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Study of brine treatment. Final report

Description: Available information pertinent to the treatment of geothermal brines was collected by literature search and then evaluated and summarized for use by the electric utility and geothermal industries. The information was screened from the geothermal, oil and gas, wastewater disposal, and boiler water treatment industries. The current state of knowledge and methodology concerning the treatment of geothermal brines to control scaling and corrosion in geothermal electric power production was assessed… more
Date: November 1, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Salinity variations and chemical compositions of waters in the Frio Formation, Texas Gulf Coast. Annual report

Description: Waters produced from sandstone reservoirs of the deep Frio Formation exhibit spatial variations in chemical composition that roughly coincide with the major tectonic elements (Houston and Rio Grande Embayments, San Marcos Arch) and corresponding depositional systems (Houston and Norias deltas, Greta-Carancahua barrier/strandplain system) that were respectively active along the upper, lower, and middle Texas Coast during Frio deposition. Within an area, salinities are usually depth dependent, an… more
Date: November 1, 1981
Creator: Morton, R. A.; Garrett Jr., C. M.; Posey, J. S.; Han, J. H. & Jirik, L. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Auger decay mechanism in photon-stimulated desorption of ions from surfaces

Description: Photon-stimulated desorption (PSD) of positive ions was studied with synchrotron radiation using an angle-integrating time-of-flight mass spectrometer. Ion yields as functions of photon energy near core levels were measured from condensed gases, alkali fluorides, and other alkali and alkaline earth halides. These results are compared to bulk photoabsorption measurements with emphasis on understanding fundamental desorption mechanisms. The applicability of the Auger decay mechanism, in which ion… more
Date: November 1, 1983
Creator: Parks, C.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Study of the defect structure of ''pure'' and doped nonstoichiometric CeO/sub 2/. Final report, January 1, 1965--May 31, 1977

Description: The defect structure and transport properties of defects in nonstoichiometric oxides was studied based on their electrical and thermodynamic behavior. Similar studies were also made on doped-nonstoichiometric oxides to determine the effect of the ionic radii, valence and concentration of the dopant cation on the nonstoichiometric defect structure and the transport properties of these defects. The thermodynamic and electrical property study on ''pure'' and doped-nonstoichiometric CeO/sub 2//sub … more
Date: November 1, 1977
Creator: Blumenthal, R.N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Solution structures of calcium regulating proteins: A small-angle scattering study

Description: Small-angle X-ray scattering (SAXS) experiments have shown that the solution structures of two calcium-binding regulatory proteins, calmodulin and troponin C, are significantly different from their crystal structure forms. The structural differences occur in a region of calmodulin that is thought to bind to target enzymes;the calmodulin-enzyme complex is an initiator for many important biochemical processes. Calcium binding to calmodulin induces a conformational change that is a prerequisite fo… more
Date: November 1, 1987
Creator: Trewhella, J.; Heidorn, D.B. & Seeger, P.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Multiple preequilibrium decay processes

Description: Several treatments of multiple preequilibrium decay are reviewed with emphasis on the exciton and hybrid models. We show the expected behavior of this decay mode as a function of incident nucleon energy. The algorithms used in the hybrid model treatment are reviewed, and comparisons are made between predictions of the hybrid model and a broad range of experimental results. 24 refs., 20 figs.
Date: November 1, 1987
Creator: Blann, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Recycling of cleach plant filtrates by electrodialysis removal of inorganic non-process elements.

Description: Water use in the pulp and paper industry is very significant, and the U.S. pulp and paper industries as well as other processing industries are actively pursuing water conservation and pollution prevention by in-process recycling of water. Bleach plant effluent is a large portion of the water discharged from a typical bleached kraft pulp mill. The recycling of bleach plant effluents to the kraft recovery cycle is widely regarded as an approach to low effluent bleached kraft pulp production. The… more
Date: November 1, 2000
Creator: Tsai, S. P.; Pfromm, P.; Henry, M. P.; Fracaro, A. T.; Swanstrom, C. P.; Moon, P. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Mercury Project: A High Average Power, Gas-Cooled Laser For Inertial Fusion Energy Development

Description: Hundred-joule, kilowatt-class lasers based on diode-pumped solid-state technologies, are being developed worldwide for laser-plasma interactions and as prototypes for fusion energy drivers. The goal of the Mercury Laser Project is to develop key technologies within an architectural framework that demonstrates basic building blocks for scaling to larger multi-kilojoule systems for inertial fusion energy (IFE) applications. Mercury has requirements that include: scalability to IFE beamlines, 10 H… more
Date: November 3, 2006
Creator: Bayramian, A.; Armstrong, P.; Ault, E.; Beach, R.; Bibeau, C.; Caird, J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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LOCALIZED CORROSION OF AUSTENITIC STAINLESS STEELEXPOSED TO MIXTURES OF PLUTONIUM OXIDE AND CHLORIDE SALTS

Description: Laboratory corrosion tests were conducted to investigate the corrosivity of moist plutonium oxide/chloride (PuO{sub 2}/Cl-) salt mixtures on 304L and 316L stainless steel coupons. The tests exposed flat coupons for pitting evaluation and 'teardrop' stressed coupons for stress corrosion cracking (SCC) evaluation at room temperature to various mixtures of PuO{sub 2} and chloride-bearing salts for periods up to 500 days. The two flat coupons were placed so that the solid oxide/salt mixture contact… more
Date: November 21, 2008
Creator: Zapp, P; Kerry Dunn, K; Jonathan Duffey, J; Ron Livingston, R & Zane Nelson, Z
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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(Tribology conferences and forums)

Description: The principal meeting attended during this trip was the Japan International Tribology Conference Nagoya 1990. The conference encompassed a wide range of topics, including the tribology of ceramics, the tribology in high-performance automobiles, and many aspects of lubrication technology. Associated forums were also held on the tribology of advanced ceramics, on solid lubrication, and on automotive lubricants. Presentations made during the latter forum discussed anticipated trends in engine deve… more
Date: November 30, 1990
Creator: Yust, C.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Application of MeV ions to the analysis and modification of high temperature superconducting materials

Description: In analyzing the composition of high {Tc} superconducting materials using heavy-ion RBS we discovered that the electronic excitation of the target caused mixing to occur. To study this effect we made superlattice structures of alternating thin layers of Ba{sub 2}YCu{sub 3}O{sub 6+x} and BaF{sub 2}. At this point in the process some mixing has occurred, but the individual layers are still visible. However, as the bombardment continued the layers were mixed together. It may well be that one can u… more
Date: November 2, 1990
Creator: Tombrello, T.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Analysis of stirred-tank carbonation reactors. [Removal of /sup 14/CO/sub 2/ by reaction with Ca(OH)/sub 2/]

Description: The removal of CO/sub 2/ from air in a calcium hydroxide slurry-agitated reactor was investigated to aid the design of such vessels. Gas-liquid interfacial areas were calculated using theoretical rate expression and experimental data at specific operating conditions. A correlation for interfacial areas was then determined as a function of impeller speed, impeller diameter, gas flow rate, and concentration of the slurry. Decontamination factors were also determined.
Date: November 21, 1978
Creator: Sheppard, N.F.; Rizo-Patron, R.C. & Sun, W.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Factors affecting the behavior of bentonite fluids and their in-situ conversion into cement. Final report

Description: To develop a basic understanding of the effects of common salts, hydroxides, and other mud additives on the rheology and other functions of bentonite fluids, bentonite fluids containing these additives were autoclaved at the temperature range 70 to 600/sup 0/F, and under a pressure of 17,000 psi. Subsequently, the high-temperature rheology of the fluids was measured with a FANN 50C viscometer. Other fluid properties such as plastic viscosity, gel strength, yield point, pH, CEC, and fluid losses… more
Date: November 1, 1984
Creator: Gueven, N.; Carney, L.L.; Malekahmadi, F. & Lee, L.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Monitor for detecting nuclear waste leakage in a subsurface repository

Description: The remote fiber fluorimetric portion of the program is slightly ahead of schedule and proceeding well technically. Proof of principle has been demonstrated over a 0.2 km path length using an organic tracer material. Performance and design calculations have been made for the fiber optic components of the system. Optimized fibers have been ordered and special jigs and optical couplings are presently being fabricated. Progress on the high-sensitivity analyzer using coprecipitation techniques has … more
Date: November 5, 1980
Creator: Klainer, S.; Hirschfeld, T.; Bowman, H.; Milanovich, F.; Perry, D. & Johnson, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Raman studies of pressure and temperature induced phase transformations in calcite

Description: Phase stability in the calcium carbonate system was investigated as a simultaneous function of pressure and temperature up to 40 kbar and several hundred degrees Kelvin using micro-Raman techniques to interrogate samples constrained within a resistively heated diamond anvil cell. Measured spectra allow unequivocal identification of crystalline phases and are used to refine the P,T phase diagram. Calcium carbonate was found to exhibit both reversible and irreversible transformation phenomena amo… more
Date: November 1, 1990
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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Accelerated Leach Test Development Program Annual Report: 1990

Description: In FY 1989, a draft accelerated leach test for solidified waste was written. Combined test conditions that accelerate leaching were validated through experimental and modeling efforts. A computer program was developed that calculates test results and models leaching mechanisms. This program allows the user to determine if diffusion controls leaching and, if this is the case, to make projections of releases. Leaching mechanisms other than diffusion (diffusion plus source term partitioning and so… more
Date: November 1990
Creator: Fuhrmann, M.; Pietrzak, R. F.; Heiser, J.; Franz, E. M. & Colombo, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Core analyses for selected samples from the Culebra Dolomite at the Waste Isolation Pilot Plant site

Description: Two groups of core samples from the Culebra Dolomite Member of the Rustler Formation at and near the Waste Isolation Pilot Plant were analyzed to provide estimates of hydrologic parameters for use in flow-and-transport modeling. Whole-core and core-plug samples were analyzed by helium porosimetry, resaturation and porosimetry, mercury-intrusion porosimetry, electrical-resistivity techniques, and gas-permeability methods. 33 refs., 25 figs., 10 tabs.
Date: November 1, 1990
Creator: Kelley, V.A. & Saulnier, G.J. Jr. (INTERA, Inc., Austin, TX (USA))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Magnetic flux noise in copper oxide superconductors

Description: Magnetic flux noise and flux creep in thin films and single crystals of YBa{sub 2}Cu{sub 3}O{sub 7-x}, Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+x}, Tl{sub 2}Ca{sub 2}Ba{sub 2}Cu{sub 3}O{sub x}, and TlCa{sub 2}Ba{sub 2}Cu{sub 3}O{sub x} are measured with a superconducting quantum interference device (SQUID). The noise power spectrum generally scales as 1/f (f is frequency) from 1 Hz to 1 kHz, increases with temperature, and decreases in higher-quality films. It is proportional to the magnetic field … more
Date: November 1, 1991
Creator: Ferrari, M.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Use of precalciners to remove alkali from raw material in the cement industry. Quarterly technical progress report, August-October 1978

Description: A literature survey assisted in defining the role of CaCl/sub 2/ and limitations on its applicability to alkali reduction experimentation. Additional insight into the mechanism and parameters of heat exchange in the precalciner-type kiln systems has been gained from the literature search, which culminated in the preparation of the bibliography covering thermal treatment of raw materials. Experiments investigating the efficiency of alkali volatization from pure argillaceous minerals are underway… more
Date: November 1, 1978
Creator: Miller, F.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Macro-encapsulation of heat storage phase-change materials for use in residential buildings. Final report, September 29, 1976-September 6, 1978

Description: Objectives are to assess the feasibility of macro-encapsulated PCM's for residential solar systems, to develop and evaluate such materials. Encapsulant materials under consideration are multilayer flexible plastic films, steel cans, and plastic bottles. Studies were done in a storage test unit on: CaCl/sub 2/.6H/sub 2/O encapsulated in polyethylene bottles, Mg(NO/sub 3/)/sub 2/6H/sub 2/O in steel cans, Mg(NO/sub 3/)/sub 2/6H/sub 2/O/NH/sub 4/NO/sub 3/ eutectic encapsulated in flexible plastic f… more
Date: November 1, 1978
Creator: Lane, G. A.; Kott, A. C.; Warner, G. L.; Hartwick, P. B. & Rossow, H. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Characterization of hot isostatically pressed Bi-Sr-Ca-Cu-O as a function of consolidation variables

Description: Fully dense, bulk Bi{sub 2}Sr{sub 1.7}CaCu{sub 2}O{sub x} (2212) superconductor pellets were made by hot isostatic pressing in an inert atmosphere. Electron microscopy revealed that rotation and bending of the platelike 2212 grains were responsible for much of the densification. Under processing conditions of 825{degrees}C and 105 MPa, dense pellets were obtained in 15 min. Many dislocations, planar faults, and, perhaps, intergrowths of the Bi{sub 2}Sr{sub 2}CuO{sub x} phase were produced durin… more
Date: November 1, 1991
Creator: Goretta, K. C.; Miller, D. J.; Poeppel, R. B. & Nash, A. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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MAP3S precipitation chemistry network: seventh periodic summary report, 1983. [MAP3S Network]

Description: This summary report, the seventh in the series, contains complete field and chemical data from the MAP3S Precipitation Chemistry Network for the year 1983. Sections cover QA/QC of the MAP3S/PCN; network history, network site information and a MAP3S/PCN bibliography; and a brief statistical look at the laboratory operations for 1983. There is also a brief statistical summary for 1982 to 1983. Included under the Quality Control section are the QA audits for site performance, laboratory comparison… more
Date: November 1, 1984
Creator: Rothert, J.E. & Dana, M.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Overburden Characterization and Post-Burn Study of the Hanna Iv, Underground Coal Gasification Site, Wyoming, and Comparison to Other Wyoming Ucg Sites

Description: Analysis of 21 post-burn cores taken from the Hanna IV UCG site allows 96 m (315 ft) of overburden to be subdivided into four local stratigraphic units. The 7.6 m (25 ft) thick Hanna No. 1 coal seam is overlain by a laterally discontinuous, 3.3 m (11 ft) thick shaley mudstone (Unit A') in part of the Hanna IV site. A more widespread, 30 m (90 ft) thick well-indurated sandstone (Unit A) overlies the A' unit. Unit A is the roof rock for both of the Hanna IV cavities. Overlying Unit A is a 33 m (1… more
Date: November 1, 1984
Creator: Marcouiller, B.A.; Burns, L.K. & Ethridge, F.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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