Determination for the 2006 International Energy Conservation Code, Residential Buildings – Technical Support Document (open access)

Determination for the 2006 International Energy Conservation Code, Residential Buildings – Technical Support Document

Provides a technical analysis showing that the 2006 International Energy Conservation Code contains improvements in energy efficiency compared to its predecessor, the 2003 International Energy Conservation Code. DOE is required by law to issue "determinations" of whether or not new editions of the IECC improve energy efficiency.
Date: September 26, 2009
Creator: Lucas, Robert G.
Object Type: Report
System: The UNT Digital Library
AAAR 28th Annual Conference Symposia Focusing on Topics of Interest to the U.S. DOE Atmospheric Science Program - October 26-30, 2009 (open access)

AAAR 28th Annual Conference Symposia Focusing on Topics of Interest to the U.S. DOE Atmospheric Science Program - October 26-30, 2009

This report addresses the secondary aerosol is an important component of atmospheric fine particles that generally consists of organics, sulfates, and nitrates.
Date: October 26, 2009
Creator: Ziemann, Paul
Object Type: Article
System: The UNT Digital Library
Analytical Data Report of Water Samples Collected For I-129 Analysis (open access)

Analytical Data Report of Water Samples Collected For I-129 Analysis

This is an analytical data report for samples received from the central plateau contractor. The samples were analyzed for iodine-129.
Date: October 26, 2009
Creator: Lindberg, Michael J.
Object Type: Report
System: The UNT Digital Library
The use of TI-208 gamma rays for safeguards, nondestructive-assay (NDA) measurements (open access)

The use of TI-208 gamma rays for safeguards, nondestructive-assay (NDA) measurements

This paper examines two cases where gamma rays from Tl-208, including the 2614keV gamma ray, were used to detect anomalies in waste material. In addition to the characterization of waste for waste acceptance, and compliance with environmental and transportation laws, there is a safeguards element as well. The more sophisticated method of NDA at Y-12 includes a means to detect shielded special nuclear material (SNM). Excess count rates in the 2614keV gamma ray from Tl-208 are an indication of potential shielded HEU in waste as well as other containers. The 2614keV gamma ray is easy to monitor routinely. When a large 2614keV peak is detected, further investigation can be conducted from the gamma spectrum. This paper describes this further investigation in two cases. In one case self-shielded HEU was detected. In the other case the Tl-208 gamma rays came from a piece of Th-232 metal.
Date: May 26, 2009
Creator: Oberer, R. B.; Chiang, L. G.; Norris, M. J.; Gunn, C. A. & Adaline, B. C.
Object Type: Report
System: The UNT Digital Library
Preparation and Characterization of Paints and Coatings from Soy and Corn Oils (open access)

Preparation and Characterization of Paints and Coatings from Soy and Corn Oils

This project was highly successful. A series of new waterborne polyurethane (PU)/acrylic hybrid latexes were successfully synthesized by the emulsion polymerization of acrylic monomers (butyl acrylate and methyl methacrylate) in the presence of a soybean oil-based waterborne PU dispersion using potassium persulfate as an initiator. The waterborne PU dispersion was synthesized by a polyaddition reaction of toluene 2,4-diisocyanate and a soybean oil-based polyol (SOL). The resulting hybrid latexes, containing 15-60 wt % SOL as a renewable resource, are very stable and exhibit uniform particle sizes of {approx}125 nm as determined by transmittance electronic microscopy. The structure, thermal, and mechanical properties of the resulting hybrid latex films have been investigated by Fourier transform infrared spectroscopy, solid state {sup 13}C NMR spectroscopy, dynamic mechanical analysis, extraction, and mechanical testing. Grafting copolymerization of the acrylic monomers onto the PU network occurs during the emulsion polymerization, leading to a significant increase in the thermal and mechanical properties of the resulting hybrid latexes. This work provides a new way of utilizing renewable resources to prepare environmentally friendly hybrid latexes with high performance for coating applications. In addition, a novel soybean oil-based vinyl-containing waterborne polyurethane (VPU) dispersion has been successfully synthesized from toluene 2,4-diisocyanate, dimethylol propionic …
Date: February 26, 2009
Creator: Larock, Richard C.
Object Type: Report
System: The UNT Digital Library
The Case for the Younger Dryas Extraterrestrial Impact Event: Mammoth, Megafauna and Clovis Extinction (open access)

The Case for the Younger Dryas Extraterrestrial Impact Event: Mammoth, Megafauna and Clovis Extinction

The onset of>1000 years of Younger Dryas cooling, broad-scale extinctions, and the disappearance of the Clovis culture in North America simultaneously occurred 12,900 years ago followed immediately by the appearance of a carbon-rich black layer at many locations. In situ bones of extinct megafauna and Clovis tools occur only beneath this black layer and not within or above it. At the base of the black mat at 9 Clovis-age sites in North America and a site in Belgium numerous extraterrestrial impact markers were found including magnetic grains highly enriched in iridium, magnetic microspherules, vesicular carbon spherules enriched in cubic, hexagonal, and n-type nanodiamonds, glass-like carbon containing Fullerenes and nanodiamonds, charcoal, soot, and polycyclic aromatic hydrocarbons. The same impact markers were found mixed throughout the sediments of 15 Carolina Bays, elliptical depressions along the Atlantic coast, whose parallel major axes point towards either the Great Lakes or Hudson Bay. The magnetic grains and spherules have an unusual Fe/Ti composition similar to lunar Procellarum KREEP Terrane and the organic constituents are enriched in 14C leading to radiocarbon dates often well into the future. These characteristics are inconsistent with known meteorites and suggest that the impact was by a previous unobserved, possibly extrasolar …
Date: October 26, 2009
Creator: Firestone, Richard B.
Object Type: Article
System: The UNT Digital Library
Dataflow System: Is It A Viable Scalable Graph Analysis Engine? (open access)

Dataflow System: Is It A Viable Scalable Graph Analysis Engine?

None
Date: February 26, 2009
Creator: Yoo, A
Object Type: Article
System: The UNT Digital Library
Narrowing of the Neutron Sd-Pf Shell Gap in 29Na: First in-Beam Gamma-Ray Spectroscopy Results Using TIGRESS at ISAC-II (open access)

Narrowing of the Neutron Sd-Pf Shell Gap in 29Na: First in-Beam Gamma-Ray Spectroscopy Results Using TIGRESS at ISAC-II

None
Date: January 26, 2009
Creator: Hurst, A. M.; Wu, C. Y.; Becker, J. A.; Stoyer, M. A.; Pearson, C. J.; Hackman, G. et al.
Object Type: Article
System: The UNT Digital Library
Shock Ignitiion: A New Approach to High Gain/Yield Targets for the National Ignition Facility (open access)

Shock Ignitiion: A New Approach to High Gain/Yield Targets for the National Ignition Facility

None
Date: March 26, 2009
Creator: Perkins, L J; LaFortune, K N; Betti, R; Williams, W H; Miles, A R & Divol, L
Object Type: Report
System: The UNT Digital Library
Local Structure of La1-xSrxCoO3 determined from EXAFS and neutron PDF studies (open access)

Local Structure of La1-xSrxCoO3 determined from EXAFS and neutron PDF studies

The combined local structure techniques, extended x-ray absorption fine structure (EXAFS) and neutron pair distribution function analysis, have been used for temperatures 4<= T<= 330 K to rule out a large Jahn-Teller (JT) distortion of the Co-O bond in La1?xSrxCoO3 for a significant fraction of Co sites (x<= 0.35), indicating few, if any, JT-active, singly occupied eg Co sites exist.
Date: January 26, 2009
Creator: Sundaram, N.; Jiang, Y.; Anderson, I. E.; Belanger, D. P.; Booth, C. H.; Bridges, F. et al.
Object Type: Article
System: The UNT Digital Library
Noise in a Calorimeter Readout System Using Periodic Sampling (open access)

Noise in a Calorimeter Readout System Using Periodic Sampling

Fourier transform analysis of the calorimeter noise problem gives quantitative results on (a) the time-height correlation, (b) the effect of background on optimal shaping and on the ENC, (c) sampling frequency requirements, and (d) the relation between sampling frequency and the required quantization error.
Date: February 26, 2009
Creator: Innes, Walter R.
Object Type: Report
System: The UNT Digital Library
The Development of Models to Optimize Selection of Nuclear Fuels through Atomic-Level Simulation (open access)

The Development of Models to Optimize Selection of Nuclear Fuels through Atomic-Level Simulation

Demonstrated that FRAPCON can be modified to accept data generated from first principles studies, and that the result obtained from the modified FRAPCON make sense in terms of the inputs. Determined the temperature dependence of the thermal conductivity of single crystal UO2 from atomistic simulation.
Date: January 26, 2009
Creator: Phillpot, Prof. Simon; Sinnott, Prof. Susan B.; Seifert, Prof. Hans & Tulenko, Prog. James
Object Type: Report
System: The UNT Digital Library
Dalitz Plot Analysis of Ds+->pi+pi-pi+ (open access)

Dalitz Plot Analysis of Ds+->pi+pi-pi+

A Dalitz plot analysis of {approx} 13, 000 D{sub s}{sup +} decays to {pi}{sup +}{pi}{sup +}{pi}{sup -} has been performed. A 384 fb{sup -1} data sample, recorded by the BABAR detector at the PEP-II asymmetric-energy e{sup +}e{sup -} storage ring running at center of mass energies near 10.6 GeV, is used. Amplitudes and phases of the intermediate resonances which contribute to this final state are measured. A high precision measurement of the ratio: {Beta}(D{sub s}{sup +} {yields} {pi}{sup +}{pi}{sup +}{pi}{sup -})/{Beta}(D{sub s}{sup +} {yields} K{sup +}K{sup -}{pi}{sup +}) = 0.199 {+-} 0.004 {+-} 0.006 is performed. Using a model independent partial wave analysis the amplitude and phase of the S-wave have been measured.
Date: January 26, 2009
Creator: Aubert, B.; Bona, M.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E. et al.
Object Type: Article
System: The UNT Digital Library
2009 EVALUATION OF TRITIUM REMOVAL AND MITIGATION TECHNOLOGIES FOR WASTEWATER TREATMENT (open access)

2009 EVALUATION OF TRITIUM REMOVAL AND MITIGATION TECHNOLOGIES FOR WASTEWATER TREATMENT

Since 1995, a state-approved land disposal site (SALDS) has received tritium contaminated effluents from the Hanford Site Effluent Treatment Facility (ETF). Tritium in this effluent is mitigated by storage in slow moving groundwater to allow extended time for decay before the water reaches the site boundary. By this method, tritium in the SALDS is isolated from the general environment and human contact until it has decayed to acceptable levels. This report contains the 2009 update evaluation of alternative tritium mitigation techniques to control tritium in liquid effluents and groundwater at the Hanford site. A thorough literature review was completed and updated information is provided on state-of-the-art technologies for control of tritium in wastewaters. This report was prepared to satisfy the Hanford Federal Facility Agreement and Consent Order (Tri-Party Agreement) Milestone M-026-07B (Ecology, EPA, and DOE 2007). Tritium separation and isolation technologies are evaluated periodically to determine their feasibility for implementation to control Hanford site liquid effluents and groundwaters to meet the Us. Code of Federal Regulations (CFR), Title 40 CFR 141.16, drinking water maximum contaminant level (MCL) for tritium of 20,000 pOll and/or DOE Order 5400.5 as low as reasonably achievable (ALARA) policy. Since the 2004 evaluation, there have been …
Date: February 26, 2009
Creator: KJ, LUECK; DJ, GENESSE & GE, STEGEN
Object Type: Report
System: The UNT Digital Library
LADTAP-PROB: A PROBABILISTIC MODEL TO ASSESS RADIOLOGICAL CONSEQUENCES FROM LIQUID RADIOACTIVE RELEASES (open access)

LADTAP-PROB: A PROBABILISTIC MODEL TO ASSESS RADIOLOGICAL CONSEQUENCES FROM LIQUID RADIOACTIVE RELEASES

The potential radiological consequences to humans resulting from aqueous releases at the Savannah River Site (SRS) have usually been assessed using the computer code LADTAP or deterministic variations of this code. The advancement of LADTAP over the years included LADTAP II (a computer program that still resides on the mainframe at SRS) [1], LADTAP XL{copyright} (Microsoft Excel{reg_sign} Spreadsheet) [2], and other versions specific to SRS areas such as [3]. The spreadsheet variations of LADTAP contain two worksheets: LADTAP and IRRIDOSE. The LADTAP worksheet estimates dose for environmental pathways including ingestion of water and fish and external exposure resulting from recreational activities. IRRIDOSE estimates potential dose to individuals from irrigation of food crops with contaminated water. A new version of this deterministic methodology, LADTAP-PROB, was developed at Savannah River National Laboratory (SRNL) to (1) consider the complete range of the model parameter values (not just maximum or mean values), (2) determine the influences of parameter uncertainties within the LADTAP methodology, to perform a sensitivity analysis of all model parameters (to identify the input parameters to which model results are most sensitive), and (3) probabilistically assess radiological consequences from contaminated water. This study presents the methodology applied in LADTAP-PROB.
Date: January 26, 2009
Creator: Foley, Trevor Q.; Farfan, Eduardo B. & Jannik, G. Timothy
Object Type: Article
System: The UNT Digital Library

CPV 101: Intro to CPV Technology, Opportunities and Challenges

The presentation describes Concentrating Photovoltaic power (CPV), why it is important, the associated the opportunities and challenges, and more than 5-dozen companies that are pursuing the approach.
Date: October 26, 2009
Creator: Kurtz, S.
Object Type: Presentation
System: The UNT Digital Library
Analysis of High-Te Plasmas Heated by HHFW in NSTX (open access)

Analysis of High-Te Plasmas Heated by HHFW in NSTX

The implementation in TRANSP of a recent version of TORIC capable of calculating power deposition for HHFW conditions is used to analyze NSTX plasma under different operating conditions. The power deposition profile into the electrons is obtained for high-Te conditions - Te ≤ 5keV - obtained in He and D plasmas with ITB. HHFW heating of NBI-induced H-mode plasmas is discussed. At the RF onset the RF power is divided evenly between the electrons and the fast particles, but as the latter thermalize and the electron density increases, the HHFW power repartition shifts progressively toward the electrons. Power deposition profiles for the electrons and for the fast particles are shown.
Date: June 26, 2009
Creator: LeBlanc, P.; Bell, R. E.; Bonoli, P.; Hosea, J. C.; Mazzucato, E.; Phillips, C. K. et al.
Object Type: Article
System: The UNT Digital Library
Modeling the Office of Science Ten Year Facilities Plan: The PERI Architecture Tiger Team (open access)

Modeling the Office of Science Ten Year Facilities Plan: The PERI Architecture Tiger Team

The Performance Engineering Institute (PERI) originally proposed a tiger team activity as a mechanism to target significant effort optimizing key Office of Science applications, a model that was successfully realized with the assistance of two JOULE metric teams. However, the Office of Science requested a new focus beginning in 2008: assistance in forming its ten year facilities plan. To meet this request, PERI formed the Architecture Tiger Team, which is modeling the performance of key science applications on future architectures, with S3D, FLASH and GTC chosen as the first application targets. In this activity, we have measured the performance of these applications on current systems in order to understand their baseline performance and to ensure that our modeling activity focuses on the right versions and inputs of the applications. We have applied a variety of modeling techniques to anticipate the performance of these applications on a range of anticipated systems. While our initial findings predict that Office of Science applications will continue to perform well on future machines from major hardware vendors, we have also encountered several areas in which we must extend our modeling techniques in order to fulfill our mission accurately and completely. In addition, we anticipate that …
Date: June 26, 2009
Creator: de Supinski, Bronis R.; Alam, Sadaf; Bailey, David H.; Carrington, Laura; Daley, Chris; Dubey, Anshu et al.
Object Type: Report
System: The UNT Digital Library
Annual Site Environmental Report for Calendar Year 2004 (open access)

Annual Site Environmental Report for Calendar Year 2004

This report provides the U.S. Department of Energy (DOE) and the public with information on the level of radioactive and non-radioactive pollutants (if any) that are added to the environment as a result of Princeton Plasma Physics Laboratory's (PPPL) operations. The results of the 2004 environmental surveillance and monitoring program for PPPL's are presented and discussed. The report also summarizes environmental initiatives, assessments, and programs that were undertaken in 2004.
Date: March 26, 2009
Creator: Finley, V.
Object Type: Report
System: The UNT Digital Library
Simulation Results for the New NSTX HHFW Antenna Straps Design by Using Microwave Studio (open access)

Simulation Results for the New NSTX HHFW Antenna Straps Design by Using Microwave Studio

Experimental results have shown that the high harmonic fast wave (HHFW) at 30 MHz can provide substantial plasma heating and current drive for the NSTX spherical tokamak operation. However, the present antenna strap design rarely achieves the design goal of delivering the full transmitter capability of 6 MW to the plasma. In order to deliver more power to the plasma, a new antenna strap design and the associated coaxial line feeds are being constructed. This new antenna strap design features two feedthroughs to replace the old single feed-through design. In the design process, CST Microwave Studio has been used to simulate the entire new antenna strap structure including the enclosure and the Faraday shield. In this paper, the antenna strap model and the simulation results will be discussed in detail. The test results from the new antenna straps with their associated resonant loops will be presented as well.
Date: May 26, 2009
Creator: Kung, C. C.; Brunkhorst, C.; Greenough, N.; Fredd, E.; Castano, A.; Miller, D. et al.
Object Type: Article
System: The UNT Digital Library
Time-dependent amplitude analysis of $B^0 \to K^0_S\pi^ pi^-$ (open access)

Time-dependent amplitude analysis of $B^0 \to K^0_S\pi^ pi^-$

In this paper we present results from a time-dependent amplitude analysis of the B{sup 0} {yields} K{sup 0}{sub s}{pi}{sup +}{pi}{sup -} decay. In Sec. II we describe the time-dependent DP formalism, and introduce the signal parameters that are extracted in the fit to data. In Sec. III we briefly describe the BABAR detector and the data set. In Sec. IV, we explain the selection requirements used to obtain the signal candidates and suppress backgrounds. In Sec. V we describe the fit method and the approach used to control experimental effects such as resolution. In Sec. VI we present the results of the fit, and extract parameters relevant to the contributing intermediate resonant states. In Sec. VII we discuss systematic uncertainties in the results, and finally we summarize the results in Sec. VIII.
Date: May 26, 2009
Creator: Aubert, B.
Object Type: Article
System: The UNT Digital Library
800MHz Crab Cavity Conceptual Design For the LHC Upgrade (open access)

800MHz Crab Cavity Conceptual Design For the LHC Upgrade

In this paper, we present an 800 MHz crab cavity conceptual design for the LHC upgrade. The cell shape is optimized for lower maximum peak surface fields as well as higher transverse R/Q. A compact coax-to-coax coupler scheme is proposed to damp the LOM/SOM modes. A two-stub antenna with a notch filter is used as the HOM coupler to damp the HOM modes in the horizontal plane and rejects the operating mode at 800MHz. Multipacting (MP) simulations show that there are strong MP particles at the disks. Adding grooves along the short axis without changing the operating mode's RF characteristics can suppress the MP activities. Possible input coupler configurations are discussed.
Date: May 26, 2009
Creator: Xiao, Liling; Li, Zenghai; Ng, Cho-Kuen; Seryi, Andrei & /SLAC
Object Type: Article
System: The UNT Digital Library
Transgenic Mouse Model of Chronic Beryllium Disease (open access)

Transgenic Mouse Model of Chronic Beryllium Disease

Animal models provide powerful tools for dissecting dose-response relationships and pathogenic mechanisms and for testing new treatment paradigms. Mechanistic research on beryllium exposure-disease relationships is severely limited by a general inability to develop a sufficient chronic beryllium disease animal model. Discovery of the Human Leukocyte Antigen (HLA) - DPB1Glu69 genetic susceptibility component of chronic beryllium disease permitted the addition of this human beryllium antigen presentation molecule to an animal genome which may permit development of a better animal model for chronic beryllium disease. Using FVB/N inbred mice, Drs. Rubin and Zhu, successfully produced three strains of HLA-DPB1 Glu 69 transgenic mice. Each mouse strain contains a haplotype of the HLA-DPB1 Glu 69 gene that confers a different magnitude of odds ratio (OR) of risk for chronic beryllium disease: HLA-DPB1*0401 (OR = 0.2), HLA-DPB1*0201 (OR = 15), HLA-DPB1*1701 (OR = 240). In addition, Drs. Rubin and Zhu developed transgenic mice with the human CD4 gene to permit better transmission of signals between T cells and antigen presenting cells. This project has maintained the colonies of these transgenic mice and tested the functionality of the human transgenes.
Date: May 26, 2009
Creator: Gordon, Terry
Object Type: Report
System: The UNT Digital Library
Tolerance Study for the Echo-Enabled Harmonic Generation Free Electron Laser (open access)

Tolerance Study for the Echo-Enabled Harmonic Generation Free Electron Laser

The echo-enabled harmonic generation free electron laser (EEHG FEL) holds great promise in generation of coherent soft x-ray directly from a UV seed laser within one stage. The density modulation in the harmonic generation process is affected by the smearing effect caused by the fluctuations of energy and current along the beam, as well as the field error of the dispersive elements. In this paper we study the tolerance of the EEHG FEL on beam quality and field quality. The diffusion effect from incoherent synchrotron radiation (ISR) in the dispersion sections and the second modulator are also studied.
Date: May 26, 2009
Creator: Xiang, D. & Stupakov, G.
Object Type: Article
System: The UNT Digital Library