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CRYSTALLIZATION IN MULTICOMPONENT GLASSES
In glass processing situations involving glass crystallization, various crystalline forms nucleate, grow, and dissolve, typically in a nonuniform temperature field of molten glass subjected to convection. Nuclear waste glasses are remarkable examples of multicomponent vitrified mixtures involving partial crystallization. In the glass melter, crystals form and dissolve during batch-to-glass conversion, melter processing, and product cooling. Crystals often agglomerate and sink, and they may settle at the melter bottom. Within the body of cooling glass, multiple phases crystallize in a non-uniform time-dependent temperature field. Self-organizing periodic distribution (the Liesegnang effect) is common. Various crystallization phenomena that occur in glass making are reviewed.
Date:
October 8, 2009
Creator:
AA, KRUGER & PR, HRMA
Object Type:
Article
System:
The UNT Digital Library
Timpson & Tenaha News (Timpson, Tex.), Vol. 28, No. 40, Ed. 1 Thursday, October 8, 2009
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
October 8, 2009
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 105, No. 175, Ed. 1 Wednesday, October 8, 2003
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 8, 2003
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 163, Ed. 1 Friday, October 8, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 8, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The PRIME Project: A Proposal for Fermilab to Join a NASA SMEX
None
Date:
October 8, 2001
Creator:
Annis, Jim; Kron, Rich; Lee, Brian; Lin, Huan; Peoples, John; Stoughton, Chris et al.
Object Type:
Report
System:
The UNT Digital Library
THE ELECTRONIC STRUCTURE OF AG/CU(100) SURFACE ALLOYS STUDIES BY AUGER-PHOTOELECTRON COINCIDENCE SPECTROSCOPY.
We have measured the Ag and Pd M{sub 5}VV Auger spectrum in coincidence with Ag and Pd 4d{sub 5/2} photoelectrons for the Ag/Cu(100) and Pd/Cu(100) systems, respectively, as a function of admetal coverage. These systems form surface alloys (i.e. random substitutional alloys in the first atomic layer) for impurity concentrations in the 0.1 monolayer range. For these systems, the centroid of the impurity 4d levels is expected to shift away from the Fermi level by {approx}1 eV [Ruban et al., Journal of Molecular Catalysis. A 115 (1997) 421], an effect that should be easily seen in coincidence core-valence-valence Auger spectra. We find that the impurity Auger spectra of both systems shift in a manner that is consistent with d-band moving away from EF. However, the shift for Pd is considerably smaller than expected, and a shift almost absent for Ag. The disagreement between theory and experiment is most likely caused by the neglect of lattice relaxations in the calculations.
Date:
October 8, 2001
Creator:
Arena, D. A.; Bartynski, R. A. & Hulbert, S. L.
Object Type:
Book
System:
The UNT Digital Library
Aqueous Corrosion Rates for Waste Package Materials
The purpose of this analysis, as directed by ''Technical Work Plan for: Regulatory Integration Modeling and Analysis of the Waste Form and Waste Package'' (BSC 2004 [DIRS 171583]), is to compile applicable corrosion data from the literature (journal articles, engineering documents, materials handbooks, or standards, and national laboratory reports), evaluate the quality of these data, and use these to perform statistical analyses and distributions for aqueous corrosion rates of waste package materials. The purpose of this report is not to describe the performance of engineered barriers for the TSPA-LA. Instead, the analysis provides simple statistics on aqueous corrosion rates of steels and alloys. These rates are limited by various aqueous parameters such as temperature (up to 100 C), water type (i.e., fresh versus saline), and pH. Corrosion data of materials at pH extremes (below 4 and above 9) are not included in this analysis, as materials commonly display different corrosion behaviors under these conditions. The exception is highly corrosion-resistant materials (Inconel Alloys) for which rate data from corrosion tests at a pH of approximately 3 were included. The waste package materials investigated are those from the long and short 5-DHLW waste packages, 2-MCO/2-DHLW waste package, and the 21-PWR commercial waste …
Date:
October 8, 2004
Creator:
Arthur, S.
Object Type:
Report
System:
The UNT Digital Library
Large Scale Atmospheric Chemistry Simulations for 2001: An Analysis of Ozone and Other Species in Central Arizona
A key atmospheric gas is ozone. Ozone in the stratosphere is beneficial to the biosphere because it absorbs a significant fraction of the sun's shorter wavelength ultraviolet radiation. Ozone in the troposphere is a pollutant (respiratory irritant in humans and acts to damage crops, vegetation, and many materials). It affects the Earths energy balance by absorbing both incoming solar radiation and outgoing long wave radiation. An important part of the oxidizing capacity of the atmosphere involves ozone, through a photolysis pathway that leads to the hydroxyl radical (OH). Since reaction with OH is a major sink of many atmospheric species, its concentration controls the distributions of many radiatively important species. Ozone in the troposphere arises from both in-situ photochemical production and transport from the stratosphere. Within the troposphere, ozone is formed in-situ when carbon monoxide (CO), methane (CH4), and non-methane hydrocarbons (NMHCs) react in the presence of nitrogen oxides (NO, = NO + NO2) and sunlight. The photochemistry of the stratosphere differs significantly from that in the troposphere. Within the stratosphere, ozone formation is initiated by the photolysis of 02. Stratospheric ozone may be destroyed via catalytic reactions with NO, H (hydrogen), OH, CI (chlorine) and Br (bromine), or photolysis. …
Date:
October 8, 2002
Creator:
Atherton, C; Bergmann, D; Cameron-Smith, P; Connell, P; Molenkamp, C; Rotman, D et al.
Object Type:
Article
System:
The UNT Digital Library
The NOvA Technical Design Report
Technical Design Report (TDR) describes the preliminary design of the NOvA accelerator upgrades, NOvA detectors, detector halls and detector sites. Compared to the March 2006 and November 2006 NOvA Conceptual Design Reports (CDR), critical value engineering studies have been completed and the alternatives still active in the CDR have been narrowed to achieve a preliminary technical design ready for a Critical Decision 2 review. Many aspects of NOvA described this TDR are complete to a level far beyond a preliminary design. In particular, the access road to the NOvA Far Detector site in Minnesota has an advanced technical design at a level appropriate for a Critical Decision 3a review. Several components of the accelerator upgrade and new neutrino detectors also have advanced technical designs appropriate for a Critical Decision 3a review. Chapter 1 is an Executive Summary with a short description of the NOvA project. Chapter 2 describes how the Fermilab NuMI beam will provide a narrow band beam of neutrinos for NOvA. Chapter 3 gives an updated overview of the scientific basis for the NOvA experiment, focusing on the primary goal to extend the search for {nu}{sub {mu}} {yields} {nu}{sub e} oscillations and measure the sin{sup 2}(2{theta}{sub 13}) parameter. …
Date:
October 8, 2007
Creator:
Ayres, D. S.; Drake, G. R.; Goodman, M. C.; Grudzinski, J. J.; Guarino, V. J.; Talaga, R. L. et al.
Object Type:
Report
System:
The UNT Digital Library
A CW normal-conductive RF gun for free electron laser and energy recovery linac applications
Currently proposed energy recovery linac and high average power free electron laser projects require electron beam sources that can generate up to {approx} 1 nC bunch charges with less than 1 mmmrad normalized emittance at high repetition rates (greater than {approx} 1 MHz). Proposed sources are based around either high voltage DC or microwave RF guns, each with its particular set of technological limits and system complications. We propose an approach for a gun fully based on mature RF and mechanical technology that greatly diminishes many of such complications. The concepts for such a source as well as the present RF and mechanical design are described. Simulations that demonstrate the beam quality preservation and transport capability of an injector scheme based on such a gun are also presented.
Date:
October 8, 2008
Creator:
Baptiste, Kenneth; Corlett, John; Kwiatkowski, Slawomir; Lidia, Steven; Qiang, Ji; Sannibale, Fernando et al.
Object Type:
Article
System:
The UNT Digital Library
Study of Dark Matter inspired cMSSM scenarios at a TeV-class Linear Collider
The accuracy in the measurement of the masses of sleptons and heavy Higgs bosons in cMSSM scenarios, compatible with the WMAP result on cold dark matter, has been re-analysed in view of the requirements for predicting this density to a few percent level from SUSY measurements at the linear collider.
Date:
October 8, 2004
Creator:
Battaglia, Marco
Object Type:
Article
System:
The UNT Digital Library
Assistance After Hurricanes and Other Disasters: FY2004 and FY2005 Supplemental Appropriations
This report presents summary information on the requests and congressional action for supplemental disaster relief funding for FY2004.
Date:
October 8, 2004
Creator:
Bea, Keith & Chite, Ralph M.
Object Type:
Report
System:
The UNT Digital Library
Ben Milam statue, Milam County Courthouse grounds
Photograph of a statue of Ben Milam on the grounds of the Milam County Courthouse. He stands with his hat raised in one hand, and he holds a rifle in the other. The base of the statue simply says "Milam".
Date:
October 8, 2006
Creator:
Belden, Dreanna L.
Object Type:
Photograph
System:
The Portal to Texas History
Ben Milam statue, Milam County Courthouse grounds
Photograph of the base of a statue of Ben Milam on the grounds of the Milam County Courthouse. It says, "Who will follow Old Ben Milam into San Antonio. Erected by the state of Texas 1936 with funds appropriated by the Federal Government to commemorate one hundred years of Texas independence."
Date:
October 8, 2006
Creator:
Belden, Dreanna L.
Object Type:
Photograph
System:
The Portal to Texas History
Ben Milam statue, Milam County Courthouse grounds
Photograph of the base of a statue of Ben Milam on the grounds of the Milam County Courthouse. It says "Benjamin Rush Milam. Born in Kentucky 1788, soldier in the War of 1812, trader with the Texas Comanche Indians 1818, Colonel in the Long Expedition in 1820, Empresario from 1826 to 1835."
Date:
October 8, 2006
Creator:
Belden, Dreanna L.
Object Type:
Photograph
System:
The Portal to Texas History
Ben Milam statue, Milam County Courthouse grounds
Photograph of a statue of Ben Milam on the grounds of the Milam County Courthouse. He stands with his hat raised in one hand, and he holds a rifle in the other. The base of the statue simply says "Milam".
Date:
October 8, 2006
Creator:
Belden, Dreanna L.
Object Type:
Photograph
System:
The Portal to Texas History
Ben Milam statue, Milam County Courthouse grounds
Photograph of a statue of Ben Milam on the grounds of the Milam County Courthouse. He stands with his hat raised in one hand, and he holds a rifle in the other. The base of the statue simply says "Milam".
Date:
October 8, 2006
Creator:
Belden, Dreanna L.
Object Type:
Photograph
System:
The Portal to Texas History
Ben Milam statue, Milam County Courthouse grounds
Photograph of a statue of Ben Milam on the grounds of the Milam County Courthouse, viewed from the side. He raises his hat in his right hand. The base of the statue reads, "Benjamin Rush Milam participated in the capture of Goliad October ninth, 1835, was killed in San Antonio, December seventh 1835 while commanding the Texas forces which later captured the town."
Date:
October 8, 2006
Creator:
Belden, Dreanna L.
Object Type:
Photograph
System:
The Portal to Texas History
Building in Milam County
Photograph of a building in Milam County. It was formerly a bank, and is now an attorneys office in Cameron. The building is white, with red doors and windows. Several columns support the overhang over to the front entrance.
Date:
October 8, 2006
Creator:
Belden, Dreanna L.
Object Type:
Photograph
System:
The Portal to Texas History
Church in Giddings
Photograph of a church in Giddings. It is a white wooden building with a tall steeple.
Date:
October 8, 2006
Creator:
Belden, Dreanna L.
Object Type:
Photograph
System:
The Portal to Texas History
Historic plaque, First Girl's Tomato Club in Texas
Photograph of a historic plaque in Cameron, Texas. It reads: "First Girl's Tomato Club in Texas. The first Girl's Tomato Clubs in Texas were organized in 1912 in Milam County to acquaint young women in rural areas with tomato production and canning techniques. At the request of the United States Department of Agriculture, Mrs. Edna Westbrook Trigg, a local high school principal, agreed to undertake the project. She organized eleven clubs throughout the county, with members ranging in age from ten to eighteen. A similar program for boys, the Corn Clubs, had been instituted in Jack County four years earlier. Each member of the Girl's Tomato Clubs was to produce a tomato crop on one-tenth of an acre of land and then was taught proper canning procedures. The girls exhibited their products at Milano, Rockdale, the 1913 State Fair in Dallas, and the Waco Cotton Palace. So successful were these exhibits that several of the girls started college education funds with the money they raised selling their goods. As the state's first rural girl's organization of its kind, the Tomato Clubs were forerunners of later programs, including 4-H, that were initiated under the supervision of the Texas Agricultural Extension Service. …
Date:
October 8, 2006
Creator:
Belden, Dreanna L.
Object Type:
Photograph
System:
The Portal to Texas History
Historic plaque, Lee County Courthouse
Photograph of a historic plaque in Giddings, Texas. It reads: "Lee County Courthouse. Designed by J.R. Gordon along lines similar to New York State Capitol and several buildings at Harvard University. Classified as Richardsonian Romanesque style, after the famous Louisiana-born architect Henry B. Richardson. Built by Sonnefield, Emmins and Abright of San Antonion, 1899. Replaced first courthouse, which burned 1897. Located on crest of divide separating the Colorado and Brazos River Basins. Recorded Texas Historic Landmark - 1968."
Date:
October 8, 2006
Creator:
Belden, Dreanna L.
Object Type:
Photograph
System:
The Portal to Texas History
Historic plaque, Milam County Courthouse
Photograph of a historic plaque in Cameron, Texas. It reads: "Milam County Courthouse. This is the fourth structure to serve as the Milam County Courthouse. The local Masonic Lodge laid the cornerstone for the building on July 4, 1891. Designed by architect A.O. Watson of Austin, the courthouse at one time feature a second empire roof and a cupola with a four-sided clock. The clock was removed and the roof altered in a 1938 renovation project by the Federal Works Progress Administration. As the center of county government for over a century, the courthouse stands as a significant part of Milam County history."
Date:
October 8, 2006
Creator:
Belden, Dreanna L.
Object Type:
Photograph
System:
The Portal to Texas History
Historic plaque, Milam County Jail of 1895
Photograph of a historic plaque in Cameron, Texas. It reads: "Milam County Jail of 1895. When the 1875 Milam County Jailhouse grew too crowded in the 1890s, it was removed to make room for larger facilities. In March 1895, the Milam County Commissioners awarded a contract to the Pauly Jail Building and Manufacturing Company of St. Louis, Missouri, for the construction of a larger prison. The company furnished all supplies, including St. Louis pressed bricks. County Judge Sam Streetman, who later served on the Texas Supreme Court, approved the contract, although he had preferred the use of local building materials. This structure, designed with Romanesque revival features and stone detailing above the windows, had three main floors and a "hanging tower" equipped with a trap door. The tower was never used for executions because most hangings took place outdoors. The first floor had ten rooms, three for storage and the remainder serving as a residence for the sheriff and his family. The second and third stories consisted of cell blocks for prisoners. In 1975 a new county jail was constructed, and the Commissioners Court turned this facility over to the Milam County Historical Commission. After renovation, it was opened as …
Date:
October 8, 2006
Creator:
Belden, Dreanna L.
Object Type:
Photograph
System:
The Portal to Texas History