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Hot gas desulfurization with oxides of zinc, iron, and vanadium

Description: The objective of this study is to develop an improved sorbent which can reduce H{sub 2}S levels up to 1 ppmv or less, which can stabilize zinc, and produce economically recoverable amounts of elemental sulfur during regeneration. For this purpose, the desulfurization performance of sorbents prepared by the addition of various amounts of V{sub 2}O{sub 5} to the zinc ferrite sorbent is investigated.
Date: January 1, 1992
Creator: Akyurtlu, J.F. & Akyurtlu, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Walker Branch Watershed: site description and research scope

Description: Walker Branch Watershed is located on the Oak Ridge Reservation in the Ridge and Valley section of Tennessee. The watershed (97 ha consisting of 2 subwatersheds) is underlain by Knox Dolomite; soils formed over the dolomitic substrate are deep, well-drained Typic Paleudults. The watershed is forested. The overstory is predominantly oak-hickory with lesser amounts of pine and mesic hardwoods. The Walker Branch Watershed Project was initiated in 1967 to: relate the productivity and water quality … more
Date: January 1, 1977
Creator: Harris, W. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Research on alkaline zinc secondary electrodes with emphasis on model testing. Final report, June 15, 1976-August 31, 1979

Description: The goal of this work was to obtain information useful in the improvement of life and performance of alkaline secondary cells utilizing porous zinc electrodes. Toward this end, experiments designed to test predictions of the most sophisticated mathematical models of the porous zinc electrode were performed. This approach is based on the conviction that the surest way to realize a significantly longer-lived zinc electrode is through better understanding of the electrode gained through the intera… more
Date: January 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Relative availability of selected trace elements from coal fly ash and Lake Michigan sediment

Description: The concentration of greater than 1 ..mu..m coal fly ash particles in Lake Michigan surface waters was found to be 10/sup 5/ to 10/sup 6/ per liter. With an expected residence time of one year, this concentration implies a flux to the sediment of 10/sup 6/ to 10/sup 7/ particles/cm/sup 2//yr, or about 10/sup -6/ to 10/sup -5/ g/cm/sup 2//yr. The release of trace elements from fly ash and sediment has been studied using Chelex-100 resin to simulate leaching at high dilutions in natural media. Mn… more
Date: January 1, 1977
Creator: Alberts, J.J.; Burger, J.; Kalhorn, S.; Seils, C. & Tisue, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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RF-GD/FTMS: An FTMS system with a lensless external ion source for high resolution elemental mass spectrometry

Description: Two of the major challenges which face the field of elemental mass spectrometry are the development of versatile atomization/ionization sources for direct solids analysis and methods for reducing the impact of isobaric interferences found on commonly employed quadrupole and sector based instruments. The combination of radio frequency glow discharge (RF-GD) sources with Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR or FTMS) is one technique which addresses both problems. A … more
Date: January 1, 1991
Creator: Weller, R. R.; Pochkowski, J. M.; Duckworth, D. C.; Marcus, R. K. & Buchanan, M. V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Chemical Engineering Division Fuel Cycle Programs. Quarterly progress report, January-March 1979

Description: In the program on pyrochemical and dry processing methods (PDPM) for nuclear fuel, corrosion testing of refractory metals and alloys, graphite, and SiC in PDPM environments was done. A tungsten-metallized Al/sub 2/O/sub 3/-3% Y/sub 2/O/sub 3/ crucible was successfully fabricated. Tungsten microstructure of a plasma-sprayed tungsten crucible was stabilized by nickel infiltration and heat treatment. Solubility measurements of Th in Cd and Cd-Mg alloys were continued, as were experiments to study … more
Date: January 1, 1980
Creator: Steindler, M J; Ader, M & Barletta, R E
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Neutron Brillouin scattering in a metallic glass

Description: The dispersion of collective modes in a metallic glass (Mg{sub 70}Zn{sub 30}) measured earlier at the thermal neutron time-of-flight spectrometer IN4 of the HFR of the ILL could be extended towards lower momentum transfers down to the first pseudo-Brillouin zone for the first time. This extension to momentum transfer not accessible up to now was possible using the highly resolving time-of-flight spectrometer HET of the new spallation source ISIS. In the region of overlap the two parts of the di… more
Date: January 1, 1991
Creator: Suck, J.B. (Kernforschungszentrum Karlsruhe GmbH (Germany). Inst. fuer Nukleare Festkoerperphysik); Egelstaff, P.A. (Guelph Univ., ON (Canada). Dept. of Physics); Robinson, R.A.; Sivia, D.S. (Los Alamos National Lab., NM (United States)) & Taylor, A.D. (Rutherford Appleton Lab., Chilton (United Kingdom))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Sludge application program at the Savannah River Plant

Description: Since 1980 a research program has been conducted at the Savannah River Plant to evaluate the use of domestic sewage sludge to enhance forest productivity. The objectives of the program have been to determine the cost effectiveness and environmental impact of using sewage sludge as a soil conditioner and slow-release fertilizer. The potential impacts of sludge application on nutrient cycling, organic carbon budgets, forest wildlife, and biomass production have been studied. Soil, soil water, gro… more
Date: January 1, 1985
Creator: Corey, J. C.; Lower, M. W. & Davis, C. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Neutron scattering studies of heavy Fermions. [CeAl/sub 3/, UBe/sub 13/, CeCu/sub 2/Si/sub 2/, CeCu/sub 6/, ThBe/sub 13/, UPt/sub 3/, U/sub 2/Zn/sub 17/]

Description: Heavy Fermions are f electron materials characterized by a large linear term in the low temperature specific heat and a large magnetic susceptibility at low temperatures. This implies that there is a narrow peak in the f electron density of states at the Fermi energy. Typical examples are CeAl/sub 3/, UBe/sub 13/, CeCu/sub 2/Si/sub 2/, CeCu/sub 6/, U/sub 2/Zn/sub 17/ and UPt/sub 3/. Neutron scattering measurements can play an important role in understanding the magnetic interactions in these sy… more
Date: January 1, 1985
Creator: Shapiro, S.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Mineral and geothermal resource potential of the Mount Hood Wilderness, Clackamas and Hood River Counties, Oregon. Summary report and map

Description: The potential for near-surface mineral resources in the Mount Hood Wilderness is low. Geochemical data suggest two areas of weak epithermal mineralization in the Zigzag Mountain part of the wilderness: (1) the Lost Creek-Burnt Lake-Cast Creek-Short Creek area on the north side of Zigzag Mountain where vein-type lead-zinc-silver mineralization occurs; and (2) the Lady Creek-Laurel Hill area on the south side of Zigzag Mountain where the upper part of a quartz diorite pluton has associated propyl… more
Date: January 1, 1982
Creator: Keith, T.E.C. & Causey, J.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The role of high-energy synchrotron radiation in biomedical trace element research

Description: This paper will present the results of an investigation of the distribution of essential elements in the normal hepatic lobule. the liver is the organ responsible for metabolism and storage of most trace elements. Although parenchymal hepatocytes are rather uniform histologically, morphometry, histochemistry, immunohistochemistry, and microdissection with microchemical investigations have revealed marked heterogeneity on a functional and biochemical level. Hepatocytes from the periportal and pe… more
Date: January 1, 1987
Creator: Pounds, J. G.; Long, G. J.; Kwiatek, W. M.; Jones, K. W.; Gordon, B. M. & Hanson, A. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A novel process for manufacture of methanol

Description: A bench-scale reactor is being used to conduct studies of the conversion of synthesis gas to methanol by a novel process. During the last quarter, the effect of potassium methoxide and Cu-chromite loading on the MeOH formation rate was investigated. The rate obtained with Cu-chromite was compared to that using Cu-ZnO as catalyst. Work also continued on the modification of the experimental equipment to permit on-line monitoring of liquid and gas compositions.
Date: January 1, 1990
Creator: Tierney, J.W. & Wender, I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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m/sup +/SR studies on pure MnF/sub 2/ and site-diluted (Mn/sub 0. 5/Zn/sub 0. 5/)F/sub 2/

Description: Positive muon spin rotation and relaxation measurements have been carried out on the antiferromagnets, pure MnF/sub 2/ and site-diluted (Mn/sub 0.5/Zn/sub 0.5/)F/sub 2/, above and below the Neel temperature T/sub N/ using single-crystal specimens. Two different muon signals have been found in the pure MnF/sub 2/; with the precession frequency nu/sub A/ = 1.3 GHz for the site A and nu/sub B/ = 152 MHz for the site B measured in zero external magnetic field at T = 5 K. We propose a picture that t… more
Date: January 1, 1986
Creator: Uemura, Y.J.; Keitel, R.; Senba, M.; Kiefl, R.F.; Kreitzman, S.R.; Noakes, D.R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Metabolism of /sup 90/Sr and other elements in man, April 1, 1976--March 31, 1977 (extended without additional funding to March 31, 1978) and renewal proposal, April 1, 1978--March 31, 1979

Description: Trace element studies of cadmium, copper, zinc, lead, manganese, and nickel were carried out under strictly controlled dietary conditions in adult males during different calcium intakes. Complete metabolic balances of the trace elements listed above were determined in each 6-day metabolic period for several weeks by analyzing the constant diet and the urinary and fecal excretions of these naturally occurring elements, using atomic absorption spectroscopy. Strontium-90 metabolism studies in man … more
Date: January 1, 1977
Creator: Spencer, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calcium and zinc adsorption by iron hydrous oxide gel

Description: In the presence of 1M NaNO/sub 3/, freshly precipitated iron hydrous oxide gel suspensions (0.093M Fe) selectively adsorbed Ca and Zn over a wide concentration range. Adsorption was highly pH dependent, especially for Zn. For Ca, the pH at which 50% adsorption occurred, pH/sub 50/, varied from pH 7.15 at 2 x 10/sup -6/M Ca (total) to pH 9.55 at 10/sup -2/M Ca, whereas for Zn, the pH/sub 50/ values varied from pH 5.00 at approx. 10/sup -7/M Zn to pH 6.25 at 10/sup -2/M Zn. Adsorption isotherms f… more
Date: January 1, 1980
Creator: Kinniburgh, D G & Jackson, M L
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Energy response and dose-rate calibration of a Geiger-Mueller gamma-ray detector

Description: To obtain more precise dose-rate measurements, we have taken a commercial gamma-ray dosimeter that uses a Geiger-Mueller (GM) tube as its detector and, by supplying it with an externally regulated high voltage, counted the gamma-ray-induced pulses with suitable scaling and timing circuits. We have now improved the method of calibration by measuring detector response to 13 different sources, each with an independently verified strength, in the energy range from 60 keV to 2.6 MeV. With the use of… more
Date: January 1, 1984
Creator: Plassmann, E.A.; Pederson, R.A. & Moss, C.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Nuclear chemistry progress report. [Physics Department, Princeton University]

Description: Research in the physics department at Princeton University is reviewed briefly. Results on the Coulomb capture of negative muons by the binary alloy systems Cu/Al and Ag/Zn show that (within experimental error) there is no change in the per atom ..mu../sup -/ capture probability when the atomic ratio in these alloys varies over a range of approximately 40. The K muonic x-ray intensity pattern observed from ..mu.. capture in atmospheric N/sub 2/ was strikingly different from that observed when .… more
Date: January 1, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Polyacetylene, (CH)/sub x/, as an emerging material for solar cell applications. Second quarterly technical progress report, July-September 1979

Description: As of the starting date of this contract, a variety of rectifying junctions had been fabricated using doped and undoped (CH)/sub x/. Schottky diodes formed between metallic AsF/sub 5/-doped (CH)/sub x/ and n-type semiconductors indicate high (CH(AsF/sub 5/)/sub y/)/sub x/ electronegativity. The p-type character of undoped trans-(CH)/sub x/ was confirmed by Schottky barrier formation with low work function metals. An undoped p-(CH)/sub x/:n--ZnS heterojunction solar cell has been demonstrated wi… more
Date: January 1, 1979
Creator: Heeger, A.J. & MacDiarmid, A.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Predicting the performance of ceramic filters by the use of silt density index

Description: A series of experiments were conducted to study the rate of filter fouling of several simulants. These solutions contained hydroxides of iron, aluminum, silica, and zinc, using a range of concentration of each under various conditions. Total Solids (TS), Total Suspended Solids (TSS), Total Dissolved Solids (TDS), Silt Density Index (SDI), and conductivity were measured in the studies. The purpose of these experiments was to find out whether or not SDI could be used to accurately predict the per… more
Date: January 1, 1989
Creator: Cain, S.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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