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451 Matching Results
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Corrosion of structural materials by lead-based reactor coolants.
Advanced nuclear reactor design has, in recent years, focused increasingly on the use of heavy-liquid-metal coolants, such as lead and lead-bismuth eutectic. Similarly, programs on accelerator-based transmutation systems have also considered the use of such coolants. Russian experience with heavy-metal coolants for nuclear reactors has lent credence to the validity of this approach. Of significant concern is the compatibility of structural materials with these coolants. We have used a thermal convection-based test method to allow exposure of candidate materials to molten lead and lead-bismuth flowing under a temperature gradient. The gradient was deemed essential in evaluating the behavior of the test materials in that should preferential dissolution of components of the test material occur we would expect dissolution in the hotter regions and deposition in the colder regions, thus promoting material transport. Results from the interactions of a Si-rich mild steel alloy, AISI S5, and a ferritic-martensitic stainless steel, HT-9, with the molten lead-bismuth are presented.
Date:
November 16, 2000
Creator:
Abraham, D. P.; Leibowitz, L.; Maroni, V. A.; McDeavitt, S. M. & Raraz, A. G.
Object Type:
Article
System:
The UNT Digital Library
Timpson & Tenaha News (Timpson, Tex.), Vol. 21, No. 46, Ed. 1 Thursday, November 16, 2006
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
November 16, 2006
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Relativistic Dark Matter at the Galactic Center
In a large region of the supersymmetry parameter space, the annihilation cross section for neutralino dark matter is strongly dependent on the relative velocity of the incoming particles. We explore the consequences of this velocity dependence in the context of indirect detection of dark matter from the galactic center. We find that the increase in the annihilation cross section at high velocities leads to a flattening of the halo density profile near the galactic center and an enhancement of the annihilation signal.
Date:
November 16, 2007
Creator:
Amin, Mustafa A.; /Stanford U., Phys. Dept. /KIPAC, Menlo Park & Wizansky, Tommer
Object Type:
Article
System:
The UNT Digital Library
Muon-induced backgrounds in the CUORICINO experiment
To better understand the contribution of cosmic ray muons to the CUORICINO background, ten plastic scintillator detectors were installed at the CUORICINO site and operated during 3 months of the CUORICINO experiment. From these measurements, an upper limit of 0.0021 counts/keV {center_dot} kg {center_dot} yr (95% C.L.) was obtained on the cosmic ray induced background in the neutrinoless double beta decay region of interest. The measurements were compared to Geant4 simulations, which are similar to those that will be used to estimate the backgrounds in CUORE.
Date:
November 16, 2009
Creator:
Andreotti, E.; Arnaboldi, C.; Avignone, F. T.; Balata, M.; Bandac, I.; Barucci, M. et al.
Object Type:
Article
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 105, No. 208, Ed. 1 Sunday, November 16, 2003
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 16, 2003
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 189, Ed. 1 Tuesday, November 16, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 16, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Report on the Threatened Valley Elderberry Longhorn Beetle and its Elderberry Food Plant at the Lawrence Livermore National Laboratory--Site 300
This report describes the results of an entomological survey in 2002 to determine the presence of the federally-listed, threatened Valley Elderberry Longhorn Beetle or ''VELB'' (Desmocerus culifornicus dimorphus: Coleoptera, Cerambycidae) and its elderberry food plant (Sumbucus mexicana: Caprifoliaceae) on the Lawrence Livermore National Laboratory's (LLNL) Experimental Test Site, known as Site 300. In addition, an area located immediately southeast of Site 300, which is owned and managed by the California Department of Fish and Game (CDFG), but secured by LLNL, was also included in this survey. This report will refer to the survey areas as the LLNL-Site 300 and the CDFG site. The 2002 survey included mapping the locations of elderberry plants that were observed using a global positioning system (GPS) to obtain positional coordinates for every elderberry plant at Site 300. In addition, observations of VELB adults and signs of their infestation on elderberry plants were also mapped using GPS technology. LLNL requested information on the VELB and its elderberry food plants to update earlier information that had been collected in 1991 (Arnold 1991) as part of the 1992 EIS/EIR for continued operation of LLNL. No VELB adults were observed as part of this prior survey. The findings of …
Date:
November 16, 2004
Creator:
Arnold, R. A. & Woollett, J.
Object Type:
Report
System:
The UNT Digital Library
Method of Evaluating, Expanding, and Collapsing Connectivity Regions Within Dynamic Systems
An automated process defines and maintains connectivity regions within a dynamic network. The automated process requires an initial input of a network component around which a connectivity region will be defined. The process automatically and autonomously generates a region around the initial input, stores the region's definition, and monitors the network for a change. Upon detecting a change in the network, the effect is evaluated, and if necessary the regions are adjusted and redefined to accommodate the change. Only those regions of the network affected by the change will be updated. This process eliminates the need for an operator to manually evaluate connectivity regions within a network. Since the automated process maintains the network, the reliance on an operator is minimized; thus, reducing the potential for operator error. This combination of region maintenance and reduced operator reliance, results in a reduction of overall error.
Date:
November 16, 2004
Creator:
Bailey, David A.
Object Type:
Patent
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 31, No. 10, Ed. 1 Friday, November 16, 2001
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
November 16, 2001
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Today Cedar Hill (Duncanville, Tex.), Vol. 35, No. 34, Ed. 1 Thursday, November 16, 2000
Weekly newspaper published in Duncanville, Texas that includes local Cedar Hill, state, and national news along with advertising.
Date:
November 16, 2000
Creator:
Balentine, Kevin
Object Type:
Newspaper
System:
The Portal to Texas History
News Bulletin (Castroville, Tex.), Vol. 41, No. 46, Ed. 1 Thursday, November 16, 2000
Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date:
November 16, 2000
Creator:
Barnes, Thomas
Object Type:
Newspaper
System:
The Portal to Texas History
[TAMS American Idol assembly]
Photograph of an American Idol-themed assembly held for Texas Academy of Mathematics and Science (TAMS) students at UNT's McConnell Hall. A boy can be seen performing in the center of the photograph. He is holding a sheet of paper in his left hand and a microphone in his right. Individuals can be seen sitting in the foreground and the background of the photograph, watching the performance.
Date:
November 16, 2005
Creator:
Baugh, Brian
Object Type:
Photograph
System:
The UNT Digital Library
[TAMS student performs at American Idol assembly]
Photograph of a Texas Academy of Mathematics and Science (TAMS) student performing at an American Idol-themed assembly. The girl can be seen on the left side of the photograph, looking to the right of the camera. She is holding a microphone in her right hand and appears to be singing.
Date:
November 16, 2005
Creator:
Baugh, Brian
Object Type:
Photograph
System:
The UNT Digital Library
[TAMS students perform at American Idol assembly, 1]
Photograph of three Texas Academy of Mathematics and Science (TAMS) students performing at an American Idol-themed assembly. Two girls can be seen standing on opposite sides of the image, facing each other. They are each holding a microphone. In the center of the three, a boy is bending his knees and arching his back as if he is dancing.
Date:
November 16, 2005
Creator:
Baugh, Brian
Object Type:
Photograph
System:
The UNT Digital Library
[TAMS students perform at American Idol assembly, 2]
Photograph of three Texas Academy of Mathematics and Science (TAMS) students performing at an American Idol-themed assembly. Two girls can be seen standing on opposite sides of the image, holding microphones. The girl on the left appears to be singing. In the center of the three, a boy is pointing to the singing girl, closing his eyes, and puckering his lips.
Date:
November 16, 2005
Creator:
Baugh, Brian
Object Type:
Photograph
System:
The UNT Digital Library
[TAMS students watch American Idol audition videos, 1]
Photograph of Texas Academy of Mathematics and Science (TAMS) students watching audition videos for American Idol during an Idol-themed assembly. Students can be seen sitting in chairs, looking at a projector screen hanging on the back wall of the room. Video footage on the screen shows a man dancing.
Date:
November 16, 2005
Creator:
Baugh, Brian
Object Type:
Photograph
System:
The UNT Digital Library
[TAMS students watch American Idol audition videos, 2]
Photograph of Texas Academy of Mathematics and Science (TAMS) students watching audition videos for American Idol during an Idol-themed assembly. Students can be seen sitting in chairs, looking at a projector screen hanging on the back wall of the room. Video footage on the screen shows a man singing.
Date:
November 16, 2005
Creator:
Baugh, Brian
Object Type:
Photograph
System:
The UNT Digital Library
[Clipping: A conspiracy among us]
Newspaper clipping discussing the 40th anniversary of the assassination of former President John F. Kennedy. There are red markings in pen that were made by Charles E. Reagan, Jr., during his research on President John F. Kennedy.
Date:
November 16, 2003
Creator:
Beach, Patrick
Object Type:
Clipping
System:
The UNT Digital Library
Critical exponents on inhomogeneous ferromagnets.
None
Date:
November 16, 2001
Creator:
Berger, A.; Campillo, G.; Vivas, P.; Pearson, J. E. & Bader, S. D.
Object Type:
Article
System:
The UNT Digital Library
Graduate Artist Certificate Recital: 2009-11-16 – Christian Bester, baritone
Recital presented at the UNT College of Music Recital Hall in partial fulfillment of the Graduate Artist Certificate in Music Performance.
Date:
November 16, 2009
Creator:
Bester, Christian
Object Type:
Sound
System:
The UNT Digital Library
Al Qaeda: Statements and Evolving Ideology
None
Date:
November 16, 2004
Creator:
Blanchard, Christopher M.
Object Type:
Report
System:
The UNT Digital Library
Saudi Arabia: Background and U.S. Relations
The kingdom of Saudi Arabia, ruled by the Al Saud family since its founding in 1932, wields significant political and economic influence as the birthplace of the Islamic faith and by virtue of its large energy reserves. This report provides background information about Saudi Arabia and analyzes current issues in U.S.-Saudi relations.
Date:
November 16, 2009
Creator:
Blanchard, Christopher M.
Object Type:
Report
System:
The UNT Digital Library
Thinking Inside the Box
In early 2007, SLAC was faced with a shortage of both electrical power and cooling in the main computer building, at the same time that the BaBar collaboration needed a new cluster of 250 batch machines installed. A number of different options were explored for the expansion. Provision of additional electrical power to the building was estimated to take one to two years, and cost several million dollars; additional cooling was even worse. Space in a Silicon Valley co-location facilities was reasonable on a one-year timescale, but broke even in costs by the end of three years, and were more expensive after that. There were also unresolved questions about the affects of additional latency from an offsite compute cluster to the onsite disk servers. The option of converting existing experimental hall space into computer space was estimated at one year, with uncertain availability. An option to aggressively replace several existing clusters with more power-efficient equipment was studied closely, but was disruptive to continued operations, expensive, and didn't provide any additional headroom. Finally, the installation of a Sun Project Blackbox (PBB) unit was selected as providing the capacity on a timescale of six months for a reasonable cost with minimal disruption …
Date:
November 16, 2007
Creator:
Boeheim, Charles T.
Object Type:
Article
System:
The UNT Digital Library
Homeland Security: Evolving Roles and Missions for United States Northern Command
This report provides an overview of the evolving roles and missions for United States Northern command on Homeland Security.
Date:
November 16, 2006
Creator:
Bowman, Steve & Crowhurst, James
Object Type:
Report
System:
The UNT Digital Library