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433 Matching Results
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The European Union: Current Challenges and Future Prospects
This report provides a brief history of the European Union (EU) and the major challenges currently confronting the EU as an institution. It also discusses the potential implications both for the EU itself and for U.S.-EU relations.
Date:
February 15, 2016
Creator:
Archick, Kristin
Object Type:
Report
System:
The UNT Digital Library
Brownwood Bulletin (Brownwood, Tex.), Vol. 113, No. 105, Ed. 1 Friday, February 15, 2013
Weekly newspaper from Brownwood, Texas that includes local, state and national news along with advertising.
Date:
February 15, 2013
Creator:
Stuckly, Derrick
Object Type:
Newspaper
System:
The Portal to Texas History
Brownwood Bulletin (Brownwood, Tex.), Vol. 114, No. 106, Ed. 1 Saturday, February 15, 2014
Weekly newspaper from Brownwood, Texas that includes local, state and national news along with advertising.
Date:
February 15, 2014
Creator:
Hanrahan, Thom
Object Type:
Newspaper
System:
The Portal to Texas History
Thermal dissociation behavior and dissociation enthalpies of methane-carbon dioxide mixed hydrates
Replacement of methane with carbon dioxide in hydrate has been proposed as a strategy for geologic sequestration of carbon dioxide (CO{sub 2}) and/or production of methane (CH{sub 4}) from natural hydrate deposits. This replacement strategy requires a better understanding of the thermodynamic characteristics of binary mixtures of CH{sub 4} and CO{sub 2} hydrate (CH{sub 4}-CO{sub 2} mixed hydrates), as well as thermophysical property changes during gas exchange. This study explores the thermal dissociation behavior and dissociation enthalpies of CH{sub 4}-CO{sub 2} mixed hydrates. We prepared CH{sub 4}-CO{sub 2} mixed hydrate samples from two different, well-defined gas mixtures. During thermal dissociation of a CH{sub 4}-CO{sub 2} mixed hydrate sample, gas samples from the head space were periodically collected and analyzed using gas chromatography. The changes in CH{sub 4}-CO{sub 2} compositions in both the vapor phase and hydrate phase during dissociation were estimated based on the gas chromatography measurements. It was found that the CO{sub 2} concentration in the vapor phase became richer during dissociation because the initial hydrate composition contained relatively more CO{sub 2} than the vapor phase. The composition change in the vapor phase during hydrate dissociation affected the dissociation pressure and temperature; the richer CO{sub 2} in the vapor …
Date:
February 15, 2011
Creator:
Kwon, T.H.; Kneafsey, T.J. & Rees, E.V.L.
Object Type:
Article
System:
The UNT Digital Library
SLAC Cosmic Ray Telescope Facility
SLAC does not have a test beam for the HEP detector development at present. We have therefore created a cosmic ray telescope (CRT) facility, which is presently being used to test the FDIRC prototype. We have used it in the past to debug this prototype with the original SLAC electronics before going to the ESA test beam. Presently, it is used to test a new waveform digitizing electronics developed by the University of Hawaii, and we are also planning to incorporate the new Orsay TDC/ADC electronics. As a next step, we plan to put in a full size DIRC bar box with a new focusing optics, and test it together with a final SuberB electronics. The CRT is located in building 121 at SLAC. We anticipate more users to join in the future. This purpose of this note is to provide an introductory manual for newcomers.
Date:
February 15, 2010
Creator:
Va'vra, J.
Object Type:
Report
System:
The UNT Digital Library
Evaluating Unsupervised Ensembles when applied to Word Sense Induction
None
Date:
February 15, 2012
Creator:
Stevens, K D
Object Type:
Article
System:
The UNT Digital Library
Membrane Dehumidifier
Advanced Research Projects Agency-Energy project sheet summarizing general information about the Building Energy Efficiency Through Innovative Thermodevices (BEETIT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses air conditioning with more energy efficient dehumidifying as part of the "High-Efficiency, On-Line Membrane Air Dehumidifier Enabling Sensible Cooling for Warm and Humid Climates" project.
Date:
February 15, 2012
Creator:
ADMA Products
Object Type:
Text
System:
The UNT Digital Library
Bounds and self-consistent estimates for elastic constants of polycrystals of hcp solid He{sup 4}
Recent advances in methods for computing both Hashin-Shtrikman bounds and related selfconsistent (or CPA) estimates of elastic constants for polycrystals composed of randomly oriented crystals can be applied successfully to hexagonal close packed solid He{sup 4}. In particular, since the shear modulus C{sub 44} of hexagonal close-packed solid He is known to undergo large temperature variations when 20 mK {<=}#20; T {<=}#20; 200 mK, bounds and estimates computed with this class of effective medium methods, while using C{sub 44} {r_arrow} 0 as a proxy for melting, are found to be both qualitatively and quantitatively very similar to prior results obtained using Monte Carlo methods. Hashin- Shtrikman bounds provide significantly tighter constraints on the polycrystal behavior than do the traditional Voigt and Reuss bounds.
Date:
February 15, 2012
Creator:
Berryman, J. G.
Object Type:
Article
System:
The UNT Digital Library
Electrostatically Self-assembled Amphiplexes
This research will focus on characterizing the phase behavior of polyelectrolyte-surfactant microemulsions (PSM) that were recently discovered in our lab and indentifing possible uses of their long-range ordered nanostructures towards bioseparation, oil-recovery and drug delivery systems. In addition, we are proposing strategies for synthesizing solid and long-range ordered materials with unit cells on the nanometer scale using polymerization and/or cross-linking to solidify the soft template.
Date:
February 15, 2011
Creator:
Strey, Helmut H.
Object Type:
Report
System:
The UNT Digital Library
UNDERSTANDING THE LOCAL ATOMIC LEVEL EFFECTS OF DOPANTS IN COMPLEX METAL HYDRIDES USING SYNCHROTRON XRAY ABSORPTION SPECTROSCOPY AND DENSITY FUNCTIONAL THEORY
This work resulted in five peer-reviewed journal publications (appended), as well as one doctoral dissertation and two masters theses.
Date:
February 15, 2013
Creator:
Dobbins, Tabbetha
Object Type:
Report
System:
The UNT Digital Library
Energy Efficient Building Ventilation Systems
Advanced Research Projects Agency-Energy project sheet summarizing general information about the Building Energy Efficiency Through Innovative Thermodevices (BEETIT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses air conditioning that uses moisture and heat exchange technology as part of the "Innovative Building-Integrated Enthalpy Recovery" project.
Date:
February 15, 2012
Creator:
Architectural Application
Object Type:
Text
System:
The UNT Digital Library
XML Network Description Language (XNDL) for ns-3
None
Date:
February 15, 2013
Creator:
Banks, L. E.; Barnes, P. D.; Jefferson, D. R. & Nikolaev, S.
Object Type:
Report
System:
The UNT Digital Library
Elastic Metal Alloy Refrigerants
Advanced Research Projects Agency-Energy project sheet summarizing general information about the Building Energy Efficiency Through Innovative Thermodevices (BEETIT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses air conditioning with more efficient cooling systems as part of the "Thermoelastic Cooling" project.
Date:
February 15, 2012
Creator:
University of Maryland
Object Type:
Text
System:
The UNT Digital Library
Compact Solid State Cooling Systems
Advanced Research Projects Agency-Energy project sheet summarizing general information about the Building Energy Efficiency Through Innovative Thermodevices (BEETIT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses air conditioning that eliminates polluting refrigerants as part of the "Compact MEMS Electrocaloric Module" project.
Date:
February 15, 2012
Creator:
University of California, Los Angeles
Object Type:
Text
System:
The UNT Digital Library
Liquid Desiccant in Air Conditioners
Advanced Research Projects Agency-Energy project sheet summarizing general information about the Building Energy Efficiency Through Innovative Thermodevices (BEETIT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses air conditioning that would reduce system corrosion and be more efficient as part of the "Nano-Engineered Porous Hollow Fiber Membrane-Based Air Conditioning System" project.
Date:
February 15, 2012
Creator:
United Technologies Research Center
Object Type:
Text
System:
The UNT Digital Library
Helium-Based Soundwave Chiller
Advanced Research Projects Agency-Energy project sheet summarizing general information about the Building Energy Efficiency Through Innovative Thermodevices (BEETIT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses air conditioning with thermoacoustic freezers as part of the "Trillium: A Helium-Based Sonic Chiller- Tons of Freezing with 0 GWP Refrigerants" project.
Date:
February 15, 2012
Creator:
Pennsylvania State University
Object Type:
Text
System:
The UNT Digital Library
A turbulent transport network model in MULTIFLUX coupled with TOUGH2
A new numerical method is described for the fully iterated, conjugate solution of two discrete submodels, involving (a) a transport network model for heat, moisture, and airflows in a high-permeability, air-filled cavity; and (b) a variably saturated fractured porous medium. The transport network submodel is an integrated-parameter, computational fluid dynamics solver, describing the thermal-hydrologic transport processes in the flow channel system of the cavity with laminar or turbulent flow and convective heat and mass transport, using MULTIFLUX. The porous medium submodel, using TOUGH2, is a solver for the heat and mass transport in the fractured rock mass. The new model solution extends the application fields of TOUGH2 by integrating it with turbulent flow and transport in a discrete flow network system. We present demonstrational results for a nuclear waste repository application at Yucca Mountain with the most realistic model assumptions and input parameters including the geometrical layout of the nuclear spent fuel and waste with variable heat load for the individual containers. The MULTIFLUX and TOUGH2 model elements are fully iterated, applying a programmed reprocessing of the Numerical Transport Code Functionalization model-element in an automated Outside Balance Iteration loop. The natural, convective airflow field and the heat and mass transport …
Date:
February 15, 2011
Creator:
Danko, G.; Bahrami, D. & Birkholzer, J.T.
Object Type:
Article
System:
The UNT Digital Library
Summary Report on CO{sub 2} Geologic Sequestration & Water Resources Workshop
The United States Environmental Protection Agency (EPA) and Lawrence Berkeley National Laboratory (LBNL) jointly hosted a workshop on “CO{sub 2} Geologic Sequestration and Water Resources” in Berkeley, June 1–2, 2011. The focus of the workshop was to evaluate R&D needs related to geological storage of CO{sub 2} and potential impacts on water resources. The objectives were to assess the current status of R&D, to identify key knowledge gaps, and to define specific research areas with relevance to EPA’s mission. About 70 experts from EPA, the DOE National Laboratories, industry, and academia came to Berkeley for two days of intensive discussions. Participants were split into four breakout session groups organized around the following themes: Water Quality and Impact Assessment/Risk Prediction; Modeling and Mapping of Area of Potential Impact; Monitoring and Mitigation; Wells as Leakage Pathways. In each breakout group, participants identified and addressed several key science issues. All groups developed lists of specific research needs; some groups prioritized them, others developed short-term vs. long-term recommendations for research directions. Several crosscutting issues came up. Most participants agreed that the risk of CO{sub 2} leakage from sequestration sites that are properly selected and monitored is expected to be low. However, it also became …
Date:
February 15, 2012
Creator:
Varadharajan, C.; Birkholzer, J.; Kraemer, S.; Porse, S.; Carroll, S.; Wilkin, R. et al.
Object Type:
Report
System:
The UNT Digital Library
Carbon Dioxide and Ionic Liquid Refrigerants
Advanced Research Projects Agency-Energy project sheet summarizing general information about the Building Energy Efficiency Through Innovative Thermodevices (BEETIT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses air conditioning that uses new refrigerants as part of the "Compact, Efficient Air Conditioning with Ionic Liquid-Based Refrigerants" project.
Date:
February 15, 2012
Creator:
University of Notre Dame
Object Type:
Text
System:
The UNT Digital Library
Geant4 Applications for Modeling Molecular Transport in Complex Vacuum Geometries
None
Date:
February 15, 2013
Creator:
Singal, J.; Langton, J. & Schindler, R.
Object Type:
Article
System:
The UNT Digital Library
Evaluation of sustained release polylactate electron donors for removal of hexavalent chromium from contaminated groundwater
To evaluate the efficacy of bioimmobilization of Cr(VI) in groundwater at the Department of Energy Hanford site, we conducted a series of microcosm experiments using a range of commercial electron donors with varying degrees of lactate polymerization (polylactate). These experiments were conducted using Hanford Formation sediments (coarse sand and gravel) immersed in Hanford groundwater, which were amended with Cr(VI) and several types of lactate-based electron donors (Hydrogen Release Compound, HRC; primer-HRC, pHRC; extended release HRC) and the polylactate-cysteine form (Metal Remediation Compound, MRC). The results showed that polylactate compounds stimulated an increase in bacterial biomass and activity to a greater extent than sodium lactate when applied at equivalent carbon concentrations. At the same time, concentrations of headspace hydrogen and methane increased and correlated with changes in the microbial community structure. Enrichment of Pseudomonas spp. occurred with all lactate additions, and enrichment of sulfate-reducing Desulfosporosinus spp. occurred with almost complete sulfate reduction. The results of these experiments demonstrate that amendment with the pHRC and MRC forms result in effective removal of Cr(VI) from solution most likely by both direct (enzymatic) and indirect (microbially generated reductant) mechanisms.
Date:
February 15, 2011
Creator:
Brodie, E. L.; Joyner, D. C.; Faybishenko, B.; Conrad, M. E.; Rios-Velazquez, C.; Mork, B. et al.
Object Type:
Article
System:
The UNT Digital Library
High-Efficiency Stirling Air Conditioning
Advanced Research Projects Agency-Energy project sheet summarizing general information about the Building Energy Efficiency Through Innovative Thermodevices (BEETIT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses air conditioning that would use no polluting refrigerants as part of the "Stirling Air Conditioner for Compact Cooling" project.
Date:
February 15, 2012
Creator:
Infinia Corporation
Object Type:
Text
System:
The UNT Digital Library
High Efficiency Adsorption Chillers
Advanced Research Projects Agency-Energy project sheet summarizing general information about the Building Energy Efficiency Through Innovative Thermodevices (BEETIT) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses air conditioning that would be smaller, more efficient, and cheaper as part of the "High Efficiency Adsorption Cooling Using Metal Organic Heat Carriers" project.
Date:
February 15, 2012
Creator:
Pacific Northwest National Laboratory (U.S.)
Object Type:
Text
System:
The UNT Digital Library
Statistical line-by-line model for atomic spectra in intermediate coupling
None
Date:
February 15, 2012
Creator:
Iglesias, C
Object Type:
Article
System:
The UNT Digital Library