Compact, Inexpensive, Safe, and Rapidly Refuelable Hydrogen Storage in Cryogenic Pressure Vessels (open access)

Compact, Inexpensive, Safe, and Rapidly Refuelable Hydrogen Storage in Cryogenic Pressure Vessels

None
Date: September 21, 2012
Creator: Aceves, S. M.; Petitpas, G.; Espinosa-Loza, F.; Matthews, M. J. & Ledesma-Orozco, E.
Object Type: Article
System: The UNT Digital Library
Analysis of Radiocarbon, Stable Isotopes and DNA in Teeth to Facilitate Identification of Unknown Decedents (open access)

Analysis of Radiocarbon, Stable Isotopes and DNA in Teeth to Facilitate Identification of Unknown Decedents

None
Date: August 21, 2012
Creator: Alkass, K.; Saitoh, H.; Buchholz, B. A.; Holmlund, G.; Senn, D. R.; Spalding, K. L. et al.
Object Type: Article
System: The UNT Digital Library
Averages of B-Hadron, C-Hadron, and Tau-Lepton Properties as of Early 2012 (open access)

Averages of B-Hadron, C-Hadron, and Tau-Lepton Properties as of Early 2012

This report talks about Averages of B-Hadron, C-Hadron, and Tau-Lepton Properties as of Early 2012
Date: December 21, 2012
Creator: Amhis, Y.; /LPHE, Lausanne; Banerjee, Sw.; U., /Victoria; Bernhard, R.; U., /Freiburg et al.
Object Type: Article
System: The UNT Digital Library
U.S.-EU Cooperation Against Terrorism (open access)

U.S.-EU Cooperation Against Terrorism

This report examines the evolution of counterterrorism cooperation between the United States and the European Union (EU), particularly since the September 11, 2001 terrorist attacks. It includes a discussion of U.S.-EU cooperation progress and ongoing challenges, as well as perspectives and issues for Congress.
Date: May 21, 2012
Creator: Archick, Kristin
Object Type: Report
System: The UNT Digital Library
Direct Wind Superconducting Corrector Magnets for the SUPERKEKB IR (open access)

Direct Wind Superconducting Corrector Magnets for the SUPERKEKB IR

N/A
Date: May 21, 2012
Creator: B., Parker; Anerella, M.; Escallier, J.; Ghosh, A.; Jain, A.; Marone, A. et al.
Object Type: Article
System: The UNT Digital Library
Water conservation savings quantification study (open access)

Water conservation savings quantification study

This report discusses a series of research tasks regarding approaches to quantifying conservation savings.
Date: February 21, 2012
Creator: BBC Research & Consulting
Object Type: Report
System: The Portal to Texas History
FINAL REPORT FOR INDEPENDENT CONFIRMATORY SURVEY SUMMARY AND RESULTS FOR THE HEMATITE DECOMMISSIONING PROJECT, FESTUS, MISSOURI (open access)

FINAL REPORT FOR INDEPENDENT CONFIRMATORY SURVEY SUMMARY AND RESULTS FOR THE HEMATITE DECOMMISSIONING PROJECT, FESTUS, MISSOURI

ORAU conducted confirmatory surveys of the Hematite site during the period of June 12 through June 13, 2012. The survey activities included in-process inspections, document review, walkover surveys, sampling activities, and laboratory analysis of split samples. WEC was forthcoming with information relating to practices, procedures, and surface scan results. Scans performed by the WEC technician were extremely thorough and methodical. The WEC and ORAU technicians identified the same areas of elevated activity with comparable detector responses. WEC sampling of re-use soils, waste soils, sediments, and groundwater were conducted under ORAU observation. The sampling efforts observed by ORAU were performed in accordance with site-specific procedures and in a manner sufficient to provide quality supporting data. Three observations were made during groundwater sampling activities. First, the water level indicator was re-used without submitting rinse blank. Second, bubbles created during tubing extraction could indicate the presence of volatilized organic compounds. Third, samplers did not use a photo ionization detector prior to sample collection to indicate the presence of volatile organic vapors. Results of split samples indicated a high level of comparability between the WEC and ORAU/ORISE radiological laboratories. Analytical practices and procedures appear to be sufficient in providing quality radiochemical data. All concentrations …
Date: September 21, 2012
Creator: Bailey, Erika N. & Lee, Jason D.
Object Type: Report
System: The UNT Digital Library
Techno-economic Modeling of the Integration of 20% Wind and Large-scale Energy Storage in ERCOT by 2030 (open access)

Techno-economic Modeling of the Integration of 20% Wind and Large-scale Energy Storage in ERCOT by 2030

This study’s objective is to examine interrelated technical and economic avenues for the Electric Reliability Council of Texas (ERCOT) grid to incorporate up to and over 20% wind generation by 2030. Our specific interests are to look at the factors that will affect the implementation of both high level of wind power penetration (> 20% generation) and installation of large scale storage.
Date: December 21, 2012
Creator: Baldick, Ross; Webber, Michael; King, Carey; Garrison, Jared; Cohen, Stuart & Lee, Duehee
Object Type: Report
System: The UNT Digital Library
Richardson Extrapolation for Linearly Degenerate Discontinuities (open access)

Richardson Extrapolation for Linearly Degenerate Discontinuities

None
Date: May 21, 2012
Creator: Banks, J W & Aslam, T D
Object Type: Article
System: The UNT Digital Library
A stable FSI algorithm for light rigid bodies in compressible flow (open access)

A stable FSI algorithm for light rigid bodies in compressible flow

None
Date: May 21, 2012
Creator: Banks, J. W.; Henshaw, W. D. & Sjogreen, B.
Object Type: Article
System: The UNT Digital Library
Analysis of Full Charge Reconstruction Algorithms for X-Ray Pixelated Detectors (open access)

Analysis of Full Charge Reconstruction Algorithms for X-Ray Pixelated Detectors

Existence of the natural diffusive spread of charge carriers on the course of their drift towards collecting electrodes in planar, segmented detectors results in a division of the original cloud of carriers between neighboring channels. This paper presents the analysis of algorithms, implementable with reasonable circuit resources, whose task is to prevent degradation of the detective quantum efficiency in highly granular, digital pixel detectors. The immediate motivation of the work is a photon science application requesting simultaneous timing spectroscopy and 2D position sensitivity. Leading edge discrimination, provided it can be freed from uncertainties associated with the charge sharing, is used for timing the events. Analyzed solutions can naturally be extended to the amplitude spectroscopy with pixel detectors.
Date: May 21, 2012
Creator: Baumbaugh, A.; Carini, G.; Deptuch, G.; Grybos, P.; Hoff, J.; Siddons, P. et al.
Object Type: Article
System: The UNT Digital Library
The Rockstar Phase-Space Temporal HALO Finder and the Velocity Offsets of Cluster Cores (open access)

The Rockstar Phase-Space Temporal HALO Finder and the Velocity Offsets of Cluster Cores

Presents a new algorithm for identifying dark matter halos, substructure, and tidal features.
Date: December 21, 2012
Creator: Behroozi, Peter S.; Wechsler, Risa H. & Wu, Hao-Yi
Object Type: Article
System: The UNT Digital Library
Gravitationally Consistent HALO Catalogs and Merger Trees for Precision Cosmology (open access)

Gravitationally Consistent HALO Catalogs and Merger Trees for Precision Cosmology

Presents a new algorithm for generating merger trees and halo catologs.
Date: December 21, 2012
Creator: Behroozi, Peter S.; Wechsler, Risa H.; Wu, Hao-Yi; Busha, Michael T.; Klypin, Anatoly A. & Primack, Joel R.
Object Type: Article
System: The UNT Digital Library
An Equivalent Circuit Model and Power Calculations for the APS SPX Crab Cavities. (open access)

An Equivalent Circuit Model and Power Calculations for the APS SPX Crab Cavities.

An equivalent parallel resistor-inductor-capacitor (RLC) circuit with beam loading for a polarized TM110 dipole-mode cavity is developed and minimum radio-frequency (rf) generator requirements are calculated for the Advanced Photon Source (APS) short-pulse x-ray (SPX) superconducting rf (SRF) crab cavities. A beam-loaded circuit model for polarized TM110 mode crab cavities was derived. The single-cavity minimum steady-state required generator power has been determined for the APS SPX crab cavities for a storage ring current of 200mA DC current as a function of external Q for various vertical offsets including beam tilt and uncontrollable detuning. Calculations to aid machine protection considerations were given.
Date: March 21, 2012
Creator: Berenc, T.
Object Type: Report
System: The UNT Digital Library
Applying graph partitioning methods in measurement-based dynamic load balancing (open access)

Applying graph partitioning methods in measurement-based dynamic load balancing

None
Date: February 21, 2012
Creator: Bhatele, A; Fourestier, S; Menon, H; Kale, L V & Pellegrini, F
Object Type: Report
System: The UNT Digital Library
Scientific/Technical Report (open access)

Scientific/Technical Report

This symposium aimed to bring together researchers working on quantifying nanoscale carrier transport processes in excitonic solar cells. Excitonic solar cells, including all-organic, hybrid organic-inorganic and dye-sensitized solar cells (DSSCs), offer strong potential for inexpensive and large-area solar energy conversion. Unlike traditional inorganic semiconductor solar cells, where all the charge generation and collection processes are well understood, these excitonic solar cells contain extremely disordered structures with complex interfaces which results in large variations in nanoscale electronic properties and has a strong influence on carrier generation, transport, dissociation and collection. Detailed understanding of these processes is important for fabrication of highly efficient solar cells. Efforts to improve efficiency are underway at a large number of research groups throughout the world focused on inorganic and organic semiconductors, photonics, photophysics, charge transport, nanoscience, ultrafast spectroscopy, photonics, semiconductor processing, device physics, device structures, interface structure etc. Rapid progress in this multidisciplinary area requires strong synergetic efforts among researchers from diverse backgrounds. Such efforts can lead to novel methods for development of new materials with improved photon harvesting and interfacial treatments for improved carrier transport, process optimization to yield ordered nanoscale morphologies with well-defined electronic structures.
Date: November 21, 2012
Creator: Bommissetty, Venkat
Object Type: Report
System: The UNT Digital Library
Replacement of Lighting Fixtures with LED Energy Efficient Lights at the Parking Facility, Milwaukee, Wisconsin (open access)

Replacement of Lighting Fixtures with LED Energy Efficient Lights at the Parking Facility, Milwaukee, Wisconsin

The Forest County Potawatomi Community (FCPC or Tribe) owns a six-story parking facility adjacent to its Potawatomi Bingo Casino (the Casino) in Milwaukee, Wisconsin, as well as a valet parking facility under the Casino (collectively, the Parking Facility). The Parking Facility contained 205-watt metal halide-type lights that, for security reasons, operated 24 hours per day, 7 days per week. Starting on August 30, 2010, the Tribe replaced these fixtures with 1,760 state-of-the-art, energy efficient 55-Watt LED lights. This project resulted in an immediate average reduction in monthly peak demand of 238 kW over the fourth quarter of 2010. The average reduction in monthly peak demand from October 1 through December 31, 2010 translates into a forecast annual electrical energy reduction of approximately 1,995,000 kWh or 47.3% of the pre-project demand. This project was technically effective, economically feasible, and beneficial to the public not only in terms of long term energy efficiency and associated emissions reductions, but also in the short-term jobs provided for the S.E. Wisconsin region. The project was implemented, from approval by U.S. Department of Energy (DOE) to completion, in less than 6 months. The project utilized off-the-shelf proven technologies that were fabricated locally and installed by local …
Date: June 21, 2012
Creator: Brien, David
Object Type: Report
System: The UNT Digital Library
Crystalline Ceramic Waste Forms: Report Detailing Data Collection In Support Of Potential FY13 Pilot Scale Melter Test (open access)

Crystalline Ceramic Waste Forms: Report Detailing Data Collection In Support Of Potential FY13 Pilot Scale Melter Test

The research conducted in this work package is aimed at taking advantage of the long term thermodynamic stability of crystalline ceramics to create more durable waste forms (as compared to high level waste glass) in order to reduce the reliance on engineered and natural barrier systems. Durable ceramic waste forms that incorporate a wide range of radionuclides have the potential to broaden the available disposal options and to lower the storage and disposal costs associated with advanced fuel cycles. Assemblages of several titanate phases have been successfully demonstrated to incorporate radioactive waste elements, and the multiphase nature of these materials allows them to accommodate variation in the waste composition. Recent work has shown that they can be successfully produced from a melting and crystallization process. The objective of this report is to summarize the data collection in support of future melter demonstration testing for crystalline ceramic waste forms. The waste stream used as the basis for the development and testing is a combination of the projected Cs/Sr separated stream, the Trivalent Actinide - Lanthanide Separation by Phosphorous reagent Extraction from Aqueous Komplexes (TALSPEAK) waste stream consisting of lanthanide fission products, the transition metal fission product waste stream resulting from the …
Date: September 21, 2012
Creator: Brinkman, K. S.; Amoroso, J.; Marra, J. C. & Fox, K. M.
Object Type: Report
System: The UNT Digital Library
Unauthorized Alien Students: Issues and "DREAM Act" Legislation (open access)

Unauthorized Alien Students: Issues and "DREAM Act" Legislation

The 109th and 110th Congresses considered, but did not enact, comprehensive immigration reform legislation that included large-scale legalization programs for unauthorized aliens. In the aftermath of these unsuccessful efforts, some interested parties have urged the President and Congress to pursue more limited legislation to address the status of unauthorized alien students. Such legislation is commonly referred to as the "DREAM Act."
Date: March 21, 2012
Creator: Bruno, Andorra
Object Type: Report
System: The UNT Digital Library
The Repeal of "Don't Ask, Don't Tell": Issues for Congress (open access)

The Repeal of "Don't Ask, Don't Tell": Issues for Congress

On December 22, 2010, President Obama signed P.L. 111-321 into law. It called for the repeal of the existing law (Title 10, United States Code, §654) barring open homosexuality in the military by prescribing a series of steps that must take place before repeal occurs. One step was fulfilled on July 22, 2011, when the President signed the certification of the process ending the Don't Ask, Don't Tell policy, which was repealed on September 20, 2011. However, in repealing the law and the so-called "Don't Ask, Don't Tell" policy, a number of issues have been raised, but were not addressed by P.L. 111-321. This report considers issues that Congress may wish to consider regarding matters arising as a result of the repeal of §654.
Date: December 21, 2012
Creator: Burrelli, David F.
Object Type: Report
System: The UNT Digital Library
Remote Monitoring of the Structural Health of Hydrokinetic Composite Turbine Blades (open access)

Remote Monitoring of the Structural Health of Hydrokinetic Composite Turbine Blades

A health monitoring approach is investigated for hydrokinetic turbine blade applications. In-service monitoring is critical due to the difficult environment for blade inspection and the cost of inspection downtime. Composite blade designs have advantages that include long life in marine environments and great control over mechanical properties. Experimental strain characteristics are determined for static loads and free-vibration loads. These experiments are designed to simulate the dynamic characteristics of hydrokinetic turbine blades. Carbon/epoxy symmetric composite laminates are manufactured using an autoclave process. Four-layer composite beams, eight-layer composite beams, and two-dimensional eight-layer composite blades are instrumented for strain. Experimental results for strain measurements from electrical resistance gages are validated with theoretical characteristics obtained from in-house finite-element analysis for all sample cases. These preliminary tests on the composite samples show good correlation between experimental and finite-element strain results. A health monitoring system is proposed in which damage to a composite structure, e.g. delamination and fiber breakage, causes changes in the strain signature behavior. The system is based on embedded strain sensors and embedded motes in which strain information is demodulated for wireless transmission. In-service monitoring is critical due to the difficult environment for blade inspection and the cost of inspection downtime. Composite blade …
Date: September 21, 2012
Creator: Chandrashekhara, J.L. Rovey K.
Object Type: Report
System: The UNT Digital Library
Afghanistan Casualties: Military Forces and Civilians (open access)

Afghanistan Casualties: Military Forces and Civilians

This report collects statistics from a variety of sources on casualties sustained during Operation Enduring Freedom (OEF), which began on October 7, 2001, and is ongoing. OEF actions take place primarily in Afghanistan; however, OEF casualties also include American casualties in Pakistan, Uzbekistan, Guantanamo Bay (Cuba), Djibouti, Eritrea, Ethiopia, Jordan, Kenya, Kyrgyzstan, the Philippines, Seychelles, Sudan, Tajikistan, Turkey, and Yemen.
Date: March 21, 2012
Creator: Chesser, Susan G.
Object Type: Report
System: The UNT Digital Library
The 2012 Farm Bill: A Comparison of SenatePassed S. 3240 and the House Agriculture Committee’s H.R. 6083 with Current Law (open access)

The 2012 Farm Bill: A Comparison of SenatePassed S. 3240 and the House Agriculture Committee’s H.R. 6083 with Current Law

From Summary: "This report contains a more detailed summary of the major similarities and differences between the House and Senate 2012 farm bills and also provides a side-by-side comparison of every provision in the two farm bills and how these provisions relate to current federal law or policy."
Date: August 21, 2012
Creator: Chite, Ralph M.
Object Type: Report
System: The UNT Digital Library
Biofuels from Sorghum (open access)

Biofuels from Sorghum

Advanced Research Projects Agency-Energy project sheet summarizing general information about the Plants Engineered to Replace Oil (PETRO) program including critical needs, innovation and advantages, impacts, and contact information. This sheet discusses the bioengineering of sorghum plants as part of the "Plant-based Sesquiterpene Biofuels" project.
Date: May 21, 2012
Creator: Chromatin, Inc.
Object Type: Text
System: The UNT Digital Library