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464 Matching Results
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D = 5 Maximally Supersymmetric Yang-Mills Theory Diverges at Six Loops
None
Date:
October 31, 2012
Creator:
Bern, Zvi; Carrasco, John Joseph; Dixon, Lance J.; Douglas, Michael R.; von Hippel, Matt & Johansson, Henrik
Object Type:
Article
System:
The UNT Digital Library
2012 SRNL-EM VANE RHEOLOGY RESULTS
The vane method has been shown to be an effective tool in measuring the yield stress of both settled and mixed slurries in laboratory bench scale conditions in supporting assessments of both actual and simulant waste slurries. The vane has also been used to characterize dry powders and granular solids, the effect of non-cohesive solids with interstitial fluids and used as a guide to determine if slip is present in the geometries typically used to perform rheological flow curve measurements. The vane has been extensively characterized for measuring the shear strength in soils in both field and laboratory studies. The objectives for this task are: Fabricate vane instrument; Bench top testing to further characterize the effect of cohesive, non-cohesive, and blends of cohesive/non-cohesive simple simulants; Data from measurement of homogenized and settled bed of Kaolin sludge and assessment of the technology. In this document, the assessment using bench scale measurements of non-cohesive materials (beads) and cohesive materials (kaolin) is discussed. The non-cohesive materials include various size beads and the vane was assessed for depth and deaeration (or packing) via tapping measurements. For the cohesive (or non-Newtonian) materials, flow curves and yield stress measurements are performed using the vane and this …
Date:
August 31, 2012
Creator:
Hansen, E.; Marzolf, A. & Hera, K.
Object Type:
Report
System:
The UNT Digital Library
Activity Coefficients at Infinite Dilution for Organic Compounds Dissolved in 1-Alkyl-1-methylpyrrolidinium Bis(trifluoromethylsulfonyl)imide Ionic Liquids Having Six-, Eight-, and Ten-Carbon Alkyl Chains
Article on activity coefficients at infinite dilution for organic compounds dissolved in 1-alkyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquids having six-, eight-, and ten-carbon alkyl chains.
Date:
October 31, 2012
Creator:
Acree, William E. (William Eugene); Baker, Gary A.; Revelli, Anne-Laure; Moïse, Jean-Charles & Mutelet, Fabrice
Object Type:
Article
System:
The UNT Digital Library
Advanced Accelerator Physics Research at UCLA
Closeout report on Advanced Accelerator Physics program at UCLA Physics & Astronomy
Date:
August 31, 2012
Creator:
Cline, David B
Object Type:
Report
System:
The UNT Digital Library
Advanced Acid Gas Separation Technology for the Utilization of Low Rank Coals
Air Products has developed a potentially ground-breaking technology – Sour Pressure Swing Adsorption (PSA) – to replace the solvent-based acid gas removal (AGR) systems currently employed to separate sulfur containing species, along with CO{sub 2} and other impurities, from gasifier syngas streams. The Sour PSA technology is based on adsorption processes that utilize pressure swing or temperature swing regeneration methods. Sour PSA technology has already been shown with higher rank coals to provide a significant reduction in the cost of CO{sub 2} capture for power generation, which should translate to a reduction in cost of electricity (COE), compared to baseline CO{sub 2} capture plant design. The objective of this project is to test the performance and capability of the adsorbents in handling tar and other impurities using a gaseous mixture generated from the gasification of lower rank, lignite coal. The results of this testing are used to generate a high-level pilot process design, and to prepare a techno-economic assessment evaluating the applicability of the technology to plants utilizing these coals.
Date:
December 31, 2012
Creator:
Kloosterman, Jeff
Object Type:
Report
System:
The UNT Digital Library
Advanced Electric Submersible Pump Design Tool for Geothermal Applications
Electrical Submersible Pumps (ESPs) present higher efficiency, larger production rate, and can be operated in deeper wells than the other geothermal artificial lifting systems. Enhanced Geothermal Systems (EGS) applications recommend lifting 300 C geothermal water at 80kg/s flow rate in a maximum 10-5/8-inch diameter wellbore to improve the cost-effectiveness. In this paper, an advanced ESP design tool comprising a 1D theoretical model and a 3D CFD analysis has been developed to design ESPs for geothermal applications. Design of Experiments was also performed to optimize the geometry and performance. The designed mixed-flow type centrifugal impeller and diffuser exhibit high efficiency and head rise under simulated EGS conditions. The design tool has been validated by comparing the prediction to experimental data of an existing ESP product.
Date:
May 31, 2012
Creator:
Qi, Xuele; Turnquist, Norman & Ghasripoor, Farshad
Object Type:
Article
System:
The UNT Digital Library
Advanced Gearless Drivetrain - Phase I Technical Report
Boulder Wind Power (ÃÂâÃÂÃÂÃÂÃÂBWPÃÂâÃÂÃÂÃÂÃÂ) collaborated with the National Renewable Energy Laboratory (NREL) in Golden, Colorado, to demonstrate the economics of scaling an advanced gearless drivetrain technology to 6MW (and larger) turbine applications. The project goal was to show that this advanced drivetrain technology enables a cost of energy of less than $0.10/kWH in offshore applications. This drivetrain technology achieves this Cost of Energy (ÃÂâÃÂÃÂÃÂÃÂCOEÃÂâÃÂÃÂÃÂÃÂ) advantage via a 70% greater torque density versus current state-of-the-art drivetrain technologies. In addition, a new dynamically compliant design strategy is required to optimize turbine system-level COE. The BWP generator is uniquely suited for this new design strategy. This project developed a concept design for a 6MW drivetrain and culminated in a plan for a system-level test of this technology at 3MW scale. The project further demonstrated the advantage of the BWP drivetrain with increasing power ratings, with conceptual designs through 10 MW.
Date:
August 31, 2012
Creator:
Butterfield, Sandy; Smith, Jim; Petch, Derek; Sullivan, Brian; Smith, Peter & Pierce, Kirk
Object Type:
Report
System:
The UNT Digital Library
ADVANCED METHODS FOR THE COMPUTATION OF PARTICLE BEAM TRANSPORT AND THE COMPUTATION OF ELECTROMAGNETIC FIELDS AND MULTIPARTICLE PHENOMENA
Since 1980, under the grant DEFG02-96ER40949, the Department of Energy has supported the educational and research work of the University of Maryland Dynamical Systems and Accelerator Theory (DSAT) Group. The primary focus of this educational/research group has been on the computation and analysis of charged-particle beam transport using Lie algebraic methods, and on advanced methods for the computation of electromagnetic fields and multiparticle phenomena. This Final Report summarizes the accomplishments of the DSAT Group from its inception in 1980 through its end in 2011.
Date:
August 31, 2012
Creator:
Dragt, Alex J.
Object Type:
Report
System:
The UNT Digital Library
Advanced Palladium Membrane Scale-up for Hydrogen Separation
The main objective of this project was to construct, test, and demonstrate a Pd-Cu metallic tubular membrane micro-channel separator capable of producing 2 lb day{sup -1} H{sub 2} at â¥95% recovery when operating downstream of an actual coal gasifier. A key milestone for the project was to complete a pilot-scale gasifier test by 1 September 2011 and demonstrate the separation of 2 lb day{sup -1} H{sub 2} to verify progress toward the DOEâs goals prior to down-selection for larger-scale (â100 lb day{sup -1}) hydrogen separator development. Three different pilot-scale (â1.5 ft{sup 2}) separators were evaluated downstream of coal gasifiers during four different tests and the key project milestone was achieved in August 2011, ahead of schedule. During three of those tests, all of the separators demonstrated or exceeded the targeted separation rate of 2 lb day{sup -1} H{sub 2}. The separator design was proved to be leak tight and durable in the presence of gasifier exhaust contaminants at temperatures and pressures up to 500 °C and 500 psia. The contaminants in the coal gasifier syngas for the most part had negligible impact on separator performance, with H{sub 2} partial pressure being the greatest determinant of membrane performance. Carbon monoxide and …
Date:
October 31, 2012
Creator:
Emerson, Sean; Magdefrau, Neal; She, Ying & Thibaud-Erkey, Catherine
Object Type:
Report
System:
The UNT Digital Library
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, but OEF casualties also include American casualties in other countries, listed within this report.
Date:
May 31, 2012
Creator:
Chesser, Susan G.
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 137, No. 2, Ed. 1 Thursday, May 31, 2012
Weekly newspaper from Albany, Texas that includes local, state and national news along with advertising.
Date:
May 31, 2012
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
The Altus Times (Altus, Okla.), Vol. 112, No. 211, Ed. 1 Tuesday, January 31, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 31, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 112, No. 294, Ed. 1 Thursday, May 31, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 31, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 113, No. 43, Ed. 1 Tuesday, July 31, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 31, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 113, No. 66, Ed. 1 Friday, August 31, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 31, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 113, No. 110, Ed. 1 Wednesday, October 31, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 31, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Alumina-Forming Austenitics: A New Approach to Thermal and Degradation Resistant Stainless Steels for Industrial Use
A series of developmental AFA alloys was selected for study based on: 25 Ni wt.% (alloys A-F), 20 wt% Ni (alloys G-H), and 12 Ni wt.% (alloys I-L). An emphasis in this work was placed on the lower alloy content direction for AFA alloys to reduce alloy raw material cost, rather than more highly alloyed and costly AFA alloys for higher temperature performance. Alloys A-D explored the effects of Al (3-4 wt.%) and C (0.05-0.2 wt.%) in the Fe-25Ni-14Cr-2Mn-2Mo-1W-1Nb wt.% base range; alloys E and F explored the effects of removing costly Mo and W additions in a Fe-25Ni-14Cr-4Al-2.5Nb-2Mn-0.2C base, alloys G and H examined Nb (1-2.5wt.%) and removal of Mo, W in a Fe-20Ni-14Cr-3Al-2Mn-0.2 C wt.% base; and alloys I-L examined effects of C (0.1-0.2 wt.%) and Mn (5-10 wt.%) on a low cost Fe-14Cr-12Ni-3Cu-2.5Al wt.% base (no Mo, W additions). Creep testing resulted in elemental trends that included the beneficial effect of higher carbon and lower niobium in 20-25%Ni AFA alloys and, the beneficial of lower Mn in 12%Ni AFA alloys. Corrosion tests in steam and sulfidation-oxidation environments showed, in general, these alloys were capable of a ten-fold improvement in performance when compared to conventional austenitic stainless steels. …
Date:
May 31, 2012
Creator:
Helmick, David A; Magee, John H & Brady, Michael P
Object Type:
Report
System:
The UNT Digital Library
Alvarado Star (Alvarado, Tex.), Vol. 16, No. 38, Ed. 1 Thursday, May 31, 2012
Weekly newspaper from Alvarado, Texas that includes local, state, and national news along with advertising.
Date:
May 31, 2012
Creator:
McMichen, Candy
Object Type:
Newspaper
System:
The Portal to Texas History
Analysis of Self-Similar Solutions of Multidimensional Conservation Laws
This project brought large-scale, advanced methods for numerical solution of PDE to bear on the two-dimensional Riemann problem, and obtained numerical solution of problem. This numerical solution allowed us to describe key features of the solution. Analysis was combined with numerical solution to explain these numerical results. High-resolution, large-scale numerical computations show for the #12;first time that a shock forms strictly in the supersonic region. Numerical solutions appear to show the disappearance of a diffracting shock at a sonic line.
Date:
August 31, 2012
Creator:
Tesdall, Allen M.
Object Type:
Report
System:
The UNT Digital Library
An Analysis of Statewide Adoption Rates of Building Energy Code by Local Jurisdictions
The purpose of this study is to generally inform the U.S. Department of Energy’s Building Energy Codes Program of the local, effective energy code adoption rate for a sample set of 21 states, some which have adopted statewide codes and some that have not. Information related to the residential energy code adoption process and status at the local jurisdiction was examined for each of the states. Energy code status information was gathered for approximately 2,800 jurisdictions, which effectively covered approximately 80 percent of the new residential building construction in the 21 states included in the study.
Date:
December 31, 2012
Creator:
Cort, Katherine A. & Butner, Ryan S.
Object Type:
Report
System:
The UNT Digital Library
Anthrax: DHS Faces Challenges in Validating Methods for Sample Collection and Analysis
A letter report issued by the Government Accountability Office with an abstract that begins "A workgroupled by the U.S. Department of Homeland Security (DHS) and made up of DHS and the Centers for Disease Control and Prevention (CDC), the Environmental Protection Agency (EPA), the Federal Bureau of Investigation (FBI), and the National Institute of Standards and Technology (NIST)has attempted to address GAOs recommendations to (1) validate environmental sampling methods for detecting Bacillus anthracis and (2) conduct studies to develop probability-based sampling approaches for indoor environments. This workgroup has taken some actions to validate environmental sampling methods (collection, transportation, preparation, analysis) and develop statistically based sampling approaches that will provide confidence statements when test results are negative. These activities were projected to be completed by fiscal year 2013, but delays are now expected."
Date:
July 31, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Antibiotics: FDA Needs to Do More to Ensure That Drug Labels Contain Up-to-Date Information
A letter report issued by the Government Accountability Office with an abstract that begins "FDA has not taken sufficient steps to ensure that antibiotic labels contain up-to-date breakpoints. FDA designates certain drugs as reference-listed drugs and the sponsors of these drugs play an important role in ensuring the accuracy of drug labels. Reference-listed drugs are approved drug products to which generic versions are compared. As of November 2011, FDA had not yet confirmed whether the breakpoints on the majority of reference-listed antibiotics labels were up to date. FDA contacted sponsors of 210 antibiotics in early 2008 to remind sponsors of the importance of maintaining their labels and requested that they assess whether the breakpoints on their drugs labels were up to date. Sponsors were asked to submit evidence to FDA showing that the breakpoints were either current or needed revision. As of November 2011, over 3.5 years after FDA contacted sponsors, the agency had not yet confirmed whether the breakpoints on the labels of 70 percent, or 146 of the 210 antibiotics, were up to date. FDA has not ensured that sponsors have fulfilled the responsibilities outlined in the early 2008 letters. For those submissions FDA has received, it has …
Date:
January 31, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Applicability of the “Gallet equation” to the vegetation clearances of NERC Reliability Standard FAC-003-2
NERC has proposed a standard to use to specify clearances between vegetation and power lines. The purpose of the rule is to reduce the probability of flashover to a calculably low level. This report was commissioned by FERC’s Office of Electrical Reliability. The scope of the study was analysis of the mathematics and documentation of the technical justification behind the application of the Gallet equation and the assumptions used in the technical reference paper
Date:
March 31, 2012
Creator:
Kirkham, Harold
Object Type:
Report
System:
The UNT Digital Library
Appropriations: CRS Experts
None
Date:
July 31, 2012
Creator:
Lake, Jennifer E.
Object Type:
Report
System:
The UNT Digital Library