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Fiscal Year 2002
3
Winter Fuels Report
2
ARM Facilities Newsletter
1
Ames Laboratory Reports
1
Bench-Scale Co-Processing Quarterly Report
1
Carbon Sequestration on Surface Mine Lands Quarterly Report
1
Direct FuelCell/Turbine Power Plant Annual Report
1
Fiscal Year 1998
1
Fiscal Year 2000
1
Fiscal Year 2001
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3,257 Matching Results
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Thermal-envelop stone house, solar. Final technical report
The purpose of this project is to create a comfortable, low-cost heating system for a single-family house, without dependence on non-renewable energy sources. I have attempted to combine a simple solar air-heating collector with the thermal envelop concept (for thermal air circulation) and massive interior stone walls for heat storage. All building materials, with the exception of the solar glazing material and certain other solar components, are inexpensive and locally produced. Examples are: rough-cut hardwood lumber, sandstone (free for the gathering), galvanized roofing for absorberplate, concrete, concrete block, and cellulose insulation. The collector has operated with a relatively high degree of efficiency, though three 0.6 amp duct fans had to be installed in order to increase air circulation. The interior stonework has provided more than adequate heat storage, along with even heat radiation throughout cloudy periods. My main problem has been heat loss around the foundation.
Date:
May 19, 1982
Creator:
Avery, S. C.
Object Type:
Report
System:
The UNT Digital Library
Proceedings of the twenty-third WANTO meeting: a workshop to discuss policies and practices used to assure quality NDE operations
Ten papers were presented at the meeting. A separate abstract was prepared for each paper. (LCL)
Date:
November 19, 1981
Creator:
Baxter, G.R. (comp.)
Object Type:
Article
System:
The UNT Digital Library
2006 Pantex Plant Annual Illness and Injury Surveillance Report
The U.S. Department of Energy’s (DOE) commitment to assuring the health and safety of its workers includes the conduct of illness and injury surveillance activities that provide an early warning system to detect health problems among workers. The Illness and Injury Surveillance Program monitors illnesses and health conditions that result in an absence, occupational injuries and illnesses, and disabilities and deaths among current workers.
Date:
May 19, 2008
Creator:
United States. Department of Energy. Office of Health, Safety, and Security.
Object Type:
Report
System:
The UNT Digital Library
New York Nano-Bio Molecular Information Technology (NYNBIT) Incubator
This project presents the outcome of an effort made by a consortium of six universities in the State of New York to develop a Center for Advanced technology (CAT) in the emerging field of Nano-Bio-Molecular Information Technology. The effort consists of activities such as organization of the NYNBIT incubator, collaborative research projects, development of courses, an educational program for high schools, and commercial start-up programs.
Date:
December 19, 2008
Creator:
Das, Digendra K
Object Type:
Report
System:
The UNT Digital Library
Nonlinear Statistical Signal Processing: A Particle Filtering Approach
A introduction to particle filtering is discussed starting with an overview of Bayesian inference from batch to sequential processors. Once the evolving Bayesian paradigm is established, simulation-based methods using sampling theory and Monte Carlo realizations are discussed. Here the usual limitations of nonlinear approximations and non-gaussian processes prevalent in classical nonlinear processing algorithms (e.g. Kalman filters) are no longer a restriction to perform Bayesian inference. It is shown how the underlying hidden or state variables are easily assimilated into this Bayesian construct. Importance sampling methods are then discussed and shown how they can be extended to sequential solutions implemented using Markovian state-space models as a natural evolution. With this in mind, the idea of a particle filter, which is a discrete representation of a probability distribution, is developed and shown how it can be implemented using sequential importance sampling/resampling methods. Finally, an application is briefly discussed comparing the performance of the particle filter designs with classical nonlinear filter implementations.
Date:
September 19, 2007
Creator:
Candy, J
Object Type:
Article
System:
The UNT Digital Library
Nb3SN Magnet Development for LHC Luminosity Upgrade
None
Date:
May 19, 2008
Creator:
Wanderer, P.
Object Type:
Article
System:
The UNT Digital Library
MEMS adaptive optics for the Gemini Planet Imager: control methods and validation
None
Date:
December 19, 2007
Creator:
Poyneer, L A & Dillon, D
Object Type:
Article
System:
The UNT Digital Library
Thermo-Mechanical Processing Parameters for the INCONEL ALLOY 740
In 2000, a Cooperative Research and Development Agreement (CRADA) was undertaken between the Oak Ridge National Laboratory (ORNL) and the Special Metals Corporation (SMC) to determine the mechanical property response of the IN740 alloy to help establish thermo-mechanical processing parameters for the use of this alloy in supercritical and ultra-critical boiler tubes with the potential for other end uses. SMC had developed an alloy, commercially known as INCONEL alloy 740, which exhibited various beneficial physical, mechanical, and chemical properties. As part of SMC's on-going efforts to optimize this alloy for targeted boiler applications there was a need to develop an understanding of the thermo-mechanical response of the material, characterize the resulting microstructure from this processing, and possibly, utilize models to develop the appropriate processing scheme for this product.
Date:
November 19, 2007
Creator:
Ludtka, G.M. & Smith, G.
Object Type:
Report
System:
The UNT Digital Library
Linear Multifrequency-Grey Acceleration Recast for Preconditioned Krylov Iterations
None
Date:
March 19, 2007
Creator:
Morel, J E; Yang, T B & Warsa, J S
Object Type:
Article
System:
The UNT Digital Library
Long-term Stability of Biogeochemically Reduced U and Cr in Contaminated Sediments
The general goal of this report is to diminish concentrations of metals/radionuclide in groundwaters of contaminated sites to below MCL values through reduction to lower solubility species.
Date:
April 19, 2007
Creator:
Tetsu Tokunaga, Jiamin Wan, Yongman Kim, Terry Hazen, Eoin Brodie, Zuoping Zheng, Jackie Pena
Object Type:
Presentation
System:
The UNT Digital Library
Kinetic Controls on the Desorption/Dissolution of Sorbed U(VI) and Their Influence on Reactive Transport
None
Date:
April 19, 2007
Creator:
Zachara, J. M.; Liu, C.; Qafoku, N.; McKinley, J. P.; Davis, J. A.; Stoliker, D. et al.
Object Type:
Poster
System:
The UNT Digital Library
Development of Modeling Methods and Tools for Predicting Coupled Reactive Transport Processes in Porous Media at Multiple Scales
None
Date:
April 19, 2007
Creator:
Kanel, S. R.; Loganathan, V. A.; Jeppu, G.; Kumar, A.; Srinivasan, V.; Radu, T. et al.
Object Type:
Poster
System:
The UNT Digital Library
Mechanistically-Based Field-Scale Models of Uranium Biogeochemistry from Upscaling Pore-Scale Experiments and Models
Effective environmental management of DOE sites requires reliable prediction of reactive transport phenomena. A central issue in prediction of subsurface reactive transport is the impact of multiscale physical, chemical, and biological heterogeneity. Heterogeneity manifests itself through incomplete mixing of reactants at scales below those at which concentrations are explicitly defined (i.e., the numerical grid scale). This results in a mismatch between simulated reaction processes (formulated in terms of average concentrations) and actual processes (controlled by local concentrations). At the field scale, this results in apparent scale-dependence of model parameters and inability to utilize laboratory parameters in field models. Accordingly, most field modeling efforts are restricted to empirical estimation of model parameters by fitting to field observations, which renders extrapolation of model predictions beyond fitted conditions unreliable. The objective of this project is to develop a theoretical and computational framework for (1) connecting models of coupled reactive transport from pore-scale processes to field-scale bioremediation through a hierarchy of models that maintain crucial information from the smaller scales at the larger scales; and (2) quantifying the uncertainty that is introduced by both the upscaling process and uncertainty in physical parameters. One of the challenges of addressing scale-dependent effects of coupled processes in …
Date:
April 19, 2007
Creator:
Scheibe, Tim; Tartakovsky, Alexandre; Wood, Brian & Seymour, Joe
Object Type:
Poster
System:
The UNT Digital Library
Impacts of Climate Variability on the California Current Ecosystem and Pacific Salmon Survival: Linkages, Ocean Condition Indicators, Forecasting, and Management Perspectives
None
Date:
May 19, 2008
Creator:
Casillas, Edmundo & Peterson, William T.
Object Type:
Poster
System:
The UNT Digital Library
Applying EMSL Capabilities to Biogeochemistry and Environmental Research
The Environmental Molecular Sciences laboratory (EMSL) is a national scientific user facility operated by the Pacific Northwest National Laboratory (PNNL) for the U.S. Department of Energy's Office of Biological and Environmental Research. Located in Richland, Washington, EMSL offers researchers a comprehensive array of cutting-edge capabilities unmatched anywhere else in the world and access to the expertise of over 300 resident users--all at one location. EMSL's resources are available on a peer-reviewed proposal basis and are offered at no cost if research results are shared in the open literature. Researchers are encouraged to submit a proposal centered around one of EMSL's four Science Themes, which represent growing areas of research: (1) Geochemistry/Biogeochemistry and Subsurface Science; (2) Atmospheric Aerosol Chemistry; (3) Biological Interactions and Dynamics; and (4) Science of Interfacial Phenomena. To learn more about EMSL, visit www.emsl.pnl.gov.
Date:
April 19, 2007
Creator:
Felmy, Andy
Object Type:
Poster
System:
The UNT Digital Library
Hanford 300 Area IFC Breakout Session: Multi-Scale Mass Transfer Processes Controlling Natural Attenuation and Engineered Remediation: An IFC Focused on Hanford’s 300 Area Uranium Plume
None
Date:
April 19, 2007
Creator:
Zachara, John M.
Object Type:
Presentation
System:
The UNT Digital Library
Speckle Noise Attenuation in Coronagraphy and High-Contrast Imaging
None
Date:
September 19, 2007
Creator:
Marois, C
Object Type:
Article
System:
The UNT Digital Library
Scale Dependence of Biogeochemical Reaction Rates: Experimental and Modeling Approaches
None
Date:
April 19, 2007
Creator:
Steefel, Carl I.; Li, Li & Yang, Li
Object Type:
Presentation
System:
The UNT Digital Library
Nitrogen 12
N{sup 12} is shown to have a half life of 12.5 {+-} 1 milliseconds, and a positron upper limit of 16.6 {+-} 0.2 Mev. It is produced by the reaction C{sup 12}(p,n)N{sup 12}, and has a threshold proton energy of 20.0 Mev. This indicates that N{sup 12} is within about 200 Kev of being unstable against proton emission. The mass of N{sup 12} is 12.0228 {+-} 0.00015, and the beta transition is allowed.
Date:
January 19, 1949
Creator:
Alvarez, Luis W.
Object Type:
Report
System:
The UNT Digital Library
Responses of Desulfovibrio vulgaris to Physiological Constraints Relevant to Bioremediation in the Field
None
Date:
April 19, 2007
Creator:
Fields, Matthew W.
Object Type:
Presentation
System:
The UNT Digital Library
STRANGENESS PRODUCTION AS A FUNCTION OF SYSTEM SIZE AND ENERGY OF RHIC.
In this paper we report on strangeness measurements in p+p, Au+Au and Cu+Cu collisions at different energies in the STAR detector at RHIC. We will focus on two momentum regions in particular: Firstly we look at strangeness enhancement in A+A collisions with respect to p+p. These yields are dominated by low transverse momentum. We compare the enhancements from Au+Au and Cu+Cu data at {radical}s{sub NN} = 200 GeV with Pb+Pb data at {radical}s{sub NN} = 17.2 GeV and find that the enhancement does not scale with N{sub part} as expected, but rather scales with N{sub part}{sup 1/3}, where N{sub part} represents the number of participants; We then examine {Lambda}/K{sub S}{sup 0} ratios at intermediate transverse momentum in both Au+Au and Cu+Cu data where we find a greater enhancement in Cu+Cu compared to Au+Au data when we compare integrated ratios between 1.5 < p{sub T} < 3.5 GeV/c.
Date:
July 19, 2007
Creator:
LAMONT,M.
Object Type:
Article
System:
The UNT Digital Library
Mechanism of Bacterial Uranium and Technetium Reduction
None
Date:
April 19, 2007
Creator:
DiChristina, Thomas
Object Type:
Article
System:
The UNT Digital Library
LCLS soft x-ray imager mirrors and their performance
Soft X-ray imager mirrors have been designed, calibrated and fabricated at Lawrence Livermore National Laboratory and characterized at the Advanced Light Source for their performance between 200 and 1300 eV. The mirrors are coated with a multilayer coating consisting of 70 bilayers of W/ SiC. The mirrors are to reflect at 22.5 deg from grazing angle at 1.50 nm wavelength and the width of the reflectivity peak should be at least 1.3%. Also, the mirrors should be non-reflective elsewhere. Our multilayer design was optimized to satisfy these requirements. The coating is very challenging since the individual layer thicknesses need to be less than 1 nm thick and reproducibility from layer to layer is crucial. To minimize the second harmonic peak we designed a multilayer with {Gamma} = 0.5 (W and SiC layer thicknesses are the same). This way we end up with a mirror that has only the 1st and 3rd harmonic peak as shown in Figure 1. To suppress reflectivity outside the first peak we used our novel approach, an antireflective coating. Modeling predicted substantial reduction in reflectivity, especially for lower energies as shown in Figure 1. The experimental results of the soft x-ray imager mirror as measured at …
Date:
October 19, 2007
Creator:
Bajt, S
Object Type:
Report
System:
The UNT Digital Library
Electron Beam Lifetime in SPEAR3: Measurement and Simulation
In this paper we report on electron beam lifetime measurements as a function of scraper position, RF voltage and bunch fill pattern in SPEAR3. We then outline development of an empirical, macroscopic model using the beam-loss rate equation. By identifying the dependence of loss coefficients on accelerator and beam parameters, a numerically-integrating simulator can be constructed to compute beam decay with time. In a companion paper, the simulator is used to train a parametric, non-linear dynamics model for the system [1].
Date:
December 19, 2007
Creator:
Corbett, J.; Huang, X.; Lee, M. & Lui, P.
Object Type:
Article
System:
The UNT Digital Library