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Element/Target-Dependent Release Times and Release Efficiencies for the Proposed OREB Facility

Description: Experiments have been initiated which are designed to measure the time release characteristics of stable ion implanted species from selected refractory target materials which are potential candidates for forming radioactive beans at the proposed Oak Ridge Exotic Beam Facility. In this report, we provide thermal time release data and estimates of the efficiencies for releasing Cl from Zr{sub 5}Si{sub 3} and {sup 75}As, {sup 79}Br, and {sup 78}Se from Zr{sub 5}Ge{sub 3}. 14 refs., 1 fig., 1 tab.
Date: January 1, 1991
Creator: Alton, G. D.; Jones, C. M.; Olsen, D. K.; Carter, H. K. & Kormicki, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Maintenance of a rural precipitation chemistry center at Whiteface Mountain

Description: For the Past 11 years, Whiteface Mountain (WFM) has been successfully collecting data according to the MAP3S (Multistate Power Production Pollution Study) protocols. These protocols include field sampling, laboratory procedures, sample handling and shipment, and supporting measurements at the summit or lodge including meteorological and air quality parameters. All blind tests and audits have been successfully passed. Since the beginning of the MAP3S program it was recognized that, because of it… more
Date: September 1, 1991
Creator: Mohnen, V.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Advanced two-stage fluidized-bed/cyclonic combustor

Description: The Institute of Gas Technology's (IGT) two-stage fluidized-bed/cyclonic combustor promises increased combustion efficiency, greatly reduced formation of NO{sub x}, significantly lower CO, THC, SO{sub x}, and HCl emissions, lower particulate emission, and production of environmentally benign residue (ash, spent sorbent). The first stage of the combustor is a turbulent fluidized bed, which operates under substoichiometric conditions so that the fuel-bound nitrogen is prevented from producing NO{… more
Date: January 1, 1991
Creator: Rehmat, A.; Lau, F. & Khinkis, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Intense field non-resonant multiphoton absorption of diatomic molecules

Description: We report on the results of nonlinear ionization and dissociation of gas-phase diatomic molecules, H{sub 2}, D{sub 2}, O{sub 2}, and Cl{sub 2}, in an intense (10{sup 11{minus}14} W/cm{sup 2}) laser field. Measurements include energy and angularly resolved vibrational photoelectron spectroscopy, as well as mass spectroscopy. 5 refs., 2 figs.
Date: January 1, 1991
Creator: Yang, B.; Saeed, M.; Breeden, T. & DiMauro, L. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Thermal treatment for chlorine removal from coal

Description: It is the goal of this research to provide the technical basis for development of a process to remove chlorine from coal prior to combustion, based on a thermal treatment process. Through a bench scale study, mechanisms will be investigated, reaction rate constants and activation energies determined, and energy and mass balances performed. The recovery of the chlorine removed from the coal as a markable by-product, calcium chloride suitable for use as a road deicer, will be investigated using a… more
Date: January 1, 1991
Creator: Muchmore, C.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High temperature corrosion during use of chlorine containing coal

Description: The goal of this project is to characterize the role of chlorine in coal on the high temperature corrosion processes which can occur in coal combustion and conversion processes. The experiments include laboratory tests performed in well-controlled high temperature environments and field tests in industrial coal fired boilers. Evaluation of samples of boiler tubes which have been recovered from boilers which used both high and low chlorine coals does not indicate that the higher chlorine levels … more
Date: January 1, 1991
Creator: McNallan, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Oxidative degradation of trichloroethylene adsorbed on active carbons: Use of microwave energy

Description: Chlorinated hydrocarbon compounds (CHCl), such as chlorinated alkanes/alkenes, benzene and biphenyl etc, represent an important fraction of the industrial hazardous wastes produced. Trichloroethylene (TCE) can be removed from waste streams by adsorption on active carbons. The primary objective of the present work was to study the detoxification in air-stream of TCE adsorbed on different types of active carbons using in situ microwave heating. A secondary objective was to examine the regeneratio… more
Date: January 1, 1991
Creator: Varma, R. & Nandi, S.P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Surface structures and surface-atom vibrations determined using photoelectron diffraction

Description: Surface structures of {radical}3 {times} {radical}3 R30{degrees} Cl/Ni(111) and c(2 {times} 2)Cl/Cu(001) were determined using low- temperature angle-resolved photoemission extended fine structure (ARPEFS), which yields both more accurate surface and near-surface structural information for deeper substrate layers. A study of surface-atom vibrations for {radical}3 {times} {radical}3 R30{degrees} Cl/Ni(111) and c(2 {times} 2)Cl/Cu(001) was made using temperature-dependent ARPEFS. A model for pred… more
Date: July 1, 1991
Creator: Wang, L.Q. (California Univ., Berkeley, CA (United States). Dept. of Chemistry Lawrence Berkeley Lab., CA (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Stress corrosion cracking of Al-Li-Cu-Zr alloy 2090 in aqueous Cl sup minus and mixed CO sub 3 sup 2 minus /Cl sup minus environments

Description: A comparison of the short-transverse SCC behavior of 2090 in pH 5.5 Cl{sup {minus}} and alkaline CO{sub 3}{sup 2 {minus}}/Cl{sup {minus}} solutions using a static load smooth bar SCC technique was made. In the alkaline CO{sub 3}{sup 2 {minus}}/Cl{sup {minus}} solutions, E{sub br} for the {alpha}-Al matrix phase was 0.130 V more positive than the E{sub br} of the subgrain boundary T{sub 1} phase. In this environment, stress corrosion cracking test specimens subjected to potentials in the window … more
Date: January 1, 1991
Creator: Buchheit, R.G. (Sandia National Labs., Albuquerque, NM (USA)); Wall, F.D.; Stoner, G.E. (Virginia Univ., Charlottesville, VA (USA). Dept. of Materials Science) & Moran, J.P. (National Inst. of Standards and Technology, Gaithersburg, MD (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Thermal treatment for chlorine removal from coal. Technical report, September 1, 1991--November 30, 1991

Description: It is the goal of this research to provide the technical basis for development of a process to remove chlorine from coal prior to combustion, based on a thermal treatment process. Through a bench scale study, mechanisms will be investigated, reaction rate constants and activation energies determined, and energy and mass balances performed. The recovery of the chlorine removed from the coal as a markable by-product, calcium chloride suitable for use as a road deicer, will be investigated using a… more
Date: December 31, 1991
Creator: Muchmore, C. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reaction of uranium oxides with chlorine and carbon or carbon monoxide to prepare uranium chlorides

Description: The preferred preparation concept of uranium metal for feed to an AVLIS uranium enrichment process requires preparation of uranium tetrachloride (UCI{sub 4}) by reacting uranium oxides (UO{sub 2}/UO{sub 3}) and chlorine (Cl{sub 2}) in a molten chloride salt medium. UO{sub 2} is a very stable metal oxide; thus, the chemical conversion requires both a chlorinating agent and a reducing agent that gives an oxide product which is much more stable than the corresponding chloride. Experimental studies… more
Date: November 1, 1991
Creator: Haas, P. A.; Lee, D. D. & Mailen, J. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High temperature corrosion during use of chlorine containing coal. Technical report, September 1, 1991--November 30, 1991

Description: The goal of this project is to characterize the role of chlorine in coal on the high temperature corrosion processes which can occur in coal combustion and conversion processes. The experiments include laboratory tests performed in well-controlled high temperature environments and field tests in industrial coal fired boilers. Evaluation of samples of boiler tubes which have been recovered from boilers which used both high and low chlorine coals does not indicate that the higher chlorine levels … more
Date: December 31, 1991
Creator: McNallan, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preliminary assessment of halogenated alkanes as vapor-phase tracers

Description: New tracers are needed to evaluate the efficiency of injection strategies in vapor-dominated environments. One group of compounds that seems to meet the requirements for vapor-phase tracing are the halogenated alkanes (HCFCs). HCFCs are generally nontoxic, and extrapolation of tabulated thermodynamic data indicate that they will be thermally stable and nonreactive in a geothermal environment. The solubilities and stabilities of these compounds, which form several homologous series, vary accordi… more
Date: January 1, 1991
Creator: Adams, Michael C.; Moore, Joseph N. & Hirtz, Paul
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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