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The Strategic Petroleum Reserve: Possible Effects on Gasoline Prices of Selected Fill Policies (open access)

The Strategic Petroleum Reserve: Possible Effects on Gasoline Prices of Selected Fill Policies

None
Date: April 19, 2004
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Biodefense to Cancer Office- Meeting Transcirpt (open access)

Biodefense to Cancer Office- Meeting Transcirpt

None
Date: April 19, 2004
Creator: Felton, J S; Matthews, D L & Lane, S M
Object Type: Article
System: The UNT Digital Library
Modeling Electron Cloud Effects in Heavy Ion Accelerators (open access)

Modeling Electron Cloud Effects in Heavy Ion Accelerators

None
Date: April 19, 2004
Creator: Cohen, R; Azevedo, A; Friedman, A; Furman, M; Lund, S; Molvik, A et al.
Object Type: Article
System: The UNT Digital Library
Use of fast scopes to enable Thomson scattering measurement in presence of fluctuating plasma light. (open access)

Use of fast scopes to enable Thomson scattering measurement in presence of fluctuating plasma light.

The addition of inexpensive high-speed oscilloscopes has enabled higher Te Thomson scattering measurements on the SSPX spheromak. Along with signal correlation techniques, the scopes allow new analyses based on the shape of the scattered laser pulse to discriminate against fluctuating background plasma light that often make gated-integrator measurements unreliable. A 1.4 J Nd:YAG laser at 1064 nm is the scattering source. Spatial locations are coupled by viewing optics and fibers to 4-wavelength-channel filter polychrometers. Ratios between the channels determine Te while summations of the channels determine density. Typically, the channel that provides scattered signal at higher Te is contaminated by fluctuating background light. Individual channels are correlated with either a modeled representation of the laser pulse or a noise-free stray light signal to extract channel amplitudes.
Date: April 19, 2004
Creator: McLean, H; Moller, J & Hill, D
Object Type: Article
System: The UNT Digital Library
Uptake of 137Cs by Leafy Vegetables and Grains from Calcareous Soils (open access)

Uptake of 137Cs by Leafy Vegetables and Grains from Calcareous Soils

Cesium-137 was deposited on Bikini Island at Bikini Atoll in 1954 as a result of nuclear testing and has been transported and cycled in the ecosystem ever since. Atoll soils are of marine origin and are almost pure CaCO{sub 3} with high concentrations of organic matter in the top 40 cm. Data from previous experiments with mature fruit trees show very high transfer factors (TF's), [Bq g{sup -1} plant/ Bq g{sup -1} soil, both in dry weight] into fruits from atoll calcareous soil. These TF's are much higher than reported for continental, silica-based soils. In this report TF's for 5 types of leafy vegetable crops and 2 types of grain crops are provided for use in predictive dose assessments and for comparison with other data from other investigators working with other types of soil in the IAEA CRP ''The Classification of Soil Systems on the Basis of Transfer Factors of Radionuclides from Soil to Reference Plants''. Transfer factors for plants grown on calcareous soil are again very high relative to clay-containing soils and range from 23 to 39 for grain crops and 21 to 113 for leafy vegetables. Results from these experiments, in this unique, high pH, high organic content, …
Date: April 19, 2004
Creator: Robison, W; Hamilton, T; Conrado, C & Kehl, S
Object Type: Article
System: The UNT Digital Library
Status report on the 'Merging' of the Electron-Cloud Code POSINST with the 3-D Accelerator PIC CODE WARP (open access)

Status report on the 'Merging' of the Electron-Cloud Code POSINST with the 3-D Accelerator PIC CODE WARP

We have integrated the electron-cloud code POSINST [1] with WARP [2]--a 3-D parallel Particle-In-Cell accelerator code developed for Heavy Ion Inertial Fusion--so that the two can interoperate. Both codes are run in the same process, communicate through a Python interpreter (already used in WARP), and share certain key arrays (so far, particle positions and velocities). Currently, POSINST provides primary and secondary sources of electrons, beam bunch kicks, a particle mover, and diagnostics. WARP provides the field solvers and diagnostics. Secondary emission routines are provided by the Tech-X package CMEE.
Date: April 19, 2004
Creator: Vay, J. L.; Furman, M. A.; Azevedo, A. W.; Cohen, R. H.; Friedman, A.; Grote, D. P. et al.
Object Type: Article
System: The UNT Digital Library
IGNEOUS INTRUSION IMPACTS ON WASTE PACKAGES AND WASTE FORMS (open access)

IGNEOUS INTRUSION IMPACTS ON WASTE PACKAGES AND WASTE FORMS

The purpose of this model report is to assess the potential impacts of igneous intrusion on waste packages and waste forms in the emplacement drifts at the Yucca Mountain Repository. The models are based on conceptual models and includes an assessment of deleterious dynamic, thermal, hydrologic, and chemical impacts. The models described in this report constitute the waste package and waste form impacts submodel of the Total System Performance Assessment for the License Application (TSPA-LA) model assessing the impacts of a hypothetical igneous intrusion event on the repository total system performance. This submodel is carried out in accordance with Technical Work Plan for Waste Form Degradation Modeling, Testing, and Analyses in Support of LA (BSC 2004 [DIRS:167796]) and Total System Performance Assessment-License Application Methods and Approaches (BSC 2003 [DIRS: 166296]). The technical work plan was prepared in accordance with AP-2.27Q, Planning for Science Activities. Any deviations from the technical work plan are documented in the following sections as they occur. The TSPA-LA approach to implementing the models for waste package and waste form response during igneous intrusion is based on identification of damage zones. Zone 1 includes all emplacement drifts intruded by the basalt dike, and Zone 2 includes all …
Date: April 19, 2004
Creator: Bernot, P.
Object Type: Report
System: The UNT Digital Library
Non-equilibrium Approach to Doping of Wide Bandgap materials by Molecular Beam Epitaxy. Final Report (open access)

Non-equilibrium Approach to Doping of Wide Bandgap materials by Molecular Beam Epitaxy. Final Report

It is well known that it has been difficult to obtain good bipolar doping in a wide bandgap semiconductors. Developed a new doping technique, involving use of a standard dopant, together with a ''co-dopant'' used to facilitate the introduction of the dopant, and have vastly alleviated this problem.
Date: April 19, 2004
Creator: Tamargo, M. C. & Neumark, G. F.
Object Type: Report
System: The UNT Digital Library

Oral History Interview with Gloria Villanueva-Anderson, April 19, 2004

Access: Use of this item is restricted to the UNT Community
Interview with community activist Gloria Villanueva-Anderson. The interview includes Villanueva-Anderson's personal experiences about being an activist in the Mexican-American community of Denton, Texas, education in Denton schools, discrimination at the train station in Denison, Texas, being accepted to the work-scholarship program of the FBI in 1952, opening her telephone answering exchange business, turning toward Republican politics, and her activities with George H.W. Bush's Texas Statewide Hispanic Campaign. Additionally, Villanueva-Anderson discusses her family background, the lack of discrimination against Hispanics in Denton, her family's assimilation in the Anglo culture, early Hispanic families in Denton, her appointment to the North Texas Hispanic Advisory Board by Senator John Tower, as well as her appointments to the Texas Small Business Task Force by Governor William Clements, the White House Conference on Small Business by President Jimmy Carter, and as Regional Advocate for the Small Business Administration by Ronald Reagan.
Date: April 19, 2004
Creator: Ray, Dulce Ivette & Villanueva-Anderson, Gloria
Object Type: Book
System: The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 82, No. 140, Ed. 1 Monday, April 19, 2004 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 82, No. 140, Ed. 1 Monday, April 19, 2004

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: April 19, 2004
Creator: Cash, Wanda Garner
Object Type: Newspaper
System: The Portal to Texas History
FRMAC Health and Safety Working Group Update (open access)

FRMAC Health and Safety Working Group Update

None
Date: April 19, 2004
Creator: Hadley, R T
Object Type: Article
System: The UNT Digital Library
Electron Clouds and Vacuum Pressure Rise in RHIC. (open access)

Electron Clouds and Vacuum Pressure Rise in RHIC.

The luminosity in RHIC is limited by vacuum pressure rises, observed with high intensity beams of all species (Au{sup 79+}, d{sup +}, p{sup +}). At injection, the pressure rise could be linked to the existence of electron clouds. In addition, pressure rises in the experimental regions may be caused by electron clouds. They review the existing observations, comparisons with simulations, as well as corrective measures taken and planned.
Date: April 19, 2004
Creator: Fischer, W.; Blaskiewicz, M.; He, P.; Huang, H.; Hseuh, H. C.; Iriso, U. et al.
Object Type: Article
System: The UNT Digital Library
An Approach to Estimate the Localized Effects of an Aircraft Crash on a Facility (open access)

An Approach to Estimate the Localized Effects of an Aircraft Crash on a Facility

Aircraft crashes are an element of external events required to be analyzed and documented in facility Safety Analysis Reports (SARs) and Nuclear Explosive Safety Studies (NESSs). This paper discusses the localized effects of an aircraft crash impact into the Device Assembly Facility (DAF) located at the Nevada Test Site (NTS), given that the aircraft hits the facility. This was done to gain insight into the robustness of the DAF and to account for the special features of the DAF that enhance its ability to absorb the effects of an aircraft crash. For the purpose of this paper, localized effects are considered to be only perforation or scabbing of the facility. This paper presents an extension to the aircraft crash risk methodology of Department of Energy (DOE) Standard 3014. This extension applies to facilities that may find it necessary or desirable to estimate the localized effects of an aircraft crash hit on a facility of nonuniform construction or one that is shielded in certain directions by surrounding terrain or buildings. This extension is not proposed as a replacement to the aircraft crash risk methodology of DOE Standard 3014 but rather as an alternate method to cover situations that were not considered.
Date: April 19, 2004
Creator: Kimura, C; Sanzo, D & Sharirli, M
Object Type: Article
System: The UNT Digital Library
Detection of nuclear threats in large cargo containers (open access)

Detection of nuclear threats in large cargo containers

In 2003 scientists at the Lawrence Livermore National Laboratory, the Lawrence Berkeley National Laboratory, and the University of California at Berkeley undertook a collaborative effort. The goal of this collaboration is to develop a concept for an active neutron interrogation system that can detect small masses of contraband fissile material in intermodal cargo containers--roughly five kg of highly-enriched-uranium or one kg of plutonium--even when well shielded by thick cargo. It is essential that implementation of the concept be reliable and has low false-positive and false-negative error rates. Interrogation must also be rapid to avoid interruption of commerce; analysis must be completed in minutes. This document summarizes that effort to date and was drawn, with the exception of minor editing, from the summary in Ref. 1.
Date: April 19, 2004
Creator: Gosnell, T B
Object Type: Report
System: The UNT Digital Library
Influence of the Environment on the General Corrosion Rate of Alloy 22 (N06022) (open access)

Influence of the Environment on the General Corrosion Rate of Alloy 22 (N06022)

Nickel (Ni) can dissolve a large amount of alloying elements while still maintaining its desirable austenitic microstructure. The resulting alloys are generally divided in families depending on the type of alloying elements they contain. Each one of these families is aimed to specific applications. Corrosive environments in industrial applications are generally divided for example in reducing acids, oxidizing acids, contaminated acids, caustic environments, oxidizing salts, etc. Depending on the application and the environment (electrolyte composition and temperature) several or single alloys may be recommended to fabricate components. The Nichromium-molybdenum (Ni-Cr-Mo) series contains a balanced selection of beneficial alloying elements so it can handle a variety of aggressive environments. By design, Alloy 22 or N06022 is one of the most versatile corrosion resistant nickel alloys since it has an outstanding corrosion resistance both in reducing and oxidizing conditions.
Date: April 19, 2004
Creator: Rebak, R B & Crook, P
Object Type: Article
System: The UNT Digital Library
Two-Particle Interferometry of 200 GeV Au+Au Collisions at PHENIX (open access)

Two-Particle Interferometry of 200 GeV Au+Au Collisions at PHENIX

The PHENIX experiment has measured pion-pion, kaon-kaon, and proton-proton correlations in Au+Au collisions at {radical}S{sub NN} = 200GeV. The correlations are fit to extract radii using both the Bowler Coulomb correction and full calculation of the two-particle wave function. The resulting radii are similar for all three species and decrease with increasing k{sub t} as expected for collective flow. The R{sub out} and R{sub side} radii are approximately equal indicating a short emission duration.
Date: April 19, 2004
Creator: Heffner, M
Object Type: Article
System: The UNT Digital Library
Design Aspects of an MSE Diagnostic for ITER (open access)

Design Aspects of an MSE Diagnostic for ITER

The Motional Stark Effect (MSE) diagnostic is unique in its ability to measure the current profile and will be essential in ITER for detailed analysis of Advanced Tokamak (AT) and other types of discharges. However, design of a MSE diagnostic for ITER presents many unique challenges. Among these is optical analysis for the convoluted optical path, required for effective neutron shielding, that employs several reflective optics arranged to form a labyrinth. The geometry of the diagnostic has been laid out and the expected Doppler shifts and channel resolution calculated. A model of the optical train has also been developed based on the Mueller matrix formalism. Unfolding the pitch angle for this complicated geometry is not straightforward and possible methods are evaluated. The CORSICA code is used to model a variety of ITER discharges including start-up, Ipramp and reverse shear. The code also incorporates a synthetic MSE diagnostic that can be used to evaluate different viewing locations and optimize channel locations for the above discharges. Simulation of the optical emission spectrum is also underway.
Date: April 19, 2004
Creator: Casper, T.; Jayakumar, J.; Makowski, M. & Ellis, R.
Object Type: Article
System: The UNT Digital Library
Ignition and Growth Modeling of LX-17 Hockey Puck Experiments (open access)

Ignition and Growth Modeling of LX-17 Hockey Puck Experiments

Detonating solid plastic bonded explosives (PBX) formulated with the insensitive molecule triaminotrinitrobenzene (TATB) exhibit measurable reaction zone lengths, curved shock fronts, and regions of failing chemical reaction at abrupt changes in the charge geometry. A recent set of ''hockey puck'' experiments measured the breakout times of diverging detonation waves in ambient temperature LX-17 (92.5 % TATB plus 7.5% Kel-F binder) and the breakout times at the lower surfaces of 15 mm thick LX-17 discs placed below the detonator-booster plane. The LX-17 detonation waves in these discs grow outward from the initial wave leaving regions of unreacted or partially reacted TATB in the corners of these charges. This new experimental data is accurately simulated for the first time using the Ignition and Growth reactive flow model for LX-17, which is normalized to a great deal of detonation reaction zone, failure diameter and diverging detonation data. A pressure cubed dependence for the main growth of reaction rate yields excellent agreement with experiment, while a pressure squared rate diverges too quickly and a pressure quadrupled rate diverges too slowly in the LX-17 below the booster equatorial plane.
Date: April 19, 2004
Creator: Tarver, C M
Object Type: Article
System: The UNT Digital Library
Foaming of E-Glass (Report for G Plus Project for PPG) (open access)

Foaming of E-Glass (Report for G Plus Project for PPG)

The behavior of foams generated in the crucible melts was investigated to study the effect of furnace atmosphere on E-glass foaming, specifically focused on its water content to understand the effect of oxy-firing. A quartz-crucible furnace equipped with video recording was used to observe the behavior and to evaluate stability of foams generated from the PPG E-glass under various atmospheres. The present study preliminarily concluded that the higher foaming in oxy-fired furnace compared to air-fired is caused by the effect of water on early sulfate decomposition, promoting more efficient refining gas generation from sulfate (known as ''dilution effect''), not by the effect of humidity on foam lamella stability. A plausible explanation for the difference between soda-lime glass and E-glass in the end result of the dilution effect on glass refining and foaming is presented. A preliminary experiment on the effect of heating rate also suggests that thermal history of glass melting can be a major factor in the rate of E-glass foaming. Approaches to develop the methods to reduce foaming in oxy-fired furnace are recommended.
Date: April 19, 2004
Creator: Kim, Dong-Sang; Hrma, Pavel R.; Pilon, Laurent & Dutton, Bryan C.
Object Type: Report
System: The UNT Digital Library
Iraq: Map Sources (open access)

Iraq: Map Sources

None
Date: April 19, 2004
Creator: unknown
Object Type: Report
System: The UNT Digital Library
World Bank Post-Conflict Aid: Oversight Issues for Congress (open access)

World Bank Post-Conflict Aid: Oversight Issues for Congress

None
Date: April 19, 2004
Creator: Weiss, Martin A.
Object Type: Report
System: The UNT Digital Library

Ensemble: 2004-04-19 – Brass Band

Access: Use of this item is restricted to the UNT Community
Concert presented at Winspear Hall at the Murchison Performing Arts Center.
Date: April 19, 2004
Creator: University of North Texas. Brass Band.
Object Type: Sound
System: The UNT Digital Library
Oral History Interview with Robert B. Norman, April 19, 2004 transcript

Oral History Interview with Robert B. Norman, April 19, 2004

The National Museum of the Pacific War presents an oral interview with Robert B. Norman. Norman grew up in North Carolina and finished two years at NC State in Raleigh before enlisting in the Army Air Corps in 1940. Shortly after the war started, Norman qualified for cadet flying school and earned his wings in December, 1942. He shares his experiences while in flight training. Norman had an advantage as he had learned to fly in the Civilian Pilot Program while at NC State. Upon graduating, Norman was made an instructo and sent to Marfa, Texas. in 1944, Norman was reassigned to the Air Transport Command and flew C-46 cargo planes and spare parts to India. Norman spent the remainder of the war flying 4-engine C-109 airplanes loaded with fuel for the fighter group in China over the Himalaya Mountains. When the war ended, Norman was discharged.
Date: April 19, 2004
Creator: Norman, Robert B.
Object Type: Sound
System: The Portal to Texas History
Oral History Interview with Jack Surles, April 19, 2004 transcript

Oral History Interview with Jack Surles, April 19, 2004

The National Museum of the Pacific War presents an oral interview with Jack Surles. Surles was born in 1924 in Louisiana. In December, 1942 he joined the Navy. He trained at the Great Lakes Naval Training Center. After basic training, Surles was trained in fire control and naval gunnery in Washington, DC. Upon completing that, he reported aboard the USS Franklin (CV-13) in January, 1944. Surles describes being aboard the Franklin when it was attacked in March, 1945 off the coast of Kyushu. Surles stayed with the ship all the way back to the US. He was discharged shortly before the end of the war.
Date: April 19, 2004
Creator: Surles, Jack
Object Type: Sound
System: The Portal to Texas History