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2008 Photoions, Photoionization & Photodetachment Gordon Research Conference January 27-February 1, 2008 (open access)

2008 Photoions, Photoionization & Photodetachment Gordon Research Conference January 27-February 1, 2008

This conference brings together scientists interested in a range of basic phenomena linked to the ejection and scattering of electrons from atoms, molecules, clusters, liquids and solids by absorption of light. Photoionization, a highly sensitive probe of both structure and dynamics, can range from perturbative single-photon processes to strong-field highly non-perturbative interactions. It is responsible for the formation and destruction of molecules in astrophysical and plasma environments and successfully used in advanced analytical techniques. Positive ions, which can be produced and studied most effectively using photoionization, are the major components of all plasmas, vital constituents of flames and important intermediates in many chemical reactions. Negative ions are significant as transient species and, when photodetached, the corresponding neutral species often undergoes remarkable, otherwise non-observable, dynamics. The scope of the meeting spans from novel observations in atomic and molecular physics, such as Coulomb Crystals, highly excited states and cold Rydberg plasmas, to novel energy resolved or ultrafast time-resolved experiments, photoionization in strong laser fields, theoretical method development for electron scattering, photoionization and photodetachment and more complex phenomena such as charge transfer and DNA and protein conductivity, important for biological and analytical applications.
Date: March 31, 2009
Creator: GRay, Klaus Muller-Dethefs Nancy Ryan
Object Type: Article
System: The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 111, No. 189, Ed. 1 Tuesday, March 31, 2009 (open access)

The Altus Times (Altus, Okla.), Vol. 111, No. 189, Ed. 1 Tuesday, March 31, 2009

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: March 31, 2009
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History
Analysis of Radioactive Releases During Proposed Demolition Activities for the 224-U and 224-UA Buildings (open access)

Analysis of Radioactive Releases During Proposed Demolition Activities for the 224-U and 224-UA Buildings

Atmospheric dispersion modeling has been conducted in support of the demolition of the 224-U and 224-UA buildings using estimated release rates to provide information on the location and levels of radioactive contamination that may be expected. The facilities surrounding the UO3 plant have the potential to affect dispersion patterns through various meteorological phenomena, including building wake effects. Hourly meteorological data collected over a 5-year period were used to examine the effects of wind speed, direction, and stability on projected concentrations of contaminants in air and deposited on nearby surfaces. The modeling results indicate that the radiological exposures from the planned demolition efforts will be below the designated limits for air and soil exposures.
Date: March 31, 2009
Creator: Napier, Bruce A.; Rishel, Jeremy P. & Droppo, James G.
Object Type: Report
System: The UNT Digital Library
Base Realignment and Closure (BRAC): Transfer and Disposal of Military Property (open access)

Base Realignment and Closure (BRAC): Transfer and Disposal of Military Property

This report provides an overview of the various authorities available under the current law and describes the planning process for the redevelopment of base realignment and closure (BRAC) properties.
Date: March 31, 2009
Creator: Mason, R. Chuck
Object Type: Report
System: The UNT Digital Library
Base Research Program (open access)

Base Research Program

In June 2009, the Energy & Environmental Research Center (EERC) completed 11 years of research under the U.S. Department of Energy (DOE) Base Cooperative Agreement No. DE-FC26-98FT40320 funded through the Office of Fossil Energy (OFE) and administered at the National Energy Technology Laboratory (NETL). A wide range of diverse research activities were performed under annual program plans approved by NETL in seven major task areas: (1) resource characterization and waste management, (2) air quality assessment and control, (3) advanced power systems, (4) advanced fuel forms, (5) value-added coproducts, (6) advanced materials, and (7) strategic studies. This report summarizes results of the 67 research subtasks and an additional 50 strategic studies. Selected highlights in the executive summary illustrate the contribution of the research to the energy industry in areas not adequately addressed by the private sector alone. During the period of performance of the agreement, concerns have mounted over the impact of carbon emissions on climate change, and new programs have been initiated by DOE to ensure that fossil fuel resources along with renewable resources can continue to supply the nation's transportation fuel and electric power. The agreement has addressed DOE goals for reductions in CO{sub 2} emissions through efficiency, capture, …
Date: March 31, 2009
Creator: Sondreal, Everett & Hendrikson, John
Object Type: Report
System: The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 89, No. 88, Ed. 1 Tuesday, March 31, 2009 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 89, No. 88, Ed. 1 Tuesday, March 31, 2009

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: March 31, 2009
Creator: Clements, Clifford E.
Object Type: Newspaper
System: The Portal to Texas History
Biochemistry and genetics of autotrophy in Methanococcus (open access)

Biochemistry and genetics of autotrophy in Methanococcus

The project investigated fundamental aspects of carbon metabolism and genetics in the methane-producing archaeon Methanococcus maripaludis. The project yielded 23 peer-reviewed publications and five reviews from 1997-2007. PDFs of the peer-reviewed publications are included in the next section. Some papers of special interest are listed below. The pathway of pyruvate biosynthesis was elucidated by a combination of biochemical and physiological studies. This work characterized the very oxygen sensitive pyruvate oxidoreductase and showed that the enzyme was irreversible under physiological conditions. Evidence for the flow of electrons from the energy coupling hydrogenase b (Ehb) was presented. These results were published in the following papers. Yang, Y.L., J.N. Gluska, and W.B. Whitman (2002) Intracellular pyruvate flux in the methane-producing archaeon Methanococcus maripaludis. Arch. Microbiol. 178: 493-498. Lin, W.C., Y.L. Yang, and W.B. Whitman (2003) The anabolic pyruvate oxidoreductase from Methanococcus maripaludis. Arch. Microbiol. 179: 444-456. Lin, W., and W.B. Whitman (2004) The importance of porE and porF in the anabolic pyruvate oxidoreductase of Methanococcus maripaludis. Arch. Microbiol. 181: 68-73. Porat, I., W. Kim, E.L. Hendrickson, Q. Xia, Y. Zhang, T. Wang, F. Taub, B.C. Moore, I.J. Anderson, M. Hackett, J.A. Leigh, and W.B. Whitman (2006) Disruption of the Ehb hydrogenase operon limits …
Date: March 31, 2009
Creator: Whitman, William B.
Object Type: Report
System: The UNT Digital Library
The Boerne Star (Boerne, Tex.), Vol. 103, No. 26, Ed. 1 Tuesday, March 31, 2009 (open access)

The Boerne Star (Boerne, Tex.), Vol. 103, No. 26, Ed. 1 Tuesday, March 31, 2009

Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date: March 31, 2009
Creator: Cartwright, Brian & Velvin, Candace E.
Object Type: Newspaper
System: The Portal to Texas History
The Brand (Abilene, Tex.), Vol. 97, No. 12, Ed. 1 Tuesday, March 31, 2009 (open access)

The Brand (Abilene, Tex.), Vol. 97, No. 12, Ed. 1 Tuesday, March 31, 2009

Bi-weekly student newspaper from Hardin-Simmons University in Abilene, Texas that includes campus news and local news of interest to students along with advertising.
Date: March 31, 2009
Creator: Koe, Crystal
Object Type: Newspaper
System: The Portal to Texas History
Cast Metals Coalition Technology Transfer and Program Management Final Report (open access)

Cast Metals Coalition Technology Transfer and Program Management Final Report

The Cast Metals Coalition (CMC) partnership program was funded to ensure that the results of the Department of Energy's (DOE) metalcasting research and development (R&D) projects are successfully deployed into industry. Specifically, the CMC program coordinated the transfer and deployment of energy saving technologies and process improvements developed under separately funded DOE programs and projects into industry. The transition of these technologies and process improvements is a critical step in the path to realizing actual energy savings. At full deployment, DOE funded metalcasting R&D results are projected to save 55% of the energy used by the industry in 1998. This closely aligns with DOE's current goal of driving a 25% reduction in industrial energy intensity by 2017. In addition to benefiting DOE, these energy savings provide metalcasters with a significant economic advantage. Deployment of already completed R&D project results and those still underway is estimated to return over 500% of the original DOE and industry investment. Energy savings estimates through December 2008 from the Energy-Saving Melting and Revert Reduction Technology (E-SMARRT) portfolio of projects alone are 12 x 1012 BTUs, with a projection of over 50 x 1012 BTUs ten years after program completion. These energy savings and process improvements …
Date: March 31, 2009
Creator: Gwyn, Mike
Object Type: Report
System: The UNT Digital Library
Caustic Recycle from Hanford Tank Waste Using Large Area NaSICON Structures (LANS) (open access)

Caustic Recycle from Hanford Tank Waste Using Large Area NaSICON Structures (LANS)

This report presents the results of a 5-day test of an electrochemical bench-scale apparatus using a proprietary (NAS-GY) material formulation of a (Na) Super Ion Conductor (NaSICON) membrane in a Large Area NaSICON Structures (LANS) configuration. The primary objectives of this work were to assess system performance, membrane seal integrity, and material degradation while removing Na from Group 5 and 6 tank waste from the Hanford Site.
Date: March 31, 2009
Creator: Fountain, Matthew S.; Sevigny, Gary J.; Balagopal, S. & Bhavaraju, S.
Object Type: Report
System: The UNT Digital Library
Chemical Looping Combustion Kinetics (open access)

Chemical Looping Combustion Kinetics

One of the most promising methods of capturing CO{sub 2} emitted by coal-fired power plants for subsequent sequestration is chemical looping combustion (CLC). A powdered metal oxide such as NiO transfers oxygen directly to a fuel in a fuel reactor at high temperatures with no air present. Heat, water, and CO{sub 2} are released, and after H{sub 2}O condensation the CO{sub 2} (undiluted by N{sub 2}) is ready for sequestration, whereas the nickel metal is ready for reoxidation in the air reactor. In principle, these processes can be repeated endlessly with the original nickel metal/nickel oxide participating in a loop that admits fuel and rejects ash, heat, and water. Our project accumulated kinetic rate data at high temperatures and elevated pressures for the metal oxide reduction step and for the metal reoxidation step. These data will be used in computational modeling of CLC on the laboratory scale and presumably later on the plant scale. The oxygen carrier on which the research at Utah is focused is CuO/Cu{sub 2}O rather than nickel oxide because the copper system lends itself to use with solid fuels in an alternative to CLC called 'chemical looping with oxygen uncoupling' (CLOU).
Date: March 31, 2009
Creator: Eyring, Edward & Konya, Gabor
Object Type: Text
System: The UNT Digital Library
Clean Coal Program Research Activities (open access)

Clean Coal Program Research Activities

Although remarkable progress has been made in developing technologies for the clean and efficient utilization of coal, the biggest challenge in the utilization of coal is still the protection of the environment. Specifically, electric utilities face increasingly stringent restriction on the emissions of NO{sub x} and SO{sub x}, new mercury emission standards, and mounting pressure for the mitigation of CO{sub 2} emissions, an environmental challenge that is greater than any they have previously faced. The Utah Clean Coal Program addressed issues related to innovations for existing power plants including retrofit technologies for carbon capture and sequestration (CCS) or green field plants with CCS. The Program focused on the following areas: simulation, mercury control, oxycoal combustion, gasification, sequestration, chemical looping combustion, materials investigations and student research experiences. The goal of this program was to begin to integrate the experimental and simulation activities and to partner with NETL researchers to integrate the Program's results with those at NETL, using simulation as the vehicle for integration and innovation. The investigators also committed to training students in coal utilization technology tuned to the environmental constraints that we face in the future; to this end the Program supported approximately 12 graduate students toward the completion …
Date: March 31, 2009
Creator: Baxter, Larry; Eddings, Eric; Fletcher, Thomas; Kelly, Kerry; Lighty, JoAnn; Pugmire, Ronald et al.
Object Type: Report
System: The UNT Digital Library
Continuous Energy, Multi-Dimensional Transport Calculations for Problem Dependent Resonance Self-Shielding (open access)

Continuous Energy, Multi-Dimensional Transport Calculations for Problem Dependent Resonance Self-Shielding

The overall objective of the work here has been to eliminate the approximations used in current resonance treatments by developing continuous energy multi-dimensional transport calculations for problem dependent self-shielding calculations. The work here builds on the existing resonance treatment capabilities in the ORNL SCALE code system.
Date: March 31, 2009
Creator: Downar, T.
Object Type: Report
System: The UNT Digital Library
Corrective Action Plan for Corrective Action Unit 563: Septic Systems, Nevada Test Site, Nevada (open access)

Corrective Action Plan for Corrective Action Unit 563: Septic Systems, Nevada Test Site, Nevada

This Corrective Action Plan (CAP) has been prepared for Corrective Action Unit (CAU) 563, Septic Systems, in accordance with the Federal Facility Agreement and Consent Order. CAU 563 consists of four Corrective Action Sites (CASs) located in Areas 3 and 12 of the Nevada Test Site. CAU 563 consists of the following CASs: #2; CAS 03-04-02, Area 3 Subdock Septic Tank #2; CAS 03-59-05, Area 3 Subdock Cesspool #2; CAS 12-59-01, Drilling/Welding Shop Septic Tanks #2; CAS 12-60-01, Drilling/Welding Shop Outfalls Site characterization activities were performed in 2007, and the results are presented in Appendix A of the CAU 563 Corrective Action Decision Document. The scope of work required to implement the recommended closure alternatives is summarized below. #2; CAS 03-04-02, Area 3 Subdock Septic Tank, contains no contaminants of concern (COCs) above action levels. No further action is required for this site; however, as a best management practice (BMP), all aboveground features (e.g., riser pipes and bumper posts) will be removed, the septic tank will be removed, and all open pipe ends will be sealed with grout. #2; CAS 03-59-05, Area 3 Subdock Cesspool, contains no COCs above action levels. No further action is required for this site; however, …
Date: March 31, 2009
Creator: National Security Technologies, LLC
Object Type: Report
System: The UNT Digital Library
Cuba: U.S. Restrictions on Travel and Remittances (open access)

Cuba: U.S. Restrictions on Travel and Remittances

This report covers the contentious travel restrictions between the U.S. and Cuba from the 1960s to the present time. It includes background on the restrictions, enforcement of restrictions, and arguments for or against maintaining travel restrictions. It also provides background on relevant legislative initiatives during the 106th through the 111th Congresses.
Date: March 31, 2009
Creator: Sullivan, Mark P.
Object Type: Report
System: The UNT Digital Library
Desalination: Status and Federal Issues (open access)

Desalination: Status and Federal Issues

This report is categorized into three categories: (I) Desalination: The Federal Policy Context, (II) Desalination Adoption in the United States and (III) Federal Desalination Research.
Date: March 31, 2009
Creator: Carter, Nicole T.
Object Type: Report
System: The UNT Digital Library
DESTRUCTION OF TETRAPHENYLBORATE IN TANK 48H USING WET AIR OXIDATION BATCH BENCH SCALE AUTOCLAVE TESTING WITH ACTUAL RADIOACTIVE TANK 48H WASTE (open access)

DESTRUCTION OF TETRAPHENYLBORATE IN TANK 48H USING WET AIR OXIDATION BATCH BENCH SCALE AUTOCLAVE TESTING WITH ACTUAL RADIOACTIVE TANK 48H WASTE

Wet Air Oxidation (WAO) is one of the two technologies being considered for the destruction of Tetraphenylborate (TPB) in Tank 48H. Batch bench-scale autoclave testing with radioactive (actual) Tank 48H waste is among the tests required in the WAO Technology Maturation Plan. The goal of the autoclave testing is to validate that the simulant being used for extensive WAO vendor testing adequately represents the Tank 48H waste. The test objective was to demonstrate comparable test results when running simulated waste and real waste under similar test conditions. Specifically: (1) Confirm the TPB destruction efficiency and rate (same reaction times) obtained from comparable simulant tests, (2) Determine the destruction efficiency of other organics including biphenyl, (3) Identify and quantify the reaction byproducts, and (4) Determine off-gas composition. Batch bench-scale stirred autoclave tests were conducted with simulated and actual Tank 48H wastes at SRNL. Experimental conditions were chosen based on continuous-flow pilot-scale simulant testing performed at Siemens Water Technologies Corporation (SWT) in Rothschild, Wisconsin. The following items were demonstrated as a result of this testing. (1) Tetraphenylborate was destroyed to below detection limits during the 1-hour reaction time at 280 C. Destruction efficiency of TPB was > 99.997%. (2) Other organics (TPB …
Date: March 31, 2009
Creator: Adu-Wusu, K & Paul Burket, P
Object Type: Report
System: The UNT Digital Library
Development of Hydrologic Characterization Technology of Fault Zones -- Phase I, 2nd Report (open access)

Development of Hydrologic Characterization Technology of Fault Zones -- Phase I, 2nd Report

This is the year-end report of the 2nd year of the NUMO-LBNL collaborative project: Development of Hydrologic Characterization Technology of Fault Zones under NUMO-DOE/LBNL collaboration agreement, the task description of which can be found in the Appendix 3. Literature survey of published information on the relationship between geologic and hydrologic characteristics of faults was conducted. The survey concluded that it may be possible to classify faults by indicators based on various geometric and geologic attributes that may indirectly relate to the hydrologic property of faults. Analysis of existing information on the Wildcat Fault and its surrounding geology was performed. The Wildcat Fault is thought to be a strike-slip fault with a thrust component that runs along the eastern boundary of the Lawrence Berkeley National Laboratory. It is believed to be part of the Hayward Fault system but is considered inactive. Three trenches were excavated at carefully selected locations mainly based on the information from the past investigative work inside the LBNL property. At least one fault was encountered in all three trenches. Detailed trench mapping was conducted by CRIEPI (Central Research Institute for Electric Power Industries) and LBNL scientists. Some intriguing and puzzling discoveries were made that may contradict with …
Date: March 31, 2009
Creator: Karasaki, Kenzi; Onishi, Tiemi; Black, Bill & Biraud, Sebastien
Object Type: Report
System: The UNT Digital Library
Development of Risk-Based and Technology-Independent Safety Criteria for Generation IV Systems (open access)

Development of Risk-Based and Technology-Independent Safety Criteria for Generation IV Systems

This project has developed quantitative safety goals for Generation IV (Gen IV) nuclear energy systems. These safety goals are risk based and technology independent. The foundations for a new approach to risk analysis has been developed, along with a new operational definition of risk. This project has furthered the current state-of-the-art by developing quantitative safety goals for both Gen IV reactors and for the overall Gen IV nuclear fuel cycle. The risk analysis approach developed will quantify performance measures, characterize uncertainty, and address a more comprehensive view of safety as it relates to the overall system. Appropriate safety criteria are necessary to manage risk in a prudent and cost-effective manner. This study is also important for government agencies responsible for managing, reviewing, and for approving advanced reactor systems because they are charged with assuring the health and safety of the public.
Date: March 31, 2009
Creator: Kastenberg, William E.; Blandford, Edward & Kim, Lance
Object Type: Report
System: The UNT Digital Library
Development of Single Crystal Chemical Vapor Deposition Diamonds for Detector Applications (open access)

Development of Single Crystal Chemical Vapor Deposition Diamonds for Detector Applications

Diamond was studied as a possible radiation hard technology for use in future high radiation environments. With the commissioning of the LHC expected in 2009, and the LHC upgrades expected in 2013, all LHC experiments are planning for detector upgrades which require radiation hard technologies. Chemical Vapor Deposition (CVD) diamond has now been used extensively in beam conditions monitors as the innermost detectors in the highest radiation areas of BaBar, Belle and CDF and is installed in all LHC experiments. As a result, this material is now being discussed as an alternative sensor material for tracking very close to the interaction region of the super-LHC where the most extreme radiation conditions will exist. Our work addressed the further development of the new material, single-crystal Chemical Vapor Deposition diamond, towards reliable industrial production of large pieces and new geometries needed for detector applications.
Date: March 31, 2009
Creator: Kagan, H.; Gan, K. K. & Kass, R.
Object Type: Report
System: The UNT Digital Library
Energy Efficient Community Development in California: Chula Vista Research Project (open access)

Energy Efficient Community Development in California: Chula Vista Research Project

In 2007, the U.S. Department of Energy joined the California Energy Commission in funding a project to begin to examine the technical, economic and institutional (policy and regulatory) aspects of energy-efficient community development. That research project was known as the Chula Vista Research Project for the host California community that co-sponsored the initiative. The researches proved that the strategic integration of the selected and economically viable buildings energy efficiency (EE) measures, photovoltaics (PV), distributed generation (DG), and district cooling can produce significant reductions in aggregate energy consumption, peak demand and emissions, compared to the developer/builder's proposed baseline approach. However, the central power plant emission reductions achieved through use of the EE-DG option would increase local air emissions. The electric and natural gas utility infrastructure impacts associated with the use of the EE and EE-PV options were deemed relatively insignificant while use of the EE-DG option would result in a significant reduction of necessary electric distribution facilities to serve a large-scale development project. The results of the Chula Vista project are detailed in three separate documents: (1) Energy-Efficient Community Development in California; Chula Vista Research Project report contains a detailed description of the research effort and findings. This includes the methodologies, …
Date: March 31, 2009
Creator: Institute of Gas Technology
Object Type: Report
System: The UNT Digital Library

Ensemble: 2009-03-31 – A Night of Percussion

Access: Use of this item is restricted to the UNT Community
Percussion ensembles concert performed at the UNT College of Music Concert Hall.
Date: March 31, 2009
Creator: University of North Texas. 11:00 Percussion Ensemble.
Object Type: Sound
System: The UNT Digital Library
Exact Lattice Supersymmetry (open access)

Exact Lattice Supersymmetry

We provide an introduction to recent lattice formulations of supersymmetric theories which are invariant under one or more real supersymmetries at nonzero lattice spacing. These include the especially interesting case of N = 4 SYM in four dimensions. We discuss approaches based both on twisted supersymmetry and orbifold-deconstruction techniques and show their equivalence in the case of gauge theories. The presence of an exact supersymmetry reduces and in some cases eliminates the need for fine tuning to achieve a continuum limit invariant under the full supersymmetry of the target theory. We discuss open problems.
Date: March 31, 2009
Creator: Catterall, Simon; Kaplan, David B. & Unsal, Mithat
Object Type: Article
System: The UNT Digital Library