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ANL Critical Assembly Covariance Matrix Generation

Description: 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)
Partner: UNT Libraries Government Documents Department
open access

Investigation of WO{sub 3}-Based H{sub 2}S Sensor Materials for Coal Gasification Systems

Description: 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… more
Date: December 15, 2013
Creator: Manciu, Felicia & Ramana, Chintalapalle
Partner: UNT Libraries Government Documents Department
open access

Final report for DOE Grant No. DE-SC0006609 - Persistence of Microbially Facilitated Calcite Precipitation as an in situ Treatment for Strontium-90

Description: 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 pr… more
Date: November 15, 2013
Creator: Smith, Robert W. & Fujita, Yoshiko
Partner: UNT Libraries Government Documents Department
open access

Architecture-Aware Algorithms for Scalable Performance and Resilience on Heterogeneous Architectures

Description: 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 a… more
Date: October 15, 2013
Creator: Dongarra, Jack
Partner: UNT Libraries Government Documents Department
open access

Final Report: Large-Scale Optimization for Bayesian Inference in Complex Systems

Description: 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 appro… more
Date: October 15, 2013
Creator: Ghattas, Omar
Partner: UNT Libraries Government Documents Department
open access

Future Automotive Aftertreatment Solutions: The 150°C Challenge Workshop Report

Description: 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… more
Date: October 15, 2013
Creator: Zammit, Michael; DiMaggio, Craig L.; Kim, Chang H.; Lambert, Christine; Muntean, George G.; Peden, Charles HF et al.
Partner: UNT Libraries Government Documents Department
open access

Integrated Genome-Based Studies of Shewanella Ecophysiology

Description: 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 proces… more
Date: October 15, 2013
Creator: Nealson, Kenneth H.
Partner: UNT Libraries Government Documents Department
open access

Radionuclide Retention in Concrete Wasteforms - FY13

Description: 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 proces… more
Date: October 15, 2013
Creator: Snyder, Michelle MV; Golovich, Elizabeth C.; Wellman, Dawn M.; Crum, Jarrod V.; Lapierre, Robert; Dage, Denomy C. et al.
Partner: UNT Libraries Government Documents Department
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