Partner
Oklahoma Historical Society
625
UNT Libraries Government Documents Department
268
UNT Libraries Special Collections
221
UNT Libraries
115
Rosenberg Library
49
Abilene Library Consortium
30
Hardin-Simmons University Library
18
Sterling Municipal Library
18
UNT Music Library
15
Denton Public Library
13
173 More
Collection
Texas Digital Newspaper Program
664
Oklahoma Digital Newspaper Program
387
Oklahoma Publishing Company Photography Collection
251
Tocker Foundation Grant
236
KXAS-NBC 5 News Collection
178
Office of Scientific & Technical Information Technical Reports
121
Abilene Library Consortium
96
Texas State Publications
54
Harris and Eliza Kempner
41
The Oklahoma City Times
37
392 More
Degree Department
Degree Discipline
Degree Level
Country
States
Decade
Month
Day
Results:
1 - 24 of
1,913
next
I-129 in SRP high-level waste and saltstone
Long-lived isotopes in nuclear waste can have the greatest impact on man and the environment because of the integrated dose over a long time period. Many long-lived radioactive isotopes are present in the waste at Savannah River Plant. Actinide elements make up a significant portion of these isotopes. But when the waste is incorporated into a glass waste form, the actinides are converted to chemically stable oxide species that are released at extremely low and controlled rates, even after the waste form has degraded. Because of their different chemistry, radioactive isotopes of carbon, technetium, and iodine could be released at a significantly higher rate. To establish the potential hazard from these isotopes, their concentration in waste forms for final disposal must be known. The concentrations of C-14 and T{sub c}-99 in SRP waste were previously estimated. Additional analytical data has now been obtained for I-129 in H-Area soluble waste to estimate its concentration in SRP waste. Because of the nature of processes at SRP, most of the I-129 in the waste is in the H-Area waste tanks.
Date:
February 29, 1984
Creator:
Fowler, J. R. & Cook, J. R.
Object Type:
Report
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 37, No. 19, Ed. 1 Friday, February 29, 2008
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
February 29, 2008
Creator:
Pace, Joshua
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[2012.201.B0411.0058]
Photograph is of a man in a suit and tie sitting at a desk with papers and a pen.
Date:
February 29, 1952
Creator:
Burns, Bill
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[98e]-Catalytic reforming of gasoline and diesel fuel
Argonne National Laboratory is developing a fuel processor for converting liquid hydrocarbon fuels to a hydrogen-rich product suitable for a polymer electrolyte fuel cell stack. The processor uses an autothermal reformer to convert the feed to a mixture of hydrogen, carbon dioxide, carbon monoxide and water with trace quantities of other components. The carbon monoxide in the product gas is then converted to carbon dioxide in water-gas shift and preferential oxidation reactors. Fuels that have been tested include standard and low-sulfur gasoline and diesel fuel, and Fischer-Tropsch fuels. Iso-octane and n-hexadecane were also examined as surrogates for gasoline and diesel, respectively. Complete conversion of gasoline was achieved at 750 C in a microreactor over a novel catalyst developed at Argonne. Diesel fuel was completely converted at 850 C over this same catalyst. Product streams contained greater than 60% hydrogen on a dry, nitrogen-free basis with iso-octane, gasoline, and n-hexadecane. For a diesel fuel, product streams contained >50% hydrogen on a dry, nitrogen-free basis. The catalyst activity did not significantly decrease over >16 hours operation with the diesel fuel feed. Coke formation was not observed. The carbon monoxide fraction of the product gas could be reduced to as low as 1% …
Date:
February 29, 2000
Creator:
Pereira, C.; Wilkenhoener, R.; Ahmed, S. & Krumpelt, M.
Object Type:
Article
System:
The UNT Digital Library
Abilene Daily Reporter (Abilene, Tex.), Vol. 12, No. 189, Ed. 1 Saturday, February 29, 1908
Daily newspaper from Abilene, Texas that includes local, state, and national news along with advertising.
Date:
February 29, 1908
Creator:
Shook, L. B.
Object Type:
Newspaper
System:
The Portal to Texas History
The Abilene Daily Reporter (Abilene, Tex.), Vol. 19, No. 309, Ed. 1 Tuesday, February 29, 1916
Daily newspaper from Abilene, Texas that includes local, state, and national news along with advertising.
Date:
February 29, 1916
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Abilene Daily Reporter (Abilene, Tex.), Vol. 33, No. 63, Ed. 1 Sunday, February 29, 1920
Daily newspaper from Abilene, Texas that includes local, state, and national news along with advertising.
Date:
February 29, 1920
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Abilene Reporter-News (Abilene, Tex.), Vol. 59, No. 272, Ed. 2 Thursday, February 29, 1940
Daily newspaper from Abilene, Texas that includes local, state, and national news along with advertising.
Date:
February 29, 1940
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Abilene Reporter-News (Abilene, Tex.), Vol. 63, No. 257, Ed. 2 Tuesday, February 29, 1944
Daily newspaper from Abilene, Texas that includes local, state, and national news along with advertising.
Date:
February 29, 1944
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Abilene Reporter-News (Abilene, Tex.), Vol. 67, No. 205, Ed. 1 Sunday, February 29, 1948
Daily newspaper from Abilene, Texas that includes local, state, and national news along with advertising.
Date:
February 29, 1948
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Abilene Reporter-News (Abilene, Tex.), Vol. 71, No. 247, Ed. 2 Friday, February 29, 1952
Daily newspaper from Abilene, Texas that includes local, state, and national news along with advertising.
Date:
February 29, 1952
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Abilene Reporter-News (Abilene, Tex.), Vol. 75, No. 250, Ed. 1 Wednesday, February 29, 1956
Daily newspaper from Abilene, Texas that includes local, state, and national news along with advertising.
Date:
February 29, 1956
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Abilene Reporter-News (Abilene, Tex.), Vol. 79, No. 257, Ed. 1 Monday, February 29, 1960
Daily newspaper from Abilene, Texas that includes local, state, and national news along with advertising.
Date:
February 29, 1960
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Abilene Semi-Weekly Reporter (Abilene, Tex.), Vol. 35, No. 17, Ed. 1 Tuesday, February 29, 1916
Semi-weekly newspaper from Abilene, Texas that includes local, state, and national news along with advertising.
Date:
February 29, 1916
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Abilene Weekly Reporter (Abilene, Tex.), Vol. 33, No. 63, Ed. 1 Sunday, February 29, 1920
Weekly newspaper from Abilene, Texas that includes local, state, and national news along with advertising.
Date:
February 29, 1920
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
[Account Statement for Dave's Drug & Liquor Store, February 29, 1952]
Invoice for items sold to D. W. Kempner by Dave's Drug & Liquor Store, including St. Remy Brandy of worth $4.50.
Date:
February 29, 1952
Creator:
Dave's Drug & Liquor Store
Object Type:
Text
System:
The Portal to Texas History
[Account Statement for O. P. Jackson Seed Co., Inc., February 29, 1956]
Invoice for items sold to Daniel Webster Kempner by O. P. Jackson Seed Co., Inc., including the cost.
Date:
February 29, 1956
Creator:
O. P. Jackson Seed Co., Inc.
Object Type:
Text
System:
The Portal to Texas History
[Account Statement for Texas Filling Station: February 1952]
List of charges at the Texas Filling Station in Galveston for the month of February 1952, printed on stationery that has an illustration of the building. Handwritten note "Paid, March 4, 1952."
Date:
February 29, 1952
Creator:
Texas Filling Station
Object Type:
Text
System:
The Portal to Texas History
Active sensors for health monitoring of aging aerospace structures
A project to develop non-intrusive active sensors that can be applied on existing aging aerospace structures for monitoring the onset and progress of structural damage (fatigue cracks and corrosion) is presented. The state of the art in active sensors structural health monitoring and damage detection is reviewed. Methods based on (a) elastic wave propagation and (b) electro-mechanical (E/M) impedance technique are cited and briefly discussed. The instrumentation of these specimens with piezoelectric active sensors is illustrated. The main detection strategies (E/M impedance for local area detection and wave propagation for wide area interrogation) are discussed. The signal processing and damage interpretation algorithms are tuned to the specific structural interrogation method used. In the high-frequency E/M impedance approach, pattern recognition methods are used to compare impedance signatures taken at various time intervals and to identify damage presence and progression from the change in these signatures. In the wave propagation approach, the acousto-ultrasonic methods identifying additional reflection generated from the damage site and changes in transmission velocity and phase are used. Both approaches benefit from the use of artificial intelligence neural networks algorithms that can extract damage features based on a learning process. Design and fabrication of a set of structural specimens …
Date:
February 29, 2000
Creator:
Giurgiutiu, Victor; Redmond, James M.; Roach, Dennis & Rackow, Kirk A.
Object Type:
Article
System:
The UNT Digital Library
The Ada Evening News (Ada, Okla.), Vol. 56, No. 303, Ed. 1 Monday, February 29, 1960
Daily newspaper from Ada, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 29, 1960
Creator:
Little, W. D.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Adair County Gleaner (Stilwell, Okla.), Vol. 8, No. 50, Ed. 1 Friday, February 29, 1924
Weekly newspaper from Stilwell, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 29, 1924
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[Adam Rodriguez and Sophia Bush at Obama event]
Photograph of Adam Rodriguez and Sophia Bush standing in the Union Courtyard during a speaking event for 2008 presidential candidate Barack Obama.They are in front of a UNT backdrop and both have microphones in front of them and a stand between them.
Date:
February 29, 2008
Creator:
Elam, Mary
Object Type:
Photograph
System:
The UNT Digital Library
Advanced emissions control development project. Final report, November 1, 1993--February 29, 1996. Phase I
The primary objective of the Advanced Emissions Control Development Program (AECDP) is to develop practical, cost-effective strategies for reducing the emissions of air toxics from coal-fired boilers. Ideally, the project aim is to effectively control air toxic emissions through the use of conventional flue gas cleanup equipment such as electrostatic precipitators (ESPs), fabric filters (baghouses), and wet flue gas desulfurization. B&W`s Clean Environment Development Facility (CEDF) and the AECDP equipment combined to form a state-of-the-art facility for integrated evaluation of combustion and post-combustion emissions control options. Phase I activities were primarily directed at providing a reliable, representative test facility for conducting air toxic emission control development work later in the project. This report summarizes the AECDP Phase I activities which consisted of the design, installation, shakedown, verification, and air toxics benchmarking of the AECDP facility. The AECDP facility consists of an ESP, pulse-jet baghouse, and wet scrubber. All verification and air toxic tests were conducted with a high sulfur, bituminous Ohio coal. In order to successfully apply the results of the program to utility systems, the relationship between the performance of the CEDF/AECDP test equipment and commercial units had to be established. The first step in the verification process was …
Date:
February 29, 1996
Creator:
Farthing, G.A.
Object Type:
Report
System:
The UNT Digital Library
Advanced emissions control development project. Phase 1 final report appendices, November 1, 1993--February 29, 1996
The report contains three appendices from the Phase 1 final report. Appendix A contains wet scrubber sampling and analysis schedules, DBA/lime chemical analysis, and limestone forced oxidation chemical analysis. Appendix B consists of data on air toxic benchmarking baghouse conditions, ESP conditions, and wet scrubber conditions. Appendix C contains the quality assurance results. The primary objective of this project is to develop practical, cost-effective strategies for reducing the emissions of air toxics from coal-fired boilers. Phase 1 was aimed at providing a reliable test facility for conducting air toxic emissions control development work and is described more fully in the main report (OCDO--96013945).
Date:
February 29, 1996
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library