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Electric Utility Regulatory Reform: Issues for the 109th Congress
This report discusses regulation issues affecting electricity today. Comprehensive electricity legislation may involve several components: Public Utility Holding Company Act (PUHCA) reform, PURPA's requirement that utilities purchase power from qualifying facilities (QFs), and reliability.
Date:
April 21, 2005
Creator:
Abel, Amy
Object Type:
Report
System:
The UNT Digital Library
Ensemble: 2001-04-21 - African Cultural Festival
Access:
Use of this item is restricted to the UNT Community
Ensemble performance at the UNT College of Music Winspear Hall.
Date:
April 21, 2001
Creator:
African Cultural Festival
Object Type:
Sound
System:
The UNT Digital Library
Separation of Carbon Dioxide from Flue Gas Using Ion Pumping
We are developing a new way of separating carbon dioxide from flue gas based on ionic pumping of carbonate ions dissolved in water. Instead of relying on large temperature or pressure changes to remove carbon dioxide from solvent used to absorb it from flue gas, the ion pump increases the concentration of dissolved carbonate ion in solution. This increases the overlying vapor pressure of carbon dioxide gas, which can be removed from the downstream side of the ion pump as a nearly pure gas. This novel approach to increasing the concentration of the extracted gas permits new approaches to treating flue gas. The slightly basic water used as the extraction medium is impervious to trace acid gases that destroy existing solvents, and no pre-separation is necessary. The simple, robust nature of the process lends itself to small separation plants. Although the energy cost of the ion pump is significant, we anticipate that it will be compete favorably with the current 35% energy penalty of chemical stripping systems in use at power plants. There is the distinct possibility that this simple method could be significantly more efficient than existing processes.
Date:
April 21, 2006
Creator:
Aines, R.; Bourcier, W. L. & Johnson, M. R.
Object Type:
Article
System:
The UNT Digital Library
Timpson & Tenaha News (Timpson, Tex.), Vol. 20, No. 15, Ed. 1 Thursday, April 21, 2005
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
April 21, 2005
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Waste Package Related Impacts of Plutonium Disposition Waste Form Geologic Repository
This report provides a comprehensive summary of the waste package (WP) related impacts of the Plutonium Disposition waste forms that are being developed and evaluated by the Office of Fissile Materials Disposition of the DOE. These waste forms are of two distinct types. One type is mixed oxide spent nuclear fuel (MOX SNF), which would be received from one or more commercial nuclear reactors using MOX fuel prepared from surplus weapons plutonium. The other type is plutonium immobilized in ceramic disks, which would be embedded in HLW glass in the standard HLW glass disposal canister. The ceramic disks would occupy approximately 12% of the HLW canister volume, while most of the remaining 88% of the volume would be occupied by HLW glass. The studies reported here have been ongoing for five years, and much of the work has been presented in one of four previous annual reports. This is the first of the reports to be subject to requirements of the Office of Civilian Radioactive Waste Management Quality Assurance Requirements (DOE 1998a and CRWMS M&O 1999p). This compliance is necessary in order that the results presented here be applicable to the major upcoming OCRWM project statutory and licensing documents: the …
Date:
April 21, 2000
Creator:
Alsaed, A. A.
Object Type:
Report
System:
The UNT Digital Library
Charm Spectroscopy at BaBar
In this note we present results on charmed hadron decays recently obtained from data recorded with the BABAR detector at the Stanford Linear Accelerator Center (SLAC) PEP-II B-Factory.
Date:
April 21, 2006
Creator:
Altenburg, D. & U., /Dortmund
Object Type:
Article
System:
The UNT Digital Library
Fluorine for Hydrogen Exchange in the Hydrofluorobenzene Derivatives C6HxF(6-x), where x = 2, 3, 4 and 5 by Monomeric [1,2,4-(Me3C)3C5H2]2CeH; The Solid State Isomerization of [1,2,4-(Me3C)3C5H2]2Ce(2,3,4,5-C6HF4) to [1,2,4-(Me3C)3C5H2]2Ce(2,3,4,6-C6HF4)
The reaction between monomeric bis(1,2,4-tri-t-butylcyclopentadienyl)cerium hydride, Cp'2CeH, and several hydrofluorobenzene derivatives is described. The aryl derivatives that are the primary products, Cp'2Ce(C6H5-xFx) where x = 1,2,3,4, are thermally stable enough to be isolated in only two cases, since all of them decompose at different rates to Cp'2CeF and a fluorobenzyne; the latter is trapped by either solvent when C6D6 is used or by a Cp'H ring when C6D12 is the solvent. The trapped products are identified by GCMS analysis after hydrolysis. The aryl derivatives are generated cleanly by reaction of the metallacycle, Cp'((Me3C)2C5H2C(Me2)CH2)Ce, with a hydrofluorobenzene and the resulting arylcerium products, in each case, are identified by their 1H and 19F NMR spectra at 20oC. The stereochemical principle that evolves from these studies is that the thermodynamic isomer is the one in which the CeC bond is flanked by two ortho-CF bonds. This orientation is suggested to arise from the negative charge that is localized on the ipso-carbon atom due to Co(delta+)-Fo(delta-) polarization. The preferred regioisomer is determined by thermodynamic rather than kinetic effects; this is illustrated by the quantitative, irreversible solid-state conversion at 25oC over two months of Cp'2Ce(2,3,4,5-C6HF4) to Cp'2Ce(2,3,4,6-C6HF4), an isomerization that involves a CeC(ipso) for C(ortho)F …
Date:
April 21, 2008
Creator:
Andersen, Richard; Werkema, Evan L. & Andersen, Richard A.
Object Type:
Article
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 106, No. 18, Ed. 1 Wednesday, April 21, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 21, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 107, No. 18, Ed. 1 Thursday, April 21, 2005
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 21, 2005
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Graduate Artist Certificate Recital: 2007-04-21 – Emily Aquin, violin
Recital presented at the UNT College of Music Concert Hall in partial fulfillment of the Graduate Artist Certificate in Music Performance.
Date:
April 21, 2007
Creator:
Aquin, Emily
Object Type:
Sound
System:
The UNT Digital Library
Oklahoma City National Memorial and Museum
Photograph of a scene at the Oklahoma City National Memorial and Museum, the Murrah Federal Building bombing site.
Date:
April 21, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oklahoma City National Memorial and Museum
Photograph of a scene at the Oklahoma City National Memorial and Museum, the Murrah Federal Building bombing site.
Date:
April 21, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oklahoma City National Memorial and Museum
Photograph of a scene at the Oklahoma City National Memorial and Museum, the Murrah Federal Building bombing site.
Date:
April 21, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oklahoma City National Memorial and Museum
Photograph of a scene at the Oklahoma City National Memorial and Museum, the Murrah Federal Building bombing site.
Date:
April 21, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oklahoma City National Memorial and Museum
Photograph of a scene at the Oklahoma City National Memorial and Museum, the Murrah Federal Building bombing site.
Date:
April 21, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oklahoma City National Memorial and Museum
Photograph of a scene at the Oklahoma City National Memorial and Museum, the Murrah Federal Building bombing site.
Date:
April 21, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oklahoma City National Memorial and Museum
Photograph of a scene at the Oklahoma City National Memorial and Museum, the Murrah Federal Building bombing site.
Date:
April 21, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oklahoma City National Memorial and Museum
Photograph of a scene at the Oklahoma City National Memorial and Museum, the Murrah Federal Building bombing site.
Date:
April 21, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oklahoma City National Memorial and Museum
Photograph of a scene at the Oklahoma City National Memorial and Museum, the Murrah Federal Building bombing site.
Date:
April 21, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oklahoma City National Memorial and Museum
Photograph of a scene at the Oklahoma City National Memorial and Museum, the Murrah Federal Building bombing site.
Date:
April 21, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oklahoma City National Memorial and Museum
Photograph of a scene at the Oklahoma City National Memorial and Museum, the Murrah Federal Building bombing site.
Date:
April 21, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oklahoma City National Memorial and Museum
Photograph of a scene at the Oklahoma City National Memorial and Museum, the Murrah Federal Building bombing site.
Date:
April 21, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oklahoma City National Memorial and Museum
Photograph of a scene at the Oklahoma City National Memorial and Museum, the Murrah Federal Building bombing site.
Date:
April 21, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Oklahoma City National Memorial and Museum
Photograph of a scene at the Oklahoma City National Memorial and Museum, the Murrah Federal Building bombing site.
Date:
April 21, 2000
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History