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Study of rock-water-nuclear waste interactions in the Pasco Basin, Washington. Part I. Distribution and composition of secondary and primary mineral phases in basalts of the Pasco Basin, Washington

Description: In Part I of this report the results of Task III are presented and discussed. The subject of Task III is the study and identification of secondary and primary mineral assemblages in basalts of the Pasco Basin of southeastern Washington. In particular, we have determined the relative amounts, crystallization sequence, and compositions of secondary minerals found lining vesicle and fracture surfaces. This information, together with data on the chemical composition of primary minerals and the exte… more
Date: September 1, 1979
Creator: Benson, L. V. & Teague, L. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Low Temperature Thermoluminescence of Gamma Irradiated Potassium Dihydrogen Phosphate

Description: Thermoluminescence in potassium dihydrogen phosphate (KDP) induced by Co/ sup 60/ gamma irradiation at liquid nitrogen temperature (-198 deg C) was investigated. Glow curves in the temperature range --196 to 0 deg C were measured for a series of gamma exposure dosages ranging from 10/sup 4/ roentgen to 5 x 10/sup 6/ roentgen. The heating rate used for glow curve measurements was 12 deg C per minute. Twice recrystallized Mallinckrodt reagent grade potassium dihydrogen phosphate, with a grain siz… more
Date: October 19, 1962
Creator: Sims, T. M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Variations in volatiles in magma bodies based on studies of melt inclusions

Description: Knowledge of volatile concentrations in magmas are important in the prediction of explosive volcanism, and contribute to the understanding of the carbon dioxide budget of the atmosphere. Some important variables that are controlled by volatiles are: crystallization temperature of phases, composition of liquids minimum, and viscosity. Volatiles are also catalysts for reactions.
Date: June 15, 1989
Creator: Vogel, T. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Design, microstructure, and high-temperature behavior of silicon nitride sintered with rate-earth oxides

Description: The processing-microstructure-property relations of silicon nitride ceramics sintered with rare-earth oxide additives have been investigated with the aim of improving their high-temperature behavior. The additions of the oxides of Y, Sm, Gd, Dy, Er, or Yb were compositionally controlled to tailor the intergranular phase. The resulting microstructure consisted of {beta}-Si{sub 3}N{sub 4} grains and a crystalline secondary phase of RE{sub 2}Si{sub 2}O{sub 7}, with a thin residual amorphous phase … more
Date: August 1, 1991
Creator: Ciniculk, M.K. (California Univ., Berkeley, CA (United States). Dept. of Materials Science and Mineral Engineering)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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X-ray scattering studies of non-equilibrium ordering processes

Description: This report summarizes the major results obtained under US DOE Grant Number FG05-90ER45280 from the dates November 1, 1989 through October 31, 1992 inclusive. The principal work includes x-ray scattering studies of phase transition kinetics in binary alloy order-disorder transitions, block co-polymer crystallization, and charge density wave solids under applied electric fields, and studies of magnetic excitations in low dimensional quantum systems.
Date: January 1, 1992
Creator: Nagler, S.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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CsAlSi/sub 5/O/sub 12/: a possible host for /sup 137/Cs immobilization

Description: CsAlSi/sub 5/O/sub 12/ exhibits more acid resistance than pollucite (CsAlSi/sub 2/O/sub 6/). At pH values of 1.02 and 1.40, the extraction of Cs from CsAlSi/sub 5/O/sub 12/ at 25/sup 0/C was approximately proportional to the square root of leach time. The Cs extraction at 25/sup 0/C varied as (H/sup +/)/sup 0/ /sup 36/ over the pH range of 1 to 6. Also, the Cs extraction in various brines at 300/sup 0/C/30 MPa was comparable with that for pollucite. CsAlSi/sub 5/O/sub 12/ can be crystallized at… more
Date: March 31, 1982
Creator: Adl, T. & Vance, E.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Stress and phase transformation phenomena in oxide films

Description: In situ optical methods are reviewed for characterization of phase transformation processes and evaluation of residual stress in solution- deposited metastable oxide films. Such low density films most often are deposited as disordered phases making them prone to crystallization and attendant densification when subjected to increased temperature and/or applied pressure. Inherent stress imparted during film deposition and its evolution during the transformation are evaluated from phonon frequency… more
Date: April 1, 1992
Creator: Exarhos, G.J. & Hess, N.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Effect of processing conditions on the reliability of cross-linked polyethylene cable insulation. First year report

Description: Progress is reported in crystallization and morphology, treed cables, and cable production on the reliability of cross-linked polyethylene cable insulation. Scanning electron microscopy of polished surfaces etched with carbon tetrachloride vapor, differential scanning calorimetry and x-ray diffraction were used for morphological investigations until recently when good results have been obtained using the technique of permanganic acid etching. (FS)
Date: unknown
Creator: Phillips, P.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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EXPERIMENTAL ATTEMPTS TO STABILIZE A CUBIC FORM OF BeO

Description: Binary mixtures of BeO with the oxides Al/sub 2/O/sub 3/, CaO, Li/sub 2/ O, MgO, Sc/sub 2/O/sub 3/, TiO/sub 2/, Y/sub 2/O/sub 3/, and ZrO/sub 2/ were fired to temperatures in excess of 2050 deg C in an attempt to produce a stabilized cubic crystalline modification of BeO. No evidence was observed in microscopic and x-ray diffraction analyses of the cooled specimens that a cubic form of BeO had formed in the experiment. (auth)
Date: December 22, 1961
Creator: Thoma, R.E.; Friedman, H.A. & McVay, T.N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigation of a fossil geothermal system, Hamblin-Cleopatra Volcano, Clark County, Nevada. Final technical report

Description: The Hamblin-Cleopatra volcano, selected for study because erosion and fault displacement have exposed the entire volcanic succession, the intrusive core, a radial dike systems, and sedimentary and volcanic rocks that predate and postdate the volcano, was investigated to estimate the proportions of igneous materials forming lava flows, pyroclastic deposits, intrusive bodies, and reworked debris. Chemical changes in the magma throughout the active period of the volcano were documented. The geothe… more
Date: July 28, 1986
Creator: Barker, D.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The thermodynamic properties of benzothiazole and benzoxazole

Description: This research program, funded by the Department of Energy, Office of Fossil Energy, Advanced Extraction and Process Technology, provides accurate experimental thermochemical and thermophysical properties for key'' organic diheteroatom-containing compounds present in heavy petroleum feedstocks, and applies the experimental information to thermodynamic analyses of key hydrodesulfurization, hydrodenitrogenation, and hydrodeoxygenation reaction networks. Thermodynamic analyses, based on accurate in… more
Date: August 1, 1991
Creator: Steele, W. V.; Chirico, R. D.; Knipmeyer, S. E. & Nguyen, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Secondary minerals found in the cores DC2 A1 and DC2 A2 taken from the Grande Ronde Basalt Formation, Pasco Basin, Washington

Description: The results obtained for Task I are presented and discussed in this report. The subject of Task I is the study and identification of secondary mineral assemblages in two slant cores drilled off core DC2. The data were obtained from scanning electron microscopic (SEM/EDAX), x-ray diffraction (XRD), and thin section petrographic studies. In addition, an attempt was made to determine the lateral continuity of the secondary mineralization and the extent to which the fissures in this potential repos… more
Date: January 1, 1980
Creator: Teague, L.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Thermal history and crystallization characteristics of the DWPF glass waste form

Description: The Defense Waste Processing Facility (DWPF) at the Savannah River Site will immobilize high-level radioactive waste by incorporating it in a stable borosilicate glass waste form suitable for long term storage in a geologic repository. The thermal history of the canistered waste form to be produced in DWPF was determined during filling and subsequent cooldown operations by simulating DWPF production conditions. Samples of simulated waste glass of projected compositions for the DWPF have been ex… more
Date: January 1, 1992
Creator: Marra, S. L.; Edwards, R. E. & Jantzen, Carol M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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POSSIBLE IMPLICATIONS OF THE DAMAGE BY RADIATION IN THE STORAGE OF PROPELLANTS IN OUTER SPACE AND TENTATIVE METHODS FOR ITS MEASUREMENT

Description: The damage by radiation that can be expected during the storage of H/sub 2/-bonded propellants in outer space is analyzed in terms of the available data on radiation levels. On this basis, the alternatives of storing the propellants as liquids or as solids, at low temperature, are discussed, and account is taken of recent results on their thermal behavior. Vitreous aggregation states of compounds that could crystallize spontaneously after long periods of irradiation are shown to present some ha… more
Date: July 1, 1962
Creator: McMillan, J.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Influence of the interface on the crystallization of amorphous Ge in Pb/Ge multilayers

Description: The amorphous to crystalline phase transition of Ge in contact with Pb has been extensively investigated in Pb/Ge multilayers. We find that the Ge crystallizes at reduced temperatures in the range of 100-200/degree/C depending on the thickness of the Ge and the Pb. Simultaneously the texture of the Pb improves and the layered structure completely disappears. The basis for the reduction of the crystallization temperature is the enhanced diffusion kinetics at the interface, caused by the adjacent… more
Date: January 1, 1988
Creator: Sevenhans, W.; Locquet, J.P.; Bruynseraede, Y.; Homma, H. & Schuller, I.K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Fundamental studies of the mechanisms of slag deposit formation: Final report

Description: The kinetics of ash deposition on utility boilers have been studied. A heated tube furnace system was used in the study. Areas of consideration in the deposition mechanics were: close space knowledge of chemical composition and distribution of inorganic constituents in coal, transformations and reactions of the inorganic constituents in the flame, ash transport mechanisms, initial adhesion of ash particles to heat transfer surfaces and subsequently to each other to form a deposit, and further i… more
Date: July 1, 1987
Creator: Austin, L.G.; Benson, S.; Rabinovich, A.; Tangsathitkulchai, M. & H.H., Schobert
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of processng conditions on the reliability of cross-linked polyethylene cable insulation. Progress report

Description: The overall long-term objective of the program remains the determination of the influence of processng on the electrical properties of cross-linked polyethylenes through its effect on morphological variables. Although aimed at an understanding of failure processes in heavy walled insulation, the basic morphological studies are of direct relevance to the many varieties of cross-linked polyethylenes now becoming amongst the most reliable of engineering plastics. There are three basic studies invo… more
Date: January 1, 1982
Creator: Phillips, P.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Modeling of silicon particle growth. Progress report

Description: Efforts at the Jet Propulsion Laboratory toward the production of pure polycrystaline silicon are centered on the concept of silicon particle growth in a fluidized bed reactor (FBR) and a continuous flow pyrolyzer (CFP). The CFP possibly can provide the seed particles which will be grown to larger sizes in the FBR. In both the reactors polycrystalline silicon is obtaned from the pyrolysis of silane. A part of the JPL effort is to develop a model of silicon particle growth for the purpose of pre… more
Date: April 15, 1979
Creator: Praturi, A.K.; Hsu, G.C. & Lutwack, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Rheology of glasses containing crystalline material

Description: The rheology of nonhomogeneous glassy melts that contain crystalline material has not been studied in much detail. In this study, the rheology of melts containing simulated nuclear waste has been characterized as a function of melt temperature and crystalline content. These melts can be either Newtonian or non-Newtonian fluids, depending on their crystalline contents. Melts which are free of crystals are strictly Newtonian. Melts which contain from 2 to 10 vol % crystals are Newtonian fluids, w… more
Date: January 1, 1986
Creator: Plodinec, M J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Model of direct contact heat transfer for latent heat energy storage

Description: Direct contact heat transfer is an attractive method to reduce the cost of heat exchange for latent heat thermal energy storage systems. However, current performance information is insufficient to allow an accurate appraisal of its economic and technical feasibility. In a direct contact heat transfer system, an immiscible fluid is bubbled through the storage media and heat is transferred between the phases as the droplets rise. An analytical model is presented for predicting the temperature of … more
Date: May 1, 1980
Creator: Cease, M. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Properties of Kel F-800 polymer

Description: Kel F-800 fluorocarbon polymer has been selected as the binder for the TATB explosive in the B77 bomb. Kel F-800 is a 3M copolymer derived from the monomers chlorotrifluorethylene (CTFE) and vinylidine fluoride (VF/sub 2/). To understand and define Kel F-800 in relation to its intended use, as well as to generate guidelines for controlling the WR material, a thorough evaluation of its properties and the expected variations from different production lots was made. The research showed that Kel F-… more
Date: July 21, 1977
Creator: Cady, W.E. & Caley, L.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Transient stress evolution and crystallization in laser-irradiated amorphous titania sol-gel films

Description: Amorphous TiO{sub 2} sol-gel films are irreversibly transformed to a crystalline anatase phase when heated to temperatures in excess of 575 K or subjected to intense pulsed or CW laser irradiation. The laser-induced transformation is initiated as a result of impurity absorption and subsequent heating, and results in densification and relative changes in compressive stress of the film. Isothermally annealed films exhibit a decrease in compressive stress as crystallization proceeds while an incre… more
Date: October 1, 1991
Creator: Exarhos, G.J.; Hess, N.J. (Pacific Northwest Lab., Richland, WA (United States)) & Wood, S. (Washington State Univ., Pullman, WA (United States). Dept. of Physics)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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