Sample records for tc tc tc

  1. GASIFICATION TEST RUN TC06

    SciTech Connect (OSTI)

    Southern Company Services, Inc.

    2003-08-01T23:59:59.000Z

    This report discusses test campaign TC06 of the Kellogg Brown & Root, Inc. (KBR) Transport Reactor train with a Siemens Westinghouse Power Corporation (Siemens Westinghouse) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The Transport Reactor is an advanced circulating fluidized-bed reactor designed to operate as either a combustor or a gasifier using a particulate control device (PCD). The Transport Reactor was operated as a pressurized gasifier during TC06. Test run TC06 was started on July 4, 2001, and completed on September 24, 2001, with an interruption in service between July 25, 2001, and August 19, 2001, due to a filter element failure in the PCD caused by abnormal operating conditions while tuning the main air compressor. The reactor temperature was varied between 1,725 and 1,825 F at pressures from 190 to 230 psig. In TC06, 1,214 hours of solid circulation and 1,025 hours of coal feed were attained with 797 hours of coal feed after the filter element failure. Both reactor and PCD operations were stable during the test run with a stable baseline pressure drop. Due to its length and stability, the TC06 test run provided valuable data necessary to analyze long-term reactor operations and to identify necessary modifications to improve equipment and process performance as well as progressing the goal of many thousands of hours of filter element exposure.

  2. Tc-99m Labeled carrier for imaging

    DOE Patents [OSTI]

    Henze, Eberhard (Santa Monica, CA)

    1984-01-01T23:59:59.000Z

    Novel radionuclide imaging agents, having particular application for lymphangiography are provided by non-covalently binding Tc-99m to a pharmaceutically acceptable cross-linked polysaccharide. Upon injection of the Tc-99m labeled polysaccharide into the blood stream, optimum contrast can be obtained within one hour.

  3. Insights into Stabilization of the 99TcVO Core for Synthesis of 99TcVO Compounds

    SciTech Connect (OSTI)

    McGregor, Donna; Burton-Pye, Benjamin P.; Lukens, Wayne W.; Howell, Robertha C.; Francesconi, Lynn C.

    2014-01-01T23:59:59.000Z

    Synthesis of technetium-99 (99Tc; t1/2: 2.1 105 years, max: 253 keV) materials is of importance in studies of the nuclear fuel cycle where Tc is a major fission product (6percent thermal yield from 235U and 239Pu), in understanding radioactive tank waste composition, and in identifying 99mTc compounds for nuclear medicine imaging. One of the most useful synthetic starting materials, (NBu4)TcOCl4, is susceptible to disproportionation in water to form TcO4 and TcIV species, especially TcO2 2H2O. This unwanted reaction is especially problematic when working with ligands bearing hard donor atoms, such as oxygen, where the stability with the soft TcV=O3+ core may be low. Polyoxometalates (POMs) are such ligands. They possess defect sites with four hard oxygen atoms and show low (ca. 108) stability constants with transition metals. Tc complexes of POMs are molecular-level models for Tc metal oxide solid-state materials and can provide information on coordination and redox environments of metal oxides that stabilize low-valent Tc. In order to synthesize pure Tc POM complexes [TcVO(1-P2W17O61)]7 (TcVO-1) and [TcVO(2-P2W17O61)]7 (TcVO-2) from (NBu4)TcOCl4, we have identified strategies that minimize formation of TcIV species and optimize the formation of pure TcV species. The parameters that we consider are the amount of ethylene glycol, which is employed as a transfer ligand to prevent hydrolysis of (NBu4)TcOCl4, and the precipitating agent. The TcIV species that contaminates the non-optimized syntheses is likely a TcIV -oxido-bridged dimer [TcIV-(-O)2-TcIV]. We also employ a novel procedure where the 2 ligand is photoactivated and reduced (in the presence of a sacrificial electron donor) to subsequently reduce TcVIIO4 to an isolatable TcVO-2 product that is remarkably free of TcIV.

  4. Iron Oxide Waste Form for Stabilizing 99Tc. | EMSL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    reduced 99Tc(IV) from oxidizing agents. These products were used to make monolithic pellets to quantify an effective diffusion coefficient for 99Tc from goethite waste form...

  5. Synthesis of trevorite to capture Tc

    SciTech Connect (OSTI)

    Tsui, Colin

    2011-09-02T23:59:59.000Z

    Spinel containing technetium can be used to prevent Tc volatilization during vitrification of radioactive waste. Spinel dissolves in glass at elevated temperatures. This study focuses on the synthesis of spinel and the retention of rhenium, a nonradioactive surrogate for Tc in the crystals. To produce trevorite, a nickel-iron spinel (NiFe2O4), Fe and Ni nitrates were mixed with alkali nitrates along with Al(OH)3 and heated to 500 to 800C. The trevorite content in samples (up to 40 mass%) was measured with x-ray diffraction. Viable samples were rerun with KReO4. Scanning electron microscopy-energy dispersive spectroscopy detected that Re became partly immobilized in spinel-forming crystals.

  6. Pretreatment of Tc-Containing Waste and Its Effect on Tc-99 Leaching From Grouts

    SciTech Connect (OSTI)

    Aloy, Albert; Kovarskaya, Elena N. [RosAtom, 'V.G. Khlopin Radium Institute' (KRI), 2-nd Murinsky str., 28, Saint Petersburg, 194021 (Russian Federation); Harbour, John R.; Langton, Christine A.; Holtzscheiter, E. William [Savannah River National Laboratory, Washington Savannah River Company, Aiken, SC 29808 (United States)

    2007-07-01T23:59:59.000Z

    A salt solution (doped with Tc-99), that simulates the salt waste stream to be processed at the Saltstone Production Facility, was immobilized in grout waste forms with and without (1) ground granulated blast furnace slag and (2) pretreatment with iron salts. The degree of immobilization of Tc-99 was measured through monolithic and crushed grout leaching tests. Although Fe (+2) was shown to be effective in reducing Tc-99 to the +4 state, the strong reducing nature of the blast furnace slag present in the grout formulation dominated the reduction of Tc-99 in the cured grouts. An effective diffusion coefficient of 4.75 x 10{sup -12} (Leach Index of 11.4) was measured using the ANSI/ANS-16.1 protocol. The leaching results show that, even in the presence of a concentrated salt solution, blast furnace slag can effectively reduce pertechnetate to the immobile +4 oxidation state. The measured diffusivity was introduced into a flow and transport model (PORFLOW) to calculate the release of Tc-99 from a Saltstone Vault as a function of hydraulic conductivity of the matrix. (authors)

  7. PRETREATMENT OF TC CONTAINING WASTE AND ITS EFFECT ON 99 TC LEACHING FROM GROUTS

    SciTech Connect (OSTI)

    Harbour, J

    2006-12-11T23:59:59.000Z

    A salt solution (doped with Tc-99), that simulates the salt waste stream to be processed at the Saltstone Production Facility, was immobilized in grout waste forms with and without (1) ground granulated blast furnace slag and (2) pretreatment with iron salts. The degree of immobilization of Tc-99 was measured through monolithic and crushed grout leaching tests. Although Fe (+2) was shown to be effective in reducing Tc-99 to the +4 state, the strong reducing nature of the blast furnace slag present in the grout formulation dominated the reduction of Tc-99 in the cured grouts. An effective diffusion coefficient of 4.75 x 10{sup -12} (Leach Index of 11.4) was measured using the ANSI/ANS-16.1 protocol. The leaching results show that, even in the presence of a concentrated salt solution, blast furnace slag can effectively reduce pertechnetate to the immobile +4 oxidation state. The measured diffusivity was introduced into a flow and transport model (PORFLOW) to calculate the release of Tc-99 from a Saltstone Vault as a function of hydraulic conductivity of the matrix.

  8. Minimal performances of high Tc wires for cost effective SMES compared with low Tc`s

    SciTech Connect (OSTI)

    Levillain, C.; Therond, P.G. [Electricite de France, Clamart (France). Direction des Etudes et Recherches] [Electricite de France, Clamart (France). Direction des Etudes et Recherches

    1996-07-01T23:59:59.000Z

    On the basis of a 22MJ/10MVA unit without stray field, the authors determine minimal performances for High {Tc} Superconducting (HTS) wires, in order to obtain HTS Superconducting Magnetic Energy Storage (SMES) competitive compared with Low {Tc} Superconducting (LTS) ones. The cost equation mainly considers the wire volume, the fabrication process and losses. They then recommend HTS critical current densities and operating magnetic fields close to the present state of the art for short samples. A 30% gain for HTS SMES compared with LTS one could be expected.

  9. 2006 11 43 TC 11 175 2006-43TC-11-18

    E-Print Network [OSTI]

    Choi, Woo-Young

    Bee applications. The architecture of the designed rx front-end, which consists of a low noise amplifier, a down Amplifier) . 1. Fig. 1. receiver block diagram. (1437) #12;2006 11 43 TC 11 177 . (Low Noise, a programmable gain amplifier, an up-mixer and a drive amplifier. A low-if topology is adapted for transceiver

  10. 99Tc Process Monitoring System In-Lab Performance Characterization

    SciTech Connect (OSTI)

    O'Hara, Matthew J.; Niver, Cynthia M.

    2014-01-01T23:59:59.000Z

    Executive Summary A 99Tc Process Monitoring (Tc-Mon) System has been designed and built for deployment at the recently constructed 200 West Pump & Treat (200W P&T) Plant in the 200 West Area ZP-1 Operable Unit of the Hanford Site. The plant is operated by CH2M Hill Plateau Remediation Company (CHPRC). The Tc-Mon system was created through collaboration between Pacific Northwest National Laboratory (PNNL) and Burge Environmental, Inc. The new systems design has been optimized based on experience from an earlier field test (2011) of a prototype system at the 200W-ZP-1 Interim Pump & Treat Plant. A portion of the new 200W P&T Plant is dedicated to removal of 99Tc from contaminated groundwater in the 200 West Area. 99Tc, as the pertechnetate anion (99TcO4-), is remediated through delivery of water into two trains (Trains A and B) of three tandem extraction columns filled with Purolite A530E resin. The resin columns cannot be regenerated; therefore, once they have reached their maximum useful capacity, the columns must be disposed of as radioactive waste. The Tc-Mon systems primary duty will be to periodically sample and analyze the effluents from each of the two primary extraction columns to determine 99Tc breakthrough. The Tc-Mon system will enable the CH2M Hill Plateau Remediation Company (CHPRC) to measure primary extraction column breakthrough on demand. In this manner, CHPRC will be able to utilize each extraction column to its maximum capacity. This will significantly reduce column disposal and replacement costs over the life of the plant. The Tc-Mon system was constructed by Burge Environmental, Inc. and was delivered to PNNL in June 2013 for setup and initial hardware and software performance testing in the 325 Building. By early July, PNNL had initiated an in-laboratory performance characterization study on the system. The objective was to fully calibrate the system and then evaluate the quality of the analytical outputs 1) against a series of clean groundwater samples prepared as 99Tc standards, and 2) on actual 200W P&T Plant grab samples containing 99Tc (and other radioactive and non-radioactive contaminants) at levels reported by the Waste Sampling and Characterization Facility. These grab samples included pre-treated (Pre-Resin) and post-treated (Post-Resin) 200W P&T Plant waters for May through August 2013. This report contains the following information: The genesis of the 99Tc sensor and the Tc-Mon analytical system. A description of the Tc-Mon systems major hardware and software components. A description of the operational principles behind the 99Tc sensor. Results from the calibration of three components within the Tc-Mon system. The three systems requiring calibration are: 1. Sampling Chamber 2. Conductivity Sensor 3. 99Tc Sensor Presentation of analytical results obtained on the fully calibrated Tc-Mon system. This includes a determination of the precision and accuracy of each system defined above. Estimation of the 99Tc sensors minimum detectable activity and limit of quantification. A brief discussion of potential chemical and radiological influences on the 99Tc sensor based on known contaminants in 200W P&T Plant water. Observations regarding 99Tc sensor longevity.

  11. Graphoepitaxial high-Tc SQUIDs M. I. Faley1

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    , in measurement systems for low field magnetic resonance imaging, geomagnetic surveys or magnetoencephalography of graphoepitaxially engineered high-Tc direct current superconducting quantum interferometer devices (DC SQUIDs and verified [4, 6, 7]. These Josephson junctions were intended for integration in high-Tc direct current

  12. ISO/TC 211/WG 9/N 003 Number of Pages: 30

    E-Print Network [OSTI]

    Imai, Hiroshi

    ISO/TC 211/WG 9/N 003 2002-06-04 Number of Pages: 30 ISO/TC 211 Geographic Information: Members of Working Group 9 ISO/TC 211 Secretariat ISO/TC 211/WG9 Convenor Telephone: + 81 3 5841 4117://www-imai.is.s.u-tokyo.ac.jp/wg9/ #12; ISO/IEC 2002 -- All rights reserved ISO/IEC TC 211/SC N Date: 2002-03-6 ISO-IEC_ ISO/IEC TC

  13. ISO/TC 211/WG 9/N 005 Number of Pages: 60

    E-Print Network [OSTI]

    Imai, Hiroshi

    ISO/TC 211/WG 9/N 005 2002-08-26 Number of Pages: 60 ISO/TC 211 Geographic Information: Reference: None Distribution: Members of Working Group 9 ISO/TC 211 Secretariat ISO/TC 211/WG9 Convenor://www-imai.is.s.u-tokyo.ac.jp/wg9/ #12; ISO 2002 -- All rights reserved ISO TC 211/SC N Date: 2002-08-26 ISO/WD 19131 ISO TC 211

  14. ISO/TC 211/WG 9/N 004 Number of Pages: 21

    E-Print Network [OSTI]

    Imai, Hiroshi

    ISO/TC 211/WG 9/N 004 2002-07-20 Number of Pages: 21 ISO/TC 211 Geographic Information action: Reference: None Distribution: Members of Working Group 9 ISO/TC 211 Secretariat ISO/TC 211/WG9://www-imai.is.s.u-tokyo.ac.jp/wg9/ #12; ISO 2002 -- All rights reserved ISO TC 211/SC N 1310 Date: 2002-07-20 ISO/PDTS 19127 ISO TC

  15. areneisonitrile tc complex: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the body with a simple and quantitatively interpretable kinetics. The sup 9 sup 9 sup m Tc occupies 80% from total of the studies realized in the world by the optimum combination...

  16. Introduction to Tc/I in Hanford Flowsheet

    Office of Environmental Management (EM)

    Introduction to TcI in Hanford Flowsheet Gary Smith Office of Waste Processing (EM-31) November 18, 2010 2 Rough Flowsheet Diagram Tank Farm Evaporator Pretreatment Evaporator IDF...

  17. Highly Oxidizing Excited States of Re and Tc Complexes. | EMSL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    in water solution. Citation: Del Negro AS, CJ Seliskar, WR Heineman, SE Hightower, SA Bryan, and BP Sullivan.2006."Highly Oxidizing Excited States of Re and Tc Complexes."Journal...

  18. ISO/TC 211/WG 9/N 009 Number of Pages: 66

    E-Print Network [OSTI]

    Imai, Hiroshi

    ISO/TC 211/WG 9/N 009 2002-06-17 Number of Pages: 66 ISO/TC 211 Geographic Information and the Convenor till 2003- 06-30 Reference: None Distribution: Members of Working Group 9 ISO/TC 211 Secretariat ISO/TC 211/WG9 Convenor Telephone: + 81 3 5841 4117 Telefax: + 81 3 5800 6933 Hiroshi Imai Department

  19. Power Systems Development Facility Gasification Test Run TC07

    SciTech Connect (OSTI)

    Southern Company Services

    2002-04-05T23:59:59.000Z

    This report discusses Test Campaign TC07 of the Kellogg Brown & Root, Inc. (KBR) Transport Reactor train with a Siemens Westinghouse Power Corporation (Siemens Westinghouse) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The Transport Reactor is an advanced circulating fluidized-bed reactor designed to operate as either a combustor or a gasifier using a particulate control device (PCD). The Transport Reactor was operated as a pressurized gasifier during TC07. Prior to TC07, the Transport Reactor was modified to allow operations as an oxygen-blown gasifier. Test Run TC07 was started on December 11, 2001, and the sand circulation tests (TC07A) were completed on December 14, 2001. The coal-feed tests (TC07B-D) were started on January 17, 2002 and completed on April 5, 2002. Due to operational difficulties with the reactor, the unit was taken offline several times. The reactor temperature was varied between 1,700 and 1,780 F at pressures from 200 to 240 psig. In TC07, 679 hours of solid circulation and 442 hours of coal feed, 398 hours with PRB coal and 44 hours with coal from the Calumet mine, and 33 hours of coke breeze feed were attained. Reactor operations were problematic due to instrumentation problems in the LMZ resulting in much higher than desired operating temperatures in the reactor. Both reactor and PCD operations were stable and the modifications to the lower part of the gasifier performed well while testing the gasifier with PRB coal feed.

  20. Power Systems Development Facility Gasification Test Campaign TC25

    SciTech Connect (OSTI)

    Southern Company Services

    2008-12-01T23:59:59.000Z

    In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF), located in Wilsonville, Alabama, routinely demonstrates gasification technologies using various types of coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a KBR Transport Gasifier, a hot gas particulate control device, advanced syngas cleanup systems, and high-pressure solids handling systems. This report summarizes the results of TC25, the second test campaign using a high moisture lignite coal from the Red Hills mine in Mississippi as the feedstock in the modified Transport Gasifier configuration. TC25 was conducted from July 4, 2008, through August 12, 2008. During TC25, the PSDF gasification process operated for 742 hours in air-blown gasification mode. Operation with the Mississippi lignite was significantly improved in TC25 compared to the previous test (TC22) with this fuel due to the addition of a fluid bed coal dryer. The new dryer was installed to dry coals with very high moisture contents for reliable coal feeding. The TC25 test campaign demonstrated steady operation with high carbon conversion and optimized performance of the coal handling and gasifier systems. Operation during TC25 provided the opportunity for further testing of instrumentation enhancements, hot gas filter materials, and advanced syngas cleanup technologies. The PSDF site was also made available for testing of the National Energy Technology Laboratory's fuel cell module and Media Process Technology's hydrogen selective membrane with syngas from the Transport Gasifier.

  1. Iron phosphate glass for immobilization of 99Tc

    SciTech Connect (OSTI)

    Xu, Kai; Hrma, Pavel R.; Um, Wooyong; Heo, Jong

    2013-06-15T23:59:59.000Z

    Technetium-99 (99Tc) can bring serious environmental threats because of its long half-life (t1/2 = ~2.1 x 105 years), high fission yield (~6%), and high solubility and mobility in the ground water. The high volatility makes it difficult to immobilize 99Tc in continuous melters vitrifying 99Tc-containing nuclear wastes in borosilicate glasses. This work explores a possibility of incorporating a high concentration of 99Tc, surrogated by the non-radioactive Re, in an iron phosphate glass by melting mixtures of iron phosphate glass frits with 1.5-6 mass% KReO4 at ~1000 C. The retention of Re achieved was ~1.1 mass%. The normalized Re release by the 7-day Product Consistency Test was <10*2 g/m2. Surprisingly, the Re escaped from the melt within a short time of heating, especially when the temperature was increased. Therefore, 99Tc volatilization would still be a challenging task for its immobilization in iron phosphate glasses.

  2. trans-K3[TcO2(CN)4

    SciTech Connect (OSTI)

    Chatterjee, Sayandev; Del Negro, Andrew S.; Edwards, Matthew K.; Twamley, Brendan; Krause, Jeanette A.; Bryan, Samuel A.

    2010-07-14T23:59:59.000Z

    The dioxotetracyanotechnetate anion, [TcO2(CN)4]3-, of the title complex has octahedral symmetry. The technetium is located on a center of inversion and is bound by two oxygen atoms and four cyano ligands. The Tc?O bond distance of 1.7721 (12) is consistent with double bond character. The potassium cations [located on special (1/2,0,1) and general positions] reside in octahedral or tetrahedral environments; interionic KO and KN interactions occur in the 2.7877 (19)-2.8598 (15) range.

  3. Tc-99 Adsorption on Selected Activated Carbons - Batch Testing Results

    SciTech Connect (OSTI)

    Mattigod, Shas V.; Wellman, Dawn M.; Golovich, Elizabeth C.; Cordova, Elsa A.; Smith, Ronald M.

    2010-12-01T23:59:59.000Z

    CH2M HILL Plateau Remediation Company (CHPRC) is currently developing a 200-West Area groundwater pump-and-treat system as the remedial action selected under the Comprehensive Environmental Response, Compensation, and Liability Act Record of Decision for Operable Unit (OU) 200-ZP-1. This report documents the results of treatability tests Pacific Northwest National Laboratory researchers conducted to quantify the ability of selected activated carbon products (or carbons) to adsorb technetium-99 (Tc-99) from 200-West Area groundwater. The Tc-99 adsorption performance of seven activated carbons (J177601 Calgon Fitrasorb 400, J177606 Siemens AC1230AWC, J177609 Carbon Resources CR-1240-AW, J177611 General Carbon GC20X50, J177612 Norit GAC830, J177613 Norit GAC830, and J177617 Nucon LW1230) were evaluated using water from well 299-W19-36. Four of the best performing carbons (J177606 Siemens AC1230AWC, J177609 Carbon Resources CR-1240-AW, J177611 General Carbon GC20X50, and J177613 Norit GAC830) were selected for batch isotherm testing. The batch isotherm tests on four of the selected carbons indicated that under lower nitrate concentration conditions (382 mg/L), Kd values ranged from 6,000 to 20,000 mL/g. In comparison. Under higher nitrate (750 mg/L) conditions, there was a measureable decrease in Tc-99 adsorption with Kd values ranging from 3,000 to 7,000 mL/g. The adsorption data fit both the Langmuir and the Freundlich equations. Supplemental tests were conducted using the two carbons that demonstrated the highest adsorption capacity to resolve the issue of the best fit isotherm. These tests indicated that Langmuir isotherms provided the best fit for Tc-99 adsorption under low nitrate concentration conditions. At the design basis concentration of Tc 0.865 g/L(14,700 pCi/L), the predicted Kd values from using Langmuir isotherm constants were 5,980 mL/g and 6,870 mL/g for for the two carbons. These Kd values did not meet the target Kd value of 9,000 mL/g. Tests conducted to ascertain the effects of changing pH showed that at pH values of 6.5 and 7.5, no significant differences existed in Tc-adsorption performance for three of the carbons, but the fourth carbon performed better at pH 7.5. When the pH was increased to 8.5, a slight decline in performance was observed for all carbons. Tests conducted to ascertain the temperature effect on Tc-99 adsorption indicated that at 21 C, 27 C, and 32 C there were no significant differences in Tc-99 adsorption for three of the carbons. The fourth carbon showed a noticeable decline in Tc-99 adsorption performance with increasing temperature. The presence of volatile organic compounds (VOCs) in the source water did not significantly affect Tc-99 adsorption on either of two carbons tested. Technetium-99 adsorption differed by less than 15% with or without VOCs present in the test water, indicating that Tc-99 adsorption would not be significantly affected if VOCs were removed from the water prior to contact with carbon.

  4. TC an intermediate language for programming chip multiprocessors

    E-Print Network [OSTI]

    Jesshope, Chris

    . Ideally, a program written in TC is a dynamic, concurrent control structure over small sequences of code in the MicroGrid project at the University of Amsterdam, which is designing chip multiprocessors based on the microthreaded model of concurrency [1]. It is also being adapted as a virtual system's architecture (SVM

  5. Power Systems Development Facility Gasification Test Run TC09

    SciTech Connect (OSTI)

    Southern Company Services

    2002-09-30T23:59:59.000Z

    This report discusses Test Campaign TC09 of the Kellogg Brown & Root, Inc. (KBR) Transport Gasifier train with a Siemens Westinghouse Power Corporation (Siemens Westinghouse) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The Transport Gasifier is an advanced circulating fluidized-bed gasifier designed to operate as either a combustor or a gasifier in air- or oxygen-blown mode of operation using a particulate control device (PCD). The Transport Gasifier was operated as a pressurized gasifier during TC09 in air- and oxygen-blown modes. Test Run TC09 was started on September 3, 2002, and completed on September 26, 2002. Both gasifier and PCD operations were stable during the test run, with a stable baseline pressure drop. The oxygen feed supply system worked well and the transition from air to oxygen was smooth. The gasifier temperature varied between 1,725 and 1,825 F at pressures from 125 to 270 psig. The gasifier operates at lower pressure during oxygen-blown mode due to the supply pressure of the oxygen system. In TC09, 414 hours of solid circulation and over 300 hours of coal feed were attained with almost 80 hours of pure oxygen feed.

  6. Cationic complex: 99m Tc-N,N -dimethyldiaminedithiol

    E-Print Network [OSTI]

    Suh, Young-Ger

    of Nuclear Medicine, Seoul National University College of Medicine, Seoul, South Korea b Clinical Research National University College of Medicine, Seoul, South Korea d College of Pharmacy, Seoul National 99m Tc-labeled cationic compounds have either been suggested or used for nuclear medicine imaging

  7. Reductive Sequestration Of Pertechnetate (99TcO4-) By Nano Zerovalent...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Sequestration Of Pertechnetate (99TcO4-) By Nano Zerovalent Iron (nZVI) Transformed By Abiotic Sulfide. Reductive Sequestration Of Pertechnetate (99TcO4-) By Nano Zerovalent Iron...

  8. Simultaneous ??m?Tc-MDP/I-MIBG imaging of neuroblastoma using SPECT-CT

    E-Print Network [OSTI]

    Prez-Gutirrez, Jos P. (Jos Pablo Andrs)

    2011-01-01T23:59:59.000Z

    Simultaneous ??m??Tc-MDP/ I-MIBG SPECT has the potential to replace current clinical sequential acquisitions of ??m?Tc-MDP and -MIBG SPECT studies, and therefore has great potential to reduce imaging time, sedation ...

  9. Text classification Naive Bayes NB theory Evaluation of TC Web Search and Text Mining

    E-Print Network [OSTI]

    Gray, Alexander

    Bayes NB theory Evaluation of TC Take-away today Text classification: definition & relevance theory Evaluation of TC Take-away today Text classification: definition & relevance to information: definition & relevance to information retrieval Naive Bayes: simple baseline text classifier Theory

  10. ISO/TC 211/WG 9/N 014 Number of Pages:17

    E-Print Network [OSTI]

    Imai, Hiroshi

    ISO/TC 211/WG 9/N 014 2004-08-16 Number of Pages:17 ISO/TC 211 Geographic Information Distribution: Members of Working Group 9 ISO/TC 211 Secretariat ISO/TC 211/WG9 Convenor Telephone: + 81 3 5841://www-imai.is.s.u-tokyo.ac.jp/wg9/ #12; ISO 2004 All rights reserved Document type: International Standard Document subtype

  11. ISO/TC 211/WG 9/N 006 Number of Pages: 41

    E-Print Network [OSTI]

    Imai, Hiroshi

    ISO/TC 211/WG 9/N 006 2003-01-22 Number of Pages: 41 ISO/TC 211 Geographic Information of Working Group 9 ISO/TC 211 Secretariat ISO/TC 211/WG9 Convenor Telephone: + 81 3 5841 4117 Telefax: + 81 3 113-0033, Japan E-mail: imai@is.s.u-tokyo.ac.jp URL: http://www-imai.is.s.u-tokyo.ac.jp/wg9/ #12; ISO

  12. ISO/TC 211/WG 9/N 002 Number of Pages: 19

    E-Print Network [OSTI]

    Imai, Hiroshi

    ISO/TC 211/WG 9/N 002 2002-05-30 Number of Pages: 19 ISO/TC 211 Geographic Information till 2002-06-14 Reference: None Distribution: Members of Working Group 9 ISO/TC 211 Secretariat ISO@is.s.u-tokyo.ac.jp URL: http://www-imai.is.s.u-tokyo.ac.jp/wg9/ #12; ISO 2002 All rights reserved ISO TC 211 N

  13. ISO/TC 211/WG 9/N 013 Number of Pages:20

    E-Print Network [OSTI]

    Imai, Hiroshi

    ISO/TC 211/WG 9/N 013 2004-08-07 Number of Pages:20 ISO/TC 211 Geographic Information Distribution: Members of Working Group 9 ISO/TC 211 Secretariat ISO/TC 211/WG9 Convenor Telephone: + 81 3 5841://www-imai.is.s.u-tokyo.ac.jp/wg9/ #12; ISO 2004 All rights reserved Document type: International Standard Document subtype

  14. ISO/TC 211/WG 9/N 017 Number of Pages: 3

    E-Print Network [OSTI]

    Imai, Hiroshi

    ISO/TC 211/WG 9/N 017 2005-06-27 Number of Pages: 3 ISO/TC 211 Geographic Information: Reference: None Distribution: Members of Working Group 9 ISO/TC 211 Secretariat ISO/TC 211/WG9 Convenor in the WG9 is reported by the Convenor. 2.1 WI 6709 The target of WI 6709 is to revise ISO 6709:1983. Due

  15. ISO/TC 211/WG 9/N 016 Number of Pages: 87

    E-Print Network [OSTI]

    Imai, Hiroshi

    ISO/TC 211/WG 9/N 016 2004-10-28 Number of Pages: 87 ISO/TC 211 Geographic Information ISO/TC 211 Secretariat ISO/TC 211/WG9 Convenor Telephone: + 81 3 5841 4117 Telefax: + 81 3 5800 6933-8656, Japan E-mail: imai@is.s.u-tokyo.ac.jp URL: http://www-imai.is.s.u-tokyo.ac.jp/wg9/ #12;ISO/PDTS ISO

  16. ISO/TC 211/WG 9/N 012 Number of Pages: 58

    E-Print Network [OSTI]

    Imai, Hiroshi

    ISO/TC 211/WG 9/N 012 2004-07-12 Number of Pages: 58 ISO/TC 211 Geographic Information of Working Group 9 ISO/TC 211 Secretariat ISO/TC 211/WG9 Convenor Telephone: + 81 3 5841 4117 Telefax: + 81 3 113-8656, Japan E-mail: imai@is.s.u-tokyo.ac.jp URL: http://www-imai.is.s.u-tokyo.ac.jp/wg9/ #12;ISO

  17. TagParser: well on the way to ISO-TC37 conformance Gil FRANCOPOULO

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    TagParser: well on the way to ISO-TC37 conformance Gil FRANCOPOULO TAGMATICA 126 rue de Picpus that are currently under development within ISO-TC37. Then as an example of application of these ISO specifications and research teams. Officially recognized specifications are needed. The ISO-TC37 work started from the GENELEX

  18. Power Systems Development Facility Gasification Test Campaing TC14

    SciTech Connect (OSTI)

    Southern Company Services

    2004-02-28T23:59:59.000Z

    In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama, routinely demonstrates gasification technologies using various types of coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a KBR Transport Gasifier, a hot gas particulate control device (PCD), advanced syngas cleanup systems, and high pressure solids handling systems. This report details test campaign TC14 of the PSDF gasification process. TC14 began on February 16, 2004, and lasted until February 28, 2004, accumulating 214 hours of operation using Powder River Basin (PRB) subbituminous coal. The gasifier operating temperatures varied from 1760 to 1810 F at pressures from 188 to 212 psig during steady air blown operations and approximately 160 psig during oxygen blown operations.

  19. NMR/MRI with hyperpolarized gas and high Tc SQUID

    DOE Patents [OSTI]

    Schlenga, Klaus (Eggenstein, DE); de Souza, Ricardo E. (Recife, BR); Wong-Foy, Annjoe (Berkeley, CA); Clarke, John (Berkeley, CA); Pines, Alexander (Berkeley, CA)

    2000-01-01T23:59:59.000Z

    A method and apparatus for the detection of nuclear magnetic resonance (NMR) signals and production of magnetic resonance imaging (MRI) from samples combines the use of hyperpolarized inert gases to enhance the NMR signals from target nuclei in a sample and a high critical temperature (Tc) superconducting quantum interference device (SQUID) to detect the NMR signals. The system operates in static magnetic fields of 3 mT or less (down to 0.1 mT), and at temperatures from liquid nitrogen (77K) to room temperature. Sample size is limited only by the size of the magnetic field coils and not by the detector. The detector is a high Tc SQUID magnetometer designed so that the SQUID detector can be very close to the sample, which can be at room temperature.

  20. Power Systems Development Facility Gasification Test Run TC08

    SciTech Connect (OSTI)

    Southern Company Services

    2002-06-30T23:59:59.000Z

    This report discusses Test Campaign TC08 of the Kellogg Brown & Root, Inc. (KBR) Transport Gasifier train with a Siemens Westinghouse Power Corporation (Siemens Westinghouse) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The Transport Gasifier is an advanced circulating fluidized-bed gasifier designed to operate as either a combustor or a gasifier in air- or oxygen-blown mode using a particulate control device (PCD). The Transport Gasifier was operated as a pressurized gasifier in air- and oxygen-blown modes during TC08. Test Run TC08 was started on June 9, 2002 and completed on June 29. Both gasifier and PCD operations were stable during the test run with a stable baseline pressure drop. The oxygen feed supply system worked well and the transition from air to oxygen blown was smooth. The gasifier temperature was varied between 1,710 and 1,770 F at pressures from 125 to 240 psig. The gasifier operates at lower pressure during oxygen-blown mode due to the supply pressure of the oxygen system. In TC08, 476 hours of solid circulation and 364 hours of coal feed were attained with 153 hours of pure oxygen feed. The gasifier and PCD operations were stable in both enriched air and 100 percent oxygen blown modes. The oxygen concentration was slowly increased during the first transition to full oxygen-blown operations. Subsequent transitions from air to oxygen blown could be completed in less than 15 minutes. Oxygen-blown operations produced the highest synthesis gas heating value to date, with a projected synthesis gas heating value averaging 175 Btu/scf. Carbon conversions averaged 93 percent, slightly lower than carbon conversions achieved during air-blown gasification.

  1. Power Systems Development Facility Gasification Test Campaing TC18

    SciTech Connect (OSTI)

    Southern Company Services

    2005-08-31T23:59:59.000Z

    In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama, routinely demonstrates gasification technologies using various types of coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a KBR Transport Gasifier, a hot gas particulate control device (PCD), advanced syngas cleanup systems, and high pressure solids handling systems. This report details Test Campaign TC18 of the PSDF gasification process. Test campaign TC18 began on June 23, 2005, and ended on August 22, 2005, with the gasifier train accumulating 1,342 hours of operation using Powder River Basin (PRB) subbituminous coal. Some of the testing conducted included commissioning of a new recycle syngas compressor for gasifier aeration, evaluation of PCD filter elements and failsafes, testing of gas cleanup technologies, and further evaluation of solids handling equipment. At the conclusion of TC18, the PSDF gasification process had been operated for more than 7,750 hours.

  2. Tc and Re Behavior in Borosilicate Waste Glass Vapor Hydration Tests

    SciTech Connect (OSTI)

    McKeown, David A.; Buechele, Andrew C.; Pegg, Ian L. [Vitreous State Laboratory, Catholic University of America, 620 Michigan Ave., N.E., Washington, DC, 20064 (United States); Lukens, Wayne W.; Shuh, David K. [Actinide Chemistry Group, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720 (United States)

    2007-07-01T23:59:59.000Z

    Technetium (Tc), found in some nuclear wastes, is of particular concern with regard to long-term storage, because of its long-lived radioactivity and high mobility in the environment. Tc and rhenium (Re), commonly used as a non-radioactive surrogate for Tc, were studied to assess their behavior in borosilicate glass under hydrothermal conditions in the Vapor Hydration Test (VHT). X-ray absorption spectroscopy (XAS) and scanning electron microscopy (SEM) measurements were made on the original Tc- and Re-containing glasses and their corresponding VHT samples, and show different behavior for Tc and Re under VHT conditions. XAS indicates that, despite starting with different Tc(IV) and Tc(VII) distributions in each glass, the VHT samples have 100% Tc(IV)O{sub 6} environments. SEM shows complete alteration of the original glass, Tc enrichment near the sample surface, and Tc depletion in the center. Perrhenate (Re(VII)O{sub 4}{sup -}) is dominant in both Re-containing samples before and after the VHT, where Re is depleted near the VHT sample surface and more concentrated toward the center. (authors)

  3. Power Systems Development Facility Gasification Test Run TC10

    SciTech Connect (OSTI)

    Southern Company Services

    2002-12-30T23:59:59.000Z

    This report discusses Test Campaign TC10 of the Kellogg Brown & Root, Inc. (KBR) Transport Gasifier train with a Siemens Westinghouse Power Corporation (Siemens Westinghouse) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The Transport Gasifier is an advanced circulating fluidized-bed gasifier designed to operate as either a combustor or a gasifier in air- or oxygen-blown mode of operation using a particulate control device (PCD). The Transport Gasifier was operated as a pressurized gasifier during TC10 in air- (mainly for transitions and problematic operations) and oxygen-blown mode. Test Run TC10 was started on November 16, 2002, and completed on December 18, 2002. During oxygen-blown operations, gasifier temperatures varied between 1,675 and 1,825 F at pressures from 150 to 180 psig. After initial adjustments were made to reduce the feed rate, operations with the new fluidized coal feeder were stable with about half of the total coalfeed rate through the new feeder. However, the new fluidized-bed coal feeder proved to be difficult to control at low feed rates. Later the coal mills and original coal feeder experienced difficulties due to a high moisture content in the coal from heavy rains. Additional operational difficulties were experienced when several of the pressure sensing taps in the gasifier plugged. As the run progressed, modifications to the mills (to address processing the wet coal) resulted in a much larger feed size. This eventually resulted in the accumulation of large particles in the circulating solids causing operational instabilities in the standpipe and loop seal. Despite problems with the coal mills, coal feeder, pressure tap nozzles and the standpipe, the gasifier did experience short periods of stability during oxygenblown operations. During these periods, the syngas quality was high. During TC10, the gasifier gasified over 609 tons of Powder River Basin subbituminous coal and accumulated a total of 416 hours of coal feed, over 293 hours of which were in oxygen-blown operation. No sorbent was used during the run.

  4. Recap and Conclusions to Tc/I in Hanford Flowsheet Presentations

    Office of Environmental Management (EM)

    Recap & Conclusions to TcI in Hanford Flowsheet Presentations Gary Smith Office of Waste Processing (EM-31) November 18, 2010 2 Rough Flowsheet Diagram Tank Farm Evaporator...

  5. Tc(VII) Reduction Kinetics by Titanomagnetite (Fe3-xTixO4) Nanoparticl...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    soluble Tc(IV)-bearing solids by a novel and well-characterized set of mixed-valent titanium-doped magnetite nanoparticles, structurally and chemically analogous to...

  6. Power Systems Development Facility Gasification Test Campaign TC22

    SciTech Connect (OSTI)

    Southern Company Services

    2008-11-01T23:59:59.000Z

    In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF), located in Wilsonville, Alabama, routinely demonstrates gasification technologies using various types of coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a KBR Transport Gasifier, a hot gas particulate control device, advanced syngas cleanup systems, and high-pressure solids handling systems. This report summarizes the results of TC22, the first test campaign using a high moisture lignite from Mississippi as the feedstock in the modified Transport Gasifier configuration. TC22 was conducted from March 24 to April 17, 2007. The gasification process was operated for 543 hours, increasing the total gasification operation at the PSDF to over 10,000 hours. The PSDF gasification process was operated in air-blown mode with a total of about 1,080 tons of coal. Coal feeder operation was challenging due to the high as-received moisture content of the lignite, but adjustments to the feeder operating parameters reduced the frequency of coal feeder trips. Gasifier operation was stable, and carbon conversions as high as 98.9 percent were demonstrated. Operation of the PCD and other support equipment such as the recycle gas compressor and ash removal systems operated reliably.

  7. Power Systems Development Facility Gasification Test Run TC11

    SciTech Connect (OSTI)

    Southern Company Services

    2003-04-30T23:59:59.000Z

    This report discusses Test Campaign TC11 of the Kellogg Brown & Root, Inc. (KBR) Transport Gasifier train with a Siemens Westinghouse Power Corporation (Siemens Westinghouse) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The Transport Gasifier is an advanced circulating fluidized-bed gasifier designed to operate as either a combustor or a gasifier in air- or oxygen-blown mode of operation using a particulate control device (PCD). Test run TC11 began on April 7, 2003, with startup of the main air compressor and the lighting of the gasifier start-up burner. The Transport Gasifier operated until April 18, 2003, when a gasifier upset forced the termination of the test run. Over the course of the entire test run, gasifier temperatures varied between 1,650 and 1,800 F at pressures from 160 to 200 psig during air-blown operations and around 135 psig during enriched-air operations. Due to a restriction in the oxygen-fed lower mixing zone (LMZ), the majority of the test run featured air-blown operations.

  8. Power Systems Development Facility Gasification Test Campaign TC16

    SciTech Connect (OSTI)

    Southern Company Services

    2004-08-24T23:59:59.000Z

    In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama, routinely demonstrates gasification technologies using various types of coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a KBR (formerly Kellogg Brown & Root) Transport Gasifier, a hot gas particulate control device, advanced syngas cleanup systems, and high-pressure solids handling systems. This report discusses Test Campaign TC16 of the PSDF gasification process. TC16 began on July 14, 2004, lasting until August 24, 2004, for a total of 835 hours of gasification operation. The test campaign consisted of operation using Powder River Basin (PRB) subbituminous coal and high sodium lignite from the North Dakota Freedom mine. The highest gasifier operating temperature mostly varied from 1,760 to 1,850 F with PRB and 1,500 to 1,600 F with lignite. Typically, during PRB operations, the gasifier exit pressure was maintained between 215 and 225 psig using air as the gasification oxidant and between 145 and 190 psig while using oxygen as the oxidant. With lignite, the gasifier operated only in air-blown mode, and the gasifier outlet pressure ranged from 150 to 160 psig.

  9. {sup 99}Tc bioassay: A direct comparison of liquid scintillation radiation detection and ICP-MS mass detection of the {sup 99}Tc isotope

    SciTech Connect (OSTI)

    Lewis, L.A. [Lockheed Martin Energy Systems, Inc., Oak Ridge, TN (United States). Analytical Services Organization; Schweitzer, G.K. [Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry

    1998-12-31T23:59:59.000Z

    A means of analyzing {sup 99}Tc in urine by inductively coupled plasma mass spectrometry (ICP-MS) has been developed. Historically, {sup 99}Tc analysis was based on the radiometric detection of the 293 keV E{sub Max.} beta decay product by liquid scintillation or gas flow proportional counting. A separation scheme for {sup 99}Tc detection by ICP-MS is given and is proven to be a sensitive and robust analytical alternative. A comparison of methods using radiometric and mass quantitation of {sup 99}Tc has been conducted in water, artificial urine, and real urine matrices at activity levels between 700 and 2,200 dpm/L. Liquid scintillation results based on an external standard manual quench correction and an automatic quench curve correction method are compared with results obtained by ICP-MS. Each method produced accurate results; however, the precision of the ICP-MS results is superior to that of liquid scintillation results.

  10. Synthesis, Structure Elucidation, and Redox Properties of [superscript 99]Tc Complexes of Lacunary Wells-Dawson Polyoxometalates: Insights into Molecular [superscript 99]Tc-Metal Oxide Interactions

    SciTech Connect (OSTI)

    McGregor, Donna; Burton-Pye, Benjamin P.; Howell, Robertha C.; Mbomekalle, Israel M.; Lukens, Jr., Wayne W.; Bian, Fang; Mausolf, Edward; Poineau, Frederic; Czerwinski, Kenneth R.; Francesconi, Lynn C. (UNLV); (City U/NY)

    2011-11-17T23:59:59.000Z

    The isotope {sup 99}Tc ({beta}{sub max}, 293.7; half-life, 2.1 x 10{sup 5} years) is an abundant product of uranium-235 fission in nuclear reactors and is present throughout the radioactive waste stored in underground tanks at the Hanford and Savannah River sites. Understanding and controlling the extensive redox chemistry of {sup 99}Tc is important in identifying tunable strategies to separate {sup 99}Tc from spent fuel and from waste tanks and, once separated, to identify and develop an appropriately stable waste form for {sup 99}Tc. Polyoxometalates (POMs), nanometer-sized models for metal oxide solid-state materials, are used in this study to provide a molecular level understanding of the speciation and redox chemistry of incorporated {sup 99}Tc. In this study, {sup 99}Tc complexes of the ({alpha}{sub 2}-P{sub 2}W{sub 17}O{sub 61}){sup 10-} and ({alpha}{sub 1}-P{sub 2}W{sub 17}O{sub 61}){sup 10-} isomers were prepared. Ethylene glycol was used as a 'transfer ligand' to minimize the formation of TcO{sub 2} {center_dot} xH{sub 2}O. The solution structures, formulations, and purity of TcVO({alpha}{sub 1}/{alpha}{sub 2}-P{sub 2}W{sub 17}O{sub 61}){sup 7-} were determined by multinuclear NMR. X-ray absorption spectroscopy of the complexes is in agreement with the formulation and structures determined from {sup 31}P and {sup 183}W NMR. Preliminary electrochemistry results are consistent with the EXAFS results, showing a facile reduction of the TcVO({alpha}{sub 1}-P{sub 2}W{sub 17}O{sub 61}){sup 7-} species compared to the TcVO({alpha}{sub 2}-P{sub 2}W{sub 17}O{sub 61}){sup 7-} analog. The {alpha}{sub 1} defect is unique in that a basic oxygen atom is positioned toward the {alpha}{sub 1} site, and the Tc{sup V}O center appears to form a dative metal-metal bond with a framework W site. These attributes may lead to the assistance of protonation events that facilitate reduction. Electrochemistry comparison shows that the ReV analogs are about 200 mV more difficult to reduce in accordance with periodic trends.

  11. Synthesis, structure elucidation and redox properties of 99Tc complexes of lacunary Wells Dawson polyoxometalates: insights into molecular 99Tc - metal oxide interactions

    SciTech Connect (OSTI)

    McGregor, Donna; Burton-Pye, Benjamin P.; Howell, Robertha C.; Mbomekalle, Israel M.; Lukens Jr, Wayne W.; Bian, Fang; Mausolf, Edward; Poineau, Frederic; Czerwinski, Kenneth R; Francesconi, Lynn C.

    2011-01-10T23:59:59.000Z

    The isotope 99Tc (beta max: 250 keV, half-life: 2 x 105 year) is an abundant product of uranium-235 fission in nuclear reactors and is present throughout the radioactive waste stored in underground tanks at Hanford and Savannah River. Understanding and controlling the extensive redox chemistry of 99Tc is important to identify tunable strategies to separate 99Tc from spent fuel and from waste tanks and once separated, to identify and develop an appropriately stable waste-form for 99Tc. Polyoxometalates (POMs), nanometer sized models for metal oxide solid-state materials, are used in this study to provide a molecular level understanding of the speciation and redox chemistry of incorporated 99Tc. In this study, 99Tc complexes of the (alpha 2-P2W17O61)10- and (alpha 1-P2W17O61)10- isomers were prepared. Ethylene glycol was used as a"transfer ligand" to minimize the formation of TcO2 cdot xH2O. The solution structures, formulations, and purity of TcVO(alpha 1/alpha 2-P2W17O61)7- were determined by multinuclear NMR. X-ray Absorption Spectroscopy of the complexes are in agreement with the formulation and structures determined from 31P and 183W NMR. Preliminary electrochemistry results are consistent with the EXAFS results, showing a facile reduction of the TcVO(alpha 1-P2W17O61)7- species compared to the TcVO(alpha 2-P2W17O61)7- analog. The alpha1- defect is unique in that a basic oxygen atom is positioned toward the alpha1- site and the TcVO center appears to form a dative metal-metal bond with a framework W site. These attributes may lead to the assistance of protonation events that facilitate reduction. Electrochemistry comparison shows that the ReV analogs are about 200 mV more difficult to reduce in accordance with periodic trends.

  12. TC/Rockwell/5-20-04 SMU Engineering p. 1 SMU, Dept of Electrical Engineering

    E-Print Network [OSTI]

    Chen, Thomas M.

    TC/Rockwell/5-20-04 SMU Engineering p. 1 Tom Chen SMU, Dept of Electrical Engineering tchen@engr.smu.edu http://www.engr.smu.edu/~tchen Intrusion Detection for Mobile Ad Hoc Networks #12;TC/Rockwell/5-20-04 SMU Engineering p. 2 Security problems in MANETs Role of intrusion detection systems (IDSs

  13. The Heavy Quark Free-Energy at T<Tc in AdS/QCD

    E-Print Network [OSTI]

    K. Veshgini; E. Megias; J. Nian; H. J. Pirner

    2009-11-09T23:59:59.000Z

    Starting with the modified AdS/QCD metric developed in Ref.[1] we use the Nambu-Goto action to obtain the free energy of a quark-antiquark pair at T<Tc, for which we show that the effective string tension goes to zero at Tc=154MeV.

  14. M(^\\/71\\ Ris-M-2739 3 Determination of "Tc in

    E-Print Network [OSTI]

    . The evaporation rates of Ru04 and Tc04~ are determined at 100C in 0.1 N H2S04. A higher decontamination factor 2/xylene extraction at controlled valence are used for decontamination of ruthenium, n>Ag and other nuclides Experimental S Procedure 6 Principle 6 Determination of die chemical yield of"Tc and decontamination factor for

  15. Submillimeter residual losses in high-{Tc} superconductors

    SciTech Connect (OSTI)

    Miller, D.

    1993-09-01T23:59:59.000Z

    Bolometry was used obtain accurate submillimeter residual loss data for epitaxial films of YBa{sub 2}Cu{sub 3}O{sub 7} (YBCO), Tl{sub 2}Ca{sub 2}Ba{sub 2}Cu{sub 3}O{sub 10}, Tl{sub 2}CaBa{sub 2}Cu{sub 2}O{sub 8} (TCBCO), and Ba{sub 0.6}K{sub 0.4}BiO{sub 3} (BKBO). We were able to fit the absorptivity measured for Nb films to an Eliashberg strong coupling calculation; excellent agreement resulted between parameters from best fits and measured Residual Resistivity Ratio. Microwave surface resistance measurements made on the same YBCO and TCBCO films are in excellent agreement with submillimeter measurements. Absorptivities for all YBCO films studied are qualitatively similar, increasing smoothly with frequency, with no gap-like features below the well known absorption edge at 450 cm{sup {minus}1}. Losses in YBCO films were fit to a weakly coupled grain model for the a-b plane conductivity. Strong phonon structure was observed in TCBCO films between 60 and 700 cm{sup {minus}1} (2 THz and 23 THz); these losses could not be fitted to the simple weakly coupled grain model, in contrast to the case for other high-{Tc} superconductors where phonon structure observed in ceramics are is absent in epitaxial oriented films and crystals because of electronic screening due to high conductivity of a-b planes. Absorptivity data for the BKBO films all show a strong absorption onset near the BCS tunneling gap of 3.5 k{sub B}{Tc}. Comparison with strong coupling Eliashberg predictions and of a Kramers-Kronig analysis indicate that the absorption onset is consistent with a superconducting energy gap. Effects of magnetic field on residual losses in YBCO films show a resonant absorption feature in vicinity of predicted

  16. Competitive Reduction of Pertechnetate (99TcO4?) by Dissimilatory Metal Reducing Bacteria and Biogenic Fe(II)

    SciTech Connect (OSTI)

    Plymale, Andrew E.; Fredrickson, Jim K.; Zachara, John M.; Dohnalkova, Alice; Heald, Steve M.; Moore, Dean A.; Kennedy, David W.; Marshall, Matthew J.; Wang, Chong M.; Resch, Charles T.; Nachimuthu, Ponnusamy

    2011-02-01T23:59:59.000Z

    The fate of pertechnetate (99Tc(VII)O4 -) during bioreduction was investigated in the presence of 2-line ferrihydrite (Fh) and various dissimilatory metal reducing bacteria (DMRB) (Geobacter, Anaeromyxobacter, Shewanella) in comparison with TcO4 - bioreduction in the absence of Fh. In the presence of Fh, Tc was present primarily as a fine-grained Tc(IV)/Fe precipitate that was distinct from the Tc(IV)O2 nH2O solids produced by direct biological Tc(VII) reduction. Aqueous Tc concentrations (<0.2 ?m) in the bioreduced Fh suspensions (1.7 to 3.2 10-9 mol L-1) were over 1 order of magnitude lower than when TcO4 - was biologically reduced in the absence of Fh (4.0 10-8 to 1.0 10-7 mol L-1). EXAFS analyses of the bioreduced Fh-Tc products were consistent with variable chain length Tc-O octahedra bonded to Fe-O octahedra associated with the surface of the residual or secondary Fe(III) oxide. In contrast, biogenic TcO2 nH2O had significantly more Tc-Tc second neighbors and a distinct long-range order consistent with small particle polymers of TcO2. In Fe-rich subsurface sediments, the reduction of Tc(VII) by Fe(II) may predominate over direct microbial pathways, potentially leading to lower concentrations of aqueous 99Tc(IV).

  17. {ldalove,jbyoo}@konkuk.ac.kr pSET2TC6: A Translation Tool to Standardize the Output Format

    E-Print Network [OSTI]

    pSET : pSET2TC6 O , {ldalove,jbyoo}@konkuk.ac.kr pSET2TC6: A Translation Tool' . PLCVerifier pSET PLCopen XML pSET2TC6 . . 1. pSET (POSAFE-Q Software Engineering Tool] . ASCII `*.ld' PLCopen TC6 (PLCopen Technical Commit 6) [8] XML . 2011 Vol.38, No.2(B) #12

  18. Power Systems Development Facility Gasification Test Campaign TC17

    SciTech Connect (OSTI)

    Southern Company Services

    2004-11-30T23:59:59.000Z

    In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama, routinely demonstrates gasification technologies using various types of coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a KBR (formerly Kellogg Brown & Root) Transport Gasifier, a hot gas particulate control device, advanced syngas cleanup systems, and high-pressure solids handling systems. This report summarizes the results gasification operation with Illinois Basin bituminous coal in PSDF test campaign TC17. The test campaign was completed from October 25, 2004, to November 18, 2004. System startup and initial operation was accomplished with Powder River Basin (PRB) subbituminous coal, and then the system was transitioned to Illinois Basin coal operation. The major objective for this test was to evaluate the PSDF gasification process operational stability and performance using the Illinois Basin coal. The Transport Gasifier train was operated for 92 hours using PRB coal and for 221 hours using Illinois Basin coal.

  19. Bioreduction of Fe-bearing clay minerals and their reactivity toward pertechnetate (Tc-99)

    SciTech Connect (OSTI)

    Bishop, Michael E.; Dong, Hailiang; Kukkadapu, Ravi K.; Liu, Chongxuan; Edelmann, Richard E.

    2011-07-01T23:59:59.000Z

    99Technetium (99Tc) is a fission product of uranium-235 and plutonium-239 and poses a high environmental hazard due to its long half-life (t1/2 = 2.13 x 105 y), abundance in nuclear wastes, and environmental mobility under oxidizing conditions [i.e., Tc(VII)]. Under reducing conditions, Tc(VII) can be reduced to insoluble Tc(IV). Ferrous iron [Fe(II)], either in aqueous form or in mineral form, has been used to reduce Tc(VII) to Tc(IV). However, the reactivity of Fe(II) from clay minerals, other than nontronite, toward immobilization of Tc(VII) and its role in retention of reduced Tc(IV) have not been investigated. In this study the reactivity of a suite of clay minerals toward Tc(VII) reduction and immobilization was evaluated. The clay minerals chosen for this study included five members in the smectite-illite (S-I) series, (montmorillonite, nontronite, rectorite, mixed layered I-S, and illite), chlorite, and palygorskite. Fe-oxides were removed from these minerals with a modified dithionite-citrate-bicarbonate (DCB) procedure. The total Fe content of these clay minerals, after Fe-oxide removal, ranged from 0.7 to 30.4% by weight, and the Fe(III)/Fe(total) ratio ranged from 44.9 to 98.5%. X-ray diffraction (XRD) and Mssbauer spectroscopy results showed that after Fe oxide removal the clay minerals were free of Fe-oxides. Scanning electron microscopy (SEM) revealed that little dissolution occurred during the DCB treatment. Bioreduction experiments were performed in bicarbonate buffer (pH-7) with Fe(III) in the clay minerals as the sole electron acceptor, lactate as the sole electron donor, and Shewanella Putrifaciens CN32 cells as mediators. In select tubes, anthraquinone-2,6-disulfate (AQDS) was added as electron shuttle to facilitate electron transfer. The extent of Fe(III) bioreduction was the highest for chlorite (~43 wt%) and the lowest for palygorskite (~4.17 wt%). In the S-I series, NAu-2 was the most reducible (~31 %) and illite the least (~0.4 %). The extent and initial rate of bioreduction were positively correlated with the percent smectite in the S-I series (i.e., layer expandability). Fe(II) in the bioreduced clay minerals subsequently was used to reduce Tc(VII) to Tc(IV) in PIPES buffer. Similar to the trend of bioreduction, in the S-I series, reduced smectite showed the highest reactivity toward Tc(VII), and reduced illite exhibited the least. The initial rate of Tc(VII) reduction, after normalization to clay and Fe(II) concentrations, was positively correlated with the percent smectite in the S-I series. Fe(II) in chlorite and palygorskite was also reactive toward Tc(VII) reduction. These data demonstrate that crystal chemical parameters (layer expandability, Fe and Fe(II) contents, and surface area etc.) play important roles in controlling the extent and rate of bioreduction and the reactivity toward Tc(VII) reduction. Reduced Tc(IV) resides within clay mineral matrix, and this association could minimize any potential of reoxidation over long term.

  20. Pertechnetate (TcO4-) reduction by reactive ferrous iron forms...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    The speciation of redox product Tc(IV) was not affected by reduction rate or Fe(II) mineralogy. Citation: Peretyazhko T, JM Zachara, RK Kukkadapu, SM Heald, IV Kutnyakov, CT...

  1. au mibi-tc 99m: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Concentrations CiteSeer Summary: Secure determination of the binding of 99mTc-radiopharmaceuticals to plasma (P) and blood cell (BC) constituents can help to understand the...

  2. trans-K3[TcO2(CN)4]. | EMSL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    range. Citation: Chatterjee S, AS Del Negro, MK Edwards, B Twamley, JA Krause, and SA Bryan.2010."trans-K3TcO2(CN)4."Acta Crystallographica. Section E 66(8):i61 - i62....

  3. Three-Component Spectroelectrochemical Sensor Module for the Detection of Pertechnetate (TcO4-)

    SciTech Connect (OSTI)

    Chatterjee, Sayandev; Bryan, Samuel A.; Seliskar, Carl J.; Heineman, William R.

    2013-07-01T23:59:59.000Z

    This review looks at the advancements in the development of a sensor for technetium (Tc) that is applicable to characterizing and monitoring the vadose zone and associated subsurface water. Subsurface contamination by Tc is of particular concern for two reasons: the extremely long lifetime of its most common isotope 99Tc (half-life = 2 x 105 years) and the fast migration in soils of pertechnetate (TcO4) which is considered to be the dominant 99Tc species in ground water. TcO4 does not have a characteristic spectral signature which prevents its rapid, sensitive, and economic in-situ detection. To address this problem, a novel spectroelectrochemical sensor has been designed that combines three modes of selectivity (electrochemistry, spectroscopy, and selective partitioning) into a single sensor to substantially improve specificity which is critical in the specific detection of an analyte in the presence of potential interfering species. The sensor consists of a basic spectroelectrochemical configuration: a waveguide with an optically transparent electrode (OTE) that is coated with a thin chemically-selective film that preconcnetrates the analyte. The key to adapting this generic sensor to detect TcO4 and Tc complexes lies in the development of chemically-selective films that preconcentrate the analyte and, when necessary, chemically convert it into a complex with electrochemical and spectroscopic properties appropriate for sensing. This review focuses on the general concept of the sensor and the rationale for the selection of the specific components of choice, the development and characterization of the sensor for the different detection modules, the synthesis and characterization of complexes relevant in the detection of technetium, and the progress in the utilization of the sensor module for the effective detection of these complexes.

  4. Investigation of Tc Migration Mechanism During Bulk Vitrification Process Using Re Surrogate

    SciTech Connect (OSTI)

    Kim, Dong-Sang; Bagaasen, Larry M.; Crum, Jarrod V.; Fluegel, Alex; Gallegos, Autumn B.; Martinez, Baudelio; Matyas, Josef; Meyer, Perry A.; Paulsen, Dan; Riley, Brian J.; Schweiger, Michael J.; Stewart, Charles W.; Swoboda, Robert G.; Yeager, John D.

    2006-12-04T23:59:59.000Z

    As a part of Bulk vitrification (BV) performance enhancement tasks, Laboratory scoping tests were performed in FY 2004-2005 to explore possible ways to reduce the amount of soluble Tc in the BV waste package. Theses scoping tests helped identify which mechanisms play an important role in the migration of Tc in the BV process (Hrma et al. 2005 and Kim et al. 2005). Based on the results from these scoping tests, additional tests were identified that will improve the understanding of Tc migration and to clearly identify the dominant mechanisms. The additional activities identified from previous studies were evaluated and prioritized for planning for Tasks 29 and 30 conducted in FY2006. Task 29 focused on the improved understanding of Tc migration mechanisms, and Task 30 focused on identifying the potential process changes that might reduce Tc/Re migration into the castable refractory block (CRB). This report summarizes the results from the laboratory- and crucible-scale tests in the lab for improved Tc migration mechanism understanding utilizing Re as a surrogate performed in Task 29.

  5. Transport coefficients of heavy quarks around $T_c$ at finite quark chemical potential

    E-Print Network [OSTI]

    H. Berrehrah; P. B. Gossiaux; J. Aichelin; W. Cassing; J. M. Torres-Rincon; E. Bratkovskaya

    2014-06-20T23:59:59.000Z

    The interactions of heavy quarks with the partonic environment at finite temperature $T$ and finite quark chemical potential $\\mu_q$ are investigated in terms of transport coefficients within the Dynamical Quasi-Particle model (DQPM) designed to reproduce the lattice-QCD results (including the partonic equation of state) in thermodynamic equilibrium. These results are confronted with those of nuclear many-body calculations close to the critical temperature $T_c$. The hadronic and partonic spatial diffusion coefficients join smoothly and show a pronounced minimum around $T_c$, at $\\mu_q=0$ as well as at finite $\\mu_q$. Close and above $T_c$ its absolute value matches the lQCD calculations for $\\mu_q=0$. The smooth transition of the heavy quark transport coefficients from the hadronic to the partonic medium corresponds to a cross over in line with lattice calculations, and differs substantially from perturbative QCD (pQCD) calculations which show a large discontinuity at $T_c$. This indicates that in the vicinity of $T_c$ dynamically dressed massive partons and not massless pQCD partons are the effective degrees-of-freedom in the quark-gluon plasma.

  6. Measurement of Tc-99 in Savannah River Site High Activity Waste

    SciTech Connect (OSTI)

    DiPrete, D.P.

    2003-03-27T23:59:59.000Z

    Waste cleanup efforts currently underway at the Savannah River Site have created a need to characterize Tc-99 in the various high activity waste matrices currently in Site inventories. The traditional method our laboratory used for analyzing Tc-99 in higher activity matrices was a solvent-solvent extraction method using Aliquat-336 in xylene, which resulted in the problematic generation of mixed waste. In an effort to eliminate the generation of mixed wastes resulting from the Aliquat 336/xylene process, a variety of different separation methodologies have been studied. Eichrom TEVA solid phase extractions using column technology have been employed in a case by case basis over the last several years. More recently, applications using Eichrom TEVA extraction discs and 3M Empore Tc extraction discs have also been explored.

  7. (He-3,d) Reaction to Bound and Quasibound Levels in Tc-93

    E-Print Network [OSTI]

    Kozub, R. L.; Youngblood, David H.

    1971-01-01T23:59:59.000Z

    . W. Nestor, Jr. , T. C. Tucker, and F. B. Malik, Phys. Rev. 169, 27 (1968). PHYSICAL REVIEW C VOLUME 4, NUMBER 2 AUGUST 1971 ( He, d) Reaction to Bound and Quasibound Levels in Tc~ R. L. Kozub and D. H. Youngblood Cyclotron Institute, Texas A 5 M... University, College Station, Texas 77843 (Received 1 March 1971) The Mo( He, d)9 Tc reaction has been studied at 35-MeV bombarding energy. Several T& levels are observed belo~ 6-MeV excitation energy, and evidence is presented for sizable p ?, and f5y2...

  8. The spin exchange interaction effect on Tc equation of anisotropic impure superconductors

    E-Print Network [OSTI]

    P. Udomsamuthirun; R. Supadanaison

    2008-04-10T23:59:59.000Z

    We study the influence of spin exchange interaction of impurity scattering on critical temperature of anisotropic impure superconductors. The model of random nonmagnetic and magnetic impurity are revised to cover the effect of spin exchange interaction . The sign of magnitude of the second-order Born scattering have been changed after consideration the spin exchange interaction effect that also effect to form of Tc equation. We can get the general Tc equation that can be described anisotropic impure superconductors well and cover all model done before.

  9. Silencing of SPC2 Expression Using an Engineered Ribozyme in the Mouse TC-3 Endocrine Cell Line*

    E-Print Network [OSTI]

    Perreault, Jean-Pierre

    Silencing of SPC2 Expression Using an Engineered Ribozyme in the Mouse TC-3 Endocrine Cell Line the distinct roles of a member of this family (SPC2), gene silencing in cultured cells is an ideal approach to establish TC-3 stable cell lines expressing the chimeric tRNAVal - ribozyme transcript targeting SPC2 m

  10. A Lipid-modified Phosphoinositide-specific Phospholipase C (TcPI-PLC) Is Involved in Differentiation of Trypomastigotes to

    E-Print Network [OSTI]

    Singer, Randall

    A Lipid-modified Phosphoinositide-specific Phospholipase C (TcPI-PLC) Is Involved C (PI- PLC) is an important component of the inositol phos- phate/diacylglycerol signaling pathway. A newly discov- ered Trypanosoma cruzi PI-PLC (TcPI-PLC) is lipid modified in its N terminus, targeted

  11. Migrating data from TcSE to DOORS : an evaluation of the T-Plan Integrator software application.

    SciTech Connect (OSTI)

    Post, Debra S. (Sandia National Laboratories, Livermore, CA); Manzanares, David A.; Taylor, Jeffrey L.

    2011-02-01T23:59:59.000Z

    This report describes our evaluation of the T-Plan Integrator software application as it was used to transfer a real data set from the Teamcenter for Systems Engineering (TcSE) software application to the DOORS software application. The T-Plan Integrator was evaluated to determine if it would meet the needs of Sandia National Laboratories to migrate our existing data sets from TcSE to DOORS. This report presents the struggles of migrating data and focuses on how the Integrator can be used to map a data set and its data architecture from TcSE to DOORS. Finally, this report describes how the bulk of the migration can take place using the Integrator; however, about 20-30% of the data would need to be transferred from TcSE to DOORS manually. This report does not evaluate the transfer of data from DOORS to TcSE.

  12. Kit for the selective labeling of red blood cells in whole blood with .sup.9 TC

    DOE Patents [OSTI]

    Srivastava, Suresh C. (Setauket, NY); Babich, John W. (Redhill Surrey, GB2); Straub, Rita (Brookhaven, NY); Richards, Powell (New Bern, NC)

    1992-01-01T23:59:59.000Z

    Disclosed herein are a method and kit for the preparation of .sup.99m Tc labeled red blood cells using whole blood in a closed sterile system containing stannous tin in a form such that it will enter the red blood cells and be available therein for reduction of technetium.

  13. An inhomogeneous Josephson phase in thin-film and high-Tc superconductors

    E-Print Network [OSTI]

    Homes, Christopher C.

    An inhomogeneous Josephson phase in thin-film and high-Tc superconductors Y. Imry a,*, M. Strongin cases inhomogeneities are known to exist near the metal (or superconductor)­insulator transition superconductor) model. The small-grain case behaves like a dirty homogenous metal. It should obey Homes' law

  14. Iron Arsenides--The New Family of High TC Magnetic Superconductors

    E-Print Network [OSTI]

    Weston, Ken

    Iron Arsenides--The New Family of High TC Magnetic Superconductors Jeff Lynn NIST Center Superconductors · (Brief) History of Magnetic Superconductors ­ Magnetic Impurities ­ Long Range Magnetic Order: Coexistence and Competition · Cuprate Superconductors--Highly Correlated Electron Systems ­ Undoped systems

  15. Generalized London free energy for high-Tc vortex lattices Ian Affleck

    E-Print Network [OSTI]

    Franz, Marcel

    Generalized London free energy for high-Tc vortex lattices Ian Affleck Department of Physics-1829 97 50402-4 The London free energy provides a very simple way of studying the vortex lattice that this effect can arise from additional quartic derivative terms in the Ginzburg-Landau GL free energy47 or

  16. ENHANCEMENT OF SUPERCONDUCTING Tc IN Pd-H LIKE COMPOUNDS BY OPTICAL PHONONS

    E-Print Network [OSTI]

    Boyer, Edmond

    1227 ENHANCEMENT OF SUPERCONDUCTING Tc IN Pd-H LIKE COMPOUNDS BY OPTICAL PHONONS J. P. BURGER and D.450 1. Introduction. - The high superconducting tran- sition temperatures recently observed in Pd [1 interaction inhibiting superconductivity in pure Pd. As the density of states in Pd-H is rather similar [5

  17. Current Outlook for 99mTc Distribution Based on Electron Accelerator Production

    SciTech Connect (OSTI)

    Benjamin L. Nelson; W. David Bence; John R. Snyder

    2007-07-01T23:59:59.000Z

    In 1999 a practical example illustrating the economical and reliable production of 99mTc from an accelerator was developed. It included the realistic costs involved in establishing and operating the accelerator facility and the distribution of the 99mTc to regions in Florida. However, the technology was never commercialized. Recent political and economic developments prompted this second look at accelerator produced 99mTc. The practicality of this system in 2007 dollars was established to account for inflation and current demand. The same distribution model and production schedule from the Global 99 study were used. Numbers were found using current rates and costs where possible and indexed estimations when necessary. Though several of the costs increased significantly and the sale price remains at approximately 35/mCi, the unit cost of 99mTc throughput only increased from 12.8/mCi to 15.0/mCi or approximately 17.2% from 1999 to 2007 thus continuing to be economically viable. This study provides ground work for creating business development models at additional locations within the U.S.

  18. Kit for the selective labeling of red blood cells in whole blood with [sup 99]Tc

    DOE Patents [OSTI]

    Srivastava, S.C.; Babich, J.W.; Straub, R.; Richards, P.

    1992-05-26T23:59:59.000Z

    Disclosed herein are a method and kit for the preparation of [sup 99m]Tc labeled red blood cells using whole blood in a closed sterile system containing stannous tin in a form such that it will enter the red blood cells and be available therein for reduction of technetium. No Drawings

  19. New method for the selective labeling of erythrocytes in whole blood with Tc-99m

    DOE Patents [OSTI]

    Srivastava, S.C.; Babich, J.W.; Straub, R.; Richards, P.

    1984-01-27T23:59:59.000Z

    Method and kit are described for the preparation of /sup 99m/Tc labeled red blood cells using whole blood in a closed sterile system containing stannous tin in a form such that it will enter the red blood cells and be available therein for the reduction of technetium.

  20. {sup 99}Tc bioassay by inductively coupled plasma mass spectrometry (ICP-MS)

    SciTech Connect (OSTI)

    Lewis, L.A.

    1998-05-01T23:59:59.000Z

    A means of analyzing {sup 99}Tc in urine by inductively coupled plasma mass spectrometry (ICP-MS) has been developed. Historically, {sup 99}Tc analysis was based on the radiometric detection of the 293 keV E{sub Max} beta decay product by liquid scintillation or gas flow proportional counting. In a urine matrix, the analysis of{sup 99}Tc is plagued with many difficulties using conventional radiometric methods. Difficulties originate during chemical separation due to the volatile nature of Tc{sub 2}O{sub 7} or during radiation detection due to color or chemical quenching. A separation scheme for {sup 99}Tc detection by ICP-MS is given and is proven to be a sensitive and robust analytical alternative. A comparison of methods using radiometric and mass quantitation of {sup 99}Tc has been conducted in water, artificial urine, and real urine matrices at activity levels between 700 and 2,200 dpm/L. Liquid scintillation results based on an external standard quench correction and a quench curve correction method are compared to results obtained by ICP-MS. Each method produced accurate results, however the precision of the ICP-MS results is superior to that of liquid scintillation results. Limits of detection (LOD) for ICP-MS and liquid scintillation detection are 14.67 and 203.4 dpm/L, respectively, in a real urine matrix. In order to determine the basis for the increased precision of the ICP-MS results, the detection sensitivity for each method is derived and measured. The detection sensitivity for the {sup 99}Tc isotope by ICP-MS is 2.175 x 10{sup {minus}7} {+-} 8.990 x 10{sup {minus}9} and by liquid scintillation is 7.434 x 10{sup {minus}14} {+-} 7.461 x 10{sup {minus}15}. A difference by seven orders of magnitude between the two detection systems allows ICP-MS samples to be analyzed for a period of 15 s compared to 3,600 s by liquid scintillation counting with a lower LOD.

  1. Interplay of superconductivity and magnetism in a t-t'-J approach to high Tc cuprates

    E-Print Network [OSTI]

    P. A. Marchetti

    2014-11-07T23:59:59.000Z

    We review a recently proposed mechanism for superconductivity in hole-doped cuprates exhibiting a strong interplay between pairing and antiferromagnetism. Starting from the t-t'-J model for the CuO planes, we show that this interplay can explain in a unified framework the pseudogap phenomenology of the spectral weight of the hole, the hourglass-like structure of the magnetic excitation, the critical exponent of the superfluid density, the relation between the scale of the magnetic resonance and Tc.

  2. Effect of hydrogen on the {beta} transus temperature of TC21 alloy

    SciTech Connect (OSTI)

    Zhu, T.K., E-mail: zhutangkui@sohu.com; Li, M.Q., E-mail: honeymli@nwpu.edu.cn

    2011-09-15T23:59:59.000Z

    Effect of hydrogen on the {beta} transus temperature of TC21 alloy was investigated by metallographic technique and dilatometry. It is found that the {beta} transus temperature is closely related to the hydrogen content. For the hydrogenated TC21 alloy, the starting and finishing temperatures of {alpha} {yields} {beta} phase transition decrease with the increasing of hydrogen content before the hydride precipitates. And the finishing temperature of {alpha} {yields} {beta} phase transition increases as the hydrogen content increases after the hydride precipitates. Furthermore, corresponding inherent mechanisms of the above-mentioned phenomena have been presented according to atomic diffusivity, interface migration and the precipitation of hydride. - Research Highlights: {yields} The {beta} transus temperature of TC21 alloy is closely related to hydrogen content. {yields} The mechanism for effect of hydrogen on the {beta} transus temperature is presented. {yields} Precipitation of hydride has a significant influence on the {beta} transus temperature. {yields} The {alpha}/{beta} interface migration has an important effect on the {beta} transus temperature. {yields} The improvement of atom diffusivity affects the {beta} transus temperature highly.

  3. Novel Approach to Prepare {sup 99m}Tc-Based Multivalent RGD Peptides

    SciTech Connect (OSTI)

    Shuang Liu

    2012-10-24T23:59:59.000Z

    This project presents a novel approach to prepare the {sup 99m}Tc-bridged multivalent RGD (arginine-glycine-aspartate) peptides. This project will focus on fundamentals of {sup 99m}Tc radiochemistry. The main objective of this project is to demonstrate the proof-of-principle for the proposed radiotracers. Once a kit formulation is developed for preparation of the {sup 99m}Tc-bridged multivalent RGD peptides, various tumor-bearing animal models will be used to evaluate their potential for SPECT (single photon-emission computed tomography) imaging of cancer. We have demonstrated that (1) multimerization of cyclic RGD peptides enhances the integrin {alpha}{sub v}{beta}{sub 3} bonding affinity and radiotracer tumor uptake; (2) addition of G{sub 3} or PEG{sub 4} linkers makes it possible for two RGD motifs in 3P-RGD{sub 2} and 3G-RGD{sub 2} to achieve simultaneous integrin {alpha}{sub v}{beta}{sub 3} binding; and (3) multimers are actually bivalent (not multivalent), the presence of extra RGD motifs can enhance the tumor retention time of the radiotracer.

  4. Infrared detection with high-[Tc] bolometers and response of Nb tunnel junctions to picosecond voltage pulses

    SciTech Connect (OSTI)

    Verghese, S.

    1993-05-01T23:59:59.000Z

    Oxide superconductors with high critical temperature [Tc] make sensitive thermometers for several types of infrared bolometers. The authors built composite bolometers with YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta

  5. All-high-Tc superconductor rapid-single-flux-quantum circuit operating S. Shokhor, B. Nadgorny, M. Gurvitch,a)

    E-Print Network [OSTI]

    Nadgorny, Boris

    information in the form of single quanta of magnetic flux, 0 h/2e 2 10 15 Wb, while transferring and process refrigeration. This drawback could be substantially alleviated by using high-Tc superconductors that may allow

  6. The discovery of robust magnetism in a technetium oxide: The structure of CaTcO3

    SciTech Connect (OSTI)

    Avdeev, Maxim [Bragg Institute, ANSTO; Thorogood, Gordon J. [Bragg Institute, ANSTO; Carter, Melody L. [ANSTO; Kennedy, Brendan J. [University of Technology Sydney; Ting, Jimmy [University of Sydney, Australia; Singh, David J [ORNL; Wallwork, Kia S. [Australian Synchrotron

    2011-01-01T23:59:59.000Z

    The technetium perovskite CaTcO{sub 3} has been synthesized. Combining synchrotron X-ray and neutron diffraction, we found that CaTcO{sub 3} is an antiferromagnetic with a surprisingly high Neel temperature of 800 K. The transition to the magnetic state does not involve a structural change, but there is obvious magnetostriction. Electronic structure calculations confirm the experimental results.

  7. Method for the production of {sup 99m}Tc compositions from {sup 99}Mo-containing materials

    DOE Patents [OSTI]

    Bennett, R.G.; Christian, J.D.; Grover, S.B.; Petti, D.A.; Terry, W.K.; Yoon, W.Y.

    1998-09-01T23:59:59.000Z

    An improved method is described for producing {sup 99m}Tc compositions from {sup 99}Mo compounds. {sup 100}Mo metal or {sup 100}MoO{sub 3} is irradiated with photons in a particle (electron) accelerator to ultimately produce {sup 99}MoO{sub 3}. This composition is then heated in a reaction chamber to form a pool of molten {sup 99}MoO{sub 3} with an optimum depth of 0.5--5 mm. A gaseous mixture thereafter evolves from the molten {sup 99}MoO{sub 3} which contains vaporized {sup 99}MoO{sub 3}, vaporized {sup 99m}TcO{sub 3}, and vaporized {sup 99m}TcO{sub 2}. This mixture is then combined with an oxidizing gas (O{sub 2(g)}) to generate a gaseous stream containing vaporized {sup 99m}Tc{sub 2}O{sub 7} and vaporized {sup 99}MoO{sub 3}. Next, the gaseous stream is cooled in a primary condensation stage in the reaction chamber to remove vaporized {sup 99}MoO{sub 3}. Cooling is undertaken at a specially-controlled rate to achieve maximum separation efficiency. The gaseous stream is then cooled in a sequential secondary condensation stage to convert vaporized {sup 99m}Tc{sub 2}O{sub 7} into a condensed {sup 99m}Tc-containing reaction product which is collected. 1 fig.

  8. Method for the production of .sup.99m Tc compositions from .sup.99 Mo-containing materials

    DOE Patents [OSTI]

    Bennett, Ralph G. (Idaho Falls, ID); Christian, Jerry D. (Idaho Falls, ID); Grover, S. Blaine (Idaho Falls, ID); Petti, David A. (Idaho Falls, ID); Terry, William K. (Idaho Falls, ID); Yoon, Woo Y. (Idaho Falls, ID)

    1998-01-01T23:59:59.000Z

    An improved method for producing .sup.99m Tc compositions from .sup.99 Mo compounds. .sup.100 Mo metal or .sup.100 MoO.sub.3 is irradiated with photons in a particle (electron) accelerator to ultimately produce .sup.99 MoO.sub.3. This composition is then heated in a reaction chamber to form a pool of molten .sup.99 MoO.sub.3 with an optimum depth of 0.5-5 mm. A gaseous mixture thereafter evolves from the molten .sup.99 MoO.sub.3 which contains vaporized .sup.99 MoO.sub.3, vaporized .sup.99m TcO.sub.3, and vaporized .sup.99m TcO.sub.2. This mixture is then combined with an oxidizing gas (O.sub.2(g)) to generate a gaseous stream containing vaporized .sup.99m Tc.sub.2 O.sub.7 and vaporized .sup.99 MoO.sub.3. Next, the gaseous stream is cooled in a primary condensation stage in the reaction chamber to remove vaporized .sup.99 MoO.sub.3. Cooling is undertaken at a specially-controlled rate to achieve maximum separation efficiency. The gaseous stream is then cooled in a sequential secondary condensation stage to convert vaporized .sup.99m Tc.sub.2 O.sub.7 into a condensed .sup.99m Tc-containing reaction product which is collected.

  9. Effect of inspiratory resistance and PEEP on /sup 99m/Tc-DTPA clearance

    SciTech Connect (OSTI)

    O'Brodovich, H.; Coates, G.; Marrin, M.

    1986-05-01T23:59:59.000Z

    Experiments were performed to determine the effect of markedly negative pleural pressure (Ppl) or positive end-expiratory pressure (PEEP) on the pulmonary clearance (k) of technetium-99m-labeled diethylenetriaminepentaacetic acid (/sup 99m/Tc-DTPA). A submicronic aerosol containing /sup 99m/Tc-DTPA was insufflated into the lungs of anesthetized intubated sheep. In six experiments k was 0.44 +/- 0.46% (SD)/min during the initial 30 min and was unchanged during the subsequent 30-min interval (k = 0.21 +/- 12%/min) when there was markedly increased inspiratory resistance. A 3-mm-diam orifice in the inspiratory tubing created the resistance. It resulted on average in a 13-cmH2O decrease in inspiratory Ppl. In eight additional experiments sheep were exposed to 2, 10, and 15 cmH2O PEEP (20 min at each level). During 2 cmH2O PEEP k = 0.47 +/- 0.15%/min, and clearance increased slightly at 10 cmH2O PEEP (0.76 +/- 0.28%/min, P less than 0.01). When PEEP was increased to 15 cmH2O a marked increase in clearance occurred (k = 1.95 +/- 1.08%/min, P less than 0.001). The experiments demonstrate that markedly negative inspiratory pressures do not accelerate the clearance of /sup 99m/Tc-DTPA from normal lungs. The effect of PEEP on k is nonlinear, with large effects being seen only with very large increases in PEEP.

  10. Optimizing Cr(VI) and Tc(VII) remediation through nano-scale biomineral engineering

    SciTech Connect (OSTI)

    Cutting, R. S.; Coker, V. S.; Telling, N. D.; Kimber, R. L.; Pearce, C. I.; Ellis, B.; Lawson, R; van der Laan, G.; Pattrick, R.A.D.; Vaughan, D.J.; Arenholz, E.; Lloyd, J. R.

    2009-09-09T23:59:59.000Z

    To optimize the production of biomagnetite for the bioremediation of metal oxyanion contaminated waters, the reduction of aqueous Cr(VI) to Cr(III) by two biogenic magnetites and a synthetic magnetite was evaluated under batch and continuous flow conditions. Results indicate that nano-scale biogenic magnetite produced by incubating synthetic schwertmannite powder in cell suspensions of Geobacter sulfurreducens is more efficient at reducing Cr(VI) than either biogenic nano-magnetite produced from a suspension of ferrihydrite 'gel' or synthetic nano-scale Fe{sub 3}O{sub 4} powder. Although X-ray Photoelectron Spectroscopy (XPS) measurements obtained from post-exposure magnetite samples reveal that both Cr(III) and Cr(VI) are associated with nanoparticle surfaces, X-ray Magnetic Circular Dichroism (XMCD) studies indicate that some Cr(III) has replaced octahedrally coordinated Fe in the lattice of the magnetite. Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) measurements of total aqueous Cr in the associated solution phase indicated that, although the majority of Cr(III) was incorporated within or adsorbed to the magnetite samples, a proportion ({approx}10-15 %) was released back into solution. Studies of Tc(VII) uptake by magnetites produced via the different synthesis routes also revealed significant differences between them as regards effectiveness for remediation. In addition, column studies using a {gamma}-camera to obtain real time images of a {sup 99m}Tc(VII) radiotracer were performed to visualize directly the relative performances of the magnetite sorbents against ultra-trace concentrations of metal oxyanion contaminants. Again, the magnetite produced from schwertmannite proved capable of retaining more ({approx}20%) {sup 99m}Tc(VII) than the magnetite produced from ferrihydrite, confirming that biomagnetite production for efficient environmental remediation can be fine-tuned through careful selection of the initial Fe(III) mineral substrate supplied to Fe(III)-reducing bacteria.

  11. High-Tc superconductivity in entirely end-bonded multi-walled carbon nanotubes

    E-Print Network [OSTI]

    I. Takesue; J. Haruyama; N. Kobayashi; S. Chiashi; S. Maruyama; T. Sugai; H. Shinohara

    2005-12-16T23:59:59.000Z

    We report that entirely end-bonded multi-walled carbon nanotubes (MWNTs) can show superconductivity with the transition temperature Tc as high as 12K that is approximately 40-times larger than those reported in ropes of single-walled nanotubes. We find that emergence of this superconductivity is very sensitive to junction structures of Au electrode/MWNTs. This reveals that only MWNTs with optimal numbers of electrically activated shells, which are realized by the end-bonding, can allow the superconductivity due to inter shell effects.

  12. Electron Microscopy Characterization of Tc-Bearing Metallic Waste Forms- Final Report FY10

    SciTech Connect (OSTI)

    Buck, Edgar C.; Neiner, Doinita

    2010-09-30T23:59:59.000Z

    The DOE Fuel Cycle Research & Development (FCR&D) Program is developing aqueous and electrochemical approaches to the processing of used nuclear fuel that will generate technetium-bearing waste streams. This final report presents Pacific Northwest National Laboratory (PNNL) research in FY10 to evaluate an iron-based alloy waste form for Tc that provides high waste loading within waste form processing limitations, meets waste form performance requirements for durability and the long-term retention of radionuclides and can be produced with consistent physical, chemical, and radiological properties that meet regulatory acceptance requirements for disposal.

  13. Spatially resolved assessment of hepatic function using 99mTc-IDA SPECT

    SciTech Connect (OSTI)

    Wang, Hesheng [Department of Radiation Oncology, University of Michigan, 1500 East Medical Center Drive, Ann Arbor, Michigan 48109 (United States)] [Department of Radiation Oncology, University of Michigan, 1500 East Medical Center Drive, Ann Arbor, Michigan 48109 (United States); Cao, Yue [Department of Radiation Oncology, Radiology, and Biomedical Engineering, University of Michigan, 1500 East Medical Center Drive, Ann Arbor, Michigan 48109 (United States)] [Department of Radiation Oncology, Radiology, and Biomedical Engineering, University of Michigan, 1500 East Medical Center Drive, Ann Arbor, Michigan 48109 (United States)

    2013-09-15T23:59:59.000Z

    Purpose: 99mTc-iminodiacetic acid (IDA) hepatobiliary imaging is usually quantified for hepatic function on the entire liver or regions of interest (ROIs) in the liver. The authors presented a method to estimate the hepatic extraction fraction (HEF) voxel-by-voxel from single-photon emission computed tomography (SPECT)/CT with a 99mTc-labeled IDA agent of mebrofenin and evaluated the spatially resolved HEF measurements with an independent physiological measurement.Methods: Fourteen patients with intrahepatic cancers were treated with radiation therapy (RT) and imaged by 99mTc-mebrofenin SPECT before and 1 month after RT. The dynamic SPECT volumes were with a resolution of 3.9 3.9 2.5 mm{sup 3}. Throughout the whole liver with approximate 50 000 voxels, voxelwise HEF quantifications were estimated and compared between using arterial input function (AIF) from the heart and using vascular input function (VIF) from the spleen. The correlation between mean of the HEFs over the nontumor liver tissue and the overall liver function measured by Indocyanine green clearance half-time (T1/2) was assessed. Variation of the voxelwise estimation was evaluated in ROIs drawn in relatively homogeneous regions of the livers. The authors also examined effects of the time range parameter on the voxelwise HEF quantification.Results: Mean of the HEFs over the liver estimated using AIF significantly correlated with the physiological measurement T1/2 (r= 0.52, p= 0.0004), and the correlation was greatly improved by using VIF (r= 0.79, p < 0.0001). The parameter of time range for the retention phase did not lead to a significant difference in the means of the HEFs in the ROIs. Using VIF and a retention phase time range of 730 min, the relative variation of the voxelwise HEF in the ROIs was 10% 6% of respective mean HEF.Conclusions: The voxelwise HEF derived from 99mTc-IDA SPECT by the deconvolution analysis is feasible to assess the spatial distribution of hepatic function in the liver.

  14. Conceptual design of a new homogeneous reactor for medical radioisotope Mo-99/Tc-99m production

    SciTech Connect (OSTI)

    Liem, Peng Hong [Nippon Advanced Information Service (NAIS Co., Inc.) Scientific Computational Division, 416 Muramatsu, Tokaimura, Ibaraki (Japan); Tran, Hoai Nam [Chalmers University of Technology, Dept. of Applied Physics, Div. of Nuclear Engineering, SE-412 96 Gothenburg (Sweden); Sembiring, Tagor Malem [National Nuclear Energy Agency (BATAN), Center for Reactor Technology and Nuclear Safety, Kawasan Puspiptek, Serpong, Tangerang Selatan, Banten (Indonesia); Arbie, Bakri [PT MOTAB Technology, Kedoya Elok Plaza Blok DA 12, Jl. Panjang, Kebun Jeruk, Jakarta Barat (Indonesia)

    2014-09-30T23:59:59.000Z

    To partly solve the global and regional shortages of Mo-99 supply, a conceptual design of a nitrate-fuel-solution based homogeneous reactor dedicated for Mo-99/Tc-99m medical radioisotope production is proposed. The modified LEU Cintichem process for Mo-99 extraction which has been licensed and demonstrated commercially for decades by BATAN is taken into account as a key design consideration. The design characteristics and main parameters are identified and the advantageous aspects are shown by comparing with the BATAN's existing Mo-99 supply chain which uses a heterogeneous reactor (RSG GAS multipurpose reactor)

  15. DOE Zero Energy Ready Home Case Study: TC Legend, Seattle, WA, Custom Home

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube| Department ofDepartment of EnergyCustom Home| Department of Energy TC

  16. DOE Tour of Zero: The Cedarwood by TC Legend Homes | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 Russian NuclearandJunetrack graphics workDepartment of13 Custom builder TC Legend

  17. DOE Zero Energy Ready Home Case Study 2013: TC Legend, Seattle, WA

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: Theof"WaveInteractionsMaterials | DepartmentEnergyNew TowninvitesTC

  18. Synthesis and characterization of neutral M[sup V]O (M = Tc, Re) amine-thiol complexes containing a pendant phenylpiperidine group

    SciTech Connect (OSTI)

    Francesconi, L.S.; Graczyk, G.; Wehrli, S.; Kung, H.F. (Univ. of Pennsylvania, Philadelphia (United States)); Shaikh, S.N.; McClinton, D.; Liu, S. (State Univ. of New York, NY (United States)); Zubieta, J. (Syracuse Univ., New York, NY (United States))

    1993-07-07T23:59:59.000Z

    The reaction of the racemic bis(amino thio)-phenylpiperidine compound BAT-PPP with [sup 99]TcO[sub 4][sup [minus

  19. Magneto-optical imaging and current distributions in high-{Tc} superconductors

    SciTech Connect (OSTI)

    Polyanskii, A. [Univ. of Wisconsin, Madison, WI (United States). Applied Superconductivity Center]|[Inst. of Solid State Physics, Chernogolovka (Russian Federation); Pashitski, A.; Gurevich, A.; Parrell, J.A.; Larbalestier, D.C. [Univ. of Wisconsin, Madison, WI (United States). Applied Superconductivity Center; Polak, M. [Univ. of Wisconsin, Madison, WI (United States). Applied Superconductivity Center]|[Inst. of Electrical Engineering, Bratislava (Slovakia); Foltyn, S.R.; Arendt, P.N. [Univ. of Wisconsin, Madison, WI (United States). Applied Superconductivity Center]|[Los Alamos National Lab., NM (United States)

    1997-06-01T23:59:59.000Z

    Recent studies on the magneto-optical (MO) imaging of the magnetic flux and current distributions in polycrystalline high-{Tc} superconductors are summarized. The authors studied a wide spectrum of high-{Tc} materials, from single grain boundaries in YBCO bicrystals, to polycrystalline YBCO thick films deposited on an IBAD-buffer layer grown on a polycrystalline Hastelloy substrate, to Bi-2223 tapes. In all cases they found that structural defects (e.g., high-angle grain boundaries, second phase precipitates, microcrack networks, etc.) significantly limit the current-carrying capability. These defects make the magnetic flux distribution highly inhomogeneous, in turn producing granular and percolative current flow. By inverting the Biot-Savart law for thin film and slab geometries, they were able to reconstruct the local current flow patterns around defects and thus identify the current-carrying percolative paths and map the distribution of local critical currents J{sub c}(r). Such studies show that, even in high-J{sub c} materials, the local J{sub c}(r) can vary by a factor 2--10 due to defects. Since the maximum local J{sub c}(r) values can significantly exceed the numbers obtained by transport measurements, it is clear that there are still significant opportunities for raising the J{sub c} of polycrystalline HTS conductors.

  20. Fe(II)- and Sulfide-Facilitated Reduction of 99Tc(VII)O4- in Microbially Reduced Hyporheic Zone Sediments

    SciTech Connect (OSTI)

    Lee, Ji-Hoon; Zachara, John M.; Fredrickson, Jim K.; Heald, Steve M.; McKinley, James P.; Plymale, Andrew E.; Resch, Charles T.; Moore, Dean A.

    2014-07-01T23:59:59.000Z

    Redox-reactive, biogeochemical phases generated by reductive microbial activity in hyporheic zone sediments from a dynamic groundwater-river interaction zone were evaluated for their ability to reduce soluble pertechnetate [99Tc(VII)O4-] to less soluble Tc(IV). The sediments were bioreduced by indigenous microorganisms that were stimulated by organic substrate addition in synthetic groundwater with or without sulfate. In most treatments, 20 mol L-1 initial aqueous Tc(VII) was reduced to near or below detection (3.8210-9 mol L-1) over periods of days to months in suspensions of variable solids concentrations. Native sediments containing significant lithogenic Fe(II) in various phases were, in contrast, unreactive with Tc(VII). The reduction rates in the bioreduced sediments increased with increases in sediment mass, in proportion to weak acid-extractable Fe(II) and sediment-associated sulfide (AVS). The rate of Tc(VII) reduction was first order with respect to both aqueous Tc(VII) concentration and sediment mass, but correlations between specific reductant concentrations and reaction rate were not found. X-ray microprobe measurements revealed a strong correlation between Tc hot spots and Fe-containing mineral particles in the sediment. However, only a portion of Fe-containing particles were Tc-hosts. The Tc-hot spots displayed a chemical signature (by EDXRF) similar to pyroxene. The application of autoradiography and electron microprobe allowed further isolation of Tc-containing particles that were invariably found to be ca 100 m aggregates of primary mineral material embedded within a fine-grained phyllosilicate matrix. EXAFS spectroscopy revealed that the Tc(IV) within these were a combination of a Tc(IV)O2-like phase and Tc(IV)-Fe surface clusters, with a significant fraction of a TcSx-like phase in sediments incubated with SO42-. AVS was implicated as a more selective reductant at low solids concentration even though its concentration was below that required for stoichiometric reduction of Tc(VII). These results demonstrate that composite mineral aggregates may be redox reaction centers in coarse-textured hyporheic zone sediments regardless of the dominant anoxic biogeochemical processes.

  1. ATTP 3-34.80 (FM 3-34.230, FM 5-33, and TC 5-230) GEOSPATIAL ENGINEERING

    E-Print Network [OSTI]

    US Army Corps of Engineers

    ATTP 3-34.80 (FM 3-34.230, FM 5-33, and TC 5-230) July 2010 GEOSPATIAL ENGINEERING DISTRIBUTION-33, and TC 5-230) HEADQUARTERS DEPARTMENT OF THE ARMY Washington, DC 29 July 2010 Geospatial Engineering.................................................................................................vii Chapter 1 GEOSPATIAL ENGINEERING IN SUPPORT OF FULL SPECTRUM OPERATIONS

  2. Increase of Tc in YBa2Cu3O7-03B4 due to an atomic ordering transition within the orthorhombic phase

    E-Print Network [OSTI]

    Boyer, Edmond

    of the (superconducting) order par- ameter... the thermodynamic properties of the superconductor remain unchanged variation 0394Tc of the superconducting temperature for varying 03B4. Compared to the so far measured Tc of high T, superconductors : an increase of T, of about 50 % [1] was observed in YBa2CU307 - 5' possibly

  3. Coal transport on River Labe (Czech Republic) with system pusher tug TR500-barge TC1000

    SciTech Connect (OSTI)

    Danek, A.; Polak, J. [Technical Univ., Ostrava (Czech Republic)

    1995-12-31T23:59:59.000Z

    The power plant Chvaletice (800 MW) has been supplied with energetic coal from the North Bohemian Brown Coal Basin in the section Prosmyky-Chvaletice along the Labe River upstream. Sixty new developed pusher tugs TR 500 in connection with pusher barges TC1000 were set into operation in 1980. Each has two 4rive systems with 208kW turbo-blowed diesel engines, mechanical gear boxes and propellers with Kort nozzles. A new maintenance system of individual aggregates or groups based on reliability characteristics and probability of failure from Weibull distribution was developed. Diagnostic methods for monitoring the state of sealing such groups like piston-cylinder, turbo-blower, injection and propulsion systems were built. The real economic effect of implemented maintenance system represents three quarters of the price of a new pusher tug TR500.

  4. A Universal Intrinsic Scale of Hole Concentration for High-Tc Cuprates

    E-Print Network [OSTI]

    T. Honma; P. H. Hor; H. H. Hsieh; M. Tanimoto

    2004-10-01T23:59:59.000Z

    We have measured thermoelectric power (TEP) as a function of hole concentration per CuO2 layer, Ppl, in Y1-xCaxBa2Cu3O6 (Ppl = x/2) with no oxygen in the Cu-O chain layer. The room-temperature TEP as a function of Ppl, S290(Ppl), of Y1-xCaxBa2Cu3O6 behaves identically to that of La2-zSrzCuO4 (Ppl = z). We argue that S290(Ppl) represents a measure of the intrinsic equilibrium electronic states of doped holes and, therefore, can be used as a common scale for the carrier concentrations of layered cuprates. We shows that the Ppl determined by this new universal scale is consistent with both hole concentration microscopically determined by NQR and the hole concentration macroscopically determined by the Cu valency. We find two characteristic scaling temperatures, TS* and TS2*, in the TEP vs. temperature curves that change systematically with doping. Based on the universal scale, we uncover a universal phase diagram in which almost all the experimentally determined pseudogap temperatures as a function of Ppl fall on two common curves; upper pseudogap temperature defined by the TS* versus Ppl curve and lower pseudogap temperature defined by the TS2* versus Ppl curve. We find that while pseudogaps are intrinsic properties of doped holes of a single CuO2 layer for all high-Tc cuprates, Tc depends on the number of layers, therefore the inter-layer coupling, in each individual system.

  5. New Synthesis Route and Characterization of Siderite (FeCO{sub 3} ) and Coprecipitation of {sup 99}Tc

    SciTech Connect (OSTI)

    Llorens, Isabelle; Fattahi, Massoud; Grambow, Bernd [Laboratoire Subatech, Ecole des Mines de Nantes, 4 rue Alfred Kastler, Site de la Chantrerie, Nantes, 44307 (France)

    2007-07-01T23:59:59.000Z

    Technetium-99 is a long-lived product of nuclear fission. In the ground-waters of European disposal sites Tc is expected to be in the tetravalent state since the geochemical conditions are reducing due to the presence of redox couples such as Fe(II)/Fe(III), and the presence of reducing minerals such as pyrite and siderite (FeCO{sub 3}). Siderite is expected to be formed as well as container corrosion product. Experiments of coprecipitation of Fe{sup 2+} and Tc(IV) were conducted in the laboratory under an inert atmosphere at room temperature. High resolution transmission electron microscopy shows that the co-precipitate is around 3 nm sized particles. Analytical electron microscopy indicates that the precipitate contains 30 atom % of Tc and 70 atom % Fe. The Tc was homogeneously distributed. Selected Area Electron Diffraction does not reveal the formation of siderite, which suggests that the presence of technetium in high concentration inhibit the formation of this phase. (authors)

  6. 1 UNIVERSITA DEGLI STUDI DI MILANO 1m~~sTc.mr;P~;ILWNAI,E

    E-Print Network [OSTI]

    De Cindio, Fiorella

    1 UNIVERSITA DEGLI STUDI DI MILANO 1m~~sTc.mr;P~;ILWNAI,E A TUTTO IL P E R S O W DKENTE E che precedei1collocamento a riposo (in sede di primaapplicazione la domanda poteva essere.4.2009 prot. 13712, deve essere in grado di assicurare la natura e le caratteristiche del contratto e i1

  7. Dimensional crossover in quasi-one-dimensional and high-Tc superconductors E. W. Carlson and D. Orgad

    E-Print Network [OSTI]

    Carlson, Erica

    Dimensional crossover in quasi-one-dimensional and high-Tc superconductors E. W. Carlson and D. Comparison is made with experiments on the high-temperature superconductors, which are electronically quasi in the continuum theory of a quasi-one- dimensional superconductor. This problem is of interest in its own right

  8. Tunneling density of states of high Tc superconductors d-wave BCS model vs. SU(2) slave boson model

    E-Print Network [OSTI]

    Wen, Xiao-Gang

    Tunneling density of states of high Tc superconductors d-wave BCS model vs. SU(2) slave boson model conductance curves in the superconducting state at zero temperature. Comparing the two results obtained via Tunneling spectroscopy has been one of the funda- mental tools in studying the superconducting state

  9. Method and kit for the selective labeling of red blood cells in whole blood with TC-99M

    DOE Patents [OSTI]

    Srivastava, Suresh C. (Setauket, NY); Babich, John W. (Redhill, GB2); Straub, Rita (Brookhaven, NY); Richards, Powell (New Bern, NC)

    1988-01-01T23:59:59.000Z

    Disclosed herein are a method and kit for the preparation of .sup.99m Tc labeled red blood cells using whole blood in a closed sterile system containing stannous tin in a form such that it will enter the red blood cells and be available therein for the reduction of technetium.

  10. Method and kit for the selective labeling of red blood cells in whole blood with Tc-99m

    DOE Patents [OSTI]

    Srivastava, S.C.; Babich, J.W.; Straub, R.; Richards, P.

    1988-07-05T23:59:59.000Z

    Disclosed herein are a method and kit for the preparation of [sup 99m]Tc labeled red blood cells using whole blood in a closed sterile system containing stannous tin in a form such that it will enter the red blood cells and be available for the reduction of technetium. No Drawings

  11. Photophysics and Luminescence Spectroelectrochemistry of [Tc(dmpe)3]+/2+ (dmpe = 1,2-bis(dimethylphosphino)ethane)

    SciTech Connect (OSTI)

    Chatterjee, Sayandev; Del Negro, Andrew S.; Smith, Frances N.; Wang, Zheming; Hightower, Sean E.; Sullivan, Brian P.; Heineman, William R.; Seliskar, Carl J.; Bryan, Samuel A.

    2013-12-05T23:59:59.000Z

    The ligand-to-metal charge transfer (LMCT) excited state luminescence of [Tc(dmpe)3]2+ (dmpe is 1,2-bis-(dimethylphosphino)ethane) has been measured in solution at room temperature, and is compared to its Re analogue. Surprisingly, both [M(dmpe)3]2+* (M = Re, Tc) species have extremely large excited-state potentials (ESPs) as oxidants - the highest for any simple coordination complex of a transition metal. Furthermore, this potential is available using a photon of visible light (calculated for M = Re(Tc); E1/2* = +2.61(2.48) V versus SCE; ?max = 526(585) nm). Open shell TDDFT calculations support the assignment of the lowest energy transition in both the technetium and rhenium complexes to be a doublet-doublet process that involve predominantly LMCT (dmpe-to-metal) character and is in agreement with past assignments for the Re system. As expected for highly oxidizing excited state potentials, quenching is observed for the excited states by both the rhenium and technetium complexes. Stern-Volmer analysis resulted in quenching parameters for both the rhenium and technetium complexes under identical conditions, and are compared using Rehm-Weller analysis. Of particular interest is the fact that both benzene and toluene are oxidized by both the Re and Tc systems.

  12. Method for generating a crystalline .sup.99 MoO.sub.3 product and the isolation .sup.99m Tc compositions therefrom

    DOE Patents [OSTI]

    Bennett, Ralph G. (Idaho Falls, ID); Christian, Jerry D. (Idaho Falls, ID); Kirkham, Robert J. (Blackfoot, ID); Tranter, Troy J. (Idaho Falls, ID)

    1998-01-01T23:59:59.000Z

    An improved method for producing .sup.99m Tc compositions. .sup.100 Mo metal is irradiated with photons in a particle (electron) accelerator to produce .sup.99 Mo metal which is dissolved in a solvent. A solvated .sup.99 Mo product is then dried to generate a supply of .sup.99 MoO.sub.3 crystals. The crystals are thereafter heated at a temperature which will sublimate the crystals and form a gaseous mixture containing vaporized .sup.99m TcO.sub.3 and vaporized .sup.99m TcO.sub.2 but will not cause the production of vaporized .sup.99 MoO.sub.3. The mixture is then combined with an oxidizing gas to generate a gaseous stream containing vaporized .sup.99m Tc.sub.2 O.sub.7. Next, the gaseous stream is cooled to a temperature sufficient to convert the vaporized .sup.99m Tc.sub.2 O.sub.7 into a condensed .sup.99m Tc-containing product. The product has high purity levels resulting from the use of reduced temperature conditions and ultrafine crystalline .sup.99 MoO.sub.3 starting materials with segregated .sup.99m Tc compositions therein which avoid the production of vaporized .sup.99 MoO.sub.3 contaminants.

  13. Method for generating a crystalline {sup 99}MoO{sub 3} product and the isolation {sup 99m}Tc compositions therefrom

    DOE Patents [OSTI]

    Bennett, R.G.; Christian, J.D.; Kirkham, R.J.; Tranter, T.J.

    1998-09-01T23:59:59.000Z

    An improved method is described for producing {sup 99m}Tc compositions. {sup 100}Mo metal is irradiated with photons in a particle (electron) accelerator to produce {sup 99}Mo metal which is dissolved in a solvent. A solvated {sup 99}Mo product is then dried to generate a supply of {sup 99}MoO{sub 3} crystals. The crystals are thereafter heated at a temperature which will sublimate the crystals and form a gaseous mixture containing vaporized {sup 99m}TcO{sub 3} and vaporized {sup 99m}TcO{sub 2} but will not cause the production of vaporized {sup 99}MoO{sub 3}. The mixture is then combined with an oxidizing gas to generate a gaseous stream containing vaporized {sup 99m}Tc{sub 2}O{sub 7}. Next, the gaseous stream is cooled to a temperature sufficient to convert the vaporized {sup 99m}Tc{sub 2}O{sub 7} into a condensed {sup 99m}Tc-containing product. The product has high purity levels resulting from the use of reduced temperature conditions and ultrafine crystalline {sup 99}MoO{sub 3} starting materials with segregated {sup 99m}Tc compositions therein which avoid the production of vaporized {sup 99}MoO{sub 3} contaminants. 1 fig.

  14. Development of a termination for the 77kV-class high Tc superconducting power cable

    SciTech Connect (OSTI)

    Shimonosono, T.; Nagaya, S. [Chubu Electric Power Co., Inc., Nagoya (Japan)] [Chubu Electric Power Co., Inc., Nagoya (Japan); Masuda, T.; Isojima, S. [Sumitomo Electric Industries Ltd., Osaka (Japan)] [Sumitomo Electric Industries Ltd., Osaka (Japan)

    1997-01-01T23:59:59.000Z

    A termination for 77kV-class high Tc superconducting power cables was designed and fabricated. The termination is insulated with SF6 gas, nitrogen gas and liquid nitrogen and is cooled with liquid nitrogen. The current lead has a cross sectional area altered along its axis in order to decrease the heat inlet and to prevent SF6 gas from liquefying. The current lead is insulated with Ethylene-propylene Rubber (EPR) because it passes through nitrogen gas which has low dielectric strength in comparison with liquid nitrogen and SF6 gas. 200A AC current and 70 kV AC voltage to ground were successfully applied simultaneously for 40 hours in total. The measured heat loss of the termination, 9W is in good agreement with the calculated value. As the next step, the applied voltage was increased and the termination was confirmed to withstand the voltage up to 120 kV AC and 400kV Imp to ground.

  15. New Diluted Ferromagnetic Semiconductor isostructural to 122 type iron pnictide superconductor with TC up to 180 K

    E-Print Network [OSTI]

    K. Zhao; Z. Deng; X. C. Wang; W. Han; J. L. Zhu; X. Li; Q. Q. Liu; R. C. Yu; T. Goko; B. Frandsen; Lian Liu; Fanlong Ning; Y. J. Uemura; H. Dabkowska; G. M. Luke; H. Luetkens; E. Morenzoni; S. R. Dunsiger; A. Senyshyn; P. Bni; C. Q. Jin

    2013-03-28T23:59:59.000Z

    Diluted magnetic semiconductors (DMS) have received much attention due to its potential applications to spintronics devices. A prototypical system (Ga,Mn)As has been widely studied since 1990s. The simultaneous spin and charge doping via hetero-valence (Ga3+,Mn2+) substitution, however, resulted in severely limited solubility without availability of bulk specimens. Previously we synthesized a new diluted ferromagnetic semiconductor of bulk Li(Zn,Mn)As with Tc up to 50K, where isovalent (Zn,Mn) spin doping was separated from charge control via Li concentrations. Here we report the synthesis of a new diluted ferromagnetic semiconductor (Ba1-xKx)(Zn1-yMny)2As2, isostructural to iron 122 system, where holes are doped via (Ba2+, K1+), while spins via (Zn2+,Mn2+) substitutions. Bulk samples with x=0.1-0.3 and y=0.05-0.15 exhibit ferromagnetic order with TC up to 180K, comparable to that of record high Tc for Ga(MnAs), significantly enhanced than Li(Zn,Mn)As. Moreover the (Ba,K)(Zn,Mn)2As2 shares the same 122 crystal structure with semiconducting BaZn2As2, antiferromagnetic BaMn2As2, and superconducting (Ba,K)Fe2As2, which makes them promising to the development of multilayer functional devices.

  16. T Cell Receptor Internalization from the Immunological Synapse Is Mediated by TC21 and RhoG GTPase-Dependent Phagocytosis

    E-Print Network [OSTI]

    Cemerski, Saso

    The immunological synapse (IS) serves a dual role for sustained T cell receptor (TCR) signaling and for TCR downregulation. TC21 (Rras2) is a RRas subfamily GTPase that constitutively associates with the TCR and is implicated ...

  17. Pertechnetate (TcO4-) reduction by reactive ferrous iron forms in naturally anoxic, redox transition zone sediments from the Hanford Site, USA

    SciTech Connect (OSTI)

    Peretyazhko, Tetyana; Zachara, John M.; Kukkadapu, Ravi K.; Heald, Steve M.; Kutnyakov, Igor V.; Resch, Charles T.; Arey, Bruce W.; Wang, Chong M.; Kovarik, Libor; Phillips, Jerry L.; Moore, Dean A.

    2012-09-01T23:59:59.000Z

    Technetium is an important environmental contaminant introduced by the processing and disposal of irradiated nuclear fuel and atmospheric nuclear tests. Under oxic conditions technetium is soluble and exists as pertechnatate anion (TcO4-), while under anoxic conditions Tc is usually insoluble and exists as precipitated Tc(IV). Here we investigated abiotic Tc(VII) reduction in mineralogically heterogeneous, Fe(II)-containing sediments. The sediments were collected from a 55 m borehole that sampled a semi-confined aquifer at the Hanford Site, USA that contained a dramatic redox transition zone. One oxic facies (18.0-18.3 m) and five anoxic facies (18.3-18.6 m, 30.8-31.1 m, 39.0-39.3 m, 47.2-47.5 m and 51.5-51.8 m) were selected for this study. Chemical extractions, X-ray diffraction, electron microscopy, and Mssbauer spectroscopy were applied to characterize the Fe(II) mineral suite that included: Fe(II)-phyllosilicates, pyrite, magnetite and siderite. The Fe(II) mineral phase distribution differed between the sediments. Sediment suspensions were adjusted to the same 0.5 M HCl extracted Fe(II) concentration (0.6 mM) for Tc(VII) reduction experiments. Aqueous Fe was low in all sediment suspensions (<2 ?M) and below the Fe(II)aq detection limit (10 ?M). Technetium(VII) reduction occurred in all anoxic sediments at depths greater than 18.3 m and reaction time differed significantly between the sediments (8-219 d). Mssbauer analysis of the Tc-reacted, 30.8-31.1 m sediment confirmed that Tc(VII) was reduced by solid-phase Fe(II), with siderite and Fe(II)-containing phyllosilicates implicated as redox reactive phases. Technetium-XAS analysis demonstrated that Tc associated with sediments was in the Tc(IV) valence state and immobilized as clusters of a TcO2nH2O-like phase. The speciation of redox product Tc(IV) was not affected by reduction rate or Fe(II) mineralogy.

  18. Infrared detection with high-{Tc} bolometers and response of Nb tunnel junctions to picosecond voltage pulses

    SciTech Connect (OSTI)

    Verghese, S.

    1993-05-01T23:59:59.000Z

    Oxide superconductors with high critical temperature {Tc} make sensitive thermometers for several types of infrared bolometers. The authors built composite bolometers with YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} thermometers on sapphire substrates which have higher sensitivity than competing thermal detectors which operate at temperatures above 77 K. A 1 x 1 mm bolometer with gold black serving as the radiation absorber has useful sensitivity for wavelengths 20--100 {mu}m. A 3 x 3 mm bolometer with a bismuth film as the absorber operates from 20--100 {mu}m. High-{Tc} bolometers which are fabricated with micromachining techniques on membranes of Si or Si{sub 3}N{sub 4} have potential application to large-format arrays which are used for infrared imaging. A nonisothermal high-{Tc} bolometer can be fabricated on a membrane of yttria-stabilized zirconia (YSZ) which is in thermal contact with the heat sink along the perimeter of the membrane. A thermal analysis indicates that the YSZ membrane bolometer can have improved sensitivity compared to the sapphire bolometer for spectrometer applications. The quasiparticle tunneling current in a superconductor-insulator-superconductor (SIS) junction is highly nonlinear in the applied voltage. The authors have made the first measurement of the linear response of the quasiparticle current in a Nb/AlO{sub x}/Nb junction over a broad bandwidth from 75--200 GHz. Nonlinear measurements made with these pulses may provide information about the quasiparticle lifetime. Preliminary data from such measurements are presented.

  19. Fiscal Year 2010 Summary Report on the Epsilon-Metal Phase as a Waste Form for 99 Tc

    SciTech Connect (OSTI)

    Strachan, Denis M.; Crum, Jarrod V.; Buck, Edgar C.; Riley, Brian J.; Zumhoff, Mac R.

    2010-09-30T23:59:59.000Z

    Epsilon metal (?-metal) is generated in nuclear fuel during irradiation. This metal consists of Pd, Ru, Rh, Mo, and some Te. These accumulate at the UO2 grain boundaries as small (ca 5 m) particles. These metals have limited solubility in the acid used to dissolve fuel during reprocessing and in typical borosilicate glass. These must be treated separately to improve overall waste loading in glass. This low solubility and their survival in 2 Gy-old natural reactors led us to investigate them as a waste form for the immobilization of 99Tc and 107Pd, two very long-lived isotopes.

  20. Measurement of infarct size using single photon emission computed tomography and /sup 99m/Tc pyrophosphate: a description of the method and comparison with patient prognosis

    SciTech Connect (OSTI)

    Holman, B.L.; Goldhaber, S.Z.; Kirsch, C.M.; Polak, J.F.; Friedman, B.J.; English, R.J.; Wynne, J.

    1982-09-01T23:59:59.000Z

    The application of dual tracer transaxial emission computed tomography of the heart was studied with use of /sup 99m/Tc pyrophosphate and /sup 99m/Tc-labeled red blood cells for measuring infarct size in 20 patients with acute myocardial infarction and 10 without infarction. Imaging was performed with a standard gamma camera and with a multidetector transaxial emission computed tomographic body scanner 3 hours after injection of /sup 99m/Tc pyrophosphate. Immediately after the scanning procedure, /sup 99m/Tc pertechnetate was injected to label red blood cells, and the scanning protocol was repeated. /sup 99m/Tc pyrophosphate was detected in the anterior wall with involvement of the interventricular septum or lateral wall in patients with electrocardiographic criteria for anterior infarction, whereas uptake was detected in the diaphragmatic left ventricular wall with involvement of the posterior, posteroseptal or posterolateral left ventricle or of the right ventricle in patients with electrocardiographic criteria for inferior or posterior infarction. Infarct size measured from transaxial images ranged from 14.0 to 117.0 g in weight. There was a direct relation between infarct size and patient prognosis in that, of the 13 patients with infarct greater than 40 g, 11 (85 percent) had complications, whereas only 2 (29 percent) of 7 patients with an infarct less than 40 g had complications during a follow-up period averaging 17.8 months (p less than 0.05).

  1. Assessment of RELAP/MOD3 using BETHSY 6.2TC 6-inch cold leg side break comparative test

    SciTech Connect (OSTI)

    Chung, Young-Jong; Jeong, Jae-Jun; Chang, Won-Pyo; Kim, Dong-Su [Korea Atomic Energy Research Institute, Yusung, Taejon (Korea, Republic of)] [and others

    1996-10-01T23:59:59.000Z

    This report presents the results of the RELAP5/MOD3 Version 7j assessment on BETHSY 6.2TC. BETHSY 6.2TC test corresponding to a six inch cold leg break LOCA of the Pressurizer Water Reactor(PWR). The primary objective of the test was to provide reference data of two facilities of different scales (BETHSY and LSTF facility). On the other hand, the present calculation aims at analysis of RELAP5/N4OD3 capability on the small break LOCA simulation, The results of calculation have shown that the RELAP5/MOD3 reasonably predicts occurrences as well as trends of the major phenomena such as primary pressure, timing of loop seal clearing, liquid hold up, etc. However, some disagreements also have been found in the predictions of loop seal clearing, collapsed core water level after loop seal clearing, and accumulator injection behaviors. For better understanding of discrepancies in same predictions, several sensitivity calculations have been performed as well. These include the changes of two-phase discharge coefficient at the break junction and some corrections of the interphase drag term. As result, change of a single parameter has not improved the overall predictions and it has been found that the interphase drag model has still large uncertainties.

  2. NMR characterization of sulphur substitution effects in the KxFe2-ySe2-zSz high-Tc superconductor

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Torchetti, D. A.; Imai, T.; Lei, H. C.; Petrovic, C.

    2012-04-01T23:59:59.000Z

    We present a?? Se NMR study of the effect of S substitution in the high-Tc superconductor KxFe2-ySe2-zSz in a temperature range up to 250 K. We examine two S concentrations, with z=0.8 (Tc~ 26 K) and z=1.6 (nonsuperconducting). The samples containing sulphur exhibit broader NMR line shapes than the KxFe?Se? sample due to local disorder in the Se environment. Our Knight shift ??K data indicate that in all samples, uniform spin susceptibility decreases with temperature, and that the magnitude of the Knight shift itself decreases with increased S concentration. In addition, S substitution progressively suppresses low-frequency spin fluctuations. None ofmorethe samples exhibit an enhancement of low-frequency antiferromagnetic spin fluctuations near Tc in 1/T?T, as seen in FeSe.less

  3. NMR characterization of sulphur substitution effects in the KxFe2-ySe2-zSz high-Tc superconductor

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Torchetti, D. A.; Imai, T.; Lei, H. C.; Petrovic, C.

    2012-04-01T23:59:59.000Z

    We present a?? Se NMR study of the effect of S substitution in the high-Tc superconductor KxFe2-ySe2-zSz in a temperature range up to 250 K. We examine two S concentrations, with z=0.8 (Tc~ 26 K) and z=1.6 (nonsuperconducting). The samples containing sulphur exhibit broader NMR line shapes than the KxFe?Se? sample due to local disorder in the Se environment. Our Knight shift ??K data indicate that in all samples, uniform spin susceptibility decreases with temperature, and that the magnitude of the Knight shift itself decreases with increased S concentration. In addition, S substitution progressively suppresses low-frequency spin fluctuations. None of the samples exhibit an enhancement of low-frequency antiferromagnetic spin fluctuations near Tc in 1/T?T, as seen in FeSe.

  4. Evidence for a new excitation at the interface between a high-Tc superconductor and a topological insulator

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Zareapour, Parisa; Xu, Zhijun; Hayat, Alex; Zhao, Shu Yang F.; Kreshchuk, Michael; Lee, Yong Kiat; Reijnders, Anjan A.; Jain, Achint; Liu, T. S.; Gu, G. D.; et al

    2014-12-01T23:59:59.000Z

    High-temperature superconductors exhibit a wide variety of novel excitations. If contacted with a topological insulator, the lifting of spin rotation symmetry in the surface states can lead to the emergence of unconventional superconductivity and novel particles. In pursuit of this possibility, we fabricated high critical-temperature (Tc ~ 85 K) superconductor/topological insulator (Bi?Sr?CaCu?O???/Bi?Te?Se) junctions. Below 75 K, a zero-bias conductance peak (ZBCP) emerges in the differential conductance spectra of this junction. The magnitude of the ZBCP is suppressed at the same rate for magnetic fields applied parallel or perpendicular to the junction. Furthermore, it can still be observed and does notmoresplit up to at least 8.5 T. The temperature and magnetic field dependence of the excitation we observe appears to fall outside the known paradigms for a ZBCP.less

  5. Evidence for a new excitation at the interface between a high-Tc superconductor and a topological insulator

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Zareapour, Parisa [Univ. of Toronto, ON (Canada); Xu, Zhijun [Brookhaven National Lab. (BNL), Upton, NY (United States); Hayat, Alex [Univ. of Toronto, ON (Canada); Zhao, Shu Yang F. [Univ. of Toronto, ON (Canada); Kreshchuk, Michael [Univ. of Toronto, ON (Canada); Lee, Yong Kiat [Univ. of Toronto, ON (Canada); Reijnders, Anjan A. [Montana Instruments, Bozeman, MT (United States); Jain, Achint [Univ. of Toronto, ON (Canada); Liu, T. S. [Brookhaven National Lab. (BNL), Upton, NY (United States); North Univ. of China (China); Gu, G. D. [Brookhaven National Lab. (BNL), Upton, NY (United States); Jia, Shuang [Princeton Univ., NJ (United States); Cava, Robert J. [Princeton Univ., NJ (United States); Burch, Kenneth S. [Univ. of Toronto, ON (Canada); Boston College, Chestnut Hill, MA (United States)

    2014-12-01T23:59:59.000Z

    High-temperature superconductors exhibit a wide variety of novel excitations. If contacted with a topological insulator, the lifting of spin rotation symmetry in the surface states can lead to the emergence of unconventional superconductivity and novel particles. In pursuit of this possibility, we fabricated high critical-temperature (Tc ~ 85 K) superconductor/topological insulator (Bi?Sr?CaCu?O???/Bi?Te?Se) junctions. Below 75 K, a zero-bias conductance peak (ZBCP) emerges in the differential conductance spectra of this junction. The magnitude of the ZBCP is suppressed at the same rate for magnetic fields applied parallel or perpendicular to the junction. Furthermore, it can still be observed and does not split up to at least 8.5 T. The temperature and magnetic field dependence of the excitation we observe appears to fall outside the known paradigms for a ZBCP.

  6. Reduction of Fe(III), Cr(VI), U(VI), and Tc(VII) by Deinococcus radiodurans R1

    SciTech Connect (OSTI)

    Fredrickson, J.K.; Kostandarithes, H.M.; Li, S.W.; Plymake, A.E.; Daly, M.J.

    2000-05-01T23:59:59.000Z

    Deinococcus radiodurans is an exceptionally radiation-resistant microorganism capable of surviving acute exposures to ionizing radiation doses of 15,000 Gy and previously described as having a strictly aerobic respiratory metabolism. Under strict anaerobic conditions, D. radiodurans R1 reduced Fe(III)-nitrilotriacetic acid coupled to the oxidation of lactate to CO{sub 2} and acetate but was unable to link this process to growth. D. radiodurans reduced the humic acid analog anthraquinone-2,6-disulfonate (AQDS) to its dihydroquinone form, AH{sub 2}DS, which subsequently transferred electrons to the Fe(III) oxides hydrous ferric oxide and goethite via a previously described electron shuttle mechanism. D. radiodurans reduced the solid-phase Fe(III) oxides in the presence of either 0.1 mM AQDS or leonardite humic acids (2 mg ml{sup {minus}1}) but not in their absence. D. radiodurans also reduced U(VI) and Tc(VII) in the presence of AQDS. In contrast, Cr(VI) was directly reduced in anaerobic cultures with lactate although the rate of reduction was higher in the presence of AQDS. The results are the first evidence that D. radiodurans can reduce Fe(III) coupled to the oxidation of lactate or other organic compounds. Also, D. radiodurans, in combination with humic acids or synthetic electron shuttle agents, can reduce U and Tc and thus has potential applications for remediation of metal- and radionuclide-contaminated sites where ionizing radiation or other DNA-damaging agents may restrict the activity of more sensitive organisms.

  7. Jing Wang, Zeying Ren, and C. T.-C. Nguyen, "1.14-GHz Self-Aligned Vibrating Micromechanical Disk Resonator" for consideration by MTT-IMS'03

    E-Print Network [OSTI]

    Nguyen, Clark T.-C.

    measured results, this paper formulates an equivalent electrical circuit model that accurately predicts, and fabri- cation of self-aligned disk resonators, this paper formulates an equivalent circuit modelJing Wang, Zeying Ren, and C. T.-C. Nguyen, "1.14-GHz Self-Aligned Vibrating Micromechanical Disk

  8. > Web Developer Position at the T.C. Chan Center for Building Simulation and Energy > Needed Immediately: Full Time Web Developer.

    E-Print Network [OSTI]

    Plotkin, Joshua B.

    > > Web Developer Position at the T.C. Chan Center for Building Simulation and Energy Studies. > Needed Immediately: Full Time Web Developer. > > * The web developer should have a BA of professional experience developing web based applications is required. Experience with web design is a must

  9. The impact of tropical cyclones (TC) on global climate is still debated. They rapidly mix the water column beneath them, bringing cold water to the surface.

    E-Print Network [OSTI]

    Jones, Peter JS

    of Climate, 21, 638 Sriver & Huber, 2007, Observational evidence for an ocean heat pump induced by tropicalThe impact of tropical cyclones (TC) on global climate is still debated. They rapidly mix the water column beneath them, bringing cold water to the surface. One way to parameterise this process

  10. Sclerosing angiomatoid nodular transformation of the spleen: CT, MR, PET, and 99mTc-sulfur colloid SPECT CT findings with gross and histopathological correlation

    E-Print Network [OSTI]

    Thacker, Curtis; Korn, Ronald; Millstine, John; Harvin, Howard; Lier Ribbink, Jeffrey A.; Gotway, Michael B.

    2010-01-01T23:59:59.000Z

    computed tomography-CT (FDG-PET CT) survey which revealed aof the spleen: CT, MR, PET, and 99m Tc-sulfur colloid SPECTT2, no enhancement US CT MR FDG-PET N/A uptake N/A N/A N/A

  11. d.c. sputtering elaboration of thin films of the high-Tc superconductor YBa2Cu3O7-x: evidence for strong film-substrate interactions

    E-Print Network [OSTI]

    Boyer, Edmond

    257 d.c. sputtering elaboration of thin films of the high-Tc superconductor YBa2Cu3O7-x: evidence thermique mis en oeuvre, apparat clairement. Abstract. 2014 Superconducting thin films of YBa2Cu3O7-x have3O7-x, a number of foreign elements were diluted in sintered samples of the superconducting matrix

  12. Prototype Development of Remote Operated Hot Uniaxial Press (ROHUP) to Fabricate Advanced Tc-99 Bearing Ceramic Waste Forms - 13381

    SciTech Connect (OSTI)

    Alaniz, Ariana J.; Delgado, Luc R.; Werbick, Brett M. [University of Nevada - Las Vegas, Howard R. Hughes College of Engineering, 4505 S. Maryland Parkway, Box 454009, Las Vegas, NV 89154-4009 (United States)] [University of Nevada - Las Vegas, Howard R. Hughes College of Engineering, 4505 S. Maryland Parkway, Box 454009, Las Vegas, NV 89154-4009 (United States); Hartmann, Thomas [University of Nevada - Las Vegas, Harry Reid Canter, 4505 S. Maryland Parkway, Box 454009, Las Vegas, NV 89154-4009 (United States)] [University of Nevada - Las Vegas, Harry Reid Canter, 4505 S. Maryland Parkway, Box 454009, Las Vegas, NV 89154-4009 (United States)

    2013-07-01T23:59:59.000Z

    The objective of this senior student project is to design and build a prototype construction of a machine that simultaneously provides the proper pressure and temperature parameters to sinter ceramic powders in-situ to create pellets of rather high densities of above 90% (theoretical). This ROHUP (Remote Operated Hot Uniaxial Press) device is designed specifically to fabricate advanced ceramic Tc-99 bearing waste forms and therefore radiological barriers have been included in the system. The HUP features electronic control and feedback systems to set and monitor pressure, load, and temperature parameters. This device operates wirelessly via portable computer using Bluetooth{sup R} technology. The HUP device is designed to fit in a standard atmosphere controlled glove box to further allow sintering under inert conditions (e.g. under Ar, He, N{sub 2}). This will further allow utilizing this HUP for other potential applications, including radioactive samples, novel ceramic waste forms, advanced oxide fuels, air-sensitive samples, metallic systems, advanced powder metallurgy, diffusion experiments and more. (authors)

  13. Robot learning [TC Spotlight

    E-Print Network [OSTI]

    Tedrake, Russell Louis

    Creating autonomous robots that can learn to act in unpredictable environments has been a long-standing goal of robotics, artificial intelligence, and the cognitive sciences. In contrast, current commercially available ...

  14. High Tc Superconductivity

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School football High School football Fancy footwork by C. Kim (SSRL),

  15. High-Tc Superconductor

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School football High School footballHigh-Pressure MOFDonghui Lu, Kyle

  16. On the stabilization of A-15 Nb3Ge with high Tc's F. Weiss, O. Demolliens, R. Madar, J. P. Senateur and R. Fruchart

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1137 On the stabilization of A-15 Nb3Ge with high Tc's F. Weiss, O. Demolliens, R. Madar, J. P (Reçu le 21 novembre 1983, accepté le 12 mars 1984) Résumé. 2014 Le composé supraconducteur Nb3Ge de hypothèse selon laquelle le composé Nb3Ge st0153chiométrique de température critique élevée est stabilisé

  17. Hyperemic peripheral red marrow in a patient with sickle cell anemia demonstrated on Tc-99m labeled red blood cell venography

    SciTech Connect (OSTI)

    Heiden, R.A.; Locko, R.C.; Stent, T.R. (Columbia Univ. College of Physicians and Surgeons, New York, NY (USA))

    1991-03-01T23:59:59.000Z

    A 25-year-old gravid woman, homozygous for sickle cell anemia, with a history of recent deep venous thrombosis, was examined using Tc-99m labeled red blood cell venography for recurrent thrombosis. Although negative for thrombus, the study presented an unusual incidental finding: the patient's peripheral bone marrow was hyperemic in a distribution consistent with peripheral red bone marrow expansion. Such a pattern has not been documented before using this technique. This report supports other literature that has demonstrated hyperemia of peripheral red bone marrow in other hemolytic anemias. This finding may ultimately define an additional role of scintigraphy in assessing the pathophysiologic status of the sickle cell patient.

  18. Predictive Models for Regional Hepatic Function Based on 99mTc-IDA SPECT and Local Radiation Dose for Physiologic Adaptive Radiation Therapy

    SciTech Connect (OSTI)

    Wang, Hesheng, E-mail: hesheng@umich.edu [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States); Feng, Mary [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States); Frey, Kirk A. [Department of Radiology, University of Michigan, Ann Arbor, Michigan (United States); Ten Haken, Randall K.; Lawrence, Theodore S. [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States); Cao, Yue [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States); Department of Radiology, University of Michigan, Ann Arbor, Michigan (United States); Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan (United States)

    2013-08-01T23:59:59.000Z

    Purpose: High-dose radiation therapy (RT) for intrahepatic cancer is limited by the development of liver injury. This study investigated whether regional hepatic function assessed before and during the course of RT using 99mTc-labeled iminodiacetic acid (IDA) single photon emission computed tomography (SPECT) could predict regional liver function reserve after RT. Methods and Materials: Fourteen patients treated with RT for intrahepatic cancers underwent dynamic 99mTc-IDA SPECT scans before RT, during, and 1 month after completion of RT. Indocyanine green (ICG) tests, a measure of overall liver function, were performed within 1 day of each scan. Three-dimensional volumetric hepatic extraction fraction (HEF) images of the liver were estimated by deconvolution analysis. After coregistration of the CT/SPECT and the treatment planning CT, HEF doseresponse functions during and after RT were generated. The volumetric mean of the HEFs in the whole liver was correlated with ICG clearance time. Three models, dose, priori, and adaptive models, were developed using multivariate linear regression to assess whether the regional HEFs measured before and during RT helped predict regional hepatic function after RT. Results: The mean of the volumetric liver HEFs was significantly correlated with ICG clearance half-life time (r=?0.80, P<.0001), for all time points. Linear correlations between local doses and regional HEFs 1 month after RT were significant in 12 patients. In the priori model, regional HEF after RT was predicted by the planned dose and regional HEF assessed before RT (R=0.71, P<.0001). In the adaptive model, regional HEF after RT was predicted by regional HEF reassessed during RT and the remaining planned local dose (R=0.83, P<.0001). Conclusions: 99mTc-IDA SPECT obtained during RT could be used to assess regional hepatic function and helped predict post-RT regional liver function reserve. This could support individualized adaptive radiation treatment strategies to maximize tumor control and minimize the risk of liver damage.

  19. Application of Surface Analysis Methods to Nanomaterials: Summaryof ISO/TC 201 Technical Report: ISO 14187:2011 -Surface Chemical Analysis- Characterization of Nanomaterials

    SciTech Connect (OSTI)

    Baer, Donald R.

    2012-09-01T23:59:59.000Z

    ISO Technical Report (TR) 14187 provides an introduction to (and examples of) the information that can be obtained about nanostructured materials using surface-analysis tools. In addition, both general issues and challenges associated with characterising nanostructured materials and the specific opportunities and challenges associated with individual analytical methods are identified. As the size of objects or components of materials approaches a few nanometres, the distinctions among 'bulk', 'surface' and 'particle' analysis blur. This Technical Report focuses on issues specifically relevant to surface chemical analysis of nanostructured materials. The report considers a variety of analysis methods but focuses on techniques that are in the domain of ISO/TC 201 including Auger electron spectroscopy, X-ray photoelectron spectroscopy, secondary ion mass spectrometry, and scanning probe microscopy. Measurements of nanoparticle surface properties such as surface potential that are often made in a solution are not discussed.

  20. Applying distributions of hydraulic conductivity for anisotropic systems and applications to Tc Transport at the U.S. Department of Energy Hanford Site

    SciTech Connect (OSTI)

    Allen G Hunt

    2008-06-09T23:59:59.000Z

    43Tc99 is spreading mostly laterally through the U.S. Department of Energy Hanford site sediments. At higher tensions in the unsaturated zone, the hydraulic conductivity may be strongly anisotropic as a consequence of finer soils to retain more water than coarser ones, and for these soils to have been deposited primarily in horizontal structures. We have tried to develop a consistent modeling procedure that could predict the behavior of Tc plumes. Our procedure consists of: (1) Adapting existing numerical recipes based on critical path analysis to calculate the hydraulic conductivity, K, as a function of tension, h, (2) Statistically correlating the predicted K at various values of the tension with fine content, (3) Seeking a tension value, for which the anisotropy and the horizontal K values are both sufficiently large to accommodate multi-kilometer spreading, (4) Predicting the distribution of K values for vertical flow as a function of system support volume, (5) Comparing the largest likely K value in the vertical direction with the expected K in the horizontal direction, (6) Finding the length scale at which the two K values are roughly equal, (7) Comparing that length scale with the horizontal spreading of the plume. We find that our predictions of the value of the tension at which the principle spreading is likely occurring compares very well with experiment. However, we seem to underestimate the physical length scale at which the predominantly horizontal spreading begins to take on significant vertical characteristics. Our data and predictions would seem to indicate that this should happen after horizontal transport of somewhat over a km, but the chiefly horizontal transport appears to continue out to scales of 10km or so.

  1. Nuclear magnetic resonance: Its role as a microscopic probe of the electronic and magnetic properties of High-{Tc} superconductors and related materials

    SciTech Connect (OSTI)

    Suh, Byoung Jin

    1995-12-27T23:59:59.000Z

    NMR experiments are reported for Sr{sub 2}CuO{sub 2}Cl{sub 2}, HgBa{sub 2}CuO{sub 4+d}, YNi{sub 2}B{sub 2}C and YBa{sub 2}Cu{sub 3}O{sub 7}. NMR studies typify three different aspects of microscopic properties of HTSC. In non-superconducting antiferromagnetic (AF) prototype Sr{sub 2}CuO{sub 2}Cl{sub 2}, we used NMR to investigate Cu{sup 2+} correlated spin dynamics and AF phase transition in CuO2 layers. In the superconductors, we used NMR both to investigate the electronic properties of the Fermi-liquid in normal and superconducting states and to investigate flux lattice and flux-line dynamics in the superconducting state in presence of magnetic field. A summary of each study is given: {sup 35}Cl NMR was measured in Sr{sub 2}CuO{sub 2}Cl{sub 2} single crystals with T{sub N}=257K. {sub 35}Cl NMR relaxation rates showed crossover of Cu{sup 2+} spin dynamics from Heisenberg to XY-like correlation at 290 K well above T{sub N}. A field-dependent T{sub N} for H{perpendicular}c was observed and explained by a field-induced Ising-like anisotropy in ab plane. {sup 199}Hg NMR was measured in HgBa{sub 2}CuO{sub 4+d}. Properties of the Fermi-liquid are characterized by a single-spin fluid picture and opening of a spin pseudo-gap at q=0 above {Tc}. Below {Tc}, spin component of Knight shift decreases rapidly in agreement with prediction for d-wave pairing scheme. {sup 11}B and {sup 89}Y NMR/magnetization were measured in YNi{sub 2}B{sub 2}C. Temperature dependence of {sup 11}B Knight shift and of the NSLR gave a normal state which agrees with the Korringa relation, indicating that the AF fluctuations on the Ni sublattice are negligible. Opening of the superconducting gap obeys BCS. A NMR approach to investigate vortex thermal motion in HTSC is presented, based on contribution of thermal flux-lines motion to both T{sub 2}{sup {minus}1} and T{sub 1}{sup {minus}1}. Effects are demonstrated in YBa{sub 2}Cu{sub 3}O{sub 7} and HgBa{sub 2}CuO{sub 4+d}.

  2. Wang-Landau density of states based study of the folding-unfolding transition in the mini-protein Trp-cage (TC5b)

    SciTech Connect (OSTI)

    Singh, Priya; Sarkar, Subir K. [School of Physical Sciences, Jawaharlal Nehru University, New Delhi - 110 067 (India); Bandyopadhyay, Pradipta [School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi - 110 067 (India)

    2014-07-07T23:59:59.000Z

    We present the results of a high-statistics equilibrium study of the folding/unfolding transition for the 20-residue mini-protein Trp-cage (TC5b) in water. The ECEPP/3 force field is used and the interaction with water is treated by a solvent-accessible surface area method. A Wang-Landau type simulation is used to calculate the density of states and the conditional probabilities for the various values of the radius of gyration and the number of native contacts at fixed values of energyalong with a systematic check on their convergence. All thermodynamic quantities of interest are calculated from this information. The folding-unfolding transition corresponds to a peak in the temperature dependence of the computed specific heat. This is corroborated further by the structural signatures of folding in the distributions for radius of gyration and the number of native contacts as a function of temperature. The potentials of mean force are also calculated for these variables, both separately and jointly. A local free energy minimum, in addition to the global minimum, is found in a temperature range substantially below the folding temperature. The free energy at this second minimum is approximately 5?k{sub B}T higher than the value at the global minimum.

  3. tc624608 | The Ames Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron4 Self-Scrubbing:,, ,Development1U C L E A R E NTAU Performance

  4. TC_CLOUD_REGIME.cdr

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over Our InstagramStructureProposed Action(InsertAbout theSystems3, Revision

  5. Use of {sup 59}Ni, {sup 99}Tc, and {sup 236}U to monitor the release of radionuclides from objects containing spent nuclear fuel dumped in the Kara Sea

    SciTech Connect (OSTI)

    Mount, M.E.; Layton, D.W.; Lynn, N.M.; Hamilton, T.F.

    1998-04-01T23:59:59.000Z

    Between 1965 and 1981, five objects - six naval reactor pressure vessels (RPVs) from four former Soviet Union submarines and a special containers from the icebreaker Lenin, each of which contained damaged spent nuclear fuel (SNF) - were dumped in a variety of containments, using a number of sealing methods, at four sites in the Kara Sea. All objects were dumped at sites that varied in depth from 12 to 300 m. This paper examines the use of the long-lived radionuclides {sup 59}Ni, {sup 99}Tc, and {sup 236}U encased within these objects to monitor the breakdown of the containments due to corrosion. Included are discussions of the radionuclide inventory and their release rate model, the estimated radionuclide mass in a typical seawater sample, and the potential for radionuclide measurement via Accelerator Mass Spectrometry (AMS).

  6. W.-L. Huang, Z. Ren, and C. T.-C. Nguyen, "Nickel vibrating micromechanical disk resonator with solid dielectric capacitive-transducer gap," Proceedings, 2006 IEEE Int. Frequency Control Symp., Miami, Florida, June 5-7, 2006, pp. 839-847.

    E-Print Network [OSTI]

    Nguyen, Clark T.-C.

    W.-L. Huang, Z. Ren, and C. T.-C. Nguyen, "Nickel vibrating micromechanical disk resonator, Florida, June 5-7, 2006, pp. 839-847. Nickel Vibrating Micromechanical Disk Resonator With Solid in a low temperature nickel metal material and using a 30-nm nitride dielectric capacitive transducer has

  7. VOLUME 83, NUMBER 10 P H Y S I C A L R E V I E W L E T T E R S 6 SEPTEMBER 1999 Kinetic Roughening of Penetrating Flux Fronts in High-Tc Thin Film Superconductors

    E-Print Network [OSTI]

    Wijngaarden, Rinke J.

    of Penetrating Flux Fronts in High-Tc Thin Film Superconductors R. Surdeanu, R. J. Wijngaarden, E. Visser, J. M) Kinetic roughening of flux fronts penetrating in superconducting thin films are studied by means of a high proposed that the gradual thermal depinning of a single vortex line in a superconductor with randomly

  8. ACRONYMS AND ABBREVIATIONS TC -Training Circular

    E-Print Network [OSTI]

    Gellman, Andrew J.

    on machine tools. abrasive wheels- Wheels of a hard abrasive, such as Carborundum used for grinding. acute

  9. LSH-TC V1.O

    Energy Science and Technology Software Center (OSTI)

    002520WKSTN00 Locality sensitive hashing-based traffic classifier https://computation.llnl.gov/casc/dcca-pub/dcca/downloads.ht

  10. High Tc superconductivity in doped Mott insulators

    E-Print Network [OSTI]

    Fominov, Yakov

    ) and unpublished. A.Paramekanti, MR & N. Trivedi, PRL 87, 217002 (2001); PRB 69, 144509 (2004); PRB 70, 054504 (2004); PRB 71, 069505 (2005). 6 #12;Hubbard model: Minimal Model for CuO2 planes neutron Raman

  11. Photophysics and Luminescence Spectroelectrochemistry of [Tc...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    526(585) nm). Open shell TDDFT calculations support the assignment of the lowest energy transition in both the technetium and rhenium complexes to be a doublet-doublet...

  12. Why is high-Tc superconductivity exciting?

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    magnetic field at T 1 K measured by muon spin rotation Niedermayer, Budnick, et al. PRL 80, 3843 (1998) Hole segregation to antiphase domain walls 1D model 2D extrapolation...

  13. ARM - Campaign Instrument - tc-bc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492air Comments? We would love to hear fromgovInstrumentssamgovInstrumentssplatt-ii

  14. TC&WM EIS Scoping

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over Our InstagramStructureProposed Action(InsertAbout theSystems3, Revision 06, 2015call

  15. Term Contract Listing TC Number Commodity/Service TC Number Commodity/Service

    E-Print Network [OSTI]

    Papautsky, Ian

    Control/CCTV/Alarm System 756 Mail, Presort Service, First Class 801 Accounting Services - Student Loan) 420 Animals, Laboratory 415 Pall Corporation Proprietary Products 820 Asbestos Abatement (Hazardous) Consulting 525 Paper, Fine, Duplicating, Print 815 Asbestos and Lead Abatement, Full Service 515 Parking

  16. High Temperature Irradiation Resistant Thermocouple (HTIR-TC)

    ScienceCinema (OSTI)

    None

    2013-05-28T23:59:59.000Z

    INL researchers have created a new thermocouple that can resist high temperature and radiation. This device will improve safety and reduce costs associated with unit failures. Learn more about INL research at http://www.facebook.com/idahonationallaboratory

  17. TC1 Parts List Quantity Size Description **Possible Vendor

    E-Print Network [OSTI]

    Barrash, Warren

    ohms, using 2500 wraps of 40ga). All Spectrum Electronics 1 1"id x 1.75"long pvc Coil body. Use the 200 psi, thin wall pvc, for the body, not the thicker pvc. Home Depot 1 Pvc ¼"ring to fit coil body Home Depot 1 Pvc ¾" ring to fit coil body Home Depot 2 6- 32 x ¾" studs Brass terminals for coil wires Home

  18. Tc with AsqTad and p4rhmc

    SciTech Connect (OSTI)

    Soltz, R; Vranas, P; Gupta, R

    2007-06-20T23:59:59.000Z

    We present the ongoing analysis of Lattice Quantum Chromodynamics runs on the LLNL BG/L supercomputer. This installment includes the analysis of 12,000 trajectories from the MILC AsqTad code on a 32{sup 3} x 8 lattice and the time histories from the plaquette and {psi} - bar{psi} trajectories from the p4rhmc code.

  19. TC2SMV: UML State Chart Diagram Dependable Software Laboratory

    E-Print Network [OSTI]

    Analysis), FMEA (Failure Mode and Effect Analysis), HAZOP (Hazard and Operability; · ­ , · ­ · ­ · #12; · (safety analysis) (safety assessment) . ­ · ­ ­ : FTA (Fault Tree . · . ­ / . ­ . #12; · / · · Top event (failure) leaf Fire occurs= Electrical short in cables | Air

  20. avaliacao por tc: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    materials, the rare- earth transition-metal phosphide oxides LnFePO (Ln La, Pr, Nd, Sm, Gd) have not been studied Schilling, James 193 ADVANCESINPHYSICS, 1995, VOL. 44, NO. 2,...

  1. Inovative Site Characteristics of Microbes T.C. Hazen*1

    E-Print Network [OSTI]

    Hazen, Terry

    J.M. Dougherty4 C.B. Fliermans1 John Wear5 C.A. Eddy-Dilek1 1. Westinghouse Savannah River Company, SRTC, Aiken, SC 29808 2. Bechtel Savannah River Inc., Savannah River Technology Center, Aiken, SC 29808 3. Argonne National Laboratory, 9700 S. Cass Ave., ES/362, Argon, IL 60439-4815 4. US Environmental

  2. SU(N) Gauge Theories Near $T_c$

    E-Print Network [OSTI]

    B. Lucini; M. Teper; U. Wenger

    2003-09-02T23:59:59.000Z

    We study the deconfinement phase transition in SU(N) gauge theories for $N$=2,3,4,6,8. The transition is first order for $N \\ge 3$, with the strength increasing as $N$ increases. We extrapolate $T_c/\\sqrt{\\sigma}$ to the continuum limit for each $N$, and observe a rapid approach to the large $N$ limit. As $N$ increases the phase transition becomes clear-cut on smaller spatial volumes, indicating the absence of (non-singular) finite volume corrections at $N=\\infty$ -- reminiscent of large $N$ reduction. The observed rapid increase of the inter-phase surface tension with $N$ may indicate that for $N=\\infty$ the deconfinement transition cannot, in practise, occur.

  3. Pseudogaps, Polarons, and the Mystery of High-Tc Superconductivity

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    (77 degrees Kelvin above absolute zero). Initially, these "high-temperature superconductors" created enormous excitement over the possibility of one day developing...

  4. Materials Data on Tc (SG:194) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  5. Microwave characterization and applications of high-Tc superconducting films

    E-Print Network [OSTI]

    Kanamaluru, Sridhar

    1993-01-01T23:59:59.000Z

    is the finding of the correct condensed-state wave function, which is a linear combination of one-electron states with correlation among electrons of opposite spin and momenta. This correlation prevails over the coherence length (. As a consequence... supercarriers n, can condense simultaneously to form a supercurrent when t & 0, then we can define an effective supercarrier density, n, '(T) n, '(T) = n, (T) ? n, (T) (29) In (29) n, is also treated as a function of temperature because the carriers...

  6. Communications Applications of Microelectromechanical Systems Clark T.-C. Nguyen

    E-Print Network [OSTI]

    Nguyen, Clark T.-C.

    . Among the specific devices described are tunable micromachined capacitors, integrated high-Q inductors. At present, the ultimate miniaturization of super-hetero- dyne transceivers is limited mainly by the need

  7. Grain boundary dissipation in high-{Tc} superconductors

    SciTech Connect (OSTI)

    Gray, K. E.; Miller, D. J.; Field, M. B.; Kim, D. H.; Berghuis, P.

    2000-04-03T23:59:59.000Z

    Thin-film and bulk [001] tilt bicrystal grain boundaries (GBs) in YBa{sub 2}Cu{sub 3}O{sub 7} exhibit a strong dependence of critical current density, J{sub c} on misorientation angle. What was initially difficult to understand was the 30x smaller J{sub c} in bulk GBs which are microscopically more perfect. The authors review an explanation of this zero-field data, which is based on the pinning of Josephson vortices by the meandering found in thin-film GBs. In addition, there is evidence that J{sub c} of GBs does not drop as quickly with applied magnetic field as expected by simple Josephson junction models. The long-wavelength pinning potential due to meandering is less effective at high fields, but Gurevich and Cooley (GC) proposed a new mechanism for an enhanced GB J{sub c} arising from pinned Abrikosov vortices in the banks of a GB which present a static, quasiperiodic pinning potential to pin GB vortices. They find a peak in J{sub c} and an unusual hysteresis which give considerable support to the GC concept. In low fields, the GBs exhibit a larger J{sub c} for field cooling, which is opposite to the usual hysteresis but agrees with GC due to the larger Abrikosov vortex density in the banks. Magnetization data on the same sample are consistent including the identification of the irreversibility field.

  8. A Novel Class of High-TC Ferromagnetic Semiconductors

    E-Print Network [OSTI]

    Shlyk, L. V.

    2008-01-01T23:59:59.000Z

    Diluted magnetic semiconductor or clustering effect? ,ferromagnetism in semiconductors, J. Appl. Phys. , inMaking nonmagnetic semiconductors ferromagnetic, Science,

  9. Luminescence-Based Spectroelectrochemical Sensor for [Tc(dmpe...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    range of 0.16 to 340.0 M. Citation: Chatterjee S, AS Del Negro, MK Edwards, SA Bryan, N Kaval, N Pantelic, LK Morris, WR Heineman, and CJ Seliskar.2011."Luminescence-Based...

  10. Microsoft Word - HAB Adv #146 Tc-99.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighandSWPA / SPRA / USACE SWPAURTeC:8CO6 Figure Fuel3S5 Subject:6 Subject:

  11. LD Vehicles AFDC 11 25 13 TC.xlsx

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5 - -/e),,s - 1 2 3 4 5 6 7 8 9 10 11 12 1360

  12. Pseudogaps, Polarons, and the Mystery of High-Tc Superconductivity

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeedingTechnical News,Program90803| DepartmentPseudogaps, Polarons, and the

  13. Bridging the Gaps of High-Tc Superconductor

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced Materials FindAdvanced MaterialsDepartment ofNOAA-EPA

  14. Trexler Climate Energy Services TC ES | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f

  15. Introduction to Tc/I in Hanford Flowsheet

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM Flash2011-12Approvedof Energy Interim

  16. Pseudogaps, Polarons, and the Mystery of High-Tc Superconductivity

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah47,193.70COMMUNITY AEROSOL INLET J.-L.Pseudogaps, Polarons, and the

  17. Pseudogaps, Polarons, and the Mystery of High-Tc Superconductivity

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah47,193.70COMMUNITY AEROSOL INLET J.-L.Pseudogaps, Polarons, and

  18. Pseudogaps, Polarons, and the Mystery of High-Tc Superconductivity

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah47,193.70COMMUNITY AEROSOL INLET J.-L.Pseudogaps, Polarons,

  19. Compensated electron and hole pickets in an underdoped high Tc superconductor

    SciTech Connect (OSTI)

    Harrison, Neil [Los Alamos National Laboratory; Altarawneh, Moaz M [Los Alamos National Laboratory; Mielke, Charles H [Los Alamos National Laboratory; Sebastian, Suchitra E [CAMBRIDGE U; Goddard, P A [U OF OXFORD; Liang, Ruixing [U BRITISH COLUMBIA; Bonn, D A [U BRITISH COLUMBIA; Hardy, W N [U BRITISH COLUMBIA; Andersen, O K [MAX PLANCK INST.; Lonzarich, G G [CAMBRIDGE U

    2010-01-01T23:59:59.000Z

    Important to the question of high temperature superconductivity is whether bound fermionic pairs with zero or finite momentum - exhibiting bosonic physics - are involved. Here we use angle-dependent magnetic quantum oscillation measurements in underdoped YBa{sub 2}Cu{sub 3}O{sub 6+x} to reveal two significantly differently corrugated small sections of Fermi surface, identifying them as comprising opposite carriers located at different locations of the Brillouin zone. The surprising finding that these disproportionately heavy small pockets are equal in size indicates they are prone to a finite momentum excitonic insulator instability. We discuss the possibility that reducing the doping drives YBa{sub 2}Cu{sub 3}O{sub 6+x} closer to an instability of this nature, its ultimate realization occuring at the metal-insulator quantum critical point, accompanied by a potential enhancement of superconducting transition temperatures.

  20. TC-1 (5/20/14) COLORADO SCHOOL OF MINES FACULTY HANDBOOK

    E-Print Network [OSTI]

    : Visiting Titles Subparagraph D: Research Titles Item 1: Visiting Scholar Item 2: Postdoctoral Fellow Item 3

  1. In-Situ Survival Mechanisms of U and Tc Reducing Bacteria in Contaminated Sediments

    SciTech Connect (OSTI)

    Krumholz, Lee R.

    2005-06-01T23:59:59.000Z

    Desulfovibrio desulfuricans G20 and Shewanella oneidensis MR-1 are model subsurface organisms for studying genes involving in situ radionuclide transformation and sediment survival. Our research objective for this project has been to develop a signature-tagged mutagenesis (STM) procedure and use it to identify mutants in genes of these subsurface bacteria involved in sediment survival and radionuclide reduction. The mutant genes identified in these studies allow us for the first time to describe at the genetic level microbial processes that are actually being used by environmental bacteria while growing in their natural ecosystems. Identification of these genes revealed facets of microbial physiology and ecology that are not accessible through laboratory studies. Ultimately, this information may be used to optimize bioremediation or other engineered microbial processes. Furthermore, the identification of a mutant in a gene conferring multidrug resistance in strain MR-1 shows that this widespread mechanism of antibiotic resistance, likely has its origins as a mechanism of bacterial defense against naturally occurring toxins. Studies with D. desulfuricans G20: The STM procedure first involved generating a library of 5760 G20 mutants and screening for potential non-survivors in subsurface sediment microcosms. After two rounds of screening, a total of 117 mutants were confirmed to be true non-survivors. 97 transposon insertion regions have been sequenced to date. Upon further analysis of these mutants, we classified the sediment survival genes into COG functional categories. STM mutant insertions were located in genes encoding proteins related to metabolism (33%), cellular processes (42%), and information storage and processing (17%). We also noted 8% of STM mutants identified had insertions in genes for hypothetical proteins or unknown functions. Interestingly, at least 64 of these genes encode cytoplasmic proteins, 46 encode inner membrane proteins, and only 7 encode periplasmic space and outer membrane associated proteins. Through blast search analysis, we also showed that 81 out of 94 proteins shown to be important in sediment survival have homologs in D. vulgaris, 70 have homologs in Geobacter metallireducens, and 69 have homologs in Geobacter sulfurreducens PCA. Some interesting proteins include ribonucleotide reductase and chemotaxis related proteins. Ribonucleotide reductase catalyzes the reductive synthesis of deoxyribonucleotides from their corresponding ribonucleotides, providing the precursors necessary for DNA synthesis. Two ribonucleotide reductase genes (nrdE, nrdD) were found to be essential for G20 survival in the sediment, but not essential for growth in the lactate-sulfate medium. Bacterial methyl-accepting chemotaxis proteins (MCP) respond to changes in the concentration of attractants and repellents in the environment.

  2. Mechanisms for the Reduction of Actinides and Tc(VII) in Geobacter sulfurreducens

    SciTech Connect (OSTI)

    Lloyd, Jonathan R.

    2004-06-01T23:59:59.000Z

    The mechanism of the reduction of U(VI) and Cr(VI) has now been studied in detail. Cr(VI) is reduced by one-electron transfer reactions to Cr(III), via a cell-bound Cr(V) intermediate identified by EPR spectroscopy. Studies with a cytochrome c7 mutant demonstrate that the electron transfer chain includes this protein which may be the terminal reductase for Cr(VI). Potential mechanisms of inhibition of Cr(III) precipitation, involving complex formation with organic acids commonly used as electron donors for metal reduction in the subsurface have also been identified. We have also initiated a collaboration with computational chemists led by Prof Ian Hillier in Manchester, to model metal binding to cytochrome c7, and subsequent electron transfer from the enzyme to the metal quantum mechanically.

  3. MYELOID NEOPLASIA Perturbed hematopoiesis in the Tc1 mouse model of Down syndrome

    E-Print Network [OSTI]

    Li, Zhe

    lymphoblastic leukemia and acute megakaryoblastic leukemia (AMKL); DS newborns present with transient myelo-5 In addition, they also have an increased incidence of both acute lymphoblastic leukemia (ALL) and acute aspects of physiology, including hematopoiesis. DS children have greatly increased rates of acute

  4. DOE Zero Energy Ready Home Case Study: TC Legend Homes, Bellingham, WA

    Broader source: Energy.gov [DOE]

    Case study of a DOE Zero Energy Ready home in Bellingham, WA, that achieves HERS 43 without PV or HERS 13 with 3.2 kW of PV.

  5. A gauge approach to the "pseudogap" phenomenology of the spectral weight in high Tc cuprates

    E-Print Network [OSTI]

    P. A. Marchetti; M. Gambaccini

    2012-10-24T23:59:59.000Z

    We assume the t-t'-J model to describe the CuO_2 planes of hole-doped cuprates and we adapt the spin-charge gauge approach, previously developed for the t-J model, to describe the holes in terms of a spinless fermion carrying the charge (holon) and a neutral boson carrying spin 1/2 (spinon), coupled by a slave-particle gauge field. In this framework we consider the effects of a finite density of incoherent holon pairs in the normal state. Below a crossover temperature, identified as the experimental "upper pseudogap", the scattering of the "quanta" of the phase of the holon-pair field against holons reproduces the phenomenology of Fermi arcs coexisting with gap in the antinodal region. We thus obtain a microscopic derivation of the main features of the hole spectra due to pseudogap. This result is obtained through a holon Green function which follows naturally from the formalism and analytically interpolates between a Fermi liquid-like and a d-wave superconductor behavior as the coherence length of the holon pair order parameter increases. By inserting the gauge coupling with the spinon we construct explicitly the hole Green function and calculate its spectral weight and the corresponding density of states. So we prove that the formation of holon pairs induces a depletion of states on the hole Fermi surface. We compare our results with ARPES and tunneling experimental data. In our approach the hole preserves a finite Fermi surface until the superconducting transition, where it reduces to four nodes. Therefore we propose that the gap seen in the normal phase of cuprates is due to the thermal broadening of the SC-like peaks masking the Fermi-liquid peak. The Fermi arcs then correspond to the region of the Fermi surface where the Fermi-liquid peak is unmasked.

  6. A gauge approach to the "pseudogap" phenomenology of the spectral weight in high Tc cuprates

    E-Print Network [OSTI]

    Marchetti, P A

    2012-01-01T23:59:59.000Z

    We assume the t-t'-J model to describe the CuO_2 planes of hole-doped cuprates and we adapt the spin-charge gauge approach, previously developed for the t-J model, to describe the holes in terms of a spinless fermion carrying the charge (holon) and a neutral boson carrying spin 1/2 (spinon), coupled by a slave-particle gauge field. In this framework we consider the effects of a finite density of incoherent holon pairs in the normal state. Below a crossover temperature, identified as the experimental "upper pseudogap", the scattering of the "quanta" of the phase of the holon-pair field against holons reproduces the phenomenology of Fermi arcs coexisting with gap in the antinodal region. We thus obtain a microscopic derivation of the main features of the hole spectra due to pseudogap. This result is obtained through a holon Green function which follows naturally from the formalism and analytically interpolates between a Fermi liquid-like and a d-wave superconductor behavior as the coherence length of the holon ...

  7. Proc. 2nd ESIS TC4 Conference on Polymers and Composites, in press, 1999

    E-Print Network [OSTI]

    Utah, University of

    toughness of the composite. The required energy release rate can be calculated from a global energy balance. A. NAIRN Material Science and Engineering, University of Utah, Salt Lake City, Utah 84112, USA for the energy release rate due to crack growth. These general results automatically include the effects

  8. Competitive Reduction of Pertechnetate (99TcO4-) by Dissimilatory...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AE, JK Fredrickson, JM Zachara, A Dohnalkova, SM Heald, DA Moore, DW Kennedy, MJ Marshall, CM Wang, CT Resch, and P Nachimuthu.2011."Competitive Reduction of Pertechnetate...

  9. Formation of thin film Tl-based high-Tc? superconducting oxides from amorphous alloy precursors

    E-Print Network [OSTI]

    Williams, John Charles

    1991-01-01T23:59:59.000Z

    and satisfying. John Charles Williams TABLE OF CONTENTS ABSTRACT. ACKNOWLEDGMENTS. TABLE OF CONTENTS. LIST OF TABLES. LIST OF FIGURES. I. INTRODUCTION. 1v v vu1 A. Properties of Perovskites and Copper-Oxide Superconductors. . . . . . . . . 2 1.... Fundamental Properties. 2. Perovskite Crystal Structure. 3. Perovskite Crystal Structure Modifications 4, Structure of Thallate Superconductors . . B. Thallium-based Thin Film Superconductors. . . . 1. Tl-based Thin Film Production Methods. . . . 2...

  10. Oxidative Dissolution Potential of Biogenic and Abiogenic TcO2...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    reduced by reaction with biogenic Fe(II) in two sediments differing in mineralogy and aggregation state (FRC, RG). Both sediments contained Fe(III) and Mn(IIIIV) as...

  11. V-183: Cisco TelePresence TC and TE Bugs Let Remote Users Deny...

    Broader source: Energy.gov (indexed) [DOE]

    or logical Layer-2 network as the affected system to gain an unauthenticated root shell. REFERENCE LINKS: SecurityTracker Alert ID: 1028682 Secunia Advisory SA53730 Cisco...

  12. DOE Zero Energy Ready Home Case Study: TC Legend Homes, Bellingham...

    Broader source: Energy.gov (indexed) [DOE]

    study of a DOE Zero Energy Ready home in Bellingham, WA, that achieves HERS 43 without PV or HERS 13 with 3.2 kW of PV. The 1,055-ft2 two-story production home has 6-in. SIP...

  13. TC-STAR: Evaluation Plan for Voice Conversion Technology David Sundermann1,2

    E-Print Network [OSTI]

    Suendermann, David

    -mail: {suendermann, antonio, hduxans}@gps.tsc.upc.edu 2 Siemens AG, 81739 Munich, Germany, e-mail: harald.hoege@siemens transform vocal tract and excita- tion [8], whereas some approaches aim at transforming the speaker

  14. Fate of Tc99 at WTP and Current Work on Capture

    Office of Environmental Management (EM)

    analysis Identification and quantification of main feed reactions - Differential scanning calorimetry (DSC) - Thermal gravimetric analysis (TGA) - Gas ChromatographyMass...

  15. DOE Zero Energy Ready Home Case Study: TC Legend Homes, Bellingham...

    Office of Environmental Management (EM)

    walls with R-20 high-density rigid EPS foam under the slab. A single ductless heat pump heats and cools the home, which also gets passive solar heating from south-facing...

  16. DOE Zero Energy Ready Home Case Study TC Legend, Seattle, WA...

    Energy Savers [EERE]

    has SIP walls and roof, R-20 XPS under the slab, triple-pane windows, an air to water heat pump for radiant heat, and balanced ventilation with timer -controlled fans to bring in...

  17. DOE Zero Energy Ready Home Case Study 2014: TC Legend Homes,...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and second floor. The water for this radiant system is heated by an air-to-water heat pump, which operates at a COP of 4.5. This heat pump also preheats domestic hot-water,...

  18. DOE Zero Energy Ready Home Case Study: TC Legend Homes, Bellingham...

    Energy Savers [EERE]

    also gets passive solar heating from south-facing triple-pane windows that heat a concrete slab floor plus a connected greenhouse. An exhaust fan provides ventilation by...

  19. DOE Zero Ready Home Case Study: TC Legend Homes, Cedarwood, Bellingham...

    Broader source: Energy.gov (indexed) [DOE]

    installed that ensure the home is ready for solar photovoltaic and solar water heating panels when the homeowner is ready to purchase them. This is the second home Clifton...

  20. Microsoft Word - ^Paper - Re and Tc Raman - 6-28-2013

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    show weak peaks superimposed on a dominant spectrum of glass characteristic of silicate and borate network vibrations. At high concentrations, sharp peaks characteristic of...

  1. A mixed mean-field/BCS phase with an energy gap at high $T_c$

    E-Print Network [OSTI]

    N. Ilieva; W. Thirring

    2000-01-17T23:59:59.000Z

    We construct a pair potential which in a scaling limit leads to a Hamiltonian that generates co-existing mean-field and superconducting phases. Depending on the relative values of the coupling constants, the superconducting phase may exist at arbitrarily high temperatures.

  2. au tc99m-hmpao dans: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    s Paris-Sud XI, Universit de 36 Communiqu de presse 08 aot 2013 Dcouverte au Maroc d'une tortue marine gante dans les dpts Biology and Medicine Websites Summary:...

  3. au mdp-tc99m dans: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    s Paris-Sud XI, Universit de 36 Communiqu de presse 08 aot 2013 Dcouverte au Maroc d'une tortue marine gante dans les dpts Biology and Medicine Websites Summary:...

  4. Low-loss, high-speed, high-{Tc} superconducting bearings

    DOE Patents [OSTI]

    Hull, J.R.; Mulcahy, T.M.; Uherka, K.L.

    1996-07-30T23:59:59.000Z

    A flywheel energy storage device is disclosed including an iron structure disposed for rotation adjacent a stationary superconductor material structure and a stationary permanent magnet. The stationary permanent magnet levitates the iron structure while the superconductor structure can stabilize and levitate the rotating iron structure. 15 figs.

  5. A Twisted Ladder: Relating the Fe Superconductors to the High Tc Cuprates

    SciTech Connect (OSTI)

    Berg, E.

    2010-05-26T23:59:59.000Z

    We construct a 2-leg ladder model of an Fe-pnictide superconductor and discuss its properties and relationship with the familiar 2-leg cuprate model. Our results suggest that the underlying pairing mechanism for the Fe-pnictide superconductors is similar to that for the cuprates.

  6. Bearing design for flywheel energy storage using high-TC superconductors

    DOE Patents [OSTI]

    Hull, John R. (Hinsdale, IL); Mulcahy, Thomas M. (Western Springs, IL)

    2000-01-01T23:59:59.000Z

    A high temperature superconductor material bearing system (38) This system (38) includes a rotor (50) having a ring permanent magnet (60), a plurality of permanent magnets (16, 20 and 70) for interacting to generate levitation forces for the system (38). This group of magnets are a push/pull bearing (75). A high temperature superconductor structure (30) interacts with the ting permanent magnet (60) to provide stabilizing forces for the system (38).

  7. Visit our Web site at: http://www.thermoscientific.com/tc

    E-Print Network [OSTI]

    Kleinfeld, David

    ......................................................................................................... iii WEEE

  8. IEEE TRANSACTIONS ON COMPUTERS, TC-2011-04-0261 1 A Parallel Neuromorphic Text Recognition

    E-Print Network [OSTI]

    Qiu, Qinru

    and Its Implementation on a Heterogeneous High Performance Computing Cluster Qinru Qiu, Qing Wu, Morgan progress in the evolution of high performance computing (HPC) technologies, the research in computational the rapid development in high performance computing (HPC) technologies, the research in machine intelligence

  9. Irradiation of commercial, high-Tc superconducting tape for potential fusion applications: electromagnetic transport properties

    SciTech Connect (OSTI)

    Aytug, Tolga [ORNL; Gapud, Albert A. [University of South Alabama, Mobile; List III, Frederick Alyious [ORNL; Leonard, Keith J [ORNL; Rupich, Marty [American Superconductor Corporation, Westborough, MA; Zhang, Yanwen [ORNL; Greenwood, N T [University of South Alabama, Mobile; Alexander, J A [University of South Alabama, Mobile; Khan, A [University of South Alabama, Mobile

    2015-01-01T23:59:59.000Z

    Effects of low dose irradiation on the electrical transport current properties of commercially available high-temperature superconducting, coated-conductor tapes were investigated, in view of potential applications in the irradiative environment of fusion reactors. Three different tapes, each with unique as-grown flux-pinning structures, were irradiated with Au and Ni ions at energies that provide a range of damage effects, with accumulated damage levels near that expected for conductors in a fusion reactor environment. Measurements using transport current determined the pre- and post-irradiation resistivity, critical current density, and pinning force density, yielding critical temperatures, irreversibility lines, and inferred vortex creep rates. Results show that at the irradiation damage levels tested, any detriment to as-grown pre-irradiation properties is modest; indeed in one case already-superior pinning forces are enhanced, leading to higher critical currents.

  10. Materials Data on SrTcO3 (SG:221) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  11. Materials Data on Rb4Tc6S13 (SG:15) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  12. Materials Data on Al12Tc (SG:204) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  13. Materials Data on Tc2P3 (SG:12) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  14. Materials Data on TaTc (SG:221) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  15. Materials Data on Al6Tc (SG:63) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  16. Materials Data on TiTc (SG:221) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  17. Materials Data on Tc3P (SG:82) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  18. Materials Data on HfTc (SG:221) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  19. Micromachining technologies for miniaturized communication devices Clark T.-C. Nguyen

    E-Print Network [OSTI]

    Nguyen, Clark T.-C.

    beams, to high-Q inductors and tunable capacitors, to switches and antennas. Environmental parasites, inductor, capacitor, switch, communications, Q 1. INTRODUCTION Due in large part to regulatory bodies than their super-heterodyne counterparts, the former are still preferred over the latter because

  20. Final Report: Stability of U (VII) and Tc (VII) Reducing Microbial Communities To Environmental Perturbation

    SciTech Connect (OSTI)

    Istok, Jonathan D

    2008-07-07T23:59:59.000Z

    'Bioimmobilization' of redox-sensitive metals and radionuclides is being investigated as a way to remediate contaminated groundwater and sediments. In this approach, growth-limiting substrates are added to stimulate the activity of targeted groups of indigenous microorganisms and create conditions favorable for the microbially-mediated precipitation ('bioimmobilization') of targeted contaminants. This project investigated a fundamentally new approach for modeling this process that couples thermodynamic descriptions for microbial growth with associated geochemical reactions. In this approach, a synthetic microbial community is defined as a collection of defined microbial groups; each with a growth equation derived from bioenergetic principles. The growth equations and standard-state free energy yields are appended to a thermodynamic database for geochemical reactions and the combined equations are solved simultaneously to predict the effect of added substrates on microbial biomass, community composition, and system geochemistry. This approach, with a single set of thermodynamic parameters (one for each growth equation), was used to predict the results of laboratory and field bioimmobilization experiments at two geochemically diverse research sites. Predicted effects of ethanol or acetate addition on uranium and technetium solubility, major ion geochemistry, mineralogy, microbial biomass and community composition were in general agreement with experimental observations although the available experimental data precluded rigorous model testing. Model simulations provide insight into the long-standing difficulty in transferring experimental results from the laboratory to the field and from one field site to the next, especially if the form, concentration, or delivery of growth substrate is varied from one experiment to the next. Although originally developed for use in better understanding bioimmobilization of uranium and technetium via reductive precipitation, the modeling approach is potentially useful for exploring the coupling of microbial growth and geochemical reactions in a variety of basic and applied biotechnology research settings.

  1. T-692: VMware vFabric tc Server Lets Remote Users Login Using...

    Broader source: Energy.gov (indexed) [DOE]

    Support & Downloads (2.0.6.RELEASE, 2.1.2.RELEASE). Addthis Related Articles V-013: EMC Avamar Client for VMware Discloses Server Password to Local Users T-575: OpenLDAP...

  2. Low-loss, high-speed, high-{Tc} superconducting bearings

    DOE Patents [OSTI]

    Hull, J.R.; Mulcahy, T.M.; Uherka, K.L.

    1997-06-24T23:59:59.000Z

    A flywheel energy storage device is disclosed including an iron structure disposed for rotation adjacent a stationary superconductor material structure and a stationary permanent magnet. The stationary permanent magnet levitates the iron structure while the superconductor structure can stabilize the rotating iron structure. 15 figs.

  3. The impact and recovery of asteroid 2008 TC3 P. Jenniskens1

    E-Print Network [OSTI]

    a phase angle slope parameter G 5 0.15). This is a measure of the asteroid's size. Eyewitnessesin Wadi Halfa and at Station 6 (atrain station between Wadi Halfa and Al Khurtum, Sudan) in the Nubian Desert Meteorological Office10 wind model data and ground-based images of the lingering train11 taken from Wadi Halfa

  4. Optimizing Cr(VI) and Tc(VII) remediation through nano-scale biomineral engineering

    E-Print Network [OSTI]

    Cutting, R. S.

    2010-01-01T23:59:59.000Z

    Fe(II) associated with goethite. Environ Sci Technol 2000,Fe(II): Reactions on goethite and iron oxide nanoparticles.byproducts by synthetic goethite and magnetite. Environ Sci

  5. New Set of Time-Dependent Ginzburg-Landau Equations for Dirty Superconductors Near Tc

    E-Print Network [OSTI]

    Hu, Chia-Ren.

    1980-01-01T23:59:59.000Z

    for the rest of this paper. If we use Eq. (4.9) to transform Eqs. (6.6) and (6.7) into the real-5 gauge, the latter equations would become ?D'7 [(N] ?R2 ?R3 ) '75.f ] + D(A'2R3 ?%3R2) '7 ('7 f] ?e A,fo, ) ?2D[(R2'7N2 ?R2'7N2)+Q(N2R2+N2R2)] ('7f I ?eAfp..., but additional conditions must now be im- posed, such as slow variation in time (i.e., with (u ? ~4~), and in space (i.e. , with I && 7,/ Vr, where T, is the transition temperature and VF the Fermi velocity). {Throughout this paper, we have used units with A...

  6. Spectral properties of quarks above Tc -- thermal mass, dispersion relation, and self-energy --

    E-Print Network [OSTI]

    Masakiyo Kitazawa

    2010-11-12T23:59:59.000Z

    Spectral properties of quarks above the critical temperature for deconfinement are analyzed in quenched lattice QCD on lattices of size 128^3x16. We study quark spectral function in energy and momentum space, focusing on the values of the thermal mass and the dispersion relations of normal and plasmino modes at nonzero momentum, as well as their spatial volume dependence. Our numerical result suggests that the dispersion relation of the plasmino mode has a minimum at nonzero momentum even near the critical temperature. The quark self-energy is also analyzed by using the analyticy of the inverse propagator, which is found to be consistent with the spectral function estimated by the two-pole ansatz.

  7. Summary of ISO/TC 201 Standard: XVIII, ISO 19318: 2004 - Surface...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    XVIII, ISO 19318: 2004 - Surface Chemical Analysis - X-Ray Photoelectron Spectroscopy - Summary of ISOTC 201 Standard: XVIII, ISO 19318: 2004 - Surface Chemical Analysis - X-Ray...

  8. Summary of ISO/TC 201 Standard: ISO 29081: 2010, Surface Chemical...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ISO 29081: 2010, Surface Chemical Analysis - Auger Electron Spectroscopy - Reporting of Methods Summary of ISOTC 201 Standard: ISO 29081: 2010, Surface Chemical Analysis - Auger...

  9. Comprehensive study of high-Tc interface superconductivity G. Logvenov1

    E-Print Network [OSTI]

    Homes, Christopher C.

    , Serbia * corresponding author: e-mail: bozovic@bnl.gov Abstract Using ALL-MBE technique, we have was monitored during growth by Reflection high energy electron diffraction (RHEED), while the chemical was analyzed using a high resolution scanning transmission electron microscope (STEM) with electron energy loss

  10. DOE Tour of Zero: The Net Zero in Seattle by TC Legend Homes | Department

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sure you want toworldPower 2010ConferencingOperationalDOEHaleCustom Homeof

  11. High-Risk Components Removed from K-25's Tc-99 Area | Department of

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To:Department of EnergySeacrist, SeniorVolume 6 BuildingThisEnergy

  12. Fate of Tc99 at WTP and Current Work on Capture

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic Plan| Department of.pdf6-OPAMDepartment6 FY FactWind

  13. Recap and Conclusions to Tc/I in Hanford Flowsheet Presentations

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM615_CostNSAR - TProcuringDepartment of EnergyU.N.RealisticRecap &

  14. T-692: VMware vFabric tc Server Lets Remote Users Login Using Obfuscated

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014,Zaleski -BlueprintThisVulnerabilitiesVulnerability | Department

  15. Interfacial Electron-Phonon Coupling as the Cause of Enhanced Tc in

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes | National Nuclear SecurityIntellectualInterconnecting

  16. DOE Zero Energy Ready Home Case Study: TC Legend Homes, Bellingham, WA |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube| Department ofDepartment of EnergyCustom Home

  17. DOE Tour of Zero: The Montlake Modern by TC Legend Homes | Department of

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 Russian NuclearandJunetrack graphics workDepartment of13Homes andof

  18. DOE Zero Energy Ready Home Case Study 2014: TC Legend Homes, Montlake Modern, Seattle, WA

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: Theof"WaveInteractionsMaterials | DepartmentEnergyNewLLCHealthyNear

  19. DOE Zero Ready Home Case Study: TC Legend Homes, Cedarwood, Bellingham, WA

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: Theof"WaveInteractionsMaterials |Production | ZeroSterling Brook Custom

  20. V-183: Cisco TelePresence TC and TE Bugs Let Remote Users Deny Service and

    Broader source: Energy.gov (indexed) [DOE]

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  1. Response of High-Tc Superconductor Metamaterials to High Intensity THz

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection TechnicalResonant Soft X-Ray Scattering of0October 17, 2014

  2. WP-96/TR-96 & TC-96 Power and Transmission Rate Case (rates/ratecases)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron SpinPrincetonUsing Maps1DOE Awards ContractRebuttalCase InitialRates

  3. Funda o Parque Tecnol gico da Paraiba PaqTc Incubator | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdf Jump1946865°, -86.0529604°Wisconsin: Energy Resources Jump

  4. Structural Behavior of Tc and I Ions in Nuclear Waste Glass

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening a solid ... Strengthening a solid partnershipInfluenza

  5. Microsoft Word - ^Paper - Re and Tc Raman - 6-28-2013

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your1 SECTION A. Revised: April 3,  T T r rXML

  6. Chemical and Biological Engineering MPC Introduction

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    Compressor cooling water CW CW quench TC LC LC LC TC open FC FC FC FC TC CC TC #12;B. Wayne Bequette

  7. C A T A L Y S TC A T A L Y S TC A T A L Y S T Letter from the EditorLetter from the EditorLetter from the Editor .................................................................................222

    E-Print Network [OSTI]

    Ginzel, Matthew

    diversity programs. These economic powerhouses are realizing their roles to identify and increased- tute a little later but first I'd like to share some data from the latest U.S Census Bureau report and this data reflects the findings in the 2007 report and compares the results with the findings of the 2002

  8. Interview: T.C. Cheng discusses the possible causes of yesterday's massive power outage in the Northeast

    E-Print Network [OSTI]

    Valero-Cuevas, Francisco

    of the grid depends very #12;much on the reliability of these transmission lines. So if there is anything wrong with the transmission lines, the reliability of the grid goes down. So, therefore, what has 15, 20 years, and there have been very little construction of new transmission lines especially

  9. 3114 IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 15, NO. 2, JUNE 2005 High-Tc Superconductors-Based Nanocomposites

    E-Print Network [OSTI]

    Prozorov, Ruslan

    shock waves, propagating in the liquid at veloc- ities well above the speed of sound. In powder-liquid to modify superconducting properties of granular YBa2Ca3CuO7 and Bi2Sr2CaCu2O8+x. Sonication of liquid Method Irradiation of liquids with powerful ultrasound induces transient cavitation: nucleation, growth

  10. Photoelectron spectroscopic study of the surface reactivity of the high T[c] material YBa?Cu?O?

    E-Print Network [OSTI]

    Liu, Hong-Xia

    1988-01-01T23:59:59.000Z

    extensive in the area of the high T, Y-Ba-Cu-0 system. 1. 1. Properties of the high T, Y-Ba-Cu-0 system The high T, Y-Ba-Cu-0 system is the single phase compound YBagCu309 8 with 5=2 (Cava et al 1987). It is an orthorhombically distorted perovskite.... The elimination of Cus+ satellite indicated the conversion to Cur+ or Cuo on the surface. As mentioned before, the sample is an orthorhombically distorted perovskite. The crystal structure facilitates reactive decomposition at high temperature (Gallagher et al...

  11. High-Tc superconductivity originated from strong spin-charge correlation: indication from linear temperature dependence of resistivity

    E-Print Network [OSTI]

    Tian De Cao

    2009-05-05T23:59:59.000Z

    Both the highest- and the linear temperature dependence of the resistivity in wide temperature range appear at the optimally doped regions of Cu-based superconductors1,2,3,4,5, and the highest- of Fe-based superconductors6,7 are also associated with the linear temperature dependence of the resistivity in normal states near superconducting states. This means that the high temperature superconductivity and the linear temperature dependence of the resistivity should be dominated by the same mechanism. This letter on theoretic calculation clearly shows that strong spin-charge correlation dominated resistivity behaves the linear temperature dependence, thus high-temperature superconductivity should be induced by strong spin-charge correlation.

  12. Evidence for a Surface-Phonon Contribution to Thin-Film Superconductivity - Depression of Tc by Noble-Gas Overlayers

    E-Print Network [OSTI]

    Naugle, Donald G.; BAKER, JW; Allen, Roland E.

    1973-01-01T23:59:59.000Z

    of the pho- non frequencies rather than magnetic effects. ACKNOWLEDGMENTS We are indebted to J. D. Lejeune for assistance with much of the experimental work. Helium gas for these experiments was provided by the Office of Naval Research. The authors...

  13. A Sea Test of Mobile Underwater Localization Huizhong Gao, Xiaoka Xu, David Huang, Chen-Fen Huang, TC Yang,

    E-Print Network [OSTI]

    Zhou, Shengli

    packs, power control board, GPS, and wireless communication module. The OFDM modems and buoys were the OFDM modem was fixed in a stationary position by the anchor, and the sur- face buoy included battery

  14. Synthesis of high {Tc} superconducting coatings and patterns by melt writing and oxidation of metallic precursor alloys

    DOE Patents [OSTI]

    Gao, W.; Vander Sande, J.B.

    1998-07-28T23:59:59.000Z

    A method is provided for fabrication of superconducting oxides and superconducting oxide composites and for joining superconductors to other materials. A coating of a molten alloy containing the metallic elements of the oxide is applied to a substrate surface and oxidized to form the superconducting oxide. A material can be contacted to the molten alloy which is subsequently oxidized joining the material to the resulting superconducting oxide coating. Substrates of varied composition and shape can be coated or joined by this method. 5 figs.

  15. How Electron Spectroscopy with Synchrotron Light Can Help Us Understand High-Tc Superconductivity and Other Complex States of Matter

    SciTech Connect (OSTI)

    Campuzano, Juan Carlos (University of Illinois, Chicago) [University of Illinois, Chicago

    2012-03-07T23:59:59.000Z

    All the physical, chemical, and mechanical properties of materials are controlled by electrons that occupy the highest energy levels in solids, those near the Fermi energy. Many techniques were developed to study those electrons, leading to the great successes of condensed matter physics. Newer and complex materials, such as the high-temperature superconductors, tend to exhibit very large anisotropies in their physical properties, requiring a more detailed knowledge of the behavior of electrons not only as a function of their energy, but also their momentum. Angle-resolved photoemission can contribute to our understanding by providing a great deal of information on many of the momentum-dependent properties of electrons and their interactions. In this talk, I will present a brief overview of how a long-term and focused collaboration between scientists at Argonne and other institutions has contributed to making angle-resolved photoemissions a most useful tool in the study of complex states of matter.

  16. Field-dependent critical state of high-Tc superconducting strip simultaneously exposed to transport current and perpendicular magnetic field

    SciTech Connect (OSTI)

    Xue, Cun; He, An; Yong, Huadong; Zhou, Youhe, E-mail: zhouyh@lzu.edu.cn [Key Laboratory of Mechanics on Disaster and Environment in Western China attached to the Ministry of Education of China, and Department of Mechanics and Engineering Sciences, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, Gansu 730000 (China)] [Key Laboratory of Mechanics on Disaster and Environment in Western China attached to the Ministry of Education of China, and Department of Mechanics and Engineering Sciences, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, Gansu 730000 (China)

    2013-12-15T23:59:59.000Z

    We present an exact analytical approach for arbitrary field-dependent critical state of high-T{sub c} superconducting strip with transport current. The sheet current and flux-density profiles are derived by solving the integral equations, which agree with experiments quite well. For small transport current, the approximate explicit expressions of sheet current, flux-density and penetration depth for the Kim model are derived based on the mean value theorem for integration. We also extend the results to the field-dependent critical state of superconducting strip in the simultaneous presence of applied field and transport current. The sheet current distributions calculated by the Kim model agree with experiments better than that by the Bean model. Moreover, the lines in the I{sub a}-B{sub a} plane for the Kim model are not monotonic, which is quite different from that the Bean model. The results reveal that the maximum transport current in thin superconducting strip will decrease with increasing applied field which vanishes for the Bean model. The results of this paper are useful to calculate ac susceptibility and ac loss.

  17. LaL2SrL8Mn207BelowTc : Exchange StricthR ECEI VED

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5 - -/e),,s - 16,3/14 LOWRelated088-00-105

  18. Analysis of exponential decay curves of mixtures

    E-Print Network [OSTI]

    Cobb, Tommy

    1966-01-01T23:59:59.000Z

    IS EXECUTED ~ THIS PROCEDURE WILL CONTINUE UNTIL PERDEV BECOMES NEGATIVE& AT WHICH TIME PROGRAM EXECUTION IS STOPPED+ TC0001 TC0602 TCOOOS TC0004 TCOOOB Tcoeo4 TCOOO')I tCO002 TCoof)l) TC0010 TCoO1} TC0012 TCOOfd tC0014 TC001s TC0016 TCOOit... TCoais TC0010 TCO020 tC0021 tC0022 tC002& TCO024 TC 00M TC0024 TC002t tC0028 TCoh29 tCOOOO TCOOS1 &C0082 TC0030 TC0634 TCOOSB C C C C C C C C C C THE PROGRAM REQUIRES THE READ IN OF 'THE FOLLOW 5 NG DATA CARDS DATA DATA DATA...

  19. Apparel, Merchandising, and Design Major College of Human Sciences

    E-Print Network [OSTI]

    Lin, Zhiqun

    Elective 3 Elective 3 Total 15 Total 17 Fall Spring TC 415, Technical Design Processes 3 TC 305, Quality Science 4 Total 12.5 Total 16 Fall Spring TC 245, Aesthetics and Brand Image 3 TC Humanities Elective (TC and Internship Prep 1 Total 17 Total 17 Fall Spring TC 372, Sourcing & Global Issues 3 TC 321, Apparel Technology

  20. STEMLESS WINE-GLASS-MODE DISK MICROMECHANICAL RESONATORS Mohamed A. Abdelmoneum, Jing Wang, Mustafa U. Demirci, and Clark T.-C. Nguyen

    E-Print Network [OSTI]

    Nguyen, Clark T.-C.

    STEMLESS WINE-GLASS-MODE DISK MICROMECHANICAL RESONATORS Mohamed A. Abdelmoneum, Jing Wang, Mustafa Polysilicon wine-glass mode micromechanical disk reso- nators using a stemless, non-intrusive suspension for this wine-glass mode resonator is more than 10X higher than measured on radial contour mode coun- terparts

  1. Matching field effects at tesla-level magnetic fields in critical current density in high-Tc superconductors containing self-assembled columnar defects

    SciTech Connect (OSTI)

    Sinclair, J. [University of Tennessee, Knoxville (UTK); Zuev, Yuri L [ORNL; Cantoni, Claudia [ORNL; Wee, Sung Hun [ORNL; Varanasi, C. V. [University of Dayton Research Institute; Thompson, James R [ORNL; Christen, David K [ORNL

    2012-01-01T23:59:59.000Z

    We have investigated the superconductive transport properties of YBa2Cu3O7 films containing self-assembled columnar arrays of second phase SrZrO3 or BaSnO3 precipitates. A matching condition between columnar pinning sites (aligned at or near the c axis) and external magnetic flux, tilted with respect to them, is identified in the critical current JC.H/ data. The results for the material containing SrZrO3-based pins are analyzed within a simple intuitive model. At matching, the critical current is enhanced above the model prediction. In complementary contact-free investigations of BaSnO3-doped material, matching effects are observed over a wide range of temperatures in the field dependence of JC.H/. The deduced matching fields agree reasonably well with the densities of columnar pins directly observed by scanning electron microscopy.

  2. A Combined Near-field Scanning Microwave Microscope and Transport Measurement System for Characterizing Dissipation in Conducting and High-Tc Superconducting Films at Variable Temperature

    E-Print Network [OSTI]

    Dizon, Jonathan Reyes

    2009-04-28T23:59:59.000Z

    Identifying defects and non-superconducting regions in high-temperature superconductors (HTS) is of great importance because they limit the material's capability to carry higher current densities and serve as nucleation ...

  3. Summary of ISO/TC 201 Standard: ISO 29081: 2010, Surface Chemical Analysis - Auger Electron Spectroscopy - Reporting of Methods Used for Charge Control and Charge Correction

    SciTech Connect (OSTI)

    Baer, Donald R.

    2011-11-01T23:59:59.000Z

    This international standard specifies the minimum amount of information required for describing the methods of charge control in measurements of Auger electron transitions from insulating specimens by electron-stimulated Auger electron spectroscopy to be reported with the analytical results. Information is provided in an Annex on methods that have been found useful for charge control prior to or during AES analysis. The Annex also includes a summary table of methods or approaches, ordered by simplicity of approach. A similar international standard has been published for x-ray photoelectron spectroscopy (ISO 19318: 2003(E), Surface chemical analysis - X-ray photoelectron spectroscopy - Reporting of methods used for charge control and charge correction).

  4. Magnetic fluctuations in n-type high-Tc superconductors reveal breakdown of fermiology: Experiments and Fermi-liquid/RPA calculations

    E-Print Network [OSTI]

    Krger, Frank

    and dynamical magnetic properties of opti- mally electron-doped Pr0.88LaCe0.12CuO4 with theoretical calculations for which a dynamical magnetic resonance has been reported recently and use photoemission data by others

  5. Study of optical response of high-{Tc} YBaCuO and BaKBiO thin films by terahertz spectroscopy

    SciTech Connect (OSTI)

    Liu, Y.; Gao, F.; Whitaker, J.F.; Uher, C. [Univ. of Michigan, Ann Arbor, MI (United States). Center for Ultrafast Optical Science; Platt, C.E. [Univ. of Illinois, Urbana, IL (United States)

    1994-12-31T23:59:59.000Z

    The authors investigate the superfluid and quasiparticle response for high temperature superconductor films of YBa{sub 2}Cu{sub 3}O{sub 7} and Ba{sub 0.6}K{sub 0.4}BiO{sub 3} under optical radiation. This is done through direct measurement of the complex conductivity of the illuminated superconductors using a coherent terahertz-bandwidth spectroscopy technique. The nature of the detected signals is discussed in the context of bolometric and nonbolometric response.

  6. J. Phys. I France 6 (1996) 2265-2273 DECEMBER 1996, PAGE 2265 Possible Reason of Tc Suppression witl~ Oxygen Doping in

    E-Print Network [OSTI]

    Boyer, Edmond

    1996-01-01T23:59:59.000Z

    spin-lattice relaxation rates at low temperatures combined with an essentially non-exponential m time. Moscow District, 142432 Russia (Receii.ed 26 April 1996, revised 23 Julj.1996, accepted 19 August 1996 concentration. However, heat capacity measurements (7j reveal no diiference in trie density of states in Tl:2201

  7. CVD POLYCRYSTALLINE DIAMOND HIGH-Q MICROMECHANICAL RESONATORS Jing Wang, James E. Butler*, D. S. Y. Hsu*, and Clark T.-C. Nguyen

    E-Print Network [OSTI]

    Nguyen, Clark T.-C.

    CVD POLYCRYSTALLINE DIAMOND HIGH-Q MICROMECHANICAL RESONATORS Jing Wang, James E. Butler*, D. S. Y one variant of approach (3), in which CVD polycrystalline diamond material, with an acoustic velocity@engin.umich.edu ABSTRACT Chemical Vapor Deposited (CVD) polycrystalline dia- mond material, with an acoustic velocity

  8. Reduction of pertechnetate by acetohydroxamic acid: Formation of [TcNO(AHA)2(H2O)]+ and implications for the UREX process.

    E-Print Network [OSTI]

    Gong, Cynthia M.; 1Harry Reid Center for Environmental Studies, Nuclear Science and Technology Division, University of Nevada, Las Vegas, Las Vegas, NV, 89154-4006

    2009-01-01T23:59:59.000Z

    + and implications for the UREX process. Cynthia-May S. Gongacetohydroxamic acid, nitrosyl, UREX, TBP extraction, XAFS,nuclear fuel. Its fate in the UREX reprocessing scheme is

  9. From Ions to Wires to the Grid: The Transformational Science of LANL Research in High-Tc Superconducting Tapes and Electric Power Applications

    SciTech Connect (OSTI)

    Ken Marken

    2009-05-20T23:59:59.000Z

    The Department of Energy (DOE) Office of Electricity Delivery and Energy Reliability (OE) has been tasked to lead national efforts to modernize the electric grid, enhance security and reliability of the energy infrastructure, and facilitate recovery from disruptions to energy supplies. LANL has pioneered the development of coated conductors high-temperature superconducting (HTS) tapes which permit dramatically greater current densities than conventional copper cable, and enable new technologies to secure the national electric grid. Sustained world-class research from concept, demonstration, transfer, and ongoing industrial support has moved this idea from the laboratory to the commercial marketplace.

  10. From Ions to Wires to the Grid: The Transformational Science of LANL Research in High-Tc Superconducting Tapes and Electric Power Applications

    SciTech Connect (OSTI)

    Marken, Ken (Superconductivity Technology Center, Los Alamos) [Superconductivity Technology Center, Los Alamos

    2009-05-20T23:59:59.000Z

    The Department of Energy (DOE) Office of Electricity Delivery and Energy Reliability (OE) has been tasked to lead national efforts to modernize the electric grid, enhance security and reliability of the energy infrastructure, and facilitate recovery from disruptions to energy supplies. LANL has pioneered the development of coated conductors - high-temperature superconducting (HTS) tapes - which permit dramatically greater current densities than conventional copper cable, and enable new technologies to secure the national electric grid. Sustained world-class research from concept, demonstration, transfer, and ongoing industrial support has moved this idea from the laboratory to the commercial marketplace.

  11. Thermodynamic desorption of oxygen in high Tc superconducting oxides J.P. Burger, L. Lesueur+, M. Nicolas, J.N. Daou, L. Dumoulin+ and P. Vajda

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    pressure). This formula is only valid for a repulsive interaction enrgy E; (i.e. when Ei 0). For attractive

  12. Lyle, M., Koizumi, I., Richter, C., and Moore, T.C., Jr. (Eds.), 2000 Proceedings of the Ocean Drilling Program, Scientific Results, Vol. 167

    E-Print Network [OSTI]

    Kurapov, Alexander

    . MILLENNIAL-SCALE CaCO3 AND CORG EVENTS ALONG THE NORTHERN AND CENTRAL CALIFORNIA MARGINS: STRATIGRAPHY and CaCO3 . Oxygen isotope stratigra- phy on benthic foraminifers was used to assign age models.y.-scale events that can be found in both the CaCO3 and Corg time series. We show that the CaCO3 events are caused

  13. ATOMIC SCALE STUDIES OF DOPED-HOLE DISTRIBUTIONS, SELF ORGANIZED ELECTRONIC NANO-DOMAINS, AND ELECTRON-BOSON COUPLING IN HIGH-TC CUPRATES

    SciTech Connect (OSTI)

    Davis, James

    2014-05-14T23:59:59.000Z

    Progress is reported in these areas: Exotic Density Wave in Underdoped Cuprates; Varying the inter-?atomic distances within individual crystal unit-?cells of cuprates; Truncated Momentum Space Electronic Structure of Underdoped Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+?}; and Visualizing Phase Fluctuating d-?Wave Superconductivity in the Cuprate Pseudogap State.

  14. Reduction of pertechnetate by acetohydroxamic acid: Formation of [TcNO(AHA)2(H2O)]+ and implications for the UREX process.

    E-Print Network [OSTI]

    Gong, Cynthia M.; 1Harry Reid Center for Environmental Studies, Nuclear Science and Technology Division, University of Nevada, Las Vegas, Las Vegas, NV, 89154-4006

    2009-01-01T23:59:59.000Z

    Sci. Technol. 2004, 38, Taylor, R. J. ; May, I. ; Wallwork,1998, 271-273, 534-537. Taylor, R. J. ; May, I. Czech. J.26, 1692-1694. May, I. ; Taylor, R. J. ; Brown, G. J. Alloys

  15. Local tunneling characteristics near a grain boundary of a d-wave superconductor as probed by a normal-metal or a low-Tc-superconductor STM tip

    E-Print Network [OSTI]

    Zhao, Hongwei

    2005-08-29T23:59:59.000Z

    We studied the local single-particle tunneling characteristics [as observed with scanning tunnel microscopy (STM)] for N D and S D tunneling, where N is a normal metal, S is a s-wave superconductor, and D is a d-wave superconductor with a {100...

  16. From Ions to Wires to the Grid: The Transformational Science of LANL Research in High-Tc Superconducting Tapes and Electric Power Applications

    ScienceCinema (OSTI)

    Ken Marken

    2010-01-08T23:59:59.000Z

    The Department of Energy (DOE) Office of Electricity Delivery and Energy Reliability (OE) has been tasked to lead national efforts to modernize the electric grid, enhance security and reliability of the energy infrastructure, and facilitate recovery from disruptions to energy supplies. LANL has pioneered the development of coated conductors ? high-temperature superconducting (HTS) tapes ? which permit dramatically greater current densities than conventional copper cable, and enable new technologies to secure the national electric grid. Sustained world-class research from concept, demonstration, transfer, and ongoing industrial support has moved this idea from the laboratory to the commercial marketplace.

  17. Stability of U(VI)- and Tc(VII) reducing microbial communities to environmental perturbation: a thermodynamic network model and intermediate-scale experiments

    SciTech Connect (OSTI)

    McKinley, James P.; Liu, Chongxuan; Istok, Jack; Krumholz, Lee

    2006-06-01T23:59:59.000Z

    The project is a collaborative task with a larger project headed by Jack Istok at Oregon State University, which is conducted under the same title. The project was conceptualized as follows. A ''geochemical'' model of microbial communities was hypothesized, in which microbes were characterized as mineral species according to the chemical transformations they used for metabolic function. The iron-reducing bacteria, for example, would be represented by the iron reducing chemical reaction, including a specific electron donor, the fraction of the consumed donor used for biomass maintenance or growth, and a free energy for the reaction. The pseudomineral species would then be included in a standard geochemical model, and community succession could be calculated according to the thermodynamically favored microbially mediated reactions under progressive consumption of electron donors and receptors, and evolving geochemical conditions. The project includes relatively minor participation by the University of Oklahoma and Pacific Northwest National Laboratory, with the major component at OSU. The PNNL project was funded to provide assistance to Dr. Istok in formulating the appropriate modeling approach and geochemical constraints on the modeling effort.

  18. Probing the Superconducting Order Parameter of High-Tc Superconductor Bi2Sr2CaCu2O8+? by Scanning Josephson Tunneling Microscopy

    E-Print Network [OSTI]

    Kimura, Hikari

    2009-01-01T23:59:59.000Z

    Turner, Principles of Superconductive Devices and Circuits (P. G. de Gennes, Superconductivity , edited by R. D. Parks (Tinkham, Introduction to Superconductivity (McGraw-Hill, New

  19. Probing the Superconducting Order Parameter of High-Tc Superconductor Bi2Sr2CaCu2O8+? by Scanning Josephson Tunneling Microscopy

    E-Print Network [OSTI]

    Kimura, Hikari

    2009-01-01T23:59:59.000Z

    for the high- T C superconducting cuprates. Bibliography [Microscope . 15 2-2 Superconducting STM tip and S/I/SProbing the Superconducting Order Parameter of High-T C

  20. reason is cost. High-TC wires in use today are 70% silver by volume. Even if a silver-free

    E-Print Network [OSTI]

    Perrimon, Norbert

    in both the superconductor and surrounding metallic casing. By devel- oping lower-temperature but cost-tested powder-in-a-tube technique which was developed for low-temperature superconductors, such as Nb applied superconductivity. Still, we will have to await a few more sequels to this new work24 before we

  1. Semantics and Verification of Software Lecture 17: Provably Correct Implementation II

    E-Print Network [OSTI]

    Ábrahám, Erika

    of Compiler) Thomas Noll Lehrstuhl f¨ur Informatik 2 (Software Modeling and Verification) RWTH Aachen of Statements Definition (Translation of statements) The translation function Tc . : Cmd Code is given by Tc skip := NOOP Tc x := a := Ta a : STORE(x) Tc c1;c2 := Tc c1 : Tc c2 Tc if b then c1 else c2 := Tb b

  2. The ISCAS85 Benchmark for the Circuit :'c6288' Technische Universit at Graz

    E-Print Network [OSTI]

    minimum maximum obsc6288tc1.st 107544.0 89337 4.84235e7 62078 174712 obsc6288tc10.st 7188.4 5266 106146.0 4675 13726 obsc6288tc11.st 150276.0 150530 3.71963e6 138749 156062 obsc6288tc12.st 122750.0 120102 914637.0 97734 151517 obsc6288tc13.st 118030.0 118303 700513.0 106147 127612 obsc6288tc14.st 181270

  3. Fabrication and transmission measurements of liquid crystal cells

    E-Print Network [OSTI]

    Yoon, Dae Won

    1984-01-01T23:59:59.000Z

    LC-cells. 67 to the twisted nematic LC-cells show low TC values (& 10X) up to 500 nm followed by rapid increase. TC maxima occur in 550 to 650 nm wavelength. TC maximum becomes sharper with decreasing cell thickness. For d = 6 pm, TC = 40X, max... d = 9 pm, TC - =35X and for 12 pm, TC =- 25X. max max For wavelengths longer than 700 nm, contrary to twisted nematic LC-cells, TC decreases with increasing wavelength. Gust-host LC-cells with Nx twist show higher TC than those with Npx/2 twist...

  4. The ISCAS85 Benchmark for the Circuit :'c1355' Technische Universit at Graz

    E-Print Network [OSTI]

    maximum obsc1355tc1.st 285.8 279 1449.07 200 400 obsc1355tc10.st 311.5 274 38.028 238 429 obsc1355tc11.st 270.6 242 0.64 218 454 obsc1355tc12.st 247.4 222 271.151 192 368 obsc1355tc13.st 285.7 238 436.81 221 424 obsc1355tc14.st 250.8 244 54.76 204 306 obsc1355tc15.st 282.3 241 789.61 198 495 obsc1355tc16.st

  5. The ISCAS85 Benchmark for the Circuit :'c2670' Technische Universit at Graz

    E-Print Network [OSTI]

    maximum obsc2670tc1.st 112.7 113 9.61 78 132 obsc2670tc10.st 106.4 94 51.84 82 131 obsc2670tc11.st 244.6 91 2655.68 78 1509 obsc2670tc12.st 139.2 145 49.938 59 192 obsc2670tc13.st 1.4 1 0.018 1 2 obsc2670tc14.st 112.2 112 5.76 78 131 obsc2670tc15.st 207.4 202 3.24 168 252 obsc2670tc16.st 115.3 116 162

  6. The ISCAS85 Benchmark for the Circuit :'c5315' Technische Universit at Graz

    E-Print Network [OSTI]

    maximum obsc5315tc1.st 2.9 3 0.001 2 4 obsc5315tc10.st 2.7 3 0.054 2 4 obsc5315tc11.st 500.0 418 3802.78 397 861 obsc5315tc12.st 450.5 429 156.25 413 526 obsc5315tc13.st 446.0 451 7.111 405 476 obsc5315tc14.st 729.4 644 1479.68 589 1177 obsc5315tc15.st 732.0 667 529.0 520 1136 obsc5315tc16.st 462.5 419 393

  7. E-print Network Topics: 0-9

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    tc-mdp bone 99m tc-mibi dar 99m tc-ubi 29-41 99m technetium labeled 99m- mibi para 99m-tc dmsa scintigraphy 99m-technetium pharmacokinetics studies 99m-tecnecio na identificacao...

  8. SuperFolder BMTA Other Federal Agency LANL Agreement Number: LOS ALAMOS NATIONAL LABORATORY

    E-Print Network [OSTI]

    construct described in Waldo Pedelacq JD, Cabantous S, Tran T, Terwilliger TC, Waldo GS (2005) "Engineering

  9. Split GFP in vivo BMTA Other Federal Agency LANL Agreement Number: Rev. 4/10/06

    E-Print Network [OSTI]

    -10 "OPT". These materials are described in: Cabantous S, Terwilliger TC, Waldo GS (2005) "Protein tagging

  10. Folding Reporter Not 4 Profit BMTA LANL Agreement Number: LOS ALAMOS NATIONAL SECURITY, LLC

    E-Print Network [OSTI]

    , Berendzen J, Terwilliger TC (1999) "Rapid protein folding assay using Green Fluorescent Protein" Nat Biotech

  11. Split GFP Foreign IN VIVO Not 4 Profit BMTA LANL Agreement Number: LOS ALAMOS NATIONAL SECURITY, LLC

    E-Print Network [OSTI]

    , Terwilliger TC, Waldo GS (2005) "Protein tagging and detection using engineered self-assembling fragments

  12. Folding Reporter Foreign Not 4 Profit BMTA LANL Agreement Number: LOS ALAMOS NATIONAL SECURITY, LLC

    E-Print Network [OSTI]

    , Berendzen J, Terwilliger TC (1999) "Rapid protein folding assay using Green Fluorescent Protein" Nat Biotech

  13. We study the interaction of a high frequency AC current with a magnetic field in an YBCO thin film by using time

    E-Print Network [OSTI]

    Shaw, Leah B.

    -TC superconductors. The focus of our research is on dynamical processes (electronic, magnetic, and vibrational

  14. LISTE DES THESES DE DOCTORAT PUBLIEES DURANT LE SEMESTRE D'HIVER 2002/2003

    E-Print Network [OSTI]

    Schibler, Ueli

    PHYSIQUE Resistive behavior from low to high current density in high Tc superconducting thin films. 3317

  15. Quantum materials research with ultra-cold atomic gases

    E-Print Network [OSTI]

    Plotkin, Steven S.

    in these models to reproduce specific phenomena - examples include high-Tc superconductivity What is its

  16. LOW TEMPERATURE MAGNETORESISTIVITY OF G. REMENYI, D. JACCARD+, J. FIOUQUET++, A. BRIGGS++, Z. FISR+++

    E-Print Network [OSTI]

    Boyer, Edmond

    just above the superconducting transition temperature Tc. Extrapolated residual re- sistivity depends

  17. The ISCAS85 Benchmark for the Circuit :'c1908' Technische Universit at Graz

    E-Print Network [OSTI]

    maximum obsc1908tc1.st 1541.1 1349 56786.9 1109 2256 obsc1908tc10.st 2215.3 2145 138310.0 1060 3974 obsc1908tc11.st 1781.7 1614 42394.8 1104 2932 obsc1908tc12.st 1691.1 1627 5236.93 1149 2154 obsc1908tc13.st 2158.0 1409 102400.0 1111 3529 obsc1908tc14.st 1484.9 1417 512.268 1156 2255 obsc1908tc15.st 1392

  18. The ISCAS85 Benchmark for the Circuit :'c3540' Technische Universit at Graz

    E-Print Network [OSTI]

    maximum obsc3540tc1.st 846.4 796 11406.2 451 1398 obsc3540tc10.st 873.8 722 6389.34 454 2267 obsc3540tc11.st 810.2 631 11109.2 494 1489 obsc3540tc12.st 4031.3 2650 289552.0 2243 6680 obsc3540tc13.st 4016.3 2574 2.35489e6 2156 8620 obsc3540tc14.st 3230.7 2272 122897.0 2037 7375 obsc3540tc15.st 3652.8 2292

  19. The ISCAS85 Benchmark for the Circuit :'c7552' Technische Universit at Graz

    E-Print Network [OSTI]

    minimum maximum obsc7552tc1.st 605.5 593 230.028 281 1161 obsc7552tc10.st 20266.6 19950 7.65334e6 10144 28566 obsc7552tc11.st 643.9 633 12034.1 389 973 obsc7552tc12.st 654.0 679 1521.0 412 839 obsc7552tc13.st 701.8 605 1041.14 402 1333 obsc7552tc14.st 701.7 673 3749.52 518 954 obsc7552tc15.st 750.6 728 5949

  20. ! #"%$&! '()$0!1 32546! 879!)$@A BDC0EGFIH3PRQTSVUWC0X`Ybadc@egfhSiC0prqtsvuTC0UwYxy0da5c5cVdefhgdjie&g

    E-Print Network [OSTI]

    ¤?Ái£V ¢Á5R£ª?r?£w ?R? Á5RÁV¢££ª?%£i¦9ªÍR £ªwª ¢l¯¢Í5 wwª´i£?´di?i`²³ ¢¤I´dªi±n£i¦?ª? ?W ¢ªG²³¦¤w«¹ ¢?rºdw²³ w¤35¯ ¢hw¡¢¢£R?º5¦¿VÏ´5lRV («¿ ¤´d¥²ªw£ª?¶wªR¢` (¡¢R¢Vi±¤·é¬¢¤3RV?«V¦¤ê¶¢¯ÁVº »¼¢¼¢ë¾?i¬i ¯wi±) ¢²hG±V¦iº`¯Rº¬?Ái¤´d5¦vw ¢¤w¿ ¢wi»¢» wÁi´©z¢±?v𬣪£ª («i±llw?W¤w l£ª?wi¶wÁi´©R?5?W ¢ªw£ª?)ª&´dV?5¯ª¢£ª?wi0¯Rº?@j0£ªª

  1. C.J. Ham, Y.Q. Liu, J.W. Connor, S.C. Cowley, R.J. Hastie, T.C. Hender and T.J. Martin

    E-Print Network [OSTI]

    -F construction technique produces the most accurate value of the tearing mode stability index. Submitted to. Plasmas 7 3681) which constructs the tearing mode solution from calculated basis functions in the full be used to build sophisticated models of the plasma at low computational cost. The exterior region

  2. Memorandum of Understanding Between the United States Department of Energy and the Washington State Department of Ecology for Development of the Hanford Site Tank Closure and Waste Management EIS ("TC&WM EIS")

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM Flash2011-12Approvedof6,Projects38, 1) AgendaMemoAugustU.S Department of

  3. The ISCAS85 Benchmark for the Circuit :'c432' Technische Universit at Graz

    E-Print Network [OSTI]

    432tc1.st 13.6 14 0.218 9 18 obsc432tc10.st 16.7 16 0.321 8 23 obsc432tc11.st 16.6 16 1.44 12 25 obsc432tc12.st 7.6 6 0.64 4 13 obsc432tc13.st 20.2 17 5.138 14 27 obsc432tc14.st 15.0 12 18.778 8 28 obsc432tc15.st 14.6 13 0.284 11 21 obsc432tc16.st 16.3 15 0.054 10 26 obsc432tc17.st 16.8 16 1.604 11 24

  4. The ISCAS85 Benchmark for the Circuit :'c880' Technische Universit at Graz

    E-Print Network [OSTI]

    880tc1.st 12.4 12 0.04 11 15 obsc880tc10.st 37.3 39 1.521 29 43 obsc880tc11.st 32.9 31 10.89 23 52 obsc880tc12.st 32.1 29 1.068 22 44 obsc880tc13.st 12.7 12 1.21 10 16 obsc880tc14.st 1.0 1 0.0 1 1 obsc880tc15.st 29.3 29 0.321 26 33 obsc880tc16.st 31.9 33 3.868 23 39 obsc880tc17.st 30.0 29 7.111 24 39

  5. The ISCAS85 Benchmark for the Circuit :'c499' Technische Universit at Graz

    E-Print Network [OSTI]

    499tc1.st 28.2 26 1.138 21 49 obsc499tc10.st 32.0 31 1.778 24 45 obsc499tc11.st 28.5 27 2.25 18 42 obsc499tc12.st 17.9 17 0.401 13 29 obsc499tc13.st 34.1 29 7.29 25 62 obsc499tc14.st 30.3 20 11.788 15 61 obsc499tc15.st 16.6 16 2.151 10 23 obsc499tc16.st 28.5 27 1.361 23 35 obsc499tc17.st 27.4 27 8

  6. Corrosion behavior of technetium waste forms exposed to various aqueous environments

    SciTech Connect (OSTI)

    Kolman, David Gary [Los Alamos National Laboratory; Jarvinen, Gordon [Los Alamos National Laboratory; Mausolf, Edward [UNIV OF NEVADA; Czerwinski, Ken [UNIV OF NEVADA; Poineau, Frederic [UNIV OF NEVADA

    2009-01-01T23:59:59.000Z

    Technetium is a long-lived beta emitter produced in high yields from uranium as a waste product in spent nuclear fuel and has a high degree of environmental mobility as pertechnetate. It has been proposed that Tc be immobilized into various metallic waste forms to prevent Tc mobility while producing a material that can withstand corrosion exposed to various aqueous medias to prevent the leachability of Tc to the environment over long periods of time. This study investigates the corrosion behavior of Tc and Tc alloyed with 316 stainless steel and Zr exposed to a variety of aqueous media. To date, there is little investigative work related to Tc corrosion behavior and less related to potential Tc containing waste forms. Results indicate that immobilizing Tc into stainless steel-zirconium alloys can be a promising technique to store Tc for long periods of time while reducing the need to separately store used nuclear fuel cladding. Initial results indicate that metallic Tc and its alloys actively corrode in all media. We present preliminary corrosion rates of 100% Tc, 10% Tc - 90% SS{sub 85%}Zr{sub 15%}, and 2% Tc - 98% SS{sub 85%}Zr{sub 15%} in varying concentrations of nitric acid and pH 10 NaOH using the resistance polarization method while observing the trend that higher concentrations of Tc alloyed to the sample tested lowers the corrosion rate of the proposed waste package.

  7. Assessment of the influences of groundwater colloids on the migration of technetium-99 at the Paducah Gaseous Diffusion Plant Site in Paducah, Kentucky

    SciTech Connect (OSTI)

    Gu, B.; McDonald, J.A.; McCarthy, J.F. [Oak Ridge National Lab., TN (United States); Clausen, J.L. [Paducah Gaseous Diffusion Plant, KY (United States). Environmental Restoration and Waste Management

    1994-07-01T23:59:59.000Z

    This short report summarizes the influences of groundwater colloids on the migration/transport of {sup 99}Tc at the Paducah Gaseous Diffusion Plant (PGDP) site in Paducah, Kentucky. Limited data suggest that inorganic colloidal materials (e.g., aluminosilicate clay minerals) may not play a significant role in the retention and transport of Tc. Studies by size fractionation reveal that both Tc and natural organic matter (NOM) are largely present in the <3K fraction. The role of NOM on Tc retention and transport is not conclusive on the basis of this study. However, a literature review suggests that Tc is very likely associated with the groundwater organics. The presence of the organic matter could have increased the solubility and cotransport of Tc at the PGDP site. Further studies, applying such techniques as gel chromatography, size exclusion, and spectroscopy, may be useful to determine the association of organic matter with Tc. If Tc is associated with groundwater organics, appropriate protocols for removal of organic matter associated with Tc may be developed. Time and resources were limited so this study is not comprehensive with respect to the role of mobile organic and inorganic colloidal materials on Tc transport in subsurface soils. The redox conditions (DO) of groundwaters reported may not represent the true groundwater conditions, which could have influenced the association and dissociation of Tc with groundwater colloidal materials. Because Tc concentrations in the groundwater (on the order of nCi/L) at the PGDP site is much lower than the solubility of reduced Tc (IV) (on the order of {approximately}10{sup {minus}8} mol/L or parts per billion), regardless of the redox conditions, Tc will stay in solution phase as TC(IV) or Tc(VII). The mechanisms of adsorption/association vs precipitation must be understood under reduced and low Tc conditions so that strategic plans for remediation of Tc contaminated soils and groundwaters can be developed.

  8. Immobilization of 99-Technetium (VII) by Fe(II)-Goethite and Limited Reoxidation

    SciTech Connect (OSTI)

    Um, Wooyong; Chang, Hyun-Shik; Icenhower, Jonathan P.; Lukens, Wayne W.; Serne, R. Jeffrey; Qafoku, Nikolla; Westsik, Joseph H.; Buck, Edgar C.; Steven, Smith C.

    2011-05-04T23:59:59.000Z

    Synthesized goethite was successfully used with addition of Fe(II) to sequester Tc present in both deionized water and simulated off-gas scrubber waste solutions. Pertechnetate concentration in solution decreased immediately when the pH was raised above 7 by addition of sodium hydroxide. Removal of Tc(VII) from solution occurred most likely as a result of heterogeneous surface-catalyzed reduction to Tc(IV) and subsequent co-precipitation onto the goethite. The final Tc-bearing solid was identified as goethite-dominated Fe(III)-(oxy)hydroxide based on XRD analysis, confirming the widespread observation of its characteristic acicular habit by TEM/SEM images. Analysis of the solid precipitate by XAFS showed that the dominant oxidation state of Tc was Tc(IV) and was in octahedral coordination with Tc-O, Fe-O, and Tc-Fe bond distances that are consistent with direct substitution of Tc for Fe in the goethite structure. In some experiments the final Tc-goethite product was subsequently armored with additional layers of freshly precipitated goethite. Successful incorporation of Tc(IV) within the goethite mineral lattice and subsequent goethite armoring can limit re-oxidation of Tc(IV) and its subsequent release from Tc-goethite waste forms, even when the final product is placed in oxidizing environments that typify shallow waste burial facilities.

  9. Underfloor vs. overhead: a comparative analysis of air distribution systems using the EnergyPlus simulation software

    E-Print Network [OSTI]

    Daly, A.

    2006-01-01T23:59:59.000Z

    HeatTransfer, TC-SouthWall-G8, ! - Object Index. WALL, ! -Index. MeasuredUFADSolarFraction, TC-SouthWall-G8, SF-SouthWall-G8[]; ! - Object Index. ! - Object Index.

  10. Preparation of high specific activity technetium-96

    DOE Patents [OSTI]

    Mausner, Leonard F. (Stony Brook, NY); Srivastava, Suresh C. (Setauket, NY); Prach, Thomas (Port Jefferson, NY)

    1992-01-01T23:59:59.000Z

    The present invention relates to a method of producing Tc-96 from the proton irradiation of a rhodium target and a technique for isolating under remote hot cell conditions the Tc-96 from the proton irradiated target.

  11. Research Management Board Meeting 18 September 2002 at NRS Present: Dr P Freer-Smith

    E-Print Network [OSTI]

    '. Action: TC 19. HoF to discuss with Entomology the timing of the purchase of the cyclone worm separator and nematode sponge/diet separator system. Action: TC Staffing 20. Request for additional casual for nematode

  12. Effect of Temporal Acquisition Parameters on the Image Quality of Ultrasound Axial Strain Time-constant Elastograms

    E-Print Network [OSTI]

    Varghese, Joshua

    2011-08-02T23:59:59.000Z

    constant (TC) have been developed. The axial strain TC is a parameter that is related to the viscoelastic and poroelastic behavior of tissues. Estimation of this parameter can be done using curve fitting methods. However, the effect of temporal...

  13. Midlevel ventilation's constraint on tropical cyclone intensity

    E-Print Network [OSTI]

    Tang, Brian Hong-An

    2010-01-01T23:59:59.000Z

    Midlevel ventilation, or the flux of low-entropy air into the inner core of a tropical cyclone (TC), is a hypothesized mechanism by which environmental vertical wind shear can constrain a TC's intensity. An idealized ...

  14. Trends and Market Effects of Wood Energy Policies

    E-Print Network [OSTI]

    Trends and Market Effects of Wood Energy Policies Bengt Hillring SLU SWEDEN http://www.unece.org/trade/timber/docs/tc-sessions/tc-61/presentations/10-hillring.pdf #12;Introduction Industrial use of wood fibre has increased Oil

  15. Effects of Redox Cycling of Iron in Nontronite on Reduction of...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Abstract: In situ technetium-99 (99Tc) immobilization by Fe(II) associated with clay minerals has been studied and is a potential cost-effective method for Tc remediation at the...

  16. alpha 1-adrenergic receptor-mediated: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    on a background of mAChR agonists may be able to initiate alpha activity that biases TC cells, an increase in alpha power is needed to mimic the level of phasing of TC cells...

  17. acute pulmonary radiation: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    B. S. , Texas A & N University; D. V. N. , Texas A.... Sodium technetium pertechnetate ( Tc04 , NW 163) or technetium-labeled diethylenetria- mine pentaacetic acid ( Tc-DTPA, NW...

  18. Interfacial Electron-Phonon Coupling as the Cause of Enhanced...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    K). Such an unusual enhancement not only sets a record Tc for iron-based superconductors, but also points to an important pathway to boost the Tc. In a recent paper...

  19. Radiochemistry Annex: It's getting hot in there | EMSL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    redox of Tc influences and drives the mobility of Tc in the environment." For Wall, a bonus of doing research at the Annex is its proximity to WSU's main campus in Pullman, Wash....

  20. Kinetics of Anionic Surfactant Anoxic Degradation

    E-Print Network [OSTI]

    Camacho, Julianna G.

    2010-07-14T23:59:59.000Z

    The biodegradation kinetics of Geropon TC-42 (trademark) by an acclimated culture was investigated in anoxic batch reactors to determine biokinetic coefficients to be implemented in two biofilm mathematical models. Geropon TC-42 (trademark...

  1. Electronic stiffness of a superconducting niobium nitride single crystal under pressure Xiao-Jia Chen, Viktor V. Struzhkin, Zhigang Wu, Ronald E. Cohen, Simon Kung,* Ho-kwang Mao, and Russell J. Hemley

    E-Print Network [OSTI]

    Wu, Zhigang

    Electronic stiffness of a superconducting niobium nitride single crystal under pressure Xiao report a quantitative study of pressure effects on the superconducting transition temperature Tc transition temperatures Tc's of materials, pur- suing new classes of superconductors and shedding light

  2. Technetium reduction in sediments of a shallow aquifer exhibiting dissimilatory iron reduction potential

    E-Print Network [OSTI]

    Roden, Eric E.

    mechanisms, constraints on Tc solubility, and the oxidation state, and speciation of sediment reduction of medical and defense nuclear waste. During spent nuclear fuel reprocessing, 99 Tc(IV)O2 is solubilized

  3. Perrhenate Uptake by Iron and Aluminum Oxyhydroxides: An

    E-Print Network [OSTI]

    Illinois at Chicago, University of

    -5). Approximately 32000 Ci of 99 Tc were produced in the Hanford reactor fuels and reprocessed using three different. There is considerable uncertainty about the current chemical speciation and distribution of 99Tc in the tanks. Early on

  4. Dictionary of Upriver Halkomelem, Volume I

    E-Print Network [OSTI]

    Galloway, Brent Douglas

    2009-01-01T23:59:59.000Z

    te m xwoya>, //hltu tc mx w aye//, /'The belly button is>, //C 1 =hiltu tc C 1 =mox w aye//, /'A little belly~ m xweya ~ mxweya>, df //mx w =aye ~ mx w =cye ~ mcx w

  5. vortex pinning with bounded fields for the ginzburglandau equation

    E-Print Network [OSTI]

    2003-05-13T23:59:59.000Z

    If the material is homogeneous, the function a in J? is taken to be a constant, ... to Tc ?T . Here T is the body's temperature and Tc is the material's critical.

  6. Ferromagnetism and structure of epitaxial Cr-doped anatase TiO2...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    TC, TC Droubay, V Shutthanandan, SM Heald, CM Wang, DE McCready, S Thevuthasan, JD Bryan, DR Gamelin, AJ Kellock, MF Toney, X Hong, C Ahn, and SA Chambers.2006."Ferromagnetism...

  7. The Geochemistry of Technetium: A Summary of the Behavior of an Artificial Element in the Natural Environment

    SciTech Connect (OSTI)

    Icenhower, Jonathan P.; Qafoku, Nikolla; Martin, Wayne J.; Zachara, John M.

    2008-12-01T23:59:59.000Z

    Interest in the chemistry of technetium has only increased since its discovery in 1937, mainly because of the large and growing inventory of 99Tc generated during fission of 235U, its environmental mobility in oxidizing conditions, and its potential radiotoxicity. For every ton of enriched uranium fuel (3% 235U) that is consumed at a typical burn-up rate, nearly 1 kg of 99Tc is generated. Thus, the mass of 99Tc produced since 1993 has nearly quadrupled, and will likely to continue to increase if more emphasis is placed on nuclear power to slow the accumulation of atmospheric greenhouse gases. In order to gain a comprehensive understanding of the interaction of 99Tc and the natural environment, we review the sources of 99Tc in the nuclear fuel cycle, its chemical properties, radiochemistry, and biogeochemical behavior. We include an evaluation of the use of Re as a chemical analog of Tc, as well as a summary of the redox potential, thermodynamics, sorption, colloidal behavior, and interaction of humic substances with Tc, and the potential for re-oxidation and remobilization of Tc(IV). What emerges is a more complicated picture of Tc behavior than that of an easily tractable transition of Tc(VII) to Tc(IV) with consequent immobilization. Reducing conditions (+200 to +100 mV Eh) are generally thought necessary to cause reduction of Tc(VII) to Tc(IV), but far more important are the presence of reducing agents, such as Fe(II) sorbed onto mineral grains. Catalysis of Tc(VII) by surface-mediated Fe(II) will bring the mobile Tc(VII) species to a lower oxidation state and will form the relatively insoluble Tc(IV)O2?nH2O, but even as a solid, equilibrium concentrations of aqueous Tc are nearly a factor of 20 above the EPA set drinking water standards. However, sequestration of Tc(IV) into Fe(III)-bearing phases, such as goethite or other hydrous oxyhydroxides of iron, may ameliorate concerns over the mobility of Tc. Further, the outcome of many studies on terrestrial and marine sediments that are oxidizing overall indicate that Tc is relatively immobile, due to formation of oxygen-depleted microenvironments that develop in response to bacteriological activities. The rate of re-mobilization of Tc from these microenvironments is just beginning to be assessed, but with no firm consensus. Reassessment of the simple models in which Tc is mobilized and immobilized is therefore urged.

  8. Tropical Cyclogenesis Factors in a Warming Climate

    E-Print Network [OSTI]

    Cathey, Stephen Christopher

    2012-02-14T23:59:59.000Z

    (TC) development (Emanuel et al., 2008). The conditions favorable for TC formation and development have been known for more than forty years (Gray 1968), and, although it is crucial to understanding how and why these conditions are important for TC... TC frequency (Emanuel 2005; Webster et al. 2005), but there is also model evidence that the number of cyclones may simultaneously decline (Knutson et al. 2007; Knutson et al. 2010). Maximum potential intensity (MPI) theory predicts that intensity...

  9. J Nucl Med . Author manuscript In vivo molecular imaging of atherosclerotic lesions in ApoE-/-mice using

    E-Print Network [OSTI]

    Boyer, Edmond

    in ApoE-/- mice using VCAM-1-specific, 99mTc-labeled peptidic sequences Julien Dimastromatteo 1 2 , Daniel Fagret 1 2 , Laurent M. Riou 1 2 * , Catherine Ghezzi 1 2 Grenoble 1 UJF, Universit Joseph Fourier induced by left carotid artery ligation in ApoE mice was used (n 82)./- - = Tc-B2702p and Tc-B2702p1 to Tc

  10. Progress in the Development of BSCCO-2212 Superconductors

    E-Print Network [OSTI]

    Walker, M.S.

    2011-01-01T23:59:59.000Z

    OF BSCCO-2212 SUPERCONDUCTORS M. S. Walker" IntennagneticsBI-based hlgh-Tc superconductors are promising candidates

  11. Split GFP in vitro BMTA Other Federal Agency LANL Agreement Number: LOS ALAMOS NATIONAL LABORATORY

    E-Print Network [OSTI]

    expressing a GFP 1-10 "OPT". These materials are described in: Cabantous S, Terwilliger TC, Waldo GS (2005

  12. Split GFP IN VIVO Not 4 Profit BMTA LANL Agreement Number: LOS ALAMOS NATIONAL SECURITY, LLC

    E-Print Network [OSTI]

    expressing a GFP 1- 10 "OPT". These materials are described in: Cabantous S, Terwilliger TC, Waldo GS (2005

  13. Ris National Laboratory DTU Radiation Research Department

    E-Print Network [OSTI]

    measured by gamma spectrometry and liquid scintillation counting. 99 Mo and 103 Ru were found in the 99m Tc

  14. Edinburgh Research Explorer The Structure of Eu-III

    E-Print Network [OSTI]

    Millar, Andrew J.

    ]. Very recently, Eu has been found to be superconducting at a pressure of approximately 80 GPa, with Tc

  15. -SIMULATED EFFECTS OF HERB COMPETITION ON PLANTED QUERCUS FAGINEA -213 Applied Vegetation Science 6: 213-222, 2003

    E-Print Network [OSTI]

    Espigares, Tscar

    ) biomass production of herbs. The TC treatment re- duced water availability more than the BGC treatment, in agreement with the most pronounced water stress in seedlings under TC conditions. BGC and TC treatments cropland. We produced three types of environment with respect to herb competition: absence of competition

  16. The Effect of Metal Salts on Quantification of Elemental and Organic Carbon in Diesel Exhaust

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    The Effect of Metal Salts on Quantification of Elemental and Organic Carbon in Diesel Exhaust-loaded diesel samples. Estimated TC was calculated from the BC concentration measured by optical transmissometer and linear relationship between TC and BC, TC (g)= 1.78 BC(g) - 21.97, derived from diesel reference

  17. Structure-function effects of mutations in domains of Inducible Tyrosine Kinase

    E-Print Network [OSTI]

    Levytskyy, Roman Myroslavovych

    2012-01-01T23:59:59.000Z

    5 min at 1,500 RPM in TC centrifuge 5. Resuspend pellet at5 min at 1,500 RPM in TC centrifuge 10. Resuspend pellet in5 min at 1,500 RPM in TC centrifuge 9. Lyse erythrocytes Add

  18. Evaluation of zirconium-iron-rhenium alloys as surrogates for a technetium alloy waste form

    E-Print Network [OSTI]

    Mews, Paul Aaron

    2009-05-15T23:59:59.000Z

    metal waste form alloys for technetium-99 immobilization. Rhenium is used as a surrogate for Tc-99 since Tc is not naturally available and Re is metallurgically similar to Tc. The iron-zirconium system has two eutectic compositions, Fe-15 wt % Zr and Zr...

  19. Physics 123 Equations Winter 2012 Semester I. Equations you should know by heart (but I'm giving them to you anyway)

    E-Print Network [OSTI]

    Hart, Gus

    = Qc/|W| Heat pump: COPHP = Qh/|W| Carnot: emax = (Th Tc)/Th; COPR,max = Tc/(Th Tc); COPHP,max = Th 2 + gy2 (Bernoulli's Law, from energy conservation) Thermodynamics PV = nRT = NkBT Equipartition exerted by balls (atoms) from change in momentum = area under P-V curve First Law: Eint = Qadded + Won

  20. A LANGUAGE RESOURCES GENERATION TOOLBOX FOR SPEECH SYNTHESIS David Sundermann

    E-Print Network [OSTI]

    Suendermann, David

    corpora for speech synthesis in the European project TC- Star. 1. INTRODUCTION One of the objectives of the European project TC-Star (Technology and Corpora for Speech-to-Speech Transla- tion) [1] is the generation of corpora for text-to-speech syn- thesis. According to the TC-Star speech synthesis language resources

  1. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01T23:59:59.000Z

    D.W. , M.T. Towers and T.C. Browne. 2002. Energy CostD.W. , M.T. Towers and T.C. Browne. 2002. Energy CostD.W. , M.T. Towers and T.C. Browne. 2002. Energy Cost

  2. Analysis of Automotive Turbocharger Nonlinear Response Including Bifurcations

    E-Print Network [OSTI]

    Vistamehr, Arian

    2010-10-12T23:59:59.000Z

    ........................................................... 1 Figure 2 Waterfalls of TC center housing acceleration for 30?C oil inlet temperature and 4bar oil inlet pressure...................................... 6 Figure 3 Waterfalls of TC center housing... ........................................................ 8 Figure 6 Waterfalls of TC center housing acceleration for 30?C oil inlet temperature and 4bar oil inlet pressure; (a) low imbalance amount, (b) high...

  3. Standards for Language Resources Nancy Ide,* Laurent Romary

    E-Print Network [OSTI]

    Boyer, Edmond

    of a newly formed committee of the International Standards Organization (ISO), ISO/TC 37/SC 4 Language of a newly formed committee of the International Standards Organization (ISO), ISO/TC 37/SC 4 Language of the committee. The objective of ISO/TC 37/SC 4 is to prepare international standards and guidelines

  4. Standards for Language Resources Department of Computer Science

    E-Print Network [OSTI]

    Ide, Nancy

    ; and to outline the work of a newly formed committee of the International Standards Organization (ISO), ISO/TC 37; and to outline the work of a newly formed committee of the International Standards Organization (ISO), ISO/TC 37 to the work of the committee. The objective of ISO/TC 37/SC 4 is to prepare international standards

  5. Assessing the Sustainability of Buildings From Energy Certificate to Sustainability Report

    E-Print Network [OSTI]

    Lutzkendorf, T.

    2008-01-01T23:59:59.000Z

    of international and European standardisation in ISO TC 59 SC 14, ISO SC TC 59 SC 17 as well as CEN TC 350. The aim is to assess the sustainability of buildings by including ecological, economic and social aspects in all their dimensions and ? in addition...

  6. Horarios de clase Curso 2011-2012

    E-Print Network [OSTI]

    Rey Juan Carlos, Universidad

    (III, 206) LOG Lógica GII (III, 001) MDA Matemática Discreta y Álgebra GII (III, 001) TC Tecnología de Computadores GIC (III, 206) HUM Humanidades GIC (III, 206) L M X J V 9 ­ 10 MDA FFI FFI TC 10 ­ 11 MDA FFI FFI TC 11 ­ 12 TC MDA IP LOG 12 ­ 13 TC MDA IP LOG 13 ­ 14 IP E LOG E 14 ­ 15 IP E LOG E #12;2º DOBLE

  7. Y. Lin, W.-C. Li, Z. Ren, and C. T.-C. Nguyen, "A resonance dynamical approach to faster, more reliable micromechanical switches," Pro-ceedings, 2008 IEEE Int. Frequency Control Symp., Honolulu, Hawaii, May 19-21, 2008, pp. 640-645.

    E-Print Network [OSTI]

    Nguyen, Clark T.-C.

    and nonlinear dynamical properties of micromechanical structures have been harnessed to demonstrate an impacting a large restoring force with which to overcome sticking forces; and from the energy stored via re- sonance. I. INTRODUCTION RF MEMS switches operating at RF to millimeter-wave frequencies substantially

  8. C~opyright ,f;. 2CC7 by the Americ-1n Psycholu~tc,tl A.ssnctattnn. All rif;ht~ reserved. Except,,, permmed under the Lnited States Cnpynght .Act uf 1'!76, n,, part of thi.s

    E-Print Network [OSTI]

    Townsend, James T.

    -2984 Tel: (800) 374-2721 Direct: (202) 336-5510 F:1x: (202) 336-5502 TDD/TTY: (202) .316-6123 Online: www.apa.org/boob

  9. W.-C. Li, Y. Lin, B. Kim, Z. Ren, and C. T.-C. Nguyen, "Quality factor enhancement in micromechanical resonators at cryogenic temperatures," the Int. Conf. on Solid-State Sensors, Actuators, & Microsystems (Transducers'09), Denver, Colorado, June 21-25, 2

    E-Print Network [OSTI]

    Nguyen, Clark T.-C.

    a ~2.5? increase in Q over the room temperature value, equivalent to a nearly 10-dB improvement factor, loss, os- cillator, filter, RF MEMS, wireless communications. INTRODUCTION On-chip vibrating resonators with CMOS sustaining transistor circuits have been demonstrated with phase noise marks commen

  10. Effects of soluble organic complexants and their degradation products on the removal of selected radionuclides from high-level waste. Part II: Distributions of Sr, Cs, Tc, and Am onto 32 absorbers from four variations of Hanford tank 101-SY simulant solution

    SciTech Connect (OSTI)

    Marsh, S.F. [Sandia National Labs., Albuquerque, NM (United States); Svitra, Z.V.; Bowen, S.M. [Los Alamos National Lab., NM (United States)

    1995-04-01T23:59:59.000Z

    Many of the radioactive waste storage tanks at U.S. Department of Energy facilities contain organic compounds that have been degraded by radiolysis and chemical reactions during decades of storage. In this second part of our three-part investigation of the effects of soluble organic complexants and their degradation products, we measured the sorption of strontium, cesium, technetium, and americium onto 32 absorbers that offer high sorption of these elements in the absence of organic complexants. The four solutions tested were (1) a simulant for a 3:1 dilution of Hanford Tank 101-SY contents that initially contained ethylenediaminetetraacetic acid (EDTA), (2) this simulant after gamma-irradiation to 34 Mrads, (3) the unirradiated simulant after treatment with a hydrothermal organic-destruction process, and (4) the irradiated simulant after hydrothermal processing. For each of 512 element/absorber/solution combinations, we measured distribution coefficients (Kds) twice for each period for dynamic contact periods of 30 min, 2 h, and 6 h to obtain information about sorption kinetics. On the basis of our 3,072 measured Kd values, the sorption of strontium and americium is significantly decreased by the organic components of the simulant solutions, whereas the sorption of cesium and technetium appears unaffected by the organic components of the simulant solutions.

  11. A study of d/dt - matrices

    E-Print Network [OSTI]

    Hamff, Nancy Claire

    1978-01-01T23:59:59.000Z

    )) 8. Finally, we output each latent root with its corresponding right and left latent vectors. tt Ct Ct Ct Ctttt 502 503 t t t t t t t t t t t t t *t ( tC tC tC tC tttttttttttttttttttttttC WHICH USES THF. tttttttttttt ?HE O?Z) D INV(5 ~ 5...)) &PS' EPS~BND ( 4( I ~ JiK I ~ ) J=l AN) I K I (A( I ~ J ~ KI ~ J=l ~ N) tttttttttttitttttttttC *C ~ STEPSZt EBS ~ AND tC MATRICES *C ROwS ~ tr C tC 4 tlirt 4 4 4 t t it tt t 4 tt 4 it tt (' I C't t'4ot C& Ct Ct Ct Cttttt 2 5 JQ...

  12. Development of a Real-Time Detection Strategy for Material Accountancy and Process Monitoring During Nuclear Fuel Reprocessing Using the Urex+3A Method

    E-Print Network [OSTI]

    Goddard, Braden

    2010-07-14T23:59:59.000Z

    radioactive activation products and transuranic (TRU) actinide elements, such as Pu, Np, Am, and Cm. The FP, U, and TRU isotopes emit gamma rays with unique energy spectra that are characteristic to each of the individual isotopes. These unique spectra.../Pu UREX+1 U Tc Cs/Sr TRUs/Ln FPs UREX+1a U Tc Cs/Sr TRUs FPs/Ln UREX+1b U Tc Cs/Sr U/TRUs FPs/Ln UREX+2 U Tc Cs/Sr Pu/Np Am/Cm/Ln FPs UREX+2a U Tc Cs/Sr U/Pu/Np Am/Cm/Ln FPs UREX+3 U Tc Cs/Sr Pu/Np Am/Cm FPs...

  13. Radionuclide imaging of the spleen with heat denatured technetium-99m RBC when the splenic reticuloendothelial system seems impaired

    SciTech Connect (OSTI)

    Owunwanne, A.; Halkar, R.; Al-Rasheed, A.; Abubacker, K.C.; Abdel-Dayem, H.

    1988-03-01T23:59:59.000Z

    Imaging of the spleen of 10 patients who had been hematologically diagnosed with sickle-cell anemia (SCA) was studied with (/sup 99m/Tc)tin colloid and heat denatured (/sup 99m/Tc)RBCs. In all ten patients, there was faint or nonvisualization of the spleen with (/sup 99m/Tc)tin colloid. However, with heat denatured (/sup 99m/Tc)RBCs, nine spleens were well visualized, and the uptake was homogenous. One spleen had two patchy areas of uptake. The results indicate that when splenic phagocytic function is impaired as reflected by nonvisualization of the spleen with (/sup 99m/Tc)tin colloid, it is still possible to image such a spleen with heat denatured (/sup 99m/Tc)RBCs

  14. Gas-Phase Treatment of Technetium in the Vadose Zone at the Hanford Site Central Plateau

    SciTech Connect (OSTI)

    Truex, Michael J.; Szecsody, James E.; Zhong, Lirong; Qafoku, Nikolla

    2014-09-01T23:59:59.000Z

    Technetium-99 (Tc-99) is present in the vadose zone of the Hanford Central Plateau and is a concern with respect to the protection of groundwater. The persistence, limited natural attenuation mechanisms, and geochemical behavior of Tc-99 in oxic vadose zone environments must be considered in developing effective alternatives for remediation. This report describes a new in situ geochemical manipulation technique for decreasing Tc-99 mobility using a combination of geochemical Tc-99 reduction with hydrogen sulfide gas and induced sediment mineral dissolution with ammonia vapor, which create conditions for deposition of stable precipitates that decrease the mobility of Tc-99. Laboratory experiments were conducted to examine changes in Tc-99 mobility in vadose zone sediment samples to evaluate the effectiveness of the treatment under a variety of operational and sediment conditions.

  15. The transport coefficients in (R1.5Ce0.5)RuSr2Cu2O10-5 (R=Gd,Eu) rutheno-cuprates

    E-Print Network [OSTI]

    Anatska, Maryna Petrovna

    2007-04-25T23:59:59.000Z

    Page Table 1. The onset of superconductivity and the values for first and second superconducting temperatures, Tc and Tcg superconducting temperatures for Ru-1222(Eu) with different oxygen content..............................................61... Table 2. The onset of superconductivity, the values for first and second superconducting temperatures, Tc and Tcg determined from resistivity data and the superconducting temperatures TcS determined from thermopower data for Ru-1222(Gd) with different...

  16. Dynamic fluorescence imaging with molecular agents for cancer detection

    E-Print Network [OSTI]

    Kwon, Sun Kuk

    2009-05-15T23:59:59.000Z

    emission computed tomography SUV standard uptake values SLN sentinel lymph node TK tyrosine kinase TBR target to background ratio Symbols ? pharmacokinetic parameter ? pharmacokinetic parameter )(tC BOUND concentration of dye... bound to integrin receptor either in the vascular or extravascular compartments )(tC LAREXTRAVASCU concentration of dye in extravascular space )(tC VASCULAR concentration of dye in vascular space 0 I background fluorescence intensity c k...

  17. Liu UCD Phy9B 07 1 Ch 20. The Second Law of

    E-Print Network [OSTI]

    Yoo, S. J. Ben

    Statements #12;Liu UCD Phy9B 07 9 20-6. Carnot Cycle Carnot engine QH ~ TH QC ~ TC eCarnot =1- |QC/QH|=1- TC of Thermodynamic Processes Reversible vs. Irreversible processes Equilibrium vs. non-equilibrium processes Maximum volume rV Compression ratio r (typically 8-10) #12;Liu UCD Phy9B 07 5 Otto Cycle QH=nCV(Tc-Tb) >0

  18. In Vivo Molecular Imaging of Atherosclerotic Lesions in ApoE-/-using VCAM-1-Specific, 99m

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    In Vivo Molecular Imaging of Atherosclerotic Lesions in ApoE-/- mice using VCAM-1-Specific, 99m Tc,2 , Didier Boturyn 2,3 , Pascal Dumy 2,3 , Daniel Fagret 1,2 , Laurent M. Riou 1,2 , Catherine Ghezzi 1,2 1 induced by left carotid artery ligation in ApoE-/- mice was used (n = 82). 99m Tc-B2702p and 99m Tc-B2702p

  19. tchen@engr.smu.edu Viruses and Worms

    E-Print Network [OSTI]

    Chen, Thomas M.

    Tom Chen SMU tchen@engr.smu.edu Viruses and Worms #12;TC/BUPT/8-7-04 SMU Engineering p. 2 Issues Outline #12;Introduction #12;TC/BUPT/8-7-04 SMU Engineering p. 4 Can one IP packet cripple the Internet in 10 minutes? Many worry it is possible #12;TC/BUPT/8-7-04 SMU Engineering p. 5 one packet - More

  20. tchen@engr.smu.edu Network-based

    E-Print Network [OSTI]

    Chen, Thomas M.

    Tom Chen SMU tchen@engr.smu.edu Network-based Intrusion Detection #12;TC/BUPT/8-7-04 SMU-Time Intrusion Detection Outline #12;Introduction #12;TC/BUPT/8-7-04 SMU Engineering p. 4 20-year old hacker servers, and password cracking tools Faces up to 16 years prison Recent Cases #12;TC/BUPT/8-7-04 SMU

  1. tchen@engr.smu.edu Trends in Viruses

    E-Print Network [OSTI]

    Chen, Thomas M.

    Tom Chen SMU tchen@engr.smu.edu Trends in Viruses and Worms #12;TC/IEEE/10-16-03 SMU Engineering p Super Worms? Some Research Issues Outline #12;TC/IEEE/10-16-03 SMU Engineering p. 3 1979 1983 1988, Mutation Engine Concept macro virus #12;TC/IEEE/10-16-03 SMU Engineering p. 4 70,000+ viruses are known

  2. Ris-R-Report Energistyrelsens Godkendelsessekretariat

    E-Print Network [OSTI]

    standardiseringsarbejdet i DS og IEC/Cenelec 19 3.4.1 Varetagelse af formandskabet for S588 20 3.4.2 IEC TC88: IEC 61400 standarder 20 3.4.3 IEC-TC88 MT01 Arbejdsgruppe vedrrende sikkerhedskrav (design requirements IEC 61400-1). 20 3.4.4 IEC-TC88 MT02 Arbejdsgruppe vedrrende sm vindmller(design requirements. DS/EN/IEC61400

  3. Pressure dependence of the superconducting critical temperature of HgBa 2Ca 2Cu 3O 8 y and HgBa 2Ca 3Cu 4O 10 y up to 30 GPa

    E-Print Network [OSTI]

    Wijngaarden, Rinke J.

    Pressure dependence of the superconducting critical temperature of HgBa 2Ca 2Cu 3O 8 y and HgBa 2Ca of the reported pressure- induced Tc values well above 150 K in the mercury-based high-Tc superconductors has been superconducting transition temperature Tc have been observed in HgBa2Ca2Cu3O8 y Hg-1223 samples under very high

  4. The aqueous corrosion behavior of technetium - Alloy and composite materials

    SciTech Connect (OSTI)

    Jarvinen, G.; Kolman, D.; Taylor, C.; Goff, G.; Cisneros, M. [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Mausolf, E.; Poineau, F.; Koury, D.; Czerwinski, K. [Department of Chemistry, University of Nevada, Las Vegas, Las Vegas, NV 89154 (United States)

    2013-07-01T23:59:59.000Z

    Metal waste forms are under study as possible disposal forms for technetium and other fission products. The alloying of Tc is desirable to reduce the melting point of the Tc-containing metal waste form and potentially improve its corrosion resistance. Technetium-nickel composites were made by mixing the two metal powders and pressing the mixture to make a pellet. The as-pressed composite materials were compared to sintered composites and alloys of identical composition in electrochemical corrosion tests. As-pressed samples were not robust enough for fine polishing and only a limited number of corrosion tests were performed. Alloys and composites with 10 wt% Tc appear to be more corrosion resistant at open circuit than the individual components based on linear polarization resistance and polarization data. The addition of 10 wt% Tc to Ni appears beneficial at open circuit, but detrimental upon anodic polarization. Qualitatively, the polarizations of 10 wt% Tc alloys and composites appear like crude addition of Tc plus Ni. The 1 wt% Tc alloys behave like pure Ni, but some effect of Tc is seen upon polarization. Cathodic polarization of Tc by Ni appears feasible based on open circuit potential measurements, however, zero resistance ammetry and solution measurements are necessary to confirm cathodic protection.

  5. Metagenomic Insights into Evolution of a Heavy Metal-Contaminated Groundwater Microbial Community

    E-Print Network [OSTI]

    Hemme, Christopher L.

    2010-01-01T23:59:59.000Z

    147: 173-180 Brodie EL, DeSantis TZ, Joyner DC, Baek SM, Larsen JT, Andersen GL, Hazen TC, Richardson PM,

  6. Research Summary Carbon valuation, discounting and risk management

    E-Print Network [OSTI]

    covered by the EU Emissions Trading Scheme (ETS) and 51/tCO2e (183/tC) for non-ETS sectors, both rising

  7. Evaluation of the kinetics of Cr-51 methylene diphosphonate: a potential therapeutic radiopharmaceutical for osteogenic sarcoma

    E-Print Network [OSTI]

    Poteet, Brian Allen

    1987-01-01T23:59:59.000Z

    , have been observed (3). Although there is no unanimity of agreement on which of these radiopharmaceuticals is preferred for skeletal imaging, the majority of the recent work suggests that 99m-Tc labeled methylene diphosphonate (99m-Tc HDP) ofi... in dog D and dog E. 1 represents dog D while 2 represents dog E. 33 DISCUSSION The normal bone scan when using Tc-99m MDP as the radiopharmaceutical, usually follows relatively predictable In Vivo kinetics. Tc-99m labeled diphosphonates provide a...

  8. Lymphoscintigraphic evaluation of the thoracic duct in the canine

    E-Print Network [OSTI]

    Hodges, Carlos Cintron

    1990-01-01T23:59:59.000Z

    , this led to the investigation 99m . 99m of several technetium ( ic)-radiocolloids as potential radiopharmaceuticals for LSG. A wide variety of radiopharmaceuticals have been used for LSG since 1946, 99m 99m 99m including Tc-ammonium sulfur colloid, Tc...-antimony sulfur colloid, Tc- 99m 99m 99m dextran, Tc-human serum albumin, i c-hydroxyethyl starch, i c-stann- 99m, 99m . 131 ous phytate, 't'c-sulfur colloid, ic-rhenium, I-fat, and 123 I-heptadecanoic acid. " ' The most commonly used radiopharmaceuticals...

  9. A T-Matrix Approach to Heavy Quark Interaction with Thermal Gluons in a Quark Gluon Plasma

    E-Print Network [OSTI]

    Huggins, Kyle

    2012-10-19T23:59:59.000Z

    : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 51 viii LIST OF FIGURES FIGURE Page 2.1 In-medium HQ free and internal energies determined using lattice data [12] in the triplet (solid lines), sextet (dotted lines), and 15-plet (dashed lines) channels at temperatures T = 1:2Tc (left) and 2Tc...) for charm-gluon at 1:2Tc (thick) and 2:0Tc (thin). Diagrams illustrate the s-wave (left) and p-wave (right) for charm-gluon in potential U for the triplet (top), sextet (2nd row), and 15-plet (3rd row) color channels. The bottom diagram corresponds...

  10. Pulmonary deposition and clearance measurements of aerosolized radiopharmaceuticals in the sedated dog

    E-Print Network [OSTI]

    Merton, Dawn Ann

    1986-01-01T23:59:59.000Z

    canine ventilation patterns. Deposition occurred as a zero order process. Tc-tKPA deposi- tion was faster than TcO in most lung regions. Percent deposi- 4 tion of both radiopharmaceuticals was less in the apices than in the base and mid regions... and cleared in the base and mid regions. Clearance curves were biexponen- tial for both radiopharmaceuticals. The intitial phase of clearance was much more rapid for Tc04 than for Tc-VZPA. Fifty percent retained activity was seldom reached for either...

  11. Tank Closure and Waste Management Environmental Impact Statement...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    describes the public comment process for the Draft Tank Closure and Waste Management Environmental Impact Statement for the Hanford Site, Richland, Washington (Draft TC & WM...

  12. andis lazdin jt: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    cycling (TC) loading. The experimental results demonstrate that by combining with fatigue life prediction model the system can be used as a quick and accurate experimental tool for...

  13. Automated Radioanalytical System Incorporating Microwave-Assisted...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    fluidic instrument is described that rapidly determines the total 99Tc content of aged nuclear waste samples, where the matrix is chemically and radiologically complex and the...

  14. Microsoft Word - ORNL-TM-2008-185.doc

    Office of Scientific and Technical Information (OSTI)

    R&D research and development rms root mean square rpm revolutions per minute SEM scanning electron microscopy Si silicon SP specific power TC thermocouple THS Toyota Hybrid...

  15. Characterization and monitoring of subsurface processes using...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    subsurface processes using parallel computing and electrical resistivity imaging."AGU Hydrology Section Newsletter (December 2011):24-28. Authors: TC Johnson MJ Truex DM Wellman J...

  16. arthroplasty preliminary study: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    search and image classification an example from this dataset. The images in the SAIAPR TC-12 dataset are manually segmented and the resulting Lunds Universitet First Page...

  17. absolute radionuclide activity: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Sciences and Ecology Websites Summary: series radionuclides Fuel Fabrication Facility 99 Tc (reprocessing only) Enriched uranium Transuranics (e.g., 237 Np, 239 Pu) (reprocessing...

  18. androgen receptor-mediated apoptosis: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of castrate resistance and novel therapeutic approaches T Karantanos, PG Corn and TC Thompson Prostate cancer) signaling is a critical survival pathway for prostate cancer...

  19. anesthetics intravenous: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Printed in the USA-3892 www.cognizantcommunication.com Intravenous Administration of 99m Tc-HMPAO-Labeled Human Mesenchymal, Centre Hospitalier Universitaire, Grenoble Cedex 9,...

  20. Tank Closure and Waste Management Environmental Impact Statement...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the environmental impacts of construction and operation of a new facility at Hanford equivalent to the Remote Treatment Project (RTP) at INL. Response: This TC & WM EIS provides...

  1. JOURNAL DE PHYSIQUE Colloque C2, supplment au no 4, Tome 33, Avril 1972, page C2-21 LA GNRATION DE LA SECONDE HARMONIQUE

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    .52 where TC=TN, and FM and AF order occur simultaneously. In addition, we2 and others7,8 have suggested

  2. Immobilization of 99-Technetium (VII) by Fe(II)-Goethite and...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of Fe(II) to sequester Tc present in both deionized water and simulated off-gas scrubber waste solutions. Pertechnetate concentration in solution decreased immediately when...

  3. Two Phase Transitions Make a High-Temperature Superconductor

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    generally believed that such a picture also applied to the copper oxide (cuprate) superconductors-first discovered 25 years ago and the current record holders for highest Tc....

  4. Superconductivity with Stripes | Advanced Photon Source

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    between stripe order, superconductivity, and lattice structure in high-Tc superconductors was manipulated in high-pressure experiments at the APS. The physics of...

  5. High-resolution Soft-RIXS: Scientific Goals and Technical Challenges...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    soft x-ray scattering has been recently boosted mainly by results on high Tc superconductors and other cuprates, where orbital and magnetic excitations could be studied with...

  6. Technische Universitt Berlin Tel.: 314-23755 Fakultt II -Mathematik und Naturwissenschaften Stand: 15.01.2014

    E-Print Network [OSTI]

    Nabben, Reinhard

    @physik.tu-berlin.de Merkel, Lars TC 11 22822 24586 merkel@chem.tu-berlin.de Student/inn/en Brose, Felix f.r.brose

  7. Theoretical Studies on the Photoelectron and Absorption Spectra...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Abstract: The tetraoxo pertechnetate anion (TcO4?) is of great interest for nuclear waste management and radiopharmceuticals. To elucidate its electronic structure and to...

  8. nature methods | VOL.7 NO.4 | APRIL 2010 | 269 news and views

    E-Print Network [OSTI]

    Cai, Long

    .B. & Palmer, A.E. Curr. Opin. Chem. Biol. 12, 60­65 (2008). 7. Cabantous, S., Terwilliger, T.C. & Waldo, G

  9. Curriculum Vitae P. RAJ POKKULURI

    E-Print Network [OSTI]

    Kemner, Ken

    jecorina. Proteins, 79, 2588-2592 (2011). 57. F. DiMaio, T.C. Terwilliger, R.R. Read, A. Wlodawer, G

  10. Tzuong-Tsieng Moh's Homepage

    E-Print Network [OSTI]

    A Short Note on TC Kuo-A.Parusinski-L.Paunescu's paper On Jacobian Conjecture. Comment on a Paper by Yucai Su On Jacobian Conjecture.

  11. Using core-shell metamaterial engineering to triple the critical temperature of a superconductor

    E-Print Network [OSTI]

    Smolyaninova, Vera N; Gresock, Thomas; Jensen, Christopher; Prestigiacomo, Joseph C; Osofsky, M S; Smolyaninov, Igor I

    2015-01-01T23:59:59.000Z

    Recent experiments have shown the viability of the metamaterial approach to dielectric response engineering for moderately enhancing the transition temperature, Tc, of a superconductor. In this report, we demonstrate the use of Al2O3-coated aluminium nanoparticles to form the recently proposed epsilon near zero (ENZ) core-shell metamaterial superconductor with a Tc that is three times that of pure aluminium. IR reflectivity measurements confirm the predicted metamaterial modification of the dielectric function thus demonstrating the efficacy of the ENZ metamaterial approach to Tc engineering. These results provide an explanation for the long known, but not understood, enhancement of the Tc of granular aluminum films.

  12. Combined Approaches for Drug Design Points the Way to Novel Proline Racemase Inhibitor Candidates to Fight

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    transfusion or congenitally. Previous research led us to discover a parasite proline racemase (Tc chronic form. A known inhibitor of proline racemases, 2-pyrrolecarboxylic acid (PYC), is water

  13. Technetium Sorption by Cementitious Materials Under Reducing Conditions

    SciTech Connect (OSTI)

    Kaplan, Daniel I. [Savannah River Site (SRS), Aiken, SC (United States); Estes, Shanna L. [Environmental Engineering and Earth Sciences, Clemson University, Clemson, SC (United States); Powell, Brian A. [Environmental Engineering and Earth Sciences, Clemson University, Clemson, SC (United States)

    2012-09-28T23:59:59.000Z

    The objective of this study was to measure technetium ({sup 99}Tc) sorption to cementitious materials under reducing conditions to simulate Saltstone Disposal Facility conditions. {sup 99}Tc(VII) batch sorption experiments were conducted for 319 days in an inert glovebag with a variety of cementitious materials (aged cement, Vault 2, TR545, and TR547) containing varying amounts of blast furnace slag. Between 154 and 319 days, the {sup 99}Tc aqueous concentrations tended to remain constant and samples amended with different initial {sup 99}Tc concentrations, tended to merge at about 10{sup -9} M for Vault 2 (17% slag) and TR545 (90% slag) and 10{sup -8} M for TR547 (45% slag). This data provided strong evidence that solubility, and not adsorption (K{sub d} values), was controlling aqueous {sup 99}Tc concentrations. Laboratory data superimposed over thermodynamic speciation diagrams further supported the conclusion that solubility, and not adsorption controlled {sup 99}Tc aqueous concentrations. The oxidation state of the aqueous {sup 99}Tc at the end of the sorption experiment was determined by solvent extraction to be almost entirely {sup 99}Tc(VII). The pH of the present system was ~11.8. Previously proposed solubility controlling phases including Tc-sulfides may be present, but do not appear to control solubility. After the 319 day sorption period, the suspensions were removed from the glovebag and a desorption step under oxic conditions was conducted for 20 days by adding oxic, pH-buffered solutions to the suspensions. {sup 99}Tc aqueous concentrations increased by more than an order of magnitude and Eh increased by several hundred millivolts within 24 hours after the introduction of the oxic solutions. These desorption results are consistent with re-oxidation and dissolution/desorption of {sup 99}Tc(IV) phases possibly present in the cementitious materials after the anoxic sorption step of the experiment. Aqueous {sup 99}Tc concentrations continued to increase slowly until the termination of the desorption experiment after 20 days. Although the cementitious materials investigated demonstrated the ability to strongly sequester aqueous {sup 99}Tc under anoxic conditions, the introduction of oxygen resulted in the rapid remobilization of {sup 99}Tc. These studies provide experimental support for the use of a solubility based model under reducing saltstone conditions where Tc(IV) is expected to be the dominant species. The existing Kd model would be appropriate for oxidized saltstone conditions (aged saltstone, not directly evaluated in this study) where Tc(VII) is expected to be the dominant species.

  14. Improving Surface Analysis Methods for Characterization of Advanced...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    useful information from a variety of different analysis tools. The International Organization for Standardization (ISO) Committee TC 201 on Surface Chemical Analysis and ASTM...

  15. Fourfold Symmetric Solutions to the Ginzburg Landau Equation for d ...

    E-Print Network [OSTI]

    2011-02-22T23:59:59.000Z

    We are interested in superconductivity for layered materials with small inter- layer coupling. ... material temperature, and Tc is the critical transition temperature.

  16. Injection System and Engine Strategies for Advanced Emission...

    Broader source: Energy.gov (indexed) [DOE]

    Equipment VTG Variable Turbine Geometry EGR Exhaust Gas Recirculation TC Turbo Charger Control Strategies Packaging Fuel Consumption Costs 3 DS-CVNE 686 0130e | 8...

  17. Power Generation Asset Management Technology Roadmap M

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    be done to determine optimal sensor deployment to address these criteria. TC8 Incorporate turbine layouts, make efforts and operational status within wind power plants to have more...

  18. Superconducting vortex pinning with artificially prepared nanostructures

    E-Print Network [OSTI]

    Rosen, Yaniv Jacob

    K. Schuller, Enhanced superconducting vortex pinning withat T/Tc = 0.99 of a superconducting Nb thin film on aof the triangles. The superconducting critical temperature

  19. Estruturas e aplicaes Apresentao

    E-Print Network [OSTI]

    Loh, Watson

    , colesterol. ! Permeabilidade ! Transio gel / lquido-cristalina (Tc) #12;Da membrana ao lipossoma Estrutura do lipdeo Tamanho da cadeia Insaturao Cabea polar Efeito de solutos Colesterol #12

  20. Detection of Damage in a Composite Structure Using Guided Waves

    E-Print Network [OSTI]

    Baid, Harsh Kumar

    2012-01-01T23:59:59.000Z

    Report of the X-33 Liquid Hydrogen Tank Test Investigation Team, NASA Marshall Space Flight Center, May [http://www.tc.cornell.edu/ Research/ CMI/

  1. MOLECULAR MECHANISM OF MICROBIAL TECHNETIUM REDUCTION FINAL REPORT

    SciTech Connect (OSTI)

    DiChristina, Thomas J. [Georgia Tech

    2013-04-30T23:59:59.000Z

    Microbial Tc(VII) reduction is an attractive alternative strategy for bioremediation of technetium-contaminated subsurface environments. Traditional ex situ remediation processes (e.g., adsorption or ion exchange) are often limited by poor extraction efficiency, inhibition by competing ions and production of large volumes of produced waste. Microbial Tc(VII) reduction provides an attractive alternative in situ remediation strategy since the reduced end-product Tc(IV) precipitates as TcO2, a highly insoluble hydrous oxide. Despite its potential benefits, the molecular mechanism of microbial Tc(VII) reduction remains poorly understood. The main goal of the proposed DOENABIR research project is to determine the molecular mechanism of microbial Tc(VII) reduction. Random mutagenesis studies in our lab have resulted in generation of a set of six Tc(VII) reduction-deficient mutants of Shewanella oneidensis. The anaerobic respiratory deficiencies of each Tc(VII) reduction-deficient mutant was determined by anaerobic growth on various combinations of three electron donors and 14 terminal electron acceptors. Results indicated that the electron transport pathways to Tc(VII), NO3 -, Mn(III) and U(VI) share common structural or regulatory components. In addition, we have recently found that wild-type Shewanella are also able to reduce Tc(IV) as electron acceptor, producing Tc(III) as an end-product. The recent genome sequencing of a variety of technetium-reducing bacteria and the anticipated release of several additional genome sequences in the coming year, provides us with an unprecedented opportunity to determine the mechanism of microbial technetium reduction across species and genus lines.

  2. Tropical Cyclone and Monsoon-Induced Rainfall Variability in Taiwan JAU-MING CHEN

    E-Print Network [OSTI]

    Li, Tim

    Tropical Cyclone and Monsoon-Induced Rainfall Variability in Taiwan JAU-MING CHEN Institute March 2010) ABSTRACT This study investigates the interannual variability of tropical cyclone (TC the relative effects of TCs and monsoons, local rainfall in Taiwan is separated into two subcomponents: TC

  3. Journal of the Atmospheric Sciences EARLY ONLINE RELEASE

    E-Print Network [OSTI]

    Miami, University of

    to cite this EOR in a separate work, please use the following full citation: Lee, C., and S. Chen, 2012 It is widely accepted that air-sea interaction is one of the key factors in controlling2 tropical cyclone (TC The ocean plays an important role in tropical cyclone (TC) intensity as many studies have2 shown previously

  4. JOURNAL DE PHYSIQUE Colloque C7, supplment au n12, Tome 43, dcembre 1982 page C7-91

    E-Print Network [OSTI]

    Boyer, Edmond

    -91 THE ASYMMETRY OF POLARIZED NEUTRON CRITICAL SCATTERING FROM Fe ABOVE Tc IN MAGNETIC FIELD A.I. Okorokov, A trois spins. Abstract. - An asymmetry in the critical scattering of polariz- ed neutrons from scattering of unpolarized neutrons in fer- romagnets above the Curie point Tc was shown both theoretically

  5. GACP Progress Report Name: Dr. Si-Chee Tsay

    E-Print Network [OSTI]

    .g., model PIR) to derive and to account for the thermal dome effect of collocated pyranometers. We approximate d = 0.71, (Tc)PSP = (Tc)PIR, and (Td)PSP = 0.996(Td)PIR, and demonstrate that the thermal dome

  6. Superconductivity in gallium-substituted Ba8Si46 clathrates

    E-Print Network [OSTI]

    Li, Yang; Zhang, Ruihong; Liu, Yang; Chen, Ning; Luo, Z. P.; Ma, Xingqiao; Cao, Guohui; Feng, Z. S.; Hu, Chia-Ren; Ross, Joseph H., Jr.

    2007-01-01T23:59:59.000Z

    superconductor, with an onset at T-C approximate to 3.3 K. For x=10 and higher, no superconductivity was observed down to T=1.8 K. This represents a strong suppression of superconductivity with increasing Ga content, compared to Ba8Si46 with T-C approximate to 8...

  7. Preparation and Characterization of Chitosan-Alginate Nanoparticles for Trans-Cinnamaldehyde Entrapment

    E-Print Network [OSTI]

    Loquercio, Andre S

    2014-11-04T23:59:59.000Z

    Rotations per minute s Second SEM Scanning electron microscopy TC Trans-cinnamaldehyde TEM Transmission electron microscopy TSA Tryptic soy agar TSA-YE Tryptic soy agar with yeast extract TSB Tryptic soy broth TPB Tryptose phosphate broth ULCA... ................................................................................ 42 2.4.2 Alginate ................................................................................. 44 2.4.3 Calcium-Alginate Complex .................................................. 46 2.4.4 Trans-cinnamaldehyde (TC...

  8. Enhanced Superconducting Properties of Iron Chalcogenide Thin Films

    E-Print Network [OSTI]

    Chen, Li

    2013-07-26T23:59:59.000Z

    Among the newly discovered iron-based superconductor, FeSe with the simplest structure and a transition temperature (T_c) around 8 K arouses much research interest. Although its Tc is much lower than that of the cuprates, iron chalcogenide has low...

  9. Technetium and the third dredge up in AGB stars II. Bulge stars

    E-Print Network [OSTI]

    Stefan Uttenthaler; Josef Hron; Thomas Lebzelter; Maurizio Busso; Mathias Schultheis; Hans Ulrich Kaeufl

    2006-10-17T23:59:59.000Z

    We searched for Technetium (Tc) in a sample of bright oxygen-rich asymptotic giant branch (AGB) stars located in the outer galactic bulge. Tc is an unstable element synthesised via the s-process in deep layers of AGB stars, thus it is a reliable indicator of both recent s-process activity and third dredge-up. We aim to test theoretical predictions on the luminosity limit for the onset of third dredge-up. Using high resolution optical spectra obtained with the UVES spectrograph at ESO's VLT we search for resonance lines of neutral Tc in the blue spectral region of our sample stars. These measurements allow us to improve the procedure of classification of stars with respect to their Tc content by using flux ratios. Synthetic spectra based on MARCS atmospheric models are presented and compared to the observed spectra around three lines of Tc. Bolometric magnitudes are calculated based on near infrared photometry of the objects. Among the sample of 27 long period bulge variables four were found to definitely contain Tc in their atmospheres. The luminosity of the Tc rich stars is in agreement with predictions from AGB evolutionary models on the minimum luminosity at the time when third dredge-up sets in. However, AGB evolutionary models and a bulge consisting of a single old population cannot be brought into agreement. This probably means that a younger population is present in the bulge, as suggested by various authors, which contains the Tc-rich stars here identified.

  10. THE ELECTRICAL BEHAVIOR OF SUPERCONDUCTING THIN-FILM MICROBRIDGES

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    19 THE ELECTRICAL BEHAVIOR OF SUPERCONDUCTING THIN-FILM MICROBRIDGES SELF-HEATING below Tc their behavior is found to be dominated by the effects of self-heating. At low voltages near Tc. t Danforth Fellow. electrical behavior of these microbridges is largely dominated by the effects of self-heating

  11. arXiv:cond-mat/0402655v126Feb2004 Robust dx2-y2 pairing symmetry in high-temperature superconductors

    E-Print Network [OSTI]

    Paris-Sud 11, Universit de

    and Magnetism, Institute of Physics, University of Augsburg, D-86135 Augsburg, Germany and 3 Laboratoire de, optimal and overdoped regions. Our work implies that time-reversal invariant, predominantly dx2-y2 pairing- pendence of Tc can be described for many hole-doped cuprate systems by the empirical formula [2]: Tc

  12. Dissection of defense responses of skl, an ethylene insensitive mutant of Medicago truncatula

    E-Print Network [OSTI]

    Pedro, Uribe Mejia

    2004-11-15T23:59:59.000Z

    ..............................................................................................................................176 xi LIST OF FIGURES FIGURE 1 Ethylene signal transduction pathway................................................................16 2 Proposed plant defense responses to pathogens and insects .............................. 21 3... gene expression......................................................... 119 25 In silica analysis of Actin homologue TC85697. ............................................. 122 26 In silica analysis of His H3, TC85197...

  13. cene Palaeoecology and Palaeohydrology, B. E. Ber-glund, Ed. (Wiley, Toronto, 1986), pp. 407422.

    E-Print Network [OSTI]

    Golden, Kenneth M.

    at a critical brine volume fraction pc of about 5 percent, or temperature Tc of about ­5°C for salinity of 5 parts per thousand. For temperatures warmer than Tc, brine carrying heat and nutrients can move through consisting of pure ice with brine and air inclusions, whose size and geometry depend on the ice crystal

  14. Superconductivity in gallium-substituted Ba8Si46 clathrates

    E-Print Network [OSTI]

    Li, Yang; Zhang, Ruihong; Liu, Yang; Chen, Ning; Luo, Z. P.; Ma, Xingqiao; Cao, Guohui; Feng, Z. S.; Hu, Chia-Ren; Ross, Joseph H., Jr.

    2007-01-01T23:59:59.000Z

    superconductor, with an onset at T-C approximate to 3.3 K. For x=10 and higher, no superconductivity was observed down to T=1.8 K. This represents a strong suppression of superconductivity with increasing Ga content, compared to Ba8Si46 with T-C approximate to 8...

  15. Efficiency at Maximum Power of Low-Dissipation Carnot Engines Massimiliano Esposito

    E-Print Network [OSTI]

    Kawai, Ryoichi

    , respectively. For engines reaching Carnot efficiency C 1 Tc=Th in the reversible limit (long cycle time , of engines performing finite-time Carnot cycles between a hot and a cold reservoir at temperatures Th and Tc.150603 PACS numbers: 05.70.Ln, 05.20.y Thermal machines performing Carnot cycles transform a certain amount

  16. Tropical Cyclogenesis Associated with Rossby Wave Energy Dispersion of a Preexisting Typhoon. Part I: Satellite Data Analyses*

    E-Print Network [OSTI]

    Li, Tim

    Tropical Cyclogenesis Associated with Rossby Wave Energy Dispersion of a Preexisting Typhoon. Part with the Rossby wave energy dispersion of a preexisting TC. The wave trains are oriented in a northwest induced by tropical cyclone (TC) energy dispersion are revealed based on the Quick Scatterometer (Quik

  17. Inversion tectonics during continental rifting: The Turkana Cenozoic rifted zone, northern Kenya

    E-Print Network [OSTI]

    Brest, Université de

    Inversion tectonics during continental rifting: The Turkana Cenozoic rifted zone, northern Kenya B of inverted deformation within Miocene-Recent basins of the Turkana rift (northern Kenya) in the eastern: The Turkana Cenozoic rifted zone, northern Kenya, Tectonics, 24, TC2002, doi:10.1029/2004TC001637. 1

  18. Charmonium properties in the quark-gluon plasma

    E-Print Network [OSTI]

    M. B. Oktay; M. J. Peardon; J. I. Skullerud; G. Aarts; C. R. Allton

    2007-10-15T23:59:59.000Z

    We present results for charmonium correlators and spectral functions in 2-flavour CD on anisotropic lattices. Our results indicate that the S-waves (J/psi and eta_c) survive up to temperatures close to 2T_c, while the P-waves (chi_c0 and chi_c1) melt away below 1.2T_c.

  19. Chalmers University of Technology Henrik Thunman Department of Energy Conversion

    E-Print Network [OSTI]

    Chalmers University of Technology Henrik Thunman Department of Energy Conversion Modelling of the volume #12;Chalmers University of Technology Henrik Thunman Department of Energy Conversion Momentum University of Technology Henrik Thunman Department of Energy Conversion rad pp qHm x T k xx Tc u t Tc

  20. Detectability of Excitatory versus Inhibitory Drive in an Integrate-and-Fire-or-Burst Thalamocortical Relay Neuron Model

    E-Print Network [OSTI]

    Sherman, S. Murray

    -and-Fire-or-Burst Thalamocortical Relay Neuron Model Gregory D. Smith1 and S. Murray Sherman2 1Department of Applied Science. To test for such potential differences, especially in the context of the function of thalamocortical (TC) relay nuclei, we used a stochastic "integrate-and-fire-or-burst" TC neuron model to quantify

  1. Basin width control of faulting in the Naryn Basin, south central Kyrgyzstan

    E-Print Network [OSTI]

    Bookhagen, Bodo

    Basin width control of faulting in the Naryn Basin, south central Kyrgyzstan Joseph K. Goode,1 the controls on this intramontane basin deformation, we study the Naryn Basin of south central Kyrgyzstan central Kyrgyzstan, Tectonics, 30, TC6009, doi:10.1029/2011TC002910. 1. Introduction [2] Deformation

  2. Process for the extraction of technetium from uranium

    DOE Patents [OSTI]

    Gong, Cynthia-May S. (San Mateo, CA); Poineau, Frederic (Las Vegas, NV); Czerwinski, Kenneth R. (Las Vegas, NV)

    2010-12-21T23:59:59.000Z

    A spent fuel reprocessing method contacts an aqueous solution containing Technetium(V) and uranyl with an acidic solution comprising hydroxylamine hydrochloride or acetohydroxamic acid to reduce Tc(V) to Tc(II, and then extracts the uranyl with an organic phase, leaving technetium(II) in aqueous solution.

  3. tchen@engr.smu.edu www.engr.smu.edu/~tchen

    E-Print Network [OSTI]

    Chen, Thomas M.

    Tom Chen SMU tchen@engr.smu.edu www.engr.smu.edu/~tchen Malware Research at SMU #12;TC/BT/11-5-04 SMU Engineering p. 2 About SMU and Me Virus Research Lab Early Worm Detection Epidemic Modeling New Research Interests Outline #12;TC/BT/11-5-04 SMU Engineering p. 3 About SMU Small private

  4. tchen@engr.smu.edu Research in Computer

    E-Print Network [OSTI]

    Chen, Thomas M.

    Tom Chen SMU tchen@engr.smu.edu Research in Computer Viruses and Worms #12;TC/Londonmet/10-6-04 SMU Engineering p. 2 About Me and SMU Background on Viruses/Worms Research Activities - Virus research lab - Early detection - Epidemic modeling Outline #12;TC/Londonmet/10-6-04 SMU Engineering p. 3 About Me Ph

  5. tchen@engr.smu.edu Phishing to Steal Your PC,

    E-Print Network [OSTI]

    Chen, Thomas M.

    Tom Chen SMU tchen@engr.smu.edu Phishing to Steal Your PC, Money, and Identity #12;TC/Londonmet/12-8-04 SMU Engineering p. 2 What is Phishing? Threats Defenses (Research?) Outline #12;TC/Londonmet/12-8-04 SMU Engineering p. 3 What is Phishing? A social engineering attack: - Email message (type of spam

  6. tchen@engr.smu.edu How to Avoid Losing Your

    E-Print Network [OSTI]

    Chen, Thomas M.

    Tom Chen tchen@engr.smu.edu How to Avoid Losing Your Money and Identity to Phishing #12;TC/EE/2-16-05 SMU Engineering p. 2 What is Phishing? Examples Risks and threats Defenses Outline #12;TC/EE/2-16-05 SMU Engineering p. 3 What is Phishing? A social engineering attack: - E-mail message (spam) appears

  7. A reassessment of the dispersion properties of 99 North Sea and the Norwegian Sea

    E-Print Network [OSTI]

    Drange, Helge

    northwards along the Norwegian coast heading towards the Arctic Ocean. Comparison with observational timeA reassessment of the dispersion properties of 99 Tc in the North Sea and the Norwegian Sea Steinar radionuclide Technetium-99 (99 Tc) in the North and Norwegian Seas have been simulated with a regional

  8. ambident pcn heterocycles: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and equation of state modelling study. Physics Websites Summary: and nitrous oxide (Tc(CO2) 304.21 K; Tc(N2O) 309.57 K; Pc(CO2) 7.38 MPa; Pc(N2O) 7.24 MPa studying...

  9. Specific-heat discontinuity in impure two-band superconductors

    E-Print Network [OSTI]

    Mishonov, TM; Penev, ES; Indekeu, JO; Pokrovsky, Valery L.

    2003-01-01T23:59:59.000Z

    at the critical temperature T-c decreases with increasing disorder, its ratio to the normal-state specific heat at T-c increases and slowly converges to the isotropic value. For strong disorder the deviation from the isotropic value is proportional to the elastic...

  10. The fate of technetium in reduced estuarine sediments: Combining direct and indirect analyses

    E-Print Network [OSTI]

    Burke, Ian

    - mission electron microscopy and gamma camera imaging) and indirect (incubation experiments and chemical extractions) experimental techniques. When TcO4 was incubated in sediment microcosms at micro-molar (106 days), >99% TcO 4 was removed from solution in under 10 min in both micro- bially active and heat

  11. Special linear groups generated by transvections and embedded projective spaces

    E-Print Network [OSTI]

    Cuypers, Hans

    over some skew field L. For any linear map t : W W (acting from the right) and vector w W, we define vector space over L), with kernel CW (t) such that the action of t on W can be described as follows tc : w w + (w)cp for w W. We call Tp, := {tc | c L} the linear transvection subgroup associated

  12. Splenic concentration of bone imaging agents in functional asplenia

    SciTech Connect (OSTI)

    Dhekne, R.D.

    1981-07-01T23:59:59.000Z

    Three cases of sickle cell disease associated with functional asplenia are described. The spleen was not visualized on routine Tc-99m-sulfur colloid scan. The bone scan performed with Tc-99m-phosphate compounds revealed abnormal splenic activity in all three cases. The previous case reports and the literature on this subject are reviewed.

  13. Inelastic Neutron-Scattering Measurements of a Three-Dimensional Spin Resonance in the FeAs-Based BaFe1:9Ni0:1As2 Superconductor

    E-Print Network [OSTI]

    Hu, Jiangping

    , Germany 3 Department of Physics, Zhejiang University, Hangzhou 310027, China 4 Department of Physics-Tc) superconductors is important because spin fluc- tuations may mediate electron pairing for superconductiv- ity. In the case of high-Tc copper oxides, it is now well documented that the spin fluctuation spectrum is domi

  14. Technetium radiodiagnostic fatty acids derived from bisamide bisthiol ligands

    DOE Patents [OSTI]

    Jones, Alun G. (Newton Centre, MA); Lister-James, John (Wellesley, MA); Davison, Alan (Needham, MA)

    1988-05-24T23:59:59.000Z

    A bisamide-bisthiol ligand containing fatty acid substituted thiol useful for producing Tc-labelled radiodiagnostic imaging agents is described. The ligand forms a complex with the radionuclide .sup.99m Tc suitable for administration as a radiopharmaceutical to obtain images of the heart for diagnosis of myocardial disfunction.

  15. JOURNAL DE PHYSIQUE Colloque C6, supplkment au no 8, Tome 39, aotit 1978, page C6-402 SCALE EFFECTS I N FILAMENTARY NIOBIUM T I N DIFFUSION COUPLES

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    I N FILAMENTARY NIOBIUM T I N DIFFUSION COUPLES IMI, P.O. Box 216, Witton, Birmingham B3 7BA- que Tc et le champ HF.2 dans les couples bronze-niobium. La force motrice chimique et l'importance du that phase equilibria can effect critical temperature Tc and field Hc2 in bron- ze-niobium couples. Chemical

  16. Critical phenomena of nuclear matter in the extended Zimanyi-Moszkowski model

    E-Print Network [OSTI]

    Critical phenomena of nuclear matter in the extended Zimanyi-Moszkowski model K. Miyazaki Abstract in nuclear multifragmentation reactions and the critical temperature has been derived as TC = 20 3 MeV in Ref] to estimate the critical temperature for in...nite nuclear matter, that is, TC = 16:6 0:86 Me

  17. Critical Temperature for the Nuclear Liquid-Gas Phase Transition

    E-Print Network [OSTI]

    V. A. Karnaukhov; H. Oeschler; S. P. Avdeyev; E. V. Duginova; V. K. Rodionov; A. Budzanowski; W. Karcz; O. V. Bochkarev; E. A. Kuzmin; L. V. Chulkov; E. Norbeck; A. S. Botvina

    2003-02-07T23:59:59.000Z

    The charge distribution of the intermediate mass fragments produced in p (8.1 GeV) + Au collisions is analyzed in the framework of the statistical multifragmentation model with the critical temperature for the nuclear liquid-gas phase transition $T_c$ as a free parameter. It is found that $T_c=20\\pm3$ MeV (90% CL).

  18. Efficiency at maximum power of low dissipation Carnot engines Massimiliano Esposito

    E-Print Network [OSTI]

    Kawai, Ryoichi

    Efficiency at maximum power of low dissipation Carnot engines Massimiliano Esposito Center the efficiency at maximum power, , of engines performing finite-time Carnot cycles between a hot and a cold reservoir at temperatures Th and Tc, respectively. For engines reaching Carnot efficiency C = 1 - Tc

  19. IAPRS, Vol. XXXIII, Amsterdam, 2000 MODELLING HISTORIC SITES AND MONUMENTS IN 3D HERITAGE INFORMATION

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    IAPRS, Vol. XXXIII, Amsterdam, 2000 MODELLING HISTORIC SITES AND MONUMENTS IN 3D HERITAGE.u-strasbg.fr TC V-8 Site recording and modelling TC V-10 World Cultural heritage and information ABSTRACT The modelling of 3D objects in surveying and particularly of historic monuments is generally

  20. Progress in Lattice QCD at finite temperature

    E-Print Network [OSTI]

    P. Petreczky

    2007-05-19T23:59:59.000Z

    I review recent developements in lattice QCD at finite temperature, including the determination of the transition temperature T_c, equation of state and diffenet static screening lengths. The lattice data suggest that at temperatures above 1.5T_c the quark gluon plasma can be considered as gas consisting of quarks and gluons.

  1. Effect of partial substitution of Ni by Co on the magnetic and magnetocaloric properties of Ni50Mn35In15 Heusler alloy

    E-Print Network [OSTI]

    Adams, Philip W.

    /ferromagnetic transition (T TC). The effective refrigeration capacity at TM and TC for magnetizing field was found [magnetic entropy change (DSM), adiabatic temperature change (DTad), and refrigeration capacity (RC)] shouldEffect of partial substitution of Ni by Co on the magnetic and magnetocaloric properties of Ni50Mn

  2. Cobalt Fischer-Tropsch catalysts having improved selectivity

    DOE Patents [OSTI]

    Miller, James G. (Pearl River, NY); Rabo, Jule A. (Armonk, NY)

    1989-01-01T23:59:59.000Z

    The promoter(s) Mn oxide or Mn oxide and Zr oxide are added to a cobalt Fischer-Tropsch catalyst combined with the molecular sieve TC-103 or TC-123 such that the resultant catalyst demonstrates improved product selectivity, stability and catalyst life. The improved selectivity is evidenced by lower methane production, higher C5+ yield and increased olefin production.

  3. SEBS Core Facility -http://sebs.rutgers.edu/core-facility/ Page 1 School of Environmental & Biological Sciences (SEBS) Core Facility

    E-Print Network [OSTI]

    Goodman, Robert M.

    presented by Anand Ramakrishnan 11:45 AM 12:30 PM GE Healthcare- MicroCal iTC 200 presented by Stoyan 208 Bio Tek Synergy 4 Plate Reader- Anwar Bin Umer, Room 208 iTC 200- Przemek Grela, Room 206 Accuri C, Alexa 594. Fluorescence Equipment The LSM 710 uses a six position turret that houses cubes holding

  4. TOWARDS INTERNATIONAL STANDARDS FOR LANGUAGE

    E-Print Network [OSTI]

    Ide, Nancy

    ) developed by the International Standards Organization TC32 SC4, which is to serve as a basis for harmonizing. It is in this context that a committee of the International Standards Organization (ISO), TC 37/SC 4Chapter # TOWARDS INTERNATIONAL STANDARDS FOR LANGUAGE RESOURCES Nancy Ide and Laurent Romary

  5. Tools and Techniques for Ensuring Automotive EMC Performance and Reliability

    E-Print Network [OSTI]

    Stuart, Steven J.

    of the future ... 10 #12;Automotive EMC Today #12;Automotive EMC Standards Organizations 12 International Electrotechnical Commission (IEC) International Organization for Standards (IOS) Society of Automotive Engineers (SAE) CISPR, TC77 TC22, SC3, WG3 Surface Vehicle EMC Standards Committee #12;Automotive EMC

  6. Dictionary of Upriver Halkomelem, Volume I

    E-Print Network [OSTI]

    Galloway, Brent Douglas

    2009-01-01T23:59:59.000Z

    be peeled', also pet>, //x y p=cT//, also /'carve it,by AC, pet te kwemlxw>, //x y p=cT tc k w cmlc xby AC, pet te sl:y>, //x y p=cT tc s=le y//, /'peel

  7. Structural disorder and its effect on the superconducting transition temperature in the organic superconductor -,,BEDT-TTF...2CuN,,CN...2Br

    E-Print Network [OSTI]

    Zuo, Fulin

    is strongly dependent on the applied pressure with a typical dTc /dP 3 K/kbar.6 Recent 13 C NMR and transport of the effect of the cooling rate on the interlayer transport properties as well as its effect on Tc . By freezing the sample into different disordered states, we find that there is strong evidence

  8. Phase-sensitive harmonic measurements of microwave nonlinearities in cuprate thin films Dragos I. Mircea,1 Hua Xu,2 and Steven M. Anlage3

    E-Print Network [OSTI]

    Anlage, Steven

    Phase-sensitive harmonic measurements of microwave nonlinearities in cuprate thin films Dragos I- mental physics of these materials. Phase-sensitive third-order harmonic-voltage data u~3f = u3f exp i 3f close to the critical temperature Tc. As temperature is increased from below Tc, the harmonic magnitude

  9. Kinetics of Silicothermic Reduction of Calcined Dolomite in Flowing Argon

    E-Print Network [OSTI]

    Liley, David

    of Experimental Rig De oxi dat ion Fu rn ac e TC TC Copper Turning Reduction Furnace Argon Gas Condenser Gas wash. Disadvantages: high impurity, high condenser area #12;© Swinburne University of Technology Aim of the project the fundamental physical chemistry Thermodynamic modelling Kinetic analysis High temperature experiments

  10. PLASMAS ASTROPHYSIQUES nicole.meyer@obspm.fr

    E-Print Network [OSTI]

    Meyer-Vernet, Nicole

    PLASMAS ASTROPHYSIQUES nicole.meyer@obspm.fr "Quatrime tat de la matire""Quatrime tat de la matire" TC 9 http://lesia.obspm.fr/~meyer FORMATION DE LA VAPEUR - A la vue de l'esprit, la matire s inter stellaire magntosphre TC9 - N. Meyer - 2008/2009 3) ENSEMBLES DE PARTICULES - Fonctions de

  11. arXiv:cond-mat/0504741v128Apr2005 d = 3 Anisotropic and d = 2 tJ Models

    E-Print Network [OSTI]

    Gozuacik, Devrim

    to the superconducting phase in high-Tc materials, persists even for strong anisotropy. While the phase appears at low of the superconducting phase in high-Tc materials.[4, 5] In fact, the calculated superfluid weight shows a marked peak regime, which is the one directly relevant to high-temperature superconductivity. The extension

  12. JOURNAL DE PHYSIQUE Colloque C8, Supplkment au no 12, Tome 49, d6cembre 1988

    E-Print Network [OSTI]

    Boyer, Edmond

    -Tc superconductors is reported. The magnetic cycle of granular materials is characterized by a low field (H -high-Tc superconduct- ing ceramics often exhibit four more characteristic fields ( H s (520 G ), H z (W 50-100 G) , H

  13. Corrosion of Metal Inclusions In Bulk Vitrification Waste Packages

    SciTech Connect (OSTI)

    Bacon, Diana H.; Pierce, Eric M.; Wellman, Dawn M.; Strachan, Denis M.; Josephson, Gary B.

    2006-07-31T23:59:59.000Z

    The primary purpose of the work reported here is to analyze the potential effect of the release of technetium (Tc) from metal inclusions in bulk vitrification waste packages once they are placed in the Integrated Disposal Facility (IDF). As part of the strategy for immobilizing waste from the underground tanks at Hanford, selected wastes will be immobilized using bulk vitrification. During analyses of the glass produced in engineering-scale tests, metal inclusions were found in the glass product. This report contains the results from experiments designed to quantify the corrosion rates of metal inclusions found in the glass product from AMEC Test ES-32B and simulations designed to compare the rate of Tc release from the metal inclusions to the release of Tc from glass produced with the bulk vitrification process. In the simulations, the Tc in the metal inclusions was assumed to be released congruently during metal corrosion as soluble TcO4-. The experimental results and modeling calculations show that the metal corrosion rate will, under all conceivable conditions at the IDF, be dominated by the presence of the passivating layer and corrosion products on the metal particles. As a result, the release of Tc from the metal particles at the surfaces of fractures in the glass releases at a rate similar to the Tc present as a soluble salt. The release of the remaining Tc in the metal is controlled by the dissolution of the glass matrix. To summarize, the release of 99Tc from the BV glass within precipitated Fe is directly proportional to the diameter of the Fe particles and to the amount of precipitated Fe. However, the main contribution to the Tc release from the iron particles is over the same time period as the release of the soluble Tc salt. For the base case used in this study (0.48 mass% of 0.5 mm diameter metal particles homogeneously distributed in the BV glass), the release of 99Tc from the metal is approximately the same as the release from 0.3 mass% soluble Tc salt in the castable refractory block and it is released over the same time period as the salt. Therefore, to limit the impact of precipitated Fe on the release of 99Tc, both the amount of precipitated Fe in the BV glass and the diameter of these particles should be minimized.

  14. DESIGN OF A SUBCRITICAL AQUEOUS TARGET SYSTEM FOR MEDICAL ISOTOPE PRODUCTION

    E-Print Network [OSTI]

    Vega, Richard Manuel

    2013-12-10T23:59:59.000Z

    that are typically produced in reac- tors, but with much less efficiency and very low yields. I.A.1.1. 99Mo The primary use of 99Mo is to produce 99mTc. 99Mo decays by beta emission with a 65.94 hr half life into 99mTc. [3] 99mTc then decays with a half life... of 6.01 hr by internal conversion while emit- ting a 143 keV gamma particle. [4] The primary use of 99mTc is in medical diagnostic imaging. The 99mTc can be injected into the body with a pharmaceutical, which transports it to the region of the body...

  15. Technitium Management at the Hanford Site

    SciTech Connect (OSTI)

    Robbins, Rebecca A.

    2013-08-15T23:59:59.000Z

    Long Abstract. Full Text. The Hanford tank waste contains approx 26,000 Ci of technetium-99 (Tc-99), the majority of which is in the supernate fraction. Tc-99 is a long-lived radionuclide with a half-life of approx 212,000 years and, in its predominant pertechnetate (TcO{sub 4}) form, is highly soluble and very mobile in the vadose zone and ultimately the groundwater. Tc-99 is identified as the major dose contributor (in groundwater) by past Hanford site performance assessments and therefore considered a key radionuclide of concern at Hanford. The United States Department of Energy (DOE) River Protection Project's (RPP) long-term Tc-99 management strategy is to immobilize the Tc-99 in a waste form that will retain the Tc-99 for many thousands of years. To achieve this, the RPP flowsheet will immobilize the majority of the Tc-99 as a vitrified low-activity waste product that will be ultimately disposed on site in the Integrated Disposal Facility. The Tc-99 will be released gradually from the glass at very low rates such that the groundwater concentrations at any point in time would be substantially below regulatory limits.The liquid secondary waste will be immobilized in a low-temperature matrix (cast stone) and the solid secondary waste will be stabilized using grout. Although the Tc-99 that is immobilized in glass will meet the release rate for disposal in IDF, a proportion is driven into the secondary waste stream that will not be vitrified and therefore presents a disposal risk. If a portion of the Tc-99 were to be removed from the Hanford waste inventory and disposed off-site, (e.g., as HLW), it could lessen a major constraint on LAW waste form performance, i.e., the requirement to retain Tc-99 over thousands of years and have a positive impact on the IDF Performance Assessment. There are several technologies available at various stages of technical maturity that can be employed for Tc-99 removal. The choice of technology and the associated efficacy of the technology are dependent on the chemical fonn of the technetium in the waste, the removal location in the tlowsheet. and the ultimate disposition path chosen for the technetium product. This paper will discuss the current plans for the management of the technetium present in the Hanford tank waste. It will present the risks associated with processing technetium in the current treatment flowsheet and present potential mitigation opportunities, the status of available technetium removal technologies, the chemical speciation of technetium in the tank waste, and the available disposition paths and waste forms for technetium containing streams.

  16. Development of Alternative Technetium Waste Forms

    SciTech Connect (OSTI)

    Czerwinski, Kenneth

    2013-09-13T23:59:59.000Z

    The UREX+1 process is under consideration for the separation of transuranic elements from spent nuclear fuel. The first steps of this process extract the fission product technicium-99 ({sup 99}Tc) into an organic phase containing tributylphosphate together with uranium. Treatment of this stream requires the separation of Tc from U and placement into a suitable waste storage form. A potential candidate waste form involves immobilizing the Tc as an alloy with either excess metallic zirconium or stainless steel. Although Tc-Zr alloys seem to be promising waste forms, alternative materials must be investigated. Innovative studies related to the synthesis and behavior of a different class of Tc materials will increase the scientific knowledge related to development of Tc waste forms. These studies will also provide a better understanding of the behavior of {sup 99}Tc in repository conditions. A literature survey has selected promising alternative waste forms for further study: technetium metallic alloys, nitrides, oxides, sulfides, and pertechnetate salts. The goals of this project are to 1) synthesize and structurally characterize relevant technetium materials that may be considered as waste forms, 2) investigate material behavior in solution under different conditions of temperature, electrochemical potential, and radiation, and 3) predict the long-term behavior of these materials.

  17. Influence of Alkaline Co-Contaminants on Technetium Mobility in Vadose Zone Sediments

    SciTech Connect (OSTI)

    Szecsody, James E.; Jansik, Danielle P.; McKinley, James P.; Hess, Nancy J.

    2014-09-01T23:59:59.000Z

    Pertechnetate was slowly reduced in a natural, untreated arid sediment under anaerobic conditions (0.02 nmol g-1 h-1), which could occur in low permeability zones in the field, most of which was quickly oxidized. A small portion of the surface Tc may be incorporated into slowly dissolving surface phases, so was not readily oxidized/remobilized into pore water. In contrast, pertechnetate reduction in an anaerobic sediment containing adsorbed ferrous iron as the reductant was rapid (15 to 600 nmol g-1 h-1), and nearly all (96 - 98%) was rapidly oxidized/remobilized (2.6 to 6.8 nmol g-1 h-1) within hours. Tc reduction in an anaerobic sediment containing 0.5 to 10 mM sulfide showed a relatively slow reduction rate (0.01 to 0.03 nmol g-1 h-1) that was similar to observations in the natural sediment. Pertechnetate infiltration into sediment with a highly alkaline water resulted in rapid reduction (0.07 to 0.2 nmol g-1 h-1) from ferrous iron released during biotite or magnetite dissolution. Oxidation of NaOH-treated sediments resulted in slow Tc oxidation (~0.05 nmol g-1 h-1) of a small fraction of the surface Tc (13% to 23%). The Tc remaining on the surface was TcIV (by XANES), and autoradiography and elemental maps of Tc (by electron microprobe) showed Tc was present associated with specific minerals, rather than being evenly distributed on the surface. Dissolution of quartz, montmorillonite, muscovite, and kaolinite also occurred in the alkaline water, resulting in significant aqueous silica and aluminum. Over time, aluminosilicates cancrinite, zeolite and sodalite were precipitating. These precipitates may be coating surface Tc(IV) phases, limiting reoxidation.

  18. The use of beta-tricalcium phosphate in surgically created subchondral bone defects in horses

    E-Print Network [OSTI]

    Rose, Patricia Lee

    1986-01-01T23:59:59.000Z

    . Butazolidin, Wellcome Animal Health, Kansas City, MO. 18 imaged at 4 weeks postoperative. Each horse was administered 100 mi i)i curie intravenously of Tc (as the methylene d1phosphonate 99m complex L Tc-MDP]) . Nuclear scans were obtained from the 99m n... Duncan test was performed to evaluate the s1gnificance of position (dorsopalmar, lateral). The Group I horses were compared at week 4 and week 13. Tc-Nethylene D1phosphonate, Mallinckrodt, St. Louis, NO. GE Portacamera, General Electric Co. , Medical...

  19. An evaluation of some parameters of renal glomerular and tubular function in normal cats

    E-Print Network [OSTI]

    Russo, Elizabeth Angela

    1983-01-01T23:59:59.000Z

    urinalysis study, GFR was determined by plasma disappear ance of SmTc(Sn)DTPA. The P mTc(Sn)DTPA was prepared by combining the eluent from a PPMo-SPTc generatorh with lyophilized stannous DTPA. A dose for injection snd a standard were drawn, and the activ... Tc(Sn)DTPA) clearance was made immediately following the second quantitative urinalysis and results were used to verify the value of 24-hour endogenous creatinine clearance as an estimate of glomerular filtration rate in the cat. DEDICATION...

  20. Processing and optimization of bulk La??[x]Ca[x]MnO?[][delta

    E-Print Network [OSTI]

    Ybarra, Ignacio

    2013-02-22T23:59:59.000Z

    anomalies. Figure 3 shows the resistance curve comparisons for x=0. 33 before and after annealing (note the resistance axis in LOG scale). The curve transition from I to 2 was the most surprising, since previous research concluded that Tc was to increase... periods. Other unexpected characteristics of the resistance curves are the low Tc temperatures (& 188K) and broad tail during transition into the FM metallic phase. In previous research, Tc was shown to be -260K [2] with a very steep drop in resistance...

  1. Determination of glomerular filtration rate by external counting methods

    E-Print Network [OSTI]

    Sartor, Tammy Lee

    1981-01-01T23:59:59.000Z

    comparing the DTPA to other accepted methods; the results were very favorable for the use of ggmTC-DTPA. Klopper et al. , sa1d mTc-DTPA ". . . rapidly prepared by a kit method, is a useful addition to the list of radiopharmaceuticals that can be used... points. First, the external counting method is suitable as a true means of determining the glomerular filtration rate (GFR). Second, the method is applicable to cats. To do this, five dogs were injected with ggmTc(Sn)-DTPA. Plasma samples were drawn...

  2. Calculation of the lesion radiation absorbed dose in canines treated with samarium-153 EDTMP

    E-Print Network [OSTI]

    Poston, John W

    1989-01-01T23:59:59.000Z

    tissue was also low. The bone/muscle and bone/blood uptake ratios were higher with Sm-153 EDTMP than those observed with technetium-99m (Tc-99m) methylene diphosphonate (MDP). Retention of the Sm-153 in the skeleton was measured over a 3-day period... and blood and a high uptake in the skeleton 3 hours postinjection in rabbits. Results also show that Sm-153 EDTMP clears the blood more rapidly than Tc-99m MDP or Tc-99m pyrophosphate. No significant nonosseous accumulation of Sm-153 was observed...

  3. Wavelet analysis of event by event fluctuations

    E-Print Network [OSTI]

    P. Manimaran; Prasanta K. Panigrahi

    2006-03-18T23:59:59.000Z

    The temporal fluctuations of produced hadron density in heavy ion collisions, modelled by 2D Ising model at temperatures $T_c$ and below, are studied through a recently developed wavelet based fluctuation analysis method. At $T_c$, long-range correlated multifractal behavior, matching with the recently observed Hurst exponent $H\\simeq 1$, is found. Below $T_c$ uncorrelated monofractal behavior is seen. The correlation behavior compares well with the results obtained from continuous wavelet based average wavelet co-efficient method, as well as with Fourier power spectral analysis.

  4. Effects of Temperature and Host Plants on Population Dynamics of the Cotton Fleahopper, Pseudatomoscelis seriatus.

    E-Print Network [OSTI]

    Gaylor, Michael J.; Sterling, Winfield L.

    1976-01-01T23:59:59.000Z

    . female eggs1 in weeks (X) from 100 eggs (1x1 femalelweek (mx) Ixmx Ro = net reproductive rate per generation = C lxmx Tc = generation time in days = ~lxmx~/~lxmx = 3.8884 rc = capacity for increase = logeRo/Tc = 0.8230 h = finite rate of increase per... F) to 1.6 for fleahoppers reared on beans and potatoes at 35.0 degrees C (95 degrees F). The shortest mean generation time (Tc) was 3.87 weeks on flowering croton at 26.7 degrees C, but comparable values were obtained for groups of fleahoppers...

  5. Smoothness of the Gap Function in the BCS-Bogoliubov Theory of Superconductivity

    E-Print Network [OSTI]

    Shuji Watanabe

    2010-06-07T23:59:59.000Z

    We deal with the gap equation in the BCS-Bogoliubov theory of superconductivity, where the gap function is a function of the temperature $T$ only. We show that the squared gap function is of class $C^2$ on the closed interval $[\\,0,\\,T_c\\,]$. Here, $T_c$ stands for the transition temperature. Furthermore, we show that the gap function is monotonically decreasing on $[0,\\,T_c]$ and obtain the behavior of the gap function at $T=T_c$. We mathematically point out some more properties of the gap function.

  6. Increased superconducting transition temperature of a niobium thin-film proximity-coupled to gold nanoparticles using linking organic molecules

    E-Print Network [OSTI]

    Katzir, Eran; Zeides, Felix; Katz, Nadav; Kalcheim, Yoav; Millo, Oded; Leitus, Gregory; Myasodeyov, Yuri; Shapiro, Boris Ya; Naaman, Ron; Paltiel, Yossi

    2011-01-01T23:59:59.000Z

    The superconducting critical temperature, TC, of thin Nb films is significantly modified when gold nanoparticles (NPs) are chemically linked to the Nb film, with a consistent enhancement when using 3 nm long disilane linker molecules. The TC increases by up to 10% for certain linker length and NPs size. No change is observed when the nanoparticles are physisorbed with non-linking molecules. Electron tunneling spectra acquired on the linked NPs below TC typically exhibit zero-bias peaks. We attribute these results to a pairing mechanism coupling electrons in the Nb and the NPs, mediated by the organic linkers.

  7. Increased superconducting transition temperature of a niobium thin-film proximity-coupled to gold nanoparticles using linking organic molecules

    E-Print Network [OSTI]

    Eran Katzir; Shira Yochelis; Felix Zeides; Nadav Katz; Yoav Kalcheim; Oded Millo; Gregory Leitus; Yuri Myasodeyov; Boris Ya. Shapiro; Ron Naaman; Yossi Paltiel

    2011-11-02T23:59:59.000Z

    The superconducting critical temperature, TC, of thin Nb films is significantly modified when gold nanoparticles (NPs) are chemically linked to the Nb film, with a consistent enhancement when using 3 nm long disilane linker molecules. The TC increases by up to 10% for certain linker length and NPs size. No change is observed when the nanoparticles are physisorbed with non-linking molecules. Electron tunneling spectra acquired on the linked NPs below TC typically exhibit zero-bias peaks. We attribute these results to a pairing mechanism coupling electrons in the Nb and the NPs, mediated by the organic linkers.

  8. Charmonium spectra at finite temperature from QCD sum rules with the maximum entropy method

    E-Print Network [OSTI]

    Philipp Gubler; Kenji Morita; Makoto Oka

    2011-08-30T23:59:59.000Z

    Charmonia spectral functions at finite temperature are studied using QCD sum rules in combination with the maximum entropy method. This approach enables us to directly obtain the spectral function from the sum rules, without having to introduce any specific assumption about its functional form. As a result, it is found that while J/psi and eta_c manifest themselves as significant peaks in the spectral function below the deconfinement temperature T_c, they quickly dissolve into the continuum and almost completely disappear at temperatures between 1.0 T_c and 1.1 T_c.

  9. arc welding dynamic: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Materials Science Websites Summary: diffusivity specific heat thermal conductivity 2 operating parameter (n qv 4a p Tc - T0 net heat i nput- CHANGES OF WELD POOL SHAPE BY...

  10. RF breakdown effects in microwave power amplifiers

    E-Print Network [OSTI]

    Arumilli, Gautham Venkat

    2007-01-01T23:59:59.000Z

    Electrical stresses in the transistors of high-efficiency switching power amplifiers can lead to hot-electron-induced "breakdown" in these devices. This thesis explores issues related to breakdown in the Transcom TC2571 ...

  11. "I want some fusion soon" Dale M. Meade

    E-Print Network [OSTI]

    Technology Features - High Power density ~5 MW/m3 - Hi Tc Superconductors - Neutron Resistant >150 dpa Stellarator 1996 Tokamak 1969 (T-3) Reversed Field Pinch(Te) 2000 Field Reversed Configuration 1983

  12. Evaluation of a High Intensity Focused Ultrasound-Immobilized...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    is simple, reproducible, cost effective, and rapid, and thus well-suited for automation. Citation: Lopez-Ferrer D, KK Hixson, HS Smallwood, TC Squier, K Petritis, and RD...

  13. A Conceptual Model for Floodplains in the Sacramento-San Joaquin Delta

    E-Print Network [OSTI]

    Opperman, Jeffrey J.

    2012-01-01T23:59:59.000Z

    Biology Moyle PB, Baxter RD, Sommer TR, Foin TC, MaternSA.Society. p 83138. Feyrer F, Sommer T, Harrell W. 2006a.2):115126. Feyrer F, Sommer T, Harrell W. 2006b. Managing

  14. Embryonic and Larval Development of Sacramento Splittail Pogonichthys macrolepidotus

    E-Print Network [OSTI]

    Deng, Xin; Teh, Swee J.; Doroshov, Serge I.; Hung, Silas S. O.

    2012-01-01T23:59:59.000Z

    p. Moyle PB, Baxter RD, Sommer T, Foin TC, Mater SA. 2004.66:797816. Feyrer F, Sommer TR, Baxter R. 2005. Spatial-KS): Allen Press. p 1122. Sommer T, Baxter R, Herbold B.

  15. Habitat Variability and Complexity in the Upper San Francisco Estuary

    E-Print Network [OSTI]

    Moyle, Peter B; Lund, Jay R.; Bennett, William A; Fleenor, William E.

    2010-01-01T23:59:59.000Z

    uc/item/0d52737t. Grimaldo LF, Sommer T, Van Ark N, Joes G,Science Moyle PB, Baxter RD, Sommer T, Foin TC, Matern SA.University Press. p 141-170. Sommer TR, Nobriga ML, Harrell

  16. Beyond the Price Effect in Time-of-Use Programs: Results from a Municipal Utility Pilot, 2007-2008

    E-Print Network [OSTI]

    Lutzenhiser, Susan

    2010-01-01T23:59:59.000Z

    Alexander, Barbara. 2007. Smart Meters, Real Time Pricing,http://www.pulp.tc/Smart_Meters__Real_Time.pdf. Oak Ridge,are scheduled to receive smart meters in the coming years.

  17. Manufacturing and Design Online by the SEAS

    E-Print Network [OSTI]

    Jalali. Bahram

    , & Analysis (Instructor: Prof. R. Gadh) 3. MAE 171B. Digital Control of Physical Systems (Instructor: Prof. T Daniel Yang Rajit Gadh T-C. Tsao Nasr Ghoniem Greg Carman J.-M. Yang

  18. Implementation of genomics and bioinformatics approaches for identification and characterization of tomato ripening-related genes

    E-Print Network [OSTI]

    Fei, Zhangjun

    2004-09-30T23:59:59.000Z

    .?????????. 138 28 Sample TED expression ratio search form and result???? 139 29 Data mining tools in TED.??????????????. 140 30 TED TC mining query form and its results. ???????. 142 xi LIST OF TABLES TABLE...

  19. Technetium production: a feasibility study for Texas A&M University nuclear science center

    E-Print Network [OSTI]

    Hearne, David Douglass

    1997-01-01T23:59:59.000Z

    The affordability and feasibility of the production of the metastable nuclide of technetium (Tc-99m) by neutron capture activation of molybdenum trioxide (with a subsequent solvent extraction) has been explored for the Texas A&M University, Nuclear...

  20. HBCU College Festival sponsored by Alfred Street Baptist Church

    Broader source: Energy.gov [DOE]

    Location: T.C. Williams High School, 3330 King St, Alexandria, VA 22302Attendees: Rauland Sharp (HC) and Dameone Ferguson (NNSA)POC: Chester ScottWebsite:http://bit.ly/1BARRqp

  1. Understanding the Mechanism of H+ -Induced Demetalation as a Design

    E-Print Network [OSTI]

    Hendrich, Mike

    . Rickard,§ Richard E. Norman,| Colin P. Horwitz, and Terrence J. Collins*, Department of Chemistry at Monroe, CNSB-210, Monroe, Louisiana 71209 Received June 17, 2003; E-mail: hendrich@andrew.cmu.edu; tc1u@andrew

  2. Rotationally Resolved Ground State Vibrational Levels of HC2S Studied by Two-Color Resonant Four-Wave Mixing

    E-Print Network [OSTI]

    Maier, John Paul

    ), 4 (CCH bend), and 5 (CCS bend) vibrations. This illustrates the power and advantages of the TC significant loss, reducing background due to stray light. This approach shows the potential of providing

  3. Midlevel Ventilation's Constraint on Tropical Cyclone Intensity

    E-Print Network [OSTI]

    Tang, Brian Hong-An

    Midlevel ventilation, or the flux of low-entropy air into the inner core of a tropical cyclone (TC), is a hypothesized mechanism by which environmental vertical wind shear can constrain a tropical cyclones intensity. An ...

  4. ancylostoma caninum larvae: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    nucleotide sequence of Tc-cpz-1 has Maizels, Rick 3 SARDINE EGGS AND LARVAE AND OTHER FISH LARVAE, Environmental Sciences and Ecology Websites Summary: SARDINE EGGS AND LARVAE...

  5. Intercomparison of 14C Analysis of Carbonaceous Aerosols: Exercise 2009

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    analysis of carbonaceous aerosols: recent developments.Source apportionment of aerosols by 14 C measurements inAnalysis of Carbonaceous Aerosols Table 2a 14 C(TC) results

  6. ANL/APS/TB-34 Experimental Facilities Division

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    for medical imaging applications. The lens is designed to focus the 141-keV gamma ray from 99m Tc, which is injected into the blood stream of cancer patients. Fast growing...

  7. Microsoft Word - All Discounts updated March 2015

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    TC Fleet Services is your one-stop shop for all of your automotive service and tire needs. We are conveniently located in the Hanford Research District to service your...

  8. Molecular Ecology Resources (2008) 8, 230232 doi: 10.1111/j.1471-8286.2007.01934.x 2007 The Authors

    E-Print Network [OSTI]

    Harvell, Catherine Drew

    , and include individuals cultured from diseased sea fans in the Bahamas, Florida, Mexico, and the Nether- land of genomic fragments was enriched by hybridization with synthetic single- stranded biotinylated di- (GT, TC

  9. Extreme rainfall intensities and long-term rainfall risk from tropical cyclones

    E-Print Network [OSTI]

    Langousis, Andreas, 1981-

    2009-01-01T23:59:59.000Z

    We develop a methodology for the frequency of extreme rainfall intensities caused by tropical cyclones (TCs) in coastal areas. The mean rainfall field associated with a TC with maximum tangential wind speed Vmax, radius ...

  10. OCTOBER-NOVEMBER FORECAST FOR 2014 CARIBBEAN BASIN HURRICANE ACTIVITY

    E-Print Network [OSTI]

    Collett Jr., Jeffrey L.

    and hurricanes, but instead predicts both hurricane days and Accumulated Cyclone Energy (ACE). Typically, while) tropical cyclone (TC) activity. We have decided to issue this forecast, because Klotzbach (2011) has

  11. NorthStar Medical Technologies LLC

    National Nuclear Security Administration (NNSA)

    strategic sustainability performance plan Tc-99m metastable technetium-99 USFWS U.S. Fish and Wildlife Service USGS U.S. Geological Survey WDNR Wisconsin Department of Natural...

  12. andpacific topical cyclogenesis: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Associated with Rossby Wave Energy Dispersion of a Preexisting Typhoon. Part in a 3D model. A new TC with realistic dynamic and thermodynamic structures forms in the wake of a...

  13. Method for treating liquid wastes

    DOE Patents [OSTI]

    Katti, K.V.; Volkert, W.A.; Singh, P.; Ketring, A.R.

    1995-12-26T23:59:59.000Z

    The method of treating liquid waste in a media is accomplished by exposing the media to phosphinimines and sequestering {sup 99}Tc from the media by the phosphinimine (PN) functionalities. The system for treating the liquid waste in the media includes extraction of {sup 99}TcO{sub 4}{sup {minus}} from aqueous solutions into organic solvents or mixed organic/polar media, extraction of {sup 99}Tc from solutions on a solid matrix by using a container containing PN functionalities on solid matrices including an inlet and outlet for allowing flow of media through an immobilized phosphinimine ligand system contained within the container. Also, insoluble suspensions of phosphinimine functionalities on solid matrices in liquid solutions or present on supported liquid membranes (SLM) can be used to sequester {sup 99}Tc from those liquids. 6 figs.

  14. STATUS REPORT ON THE LACARA EXPERIMENT

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    T.C. Marshall 1 , J.L. Hirshfield 2,3 , M.A. LaPointe 2 1 Department of Applied Physics, Columbia University, New York City, NY 10027 2 Department of Physics, Yale University,...

  15. Method for treating liquid wastes

    DOE Patents [OSTI]

    Katti, Kattesh V. (Columbia, MO); Volkert, Wynn A. (Columbia, MO); Singh, Prahlad (Columbia, MO); Ketring, Alan R. (Columbia, MO)

    1995-01-01T23:59:59.000Z

    The method of treating liquid waste in a media is accomplished by exposing the media to phosphinimines and sequestering .sup.99 Tc from the media by the phosphinimine (PN) functionalities. The system for treating the liquid waste in the media includes extraction of .sup.99 TcO.sub.4.sup.- from aqueous solutions into organic solvents or mixed organic/polar media, extraction of .sup.99 Tc from solutions on a solid matrix by using a container containing PN functionalities on solid matrices including an inlet and outlet for allowing flow of media through an immobilized phosphinimine ligand system contained within the container. Also, insoluble suspensions of phosphinimine functionalities on solid matrices in liquid solutions or present on supported liquid membranes (SLM) can be used to sequester .sup.99 Tc from those liquids.

  16. The paradox of success: the roll of capital markets in determining British policy toward the European common currency, 1979-1996

    E-Print Network [OSTI]

    Walker, Caton Montgomery

    2013-02-22T23:59:59.000Z

    (I'LDC) Intern, summer 1998 Rcsearched trends m Economic Developinent (ED) Conducted survey of potential ED prospects Provided 1998 updates for annual publications Conducted various research related to operations, strategic planmng of TC...

  17. Lipoprotein cholesterol and progesterone secretion in cycling pony mares fed a control or a fat-supplemented diet

    E-Print Network [OSTI]

    Campbell, Marshall Alice

    1998-01-01T23:59:59.000Z

    The objective of this study was to quantify concentrations of serum progesterone, total cholesterol (TC), and lipoprotein-cholesterol fractions (HDL, LDL, and VLDL) in cycling pony mares fed a conventional versus a 12% fat-supplemented (animal fat...

  18. Tank Closure and Waste Management Environmental Impact Statement...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    should be less than 5 meters (16.4 feet), approximately 10 percent of the gradient in the water table elevation. The residual distribution should meet the needs of this TC & WM...

  19. Analytical Chemistry Laboratory progress report for FY 1992

    SciTech Connect (OSTI)

    Green, D.W.; Heinrich, R.R.; Graczyk, D.G.; Lindahl, P.C.; Boparai, A.S.; Bass, D.A.

    1992-12-01T23:59:59.000Z

    The ACL activities covered IFR fuel reprocessing, corium-concrete interactions, environmental samples, wastes, WIPP support, Advanced Photon Source, H-Tc superconductors, EBWR vessel, soils, illegal drug detection, quality control, etc.

  20. CX-008617: Categorical Exclusion Determination | Department of...

    Broader source: Energy.gov (indexed) [DOE]

    is to convert the existing 735-13A storage facility into a shop for use by Nevada Test Site Engineering. It will reuse equipment installed per E-MT-A-00008 & TC-A-2012-0034 for...