The 2010 Oil Spill: Criminal Liability Under Wildlife Laws (open access)

The 2010 Oil Spill: Criminal Liability Under Wildlife Laws

This report highlights the possible ways to prosecute those who caused the 2010 oil spill in the Gulf of Mexico. The report suggests that prosecution can be done under laws such as the ESA (Endangered Species Act) or the MMPA (Marine Mammal Protection Act) both of which provide for civil and criminal punishment. However, the most likely law to be used will be the MBTA (Migratory Bird Treatment Act) which makes it a crime to kill migratory birds. The report suggests that the MBTA would be the best method to prosecute for criminal liability.
Date: August 31, 2010
Creator: Alexander, Kristina
Object Type: Report
System: The UNT Digital Library
Model Predictive Control of Integrated Gasification Combined Cycle Power Plants (open access)

Model Predictive Control of Integrated Gasification Combined Cycle Power Plants

The primary project objectives were to understand how the process design of an integrated gasification combined cycle (IGCC) power plant affects the dynamic operability and controllability of the process. Steady-state and dynamic simulation models were developed to predict the process behavior during typical transients that occur in plant operation. Advanced control strategies were developed to improve the ability of the process to follow changes in the power load demand, and to improve performance during transitions between power levels. Another objective of the proposed work was to educate graduate and undergraduate students in the application of process systems and control to coal technology. Educational materials were developed for use in engineering courses to further broaden this exposure to many students. ASPENTECH software was used to perform steady-state and dynamic simulations of an IGCC power plant. Linear systems analysis techniques were used to assess the steady-state and dynamic operability of the power plant under various plant operating conditions. Model predictive control (MPC) strategies were developed to improve the dynamic operation of the power plants. MATLAB and SIMULINK software were used for systems analysis and control system design, and the SIMULINK functionality in ASPEN DYNAMICS was used to test the control strategies on …
Date: August 31, 2010
Creator: Bequette, B. Wayne & Mahapatra, Priyadarshi
Object Type: Report
System: The UNT Digital Library
Immigration Legislation and Issues in the 111th Congress (open access)

Immigration Legislation and Issues in the 111th Congress

Report detailing issues and legislative concerns regarding immigration during the 111th Congress, with a focus on comprehensive reform.
Date: August 31, 2010
Creator: Bruno, Andorra; Ester, Karma; Haddal, Chad C.; Kim, Yule; Lee, Margaret Mikyung; Siskin, Alison et al.
Object Type: Report
System: The UNT Digital Library
Towards laboratory-produced relativistic electron-positron pair-plasmas (open access)

Towards laboratory-produced relativistic electron-positron pair-plasmas

Relativistic pair-plasmas and jets are believed to exist in many astrophysical objects and are often invoked to explain energetic phenomena related to Gamma Ray Bursts and Black Holes. On earth, positrons from radioactive isotopes or accelerators are used extensively at low energies (sub-MeV) in areas related to surface science positron emission tomography and basic antimatter science. Experimental platforms capable of producing the high-temperature pair-plasma and high-flux jets required to simulate astrophysical positron conditions have so far been absent. In the last few years, we performed extensive experiments generating positrons with intense lasers where we found that relativistic electron and positron jets are produced by irradiating a solid gold target with an intense picosecond laser pulse. The positron temperatures in directions parallel and transverse to the beam both exceeded 0.5 MeV, and the density of electrons and positrons in these jets are of order 10{sup 16} cm{sup -3} and 10{sup 13} cm{sup -3}, respectively. With the advent of high-energy ultra-short laser pulses, we expect that a charge-neutral, relativistic pair-plasma is achievable, a novel regime of laboratory-produced hot dense matter. This talk will present some details of the laser-produced pair-plasma experiments.
Date: August 31, 2010
Creator: Chen, H.; Wilks, S. C.; Meyerhofer, D. D.; Beiersdorfer, P.; Cauble, R.; Dollar, F. et al.
Object Type: Article
System: The UNT Digital Library
Transparent Ceramic Scintillators for Gamma Spectroscopy and Radiography (open access)

Transparent Ceramic Scintillators for Gamma Spectroscopy and Radiography

None
Date: August 31, 2010
Creator: Cherepy, N. J.; Kuntz, J. D.; Seeley, Z. M.; Fisher, S. E.; Drury, O. B.; Sturm, B. W. et al.
Object Type: Article
System: The UNT Digital Library
Systematic Modification of Monolignol Pathway Gene Expression for Improved Lignocellulose Utilization (open access)

Systematic Modification of Monolignol Pathway Gene Expression for Improved Lignocellulose Utilization

Abstracts and brief summaries are provided for six published articles and seventeen poster and oral presentations at scientific meetings.
Date: August 31, 2010
Creator: Dixon, Richard A.
Object Type: Report
System: The UNT Digital Library
Phase-space Dynamics of Runaway Electrons In Tokamaks (open access)

Phase-space Dynamics of Runaway Electrons In Tokamaks

The phase-space dynamics of runaway electrons is studied, including the influence of loop voltage, radiation damping, and collisions. A theoretical model and a numerical algorithm for the runaway dynamics in phase space are developed. Instead of standard integrators, such as the Runge-Kutta method, a variational symplectic integrator is applied to simulate the long-term dynamics of a runaway electron. The variational symplectic integrator is able to globally bound the numerical error for arbitrary number of time-steps, and thus accurately track the runaway trajectory in phase space. Simulation results show that the circulating orbits of runaway electrons drift outward toward the wall, which is consistent with experimental observations. The physics of the outward drift is analyzed. It is found that the outward drift is caused by the imbalance between the increase of mechanical angular momentum and the input of toroidal angular momentum due to the parallel acceleration. An analytical expression of the outward drift velocity is derived. The knowledge of trajectory of runaway electrons in configuration space sheds light on how the electrons hit the first wall, and thus provides clues for possible remedies.
Date: August 31, 2010
Creator: Guan, Xiaoyin; Qin, Hong & Fisch, Nathaniel J.
Object Type: Report
System: The UNT Digital Library
High Quality Down Lighting Luminaire with 73% Overall System Efficiency (open access)

High Quality Down Lighting Luminaire with 73% Overall System Efficiency

This report summarizes work to develop a high flux, high efficiency LED-based downlight at OSRAM SYLVANIA under US Department of Energy contract DE-FC26-08NT01582. A new high power LED and electronic driver were developed for these downlights. The LED achieved 100 lumens per watt efficacy and 1700 lumen flux output at a correlated color temperature of 3500K. The driver had 90% electrical conversion efficiency while maintaining excellent power quality with power factor >0.99, and total harmonic distortion <10%. Two styles of downlights using the LED and driver were shown to exceed the project targets for steady-state luminous efficacy and flux of 70 lumens per watt and 1300 lumens, respectively. Compared to similar existing downlights using compact fluorescent or LED sources, these downlights had much higher efficacy at nearly the same luminous flux.
Date: August 31, 2010
Creator: Harrison, Robert; Allen, Steven C.; Bernier, Joseph & Harrison, Robert
Object Type: Report
System: The UNT Digital Library
Jennings Demonstration PLant (open access)

Jennings Demonstration PLant

Verenium operated a demonstration plant with a capacity to produce 1.4 million gallons of cellulosic ethanol from agricultural resiues for about two years. During this time, the plant was able to evaluate the technical issues in producing ethanol from three different cellulosic feedstocks, sugar cane bagasse, energy cane, and sorghum. The project was intended to develop a better understanding of the operating parameters that would inform a commercial sized operation. Issues related to feedstock variability, use of hydrolytic enzymes, and the viability of fermentative organisms were evaluated. Considerable success was achieved with pretreatment processes and use of enzymes but challenges were encountered with feedstock variability and fermentation systems. Limited amounts of cellulosic ethanol were produced.
Date: August 31, 2010
Creator: Heissner, Russ
Object Type: Report
System: The UNT Digital Library
Tcap Hydrogen Isotope Separation Using Palladium and Inverse Columns (open access)

Tcap Hydrogen Isotope Separation Using Palladium and Inverse Columns

The Thermal Cycling Absorption Process (TCAP) was further studied with a new configuration. Previous configuration used a palladium packed column and a plug flow reverser (PFR). This new configuration uses an inverse column to replace the PFR. The goal was to further improve performance. Both configurations were experimentally tested. The results showed that the new configuration increased the throughput by a factor of more than 2.
Date: August 31, 2010
Creator: Heung, L.; Sessions, H. & Xiao, S.
Object Type: Article
System: The UNT Digital Library
Phasing beams with different dispersions and application to the Petawatt-class beamline at the National Ignition Facility (open access)

Phasing beams with different dispersions and application to the Petawatt-class beamline at the National Ignition Facility

None
Date: August 31, 2010
Creator: Homoelle, D; Crane, J K; Shverdin, M; Haefner, C L & Siders, C W
Object Type: Article
System: The UNT Digital Library
PRIDE Surveillance Projects Data Packaging Project Information Package Specification Version 1.1 (open access)

PRIDE Surveillance Projects Data Packaging Project Information Package Specification Version 1.1

Information Package Specification version 1.1 describes an XML document format called an information package that can be used to store information in information management systems and other information archives. An information package consists of package information, the context required to understand and use that information, package metadata that describes the information, and XML signatures that protect the information. The information package described in this specification was designed to store Department of Energy (DOE) and National Nuclear Security Administration (NNSA) information and includes the metadata required for that information: a unique package identifier, information marking that conforms to DOE and NNSA requirements, and access control metadata. It is an implementation of the Open Archival Information System (OAIS) Reference Model archival information package tailored to meet NNSA information storage requirements and designed to be used in the computing environments at the Y-12 National Security Complex and at other NNSA sites.
Date: August 31, 2010
Creator: Kelleher, D. M.; Shipp, R. L. & Mason, J. D.
Object Type: Report
System: The UNT Digital Library
A Study of a Diesel Engine Based Micro-CHP System (open access)

A Study of a Diesel Engine Based Micro-CHP System

This project, funded by New York State Energy Research and Development Agency (NYSERDA), investigated the potential for an oil-fired combined heat and power system (micro-CHP system) for potential use in residences that use oil to heat their homes. Obviously, this requires the power source to be one that uses heating oil (diesel). The work consisted of an experimental study using a diesel engine and an analytical study that examined potential energy savings and benefits of micro-CHP systems for 'typical' locations in New York State. A search for a small diesel engine disclosed that no such engines were manufactured in the U.S. A single cylinder engine manufactured in Germany driving an electric generator was purchased for the experimental work. The engine was tested using on-road diesel fuel (15 ppm sulfur), and biodiesel blends. One of the main objectives was to demonstrate the possibility of operation in the so-called HCCI (Homogeneous Charge Compression Ignition) mode. The HCCI mode of operation of engines is being explored as a way to reduce the emission of smoke, and NOx significantly without exhaust treatment. This is being done primarily in the context of engines used in transportation applications. However, it is felt that in a micro-CHP …
Date: August 31, 2010
Creator: Krishna, C. R.; Andrews, J.; Tutu, N. & Butcher, T.
Object Type: Report
System: The UNT Digital Library
REFERENCE CASES FOR USE IN THE CEMENTITOUS PARTNERSHIP PROJECT (open access)

REFERENCE CASES FOR USE IN THE CEMENTITOUS PARTNERSHIP PROJECT

The Cementitious Barriers Partnership Project (CBP) is a multi-disciplinary, multi-institution cross cutting collaborative effort supported by the US Department of Energy (DOE) to develop a reasonable and credible set of tools to improve understanding and prediction of the structural, hydraulic and chemical performance of cementitious barriers used in nuclear applications. The period of performance is &gt;100 years for operating facilities and &gt; 1000 years for waste management. The CBP has defined a set of reference cases to provide the following functions: (i) a common set of system configurations to illustrate the methods and tools developed by the CBP, (ii) a common basis for evaluating methodology for uncertainty characterization, (iii) a common set of cases to develop a complete set of parameter and changes in parameters as a function of time and changing conditions, (iv) a basis for experiments and model validation, and (v) a basis for improving conceptual models and reducing model uncertainties. These reference cases include the following two reference disposal units and a reference storage unit: (i) a cementitious low activity waste form in a reinforced concrete disposal vault, (ii) a concrete vault containing a steel high-level waste tank filled with grout (closed high-level waste tank), and (iii) …
Date: August 31, 2010
Creator: Langton, C.; Kosson, D. & Garrabrants, A.
Object Type: Report
System: The UNT Digital Library
Social Networking for Emergency Management and Public Safety (open access)

Social Networking for Emergency Management and Public Safety

On March 10, 2010 the workshop titled Social Networking for Emergency Management and Public Safety was held in Seattle, WA. The objective of this workshop was to showcase ways social media networking technologies can be used to support emergency management and public safety operations. The workshop highlighted the current state of social networking and where this dynamic engagement is heading, demonstrated some of the more commonly used technologies, highlighted case studies on how these tools have been used in a variety of jurisdictions and engaged the private sector on how these tools might serve as a conduit for two way communication between with the public sector to address regional recovery issues and decision making.
Date: August 31, 2010
Creator: Lesperance, Ann M.; Olson, Jarrod & Godinez, Melanie A.
Object Type: Report
System: The UNT Digital Library
Modeling Coupled Processes in Clay Formations for Radioactive Waste Disposal (open access)

Modeling Coupled Processes in Clay Formations for Radioactive Waste Disposal

As a result of the termination of the Yucca Mountain Project, the United States Department of Energy (DOE) has started to explore various alternative avenues for the disposition of used nuclear fuel and nuclear waste. The overall scope of the investigation includes temporary storage, transportation issues, permanent disposal, various nuclear fuel types, processing alternatives, and resulting waste streams. Although geologic disposal is not the only alternative, it is still the leading candidate for permanent disposal. The realm of geologic disposal also offers a range of geologic environments that may be considered, among those clay shale formations. Figure 1-1 presents the distribution of clay/shale formations within the USA. Clay rock/shale has been considered as potential host rock for geological disposal of high-level nuclear waste throughout the world, because of its low permeability, low diffusion coefficient, high retention capacity for radionuclides, and capability to self-seal fractures induced by tunnel excavation. For example, Callovo-Oxfordian argillites at the Bure site, France (Fouche et al., 2004), Toarcian argillites at the Tournemire site, France (Patriarche et al., 2004), Opalinus clay at the Mont Terri site, Switzerland (Meier et al., 2000), and Boom clay at Mol site, Belgium (Barnichon et al., 2005) have all been under intensive …
Date: August 31, 2010
Creator: Liu, Hui-Hai; Rutqvist, Jonny; Zheng, Liange; Sonnenthal, Eric; Houseworth, Jim & Birkholzer, Jens
Object Type: Report
System: The UNT Digital Library
The Wide-area Energy Management System Phase 2 Final Report (open access)

The Wide-area Energy Management System Phase 2 Final Report

The higher penetration of intermittent generation resources (including wind and solar generation) in the Bonneville Power Administration (BPA) and California Independent System Operator (CAISO) balancing authorities (BAs) raises issue of requiring expensive additional fast grid balancing services in response to additional intermittency and fast up and down power ramps in the electric supply system. The overall goal of the wide-area energy management system (WAEMS) project is to develop the principles, algorithms, market integration rules, a functional design, and a technical specification for an energy storage system to help cope with unexpected rapid changes in renewable generation power output. The resulting system will store excess energy, control dispatchable load and distributed generation, and utilize inter-area exchange of the excess energy between the California ISO and Bonneville Power Administration control areas. A further goal is to provide a cost-benefit analysis and develop a business model for an investment-based practical deployment of such a system. There are two tasks in Phase 2 of the WAEMS project: the flywheel field tests and the battery evaluation. Two final reports, the Wide-area Energy Management System Phase 2 Flywheel Field Tests Final Report and the Wide-area Energy Storage and Management System Battery Storage Evaluation, were written to …
Date: August 31, 2010
Creator: Lu, Ning; Makarov, Yuri V. & Weimar, Mark R.
Object Type: Report
System: The UNT Digital Library
THE WIDE-AREA ENERGY STORAGE AND MANAGEMENT SYSTEM PHASE II Final Report - Flywheel Field Tests (open access)

THE WIDE-AREA ENERGY STORAGE AND MANAGEMENT SYSTEM PHASE II Final Report - Flywheel Field Tests

This research was conducted by Pacific Northwest National Laboratory (PNNL) operated for the U.S. department of Energy (DOE) by Battelle Memorial Institute for Bonneville Power Administration (BPA), California Institute for Energy and Environment (CIEE) and California Energy Commission (CEC). A wide-area energy management system (WAEMS) is a centralized control system that operates energy storage devices (ESDs) located in different places to provide energy and ancillary services that can be shared among balancing authorities (BAs). The goal of this research is to conduct flywheel field tests, investigate the technical characteristics and economics of combined hydro-flywheel regulation services that can be shared between Bonneville Power Administration (BPA) and California Independent System Operator (CAISO) controlled areas. This report is the second interim technical report for Phase II of the WAEMS project. This report presents: 1) the methodology of sharing regulation service between balancing authorities, 2) the algorithm to allocate the regulation signal between the flywheel and hydro power plant to minimize the wear-and-tear of the hydro power plants, 3) field results of the hydro-flywheel regulation service (conducted by the Beacon Power), and 4) the performance metrics and economic analysis of the combined hydro-flywheel regulation service.
Date: August 31, 2010
Creator: Lu, Ning; Makarov, Yuri V.; Weimar, Mark R.; Rudolph, Frank; Murthy, Shashikala; Arseneaux, Jim et al.
Object Type: Report
System: The UNT Digital Library
3-D Mapping Technologies for High Level Waste Tanks (open access)

3-D Mapping Technologies for High Level Waste Tanks

This research investigated four techniques that could be applicable for mapping of solids remaining in radioactive waste tanks at the Savannah River Site: stereo vision, LIDAR, flash LIDAR, and Structure from Motion (SfM). Stereo vision is the least appropriate technique for the solids mapping application. Although the equipment cost is low and repackaging would be fairly simple, the algorithms to create a 3D image from stereo vision would require significant further development and may not even be applicable since stereo vision works by finding disparity in feature point locations from the images taken by the cameras. When minimal variation in visual texture exists for an area of interest, it becomes difficult for the software to detect correspondences for that object. SfM appears to be appropriate for solids mapping in waste tanks. However, equipment development would be required for positioning and movement of the camera in the tank space to enable capturing a sequence of images of the scene. Since SfM requires the identification of distinctive features and associates those features to their corresponding instantiations in the other image frames, mockup testing would be required to determine the applicability of SfM technology for mapping of waste in tanks. There may be …
Date: August 31, 2010
Creator: Marzolf, A. & Folsom, M.
Object Type: Article
System: The UNT Digital Library
Electric Utility Transmission and Distribution Line Engineering Program (open access)

Electric Utility Transmission and Distribution Line Engineering Program

Economic development in the United States depends on a reliable and affordable power supply. The nation will need well educated engineers to design a modern, safe, secure, and reliable power grid for our future needs. An anticipated shortage of qualified engineers has caused considerable concern in many professional circles, and various steps are being taken nationwide to alleviate the potential shortage and ensure the North American power system's reliability, and our world-wide economic competitiveness. To help provide a well-educated and trained workforce which can sustain and modernize the nation's power grid, Gonzaga University's School of Engineering and Applied Science has established a five-course (15-credit hour) Certificate Program in Transmission and Distribution (T&amp;D) Engineering. The program has been specifically designed to provide working utility engineering professionals with on-line access to advanced engineering courses which cover modern design practice with an industry-focused theoretical foundation. A total of twelve courses have been developed to-date and students may select any five in their area of interest for the T&amp;D Certificate. As each course is developed and taught by a team of experienced engineers (from public and private utilities, consultants, and industry suppliers), students are provided a unique opportunity to interact directly with different industry …
Date: August 31, 2010
Creator: McKenny, Peter
Object Type: Report
System: The UNT Digital Library
Integrated Mid-Continent Carbon Capture, Sequestration & Enhanced Oil Recovery Project (open access)

Integrated Mid-Continent Carbon Capture, Sequestration & Enhanced Oil Recovery Project

A consortium of research partners led by the Southwest Regional Partnership on Carbon Sequestration and industry partners, including CAP CO2 LLC, Blue Source LLC, Coffeyville Resources, Nitrogen Fertilizers LLC, Ash Grove Cement Company, Kansas Ethanol LLC, Headwaters Clean Carbon Services, Black & Veatch, and Schlumberger Carbon Services, conducted a feasibility study of a large-scale CCS commercialization project that included large-scale CO{sub 2} sources. The overall objective of this project, entitled the 'Integrated Mid-Continent Carbon Capture, Sequestration and Enhanced Oil Recovery Project' was to design an integrated system of US mid-continent industrial CO{sub 2} sources with CO{sub 2} capture, and geologic sequestration in deep saline formations and in oil field reservoirs with concomitant EOR. Findings of this project suggest that deep saline sequestration in the mid-continent region is not feasible without major financial incentives, such as tax credits or otherwise, that do not exist at this time. However, results of the analysis suggest that enhanced oil recovery with carbon sequestration is indeed feasible and practical for specific types of geologic settings in the Midwestern U.S.
Date: August 31, 2010
Creator: McPherson, Brian
Object Type: Report
System: The UNT Digital Library
Multi-Faceted Scientific Strategies Toward Better Solid-State Lighting of Phosphorescent OLEDs (open access)

Multi-Faceted Scientific Strategies Toward Better Solid-State Lighting of Phosphorescent OLEDs

This project has advanced solid-state lighting (SSL) by utilizing new phosphorescent systems for use in organic light-emitting diodes (OLEDs). The technical approach was two-fold: a) Targeted synthesis and screening of emitters designed to exhibit phosphorescence with maximized brightness in the solid state; and b) Construction and optimizing the performance of monochromatic and white OLEDs from the best new emitters to improve performance metrics versus the state of the art. The phosphorescent systems were screened candidates among a large variety of recentlysynthesized and newly-designed molecular and macromolecular metal-organic phosphors. The emitters and devices have been optimized to maximize light emission and color metrics, improve the long-term durability of emitters and devices, and reduce the manufacturing cost both by simplifying the process flow and by seeking less expensive device components than common ones. The project succeeded in all these goals upon comparison of the best materials and devices investigated vs. the state of the art of the technology.
Date: August 31, 2010
Creator: Omary, Mohammad; Gnade, Bruce; Wang, Qi; Elbjeirami, Oussama; Yang, Chi; Shepherd, Nigel et al.
Object Type: Report
System: The UNT Digital Library
International Travel by Congress: Legislation in the 111th Congress, Background, and Potential Policy Options (open access)

International Travel by Congress: Legislation in the 111th Congress, Background, and Potential Policy Options

International travel by Members of Congress and their staff is an issue of longstanding interest among some members of the public, media outlets, and Members. Questions regarding the purposes and destinations of international travel by Congress frequently arise, as do questions about the ability to track the costs and benefits of such travel. This report provides information and analysis on the use of foreign currency expended in support of congressional travel to international destinations that is paid for with appropriated funds and authorized by the House or Senate; on measures related to international travel by Congress introduced in the 111th Congress, and administrative actions related to international travel taken by the House; and on potential options for Congress related to international travel by Members and staff. This report does not provide data on travel costs borne by executive agencies that support congressional travel, as those data are not publicly available.
Date: August 31, 2010
Creator: Petersen, R. Eric; Lisbeth, Terrence L.; Gracias, Mabel & Reynolds, Parker H.
Object Type: Report
System: The UNT Digital Library
Integrated Removal of NOx with Carbon Monoxide as Reductant, and Capture of Mercury in a Low Temperature Selective Catalytic and Adsorptive Reactor (open access)

Integrated Removal of NOx with Carbon Monoxide as Reductant, and Capture of Mercury in a Low Temperature Selective Catalytic and Adsorptive Reactor

Coal will likely continue to be a dominant component of power generation in the foreseeable future. This project addresses the issue of environmental compliance for two important pollutants: NO{sub x} and mercury. Integration of emission control units is in principle possible through a Low Temperature Selective Catalytic and Adsorptive Reactor (LTSCAR) in which NO{sub x} removal is achieved in a traditional SCR mode but at low temperature, and, uniquely, using carbon monoxide as a reductant. The capture of mercury is integrated into the same process unit. Such an arrangement would reduce mercury removal costs significantly, and provide improved control for the ultimate disposal of mercury. The work completed in this project demonstrates that the use of CO as a reductant in LTSCR is technically feasible using supported manganese oxide catalysts, that the simultaneous warm-gas capture of elemental and oxidized mercury is technically feasible using both nanostructured chelating adsorbents and ceria-titania-based materials, and that integrated removal of mercury and NO{sub x} is technically feasible using ceria-titania-based materials.
Date: August 31, 2010
Creator: Pinto, Neville; Smirniotis, Panagiotis & Thiel, Stephen
Object Type: Report
System: The UNT Digital Library