Partner
UNT Libraries Government Documents Department
262
UNT Libraries Special Collections
77
Oklahoma Historical Society
41
UNT Libraries
15
Sterling Municipal Library
10
San Antonio Public Library
7
National Museum of the Pacific War/Admiral Nimitz Foundation
6
Patrick Heath Public Library
4
Rice University Woodson Research Center
4
Alvin Community College
3
41 More
Collection
Office of Scientific & Technical Information Technical Reports
149
Congressional Research Service Reports
93
Texas Digital Newspaper Program
89
José L. Castillo Photograph Collection
68
Tocker Foundation Grant
47
Oklahoma Digital Newspaper Program
43
Government Accountability Office Reports
12
The Greensheet
11
Altus Times-Democrat
10
The Baytown Sun
10
77 More
Serial/Series Title
Decade
Month
Day
Language
491 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
491
next
Social Security Administration: Service Delivery Plan Needed to Address Baby Boom Retirement Challenges
A letter report issued by the Government Accountability Office with an abstract that begins "Millions of people rely on the services of Social Security Administration (SSA) field offices. In fiscal year 2008, SSA's approximately 1,300 field offices provided service to about 44 million customers. People visit field offices to apply for Social Security cards, apply for retirement and disability benefits, establish direct deposit, and a host of other services. Over the last several years, staffing reductions have challenged field offices' ability to manage work while continuing to deliver quality customer service. To better understand the challenges SSA faces in delivering quality customer service, GAO was asked to determine (1) the effect that staffing reductions are having on field office operations and (2) the challenges SSA faces in meeting service delivery needs in the future and the agency's plan for addressing them. In May 2008, GAO reported initial observations on the effects of reduced staff levels. To conduct this work, GAO interviewed SSA headquarters and field officials and analyzed various data on SSA's workloads and customer service."
Date:
January 9, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Defense Business Transformation: Status of Department of Defense Efforts to Develop a Management Approach to Guide Business Transformation
Correspondence issued by the Government Accountability Office with an abstract that begins "This letter formally transmits GAO's findings on the status of the Department of Defense's efforts to develop a management approach to guide business transformation. This work was performed under the authority of the Comptroller General to conduct evaluations on his own initiative and as part of our work for GAO's High Risk Series, January 2009 Update."
Date:
January 9, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Social Security Disability: Improving Notices to Denied Claimants
Correspondence issued by the Government Accountability Office with an abstract that begins "On December 17, 2008, GAO issued a report concerning our findings on the Social Security Administration's (SSA) collection of medical evidence in the disability determination process. In the course of our review, an issue arose that was outside the scope of our work but is important to how SSA communicates its disability determinations to claimants. During this review, we examined a limited random selection of electronic folders for initial disability determinations for fiscal year 2007. The folders included notices sent to each denied claimant to explain the reasons for the denial of their claim and the evidence used to make the determination. Our findings related to these notices and current SSA policy regarding them is the subject of this report. This report also contains a recommendation that warrants SSA management's consideration."
Date:
January 9, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Securing, Stabilizing, and Rebuilding Iraq: Key Issues for Congressional Oversight
Other written product issued by the Government Accountability Office with an abstract that begins "As the United States reviews its plans to secure, stabilize, and rebuild Iraq, GAO has enclosed a series of issue papers for Congressional consideration in developing its oversight agenda for the 110th Congress and analyzing the President's revised strategy for Iraq. These papers are based on the continuing work of the U.S. Government Accountability Office and the 67 Iraq-related reports and testimonies we have provided to the Congress since May 2003. Iraq has had three successful elections, adopted a constitution, and installed its first elected government. At the same time, since the initial ground offensive ended in 2003, the costs to secure and stabilize Iraq have grown substantially, as has the level of violence that afflicts Iraqi society. Such violence stems from an insurgency that has grown more complex and lethal over the past 3 and 1/2 years and the Sunni-Shi'a conflict, which escalated dramatically in 2006. This instability complicates meaningful political reconciliation among Iraq's religious and tribal groups, reduces the effectiveness of U.S. and Iraqi reconstruction and capacity-building efforts, and diminishes the hopes and expectations of an Iraqi people without adequate jobs, water, fuel, and …
Date:
January 9, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Information Security: Continued Efforts Needed to Address Significant Weaknesses at IRS
A letter report issued by the Government Accountability Office with an abstract that begins "The Internal Revenue Service (IRS) relies extensively on computerized systems to carry out its demanding responsibilities to collect taxes (about $2.7 trillion in fiscal years 2008 and 2007), process tax returns, and enforce the nation's tax laws. Effective information security controls are essential to protect financial and taxpayer information from inadvertent or deliberate misuse, improper disclosure, or destruction. As part of its audits of IRS's fiscal years 2008 and 2007 financial statements, GAO assessed (1) the status of IRS's actions to correct previously reported weaknesses and (2) whether controls were effective in ensuring the confidentiality, integrity, and availability of financial and sensitive taxpayer information. To do this, GAO examined IRS information security policies and procedures and other documents; tested controls over key financial applications; and interviewed key agency officials."
Date:
January 9, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Aviation Security: TSA's Cost and Performance Study of Private-Sector Airport Screening
Correspondence issued by the Government Accountability Office with an abstract that begins "This report formally responds to Congress' request that GAO review the Transportation Security Administration's (TSA) Screening Partnership Program (SPP). In accordance with the Aviation and Transportation Security Act, TSA created the SPP to allow commercial airports an opportunity to apply to TSA to use private sector screeners through qualified private-screening contractors approved by TSA. In February 2008, TSA issued a report on its study comparing the cost and performance of screening services at SPP and non-SPP airports. Our briefing addresses the following questions: (1) To what extent did the design of TSA's study of the cost and performance of passenger and checked baggage screening services at selected SPP and non-SPP airports affect the usefulness of the study? (2) To what extent has TSA taken actions to identify and eliminate any unnecessary overhead/supervisory redundancies at SPP airports between TSA and contractor personnel? (3) What factors do airport operators cite as having contributed to airports' decisions about whether to participate in the SPP? We are recommending that if TSA plans to rely on its comparison of costs and performance of SPP and non-SPP airports for future decision making, the agency …
Date:
January 9, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Posthearing Questions Related to Federal Agencies' Activities regarding the Uniformed Services Employment and Reemployment Rights Act
Correspondence issued by the Government Accountability Office with an abstract that begins "On November 8, 2007, GAO testified before the committee at a hearing entitled "Protecting the Employment Rights of Those Who Protect the United States." This letter responds to the Congressional request that I provide answers to questions for the record. The questions are as follows: (1) Why are the Uniformed Services Employment and Reemployment Rights Act (USERRA) claims taking so long to resolve at The Department of Defense (DOD), the Department of Labor (DOL) and the Office of the Special Council (OSC)? (2) What can each of the agencies do to make this process more efficient and effective for veterans? (3) Is the system as it stands today, ready and able to handle a possible increase in USERRA claims? (4) How can the agencies work proactively to prevent the need for USERRA claims in the future? And (5) Will this new initiative fully address the data concerns GAO raised so that Congress has a more complete picture of the types of USERRA claims being filed?"
Date:
January 9, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Title III, Older Americans Act: Carryover Funds Are Not Creating a Serious Meal Service Problem Nationwide
A letter report issued by the General Accounting Office with an abstract that begins "Under Title III of the Older Americans Act, the Administration on Aging (AoA) distributes grants to states on the basis of their proportional share of the total elderly population in the United States. These grants are then disbursed to more than 600 area agencies nationwide, and are used to fund group and in-home meals, as well as support services, including transportation and housekeeping. The grants are further subdivided by these agencies to more than 4,000 local service providers. AoA requires that states obligate these funds by September 30 of the fiscal year in which they are awarded. Also, states must spend this money within two years after the fiscal year in which it is awarded. During this time AoA does not limit or monitor the amount of unspent funds that states may carry over to the succeeding fiscal year. GAO examined whether states were using Title III carryover funds to expand their meal service programs for the elderly beyond a level sustainable by their annual allotments alone. GAO found that the buildup and use of Title III carryover funds to support elderly nutrition services does not …
Date:
January 9, 2001
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Commuter Rail: Information and Guidance Could Help Facilitate Commuter and Freight Rail Access Negotiations
A letter report issued by the General Accounting Office with an abstract that begins "Commuter and freight rail services have the potential to play increasingly important roles in the nation's economy and transportation system as demand for these services increases. Because the cost of building new infrastructure can be costprohibitive, commuter rail agencies typically seek to use existing infrastructure--which is primarily owned by private freight railroads. Consequently, commuter rail agencies must negotiate to purchase, lease, or pay to access the existing infrastructure from freight railroads. GAO was asked to examine (1) the challenges commuter rail agencies and freight railroads face when negotiating and sharing rights-of-way, (2) the actions that help facilitate mutually beneficial arrangements between commuter rail agencies and freight railroads, and (3) the role the federal government plays in negotiations between commuter rail agencies and freight railroads."
Date:
January 9, 2004
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Mineral Revenues: A More Systematic Evaluation of the Royalty-in-Kind Pilots Is Needed
A letter report issued by the General Accounting Office with an abstract that begins "In fiscal year 2001, the federal government collected $7.5 billion in royalties from the sale of oil and gas produced on federal lands. Although most oil and gas companies pay royalties in cash, the Department of the Interior's Minerals Management Service (MMS) has the option to take a percentage of the oil and gas produced and either transfer this percentage to other federal agencies or to sell this percentage itself--known as "taking royalties in kind." GAO reviewed the extent to which MMS has taken royalties in kind since 1995, the reasons for taking royalties in kind, and MMS's progress in implementing management control over its Royalty-in-Kind Program."
Date:
January 9, 2003
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Audits of Public Companies: Continued Concentration in Audit Market for Large Public Companies Does Not Call for Immediate Action
A letter report issued by the Government Accountability Office with an abstract that begins "GAO has prepared this report under the Comptroller General's authority as part of a continued effort to assist Congress in reviewing concentration in the market for public company audits. The small number of large international accounting firms performing audits of almost all large public companies raises interest in potential effects on competition and the choices available to large companies needing an auditor. This report examines (1) concentration in the market for public company audits, (2) the potential for smaller accounting firms' growth to ease market concentration, and (3) proposals that have been offered by others for easing concentration and the barriers facing smaller firms in expanding their market shares. GAO surveyed a random sample of almost 600 large, medium, and small public companies on their experiences with their auditors. GAO also interviewed the four largest accounting firms and surveyed all other U.S. accounting firms that audit at least one public company. GAO also developed an econometric model that analyzed the extent to which various factors, including concentration and new auditing requirements, affected fee levels. To supplement this work, GAO interviewed market participants, including public companies, investors, …
Date:
January 9, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Theory and Fluid Simulations of Boundary Plasma Fluctuations
Theoretical and computational investigations are presented of boundary plasma microturbulence that take into account important effects of the geometry of diverted tokamaks--in particular, the effect of x-point magnetic shear and the termination of field lines on divertor plates. We first generalize our previous 'heuristic boundary condition' which describes, in a lumped model, the closure of currents in the vicinity of the x-point region to encompass three current-closure mechanisms. We then use this boundary condition to derive the dispersion relation for low-beta flute-like modes in the divertor-leg region under the combined drives of curvature, sheath impedance, and divertor tilt effects. The results indicate the possibility of strongly growing instabilities, driven by sheath boundary conditions, and localized in either the private or common flux region of the divertor leg depending on the radial tilt of divertor plates. We re-visit the issue of x-point effects on blobs, examining the transition from blobs terminated by x-point shear to blobs that extend over both the main SOL and divertor legs. We find that, for a main-SOL blob, this transition occurs without a free-acceleration period as previously thought, with x-point termination conditions applying until the blob has expanded to reach the divertor plate. We also derive …
Date:
January 9, 2007
Creator:
Cohen, R. H.; LaBombard, B.; LoDestro, L. L.; Rognlien, T. D.; Ryutov, D. D.; Terry, J. L. et al.
Object Type:
Article
System:
The UNT Digital Library
Light-Front Holography and QCD Hadronization at the Amplitude Level
Light-front holography allows hadronic amplitudes in the AdS/QCD fifth dimension to be mapped to frame-independent light-front wavefunctions of hadrons in physical space-time, thus providing a relativistic description of hadrons at the amplitude level. The AdS coordinate z is identified with an invariant light-front coordinate {zeta} which separates the dynamics of quark and gluon binding from the kinematics of constituent spin and internal orbital angular momentum. The result is a single-variable light-front Schroedinger equation for QCD which determines the eigenspectrum and the light-front wavefunctions of hadrons for general spin and orbital angular momentum. A new method for computing the hadronization of quark and gluon jets at the amplitude level using AdS/QCD light-front wavefunctions is outlined.
Date:
January 9, 2009
Creator:
Brodsky, Stanley J. & de Teramond, Guy F.
Object Type:
Article
System:
The UNT Digital Library
Silver ion mediated shape control of platinum nanoparticles: Removal of silver by selective etching leads to increased catalytic activity
A procedure has been developed for the selective etching of Ag from Pt nanoparticles of well-defined shape, resulting in the formation of elementally-pure Pt cubes, cuboctahedra, or octahedra, with a largest vertex-to-vertex distance of {approx}9.5 nm from Ag-modified Pt nanoparticles. A nitric acid etching process was applied Pt nanoparticles supported on mesoporous silica, as well as nanoparticles dispersed in aqueous solution. The characterization of the silica-supported particles by XRD, TEM, and N{sub 2} adsorption measurements demonstrated that the structure of the nanoparticles and the mesoporous support remained conserved during etching in concentrated nitric acid. Both elemental analysis and ethylene hydrogenation indicated etching of Ag is only effective when [HNO{sub 3}] {ge} 7 M; below this concentration, the removal of Ag is only {approx}10%. Ethylene hydrogenation activity increased by four orders of magnitude after the etching of Pt octahedra that contained the highest fraction of silver. High-resolution transmission electron microscopy of the unsupported particles after etching demonstrated that etching does not alter the surface structure of the Pt nanoparticles. High [HNO{sub 3}] led to the decomposition of the capping agent, polyvinylpyrollidone (PVP); infrared spectroscopy confirmed that many decomposition products were present on the surface during etching, including carbon monoxide.
Date:
January 9, 2008
Creator:
Grass, Michael E.; Yue, Yao; Habas, Susan E.; Rioux, Robert M.; Teall, Chelsea I. & Somorjai, G.A.
Object Type:
Article
System:
The UNT Digital Library
Dynamic versus Static Hadronic Structure Functions
'Static' structure functions are the probabilistic distributions computed from the square of the light-front wavefunctions of the target hadron. In contrast, the 'dynamic' structure functions measured in deep inelastic lepton-hadron scattering include the effects of rescattering associated with the Wilson line. Initial- and final-state rescattering, neglected in the parton model, can have a profound effect in QCD hard-scattering reactions, producing single-spin asymmetries, diffractive deep inelastic scattering, diffractive hard hadronic reactions, the breakdown of the Lam-Tung relation in Drell-Yan reactions, nuclear shadowing, and non-universal nuclear antishadowing|novel leading-twist physics not incorporated in the light-front wavefunctions of the target computed in isolation. I also review how 'direct' higher-twist processes--where a proton is produced in the hard subprocess itself--can explain the anomalous proton-to-pion ratio seen in high centrality heavy ion collisions.
Date:
January 9, 2009
Creator:
Brodsky, Stanley J.
Object Type:
Article
System:
The UNT Digital Library
Gryrokinetic Simulations of ETG and ITG Turbulence
None
Date:
January 9, 2007
Creator:
Dimits, A. M.; Nevins, W. M.; Shumaker, D. E.; Hammett, G. W.; Dannert, T.; Jenko, F. et al.
Object Type:
Article
System:
The UNT Digital Library
EFFECTIVE DOSIMETRIC HALF LIFE OF CESIUM 137 SOIL CONTAMINATION
In the early 1960s, an area of privately-owned swamp adjacent to the US Department of Energy's Savannah River Site (SRS), known as Creek Plantation, was contaminated by site operations. Studies conducted in 1974 estimated that approximately 925 GBq of {sup 137}Cs was deposited in the swamp. Subsequently, a series of surveys--composed of 52 monitoring locations--was initiated to characterize and trend the contaminated environment. The annual, potential, maximum doses to a hypothetical hunter were estimated by conservatively using the maximum {sup 137}Cs concentrations measured in the soil. The purpose of this report is to calculate an 'effective dosimetric' half-life for {sup 137}Cs in soil (based on the maximum concentrations) and compare it to the effective environmental half-life (based on the geometric mean concentrations).
Date:
January 9, 2008
Creator:
Jannik, T; P Fledderman, P & Michael Paller, M
Object Type:
Article
System:
The UNT Digital Library
Characterization of a mixed salt of 1-hydroxy-pyridin-2-one Pu(IV)complexes
Most expert analyses of the projected world energy needs show utilization of nuclear energy will be essential for the next few decades, and hence the need to support this technology grows. But as one measure of the supporting science base of this field, as of December 2006, only 25 Pu containing structures were in the Cambridge Structural Database, as compared to 21,807 for Fe. A comparison of the rate of addition to this knowledge base reveals that approximately 500 Fe structures are registered with the Cambridge Structural Database every year, while in the same period only two or three Pu crystal structures are published. A continuing objective of this laboratory has been the development of new sequestering agents for actinide decorporation and selective extractions. This effort has been based on similarities in the properties of Pu(IV) and Fe(III), and the chelating groups in microbial Fe(III) sequestering agents, siderophores. The HOPO ligands (Figure 1) are one such class of chelating group which have been investigated as selective actinide extractants.
Date:
January 9, 2007
Creator:
Gorden, Anne E.V.; Xu, Jide; Szigethy, Geza; Oliver, Allen; Shuh,David K. & Raymond, Kenneth N.
Object Type:
Article
System:
The UNT Digital Library
Hydrocarbon-free resonance transition 795-nm rubidium laser
An optical resonance transition rubidium laser (5{sup 2}P{sub 1/2} {yields} 5{sup 2}S{sub 1/2}) is demonstrated with a hydrocarbon-free buffer gas. Prior demonstrations of alkali resonance transition lasers have used ethane as either the buffer gas or a buffer gas component to promote rapid fine-structure mixing. However, our experience suggests that the alkali vapor reacts with the ethane producing carbon as one of the reaction products. This degrades long term laser reliability. Our recent experimental results with a 'clean' helium-only buffer gas system pumped by a Ti:sapphire laser demonstrate all the advantages of the original alkali laser system, but without the reliability issues associated with the use of ethane.
Date:
January 9, 2008
Creator:
Wu, S Q; Soules, T F; Page, R H; Mitchell, S C; Kanz, V K & Beach, R J
Object Type:
Article
System:
The UNT Digital Library
Complete chloroplast genome of Trachelium caeruleum: extensiverearrangements are associated with repeats and tRNAs
Chloroplast genome structure, gene order and content arehighly conserved in land plants. We sequenced the complete chloroplastgenome sequence of Trachelium caeruleum (Campanulaceae) a member of anangiosperm family known for highly rearranged chloroplast genomes. Thetotal genome size is 162,321 bp with an IR of 27,273 bp, LSC of 100,113bp and SSC of 7,661 bp. The genome encodes 115 unique genes, with 19duplicated in the IR, a tRNA (trnI-CAU) duplicated once in the LSC and aprotein coding gene (psbJ) duplicated twice, for a total of 137 genes.Four genes (ycf15, rpl23, infA and accD) are truncated and likelynonfunctional; three others (clpP, ycf1 and ycf2) are so highly divergedthat they may now be pseudogenes. The most conspicuous feature of theTrachelium genome is the presence of eighteen internally unrearrangedblocks of genes that have been inverted or relocated within the genome,relative to the typical gene order of most angiosperm chloroplastgenomes. Recombination between repeats or tRNAs has been suggested as twomeans of chloroplast genome rearrangements. We compared the relativenumber of repeats in Trachelium to eight other angiosperm chloroplastgenomes, and evaluated the location of repeats and tRNAs in relation torearrangements. Trachelium has the highest number and largest repeats,which are concentrated near inversion endpoints or other rearrangements.tRNAs occur at …
Date:
January 9, 2006
Creator:
Haberle, Rosemarie C.; Fourcade, Matthew L.; Boore, Jeffrey L. & Jansen, Robert K.
Object Type:
Article
System:
The UNT Digital Library
Logarithmically enhanced corrections to the decayrate and forward backward asymmetry in \bar B to \ell^+ \ell^-
We study logarithmically enhanced electromagnetic corrections to the decay rate in the high dilepton invariant mass region as well as corrections to the forward backward asymmetry (FBA) of the inclusive rare decay {bar B} {yields} X{sub s}{ell}{sup +}{ell}{sup -}. As expected, the relative effect of these corrections in the high dilepton mass region is around -8% for the muonic final state and therefore much larger than in the low dilepton mass region. We also present a complete phenomenological analysis, to improved NNLO accuracy, of the dilepton mass spectrum and the FBA integrated in the low dilepton mass region, including a new approach to the zero of the FBA. The latter represents one of the most precise predictions in flavor physics with a theoretical uncertainty of order 5%. We find (q{sub 0}{sup 2}){mu}{mu} = (3.50 {+-} 0.12)GeV{sup 2}. For the high dilepton invariant mass region, we have {Beta}({bar B} {yields} X{sub s}{mu}{mu}){sub high} = (2.40{sub -0.62}{sup +0.69}) x 10{sup -7}. The dominant uncertainty is due to the 1/m{sub b} corrections and can be significantly reduced in the future. For the low dilepton invariant mass region, we confirm previous results up to small corrections.
Date:
January 9, 2008
Creator:
Huber, Tobias; Hurth, Tobias & Lunghi, Enrico
Object Type:
Article
System:
The UNT Digital Library
Experimental and Kinetic Modeling Study of Extinction and Ignition of Methyl Decanoate in Laminar Nonpremixed Flows
Methyl decanoate is a large methyl ester that can be used as a surrogate for biodiesel. In this experimental and computational study, the combustion of methyl decanoate is investigated in nonpremixed, nonuniform flows. Experiments are performed employing the counterflow configuration with a fuel stream made up of vaporized methyl decanoate and nitrogen, and an oxidizer stream of air. The mass fraction of fuel in the fuel stream is measured as a function of the strain rate at extinction, and critical conditions of ignition are measured in terms of the temperature of the oxidizer stream as a function of the strain rate. It is not possible to use a fully detailed mechanism for methyl decanoate to simulate the counterflow flames because the number of species and reactions is too large to employ with current flame codes and computer resources. Therefore a skeletal mechanism was deduced from a detailed mechanism of 8555 elementary reactions and 3036 species using 'directed relation graph' method. This skeletal mechanism has only 713 elementary reactions and 125 species. Critical conditions of ignition were calculated using this skeletal mechanism and are found to agree well with experimental data. The predicted strain rate at extinction is found to be …
Date:
January 9, 2008
Creator:
Seshadri, K; Lu, T; Herbinet, O; Humer, S; Niemann, U; Pitz, W J et al.
Object Type:
Article
System:
The UNT Digital Library
Final Technical Report for Industrial Assessment Center at West Virginia University
The Industrial Assessment Center (IAC) program at West Virginia University (WVU), which is funded by the Industrial Technologies Program (ITP) in the U.S. Department of Energy’s (DOE) Office of Energy Efficiency and Renewable Energy (EERE), has provided a unique opportunity to enhance efficient energy utilization in small to medium-sized manufacturers. It has also provided training to engineering students in the identification and analysis of efficient energy use in each aspect of the manufacturing process and associated supporting elements. The outcomes of the IAC Program at WVU have assisted the manufacturers and the students in having a heightened sensitivity to industrial energy conservation, waste reduction, and productivity improvement, as well as a better understanding of the technical aspects of manufacturing processes and the supporting elements through which efficient energy utilization can be enhanced. The IAC at WVU has conducted 101 energy assessments from 2002 until 2006. The focus of the industrial assessments has been on energy savings. It has been the IAC’s interest to strongly focus on energy savings and on waste minimization and productivity improvements that strictly have an impact on energy. The IAC at WVU was selected as the Center of the year in 2005 from amongst 26 centers …
Date:
January 9, 2008
Creator:
Gopalakrishnan, Bhaskaran
Object Type:
Report
System:
The UNT Digital Library
CEMENTITIOUS BARRIERS MODELING FOR PERFORMANCE ASSESSMENTS OF SHALLOW LAND BURIAL OF LOW LEVEL RADIOACTIVE WASTE - 9243
The Cementitious Barriers Partnership (CBP) was created to develop predictive capabilities for the aging of cementitious barriers over long timeframes. The CBP is a multi-agency, multi-national consortium working under a U.S. Department of Energy (DOE) Environmental Management (EM-21) funded Cooperative Research and Development Agreement (CRADA) with the Savannah River National Laboratory (SRNL) as the lead laboratory. Members of the CBP are SRNL, Vanderbilt University, the U.S. Nuclear Regulatory Commission (USNRC), National Institute of Standards and Technology (NIST), SIMCO Technologies, Inc. (Canada), and the Energy Research Centre of the Netherlands (ECN). A first step in developing advanced tools is to determine the current state-of-the-art. A review has been undertaken to assess the treatment of cementitious barriers in Performance Assessments (PA). Representatives of US DOE sites which have PAs for their low level waste disposal facilities were contacted. These sites are the Idaho National Laboratory, Oak Ridge National Laboratory, Los Alamos National Laboratory, Nevada Test Site, and Hanford. Several of the more arid sites did not employ cementitious barriers. Of those sites which do employ cementitious barriers, a wide range of treatment of the barriers in a PA was present. Some sites used conservative, simplistic models that even though conservative still showed …
Date:
January 9, 2009
Creator:
Taylor, G
Object Type:
Article
System:
The UNT Digital Library