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3D Sedimentological and Geophysical Studies of Clastic Reservoir Analogs: Facies Architecture, Reservoir Properties, and Flow Behavior Within Delta Front Facies Elements of the Cretaceous Wall Creek Member, Frontier Formation, Wyoming

Description: Significant volumes of oil and gas occur in reservoirs formed by ancient river deltas. This has implications for the spatial distribution of rock types and the variation of transport properties. A between mudstones and sandstones may form baffles that influence productivity and recovery efficiency. Diagenetic processes such as compaction, dissolution, and cementation can also alter flow properties. A better understanding of these properties and improved methods will allow improved reservoir dev… more
Date: December 21, 2009
Creator: White, Christopher D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Bridging the Gap in the Chemical Thermodynamic Database for Nuclear Waste Repository: Studies of the Effect of Temperature on Actinide Complexation

Description: Recent results of thermodynamic studies on the complexation of actinides (UO{sub 2}{sup 2+}, NpO{sub 2}{sup +} and Pu{sup 4+}) with F{sup -}, SO{sub 4}{sup 2-} and H{sub 2}PO{sub 4}{sup -}/HPO{sub 4}{sup 2-} at elevated temperatures are reviewed. The data indicate that, for all systems except the 1:1 complexation of Np(V) with HPO{sub 4}{sup 2-}, the complexation of actinides is enhanced by the increase in temperature. The enhancement is primarily due to the increase in the entropy term (T{Delt… more
Date: December 21, 2009
Creator: Rao, Linfeng; Tian, Guoxin; Xia, Yuanxian; Friese, Judah I.; Zanonato, PierLuigi & Di Bernardo, Plinio
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

Curvature of the Lanthanide Contraction: An Explanation

Description: A number of studies have shown that for isostructural series of the lanthanides (elements La through Lu), a plot of equivalent metal-ligand bond lengths versus atomic number differs significantly from linearity and can be better fit as a quadratic equation. However, for hydrogen type wave functions, it is the inverse of the average distance of the electron from the nucleus (an estimate of size) that varies linearly with effective nuclear charge. This generates an apparent quadratic dependence o… more
Date: December 21, 2009
Creator: Raymond, Kenneth; Wellman, Daniel; Sgarlata, Carmelo & Hill, Aru
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Dye Sensitized Tandem Photovoltaic Cells

Description: This work provided a new way to look at photoelectrochemical cells and their performance. Although thought of as low efficiency, a the internal efficiency of a 9% global efficiency dye sensitized solar cell is approximately equal to an 18% efficient silicon cell when each is compared to their useful spectral range. Other work undertaken with this contract also reported the first growth oriented titania and perovskite columns on a transparent conducting oxide. Other work has shown than significa… more
Date: December 21, 2009
Creator: Barber, Greg D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Expected Performance of the LHC Synchrotron-Light Telescope (BSRT) and Abort-Gap Monitor (BSRA)

Description: This Report presents calculations of the synchrotron light from proton and lead-ion beams in the LHC at all energies from 0.45 to 7 TeV. It computes the emission from three sources: the uniform-field region of the D3 dipole, the dipole's edge field, and the short undulator just upstream. Light emitted at or near visible wavelengths is assessed for making optical measurements of transverse beam profiles and for monitoring the emptiness of the abort gap in the fill pattern. There is sufficient li… more
Date: December 21, 2009
Creator: Fisher, Alan S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Improving Corrosion Behavior in SCWR, LFR and VHTR Reactor Materials by Formation of a Stable Oxide

Description: The objective of this study is to understand the influence of the alloy microstructure and composition on the formation of a stable, protective oxide in the environments relevant to the SCWR and LFR reactor concepts, as well as to the VHTR. It is proposed to use state-of-the art techniques to study the fine structure of these oxides to identify the structural differences between stable and unstable oxide layers. The techniques to be used are microbeam synchrotron radiation diffraction and fluor… more
Date: December 21, 2009
Creator: Motta, Arthur T.; Comstock, Robert; Li, Ning; Allen, Todd & Was, Gary
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Metal-Air Electric Vehicle Battery: Sustainable, High-Energy Density, Low-Cost Electrochemical Energy Storage – Metal-Air Ionic Liquid (MAIL) Batteries

Description: Broad Funding Opportunity Announcement Project: ASU is developing a new class of metal-air batteries. Metal-air batteries are promising for future generations of EVs because they use oxygen from the air as one of the battery’s main reactants, reducing the weight of the battery and freeing up more space to devote to energy storage than Li-Ion batteries. ASU technology uses Zinc as the active metal in the battery because it is more abundant and affordable than imported lithium. Metal-air batterie… more
Date: December 21, 2009
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

National Security Letters: Proposed Amendments in the 111th Congress

Description: This report includes a chart comparing the provisions of the bills and current law. It also reprints the text of the five National Security Letters (NSL) statutes as they now appear and as they appeared prior to amendment by the USA PATRIOT Act (to which form they would have returned under some of the bills).
Date: December 21, 2009
Creator: Doyle, Charles
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nuclear Recoil Cross Sections from Time-dependent Studies of Two-Photon Double Ionization of Helium

Description: We examine the sensitivity of nuclear recoil cross sections produced by two-photon double ionization of helium to the underlying triple differential cross sections (TDCS) used in their computation. We show that this sensitivity is greatest in the energy region just below the threshold for sequential double ionization. Accurate TDCS, extracted from non-perturbative solutions of the time-dependent Schroedinger equation, are used here in new computations of the nuclear recoil cross section.
Date: December 21, 2009
Creator: Horner, Daniel A.; Rescigno, Thomas N. & McCurdy, C. William
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Products of the Benzene + O(3P) Reaction

Description: The gas-phase reaction of benzene with O(3P) is of considerable interest for modeling of aromatic oxidation, and also because there exist fundamental questions concerning the prominence of intersystem crossing in the reaction. While its overall rate constant has been studied extensively, there are still significant uncertainties in the product distribution. The reaction proceeds mainly through the addition of the O atom to benzene, forming an initial triplet diradical adduct, which can either d… more
Date: December 21, 2009
Creator: Taatjes, Craig A.; Osborn, David L.; Selby, Talitha M.; Meloni, Giovanni; Trevitt, Adam J.; Epifanovsky, Evgeny et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Rio Blanco, Colorado, Long-Term Hydrologic Monitoring Program Sampling and Analysis Results for 2009

Description: The U.S. Department of Energy (DOE) Office of Legacy Management conducted annual sampling at the Rio Blanco, Colorado, Site, for the Long-Term Hydrologic Monitoring Program (LTHMP) on May 13 and 14, 2009. Samples were analyzed by the U.S. Environmental Protection Agency (EPA) Radiation&Indoor Environments National Laboratory in Las Vegas, Nevada. Samples were analyzed for gamma-emitting radionuclides by high-resolution gamma spectroscopy and tritium using the conventional and enriched methods.
Date: December 21, 2009
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Semantic-Aware Automatic Parallelization of Modern Applications Using High-Level Abstractions

Description: Automatic introduction of OpenMP for sequential applications has attracted significant attention recently because of the proliferation of multicore processors and the simplicity of using OpenMP to express parallelism for shared-memory systems. However, most previous research has only focused on C and Fortran applications operating on primitive data types. Modern applications using high-level abstractions, such as C++ STL containers and complex user-defined class types, are largely ignored due t… more
Date: December 21, 2009
Creator: Liao, C; Quinlan, D J; Willcock, J J & Panas, T
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Spectrophotometric and Calorimetric Studies of Np(V) Complexation with Acetate at Variable Temperatures (T = 283 - 343 K)

Description: Spectrophotometric titrations were performed to identify the Np(V)/acetate complex and determine the equilibrium constants at variable temperatures (T = 283 - 343 K) and at the ionic strength of 1.05 mol {center_dot} kg{sup -1}. The enthalpy of complexation at corresponding temperatures was determined by microcalorimetric titrations. Results show that the complexation of Np(V) with acetate is weak but strengthened as the temperature is increased. The complexation is endothermic and is entropy-d… more
Date: December 21, 2009
Creator: Rao, Linfeng; Tian, Guoxin; Srinivasan, Thandankorai G.; Zanonato, PierLuigi & Di Bernardo, Plinio
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Spectroscopic signatures of proton transfer dynamics in the water dimer cation

Description: Using full dimensional EOM-IP-CCSD/aug-cc-pVTZ potential energy surfaces, the photoelectron spectrum, vibrational structure, and ionization dynamics of the water dimer radical cation, (H2O)+2, were computed. We also report an experimental photoelectron spectrum which is derived from photoionization efficiency measurements and compares favorably with the theoretical spectrum. The vibrational structure is also compared with the recent experimental work of Gardenier et al. [J. Phys. Chem. A 113, 4… more
Date: December 21, 2009
Creator: Kamarchik, Eugene; Kostko, Oleg; Bowman, Joel M.; Ahmed, Musahid & Krylov, Anna I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Symmetry, Optical Properties and Thermodynamics of Neptunium(V) Complexes

Description: Recent results on the optical absorption and symmetry of the Np(V) complexes with dicarboxylate and diamide ligands are reviewed. The importance of recognizing the 'silent' feature of centrosymmetric Np(V) species in analyzing the absorption spectra and calculating the thermodynamic constants of Np(V) complexes is emphasized.
Date: December 21, 2009
Creator: Rao, Linfeng & Tian, Guoxin
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Synchronization of multiple coupled rf-SQUID flux qubits

Description: Article demonstrating a practical strategy for synchronizing the properties of compound Josephson junction (CJJ) radio frequency monitored superconducting quantum interference device (rf-SQUID) qubits on a multi-qubit chip.
Date: December 21, 2009
Creator: Harris, R.; Brito, F.; Berkley, A. J.; Johansson, J.; Johnson, M. W.; Lanting, T. et al.
Item Type: Refine your search to only Article
Partner: UNT College of Engineering
captions transcript

[24-Hour Film Feast with Warrington Hudlin]

Description: Video footage from The Black Academy of Arts and Letters recorded during a taping session of a "Filmfeast" weekend featuring director Warrington Hudlin. The footage features a live Q&A discussion with the director where he takes questions from the audience while going into detail about his early life and career.
Date: November 21, 2009
Duration: 41 minutes 49 seconds
Creator: Hudlin, Warrington & King, Curtis
Item Type: Refine your search to only Video
Location: 32.774281 -96.797546
Partner: UNT Libraries Special Collections
captions transcript

[24-Hour Film Feast with Warrington Hudlin, 3]

Description: Video footage from The Black Academy of Arts and Letters recorded during a taping session of a "Filmfeast" weekend featuring director Warrington Hudlin. The footage features a live Q&A discussion with the director where he takes questions from the audience while going into detail about his early life and career.
Date: November 21, 2009
Duration: 41 minutes 51 seconds
Creator: Warrington, Hudlin & King, Curtis
Item Type: Refine your search to only Video
Location: 32.774281 -96.797546
Partner: UNT Libraries Special Collections
captions transcript

[24-Hour Film Feast with Warrington Hudlin tape 2]

Description: Video footage from The Black Academy of Arts and Letters recorded during a taping session of a "Filmfeast" held on November 21st, 2009 at the Clarence Muse Café Theatre featuring director Warrington Hudlin. The footage features a live Q&A discussion with the director where he takes questions from the audience while going into detail about his early life and career. The tape also features content before and beginning at the 19:28 minute mark of the AIDS Life Walk.
Date: November 21, 2009
Duration: 41 minutes 12 seconds
Creator: King, Curtis & Hudlin, Warrington
Item Type: Refine your search to only Video
Location: 32.774281 -96.797546
Partner: UNT Libraries Special Collections
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