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Analyses by the Defense Waste Processing Facility Laboratory of Thorium Glasses from the Sludge Batch 6 Variability Study (open access)

Analyses by the Defense Waste Processing Facility Laboratory of Thorium Glasses from the Sludge Batch 6 Variability Study

The Savannah River Remediation (SRR) Defense Waste Processing Facility (DWPF) is currently processing Sludge Batch 6 (SB6) with Frit 418. At times during the processing of this glass system, thorium is expected to be at concentrations in the final wasteform that make it a reportable element for the first time since startup of radioactive operations at the DWPF. The Savannah River National Laboratory (SRNL) supported the qualification of the processing of this glass system at the DWPF. A recommendation from the SRNL studies was the need for the DWPF Laboratory to establish a method to measure thorium by Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICPAES). This recommendation led to the set of thorium-bearing glasses from the SB6 Variability Study (VS) being submitted to the DWPF Laboratory for chemical composition measurement. The measurements were conducted by the DWPF Laboratory using the sodium peroxide fusion preparation method routinely employed for analysis of samples from the Slurry Mix Evaporator (SME). These measurements are presented and reviewed in this report. The review indicates that the measurements provided by the DWPF Laboratory are comparable to those provided by Analytical Development's laboratory at SRNL for these same glasses. As a result, the authors of this …
Date: February 28, 2011
Creator: Edwards, T.; Click, D. & Feller, M.
Object Type: Report
System: The UNT Digital Library
Analysis of IECC (2003, 2006, 2009) and ASHRAE 90.1-2007 Commercial Energy Code Requirements for Mesa, AZ. (open access)

Analysis of IECC (2003, 2006, 2009) and ASHRAE 90.1-2007 Commercial Energy Code Requirements for Mesa, AZ.

This report summarizes code requirements and energy savings of commercial buildings in Climate Zone 2B built to the 2009 IECC and ASHRAE Standard 90.1-2007 when compared to the 2003 IECC and the 2006 IECC. In general, the 2009 IECC and ASHRAE Standard 90.1-2007 have higher insulation requirements for exterior walls, roof, and windows and have higher efficiency requirements for HVAC equipment. HVAC equipment efficiency requirements are governed by National Appliance Conversion Act of 1987 (NAECA), and are applicable irrespective of the IECC version adopted. The energy analysis results show that commercial buildings meeting the 2009 IECC requirements save 4.4% to 9.5% site energy and 4.1% to 9.9% energy cost when compared to the 2006 IECC; and save 10.6% to 29.4% site energy and 10.3% to 29.3% energy cost when compared to the 2003 IECC. Similar analysis comparing ASHRAE Standard 90.1-2007 requirements to the 2006 IECC shows that the energy savings are in the 4.0% to 10.7% for multi-family and retail buildings, but less than 2% for office buildings. Further comparison of ASHRAE Standard 90.1-2007 requirements to the 2003 IECC show site energy savings in the range of 7.7% to 30.6% and energy cost savings range from 7.9% to 30.3%. Both …
Date: February 28, 2011
Creator: Huang, Yunzhi & Gowri, Krishnan
Object Type: Report
System: The UNT Digital Library
Battery-free Wireless Sensor Network For Advanced Fossil-Fuel Based Power Generation (open access)

Battery-free Wireless Sensor Network For Advanced Fossil-Fuel Based Power Generation

This report summarizes technical progress achieved during the project supported by the Department of Energy under Award Number DE-FG26-07NT4306. The aim of the project was to conduct basic research into battery-free wireless sensing mechanism in order to develop novel wireless sensors and sensor network for physical and chemical parameter monitoring in a harsh environment. Passive wireless sensing platform and five wireless sensors including temperature sensor, pressure sensor, humidity sensor, crack sensor and networked sensors developed and demonstrated in our laboratory setup have achieved the objective for the monitoring of various physical and chemical parameters in a harsh environment through remote power and wireless sensor communication, which is critical to intelligent control of advanced power generation system. This report is organized by the sensors developed as detailed in each progress report.
Date: February 28, 2011
Creator: Jia, Yi
Object Type: Report
System: The UNT Digital Library

[Breakfast hall in the Driskell Hotel in Austin]

Photograph of a dining hall where many guests are seen having their breakfast as a man stands at a podium and speaks to them during the 2011 Texas Daily Newspaper Association annual meeting held at the Driskell Hotel in Austin.
Date: February 28, 2011
Creator: Sharp, Andy
Object Type: Photograph
System: The UNT Digital Library
Coal/Biomass Gasification at the Colorado School of Mines (open access)

Coal/Biomass Gasification at the Colorado School of Mines

This program was a 2.5 year effort focused on technologies that support coal and biomass gasification. Two primary tasks were included in the effort: 1) Coal/Biomass gasification and system optimization and 2) development of high temperature microchannel ceramic heat exchangers.
Date: February 28, 2011
Creator: Parker, Terry; Braun, Robert; Dreyer, Chris; Dean, Anthony; Eberhart, Mark; Kee, Robert et al.
Object Type: Report
System: The UNT Digital Library
Completion Report for Wells ER-20-8 and ER-20-8#2 Corrective Action Units 101 and 102: Central and Western Pahute Mesa (open access)

Completion Report for Wells ER-20-8 and ER-20-8#2 Corrective Action Units 101 and 102: Central and Western Pahute Mesa

Wells ER-20-8 and ER-20-8#2 were drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office in support of the Nevada Environmental Restoration Project at the Nevada National Security Site (formerly Nevada Test Site), Nye County, Nevada. The holes were drilled in July and August 2009, as part of the Pahute Mesa Phase II drilling program. The primary purpose of these wells was to provide detailed hydrogeologic information in the Tertiary volcanic section that will help address uncertainties within the Pahute Mesa–Oasis Valley hydrostratigraphic framework model. They may also be used as long-term monitoring wells.
Date: February 28, 2011
Creator: National Security Technologies, LLC
Object Type: Report
System: The UNT Digital Library
Continuing Resolutions: Latest Action and Brief Overview of Recent Practices (open access)

Continuing Resolutions: Latest Action and Brief Overview of Recent Practices

This report is divided into two segments. The first section provides the most recent information on the FY2011 continuing resolution. The second segment focuses on the (1) history and recent trends, including the nature, scope, and duration of CRs during the past 35 years; (2) CR types by duration; (3) major substantive legislative provisions included in some CRs; and (4) funding gaps.
Date: February 28, 2011
Creator: Streeter, Sandy
Object Type: Report
System: The UNT Digital Library
Critical challenges for EUV resist materials (open access)

Critical challenges for EUV resist materials

Although Extreme ultraviolet lithography (EUVL) is now well into the commercialization phase, critical challenges remain in the development of EUV resist materials. The major issue for the 22-nm half-pitch node remains simultaneously meeting resolution, line-edge roughness (LER), and sensitivity requirements. Although several materials have met the resolution requirements, LER and sensitivity remain a challenge. As we move beyond the 22-nm node, however, even resolution remains a significant challenge. Chemically amplified resists have yet to demonstrate the required resolution at any speed or LER for 16-nm half pitch and below. Going to non-chemically amplified resists, however, 16-nm resolution has been achieved with a LER of 2 nm but a sensitivity of only 70 mJ/cm{sup 2}.
Date: February 28, 2011
Creator: Naulleau, Patrick P.; Anderson, Christopher N.; Baclea-an, Lorie-Mae; Denham, Paul; George, Simi; Goldberg, Kenneth A. et al.
Object Type: Article
System: The UNT Digital Library

[Dale Robertson receiving award]

Photograph of Dale Robertson receiving an award during the 2011 Texas Daily Newspaper Association annual meeting held at the Driskell Hotel in Austin. The award reads, "Fred Hartman Award for excellence in sports writing to Dale Robertson."
Date: February 28, 2011
Creator: Sharp, Andy
Object Type: Photograph
System: The UNT Digital Library

[Darrell Coleman receiving an award]

Photograph of Darrell Coleman (left) receiving an award from an unidentified man during the 2011 Texas Daily Newspaper Association annual meeting held at the Driskell Hotel in Austin.
Date: February 28, 2011
Creator: Sharp, Andy
Object Type: Photograph
System: The UNT Digital Library
Defense Health: Management Weaknesses at Defense Centers of Excellence for Psychological Health and Traumatic Brain Injury Require Attention (open access)

Defense Health: Management Weaknesses at Defense Centers of Excellence for Psychological Health and Traumatic Brain Injury Require Attention

A letter report issued by the Government Accountability Office with an abstract that begins "The Defense Centers of Excellence for Psychological Health and Traumatic Brain Injury (DCOE) was established to lead DOD's effort to develop excellence in DOD prevention, outreach, and care for those with psychological health and traumatic brain injury conditions. GAO was asked to report on (1) challenges DCOE has faced in its development; (2) the extent to which DCOE's strategic plan aligns with key practices used by leading public-sector organizations; and (3) the extent to which internal controls provide reasonable assurance that DCOE information on financial obligations is reliable for management decision making. GAO reviewed documentation and interviewed DCOE officials about DCOE development challenges, evaluated DCOE's strategic plan against practices used by leading public-sector organizations, assessed the design of internal controls for recording obligations, and tested fiscal year 2009 DCOE obligations to supporting documentation to determine if the obligations were properly classified."
Date: February 28, 2011
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Department of Energy: Advanced Technology Vehicle Loan Program Implementation Is Under Way, but Enhanced Technical Oversight and Performance Measures Are Needed (open access)

Department of Energy: Advanced Technology Vehicle Loan Program Implementation Is Under Way, but Enhanced Technical Oversight and Performance Measures Are Needed

A letter report issued by the Government Accountability Office with an abstract that begins "In the Energy Independence and Security Act of 2007, Congress mandated higher vehicle fuel economy by model year 2020 and established the Advanced Technology Vehicles Manufacturing (ATVM) loan program in the Department of Energy (DOE). ATVM is to provide up to $25 billion in loans for more fuel-efficient vehicles and components. Congress also provided $7.5 billion to pay the required credit subsidy costs--the government's estimated net long-term cost, in present value terms, of the loans. GAO was asked to review the ATVM program and agreed to (1) identify the steps DOE has taken to implement the program, (2) examine the program's progress in awarding loans, (3) assess how the program is overseeing the loans, and (4) evaluate the extent to which DOE can assess progress toward meeting its goals. GAO analyzed loan documents and relevant laws and regulations and interviewed DOE and ATVM officials."
Date: February 28, 2011
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library

Doctoral Recital: 2011-02-28 - Lisa Bost-Sandberg, flute and alto flute

Recital presented at the UNT College of Music Voertman Hall in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date: February 28, 2011
Creator: Bost-Sandberg, Lisa
Object Type: Sound
System: The UNT Digital Library
DOE SBIR Phase-1 Report on Hybrid CPU-GPU Parallel Development of the Eulerian-Lagrangian Barracuda Multiphase Program (open access)

DOE SBIR Phase-1 Report on Hybrid CPU-GPU Parallel Development of the Eulerian-Lagrangian Barracuda Multiphase Program

This report gives the result from the Phase-1 work on demonstrating greater than 10x speedup of the Barracuda computer program using parallel methods and GPU processors (General-Purpose Graphics Processing Unit or Graphics Processing Unit). Phase-1 demonstrated a 12x speedup on a typical Barracuda function using the GPU processor. The problem test case used about 5 million particles and 250,000 Eulerian grid cells. The relative speedup, compared to a single CPU, increases with increased number of particles giving greater than 12x speedup. Phase-1 work provided a path for reformatting data structure modifications to give good parallel performance while keeping a friendly environment for new physics development and code maintenance. The implementation of data structure changes will be in Phase-2. Phase-1 laid the ground work for the complete parallelization of Barracuda in Phase-2, with the caveat that implemented computer practices for parallel programming done in Phase-1 gives immediate speedup in the current Barracuda serial running code. The Phase-1 tasks were completed successfully laying the frame work for Phase-2. The detailed results of Phase-1 are within this document. In general, the speedup of one function would be expected to be higher than the speedup of the entire code because of I/O functions and …
Date: February 28, 2011
Creator: Snider, Dale M.
Object Type: Report
System: The UNT Digital Library

[Dolph and Teri Tillotson]

Photograph of Dolph Tillotson and his wife Teri, posing together as they are attending a cocktail hour at the 2011 Texas Daily Newspaper Association annual meeting held at the Driskell Hotel in Austin.
Date: February 28, 2011
Creator: Sharp, Andy
Object Type: Photograph
System: The UNT Digital Library

[Dolph Tillotson attending the breakfast session of the TDNA conference]

Photograph of Dolph Tillotson in attendance at the breakfast session during the 2011 Texas Daily Newspaper Association annual meeting held at the Driskell Hotel in Austin. Tillotson is seen holding his hands up in emphasis as he speaks.
Date: February 28, 2011
Creator: Sharp, Andy
Object Type: Photograph
System: The UNT Digital Library

[Doug Toney, Ken Herman, Wayne Slater and Ross Ramsey]

Photograph of four panelists seen seated at an elongated table and enjoying refreshments during the 2011 Texas Daily Newspaper Association annual meeting held at the Driskell Hotel in Austin. The four panelists (L-R) are, Doug Toney, Ken Herman, Wayne Slater and Ross Ramsey.
Date: February 28, 2011
Creator: Sharp, Andy
Object Type: Photograph
System: The UNT Digital Library
Effects On Beam Alignment Due To Neutron-Irradiated CCD Images At The National Ignition Facility (open access)

Effects On Beam Alignment Due To Neutron-Irradiated CCD Images At The National Ignition Facility

The 192 laser beams in the National Ignition Facility (NIF) are automatically aligned to the target-chamber center using images obtained through charged coupled device (CCD) cameras. Several of these cameras are in and around the target chamber during an experiment. Current experiments for the National Ignition Campaign are attempting to achieve nuclear fusion. Neutron yields from these high energy fusion shots expose the alignment cameras to neutron radiation. The present work explores modeling and predicting laser alignment performance degradation due to neutron radiation effects, and demonstrates techniques to mitigate performance degradation. Camera performance models have been created based on the measured camera noise from the cumulative single-shot fluence at the camera location. We have found that the effect of the neutron-generated noise for all shots to date have been well within the alignment tolerance of half a pixel, and image processing techniques can be utilized to reduce the effect even further on the beam alignment.
Date: February 28, 2011
Creator: Awwal, A.; Manuel, A.; Datte, P. & Burkhart, S.
Object Type: Article
System: The UNT Digital Library

Ensemble: 2011-02-28 – Special Concert for the National Association of Schools of Music Visitors

Access: Use of this item is restricted to the UNT Community
Concert presented at the UNT College of Music Voertman Hall.
Date: February 28, 2011
Creator: unknown
Object Type: Sound
System: The UNT Digital Library

Ensemble: 2011-02-28 – Special Concert for the National Association of Schools of Music Visitors

Access: Use of this item is restricted to the UNT Community
Special concert performed at the UNT College of Music Voertman Hall
Date: February 28, 2011
Creator: unknown
Object Type: Video
System: The UNT Digital Library
Evaluation of Cavity Collapse and Surface Crater Formation for Selected Lawrence Livermore National Laboratory Tests - 2011 (open access)

Evaluation of Cavity Collapse and Surface Crater Formation for Selected Lawrence Livermore National Laboratory Tests - 2011

This report evaluates collapse evolution for selected Lawrence Livermore National Laboratory (LLNL) underground nuclear tests at the Nevada National Security Site (NNSS, formerly called the Nevada Test Site). The work is being done at the request of National Security Technologies, LLC (NSTec) and supports the Department of Energy, National Nuclear Security Administration for the Nevada Site Office Borehole Management Program (BMP). The primary objective of this program is to close (plug) weapons program legacy boreholes that are deemed no longer useful. Safety decisions must be made before a crater area, or potential crater area, can be reentered for any work. Our statements on cavity collapse and crater formation are input into their safety decisions. The BMP is an on-going program to address hundreds of boreholes at the NTS. Each year NSTec establishes a list of holes to be addressed. They request the assistance of the Lawrence Livermore National Laboratory and Los Alamos National Laboratory Containment Programs to provide information related to the evolution of collapse history and make statements on completeness of collapse as relates to surface crater stability. These statements do not include the effects of erosion that may modify the collapse craters over time. They also do not …
Date: February 28, 2011
Creator: Pawloski, G. A.
Object Type: Report
System: The UNT Digital Library
EVALUATION OF THE DURABILITY OF THE STRUCTURAL CONCRETE OF REACTOR BUILDINGS AT SRS (open access)

EVALUATION OF THE DURABILITY OF THE STRUCTURAL CONCRETE OF REACTOR BUILDINGS AT SRS

The Department of Energy (DOE) intends to close 100-150 facilities in the DOE complex using an in situ decommissioning (ISD) strategy that calls for grouting the below-grade interior volume of the structure and leaving the above-grade interior open or demolishing it and disposing of it in the slit trenches in E Area. These closures are expected to persist and remain stable for centuries, but there are neither facility-specific monitoring approaches nor studies on the rate of deterioration of the materials used in the original construction or on the ISD components added during closure (caps, sloped roofs, etc). This report will focus on the evaluation of the actual aging/degradation of the materials of construction used in the ISD structures at Savannah River Site (SRS) above grade, specifically P & R reactor buildings. Concrete blocks (six 2 to 5 ton blocks) removed from the outer wall of the P Reactor Building were turned over to SRNL as the first source for concrete cores. Larger cores were received as a result of grouting activities in P and R reactor facilities. The cores were sectioned and evaluated using microscopy, x-ray diffraction (XRD), ion chromatography (IC) and thermal analysis. Scanning electron microscopy shows that the …
Date: February 28, 2011
Creator: Duncan, A. & Reigel, M.
Object Type: Report
System: The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Monday, February 28, 2011 (open access)

The Express-Star (Chickasha, Okla.), Ed. 1 Monday, February 28, 2011

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: February 28, 2011
Creator: Wray, Kelly
Object Type: Newspaper
System: The Gateway to Oklahoma History
Federal Register, Volume 76, Number 39, February 28, 2011, Pages 10755-11074 (open access)

Federal Register, Volume 76, Number 39, February 28, 2011, Pages 10755-11074

Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii.
Date: February 28, 2011
Creator: United States. Office of the Federal Register.
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library