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2008 B20 Survey Results
Describes results of a sample survey of the quality of B20, a biodiesel blend, collected from U.S. public pumps and fleets as part of a joint effort by NREL, the NBB, and engine manufacturers.
Date:
February 2, 2009
Creator:
Alleman, T. L. & McCormick, R. L.
Object Type:
Presentation
System:
The UNT Digital Library
Activity Coefficients at Infinite Dilution of Organic Compounds in Trihexyl(tetradecyl)phosphonium Bis(trifluoromethylsulfonyl)imide Using Inverse Gas Chromatography
Article on activity coefficients at infinite dilution of organic compounds in trihexyl(tetradecyl)phosphonium Bis(trifluoromethylsulfonyl)imide using inverse gas chromatography.
Date:
February 2, 2009
Creator:
Revelli, Anne-Laure; Sprunger, Laura M.; Gibbs, Jennifer; Acree, William E. (William Eugene); Baker, Gary A. & Mutelet, Fabrice
Object Type:
Article
System:
The UNT Digital Library
An analytical model of nonproportional scintillator light yield in terms of recombination rates
This report talks about An analytical model of nonproportional scintillator light yield in terms of recombination rates
Date:
February 2, 2009
Creator:
Bizarri, Gregory; Moses, William W.; Singh, Jai; Williams, Richard T. & Vasil'ev, Andrey N.
Object Type:
Article
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 89, No. 33, Ed. 1 Monday, February 2, 2009
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
February 2, 2009
Creator:
Clements, Clifford E.
Object Type:
Newspaper
System:
The Portal to Texas History
Carbon contamination of extreme ultraviolet (EUV) mask and its effect on imaging
Carbon contamination of extreme ultraviolet (EUV) masks and its effect on imaging is a significant issue due to lowered throughput and potential effects on imaging performance. In this work, a series of carbon contamination experiments were performed on a patterned EUV mask. Contaminated features were then inspected with a reticle scanning electron microscope (SEM) and printed with the SEMA TECH Berkeley Microfield-Exposure tool (MET) [1]. In addition, the mask was analyzed using the SEMA TECH Berkeley Actinic-Inspection tool (AIT) [2] to determine the effect of carbon contamination on the absorbing features and printing performance. To understand the contamination topography, simulations were performed based on calculated aerial images and resist parameters. With the knowledge of the topography, simulations were then used to predict the effect of other thicknesses of the contamination layer, as well as the imaging performance on printed features.
Date:
February 2, 2009
Creator:
Fan, Yu-Jen; Yankulin, Leonid; Antohe, Alin; Garg, Rashi; Thomas, Petros; Mbanaso, Chimaobi et al.
Object Type:
Article
System:
The UNT Digital Library
Cerocene Revisited: The Electronic Structure of and Interconversion Between Ce2(C8H8)3 and Ce(C8H8)2
New synthetic procedures for the preparation of Ce(cot)2, cerocene, from [Li(thf)4][Ce(cot)2], and Ce2(cot)3 in high yield and purity are reported. Heating solid Ce(cot)2 yields Ce2(cot)3 and COT while heating Ce2(cot)3 with an excess of COT in C6D6 to 65oC over four months yields Ce(cot)2. The solid state magnetic susceptibility of these three organocerium compounds shows that Ce(cot)2 behaves as a TIP (temperature independent paramagnet) over the temperature range of 5-300 K, while that of Ce2(cot)3 shows that the spin carriers are antiferromagnetically coupled below 10 K; above 10 K, the individual spins are uncorrelated, and [Ce(cot)2]- behaves as an isolated f1 paramagnet. The EPR at 1.5K for Ce2(cot)3 and [Ce(cot)2]- have ground state of MJ= +- 1/2. The LIII edge XANES of Ce(cot)2 (Booth, C.H.; Walter, M.D.; Daniel, M.; Lukens, W.W., Andersen, R.A., Phys. Rev. Lett. 2005, 95, 267202) and 2Ce2(cot)3 over 30-500 K are reported; the Ce(cot)2 XANES spectra show Ce(III) and Ce(IV) signatures up to a temperature of approximately 500 K, whereupon the Ce(IV) signature disappears, consistent with the thermal behavior observed in the melting experiment. The EXAFS of Ce(cot)2 and Ce2(cot)3 are reported at 30 K; the agreement between the molecular parameters for Ce(cot)2 derived from EXAFS …
Date:
February 2, 2009
Creator:
Walter, Marc D.; Booth, Corwin H.; Lukens, Wayne W. & Andersen, Richard A.
Object Type:
Article
System:
The UNT Digital Library
The Cost of Transmission for Wind Energy: A Review of Transmission Planning Studies
The rapid development of wind power that the United States has experienced over the last several years has been coupled with a growing concern that wind development will require substantial additions to the nation's transmission infrastructure. Transmission is particularly important for wind power due to the locational dependence of wind resources, the relatively low capacity factor of wind plants, and the mismatch between the short lead time to build a new wind project and the longer lead time often needed to plan, permit, and construct transmission. It is clear that institutional issues related to transmission planning, siting, and cost allocation will pose major obstacles to accelerated wind power deployment, but also of concern is the potential cost of this infrastructure build out. Simply put, how much extra cost will society bear to deliver wind power to load centers? Without an answer to this question, there can be no consensus on whether or not the cost of developing transmission for wind will be a major barrier to further wind deployment, or whether the institutional barriers to transmission expansion are likely to be of more immediate concern. In this report, we review a sample of 40 detailed transmission studies that have included …
Date:
February 2, 2009
Creator:
Mills, Andrew D.; Wiser, Ryan & Porter, Kevin
Object Type:
Report
System:
The UNT Digital Library
Doctoral Recital: 2009-02-02 - Yoonjoon Yang, soprano
Recital presented at the UNT College of Music Recital Hall in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date:
February 2, 2009
Creator:
Yang, Yoonjoo
Object Type:
Sound
System:
The UNT Digital Library
EMSL Quarterly Highlights Report: 1st Quarter, Fiscal Year 2009
The EMSL Quarterly Highlights Report covers the science, staff and user recognition, and publication activities that occurred during the 1st quarter (October 2008 - December 2008) of Fiscal Year 2009.
Date:
February 2, 2009
Creator:
Showalter, Mary Ann; Kathmann, Loel E. & Manke, Kristin L.
Object Type:
Report
System:
The UNT Digital Library
Excitation Function for the 74Se(18O,p3n) Reaction
The 74Se(18O,p3n)88gNb excitation function was measured and a maximum cross section of 495+-5 mb was observed at and 18O energy of 74.0 MeV. Experimental cross sections were compared to theoretical calculations using the computer code ALICE-91 and the values were found to be in good agreement. The half life of 88gNb was determined to be around 14.56+-0.11 min.
Date:
February 2, 2009
Creator:
Gates, Jacklyn; Dragojevic, Irena; Dvorak, Jan; Ellison, Paul; Gregorich, Kenneth; Stavsetra, Liv et al.
Object Type:
Article
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Monday, February 2, 2009
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 2, 2009
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Family Law: Congress's Authority to Legislate on Domestic Relations Questions
This report discusses the extent to which Congress is constitutionally authorized to legislate on family law questions, and includes examples of present laws utilizing the various approaches available in this area.
Date:
February 2, 2009
Creator:
Smith, Alison M.
Object Type:
Report
System:
The UNT Digital Library
Federal Information System Controls Audit Manual (FISCAM)
Guidance issued by the Government Accountability Office with an abstract that begins "FISCAM presents a methodology for performing information system (IS) control audits of federal and other governmental entities in accordance with professional standards. This version supersedes the prior version, Federal Information System Controls Audit Manual: Volume I Financial Statement Audits, AIMD-12.19.6, January 1, 2001. The FISCAM is designed to be used primarily on financial and performance audits and attestation engagements performed in accordance with GAGAS, as presented in Government Auditing Standards (also know as the "Yellow Book"). The FISCAM is consistent with the GAO/PCIE Financial Audit Manual (FAM). Also, FISCAM control activities are consistent with NIST Special Publication 800-53 and all SP800-53 controls have been mapped to the FISCAM. The FISCAM, which is consistent with NIST and other criteria, is organized to facilitate effective and efficient IS control audits. Specifically, the methodology in the FISCAM incorporates the following: (1) A top-down, risk-based approach that considers materiality and significance in determining effective and efficient audit procedures; (2) Evaluation of entitywide controls and their effect on audit risk; (3) Evaluation of general controls and their pervasive impact on business process application controls; (4) Evaluation of security management at all levels (entitywide, …
Date:
February 2, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Federal Register, Volume 74, Number 20, February 2, 2009, Pages 5797-5898
Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii.
Date:
February 2, 2009
Creator:
United States. Office of the Federal Register.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Final Report SBIR Phase I, Improvement of Properties of Tubular Internal-Tin Nb3Sn
Final report of SBIR to develop an economical process that can produce the best material for high field magnets to be used in the next generation of accelerators.
Date:
February 2, 2009
Creator:
Gregory,Eric
Object Type:
Report
System:
The UNT Digital Library
Final Technical Report
This research consisted of a theoretical investigation of the properties of surface-based nanostructures, having as a main goal the deeper understanding of the atomic-scale mechanisms responsible for the formation and stability of such structures. This understanding will lead to the design of improved systems for applications in diverse areas such as novel electronic devices, sensors, field-effect transistors, substrates with enhanced hydro-phobic (water repelling) or hydro-philic (water absorbing) behavior for coatings of various surfaces used in bioengineering, flexible displays, organic photovoltaics, etc. The research consisted of developing new theoretical methodologies and applying them to a wide range of interesting physical systems. Highlights of the new methodologies include techniques for bridging different scales, from the quantum-mechanical electronic level to the meso-scopic level of large molecular structures such as DNA, carbon nanotubes and two-dimensional assemblies of organic molecules. These methodologies were successfully applied to investigate interactions between systems that are large on the atomic scale (reaching the scale of microns in length or milliseconds in time), but still incorporating all the essential elements of the atomic-scale structure. While the research performed here did not address applications directly, the implications of its finding are important in guiding experimental searches and in coming up with …
Date:
February 2, 2009
Creator:
Kaxiras, Efthimios
Object Type:
Report
System:
The UNT Digital Library
FTIR and Raman Study of the LixTiyMn1-yO2 (y = 0, 0.11) Cathodes in Methylpropyl Pyrrolidinium Bis(fluoro-sulfonyl)imide, LiTFSI Electrolyte
This work demonstrates the protective effect of partial titanium substitution in Li{sub x}Ti{sub 0.11}Mn{sub 0.89}O{sub 2} against surface decomposition in room-temperature ionic liquid (RTILs) cells. Raman microscopy and reflectance Fourier transform IR (FTIR) spectroscopy were used to analyze electrodes recovered from cycled Li/Li{sub x}Ti{sub y}Mn{sub 1-y}O{sub 2} (y=0, 0.11) cells containing the 0.5 mol/kg LiTFSI in P{sub 13}FSI RTIL electrolyte. [TFSI=bis(trifluoromethanesulfonyl)imide.] Raman and FTIR spectra of cycled Li{sub x}MnO{sub 2} cathodes showed many distinct bands that can be attributed to both the electrolyte and electrode decomposition products. The thickness of the amorphous porous layer on the Li{sub x}MnO{sub 2} cathode increased during cycling. The surface degradation of Li{sub x}MnO{sub 2} and precipitation of electrolyte decomposition products contributed to the film growth. Improved cycling behavior was observed in cells containing Li{sub x}Ti{sub 0.11}Mn{sub 0.89}O{sub 2}, yet Raman spectroscopy also showed possible surface degradation. The FTIR spectra of cycled Li{sub x}MnO{sub 2} and Li{sub x}Ti{sub 0.11}Mn{sub 0.89}O{sub 2} cathodes displayed bands characteristic for LiSO{sub 3}CF{sub 3} and Li{sub 2}NSO{sub 2}CF{sub 3}, which originate from the reaction of the TFSI anion with traces of water present in the cell.
Date:
February 2, 2009
Creator:
Hardwick, L.J.; Lucas, I.T.; Doeff, M.M.; Kostecki, R. & Saint, J.A.
Object Type:
Article
System:
The UNT Digital Library
[Funeral Program for Williard Crawford, February 2, 2009]
Funeral program for Williard (Joe) Crawford, born August 18, 1936 and died January 25, 2009. The funeral was held February 2, 2009 at Bethel Community Church, officiated by Pastor Lee Petty. Funeral arrangements were made through Lewis Funeral Home and he was buried in Fort Sam Houston National Cemetery near San Antonio, Texas,
Date:
February 2, 2009
Creator:
unknown
Object Type:
Pamphlet
System:
The Portal to Texas History
GAO Bid Protests: Trends, Analysis, and Options for Congress
This report is one of two providing Congress with background on the Government Accountability Office (GAO) bid-protest process. It analyzes (1) trends in bid protests filed with GAO, (2) the impact bid protests have in delaying contracts, (3) the most common grounds for GAO to sustain a protest, and (4) trends in bid protests filed against the Department of Defense (DOD).
Date:
February 2, 2009
Creator:
Schwartz, Moshe & Manuel, Kate M.
Object Type:
Report
System:
The UNT Digital Library
Government Access to Phone Calling Activity and Related Records: Legal Authorities
This report summarizes legal authorities regarding access by the government, for either foreign intelligence or law enforcement purposes, to information related to telephone calling patterns or practices. Where pertinent, it also discusses statutory prohibitions against accessing or disclosing such information, along with relevant exceptions to those prohibitions.
Date:
February 2, 2009
Creator:
Bazan, Elizabeth B.; Liu, Edward C. & Stevens, Gina
Object Type:
Report
System:
The UNT Digital Library
Herring v. United States: Extension of the Good-Faith Exception to the Exclusionary Rule in Fourth Amendment Cases
In Herring v. United States, a 2009 decision, the Supreme Court for the first time applied the good-faith exception to bar application of the exclusionary rule in a case involving police error regarding a warrant. This report discusses the Court's current Fourth Amendment jurisprudence and the legal implications.
Date:
February 2, 2009
Creator:
Henning, Anna C.
Object Type:
Report
System:
The UNT Digital Library
Impacts of aerosol-cloud interactions on past and future changes in tropospheric composition
The development of effective emissions control policies that are beneficial to both climate and air quality requires a detailed understanding of all the feedbacks in the atmospheric composition and climate system. We perform sensitivity studies with a global atmospheric composition-climate model to assess the impact of aerosols on tropospheric chemistry through their modification on clouds, aerosol-cloud interactions (ACI). The model includes coupling between both tropospheric gas-phase and aerosol chemistry and aerosols and liquid-phase clouds. We investigate past impacts from preindustrial (PI) to present day (PD) and future impacts from PD to 2050 (for the moderate IPCC A1B scenario) that embrace a wide spectrum of precursor emission changes and consequential ACI. The aerosol indirect effect (AIE) is estimated to be -2.0 Wm{sup -2} for PD-PI and -0.6 Wm{sup -2} for 2050-PD, at the high end of current estimates. Inclusion of ACI substantially impacts changes in global mean methane lifetime across both time periods, enhancing the past and future increases by 10% and 30%, respectively. In regions where pollution emissions increase, inclusion of ACI leads to 20% enhancements in in-cloud sulfate production and {approx}10% enhancements in sulfate wet deposition that is displaced away from the immediate source regions. The enhanced in-cloud sulfate …
Date:
February 2, 2009
Creator:
Unger, N.; Menon, S.; Shindell, D. T. & Koch, D. M.
Object Type:
Article
System:
The UNT Digital Library
Industrial Energy Efficiency and Climate Change Mitigation
Industry contributes directly and indirectly (through consumed electricity) about 37% of the global greenhouse gas emissions, of which over 80% is from energy use. Total energy-related emissions, which were 9.9 GtCO2 in 2004, have grown by 65% since 1971. Even so, industry has almost continuously improved its energy efficiency over the past decades. In the near future, energy efficiency is potentially the most important and cost-effective means for mitigating greenhouse gas emissions from industry. This paper discusses the potential contribution of industrial energy efficiency technologies and policies to reduce energy use and greenhouse gas emissions to 2030.
Date:
February 2, 2009
Creator:
Worrell, Ernst; Bernstein, Lenny; Roy, Joyashree; Price, Lynn; de la Rue du Can, Stephane & Harnisch, Jochen
Object Type:
Report
System:
The UNT Digital Library
Intercomparison of model simulations of mixed-phase clouds observed during the ARM Mixed-Phase Arctic Cloud Experiment. Part I: Single layer cloud
Results are presented from an intercomparison of single-column and cloud-resolving model simulations of a cold-air outbreak mixed-phase stratocumulus cloud observed during the Atmospheric Radiation Measurement (ARM) program's Mixed-Phase Arctic Cloud Experiment. The observed cloud occurred in a well-mixed boundary layer with a cloud top temperature of -15 C. The observed average liquid water path of around 160 g m{sup -2} was about two-thirds of the adiabatic value and much greater than the average mass of ice crystal precipitation which when integrated from the surface to cloud top was around 15 g m{sup -2}. The simulations were performed by seventeen single-column models (SCMs) and nine cloud-resolving models (CRMs). While the simulated ice water path is generally consistent with the observed values, the median SCM and CRM liquid water path is a factor of three smaller than observed. Results from a sensitivity study in which models removed ice microphysics suggest that in many models the interaction between liquid and ice-phase microphysics is responsible for the large model underestimate of liquid water path. Despite this general underestimate, the simulated liquid and ice water paths of several models are consistent with the observed values. Furthermore, there is evidence that models with more sophisticated microphysics …
Date:
February 2, 2009
Creator:
Klein, Stephen A.; McCoy, Renata B.; Morrison, Hugh; Ackerman, Andrew S.; Avramov, Alexander; de Boer, Gijs et al.
Object Type:
Article
System:
The UNT Digital Library