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Modeling and sensitivity analysis study of the reduction of NO sub x by HNCO. [RAPRENOx process]

Description: A chemical mechanism for the reduction of NO{sub x} by HNCO has been constructed to allow for the modeling of NO{sub x} in exhausts typical of natural gas combustion (RAPRENOx process). The reduction was modeled assuming plug flow, and either isothermal combustion or constant pressure adiabatic combustion. Variables were initial concentrations of NO, NO{sub 2}, CO, CH{sub 4}, H{sub 2}, and HNCO as well as initial temperatures. Exhaust residence time was nominally 1 s. Reduction was not achieved… more
Date: May 1, 1992
Creator: Brown, N. J. & Garay, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Inhibition of retrogressive reactions in coal/petroleum co-processing

Description: The overall objective of this project is to develop a fundamental understanding of the reactions occurring at the onset of coke formation during the CO-processing of coals with action of chemical components, or groups of components, in coals and petroleum feedstocks to quantify and rank the effects of these components in retarding or enhancement of coke formation. The work involves bench scale reactions in microautoclaves, supplemented by studies of the carbonaceous residues by such techniques … more
Date: May 1, 1992
Creator: Schobert, H. H. & Tomic, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Stability of trapped-particle modes in lower-hybrid pump

Description: The stability of dissipative trapped-particle modes in the presence of a self-consistent lower-hybrid pump is analyzed theoretically. The pump can either be a single coherent wave or a spectrum of turbulent waves. Corresponding dispersion relations modified by the pump are derived and conditions for excitation and suppression of the modes are also discussed.
Date: May 1, 1976
Creator: Chen, L.; Kaw, P. K. & Tang, W. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of deposits on corrosion of materials exposed in the Coal-Fired Flow Facility

Description: Candidate heat exchanger materials tested in the Low Mass Flow train at the Coal-Fired Flow Facility (CFFF) at Tullahoma, TN. were analyzed to evaluate their corrosion performance. Tube specimens obtained at each foot of the 14-ft-long Unbend tubes were analyzed for corrosion-scale morphologies, scale thicknesses, and internal penetration depths. Results developed on 1500- and 2000- h exposed specimens were correlated with exposure temperature. In addition, deposit materials collected at severa… more
Date: May 1, 1993
Creator: Natesan, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Status report: A hydrologic framework for the Oak Ridge Reservation

Description: This first status report on the Hydrologic Studies Task of the Oak Ridge Reservation Hydrology and Geology Study (ORRHAGS) revises earlier concepts of subsurface hydrology and hydrogeochemistry of the ORR. A new classification of hydrogeologic units is given, as well as new interpretations of the gydrogeologic properties and processes that influence contaminant migration. The conceptual hydrologic framework introduced in this report is based primarily on reinterpretations of data acquired durin… more
Date: May 1, 1992
Creator: Solomon, D. K.; Toran, L. E.; Dreier, R. B.; Moore, G. K. & McMaster, W. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Some considerations in the splitting of interstitial frank loops formed by irradiation

Description: The splitting of interstitial loops formed by irradiation is considered in detail. It is shown that they may split to form obtuse--angled single shear faults on the intersecting (111) planes. A detailed description of the splitting is given in which the interstitial Frank loop is viewed as being made up of perfect dislocation loop and two shears. The detailed description is then considered in the context of the formation of complex loops as are observed in quenching and irradiation studies. Exp… more
Date: May 1, 1975
Creator: Seshan, K.; Grilhe, J. & Washburn, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Atlantic Richfield Hanford Company quarterly report. Process technology and process development, January--March 1977

Description: This quarterly report is the fourth in a series intended to provide information on research and engineering activities being performed to improve the processing of irradiated reactor fuels, the production of plutonium, and the management of resultant chemical wastes. The work reported here was performed during the period January through March 1977.
Date: May 1, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Boronization in DIII-D

Description: A thin boron film has been applied to the DIII-D tokamak plasma facing surfaces to reduce impurity influx, particularly oxygen and carbon. A direct result of this surface modification was the observation of a regime of very high energy confinement, VH-mode, with confinement times from 1.5 to 2 times greater than predicted by H-mode scaling relation for the same set of parameters. VH-mode discharges are characterized by low ohmic target densities, low edge neutral pressure, and reduced cycling. … more
Date: May 1, 1992
Creator: Jackson, G. L.; Burrell, K. H.; DeBoo, J. C.; Greenfield, C. M.; Groebner, R. J.; Hodapp, T. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Catalytic fabric filtration for simultaneous NO sub x and particulate control

Description: The objective of this program is to develop advanced concepts for removal of NO{sub x} from flue gas emitted by coalfired utility boilers, or for the control of NO{sub x} formation by advanced combustion modification techniques. Funded projects are required to focus on the development of technology that significantly advances the state of the art using a process or a combination of processes capable of reducing NO{sub x}. emissions to 60 ppM or less. The concept must have successfully undergone… more
Date: May 1, 1992
Creator: Weber, G. F.; Ness, S. R.; Laudal, D. L. & Dunham, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Currents density measurements with an ion beam probe

Description: It was shown that by the use of ion beam probing system with the proper detectors experimental expressions can be obtained for v/sub o/ = v/sub o/ (x,y,z) and v/sub d/ = v/sub d (x,y,z). It was also shown that by taking the curl of the difference between the equations, the magnetic field and consequently the plasma current density distribution can be evaluated.
Date: May 1, 1975
Creator: Connor, K. A.; Jennings, W. C. & Hickok, R. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Computer-based accountability system (Phase I) for special nuclear materials at Argonne-West

Description: An automated accountability system for special nuclear materials (SNM) is under development at Argonne National Laboratory-West. Phase I of the development effort has established the following basic features of the system: a unique file organization allows rapid updating or retrieval of the status of various SNM, based on batch numbers, storage location, serial number, or other attributes. Access to the program is controlled by an interactive user interface that can be easily understood by oper… more
Date: May 1, 1982
Creator: Ingermanson, R. S. & Proctor, A. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Environmental status of the Lake Michigan region. Volume 3. Chemistry of Lake Michigan

Description: The report is a synoptic review of data collected over the past twenty years on the chemistry of Lake Michigan. Changes in water quality and sediment chemistry, attributable to cultural and natural influences, are considered in relation to interacting processes and factors controlling the distribution and concentration of chemical substances within the Lake. Temperature, light, and mixing processes are among the important natural influences that affect nutrient cycling, dispersal of pollutants,… more
Date: May 1, 1976
Creator: Torrey, M S
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Soft x-ray camera for internal shape and current density measurements on a noncircular tokamak

Description: Soft x-ray measurements of the internal plasma flux surface shaped in principle allow a determination of the plasma current density distribution, and provide a necessary monitor of the degree of internal elongation of tokamak plasmas with a noncircular cross section. A two-dimensional, tangentially viewing, soft x-ray pinhole camera has been fabricated to provide internal shape measurements on the PBX-M tokamak. It consists of a scintillator at the focal plane of a foil-filtered pinhole camera,… more
Date: May 1, 1988
Creator: Fonck, R. J.; Jaehnig, K. P.; Powell, E. T.; Reusch, M.; Roney, P. & Simon, M. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Corrosion of several metals in supercritical steam at 538/sup 0/C. [85 alloys]

Description: The corrosion of several iron- and nickel-base alloys in supercritical steam at 24.1 MPa (3500 psi) and 538/sup 0/C was measured to 7.92 x 10/sup 7/ s (22,000 h). The experiments were carried out in TVA's Bull Run Steam Plant. Corrosion was measured almost entirely by weight change and visual appearance; a few samples were evaluated by more descriptive analytical techniques. The corrosion rates of low-alloy ferritic steels containing from 1.1 to 8.7 percent Cr and 0.5 to 1.0 percent Mo dif… more
Date: May 1, 1977
Creator: McCoy, H. E. & McNabb, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Piezo electric polaron and polaron pinning in n-CdS

Description: The cyclotron resonance of the piezoelectric polaron in n-CdS has been investigated using far infrared spectroscopy at magnetic fields to 90 kOe. Both lamellar grating and Michelson Fourier transform spectrometers were used with a 0.3/sup 0/K Ge bolometer to study the photon energy region from 10 cm/sup -1/ to 60 cm/sup -1/. The theory of Miyake predicts that the frequency of the polaron's cyclotron resonance is shifted from the bare hand electron resonance frequency according to the expression… more
Date: May 1, 1976
Creator: Nagasaka, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Correlation of radionuclide leachabilities with microstructures of glasses containing Savannah River Plant waste

Description: Leachabilities of cesium and strontium from the glass matrices were correlated with the microstructures of glasses containing waste sludge from two SRP waste tanks. All sludge components, except mercury which volatilized, were completely soluble in the melt, but small amounts of crystalline iron oxide precipitated during cooling. These precipitates were less leachable than the glass matrix. Even though the compositions of the two sludges that were tested were similar, glass containing one of th… more
Date: May 1, 1976
Creator: Kelley, J. A. & Rankin, W. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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International Nuclear Fuel Cycle Fact Book

Description: As the US Department of Energy (DOE) and DOE contractors have become increasingly involved with other nations in nuclear fuel cycle and waste management cooperative activities, a need exists costs for a ready source of information concerning foreign fuel cycle programs, facilities, and personnel. This Fact Book has been compiled to meet that need. The information contained in the International Nuclear Fuel Cycle Fact Book has been obtained from many unclassified sources: nuclear trade journals … more
Date: May 1, 1992
Creator: Leigh, I. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Alternatives for Managing Wastes From Reactors and Post-Fission Operations in the LWR Fuel Cycle: Volume 2. Alternatives for Waste Treatment

Description: Volume II of the five-volume report is devoted to the description of alternatives for waste treatment. The discussion is presented under the following section titles: fuel reprocessing modifications; high-level liquid waste solidification; treatment and immobilization of chop-leach fuel bundle residues; treatment of noncombustible solid wastes; treatment of combustible wastes; treatment of non-high-level liquid wastes; recovery of transuranics from non-high-level wastes; immobilization of misce… more
Date: May 1, 1976
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Thorium utilization program progress report for January 1, 1974--June 30, 1975. [Reprocessing; refabrication; recycle fuel irradiations]

Description: Work was carried out on the following: HTGR reprocessing development and pilot plant, refabrication development and pilot plant, recycle fuel irradiations, engineering and economic studies, and conceptual design of a commercial recycle plant. (DLC)
Date: May 1, 1976
Creator: Lotts, A. L. & Kasten, P. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Segregation induced embrittlement of grain interfaces

Description: Conditions are discussed under which an interface, possibly containing an adsorbed species, is capable of sustaining an atomistically sharp cleavage crack, rather than having any such crack blunt out via dislocation nucleation. Two models for ductile versus brittle interface response are discussed. One of these is applied to model grain boundaries in face centered cubic materials, and is used to compare predictions with experimental observations on the embrittlement of Cu polycrystals by the ad… more
Date: May 1, 1977
Creator: Mason, D D
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reduction in fusion-neutron production in nonaxisymmetric tokamak devices

Description: In tokamak plasmas subjected to substantial toroidal-field ripple, sufficiently energetic members of the bulk-iron population can diffuse rapidly away from the hot central region by the superbanana process. The result is a truncation of the ion velocity distribution, causing a marked reduction in the fusion reactivity. This tail-depletion effect may account in part for the anomalously low central ion temperature deduced from the neutron flux emitted from dense deuterium plasmas in the Alcator d… more
Date: May 1, 1977
Creator: Jassby, D. L.; Towner, H. H.; Goldston, R. J. & Parker, R. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Automated array assembly. Annual report

Description: The goal of the ERDA/JPL LSSA program of $0.50/W selling price for array modules in 1986 turns out to have been remarkably appropriate. An extensive and detailed analysis of technologies which could be related to array module manufacturing was completed and a minimum manufacturing cost in a highly automated line of $0.30/W was found assuming the silicon is free. The panels are of a double glass construction and are based on round wafers. Screen printed silver has been used as the metallization … more
Date: May 1, 1977
Creator: Williams, B. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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HEXEREI: a multi-channel heat conduction convection code for use in transient thermal hydraulic analysis of high-temperature, gas-cooled reactors. Interim report

Description: A description is given of the development and verification of a generalized coupled conduction-convection, multichannel heat transfer computer program to analyze specific safety questions involving high temperature gas-cooled reactors (HTGR). The HEXEREI code was designed to provide steady-state and transient heat transfer analysis of the HTGR active core using a basic hexagonal mesh and multichannel coolant flow. In addition, the core auxiliary cooling systems were included in the code to prov… more
Date: May 1, 1976
Creator: Giles, G. E.; DeVault, R. M.; Turner, W. D. & Becker, B. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Transmissivity iterative calculation routine: theory and numerical implementation

Description: A computer routine, the Transmissivity Iterative Routine (TIR), has been developed for calculating the hydraulic conductivity distribution in highly heterogeneous aquifers where characterization by field measurement methods alone would be prohibitive in cost. The routine yields the two-dimensional distribution of hydraulic conductivity averaged over the aquifer thickness. The agreement between the calculated and actual average conductivity is dependent on the degree to which the groundwater sys… more
Date: May 1, 1975
Creator: Cearlock, D. B.; Kipp, K. L. & Friedrichs, D. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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