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Acid-split flowsheets for uranium-plutonium partitioning without a reductant
The flowsheet discussed has been tested in a hot cell experiment using 10% TBP and a poorly controlled temperature near 15/sup 0/C. The test was carried out in the Solvent Extraction Test Facility at Oak Ridge National Laboratory, using highly irradiated mixed-oxide fuel from the Fast Flux Test Facility reactor at Hanford, Washington. The observed concentration profiles for U, Pu, and acid are shown graphically.
Date:
January 1, 1986
Creator:
Campbell, D.O.; Crouse, D.J. & Mills, A.L.
Object Type:
Article
System:
The UNT Digital Library
Acoustic damping for explicit calculations of fluid flow at low Mach number
A method is proposed for damping the sound waves in explicit calculations of fluid flow at low Mach number, where sound waves are usually not of interest but may distract attention from other flow features. The method is based on the introduction of an artificial pressure q of the form q = - q/sub 0/rhoc/sup 2/..delta..t(del x u - del x u/sub 0/), where q/sub 0/ is a coefficient of order unity, rho is the density, c is the sound speed, ..delta..t is the time step, and u/sub 0/ is the velocity field that would obtain at zero Mach number. When del x u/sub 0/ is zero, the method becomes equivalent to the use of an artificial bulk viscosity q/sub 0/rhoc/sup 2/..delta..t. However, del x u/sub 0/ can be substantially different from zero in problems with heat or mass sources (e.g., combustion), and its inclusion is then essential to obtain the correct pressure field. The method is well suited for use in conjunction with explicit numerical schemes that employ acoustic subcycling or artificial reduction of the sound speed for improved efficiency at low Mach number. The beneficial effects of the method are illustrated by means of calculations with an acoustic …
Date:
January 1, 1986
Creator:
Ramshaw, J. D.; O'Rourke, P. J. & Amsden, A. A.
Object Type:
Report
System:
The UNT Digital Library
Acoustic velocity measurements on fluid metals from two-fold compressions to two-fold expansions
Methods used for making acoustic velocity measurements on samples which are destroyed in time scales of milliseconds or less are described. Analytic techniques for using this data to calculate thermodynamic quantities are outlined. New results indicating a linear relationship of acoustic velocity with density over a very large density range are presented. 30 refs., 5 figs. (DWL)
Date:
January 1, 1986
Creator:
Shaner, J. W.; Hixson, R. S.; Winkler, M. A. & Brown, J. M.
Object Type:
Article
System:
The UNT Digital Library
Acoustic wave scattering from a circular crack: comparison of different computational methods
The work reported was motivated by disagreement between the results obtained from two computations of scattering of an axially incident elastic p-wave on a circular crack. One calculation involves the direct solution of the Helmholtz integral equation, showing an oscillating total cross section. The other uses a program called MOOT, in which the elastic displacement near the crack is expanded in regular spherical eigenfunctions of the elastic wave equation. This calculation shows that the oscillations in total cross section disappear rapidly at high wave numbers. The conjecture that the basis for the MOOT expansion was inappropriate is examined by application to a test problem. Results indicate that there is no inadequacy in the spherical basis set. (LEW)
Date:
January 1, 1986
Creator:
Visscher, W.M.
Object Type:
Article
System:
The UNT Digital Library
Actinide removal from nitric acid waste streams
Actinide separations research at the Rocky Flats Plant (RFP) has found ways to significantly improve plutonium secondary recovery and americium removal from nitric acid waste streams generated by plutonium purification operations. Capacity and breakthrough studies show anion exchange with Dowex 1x4 (50 to 100 mesh) to be superior for secondary recovery of plutonium. Extraction chromatography with TOPO(tri-n-octyl-phosphine oxide) on XAD-4 removes the final traces of plutonium, including hydrolytic polymer. Partial neutralization and solid supported liquid membrane transfer removes americium for sorption on discardable inorganic ion exchangers, potentially allowing for non-TRU waste disposal.
Date:
January 1, 1986
Creator:
Muscatello, A.C. & Navratil, J.D.
Object Type:
Article
System:
The UNT Digital Library
Activation analysis of the compact ignition tokamak
The US fusion program has completed the conceptual design of a compact tokamak device that achieves ignition. The high neutron wall loadings associated with this compact deuterium-tritium-burning device indicate that radiation-related issues may be significant considerations in the overall system design. Sufficient shielding will be requied for the radiation protection of both reactor components and occupational personnel. A close-in igloo shield has been designed around the periphery of the tokamak structure to permit personnel access into the test cell after shutdown and limit the total activation of the test cell components. This paper describes the conceptual design of the igloo shield system and discusses the major neutronic concerns related to the design of the Compact Ignition Tokamak.
Date:
January 1, 1986
Creator:
Selcow, E.C.
Object Type:
Article
System:
The UNT Digital Library
Active internal corrector coils
Trim or corrector coils to correct main magnet field errors and provide higher multipole fields for beam optics purposes are a standard feature of superconducting magnet accelerator systems. This paper describes some of the design and construction features of powered internal trim coils and a sampling of the test results obtained.
Date:
January 1, 1986
Creator:
Thompson, P.A.; Cottingham, J.; Dahl, P.; Fernow, R.; Garber, M.; Ghosh, A. et al.
Object Type:
Article
System:
The UNT Digital Library
Active layer hydrology for Imnavait Creek, Toolik, Alaska
In the annual hydrologic cycle, snowmelt is the most significant event at Imnavait Creek located near Toolik Lake, Alaska. Precipitation that has accumulated for more than 6 months on the surface melts in a relatively short period of 7 to 10 days once sustained melting occurs. During the ablation period, runoff dominates the hydrologic cycle. Some meltwater goes to rewetting the organic soils in the active layer. The remainder is lost primarily because of evaporation, since transpiration is not a very active process at this time. Following the snowmelt period, evapotranspiration becomes the dominate process, with base flow contributing the other watershed losses. It is important to note that the water initally lost by evapotranspiration entered the organic layer during melt. This water from the snowpack ensures that each year the various plant communities will have sufficient water to start a new summer of growth.
Date:
January 1, 1986
Creator:
Kane, D.L.
Object Type:
Report
System:
The UNT Digital Library
Activities and Operations of the Advanced Computing Research Facility. January 1985 - July 1986
This report discusses research activities and operations of the Advanced Computing Research Facility (ACRF) at Argonne National Laboratory from January 1985 through June 1986. During this period, the Mathematics and Computer Science Division (MCS) at Argonne received incremental funding from the Applied Mathematical Sciences program of the DOE Office of Energy Research to operate computers with innovative designs that promise to be useful for advanced scientific research. Over a five-month period, four new commercial multiprocessors (an Encore Multimax, a Sequent Balance 21000, an Aliant FX/8, and an Intel iPSC/d5) were installed in the ACRF, creating a new wave of research projects concerning computer systems with parallel and vector architectures. A list of projects, publications, and users supported by the ACRF is included.
Date:
1986
Creator:
Mihaly, Tina & Pieper, Gail W.
Object Type:
Report
System:
The UNT Digital Library
Activities and Operations of the Advanced Computing Research Facility : July - October 1986
Research activities and operations of the Advanced Computing Research Facility (ACRF) at Argonne National Laboratory are discussed for the period from July 1986 through October 1986. The facility is currently supported by the Department of Energy, and is operated by the Mathematics and Computer Science Division at Argonne. Over the past four-month period, a new commercial multiprocessor, the Intel iPSC-VX/d4 hypercube was installed. In addition, four other commercial multiprocessors continue to be available for research - an Encore Multimax, a Sequent Balance 21000, an Alliant FX/8, and an Intel iPSC/d5 - as well as a locally designed multiprocessor, the Lemur. These machines are being actively used by scientists at Argonne and throughout the nation in a wide variety of projects concerning computer systems with parallel and vector architectures.
Date:
1986
Creator:
Pieper, Gail W.
Object Type:
Report
System:
The UNT Digital Library
ACTVE News, Volume 17, Number 1, January/February 1986
Newsletter issued by the Advisory Council for Technical-Vocational Education in Texas discussing news, events, and other relevant information related to technical and vocational education for adults in Texas.
Date:
January 1986
Creator:
Advisory Council for Technical-Vocational Education in Texas
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
[Adan Hernandez in a Room of People]
Photograph of a room with chairs in a row with numerous amounts of people. Among this crowd is artist Adan Hernandez. There is art hanging on the walls and most of the people are either in the aisle between the chairs or in the far corner of the room.
Date:
1986
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
Addison Quadrangle
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:24000
Date:
1986
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Additional measurements of the radiation environment at the Los Alamos Spallation Radiation Effects Facility at LAMPF
Foil activation dosimetry experiments were conducted in a ''rabbit'' system at the completed Los Alamos Spallation Radiation Effects Facility (LASREF). The ''raffit'' system contains four tubes spaced radially outward 0.12, 0.18, 0.27, and 0.38 meters off beam centerline. Foils were irradiated for 3 to 62 hours to measure the neutron flux and energy spectrum radially from beam centerline, along the beamline, and the effect of the Isotope Production (IP) target loadings on the neutron flux in the neutron irradiation locations. Irradiations showed a decrease in the radial flux by a factor of 6 in 0.15 meters of iron outside the IP targets. An enchancement was seen in the 24-keV energy region outside 0.15 meters. There was little difference in the shape of the spectra outside the IP targets and the beam stop with the exception of the high energy tail (energies above 20 MeV). The decrease in the high energy tail outside the beam stop is due to the degradation of the energy of the proton beam in the IP targets. Irradiations outside the beam stop with zero and eight IP targets gave the same spectral shape with the exception of the high energy tail. The magnitude of the integral …
Date:
January 1, 1986
Creator:
Davidson, D. R.; Reedy, R. C.; Greenwood, L. R.; Sommer, W. F. & Wechsler, M. S.
Object Type:
Article
System:
The UNT Digital Library
Additional short-term plutonium urinary excretion data from the 1945-1947 plutonium injection studies
The amount of plutonium excreted per day following intravenous injection was shown to be significantly higher than predicted by the Langham power function model. Each of the Los Alamos National Laboratory notebooks used to record the original analytical data was studied for details that could influence the findings. It was discovered there were additional urine excretion data for case HP-3. This report presents the additional data, as well as data on case HP-6. (ACR)
Date:
January 1, 1986
Creator:
Moss, W.D. & Gautier, M.A.
Object Type:
Article
System:
The UNT Digital Library
[Adults and Students During Poster Art Contest]
Photograph of unidentified students and adults during a poster art contest held at Martin Luther King Middle School. The photograph was taken candidly, while students complete their respective drawings on butcher paper. Two adult women on the far left look on. The group is in the school's cafeteria, judging by the furnishings and some of the equipment in the back. Accompanying information indicates the contest was held as part of Project LEAD (Links Erase Alcohol and Drugs), a national program initiated to educate youth on the dangers and downfalls of drug abuse.
Date:
1986
Creator:
Links, Inc. San Antonio Chapter.
Object Type:
Photograph
System:
The Portal to Texas History
[Adults Operating Booth for DÃa de los Muertos]
Photograph of a group of adults operating a booth. There is a table in front of them that has newspapers acting as a table cover. There are other supplies on the table and a box.
Date:
1986
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
Advanced accelerator research at Argonne
A facility with which to experimentally measure methods of advanced acceleration is at the point of completion at Argonne National Laboratory. The new facility consists a system which produces pulse ''doublets'' of energetic electrons, pulse shaping hardware, a space for experimental apparatus, and a high resolution spectrometer. The leading 21 MeV pulse in a doublet can contain up to 15 nano-coulombs of charge and can be adjusted to be from 6 to over 100 pic-seconds in length. The trailing doublet pulse is at 15 MeV, contains about 10/sup 6/ electrons, and can be precisely positioned behind the first from 0 to more than 2000 pico-seconds. This second pulse serves as a probe of fields produced by the intense leading pulse. The initial experimental program includes studies of wake field effects in structures and in plasma. The high resolution of the spectrometer will also make possible measurements of the wakes of various components such as bellows, beam signal pickups, and vacuum connections. Commissioning of the facility is to begin in September, 1986. Tests using cavities and plasma are expected to begin soon thereafter.
Date:
January 1, 1986
Creator:
Konecny, R.; MacLachlan, J.; Norem, J.; Ruggiero, A.; Schoessow, P. & Simpson, J.
Object Type:
Article
System:
The UNT Digital Library
Advanced remote handling for future applications: The advanced integrated maintenance system
The Consolidated Fuel Reprocessing Program at Oak Ridge National Laboratory has been developing advanced techniques for remote maintenance of future US fuel reprocessing plants. The developed technology has a wide spectrum of application for other hazardous environments. These efforts are based on the application of teleoperated, force-reflecting servomanipulators for dexterous remote handling with television viewing for large-volume hazardous applications. These developments fully address the nonrepetitive nature of remote maintenance in the unstructured environments encountered in fuel reprocessing. This paper covers the primary emphasis in the present program; the design, fabrication, installation, and operation of a prototype remote handling system for reprocessing applications, the Advanced Integrated Maintenance System.
Date:
January 1, 1986
Creator:
Herndon, J.N.; Kring, C.T. & Rowe, J.C.
Object Type:
Article
System:
The UNT Digital Library
Advances in high-resolution studies of the chemical effects in the molybdenum L heavy-ion-induced x-ray satellite emission (HIXSE) spectra
High-resolution measurements of the molybdenum L heavy-ion-induced x-ray satellite emission (HIXSE) spectra of a series of Mo alloys and compounds have been obtained with a new, high-efficiency, high-resolution Bragg crystal spectrometer in the von Hamos geometry. The improved resolution (5 eV at 2.3 keV) is sufficient to reveal the L/sup n/M/sup m/ configuration lines in the L..cap alpha.. and L..beta.. hypersatellite bands. Both sets of lines exhibit the same trend in the variation of the relative yield distribution with the chemical environment as was observed for KL/sup n/ lines of lower Z targets. Difference spectra, using elemental molybdenum as a subtrahend, enhance the systematic variation. These results confirm the analysis and conclusions of lower resolution studies. They also indicate a potential for even greater sensitivity to the chemical environment.
Date:
January 1, 1986
Creator:
Rosseel, T. M.; Dale, J. M.; Hulett, L. D.; Pepmiller, P. L.; Vane, C. R.; Walkiewicz, T. A. et al.
Object Type:
Article
System:
The UNT Digital Library
[Aerial View of Abilene Police Department's Safety City]
Photograph of an aerial view of Abilene Police Department's Safety City.
Date:
January 1986
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
[Aerial View of Fairway Oaks - 1986]
Aerial photograph of of the view looking toward the Fairway Oaks area of Abilene.
Date:
1986
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
The Aerie, Yearbook of North Texas State University, 1986
Yearbook for North Texas State University in Denton, Texas includes photos of and information about the school, student body, professors, and organizations.
Date:
1986
Creator:
North Texas State University
Object Type:
Yearbook
System:
The Portal to Texas History
The Age, Volume 7, Number 1, January 1986
Monthly publication containing information related to Chambers County, Texas, including current events of the Chambers County Historical Commission, the Wallisville Heritage Park, and the Chambers County historical and genealogical societies; reprinted newspaper articles about county events and citizens; and historical news and records.
Date:
January 1986
Creator:
Wallisville Heritage Park (Organization)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History