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2 x 2 Polyethylene Reflected and Moderated Highly Enriched Uranium System with Rhenium
The 2 × 2 array HEU-Re experiment was performed on the Planet universal critical assembly machine on November 4th, 2003 at the Los Alamos Critical Experiments Facility (LACEF) at Los Alamos National Laboratory (LANL). For this experiment, there were 10 ½ units, each full unit containing four HEU foils and two rhenium foils. The top unit contained only two HEU foils and two rhenium foils. A total of 42 HEU foils were used for this experiment. Rhenium is a desirable cladding material for space nuclear power applications. This experiment consisted of HEU foils interleaved with rhenium foils and is moderated and reflected by polyethylene plates. A unit consisted of a polyethylene plate, which has a recess for rhenium foils, and four HEU foils in a single layer in the top recess of each polyethylene plate. The Planet universal criticality assembly machine has been previously used in experiments containing HEU foils interspersed with SiO2 (HEU-MET-THERM-001), Al (HEU-MET-THERM-008), MgO (HEU-MET-THERM-009), Gd foils (HEU-MET-THERM-010), 2 × 2 × 26 Al (HEU-MET-THERM-012), Fe (HEU-MET-THERM-013 and HEU-MET-THERM-015), 2 × 2 × 23 SiO2 (HEU-MET-THERM-014), 2 × 2 × 11 hastalloy plates (HEU-MET-THERM-016), and concrete (HEU-MET-THERM-018). The 2 × 2 array of HEU-Re is considered acceptable …
Date:
September 1, 2010
Creator:
Ellis, A. Nichole; Hutchinson, Jesson; Bess, John D.; Polyakov, Dmitry N.; Glushkov, Evgeny S. & Glushkov, Alexey E.
Object Type:
Report
System:
The UNT Digital Library
100-NR-2 Apatite Treatability Test: High-Concentration Calcium-Citrate-Phosphate Solution Injection for In Situ Strontium-90 Immobilization
Following an evaluation of potential strontium-90 (90Sr) treatment technologies and their applicability under 100-NR-2 hydrogeologic conditions, the U.S. Department of Energy (DOE), Fluor Hanford, Inc. (now CH2M Hill Plateau Remediation Company [CHPRC]), Pacific Northwest National Laboratory, and the Washington State Department of Ecology agreed that the long-term strategy for groundwater remediation at the 100-N Area should include apatite as the primary treatment technology. This agreement was based on results from an evaluation of remedial alternatives that identified the apatite permeable reactive barrier (PRB) technology as the approach showing the greatest promise for reducing 90Sr flux to the Columbia River at a reasonable cost. This letter report documents work completed to date on development of a high-concentration amendment formulation and initial field-scale testing of this amendment solution.
Date:
September 1, 2010
Creator:
Vermeul, Vincent R.; Fritz, Brad G.; Fruchter, Jonathan S.; Szecsody, James E. & Williams, Mark D.
Object Type:
Report
System:
The UNT Digital Library
2006 National Ambient Air Quality Standards (NAAQS) for Fine Particulate Matter (PM2.5): Designating Nonattainment Areas
This report summarizes and describes the EPA's (Environmental Protection Agency) final revisions to the NAAQS (National Ambient Air Quality Standards). The summary also explores how the revisions are contentious in certain areas that may not be meeting those standards which materializes as congressional oversight.
Date:
September 7, 2010
Creator:
Esworthy, Robert
Object Type:
Report
System:
The UNT Digital Library
2009 Groundwater Monitoring Report Central Nevada Test Area, Corrective Action Unit 443
This report presents the 2009 groundwater monitoring results collected by the U.S. Department of Energy (DOE) Office of Legacy Management (LM) for the Central Nevada Test Area (CNTA) Subsurface Corrective Action Unit (CAU) 443. Responsibility for the environmental site restoration of CNTA was transferred from the DOE Office of Environmental Management to LM on October 1, 2006. The environmental restoration process and corrective action strategy for CAU 443 are conducted in accordance with the Federal Facility Agreement and Consent Order entered into by DOE, the U.S. Department of Defense, and the State of Nevada. The corrective action strategy for the site includes proof-of-concept monitoring in support of site closure. This report summarizes investigation activities associated with CAU 443 that were conducted at the site from October 2008 through December 2009. It also represents the first year of the enhanced monitoring network and begins the new 5-year proof-of-concept monitoring period that is intended to validate the compliance boundary
Date:
September 1, 2010
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
2009 Site Environmental Report
Each year, Brookhaven National Laboratory (BNL) prepares an annual Site Environmental Report (SER) in accordance with DOE Order 231.1A, Environment, Safety and Health Reporting of the U.S. Department of Energy. The report is written to inform the public, regulators, employees, and other stakeholders of BNL's environmental performance during the calendar year in review. The SER summarizes environmental data; environmental management performance; compliance with applicable DOE, federal, state, and local regulations; and compliance, restoration, and surveillance monitoring program performance. BNL has prepared annual SERs since 1971 and has documented nearly all of its environmental history since the Laboratory's inception in 1947. The report is available in print and as a downloadable file on the BNL web page at http://www.bnl.gov/ewms/ser/. A summary of the SER is also prepared each year to provide a general overview of the report, and is distributed with a CD of the full report.
Date:
September 30, 2010
Creator:
Ratel, K.M. & Laboratory, Brookhaven National
Object Type:
Report
System:
The UNT Digital Library
The 2010 Oil Spill: Natural Resource Damage Assessment Under the Oil Pollution Act
The 2010 Deepwater Horizon oil spill leaked an estimated 4.1 million barrels of oil into the Gulf of Mexico, damaging the waters, shores, and marshes, and the fish and wildlife that live there. When resources in the public trust are harmed by contamination, federal, state, foreign, and tribal governments may seek compensation for damage to natural resources under certain laws. This is done in two steps: first, by assessing the harm; then, by determining how and what restoration will take place. Compensation for natural resource damage is intended to restore the natural resources to their condition before the damage and to compensate the public for the lost use of those resources. This report discusses legislation that provides a framework for assessing and mitigating the damage caused by such spills.
Date:
September 8, 2010
Creator:
Alexander, Kristina
Object Type:
Report
System:
The UNT Digital Library
2010 Remediation Effectiveness Report for the U.S. Department of Energy Oak Ridge Reservation, Oak Ridge, Tennessee - Data and Evaluations
Under the requirements of the Oak Ridge Reservation (ORR) Federal Facility Agreement (FFA) established between the U.S. Department of Energy (DOE), the U.S. Environmental Protection Agency, (EPA) and the Tennessee Department of Environment and Conservation (TDEC) in 1992, all environmental restoration activities on the ORR are performed in accordance with the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA). Since the 1990s, the environmental restoration activities have experienced a gradual shift from characterization to remediation. As this has occurred, it has been determined that the assessment of the individual and cumulative performance of all ORR CERCLA remedial actions (RAs) is most effectively tracked in a single document. The Remediation Effectiveness Report (RER) is an FFA document intended to collate all ORR CERCLA decision requirements, compare pre- and post-remediation conditions at CERCLA sites, and present the results of any required post-decision remediation effectiveness monitoring. First issued in 1997, the RER has been reissued annually to update the performance histories of completed actions and to add descriptions of new CERCLA actions. Monitoring information used in the 2010 RER to assess remedy performance was collected and/or compiled by DOE's Water Resources Restoration Program (WRRP). Only data used to assess performance of …
Date:
September 1, 2010
Creator:
Bechtel Jacobs
Object Type:
Report
System:
The UNT Digital Library
2010 Resubmission of the U.S.-Russia Nuclear Cooperation Agreement: Further Actions Needed by State and Other Agencies to Improve the Review of the Classified Nuclear Proliferation Assessment
Correspondence issued by the Government Accountability Office with an abstract that begins "On May 10, 2010, the President resubmitted to Congress a proposed Agreement Between the Government of the United States of America and the Government of the Russian Federation for Cooperation in the Field of Peaceful Uses of Nuclear Energy (henceforth referred to as the U.S.-Russia nuclear cooperation agreement or the agreement) in accordance with the review requirements established under section 123 of the Atomic Energy Act of 1954 (AEA), as amended. The proposed agreement with Russia would, among other things, establish the legal basis for the Department of Energy (DOE) to work with Russia on large-scale development of nuclear energy. The United States has 25 agreements in force for peaceful nuclear cooperation with foreign countries, the European Atomic Energy Community (EURATOM), the International Atomic Energy Agency (IAEA), and Taiwan. Such agreements provide the framework and authorization for civilian nuclear cooperation but do not guarantee that cooperation will take place or that nuclear material or technology transfers will occur. On May 13, 2008, President Bush originally submitted the agreement to Congress with the statutorily required presidential determination that this agreement would promote, and would not constitute an unreasonable risk …
Date:
September 21, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
2010 River Corridor Closure Contractor Revegetation and Mitigation Monitoring Report
This report documents eh status of revegetation projects and natural resources mitigation efforts conducted for remediated waste sites and other activities associated with CERLA cleanup of National Priorities List waste sites at Hanford. This report contains vegetation monitoring data that were collected in the spring and summer of 2010 from the River Corridor Closure Contract’s revegetation and mitigation areas on the Hanford Site.
Date:
September 30, 2010
Creator:
Lindsey, C. T. & Johnson, A. L.
Object Type:
Report
System:
The UNT Digital Library
2D Thermal Hydraulic Analysis and Benchmark in Support of HFIR LEU Conversion using COMSOL
The research documented herein was funded by a research contract between the Research Reactors Division (RRD) of Oak Ridge National Laboratory (ORNL) and the University of Tennessee, Knoxville (UTK) Mechanical, Aerospace and Biomedical Engineering Department (MABE). The research was governed by a statement of work (SOW) which clearly defines nine specific tasks. This report is outlined to follow and document the results of each of these nine specific tasks. The primary goal of this phase of the research is to demonstrate, through verification and validation methods, that COMSOL is a viable simulation tool for thermal-hydraulic modeling of the High Flux Isotope Reactor (HFIR) core. A secondary goal of this two-dimensional phase of the research is to establish methodology and data base libraries that are also needed in the full three-dimensional COMSOL simulation to follow. COMSOL version 3.5a was used for all of the models presented throughout this report.
Date:
September 1, 2010
Creator:
Freels, James D; Bodey, Isaac T; Lowe, Kirk T & Arimilli, Rao V
Object Type:
Report
System:
The UNT Digital Library
3D Technology for intelligent trackers
At Super-LHC luminosity it is expected that the standard suite of level 1 triggers for CMS will saturate. Information from the tracker will be needed to reduce trigger rates to satisfy the level 1 bandwidth. Tracking trigger modules which correlate information from closely-spaced sensor layers to form an on-detector momentum filter are being developed by several groups. We report on a trigger module design which utilizes three dimensional integrated circuit technology incorporating chips which are connected both to the top and bottom sensor, providing the ability to filter information locally. A demonstration chip, the VICTR, has been submitted to the Chartered/Tezzaron two-tier 3D run coordinated by Fermilab. We report on the 3D design concept, the status of the VICTR chip and associated sensor integration utilizing oxide bonding.
Date:
September 1, 2010
Creator:
Lipton, Ronald
Object Type:
Article
System:
The UNT Digital Library
The Ab-Initio No-Core Shell Model and Light Nuclei
None
Date:
September 3, 2010
Creator:
Forssen, C; Navratil, P & Quaglioni, S
Object Type:
Article
System:
The UNT Digital Library
Ab Initio Theory of Light-Ion Reactions
None
Date:
September 14, 2010
Creator:
Navratil, P; Quaglioni, S & Roth, R
Object Type:
Article
System:
The UNT Digital Library
The ABCs of Christian Money Management - Part 2.
Lecture given Tuesday, September 21, 2010, 9:30 AM at Abilene Christian University: "In this upbeat, practical presentation, Steve shows how to reverse money failure, beat credit card debt, restore romance in marriage, use nine keys for a successful spending plan, and keep the wolf from your door. Come regain a 'God heart' with your money."
Date:
September 21, 2010
Creator:
Diggs, Steve
Object Type:
Sound
System:
The Portal to Texas History
The ABCs of Christian Money Management - Part 3.
Lecture given Wednesday, September 22, 2010, 10:00 AM at Abilene Christian University: "In this upbeat, practical presentation, Steve shows how to reverse money failure, beat credit card debt, restore romance in marriage, use nine keys for a successful spending plan, and keep the wolf from your door. Come regain a 'God heart' with your money."
Date:
September 22, 2010
Creator:
Diggs, Steve
Object Type:
Sound
System:
The Portal to Texas History
Accelerating Commercialization of Algal Biofuels Through Partnerships (Brochure)
This brochure describes NREL's algal biofuels research capabilities and partnership opportunities.
Date:
September 1, 2010
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Acceptance sampling using judgmental and randomly selected samples
We present a Bayesian model for acceptance sampling where the population consists of two groups, each with different levels of risk of containing unacceptable items. Expert opinion, or judgment, may be required to distinguish between the high and low-risk groups. Hence, high-risk items are likely to be identifed (and sampled) using expert judgment, while the remaining low-risk items are sampled randomly. We focus on the situation where all observed samples must be acceptable. Consequently, the objective of the statistical inference is to quantify the probability that a large percentage of the unsampled items in the population are also acceptable. We demonstrate that traditional (frequentist) acceptance sampling and simpler Bayesian formulations of the problem are essentially special cases of the proposed model. We explore the properties of the model in detail, and discuss the conditions necessary to ensure that required samples sizes are non-decreasing function of the population size. The method is applicable to a variety of acceptance sampling problems, and, in particular, to environmental sampling where the objective is to demonstrate the safety of reoccupying a remediated facility that has been contaminated with a lethal agent.
Date:
September 1, 2010
Creator:
Sego, Landon H.; Shulman, Stanley A.; Anderson, Kevin K.; Wilson, John E.; Pulsipher, Brent A. & Sieber, W. Karl
Object Type:
Report
System:
The UNT Digital Library
Accountable Science: The COMPETES Act Needs to Demonstrate an Accountability Attitude
Article on the U.S. National Science Foundation's (NSF) Broader Impacts Merit Review Criterion in relation to the America COMPETES Reauthorization Act of 2010.
Date:
September 16, 2010
Creator:
Holbrook, J. Britt
Object Type:
Article
System:
The UNT Digital Library
Accuracy Based Generation of Thermodynamic Properties for Light Water in RELAP5-3D
RELAP5-3D interpolates to obtain thermodynamic properties for use in its internal calculations. The accuracy of the interpolation was determined for the original steam tables currently used by the code. This accuracy evaluation showed that the original steam tables are generally detailed enough to allow reasonably accurate interpolations in most areas needed for typical analyses of nuclear reactors cooled by light water. However, there were some regions in which the original steam tables were judged to not provide acceptable accurate results. Revised steam tables were created that used a finer thermodynamic mesh between 4 and 21 MPa and 530 and 640 K. The revised steam tables solved most of the problems observed with the original steam tables. The accuracies of the original and revised steam tables were compared throughout the thermodynamic grid.
Date:
September 1, 2010
Creator:
Davis, Cliff B.
Object Type:
Article
System:
The UNT Digital Library
Acoustic Doppler Current Profiler Surveys of Velocity Downstream of Albeni Falls Dam
The U.S. Army Corps of Engineers (USACE), Seattle District, is studying the potential to locate fish bypass systems at Albeni Falls Dam. The USACE requested Pacific Northwest National Laboratory (PNNL) to survey velocity magnitude and direction in the dam tailrace. The empirical data collected will be used to support future numerical modeling, physical modeling, and evaluation of fish bypass system alternatives. In May 2010, PNNL conducted velocity surveys of the Albeni Falls Dam using a boat-mounted acoustic Doppler current profiler. The surveys were conducted over three days (May 25 through 27). During the survey period, total river discharge at the dam varied between 30.2 and 31.0 kcfs. A small amount of spill discharge, 2 kcfs, was present on two days (May 26 and 27). This report presents data plots showing measured velocity direction and magnitude averaged over the entire depth and over 5-ft depth increments from 5 to 30 ft.
Date:
September 30, 2010
Creator:
Perkins, William A.; Titzler, P. Scott; Richmond, Marshall C.; Serkowski, John A.; Kallio, Sara E. & Bellgraph, Brian J.
Object Type:
Report
System:
The UNT Digital Library
Actinic imaging and evaluation of phase structures on EUV lithography masks
The authors describe the implementation of a phase-retrieval algorithm to reconstruct phase and complex amplitude of structures on EUV lithography masks. Many native defects commonly found on EUV reticles are difficult to detect and review accurately because they have a strong phase component. Understanding the complex amplitude of mask features is essential for predictive modeling of defect printability and defect repair. Besides printing in a stepper, the most accurate way to characterize such defects is with actinic inspection, performed at the design, EUV wavelength. Phase defect and phase structures show a distinct through-focus behavior that enables qualitative evaluation of the object phase from two or more high-resolution intensity measurements. For the first time, phase of structures and defects on EUV masks were quantitatively reconstructed based on aerial image measurements, using a modified version of a phase-retrieval algorithm developed to test optical phase shifting reticles.
Date:
September 28, 2010
Creator:
Mochi, Iacopo; Goldberg, Kenneth & Huh, Sungmin
Object Type:
Article
System:
The UNT Digital Library
Adagio 4.18 user's guide.
Adagio is a Lagrangian, three-dimensional, implicit code for the analysis of solids and structures. It uses a multi-level iterative solver, which enables it to solve problems with large deformations, nonlinear material behavior, and contact. It also has a versatile library of continuum and structural elements, and an extensive library of material models. Adagio is written for parallel computing environments, and its solvers allow for scalable solutions of very large problems. Adagio uses the SIERRA Framework, which allows for coupling with other SIERRA mechanics codes. This document describes the functionality and input structure for Adagio.
Date:
September 1, 2010
Creator:
Spencer, Benjamin Whiting
Object Type:
Report
System:
The UNT Digital Library
Adult Children and Aging Parents: The Church's Response to Families Dealing with Alzheimer's
Lecture given Wednesday, September 22, 2010, 9:00 AM at Abilene Christian University: "Explore some guilt-producing misconceptions about aging parents considered in light of the Bible. This class makes suggestions about: communication, what aging parents want, promises to avoid, and why aging parents can seem mean-spirited."
Date:
September 22, 2010
Creator:
Pruett, Charlie
Object Type:
Sound
System:
The Portal to Texas History
Adult Children and Aging Parents: Why is my mother driving me crazy? - Part 1
Lecture given Tuesday, September 21, 2010, 8:30 AM at Abilene Christian University: "Explore some guilt-producing misconceptions about aging parents considered in light of the Bible. This class makes suggestions about: communication, what aging parents want, promises to avoid, and why aging parents can seem mean-spirited."
Date:
September 21, 2010
Creator:
Pruett, Charlie
Object Type:
Sound
System:
The Portal to Texas History