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United States Department of Energy Grand Junction Office Reports
1,603
GJBX
1,413
Argonne National Laboratory Reports
476
United States Geological Survey Reports
456
United States Fish and Wildlife Service Maps
444
Biological services program FWS/OBS
426
Water Resources Investigations Reports
383
Atomic Energy Commission Reports
333
National Bureau of Standards Reports
154
Savannah River Laboratory Hydrogeochemical and Stream Sediment Reconnaissance
115
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Workshop on Artificial Superlattices. October 30-31, 1980 at University of Illinois, Urbana-Champaign, Illinois, USA
The program and 24 abstracts are given. The abstracts are divided into the following categories: structure and elastic properties, transport and electronic properties, magnetism and superconductivity, and phonons. The engineering of novel materials using sophisticated preparation techniques has received considerable attention in recent years. This interest has been mainly stimulated by recent developments in preparation techniques such as Molecular Beam Epitaxy, Thermal Vapor Deposition and Sputtering. These advances in deposition technology allow for the first time the preparation of layered materials with well defined layer thicknesses approaching interatomic spacing and opens up new avenues for the production and stabilization of materials that do not occur in nature. In addition to the extensive experimental work on artificial semiconductor superlattices there has been a parallel, almost independent, development relating to artificial metallic superlattices. Although the experimental sophistication of the field is considerable the development of major related theoretical ideas has not kept pace. In view of the large body of experimental work, a pressing need exists for the development of conceptual ideas relating to the novel physics that is created by artificially adding a new periodicity to the lattice. Because of this the Office of Naval Research is sponsoring the first "Workshop …
Date:
October 1980
Creator:
Argonne National Laboratory
Object Type:
Report
System:
The UNT Digital Library
WR 10 Millimeter Wave Microcalorimeter
Abstract: A microcalorimeter has been built in WR 10 waveguide, 75-110 GHz, to serve as a power standard at the National Bureau of Standards (NBS). Included here is an evaluation of the errors in using the microcalorimeter for the measurement of effective efficiency of bolometer mounts. The error analysis shows a systematic uncertainty of +/- .83 percent and a random uncertainty of .37 percent.
Date:
June 1981
Creator:
Weidman, Manly P. & Hudson, Paul A.
Object Type:
Report
System:
The UNT Digital Library
WRAITH: a Computer Code for Calculating Internal and External Doses Resulting From an Atomospheric Release of Radioactive Material
WRAITH is a FORTRAN computer code which calculates the doses received by a standard man exposed to an accidental release of radioactive material
Date:
December 1980
Creator:
Scherpelz, R. I.; Borst, F. J. & Hoenes, G. R.
Object Type:
Report
System:
The UNT Digital Library
[Wyoming Uranium Evaluation] Volume 1: A Summary of the Geology and Uranium Potential of Precambrian Conglomerates in Southeastern Wyoming
From deposit: Since 1975 a cooperative effort between the United States Department of Energy, United States Geological Survey, Geological Survey of Wyoming, the Geology Department, University of Wyoming, and various industry groups has resulted in the discovery of a series of uraniumthorium-and gold-bearing conglomerates in Late Archean and Early Proterozoic metasedimentary rocks of southern Wyoming. The mineral deposits were found by applying the time and strata bound model for the origin of uranium-bearing quartz-pebble conglomerates to favorable rock types within a geologic terrane known from prior regional mapping.
Date:
February 1981
Creator:
Karlstrom, Karl E.; Houston, Robert S.; Flurkey, Andrew J.; Coolidge, Carolyn M.; Kratochvil, Anthony L. & Sever, Cassandra K.
Object Type:
Report
System:
The UNT Digital Library
[Wyoming Uranium Evaluation] Volume 2: Drill-Hole Data, Drill-Site Geology, and Geochemical Data from the Study of Precambrian Uraniferous Conglomerates of the Medicine Bow Mountains and the Sierra Madre of Southeastern Wyoming
From introduction: This volume is presented as a companion to Volume I: The Geology and Uranium Potential of Precambrian Conglomerates in the Medicine Bow Mountains and Sierra Madre of southeastern Wyoming; and to Volume 3: Uranium Assessment for Precambrian Pebble Conglomerates in Southeastern Wyoming. In Volume 1, we summarized the geologic setting and geologic and geochemical characteristics of uranium-bearing conglomerates in Precambrian metasedimentary rocks of southeastern Wyoming. Volume 3 is a geostatistical resource estimate of U and Th in quartz-pebble conglomerates. This volume contains supporting geochemical data, lithologic logs from 48 drill holes in Precambrian rocks of the Medicine Bow Mountains and Sierra Madre, and drill site geologic maps and cross-sections from most of the holes.
Date:
February 1981
Creator:
Karlstrom, Karl E.; Houston, Robert S.; Schmidt, Thomas G.; Inlow, David; Flurkey, Andrew J.; Kratochvil, Anthony L. et al.
Object Type:
Report
System:
The UNT Digital Library
[Wyoming Uranium Evaluation] Volume 3: Uranium Assessment for the Precambrian Pebble Conglomerates in Southeastern Wyoming
From introduction: The Geology Department of the University of Wyoming was asked to make a geostatistical assessment of the uranium endowment of these deposits as a part of the World Class core drilling operations of the Bendix Field Engineering Corporation. This study was to include (a) the development of optimum geostatistical methodology for assessing uranium endowment in areas of close drill control (1 mile or less centers) as well as in areas of distant drill control (5 mile centers or more), (.b) the implementation of this methodology in assessing the uranium resources of the pebble conglomerates in southeastern Wyoming, and (c) the determination of the overall geostatistical uncertainty of the resource estimates. In addition, methods were to be studied for projecting the assessments into new areas, including prediction of estimate uncertainty.
Date:
March 1981
Creator:
Borgman, Leon E.; Sever, Cassandra K.; Quimby, William F.; Andrew, Michael E.; Houston, Robert S. & Karlstrom, Karl E.
Object Type:
Report
System:
The UNT Digital Library
X-Ray Computed Tomography for Nondestructive Evaluation of Advanced Structural Ceramics
Report on the current status of X-ray computed tomography and the principal advantages of CT scanning.
Date:
September 1988
Creator:
Ellingson, William A. & Vannier, Michael W.
Object Type:
Report
System:
The UNT Digital Library
X-ray Computed Tomography for Structural Ceramic Applications : Beam Hardening Corrections
Beam hardening (BH), caused by the energy dependence of x-ray attenuation in materials, reduces the reliability of images generated by computed tomographic (CT) when polychromatic x-ray sources are used. The magnitude of the BH effect was calculated, and four different approaches to BH correction for CT imaging of ceramics were investigated: the ''water bag'' approach, pre-hardening of the beam by use of a filter, linearization correction, and dual-energy methods. The dual-energy approach appears to be a promising means of BH correction for CT imaging of ceramics.
Date:
May 1987
Creator:
Ellingson, William A.; Segal, E. & Vannier, M. W.
Object Type:
Report
System:
The UNT Digital Library
[Yakima Quadrangle: Average Record Data Listings]
Average record data listings taken during aerial gamma-ray and magnetic surveys of the Yakima quadrangle in Washington.
Date:
1981
Creator:
High Life Helicopters, Inc.
Object Type:
Dataset
System:
The UNT Digital Library
[Yakima Quadrangle: Single Record Data Listings]
Single record data listings taken during aerial gamma-ray and magnetic surveys of the Yakima quadrangle in Washington.
Date:
1981
Creator:
High Life Helicopters, Inc.
Object Type:
Dataset
System:
The UNT Digital Library