Partner
Oklahoma Historical Society
474
UNT Libraries Special Collections
208
UNT Libraries Government Documents Department
18
Texas Historical Commission
11
Rice University Woodson Research Center
10
Sterling Municipal Library
10
Deaf Smith County Library
9
Carl Albert Congressional Research and Studies Center
6
UNT Libraries
6
Abilene Christian University Library
5
67 More
Collection
Oklahoma Publishing Company Photography Collection
367
KXAS-NBC 5 News Collection
200
Texas Digital Newspaper Program
164
Oklahoma Digital Newspaper Program
106
Tocker Foundation Grant
66
The Oklahoma City Times
18
Abilene Library Consortium
14
Altus Times-Democrat
12
Chickasha Newspaper Collection
12
Ladd & Katherine Hancher Library Foundation
12
108 More
Country
States
Year
Month
Day
Language
Results:
1 - 24 of
890
next
Cause of pitting in beryllium
Light microscopy, bare-film radiography, secondary ion mass spectroscopy, electron microprobe and physical testing were used to examine beryllium specimens exhibiting a stratified, pitted, pattern after chemical milling. The objective was to find the cause of this pattern. Specimens were found to have voids in excess of density specification allowances. These voids are attributed, at least in part, to the sublimation of beryllium fluoride during the vacuum hot pressing operation. The origin of the pattern is attributed to these voids and etching out of fines and associated impurities. Hot isostatic pressing with a subsequent heat treatment close residual porosity and dispersed impurities enough to correct the problem.
Date:
April 16, 1982
Creator:
Kershaw, R. P.
Object Type:
Article
System:
The UNT Digital Library
Development of molten carbonate fuel cell power plant. Quarterly progress report, February 1, 1982-April 30, 1982
Work proceeded this quarter mainly under three program tasks. Under Task 1.0, work was started on preparing a description of the reference Steam Injection System. It is planned to lay out the plant in power unit trains rated at a nominal 100 MW(e). Under Task 2.0, work continued on anode, cathode, current collector, and electrolyte tile develoment and stack design and analysis. Corrosion test results of various current collector materials after 3500 hours exposure are reported. Sintering data at 6000 hours were obtained on twelve different material samples tested to evaluate the effects of chromium and ceramic addition to state-of-the-art and in-house fabricated electrodes. The 6000 hour data showed no change in porosity or pore distribution from the 5000 hour data. The electroless-plated ceramic plaques demonstrated good stability and porosities. Two cells containing dual porosity anodes using all metal-plated-ceramic material, were tested. Although testing was terminated due to cracked tiles, the cell results are encouraging for the experimental anodes. Under Task 4.0, work continued on installation and debugging of the atmospheric bench scale single cell test facility, and operation of a cell started on April 20, 1982. Progress is detailed. (WHK)
Date:
June 16, 1982
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Comparison of measured and calculated uranium isotopic concentrations in cascade streams at the Paducah Gaseous Diffusion Plant
A test has been performed at the Paducah Gaseous Diffusion Plant (PGDP) in connection with studies for the US Arms Control and Disarmament Agency on the possibility of utilizing measurements of the concentrations of the minor uranium isotopes in /sup 235/U enrichment cascade external streams as a safeguards technique (MIST). This is the fourth plant test that has been performed in connection with the MIST studies, the first three having been done at the Oak Ridge Gaseous Diffusion Plant (ORGDP). The main objectives of the test were to measure the isotopic composition and flow rates of the plant external streams over a period of time; to design an appropriate plant model in the manner an IAEA safeguards team might do it and calculate the isotopic compositions of the plant streams; and to compare the calculated isotopic values with the measured ones. The calculated /sup 235/U to /sup 234/U concentration ratios in the product and tails streams did not match the average measured values in the high-power period as well as they did for the low-power period, when the same isotopic composition for natural U was assumed at both power levels - the actual composition of the natural U fed to …
Date:
June 16, 1982
Creator:
Blumkin, S.
Object Type:
Report
System:
The UNT Digital Library
Technological implications of SNAP reactor power system development on future space nuclear power systems
Nuclear reactor systems are one method of satisfying space mission power needs. The development of such systems must proceed on a path consistent with mission needs and schedules. This path, or technology roadmap, starts from the power system technology data base available today. Much of this data base was established during the 1960s and early 1970s, when government and industry developed space nuclear reactor systems for steady-state power and propulsion. One of the largest development programs was the Systems for Nuclear Auxiliary Power (SNAP) Program. By the early 1970s, a technology base had evolved from this program at the system, subsystem, and component levels. There are many implications of this technology base on future reactor power systems. A review of this base highlights the need for performing a power system technology and mission overview study. Such a study is currently being performed by Rockwell's Energy Systems Group for the Department of Energy and will assess power system capabilities versus mission needs, considering development, schedule, and cost implications. The end product of the study will be a technology roadmap to guide reactor power system development.
Date:
November 16, 1982
Creator:
Anderson, R.V.
Object Type:
Report
System:
The UNT Digital Library
Implicit methods in particle simulation
This paper surveys recent advances in the application of implicit integration schemes to particle simulation of plasmas. The use of implicit integration schemes is motivated by the goal of efficiently studying low-frequency plasma phenomena using a large timestep, while retaining accuracy and kinetics. Implicit schemes achieve numerical stability and provide selective damping of unwanted high-frequency waves. This paper reviews the implicit moment and direct implicit methods. Lastly, the merging of implicit methods with orbit averaging can result in additional computational savings.
Date:
March 16, 1982
Creator:
Cohen, B.I.
Object Type:
Article
System:
The UNT Digital Library
[Photograph 2012.201.B0125.0055]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Jim and Mary Carmichael join host Carter Rohde prior to the dinner party."
Date:
November 16, 1982
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0093.0538]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
July 16, 1982
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0136.0060]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Roy Clark-Singer"
Date:
November 16, 1982
Creator:
Wilson, George R.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0142.0337]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
August 16, 1982
Creator:
Hellstern, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0136.0068]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Roy Clark-Singer"
Date:
November 16, 1982
Creator:
Wilson, George R.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0166.0532]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Victor Dow stands inside his 'old' house, used now for storage."
Date:
December 16, 1982
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0148.0543]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Cindy Crittenden considers a stick pony purchase at downtown Oklahoma City's Festifall celebration which began this morning in Kerr Park."
Date:
September 16, 1982
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0144.0291]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Putnam City's Coronado Elementary School students sing for residents at Central Oklahoma Christian Home, 6312 N. Portland."
Date:
November 16, 1982
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0155.0545]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Sandra Day, home economist from Wichita demonstrates how to make bread in a bag at the Hobbies & Crafts Bldg. (state fair ground)."
Date:
April 16, 1982
Creator:
Burnett, Roberta
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0174.0360]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Elaborate scaffolding facilities inside work."
Date:
August 16, 1982
Creator:
Hellstern, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0151.0256]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Lawrence Curtis zoo director, Lee Allan Smith and Bob Duffner discuss plans for the zoological society."
Date:
September 16, 1982
Creator:
Southerland, Paul B.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0170.0046]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Marcus Dupree takes a break after running 75 yards for a TD against Kansas Saturday."
Date:
October 16, 1982
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0141.0232]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Jack Conn, right, chairman of state's Diamond Jubilee Commission, Friday accepted two new Pontiac automobiles donated to the commission for use until the end of the Diamond Jubilee celebration inn November."
Date:
July 16, 1982
Creator:
Wilson, George R.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0138.0580]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Braum's maintenance man Ron coffee cleans up some damage."
Date:
July 16, 1982
Creator:
Hellstern, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0148.0033]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
August 16, 1982
Creator:
Hellstern, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0147.0480]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "William Craig, left, checks in with Ben Zorn, at the Salvation Army."
Date:
December 16, 1982
Creator:
Wilson, George R.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0313B.0413]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
August 16, 1982
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0264.0236]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Trying to guess their gifts by shaking them are Christine Horton, left, and Opal Weaver."
Date:
December 16, 1982
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0231.0706]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Mr. and Mrs. Santa Claus dolls not only make unusual decorations, but can also be fun to play with, as two-year-old Jason Guinn discovers while his mother, Linda, shops at Christmas Expressions in Norman Showing Jason the Mrs. Santa doll is shop co-owner Donna Couch."
Date:
December 16, 1982
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History