Access
Partner
Oklahoma Historical Society
1,572
UNT Libraries Special Collections
897
UNT Libraries Government Documents Department
566
UNT Libraries
450
Abilene Christian University Library
326
Rosenberg Library
171
Abilene Library Consortium
120
Hardin-Simmons University Library
100
Sterling Municipal Library
78
Abilene Public Library
48
227 More
Collection
Texas Digital Newspaper Program
2,789
Oklahoma Digital Newspaper Program
1,618
Tocker Foundation Grant
1,060
KXAS-NBC 5 News Collection
749
Abilene Library Consortium
685
ACU Summit Lecture Series
295
Office of Scientific & Technical Information Technical Reports
212
The Oklahoma City Times
137
Ladd & Katherine Hancher Library Foundation
132
Harris and Eliza Kempner
128
599 More
Serial/Series Title
NBC News Scripts
456
NBC News Clips
183
The Oklahoma City Times
137
Personal Papers (MS 80-0002)
122
The Chickasha Daily Express
74
The Oklahoma Daily
68
The Baytown Sun
60
Luke: A Gospel for the World. 72nd Annual Bible Lectures
56
Sapulpa Daily Herald
55
Recovering Spirituality. 84th Annual Bible Lectureship
51
990 More
Degree Department
Degree Discipline
Degree Level
Country
States
Decade
Month
Day
Language
6,552 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
6,552
next
WELDING AND BRAZING OF HIGH-TEMPERATURE RADIATORS AND HEAT EXCHANGERS
Procedures were developed for fabricating highperformance radiators and heat exchangers for the Aircraft Nuclear Propulsion (ANP) Program. These components, which contain multitudes of tube-to-tube sheet and tube-to-fin joints, are similar in design to those under consideration for a variety of space vehicle applications. In order to ensure reliability of the tube-to-tube sheet joints, techniques producing welds of extremely high quality were used and back brazing of the welds with a suitable alloy was incorporated. High-temperature brazing was also incorporated to attach high-conductivity fins to Inconel tubes in the radiators. The selection of a suitable brazing alloy for these applications was dependent upon several factors, including corrosion and oxidation resistance, flow point, and mechanical properties. A Ni- Si-B alloy was found to be adequate from all these considerations. Special brazing procedures were developed to obtain satisfactory flowability of this brazing alloy on tube-to-fin joints. The suitability of these fabrication procedures for the very stringent service conditions to which the radiators and heat exchangers were subjected was demonstrated by testing full-size components under operating conditions. (auth)
Date:
February 20, 1962
Creator:
Slaughter, G.M. & Patriarca, P.
Object Type:
Report
System:
The UNT Digital Library
Temporal perspective on acid deposition research
This statement presented to the Subcommittee on Natural Resources of the US House of Representatives gives a definition of acid rain, presents new data on the regional and temporal nature of the problem, and discusses research needs. (ACR)
Date:
February 20, 1980
Creator:
Hendrey, George R.
Object Type:
Report
System:
The UNT Digital Library
Collector sealants and breathing. Final Report, 25 September 1978-31 December 1979
The objectives of this program were: (1) to investigate the pertinent properties of a variety of possible sealants for solar collectors and identify the most promising candidates, and (2) to study the effect of breathing in flat-plate, thermal solar collector units. The study involved two types of sealants, Class PS which includes preformed seals or gaskets and Class SC which includes sealing compounds or caulks. It was the intent of the study to obtain data regarding initial properties of candidate elastomers from manufacturers and from the technical literature and to use those sources to provide data pertaining to endurance of these materials under environmental service conditions. Where necessary, these data were augmented by experimental measurements. Environmental stresses evaluated by these measurements included elevated temperatures, moisture, ultraviolet light, ozone and oxygen, and fungus. The second major area of the work involved a study of the effects of materials used and design on the durability of solar collectors. Factors such as design, fabrication, materials of construction, seals and sealing techniques and absorber plate coatings were observed on actual field units removed from service. Such phenomena as leakage, corrosion and formation of deposits on glazing and absorber plate were noted. An evaluation of …
Date:
February 20, 1980
Creator:
Mendelsohn, M A; Luck, R M; Yeoman, F A & Navish, Jr, F W
Object Type:
Report
System:
The UNT Digital Library
Development of marketable solar assisted heat pumps. Phase II. Summary report, technical results
A water source heat pump has been designed that is capable of operating over the range from 40 to 110/sup 0/F entering water temperature and has a heating coefficient of performance greater than six in the upper portion of this range. A computerized heat pump balance program was written to allow the performance of either a water-to-water or a water-to-air heat pump to be predicted in either the heating or cooling mode. A detailed program description, flow charts, and sample outputs are appended. The balance program was used to specify components for a high efficiency water-to-water and a high efficiency water-to-air heat pump. Performance predictions for both units in heating and in cooling are included. The water-to-water and water-to-air performance predictions were compared. The water-to-air approach was clearly superior. A detailed design and layout was done for the three solar-assisted water-to-air heat pump. A horizontal configuration was chosen for marketability reasons. The design was made consistent with high quantity production equipment available in our factories and should result in the lowest possible manufacturing cost. A key question to be answered in this project is whether a reciprocating compressor can operate without damage at the high suction pressures characteristic to the …
Date:
February 20, 1981
Creator:
Hundt, R. & Heard, S.
Object Type:
Report
System:
The UNT Digital Library
Simulation program for central helium liquefier
The computer program described here analyzes the performance of Fermilab Central Helium Liquefier (CHL) and predicts the values of the plant thermodynamic variables at all process points in the plant. To simulate CHL, this program is modified from the prototype program which was developed by Hitachi Ltd. a couple of years ago. This program takes care of only the steady state simulation and takes account of the change of the turbine efficiency, the pressure drops and the UA values of the heat exchangers. How to use the program is shown.
Date:
February 20, 1984
Creator:
Kawamura, S.
Object Type:
Report
System:
The UNT Digital Library
The Oklahoma Democrat (Altus, Okla.), Vol. 5, No. 50, Ed. 1 Thursday, February 20, 1913
Weekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 20, 1913
Creator:
Thacker, John Riley
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Democrat. (Altus, Okla.), Vol. 1, No. 49, Ed. 1 Thursday, February 20, 1908
Weekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 20, 1908
Creator:
Williams, Bob
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mangum Star. (Mangum, Okla.), Vol. 20, No. 34, Ed. 1 Thursday, February 20, 1908
Weekly newspaper from Mangum, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 20, 1908
Creator:
Echols, R. C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Armenia, Azerbaijan, and Georgia: Political Developments and Implications for U.S. Interests
This report discusses the history and political background of Armenia, Azerbaijan, and Georgia since their breakaway from the former Soviet Union at the end of 1991. It looks at key issues for the 112th Congress including economies, energy, regional politics, local crime, and terrorism.
Date:
February 20, 2014
Creator:
Nichol, Jim
Object Type:
Report
System:
The UNT Digital Library
The Mangum Star. (Mangum, Okla. Terr.), Vol. 14, No. 33, Ed. 1 Thursday, February 20, 1902
Weekly newspaper from Mangum, Oklahoma that includes local, territorial, and national news along with advertising.
Date:
February 20, 1902
Creator:
Echols, R. C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Gangs in Central America
This report describes the gang problem in Central America, discusses country approaches to deal with the gangs, and analyzes U.S. policy with respect to gangs in Central America.
Date:
February 20, 2014
Creator:
Seelke, Clare Ribando
Object Type:
Report
System:
The UNT Digital Library
PILT (Payments in Lieu of Taxes): Somewhat Simplified
This report explains Payments in Lieu of Taxes (PILT), with an analysis of the five major factors affecting the calculation of a payment to a given county. It also describes the effects of certain legislative changes to PILT in 2009 and 2012.
Date:
February 20, 2014
Creator:
Corn, M. Lynne
Object Type:
Report
System:
The UNT Digital Library
U.S. Manufacturing in International Perspective
This report contains a series of charts and tables that depict the position of manufacturing in the United States relative to other countries according to various metrics.
Date:
February 20, 2014
Creator:
Levinson, Marc
Object Type:
Report
System:
The UNT Digital Library
Employment for Veterans: Trends and Programs
This report discusses veterans' employment trends and programs. The first section presents data on veterans' employment outcomes, identifying recent trends, and discussing issues to consider when interpreting veterans' employment data. The following sections present brief discussions of existing programs that provide employment-related services to veterans. These services are divided into (1) general programs that are broadly available to veterans, (2) programs that target veterans with service-connected disabilities, and (3) competitive grant programs that provide additional employment-related services to veterans but may be limited in scope or availability.
Date:
February 20, 2014
Creator:
Collins, Benjamin; Dilger, Robert Jay; Dortch, Cassandria; Kapp, Lawrence; Lowry, Sean & Perl, Libby
Object Type:
Report
System:
The UNT Digital Library
Weekly Oklahoma State Capital. (Guthrie, Okla.), Vol. 8, No. 43, Ed. 2 Saturday, February 20, 1897
Weekly newspaper from Guthrie, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date:
February 20, 1897
Creator:
Greer, Frank H.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Weekly Oklahoma State Capital. (Guthrie, Okla.), Vol. 8, No. 43, Ed. 1 Saturday, February 20, 1897
Weekly newspaper from Guthrie, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date:
February 20, 1897
Creator:
Greer, Frank H.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mangum Star And Southwest Eagle (Mangum, Okla.), Vol. 31, No. 36, Ed. 1 Thursday, February 20, 1919
Weekly newspaper from Mangum, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 20, 1919
Creator:
Jessee, Elmer V.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Guthrie Daily Star (Guthrie, Okla.), Vol. 8, No. 297, Ed. 1 Tuesday, February 20, 1912
Daily newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 20, 1912
Creator:
Hornaday, W. H.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Weekly News (Altus, Okla.), Vol. 19, No. 52, Ed. 1 Thursday, February 20, 1919
Weekly newspaper from Altus, Oklahoma that includes local, county, state, and national news along with advertising.
Date:
February 20, 1919
Creator:
Orr, J. P.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Crowder City Guardian (Crowder, Oklahoma), Vol. 9, No. 22, Ed. 1 Friday, February 20, 1914
Weekly newspaper from Crowder, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 20, 1914
Creator:
Henderson, J. B.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Guymon Herald. (Guymon, Okla.), Vol. 28, No. 51, Ed. 1 Thursday, February 20, 1919
Weekly newspaper from Guymon, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 20, 1919
Creator:
Denny, J. Q.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Guymon Herald. (Guymon, Okla.), Vol. 22, No. 50, Ed. 1 Thursday, February 20, 1913
Weekly newspaper from Guymon, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 20, 1913
Creator:
Zimmerman, Warren
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Cushing Independent. (Cushing, Okla.), Vol. 7, No. 11, Ed. 1 Thursday, February 20, 1908
Weekly newspaper from Cushing, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 20, 1908
Creator:
Holland, Al. H.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Guymon Herald. (Guymon, Okla.), Vol. 17, No. 49, Ed. 1 Thursday, February 20, 1908
Weekly newspaper from Guymon, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 20, 1908
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History