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Conducting Polymer-Inorganic Nanoparticle (CPIN) Nanoarrays for Battery Applications - Final Technical Report

Description: Our objective was to develop new, self-assembling conducting polymer-inorganic nanoparticle nanoarrays (CPIN nanoarrays) comprised of nanoparticles of inorganic Li+ insertion compounds that are “wired” together with oligomeric chains of derivatives of polythiophene. Using these nanoarrays, we developed an understanding of the relationship between structure and electrochemical function for nanostructured materials. Such nanoarrays are expected to have extremely high specific energy and specific … more
Date: June 27, 2006
Creator: Buttry, Daniel A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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SLUDGE BATCH 4 SIMULANT FLOWSHEET STUDIES: PHASE II RESULTS

Description: The Defense Waste Processing Facility (DWPF) will transition from Sludge Batch 3 (SB3) processing to Sludge Batch 4 (SB4) processing in early fiscal year 2007. Tests were conducted using non-radioactive simulants of the expected SB4 composition to determine the impact of varying the acid stoichiometry during the Sludge Receipt and Adjustment Tank (SRAT) process. The work was conducted to meet the Technical Task Request (TTR) HLW/DWPF/TTR-2004-0031 and followed the guidelines of a Task Technical… more
Date: September 12, 2006
Creator: Stone, M & David Best, D
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of Structure on the Storage Characteristics of ManganeseOxide Electrode Materials

Description: Eleven types of manganese-containing electrode materialswere subjected to long-term storage at 55oC in 1M LiPF6 ethylenecarbonate/dimethyl carbonate (EC/DMC) solutions. The amount of manganesedissolution observed depended upon the sample surface area, the averageMn oxidation state, the structure, and substitution levels of themanganese oxide. In some cases, structural changes such as solvateformation were exacerbated by the high temperature storage, andcontributed to capacity fading upon cyclin… more
Date: January 31, 2006
Creator: Park, Yong Joon & Doeff, Marca M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Functionally Graded Cathodes for Solid Oxide Fuel Cells

Description: One primary suspected cause of long-term performance degradation of solid oxide fuels (SOFCs) is the accumulation of chromium (Cr) species at or near the cathode/electrolyte interface due to reactive Cr molecules originating from Cr-containing components (such as the interconnect) in fuel cell stacks. To date, considerable efforts have been devoted to the characterization of cathodes exposed to Cr sources; however, little progress has been made because a detailed understanding of the chemistry … more
Date: December 31, 2006
Creator: Abernathy, Harry & Liu, Meilin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Discovery of Unusual Minerals in Paleolithic Black Pigments from Lascaux (France) and Ekain (Spain)

Description: Analyses of archaeological materials aim to rediscover the know-how of Prehistoric people by determining the nature of the painting matter, its preparation mode, and the geographic origin of its raw materials. This study deals with identification of manganese oxides in black pigments by micro-XANES (X-ray absorption near-edge structure) based on previous TEM (transmission electron microscopy) studies. Complex mixtures of the manganese oxides studied are present in some of mankind's oldest known… more
Date: December 13, 2006
Creator: Chalmin, E.; Farges, F.; Vignaud, C.; Susini, J.; Menu, M. & Brown, G. E., Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development and Evaluation of Nanoscale Sorbents for Mercury Capture from Warm Fuel Gas

Description: Several nanocrystalline sorbents were synthesized by GTI's subcontractor NanoScale Materials, Inc. (NanoScale) and submitted to GTI for evaluation. A total of seventeen sorbent formulations were synthesized and characterized by NanoScale, including four existing sorbent formulations (NanoActive{trademark} TiO{sub 2}, NanoActive CeO{sub 2}, NanoActive ZnO, and NanoActive CuO), three developmental nanocrystalline metal oxides (MnO{sub 2}, MoO{sub 3}, and Cr{sub 2}O{sub 3}), and ten supported form… more
Date: March 1, 2006
Creator: Jadhav, Raja A.; Meyer, Howard & Winecki, Slawomir
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Simultaneous Removal of NOx and Mercury in Low Temperature Selective Catalytic and Adsorptive Reactor

Description: The results of a 18-month investigation to advance the development of a novel Low Temperature Selective Catalytic and Adsorptive Reactor (LTSCAR), for the simultaneous removal of NO{sub x} and mercury (elemental and oxidized) from flue gases in a single unit operation located downstream of the particulate collectors, are reported. In the proposed LTSCAR, NO{sub x} removal is in a traditional SCR mode but at low temperature, and, uniquely, using carbon monoxide as a reductant. The concomitant ca… more
Date: March 31, 2006
Creator: Pinto, Neville G. & Smirniotis, Panagiotis G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Impact of Simulant Production Methods on SRAT Product

Description: The research and development programs in support of the Defense Waste Processing Facility (DWPF) and other high level waste vitrification processes require the use of both nonradioactive waste simulants and actual waste samples. The nonradioactive waste simulants have been used for laboratory testing, pilot-scale testing and full-scale integrated facility testing. Recent efforts have focused on matching the physical properties of actual sludge. These waste simulants were designed to reproduce t… more
Date: March 22, 2006
Creator: Eibling, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DOPING AND BOND LENGTH CONTRIBUTIONS TO Mn K-EDGE SHIFT IN La1-xSrxMnO3 AND THEIR CORRELATION WITH ELECTRICAL TRANSPORT BEHAVIOUR.

Description: The experimental Mn K-edge x-ray absorption spectra of La{sub 1-x}Sr{sub x}MnO{sub 3}, x = 0 - 0.7 are compared with the band structure calculations using spin polarized density functional theory. It is explicitly shown that there is a correspondence between the inflection point on the absorption edge and the center of gravity of the unoccupied Mn 4p-band. This correspondence has been used to separate the doping and size contributions to edge shift due to variation in number of electrons in val… more
Date: December 4, 2006
Creator: Pandey, S. K.; Khalid, S.; Bindu, R.; Kumar, A. & Pimpale, A. V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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YIELD STRESS REDUCTION OF DWPF MELTER FEED SLURRIES

Description: The Defense Waste Processing Facility (DWPF) at the Savannah River Site vitrifies High Level Waste for repository internment. The process consists of three major steps: waste pretreatment, vitrification, and canister decontamination/sealing. The HLW consists of insoluble metal hydroxides (primarily iron, aluminum, magnesium, manganese, and uranium) and soluble sodium salts (carbonate, hydroxide, nitrite, nitrate, sulfate). The pretreatment process acidifies the sludge with nitric and formic aci… more
Date: December 28, 2006
Creator: Stone, M & Michael02 Smith, M
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Final Report for Grant No. DE-FG02-01ER63220 "The Dynamics of Cellular Stress Responses in Deinococcus radiodurans"

Description: Bacteria belonging to the family Deinococcaceae are some of the most ionizing radiation (IR) resistant organisms yet discovered. Deinococcus radiodurans is obligate aerobic, capable of growth under chronic IR (60 Gy/hour) and relatively resistant to many DNA damaging conditions including exposure to desiccation, ultraviolet radiation and hydrogen peroxide. The genes and cellular pathways underlying the survival strategies of D. radiodurans have been under investigation for fifty years. In the l… more
Date: March 6, 2006
Creator: PI: Michael J. Daly, Ph.D., Uniformed Services University of the Health Sciences; Co-Investigators: James K. Fredrickson, Ph.D., Pacific Northwest National Laboratory; Richard D. Smith, Ph.D., Pacific Northwest National Laboratory; Eugene Koonin, Ph.D., National Center for Biotechnology Information; Jizhong Zhou, Ph.D. , Oak Ridge National Laboratory & Mary S. Lipton, Ph.D., Pacific Northwest National Laboratory
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

MOBILIZATION, POISONING, AND FILTRATION OF F-CANYON TANK 804 SLUDGE

Description: The Savannah River Site (SRS) Deactivation and Decommissioning (SDD) Organization is evaluating options to disposition the F-Canyon 800 series underground tanks (including removal of the sludge heels from these tanks) and requested assistance from Savannah River National Laboratory (SRNL) personnel to develop methods to effectively mobilize the sludge from these tanks (i.e., Tanks 804, 808, and 809). Because of the high plutonium content in Tank 804 (estimated to be as much as 1500 g), SDD need… more
Date: May 4, 2006
Creator: Poirier, M; Thomas Peters, T & Samuel Fink, S
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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