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459 Matching Results
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Unauthorized Alien Students: Issues and “DREAM Act” Legislation
None
Date:
February 27, 2013
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Tax Provisions Expiring in 2013 (“Tax Extenders”)
None
Date:
June 27, 2013
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Monte Carlo Simulation of Neutron Noise Effects on Beam Position Determination With Real and Simulated Beam Images at the National Ignition Facility
None
Date:
August 27, 2013
Creator:
Awwal, A.; Leach, R.; Datte, P. & Manuel, A.
Object Type:
Article
System:
The UNT Digital Library
Scoping Report: Advanced Technologies for Multi-Load Washers in Hospitality and Healthcare
The purpose of this demonstration project is to quantify the energy savings and water efficiency potential of commercial laundry wastewater recycling systems and low-temperature detergent supply systems to help promote the adoption of these technologies in the commercial sector. This project will create a set of technical specifications for efficient multi-load laundry systems (both new and retrofit) tailored for specific applications and/or sectors (e.g., hospitality, health care). The specifications will be vetted with the appropriate Better Buildings Alliance (BBA) members (e.g., Commercial Real Estate Energy Alliance, Hospital Energy Alliance), finalized, published, and disseminated to enable widespread technology transfer in the industry and specifically among BBA partners.
Date:
March 27, 2013
Creator:
Parker, Graham B.; Boyd, Brian K.; Petersen, Joseph M.; Goetzler, W.; Foley, K. J. & Sutherland, T. A.
Object Type:
Report
System:
The UNT Digital Library
Well Completion Report for Well ER-20-11, Corrective Action Units 101 and 102: Central and Western Pahute Mesa
Well ER-20-11 was drilled for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office in support of the Nevada Environmental Management Operations Underground Test Area (UGTA) Activity at the Nevada National Security Site (formerly Nevada Test Site), Nye County, Nevada. The well was drilled in September 2012 as part of the Central and Western Pahute Mesa Corrective Action Unit Phase II drilling program. Well ER-20-11 was constructed to further investigate the nature and extent of radionuclidecontaminated groundwater encountered in two nearby UGTA wells, to help define hydraulic and transport parameters for the contaminated Benham aquifer, and to provide data for the UGTA hydrostratigraphic framework model. The 44.5-centimeter (cm) surface hole was drilled to a depth of 520.0 meters (m) and cased with 34.0-cm casing to 511.5 m. The hole diameter was then decreased to 31.1 cm, and the borehole was drilled to a total depth of 915.6 m. The hole was completed to allow access for hydrologic testing and sampling in the target aquifer, which is a lava-flow aquifer known as the Benham aquifer. The completion casing string, set to the depth of 904.3 m, consists of a string of 6⅝-inch (in.) stainless-steel casing hanging from a …
Date:
February 27, 2013
Creator:
National Security Technologies, LLC
Object Type:
Report
System:
The UNT Digital Library
Using Photogrammetry to Estimate Tank Waste Volumes from Video
Washington River Protection Solutions (WRPS) contracted with HiLine Engineering & Fabrication, Inc. to assess the accuracy of photogrammetry tools as compared to video Camera/CAD Modeling System (CCMS) estimates. This test report documents the results of using photogrammetry to estimate the volume of waste in tank 241-C-I04 from post-retrieval videos and results using photogrammetry to estimate the volume of waste piles in the CCMS test video.
Date:
March 27, 2013
Creator:
Field, Jim G.
Object Type:
Report
System:
The UNT Digital Library
Status Report of the DPHEP Study Group: Towards a Global Effort for Sustainable Data Preservation in High Energy Physics
None
Date:
March 27, 2013
Creator:
Akopov, Zaven; Amerio, Silvia; Asner, David; Avetisyan, Eduard; Barring, Olof; Beacham, James et al.
Object Type:
Article
System:
The UNT Digital Library
Liquid Lithium Divertor and Scrape-Off-Layer Interactions on the National Spherical Torus Experiment: 2010 ? 2013 Progress Report
The implementation of the liquid Lithium Divertor (LLD) in NSTX presented a unique opportunity in plasma-material interactions studies. A high density Langmuir Probe (HDLP) array utilizing a dense pack of triple Langmuir probes was built at PPPL and the electronics designed and built by UIUC. It was shown that the HDLP array could be used to characterize the modification of the EEDF during lithium experiments on NSTX as well as characterize the transient particle loads during lithium experiments as a means to study ELMs. With NSTX being upgraded and a new divertor being installed, the HDLP array will not be used in NSTX-U. However UIUC is currently helping to develop two new systems for depositing lithium into NSTX-U, a Liquid Lithium Pellet Dripper (LLPD) for use with the granular injector for ELM mitigation and control studies as well as an Upward-Facing Lithium Evaporator (U-LITER) based on a flash evaporation system using an electron beam. Currently UIUC has Daniel Andruczyk Stationed at PPPL and is developing these systems as well as being involved in preparing the Materials Analysis Particle Probe (MAPP) for use in LTX and NSTX-U. To date the MAPP preparations have been completed. New sample holders were designed by …
Date:
August 27, 2013
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Role of Gravity Waves in the Formation and Organization of Clouds during TWPICE
All convective clouds emit gravity waves. While it is certain that convectively-generated waves play important parts in determining the climate, their precise roles remain uncertain and their effects are not (generally) represented in climate models. The work described here focuses mostly on observations and modeling of convectively-generated gravity waves, using the intensive observations from the DoE-sponsored Tropical Warm Pool International Cloud Experiment (TWP-ICE), which took place in Darwin, from 17 January to 13 February 2006. Among other things, the research has implications the part played by convectively-generated gravity waves in the formation of cirrus, in the initiation and organization of further convection, and in the subgrid-scale momentum transport and associated large-scale stresses imposed on the troposphere and stratosphere. The analysis shows two groups of inertia-gravity waves are detected: group L in the middle stratosphere during the suppressed monsoon period, and group S in the lower stratosphere during the monsoon break period. Waves belonging to group L propagate to the south-east with a mean intrinsic period of 35 h, and have vertical and horizontal wavelengths of about 5-6 km and 3000-6000 km, respectively. Ray tracing calculations indicate that these waves originate from a deep convective region near Indonesia. Waves belonging to …
Date:
September 27, 2013
Creator:
Reeder, Michael J.; Lane, Todd P. & Hankinson, Mai Chi Nguyen
Object Type:
Report
System:
The UNT Digital Library
Letter Report: LAW Simulant Development for Cast Stone Screening Test
More than 56 million gallons of radioactive and hazardous waste are stored in 177 underground storage tanks at the U.S. Department of Energy’s (DOE’s) Hanford Site in southeastern Washington State. The Hanford Tank Waste Treatment and Immobilization Plant (WTP) is being constructed to treat the wastes and immobilize them in a glass waste form. The WTP includes a pretreatment facility to separate the wastes into a small volume of high-level waste (HLW) containing most of the radioactivity and a larger volume of low-activity waste (LAW) containing most of the nonradioactive chemicals. The HLW will be converted to glass in the HLW vitrification facility for ultimate disposal at an offsite federal repository. At least a portion (~35%) of the LAW will be converted to glass in the LAW vitrification facility and will be disposed of onsite at the Integrated Disposal Facility (IDF). The pretreatment and HLW vitrification facilities will have the capacity to treat and immobilize the wastes destined for each facility. However, a second facility will be needed for the expected volume of additional LAW requiring immobilization. A cementitious waste form known as Cast Stone is being considered to provide the required additional LAW immobilization capacity. The Cast Stone waste …
Date:
March 27, 2013
Creator:
Russell, Renee L.; Westsik, Joseph H.; Swanberg, David J.; Eibling, Russell E.; Cozzi, Alex; Lindberg, Michael J. et al.
Object Type:
Report
System:
The UNT Digital Library
Development of CCD cameras for soft X-ray imaging at the National Ignition Facility
None
Date:
August 27, 2013
Creator:
Teruya, A T; Palmer, N E; Schneider, M B; Bell, P M; Sims, G; Toerne, K et al.
Object Type:
Article
System:
The UNT Digital Library
SAVANNAH RIVER SITE'S H-CANYON FACILITY: RECOVERY AND DOWN BLEND URANIUM FOR BENEFICIAL USE
For over fifty years, the H Canyon facility at the Savannah River Site (SRS) has performed remotely operated radiochemical separations of irradiated targets to produce materials for national defense. Although the materials production mission has ended, the facility continues to play an important role in the stabilization and safe disposition of proliferable nuclear materials. As part of the US HEU Disposition Program, SRS has been down blending off-specification (off-spec) HEU to produce LEU since 2003. Off-spec HEU contains fission products not amenable to meeting the American Society for Testing and Material (ASTM) commercial fuel standards prior to purification. This down blended HEU material produced 301 MT of ~5% enriched LEU which has been fabricated into light water reactor fuel being utilized in Tennessee Valley Authority (TVA) reactors in Tennessee and Alabama producing economic power. There is still in excess of ~10 MT of off-spec HEU throughout the DOE complex or future foreign and domestic research reactor returns that could be recovered and down blended for beneficial use as either ~5% enriched LEU, or for use in subsequent LEU reactors requiring ~19.75% enriched LEU fuel.
Date:
May 27, 2013
Creator:
Magoulas, V.
Object Type:
Article
System:
The UNT Digital Library
Solvent hold tank sample results for MCU-13-143, MCU-13-144, MCU-13-145, MCU-13-146, MCU-13-147 AND MCU-13-148: quarterly sample from January 2013
Savannah River National Laboratory (SRNL) analyzed solvent samples from Modular Caustic-Side Solvent Extraction Unit (MCU) in support of continuing operations. A quarterly analysis of the solvent is required to maintain solvent composition within specifications. Analytical results of the analyses of Solvent Hold Tank (SHT) samples MCU-13-143, MCU-13-144, MCU-13-145, MCU-13-146, MCU-13-147 and MCU-13-148 received 29 January 2012 are reported. The results show that the solvent at MCU does not require an Isopar® L addition, but it will require addition of trioctylamine. SRNL also analyzed the SHT sample for {sup 137}Cs content and determined the measured value is within tolerance and the value has returned to levels observed in 2012.
Date:
March 27, 2013
Creator:
Fondeur, F. F. & Peters, T. B.
Object Type:
Report
System:
The UNT Digital Library
Improvised Nuclear Device Technical Basis CalEMA RNER Framework Supplement
None
Date:
June 27, 2013
Creator:
Stewart, D. L.; Buddemeier, B. R. & Valentine, J. E.
Object Type:
Report
System:
The UNT Digital Library
User Guide for the STAYSL PNNL Suite of Software Tools
The STAYSL PNNL software suite provides a set of tools for working with neutron activation rates measured in a nuclear fission reactor, an accelerator-based neutron source, or any neutron field to determine the neutron flux spectrum through a generalized least-squares approach. This process is referred to as neutron spectral adjustment since the preferred approach is to use measured data to adjust neutron spectra provided by neutron physics calculations. The input data consist of the reaction rates based on measured activities, an initial estimate of the neutron flux spectrum, neutron activation cross sections and their associated uncertainties (covariances), and relevant correction factors. The output consists of the adjusted neutron flux spectrum and associated covariance matrix, which is useful for neutron dosimetry and radiation damage calculations.
Date:
February 27, 2013
Creator:
Greenwood, Lawrence R. & Johnson, Christian D.
Object Type:
Report
System:
The UNT Digital Library
Navier-Stokes Solvers and Generalizations for Reacting Flow Problems
This is an overview of our accomplishments during the final term of this grant (1 September 2008 -- 30 June 2012). These fall mainly into three categories: fast algorithms for linear eigenvalue problems; solution algorithms and modeling methods for partial differential equations with uncertain coefficients; and preconditioning methods and solvers for models of computational fluid dynamics (CFD).
Date:
January 27, 2013
Creator:
Elman, Howard C
Object Type:
Report
System:
The UNT Digital Library
The Greensheet (Dallas, Tex.), Vol. 36, No. 358, Ed. 1 Wednesday, March 27, 2013
Free weekly newspaper that includes business and classified advertising.
Date:
March 27, 2013
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 44, No. 53, Ed. 1 Wednesday, February 27, 2013
Free weekly newspaper that includes business and classified advertising.
Date:
February 27, 2013
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Dallas, Tex.), Vol. 36, No. 330, Ed. 1 Wednesday, February 27, 2013
Free weekly newspaper that includes business and classified advertising.
Date:
February 27, 2013
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 44, No. 101, Ed. 1 Wednesday, March 27, 2013
Free weekly newspaper that includes business and classified advertising.
Date:
March 27, 2013
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Light-Front Quantum Chromodynamics: A framework for the analysis of hadron physics
None
Date:
September 27, 2013
Creator:
Bakker, B. L. G.; Bassetto, A.; Brodsky, S. J.; Broniowski, W.; Dalley, S.; Frederico, T. et al.
Object Type:
Article
System:
The UNT Digital Library
Using comprehensive two-dimensional gas chromatography to explore the geochemistry of the Santa Barbara oil seeps
The development of comprehensive two-dimensional gas chromatography (GC x GC) has expanded the analytical window for studying complex mixtures like oil. Compared to traditional gas chromatography, this technology separates and resolves at least an order of magnitude more compounds, has a much larger signal to noise ratio, and sorts compounds based on their chemical class; hence, providing highly refined inventories of petroleum hydrocarbons in geochemical samples that was previously unattainable. In addition to the increased resolution afforded by GC x GC, the resulting chromatograms have been used to estimate the liquid vapor pressures, aqueous solubilities, octanol-water partition coefficients, and vaporization enthalpies of petroleum hydrocarbons. With these relationships, powerful and incisive analyses of phase-transfer processes affecting petroleum hydrocarbon mixtures in the environment are available. For example, GC x GC retention data has been used to quantitatively deconvolve the effects of phase transfer processes such as water washing and evaporation. In short, the positive attributes of GC x GC-analysis have led to a methodology that has revolutionized the analysis of petroleum hydrocarbons. Overall, this research has opened numerous fields of study on the biogeochemical "genetics" (referred to as petroleomics) of petroleum samples in both subsurface and surface environments. Furthermore, these new findings …
Date:
March 27, 2013
Creator:
Reddy, Christopher & Nelson, Robert
Object Type:
Report
System:
The UNT Digital Library
Self-Assembling Sup-porosity: The Effect On Fluid Flow And Seismic Wave Propagation
Fractures and joints in the field often contain debris within the void spaces. Debris originates from many different mechanisms: organic and/or inorganic chemical reactions/mineralization, sediment transport, formation of a fracture, mechanical weathering or combinations of these processes. In many cases, the presence of debris forms a âsub-porosityâ within the fracture void space. This sub-porosity often is composed of material that differs from the fracture walls in mineralogy and morphology. The âsub-porosityâ may partially fill voids that are on the order of hundreds of microns and thereby reduce the local porosity to lengths scales on the order of sub-microns to tens of microns. It is quite clear that a sub-porosity affects fracture porosity, permeability and storativity. What is not known is how the existence/formation of a sub-porosity affects seismic wave propagation and consequently our ability to probe changes in the subsurface caused by the formation or alteration of a sub-porosity. If seismic techniques are to be developed to monitor the injection and containment of phases in sequestration reservoirs or the propping of hydraulically induced fracture to enhance oil & gas production, it is important to understand how a sub-porosity within a fracture affects macroscopic seismic and hydraulic measurements. A sub-porosity will …
Date:
April 27, 2013
Creator:
Pyrak-Nolte, Laura J.
Object Type:
Report
System:
The UNT Digital Library
Nano Structured Activated Carbon for Hydrogen Storge
Development of a nanostructured synthetic carbons materials that have been synthesized by thermal-decomposition of aromatic rich polyether such as poly(ether ether ketone) (PEEK) is reported. These polymers based nanostructured carbons efficacious for gas adsorption and storage and have Brunauer-Emmett-Teller (BET) surface area of more than 3000 m2/g, and with average pore diameter of < 2nm. Surface-area, pore characteristics, and other critical variables for selecting porous materials of high gas adsorption capacities are presented. Analysis of the fragments evolved under various carbonization temperatures, and the correlation between the activation and carbonization temperatures provides a mechanistic perspective of the pore evolution during activation. Correlations between gas (N2 and H2) adsorption capacity and porous texture of the materials have been established. The materials possess excellent hydrogen storage properties, with hydrogen storage capacity up to 7.4 wt% (gravimetric) and ~ 45 g H2 L-1 (volumetric) at -196oC and 6.0 MPa.
Date:
February 27, 2013
Creator:
Cabasso, Israel & Yuan, Youxin
Object Type:
Text
System:
The UNT Digital Library