Navy Shipboard Lasers for Surface, Air, and Missile Defense: Background and Issues for Congress (open access)

Navy Shipboard Lasers for Surface, Air, and Missile Defense: Background and Issues for Congress

Report regarding potential Navy shipboard lasers for countering surface, air, and ballistic missile threats. It does not discuss the use of lasers on Navy aircraft or submarines, or the use of lasers by other military services.
Date: October 19, 2012
Creator: O'Rourke, Ronald
Object Type: Report
System: The UNT Digital Library
Texas Register, Volume 37, Number 42, Pages 8247-8358, October 19, 2012 (open access)

Texas Register, Volume 37, Number 42, Pages 8247-8358, October 19, 2012

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: October 19, 2012
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
U.S. Sanctions on Burma (open access)

U.S. Sanctions on Burma

This report provides a brief history of U.S. policy towards Burma and the development of U.S. sanctions, a topical summary of those sanctions, and an examination of additional sanctions that have been considered, but not enacted, by Congress, or that could be imposed under existing law or executive orders. The report concludes with a discussion of options for Congress.
Date: October 19, 2012
Creator: Martin, Michael F.
Object Type: Report
System: The UNT Digital Library
Radioactive Waste Conditioning, Immobilisation, And Encapsulation Processes And Technologies: Overview And Advances (Chapter 7) (open access)

Radioactive Waste Conditioning, Immobilisation, And Encapsulation Processes And Technologies: Overview And Advances (Chapter 7)

The main immobilization technologies that are available commercially and have been demonstrated to be viable are cementation, bituminization, and vitrification. Vitrification is currently the most widely used technology for the treatment of high level radioactive wastes (HLW) throughout the world. Most of the nations that have generated HLW are immobilizing in either alkali borosilicate glass or alkali aluminophosphate glass. The exact compositions of nuclear waste glasses are tailored for easy preparation and melting, avoidance of glass-in-glass phase separation, avoidance of uncontrolled crystallization, and acceptable chemical durability, e.g., leach resistance. Glass has also been used to stabilize a variety of low level wastes (LLW) and mixed (radioactive and hazardous) low level wastes (MLLW) from other sources such as fuel rod cladding/decladding processes, chemical separations, radioactive sources, radioactive mill tailings, contaminated soils, medical research applications, and other commercial processes. The sources of radioactive waste generation are captured in other chapters in this book regarding the individual practices in various countries (legacy wastes, currently generated wastes, and future waste generation). Future waste generation is primarily driven by interest in sources of clean energy and this has led to an increased interest in advanced nuclear power production. The development of advanced wasteforms is a …
Date: October 19, 2012
Creator: Jantzen, Carol M.; Lee, William E. & Ojovan, Michael I.
Object Type: Book
System: The UNT Digital Library
Fast Pyrolysis Oil Stabilization: An Integrated Catalytic and Membrane Approach for Improved Bio-oils (open access)

Fast Pyrolysis Oil Stabilization: An Integrated Catalytic and Membrane Approach for Improved Bio-oils

This University of Massachusetts, Amherst project, "Fast Pyrolysis Oil Stabilization: An Integrated Catalytic and Membrane Approach for Improved Bio-oils" started on 1st February 2009 and finished on August 31st 2011. The project consisted following tasks: Task 1.0: Char Removal by Membrane Separation Technology The presence of char particles in the bio-oil causes problems in storage and end-use. Currently there is no well-established technology to remove char particles less than 10 micron in size. This study focused on the application of a liquid-phase microfiltration process to remove char particles from bio-oil down to slightly sub-micron levels. Tubular ceramic membranes of nominal pore sizes 0.5 and 0.8 µm were employed to carry out the microfiltration, which was conducted in the cross-flow mode at temperatures ranging from 38 to 45 C and at three different trans-membrane pressures varying from 1 to 3 bars. The results demonstrated the removal of the major quantity of char particles with a significant reduction in overall ash content of the bio-oil. The results clearly showed that the cake formation mechanism of fouling is predominant in this process. Task 2.0 Acid Removal by Membrane Separation Technology The feasibility of removing small organic acids from the aqueous fraction of fast …
Date: October 19, 2012
Creator: \Huber, George W.; Upadhye, Aniruddha A.; Ford, David M.; Bhatia, Surita R. & Badger, Phillip C.
Object Type: Report
System: The UNT Digital Library
Evaluation Of The Integrated Solubility Model, A Graded Approach For Predicting Phase Distribution In Hanford Tank Waste (open access)

Evaluation Of The Integrated Solubility Model, A Graded Approach For Predicting Phase Distribution In Hanford Tank Waste

The mission of the DOE River Protection Project (RPP) is to store, retrieve, treat and dispose of Hanford's tank waste. Waste is retrieved from the underground tanks and delivered to the Waste Treatment and Immobilization Plant (WTP). Waste is processed through a pretreatment facility where it is separated into low activity waste (LAW), which is primarily liquid, and high level waste (HLW), which is primarily solid. The LAW and HLW are sent to two different vitrification facilities and glass canisters are then disposed of onsite (for LAW) or shipped off-site (for HLW). The RPP mission is modeled by the Hanford Tank Waste Operations Simulator (HTWOS), a dynamic flowsheet simulator and mass balance model that is used for mission analysis and strategic planning. The integrated solubility model (ISM) was developed to improve the chemistry basis in HTWOS and better predict the outcome of the RPP mission. The ISM uses a graded approach to focus on the components that have the greatest impact to the mission while building the infrastructure for continued future improvement and expansion. Components in the ISM are grouped depending upon their relative solubility and impact to the RPP mission. The solubility of each group of components is characterized …
Date: October 19, 2012
Creator: Pierson, Kayla L.; Belsher, Jeremy D. & Seniow, Kendra R.
Object Type: Article
System: The UNT Digital Library
Incorporation of NREL Solar Advisor Model Photovoltaic Capabilities with GridLAB-D (open access)

Incorporation of NREL Solar Advisor Model Photovoltaic Capabilities with GridLAB-D

This report provides a summary of the work updating the photovoltaic model inside GridLAB-D. The National Renewable Energy Laboratory Solar Advisor Model (SAM) was utilized as a basis for algorithms and validation of the new implementation. Subsequent testing revealed that the two implementations are nearly identical in both solar impacts and power output levels. This synergized model aides the system-level impact studies of GridLAB-D, but also allows more specific details of a particular site to be explored via the SAM software.
Date: October 19, 2012
Creator: Tuffner, Francis K.; Hammerstrom, Janelle L. & Singh, Ruchi
Object Type: Report
System: The UNT Digital Library
Enhanced optical absorption due to symmetry breaking in TiO_{2(1-x)} S_{2x} alloys (open access)

Enhanced optical absorption due to symmetry breaking in TiO_{2(1-x)} S_{2x} alloys

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Date: October 19, 2012
Creator: Schleife, A; Rinke, P; Bechstedt, F & de Walle, C
Object Type: Article
System: The UNT Digital Library
Terrorism and Transnational Crime: Foreign Policy Issues for Congress (open access)

Terrorism and Transnational Crime: Foreign Policy Issues for Congress

This report provides an overview of transnational security issues related to patterns of interaction among international terrorist and crime groups. In addition, the report discusses the U.S. government's perception of and response to the threat. It concludes with an analysis of foreign policy options.
Date: October 19, 2012
Creator: Rollins, John & Wyler, Liana Sun
Object Type: Report
System: The UNT Digital Library
Quantitative Tools for Dissection of Hydrogen-Producing Metabolic Networks-Final Report (open access)

Quantitative Tools for Dissection of Hydrogen-Producing Metabolic Networks-Final Report

During this project we have pioneered the development of integrated experimental-computational technologies for the quantitative dissection of metabolism in hydrogen and biofuel producing microorganisms (i.e. C. acetobutylicum and various cyanobacteria species). The application of these new methodologies resulted in many significant advances in the understanding of the metabolic networks and metabolism of these organisms, and has provided new strategies to enhance their hydrogen or biofuel producing capabilities. As an example, using mass spectrometry, isotope tracers, and quantitative flux-modeling we mapped the metabolic network structure in C. acetobutylicum. This resulted in a comprehensive and quantitative understanding of central carbon metabolism that could not have been obtained using genomic data alone. We discovered that biofuel production in this bacterium, which only occurs during stationary phase, requires a global remodeling of central metabolism (involving large changes in metabolite concentrations and fluxes) that has the effect of redirecting resources (carbon and reducing power) from biomass production into solvent production. This new holistic, quantitative understanding of metabolism is now being used as the basis for metabolic engineering strategies to improve solvent production in this bacterium. In another example, making use of newly developed technologies for monitoring hydrogen and NAD(P)H levels in vivo, we dissected the …
Date: October 19, 2012
Creator: Rabinowitz, Joshua D.; Dismukes, G.Charles.; Rabitz, Herschel A. & Amador-Noguez, Daniel
Object Type: Report
System: The UNT Digital Library
U.S. International Trade: Trends and Forecasts (open access)

U.S. International Trade: Trends and Forecasts

This report provides an overview of the current status, trends, and forecasts for U.S. import and export flows as well as certain trade balances. The purpose of this report is to provide current data and brief explanations for the various types of trade flows, along with a brief discussion of trends that help inform the discussion of the various policy issues mentioned above.
Date: October 19, 2012
Creator: Williams, Brock R. & Donnelly, J. Michael
Object Type: Report
System: The UNT Digital Library
Managing the Nuclear Fuel Cycle: Policy Implications of Expanding Global Access to Nuclear Power (open access)

Managing the Nuclear Fuel Cycle: Policy Implications of Expanding Global Access to Nuclear Power

This report is intended to provide background information needed to understand the debate over proposed strategies to redesign the global nuclear fuel cycle. It begins with a look at the motivating factors underlying the resurgent interest in nuclear power in some parts of the world, the nuclear power industry's current state of affairs, and the interdependence of the various stages of the nuclear fuel cycle.
Date: October 19, 2012
Creator: Nikitin, Mary Beth; Andrews, Anthony & Holt, Mark
Object Type: Report
System: The UNT Digital Library
Burma’s Political Prisoners and U.S. Sanctions (open access)

Burma’s Political Prisoners and U.S. Sanctions

This report provides information about the Burma’s Political Prisoners and U.S. Sanctions including the Burmese freedom and Democracy act of 2003.
Date: October 19, 2012
Creator: Martin, Michael F.
Object Type: Report
System: The UNT Digital Library