Serial/Series Title
Hanford Laboratories Operation Monthly Activities Report
37
Evaluation of Roof Bolting Requirements Based on In-Mine Bolter Drilling Progress Report
16
BEETIT Program
12
Irradiation Processing Department Monthly Report
11
ANL Reactor Development Program Progress Report
10
Low-Cost Solar Array Project
6
A Development of On-Line Temperature Measurement Instrumentation for Gasification Process Control Progress Report
4
Fiscal Year 2003
4
Fiscal Year 2004
3
Winter Fuels Report
3
54 More
Country
States
Decade
Year
Month
Day
Language
6,421 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
6,421
next
Trace Simulation of Bwr Anticipated Transient Without Scram Leading to Emergency Depressurization
N/A
Date:
June 15, 2014
Creator:
Cheng, L. Y.; J., Beak; Cuadra, A.; Aronson, A.; Diamond, D. & Yarsky, P. (with the NRC)
Object Type:
Article
System:
The UNT Digital Library
ANL Critical Assembly Covariance Matrix Generation
This report discusses the generation of a covariance matrix for selected critical assemblies that were carried out by Argonne National Laboratory (ANL) using four critical facilities - all of which are now decommissioned.
Date:
January 15, 2014
Creator:
McKnight, R. D. & Grimm, K. N. (Nuclear Engineering Division)
Object Type:
Report
System:
The UNT Digital Library
Enzo: An Adaptive Mesh Refinement Code for Astrophysics
None
Date:
January 15, 2014
Creator:
Bryan, Greg L.; Norman, Michael L.; O'Shea, Brian W.; Abel, Tom; Wise, John H.; Turk, Matthew J. et al.
Object Type:
Article
System:
The UNT Digital Library
KONGMING: Performance Prediction in the Cloud via Multidimensional Interference Surrogates
None
Date:
January 15, 2014
Creator:
Bowen, Z; Bronevetsky, G; Casas-Guix, M & Bagchi, S
Object Type:
Report
System:
The UNT Digital Library
Machine Based Optimization Using Genetic Algorithms in a Storage Ring
None
Date:
January 15, 2014
Creator:
Tian, K.; Safranek, J. & Yan, Y.
Object Type:
Article
System:
The UNT Digital Library
Investigation of WO{sub 3}-Based H{sub 2}S Sensor Materials for Coal Gasification Systems
The aim of this project was to engineer the materials studied to enhance the so-called 3S criteria: Sensitivity, Selectivity, and Stability, by using the advantage of controlling structure and properties at nanometer dimensions. It targeted sensor materials that are able to detect poisonous gases resulting from coal-gasification processes, especially sulfur containing emissions. Research findings based on this award demonstrate that doping tungsten oxide (WO{sub 3}) with a small amount of Ti (e.g. 5% in our work) results in a new material that has a higher structural symmetry (e.g. tetragonal morphology) as well as narrower crystalline particle size distribution. As high quality materials with excellent ordered structure and narrower particle-size distributions (which can also withstand high-temperature technological environments such as those encountered in furnaces and coal gasification systems without their structure being affected by phase transformations) are needed for developing new, more sensitive sensor materials, W-Ti-O thin films grown by RF sputtering are valuable candidates for such roles. It is well known that pure WO{sub 3} will change its structure at elevated temperatures. Our work indicates that, Ti doping not only increases the stability of the resultant material by promoting structural phase modifications, but also increases its sensitivity by increasing the …
Date:
December 15, 2013
Creator:
Manciu, Felicia & Ramana, Chintalapalle
Object Type:
Report
System:
The UNT Digital Library
Final report for DOE Grant No. DE-SC0006609 - Persistence of Microbially Facilitated Calcite Precipitation as an in situ Treatment for Strontium-90
Subsurface radionuclide and metal contaminants throughout the U.S. Department of Energy (DOE) complex pose one of DOE?s greatest challenges for long-term stewardship. One promising stabilization mechanism for divalent ions, such as the short-lived radionuclide Sr-90, is co-precipitation in calcite. We have previously found that nutrient addition can stimulate microbial ureolytic activity, that this activity accelerates calcite precipitation and co-precipitation of Sr, and that higher calcite precipitation rates can result in increased Sr partitioning. We have conducted integrated field, laboratory, and computational research to evaluate the relationships between ureolysis and calcite precipitation rates and trace metal partitioning under environmentally relevant conditions, and investigated the coupling between flow/flux manipulations and precipitate distribution. A field experimental campaign conducted at the Integrated Field Research Challenge (IFRC) site located at Rifle, CO was based on a continuous recirculation design; water extracted from a down-gradient well was amended with urea and molasses (a carbon and electron donor) and re-injected into an up-gradient well. The goal of the recirculation design and simultaneous injection of urea and molasses was to uniformly accelerate the hydrolysis of urea and calcite precipitation over the entire inter-wellbore zone. The urea-molasses recirculation phase lasted, with brief interruptions for geophysical surveys, for 12 days …
Date:
November 15, 2013
Creator:
Smith, Robert W. & Fujita, Yoshiko
Object Type:
Report
System:
The UNT Digital Library
UV Excited Photoacoustic Raman
None
Date:
November 15, 2013
Creator:
Carter, J; Chambers, D; Steele, P; Haugen, P & Heller, D
Object Type:
Report
System:
The UNT Digital Library
Alternatives to the Maroni Process for Tritium Recovery in Fusion Reactors: Avoiding Volatile Hydrogen Fluoride and High-Temperature High-Speed Rotating Machinery
None
Date:
October 15, 2013
Creator:
Farmer, J.; El-Dasher, B.; Bandhauer, T.; Rubenchik, A.; Reyes, S.; Dunne, M. et al.
Object Type:
Report
System:
The UNT Digital Library
Architecture-Aware Algorithms for Scalable Performance and Resilience on Heterogeneous Architectures
The goal of the Extreme-scale Algorithms & Software Institute (EASI) is to close the �application-architecture performance gap� by exploring algorithms and runtime improvements that will enable key science applications to better exploit the architectural features of DOE extreme-scale systems. For the past year of the project, our efforts at the University of Tennessee have concentrated on, and made significant progress related to, the following high-level EASI goals: � Develop multi-precision and architecture-aware implementations of Krylov, Poisson, Helmholtz solvers, and dense factorizations for heterogeneous multi-core systems; � Explore new methods of algorithm resilience, and develop new algorithms with these capabilities; � Develop runtime support for adaptable algorithms that are dealing with resilience, scalability; � Distribute the new algorithms and runtime support through widely used software packages; � Establish a strong outreach program to disseminate results, interact with colleagues and train students and junior members of our community.
Date:
October 15, 2013
Creator:
Dongarra, Jack
Object Type:
Report
System:
The UNT Digital Library
Characterization Tests of a Stripline Beam Position Monitor for the CLIC Drive Beam
None
Date:
October 15, 2013
Creator:
Soby, L.; Nappa, J. M.; Tassan-Viol, J.; Vilalte, S.; Faus-Golfe, A.; Garcia-Garrigos, J. J. et al.
Object Type:
Article
System:
The UNT Digital Library
Dielectric Characterization and Microwave Interferometry in HMX-based Explosives
None
Date:
October 15, 2013
Creator:
Tringe, J. W.; Kane, R. J.; Lorenz, K. T.; Baluyot, E. V. & Vandersall, K. S.
Object Type:
Article
System:
The UNT Digital Library
Effect of Roughness on Emittance of Potassium Cesium Antimonide Photocathodes
None
Date:
October 15, 2013
Creator:
Vecchione, T.; Feng, J.; Wan, W.; Padmore, H. A.; Ben-Zvi, Ilan; Liang, X. et al.
Object Type:
Article
System:
The UNT Digital Library
Final Report: Large-Scale Optimization for Bayesian Inference in Complex Systems
The SAGUARO (Scalable Algorithms for Groundwater Uncertainty Analysis and Robust Optimiza- tion) Project focuses on the development of scalable numerical algorithms for large-scale Bayesian inversion in complex systems that capitalize on advances in large-scale simulation-based optimiza- tion and inversion methods. Our research is directed in three complementary areas: efficient approximations of the Hessian operator, reductions in complexity of forward simulations via stochastic spectral approximations and model reduction, and employing large-scale optimization concepts to accelerate sampling. Our efforts are integrated in the context of a challenging testbed problem that considers subsurface reacting flow and transport. The MIT component of the SAGUARO Project addresses the intractability of conventional sampling methods for large-scale statistical inverse problems by devising reduced-order models that are faithful to the full-order model over a wide range of parameter values; sampling then employs the reduced model rather than the full model, resulting in very large computational savings. Results indicate little effect on the computed posterior distribution. On the other hand, in the Texas-Georgia Tech component of the project, we retain the full-order model, but exploit inverse problem structure (adjoint-based gradients and partial Hessian information of the parameter-to- observation map) to implicitly extract lower dimensional information on the posterior distribution; …
Date:
October 15, 2013
Creator:
Ghattas, Omar
Object Type:
Report
System:
The UNT Digital Library
Future Automotive Aftertreatment Solutions: The 150°C Challenge Workshop Report
With future fuel economy standards enacted, the U.S. automotive manufacturers (OEMs) are committed to pursuing a variety of high risk/highly efficient stoichiometric and lean combustion strategies to achieve superior performance. In recognition of this need, the U.S. Department of Energy (DOE) has partnered with domestic automotive manufacturers through U.S. DRIVE to develop these advanced technologies. However, before these advancements can be introduced into the U.S. market, they must also be able to meet increasingly stringent emissions requirements. A significant roadblock to this implementation is the inability of current catalyst and aftertreatment technologies to provide the required activity at the much lower exhaust temperatures that will accompany highly efficient combustion processes and powertrain strategies. Therefore, the goal of this workshop and report is to create a U.S. DRIVE emission control roadmap that will identify new materials and aftertreatment approaches that offer the potential for 90% conversion of emissions at low temperature (150°C) and are consistent with highly efficient combustion technologies currently under investigation within U.S. DRIVE Advanced Combustion and Emission Control (ACEC) programs.
Date:
October 15, 2013
Creator:
Zammit, Michael; DiMaggio, Craig L.; Kim, Chang H.; Lambert, Christine; Muntean, George G.; Peden, Charles HF et al.
Object Type:
Report
System:
The UNT Digital Library
Integrated Genome-Based Studies of Shewanella Ecophysiology
This project had as its goals the understanding of the ecophysiology of the genus Shewanella using various genomics approaches. As opposed to other programs involving Shewanella, this one branched out into the various areas in which Shewanella cells are active, and included both basic and applied studies. All of the work was, to some extent, related to the ability of the bacteria to accomplish electron exchange between the cell and solid state electron acceptors and/or electron donors, a process we call Extracellular Electron Transport, or EET. The major accomplishments related to several different areas: Basic Science Studies: 1. Genetics and genomics of nitrate reduction, resulting in elucidation of atypical nitrate reduction systems in Shewanella oneidensis (MR-1)[2]. 2. Influence of bacterial strain and growth conditions on iron reduction, showing that rates of reduction, extents of reduction, and the formation of secondary minerals were different for different strains of Shewanella [3,4,9]. 3. Comparative genomics as a tool for comparing metabolic capacities of different Shewanella strains, and for predicting growth and metabolism [6,10,15]. In these studies, collaboration with ORNL, PNNL, and 4. Basic studies of electron transport in strain MR-1, both to poised electrodes, and via conductive nanowires [12,13]. This included the first …
Date:
October 15, 2013
Creator:
Nealson, Kenneth H.
Object Type:
Report
System:
The UNT Digital Library
Multiphysics Applications of ACE3P
None
Date:
October 15, 2013
Creator:
Lee, Ki H.; Ko, Kwok; Li, Zenghai; Ng, Cho-Kuen; Xiao, Liling; Cheng, G. et al.
Object Type:
Article
System:
The UNT Digital Library
Polarimetry at RHIC: RHIC polarized beam in Run 2011
N/A
Date:
October 15, 2013
Creator:
Zelenski, A.
Object Type:
Report
System:
The UNT Digital Library
Radionuclide Retention in Concrete Wasteforms - FY13
Assessing long-term performance of Category 3 waste cement grouts for radionuclide encasement requires knowledge of the radionuclide-cement interactions and mechanisms of retention (i.e., sorption or precipitation); the mechanism of contaminant release; the significance of contaminant release pathways; how wasteform performance is affected by the full range of environmental conditions within the disposal facility; the process of wasteform aging under conditions that are representative of processes occurring in response to changing environmental conditions within the disposal facility; the effect of wasteform aging on chemical, physical, and radiological properties; and the associated impact on contaminant release. This knowledge will enable accurate prediction of radionuclide fate when the wasteforms come in contact with groundwater. Data collected throughout the course of this work will be used to quantify the efficacy of concrete wasteforms, similar to those used in the disposal of low-level waste and mixed low-level waste, for the immobilization of key radionuclides (i.e., uranium, technetium, and iodine). Data collected will also be used to quantify the physical and chemical properties of the concrete affecting radionuclide retention.
Date:
October 15, 2013
Creator:
Snyder, Michelle MV; Golovich, Elizabeth C.; Wellman, Dawn M.; Crum, Jarrod V.; Lapierre, Robert; Dage, Denomy C. et al.
Object Type:
Report
System:
The UNT Digital Library
Resistive Wall Heating of the Undulator in High Repetition Rate FELs
None
Date:
October 15, 2013
Creator:
Qiang, J.; Corlett, J.N.; Emma, P. & Wu, J.
Object Type:
Article
System:
The UNT Digital Library
Resonant Spin Depolarisation Measurements at the SPEAR3 Electron Storage Ring
None
Date:
October 15, 2013
Creator:
Wootton, K. P.; Boland, M. J.; Rassool, R. P.; Tan, Y.-R. E.; Corbett, W. J.; Donald, M. et al.
Object Type:
Article
System:
The UNT Digital Library
The RHIC polarized source upgrade
N/A
Date:
October 15, 2013
Creator:
A., Zelenski; Atoian, G.; Ritter, J.; Steski, D.; Davydenko, V.; Ivanov, A. et al.
Object Type:
Report
System:
The UNT Digital Library
Single Electron Dynamic of Microwave Undulator
None
Date:
October 15, 2013
Creator:
Chang, C.; Neilson, J.; Pellegrini, C.; Shumail, M. & Tantawi, S. G.
Object Type:
Article
System:
The UNT Digital Library
Time-resolved x-ray diffraction across water-ices VI/VII transformations using dynamic-DAC
None
Date:
October 15, 2013
Creator:
Chen, J. Y.; Kim, M.; Yoo, C. & Evans, W. J.
Object Type:
Article
System:
The UNT Digital Library