Partner
UNT Libraries Government Documents Department
185
Oklahoma Historical Society
115
UNT Libraries Special Collections
27
Sterling Municipal Library
9
San Antonio Public Library
6
Alvin Community College
5
Carl Albert Congressional Research and Studies Center
4
Keystone Crossroads Historical Society
4
Nellie Pederson Civic Library
3
Gaines County Library
3
51 More
Collection
Office of Scientific & Technical Information Technical Reports
151
Texas Digital Newspaper Program
83
Jim Argo Collection
70
Oklahoma Digital Newspaper Program
51
Tocker Foundation Grant
43
Government Accountability Office Reports
14
Congressional Research Service Reports
12
Altus Times-Democrat
10
The Baytown Sun
9
Chickasha Newspaper Collection
9
85 More
Degree Department
Country
States
Year
Month
Day
Results:
1 - 24 of
435
next
Plutonium reclamation facility (PRF), building 236-Z layup plan
This document reviews each system inside PRF to determine the operation and maintenance requirements necessary to maintain safe and predictable system performance for facility systems needed to remain operational while minimizing the maintenance and surveillance being performed. Also covered are the actions required to place PRF in a safe layup configuration while minimizing hazards and taking into account the need for reactivation of certain equipment when cleanup work commences in the future.
Date:
April 6, 1999
Creator:
ANDERSON, R.N.
Object Type:
Report
System:
The UNT Digital Library
Natural Analogues of Nuclear Waste Glass Corrosion.
This report reviews and summarizes studies performed to characterize the products and processes involved in the corrosion of natural glasses. Studies are also reviewed and evaluated on how well the corrosion of natural glasses in natural environments serves as an analogue for the corrosion of high-level radioactive waste glasses in an engineered geologic disposal system. A wide range of natural and experimental corrosion studies has been performed on three major groups of natural glasses: tektite, obsidian, and basalt. Studies of the corrosion of natural glass attempt to characterize both the nature of alteration products and the reaction kinetics. Information available on natural glass was then compared to corresponding information on the corrosion of nuclear waste glasses, specifically to resolve two key questions: (1) whether one or more natural glasses behave similarly to nuclear waste glasses in laboratory tests, and (2) how these similarities can be used to support projections of the long-term corrosion of nuclear waste glasses. The corrosion behavior of basaltic glasses was most similar to that of nuclear waste glasses, but the corrosion of tektite and obsidian glasses involves certain processes that also occur during the corrosion of nuclear waste glasses. The reactions and processes that control basalt …
Date:
January 6, 1999
Creator:
Abrajano, T. A., Jr.; Ebert, W. L. & Luo, J. S.
Object Type:
Report
System:
The UNT Digital Library
1998 Chemical Technology Division Annual Technical Report.
The Chemical Technology (CMT) Division is a diverse technical organization with principal emphases in environmental management and development of advanced energy sources. The Division conducts research and development in three general areas: (1) development of advanced power sources for stationary and transportation applications and for consumer electronics, (2) management of high-level and low-level nuclear wastes and hazardous wastes, and (3) electrometallurgical treatment of spent nuclear fuel. The Division also performs basic research in catalytic chemistry involving molecular energy resources, mechanisms of ion transport in lithium battery electrolytes, and the chemistry of technology-relevant materials. In addition, the Division operates the Analytical Chemistry Laboratory, which conducts research in analytical chemistry and provides analytical services for programs at Argonne National Laboratory (ANL) and other organizations. Technical highlights of the Division's activities during 1998 are presented.
Date:
August 6, 1999
Creator:
Ackerman, J. P.; Einziger, R. E.; Gay, E. C.; Green, D. W. & Miller, J. F.
Object Type:
Report
System:
The UNT Digital Library
Radiation embrittlement studies using anomalous small-angle x-ray scattering
Anomalous small angle x-ray scattering (ASAXS) was performed on an Fe-O.9 wt.% Cu-1.0 wt.% Mn alloy subjected to annealing or electron irradiation. ASAXS takes advantage of natural variations in the atomic scattering factor which exist at energies very near an element's x-ray absorption edge. By performing systematic SAXS experiments at energies near these absorption edges of the constituent alloy elements it is possible to vary the contrast of scattering centers containing the elements and in doing so quantify scatterer composition. The results of such an analysis for the samples in this work indicate the presence of Cu-rich, Cu{sub 85}Mn{sub 15} precipitates in the alloy. By applying the maximum entropy technique to the scattering data, it was possible to extract size distributions of scattering centers fog the different treatments. The results demonstrate the ability to detect and characterize small (11 {angstrom} radius) scatterers at quite low irradiation damage levels (5x10{sup {minus} 4} displacements per atom).
Date:
December 6, 1999
Creator:
Alexander, D. E.; Kestel, B. J.; Seifert, S.; Jemian, P. R.; Odette, G. R.; Klingensmith, D. et al.
Object Type:
Article
System:
The UNT Digital Library
Oral History Interview with Tom Peays, February 6, 1999
Access:
Use of this item is restricted to the UNT Community
Transcript of an interview with Thomas "Tom" Peay, a rancher and Army Air Forces veteran (Air Transport Command), concerning his experiences in the China-Burma-India Theater during World War II. Peay discusses his enrollment in the Civilian Pilot Training Program, 1942; tenure as a primary flight training instructor of Aviation Air Cadets, Harmon Training Center, Ballinger, Texas, 1942-43; Air Ferry Command, 1943; induction into the Army Air Forces, 1943; assignment to the Air Transport Command, 1943; stationing at Tezgaon-Kurmitola, India, 1944; flying C-109s loaded with gasoline over "The Hump" into China; weather problems over the Himalaya Mountains; and his separation from the military, 1946.
Date:
February 6, 1999
Creator:
Alexander, William J. & Peays, Thomas
Object Type:
Book
System:
The UNT Digital Library
The Oklahoma Daily (Norman, Okla.), Vol. 83, No. 134, Ed. 1 Tuesday, April 6, 1999
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
April 6, 1999
Creator:
Allam, Heather
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
A Model for Predicting Grain Boundary Cracking in Polycrystalline Viscoplastic Materials Including Scale Effects
A model is developed herein for predicting the mechanical response of inelastic crystalline solids. Particular emphasis is given to the development of microstructural damage along grain boundaries, and the interaction of this damage with intragranular inelasticity caused by dislocation dissipation mechanisms. The model is developed within the concepts of continuum mechanics, with special emphasis on the development of internal boundaries in the continuum by utilizing a cohesive zone model based on fracture mechanics. In addition, the crystalline grains are assumed to be characterized by nonlinear viscoplastic mechanical material behavior in order to account for dislocation generation and migration. Due to the nonlinearities introduced by the crack growth and viscoplastic constitution, a numerical algorithm is utilized to solve representative problems. Implementation of the model to a finite element computational algorithm is therefore briefly described. Finally, sample calculations are presented for a polycrystalline titanium alloy with particular focus on effects of scale on the predicted response.
Date:
April 6, 1999
Creator:
Allen, D. H.; Helms, K. L. E. & Hurtado, L. D.
Object Type:
Article
System:
The UNT Digital Library
Robots Working with Hazardous Materials
While many research and development activities take place at Sandia National Laboratories' Intelligent Systems and Robotics Center (ISRC), where the "rubber meets the road" is in the ISRC'S delivered systems. The ISRC has delivered several systems over the last few years that handle hazardous materials on a daily basis, and allow human workers to move to a safer, supervisory role than the "hands-on" operations that they used to perform. The ISRC at Sandia performs a large range of research and development activities, including development and delivery of one-of-a-kind robotic systems for use with hazardous materials. Our mission is to create systems for operations where people can't or don't want to perform the operations by hand, and the systems described in this article are several of our first-of-a-kind deliveries to achieve that mission.
Date:
January 6, 1999
Creator:
Amai, W. & Fahrenholtz, J.
Object Type:
Article
System:
The UNT Digital Library
Secret Sessions of Congress: A Brief Historical Overview
“Secret” or “closed door” sessions of the House of Representatives and Senate are held periodically to discuss business, including impeachment deliberations, deemed to require confidentiality and secrecy. Authority for the two chambers to hold these sessions is implied by Article I, section 5, of the Constitution. Both the House and the Senate have supplemented this clause through rules and precedents.
Date:
April 6, 1999
Creator:
Amer, Mildred L.
Object Type:
Report
System:
The UNT Digital Library
Structural and magnetic properties of UCo{sub 1/3}T{sub 2/3}Al solid solutions (T = Ru, Pt, Rh).
We report on neutron diffraction studies of UCo{sub 1/3}T{sub 2/3}Al (T = Ru, Pt, Rh). All three solid solutions form in the hexagonal ZrNiAl structure. The Ru-containing compound is found to be chemically ordered, while the Pt-containing compound is nearly disordered and the Rh-containing compound is purely disordered. All three compounds exhibit long-range magnetic order with rather small U moments.
Date:
August 6, 1999
Creator:
Andreev, A. V.; Bordallo, H. N.; Chang, S.; Nakotte, H.; Schultz, A. J.; Sechovsky, V. et al.
Object Type:
Article
System:
The UNT Digital Library
Spiraling Edge: Fast Surface Reconstruction from Partially Organized Sample Points
Many applications produce three-dimensional points that must be further processed to generate a surface. Surface reconstruction algorithms that start with a set of unorganized points are extremely time-consuming. Often, however, points are generated such that there is additional information available to the reconstruction algorithm. We present a specialized algorithm for surface reconstruction that is three orders of magnitude faster than algorithms for the general case. In addition to sample point locations, our algorithm starts with normal information and knowledge of each point's neighbors. Our algorithm produces a localized approximation to the surface by creating a star-shaped triangulation between a point and a subset of its nearest neighbors. This surface patch is extended by locally triangulating each of the points along the edge of the patch. As each edge point is triangulated, it is removed from the edge and new edge points along the patch's edge are inserted in its place. The updated edge spirals out over the surface until the edge encounters a surface boundary and stops growing in that direction, or until the edge reduces to a small hole that fills itself in.
Date:
January 6, 1999
Creator:
Angel, E. & Crossno, P.
Object Type:
Article
System:
The UNT Digital Library
Production of Gas-Solid Structures in Aluminum and Nickel Alloys by Gasar Processing
Experimental data on directional and bulk solidification of hydrogen-charged samples of aluminum alloy A356 and nickel alloy Inconel 718 are discussed. The solidification structure of the porous zone is shown to be dependent on many process variables. Of these variables, hydrogen content in the melt prior to solidification, and furnace atmospheric pressure during solidification play the decisive role. Also important are the furnace atmosphere composition, the solidification velocity, and the temperature distribution of the liquid metal inside the mold.
Date:
January 6, 1999
Creator:
Apprill, J.M.; Baldwin, M.D.; Maguire, M.C.; Miszkiel, M.E. & Shapovalov, V.I.
Object Type:
Article
System:
The UNT Digital Library
Bricktown
Photograph of a scene on the Bricktown Canal.
Date:
July 6, 1999
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Bricktown
Photograph of a scene on the Bricktown Canal.
Date:
July 6, 1999
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Bricktown Canal
Photograph of a scene along the Bricktown Canal.
Date:
July 6, 1999
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Bricktown Canal
Photograph of a scene along the Bricktown Canal.
Date:
July 6, 1999
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Bricktown Canal
Photograph of a scene along the Bricktown Canal.
Date:
July 6, 1999
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Bricktown Canal
Photograph of a scene along the Bricktown Canal.
Date:
July 6, 1999
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Bricktown Canal
Photograph of a scene along the Bricktown Canal.
Date:
July 6, 1999
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Bricktown Canal
Photograph of a scene along the Bricktown Canal.
Date:
July 6, 1999
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Bricktown Canal
Photograph of a scene along the Bricktown Canal.
Date:
July 6, 1999
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Bricktown Canal
Photograph of a scene along the Bricktown Canal.
Date:
July 6, 1999
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Bricktown Canal
Photograph of a scene along the Bricktown Canal.
Date:
July 6, 1999
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Bricktown Canal
Photograph of a scene along the Bricktown Canal.
Date:
July 6, 1999
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History