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Margins: Following Jesus at the Edge in Luke's Gospel. 107th Abilene Christian University Summit; September 15-18, 2013
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3013 DE INNER CONTAINER CLOSURE WELD CORROSION EVALUATION
Destructive evaluation (DE) of 3013 containers is one part of the U. S. Department of Energy Integrated Surveillance Program. During standard DE of 3013 containers, visual examinations for pitting and stress corrosion cracking (SCC) are performed on the accessible surfaces of the outer, inner, and convenience containers, which make up the 3013 container. As a result of 3013 DE additional analysis, the area near the inner container closure weld has been identified as being a region of increased corrosion susceptibility, which may provide a pathway for corrosive gases to the outer container. This area has a higher residual stress, an altered microstructure, and less corrosion resistant weld oxides as a result of the welding process as well as a lower temperature than other areas of the container, which may increase the absorption of moisture on the surface. The deposition of moisture in this stressed region could lead to pitting and stress corrosion cracking. During FY2013, the inner container closure weld area was more closely evaluated on several archived samples from DE containers. These containers included FY09 DE2, FY12 DE4, FY12 DE6 and FY12 DE7 and the Hanford High Moisture Container. The additional examinations included visual observations with a stereomicroscope, scanning …
Date:
September 30, 2013
Creator:
Mickalonis, J.
Object Type:
Report
System:
The UNT Digital Library
Advanced CO{sub 2} Capture Technology for Low Rank Coal IGCC System
The overall objective of the project is to demonstrate the technical and economic viability of a new Integrated Gasification Combined Cycle (IGCC) power plant designed to efficiently process low rank coals. The plant uses an integrated CO{sub 2} scrubber/Water Gas Shift (WGS) catalyst to capture over90 percent capture of the CO{sub 2} emissions, while providing a significantly lower cost of electricity (COE) than a similar plant with conventional cold gas cleanup system based on SelexolTM technology and 90 percent carbon capture. TDA’s system uses a high temperature physical adsorbent capable of removing CO{sub 2} above the dew point of the synthesis gas and a commercial WGS catalyst that can effectively convert CO in The overall objective of the project is to demonstrate the technical and economic viability of a new Integrated Gasification Combined Cycle (IGCC) power plant designed to efficiently process low rank coals. The plant uses an integrated CO{sub 2} scrubber/Water Gas Shift (WGS) catalyst to capture over90 percent capture of the CO{sub 2} emissions, while providing a significantly lower cost of electricity (COE) than a similar plant with conventional cold gas cleanup system based on SelexolTM technology and 90 percent carbon capture. TDA’s system uses a high temperature …
Date:
September 30, 2013
Creator:
Alptekin, Gokhan
Object Type:
Report
System:
The UNT Digital Library
Advanced Low Energy Enzyme Catalyzed Solvent for CO₂ Capture
A proof-of-concept biocatalyst enhanced solvent process was developed and demonstrated in an integrated bench-scale system using coal post combustion flue gas. The biocatalyst was deployed as a coating on M500X structured packing. Rate enhancement was evaluated using a non-volatile and non- toxic 20 wt% potassium carbonate solution. Greater than 500-fold volumetric scale-up from laboratory to bench scale was demonstrated in this project. Key technical achievements included: 10-fold mass transfer enhancement demonstrated in laboratory testing relative to blank potassium carbonate at 45°C; ~ 7-fold enhancement over blank in bench-scale field testing at National Carbon Capture Center; aerosol emissions were below detection limits (< 0.8 ppm); 90% capture was demonstrated at ~19.5 Nm{sup 3}/hr (dry basis); and ~ 80% CO{sub 2} capture was demonstrated at ~ 30 Nm{sup 3}/hr (dry basis) for more than 2800-hrs on flue gas with minimal detectible decline in activity. The regeneration energy requirement was 3.5 GJ/t CO{sub 2} for this solvent, which was below the target of <2.1 GJ/t CO{sub 2}. Bench unit testing revealed kinetic limitations in the un-catalyzed stripper at around 85°C, but process modeling based on bench unit data showed that equivalent work of less than 300 kWh/t CO{sub 2} including all CO{sub 2} …
Date:
September 30, 2013
Creator:
Zaks, Alex
Object Type:
Report
System:
The UNT Digital Library
Amorphous Alloy Membranes for High Temperature Hydrogen Separation
At the beginning of this project, thin film amorphous alloy membranes were considered a nascent but promising new technology for industrial-scale hydrogen gas separations from coal- derived syngas. This project used a combination of theoretical modeling, advanced physical vapor deposition fabricating, and laboratory and gasifier testing to develop amorphous alloy membranes that had the potential to meet Department of Energy (DOE) targets in the testing strategies outlined in the NETL Membrane Test Protocol. The project is complete with Southwest Research Institute® (SwRI®), Georgia Institute of Technology (GT), and Western Research Institute (WRI) having all operated independently and concurrently. GT studied the hydrogen transport properties of several amorphous alloys and found that ZrCu and ZrCuTi were the most promising candidates. GT also evaluated the hydrogen transport properties of V, Nb and Ta membranes coated with different transition-metal carbides (TMCs) (TM = Ti, Hf, Zr) catalytic layers by employing first-principles calculations together with statistical mechanics methods and determined that TiC was the most promising material to provide catalytic hydrogen dissociation. SwRI developed magnetron coating techniques to deposit a range of amorphous alloys onto both porous discs and tubular substrates. Unfortunately none of the amorphous alloys could be deposited without pinhole defects that …
Date:
September 30, 2013
Creator:
Coulter, K
Object Type:
Report
System:
The UNT Digital Library
ANALYSIS OF THE AXIAL GAP VS FIBERBOARD MOISTURE CONTENT IN A 9975 SHIPPING PACKAGE
The fiberboard assembly within a 9975 shipping package contains a modest amount of moisture, which can migrate to the cooler regions of the package when an internal heat load is present. Typically, this leads to increased moisture levels in the bottom fiberboard layers, along with elevated chloride levels which can leach from the fiberboard. Concerns have been raised that this condition could lead to corrosion of the stainless steel drum. It has been postulated that checking the axial gap at the top of the package against the current 1 inch maximum criterion provides a sufficient indication regarding the integrity of the fiberboard and drum. This report estimates the increase in axial gap that might be expected for a given moisture increase in the bottom fiberboard layers, and the likelihood that the increase will create a nonconforming condition that will lead to identification of the moisture increase. Using data relating the fiberboard moisture content with the degree of compaction under load, the present analysis indicates that the axial gap will increase by 0.282 inch as the bottom fiberboard layers approach the saturation point. This increase will cause approximately 58% of packages with otherwise nominal package component dimensions to fail the axial …
Date:
September 30, 2013
Creator:
Daugherty, W.
Object Type:
Report
System:
The UNT Digital Library
A Beam Driven Plasma-Wakefield Linear Collider: From Higgs Factory to Multi-TeV
None
Date:
September 30, 2013
Creator:
Adli, E.; Delahaye, J. P.; Gessner, S. J.; Hogan, M. J.; Raubenheimer, T.; An, W. et al.
Object Type:
Article
System:
The UNT Digital Library
Budget Issues: Key Questions to Consider When Evaluating Balances in Federal Accounts
A letter report issued by the Government Accountability Office with an abstract that begins "Carryover balances in fiscal year 2012 were $2.2 trillion, of which about $800 billion had not yet been obligated. Answering key questions during review of carryover balances provides insights into why a balance exists, what size balance is appropriate, and what opportunities (if any) for savings exist. Given that a single account may support a single program or multiple programs--or that multiple accounts may support a single program--these questions can be applied when evaluating balances at either the account or program level. Examination of balances may assist decision makers in identifying opportunities to achieve budgetary savings or redirecting resources to other priorities. However, the complexity of the federal budget is such that a case-by-case analysis is needed to understand how best to achieve these financial benefits."
Date:
September 30, 2013
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Carbon Capture and Sequestration: Research, Development, and Demonstration at the U.S. Department of Energy
This report aims to provide a snapshot of the U.S. Department of Energy (DOE) Carbon capture and sequestration (CCS) program, including its current funding levels and the budget request for FY2014, together with some discussion of the program's achievements and prospects for success in meeting its stated goals.
Date:
September 30, 2013
Creator:
Folger, Peter
Object Type:
Report
System:
The UNT Digital Library
Characterization of Oxy-combustion Impacts in Existing Coal-fired Boilers
Reaction Engineering International (REI) managed a team of experts from University of Utah, Siemens Energy, Praxair, Vattenfall AB, Sandia National Laboratories, Brigham Young University (BYU) and Corrosion Management Ltd. to perform multi-scale experiments, coupled with mechanism development, process modeling and CFD modeling, for both applied and fundamental investigations. The primary objective of this program was to acquire data and develop tools to characterize and predict impacts of CO{sub 2} flue gas recycle and burner feed design on flame characteristics (burnout, NO{sub x}, SO{sub x}, mercury and fine particle emissions, heat transfer) and operational concerns (fouling, slagging and corrosion) inherent in the retrofit of existing coal-fired boilers for oxy-coal combustion. Experimental work was conducted at Sandia National Laboratories’ Entrained Flow Reactor, the University of Utah Industrial Combustion Research Facility, and Brigham Young University. Process modeling and computational fluid dynamics (CFD) modeling was performed at REI. Successful completion of the project objectives resulted in the following key deliverables: 1) Multi-scale test data from 0.1 kW bench-scale, 100 kW and 200 kW laboratory-scale, and 1 MW semi-industrial scale combustors that describe differences in flame characteristics, fouling, slagging and corrosion for coal combustion under air-firing and oxygen-firing conditions, including sensitivity to oxy-burner design and …
Date:
September 30, 2013
Creator:
Adams, Bradley; Davis, Kevin; Senior, Constance; Shim, Hong Shim; Otten, Brydger; Fry, Andrew et al.
Object Type:
Report
System:
The UNT Digital Library
Chlorite Dissolution Kinetics at Variable pH and Temperatures up to 275C
None
Date:
September 30, 2013
Creator:
Carroll, S. & Smith, M.
Object Type:
Report
System:
The UNT Digital Library
CHP Integrated with Burners for Packaged Boilers
The objective of this project was to engineer, design, fabricate, and field demonstrate a Boiler Burner Energy System Technology (BBEST) that integrates a low-cost, clean burning, gas-fired simple-cycle (unrecuperated) 100 kWe (net) microturbine (SCMT) with a new ultra low-NOx gas-fired burner (ULNB) into one compact Combined Heat and Power (CHP) product that can be retrofit on new and existing industrial and commercial boilers in place of conventional burners. The Scope of Work for this project was segmented into two principal phases: (Phase I) Hardware development, assembly and pre-test and (Phase II) Field installation and demonstration testing. Phase I was divided into five technical tasks (Task 2 to 6). These tasks covered the engineering, design, fabrication, testing and optimization of each key component of the CHP system principally, ULNB, SCMT, assembly BBEST CHP package, and integrated controls. Phase I work culminated with the laboratory testing of the completed BBEST assembly prior to shipment for field installation and demonstration. Phase II consisted of two remaining technical tasks (Task 7 and 8), which focused on the installation, startup, and field verification tests at a pre-selected industrial plant to document performance and attainment of all project objectives. Technical direction and administration was under the …
Date:
September 30, 2013
Creator:
Castaldini, Carlo & Darby, Eric
Object Type:
Report
System:
The UNT Digital Library
Chronic, Multi-Contact, Neural Interface for Deep Brain Stimulation
None
Date:
September 30, 2013
Creator:
Tooker, A. C.; Madsen, T. E.; Crowell, A.; Shah, K. G.; Felix, S. H.; Mayberg, H. S. et al.
Object Type:
Article
System:
The UNT Digital Library
Civil Support: Actions Are Needed to Improve DOD's Planning for a Complex Catastrophe
A letter report issued by the Government Accountability Office with an abstract that begins "U.S. Northern Command (NORTHCOM) and U.S. Pacific Command (PACOM) are updating their existing civil support plans to include a complex catastrophe scenario, as directed by the Secretary of Defense and the Joint Staff. However, the commands are delaying the identification of capabilities that could be provided to execute the plans until the Federal Emergency Management Agency (FEMA), the lead federal response agency, completes its regional planning efforts in 2018. NORTHCOM officials told us that the command's civil support plan would describe some general force requirements, such as types of military units, but that it will not identify specific capabilities that could be provided to civil authorities during a complex catastrophe. Similarly, according to PACOM officials, PACOM's plan also will not identify such capabilities. Still, defense coordinating officers--senior military officers who work closely with federal, state, and local officials in FEMA's regional offices--have taken some initial steps to coordinate with FEMA during its regional planning process to identify capabilities that the Department of Defense (DOD) may be required to provide in some regions. For example, a defense coordinating officer has helped one of the FEMA regions that …
Date:
September 30, 2013
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Color Maintenance of LEDs in Laboratory and Field Applications
Synopsis: To date, consideration for parametric failure of LED products has largely been focused on lumen maintenance. However, color shift is a cause of early failure for some products, and is especially important to consider in certain applications, like museums, where visual appearance is critical. Example data collected by the GATEWAY program for LED lamps installed in museums shows that many have changed color beyond a reasonable tolerance well before their rated lifetime was reached, necessitating replacement. Similar data collected by the CALiPER program between 2008 and 2010 reveals that many early products shifted beyond acceptable tolerances in as little as a few thousand hours. In contrast, data from the L Prize program illustrates that commercially available LED products can have exemplary color stability that is unmatched by traditional light sources. Beyond presenting data from the aforementioned DOE programs, this report discusses the metrics used for communicating color shift—namely MacAdam ellipses and Δu'v'—as well as providing guidance for end users on how to monitor color shift and what to look for in manufacturer warranties. Also included are descriptions of the physical changes that have been documented as leading to color shift in some example types of LED packages. As with …
Date:
September 30, 2013
Creator:
Royer, Michael P.; Tuttle, Ralph; Rosenfeld, Scott M. & Miller, Naomi J.
Object Type:
Report
System:
The UNT Digital Library
Commission on Long-Term Care: Report to the Congress
The federal Commission on Long-Term Care. Established as part of the American Taxpayer Relief Act of 2012 and signed into law January 2, 2013, the commission's goal was to advise Congress on how comprehensive, high-quality long-term care can be better provided and financed for the nation's older adults and people with disabilities. The Commission is composed of 15 members of the Senate and House of Representatives and released this final report on September 18, 2013. In this document, the commission charted a vision of a fiscally sustainable and effective service delivery system built around concepts of person-and-family-centered care, with integration of long-term services and supports (LTSS) and medicare for both older and younger people with significant cognitive or physical functional limitations. The report provides a solid foundation from which Congress and federal agencies can initiate a more extensive effort to confront the identified LTSS challenges and to move forward on the development and implementation of a better, more comprehensive LTSS system.
Date:
September 30, 2013
Creator:
United States Senate Commission on Long-Term Care
Object Type:
Report
System:
The UNT Digital Library
Defense Health Care: Evaluation of TRICARE Pharmacy Services Contract Structure Is Warranted
A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Defense (DOD) used various methods to identify needed changes to requirements for its upcoming pharmacy services contract. During acquisition planning for the upcoming TRICARE pharmacy services contract, DOD solicited feedback from industry through its market research process to align the contract requirements with industry best practices and promote competition. For example, DOD issued requests for information (RFI) in which DOD asked questions about specific market trends, such as ensuring that certain categories of drugs are distributed through the most cost-effective mechanism. DOD also issued an RFI to obtain information on promoting competition, asking industry for opinions on the length of the contract period. DOD officials told us that responses indicated that potential offerors would prefer a longer contract period because it would allow a new contractor more time to recover any capital investment made in implementing the contract. The request for proposals for the upcoming contract, issued in June 2013, included a contract period of 1 base year and 7 option years. DOD also identified changes to contract requirements in response to legislative changes to the TRICARE pharmacy benefit. For example, the National …
Date:
September 30, 2013
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Denton Record-Chronicle (Denton, Tex.), Vol. 110, No. 59, Ed. 1 Monday, September 30, 2013
Daily newspaper from Denton, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 2013
Creator:
Cobb, Dawn
Object Type:
Newspaper
System:
The Portal to Texas History
Development Of A Macro-Batch Qualification Strategy For The Hanford Tank Waste Treatment And Immobilization Plant
The Savannah River National Laboratory (SRNL) has evaluated the existing waste feed qualification strategy for the Hanford Tank Waste Treatment and Immobilization Plant (WTP) based on experience from the Savannah River Site (SRS) Defense Waste Processing Facility (DWPF) waste qualification program. The current waste qualification programs for each of the sites are discussed in the report to provide a baseline for comparison. Recommendations on strategies are then provided that could be implemented at Hanford based on the successful Macrobatch qualification strategy utilized at SRS to reduce the risk of processing upsets or the production of a staged waste campaign that does not meet the processing requirements of the WTP. Considerations included the baseline WTP process, as well as options involving Direct High Level Waste (HLW) and Low Activity Waste (LAW) processing, and the potential use of a Tank Waste Characterization and Staging Facility (TWCSF). The main objectives of the Hanford waste feed qualification program are to demonstrate compliance with the Waste Acceptance Criteria (WAC), determine waste processability, and demonstrate unit operations at a laboratory scale. Risks to acceptability and successful implementation of this program, as compared to the DWPF Macro-Batch qualification strategy, include: Limitations of mixing/blending capability of the Hanford …
Date:
September 30, 2013
Creator:
Herman, Connie C.
Object Type:
Report
System:
The UNT Digital Library
DHS Financial Management: Additional Efforts Needed to Resolve Deficiencies in Internal Controls and Financial Management Systems
A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Homeland Security (DHS) has made considerable progress toward obtaining a clean opinion on its financial statements but limited progress in obtaining a clean opinion on its internal control over financial reporting. DHS continues to rely on compensating controls and complex manual work-arounds rather than sound internal control over financial reporting and effective financial management systems. DHS is working to resolve the deficiencies that caused its auditors to issue a qualified opinion on its fiscal year 2012 financial statements and has a goal of achieving a clean opinion in fiscal year 2013. In addition, DHS has plans to resolve the remaining five material internal control weaknesses, with a goal of achieving a clean opinion on internal control over financial reporting for fiscal year 2016. However, DHS's auditors stated that they may have identified additional material weaknesses in fiscal year 2012 had they been able to perform sufficient work to enable them to express an opinion on the effectiveness of DHS's internal control over financial reporting. DHS will continue to face challenges in obtaining and sustaining a clean opinion on its financial statements and attaining …
Date:
September 30, 2013
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
District of Columbia Opportunity Scholarship Program: Actions Needed to Address Weaknesses in Administration and Oversight
A letter report issued by the Government Accountability Office with an abstract that begins "The DC Children and Youth Investment Trust Corporation (the Trust) provides information to prospective and current families of children participating in the District of Columbia (the District) Opportunity Scholarship Program (OSP) through a variety of outreach activities. To reach prospective OSP families, the Trust advertises through print, radio, and bus ads, as well as in newspapers and flyers posted in neighborhood libraries, recreation centers, and local government service centers. However, the Trust provides incomplete and untimely information about participating schools to OSP families. The participating school directory, which is published by the Trust, lacks key information about tuition, fees, and accreditation. The Trust published the directory 9 months after the start of the 2012-13 school year, too late to assist families in selecting a school for that year. Without such information, parents cannot make fully informed school choices. Additionally, the Trust awarded scholarships to students several months after many schools completed their admissions and enrollment processes, limiting the amount of time and choice in selecting schools. Most families GAO spoke with were generally happy with OSP but some were concerned about the availability of program information."
Date:
September 30, 2013
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Doctoral Lecture Recital: 2013-09-30 – Sarah Daniels, mezzo-contralto
Doctoral Lectural Recital given at Voertman Hall on September 30th, 2013
Date:
September 30, 2013
Creator:
Daniels, Sarah
Object Type:
Sound
System:
The UNT Digital Library
DOE Commercial Building Energy Asset Score Web Service (Draft)
Documentation of the DOE Commercial Building Energy Asset Score application programming interface (API).
Date:
September 30, 2013
Creator:
Elliott, Geoffrey & Wang, Na
Object Type:
Report
System:
The UNT Digital Library
[Dr. Akira Miyahara with Koji Fuse]
Photograph of visiting professor Dr. Akira Miyahara, director of the Center for Language Education and professor of communication studies and English at Seinan Gakuin University in Fukuoka, Japan, with UNT professors Koji Fuse and Cornelius Foote, Jr.
Date:
September 30, 2013
Creator:
Clark, Junebug
Object Type:
Photograph
System:
The UNT Digital Library
EPA Standards for Greenhouse Gas Emissions from Power Plants: Many Questions, Some Answers
This report discusses the Environmental Protection Agency (EPA), and the New Source Performance Standards (NSPS) proposals for electric generating units (EGU) Greenhouse Gas Emissions.
Date:
September 30, 2013
Creator:
McCarthy, James E.
Object Type:
Report
System:
The UNT Digital Library