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Complexants for actinide element coordination and immobilization
The goal of this project is to develop inorganic metal oxide clusters known as polyoxoanions (POAs) as complexants for the immobilization of actinide (An) ions from high-level waste (HLW). A diverse array of rugged isopolyoxoanions, [M{sub x}O{sub y}]{sup z{minus}}, and heteropolyoxoanions, [X{sub a}M{sub b}O{sub c}]{sup d{minus}}, comprised of M = V, Mo, W and X = Si, P polyhedra will be investigated for their ability to incarcerate An ions. The research combines two objectives--An-POA coordination and An-POA containment. The first involves the synthesis, isolation, and characterization of POAs that can selectively bind An ions to form stable An-POA complexes in alkaline and acidic solutions. The second involves investigations of the thermochemistry of the An-POA complexes under vitrification conditions germane to the formation of proposed HLW forms, such as borosilicate glass. The approach is envisioned to provide two levels of An encapsulation for maximum stability and durability as well as the potential to incorporate higher levels of An ions (particularly Pu) in waste forms than now possible. Such versatility bodes well for the potential application of POAs as An complexants in technology of significance to the environmental management of HLW. This report summarizes work performed since the commencement of the project …
Date:
March 14, 2000
Creator:
Antonio, M.R.; Soderholm, L.; Williams, C.W. & Francesconi, L.C.
Object Type:
Report
System:
The UNT Digital Library
The Individuals with Disabilities Education Act (IDEA): Overview and Selected Issues
This report provides a brief overview of the act with particular attention paid to issues of recent congressional concern, such as funding and private school enrollment.
Date:
January 14, 2008
Creator:
Apling, Richard N. & Jones, Nancy L.
Object Type:
Report
System:
The UNT Digital Library
Charm Results on CP Violation and Mixing
The most recent results on CP violation and mixing in the charm system are reviewed as a guide to the future. While no surprising results are reported so far, charm provides a unique window to physics beyond the Standard Model. The results reported here come from four sources, ALEPH at LEP, E791 and FOCUS/E831 at Fermilab, and CLEO II.V at CESR. Results beyond these sources may be expected as a byproduct of B-motivated experiments.
Date:
March 14, 2000
Creator:
Appel, J. A.
Object Type:
Article
System:
The UNT Digital Library
Classroom HVAC: Improving ventilation and saving energy -- field study plan
The primary goals of this research effort are to develop, evaluate, and demonstrate a very practical HVAC system for classrooms that consistently provides classrooms (CRs) with the quantity of ventilation in current minimum standards, while saving energy, and reducing HVAC-related noise levels. This research is motivated by the public benefits of energy efficiency, evidence that many CRs are under-ventilated, and public concerns about indoor environmental quality in CRs. This document provides a summary of the detailed plans developed for the field study that will take place in 2005 to evaluate the energy and IAQ performance of a new classroom HVAC technology. The field study will include measurements of HVAC energy use, ventilation rates, and IEQ conditions in 10 classrooms with the new HVAC technology and in six control classrooms with a standard HVAC system. Energy use and many IEQ parameters will be monitored continuously, while other IEQ measurements will be will be performed seasonally. Continuously monitored data will be remotely accessed via a LonWorks network. Instrument calibration plans that vary with the type of instrumentation used are established. Statistical tests will be employed to compare energy use and IEQ conditions with the new and standard HVAC systems. Strengths of this …
Date:
October 14, 2004
Creator:
Apte, Michael G.; Faulkner, David; Hodgson, Alfred T. & Sullivan, Douglas P.
Object Type:
Report
System:
The UNT Digital Library
Letter report - parametric studies on the use of in situ formed magnetite for the removal of Sr and actinides from tank waste at the Savannah River site.
This report discusses the experimental program conducted at ANL to study the performance of in-situ-formed magnetite for the removal of Sr, Pu, Np, U, Am, and Cs from the Savannah River Site (SRS) tank waste. The boundaries for the experimental work were defined based on the operational envelope developed earlier in collaboration with SRS. In situ formed ''magnetite'' is actually a mixture of Fe(II) and Fe(III) oxides and hydroxides, including magnetite. Decontamination factor (DF) values were measured for both magnetite and monosodium titanate (MST). Magnetite DF values were found to be superior to MST for all isotopes studied. DF values for Pu, Np, and Sr, achieved within 30 minutes of magnetite formation were orders of magnitude larger than the needed values. DF values for U and Am were less than the former three but still acceptable, and greater than MST. DF values for Cs were very low. Conditions were found under which magnetite filtered rapidly and faster than MST. Further tests are needed to make concrete conclusions on the magnetite performance relative to MST in a cross-flow filtration setup.
Date:
April 14, 2003
Creator:
Arafat, H. A.; Aase, S. B.; Bakel, A. J.; Bowers, D. L.; Gelis, A. V.; Regalbuto, M. C. et al.
Object Type:
Report
System:
The UNT Digital Library
Locomotive Emission and Engine Idle Reduction Technology Demonstration Project
In response to a United States Department of Energy (DOE) solicitation, the Maryland Energy Administration (MEA), in partnership with CSX Transportation, Inc. (CSXT), submitted a proposal to DOE to support the demonstration of Auxiliary Power Unit (APU) technology on fifty-six CSXT locomotives. The project purpose was to demonstrate the idle fuel savings, the Nitrous Oxide (NOX) emissions reduction and the noise reduction capabilities of the APU. Fifty-six CSXT Baltimore Division locomotives were equipped with APUs, Engine Run Managers (ERM) and communications equipment to permit GPS tracking and data collection from the locomotives. Throughout the report there is mention of the percent time spent in the State of Maryland. The fifty-six locomotives spent most of their time inside the borders of Maryland and some spent all their time inside the state borders. Usually when a locomotive traveled beyond the Maryland State border it was into an adjoining state. They were divided into four groups according to assignment: (1) Power Unit/Switcher Mate units, (2) Remote Control units, (3) SD50 Pusher units and (4) Other units. The primary data of interest were idle data plus the status of the locomotive--stationary or moving. Also collected were main engine off, idling or working. Idle data …
Date:
March 14, 2005
Creator:
Archer, John R.
Object Type:
Report
System:
The UNT Digital Library
American Indian Exposition
Photograph of a scene during the American Indian Exposition, at the Caddo County Fairgrounds.
Date:
August 14, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
American Indian Exposition
Photograph of a scene during the American Indian Exposition, at the Caddo County Fairgrounds.
Date:
August 14, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
American Indian Exposition
Photograph of a scene during the American Indian Exposition, at the Caddo County Fairgrounds.
Date:
August 14, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
American Indian Exposition
Photograph of a scene during the American Indian Exposition, at the Caddo County Fairgrounds.
Date:
August 14, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
American Indian Exposition
Photograph of a scene during the American Indian Exposition, at the Caddo County Fairgrounds.
Date:
August 14, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
American Indian Exposition
Photograph of a scene during the American Indian Exposition, at the Caddo County Fairgrounds.
Date:
August 14, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
American Indian Exposition
Photograph of a scene during the American Indian Exposition, at the Caddo County Fairgrounds.
Date:
August 14, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
American Indian Exposition
Photograph of a scene during the American Indian Exposition, at the Caddo County Fairgrounds.
Date:
August 14, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
American Indian Exposition
Photograph of a scene during the American Indian Exposition, at the Caddo County Fairgrounds.
Date:
August 14, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
American Indian Exposition
Photograph of a scene during the American Indian Exposition, at the Caddo County Fairgrounds.
Date:
August 14, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
American Indian Exposition
Photograph of a scene during the American Indian Exposition, at the Caddo County Fairgrounds.
Date:
August 14, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
American Indian Exposition
Photograph of a scene during the American Indian Exposition, at the Caddo County Fairgrounds.
Date:
August 14, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
American Indian Exposition
Photograph of a scene during the American Indian Exposition, at the Caddo County Fairgrounds.
Date:
August 14, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
American Indian Exposition
Photograph of a scene during the American Indian Exposition, at the Caddo County Fairgrounds.
Date:
August 14, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
American Indian Exposition
Photograph of a scene during the American Indian Exposition, at the Caddo County Fairgrounds.
Date:
August 14, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
American Indian Exposition
Photograph of a scene during the American Indian Exposition, at the Caddo County Fairgrounds.
Date:
August 14, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
American Indian Exposition
Photograph of a scene during the American Indian Exposition, at the Caddo County Fairgrounds.
Date:
August 14, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
American Indian Exposition
Photograph of a scene during the American Indian Exposition, at the Caddo County Fairgrounds.
Date:
August 14, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History