity and electrical conductivity of borosilicate glasses for Hanford nuclear waste immobilization

Description: Viscosity and electrical conductivity of 79 simulated borosilicate glasses in the expected range of compositions to be produced in the Hanford Waste Vitrification Plant were measured within the temperature span from 950 to 1250[degree]C. The nine major oxide components were SiO[sub 2], B[sub 2]O[sub 3], Li[sub 2]O, Na[sub 2]O, CaO, MgO, Fe[sub 2]O[sub 3], Al[sub 2]O[sub 3], and ZrO[sub 2]. The test compositions were generated statistically. The data were fitted by Fulcher and Arrhenius equation… more
Date: April 1, 1993
Creator: Hrma, P.; Piepel, G. F.; Smith, D. E.; Redgate, P. E. & Schweiger, M. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Optimum catalytic process for alcohol fuels from syngas

Description: The objectives of this contract are to discover and evaluate the catalytic properties of novel homogeneous, heterogeneous, or combination catalytic systems for the production of alcohol fuel extenders from syngas, to evaluate analytically and on the bench scale novel reactor concepts for use in converting syngas to liquid fuel products, and to develop on the bench scale the best combination of chemistry, reactor, and total process configuration to achieve the minimum product cost for conversion… more
Date: April 28, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Conversion of light hydrocarbon gases to metal carbides for production of liquid fuels and chemicals

Description: Work on this project will be performed according to two tasks: Task 1, Industrial Chemistry and Applied Kinetics of Light Hydrocarbon Gas Conversion to Metal Carbides H[sub 2] and CO. We are building a laboratory-scale electric are discharge reactor, in which to assess the technical feasibility of producing Mg[sub 2]C[sub 3], H[sub 2], and CO from methane and MgO. We will also do experimental runs with CaO as well as mixtures of CaO and MgO and measure conversions of methane, CaO and/or MgO, an… more
Date: April 1, 1993
Creator: Diaz, A.F.; Modestino, A.J.; Howard, J.B. & Peters, W.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Control of coal combustion SO{sub 2}and NO{sub x} emissions by in- boiler injection of CMA. Second quarterly project status report, 1 January 1993--31 March 1993

Description: The principal objectives of the proposed research are two-fold: (A) To understand the mechanism and assess the effectiveness of sulfur capture by the chemical calcium magnesium acetate (CMA); and (B) To evaluate the NO{sub x}, reduction capabilities of CMA by burning the organic constituents of the chemical (the acetate) and reducing NO to stable N{sub 2}. The optimum conditions and the location of CMA introduction in the furnace will be identified. To achieve these goals water solutions of CMA… more
Date: April 1, 1993
Creator: Levendis, Y. A. & Wise, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Boron-filled elastomers (SANL 252-056). [Vinyl copolymer; Viton A fluoroelastomer; physical characteristics]

Description: A series of boron-filled vinyl copolymer elastomer (VCE) and Viton A fluoroelastomer formulations was prepared and the physical characteristics of the cured formulations determined. Their weight loss on heating to 300/sup 0/C, as determined by two different analytical methods, did not agree. The presence of up to 0.23 percent boric acid in the boron powders used to fill a standard boron-filled VCE elastomer did not appear to affect the physical characteristics of the cured formulation. 7 tables… more
Date: April 20, 1976
Creator: Schneider, R. E. & Hartzel, L. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of calcium magnesium acetate on the combustion of coal-water slurries. Fourteenth quarterly project status report, 1 December 1992--28 February 1993

Description: The general objective of the project is to investigate the combustion behavior of single and multiple Coal-Water Fuel (CWF) particles burning at high temperature environments. Both uncatalyzed as well as catalyzed CWF drops with Calcium Magnesium Acetate (CMA) catalyst will be studied. Emphasis will also be given in the effects of CMA on the sulfur capture during combustion. Over this period work concentrated in producing CWF agglomerates from pulverized-grain coal ({approx} 40{mu}m) and studyi… more
Date: April 1, 1993
Creator: Levendis, Y. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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DEVELOPMENT AND PRODUCTION OF URANIUM 10 wt.% MOLYBDENUM AS-CAST SLUGS FOR HNPF PHYSICS EXPERIMENT

Description: A multiple casting process was developed for the production of 0.590 plus or minus 0.005-in. diam. by 12-in. long solid right cylinders. The process involves vacuum induction melting in MgZrO/sub 3/ coated graphite crucibles and casting into coated graphite molds. Thirty-eight hundred fifty 90 wt.% U of 1.5 wt.% enrichment-10 wt.% Mo as-cast pins were produced for HNPF Exponential Experiments. (auth)
Date: April 1, 1960
Creator: Stanley, J.A. & Binstock, M.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Surveillance of Site A and Plot M report for 1989

Description: The results of the environmental monitoring program conducted at Site A/Plot M in the Palos Park Forest Preserve area for CY 1989 are presented. The monitoring program is the ongoing remedial action that resulted from the 1976--1978 radiological characterization of the site. That study had determined that very low levels of hydrogen-3 migrated from the burial ground and was present in two nearby hand-pumped picnic wells. The current program consists of sample collection and analysis of air, sur… more
Date: April 1, 1990
Creator: Golchert, N.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Control of coal combustion SO[sub 2]and NO[sub x] emissions by in- boiler injection of CMA

Description: The principal objectives of the proposed research are two-fold: (A) To understand the mechanism and assess the effectiveness of sulfur capture by the chemical calcium magnesium acetate (CMA); and (B) To evaluate the NO[sub x], reduction capabilities of CMA by burning the organic constituents of the chemical (the acetate) and reducing NO to stable N[sub 2]. The optimum conditions and the location of CMA introduction in the furnace will be identified. To achieve these goals water solutions of CMA… more
Date: April 1, 1993
Creator: Levendis, Y.A. & Wise, D.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The MAGSORB process for bulk separation of carbon dioxide

Description: The experimental work performed in this program has revealed the impact of formulation procedure on MAGSORB properties, and has shown that the sorbent has adequate potential as a CO{sub 2} sorbent for synthesis gas production. MAGSORB is a highly selective CO{sub 2} sorbent that does not react with other synthesis gas components (H{sub 2}, CO, H{sub 2}O, H{sub 2}S, or NH{sub 3}), nor is its performance adversely affected by these components. A technoeconomic analysis has shown that the integrat… more
Date: April 1, 1992
Creator: Knight, R. A.; Carty, R. H. (Institute of Gas Technology, Chicago, IL (United States)); Duthie, R. G. & Pechtl, P. A. (Bechtel Group, Inc., San Francisco, CA (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Lot No. 2 of Frit 202 for DWPF cold runs. [Waste Processing Facility]

Description: In the DWPF (Defense Waste Processing Facility), glass forming chemicals will be added to the waste in the form of premelted glass frit. On an oxide weight basis, DWPF glass will consist of approximately 64 wt% glass frit, 8 wt% precipitate hydrolysis aqueous product, and 28 wt% sludge. The glass frit and the precipitate hydrolysis aqueous product together make up what is called the glass-former composition. Current plants are to control the composition of the frit through the procurement speci… more
Date: April 5, 1993
Creator: Schumacher, R. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Preparation of the Hydrides of Magnesium and Beryllium

Description: This technical report summarizes the work which has been done to date on the preparation of magnesium hydride and the attempted preparation of beryllium hydride. Although pure beryllium hydride has not yet been made, the work is continuing, and this report indicates which phases are thought to be worth further work.
Date: April 1, 1954
Creator: Holley, Charles E., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Multi-band Bloch equations and gain spectra of highly excited II-VI semiconductor quantum wells

Description: Quasi-equilibrium excitation dependent optical probe spectra of II-VI semiconductor quantum wells at room temperature are investigated within the framework of multi-band semiconductor Bloch equations. The calculations include correlation effects beyond the Hartree-Fock level which describe dephasing, interband Coulomb correlations and band-gap renormalization in second Born approximation. In addition to the carrier-Coulomb interaction, the influence of carrier-phonon scattering and inhomogeneou… more
Date: April 21, 1997
Creator: Girndt, A.; Jahnke, F.; Knorr, A.; Koch, S.W. & Chow, W.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Control of coal combustion SO{sub 2} and NO{sub x} emissions by in-boiler injection of CMA. Final project report, July 1, 1992--December 31, 1994

Description: A study was conducted to determine the efficacy of carboxylic calcium and magnesium salts (e.g., calcium magnesium acetate or CMA, CaMg{sub 2}(CH{sub 2}COOH){sub 6}) for the simultaneous removal of SO{sub 2} and NO{sub x} in oxygen-lean atmospheres. Experiments were performed in a high-temperature furnace that simulated the post-flame environment of a coal-fired boiler by providing similar temperatures and partial pressures of SO{sub 2}, NO{sub x} CO{sub 2} and O{sub 2}. When injected into a ho… more
Date: April 1, 1995
Creator: Levendis, Y.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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