LITERATURE REVIEW ON IMPACT OF GLYCOLATE ON THE 2H EVAPORATOR AND THE EFFLUENT TREATMENT FACILITY (open access)

LITERATURE REVIEW ON IMPACT OF GLYCOLATE ON THE 2H EVAPORATOR AND THE EFFLUENT TREATMENT FACILITY

Glycolic acid (GA) is being studied as an alternate reductant in the Defense Waste Processing Facility (DWPF) feed preparation process. It will either be a total or partial replacement for the formic acid that is currently used. A literature review has been conducted on the impact of glycolate on two post-DWPF downstream systems - the 2H Evaporator system and the Effluent Treatment Facility (ETF). The DWPF recycle stream serves as a portion of the feed to the 2H Evaporator. Glycolate enters the evaporator system from the glycolate in the recycle stream. The overhead (i.e., condensed phase) from the 2H Evaporator serves as a portion of the feed to the ETF. The literature search revealed that virtually no impact is anticipated for the 2H Evaporator. Glycolate may help reduce scale formation in the evaporator due to its high complexing ability. The drawback of the solubilizing ability is the potential impact on the criticality analysis of the 2H Evaporator system. It is recommended that at least a theoretical evaluation to confirm the finding that no self-propagating violent reactions with nitrate/nitrites will occur should be performed. Similarly, identification of sources of ignition relevant to glycolate and/or update of the composite flammability analysis to …
Date: May 10, 2012
Creator: Adu-Wusu, K.
Object Type: Report
System: The UNT Digital Library
Mechanical Design of a High Energy Beam Absorber for the Advanced Superconducting Test Accelerator (ASTA) at Fermilab (open access)

Mechanical Design of a High Energy Beam Absorber for the Advanced Superconducting Test Accelerator (ASTA) at Fermilab

A high energy beam absorber has been built for the Advanced Superconducting Test Accelerator (ASTA) at Fermilab. In the facility's initial configuration, an electron beam will be accelerated through 3 TTF-type or ILC-type SRF cryomodules to an energy of 750MeV. The electron beam will be directed to one of multiple downstream experimental and diagnostic beam lines and then deposited in one of two beam absorbers. The facility is designed to accommodate up to 6 cryomodules, which would produce a 75kW beam at 1.5GeV; this is the driving design condition for the beam absorbers. The beam absorbers consist of water-cooled graphite, aluminum and copper layers contained in a helium-filled enclosure. This paper describes the mechanical implementation of the beam absorbers, with a focus on thermal design and analysis. The potential for radiation-induced degradation of the graphite is discussed.
Date: May 10, 2012
Creator: Baffes, C.; Church, M.; Leibfritz, J.; Oplt, S. & Rakhno, I.
Object Type: Article
System: The UNT Digital Library
NEAMS update quarterly report for January - March 2012. (open access)

NEAMS update quarterly report for January - March 2012.

Quarterly highlights are: (1) The integration of Denovo and AMP was demonstrated in an AMP simulation of the thermo-mechanics of a complete fuel assembly; (2) Bison was enhanced with a mechanistic fuel cracking model; (3) Mechanistic algorithms were incorporated into various lower-length-scale models to represent fission gases and dislocations in UO2 fuels; (4) Marmot was improved to allow faster testing of mesoscale models using larger problem domains; (5) Component models of reactor piping were developed for use in Relap-7; (6) The mesh generator of Proteus was updated to accept a mesh specification from Moose and equations were formulated for the intermediate-fidelity Proteus-2D1D module; (7) A new pressure solver was implemented in Nek5000 and demonstrated to work 2.5 times faster than the previous solver; (8) Work continued on volume-holdup models for two fuel reprocessing operations: voloxidation and dissolution; (9) Progress was made on a pyroprocessing model and the characterization of pyroprocessing emission signatures; (10) A new 1D groundwater waste transport code was delivered to the used fuel disposition (UFD) campaign; (11) Efforts on waste form modeling included empirical simulation of sodium-borosilicate glass compositions; (12) The Waste team developed three prototypes for modeling hydride reorientation in fuel cladding during very long-term fuel …
Date: May 10, 2012
Creator: Bradley, K. S.; Hayes, S.; Pointer, D.; Summers, R.; Sadasivan, P.; Sun, X. et al.
Object Type: Report
System: The UNT Digital Library
FEMA's Community Disaster Loan Program: History, Analysis, and Issues for Congress (open access)

FEMA's Community Disaster Loan Program: History, Analysis, and Issues for Congress

This report compares and analyzes three different categories of loans issued in different time periods in the program's history: "traditional" loans issued between 1974 and 2005, in 2007, and between 2009 and 2011 (TCDLs); "special" (SCDLs) loans issued in 2005-2006 following Hurricanes Katrina and Rita; and loans issued under unique provisions in 2008 (2008 CDLs).
Date: May 10, 2012
Creator: Brown, Jared T.
Object Type: Report
System: The UNT Digital Library
Immigration-Related Worksite Enforcement: Performance Measures (open access)

Immigration-Related Worksite Enforcement: Performance Measures

The Department of Homeland Security's (DHS) U.S. Immigration and Customs Enforcement (ICE) is responsible for immigration-related worksite enforcement, or enforcement of the prohibitions on unauthorized employment in Section 274A of the Immigration and Nationality Act (INA). The INA §274A provisions, sometimes referred to as employer sanctions, make it unlawful for an employer to knowingly hire, recruit or refer for a fee, or continue to employ an alien who is not authorized to be so employed. This report looks at enforcement measures of this act.
Date: May 10, 2012
Creator: Bruno, Andorra
Object Type: Report
System: The UNT Digital Library
Afghanistan Casualties: Military Forces and Civilians (open access)

Afghanistan Casualties: Military Forces and Civilians

This report collects statistics from a variety of sources on casualties sustained during Operation Enduring Freedom (OEF), which began on October 7, 2001, and is ongoing. OEF actions take place primarily in Afghanistan; however, OEF casualties also include American casualties in Pakistan, Uzbekistan, Guantanamo Bay (Cuba), Djibouti, Eritrea, Ethiopia, Jordan, Kenya, Kyrgyzstan, the Philippines, Seychelles, Sudan, Tajikistan, Turkey, and Yemen.
Date: May 10, 2012
Creator: Chesser, Susan G.
Object Type: Report
System: The UNT Digital Library
Biofuels from Bacteria, Electricity, and CO2 (open access)

Biofuels from Bacteria, Electricity, and CO2

Advanced Research Projects Agency-Energy project sheet summarizing general information about the Electrofuels program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses combining ammonia and bacteria to produce liquid fuel as part of the "Biofuels from CO2 Using Ammonia or Iron-Oxidizing Bacteria in Reverse Microbial Fuel Cells" project.
Date: May 10, 2012
Creator: Columbia University
Object Type: Text
System: The UNT Digital Library
A New Biology for the 21st Century; Ensuring the United States Leads the Coming Biology Revolution (open access)

A New Biology for the 21st Century; Ensuring the United States Leads the Coming Biology Revolution

In July, 2008, the National Institutes of Health (NIH), National Science Foundation (NSF), and Department of Energy (DOE) asked the National Research Council’s Board on Life Sciences to convene a committee to examine the current state of biological research in the United States and recommend how best to capitalize on recent technological and scientific advances that have allowed biologists to integrate biological research findings, collect and interpret vastly increased amounts of data, and predict the behavior of complex biological systems. From September 2008 through July of 2009, a committee of 16 experts from the fields of biology, engineering and computational science undertook to delineate those scientific and technological advances and come to a consensus on how the U.S. might best capitalize on them. This report, authored by the Committee on a New Biology for the 21st Century, describes the committee’s work and conclusions.
Date: May 10, 2012
Creator: Committee on a New Biology for the 21st Century
Object Type: Report
System: The UNT Digital Library
Test Plan - Solids Accumulation Scouting Studies (open access)

Test Plan - Solids Accumulation Scouting Studies

This plan documents the highlights of the Solids Accumulations Scouting Studies test; a project, from Washington River Protection Solutions (WRPS), that began on February 1, 2012. During the last 12 weeks considerable progress has been made to design and plan methods that will be used to estimate the concentration and distribution of heavy fissile solids in accumulated solids in the Hanford double-shell tank (DST) 241-AW-105 (AW-105), which is the primary goal of this task. This DST will be one of the several waste feed delivery staging tanks designated to feed the Pretreatment Facility (PTF) of the Waste Treatment and Immobilization Plant (WTP). Note that over the length of the waste feed delivery mission AW-105 is currently identified as having the most fill empty cycles of any DST feed tanks, which is the reason for modeling this particular tank. At SRNL an existing test facility, the Mixing Demonstration Tank, which will be modified for the present work, will use stainless steel particles in a simulant that represents Hanford waste to perform mock staging tanks transfers that will allow solids to accumulate in the tank heel. The concentration and location of the mock fissile particles will be measured in these scoping studies …
Date: May 10, 2012
Creator: Duignan, M. R.; Steeper, T. J.; Steimke, J. L. & Fowley, M. D.
Object Type: Report
System: The UNT Digital Library
Youth and the Labor Force: Background and Trends (open access)

Youth and the Labor Force: Background and Trends

This report provides context for policymakers on the youth employment situation. It includes data on labor force participation, employment, and unemployment in the post-World War II period, with a focus on trends since 2000.
Date: May 10, 2012
Creator: Fernandes-Alcantara, Adrienne L.
Object Type: Report
System: The UNT Digital Library
Federal Laws Relating to Cybersecurity: Discussion of Proposed Revisions (open access)

Federal Laws Relating to Cybersecurity: Discussion of Proposed Revisions

This report discusses how the current legislative framework for cybersecurity might need to be revised.
Date: May 10, 2012
Creator: Fischer, Eric A.
Object Type: Report
System: The UNT Digital Library
Federal Laws Relating to Cybersecurity: Discussion of Proposed Revisions (open access)

Federal Laws Relating to Cybersecurity: Discussion of Proposed Revisions

This report discusses that framework and proposals to amend more than 30 acts of Congress that are part of or relevant to it.
Date: May 10, 2012
Creator: Fischer, Eric A.
Object Type: Report
System: The UNT Digital Library
Biofuels from E. coli (open access)

Biofuels from E. coli

Advanced Research Projects Agency-Energy project sheet summarizing general information about the Electrofuels program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses the modification of E. coli to consume carbon dioxide and produce liquid fuel as part of the "Engineering E. coli as an Electrofuels Chassis for Isooctane Production" project.
Date: May 10, 2012
Creator: Ginkgo Bioworks
Object Type: Text
System: The UNT Digital Library
Fuel from Bacteria, CO2, Water, and Solar Energy (open access)

Fuel from Bacteria, CO2, Water, and Solar Energy

Advanced Research Projects Agency-Energy project sheet summarizing general information about a new program to generate liquid fuels from bacteria, carbon dioxide, water, and sunlight (project title "Engineering a Bacterial Reverse Fuel Cell") including critical needs, innovation and advantages, impacts, and contact information. This sheet is the first open solicitation, announcing funding opportunities for involvement in the project.
Date: May 10, 2012
Creator: Harvard Medical School. Wyss Institute
Object Type: Text
System: The UNT Digital Library
Federal Employees' Retirement System: Benefits and Financing (open access)

Federal Employees' Retirement System: Benefits and Financing

Report discussing the retirement systems in place for federal employees. Most civilian federal employees who were hired before 1984 are covered by the Civil Service Retirement System, and contribute 7.0% of their pay to a retirement fund. Federal employees hired in 1984 or later are covered by the Federal Employees' Retirement System and contribute 0.8% of their pay to a retirement fund. Both require participants to contribute toward the cost of their pensions through a payroll tax. The taxable wage base is $110,100 in 2012. This report discusses both retirement funds.
Date: May 10, 2012
Creator: Isaacs, Katelin P.
Object Type: Report
System: The UNT Digital Library
Foreign Direct Investment in the United States: An Economic Analysis (open access)

Foreign Direct Investment in the United States: An Economic Analysis

This report discusses the foreign direct investment in the United States that declined sharply after 2000, when a record $300 billion was invested in U.S. businesses and real estate. While some in Congress encourage such investment to offset the perceived negative economic effects of U.S. firms investing abroad, others are concerned about foreign acquisitions of U.S. firms that are considered essential to U.S. national and economic security.
Date: May 10, 2012
Creator: Jackson, James K.
Object Type: Report
System: The UNT Digital Library
Outsourcing and Insourcing Jobs in the U.S. Economy: Evidence Based on Foreign Investment Data (open access)

Outsourcing and Insourcing Jobs in the U.S. Economy: Evidence Based on Foreign Investment Data

The impact of foreign direct investment on U.S. employment is provoking a national debate regarding U.S. job creation versus outsourcing. Many economists argue that there is little evidence to support the notion that the overseas investment activities of U.S. multinational companies play a significant role in the rate at which jobs are created in the U.S. economy. They argue that the source of job creation in the economy is rooted in the combination of macroeconomic policies the nation has chosen, the rate of productivity growth, and the availability of resources. This report addresses these issues by analyzing the extent of direct investment into and out of the economy, the role such investment plays in U.S. trade, jobs, and production, and the relationship between direct investment and the broader economic changes that are occurring in the U.S. economy.
Date: May 10, 2012
Creator: Jackson, James K.
Object Type: Report
System: The UNT Digital Library
Pakistan's Nuclear Weapons: Proliferation and Security Issues (open access)

Pakistan's Nuclear Weapons: Proliferation and Security Issues

This report discusses Pakistan's nuclear proliferation and security issues. It discusses the steps that could enable Pakistan to undertake both quantitative and qualitative improvements to its nuclear arsenal. Whether and to what extent Pakistan's current expansion of its nuclear weapons-related facilities is a response to the 2008 U.S.-India nuclear cooperation agreement is unclear.
Date: May 10, 2012
Creator: Kerr, Paul K. & Nikitin, Mary Beth
Object Type: Report
System: The UNT Digital Library
Energetics and approximate quasiparticle electronic structure of low-index surfaces of SnO2 (open access)

Energetics and approximate quasiparticle electronic structure of low-index surfaces of SnO2

None
Date: May 10, 2012
Creator: Kuefner, S; Schleife, A; Hoeffling, B & Bechstedt, F
Object Type: Article
System: The UNT Digital Library
Longitudinal Emittance Growth Due to Nonlinear Space Charge Effect (open access)

Longitudinal Emittance Growth Due to Nonlinear Space Charge Effect

None
Date: May 10, 2012
Creator: Lau, Y. Y.; Yu, S. S.; Barnard, J. J. & Seidl, P. A.
Object Type: Article
System: The UNT Digital Library
Understanding China's Political System (open access)

Understanding China's Political System

This report is designed to provide Congress with a perspective on the contemporary political system of China, the only Communist Party-led authoritarian state in the G-20 grouping of major economies. China's Communist Party dominates state and society in China, is committed to maintaining a permanent monopoly on power, and is intolerant of those who question its right to rule. The report opens with a brief overview of China's leading political institutions, followed by an introduction to distinct features of China's formal political. The second half of the report is devoted to detailed discussion of China's formal political structures. Also discussed are other political actors who are playing a role in influencing policy debates. The report concludes with a discussion of prospects for political reform.
Date: May 10, 2012
Creator: Lawrence, Susan V. & Martin, Michael F.
Object Type: Report
System: The UNT Digital Library
BLENDING ANALYSIS FOR RADIOACTIVE SALT WASTE PROCESSING FACILITY (open access)

BLENDING ANALYSIS FOR RADIOACTIVE SALT WASTE PROCESSING FACILITY

Savannah River National Laboratory (SRNL) evaluated methods to mix and blend the contents of the blend tanks to ensure the contents are properly blended before they are transferred from the blend tank such as Tank 21 and Tank 24 to the Salt Waste Processing Facility (SWPF) feed tank. The tank contents consist of three forms: dissolved salt solution, other waste salt solutions, and sludge containing settled solids. This paper focuses on developing the computational model and estimating the operation time of submersible slurry pump when the tank contents are adequately blended prior to their transfer to the SWPF facility. A three-dimensional computational fluid dynamics approach was taken by using the full scale configuration of SRS Type-IV tank, Tank 21H. Major solid obstructions such as the tank wall boundary, the transfer pump column, and three slurry pump housings including one active and two inactive pumps were included in the mixing performance model. Basic flow pattern results predicted by the computational model were benchmarked against the SRNL test results and literature data. Tank 21 is a waste tank that is used to prepare batches of salt feed for SWPF. The salt feed must be a homogeneous solution satisfying the acceptance criterion of …
Date: May 10, 2012
Creator: Lee, S.
Object Type: Article
System: The UNT Digital Library
Job Growth During the Recovery (open access)

Job Growth During the Recovery

This report provides a snapshot of the current situation in the labor market to better inform policymakers with regard to further assisting the unemployed, such as workers laid off from industries that may have permanently downsized employment.
Date: May 10, 2012
Creator: Levine, Linda
Object Type: Report
System: The UNT Digital Library
Report on thermal aging effects on tensile properties of ferritic-martensitic steels. (open access)

Report on thermal aging effects on tensile properties of ferritic-martensitic steels.

This report provides an update on the evaluation of thermal-aging induced degradation of tensile properties of advanced ferritic-martensitic steels. The report is the first deliverable (level 3) in FY11 (M3A11AN04030103), under the Work Package A-11AN040301, 'Advanced Alloy Testing' performed by Argonne National Laboratory, as part of Advanced Structural Materials Program for the Advanced Reactor Concepts. This work package supports the advanced structural materials development by providing tensile data on aged alloys and a mechanistic model, validated by experiments, with a predictive capability on long-term performance. The scope of work is to evaluate the effect of thermal aging on the tensile properties of advanced alloys such as ferritic-martensitic steels, mod.9Cr-1Mo, NF616, and advanced austenitic stainless steel, HT-UPS. The aging experiments have been conducted over a temperature of 550-750 C for various time periods to simulate the microstructural changes in the alloys as a function of time at temperature. In addition, a mechanistic model based on thermodynamics and kinetics has been used to address the changes in microstructure of the alloys as a function of time and temperature, which is developed in the companion work package at ANL. The focus of this project is advanced alloy testing and understanding the effects of …
Date: May 10, 2012
Creator: Li, M.; Soppet, W. K.; Rink, D. L.; Listwan, J. T. & Natesan, K.
Object Type: Report
System: The UNT Digital Library