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NUCLEAR WASTE GLASSES CONTINUOUS MELTING AND BULK VITRIFICAITON
This contribution addresses various aspects of nuclear waste vitrification. Nuclear wastes have a variety of components and composition ranges. For each waste composition, the glass must be formulated to possess acceptable processing and product behavior defined in terms of physical and chemical properties that guarantee the glass can be easily made and resist environmental degradation. Glass formulation is facilitated by developing property-composition models, and the strategy of model development and application is reviewed. However, the large variability of waste compositions presents numerous additional challenges: insoluble solids and molten salts may segregate; foam may hinder heat transfer and slow down the process; molten salts may accumulate in container refractory walls; the glass on cooling may precipitate crystalline phases. These problems need targeted exploratory research. Examples of specific problems and their possible solutions are discussed.
Date:
March 24, 2008
Creator:
AA, KRUGER & PR, HRMA
Object Type:
Article
System:
The UNT Digital Library
On the occasion of the inauguration of Balenciaga and His Legacy: Haute Couture from the Texas Fashion Collection
Article and gallery of photographs from the gala premiere for the "Balenciaga and His Legacy: Haute Couture from the Texas Fashion Collection" exhibit held at the Meadows Museum in Dallas.
Date:
March 24, 2007
Creator:
Adams, Sharon
Object Type:
Article
System:
The UNT Digital Library
Top quark physics
The top quark, when it was finally discovered at Fermilab in 1995 completed the three-generation structure of the Standard Model (SM) and opened up the new field of top quark physics. Viewed as just another SM quark, the top quark appears to be a rather uninteresting species. Produced predominantly, in hadron-hadron collisions, through strong interactions, it decays rapidly without forming hadrons, and almost exclusively through the single mode t {r_arrow} Wb. The relevant CKM coupling V{sub tb} is already determined by the (three-generation) unitarity of the CKM matrix. Rare decays and CP violation are unmeasurable small in the SM. Yet the top quark is distinguished by its large mass, about 35 times larger than the mass of the next heavy quark, and intriguingly close to the scale of electroweak (EW) symmetry breaking. This unique property raises a number of interesting questions. Is the top quark mass generated by the Higgs mechanism as the SM predicts and is its mass related to the top-Higgs-Yukawa coupling? Or does it play an even more fundamental role in the EW symmetry breaking mechanism? If there are new particles lighter than the top quark, does the top quark decay into them? Could non-SM physics first …
Date:
March 24, 2000
Creator:
Ahmadov, A.; Azuelos, G.; Bauer, U.; Belyaev, A.; Berger, E. L.; Sullivan, Z. et al.
Object Type:
Article
System:
The UNT Digital Library
Timpson & Tenaha News (Timpson, Tex.), Vol. 20, No. 11, Ed. 1 Thursday, March 24, 2005
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
March 24, 2005
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Fluorescence Rise Time Measurements for High Temperature Fluorescence-Based Thermometry
Certain ceramic-like phosphor materials exhibit bright fluorescence with a pronounced temperature dependence over a range which spans the cryogenic to 1700 C, depending on the specific phosphor. To measure temperature, a surface, for instance a turbine blade, is coated with the material. An optical system, sometimes including optical fibers, conveys stimulating light and collects the emission for analysis. Either emission intensity or decay time may indicate temperature. Previously fielded tests have involved surfaces such as blades, vanes, pistons, in-take valves, sheets of galvanneal steel, etc. The fluorescent coatings may be applied to small parts via sputtering methods or to large areas by mixture with inorganic binders. Presented here are results characterizing fluorescence rise times as a means of determining temperature from ambient to 700 C for Y{sub 2}O{sub 3}:Eu.
Date:
March 24, 2005
Creator:
Allison, S.W.
Object Type:
Report
System:
The UNT Digital Library
Design and Status of the Visa II Experiment.
VISA II is the follow-up project to the successful Visible to Infrared SASE Amplifier (VISA) experiment at the Accelerator Test Facility (ATF) in Brookhaven National Lab (BNL). This paper will report the motivation for and status of the two main experiments associated with the VISA II program. One goal of VISA II is to perform an experimental study of the physics of a chirped beam SASE FEL at the upgraded facilities of the ATF. This requires a linearization of the transport line to preserve energy chirping of the electron beam at injection. The other planned project is a strong bunch compression experiment, where the electron bunch is compressed in the chicane, and the dispersive beamline transport, allowing studies of deep saturation.
Date:
March 24, 2004
Creator:
Andonian, G.
Object Type:
Article
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 105, No. 319, Ed. 1 Wednesday, March 24, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 24, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 298, Ed. 1 Thursday, March 24, 2005
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 24, 2005
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Master's Recital: 2008-03-24 - Ian Argys, jazz guitar
Access:
Use of this item is restricted to the UNT Community
Recital presented at the UNT College of Music Kenton Hall in partial fulfillment of the Master of Music (MM) degree.
Date:
March 24, 2008
Creator:
Argys, Ian
Object Type:
Sound
System:
The UNT Digital Library
Colorado New Energy Summit
Presentation by Dr. Dan Arvizu of NREL given at the Colorado New Energy Summit held March 24, 2007 in Denver, Colorado.
Date:
March 24, 2007
Creator:
Arvizu, D. E.
Object Type:
Presentation
System:
The UNT Digital Library
Nonlinear self-duality in even dimensions
We show that the Born-Infeld theory with n complex abelian gauge fields written in an auxiliary field formulation has a U(n, n) duality group. We conjecture the form of the Lagrangian obtained by eliminating the auxiliary fields and then introduce a new reality structure leading to a Born-Infeld theory with n real gauge fields and an Sp(2n, IR) duality symmetry. The real and complex constructions are extended to arbitrary even dimensions. The maximal noncompact duality group is U(n, n) for complex fields. For real fields the duality group is Sp(2n, IR) if half of the dimension of space-time is even and O(n, n) if it is odd. We also discuss duality under the maximal compact subgroup, which is the self-duality group of the theory obtained by fixing the expectation value of a scalar field. Supersymmetric versions of self-dual theories in four dimensions are also discussed.
Date:
March 24, 2000
Creator:
Aschieri, Paolo; Brace, Daniel; Morariu, Bogdan & Zumino, Bruno
Object Type:
Article
System:
The UNT Digital Library
Atmospheric Radiation Measurement Program Facilities Newsletter, February 2000
Monthly newsletter discussing news and activities related to the Atmospheric Radiation Measurement Program, articles about weather and atmospheric phenomena, and other related topics.
Date:
March 24, 2000
Creator:
Atmospheric Radiation Measurement Program (U.S.)
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Measurement of the tau- to eta pi-pi+pi-nu tau Branching Fraction and a Search for a Second-Class Current in the tau- to eta'(958)pi-nu tau Decay
The {tau}{sup -} {yields} {eta}{pi}{sup -}{pi}{sup +}{pi}{sup -}{nu}{sub {tau}} decay with the {eta} {yields} {gamma}{gamma} mode is studied using 384 fb{sup -1} of data collected by the BABAR detector. The branching fraction is measured to be (1.60 {+-} 0.05 {+-} 0.11) x 10{sup -4}. It is found that {tau}{sup -} {yields} f{sub 1}(1285){pi}{sup -} {nu}{sub {tau}} {yields} {eta}{pi}{sup -}{pi}{sup +}{pi}{sup -}{nu}{sub {tau}} is the dominant decay mode with a branching fraction of (1.11 {+-} 0.06 {+-} 0.05) x 10{sup -4}. The first error on the branching fractions is statistical and the second systematic. In addition, a 90% confidence level upper limit on the branching fraction of the {tau}{sup -} {yields} {eta}{prime}(958){pi}{sup -}{nu}{sub {tau}} decay is measured to be 7.2 x 10{sup -6}. This last decay proceeds through a second-class current and is expected to be forbidden in the limit of isospin symmetry.
Date:
March 24, 2008
Creator:
Aubert, B.; Bona, M.; Boutigny, D.; Karyotakis, Y.; Lees, J. P.; Poireau, V. et al.
Object Type:
Article
System:
The UNT Digital Library
Requirements Analysis Study for Master Pump Shutdown System Project Development Specification [SEC 1 and 2]
This document has been updated during the definitive design portion of the first phase of the W-314 Project to capture additional software requirements and is planned to be updated during the second phase of the W-314 Project to cover the second phase of the Project's scope. The objective is to provide requirement traceability by recording the analysis/basis for the functional descriptions of the master pump shutdown system. This document identifies the sources of the requirements and/or how these were derived. Each requirement is validated either by quoting the source or an analysis process involving the required functionality, performance characteristics, operations input or engineering judgment.
Date:
March 24, 2000
Creator:
BEVINS, R.R.
Object Type:
Report
System:
The UNT Digital Library
Faculty Recital: 2004-03-24 - Tony Baker, trombones and Steven Harlos, piano
Access:
Use of this item is restricted to the UNT Community
Recital performed at UNT School of Music Recital Hall on March 24, 2004 at 8:00 pm.
Date:
March 24, 2004
Creator:
Baker, Tony (Trombonist); Harlos, Steven, 1953-; Soph, Ed; Murphy, John P. (John Patrick) & Seaton, Lynn
Object Type:
Sound
System:
The UNT Digital Library
Correlates of Stress in People Living with HIV/AIDS
This poster suggests that a biopsychosocial approach may be beneficial to people living with HIV/AIDS to reduce stress.
Date:
March 24, 2004
Creator:
Ballinger, Julie & Vosvick, Mark A.
Object Type:
Poster
System:
The UNT Digital Library
Actinic inspection of multilayer defects on EUV masks
The production of defect-free mask blanks, and the development of techniques for inspecting and qualifying EUV mask blanks, remains a key challenge for EUV lithography. In order to ensure a reliable supply of defect-free mask blanks, it is necessary to develop techniques to reliably and accurately detect defects on un-patterned mask blanks. These inspection tools must be able to accurately detect all critical defects whilst simultaneously having the minimum possible false-positive detection rate. There continues to be improvement in high-speed non-actinic mask blank inspection tools, and it is anticipated that these tools can and will be used by industry to qualify EUV mask blanks. However, the outstanding question remains one of validating that non-actinic inspection techniques are capable of detecting all printable EUV defects. To qualify the performance of non-actinic inspection tools, a unique dual-mode EUV mask inspection system has been installed at the Advanced Light Source (ALS) synchrotron at Lawrence Berkeley National Laboratory. In high-speed inspection mode, whole mask blanks are scanned for defects using 13.5-nm wavelength light to identify and map all locations on the mask that scatter a significant amount of EUV light. In imaging, or defect review mode, a zone plate is placed in the reflected …
Date:
March 24, 2005
Creator:
Barty, A.; Liu, Y.; Gullikson, E.; Taylor, J. S. & Wood, O.
Object Type:
Article
System:
The UNT Digital Library
The Grandview Tribune (Grandview, Tex.), Vol. 111, No. 29, Ed. 1 Friday, March 24, 2006
Weekly newspaper from Grandview, Texas that includes local, state, and national news along with advertising.
Date:
March 24, 2006
Creator:
Beck-Adams, Candie
Object Type:
Newspaper
System:
The Portal to Texas History
Mad Cow Disease: Agricultural Issues for Congress
This report provides information on how most of the countries banned United States beef after the first report of Bovine Spongiform Encephalopathy (BSE) in a Canadian-born cow after the December 2003 U.S. report. This explains all the steps USDA has taken to reduce the positive cases of BSE by starting special programs. Updated March 24, 2005.
Date:
March 24, 2005
Creator:
Becker, Geoffrey S.
Object Type:
Report
System:
The UNT Digital Library
Fuel Transformer Solid Oxide Fuel Cell Progress Report
The following report documents the technical approach and conclusions made by Acumentrics Corporation during latest budget period toward the development of a low cost 10kW tubular SOFC power system. The present program, guided under direction from the National Energy Technology Laboratory of the US DOE, is a nine-year cost shared Cooperative Agreement totaling close to $74M funded both by the US DOE as well as Acumentrics Corporation and its partners. The latest budget period ran from July of 2004 through January 2004. Work was focused on cell technology enhancements as well as BOP and power electronics improvements and overall system design. Significant progress was made in increasing cell power enhancements as well as decreasing material cost in a drive to meet the SECA cost targets. The following report documents these accomplishments in detail as well as the lay out plans for further progress in next budget period.
Date:
March 24, 2005
Creator:
Bessette, Norman; Schmidt, Douglas S.; Rawson, Jolyon; Allfather, Lars & Litka, Anthony
Object Type:
Report
System:
The UNT Digital Library
Soil Stabilization and Revegetation at the INEEL Recommendations for Improvement
Soil stabilization for the INEEL Stormwater Pollution Prevention Plan (SWPPP) has mostly been by revegetation, but has experienced only limited success. The purpose of this report is to discuss issues associated with revegetation failures and to explore possible remedies.
Date:
March 24, 2003
Creator:
Blew, R. D.; Jackson, M. R. & Forman, A. D.
Object Type:
Report
System:
The UNT Digital Library
Oral History Interview with Annie May Web, March 24, 2001
Interview with Annie (Amy) May Webb discussing her husband's service and her experiences on the homefront during World War II. She describes delivering word of the birth of their daughter to her husband while he was aboard the USS Bennington serving with VMF-112.
Date:
March 24, 2001
Creator:
Bloomfield, Vivian & Webb, Annie May
Object Type:
Sound
System:
The Portal to Texas History
[Letter from Gary Borders to Barry Bedlan, March 24, 2008]
Letter from Gary Borders, President TDNA, to Barry Bedlan, Assistant Chief of Bureau, Associated Press, on March 24, 2008. The letter is in regards on the behalf of the officers and directors of TDNA thanking Bedlan for his participation in the 87th Annual Meeting.
Date:
March 24, 2008
Creator:
Borders, Gary
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Gary Borders to Belinda Gaudet, March 24, 2008]
Letter from Gary Borders, President of TDNA, to Belinda Gaudet, Executive Vice President / General manager of the Austin American-Statesmen on March 24, 2008. The letter congratulates Gaudet on her newspaper winning the Bright Idea Award presented at TDNA's 87th Annual Meeting.
Date:
March 24, 2008
Creator:
Borders, Gary
Object Type:
Letter
System:
The UNT Digital Library