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140
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542 Matching Results
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Summary of beryllium specifications, current and historical
This report summarizes beryllium properties included in producer, Department of Energy, and government specifications. The specifications are divided into two major categories: current and historical. Within each category the data are arranged primarily according to increasing purity and secondarily by increasing tensile properties. Qualitative comments on formability and weldability are included. Also, short summaries of powder production and consolidation techniques are provided.
Date:
December 28, 1990
Creator:
Abeln, S.P. & Kyed, P.
Object Type:
Report
System:
The UNT Digital Library
The Paducah Post (Paducah, Tex.), Vol. 84, No. 3, Ed. 1 Wednesday, February 28, 1990
Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date:
February 28, 1990
Creator:
Adams, Patty
Object Type:
Newspaper
System:
The Portal to Texas History
The Paducah Post (Paducah, Tex.), Vol. 84, No. 7, Ed. 1 Wednesday, March 28, 1990
Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date:
March 28, 1990
Creator:
Adams, Patty
Object Type:
Newspaper
System:
The Portal to Texas History
The Paducah Post (Paducah, Tex.), Vol. 84, No. 41, Ed. 1 Wednesday, November 28, 1990
Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date:
November 28, 1990
Creator:
Adams, Patty
Object Type:
Newspaper
System:
The Portal to Texas History
Guest Artist Recital: 1990-10-28 - Alegria Arce, piano
Access:
Use of this item is restricted to the UNT Community
Guest artist recital performed at the UNT College of Music Recital Hall.
Date:
October 28, 1990
Creator:
Arce, Alegria
Object Type:
Sound
System:
The UNT Digital Library
[Photograph 2012.201.B0249.0879]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Entrepreneur Ed Harper displays his Sports card products, 18 months and $35, 000 after inspiration struck ..."
Date:
June 28, 1990
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0356.0156]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
June 28, 1990
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0926.0772]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Horses have the run of the place around the headquarters of the Barnard Ranch. The property's new owner, The Nature Conservancy, intends to keep the headquarters buildings but not the animals. Instead, bison will be brought back once the ranch becomes the Tallgrass Prairie Preserve."
Date:
May 28, 1990
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B1205.0137]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The Statue of Liberty in Edmond's Liberty Park has several bent spikes on its crown, plus a broken nose."
Date:
June 28, 1990
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Clipping: State agencies delivery creative safe-sex message]
A Dallas Times Herald clipping about state and local agencies getting creative when delivering safe-sex messaging and items such as condoms.
Date:
February 28, 1990
Creator:
Ashton, Linda
Object Type:
Clipping
System:
The UNT Digital Library
Calcination and solid state reaction of ceramic-forming components to provide single-phase ceramic product having fine particle size
The invention consists of an improved method for the preparation of single phase, fine grained ceramic materials from precursor powder mixtures where at least one of the components of the mixture is an alkali earth carbonate. The process consists of heating the precursor powders in a partial vacuum under flowing oxygen and under conditions where the partial pressure of CO{sub 2} evolved during the calcination is kept to a very low level relative to the oxygen. The process has been found particularly suitable for the preparation of high temperature copper oxide superconducting materials such as YBa{sub 2}Cu{sub 3}O{sub x} ``123`` and YBa{sub 2}Cu{sub 4}O{sub 8} ``124``.
Date:
September 28, 1990
Creator:
Balachandran, U.; Poeppel, R. B.; Emerson, J. E. & Johnson, S. A.
Object Type:
Patent
System:
The UNT Digital Library
The Colony Leader (The Colony, Tex.), Vol. 9, No. 14, Ed. 1 Wednesday, February 28, 1990
Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date:
February 28, 1990
Creator:
Ball, Jeffrey
Object Type:
Newspaper
System:
The Portal to Texas History
The Colony Leader (The Colony, Tex.), Vol. 9, No. 18, Ed. 1 Wednesday, March 28, 1990
Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date:
March 28, 1990
Creator:
Ball, Jeffrey
Object Type:
Newspaper
System:
The Portal to Texas History
[Letter from Carolyn Barnes to Jack Davis and Bill McCarter, June 28, 1990]
Photocopy of a letter from Carolyn Barnes to Jack Davis and Bill McCarter about their attempts at getting media coverage for the North Texas Institute for Educators on the Visual Arts. Barnes lists some of the groups contacted and their methods of contact. On top of Carolyn Barnes' name are the signed initials "CB".
Date:
June 28, 1990
Creator:
Barnes, Carolyn
Object Type:
Letter
System:
The UNT Digital Library
Evaluation of digital fault-tolerant architectures for nuclear power plant control systems
Four fault tolerant architectures were evaluated for their potential reliability in service as control systems of nuclear power plants. The reliability analyses showed that human- and software-related common cause failures and single points of failure in the output modules are dominant contributors to system unreliability. The four architectures are triple-modular-redundant (TMR), both synchronous and asynchronous, and also dual synchronous and asynchronous. The evaluation includes a review of design features, an analysis of the importance of coverage, and reliability analyses of fault tolerant systems. An advantage of fault-tolerant controllers over those not fault tolerant, is that fault-tolerant controllers continue to function after the occurrence of most single hardware faults. However, most fault-tolerant controllers have single hardware components that will cause system failure, almost all controllers have single points of failure in software, and all are subject to common cause failures. Reliability analyses based on data from several industries that have fault-tolerant controllers were used to estimate the mean-time-between-failures of fault-tolerant controllers and to predict those failures modes that may be important in nuclear power plants. 7 refs., 4 tabs.
Date:
January 28, 1990
Creator:
Battle, R.E.
Object Type:
Article
System:
The UNT Digital Library
[Photograph 2012.201.B0099.0234]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Bobby Bourland, supervised by Candy Williamson, makes photo buttons for an upcoming school reunion."
Date:
June 28, 1990
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0104.0246]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Stan Brantner - Brantner Siding"
Date:
February 28, 1990
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0229.0430]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Only one person - out of 1,307 entrants - correctly picked all 10 categories in The Oklahoma's Academy Award Contest."
Date:
March 28, 1990
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0262.0343]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Leo Hise, looks at bricks that will go on a portable building at Johnson Elementary School"
Date:
June 28, 1990
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0359B.0872]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Putnam coach Mike Little keeps it loose on the practice field for his Panthers."
Date:
November 28, 1990
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Rains County Leader (Emory, Tex.), Vol. 103, No. 3, Ed. 1 Thursday, June 28, 1990
Weekly newspaper from Emory, Texas that includes local, state, and national news along with advertising.
Date:
June 28, 1990
Creator:
Becknell, Kathleen Hill
Object Type:
Newspaper
System:
The Portal to Texas History
The Goldthwaite Eagle (Goldthwaite, Tex.), Vol. 96, No. 49, Ed. 1 Thursday, June 28, 1990
Weekly newspaper from Goldthwaite, Texas that includes local, state, and national news along with extensive advertising.
Date:
June 28, 1990
Creator:
Bridges, G. Frank
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 68, No. 76, Ed. 1 Sunday, January 28, 1990
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
January 28, 1990
Creator:
Brown, Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 68, No. 103, Ed. 1 Wednesday, February 28, 1990
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
February 28, 1990
Creator:
Brown, Leon
Object Type:
Newspaper
System:
The Portal to Texas History