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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
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 development planning and increased recovery of oil and gas from deltaic reservoirs. Surface exposures of ancient deltaic rocks provide a high-resolution view of variability. Insights gleaned from these exposures can be used to model analogous reservoirs, for which data is sparser. The Frontier Formation in central Wyoming provides an opportunity for high-resolution models. The same rocks exposed in the Tisdale anticline are productive in nearby oil fields. Kilometers of exposure are accessible, and bedding-plane exposures allow use of high-resolution ground-penetrating radar. This study combined geologic interpretations, maps, vertical sections, core data, and ground-penetrating radar to construct geostatistical and flow models. Strata-conforming grids were use to reproduce the observed geometries. A new Bayesian method integrates outcrop, core, and radar amplitude and phase data. The proposed method propagates measurement uncertainty and yields …
Date:
December 21, 2009
Creator:
White, Christopher D.
Object Type:
Report
System:
The UNT Digital Library
Bridging the Gap in the Chemical Thermodynamic Database for Nuclear Waste Repository: Studies of the Effect of Temperature on Actinide Complexation
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{Delta}S) that exceeds the increase in the enthalpy ({Delta}H) as the temperature is increased. These data bridge the gaps in the chemical thermodynamic database for nuclear waste repository where the temperature could remain significantly higher than 25 C for a long time after the closure of the repository.
Date:
December 21, 2009
Creator:
Rao, Linfeng; Tian, Guoxin; Xia, Yuanxian; Friese, Judah I.; Zanonato, PierLuigi & Di Bernardo, Plinio
Object Type:
Book
System:
The UNT Digital Library
Curvature of the Lanthanide Contraction: An Explanation
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 of radius with atomic number. Plotting the inverse of lanthanide ion radii (the observed distance minus the ligand size) as a function of effective nuclear charge gives very good linear fits for a variety of lanthanide complexes and materials. Parameters obtained from this fit are in excellent agreement with the calculated Slater shielding constant, k.
Date:
December 21, 2009
Creator:
Raymond, Kenneth; Wellman, Daniel; Sgarlata, Carmelo & Hill, Aru
Object Type:
Article
System:
The UNT Digital Library
Dye Sensitized Tandem Photovoltaic Cells
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 significant performance enhancement in the performance of dye sensitized solar cells can be obtained through the use of coupling inverse opal photonic crystals to the nanocrystalline dye sensitized solar cell. Lastly, a quick efficient method was developed to bond titanium foils to transparent conducting oxide substrates for anodization.
Date:
December 21, 2009
Creator:
Barber, Greg D.
Object Type:
Report
System:
The UNT Digital Library
Expected Performance of the LHC Synchrotron-Light Telescope (BSRT) and Abort-Gap Monitor (BSRA)
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 light for both applications, although both species pass through energy ranges in the ramp with small photon counts. Effects limiting image resolution are examined, including geometric optics, depth of field, and diffraction. The Report also considers recent suggestions that the undulator, intended to supplement the dipole for low energies, should not be ramped off at high energies and perhaps should not be used at all. We conclude that the undulator is essential at low energy for both species, but that it is possible to leave the undulator on at the cost of some blurring at intermediate energies.
Date:
December 21, 2009
Creator:
Fisher, Alan S.
Object Type:
Report
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Monday, December 21, 2009
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 21, 2009
Creator:
Pittman, Jerry & Wray, Kelly
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Improving Corrosion Behavior in SCWR, LFR and VHTR Reactor Materials by Formation of a Stable Oxide
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 fluorescence, and cross-sectional transmission electron microcopy on samples prepared using focused ion beam.
Date:
December 21, 2009
Creator:
Motta, Arthur T.; Comstock, Robert; Li, Ning; Allen, Todd & Was, Gary
Object Type:
Report
System:
The UNT Digital Library
Metal-Air Electric Vehicle Battery: Sustainable, High-Energy Density, Low-Cost Electrochemical Energy Storage – Metal-Air Ionic Liquid (MAIL) Batteries
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 batteries have long been considered impractical for EV applications because the water-based electrolytes inside would decompose the battery interior after just a few uses. Overcoming this traditional limitation, ASU’s new battery system could be both cheaper and safer than today’s Li-Ion batteries, store from 4-5 times more energy, and be recharged over 2,500 times.
Date:
December 21, 2009
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
National Security Letters: Proposed Amendments in the 111th Congress
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
Object Type:
Report
System:
The UNT Digital Library
Nuclear Recoil Cross Sections from Time-dependent Studies of Two-Photon Double Ionization of Helium
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
Object Type:
Article
System:
The UNT Digital Library
Oral History Interview with Ellsworth Handy, December 21, 2009
Transcript of an oral interview with Ellsworth Handy. Born in 1914, he entered the Army in August, 1940. He was assigned to the 1st Cavalry Headquarters, 29th Quartermaster Regiment. In early 1942 he was sent to the Pacific Theater. He describes being transported from San Francisco, California to Australia aboard the RMS Queen Elizabeth. He was responsible for running convoys of trucks in remote areas of the country. As Plans and Recreation Officer in Brisbane, he arranged entertainment in a local theater for soldiers on leave. He was sent to Milne Bay, New Guinea and the Philippines where he was responsible for trucking activities. He describes witnessing General MacArthur’s return to the Philippines. He shares an anecdote about a narrow escape during an air raid. He talks about not being rotated back to the U.S. as part of the normal two-year rotation. He left active duty in 1945. He served in the Reserves until 1981. The interview also contains information about his family during the Depression.
Date:
December 21, 2009
Creator:
Handy, Ellsworth
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with Ellsworth Handy, December 21, 2009
Transcript of an oral interview with Ellsworth Handy. Born in 1914, he entered the Army in August, 1940. He was assigned to the 1st Cavalry Headquarters, 29th Quartermaster Regiment. In early 1942 he was sent to the Pacific Theater. He describes being transported from San Francisco, California to Australia aboard the RMS Queen Elizabeth. He was responsible for running convoys of trucks in remote areas of the country. As Plans and Recreation Officer in Brisbane, he arranged entertainment in a local theater for soldiers on leave. He was sent to Milne Bay, New Guinea and the Philippines where he was responsible for trucking activities. He describes witnessing General MacArthur’s return to the Philippines. He shares an anecdote about a narrow escape during an air raid. He talks about not being rotated back to the U.S. as part of the normal two-year rotation. He left active duty in 1945. He served in the Reserves until 1981. The interview also contains information about his family during the Depression.
Date:
December 21, 2009
Creator:
Handy, Ellsworth
Object Type:
Text
System:
The Portal to Texas History
Products of the Benzene + O(3P) Reaction
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 dissociate to form the phenoxy radical and H atom, or undergo intersystem crossing onto a singlet surface, followed by a multiplicity of internal isomerizations, leading to several possible reaction products. In this work, we examined the product branching ratios of the reaction between benzene and O(3P) over the temperature range of 300 to 1000 K and pressure range of 1 to 10 Torr. The reactions were initiated by pulsed-laser photolysis of NO2 in the presence of benzene and helium buffer in a slow-flow reactor, and reaction products were identified by using the multiplexed chemical kinetics photoionization mass spectrometer operating at the Advanced Light Source (ALS) of Lawrence Berkeley National Laboratory. Phenol and phenoxy radical were detected and quantified. Cyclopentadiene and cyclopentadienyl radical were directly identified for the first …
Date:
December 21, 2009
Creator:
Taatjes, Craig A.; Osborn, David L.; Selby, Talitha M.; Meloni, Giovanni; Trevitt, Adam J.; Epifanovsky, Evgeny et al.
Object Type:
Article
System:
The UNT Digital Library
Rio Blanco, Colorado, Long-Term Hydrologic Monitoring Program Sampling and Analysis Results for 2009
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
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Semantic-Aware Automatic Parallelization of Modern Applications Using High-Level Abstractions
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 to the lack of research compilers that are readily able to recognize high-level object-oriented abstractions and leverage their associated semantics. In this paper, we use a source-to-source compiler infrastructure, ROSE, to explore compiler techniques to recognize high-level abstractions and to exploit their semantics for automatic parallelization. Several representative parallelization candidate kernels are used to study semantic-aware parallelization strategies for high-level abstractions, combined with extended compiler analyses. Preliminary results have shown that semantics of abstractions can help extend the applicability of automatic parallelization to modern applications and expose more opportunities to take advantage of multicore processors.
Date:
December 21, 2009
Creator:
Liao, C; Quinlan, D J; Willcock, J J & Panas, T
Object Type:
Article
System:
The UNT Digital Library
Spectrophotometric and Calorimetric Studies of Np(V) Complexation with Acetate at Variable Temperatures (T = 283 - 343 K)
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-driven. The enhancement of the complexation at elevated temperatures is primarily due to the increasingly larger entropy gain when the solvent molecules are released from the highly-ordered solvation spheres of NpO{sub 2}{sup +} and acetate to the bulk solvent where the degree of disorder is higher at higher temperatures.
Date:
December 21, 2009
Creator:
Rao, Linfeng; Tian, Guoxin; Srinivasan, Thandankorai G.; Zanonato, PierLuigi & Di Bernardo, Plinio
Object Type:
Article
System:
The UNT Digital Library
Spectroscopic signatures of proton transfer dynamics in the water dimer cation
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, 4772 (2009)] and the recent theoretical calculations by Cheng et al. [J. Phys. Chem. A 113 13779 (2009)]. A reduced dimensionality nuclear Hamiltonian was used to compute the ionization dynamics for both the ground state and first excited state of the cation. The dynamics show markedly different behavior and spectroscopic signatures depending on which state of the cation is accessed by the ionization. Ionization to the ground-state cation surface induces a hydrogen transfer which is complete within 50 femtoseconds, whereas ionization to the first excited state results in a much slower process.
Date:
December 21, 2009
Creator:
Kamarchik, Eugene; Kostko, Oleg; Bowman, Joel M.; Ahmed, Musahid & Krylov, Anna I.
Object Type:
Article
System:
The UNT Digital Library
Sweetwater Reporter (Sweetwater, Tex.), Vol. 112, No. 32, Ed. 1 Monday, December 21, 2009
Daily newspaper from Sweetwater, Texas that includes local, state, and national news along with advertising.
Date:
December 21, 2009
Creator:
Rodriguez, Tatiana
Object Type:
Newspaper
System:
The Portal to Texas History
Symmetry, Optical Properties and Thermodynamics of Neptunium(V) Complexes
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
Object Type:
Article
System:
The UNT Digital Library
Synchronization of multiple coupled rf-SQUID flux qubits
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.
Object Type:
Article
System:
The UNT Digital Library
[24-Hour Film Feast with Warrington Hudlin]
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
Creator:
Hudlin, Warrington & King, Curtis
Object Type:
Video
System:
The UNT Digital Library
[24-Hour Film Feast with Warrington Hudlin, 3]
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
Creator:
Warrington, Hudlin & King, Curtis
Object Type:
Video
System:
The UNT Digital Library
[24-Hour Film Feast with Warrington Hudlin tape 2]
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
Creator:
King, Curtis & Hudlin, Warrington
Object Type:
Video
System:
The UNT Digital Library
[Audience listens to Curtis King speak]
Photograph of the audience listening to Curtis King speak, taken at a 24-Hour FilmFeast event featuring Washington Hudlin, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
November 21, 2009
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library