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Health Physics Enrollments and Degrees Survey, 2008 Data (open access)

Health Physics Enrollments and Degrees Survey, 2008 Data

The survey includes degrees granted between September 1, 2007 and August 31, 2008. Enrollment information refers to the fall term 2008. Twenty-six academic programs were included in the survey universe, and all 26 programs provided data.
Date: March 30, 2009
Creator: Analysis and Evaluation, Science Education Programs
Object Type: Report
System: The UNT Digital Library
Nuclear Engineering Enrollments and Degrees Survey, 2008 Data (open access)

Nuclear Engineering Enrollments and Degrees Survey, 2008 Data

The survey includes degrees granted between September 1, 2007, and August 31, 2008, and fall 2008 enrollments. Thirty-one academic programs reported having nuclear engineering programs during 2008, and data was provided by all thirty-one programs.
Date: March 30, 2009
Creator: Analysis and Evaluation, Science Education Programs
Object Type: Report
System: The UNT Digital Library
International Population Assistance and Family Planning Programs: Issues for Congress (open access)

International Population Assistance and Family Planning Programs: Issues for Congress

This report discusses the U.S. population assistance issues, policy issues in the U.S. family planning debate, and U.S. funding levels.
Date: March 30, 2009
Creator: Blanchfield, Luisa
Object Type: Report
System: The UNT Digital Library

Master's Recital: 2009-03-30 - Rachel Kjar Brough, oboe

Access: Use of this item is restricted to the UNT Community
Recital presented at the UNT College of Music Recital Hall in partial fulfillment of the Master of Music (MM) degree.
Date: March 30, 2009
Creator: Brough, Rachel Kjar
Object Type: Sound
System: The UNT Digital Library
Low Temperature Combustion with Thermo-Chemical Recuperation to Maximize In-Use Engine Efficiency (open access)

Low Temperature Combustion with Thermo-Chemical Recuperation to Maximize In-Use Engine Efficiency

The key to overcome Low Temperature Combustion (LTC) load range limitations in reciprocating engines is based on proper control over the thermo-chemical properties of the in-cylinder charge. The studied alternative to achieve the required control of LTC is the use of two separate fuel streams to regulate timing and heat release at specific operational points, where the secondary fuel is a reformed product of the primary fuel in the tank. It is proposed in this report that the secondary fuel can be produced using exhaust heat and Thermo-Chemical Recuperation (TCR). TCR for reciprocating engines is a system that employs high efficiency recovery of sensible heat from engine exhaust gas and uses this energy to transform fuel composition. The recuperated sensible heat is returned to the engine as chemical energy. Chemical conversions are accomplished through catalytic and endothermic reactions in a specially designed reforming reactor. An equilibrium model developed by Gas Technology Institute (GTI) for heptane steam reforming was applied to estimate reformed fuel composition at different reforming temperatures. Laboratory results, at a steam/heptane mole ratio less than 2:1, confirm that low temperature reforming reactions, in the range of 550 K to 650 K, can produce 10-30% hydrogen (by volume, wet) …
Date: March 30, 2009
Creator: Clark, Nigel N.; Posada, Francisco; Bedick, Clinton; Pratapas, John; Kozlov, Aleksandr; Linck, Martin et al.
Object Type: Report
System: The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 89, No. 87, Ed. 1 Monday, March 30, 2009 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 89, No. 87, Ed. 1 Monday, March 30, 2009

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: March 30, 2009
Creator: Clements, Clifford E.
Object Type: Newspaper
System: The Portal to Texas History
Stress- and Chemistry-Mediated Permeability Enhancement/Degradation in Stimulated Critically-Stressed Fractures (open access)

Stress- and Chemistry-Mediated Permeability Enhancement/Degradation in Stimulated Critically-Stressed Fractures

This work has investigated the interactions between stress and chemistry in controlling the evolution of permeability in stimulated fractured reservoirs through an integrated program of experimentation and modeling. Flow-through experiments on natural and artificial fractures in Coso diorite have examined the evolution of permeability under paths of mean and deviatoric stresses, including the role of dissolution and precipitation. Models accommodating these behaviors have examined the importance of incorporating the complex couplings between stress and chemistry in examining the evolution of permeability in EGS reservoirs. This document reports the findings of experiment [1,2] and analysis [3,4], in four sequential chapters.
Date: March 30, 2009
Creator: Elsworth, Derek; Grader, Abraham S.; Marone, Chris; Halleck, Phillip; Rose, Peter; Faoro, Igor et al.
Object Type: Report
System: The UNT Digital Library
Subtask 7.1 - Strategic Studies (open access)

Subtask 7.1 - Strategic Studies

The Energy & Environmental Research Center (EERC) has recently completed 11 years of research through the Cooperative Agreement with the U.S. Department of Energy (DOE) National Energy Technology Laboratory (NETL) focused on fossil energy technology development and demonstration. To support a significant number of the different activities being considered within all of our research contracts with NETL, a subtask (7.1 Strategic Studies) was created to focus on small research efforts that came up throughout the year which would support an existing EERC-NETL project or would help to develop a new concept for inclusion in future efforts. Typical efforts conducted under this task were usually between $15,000 and $60,000 in scope and had time lines of less than 6 months. A limited number of larger studies were also conducted, generally at the direct request of NETL. Over the life of this task, 46 projects were conducted. These efforts ranged from quick experiments to gain fundamental knowledge to support a current effort, to literature reviews, to a few larger engineering efforts.
Date: March 30, 2009
Creator: Erickson, Thomas
Object Type: Report
System: The UNT Digital Library
Bioremediation of Petroleum Hydrocarbon Contaminated Sites (open access)

Bioremediation of Petroleum Hydrocarbon Contaminated Sites

Bioremediation has been widely applied in the restoration of petroleum hydrocarbon-contaminated. Parameters that may affect the rate and efficiency of biodegradation include temperature, moisture, salinity, nutrient availability, microbial species, and type and concentration of contaminants. Other factors can also affect the success of the bioremediation treatment of contaminants, such as climatic conditions, soil type, soil permeability, contaminant distribution and concentration, and drainage. Western Research Institute in conjunction with TechLink Environmental, Inc. and the U.S. Department of Energy conducted laboratory studies to evaluate major parameters that contribute to the bioremediation of petroleum-contaminated drill cuttings using land farming and to develop a biotreatment cell to expedite biodegradation of hydrocarbons. Physical characteristics such as soil texture, hydraulic conductivity, and water retention were determined for the petroleum hydrocarbon contaminated soil. Soil texture was determined to be loamy sand to sand, and high hydraulic conductivity and low water retention was observed. Temperature appeared to have the greatest influence on biodegradation rates where high temperatures (>50 C) favored biodegradation. High nitrogen content in the form of ammonium enhanced biodegradation as well did the presence of water near field water holding capacity. Urea was not a good source of nitrogen and has detrimental effects for bioremediation for …
Date: March 30, 2009
Creator: Fallgren, Paul
Object Type: Report
System: The UNT Digital Library
Melt spreading code assessment, modifications, and application to the EPR core catcher design. (open access)

Melt spreading code assessment, modifications, and application to the EPR core catcher design.

The Evolutionary Power Reactor (EPR) is under consideration by various utilities in the United States to provide base load electrical production, and as a result the design is undergoing a certification review by the U.S. Nuclear Regulatory Commission (NRC). The severe accident design philosophy for this reactor is based upon the fact that the projected power rating results in a narrow margin for in-vessel melt retention by external cooling of the reactor vessel. As a result, the design addresses ex-vessel core melt stabilization using a mitigation strategy that includes: (1) an external core melt retention system to temporarily hold core melt released from the vessel; (2) a layer of 'sacrificial' material that is admixed with the melt while in the core melt retention system; (3) a melt plug in the lower part of the retention system that, when failed, provides a pathway for the mixture to spread to a large core spreading chamber; and finally, (4) cooling and stabilization of the spread melt by controlled top and bottom flooding. The overall concept is illustrated in Figure 1.1. The melt spreading process relies heavily on inertial flow of a low-viscosity admixed melt to a segmented spreading chamber, and assumes that the …
Date: March 30, 2009
Creator: Farmer, M. T.
Object Type: Report
System: The UNT Digital Library
Digital Surveillance: The Communications Assistance for Law Enforcement Act (open access)

Digital Surveillance: The Communications Assistance for Law Enforcement Act

This report provides information about The Communications Assistance for Law Enforcement Act on Digital Surveillance. CALEA is intended to preserve the ability of law enforcement officials to conduct electronic surveillance effectively and efficiently.
Date: March 30, 2009
Creator: Figliola, Patricia Moloney
Object Type: Report
System: The UNT Digital Library
Campaign Finance: Potential Legislative and Policy Issues for the 111th Congress (open access)

Campaign Finance: Potential Legislative and Policy Issues for the 111th Congress

This report provides an overview of selected campaign finance policy issues that have received legislative attention, or have otherwise been prominent, and which could receive attention during the 111th Congress.
Date: March 30, 2009
Creator: Garrett, R. Sam
Object Type: Report
System: The UNT Digital Library
Solving large-scale sparse eigenvalue problems and linear systems of equations for accelerator modeling (open access)

Solving large-scale sparse eigenvalue problems and linear systems of equations for accelerator modeling

The solutions of sparse eigenvalue problems and linear systems constitute one of the key computational kernels in the discretization of partial differential equations for the modeling of linear accelerators. The computational challenges faced by existing techniques for solving those sparse eigenvalue problems and linear systems call for continuing research to improve on the algorithms so that ever increasing problem size as required by the physics application can be tackled. Under the support of this award, the filter algorithm for solving large sparse eigenvalue problems was developed at Stanford to address the computational difficulties in the previous methods with the goal to enable accelerator simulations on then the world largest unclassified supercomputer at NERSC for this class of problems. Specifically, a new method, the Hemitian skew-Hemitian splitting method, was proposed and researched as an improved method for solving linear systems with non-Hermitian positive definite and semidefinite matrices.
Date: March 30, 2009
Creator: Golub, Gene & Ko, Kwok
Object Type: Report
System: The UNT Digital Library
Electrical Resistivity and Seismic Surveys at the Nevada Test Site, Nevada, April 2007 (open access)

Electrical Resistivity and Seismic Surveys at the Nevada Test Site, Nevada, April 2007

In April 2007, the USGS collected direct-current (DC) electrical resistivity data and shear- (S) and compressional- (P) wave seismic data to provide new detail of previously mapped, overlapping fault splays at two administrative areas in the Nevada Test Site (NTS). In NTS Area 7, we collected two-dimensional DC resistivity data along a transect crossing the Yucca Fault parallel to, and between, two transects along which resistivity data were collected in a previous study in 2006. In addition, we collected three-dimensional DC resistivity data in a grid that overlies part of the 2007 transect. The DC resistivity data show that the fault has a footwall that is more conductive than the hanging wall and an along-strike progression of the fault in a location where overlapping splays are present. Co-located with the northernmost of the two 2006 DC resistivity transects, we acquired S- and P-wave seismic data for both reflection and refraction processing. The S-wave data are corrupted by large amounts of converted (P-wave) energy likely due to the abundance of fractured caliche in the shallow subsurface. The P-wave data show minimal reflected energy, but they show clear refracted first arrivals. We have inverted these first arrival times to determine P-wave seismic …
Date: March 30, 2009
Creator: Haines, Seth S.; Burton, Bethany L.; Sweetkind, Donald S. & Asch, Theodore H.
Object Type: Report
System: The UNT Digital Library

Ensemble: 2009-03-30 – Graduate Brass Showcase

Access: Use of this item is restricted to the UNT Community
Trombone studio concert performed at the UNT College of Music Winspear Hall.
Date: March 30, 2009
Creator: Kagarice, Vern
Object Type: Sound
System: The UNT Digital Library
Geochemical Study of Grab Samples Collected From BX Tank Farm Borehole C5989 (open access)

Geochemical Study of Grab Samples Collected From BX Tank Farm Borehole C5989

This is an analytical data report for sediments received from BX Tank Farm.
Date: March 30, 2009
Creator: Lindberg, Michael J.
Object Type: Report
System: The UNT Digital Library
Federal Evacuation Policy: Issues for Congress (open access)

Federal Evacuation Policy: Issues for Congress

This report discusses federal evacuation policy and analyzes potential lessons learned from the evacuation of individuals from Hurricane Katrina. Several issue areas that might arise concerning potential lawmaking and oversight on evacuation policy are also highlighted. This report will be updated as significant legislative or administrative changes occur.
Date: March 30, 2009
Creator: Lindsay, Bruce R.
Object Type: Report
System: The UNT Digital Library
FINAL REPORT WIND POWER WARM SPRINGS RESERVATION TRIBAL LANDS DOE GRANT NUMBER DE-FG36-07GO17077 SUBMITTED BY WARM SPRINGS POWER & WATER ENTERPRISES A CORPORATE ENTITY OF THE CONFEDERATED TRIBES OF WARM SPRINGS WARM SPRINGS, OREGON (open access)

FINAL REPORT WIND POWER WARM SPRINGS RESERVATION TRIBAL LANDS DOE GRANT NUMBER DE-FG36-07GO17077 SUBMITTED BY WARM SPRINGS POWER & WATER ENTERPRISES A CORPORATE ENTITY OF THE CONFEDERATED TRIBES OF WARM SPRINGS WARM SPRINGS, OREGON

Wind Generation Feasibility Warm Springs Power and Water Enterprises (WSPWE) is a corporate entity owned by the Confederated Tribes of the Warm Springs Reservation, located in central Oregon. The organization is responsible for managing electrical power generation facilities on tribal lands and, as part of its charter, has the responsibility to evaluate and develop renewable energy resources for the Confederated Tribes of Warm Springs. WSPWE recently completed a multi-year-year wind resource assessment of tribal lands, beginning with the installation of wind monitoring towers on the Mutton Mountains site in 2003, and collection of on-site wind data is ongoing. The study identified the Mutton Mountain site on the northeastern edge of the reservation as a site with sufficient wind resources to support a commercial power project estimated to generate over 226,000 MWh per year. Initial estimates indicate that the first phase of the project would be approximately 79.5 MW of installed capacity. This Phase 2 study expands and builds on the previously conducted Phase 1 Wind Resource Assessment, dated June 30, 2007. In order to fully assess the economic benefits that may accrue to the Tribes through wind energy development at Mutton Mountain, a planning-level opinion of probable cost was performed …
Date: March 30, 2009
Creator: Manion, Jim; Lofting, Michael; Sando, Wil; Leslie, Emily & Goff, Randy
Object Type: Report
System: The UNT Digital Library
Pyramidal and Chiral Groupings of Gold Nanocrystals Assembled Using DNA Scaffolds (open access)

Pyramidal and Chiral Groupings of Gold Nanocrystals Assembled Using DNA Scaffolds

Nanostructures constructed from metal and semiconductor nanocrystals conjugated to, and organized by DNA are an emerging class of material with collective optical properties. We created discrete pyramids of DNA with gold nanocrystals at the tips. By taking small angle X-ray scattering (SAXS) measurments from solutions of these pyramids we confirmed that this pyramidal geometry creates structures which are more rigid in solution than linear DNA. We then took advantage of the tetrahedral symmetry to demonstrate construction of chiral nanostructures.
Date: March 30, 2009
Creator: Mastroianni, Alexander; Claridge, Shelley & Alivisatos, A. Paul
Object Type: Article
System: The UNT Digital Library
Energy Security and Restoration Exercise Program/Best Practices and Information Sharing (open access)

Energy Security and Restoration Exercise Program/Best Practices and Information Sharing

The first year of this cooperative agreement focused on the following elements: curriculum development and presentation, curriculum maintenance, enhancements, and effectiveness, and smart card initiative. During the second year of this grant, with redirection from DOE, the IUOE modified its mission statement under the cooperative agreement. It states: 'The mission of the IUOE is to provide expertise to provide best practices, information sharing, and develop scenarios and conduct exercises ranging in size and complexity from table top to national level to prepare all stakeholders to protect and restore energy infrastructure should an event, terrorist or natural, occur'. The Program developed a number of products under this Cooperative Agreement. These products include: FOSTER (Facility Operations Safety Training Event Response) Curriculum and Training Models, Alternative Energy Supply - Generators Training Module, Liquefied Natural Gas Training Module, Education Program - Distributed Generations, Compendium of Resources and References, Energy Security and Restoration Training Manual, Manual of Situations and Scenarios Developed for Emergency Exercises, Manual of Best Practices/Lessons Learned for Energy Load Management, Training Plan, Strategic Information and Exercise Plan, National Certification Plan Report, and a Smart Card Project Report.
Date: March 30, 2009
Creator: McCabe, Barbara & Kovach, John
Object Type: Report
System: The UNT Digital Library
Quarkyonic Matter and the Revised Phase Diagram of QCD (open access)

Quarkyonic Matter and the Revised Phase Diagram of QCD

At high baryon number density, it has been proposed that a new phase of QCD matter controlsthe physics. This matter is confining but can have densities much larger than 3QCD. Its existenceis argued from large Nc approximations, and model computations. It is approximately chirallysymmetric.
Date: March 30, 2009
Creator: McLerran, L.
Object Type: Article
System: The UNT Digital Library
2008 Annual Summary Report for the Area 3 and Area 5 Radioactive Waste Management Sites at the Nevada Test Site, Nye County, Nevada: Review of the Performance Assessments and Composite Analyses (open access)

2008 Annual Summary Report for the Area 3 and Area 5 Radioactive Waste Management Sites at the Nevada Test Site, Nye County, Nevada: Review of the Performance Assessments and Composite Analyses

The Maintenance Plan for the Performance Assessments and Composite Analyses for the Area 3 and Area 5 Radioactive Waste Management Sites at the Nevada Test Site requires an annual review to assess the adequacy of the Performance Assessments (PAs) and Composite Analyses (CAs) for each of the facilities, with the results submitted annually to U.S. Department of Energy (DOE) Headquarters. The Disposal Authorization Statements for the Area 3 and Area 5 Radioactive Waste Management Sites (RWMSs) also require that such reviews be made and that secondary or minor unresolved issues be tracked and addressed as part of the maintenance plan. The U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office (NNSA/NSO) performed an annual review in fiscal year (FY) 2008 by evaluating operational factors and research results that impact the continuing validity of the PAs and CAs. This annual summary report presents data and conclusions from the FY 2008 review, and determines the adequacy of the PAs and CAs. Operational factors (e.g., waste forms and containers, facility design, and waste receipts), closure plans, monitoring results, and research and development (R&D) activities were reviewed to determine the adequacy of the PAs. Likewise, the environmental restoration activities at the Nevada …
Date: March 30, 2009
Creator: National Security Technologies, LLC
Object Type: Report
System: The UNT Digital Library
North Korea's Nuclear Weapons Development and Diplomacy (open access)

North Korea's Nuclear Weapons Development and Diplomacy

This report provides background information on the nuclear negotiations over North Korea's nuclear weapons program. Since August 2003, negotiations over North Korea's nuclear weapons programs have involved six governments: the United States, North Korea, China, South Korea, Japan, and Russia.
Date: March 30, 2009
Creator: Niksch, Larry A.
Object Type: Report
System: The UNT Digital Library
Observations on Faults and Associated Permeability Structures in Hydrogeologic Units at the Nevada Test Site (open access)

Observations on Faults and Associated Permeability Structures in Hydrogeologic Units at the Nevada Test Site

Observational data on Nevada Test Site (NTS) faults were gathered from a variety of sources, including surface and tunnel exposures, core samples, geophysical logs, and down-hole cameras. These data show that NTS fault characteristics and fault zone permeability structures are similar to those of faults studied in other regions. Faults at the NTS form complex and heterogeneous fault zones with flow properties that vary in both space and time. Flow property variability within fault zones can be broken down into four major components that allow for the development of a simplified, first approximation model of NTS fault zones. This conceptual model can be used as a general guide during development and evaluation of groundwater flow and contaminate transport models at the NTS.
Date: March 30, 2009
Creator: Prothro, Lance B.; Drellack, Sigmund L.; Haugstad, Dawn N.; Huckins-Gang, Heather E. & Townsend, Margaret J.
Object Type: Report
System: The UNT Digital Library