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The Altus Times (Altus, Okla.), Vol. 113, No. 124, Ed. 1 Tuesday, November 20, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 20, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 113, No. 146, Ed. 1 Thursday, December 20, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 20, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
America COMPETES 2010 and the FY2013 Budget
The 112th Congress faces several budget and appropriations decisions that may affect implementation of the America COMPETES Reauthorization Act of 2010. Signed on January 4, 2011, this law seeks to improve U.S. competitiveness and innovation by authorizing, among other things, increased federal support for research in the physical sciences and engineering; and science, technology, engineering, and mathematics (STEM) education. The specific debate about FY2013 funding for America COMPETES 2010 provisions will occur within the broader context of the national conversation about U.S. competitiveness.
Date:
March 20, 2012
Creator:
Gonzalez, Heather B.
Object Type:
Report
System:
The UNT Digital Library
Analysis of beam loss induced abort kicker instability
Through more than a decade of operation, we have noticed the phenomena of beam loss induced kicker instability in the RHIC beam abort systems. In this study, we analyze the short term beam loss before abort kicker pre-fire events and operation conditions before capacitor failures. Beam loss has caused capacitor failures and elevated radiation level concentrated at failed end of capacitor has been observed. We are interested in beam loss induced radiation and heat dissipation in large oil filled capacitors and beam triggered thyratron conduction. We hope the analysis result would lead to better protection of the abort systems and improved stability of the RHIC operation.
Date:
May 20, 2012
Creator:
Zhang, W.; Sandberg, J.; Ahrens, L.; Fischer, W.; Hahn, H.; Mi, J. et al.
Object Type:
Article
System:
The UNT Digital Library
ANALYSIS OF DWPF SLUDGE BATCH 6 (MACROBATCH 7) POUR STREAM GLASS SAMPLES
The Defense Waste Processing Facility (DWPF) began processing Sludge Batch 6 (SB6), also referred to as Macrobatch 7 (MB7), in June 2010. SB6 is a blend of the heel of Tank 40 from Sludge Batch 5 (SB5), H-Canyon Np transfers and SB6 that was transferred to Tank 40 from Tank 51.1 SB6 was processed using Frit 418. Sludge is received into the DWPF Chemical Processing Cell (CPC) and is processed through the Sludge Receipt and Adjustment Tank (SRAT) and Slurry Mix Evaporator Tank (SME). The treated sludge slurry is then transferred to the Melter Feed Tank (MFT) and fed to the melter. During processing of each sludge batch, the DWPF is required to take at least one glass sample to meet the objectives of the Glass Product Control Program (GPCP) and to complete the necessary Production Records so that the final glass product may be disposed of at a Federal Repository. The DWPF requested various analyses of radioactive glass samples obtained from the melter pour stream during processing of SB6 as well as reduction/oxidation (REDOX) analysis of MFT samples to determine the impact of Argon bubbling. Sample analysis followed the Task Technical and Quality Assurance Plan (TTQAP) and an Analytical …
Date:
January 20, 2012
Creator:
Johnson, F.
Object Type:
Report
System:
The UNT Digital Library
Analysis of kicker noise induced beam emittance growth
Over the last few years, physicists have occasionally observed the presence of noise acting on the RHIC beams leading to emittance growth at high beam energies. While the noise was sporadic in the past, it became persistent during the Run-11 setup period. An investigation diagnosed the source as originating from the RHIC dump kicker system. Once identified the issue was quickly resolved. We report in this paper the investigation result, circuit analysis, measured and simulated waveforms, solutions, and future plans.
Date:
May 20, 2012
Creator:
Zhang, W.; Sandberg, J.; Ahrens, L.; Blacker, I. M.; Brennan, M.; Blaskiewicz, M. et al.
Object Type:
Article
System:
The UNT Digital Library
ANALYSIS OF THE TANK 5F FINAL CHARATERIZATION SAMPLES-2011
The Savannah River National Laboratory (SRNL) was requested by SRR to provide sample preparation and analysis of the Tank 5F final characterization samples to determine the residual tank inventory prior to grouting. Two types of samples were collected and delivered to SRNL: floor samples across the tank and subsurface samples from mounds near risers 1 and 5 of Tank 5F. These samples were taken from Tank 5F between January and March 2011. These samples from individual locations in the tank (nine floor samples and six mound Tank 5F samples) were each homogenized and combined in a given proportion into 3 distinct composite samples to mimic the average composition in the entire tank. These Tank 5F composite samples were analyzed for radiological, chemical and elemental components. Additional measurements performed on the Tank 5F composite samples include bulk density and water leaching of the solids to account for water soluble species. With analyses for certain challenging radionuclides as the exception, all composite Tank 5F samples were analyzed and reported in triplicate. The target detection limits for isotopes analyzed were based on customer desired detection limits as specified in the technical task request documents. SRNL developed new methodologies to meet these target detection …
Date:
January 20, 2012
Creator:
Oji, L.; Diprete, D.; Coleman, C. & Hay, M.
Object Type:
Report
System:
The UNT Digital Library
ANALYTICAL RESULTS OF MOX COLEMANITE CONCRETE SAMPLE PBC-44.2
The Mixed Oxide Fuel Fabrication Facility (MFFF) will use colemanite bearing concrete neutron absorber panels credited with attenuating neutron flux in the criticality design analyses and shielding operators from radiation. The Savannah River National Laboratory is tasked with measuring the total density, partial hydrogen density, and partial boron density of the colemanite concrete. Sample PBC-44.2 was received on 9/20/2012 and analyzed. The average total density measured by the ASTM method C 642 was 2.03 g/cm{sup 3}, within the lower bound of 1.88 g/cm3. The average partial hydrogen density was 6.64E-02 g/cm{sup 3} as measured using method ASTM E 1311 and met the lower bound of 6.04E-02 g/cm{sup 3}. The average measured partial boron density was 1.70E-01 g/cm{sup 3} which met the lower bound of 1.65E-01 g/cm{sup 3} measured by the ASTM C 1301 method.
Date:
December 20, 2012
Creator:
Best, D.; Cozzi, A. & Reigel, M.
Object Type:
Report
System:
The UNT Digital Library
ANALYTICAL RESULTS OF MOX COLEMANITE CONCRETE SAMPLES POURED AUGUST 29, 2012
The Mixed Oxide Fuel Fabrication Facility (MFFF) will use colemanite bearing concrete neutron absorber panels credited with attenuating neutron flux in the criticality design analyses and shielding operators from radiation. The Savannah River National Laboratory is tasked with measuring the total density, partial hydrogen density, and partial boron density of the colemanite concrete. Samples poured 8/29/12 were received on 9/20/2012 and analyzed. The average total density of each of the samples measured by the ASTM method C 642 was within the lower bound of 1.88 g/cm{sup 3}. The average partial hydrogen density of samples 8.6.1, 8.7.1, and 8.5.3 as measured using method ASTM E 1311 met the lower bound of 6.04E-02 g/cm{sup 3}. The average measured partial boron density of each sample met the lower bound of 1.65E-01 g/cm{sup 3} measured by the ASTM C 1301 method. The average partial hydrogen density of samples 8.5.1, 8.6.3, and 8.7.3 did not meet the lower bound. The samples, as received, were not wrapped in a moist towel as previous samples and appeared to be somewhat drier. This may explain the lower hydrogen partial density with respect to previous samples.
Date:
December 20, 2012
Creator:
Best, D.; Cozzi, A. & Reigel, M.
Object Type:
Report
System:
The UNT Digital Library
Animal Waste and Hazardous Substances: Current Laws and Legislative Issues
The report is categorized into four categories: (I) CERLA and EPCRA, (II) Enforcement Against AFO's, (III) Congressional Interest and (IV) Policy Issue.
Date:
July 20, 2012
Creator:
Copeland, Claudia
Object Type:
Report
System:
The UNT Digital Library
THE APPARENT SOLUBILITY OF ALUMINUM(III) IN HANFORD HIGH-LEVEL WASTE TANKS
The solubility of aluminum in Hanford nuclear waste impacts on the process ability of the waste by a number of proposed treatment options. For many years, Hanford staff has anecdotally noted that aluminum appears to be considerably more soluble in Hanford waste than the simpler electrolyte solutions used as analogues. There has been minimal scientific study to confirm these anecdotal observations, however. The present study determines the apparent solubility product for gibbsite in 50 tank samples. The ratio of hydroxide to aluminum in the liquid phase for the samples is calculated and plotted as a function of total sodium molarity. Total sodium molarity is used as a surrogate for ionic strength, because the relative ratios of mono, di and trivalent anions are not available for all of the samples. These results were compared to the simple NaOH-NaAl(OH{sub 4})H{sub 2}O system, and the NaOH-NaAl(OH{sub 4})NaCl-H{sub 2}O system data retrieved from the literature. The results show that gibbsite is apparently more soluble in the samples than in the simple systems whenever the sodium molarity is greater than two. This apparent enhanced solubility cannot be explained solely by differences in ionic strength. The change in solubility with ionic strength in simple systems is …
Date:
June 20, 2012
Creator:
JG, REYNOLDS
Object Type:
Article
System:
The UNT Digital Library
APPLICATION OF COLUMN EXTRACTION METHOD FOR IMPURITIES ANALYSIS ON HB-LINE PLUTONIUM OXIDE IN SUPPORT OF MOX FEED PRODUCT SPECIFICATIONS
The current mission at H-Canyon involves the dissolution of an Alternate Feedstocks 2 (AFS-2) inventory that contains plutonium metal. Once dissolved, HB-Line is tasked with purifying the plutonium solution via anion exchange, precipitating the Pu as oxalate, and calcining to form plutonium oxide (PuO{sub 2}). The PuO{sub 2} will provide feed product for the Mixed Oxide (MOX) Fuel Fabrication Facility, and the anion exchange raffinate will be transferred to H-Canyon. The results presented in this report document the potential success of the RE resin column extraction application on highly concentrated Pu samples to meet MOX feed product specifications. The original 'Hearts Cut' sample required a 10000x dilution to limit instrument drift on the ICP-MS method. The instrument dilution factors improved to 125x and 250x for the sample raffinate and sample eluent, respectively. As noted in the introduction, the significantly lower dilutions help to drop the total MRL for the analyte. Although the spike recoveries were half of expected in the eluent for several key elements, they were between 94-98% after Nd tracer correction. It is seen that the lower ICD limit requirements for the rare earths are attainable because of less dilution. Especially important is the extremely low Ga limit …
Date:
March 20, 2012
Creator:
Jones, M.; Diprete, D. & Wiedenman, B.
Object Type:
Report
System:
The UNT Digital Library
Archer County News (Archer City, Tex.), Vol. 104, No. 38, Ed. 1 Thursday, September 20, 2012
Weekly newspaper from Archer City, Texas that includes local, state and national news along with advertising.
Date:
September 20, 2012
Creator:
Phillips, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Archer County News (Archer City, Tex.), Vol. 104, No. 51, Ed. 1 Thursday, December 20, 2012
Weekly newspaper from Archer City, Texas that includes local, state and national news along with advertising.
Date:
December 20, 2012
Creator:
Phillips, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Armed Conflict in Syria: U.S. and International Response
None
Date:
August 20, 2012
Creator:
Sharp, Jeremy M.
Object Type:
Report
System:
The UNT Digital Library
Army Drawdown and Restructuring: Background and Issues for Congress
On January 26, 2012, senior DOD leadership unveiled a new defense strategy based on a review of potential future security challenges, current defense strategy, and budgetary constraints. This new strategy envisions a smaller, leaner Army that is agile, flexible, rapidly deployable, and technologically advanced. This strategy will rebalance the Army's global posture and presence, emphasizing where potential problems are likely to arise, such as the Asia-Pacific region and the Middle East. Potential issues for Congress include the strategic risk posed by a smaller and restructured Army; the "health" of the Army given the impending downsizing; where the force will be based; the role of the National Guard and Reserves; and should the enrollment at the service academies (West Point) be reduced to pre-9/11 levels. This report will be updated as circumstances warrant.
Date:
April 20, 2012
Creator:
Feickert, Andrew & Henning, Charles A.
Object Type:
Report
System:
The UNT Digital Library
Assessment and Mitigation of Diagnostic-Generated Electromagnetic Interference at the National Ignition Facility
Electromagnetic interference (EMI) is an ever-present challenge at laser facilities such as the National Ignition Facility (NIF). The major source of EMI at such facilities is laser-target interaction that can generate intense electromagnetic fields within, and outside of, the laser target chamber. In addition, the diagnostics themselves can be a source of EMI, even interfering with themselves. In this paper we describe EMI generated by ARIANE and DIXI, present measurements, and discuss effects of the diagnostic-generated EMI on ARIANE's CCD and on a PMT nearby DIXI. Finally we present some of the efforts we have made to mitigate the effects of diagnostic-generated EMI on NIF diagnostics.
Date:
April 20, 2012
Creator:
Brown, C. G.; Ayers, M. J.; Felker, B.; Ferguson, W.; Holder, J P; Nagel, S. R. et al.
Object Type:
Article
System:
The UNT Digital Library
Asynchronous Checkpoint Migration with MRNet in the Scalable Checkpoint / Restart Library
Applications running on today's supercomputers tolerate failures by periodically saving their state in checkpoint files on stable storage, such as a parallel file system. Although this approach is simple, the overhead of writing the checkpoints can be prohibitive, especially for large-scale jobs. In this paper, we present initial results of an enhancement to our Scalable Checkpoint/Restart Library (SCR). We employ MRNet, a tree-based overlay network library, to transfer checkpoints from the compute nodes to the parallel file system asynchronously. This enhancement increases application efficiency by removing the need for an application to block while checkpoints are transferred to the parallel file system. We show that the integration of SCR with MRNet can reduce the time spent in I/O operations by as much as 15x. However, our experiments exposed new scalability issues with our initial implementation. We discuss the sources of the scalability problems and our plans to address them.
Date:
March 20, 2012
Creator:
Mohror, K.; Moody, A. & de Supinski, B. R.
Object Type:
Article
System:
The UNT Digital Library
Austin Community College District Requests for Legislative Appropriations: Fiscal Years 2014 and 2015
Report submitted by the Austin Community College District containing summaries of requests for appropriations and expenditures for the fiscal years 2014 and 2015 with supporting documentation.
Date:
August 20, 2012
Creator:
Austin Community College (Austin, Tex.)
Object Type:
Book
System:
The Portal to Texas History
Aviation Safety: FAA Has An Opportunity to Enhance Safety and Improve Oversight of Initial Pilot Training
A statement of record issued by the Government Accountability Office with an abstract that begins "FAAs pilot training requirements for certification of commercial pilots are not aligned with airline operations or emphasize skills that airlines consider important for greater aviation safety."
Date:
March 20, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Award ER25844: Minimizing System Noise Effects for Extreme-Scale Scientific Simulation Through Function Delegation
In software running on distributed computing clusters, time spent on communication between nodes in the cluster can be a significant portion of the overall computation time; background operating system tasks and other computational �noise� on the nodes of the system can have a significant impact on the amount of time this communication takes, especially on large systems. The research completed in this period has improved understanding of when such noise will have a significant impact. Specifically, it was demonstrated that not just noise on the nodes, but also noise on the network between nodes can have a significant impact on computation time. It was also demonstrated that noise patterns matter more than noise intensity: very regular noise can cause less disruption than lighter (on average) but less regular noise. It was also demonstrated that the effect of noise is more prominent as the speed of the network between nodes is increased. Furthermore, a tracing tool, Netgauge, was improved via our work, and a system simulator, LogGOPSim, was developed; they can be used by application developers to improve performance of their program and by system designers to mitigate the effects of noise by adjusting the noise characteristics of the operating system. …
Date:
November 20, 2012
Creator:
Lumsdaine, Andrew
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 92, No. 15, Ed. 1 Friday, January 20, 2012
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
January 20, 2012
Creator:
Yanelli, Adam
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 92, No. 56, Ed. 1 Tuesday, March 20, 2012
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
March 20, 2012
Creator:
Yanelli, Adam
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 92, No. 79, Ed. 1 Friday, April 20, 2012
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
April 20, 2012
Creator:
Yanelli, Adam
Object Type:
Newspaper
System:
The Portal to Texas History