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1

High Tc Superconductivity  

NLE Websites -- All DOE Office Websites (Extended Search)

by C. Kim (SSRL), D. H. Lu (Stanford), K. M. Shen (Stanford) and Z.-X. Shen (Stanford/SSRL) by C. Kim (SSRL), D. H. Lu (Stanford), K. M. Shen (Stanford) and Z.-X. Shen (Stanford/SSRL) Extensive research efforts to study the novel electronic properties of high-Tc superconductors and their related materials by angle-resolved photoemission spectroscopy at a recently commissioned Beam Line 5-4 (led by Z.-X. Shen) continue to be successful, producing many important results. These results, which are highlighted by five articles recently published in Physical Review Letters and one in Science, brought our understanding steps closer to solving the mystery of the high-Tc superconductivity. With the development of the latest generation of ultra-high resolution electron spectrometers in the past few years, the technique of angle resolved photoemission spectroscopy (ARPES) has recently experienced a renaissance. Nowhere is this revolution more evident than in the study of the high-temperature superconductors, which more than a decade after their discovery, continue to defy theoretical explanation. Recent ARPES experiments performed at Beam Line 5-4 have led to critical new discoveries about the fundamental nature of these mysterious superconductors and are now changing the way that the physics community views these materials. An excellent benchmark for the huge leap in detector resolution and technology is the recent work on Sr2RuO4. Although it belongs to a slightly different family than the high- temperature superconductors, its exotic superconducting mechanism (Tc = 1K) and complex electronic structure make it itself a fascinating material. In the past, due to poor resolutions, ARPES studies on this material were in disagreement with theory and other experimental techniques.

2

Technetium Removal Using Tc-Goethite Coprecipitation  

SciTech Connect

This report describes the results from laboratory tests performed at Pacific Northwest National Laboratory for the U.S. Department of Energy (DOE) EM-31 Support Program (EMSP) subtask, “Low temperature waste forms coupled with technetium removal using an alternative immobilization process such as Fe(II) treated-goethite precipitation” to increase our understanding of 99Tc long-term stability in goethite mineral form and the process that controls the 99Tc(VII) reduction and removal by the final Fe (oxy)hydroxide forms. The overall objectives of this task were to 1) evaluate the transformation process of Fe (oxy)hydroxide solids to the more crystalline goethite (?-FeOOH) mineral for 99Tc removal and 2) determine the mechanism that limits 99Tc(IV) reoxidation in Fe(II)-treated 99Tc-goethite mineral and 3) evaluate whether there is a long-term 99Tcoxidation state change for Tc sequestered in the iron solids.

Um, Wooyong; Wang, Guohui; Jung, Hun Bok; Peterson, Reid A.

2013-11-18T23:59:59.000Z

3

Tc-99 Ion Exchange Resin Testing  

Science Conference Proceedings (OSTI)

Pacific Northwest National Laboratory was contracted by CHPRC to evaluate the release of 99Tc from spent resin used to treat water from well 299-W15-765 and stored for several years. The key questions to be answered are: 1) does 99Tc readily release from the spent ion exchange resin after being in storage for several years; 2) if hot water stripping is used to remove the co-contaminant carbon tetrachloride, will 99Tc that has been sequestered by the resin be released; and 3) can spent resin be encapsulated into a cementitious waste form; if so, how much 99Tc would be released from the weathering of the monolith waste form? The results from the long term stability leach test results confirm that the resin is not releasing a significant amount of the sequestered 99Tc, evident by the less than 0.02% of the total 99Tc loaded being identified in the solution. Furthermore, it is possible that the measured 99Tc concentration is the result of 99Tc contained in the pore spaces of the resin. In addition to these results, analyses conducted to examine the impact of hot water on the release of 99Tc suggest that only a small percentage of the total is being released. This suggest that hot water stripping to remove carbon tetrachloride will not have a significant affect on the resin’s ability to hold-on to sequestered 99Tc. Finally, encapsulation of spent resin in a cementitious material may be a viable disposal option, but additional tests are needed to examine the extent of physical degradation caused by moisture loss and the effect this degradation process can have on the release of 99Tc.

Valenta, Michelle M.; Parker, Kent E.; Pierce, Eric M.

2010-08-01T23:59:59.000Z

4

Tc-99m Labeled carrier for imaging  

DOE Patents (OSTI)

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.

Henze, Eberhard (Santa Monica, CA)

1984-01-01T23:59:59.000Z

5

Scintillating 99Tc Selective Ion Exchange Resins  

Science Conference Proceedings (OSTI)

Scintillating technetium (99Tc) selective ion exchange resins have been developed and evaluated for equilibrium capacities and detection efficiencies. These resins can be utilized for the in-situ concentration and detection of low levels of pertechnetate anions (99TcO4-) in natural waters. Three different polystyrene type resin support materials were impregnated with varying amounts of tricaprylmethylammonium chloride (Aliquat 336) extractant, several different scintillating fluors and wavelength shifters. The prepared resins were contacted batch-wise to equilibrium over a wide range of 99TcO4- concentrations in natural water. The measured capacities were used to develop Langmuir adsorption isotherms for each resin. 99Tc detection efficiencies were determined and up to 71.4 ± 2.6% was achieved with some resins. The results demonstrate that a low level detection limit for 99TcO4- in natural waters can be realized.

Mitchell Greenhalgh; Richard D. Tillotson

2012-07-01T23:59:59.000Z

6

AOCS Official Method Tc 1a-64  

Science Conference Proceedings (OSTI)

Nonvolatiles (Solids) Solutions of Drying Oils, Hot Plate Method AOCS Official Method Tc 1a-64 Methods Downloads Methods Downloads DEFINITION This method determines the nonvolatiles (solids) content under the spec

7

AOCS Official Method Tc 2a-64  

Science Conference Proceedings (OSTI)

Color, Photometric Index AOCS Official Method Tc 2a-64 Methods Downloads Methods Downloads DEFINITION This method measures the color of commercial fatty acids and expresses the color as percent transmission at 440

8

New high- Tc benchmarks for organic and fullerene superconductors  

SciTech Connect

Superconductivity in the highest-{Tc} radical-cation ({kappa}-(ET){sub 2}Cu(N(CN){sub 2})X, X=Br ({Tc}=11.6K), X=Cl ({Tc}=12.8 K, 0.3 kbar)) and radical-anion (K{sub x}C{sub 60}({Tc}=18.0 K), Rb{sub x}C{sub 60} ({Tc}=28.6 K)) organic superconductors is discussed. 21 refs., 5 figs.

Williams, J.M.; Wang, H.H.; Carlson, K.D.; Kini, A.M.; Geiser, U.; Schultz, A.J.; Kwok, W.K.; Welp, U.; Crabtree, G.W.; Fleshler, S. (Argonne National Lab., IL (United States)); Whangbo, M.H. (North Carolina State Univ., Raleigh, NC (United States). Dept. of Chemistry); Schirber, J.E. (Sandia National Labs., Albuquerque, NM (United States))

1991-01-01T23:59:59.000Z

9

ISO TC172/SC1 Optics and Photonics/Fundamental ...  

Science Conference Proceedings (OSTI)

International Organization for Standardization (ISO)/TC 172/SC 1 Optics and Photonics/Fundamental Standards. Purpose: ...

2013-05-18T23:59:59.000Z

10

ISO/TC 197 HYDROGEN TECHNOLOGIES  

NLE Websites -- All DOE Office Websites (Extended Search)

TC 197 TC 197 HYDROGEN TECHNOLOGIES HYDROGEN FUEL - PRODUCT SPECIFICATION ISO 14687 WORKING GROUP 3 Dr. Addison Bain - Convener HYDROGEN FUEL - PRODUCT SPECIFICATION PURPOSE The purpose of this ISO standard is to describe the quality characteristics of hydrogen fuel and to assure uniformity in the final quality of the hydrogen product as produced and distributed for utilization in vehicular, appliance, or other fueling applications ISO 14687 HISTORY August 1994 - Work Item Proposed December 1994 - Work Item Approved ISO P - members supporting the effort: Belgium Canada Egypt France Germany Italy Japan Korea Russia Switzerland Turkey USA ISO 14687 HISTORY (cont'd) USA Membership: NASA Wiltec Laboratories National Hydrogen Association American Hydrogen Association Air Products and Chemicals

11

Synthesis of trevorite to capture Tc  

SciTech Connect

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 800°C. 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.

Tsui, Colin

2011-09-02T23:59:59.000Z

12

Trexler Climate Energy Services TC ES | Open Energy Information  

Open Energy Info (EERE)

Trexler Climate Energy Services TC ES Trexler Climate Energy Services TC ES Jump to: navigation, search Name Trexler Climate + Energy Services (TC + ES) Place Portland, Oregon Zip 97214 Sector Services Product Trexler Climate + Energy Services was aquired by EcoSecurities in February 2007 and merged with their consulting division to form EcoSecurities Global Consulting Services. References Trexler Climate + Energy Services (TC + ES)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Trexler Climate + Energy Services (TC + ES) is a company located in Portland, Oregon . References ↑ "Trexler Climate + Energy Services (TC + ES)" Retrieved from "http://en.openei.org/w/index.php?title=Trexler_Climate_Energy_Services_TC_ES&oldid=352388

13

Shape coexistence and isomeric states in neutron-rich {sup 112}Tc and {sup 113}Tc  

SciTech Connect

Isomeric states in {sup 112}Tc and {sup 113}Tc, with half-lives of 150(17) ns and 500(100) ns, respectively, have been observed following the relativistic fission of {sup 238}U. The fission fragments have been separated in a fragment separator and identified by means of energy-loss and time-of-flight techniques. In both nuclei, the ground-state configuration is calculated to have an oblate shape and the isomerism is proposed to arise due to transitions from a triaxial excited state to a low-lying oblate state.

Bruce, A. M.; Lalkovski, S.; Denis Bacelar, A. M. [School of Computing, Engineering and Mathematics, University of Brighton, Brighton BN2 4GJ (United Kingdom); Gorska, M.; Bednarczyk, P.; Caceres, L.; Geissel, H.; Gerl, J.; Kojouharov, I.; Kurz, N.; Prokopowicz, W.; Schaffner, H.; Tashenov, S.; Wollersheim, H. J. [Gesellschaft fuer Schwerionenforschung mbH, Planckstrasse 1, D-64291 Darmstadt (Germany); Pietri, S. [Gesellschaft fuer Schwerionenforschung mbH, Planckstrasse 1, D-64291 Darmstadt (Germany); Department of Physics, University of Surrey, Guildford GU2 7XH (United Kingdom); Podolyak, Zs.; Walker, P. M.; Cullen, I. J.; Farrelly, G. F.; Garnsworthy, A. B. [Department of Physics, University of Surrey, Guildford GU2 7XH (United Kingdom)

2010-10-15T23:59:59.000Z

14

High Tc SQUID Circuits Suppress Intrinsic Magnetic Field Noise  

John Clarke and colleagues at Berkeley Lab have eliminated excess low frequency noise in high-transition temperature (Tc) superconducting quantum ...

15

Iron Oxide Waste Form for Stabilizing 99Tc  

SciTech Connect

Crystals of goethite were synthesized with reduced technetium [{sup 99}Tc(IV)] incorporated within the solid lattice. The presence of {sup 99}Tc(IV) as a substituting cation in the matrix and 'armoring' by an additional layer of precipitated goethite isolated the reduced {sup 99}Tc(IV) from oxidizing agents. These products were used to make monolithic pellets to quantify an effective diffusion coefficient for {sup 99}Tc from goethite waste form contacted with a synthetic Hanford IDF (integrated disposal facility) pore water solution (pH = 7.2, I = 0.05 M) at room temperature for up to 120 days in static reactors. XANES analysis of the goethite solids recovered post-run demonstrated that the {sup 99}Tc in the goethite crystals remains in the reduced {sup 99}Tc(IV) state. The slow release of pertechnetate concentration with time in the static experiments with the monolith followed a square root of time dependence, consistent with diffusion control for {sup 99}Tc release. An apparent diffusion coefficient of 6.15 x 10{sup -11} cm{sup 2}/s was calculated for the {sup 99}Tc-goethite pellet sample and the corresponding leaching index (LI) was 10.2. The results of this study indicate that technetium can be immobilized in a stable, low-cost Fe oxide matrix that is easy to fabricate and these findings can be useful in designing long-term solutions for nuclear waste disposal.

Um, Wooyong; Chang, Hyun-Shik; Icenhower, Jonathan P.; Lukens, Wayne W.; Serne, R. Jeffrey; Qafoku, Nikolla; Kukkadapu, Ravi K.; Westsik, Joseph H.

2012-06-09T23:59:59.000Z

16

Biogeochemical Coupling of Fe and Tc Speciation in Subsurface Sediments: Implications to Long-Term Tc Immobilization  

DOE Green Energy (OSTI)

The overall project has been investigating the reactivity of pertechnetate [Tc(VII)] with Fe(II) forms in model mineral and mineral-microbe systems, and with sediments from the Oak Ridge FRC and the Hanford site. Past project results with Hanford and Oak Ridge sediments have been published in Fredrickson et al., (2004) and Kukkadapu et al., (2006). This poster summarizes a series of model system experiments that investigates whether microbes or biogenic Fe(II) were more important in the reduction of Tc(VII) in an anoxic suspension of ferrihydrite, Shewanella oneidensis MR-1, Tc(VII), and electron donor. Ferrihydrite is used to represent a bioavailable Fe(III) oxide present in small amounts in Oak Ridge and Hanford sediments. In order to address this overall goal, Tc(VII) reduction rates and redox products were studied in less complex systems where individual abiotic and biotic reactions were isolated for rigorous characterization. The specific objectives of the individual experiments in the series were as follows: (1) Identify the rates and products of the reaction of Tc(VII) with aqueous Fe(II) at circumneutral pH values (homogeneous reduction). (2) Identify the rates and products of the reaction of Tc(VII) with surface complexed Fe(II) on goethite and hematite in the circumneutral pH range (heterogeneous reduction). (3) Identify the rates and products of the reaction of Tc(VII) with MR-1 under anoxic conditions individually with hydrogen and lactate as electron donors (biologic reduction). (4) Use insights from the above experiments to determine which of the three above, potentially parallel reactions determine the final speciation of Tc in a mixture of ferrihydrite, respiring MR-1, and Tc(VII).

Zachara, John M.; Kukkadapu, Ravi K.; Heald, Steve M.; McKinley, James P.; Dohnalkova, Alice C.; Fredrickson, James K.; Byong-Hun Jeon

2006-04-05T23:59:59.000Z

17

Power Systems Development Facility Gasification Test Run TC07  

SciTech Connect

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.

Southern Company Services

2002-04-05T23:59:59.000Z

18

Power Systems Development Facility Gasification Test Campaign TC25  

DOE Green Energy (OSTI)

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.

Southern Company Services

2008-12-01T23:59:59.000Z

19

Bridging the Gaps of High-Tc Superconductor  

NLE Websites -- All DOE Office Websites (Extended Search)

Bridging the Gaps of High-Tc Bridging the Gaps of High-Tc Superconductor Since the discovery of high-temperature superconductor by Bednorz and Müller in 1986, this field has become one of the most important research topics in solid state physics. In the past 20 years many unconventional properties have been discovered in this new class of materials. These have challenged our conventional wisdom and driven the development of many novel theories. Among these discoveries, the most mysterious is probably the pseudogap phenomena: it has been observed that there is an energy gap above the superconducting transition temperature (TC) that persists over a wide range of temperatures and chemical compositions [1]. This peculiar behavior appears to be very different from a conventional superconductor. Here the electrons form so-called "Cooper pairs", which manifests itself as an energy gap in many spectroscopic measurements. This energy gap, known as superconducting gap, appears only below TC where the electrical resistance also vanishes (hence the name 'superconductor'). This important difference has stimulated lots of debate in the search of understanding high-TC superconductivity on questions such as: "What is the pseudogap?" and "What is its relation to superconducting gap and superconductivity at high temperature?"

20

trans-K3[TcO2(CN)4  

SciTech Connect

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) Å 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 K···O and K···N interactions occur in the 2.7877 (19)-2.8598 (15) Å range.

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

2010-07-14T23:59:59.000Z

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

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

Science Conference Proceedings (OSTI)

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 µg/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 ºC, 27 ºC, and 32 ºC 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.

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

2010-12-01T23:59:59.000Z

22

Burning of high Tc bridges M. E. Gaevski,a)  

E-Print Network (OSTI)

Burning of high Tc bridges M. E. Gaevski,a) T. H. Johansen, Yu. Galperin,a) and H. Bratsberg February 1997; accepted for publication 24 September 1997 Burning of superconducting thin film bridges containing extended defects magneto-optic investigation is sufficient to locate the incipient burning region

Johansen, Tom Henning

23

Recap and Conclusions to Tc/I in Hanford Flowsheet Presentations  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

- Tc-99 concentration in secondary waste is predicted to be < 0.4% of ETF limit 3 Technetium Retention During LAW Vitrification * Single pass Tc retention in glass ranges...

24

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

3: Cisco TelePresence TC and TE Bugs Let Remote Users Deny Service and Remote Adjacent Authenticated Users Gain Root Shell Access V-183: Cisco TelePresence TC and TE Bugs Let...

25

Tests of a GM Cryocooler and high Tc leads for use on the ALS superbend magnets  

E-Print Network (OSTI)

TC LEADS FOR USE ON THE ALS SUPERBEND MAGNETS J. Zbasnik, M.TC LEADS FOR USE ON THE ALS SUPERBEND MAGNETS J. Zbasnikl,Geyer, and F. Ottens of the ALS Electrical Engineering group

Zbasnik, J.

2011-01-01T23:59:59.000Z

26

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

NLE Websites -- All DOE Office Websites (Extended Search)

Pseudogaps, Polarons, and the Pseudogaps, Polarons, and the Mystery of High-Tc Superconductivity Pseudogaps, Polarons, and the Mystery of High-Tc Superconductivity Print Wednesday, 26 April 2006 00:00 Working at the ALS, a multi-institutional collaboration led by researchers at ALS and Stanford University has identified a pseudogap phase with a nodal-antinodal dichotomy in ferromagnetic manganese oxide materials (manganites). Even though ferromagnetism and superconductivity do not exist together, the pseudogap state found in these manganites is remarkably similar to that found in high-temperature superconducting copper oxide materials (cuprates). This discovery casts new doubts on any direct link between the pseudogap phase and high-temperature superconductivity and adds fire to the debate over one of the great scientific mysteries of our time: What causes high-temperature superconductivity?

27

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

NLE Websites -- All DOE Office Websites (Extended Search)

Pseudogaps, Polarons, and the Mystery of High-Tc Superconductivity Print Pseudogaps, Polarons, and the Mystery of High-Tc Superconductivity Print Working at the ALS, a multi-institutional collaboration led by researchers at ALS and Stanford University has identified a pseudogap phase with a nodal-antinodal dichotomy in ferromagnetic manganese oxide materials (manganites). Even though ferromagnetism and superconductivity do not exist together, the pseudogap state found in these manganites is remarkably similar to that found in high-temperature superconducting copper oxide materials (cuprates). This discovery casts new doubts on any direct link between the pseudogap phase and high-temperature superconductivity and adds fire to the debate over one of the great scientific mysteries of our time: What causes high-temperature superconductivity?

28

Introduction to Tc/I in Hanford Flowsheet  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Introduction to Tc/I in Hanford Introduction to Tc/I in Hanford Flowsheet Gary Smith Office of Waste Processing (EM-31) November 18, 2010 2 Rough Flowsheet Diagram Tank Farm Evaporator Pretreatment Evaporator IDF ETF HLW LAW Vit Secondary SBS WESP Melter Supplemental ? Repository Secondary -Caustic Scrub (LAW Vit) -HEPA Filters -Carbon Beds -Silver Mordenite (HLW Vit) -Other operating wastes Recycle Options * Continuous recycle of the SBS/WESP bottoms from LAW vitrification are assumed in baseline - could consider purges and breaking of the recycle loop (e.g., off-gas scrub sent to secondary waste treatment, portions diverted to HLW vitrification facility, or supplemental LAW treatment) * WTP mass balance assumes no recycle from supplemental treatment - many estimates have been made on the impacts of scrub solution recycle if

29

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

NLE Websites -- All DOE Office Websites (Extended Search)

Pseudogaps, Polarons, and the Mystery of High-Tc Superconductivity Print Pseudogaps, Polarons, and the Mystery of High-Tc Superconductivity Print Working at the ALS, a multi-institutional collaboration led by researchers at ALS and Stanford University has identified a pseudogap phase with a nodal-antinodal dichotomy in ferromagnetic manganese oxide materials (manganites). Even though ferromagnetism and superconductivity do not exist together, the pseudogap state found in these manganites is remarkably similar to that found in high-temperature superconducting copper oxide materials (cuprates). This discovery casts new doubts on any direct link between the pseudogap phase and high-temperature superconductivity and adds fire to the debate over one of the great scientific mysteries of our time: What causes high-temperature superconductivity?

30

NMR/MRI with hyperpolarized gas and high Tc SQUID  

DOE Patents (OSTI)

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.

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

31

Power Systems Development Facility Gasification Test Campaign TC24  

DOE Green Energy (OSTI)

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 TC24, the first test campaign using a bituminous coal as the feedstock in the modified Transport Gasifier configuration. TC24 was conducted from February 16, 2008, through March 19, 2008. The PSDF gasification process operated for about 230 hours in air-blown gasification mode with about 225 tons of Utah bituminous coal feed. Operational challenges in gasifier operation were related to particle agglomeration, a large percentage of oversize coal particles, low overall gasifier solids collection efficiency, and refractory degradation in the gasifier solids collection unit. The carbon conversion and syngas heating values varied widely, with low values obtained during periods of low gasifier operating temperature. Despite the operating difficulties, several periods of steady state operation were achieved, which provided useful data for future testing. TC24 operation afforded the opportunity for testing of various types of technologies, including dry coal feeding with a developmental feeder, the Pressure Decoupled Advanced Coal (PDAC) feeder; evaluating a new hot gas filter element media configuration; and enhancing syngas cleanup with water-gas shift catalysts. During TC24, 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.

Southern Company Services

2008-03-30T23:59:59.000Z

32

Power Systems Development Facility Gasification Test Campaing TC18  

SciTech Connect

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.

Southern Company Services

2005-08-31T23:59:59.000Z

33

New routes for production of proton-rich Tc isotopes  

Science Conference Proceedings (OSTI)

Proton-rich Tc radionuclides have been identified as potential candidates for specific clinical and biological applications in the last decade. So far, these radionuclides have been produced either by proton-induced reaction on Mo targets or {alpha}-particle-induced reaction on Nb targets. This article lightens two heavy-ion-induced production routes of {sup 93,94,95,96}Tc radionuclides through {sup 7}Li+{sup nat}Zr and {sup 9}Be+{sup nat}Y reactions and provides important cross-sectional information in the projectile energy ranges 37-45 MeV and 30-48 MeV, respectively. Excitation functions of those reactions have been measured using the stacked-foil technique followed by the off-line {gamma}-spectrometric studies. Measured cross-sectional data have been interpreted comparing theoretical predictions of the two nuclear reaction model codes PACE-II and ALICE91. Experimental cross sections agreed with the theory. Measured production cross sections of {sup 94,95}Tc have been compared with those produced from the {alpha}+{sup 93}Nb reaction.

Maiti, Moumita; Lahiri, Susanta [Chemical Sciences Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata 700 064 (India)

2010-02-15T23:59:59.000Z

34

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

Science Conference Proceedings (OSTI)

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 (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).

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

35

Fate of Tc99 at WTP and Current Work on Capture  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Fate of Tc Fate of Tc 99 at WTP and Current Work on Capture DOE EM High-Level Waste Corporate Board and as seen at the DOE EM Construction Project Review November 2010 Bechtel National, Inc. Albert A. Kruger, DOE-WED Glass Scientist John Olson, BNI Manager, Process Engineering Design 2 Fate of Tc 99 During Waste Processing A.Technical Basis for planned retention of Tc 99 in LAW and HLW glass B.Overall process mass balance C.Role of recycle, secondary waste and other disposition pathways D.Distribution of Tc 99 amongst tanks and tank waste fractions 3 Overview WTP effluents meet all waste and emissions requirements † Of all Tc 99 sent to WTP ‡ , approximately: - 77% goes to Supplemental LAW (no recycle to WTP)  Treatment technology not specified - 23% goes to WTP effluents (HLW/LAW glass, secondary effluents). On

36

Power Systems Development Facility Gasification Test Campaign TC22  

SciTech Connect

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.

Southern Company Services

2008-11-01T23:59:59.000Z

37

Power Systems Development Facility Gasification Test Run TC11  

Science Conference Proceedings (OSTI)

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.

Southern Company Services

2003-04-30T23:59:59.000Z

38

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

E-Print Network (OSTI)

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.

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

2009-11-09T23:59:59.000Z

39

Recap and Conclusions to Tc/I in Hanford Flowsheet Presentations  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Recap & Conclusions to Tc/I in Recap & Conclusions to Tc/I in Hanford Flowsheet Presentations Gary Smith Office of Waste Processing (EM-31) November 18, 2010 2 Rough Flowsheet Diagram Tank Farm Evaporator Pretreatment Evaporator IDF ETF HLW LAW Vit Secondary SBS WESP Melter Supplemental ? Repository Secondary -Caustic Scrub (LAW Vit) -HEPA Filters -Carbon Beds -Silver Mordenite (HLW Vit) -Other operating wastes Fate of Tc-99 at WTP * WTP flowsheet Tc partitions: - approximately 77.1% to supplemental LAW treatment - approximately 20.2% to LAW glass - approximately 2.3% to HLW glass - approximately 0.4% to secondary wastes [assumes no recycle from supplemental LAW treatment] * Secondary Wastes: - Tc-99 concentration in secondary waste is predicted to be < 0.4% of ETF limit 3 Technetium Retention During LAW

40

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

3: Cisco TelePresence TC and TE Bugs Let Remote Users Deny 3: Cisco TelePresence TC and TE Bugs Let Remote Users Deny Service and Remote Adjacent Authenticated Users Gain Root Shell Access V-183: Cisco TelePresence TC and TE Bugs Let Remote Users Deny Service and Remote Adjacent Authenticated Users Gain Root Shell Access June 21, 2013 - 6:00am Addthis PROBLEM: Three vulnerabilities were reported in Cisco TelePresence TC and TE PLATFORM: The following product models are affected by the vulnerabilities: Cisco TelePresence MX Series Cisco TelePresence System EX Series Cisco TelePresence Integrator C Series Cisco TelePresence Profiles Series running Cisco TelePresence Quick Set Series Cisco IP Video Phone E20 ABSTRACT: Cisco TelePresence TC and TE Software contain two vulnerabilities in the implementation of the Session Initiation Protocol (SIP) that could allow an

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

INFLUENCE OF NATURAL AND SYNTHETIC ORGANIC LIGANDS ON THE STABILITY AND MOBILITY OF REDUCED TC(IV)  

SciTech Connect

The primary objectives were (1) to quantify the interactions of organic ligands with Tc(IV) through the generation of thermodynamic (complexation) and kinetic parameters needed to assess and predict the mobility of reduced Tc(IV) at DOE contaminated sites; and (2) to determine the impact of organic ligands on the mobility and fate of reduced Tc(IV) under field geochemical conditions.

Nathalie A. Wall; Baohua Gu

2012-12-20T23:59:59.000Z

42

Supine lung clearance of Tc-99m DTPA and HMPAO aerosols  

Science Conference Proceedings (OSTI)

The speed of Tc-99m DTPA/HMPAO radioaerosol clearance from the lungs that is represented as a slope from lungs to blood was measured in 23 male normal controls using commercial lung radioaerosol delivery units in the supine position in order to avoid the influences of gravity. The right lung was selected and three regions of interest were created for equal subdivisions of the upper, middle, and lower third. The results show that the clearance of Tc-99m DTPA/HMPAO aerosols in the upper lung is lowest. The difference between upper and lower lungs for Tc-99m DTPA/HMPAO aerosol clearances are significant. The clearance of Tc-99m DTPA aerosols was significantly faster than those of Tc-99m HMPAO in any region. The authors conclude that, although the effect of gravity disappears in the supine position in our study, the differences of aerosol clearance in different regions are still significant. Lipophilic Tc-99m HMPAO aerosols were slower than those of hydrophilic Tc-99m DTPA, which suggests there are at least two different mechanisms. 22 refs., 2 figs., 1 tab.

Chia-Hung Kao; Hui-Tzu Lin; Shu-Ling Yu [Taichung Veterans General Hospital (Taiwan, Province of China)] [and others

1995-07-01T23:59:59.000Z

43

Mo-99/Tc-99m Separation: An Assessment of Technical Options  

Science Conference Proceedings (OSTI)

Several strategies for the effective separation of 99mTc from 99Mo have been developed and validated. Due to the success of column chromatographic separation using acidic alumina coupled with high specific activity fission 99Mo (F 99Mo) for production of 99Mo/99mTc generators, however, most technologies until recently have generated little interest. The reduced availability of F 99Mo and consequently the shortage of 99Mo/99mTc column generators in the recent past have resurrected interest in the production of 99Mo as well as 99mTc by alternate routes. Most of these alternative production processes require separation techniques capable of providing clinical grade 99mTc from low specific activity 99Mo or irradiated Mo targets. For this reason there has been renewed interest in alternate separation routes. This paper reviews the reported separation technologies which include column chromatography, solvent extraction, sublimation and gel systems that have been traditionally used for the fabrication of 99Mo/99mTc generator systems. The comparative advantage, disadvantage, and technical challenges toward adapting the emerging requirements are discussed. New developments such as solid-phase column extraction, electrochemical separation, extraction chromatography, supported liquid membrane (SLM) and thermochromatographic techniques are also being evaluated for their potential application in the changed scenario of providing 99mTc from alternate routes. Based on the analysis provided in this review, it appears that some proven separation technologies can be quickly resurrected for the separation of clinical grade 99mTc from macroscopic levels of reactor or cyclotron irradiated molybdenum targets. Furthermore, emerging technologies can be developed further to respond to the expected changing modes of 99mTc production.

Dash, A [Bhabha Atomic Research Centre, Mumbai, India; Pillai, M R A [Bhabha Atomic Research Centre, Mumbai, India; Knapp Jr, Russ F [ORNL

2013-01-01T23:59:59.000Z

44

TC-1 (6/10/11) COLORADO SCHOOL OF MINES FACULTY HANDBOOK  

E-Print Network (OSTI)

TC-1 (6/10/11) COLORADO SCHOOL OF MINES FACULTY HANDBOOK TWELFTH EDITION TABLE OF CONTENTS TABLE ------------------------------------------------------------------------------------------------------------------------------- PART I: INTRODUCTORY MATERIAL PREFACE SECTION 1: FACULTY HANDBOOK ORGANIZATION-1 ------------------------------------------------------------------------------------------------------------------------------- PART II: EMPLOYMENT POLICIES AND PROCEDURES SECTION 3: HANDBOOK MODIFICATION PROCESS

45

The Impact of Future Climate Change on TC Intensity and Structure: A Downscaling Approach  

Science Conference Proceedings (OSTI)

A comprehensive analysis of tropical cyclone (TC) intensity change in a warming climate is undertaken with high-resolution (6- and 2-km grid spacing) idealized simulations using the Weather Research and Forecasting (WRF) model. With the goal of ...

Kevin A. Hill; Gary M. Lackmann

2011-09-01T23:59:59.000Z

46

High temperature magnetic ordering in the 4d perovskite SrTcO3  

SciTech Connect

We present evidence for possibly the highest magnetic ordering temperature in any compound without 3d transition elements. Neutron powder diffraction measurements, at both time-of-flight and constant wavelength sources, were performed on two independently prepared SrTcO{sub 3} powders. SrTcO{sub 3} adopts a distorted perovskite structure with G-type antiferromagnetic ordering and has a moment of 1.87(4){mu}{sub B} per Tc cation at room temperature with an extraordinarily high Neel point close to 750 C. Electronic structure calculations reveal extensive mixing between the technetium 4d states and oxygen states proximal to the Fermi level. This hybridization leads to a close relationship between magnetic ordering temperature and moment formation in SrTcO{sub 3}.

Rodriguez, Efrain E. [National Institute of Standards and Technology (NIST), Gaithersburg, MD; Poineau, Frederic [University of Nevada, Las Vegas; Llobet, Anna [Los Alamos National Laboratory (LANL); Kennedy, Brendan J. [University of Technology Sydney; Avdeev, Maxim [Bragg Institute, ANSTO; Thorogood, Gordon J. [Bragg Institute, ANSTO; Carter, Melody L. [ANSTO; Seshadri, Ram [University of California, Santa Barbara; Singh, David J [ORNL; Cheetham, Anthony K. [University of Cambridge

2011-01-01T23:59:59.000Z

47

Taking a quantum leap in time to solution for simulations of high-Tc superconductors  

Science Conference Proceedings (OSTI)

We present a new quantum cluster algorithm to simulate models of high-Tc superconductors. This algorithm extends current methods with continuous lattice self-energies, thereby removing artificial long-range correlations. This cures the fermionic sign ...

Peter Staar, Thomas A. Maier, Michael S. Summers, Gilles Fourestey, Raffaele Solca, Thomas C. Schulthess

2013-11-01T23:59:59.000Z

48

An Evaluation of the Impact of Horizontal Resolution on Tropical Cyclone Predictions using COAMPS-TC  

Science Conference Proceedings (OSTI)

A series of experiments have been conducted using the Coupled Ocean/Atmosphere Mesoscale Prediction System – Tropical Cyclone (COAMPS-TC) to assess the impact of horizontal resolution on hurricane intensity prediction for ten Atlantic storms from ...

Hao Jin; Melinda S. Peng; Yi Jin; James D. Doyle

49

Fate of Tc99 at WTP and Current Work on Capture  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1 Technetium DF (per Rhenium simulant) from VSL-04R4710-1, Melter DM-100 Tests (1) 6 A. Retention of Tc 99 in LAW and HLW Glass (cont.) Table 2 Technetium DF (per Rhenium...

50

A Study of Cirrus Ice Particle Size Distribution Using TC4 Observations  

Science Conference Proceedings (OSTI)

An analysis of two days of in situ observations of ice particle size spectra, in convectively generated cirrus, obtained during NASA’s Tropical Composition, Cloud, and Climate Coupling (TC4) mission is presented. The observed spectra are examined ...

Lin Tian; Gerald M. Heymsfield; Lihua Li; Andrew J. Heymsfield; Aaron Bansemer; Cynthia H. Twohy; Ramesh C. Srivastava

2010-01-01T23:59:59.000Z

51

Effect of autonomic nerve stimulants on the distribution of /sup 99m/Tc- pertechnetate  

SciTech Connect

This study was performed in anticipation of an improvement of radioisotopic examination with /sup 99m/Tc-pertechnetate and of changing organ accumulation of /sup 99m/Tc-pentechnetate with administration of autonomic nerve stimulants. Changes of organ accumulation of /sup 99m/Tc-pertechnetate were followed at 15, 30, 60, 120, 180, and 300 min after administration of autonomic nerve stimulants. Using rats, the accumulation of /sup 99m/Tc-pertechnetate in the thyroid gland, parotid gland, sudmandibular gland, brain, liver, spleen, kidney, and blood were determined. An organ of highest accumulation of /sup 99m/ Tc-pertechnetate was the thyroid gland. Continuously, in the liver, kidney, parotid gland, submandibular gland, spleen, and brain, the accumulation became low and the accumulation in the blood was relatively high. In control group, the all organ accumulation of /sup 99m/Tc-pertechnetate were highest at 30 min after injection into abdominal cavity and after 120 min gradually decreased. In the group administered noradrenalin (sympathetic nerve stimulant) at 15 min before injection of /sup 99m/Tc-pertechnetate, the accumulation of the thyroid gland, brain, liver, and kidney decreased early. In the group of administered noradrenalin at 15 min before sacrificing rat, the uptake of only the brain decreased early. In the group administered vagostigmin (parasympathetic nerve stimulant) at 15 min before injection of /sup 99m/Tc-pertechnetate, accumulation of the submandibular gland, parotid gland, and kidney decreased. In contrast with these, the accumulation in the liver rose. Also in the group administered vagostigmin at 15 min before sacrificing rat, a high accumulation in the liver was also revealed and kept for relative long period. (auth)

Nakamura, J.

1972-01-01T23:59:59.000Z

52

Comparative evaluation of $sup 123$I and /sup 99m/Tc for thyroid studies  

SciTech Connect

A comparative study of the metabolism of /sup 129/I and /sup 99m/Tc in the thyroid was made. Thirty-minute uptake curves were determined for 26 patients and comparison images were obtained at 30 minutes With /sup 99m/Tc and at 30 minutes and 24 hours with /sup 123/I. Both radionuclides can be used to advantage in assessing thyroid function and anatomy. The reasonable cost of /sup 123/I adds to its clinical value. (HLW)

Atkins, H.L.; Ansari, A.N.; Bradley-Moore, P.R.; Lambrecht, R.; Wolf, A.

1973-01-01T23:59:59.000Z

53

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2: VMware vFabric tc Server Lets Remote Users Login Using 2: VMware vFabric tc Server Lets Remote Users Login Using Obfuscated Passwords T-692: VMware vFabric tc Server Lets Remote Users Login Using Obfuscated Passwords August 12, 2011 - 3:47pm Addthis PROBLEM: A vulnerability was reported in VMware vFabric tc Server. A remote user can login using an obfuscated version of their password. PLATFORM: Version(s): vFabric tc Server 2.0.0.RELEASE to 2.0.5.SR01, 2.1.0.RELEASE to 2.1.1.SR01 ABSTRACT: VMware vFabric tc Server Lets Remote Users Login Using Obfuscated Passwords. reference LINKS: SecurityTracker Alert ID: 1025923 VMware VFabric Download CVE-2011-0527 IMPACT ASSESSMENT: Medium Discussion: If the system stores passwords used for JMX authentication in an obfuscated form, a remote user can use the password in obfuscated form (or in plain

54

Chemical Equilibration and Transport Properties of Hadronic Matter near $T_c$  

E-Print Network (OSTI)

We discuss how the inclusion of Hagedorn states near $T_c$ leads to short chemical equilibration times of proton anti-proton pairs, $K\\bar{K}$ pairs, and $\\Lambda\\bar{\\Lambda}$ pairs, which indicates that hadrons do not need to be "born" into chemical equilibrium in ultrarelativistic heavy ion collisions. We show that the hadron ratios computed within our model match the experimental results at RHIC very well. Furthermore, estimates for $\\eta/s$ near $T_c$ computed within our resonance gas model are comparable to the string theory viscosity bound $\\eta/s=1/4\\pi$. Our model provides a good description of the recent lattice results for the trace anomaly close to $T_c=196$ MeV.

J. Noronha-Hostler; J. Noronha; H. Ahmad; I. Shovkovy; C. Greiner

2009-07-28T23:59:59.000Z

55

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

SciTech Connect

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.

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

2011-02-01T23:59:59.000Z

56

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

E-Print Network (OSTI)

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

Franz, Marcel

57

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

DOE Patents (OSTI)

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.

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

1984-01-27T23:59:59.000Z

58

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

DOE Patents (OSTI)

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

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

1992-05-26T23:59:59.000Z

59

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

DOE Patents (OSTI)

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.

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

60

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

Science Conference Proceedings (OSTI)

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.

Lewis, L.A.

1998-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

DOE Challenge Home Case Study TC Legend, Seattle, WA, Custom Home  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

TC Legend TC Legend Homes Seattle, WA BUILDING TECHNOLOGIES OFFICE DOE Challenge Home builders are in the top 1% of builders in the country meeting the extraordinary levels of excellence and quality specifi ed by the U.S. Department of Energy. Every DOE Challenge Home starts with ENERGY STAR for Homes Version 3 for an energy-effi cient home built on a solid foundation of building science research. Then, even more advanced technologies are designed in for a home that goes above and beyond current code to give you the superior quality construction, HVAC, appliances, indoor air quality, safety, durability, comfort, and solar-ready components along with ultra-low or no utility bills. This provides homeowners with a quality home that will last for generations to come.

62

Dynamics of Chemical Equilibrium of Hadronic Matter Close to $T_c$  

E-Print Network (OSTI)

Quick chemical equilibration times of hadrons (specifically, $p\\bar{p}$, $K\\bar{K}$, $\\Lambda\\bar{\\Lambda}$, and $\\Omega\\bar{\\Omega}$ pairs) within a hadron gas are explained dynamically using Hagedorn states, which drive particles into equilibrium close to the critical temperature. Within this scheme, we use master equations and derive various analytical estimates for the chemical equilibration times. We compare our model to recent lattice results and find that for both $T_c=176$ MeV and $T_c=196$ MeV, the hadrons can reach chemical equilibrium almost immediately, well before the chemical freeze-out temperatures found in thermal fits for a hadron gas without Hagedorn states. Furthermore the ratios $p/\\pi$, $K/\\pi$, $\\Lambda/\\pi$, and $\\Omega / \\pi $ match experimental values well in our dynamical scenario.

J. Noronha-Hostler; M. Beitel; C. Greiner; I. Shovkovy

2009-09-16T23:59:59.000Z

63

Transfer of /sup 131/I and /sup 95m/Tc from pasture to goat milk  

SciTech Connect

Field measurements were made in 1983 on the transfer of /sup 131/I and /sup 95m/Tc from spray-contaminated pasture to goat's milk. The transfer of /sup 131/I to milk was similar to that used for mathematical models in US Nuclear Regulatory Commission Regulatory Guide 1.109, which was derived from stall-feeding experiments using capsulized doses. Compared to /sup 131/I, the /sup 95m/Tc transferred to milk was about 5600 times less. The lower transfer resulted from both immobilization of technetium on pasture prior to ingestion as well as reduced gastrointestinal absorption. The results show that the food chain transfer of technetium to milk is much less than that previously expected based on inferences made from metabolism studies. 6 references, 4 figures, 1 table.

Bondietti, E.A.; Garten, C.T. Jr.

1984-01-01T23:59:59.000Z

64

New high- Tc benchmarks for organic superconductors based on ET (electron-donor) and C sub 60 (electron-acceptor) molecules  

SciTech Connect

The highest {Tc}'s achieved in organic electron-donor-based systems occur in two isostructural ET salts, viz., {kappa}-((ET){sub 2}Cu)(N(CN){sub 2})X, X = Br ({Tc} = 11.6 K, ambient pressure), X = Cl ({Tc} = 12.8 K, 0.3 kbar) whereas for the electron-acceptor-based systems derived from C{sub 60} they occur in K{sub 3}C{sub 60} ({Tc} = 19 K), Rb{sub 3}C{sub 60} ({Tc} = 29 K), Rb{sub x}Cs{sub y}C{sub 60} ({Tc} 33 K) and Rb{sub x}Tl{sub y}C{sub 60} ({Tc} {approx} 45 K). Research performed at Argonne National Laboratory, and based on the ET and C{sub 60} systems, is reviewed.

Williams, J.M.; Geiser, U.; Carlson, K.D.; Wang, H.H.; Kini, A.M.; Schultz, A.J.; Kwok, W.K.; Welp, U.; Crabtree, G.W. (Argonne National Lab., IL (United States)); Whangbo, M.H. (North Carolina State Univ., Raleigh, NC (United States). Dept. of Chemistry); Schirber, J.E. (Sandia National Labs., Albuquerque, NM (United States))

1992-01-01T23:59:59.000Z

65

New high-{Tc} benchmarks for organic superconductors based on ET (electron-donor) and C{sub 60} (electron-acceptor) molecules  

SciTech Connect

The highest {Tc}`s achieved in organic electron-donor-based systems occur in two isostructural ET salts, viz., {kappa}-[(ET){sub 2}Cu][N(CN){sub 2}]X, X = Br ({Tc} = 11.6 K, ambient pressure), X = Cl ({Tc} = 12.8 K, 0.3 kbar) whereas for the electron-acceptor-based systems derived from C{sub 60} they occur in K{sub 3}C{sub 60} ({Tc} = 19 K), Rb{sub 3}C{sub 60} ({Tc} = 29 K), Rb{sub x}Cs{sub y}C{sub 60} ({Tc} 33 K) and Rb{sub x}Tl{sub y}C{sub 60} ({Tc} {approx} 45 K). Research performed at Argonne National Laboratory, and based on the ET and C{sub 60} systems, is reviewed.

Williams, J.M.; Geiser, U.; Carlson, K.D.; Wang, H.H.; Kini, A.M.; Schultz, A.J.; Kwok, W.K.; Welp, U.; Crabtree, G.W. [Argonne National Lab., IL (United States); Whangbo, M.H. [North Carolina State Univ., Raleigh, NC (United States). Dept. of Chemistry; Schirber, J.E. [Sandia National Labs., Albuquerque, NM (United States)

1992-03-01T23:59:59.000Z

66

Topology of SU(N) gauge theories at T=0 and T=Tc  

E-Print Network (OSTI)

We calculate the topological charge density of SU(N) lattice gauge fields for values of N up to N=8. Our T=0 topological susceptibility appears to approach a finite non-zero limit at N=infinity that is consistent with earlier extrapolations from smaller values of N. Near the deconfining temperature Tc we are able to investigate separately the confined and deconfined phases, since the transition is quite strongly first order. We find that the topological susceptibility of the confined phase is always very similar to that at T=0. By contrast, in the deconfined phase at larger N there are no topological fluctuations except for rare, isolated and small instantons. This shows that as N->infinity the large-T suppression of large instantons and the large-N suppression of small instantons overlap, even at T=Tc, so as to suppress all topological fluctuations in the deconfined phase. In the confined phase by contrast, the size distribution is much the same at all T, becoming more peaked as N grows, suggesting that D(rho) is proportional to a delta function at N=infinity, centered on rho close to 1/Tc.

Biagio Lucini; Michael Teper; Urs Wenger

2004-01-20T23:59:59.000Z

67

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

Science Conference Proceedings (OSTI)

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.

Shuang Liu

2012-10-24T23:59:59.000Z

68

New algorithm to enable 400+ TFlop/s sustained performance in simulations of disorder effects in high-Tc superconductors  

Science Conference Proceedings (OSTI)

Staggering computational and algorithmic advances in recent years now make possible systematic Quantum Monte Carlo (QMC) simulations of high temperature (high-Tc) superconductivity in a microscopic model, the two dimensional (2D) Hubbard model, with ...

G. Alvarez; M. S. Summers; D. E. Maxwell; M. Eisenbach; J. S. Meredith; J. M. Larkin; J. Levesque; T. A. Maier; P. R. C. Kent; E. F. D'Azevedo; T. C. Schulthess

2008-11-01T23:59:59.000Z

69

ATOMIC RESOLUTION d2I/dV2 -IMAGING OF LATTICE IMPACT ON SUPERCONDUCTIVITY IN HIGH-Tc SUPERCONDUCTORS .  

E-Print Network (OSTI)

??The role of electron-lattice interaction in pair formation in high-Tc superconductivity has been under debate for twenty years. One thing which strongly distinguishes copper-oxides is… (more)

Wang, Miao

2008-01-01T23:59:59.000Z

70

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

Science Conference Proceedings (OSTI)

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.

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

71

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

DOE Patents (OSTI)

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.

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

1998-09-01T23:59:59.000Z

72

Effect of Dietary Intake of Stable Iodine on Dose-per-unit-intake Factors for 99Tc  

SciTech Connect

It is well-known that the human thyroid concentrates iodine more than 100 times the concentration in plasma. Also well-known is the fact that large amounts of stable iodine in the diet can limit thyroid uptake of total iodine; this is the basis for administering potassium iodide following a release of radioiodine from a nuclear reactor accident or nuclear weapon detonation. Many researchers have shown enhanced concentrations of both organic and inorganic iodine in saliva and breast milk. Technetium-99 is a long-lived (231,000 year half-life) radionuclide of concern in the management of high-level radioactive waste. There is no doubt that 99Tc, if it is in groundwater, will be found in the chemical form of pertechnetate, 99TcO4?. Pertechnetate is a large anion, almost identical in size to iodide, I?. The nuclear medicine literature shows that pertechnetate concentrates in the thyroid, salivary glands, and lactating breast in addition to the stomach, liver, and alimentary tract as currently recognized by the International Commission on Radiological Protection (ICRP). The fact that large intakes of stable iodine (127I) in the diet limit uptake of iodine by the thyroid leads one to generalize that stable iodine in the diet may also limit thyroid uptake of pertechnetate. While there is at least one report that iodine in the diet blocks uptake of 99mTcO4? by the thyroid and salivary glands (which have the same Na/I symporter, the biochemical concentration mechanism), the level of protective effect seen for blocking radioactive iodine is not expected for 99TcO4? because pertechnetate does not become organically bound in the thyroid and thus is not retained for months the way iodide is. While it does account for Tc concentration in the thyroid, the existing ICRP biokinetic model for technetium does not take enhanced concentrations in salivary gland and breast tissue into account. From the survey of the nuclear medicine literature, it is not possible to compute the effect of stable iodine in the diet on the dose per unit intake factors for 99Tc without developing an improved biokinetic model for technetium. Specific experiments should be designed to quantitatively evaluate 99TcO4? metabolism, excretion, and secretion, as well as to evaluate its chemical toxicity It is recommended that the ICRP reexamine its biokinetics models for Tc based on nuclear medicine data that have accumulated over the years. In particular, the ICRP ignores the lactation pathway, the enhanced concentration of Tc in breast and breast milk, and enhanced concentration of Tc (and I) in the salivary glands as well as in the thyroid. The ICRP should also explicitly incorporate the effect of stable iodine in the diet into both its models for iodine and technetium. The effect of concentration of Tc in breast milk needs further study for dosimetric implications to nursing infants whose mothers may ingest 99TcO4? from groundwater sources. The ICRP should also investigate the possibility of enhanced concentration of both I and Tc in the non-lactating female breast. To do these re-evaluations of biokinetic models, new experiments designed specifically to evaluate these questions concerning the biokinetics of Tc and I are needed.

Strom, Daniel J.

2003-09-30T23:59:59.000Z

73

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

Science Conference Proceedings (OSTI)

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.

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

74

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

E-Print Network (OSTI)

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.

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

2005-09-18T23:59:59.000Z

75

Soy-Based, Water-Cooled, TC W-III Two Cycle Engine Oil  

DOE Green Energy (OSTI)

The objective of this project was to achieve technical approval and commercial launch for a biodegradable soy oil-based, environmentally safe, TC W-III performance, water-cooled, two cycle engine oil. To do so would: (1) develop a new use for RBD soybean oil; (2) increase soybean utilization in North America in the range of 500 K-3.0 MM bushels; and (3) open up supply opportunities of 1.5-5.0 MM bushels worldwide. These goals have been successfully obtained.

Scharf, Curtis R.; Miller, Mark E.

2003-08-30T23:59:59.000Z

76

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

SciTech Connect

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.

Buck, Edgar C.; Neiner, Doinita

2010-09-30T23:59:59.000Z

77

Automated {sup 99}Tc analysis in AW-101 and AN-107 ``diluted feed'' matrixes  

Science Conference Proceedings (OSTI)

A process monitor is needed by British Nuclear Fuels Limited, Inc. (BNFL Inc.) to measure total {sup 99}Tc levels in column effluents during technetium removal from the aqueous fraction of the Hanford high-level tank wastes. The monitor must achieve detection limits of 1 x 10{sup {minus}8}Ci/mL (0.6 {micro}g/mL). Measurements must be done in near real time, with an analysis frequency of {approximately}15 min. The monitoring technology must be sufficiently simple and robust for unattended continuous operation in the plant settings.

OB Egorov; DE Kurath

2000-03-29T23:59:59.000Z

78

Producing radiometals in liquid targets: Proof of feasibility with {sup 94m}Tc  

Science Conference Proceedings (OSTI)

{sup 94m}Tc was produced in a liquid target loaded with a molybdenum-salt solution. This novel technique allows for the irradiation of metals dissolved in a liquid solution, normally only available in metal powder or foil form. By using this approach, the existing liquid targets and transfer infrastructure of many PET cyclotrons can be used to produce radiometals, avoiding the need, expense and challenges of operating solid targets. Such an approach allows for rapid testing of new isotopes for proof of feasibility studies. Different concentrations of Mo solution and their effect on the target performance were tested. Sufficient quantities to allow for preclinical studies were produced.

Hoehr, C.; Badesso, B.; Morley, T.; Trinczek, M.; Buckley, K.; Klug, J.; Zeisler, S.; Hanemaayer, V.; Ruth, T. R.; Benard, F.; Schaffer, P. [TRIUMF, 4004 Wesbrook Mall, V6T 2A3 Vancouver, BC (Canada); TRIUMF, 4004 Wesbrook Mall, V6T 2A3 Vancouver, BC (Canada) and BC Cancer Agency, 600 West 10th Avenue, V5Z 4E6 Vancouver, BC (Canada); TRIUMF, 4004 Wesbrook Mall, V6T 2A3 Vancouver, BC (Canada); TRIUMF, 4004 Wesbrook Mall, V6T 2A3 Vancouver, BC (Canada) and BC Cancer Agency, 600 West 10th Avenue, V5Z 4E6 Vancouver, BC (Canada); BC Cancer Agency, 600 West 10th Avenue, V5Z 4E6 Vancouver, BC (Canada); TRIUMF, 4004 Wesbrook Mall, V6T 2A3 Vancouver, BC (Canada)

2012-12-19T23:59:59.000Z

79

Response of the mouse fetus to radiation from Na/sup 99m/TcO$sub 4$  

SciTech Connect

The element technetium has recently assumed ecological importance as a source of low-level radiation, with the use of /sup 99m/Tc in nuclear medicine and production of /sup 99m/Tc during generation of electricity by nuclear reaction. When technetium is introduced as pertechnetate into the blood stream of pregnant females, it is transported across the placental barrier to the fetus, where a portion appears to be incorporated into biomolecules. When combined as biomolecules, radionuclides that decay by electron capture or isomeric transition show a lethality greater than that predicted in cell cultures and radiation therapy. The decay of /sup 99m/Tc by isomeric transition, together with the other considerations, places a high priority on the investigation of its radiation effects due to clinical doses of up to 25 mCi. Female mice were given daily i.v. injections of 0, 5, 50, and 500 $mu$ Ci of /sup 99m/Tc as pertechnetate in isotonic saline throughout gestation, gestation and lactation, or lactation. At two months of age, the progeny were mated with randomly selected litter mates to produce a second generation; the process was repeated with their progeny for production of the third generation.Preliminary results reinforce the existing concern about use of /sup 99m/Tc-pertechnetate in pregnant or potentially pregnant subjects. (auth)

Lathrop, K.A.; Gloria, I.V.; Harper, P.V.

1975-01-01T23:59:59.000Z

80

Brain scanning with 201 Thallium. Comparative study with D. T. P. A. sup(99m)Tc brain radioangiogram  

SciTech Connect

Data of brain scans with /sup 201/Th and sup(99m)Tc - D.T.P.A. are studied in 43 patients. Some of the results sustained earlier data form Ancri (1978): lack of interest through vascular diseases, good sensitivity for the focalized brain lesions (24/25). But new features are underlined: occurrence of false-positive, intermediary patterns laying between normal scan and focal pathologic distributions but without etiologic correspondance. The quantified contrast is usually better with sup(99m)Tc - D.T.P.A. than with /sup 201/Th: these data challenge Ancri's ones. Actual indications of Thallium brain scan are discussed.

Steinling, M.; Marchandise, X.; Destee, A.; Coequyt, S.; Warot, P.; Vergnes, R. (C.H.U. Lille (France))

1982-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
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81

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

E-Print Network (OSTI)

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.

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

2003-09-25T23:59:59.000Z

82

On the Possibility of New High Tc Superconductors by Producing metal Heterostructures as in the Cuprate Perovskites  

E-Print Network (OSTI)

Here we propose a possible way to produce superconductors with high critical temperature Tc by confinement of a Fermi liquid in a superlattice of quantum stripes (wells, wires or dots). The enhancement of Tc is obtained by tuning the size L of the stripes (wells, wires or dots), and the wavelength of electrons at the Fermi level {\\lambda}F at the resonance condition L {\\lambda}F. The 3D superconducting phase is stabilized by the condition that the separation W between the stripes (wells, wires or dots) should be of the order of the coherence length {\\xi}0. This quantum state is realized in Bi2Sr2Ca2Cu2O8+y superconductor with Tc= 84K, where the resonance condition kFy~2{\\pi}/L for the component of the Fermi wavevector normal to the stripe direction holds. This work gives the parameters for the design of new superconducting materials with higher Tc made of metal heterostructures approaching the atomic limit.

Antonio Bianconi

2011-07-16T23:59:59.000Z

83

Quantification of tc-99m sestamibi distribution in normal breast tissue using dedicated breast SPECT-CT  

Science Conference Proceedings (OSTI)

The use of Tc-99m-Sestamibi in molecular breast imaging is common due to its preferential uptake in malignant tissue. However, quantification of the baseline uptake in normal, healthy breast tissue is not possible using planar-imaging devices. Using ... Keywords: CT, SPECT, breast cancer, breast imaging, quantification, sestamibi

Steve D. Mann; Kristy L. Perez; Emily K. E. McCracken; Jainil P. Shah; Kingshuk R. Choudhury; Terence Z. Wong; Martin P. Tornai

2012-07-01T23:59:59.000Z

84

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

DOE Patents (OSTI)

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

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

1988-07-05T23:59:59.000Z

85

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

DOE Patents (OSTI)

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.

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

86

Photoreduction of {sup 99}Tc Pertechnetate by Nanometer-Sized Metal Oxides: New Strategies for Formation and Sequestration of Low-Valent Technetium  

Science Conference Proceedings (OSTI)

Technetium-99 ({sup 99}Tc) ({beta}{sup -}{sub max}: 293.7 keV; t{sub 1/2}: 2.1 x 10{sup 5} years) is a byproduct of uranium-235 fission and comprises a large component of radioactive waste. Under aerobic conditions and in a neutral- basic environment, the pertechnetate anion (TcO{sub 4}{sup -}) is stable. TcO{sub 4}{sup -} is very soluble, migrates easily through the environment and does not sorb well onto mineral surfaces, soils or sediments. This study moves forward a new strategy for the reduction of TcO4- and chemical incorporation of the reduced Tc into a metal oxide material. This strategy employs a single material, a polyoxometalate (POM), {alpha}{sub 2}-[P{sub 2}W{sub 17}O{sub 61}]{sup 10-}, that can be photoactivated in the presence of 2-propanol to transfer electrons to TcO{sub 4}{sup -}, and incorporate the reduced Tc covalently into the {alpha}2- framework to form the Tc{sup V}O species, Tc{sup V}O({alpha}{sub 2}-P{sub 2}W{sub 17}O{sub 61}){sup 7-}. This occurs via the formation of an intermediate species that slowly converts to Tc{sup V}O({alpha}{sub 2}-P{sub 2}W{sub 17}O{sub 61}){sup 7-}. EXAFS and XANES analysis and preliminary EPR analysis, suggests that the intermediate consists of a Tc(IV) {alpha}2- species where the Tc is likely bound to only 2 of the 4 W-O oxygen atoms in the {alpha}{sub 2}-[P{sub 2}W{sub 17}O{sub 61}]{sup 10-} defect. This intermediate then oxidizes and converts to the Tc{sup V}O({alpha}{sub 2}-P{sub 2}W{sub 17}O{sub 61}){sup 7-} product. The reduction and incorporation of TcO{sub 4}{sup -} was accomplished in a "one pot" reaction using both sunlight and UV irradiation, and monitored as a function of time using multinuclear NMR and radio TLC. The process was further probed by the "step-wise" generation of reduced {alpha}{sub 2}-P{sub 2}W{sub 17}O{sub 61}{sup 12-} through bulk electrolysis followed by the addition of TcO{sub 4}{sup -}. The reduction and incorporation of ReO{sub 4}{sup -}, as a non-radioactive surrogate for {sup 99}Tc, does not proceed through the intermediate species, and Re{sup V}O is incorporated quickly into the {alpha}{sub 2}-[P{sub 2}W{sub 17}O{sub 61}]{sup 10-} defect. These observations are consistent with the periodic trends of Tc and Re. Specifically, Tc is more easily reduced compared to Re. In addition to serving as models for metal oxides, POMs may also provide a suitable platform to study the molecular level dynamics and mechanisms of the reduction and incorporation of Tc into a material.

Burton-Pye, Benjamin P.; Radivojevic, Ivana; McGregor, Donna; Mbomekalle, Israel M.; Lukens, Jr., Wayne W.; Francesconi, Lynn C.

2011-07-04T23:59:59.000Z

87

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

DOE Patents (OSTI)

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.

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

1998-09-01T23:59:59.000Z

88

On Possibility of Using High-Tc Ceramic-Superconductor as Junction-less Transistor towards Nano-miniaturization  

E-Print Network (OSTI)

High-Tc Type-II ceramic-superconductor at temperature T nano-level) than the semi-conductor devices which has a limitation due to diffusion-layer-overlapping. A similar superconductor-device named Cryotron was invented at MIT half-a-century ago, but could not survive against semiconductor. CST is a rebirth of cryotron in different disguise & in new perspective.

R. C. Gupta; Ruchi Gupta; Sanjay Gupta

2005-07-05T23:59:59.000Z

89

Scintigraphic detection of occult hemorrhage using RBCs labeled in vitro with technetium Tc 99m sodium pertechnetate  

SciTech Connect

Scintigraphy with RBCs labeled with technetium Tc 99m sodium pertechnetate effectively located the source of hemorrhage in a patient receiving long-term anticoagulant therapy. (The patient was initially seen with a large hematoma on the flank.) More important, the procedure was used to monitor activity in this otherwise-occult bleeding site. Scintigraphic studies may be useful in the management of these difficult clinical problems.

Bunker, S.R.; Kolina, J.S.; Kaplan, K.A.; McAuley, R.J.; Lull, R.J.

1983-05-01T23:59:59.000Z

90

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

Science Conference Proceedings (OSTI)

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 Mössbauer 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 (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). Mössbauer 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 TcO2·nH2O-like phase. The speciation of redox product Tc(IV) was not affected by reduction rate or Fe(II) mineralogy.

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

91

High-Tc Superconducting Thin- and Thick-Film-Based Coated Conductors for Energy Applications  

Science Conference Proceedings (OSTI)

Although the first epitaxial films of YBCO with high Tc were grown nearly 20 years ago, the understanding and control of the nanostructures responsible for the dissipation-free electrical current transport in high temperature superconductors (HTS) is quite recent. In the last six to seven years, major advances have occurred in the fundamental investigation of low angle grain boundaries, flux-pinning phenomena, growth mode, and atomic-level defect structures of HTS epitaxial films. As a consequence, it has been possible to map and even engineer to some extent the performance of HTS coatings in large regions of the operating H, T, J phase space. With such progress, the future of high temperature superconducting wires looks increasingly promising despite the tremendous challenges offered by these brittle and anisotropic materials. Nevertheless, further performance improvements are necessary for the superconducting technology to become cost-competitive against copper wires and ultimately succeed in revolutionizing the transmission of electricity. This can be achieved by further diminishing the gap between theoretical and experimental values of the critical current density Jc, and/or increasing the thickness of the superconductive layer as much as possible without degrading performance. In addition, further progress in controlling extrinsic and/or intrinsic nano-sized defects within the films is necessary to significantly reduce the anisotropic response of HTS and obtain a nearly constant dependence of the critical current on the magnetic field orientation, which is considered crucial for power applications. This chapter is a review of the challenges still present in the area of superconducting film processing for HTS wires and the approaches currently employed to address them.

Cantoni, Claudia [ORNL; Goyal, Amit [ORNL

2010-01-01T23:59:59.000Z

92

Development of more efficacious Tc-99m organ imaging agents for use in nuclear medicine by analytical characterization of radiopharmaceutical mixtures. Progress report, May 1, 1981-April 30, 1982  

SciTech Connect

The objectives of this year's research were to develop a method for rapidly determining TcO/sub 4//sup -/ in /sup 99/Mo//sup 99m/Tc generator eluates, to improve the ability to chromatographically determine individual Tc-HEDP complexes in radiopharmaceuticals, and to investigate the effects of TcO/sub 4//sup -/ concentration and electrochemical reduction on the types and relative amounts of Tc-HEDP complexes present in a radiopharmaceutical formulation. A rapid and sensitive high performance liquid chromatographic (HPLC) method for the quantitative determination of pertechnetate (TcO/sub 4//sup -/) was developed. This HPLC-based analysis may be of considerable utility in assessing the history and function of /sup 99/MO/sup 99m/Tc generators as well as in the routine analysis of reduced technetium radiopharmaceuticals for the presence of undesired TcO/sub 4//sup -/. Encouraging results were obtained on a dimethyl amine column using aqueous (NH/sub 4/)/sub 2/SO/sub 4/ as the mobile phase. The preparation of Tc(NaBH/sub 4/) HEDP radiopharmaceutical analogues using varying concentrations of total TcO/sub 4//sup -/ shows a dramatic effect in the number and distribution of Tc-HEDP complexes over a TcO/sub 4//sup -/ concentration range of 10/sup -2/ to 10/sup -8/M. These results suggest that total TcO/sub 4//sup -/ concentration is an important parameter to be considered in the preparation of a specific Tc-HEDP complex to improve skeletal imaging. The preparation of Tc(electrode) HEDP radiopharmaceutical analogues by using electrochemical reduction was explored. The resulting solutions contain Tc-HEDP complexes that are tentatively identified as being the same complexes formed by NaBH/sub 4/ reduction, although the relative concentrations of these complexes are quite different with the two modes of reduction. Thus, electrochemical reduction shows promise as a viable route to the preparation of specific Tc-HEDP complexes for improved skeletal imaging.

Heineman, W.R.; Deutsch, E.A.

1981-12-01T23:59:59.000Z

93

Research Article Evaluation of Nasal Mucociliary Transport Rate by 99m Tc-Macroaggregated Albumin Rhinoscintigraphy in  

E-Print Network (OSTI)

Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Woodworkers in the furniture industry are exposed to wood dust in their workplaces. The aim of this study is to investigate the effect of occupational wood dust exposure on the nasal mucociliary transport rates (NMTRs) in woodworkers. Twenty five woodworkers and 30 healthy controls were included in this study. Wood dust concentration in workplaces was measured using the sampling device. 99m Tc-macroaggregated albumin ( 99m Tc-MAA) rhinoscintigraphy was performed, and NMTR was calculated in all cases. In statistical analysis, an independent samples t-test was used to compare NMTR of woodworkers and control subjects. We found that the mean NMTR of the woodworkers was lower than that of the healthy controls. However, there was not a statistically significant difference between them (P = 0.066). In conclusion, our findings suggested that wood dust exposure may not impair nasal mucociliary transport rate in woodworkers employed in joinery workshops. 1.

Zeki Dostbil; Cahit Polat; Ismail Önder Uysal; Salih Bak?r; Askeri Karakus

2011-01-01T23:59:59.000Z

94

Indoor test for thermal performance of the G. E. TC-100 liquid solar collector eight- and ten-tube configuration  

DOE Green Energy (OSTI)

The test procedure used and the results obtained from an evaluation test program conducted to obtain thermal performance data on G.E. TC-100 liquid solar collectors, eight- and ten-tube configuration, under simulated conditions are described. These tests were made using the Marshall Space Flight Center's solar simulator. A time constant test and incident angle modifier test were also conducted to determine the transient effect and the incident angle effect on the collector. Performance loss with accessory covers is demonstrated. The G.E. TC-100 evacuated tube solar collector is a water/Prestone/working fluid type with and without manufacturer's accessory manifold. The gross collector area is about 17.4 ft/sup 2/ without manifold and 19.1 ft/sup 2/ with manifold. The eight-tube (S.N. 19965S) uses Alglas reflector material and the ten-tube (Dwg. 298E44261, S.N. 2) uses Coilzac reflector material. The collector weight is approximately 60 pounds empty and 75 pounds with manifold.

Not Available

1979-09-01T23:59:59.000Z

95

Flux tube widening in compact U (1) lattice gauge theory computed at T < Tc with the multilevel method and GPUs  

E-Print Network (OSTI)

We utilize Polyakov loop correlations to study d=3+1 compact U (1) flux tubes and the static electron-positron potential in lattice gauge theory. With the plaquette field operator, in U(1) lattice gauge theory, we probe directly the components of the electric and magnetic fields. In order to improve the signal-to-noise ratio in the confinement phase, we apply the L\\"uscher-Weiss multilevel algorithm. Our code is written in CUDA, and we run it in NVIDIA FERMI generation GPUs, in order to achieve the necessary efficiency for our computations. We measure in detail the quantum widening of the flux tube, as a function of the intercharge distance and at different finite temperatures T < Tc . Our results are compatible with the Effective String Theory.

A. Amado; N. Cardoso; P. Bicudo

2013-09-16T23:59:59.000Z

96

Flux tube widening in compact U (1) lattice gauge theory computed at T < Tc with the multilevel method and GPUs  

E-Print Network (OSTI)

We utilize Polyakov loop correlations to study d=3+1 compact U (1) flux tubes and the static electron-positron potential in lattice gauge theory. With the plaquette field operator, in U(1) lattice gauge theory, we probe directly the components of the electric and magnetic fields. In order to improve the signal-to-noise ratio in the confinement phase, we apply the L\\"uscher-Weiss multilevel algorithm. Our code is written in CUDA, and we run it in NVIDIA FERMI generation GPUs, in order to achieve the necessary efficiency for our computations. We measure in detail the quantum widening of the flux tube, as a function of the intercharge distance and at different finite temperatures T < Tc . Our results are compatible with the Effective String Theory.

Amado, A; Bicudo, P

2013-01-01T23:59:59.000Z

97

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

E-Print Network (OSTI)

> > 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

Plotkin, Joshua B.

98

sup 13 C double bond sup 13 C isotope effect for Tc and consequence regarding the superconducting pairing mechanism in. kappa. -(ET) sub 2 X superconductors  

Science Conference Proceedings (OSTI)

In this communication, the authors report the first determination of the isotope effect for {sup 13}C substitution in the central C {double bond} C atoms of ET (ET is bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF)) in the organic superconductors {kappa}-(ET){sub 2}Cu(N(CN){sub 2})Br ({Tc} = 11.6 {plus minus} 0.05 K, diamagnetic onset) and {kappa}-(ET){sub 2}Cu(NCS){sub 2} ({Tc} = 9.8 {plus minus} 0.3 K, diamagnetic onset). These materials, presently the highest-{Tc} electron-donor-based, ambient-pressure organic superconductors, are much better materials for tests of the isotope effect for ET-based superconductors than pressurized {beta}-(ET){sub 2}I{sub 3} because {Tc} is easily reproducible from sample-to-sample at ambient pressure. These results show that the central C {double bond} C stretching motion is not a dominant exchange mechanism over conventional BCS-type phonon exchange for superconducting pairing in {kappa}-(ET){sub 2}Cu(Nu(CN){sub 2})Br and {kappa}-(ET){sub 2}Cu(NCS){sub 2}.

Carlson, K.D.; Kini, A.M.; Klemm, R.A.; Wang, H.H.; Williams, J.M.; Geiser, U.; Kumar, S.K.; Ferraro, J.R.; Lykke, K.R.; Wurz, P.; Fleshler, S.; Dudek, J.D.; Eastman, N.L.; Mobley, P.R.; Seaman, J.M.; Sutin, J.D.B.; Yaconi, G.A. (Argonne National Lab., IL (United States)); Parker, D.H. (Univ. of California, Irvine (United States) Argonne National Lab., IL (United States)); Stout, P. (Bio-Rad, Cambridge, MA (United States))

1992-08-05T23:59:59.000Z

99

Extraction of actinide (III, IV, V, VI) ions and TcO4- byN,N,N',N'- tetraisobutyl-3-oxa-glutaramide  

SciTech Connect

The extraction behavior of U(VI), Np(V), Pu(IV), Am(III), and TcO{sub 4}{sup -} with N, N, N', N'-tetraisobutyl-3-oxa-glutaramide (TiBOGA) were investigated. An organic phase of 0.2 mol/L TiBOGA in 40/60% (V/V) 1-octanol/kerosene showed good extractability for actinides (III, IV, V VI) and TcO{sub 4}{sup -}from aqueous solutions of HNO{sub 3} (0.1 to 4 mol/L). At 25 C, the distribution ratio of the actinide ions (D{sub An}) generally increased as the concentration of HNO{sub 3} in the aqueous phase was increased from 0.1 to 4 mol/L, while the D{sub Tc} at first increased, then decreased, with a maximum of 3.0 at 2 mol/L HNO{sub 3}. Based on the slope analysis of the dependence of D{sub M} (M = An or Tc) on the concentrations of reagents, the formula of extracted complexes were assumed to be UO{sub 2}L{sub 2}(NO{sub 3}){sub 2}, NpO{sub 2}L{sub 2}(NO{sub 3}), PuL(NO{sub 3}){sub 4}, AmL{sub 3}(NO{sub 3}){sub 3}, and HL{sub 2}(TcO{sub 4}) where L = TiBOGA. The enthalpy and entropy of the corresponding extraction reactions, {Delta}{sub r}H and {Delta}{sub r}S, were calculated from the dependence of D on temperature in the range of 15-55 C. For U(VI), Np(V), Am(III) and TcO{sub 4}{sup -}, the extraction reactions are enthalpy driven and disfavored by entropy ({Delta}{sub r}H < 0 and {Delta}{sub r}S < 0). In contrast, the extraction reaction of Pu(IV) is entropy driven and disfavored by enthalpy ({Delta}{sub r}H > 0 and {Delta}{sub r}S > 0). A test run with 0.2 mol/L TiBOGA in 40/60% 1-octanol/kerosene was performed to separate actinides and TcO{sub 4}{sup -} from a simulated acidic high-level liquid waste (HLLW), using tracer amounts of {sup 238}U(VI), {sup 237}Np(V), {sup 239}Pu(VI), {sup 241}Am(III) and {sup 99}TcO{sub 4}{sup -}. The distribution ratios of U(VI), Np(V), Pu(VI), Am(III) and TcO{sub 4}{sup -} were 12.4, 3.9, 87, > 1000 and 1.5, respectively, confirming that TiBOGA is a promising extractant for the separation of all actinides and TcO{sub 4}{sup -} from acidic HLLW. It is noteworthy that the extractability of TiBOGA for Np(V) from acidic HLLW (D{sub Np(V)} = 3.9) is much higher than that of many other extractants that have been studies for the separation of actinides from HLLW.

Tian, Guoxin; Zhang, Ping; Wang, Jianchen; Rao, Linfeng

2005-05-01T23:59:59.000Z

100

LaL2SrL8Mn207BelowTc : Exchange StricthR ECEI VED  

NLE Websites -- All DOE Office Websites (Extended Search)

088-00-105 088-00-105 58916-00-105 9714E3 co C--q 03/64 - 1 Sign Reversal of the MN-0 bond Compressibility r in LaL2SrL8Mn207BelowTc : Exchange StricthR ECEI VED in the Ferromagnetic State JUL Q 7 1997 O S T I D. N. Argyriout§ J. F. Mitchell, J. B. Goodenough * , 0. Chmaissemt S. Short, and J. D. Jorgensen t Science and Technology Center for Superconductivity and Materials Science Division Argonne National Laboratory Argonne, IL 60439 * Center for Materials Science and Engineering, ECT 9.102 University of Texas at Austin Austin, TX 78712-1063 the submitted manuscript has been created by the University of Chicago as Operator of Argonne National ( Argonne") under Contract No. W-31-109-ENG-38 with the U. S. Department of Energy. The U.S. Government retains for itself, and others acting on its behalf, a paid-up, non

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101

Reduction of Pertechnetate By Acetohydroxamic Acid: Formation of [tc**II(NO)(AHA)(2)(H(2)O)]**+ And Implications for the UREX Process  

Science Conference Proceedings (OSTI)

Reductive nitrosylation and complexation of ammonium pertechnetate by acetohydroxamic acid has been achieved in aqueous nitric and perchloric acid solutions. The kinetics of the reaction depend on the relative concentrations of the reaction components and are accelerated at higher temperatures. The reaction does not occur unless conditions are acidic. Analysis of the X-ray absorption fine structure spectroscopic data is consistent with a pseudo-octahedral geometry and the linear Tc-N-O bond typical of technetium nitrosyl compounds, and electron spin resonance spectroscopy is consistent with a d{sup 5} Tc(II) nitrosyl complex. The nitrosyl source is generally AHA, but it may be augmented by some products of the reaction with nitric acid. The resulting low-valency trans-aquonitrosyl(diacetohydroxamic)-technetium(II) complex ([Tc{sup II}(NO)(AHA){sub 2}H{sub 2}O]{sup +}, 1) is highly soluble in water, extremely hydrophilic, and is not extracted by tri-n-butylphosphate in a dodecane diluent. Its extraction properties are not pH-dependent: potentiometric-spectrophotometric titration studies indicate a single species from pH 4 down to -0.6 (calculated). This molecule is resistant to oxidation by H{sub 2}O{sub 2}, even at high pH, and can undergo substitution to form other technetium nitrosyl complexes. The potential formation of 1 during reprocessing may strongly impact the fate of technetium in the nuclear fuel cycle.

Gong, C.-M.S.; Lukens, W.W.; Poineau, F.; Czerwinski, K.R.

2009-05-18T23:59:59.000Z

102

POTENTIAL USE OF ACTIVATED CARBON TO RECOVER TC-99 FROM 200 WEST AREA GROUNDWATER AS AN ALTERNATIVE TO MORE EXPENSIVE RESINS HANFORD SITE RICHLAND WASNINGTON  

SciTech Connect

Recent treatability testing performed on groundwater at the 200-ZP-1 Operable Unit at the Hanford Site in Richland, Washington, has shown that Purolite{reg_sign} A530E resin very effectively removes Tc-99 from groundwater. However, this resin is expensive and cannot be regenerated. In an effort to find a less expensive method for removing Tc-99 from the groundwater, a literature search was performed. The results indicated that activated carbon may be used to recover technetium (as pertechnetate, TCO{sub 4}{sup -}) from groundwater. Oak Ridge National Laboratory used activated carbon in both batch adsorption and column leaching studies. The adsorption study concluded that activated carbon absorbs TCO{sub 4}{sup -} selectively and effectively over a wide range of pH values and from various dilute electrolyte solutions (< 0.01 molarity). The column leaching studies confirmed a high adsorption capacity and selectivity of activated carbon for TCO{sub 4}{sup -}. Since activated carbon is much less expensive than Purolite A530E resin, it has been determined that a more extensive literature search is warranted to determine if recent studies have reached similar conclusions, and, if so, pilot testing of 200-ZP-1 groundwater wi11 likely be implemented. It is possible that less expensive, activated carbon canisters could be used as pre-filters to remove Tc-99, followed by the use of the more expensive Purolite A530E resin as a polishing step.

BYRNES ME; ROSSI AJ; TORTOSO AC

2009-12-03T23:59:59.000Z

103

High-Tc Superconductor  

NLE Websites -- All DOE Office Websites (Extended Search)

Synchrotron Radiation Laboratory, Stanford University, Stanford, CA 94305 High-temperature superconductors (HTSC's), following their remarkable discovery in 1986, continue to be at...

104

Bond polarons and high-Tc superconductivity in single layer La_(2-x)Sr_xCuO_4: normal state currents and pairing  

E-Print Network (OSTI)

We use the term "bond polaron" for a phonon coupled entity which makes the link between neighboring conductive CuO_2 layers in high-Tc superconductive materials. The link is essential for the superconductivity which requires a long range phase coherence in addition to pairing of carriers. The linkage features studied point to a process which is less dependent on the doped hole density implanted as x in the solid solution. The analysis applies to single layered materials mostly but may help understand multilayer ones as well.

Mladen Georgiev

2011-03-16T23:59:59.000Z

105

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

Science Conference Proceedings (OSTI)

Reductive nitrosylation and complexation of ammonium pertechnetate by acetohydroxamic acid has been achieved in aqueous nitric and perchloric acid solutions. The kinetics of the reaction depend on the relative concentrations of the reaction components and are accelerated at higher temperatures. The reaction does not occur unless conditions are acidic. Analysis of the x-ray absorption fine structure spectroscopic data is consistent with a pseudo-octahedral geometry with the linear Tc-N-O bond typical of technetium nitrosyl compounds, and electron spin resonance spectroscopy is consistent with a the d{sup 5} Tc(II) nitrosyl complex. The nitrosyl source is generally AHA, but may be augmented by products of reaction with nitric acid. The resulting low-valency trans-aquonitrosyl(diacetohydroxamic)-technetium(II) complex (1) is highly soluble in water, extremely hydrophilic, and is not extracted by tri-n-butylphosphate in a dodecane diluent. Its extraction properties are not pH-dependent; titration studies indicate a single species from pH 4.5 down to -0.6 (calculated). This molecule is resistant to oxidation by H{sub 2}O{sub 2}, even at high pH, and can undergo substitution to form other technetium nitrosyl complexes. The formation of 1 may strongly impact the fate of technetium in the nuclear fuel cycle.

1Harry Reid Center for Environmental Studies, Nuclear Science and Technology Division, University of Nevada, Las Vegas, Las Vegas, NV, 89154-4006; Gong, Cynthia-May S; Poineau, Frederic; Lukens, Wayne W; Czerwinski, Kenneth R.

2008-02-26T23:59:59.000Z

106

Preliminary investigations for technology assessment of /sup 99/Mo production from LEU (low enriched uranium) targets. [For production of /sup 99m/Tc; by different methods  

SciTech Connect

This paper presents the results of preliminary studies on the effects of substituting low enriched uranium (LEU) for highly enriched uranium (HEU) in targets for the production of fission product /sup 99/Mo. Issues that were addressed are: (1) purity and yield of the /sup 99/Mo//sup 99m/Tc product, (2) fabrication of LEU targets and related concerns, and (3) radioactive waste. Laboratory experimentation was part of the efforts for issues (1) and (2); thus far, radioactive waste disposal has only been addressed in a paper study. Although the reported results are still preliminary, there is reason to be optimistic about the feasibility of utilizing LEU targets for /sup 99/Mo production. 37 refs., 1 fig., 5 tabs.

Vandegrift, G.F.; Chaiko, D.J.; Heinrich, R.R.; Kucera, E.T.; Jensen, K.J.; Poa, D.S.; Varma, R.; Vissers, D.R.

1986-11-01T23:59:59.000Z

107

Doses to the hand during the administration of radiolabeled antibodies containing Y-90, Tc-99m, I-131, and Lu-177  

Science Conference Proceedings (OSTI)

Exposure of the hands of medical personnel administering radiolabeled antibodies (RABs) was evaluated on the basis of (a) observing and photo-documenting administration techniques, and (b) experimental data on doses to thermoluminescent dosimeters (TLDs) on fingers of phantom hands holding syringes, and on syringes, with radionuclides in the syringes in each case. Actual exposure data for I-131 and Lu-177 were obtained in field studies. Variations in handling and administration techniques were identified. Dose rates measured using TLDs on the surface of loaded syringes were adjusted for differences in electronic stopping power, absorption coefficients, and attenuation between dosimeters and tissue to estimate dose-to-skin averaged over 1 cm{sup 2} at 7 mg cm{sup {minus}2} depth for Y-90, Tc-99m, I-131, and Lu-177. Dose rate coefficients to the skin, if in contact with the syringe wall, were 89, 1.9, 3.8, and 0.41 {micro}Sv s{sup {minus}1} per 37 MBq (1 mCi) for Y-90, Tc-99m, I-131, and Lu-177, respectively. For dose reduction, when using Y-90 the importance was clearly indicated of (a) avoiding direct contact with syringes containing RABs, if practical, and (b) using a beta-particle shield on the syringe. In using a syringe for injection, doses can best be approximated for the geometry studied by (a) wearing a finger dosimeter on the middle finger, toward the outside of the hand, on the hand operating the plunger, and (b) wearing finger dosimeters on the inner (palm) side of the finger on the hand that supports the syringe for energetic beta-particle emitters, such as Y-90 and Re-188.

Barber, D.E. [Minnesota Univ., Minneapolis, MN (United States). School of Public Health; Carsten, A.L.; Kaurin, D.G.L.; Baum, J.W. [Brookhaven National Lab., Upton, NY (United States)

1997-02-01T23:59:59.000Z

108

EVALUATION AND SELECTION OF 99TC GETTERS FOR SEQUESTRATION OF LIQUID SECONDARY WASTE RESULTING FROM VITRIFICATION OF RADIOACTIVE WASTE FROM HANFORD  

Science Conference Proceedings (OSTI)

Getters are most commonly inorganic materials that selectively adsorb radionuclide and metallic contaminants. Typically, these materials have been deployed in two different modes to immobilize and retard contaminant release from monolithic waste forms. One mode is to first use getters to selectively scavenge the radionuclide of interest from a liquid waste stream, and then incorporate the radionuclide-loaded getters in cementitious or other monolithic waste forms. The other mode consists of mixing getters and liquid waste together during formulation of monolithic waste forms. Desirable characteristics for a getter material include, (1) specific adsorption of radionuclide of interest and very high selectivity toward radionuclides of concern in concentrations that would be several orders of magnitude less than the concentrations of competing anions and cations, (2) adsorption capacity that should be sufficient for the mass and volume of the material that will be deployed to be within practicable limits, (3) long-term adsorption and retention of radionuclide, (4) sufficient physical and chemical stability that its radionuclide retention performance will not degrade significantly during the designed life span of the waste form, (5) chemical stability under the range of Eh, pH, and solution conditions that exist in the waste form environment, and (6) should not adversely affect chemical and physical integrity of waste forms. We conducted a literature review to identify getters that are suitable for effectively sequestering 99Tc in monolithic waste forms that are being evaluated for stabilizing secondary liquid waste streams resulting from treatment and vitrification of radioactive tank wastes at Hanford. As a result of this review, we identified a set of getters that warrant further evaluation for this specific application.

Mattigod, Shas V.; Westsik, Joseph H.

2011-03-31T23:59:59.000Z

109

TC_CLOUD_REGIME.cdr  

NLE Websites -- All DOE Office Websites (Extended Search)

Tropical cloud properties as a function of regime Regimes? Monsoon versus Break * Different synoptic vertical velocity profiles - Changes convective inhibition, corresponding...

110

Functionalized Silicates for Tc Retention  

• Thermal treatment systems planned for the Hanford Waste Treatment Plant (WTP) ... and other Resource Conservation and Recovery Act ... cement pore ...

111

Tc Removal using Goethite Precipitation  

Immobilization Methods of Hanford Nuclear Wastes Hanford wastes stored in 177 (149 single-shell and 28 double-shell) underground storage tanks will be treated by

112

New k-phase materials, k-(ET) sub 2 Cu(N(CN) sub 2 )X: X = Cl, Br and I: The synthesis, structure and superconductivity above 11 K in the Cl ( Tc = 12. 8 K, 0. 3 kbar) and Br( Tc = 11. 6 K) salts  

Science Conference Proceedings (OSTI)

The syntheses, structures, selected physical properties, and band electronic structures of three copper (I) dicyanamide halide salts of bis(ethylenedithio)tetrathiafulvalene ({kappa}-(ET){sub 2}Cu(N(CN){sub 2})X, where X = Cl, Br, and I) are discussed. X-ray crystallographic studies demonstrate that the three derivatives are isostructural. The bromide salt is an ambient pressure superconductor with an inductive onset at 11.6 K and a resistive onset at 12.5 K. {kappa}-(ET){sub 2}Cu(N(CN){sub 2})Cl exhibits the highest reported superconducting transition temperature ({Tc} = 12.8 K, 0.3 kbar) for an organic superconductor, once a semiconductor-semiconductor transition (42 K) is suppressed. The application of GE varnish or Apiezon N grease to crystals of {kappa}-(ET){sub 2}Cu(N(CN){sub 2})Cl provides sufficient stress to induce superconductivity at ambient pressure.'' Crystals of the iodide remain metallic to {approximately}150 K, where they become weakly semiconductive. No sign of superconductivity was detected at pressures (hydrostatic and shearing) up to 5.2 kbar and at temperatures as low as 1.1 K. The band electronic structures of the three salts are essentially identical. The differences in superconducting properties are explained in terms of differences in lattice softness, which are strongly influenced by short C-H{hor ellipsis}donor and C-H{hor ellipsis}anion contacts. 17 refs., 2 figs.

Wang, H.H.; Carlson, K.D.; Geiser, U.; Kini, A.M.; Schultz, A.J.; Williams, J.M.; Montgomery, L.K.; Kwok, W.K.; Welp, U.; Vandervoort, K.G.; Boryschuk, S.J.; Strieby Crouch, A.V.; Kommers, J.M.; Watkins, D.M. (Argonne National Lab., IL (USA)); Schirber, J.E.; Overmyer, D.L. (Sandia National Labs., Albuquerque, NM (USA)); Jung, D.; Novoa, J.J.; Whangbo, M.H. (North Carolina State Univ., Raleigh, NC (USA))

1990-01-01T23:59:59.000Z

113

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")  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

THE 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") I. INTRODUCTION The U.S. Department of Energy (DOE) and Washington State Department of Ecology (Ecology) have mutual responsibilities for accomplishing cleanup of the Hanford Site as well as continuing ongoing waste management activities consistent with applicable federal and state laws and regulations. The Hanford Federal Facility Agreement and Consent Order (otherwise called the "Tri-Party Agreement", or "TPA") contains various enforceable milestones that apply to tank waste management activities. DOE is also required to comply with applicable requirements of

114

Why is high-Tc superconductivity exciting?  

NLE Websites -- All DOE Office Websites (Extended Search)

Stripes: Competition and Complexity in High Temperature Superconductors John Tranquada Advanced Photon Source Argonne National Laboratory December 1, 2004 1957 Bardeen Cooper...

115

ACRONYMS AND ABBREVIATIONS TC -Training Circular  

E-Print Network (OSTI)

a center rest. stellite - A cast al alloy of chromium, cobalt. and sometimes tungsten, used to make lathe

Gellman, Andrew J.

116

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 

117

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

E-Print Network (OSTI)

/Microwave Replacement Units 889 Air Charter for Football 867 Moving Services, Household/Commercial 890 Air Charter) 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

Papautsky, Ian

118

LD Vehicles AFDC 11 25 13 TC.xlsx  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Model Year 2014: Alternative Fuel and Advanced Technology Vehicles Model Year 2014: Alternative Fuel and Advanced Technology Vehicles 1 (Updated 11/25/2013) MY Fuel/Powertrain Type Make Model Vehicle Type Engine Size/Cylinders Transmission Emissions Class 2 Fuel Economy Gasoline 3,4 City/Hwy Fuel Economy Alt Fuel 3,4 City/Hwy 2014 B20 Chevrolet Cruze Sedan 2.0L I4 diesel Auto Tier II Bin 5 LEV III LEV160 27/46 N/A 2014 B20 Chevrolet Express 2500/3500 2WD Van 6.6L V8 diesel Auto N/A N/A N/A 2014 B20 Chevrolet Silverado 2500/3500 HD 2WD/4WD Pickup 6.6L V8 diesel Auto N/A N/A N/A 2014 B20 Ford Super Duty F-250/350/450 Pickup 6.7L V8 diesel Auto N/A N/A N/A 2014 B20 Ford Super Duty F-650/750 Pickup 6.7L I6 diesel Auto N/A N/A N/A 2014 B20 Ford Transit Van 3.2L I5 diesel Auto N/A N/A N/A 2014 B20 GMC Savana 2500/3500 2WD Van 6.6L V8 diesel Auto N/A

119

Phase Equilibria Relationships of High-Tc Superconductors  

SciTech Connect

As an integral part of a R&D program partially supported by the Electricity Delivery and Energy Reliability Office of DOE, we have determined phase equilibria data and phase diagrams for the three generations of superconductor materials: 1st generation, (Bi,Pb)-Sr-Ca- Cu-O systems; 2nd generation, Ba-R-Cu-O systems (R=lanthanides and yttrium); and 3rd generation, MgB2 systems. Our studies involved bulk materials, single crystals and thin films. This report gives a summary of our accomplishments, a list of publications, and 15 selected journal publications

Winnie Wong-Ng

2011-01-11T23:59:59.000Z

120

Grain boundary dissipation in high-{Tc} superconductors  

SciTech Connect

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.

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

2000-04-03T23:59:59.000Z

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

A Novel Class of High-TC Ferromagnetic Semiconductors  

SciTech Connect

We have grown single crystals of novel ruthenates (Sr,Ba)(Fe,Co){sub 2+x}Ru{sub 4-x}O{sub 11} that exhibit long-range ferromagnetic order well above room temperature, accompanied by narrow-gap semiconducting properties that include a large anomalous Hall conductance, low resistivity, high carrier concentration and low coercive field, which are properties well suited to spintronic applications. X-ray diffraction, EDX, neutron diffraction and x-ray absorption measurements on single crystals firmly establish the 'R-Type' hexagonal ferrite structure (space group P6{sub 3}/mmc, No 194) and single-phase nature of all samples. The electronic structure and physical properties can be tuned by simple chemical substitution of two elements, M = Fe or Co, or by varying the relative concentration of 3d solutes and 4d Ru. Our magnetotransport, x-ray magnetic circular dichroism and magnetic moment data suggest the mechanism for FM order is quite different from that governing known dilute magnetic semiconductors.

Shlyk, L. V.; Kryukov, S. A.; De Long, L. E.; Schupp-Niewa, B.; Niewa, R.; Lynn, J. W.; Huang, Qing; Arenholz, E.; Piamonteze, C.

2008-05-30T23:59:59.000Z

122

Grain Boundary Effects in High and Low Tc Superconductors  

Science Conference Proceedings (OSTI)

Feb 1, 2002 ... TMS Member price: 10.00. Non-member price: 25.00. TMS Student Member price : 10.00. Product In Stock. Description A high critical current ...

123

OIML TC 8/SC 7/004/1CD  

Science Conference Proceedings (OSTI)

... does not cover meters used for gases in the liquefied state, multi-phase, steam, compressed natural gas (CNG), or liquefied natural gas (LNG). ...

2010-11-10T23:59:59.000Z

124

Investigating High-TC Superconductivity on the Atomic Scale  

E-Print Network (OSTI)

Review Procedures for the storage and digestion of natural waters for the determination for the measurement of ®lterable and total phosphorus is given. Procedures reported in the literature for the storage or refrigeration (1±58C) with a preservative is suitable only for short term storage (days- months). If water

Davis, James C.

125

TC 89 Thermal performance of buildings and building components  

E-Print Network (OSTI)

of cavities 6 7 Report 10 ANNEX A (informative) Tabulated thermal conductivity (-value) of selected materials and building components. Introduction The test method according to prEN 12412­2 "Windows, doors and shutters. The standard does not include effects of solar radiation and heat transfer caused by air leakage and three

Massachusetts at Amherst, University of

126

Halogenated high {Tc} superconductors and method of preparation  

DOE Patents (OSTI)

Disclosed is a method for producing a superconductor of the R-Ba-Cu-O system which comprises of selecting an insulating material of the formula RBa{sub x}Cu{sub y}O{sub z} where R is selected from the group consisting of Y, La, Pr, Nd, Sm, Eu, Gd, Ho, Er, Tm, and Lu, and where x ranges from about 1.7 to about 2.3, y ranges from about 2.7 to about 3.3 and z ranges from about 5.0 to about 6.99, and halogenating said material with a halogen selected from the group consisting of chlorine, bromine, iodine, and mixtures thereof, while maintaining said material at a temperature ranging from about 160 to about 440{degrees}C, for a period of time sufficient to cause incorporation of said halogen into said material. Also, disclosed are the materials produced by the method and articles of manufacture incorporating said materials as electronic circuitry components.

Radousky, H.B.; Glass, R.S.; Fluss, M.J.

1990-11-14T23:59:59.000Z

127

PANEL PROCEEDING SERIES IAEA-TC-145/5  

E-Print Network (OSTI)

. Possible draw-backs of the very-high-field approach are difficulties in beam access, remote handling or remote handling, and is capable of long pulse lengths, but the extrapolations in plasma configuration advantage of TFTR buildings, power supplies, controls, neutral beams, coolant systems, and remote handling

128

Lessons Learned from Substation Predictive Maintenance Project TC Project #7014  

Science Conference Proceedings (OSTI)

A tailored collaboration conducted between 1993 and 1998 by EPRI and ten participating utilities aimed at optimizing substation performance through predictive maintenance. This report summarizes the lessons learned from the project; a more comprehensive report will be published after further research.

1998-12-19T23:59:59.000Z

129

OIML TC 8/SC 7/004/1CD  

Science Conference Proceedings (OSTI)

... Technical requireme nts DE 6.1.9 5.14.9 gen. ... Comments: This test makes sense, however… In the ... as the highest pressure where testing would be ...

2010-10-21T23:59:59.000Z

130

Radiation detector using a bulk high {Tc} superconductor  

DOE Patents (OSTI)

A radiation detector is provided, wherein a bulk high T superconducting sample is placed in a magnetic field and maintained at a superconducting temperature. Photons of incident radiation will cause localized heating in superconducting loops of the sample destroying trapped flux and redistributing the fluxons, and reducing the critical current of the loops. Subsequent cooling of the sample in the magnetic field will cause trapped flux redistributed Abrikosov fluxons and trapped Josephson fluxons. The destruction and trapping of the fluxons causes changes in the magnetization of the sample inducing currents in opposite directions in a pickup coil which is coupled by an input coil to an rf SQUID).

Artusom, J.F.; Franks, L.A.; Hull, K.L.; Symko, O.G.

1992-12-31T23:59:59.000Z

131

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

NLE Websites -- All DOE Office Websites (Extended Search)

the polaron behaves as a negatively charged particle with a larger mass and lower mobility than an isolated electron. Earlier research at the ALS had linked the formation...

132

Spin-polaron theory of high-{Tc} superconductivity: I, spin polarons and high-{Tc} pairing  

SciTech Connect

The concept of a spin polaron is introduced and contrasted with the more familiar ionic polaron picture. A brief review of aspects of ionic bipolaronic superconductivity is given with particular emphasis on the real-space pairing and true Bose condensation characteristics. The formation energy of spin polarons is then calculated in analogy with ionic polarons. The spin-flip energy of a Cu spin in an antiferromagnetically aligned CuO{sub 2} plane is discussed. It is shown that the introduction of holes into the CuO{sub 2} planes will always lead to the destruction of long-range AF ordering due to the formation of spin polarons. The pairing of two spin polarons can be expected because of the reestablishment of local (short-range) AF ordering; the magnitude of the pairing energy is estimated using a simplified model. The paper closes with a brief discussion of the formal theory of spin polarons.

Wood, R.F.

1993-06-01T23:59:59.000Z

133

From semiconductor-semiconductor transition (42 K) to the highest- Tc organic superconductor,. kappa. -(ET) sub 2 Cu(N(CN) sub 2 )Cl ( Tc = 12. 5 K)  

Science Conference Proceedings (OSTI)

The discovery of an organic superconductor with the highest transition temperature (125 K) recorded following the suppression of a semiconductor-semiconductor transition (42 K) is reported. The reported compound is a kappa-phase superconductor, kappa-(ET){sub 2}Cu(N(CN){sub 2})Cl, which is isostructural with the recently prepared ambient-pressure superconductor kappa-(ET){sub 2}Cu(N(CN){sub 2})Br with a transition temperature of 11.5 K that has been previously reported. Band electronic structural calculations show the newly discovered compound to be a two-dimensional metal. 15 refs., 2 figs.

Williams, J.M.; Kini, A.M.; Wang, H.H.; Carlson, K.D.; Geiser, U.; Montgomery, L.K.; Pyrka, G.J.; Watkins, D.M.; Kommers, J.M.; Boryschuk, S.J.; Strieby Crouch, A.V.; Kwok, W.K. (Argonne National Lab., IL (USA)); Schirber, J.E.; Overmyer, D.L. (Sandia National Labs., Albuquerque, NM (USA)); Jung, D.; Whangbo, Myunghwan (North Carolina State Univ., Raleigh (USA))

1990-09-05T23:59:59.000Z

134

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

E-Print Network (OSTI)

Ar-filled ion chanbers at SSRL beamlines 11-2 and 4-1; datablue). Data obtained using SSRL beam line 4-1. Figure 4. Tcin black. Data obtained using SSRL beam line 4- Figure 5.

McGregor, Donna

2011-01-01T23:59:59.000Z

135

Microsoft Word - BSA ConsTC-Rev11 Jun 2012.docx  

NLE Websites -- All DOE Office Websites (Extended Search)

Construction, Rev. 11; (Jun-12) 1 of 44 Construction, Rev. 11; (Jun-12) 1 of 44 BROOKHAVEN SCIENCE ASSOCIATES, LLC GENERAL TERMS AND CONDITIONS FOR CONSTRUCTION AND LABOR HOUR AGREEMENTS AT BROOKHAVEN NATIONAL LABORATORY Table of Contents Article 1 DEFINITIONS ................................................................................................................... 3 Article 2 ORDER OF PRECEDENCE ............................................................................................. 3

136

Microsoft Word - ComercialTC-Rev 5 eVerify Final.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

5, (Jan. 2010) 1 of 8 5, (Jan. 2010) 1 of 8 BROOKHAVEN SCIENCE ASSOCIATES, LLC GENERAL TERMS AND CONDITIONS FOR COMMERCIAL ITEMS AT BROOKHAVEN NATIONAL LABORATORY 1. ACCEPTANCE. Acceptance of this Agreement must be in accordance with and strictly limited to these Terms and Conditions. An attempted acknowledgment or acceptance which contains provisions conflicting or additional to these Terms and Conditions or which varies any terms or conditions shall have no force or effect. Performance by the Seller without an executed acknowledgment shall be deemed to be performance in accordance with these Terms and Conditions. 2. DEFINITIONS. The following terms shall have the meanings below: (a) "Government" means the United States of America and includes the U.S.

137

Microsoft Word - BSA ConsTC-Rev9draft clean _3_.docx  

NLE Websites -- All DOE Office Websites (Extended Search)

9; (April 2011) 1 of 33 9; (April 2011) 1 of 33 BROOKHAVEN SCIENCE ASSOCIATES, LLC GENERAL TERMS AND CONDITIONS FOR CONSTRUCTION AND LABOR HOUR AGREEMENTS AT BROOKHAVEN NATIONAL LABORATORY Article 1 Definitions................................................................................................................... 2 Article 2 Order of Precedence .................................................................................................... 2 Article 3 Acceptance of Agreement ........................................................................................... 2 Article 4 Complete Agreement .................................................................................................. 3 Article 5 Assignment ................................................................................................................. 3

138

Research on HCF Tests and Damage Model of TC11 Alloy Welded ...  

Science Conference Proceedings (OSTI)

A Quantitative Crystallographic Model for Fatigue Crack Propagation through ... Effect of Temperature on The Loss of Ductility of S-135 Grade Drill Pipe Steel ...

139

Dynamical Layer Decoupling in a Stripe-ordered, High T_c Superconductor  

Science Conference Proceedings (OSTI)

In the stripe-ordered state of a strongly-correlated two-dimensional electronic system, under a set of special circumstances, the superconducting condensate, like the magnetic order, can occur at a non-zero wave-vector corresponding to a spatial period double that of the charge order. In this case, the Josephson coupling between near neighbor planes, especially in a crystal with the special structure of La{sub 2-x}Ba{sub x}CuO{sub 4}, vanishes identically. We propose that this is the underlying cause of the dynamical decoupling of the layers recently observed in transport measurements at x = 1/8.

Berg, E.

2010-04-06T23:59:59.000Z

140

Effect of nonmagnetic impurities on stripes in high-Tc cuprates  

E-Print Network (OSTI)

We perform the numerically exact diagonalization study of the t-J model with nonmagnetic impurities to clarify the relation between Zn impurities and the stripes. By examining the hole-hole correlation function for a two-hole

T. Tohyama; M. Takahashi; S. Maekawa A; Si Sj; Jimp S Sj

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Microsoft Word - BSA ConsTC-Rev8 012811 clean.docx  

NLE Websites -- All DOE Office Websites (Extended Search)

; (Jan. 2011) 1 of 31 ; (Jan. 2011) 1 of 31 BROOKHAVEN SCIENCE ASSOCIATES, LLC GENERAL TERMS AND CONDITIONS FOR CONSTRUCTION AND LABOR HOUR AGREEMENTS AT BROOKHAVEN NATIONAL LABORATORY Article 1 Definitions................................................................................................................... 2 Article 2 Order of Precedence.................................................................................................... 2 Article 3 Acceptance of Agreement........................................................................................... 2 Article 4 Complete Agreement .................................................................................................. 3 Article 5 Assignment .................................................................................................................

142

Microsoft Word - ConsTC-Rev6eVerify Final.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

A, Rev 6 - Construction (Jan. 2010) 1 of 29 A, Rev 6 - Construction (Jan. 2010) 1 of 29 ATTACHMENT A BROOKHAVEN SCIENCE ASSOCIATES, LLC GENERAL TERMS AND CONDITIONS FOR CONSTRUCTION AND LABOR HOUR CONTRACTS AT BROOKHAVEN NATIONAL LABORATORY Article 1. Definitions................................................................................................................... 2 Article 2. Order of Precedence.................................................................................................... 2 Article 3. Complete Agreement .................................................................................................. 2 Article 4. Assignment ................................................................................................................. 2 Article 5. Independent Contractor; Hold Harmless

143

Dependence of critical current density on microstructure and processing of high-{Tc} superconductors  

Science Conference Proceedings (OSTI)

Microstructural origins for reduced weak-link behavior in high-J{sup c} melt-processed YBCO, spray pyrolyzed thick films of Tl-1223, metallic precursor Y-124 polycrystalline powder-in-tube (PIT)wires and PIT Bi-2212/2223 are discussed. Since the materials studied are the highest J{sub c}, polycrystalline, high-T{sub c} superconductors fabricated worldwide, the results provide important guidelines for further improvements in superconducting properties, thereby enabling practical applications of these materials. It is found that strongly linked current flow within domains of melt-processed 123 occurs effectively through a single crystal path. In c-axis oriented, polycrystalline Tl-1223 thick films, local in-plane texture has been found to play a crucial role in the reduced weak-link behavior. Formation of {open_quotes}colonies{close_quotes} of grains with a common c-axis and modest in-plane misorientation was observed. Furthermore, a colony boundary in general has a varying misorientation along the boundary. Large regions comprised primarily of low angle boundaries were observed. Percolative transport through a network of such small angle boundaries appears to provide the non-weak-linked current path. Although powder-in-tube BSCCO 2212 and 2223 also appear to have a {open_quotes}colony{close_quotes} microstructure, there are some important differences. Colonies in BSCCO consist of stacks of grains with similar c-axis orientation in contrast to colonies in Tl-1223 films where few grains are stacked on top of one another. In the case of Y-124 wires, weak macroscopic in-plane texture is found. Additional measurements are underway to determine if a sharper, local in-plane texture also exists. It is found that in three of the four types of superconductors studied, reduced weak-link behavior can be ascribed to some degree of biaxial alignment between grains, either on a {open_quotes}local{close_quotes} or a {open_quotes}global{close_quotes} scale.

Goyal, A.; Specht, E.D.; Wang, Z.L.; Kroeger, D.M. [Oak Ridge National Lab., TN (United States); Sutliff, J.A.; Tkaczyk, J.E.; Deluca, J.A. [General Electric Corporate R& D, Schenectady, NY (United States); Masur, L.; Riley, G.N. Jr. [American Superconductor Corp., Westborough, MA (United States)

1994-10-01T23:59:59.000Z

144

Phonon characteristics of high {Tc} superconductors from neutron Doppler broadening measurements  

SciTech Connect

Statistical information on the phonon frequency spectrum of materials can be measured by neutron transmission techniques if they contain nuclei with low energy resonances, narrow enough to be Doppler-broadened, in their neutron cross sections. The authors have carried out some measurements using this technique for materials of the lanthanum barium cuprate class, La{sub 2{minus}x}Ba{sub x}CuO{sub 4}. Two samples with slightly different concentrations of oxygen, one being superconductive, the other not, were examined. Pure lanthanum cuprate was also measured. Lanthanum, barium and copper all have relatively low energy narrow resonances. Thus it should be possible to detect differences in the phonons carried by different kinds of atom in the lattice. Neutron cross section measurements have been made with high energy resolution and statistical precision on the 59m flight path of LANSCE, the pulsed spallation neutron source at Los Alamos National Laboratory. Measurements on all three materials were made over a range of temperatures from 15K to 300K, with small steps through the critical temperature region near 27K. No significant changes in the mean phonon energy of the lanthanum atoms were observed near the critical temperature of the super-conducting material. It appears however that the mean phonon energy of lanthanum in the superconductor is considerably higher than that in the non-superconductors. The samples used in this series of experiments were too thin in barium and copper to determine anything significant about their phonon spectra.

Trela, W.J.; Kwei, G.H.; Lynn, J.E. [Los Alamos National Lab., NM (United States); Meggers, K. [Univ. of Kiel (Germany)

1994-12-01T23:59:59.000Z

145

Microsoft PowerPoint - 2-03 PEGG-1 - Tc Incorporation in WTP...  

NLE Websites -- All DOE Office Websites (Extended Search)

S. Muller Vitreous State Laboratory The Catholic University of America Washington, DC DOE EM Waste Processing Technical Exchange 2010 Print Close Technetium Retention During LAW...

146

The BMRC High-Resolution Tropical Cyclone Prediction System: TC-LAPS  

Science Conference Proceedings (OSTI)

A new Tropical Cyclone Limited Area Prediction System has been developed at the Australian Bureau of Meteorology Research Centre. The features of the new prediction system can be summarized as follows: first, a 12-h, coarse-resolution data ...

Noel E. Davidson; Harry C. Weber

2000-05-01T23:59:59.000Z

147

Flow Rate Measurement Using {sup 99m}Tc Radiotracer Method in a Pipe Installation  

SciTech Connect

Flow rate is a significant parameter for managing processes in chemical processing plants and water processing facility. Accurate measurement of the flow rate allows engineers to monitor the delivery of process material, which in turn impacts a plant's capacity to produce their products. One of the available methods for determining the flow rate of a process material is by introducing a radiotracer to the system that mimics the material's flow pattern. In this study, a low activity Technetium-99m radioisotope was injected into a water piping setup and the 2'' x 2'' NaI (Tl) detectors were calibrated to detect spectrum peaks at specific points of the pipe installation. Using pulse velocity method, water flow rate was determined to be 11.3 litres per minute. For the sampling method, at different pump capacity, the flow rate was 15.0 litres per minute.

Sipaun, S. M.; Bakar, A. Q. Abu; Othman, N.; Shaari, M. R.; Adnan, M. A. K. [Industrial Technology Division, Malaysian Nuclear Agency, 43000 Bangi (Malaysia); Yusof, J. Mohd; Demanah, R. [Waste and Environmental Technology Divison, Malaysian Nuclear Agency, 43000 Bangi (Malaysia)

2010-07-07T23:59:59.000Z

148

Abstract Complex oxides exhibit the most disparate behaviors, from ferroelectricity to high Tc supercon-  

E-Print Network (OSTI)

of different oxide interfaces in het- erostructures with titanates, manganites and cuprates based Laboratory, BLDG 3025M, MS 6030, P.O. Box 2008, Oak Ridge, TN 37831, USA e-mail: mvarela@ornl.gov V. Pen~a Ã?

Pennycook, Steve

149

Microsoft Word - ComercialTC-Rev 5 eVerify Final.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

5, (Jan. 2010) 1 of 8 BROOKHAVEN SCIENCE ASSOCIATES, LLC GENERAL TERMS AND CONDITIONS FOR COMMERCIAL ITEMS AT BROOKHAVEN NATIONAL LABORATORY 1. ACCEPTANCE. Acceptance of this...

150

Microsoft Word - ConsTC-Rev6eVerify Final.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

(Jan. 2010) 1 of 29 ATTACHMENT A BROOKHAVEN SCIENCE ASSOCIATES, LLC GENERAL TERMS AND CONDITIONS FOR CONSTRUCTION AND LABOR HOUR CONTRACTS AT BROOKHAVEN NATIONAL...

151

Microsoft Word - BSA ConsTC-Rev8A 022311 .docx  

NLE Websites -- All DOE Office Websites (Extended Search)

A; (Feb. 2011) 1 of 31 BROOKHAVEN SCIENCE ASSOCIATES, LLC GENERAL TERMS AND CONDITIONS FOR CONSTRUCTION AND LABOR HOUR AGREEMENTS AT BROOKHAVEN NATIONAL LABORATORY Article 1...

152

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

Science Conference Proceedings (OSTI)

'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.

Istok, Jonathan D

2008-07-07T23:59:59.000Z

153

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

DOE Patents (OSTI)

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.

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

1997-06-24T23:59:59.000Z

154

Bearing design for flywheel energy storage using high-TC superconductors  

DOE Patents (OSTI)

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).

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

2000-01-01T23:59:59.000Z

155

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

DOE Patents (OSTI)

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.

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

1996-07-30T23:59:59.000Z

156

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

E-Print Network (OSTI)

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

Qiu, Qinru

157

Microsoft Word - BSA ConsTC-Rev10 Aug 2010.docx  

NLE Websites -- All DOE Office Websites (Extended Search)

in conjunction with the BSA ES&H Manager or designee, and documented on an Incident Investigation Report. The report must be completed and submitted to the Contractors Project...

158

Exploring Competing Orders in the High-Tc Cuprate Phase Diagram Using Angle Resolved Photoemission Spectroscopy  

E-Print Network (OSTI)

the competing order. Does this order fundamentally compete,see in Section 4.3, this order does not appear to correspondunit cells on the order 10? A, ARPES does not have good bulk

Garcia, Daniel Robert

2010-01-01T23:59:59.000Z

159

Instructions for use in preparing Attachment 1, Special T&C's...  

NLE Websites -- All DOE Office Websites (Extended Search)

earned on a revolving fund, program income, rebates, refunds, contract settlements, audit recoveries, credits, discounts, and interest earned on any of those funds before...

160

Sorption of Np and Tc in Underground Waters by Uranium Oxides  

NLE Websites -- All DOE Office Websites (Extended Search)

worldwide. As a rule DUF 6 is stored in steel cylinders near power stations 1,2 in Russia, and at uranium en- richment plants in the U.S. It is desirable to convert the UF 6 to...

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

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

SciTech Connect

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.

Campuzano, Juan Carlos [University of Illinois, Chicago

2012-03-07T23:59:59.000Z

162

HYBRID SULFUR ELECTROLYZER DEVELOPMENT, NHI WORK PACKAGE N-SR07TC0301, FY07 FIRST QUARTER REPORT  

DOE Green Energy (OSTI)

The proof of concept of SO2 electrolysis for the hybrid sulfur (HyS) process is the second priority research target of the DOE Nuclear Hydrogen Initiative's thermochemical program for FY07. The proof of concept of the liquid-phase option must be demonstrated at the single cell level for an extended run times (>100 hours). The rate of development of HyS will depend on the identification of a promising membrane or an alternative means for controlling sulfur formation. Once successful long-duration operation has been demonstrated, SRNL will develop a multi-cell stack that can be connected to the H2SO4 decomposer being developed by SNL for the S-I ILS for a Hybrid Sulfur Integrated Laboratory-Scale Experiment during FY 2008. During the first quarter of FY07, SRNL continued the component development and membrane development activities with the goal of identifying and characterizing improved electrodes, electrocatalysts, membranes and MEA configurations which could then be tested at larger scale in the SDE test facility. A modified glass cell was fabricated to allow measurements of sulfur dioxide (SO2) transport across membrane samples at elevated temperatures (up to 70 C). This testing also includes evaluating SO2 transport in different sulfuric acid concentrations (30-70 wt%). A new potentiostat/frequency analyzer was installed for determining ionic conductivity of membranes. This instrument enhances our capabilities to characterize membrane, electrocatalyst and MEA properties and performance. Continuing work from FY06, evaluations were preformed on various commercial and experimental membranes and electrocatalyst materials for the SDE. Several different types of commercially-available membranes were analyzed for sulfur dioxide transport as a function of acid strength including perfluorinated sulfonic acid (PFSA), sulfonated polyetherketone-ketone, and poly-benzimidazole (PBI) membranes. Experimental membranes from the sulfonated diels-alder polyphenylenes (SDAPP) and modified Nafion{reg_sign} 117 were evaluated for SO{sub 2} transport as well. These membranes exhibited reduced transport coefficient for SO{sub 2} transport without the loss in ionic conductivity.

Summers, W

2006-12-20T23:59:59.000Z

163

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

E-Print Network (OSTI)

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.

Tian De Cao

2007-06-01T23:59:59.000Z

164

HYBRID SULFUR ELECROLYZER DEVELOPMENT, NHI WORK PACKAGE N-SR07TC0301, FY08 FIRST QUARTER REPORT  

DOE Green Energy (OSTI)

Hydrogen has been identified as a leading candidate to replace petroleum as part of the transition to a sustainable energy system, and major efforts are being conducted worldwide to develop the technologies and supporting activities required for this transition. In the United States, the federal research efforts are led by the U.S. Department of Energy (DOE). The U.S. DOE Hydrogen Program is an integrated inter-office program being conducted by the Office of Energy Efficiency and Renewable Energy, Office of Nuclear Energy (DOE-NE), Office of Fossil Energy and Office of Science. The primary objective of the DOE-NE Nuclear Hydrogen Initiative (NHI) is to develop the nuclear hydrogen production technologies necessary to produce hydrogen at a cost competitive with other alternative transportation fuels. The focus of the NHI is on thermochemical cycles and high temperature electrolysis. The Savannah River National Laboratory (SRNL) has been tasked with the primary responsibility to perform research and development in order to characterize, evaluate and develop the Hybrid Sulfur (HyS) thermochemical process. The HyS Process uses a sulfur dioxide depolarized electrolyzer (SDE) to split water and produce hydrogen. During FY05 and FY06, SRNL designed and conducted proof-of-concept testing for a SDE using a low temperature, PEM fuel cell-type design concept. The advantages of this design concept include high electrochemical efficiency and small footprint, characteristics that are crucial for successful implementation on a commercial scale. During FY07, SRNL extended the range of testing of the SDE to higher temperature and pressure, conducted a 100-hour longevity test, and designed and built a larger, multi-cell stack electrolyzer. The proof of concept of SO2 electrolysis for the HyS Process is a priority research target for the FY 2008 NHI Program. Technical options must be better defined and the challenges better understood. The current status of electrolyzer performance must be established by operation at elevated temperature (>90C) and pressure (>10 atmospheres) and during a long duration run (>100 hours). SRNL is pursuing the liquid-phase sulfur dioxide decoupled electrolyzer (SDE) option, which is the main focus of the NHI work. The rate of development of HyS will depend on the identification of a promising membrane or an alternative means for controlling sulfur formation at the cathode of the cell. SRNL will work with Sandia National Laboratory (SNL), universities, and industry to address this issue. Electrolyzers of larger size will be required as the process development proceeds, and SRNL will test a multi-cell stack that was built in FY 2007. Work will be initiated for a Hybrid Sulfur Integrated Laboratory-Scale (ILS) Experiment that will combine a SRNL electrolyzer with the sulfuric acid decomposer developed by SNL for the S-I ILS. A review will be held at mid-year, and if progress warrants, work will progress to the ILS level including ILS system design, electrolyzer fabrication and infrastructure development. Benchmarks to be considered include electrochemical efficiency, membrane durability, and minimization of SO2 crossover.

Summers, W

2007-12-20T23:59:59.000Z

165

An Investigation of the Pressure-induced Superconductivity Transition Temperature Tc and Related Properties in Elemental Superconductors .  

E-Print Network (OSTI)

??More than half of the elements in the periodic table, 53 out of 92, are known to be superconductors with 23 elements becoming superconductors with… (more)

Nixon, Lane W.

2011-01-01T23:59:59.000Z

166

Dr. Norbert Fabricius  

Science Conference Proceedings (OSTI)

... IEC/TC 56 Dependability IEC/TC 82 Solar photovoltaic energy systems IEC/TC 86 Fibre optics ... Regulation To Support: ... Scientific Community ...

2011-10-03T23:59:59.000Z

167

Appendix A Report of the Activities of the International ...  

Science Conference Proceedings (OSTI)

... and relevant TCs, in particular TC 2, TC 9, TC 9/SC 3 and TC 11 ... and • requested that the 14th Conference consider this opinion in the budget for the ...

2013-07-08T23:59:59.000Z

168

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

Science Conference Proceedings (OSTI)

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.

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

169

Assimilating AMSU-A Radiances in TC Core Area with NOAA Operational HWRF (2011) and a Hybrid Data Assimilation System: Danielle (2010)  

Science Conference Proceedings (OSTI)

A regional hybrid variational-ensemble data assimilation system (HVEDAS), the Maximum Likelihood Ensemble Filter (MLEF), is applied to the 2011 version of the NOAA operational Hurricane Weather Research and Forecasting (HWRF) model to evaluate the ...

Man Zhang; Milija Zupanski; Min-Jeong Kim; John A. Knaff

170

Isotopic Fingerprint of Electron-Phonon Coupling in High-Tc Cuprates H. Iwasawa,1,2,* J. F. Douglas,3  

E-Print Network (OSTI)

-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan 6 Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan 7 Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima 739

Dessau, Daniel S.

171

High-resolution angle-resolved photoemission studies of high Tc superconductor Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8  

SciTech Connect

An angle-resolved photoemission study of the normal and superconducting states in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} was performed. Measurements in the normal state show bands dispersing through the Fermi level from at least 350 meV below E{sub F}. The Fermi level crossings are consistant with local-density band calculation, including a point calculated to be of Bi-O character. Additional measurements were made where bands crossed the Fermi level between 100 and 250K, along with measurements on an adjacent Pt foil. The Fermi edges of both materials agree to within the noise. Below the Fermi level, the spectra show correlation effects on the form of an increased effective mass. The shape of the spectra can be explained by a lifetime-broadened photohole and secondary electrons. The effective inverse photohole lifetime is linear in energy. A superconducting gap has been measured at a number of points where there is density at the Fermi level in the normal state. By proper modeling, a gap of 24 meV was obtained for all these points, including points of Cu-O and Bi-O character respectively, according to band calculation. The lack of gap anisotropy in the basal plane suggests that pinning in this material is not d-wave pairing.

Liu, Rong.

1990-09-21T23:59:59.000Z

172

First easily reproduced solution-phase synthesis and confirmation of superconductivity in the fullerene K sub x C sub 60 ( Tc = 18. 0 + 0. 1 K)  

Science Conference Proceedings (OSTI)

The first easily reproduced solution-phase synthesis of K{sub x}C{sub 60} and the confirmation of T{sub c} at 18.0+-0.1K are reported herein. The reduction of C{sub 60} in solution with excess K was found to lead to a superconducting K{sub x}C{sub 60} rather than a highly resistive material as expected. The solution method of preparation is much simpler that the vapor-phase K transfer and reaction. The actual compound composition is not yet known. 17 refs., 2 figs.

Wang, H.H.; Kini, A.M.; Savall, B.M.; Carlson, K.D.; Williams, J.M.; Lykke, K.R.; Wurz, P.; Pellin, M.J.; Gruen, D.M.; Welp, U.; Kwok, Waikwong; Fleshler, S.; Crabtree, G.W. (Argonne National Lab., IL (United States)); Parker, D.H. (Argonne National Lab., IL (United States) Univ. of California, Irvine (United States))

1991-07-10T23:59:59.000Z

173

Energy Gaps in the Failed High-Tc Superconductor La1.875Ba0.125CuO4  

Science Conference Proceedings (OSTI)

A central issue in high-T{sub c} superconductivity is the nature of the normal-state gap (pseudogap) in the underdoped regime and its relationship with superconductivity. Despite persistent efforts, theoretical ideas for the pseudogap evolve around fluctuating superconductivity, competing order, and spectral weight suppression due to many-body effects. Recently, although some experiments in the superconducting state indicate a distinction between the superconducting gap and pseudogap, others in the normal state, either by extrapolation from high-temperature data or directly from La{sub 1.875)Ba{sub 0.125}CuO{sub 4} (LBCO-1/8) at low temperature, suggest the ground-state pseudogap is a single gap of d-wave form. Here, we report angle-resolved photoemission data from LBCO-1/8, collected with improved experimental conditions, that reveal the ground-state pseudogap has a pronounced deviation from the simple d-wave form. It contains two distinct components: a d-waev component within an extended region around the node and the other abruptly enhanced close to the antinode, pointing to a dual nature of the pseudogap in this failed high-T{sub c} superconductor that involves a possible precursor-pairing energy scale around the node and another of different but unknown origin near the antinode.

Not Available

2011-08-11T23:59:59.000Z

174

Energy Gaps in the Failed High-Tc Superconductor La_1.875Ba_0.125Cu_O4  

Science Conference Proceedings (OSTI)

A central issue on high-T{sub c} superconductivity is the nature of the normal-state gap (pseudogap) in the underdoped regime and its relationship with superconductivity. Despite persistent efforts, theoretical ideas for the pseudogap evolve around fluctuating superconductivity, competing order and spectral weight suppression due to many-body effects. Recently, while some experiments in the superconducting state indicate a distinction between the superconducting gap and pseudogap, others in the normal state, either by extrapolation from high-temperature data or directly from La{sub 1.875}Ba{sub 0.125}CuO{sub 4} (LBCO-1/8) at low temperature, suggest the ground-state pseudogap is a single gap of d-wave form. Here we report angle-resolved photoemission (ARPES) data from LBCO-1/8, collected with improved experimental conditions, that reveal the ground-state pseudogap has a pronounced deviation from the simple d-wave form. It contains two distinct components: a d-wave component within an extended region around the node and the other abruptly enhanced close to the antinode, pointing to a dual nature of the pseudogap in this failed high-T{sub c} superconductor which involves a possible precursor pairing energy scale around the node and another of different but unknown origin near the antinode.

Tanaka, K.

2011-08-19T23:59:59.000Z

175

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

E-Print Network (OSTI)

Radiation Laboratory (SSRL) at beamline 11-2 using a Si(220)Radiation Laboratory (SSRL) for assistance in collectingDE- AC02-05CH11231, and at SSRL, a national user facility

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

176

Extraction of actinide (III, IV, V, VI) ions and TcO4- by N,N,N',N'- tetraisobutyl-3-oxa-glutaramide  

E-Print Network (OSTI)

International Conference on Nuclear Fuel Reprocessing andto generate spent nuclear fuels with higher burn-up, indesirable solvent in nuclear fuel reprocessing. In searching

Tian, Guoxin; Zhang, Ping; Wang, Jianchen; Rao, Linfeng

2005-01-01T23:59:59.000Z

177

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

E-Print Network (OSTI)

reprocessing spent nuclear fuel . The resulting hydrophilicThis reaction could impact the proposed nuclear fuel cycle.fate of technetium in the nuclear fuel cycle. Technetium,

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

178

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

SciTech Connect

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.

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

2006-06-01T23:59:59.000Z

179

VHF Free-Free Beam High-Q Micromechanical Resonators Kun Wang, Yinglei Yu, Ark-Chew Wong, and Clark T.-C. Nguyen  

E-Print Network (OSTI)

VHF Free-Free Beam High-Q Micromechanical Resonators Kun Wang, Yinglei Yu, Ark-Chew Wong, and Clark Science University of Michigan Ann Arbor, Michigan 48109-2122 ABSTRACT Free-free beam, flexural and their associated losses are virtually eliminated from the design. Using this approach, free-free beam µmechanical

Nguyen, Clark T.-C.

180

Technetium Retention During LAW Vitrification  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Technetium Retention During Technetium Retention During LAW Vitrification Ian L. Pegg Vitreous State Laboratory The Catholic University of America Washington, DC November 18, 2010 Overview * Tc in borosilcate glass structure * Re as a surrogate for Tc * Summary of previous data on Tc incorporation into LAW glass * Summary of results from ongoing test program * Single-pass retention vs. retention with recycle * Tc volatilization during container filling Tc in LAW Glass Structure * Tc is present as Tc 7+ and Tc 4+ * Tc 7+ is dominant in more oxidized glasses and Tc 4+ is dominant in reduced glasses * Strongly reducing conditions produce Tc 0 * The structure and local environment of Tc in WTP LAW glasses has been investigated by: * Synchrotron X-Ray Absorption Spectroscopy * Lukens, McKeown, Buechele, Muller, Shuh, and Pegg, Chem. Mater., 19, 559 (2007)

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Interannual Variability of Northwest Australian Tropical Cyclones  

Science Conference Proceedings (OSTI)

Tropical cyclone (TC) activity over the southeast Indian Ocean has been studied far less than other TC basins, such as the North Atlantic and northwest Pacific. The authors examine the interannual TC variability of the northwest Australian (NWAUS)...

Kevin H. Goebbert; Lance M. Leslie

2010-09-01T23:59:59.000Z

182

Tropical Cyclone Tracking Using a Neighbor Enclosed Area Tracking Algorithm  

Science Conference Proceedings (OSTI)

Tropical cyclone (TC) tracking is essential for calculating TC statistics from gridded datasets. A new method for TC tracking is presented here using neighbor enclosed area tracking (NEAT), which is based on the temporal overlap of enclosed areas ...

Yuya Satake; Masaru Inatsu; Masato Mori; Akira Hasegawa

2013-10-01T23:59:59.000Z

183

HiR Thermal Testing Results  

NLE Websites -- All DOE Office Websites (Extended Search)

3 position specimen specimen description (test conditions: cold side -18C, warm side 21C) date + time 100 mm from head TC center of glass TC 100 mm from sill TC upper IR line...

184

HiR Thermal Testing Results  

NLE Websites -- All DOE Office Websites (Extended Search)

1 position specimen specimen description (test conditions: cold side -18C, warm side 21C) date + time 100 mm from head TC center of glass TC 100 mm from sill TC upper IR line...

185

HiR Thermal Testing Results  

NLE Websites -- All DOE Office Websites (Extended Search)

0 position specimen specimen description (test conditions: cold side -18C, warm side 21C) date + time 100 mm from head TC center of glass TC 100 mm from sill TC upper IR line...

186

HiR Thermal Testing Results  

NLE Websites -- All DOE Office Websites (Extended Search)

position specimen specimen description (test conditions: cold side -18C, warm side 21C) date + time 100 mm from head TC center of glass TC 100 mm from sill TC upper IR line...

187

HiR Thermal Testing Results  

NLE Websites -- All DOE Office Websites (Extended Search)

8 position specimen specimen description (test conditions: cold side -18C, warm side 21C) date + time 100 mm from head TC center of glass TC 100 mm from sill TC upper IR line...

188

Spatially Inhomogeneous Trends of Tropical Cyclone Intensity over the Western North Pacific for 1977–2010  

Science Conference Proceedings (OSTI)

The spatial distribution of trends in tropical cyclone (TC) intensity over the western North Pacific Ocean (WNP) during the period 1977–2010 was examined using five TC datasets. The spatial distribution of the TC intensity was expressed by ...

Doo-Sun R. Park; Chang-Hoi Ho; Joo-Hong Kim; Hyeong-Seog Kim

2013-07-01T23:59:59.000Z

189

Influences of ENSO on Western North Pacific Tropical Cyclone Kinetic Energy and Its Meridional Transport  

Science Conference Proceedings (OSTI)

This study investigates the influences of ENSO on tropical cyclone (TC) kinetic energy and its meridional transport in the western North Pacific (WNP) using the TC wind field obtained after a method for removing TC vortices from reanalysis data is ...

Yao Ha; Zhong Zhong; Yijia Hu; Xiuqun Yang

2013-01-01T23:59:59.000Z

190

INTRODUCTION  

Science Conference Proceedings (OSTI)

... members and relevant TCs, in particular TC 2, TC 9, TC 9/SC 3 and ... requested that the 14 th Conference consider this opinion in the budget for the ...

2013-07-08T23:59:59.000Z

191

An Overview of the China Meteorological Administration Tropical Cyclone Database  

Science Conference Proceedings (OSTI)

The China Meteorological Administration’s tropical cyclone (TC) database includes not only the best track dataset, but also TC-induced wind and precipitation data. This article summarizes the characteristics and key technical details of the CMA TC ...

Ming Ying; Wei Zhang; Hui Yu; Xiaoqin Lu; Jingxian Feng; Yongxiang Fan; Yongti Zhu; Dequan Chen

192

Tropical cyclone tracking using a neighbor enclosed area tracking algorithm  

Science Conference Proceedings (OSTI)

Tropical cyclone (TC) tracking is essential for calculating TC statistics from gridded datasets. A new method for TC tracking is presented here using neighbor enclosed area tracking (NEAT), which is based on the temporal overlap of enclosed areas ...

Yuya Satake; Masaru Inatsu; Masato Mori; Akira Hasegawa

193

NETL F 451.1-1/1 Categorical Exclusion (CX) Designation Form  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Systems Demonstrate thermochromic (TC) windows under various conditions to quantify energy usage and energy savings of TC windows versus commercial grade double pane, fixed...

194

ISO Standards Documents  

Science Conference Proceedings (OSTI)

ISO/TC 34: Food products and TC 34/SC 17: Management systems for food safety ISO Standards Documents iso3rss ISO Standards Development ISO Standards Development

195

SciTech Connect: "smart grid"  

Office of Scientific and Technical Information (OSTI)

Response of High-Tc Superconductor Metamaterials to High Intensity THz Radiation Citation Details In-Document Search Title: Response of High-Tc Superconductor Metamaterials to High...

196

Indoor sound criteria according to the American Society of Heating, Refrigerating and Air?Conditioning Engineers (ASHRAE)—An introduction  

Science Conference Proceedings (OSTI)

ASHRAE TC?2.6 Sound and Vibration Controltechnical committee has been activity involved with development

2005-01-01T23:59:59.000Z

197

ET: EPICS TCL/TK interface  

Science Conference Proceedings (OSTI)

This document describes the tc1 command and command types which are used to communicate with EPICS database servers. The application libraries upon which et is built include tc1, tk, tc1-dp, and blt. The reader of this document is assumed to be familiar with tc1/tk.

Daly, B.

1995-02-01T23:59:59.000Z

198

International Journal of Phytoremediation, 7:231240, 2005 Copyright C Taylor & Francis Inc.  

E-Print Network (OSTI)

using an on-of Dark Current and of Linearity (by using an on- board LED and variable integration times Index (TC) Volcanic SO2 estimate (TC) SO2 Index (TC,NP)g ( , , ) Solar Azimuth Angle (TC,LP) Spacecraft

Ma, Lena

199

The chemical control of high-TC superconductivity: metal-superconductor-insulator transition in (Tl1-yPby)Sr2(Ca1-xYx)Cu2O7  

Science Conference Proceedings (OSTI)

Keywords: (Tl,Pb)-1212, Hall effect, Mott criterion, metal-insulator transition, resistivity, strontium, yttrium

R. S. Liu; P. P. Edwards; S. F. Hu; D. A. Jefferson; Y. T. Huang; S. F. Wu; M.-J. Tsai

1993-10-01T23:59:59.000Z

200

The central bond [sup 13]C=[sup 13]C isotope effect for superconductivity in high-[Tc] [beta]*-(ET)[sub 2]I[sub 3] and its implications regarding the superconducting pairing mechanism  

SciTech Connect

The authors report a new study, based on dc magnetization measurements, of the superconducting isotope effect for [sup 13]C-substitution in the central C=C atoms of ET [bis(ethylenedithio)tetrathiafulvalene] in [beta]*-(ET)[sub 2]I[sub 3] [or [beta][sub H]-(ET)[sub 2]I[sub 3

Carlson, K.D.; Williams, J.M.; Geiser, U.; Kini, A.M.; Wang, H.H.; Klemm, R.A.; Kumar, S.K.; Schlueter, J.A.; Ferraro, J.R.; Lykke, K.R.; Wurz, P.; Sutin, J.D.B. (Argonne National Lab., IL (United States)); Parker, D.H. (Argonne National Lab., IL (United States) Univ. of California, Irvine (United States)); Schirber, J.E.; Venturini, E.L. (Sandia National Laboratories, Albuquerque, NM (United States)); Stout, P. (Bio-Rad, Cambridge, MA (United States))

1992-12-02T23:59:59.000Z

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Recovery and Determination of Adsorbed Technetium on Savannah River Site Charcoal Stack Samples  

Science Conference Proceedings (OSTI)

Experimental results are provided for the sample analyses for technetium (Tc) in charcoal samples placed in-line with a Savannah River Site (SRS) processing stack effluent stream as a part of an environmental surveillance program. The method for Tc removal from charcoal was based on that originally developed with high purity charcoal. Presented is the process that allowed for the quantitative analysis of 99Tc in SRS charcoal stack samples with and without 97Tc as a tracer. The results obtained with the method using the 97Tc tracer quantitatively confirm the results obtained with no tracer added. All samples contain 99Tc at the pg g-1 level.

Lahoda, Kristy G.; Engelmann, Mark D.; Farmer, Orville T.; Ballou, Nathan E.

2008-03-01T23:59:59.000Z

202

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

Science Conference Proceedings (OSTI)

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.

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

203

Trends in Energy Management Technology - Part 4: Review of Advanced Applications in Energy Management, Control, and Information Systems  

E-Print Network (OSTI)

www.nist.gov/tc411/1043-RP_FDD_Literature_Review.pdf Smith,Energy Commission, Fall 1999. FDD for Rooftop AC – Purduewww.nist.gov/tc411/1043-RP_FDD_Tools.pdf IMDS – Lawrence

Yee, Gaymond; Webster, Tom

2003-01-01T23:59:59.000Z

204

Objective Guidance for Use in Setting Tropical Cyclone Conditions of Readiness  

Science Conference Proceedings (OSTI)

The Department of Defense uses a Tropical Cyclone Conditions of Readiness (TC-CORs) system to prepare bases and evacuate assets and personnel in advance of adverse weather associated with tropical cyclones (TCs). TC-CORs are recommended by weather ...

Charles R. Sampson; Andrea B. Schumacher; John A. Knaff; Mark DeMaria; Edward M. Fukada; Chris A. Sisko; David P. Roberts; Katherine A. Winters; Harold M. Wilson

2012-08-01T23:59:59.000Z

205

Estimating Local Memory of Tropical Cyclones through MPI Anomaly Evolution  

Science Conference Proceedings (OSTI)

This study examines the local memory of atmospheric and oceanic changes associated with a tropical cyclone (TC). The memory is quantified through anomalous maximum potential intensity (MPI) evolution for 20 days prior to the arrival of a TC ...

Robert E. Hart; Ryan N. Maue; Michael C. Watson

2007-12-01T23:59:59.000Z

206

Cloud Clusters and Tropical Cyclogenesis: Developing and Nondeveloping Systems and Their Large-Scale Environment  

Science Conference Proceedings (OSTI)

Tropical cyclone (TC) genesis occurs only when there is persistent, organized convection. The question of why some cloud clusters develop into a TC and others do not remains unresolved. This question cannot be addressed adequately without studying ...

Brandon W. Kerns; Shuyi S. Chen

2013-01-01T23:59:59.000Z

207

Toward improved tropical cyclone intensity forecasts : probabilistic prediction, predictability, and the role of verification  

E-Print Network (OSTI)

Over the past two decades, deterministic predictions of tropical cyclone (TC) intensity consistently scored poorly in mean absolute error (MAE) verification, despite the concurrent advancement of TC modeling and observing ...

Moskaitis, Jonathan Robert

2009-01-01T23:59:59.000Z

208

Seasonal Prediction of Tropical Cyclone Activity Near Taiwan Using the Bayesian Multivariate Regression Method  

Science Conference Proceedings (OSTI)

A Poisson generalized linear regression model cast within a Bayesian framework is applied to forecast the seasonal tropical cyclone (TC) counts in the vicinity of Taiwan. The TC season considered is June–November and the data period used for ...

Mong-Ming Lu; Pao-Shin Chu; Yun-Ching Lin

2010-12-01T23:59:59.000Z

209

Demonstration and Evaluation of U.S. Postal Service ELectric...  

NLE Websites -- All DOE Office Websites (Extended Search)

2000 AQMD CONTRACT 00192 Project Number: TC-00-0101 Report Number: TC-00-0101-TR01 Electric Vehicle Technical Center Prepared by: Ricardo Solares Juan C. Argueta Charles J. Kim...

210

A Potential Vorticity Tendency Diagnostic Approach for Tropical Cyclone Motion  

Science Conference Proceedings (OSTI)

In order to understand the roles of various physical processes in baroclinic tropical cyclone (TC) motion and the vertical coupling between the upper- and lower-level circulations, a new dynamical framework is advanced. A TC is treated as a ...

Liguang Wu; Bin Wang

2000-06-01T23:59:59.000Z

211

Inactive Period of Western North Pacific Tropical Cyclone Activity in 1998–2011  

Science Conference Proceedings (OSTI)

Tropical cyclone (TC) activity over the western North Pacific (WNP) exhibits a significant interdecadal variation during 1960–2011, with two distinct active and inactive periods each. This study examines changes in TC activity and atmospheric ...

Kin Sik Liu; Johnny C. L. Chan

2013-04-01T23:59:59.000Z

212

A pressure-based analysis of the historical western North Pacific tropical cyclone intensity record  

Science Conference Proceedings (OSTI)

The western North Pacific Ocean is the most active tropical cyclone (TC) basin. However, recent studies are not conclusive on whether the TC activity is increasing or decreasing, at least when calculations are based on maximum sustained winds. For ...

Kenneth R. Knapp; John A. Knaff; Charles R. Sampson; Gustavo M. Riggio; Adam D. Schnapp

213

Tropical cyclone eye fix using genetic algorithm with temporal information  

Science Conference Proceedings (OSTI)

Tropical cyclones (TCs) are weather systems with vast destructive power. To give early TC warnings, accurate location of their circulation centers, or “eyes”, is required. The pattern matching solution to this TC eye fix problem works by ...

Ka Yan Wong; Chi Lap Yip

2005-09-01T23:59:59.000Z

214

Analysis of north atlantic tropical cyclone intensify change using data mining  

Science Conference Proceedings (OSTI)

Tropical cyclones (TC), especially when their intensity reaches hurricane scale, can become a costly natural hazard. Accurate prediction of tropical cyclone intensity is very difficult because of inadequate observations on TC structures, poor ...

Jiang Tang / Ruixin Yang

2010-01-01T23:59:59.000Z

215

Validation of a Tropical Cyclone Steering Response Function with a Barotropic Adjoint Model  

Science Conference Proceedings (OSTI)

The steering of a tropical cyclone (TC) vortex is commonly understood as the advection of the TC vortex by an “environmental wind.” In past studies, the environmental steering wind vector has been defined by the horizontal and vertical averaging ...

Brett T. Hoover; Michael C. Morgan

2010-06-01T23:59:59.000Z

216

Tropical cyclone identification and tracking system using integrated neural oscillatory elastic graph matching and hybrid RBF network track mining techniques  

Science Conference Proceedings (OSTI)

We present an automatic and integrated neural network-based tropical cyclone (TC) identification and track mining system. The proposed system consists of two main modules: 1) TC pattern identification system using neural oscillatory elastic graph matching ...

R. S.T. Lee; J. N.K. Liu

2000-05-01T23:59:59.000Z

217

Climatological Variations in North Atlantic Tropical Cyclone Tracks  

Science Conference Proceedings (OSTI)

This study investigates the relationship between tropical cyclone (TC) tracks and climatological variations in large-scale environmental parameters associated with the TC steering flow. By using the Atlantic Ocean hurricane database for 1950–2010, ...

Angela J. Colbert; Brian J. Soden

2012-01-01T23:59:59.000Z

218

Joint Contribution of Multiple Equatorial Waves to Tropical Cyclogenesis over the Western North Pacific  

Science Conference Proceedings (OSTI)

A composite study is performed to examine the differences in equatorial wave behaviors and large-scale background patterns during tropical cyclone (TC) genesis. After removing TC contamination, Madden–Julian oscillation (MJO), equatorial Rossby (...

Guanghua Chen; Chia Chou

2014-01-01T23:59:59.000Z

219

A History of Western North Pacific Tropical Cyclone Track Forecast Skill  

Science Conference Proceedings (OSTI)

The tropical cyclone (TC) track forecasting skill of operational numerical weather prediction (NWP) models and their consensus is examined for the western North Pacific from 1992 to 2002. The TC track forecasting skill of the operational NWP ...

James S. Goerss; Charles R. Sampson; James M. Gross

2004-06-01T23:59:59.000Z

220

A Pressure-Based Analysis of the Historical Western North Pacific Tropical Cyclone Intensity Record  

Science Conference Proceedings (OSTI)

The western North Pacific Ocean is the most active tropical cyclone (TC) basin. However, recent studies are not conclusive on whether the TC activity is increasing or decreasing, at least when calculations are based on maximum sustained winds. For ...

Kenneth R. Knapp; John A. Knaff; Charles R. Sampson; Gustavo M. Riggio; Adam D. Schnapp

2013-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

HiR Thermal Testing Results  

NLE Websites -- All DOE Office Websites (Extended Search)

1 (specimen 22 data from Test 19) position specimen specimen description (test conditions: cold side -18C, warm side 21C) date + time 100 mm from head TC center of glass TC...

222

On the Initial Development of Asymmetric Vertical Motion and Horizontal Relative Flow in a Mature Tropical Cyclone Embedded in Environmental Vertical Shear  

Science Conference Proceedings (OSTI)

In this paper, we focus on the initial development of asymmetric vertical motion and horizontal relative flow in a mature tropical cyclone (TC) embedded in an environmental vertical shear. The fully compressible, non-hydrostatic TC model was used ...

Yamei Xu; Yuqing Wang

223

Movement and Vertical Coupling of Adiabatic Baroclinic Tropical Cyclones  

Science Conference Proceedings (OSTI)

The vertical coupling and movement of an adiabatic baroclinic tropical cyclone (TC) are investigated through two numerical experiments in which the TC is affected by either a vertical environmental shear or a differential beta drift. In both ...

Liguang Wu; Bin Wang

2001-07-01T23:59:59.000Z

224

Objective Tropical Cyclone Center Tracking Using Single-Doppler Radar  

Science Conference Proceedings (OSTI)

This study presents an extension of the ground-based velocity track display (GBVTD)-simplex tropical cyclone (TC) circulation center–finding algorithm to further improve the accuracy and consistency of TC center estimates from single-Doppler radar ...

Michael M. Bell; Wen-Chau Lee

2012-05-01T23:59:59.000Z

225

Preparation of high specific activity technetium-96  

DOE Patents (OSTI)

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.

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

1992-01-01T23:59:59.000Z

226

Tropical Cyclone Formations over the Western North Pacific in the Navy Operational Global Atmospheric Prediction System Forecasts  

Science Conference Proceedings (OSTI)

A set of criteria is developed to identify tropical cyclone (TC) formations in the Navy Operational Global Atmospheric Prediction System (NOGAPS) analyses and forecast fields. Then the NOGAPS forecasts of TC formations from 1997 to 1999 are ...

Kevin K. W. Cheung; Russell L. Elsberry

2002-08-01T23:59:59.000Z

227

Prediction and Diagnosis of Tropical Cyclone Formation in an NWP System. Part III: Diagnosis of Developing and Nondeveloping Storms  

Science Conference Proceedings (OSTI)

This is the third of a three-part investigation into tropical cyclone (TC) genesis in the Australian Bureau of Meteorology’s Tropical Cyclone Limited Area Prediction System (TC-LAPS), an operational numerical weather prediction (NWP) forecast ...

K. J. Tory; N. E. Davidson; M. T. Montgomery

2007-09-01T23:59:59.000Z

228

Prediction and Diagnosis of Tropical Cyclone Formation in an NWP System. Part I: The Critical Role of Vortex Enhancement in Deep Convection  

Science Conference Proceedings (OSTI)

This is the first of a three-part investigation into tropical cyclone (TC) genesis in the Australian Bureau of Meteorology’s Tropical Cyclone Limited Area Prediction System (TC-LAPS), an operational numerical weather prediction (NWP) forecast ...

K. J. Tory; M. T. Montgomery; N. E. Davidson

2006-12-01T23:59:59.000Z

229

Report of the Workshop on Petascale Systems Integration for Large Scale Facilities  

E-Print Network (OSTI)

William T.C. Kramer – NERSC Report Author: William T.C.Kramer – NERSC Report Editors: Ucilia Wang, Jon BashorNASA), William T.C. Kramer (NERSC) Break Out Group Leaders

2007-01-01T23:59:59.000Z

230

Response of Tropical Cyclone Potential Intensity to a Global Warming Scenario in the IPCC AR4 CGCMs  

Science Conference Proceedings (OSTI)

This paper reports on an analysis of the tropical cyclone (TC) potential intensity (PI) and its control parameters in transient global warming simulations. Specifically, the TC PI is calculated for phase 3 of the Coupled Model Intercomparison ...

Jinhua Yu; Yuqing Wang; Kevin Hamilton

2010-03-01T23:59:59.000Z

231

The Roles of an Expanding Wind Field and Inertial Stability in Tropical Cyclone Secondary Eyewall Formation  

Science Conference Proceedings (OSTI)

The Weather and Research and Forecasting Model (WRF) is used to simulate secondary eyewall formation (SEF) in a tropical cyclone (TC) on the ? plane. The simulated SEF process is accompanied by an outward expansion of kinetic energy and the TC ...

Christopher M. Rozoff; David S. Nolan; James P. Kossin; Fuqing Zhang; Juan Fang

2012-09-01T23:59:59.000Z

232

EV Technical Center  

NLE Websites -- All DOE Office Websites (Extended Search)

March 2001 AQMD CONTRACT 00192 Project Number: TC-00-0101 Report Number: TC-00-0101-TR03 Electric Vehicle Technical Center Prepared by: Michel Wehrey Juan C. Argueta Julie M....

233

Uncertainty of Tropical Cyclone Best-Track Information  

Science Conference Proceedings (OSTI)

With the growing use of tropical cyclone (TC) best-track information for weather and climate applications, it is important to understand the uncertainties that are contained in the TC position and intensity information. Here, an attempt is made to ...

Ryan D. Torn; Chris Snyder

2012-06-01T23:59:59.000Z

234

Contributions of Barotropic Energy Conversion to Northwest Pacific Tropical Cyclone Activity during ENSO  

Science Conference Proceedings (OSTI)

The contribution of barotropic energy conversion to tropical cyclone (TC) activity over the western North Pacific (WNP) during warm and cold phases of El Niño–Southern Oscillation (ENSO) is investigated by separating TC vortices from reanalysis ...

Yao Ha; Zhong Zhong; Yimin Zhu; Yijia Hu

2013-04-01T23:59:59.000Z

235

Tropical Cyclone Inner-Core Kinetic Energy Evolution  

Science Conference Proceedings (OSTI)

Tropical cyclone (TC) destructive potential is highly dependent on the distribution of the surface wind field. To gain a better understanding of wind structure evolution, TC 0–200-km wind fields from aircraft reconnaissance flight-level data are ...

Katherine S. Maclay; Mark DeMaria; Thomas H. Vonder Haar

2008-12-01T23:59:59.000Z

236

Dynamical and Physical Processes Leading to Tropical Cyclone Intensification under Upper-Level Trough Forcing  

Science Conference Proceedings (OSTI)

The rapid intensification of Tropical Cyclone (TC) Dora (2007, southwest Indian Ocean) under upper-level trough forcing is investigated. TC–trough interaction is simulated using a limited-area operational numerical weather prediction model. The ...

Marie-Dominique Leroux; Matthieu Plu; David Barbary; Frank Roux; Philippe Arbogast

2013-08-01T23:59:59.000Z

237

Sensitivity of Typhoon Track Predictions in a Regional Prediction System to Initial and Lateral Boundary Conditions  

Science Conference Proceedings (OSTI)

Tropical cyclone (TC) track predictions from the operational regional nonhydrostatic TC forecast system of the Taiwanese Central Weather Bureau (CWB) are examined for their sensitivities to initial and lateral boundary conditions. Five ...

Ling-Feng Hsiao; Melinda S. Peng; Der-Song Chen; Kang-Ning Huang; Tien-Chiang Yeh

2009-09-01T23:59:59.000Z

238

Scientists develop affordable way to generate medical isotopes...  

NLE Websites -- All DOE Office Websites (Extended Search)

affordability could help meet the growing demand for an already at-risk supply of technetium-99m (Tc-99m), Noonan said. The global supply of Tc-99m has been limited in recent...

239

Dictionary of Upriver Halkomelem, Volume I  

E-Print Network (OSTI)

te mô xwoya>, //híltu tc móx w aye//, /'The belly button is>, //C 1 í=hiltu tc C 1 í=mox w aye//, /'A little belly~ mô xweya ~ méxweya>, df //móx w =aye ~ móx w =cye ~ mcx w

Galloway, Brent Douglas

2009-01-01T23:59:59.000Z

240

Preparation of high specific activity technetium-96  

DOE Patents (OSTI)

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.

Mausner, L.F.; Srivastava, S.C.; Prach, T.

1990-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Midlevel ventilation's constraint on tropical cyclone intensity  

E-Print Network (OSTI)

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 ...

Tang, Brian Hong-An

2010-01-01T23:59:59.000Z

242

Influence of ENSO on Tropical Cyclone Intensity in the Fiji Region  

Science Conference Proceedings (OSTI)

This study examines the variation in tropical cyclone (TC) intensity for different phases of the El Niño–Southern Oscillation (ENSO) phenomenon in the Fiji, Samoa, and Tonga (FST) region. The variation in TC intensity is inferred from the ...

Savin S. Chand; Kevin J. E. Walsh

2011-08-01T23:59:59.000Z

243

Exploiting temporal coherence in real-time rendering  

Science Conference Proceedings (OSTI)

Temporal coherence (TC), the correlation of contents between adjacent rendered frames, exists across a wide range of scenes and motion types in practical real-time rendering. By taking advantage of TC, we can save redundant computation and improve ...

Daniel Scherzer; Lei Yang; Oliver Mattausch

2010-12-01T23:59:59.000Z

244

Projected changes in late 21st century tropical cyclone frequency in thirteen coupled climate models from the Coupled Model Intercomparison Project Phase 5  

Science Conference Proceedings (OSTI)

Changes in tropical cyclone (TC) frequency under anthropogenic climate change are examined for thirteen global models from the Coupled Model Intercomparison Project Phase 5 (CMIP5), using the OWZP TC detection method developed by the authors in ...

K. J. Tory; S. S. Chand; J. L. McBride; H. Ye; R. A. Dare

245

Bayesian Forecasting of Seasonal Typhoon Activity: A Track-Pattern-Oriented Categorization Approach  

Science Conference Proceedings (OSTI)

A new approach to forecasting regional and seasonal tropical cyclone (TC) frequency in the western North Pacific using the antecedent large-scale environmental conditions is proposed. This approach, based on TC track types, yields probabilistic ...

Pao-Shin Chu; Xin Zhao; Chang-Hoi Ho; Hyeong-Seog Kim; Mong-Ming Lu; Joo-Hong Kim

2010-12-01T23:59:59.000Z

246

Modeling Seasonal Tropical Cyclone Activity in the Fiji Region as a Binary Classification Problem  

Science Conference Proceedings (OSTI)

This study presents a binary classification model for the prediction of tropical cyclone (TC) activity in the Fiji, Samoa, and Tonga regions (the FST region) using the accumulated cyclone energy (ACE) as a proxy of TC activity. A probit regression ...

Savin S. Chand; Kevin J. E. Walsh

2012-07-01T23:59:59.000Z

247

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

Science Conference Proceedings (OSTI)

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.

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

2008-12-01T23:59:59.000Z

248

The Five Elements of Brazing  

Science Conference Proceedings (OSTI)

Table 1   The five elements of brazing...Fixture mass vs. assembly mass Cost Cost of electricity Cost of natural gas Cost of alternate fuels Heat loss of furnaces Cost of heating fixtures, belts, etc. Compatibility with atmosphere Temperature measurement Type of thermocouple (T/C) T/C Calibration T/C Drift T/C vs. atmosphere Effect of heat (±)...

249

Innovations in Semiconductor Devices for Exascale ...  

Science Conference Proceedings (OSTI)

Innovations in Semiconductor Devices for Exascale Computing. TC Chen IBM Fellow and Vice President of Science and ...

2010-10-05T23:59:59.000Z

250

LYON REGULATORY CONSIDERATIONS FOR USE OF CEMENTITOUS MATERIALS IN  

Tank Waste Storage Project Manager Department of Ecology, State of Washington. ... • TC & WM EIS = Tank Closure and Waste Management Environmental ...

251

Fundamentals of Solid Propellant Combustion  

Science Conference Proceedings (OSTI)

... projects supported by various industrial companies (such as TC, Aerojet, Olin, RRC, Wyle Lab, ARC). Through these projects ...

1996-08-14T23:59:59.000Z

252

Sustainable Metrics for Unit Assembly Processes  

Science Conference Proceedings (OSTI)

... Sustainability, ASME sustainable processes and products, and/or ISO Technical Committee (TC) 207 on Environmental Management (http://www ...

2011-11-09T23:59:59.000Z

253

Helium Catalyzed D-D Fusion in a Levitated Dipole  

E-Print Network (OSTI)

-D design w Plasma parameters w High Tc floating coil; neutronics, refrigeration ÿ Compare with DT tokamak

254

Background and General Concepts  

Science Conference Proceedings (OSTI)

...T.C. Fowler, Value Analysis in Materials Selection and Design, Materials Selection and Design, Vol 20, ASM Handbook,

255

Acknowledgments  

Science Conference Proceedings (OSTI)

...T.C. Fowler, Value Analysis in Materials Selection and Design, Materials Selection and Design, Vol 20, ASM Handbook,

256

Examples  

Science Conference Proceedings (OSTI)

...T.C. Fowler, Value Analysis in Materials Selection and Design, Materials Selection and Design, Vol 20, ASM Handbook,

257

Selected References  

Science Conference Proceedings (OSTI)

...T.C. Fowler, Value Analysis in Materials Selection and Design, Materials Selection and Design, Vol 20, ASM Handbook,

258

The Value Analysis Process  

Science Conference Proceedings (OSTI)

...T.C. Fowler, Value Analysis in Materials Selection and Design, Materials Selection and Design, Vol 20, ASM Handbook,

259

Introduction  

Science Conference Proceedings (OSTI)

...T.C. Fowler, Value Analysis in Materials Selection and Design, Materials Selection and Design, Vol 20, ASM Handbook,

260

Value Analysis versus Total Quality Management  

Science Conference Proceedings (OSTI)

...T.C. Fowler, Value Analysis in Materials Selection and Design, Materials Selection and Design, Vol 20, ASM Handbook,

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Conclusions  

Science Conference Proceedings (OSTI)

...T.C. Fowler, Value Analysis in Materials Selection and Design, Materials Selection and Design, Vol 20, ASM Handbook,

262

Assessor Training Topics  

Science Conference Proceedings (OSTI)

... 8. Internal Audits and Management Reviews. 9. Nonconformities. 10. ... 1. APLAC TC002: Internal Audits for Laboratories and Inspection Bodies. ...

2013-07-17T23:59:59.000Z

263

Analysis of Long-range Clean Energy Investment Scenarios for Eritrea, East Africa  

E-Print Network (OSTI)

price of $20/t-C but that the most economical credits would come almost exclusively from the biomass

Van Buskirk, Robert D.

2004-01-01T23:59:59.000Z

264

JOM Table of Contents: October 1996  

Science Conference Proceedings (OSTI)

HIGH-TEMPERATURE SUPERCONDUCTORS. Commentary: Recent Developments in Practical High-Tc Superconductors [p. 18] Chandra S. Pande. Overview:

265

Tropical Cyclogenesis Associated with Rossby Wave Energy Dispersion of a Preexisting Typhoon. Part II: Numerical Simulations  

Science Conference Proceedings (OSTI)

The cyclogenesis events associated with the tropical cyclone (TC) energy dispersion are simulated in a 3D model. A new TC with realistic dynamic and thermodynamic structures forms in the wake of a preexisting TC when a large-scale monsoon gyre or ...

Tim Li; Xuyang Ge; Bin Wang; Yongti Zhu

2006-05-01T23:59:59.000Z

266

Tropical Cyclone Tornadoes, 1950–2007  

Science Conference Proceedings (OSTI)

An expanded “climatology” of U.S. tropical cyclone (TC) tornadoes covering the period 1950–2007 is presented. A major climatology published in 1991 included data on 626 TC tornadoes. Since then, almost 1200 more TC tornado records have been ...

Lori A. Schultz; Daniel J. Cecil

2009-10-01T23:59:59.000Z

267

Context dependent substitution biases vary within the human genome  

E-Print Network (OSTI)

CG) 4. TG! TA (CA! TA) 5. CT! TT (AG! AA) 6. TNG! CNG (CNA!CNG) 7. TT! TC (AA! GA) 8. GT! AT (AC! AT) 9. TC! TT (GA!44. TC! GC (GA! GC) 45. GNG! CNG (CNC! CNG) 46. GNNG! GNNA (

Nevarez, P Andrew; DeBoever, Christopher M; Freeland, Benjamin J; Quitt, Marissa A; Bush, Eliot C

2010-01-01T23:59:59.000Z

268

Final_Tech_Session_Schedule_and_Location.xls  

NLE Websites -- All DOE Office Websites (Extended Search)

75tC & < B-IGCCVENT LC for CMP > 112tC, IRRE analysis shows that if coal power sets electricity price: shift to CCS requires CMP > 140tC. 0 1 2 3 4 5 6 7 8 9 0 20 40 60 80...

269

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

Science Conference Proceedings (OSTI)

During the nuclear waste vitrification process volatilized {sup 99}Tc will be trapped by melter off-gas scrubbers and then washed out into caustic solutions, and plans are currently being contemplated for the disposal of such secondary waste. Solutions containing pertechnetate [{sup 99}Tc(VII)O{sub 4}{sup -}] were mixed with precipitating goethite and dissolved Fe(II) to determine if an iron (oxy)hydroxide-based waste form can reduce Tc(VII) and isolate Tc(IV) from oxygen. The results of these experiments demonstrate that Fe(II) with goethite efficiently catalyzes the reduction of technetium in deionized water and complex solutions that mimic the chemical composition of caustic waste scrubber media. Identification of the phases, goethite + magnetite, was performed using XRD, SEM and TEM methods. Analyses of the Tc-bearing solid products by XAFS indicate that all of the Tc(VII) was reduced to Tc(IV) and that the latter is incorporated into goethite or magnetite as octahedral Tc(IV). Batch dissolution experiments, conducted under ambient oxidizing conditions for more than 180 days, demonstrated a very limited release of Tc to solution (2-7 {micro}g Tc/g solid). Incorporation of Tc(IV) into the goethite lattice thus provides significant advantages for limiting reoxidation and curtailing release of Tc disposed in nuclear waste repositories.

W Um; H Chang; J Icenhower; W Lukens; R Serne; N Qafoku; J Westsik Jr.; E Buck; S Smith

2011-12-31T23:59:59.000Z

270

Prediction and Diagnosis of Tropical Cyclone Formation in an NWP System. Part II: A Diagnosis of Tropical Cyclone Chris Formation  

Science Conference Proceedings (OSTI)

This is the second of a three-part investigation into tropical cyclone (TC) genesis in the Australian Bureau of Meteorology’s Tropical Cyclone Limited Area Prediction System (TC-LAPS). The primary TC-LAPS vortex enhancement mechanism (convergence/...

K. J. Tory; M. T. Montgomery; N. E. Davidson; J. D. Kepert

2006-12-01T23:59:59.000Z

271

Global and regional aspects of tropical cyclone activity in the CMIP5 models  

Science Conference Proceedings (OSTI)

Tropical cyclone (TC) activity is analyzed in 14 Coupled Model Intercomparison Project phase 5 (CMIP5) models. The global TC activity in the historical runs is compared with observations. The simulation of TC activity in the CMIP5 models is not as ...

Suzana J. Camargo

272

Reprinted from Nuclear Physics A654 (1999) 436~457~  

E-Print Network (OSTI)

Actinide alloys Fast Reators Actinide mixed oxides Tc in CANDU L W R / H W R B W R | P W R CANDU homogeneous fuel Actinides MgO Tc Fast Reactors Actinide Mixed oxide (MOX) Tc in CANDU Actinides in inert

273

Characterization of Electrodeposited Technetium on Gold Foil  

Science Conference Proceedings (OSTI)

The reduction and electrodeposition of TcO{sub 4}{sup -} on a smooth gold foil electrode with an exposed area of 0.25 cm{sup 2} was performed in 1 M H{sub 2}SO{sub 4} supporting electrolyte using bulk electrolysis with a constant current density of 1.0 A/cm{sup 2} at a potential of -2.0 V. Significant hydrogen evolution accompanied the formation of Tc deposits. Tc concentrations consisted of 0.01 M and 2 x 10{sup -3} M and were electrodeposited over various times. Deposited fractions of Tc were characterized by powder x-ray diffraction, x-ray absorption fine structure spectroscopy, and scanning electron microscopy with the capability to measure semiquantitative elemental compositions by energy-dispersive x-ray emission spectroscopy. Results indicate the presence of Tc metal on all samples as the primary electrodeposited constituent for all deposition times and Tc concentrations. Thin films of Tc have been observed followed by the formation of beads that are removable by scratching. After 2000, the quantity of Tc removed from solution and deposited was 0.64 mg Tc per cm{sup 2}. The solution, after electrodeposition, showed characteristic absorbances near 500 nm corresponding to hydrolyzed Tc(IV) produced during deposition of Tc metal. No detectable Tc(IV) was deposited to the cathode.

Mausolf, Edward; Poineau, Frederic; Hartmann, Thomas; Droessler, Janelle; Czerwinski, Ken (UNLV)

2011-11-17T23:59:59.000Z

274

Spectroscopic and structural characterization of reduced technetium species in acetate media  

SciTech Connect

The reduction of ammonium pertechnetate by sodium borohydride in 0.1 M NaOH/glacial acetic acid has been studied. The reduction products (solids and solutions) have been characterized by UV-Visible spectroscopy, Scanning Electron Microscopy/Energy-dispersive X-ray emission spectroscopy (SEM/EDS), and X-ray absorption fine structure (XAFS) spectroscopy. UV-Visible spectra of the solution, after reduction, exhibit bands at 350 and 500 nm that have been attributed to the formation of polymeric Tc(IV) species. SEM/EDS on the solid (X-ray amorphous) indicates the absence of metallic Tc and the presence of oxygen. EXAFS measurements further indicate that the precipitate exhibits a [Tc({mu}-O){sub 2}Tc] core structure. XANES is consistent with the formation of Tc(III) and/or Tc(IV). Results infer that reduction of aqueous Tc(VII) by borohydride in the presence of acetic acid does not produce metallic Tc, but a mixture of various oxidation states of Tc near Tc(III) and Tc(IV).

Mausolf, Edward; Poineau, Frederic; Droessler, Janelle; Czerwinski, Kenneth R. (UNLV)

2011-11-17T23:59:59.000Z

275

The Biogeochemistry of Technetium: A review of the behavior of an artificial element in the natural environment  

Science Conference Proceedings (OSTI)

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 the pace of generation will likely 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 and its 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, 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) and the presence of Fe(II) sorbed onto Fe(III) (oxy)hydroxides 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, iron-bearing phyllosilicates and, perhaps, siderite, may ameliorate concerns over the mobility of Tc. A key factor, elucidated through experiment, in retarding the mobility of Tc in the environment is isolation from exposure to oxygen, which occurs when Tc is in a crystallographic position in a solid phase.

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

2010-10-04T23:59:59.000Z

276

Synthesis and Structure of Technetium Trichloride  

Science Conference Proceedings (OSTI)

Technetium trichloride has been synthesized by reaction of Tc{sub 2}(O{sub 2}CCH{sub 3}){sub 4}Cl{sub 2} with HCl(g) at 300 C. The mechanism of formation mimics the one described earlier in the literature for rhenium. Tc{sub 2}(O{sub 2}CCH{sub 3}){sub 2}Cl{sub 4} [P{sub T}; a = 6.0303(12) {angstrom}, b = 6.5098(13) {angstrom}, c = 8.3072(16) {angstrom}, {alpha} = 112.082(2){sup o}, {beta} = 96.667(3){sup o}, {gamma} = 108.792(3){sup o}; Tc-Tc = 2.150(1) {angstrom}] is formed as an intermediate in the reaction at 100 C. Technetium trichloride is formed above 250 C and is isostructural with its rhenium homologue. The structure consists of Tc{sub 3}Cl{sub 9} clusters [R{sub 3}m; a = b = 10.1035(19) {angstrom}, c = 20.120(8) {angstrom}], and the Tc-Tc separation is 2.444(1) {angstrom}. Calculations on TcX{sub 3} (X = Cl, Br) have confirmed the stability of TcCl{sub 3} and suggest the existence of a polymorph of TcBr{sub 3} with the ReBr{sub 3} structure.

Poineau, Frederic; Johnstone, Erik V.; Weck, Philippe F.; Kim, Eunja; Forster, Paul M.; Scott, Brian L.; Sattelberger, Alfred P.; Czerwinski, Kenneth R. (UNLV); (LANL)

2010-12-07T23:59:59.000Z

277

Single-crystal X-ray and neutron diffraction investigations of the temperature dependence of the structure of the Tc = 10 K organic superconductor. kappa. -(ET) sub 2 Cu(NCS) sub 2. [where ET or BEDT-TTF = bis(ethylenedithio)tetrathiafulvalene, C sub 10 H sub 8 S sub 8  

Science Conference Proceedings (OSTI)

The crystal structure of {kappa}-(ET){sub 2}Cu(NCS){sub 2} (ET or BEDT-TTF = bis(ethylenedithio)tetrathiafulvalene, C{sub 10}H{sub 8}S{sub 8}) has been examined by single-crystal neutron and X-ray diffraction at temperatures between 298 and 15 K. Comparison of the low temperature ordered structures determined by use of X-ray and neutron diffraction with the previously reported crystallographically disordered room temperature X-ray structure indicates the avoidance of close H{center dot}{center dot}{center dot}H contacts as the reason for the conformational disorder of the terminal ethylene groups of the ET molecules at high temperatures. The space group is monoclinic noncentrosymmetric P2{sub 1}, Z = 2. Unit cell parameters at 118 K are a = 16.359(4), b = 8.418(2), c = 12.855(3) {angstrom}, {beta} = 111.21(2){degree}, and V = 1650.3(7) {angstrom}{sup 3}; at 15 K, a = 16.373(5), b = 8.375(3), c = 12.775(6) {angstrom}, {beta} = 111.45(4){degree}, and V = 1630(1) {angstrom}{sup 3}. The interlayer spacing a {center dot} sin {beta} remains constant upon cooling from 298 to 15 K even though the a axis increases slightly in length.

Schultz, A.J.; Beno, M.A.; Geiser, U.; Wang, H.H.; Kini, A.; Williams, J.M. (Argonne National Lab., IL (United States)); Myunghwan Whangbo (North Carolina State Univ., Raleigh (United States))

1991-10-01T23:59:59.000Z

278

Determination of the first ionization potential of technetium  

Science Conference Proceedings (OSTI)

The first ionization potential (IP) of technetium (Tc) has been determined by evaluating Rydberg convergences toward the first ionization potential as well as toward two low-lying excited states of the singly charged Tc ion. The Rydberg states were excited and detected by applying multiphoton resonance ionization mass spectrometry (RIMS) on the long-lived isotope {sup 99g}Tc using a three-color excitation scheme. The observed Rydberg convergences yield a result for the first ionization potential of Tc V{sub IP}(Tc)=7.119380(32) eV. This precise value for V{sub IP}(Tc) is somewhat lower than the so far published data of 7.23 eV or 7.28 eV, dating back to the 1950s.

Mattolat, C.; Gottwald, T.; Raeder, S.; Rothe, S.; Schwellnus, F.; Wendt, K.; Thoerle-Pospiech, P.; Trautmann, N. [Institut fuer Physik, Johannes Gutenberg-Universitaet Mainz, D-55099 Mainz (Germany); Institut fuer Kernchemie, Johannes Gutenberg-Universitaet Mainz, D-55099 Mainz (Germany)

2010-05-15T23:59:59.000Z

279

Technetium-99m generator system  

DOE Patents (OSTI)

A {sup 99}Mo/{sup 99m}Tc generator system includes a sorbent column loaded with a composition containing {sup 99}Mo. The sorbent column has an effluent end in fluid communication with an anion-exchange column for concentrating {sup 99m}Tc eluted from the sorbent column. A method of preparing a concentrated solution of {sup 99m}Tc includes the general steps of: (a) providing a sorbent column loaded with a composition containing {sup 99}Mo, the sorbent column having an effluent end in fluid communication with an anion-exchange column; (b) eluting the sorbent column with a salt solution to elute {sup 99m}Tc from the sorbent and to trap and concentrate the eluted {sup 99m}Tc on the ion-exchange column; and (c) eluting the concentrated {sup 99m}Tc from the ion-exchange column with a solution comprising a reductive complexing agent. 1 fig.

Mirzadeh, S.; Knapp, F.F. Jr.; Collins, E.D.

1998-06-30T23:59:59.000Z

280

Electronic and Molecular Structures of trans-Dioxotechnetium(V) Polypyridyl Complexes in the Solid State  

Science Conference Proceedings (OSTI)

The structures of novel Tc(V) complexes trans-[TcO2(py)4]Cl.2H2O (1a), trans-[TcO2(pic)4]Cl.2H2O (2a) and trans-[TcO2(pic)4]BPh4 (2b) were determined by X-ray crystallography, and their spectroscopic characteristics were investigated by emission spectroscopy and atomic scale calculations. The cations adopt a tetragonally distorted octahedral geometry, with a trans orientation of the apical oxo groups. trans-[TcO2(pic)4]BPh4 has an inversion center located on technetium; however, for trans-[TcO2(py)4]Cl.2H2O and trans-[TcO2(pic)4]Cl.2H2O, a strong H-bond formed by only one of the oxo substituents introduces an asymmetry in the structure, resulting in inequivalent trans Tc-N and Tc=O distances. Upon 415 nm excitation at room temperature, the complexes exhibited broad, structureless luminescences with emission maxima at approximately 710 nm (1a) and 750 nm (2a, 2b). Like the Re(V) analogs, the Tc(V) complexes luminesce from a 3Eg excited state. Upon cooling the samples from 278 K to 8 K, distinct vibronic features appear in the spectra of the complexes along with increases in emission intensities. The low temperature emission spectra display the characteristic progressions of the symmetric O=Tc=O and the Tc-L-stretching modes. Spectra calculated using a time-dependent theoretical approach are in good agreement with the experimental spectra. The discovery of luminescence from the trans-dioxotechnetium(V) complexes provides the first opportunity to directly compare fundamental luminescence properties of second- and third-row d2 metal-oxo congeners.

Chatterjee, Sayandev; Del Negro, Andrew S.; Wang, Zheming; Edwards, Matthew K.; Skomurski, Frances N.; Hightower, Sean E.; Krause, Jeanette A.; Twamley, Brendan; Sullivan, Brian P.; Reber, Christian; Heineman, William R.; Seliskar, Carl J.; Bryan, Samuel A.

2011-06-20T23:59:59.000Z

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Advanced Distribution Automation Technical Assessments  

Science Conference Proceedings (OSTI)

This 2008 progress report on advanced distribution technical assessments focused on the International Electrotechnical Commission (IEC) TC-57 body of standards.

2008-12-19T23:59:59.000Z

282

Eosinophil and T cell markers predict functional decline in COPD patients  

E-Print Network (OSTI)

E Walter 6 , Christine H Wendt 3 , Gail G Weinmann 10 ,walterb@bu.edu; Christine H Wendt - wendt005@tc.umn.edu;

2009-01-01T23:59:59.000Z

283

Superconductivity: Past, present, and future  

DOE Green Energy (OSTI)

This paper provides an overview of superconductor research and development activities, with emphasis on the potential of high-{Tc} materials for future applications. Superconductor applications are grouped under the following categories: electronics/instrumentation, bulk material/castings, research devices, industrial/commercial, electric power, and transportation/propulsion. Near-term applications are typically based on thin film and cast forms of high-{Tc} materials, while large-scale applications requiring long lengths of wire are considered intermediate to long term. As a major side benefit of high-{Tc} superconductor research, renewed interest is being focused on the use of low-{Tc} materials for large-scale applications.

Uherka, K.L.

1992-01-01T23:59:59.000Z

284

Superconductivity: Past, present, and future  

DOE Green Energy (OSTI)

This paper provides an overview of superconductor research and development activities, with emphasis on the potential of high-{Tc} materials for future applications. Superconductor applications are grouped under the following categories: electronics/instrumentation, bulk material/castings, research devices, industrial/commercial, electric power, and transportation/propulsion. Near-term applications are typically based on thin film and cast forms of high-{Tc} materials, while large-scale applications requiring long lengths of wire are considered intermediate to long term. As a major side benefit of high-{Tc} superconductor research, renewed interest is being focused on the use of low-{Tc} materials for large-scale applications.

Uherka, K.L.

1992-06-01T23:59:59.000Z

285

Secondary ? Phase Evolution in the Isothermal Compression and ...  

Science Conference Proceedings (OSTI)

Heat treatments were also carried out during which the TC8 titanium alloy ... FEM Analysis of Pipe Reduction Forming Process for Increasing of Wall Thickness.

286

2000 TMS Fall Meeting: Hume-Rothery Symposium Celebration  

Science Conference Proceedings (OSTI)

... and passive magnetic refrigeration materials; and practical ceramic superconductors with high TC and JC values; High-temperature thermochemistry of alloys.

287

POWGEN - The Powder Diffractometer at SNS - ORNL Neutron Sciences  

NLE Websites -- All DOE Office Websites (Extended Search)

but are not limited to, structural studies of magnetic materials such as high-Tc superconductors, metal-insulator phase transitions, charge and orbital ordering transitions, and...

288

The adaptive model of thermal comfort and energy conservation in the built environment  

E-Print Network (OSTI)

ASHRAE’s Technical Committee (TC 2.1) in charge of Standard 55 initiated a programme of field validation experiments in vari- ous climate zones

de Dear, Richard; Brager, Gail

2001-01-01T23:59:59.000Z

289

Enhancing Price Response Programs through Auto-DR: California's 2007 Implementation Experience  

E-Print Network (OSTI)

that a larger number of customers would be inclined toAuto-DR to customers. GEP held a number of TC training

Wikler, Greg

2008-01-01T23:59:59.000Z

290

Magnetic Phase Transition and Spin Wave Excitations in the ...  

Science Conference Proceedings (OSTI)

... An energy scan through the spin wave excitations ... The intensity above TC comes from paramagnetic spin ... quickly move to higher energies and out ...

2013-03-14T23:59:59.000Z

291

ME346A Introduction to Statistical Mechanics Wei Cai Stanford University Win 2011 Handout 12. Ising Model  

E-Print Network (OSTI)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.2 Monte Carlo simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4 is destroyed by thermal fluc- tuation. Hence the 2D Ising model has a critical temperature Tc, belo

Cai, Wei

292

Technische Universitt Mnchen Fakultt fr Informatik  

E-Print Network (OSTI)

be estimated using =QL(C1T+C2E). This formula is defined by the MIL-HDBK-217 Standard [28] to estimate

Cengarle, María Victoria

293

--No Title--  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

waste streams generated and potential waste streams that might be generated. 9975, 9977 and 9978 Annual Maintenance and Testing Savannah River Site Aiken South Carolina TC - A...

294

Reduction of 1/fnoise in high-T dc superconducting quantum ...  

Reduction of 1/fnoise in high-Tc dc superconducting quantum interference devices cooled in an ambient magnetic ?eld E. Dantsker, S. Tanaka, P.-A?.

295

Argonne Chemical Sciences & Engineering - Nuclear & Environmental...  

NLE Websites -- All DOE Office Websites (Extended Search)

99Mo99mTc. Process Simulation and Equipment Design Application of integrated chemical engineering and separations chemistry to develop, model, design, and demonstrate...

296

All Physical Measurement Laboratory (PML) Events  

Science Conference Proceedings (OSTI)

... more. Handbook 130 - Price Verification September 18-19, 2013 ... ISO)/TC 172/SC 1 Optics and Photonics/Fundamental Standards September 24-26 ...

2011-10-18T23:59:59.000Z

297

All NIST Events  

Science Conference Proceedings (OSTI)

... more. Handbook 130 - Price Verification September 18-19, 2013 ... ISO)/TC 172/SC 1 Optics and Photonics/Fundamental Standards September 24-26 ...

2010-11-04T23:59:59.000Z

298

--No Title--  

NLE Websites -- All DOE Office Websites (Extended Search)

centrifuge. The solution is captured and analyzed. Operation of Centrifugal Hydraulic Conductivity Equipment Savannah River Site Aiken South Carolina TC-W-2011-0067,...

299

MEE 452: Example 3-2 ShellShell--andand--Tube Heat Exchanger Analysis:Tube Heat Exchanger Analysis  

E-Print Network (OSTI)

minmaxminmax min ,;; ,min)()( C C NTU C UA NTU TC q q q CCCcmCcmC UA CHCpCHpH #12;Tube arrangement in shell

Kostic, Milivoje M.

300

Initial Single Shell Tank System Performance Assessment for ...  

• Radioactive Decay ... (low recharge rate) ... Maximum Contaminant Level a Exposure Scenarios b Beta- Photon Tc-99 I-129 Cr All-Pathways Farmer

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

4th Annual DOE-ERSP PI Meeting: Abstracts  

E-Print Network (OSTI)

is resolving critical Hanford and basic subsurface scienceTc-99, and uranium on the Hanford site. Recently, the systemIFRC) 101 Hanford IFRC—

Hazen, Terry C.

2009-01-01T23:59:59.000Z

302

Supcon precursor CHI 2& 3d, PCA example  

Science Conference Proceedings (OSTI)

... 64x64) quantitated (JEOL) electron probe maps of ceramic superconductor precursor material. ... of Bi-Sr-Ca-Cu-O High Tc Superconductors with X ...

303

4th Annual DOE-ERSP PI Meeting: Abstracts  

E-Print Network (OSTI)

for Enhanced Transport of Plutonium in the Vadose Zone FredTc), uranium (U), and plutonium (Pu). Microenvironments areof Bioreduced Uranium and Plutonium Session: SLAC SFA (

Hazen, Terry C.

2009-01-01T23:59:59.000Z

304

ARTICLE: Dissimilar Behavior of Technetium and Rhenium in ... - TMS  

Science Conference Proceedings (OSTI)

May 25, 2007 ... To better understand the redox behavior of Tc and Re in nuclear waste glass, a series of glasses were prepared under different redox ...

305

EMSL: Science Highlights  

NLE Websites -- All DOE Office Websites (Extended Search)

July 31, 2013 By employing nano zerovalent iron to promote sulfide generation in technetium (Tc)-contaminated groundwater, scientists offer a fundamental geochemical...

306

Sandia National Labs: PCNSC: Departments: Radiation-Solid Interactions...  

NLE Websites -- All DOE Office Websites (Extended Search)

Technetium Symbol: Tc Atomic Number: 43 Atomic Weight (Average): 98.9062 Mass (amu) no stable isotopes Abundance no stable isotopes IBA Techniques to Analyze: HIBS (Heavy Ion...

307

Technetium Sorption by Cementitious Materials Under Reducing Conditions  

Science Conference Proceedings (OSTI)

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.

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

308

EMSL: News: Science Highlights  

NLE Websites -- All DOE Office Websites (Extended Search)

July 31, 2013 By employing nano zerovalent iron to promote sulfide generation in technetium (Tc)-contaminated groundwater, scientists offer a fundamental geochemical...

309

com  

Science Conference Proceedings (OSTI)

... It was proposed by Anderson over two decades ago to explain the transition to unconventional superconductivity seen in the high Tc cuprates [1 ...

310

Installation and Commissioning Automated Demand Response Systems  

E-Print Network (OSTI)

Information System or Energy Management System (EMCS) so aimplementation in energy management systems. This effort isTC): Trained energy management control system vendors were

Kiliccote, Sila; Global Energy Partners; Pacific Gas and Electric Company

2008-01-01T23:59:59.000Z

311

Non-Fermi Liquid Regimes and Superconductivity in the Low Temperature Phase Diagrams of Strongly Correlated d- and f-Electron Materials  

E-Print Network (OSTI)

Kobayashi, A. Hori, S. Fukushima, H. Hidaka, H. Kotegawa, T.228. T.C. Kobayashi, S. Fukushima, H. Hidaka, K. Kotegawa,

Brian Maple, M.; Baumbach, Ryan E.; Butch, Nicholas P.; Hamlin, James J.; Janoschek, Marc

2010-01-01T23:59:59.000Z

312

Project: Fire Research Grants and Cooperative Agreements  

Science Conference Proceedings (OSTI)

... Reviewers are asked to assess the budget against the proposed work to ... ASTM E1355 and ISO (ISO/TC 92/SC 4) have published guidance ...

2012-12-27T23:59:59.000Z

313

Symposium K: Composites and Hybrid Materials  

Science Conference Proceedings (OSTI)

Aug 3, 2010 ... The Tc was determined by electrical resistivity and magnetization to be ... The introduction of composite materials are welcomed in the market ...

314

Two Line Subject Title One Line Title  

NLE Websites -- All DOE Office Websites (Extended Search)

Technology CSC Fouling RefractoryTC Wear RSC Fouling Morgantown, WVA March 5, 2013 2 Industry Challenges * Carbon feedstock flexibility (coal, low rank coal, petcoke, biomass)...

315

Techniques for assessing the performance of in situ bioreduction and immobilization of metals and radionuclides in contaminated subsurface environments  

E-Print Network (OSTI)

Immobilization of Metals and Radionuclides in Contaminatedsubsurface metals and radionuclides. Research within DOE’stoxic metals and radionuclides (e.g. Cr, U, Tc, Co) into a

2004-01-01T23:59:59.000Z

316

Dual molecular imaging for targeting metalloproteinase activity and apoptosis in atherosclerosis: molecular imaging facilitates understanding of pathogenesis  

E-Print Network (OSTI)

HC), who underwent dual radionuclide imaging with 99m Tc-16:753–62. ) Key Words: Radionuclides Æ SPECT Æ vulnerablevivo imaging protocols. Radionuclide imaging was performed

2009-01-01T23:59:59.000Z

317

Partitioning of Rhenium during Melting of Low-activity Waste Glass ...  

Science Conference Proceedings (OSTI)

Abstract Scope, Volatile loss of radioactive 99Tc to offgas is a concern with processing the low-activity waste (LAW) at Hanford site in to a ...

318

YBCO Processing and Reliability Related Issues  

Science Conference Proceedings (OSTI)

Oct 18, 2010 ... In coils exited with alternating current, such as transformer, current limiter, ... Micro-scale current distribution in high Tc superconductor tape can ...

319

SPLIDHOM: a method for homogenization of daily temperature observations1 Olivier Mestre1  

E-Print Network (OSTI)

Aguilar, E., T.C. Peterson, P. Ramírez Obando, R. Frutos, J.A. Retana, M. Solera, I., González13 Santos, R

Prieur, Clémentine

320

Microstructure Control of Ni Base Alloys with High Volume Fraction ...  

Science Conference Proceedings (OSTI)

hypo-stoichiometric composition of Ni3V, formation of "multi- variant structure ... reasons; one is the high TC (1318 K) at its stoichiometric composition [1, 2], and ...

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Dissolution of Technetium(IV) Oxide by Natural and Synthetic Organic Ligands Under both Reducing and Oxidizing Conditions  

SciTech Connect

Technetium-99 (Tc) in nuclear waste is a significant environmental concern due to its long half-life and high mobility in the subsurface. Reductive precipitation of Tc(IV) oxides [TcO2(s)] is an effective means of immobilizing Tc, thereby impeding its migration in groundwater. However, TcO2(s) is subject to dissolution by oxidants and/or complexing agents. In this study we ascertain the effects of a synthetic organic ligand, ethylenediaminetetraacetate (EDTA), and two natural humic isolates on the dissolution and solubility of Tc(IV) oxides. Pure synthetic TcO2(s) (0.23 mM) was used in batch experiments to determine dissolution kinetics at pH ~6 under both reducing and oxidizing conditions. All organic ligands were found to enhance the dissolution of Tc(IV) oxides, increasing their solubility from ~10-8 M (without ligands) to 4 10-7 M under strictly anoxic conditions. Reduced Tc(IV) was also found to re-oxidize rapidly under oxic conditions, with an observed oxidative dissolution rate approximately an order of magnitude higher than that of ligand-promoted dissolution under reducing conditions. Significantly, oxidative dissolution was inhibited by EDTA but enhanced by humic acid compared with experiments without any complexing agents. The redox functional properties of humics, capable of facilitating intra-molecular electron transfer, may account for this increased oxidation rate under oxic conditions. Our results highlight the importance of complex interactions for the stability and mobility of Tc, and thus for the long-term fate of Tc in contaminated environments.

Gu, Baohua [ORNL; Dong, W. [Lawrence Berkeley National Laboratory (LBNL); Liang, Liyuan [ORNL; Wall, Nathalie [Washington State University

2011-01-01T23:59:59.000Z

322

MOLECULAR MECHANISM OF MICROBIAL TECHNETIUM REDUCTION FINAL REPORT  

Science Conference Proceedings (OSTI)

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.

DiChristina, Thomas J. [Georgia Tech

2013-04-30T23:59:59.000Z

323

Numerical test of Polyakov loop models in high temperature SU(2)  

E-Print Network (OSTI)

We study the compatibility of effective mean-field models of the Polyakov loop for the deconfined phase of SU(N) pure gauge theories with lattice data obtained for the case of SU(2), in the temperature range T_c - 4.8 T_c.

Roberto Fiore; Pietro Giudice; Alessandro Papa

2004-09-07T23:59:59.000Z

324

Public Interest Energy Research (PIER) Program FINAL PROJECT REPORT  

E-Print Network (OSTI)

using most fuels, including: digester, biomass, landfill gas, flare gas, diesel, natural gas, propane to the cold temperature, TC. · Reversible isothermal compression of the gas at the cold temperature, TC compression of the gas. (D to A on Figure 2, 4 to 1 in Figure 3) Once again, we assume the piston

325

Technetium radiodiagnostic fatty acids derived from bisamide bisthiol ligands  

DOE Patents (OSTI)

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.

Jones, Alun G. (Newton Centre, MA); Lister-James, John (Wellesley, MA); Davison, Alan (Needham, MA)

1988-05-24T23:59:59.000Z

326

Tropical Cyclone Contribution to Rainfall over Australia  

Science Conference Proceedings (OSTI)

Tropical cyclone (TC) rainfall over the Australian continent is studied using observations from 41 TC seasons 1969/70 to 2009/10. A total of 318 storms, whose centers either crossed the coastline or were located within 500?km of the coast, are ...

Richard A. Dare; Noel E. Davidson; John L. McBride

2012-11-01T23:59:59.000Z

327

Electric charge susceptibility in 2+1 flavour QCD on an anisotropic lattice  

E-Print Network (OSTI)

The FASTSUM Collaboration presents its first results for the electric charge susceptibility in QCD using 2+1 dynamical flavours of Wilson quark on anisotropic lattices. Spatial volumes of (2.94 fm)^3 are used at fixed cut-off with temperatures ranging from below T_c to ~2 T_c.

Pietro Giudice; Gert Aarts; Chris Allton; Alessandro Amato; Simon Hands; Jon-Ivar Skullerud

2013-09-24T23:59:59.000Z

328

A Rapid Loss Index for Tropical Cyclone Disasters in China  

Science Conference Proceedings (OSTI)

Disaster emergency response needs rapid estimation on disaster loss. In China it is of great importance to develop a loss index for rapidly assessing tropical cyclone (TC) disaster loss. In this paper, a new composite loss index for TC landing on China ... Keywords: Tropical Cyclone, Disaster, Loss Index, Rapid Loss Assessment

Ying Li; Weihua Fang

2012-06-01T23:59:59.000Z

329

The Retrieval of Asymmetric Tropical Cyclone Structures Using Doppler Radar Simulations and Observations with the Extended GBVTD Technique  

Science Conference Proceedings (OSTI)

The ground-based velocity track display (GBVTD) technique is extended to two Doppler radars to retrieve the structure of a tropical cyclone’s (TC’s) circulation. With this extension, it is found that the asymmetric part of the TC radial wind ...

Yu-Chieng Liou; Tai-Chi Chen Wang; Wen-Chau Lee; Ya-Ju Chang

2006-04-01T23:59:59.000Z

330

Possible Linkage between the Monsoon Trough Variability and the Tropical Cyclone Activity over the Western North Pacific  

Science Conference Proceedings (OSTI)

The present study investigates the influence of the monsoon trough (MT) on the interannual variability of tropical cyclone (TC) activity over the western North Pacific during July–November for the period 1979–2007. It is shown that the TC activity ...

Liang Wu; Zhiping Wen; Ronghui Huang; Renguang Wu

2012-01-01T23:59:59.000Z

331

UNECE TIMBER COMMITTEE Market Discussions, 3-4 October 2006  

E-Print Network (OSTI)

's discussions · TC Market Statement · Market press release · Information to joint TC and European ForestryUNECE TIMBER COMMITTEE Market Discussions, 3-4 October 2006 Photo: NTC Photo: Stora Enso Photo: Stora Enso UNECE Timber Committee Market Discussions Theme: "China's influence on forest products

332

Process for the extraction of technetium from uranium  

DOE Patents (OSTI)

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.

Gong, Cynthia-May S. (San Mateo, CA); Poineau, Frederic (Las Vegas, NV); Czerwinski, Kenneth R. (Las Vegas, NV)

2010-12-21T23:59:59.000Z

333

An auto-review tool for model-based testing of safety-critical systems  

Science Conference Proceedings (OSTI)

Verification of Test Procedures and Test Cases (TP, TC) is an important process stage for fulfilling the RTCA/DO-178B/C compliance objective while developing software for safety critical flight control systems. Correctness of these results, their requirement ... Keywords: Control System, Functional Coverage, Metrics, Model Based Testing, Qualification, Review, TP/TC

Atit Mishra, Manjunatha Rao, Chethan CU, Vanishree Rao, Yogananda Jeppu, Nagaraj Murthy

2013-07-01T23:59:59.000Z

334

Critical Temperature for the Nuclear Liquid-Gas Phase Transition  

E-Print Network (OSTI)

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).

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

335

The Analysis of Tropical Cyclone Tracks in the Western North Pacific through Data Mining. Part II: Tropical Cyclone Landfall  

Science Conference Proceedings (OSTI)

This is the second paper of a two-part series of papers on the analysis of tropical cyclone (TC) tracks in the western North Pacific Ocean. In this paper, TC landfalls in the South China Sea and western North Pacific basins are investigated ...

Wei Zhang; Yee Leung; Johnny C. L. Chan

2013-06-01T23:59:59.000Z

336

2.2 Optimum Yield and Options for Area-Specific Total Allowable Catches (TACs)..4  

E-Print Network (OSTI)

This document summarizes the options under consideration for the 2005 specifications for the Atlantic herring fishery. It supplements the May 5, 2004 Herring PDT/TC Report and includes additional background information and analyses provided by the PDT/TC. The relative risk assessment presented in this document has been updated and replaces

unknown authors

2005-01-01T23:59:59.000Z

337

Tropical Cyclone Kinematic Structure Retrieved from Single-Doppler Radar Observations. Part II: The GBVTD-Simplex Center Finding Algorithm  

Science Conference Proceedings (OSTI)

This paper is the second of a series and focuses on developing an algorithm to objectively identify tropical cyclone (TC) vorticity centers using single-Doppler radar data. The first paper dealt with the formulation of a single-Doppler radar TC ...

Wen-Chau Lee; Frank D. Marks Jr.

2000-06-01T23:59:59.000Z

338

A novel, direct spatio-temporal approach for analyzing fMRI experiments  

Science Conference Proceedings (OSTI)

We introduce a novel approach to couple temporal similarity with spatial neighborhood information. This is achieved by concatenating the K nearest, spatially contiguous neighbors of a pixel time-course (TC) of T time-instances. This produces a new TC ... Keywords: Concatenation, Median filtering, Smoothing, Spatial similarity, Spatio-temporal method, Temporal similarity

R. L. Somorjai; R. Vivanco; N. Pizzi

2002-05-01T23:59:59.000Z

339

Cobalt Fischer-Tropsch catalysts having improved selectivity  

DOE Patents (OSTI)

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.

Miller, James G. (Pearl River, NY); Rabo, Jule A. (Armonk, NY)

1989-01-01T23:59:59.000Z

340

Motion and Evolution of Binary Tropical Cyclones in a Coupled Atmosphere–Ocean Numerical Model  

Science Conference Proceedings (OSTI)

The interaction of binary tropical cyclones (TC) is investigated using a coupled TC-ocean movable nested-grid model. The model consists of an eight-layer atmospheric model in the sigma coordinate system and a three-layer primitive equation ocean ...

Alexander I. Falkovich; Alexander P. Khain; Isaac Ginis

1995-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Charmonium properties in the quark-gluon plasma  

E-Print Network (OSTI)

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.

M. B. Oktay; M. J. Peardon; J. I. Skullerud; G. Aarts; C. R. Allton

2007-10-15T23:59:59.000Z

342

Microsoft Word - huang.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

required for classifying a cloud as ice-over-water for the entire 0.3 box is: 100% ice phase, Tc < 273K, Tw-Tc > 8 K and MWR LWP (LWP MW ) > 0.0 gm -2 . Multilayered clouds...

343

Bisamide bisthiol compounds useful for making technetium radiodiagnostic renal agents  

DOE Patents (OSTI)

A radiodiagnostic bisamido-bisthio ligand useful for producing Tc-labelled radiodiagnostic renal 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 kidney for diagnosis of kidney disfunction.

Davison, Alan (Needham, MA); Brenner, David (Cambridge, MA); Lister-James, John (Cambridge, MA); Jones, Alun G. (Newton Centre, MA)

1987-06-16T23:59:59.000Z

344

Effect of partial substitution of Ni by Co on the magnetic and magnetocaloric properties of Ni50Mn35In15 Heusler alloy  

E-Print Network (OSTI)

/ferromagnetic transition (T ¼ 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)] should by physical properties measurements systems (PPMS) by Quantum Design, Inc. For each measurement, the sample

Adams, Philip W.

345

Energy Production, Frictional Dissipation, and Maximum Intensity of a Numerically Simulated Tropical Cyclone  

Science Conference Proceedings (OSTI)

A tropical cyclone (TC) viewed as a heat engine converts heat energy extracted from the ocean into the kinetic energy of the TC, which is eventually dissipated due to surface friction. Since the energy production rate is a linear function while ...

Yuqing Wang; Jing Xu

2010-01-01T23:59:59.000Z

346

Annual Report, 2009 THE COLLEGE OF SCIENCE  

E-Print Network (OSTI)

-2009 Jordan Bronston (TC) Imee Cambronero (GAPSA) Erick Elgin (UMC) Jennifer McCabe (UMD) Dustin Norman (TC Hernandez Jeanne Hvass William Klein Timothy Klinkner Richard Kottke Sarah Leiverenz Daniel Lippert Gary Patrick Eckman Juan Hernandez Donald Hoffman Jeanne Hvass William Klein Richard Kottke Daniel Lippert Gary

347

DuraLith Geopolymer Low Temperature Waste Forms  

Hanford Low-Activity Waste (LAW), mol/L Minor constituents: 129I, 99Tc (HSW), 99Tc, 137Cs (LAW) heavy and other metals Na OH NO 3 Al TOC Si K CO 3 Cl NO 2 PO 4 SO 4

348

Quarterly Journal of the Royal Meteorological Society Q. J. R. Meteorol. Soc. 136: 11911204, July 2010 Part A Effect of improving representation of horizontal and vertical  

E-Print Network (OSTI)

led to a simple derivation of fw by evaluating the gradient of the best fit line. We also include for this comparison experiment, with their abbreviations. Tripleclouds single- TC(LP16) Calculation using the LP. Using a fractional standard deviation of 0.75 gives virtually identical TOA CRFs to the TC(LP16) method

Hogan, Robin

349

Preparation, magnetism and electronic structures of cadmium technetates  

SciTech Connect

Due to the scarcity of the artificial transition metal technetium, studies on the solid-state properties of its oxides have been rarely undertaken. We have prepared a new technetium metal oxide system that include the 4d metal in two separate oxidation states and have characterized the new phases' crystal structures and magnetic properties. One phase Cd{sub 2}Tc{sub 2}O{sub 7} was prepared through the vapor-phase reaction of the heptaoxide Tc{sub 2}O{sub 7} with Cd metal; the other phase, CdTcO{sub 3}, was prepared through the solid state reaction of TcO{sub 2} with CdO. High-resolution synchrotron X-ray diffraction was used to characterize the crystal structures and stoichiometries of the two new technetates. At room temperature, Cd{sub 2}Tc{sub 2}O{sub 7} takes on the pyrochlore structure with a = 10.18118(1) {angstrom}, space group, Fd{bar 3}m and Z = 8. CdTcO{sub 3} has the GdFeO{sub 3}-type structure with space group Pbnm and a = 5.38881(1) {angstrom}, b = 5.46504(1) {angstrom}, and c = 7.71272(1){angstrom}. The magnetic susceptibility behavior of Cd{sub 2}Tc{sub 2}O{sub 7} is strikingly similar to that observed in Cd{sub 2}Re{sub 2}O{sub 7}, with a broad transition close to 200 K. The magnetic behavior of Cd{sub 2}Tc{sub 2}O{sub 7} is also compared with that of isomorphous Pb{sub 2}Tc{sub 2}O{sub 6} and Bi{sub 2}Tc{sub 2}O{sub 7}, also presented in this study. The magnetic susceptibility of the distorted perovskite phase CdTcO{sub 3} is weakly temperature dependent, with no obvious signs of an ordering transition below 300 K. Electronic band structure calculations performed to simulate electronic densities of states indicate that the Fermi level is located in a 't{sub 2g}' band of the octahedrally coordinated Tc cations and therefore metallic conductivity in both CdTcO{sub 3} and Cd{sub 2}Tc{sub 2}O{sub 7}.

Rodriguez, Efrain E.; Poineau, Frédéric; Llobet, Anna; Thompson, Joe D.; Seshadri, Ram; Cheetham, Anthony K. (UNLV); (NIST); (UCSB); (Cambridge); (LANL)

2012-02-07T23:59:59.000Z

350

Corrosion of Metal Inclusions In Bulk Vitrification Waste Packages  

SciTech Connect

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.

Bacon, Diana H.; Pierce, Eric M.; Wellman, Dawn M.; Strachan, Denis M.; Josephson, Gary B.

2006-07-31T23:59:59.000Z

351

Identification of Non-Pertechnetate Species in Hanford Tank Waste, Their Synthesis, Characterization, and Fundamental Chemistry  

Science Conference Proceedings (OSTI)

Technetium, as pertechnetate (TcO4 -), is a mobile species in the environment. This characteristic, along with its long half-life, (99Tc, t1/2 = 213,000 a) makes technetium a major contributor to the long-term hazard associated with low level waste (LLW) disposal. Technetium partitioning from the nuclear waste at DOE sites may be required so that the LLW forms meet DOE performance assessment criteria. Technetium separations assume that technetium exists as TcO4 - in the waste. However, years of thermal, chemical, and radiolytic digestion in the presence of organic material, has transformed much of the TcO4 - into unidentified, stable, reduced, technetium complexes. To successfully partition technetium from tank wastes, it will be necessary to either remove these technetium species with a new process, or reoxidize them to TcO4 - so that conventional pertechnetate separation schemes will be successful.

Schroeder, Norman C.; Ashley, Kenneth R.; Olivares, Jose A.

2004-06-15T23:59:59.000Z

352

Technitium Management at the Hanford Site  

SciTech Connect

The Hanford tank waste contains -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 -212,000 years and, in its predominant pertechnetate (TcO{sub 4}) fonn, 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 immobitize the Tc-99 in a waste fonn 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 tlowsheet 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 fonns for technetium containing streams.

Robbins, Rebecca A.

2013-08-15T23:59:59.000Z

353

Softening and Broadening of the Zone Boundary Magnons in Pr0.63Sr0.37MnO3  

E-Print Network (OSTI)

We have studied the spin dynamics in Pr0.63Sr0.37MnO3 above and below the Curie temperature TC = 301 K. Three distinct new features have been observed: a softening of the magnon dispersion at the zone boundary for T < TC, significant broadening of the zone boundary magnons as T ? TC, and no evidence for residual spin-wave like excitations just above TC. The results are inconsistent with double exchange models that have been successfully applied to higher TC samples, indicating an evolution of the spin system with decreasing TC. Typeset using REVTEX 1 The revival in the study of manganites has led to a reexamination of the unique coupling between magnetism and charge transport in these materials. We focus on perovskite manganites with a transition from a high temperature paramagnetic insulator to a low temperature ferromagnetic metal at the Curie temperature TC. The samples that exhibit this behavior have been partially hole doped away from a parent antiferromagnetic insulator,

H. Y. Hwang; P. Dai; S-w. Cheong; D. A. Tennant; H. A. Mook

1997-01-01T23:59:59.000Z

354

Perspectives: Superconductivity The Race to Beat the Cuprates  

E-Print Network (OSTI)

Superconductors are materials that lose all electrical resistance below a specific temperature, known as the critical temperature (Tc). Large-scale applications, for example, in superconducting cables, require materials with high (ideally room temperature) Tc’s, but most superconductors have very low Tc’s, typically a few kelvin or less. The discovery of a layered copper oxide (cuprate) with a Tc of 38 K (see panel A in the first figure) in 1986 [1] raised hopes that high temperature superconductivity might be within reach. By 1993, cuprate Tc’s of 133 K at ambient pressure had been achieved [2,3], but efforts to further increase cuprate Tc’s have not been fruitful. Two reports by Schön et al. [4,5] in the current issue of science –applying a similar technique to two very different materials – drastically alter the perception that planar cuprates are the only route to high temperature superconductivity. Schön et al. use a field-effect device introduced in previous investigations to transform insulating compounds into metals [6]. On page 2430, they show that copper oxide materials with a ladder structure (panel B in the first figure) can be superconducting [4], even without the high pressure applied in previous studies of related compounds. Even more spectacularly, they report on page 2432 that the Tc of a noncuprate molecular materials, C60 (panel C in the first figure), known before to superconduct at 52 K upon hole doping [7], can be raised by hole doping with intercalated CHBr3 to 117 K [5], not far from the cuprate record. Simple extrapolations suggest that the Tc could be increased even further, effectively ending the dominance of cuprates in the high-Tc arena.

Elbio Dagotto

2001-01-01T23:59:59.000Z

355

Ultrafast Enhancement of Ferromagnetism via Photoexcited Holes inGaMnAs  

SciTech Connect

We report on the observation of ultrafast photo-enhanced ferromagnetism in GaMnAs. It is manifested as a transient magnetization increase on a 100-ps time scale, after an initial sub-ps demagnetization. The dynamic magnetization enhancement exhibits a maximum below the Curie temperature {Tc} and dominates the demagnetization component when approaching {Tc}. We attribute the observed ultrafast collective ordering to the p-d exchange interaction between photoexcited holes and Mn spins, leading to a correlation-induced peak around 20K and a transient increase in {Tc}.

Wang, J.; Cotoros, I.; Dani, K.M.; Liu, X.; Furdyna, J.K.; Chemla, D.S.

2007-02-17T23:59:59.000Z

356

Wavelet analysis of event by event fluctuations  

E-Print Network (OSTI)

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.

P. Manimaran; Prasanta K. Panigrahi

2006-03-18T23:59:59.000Z

357

Smoothness of the Gap Function in the BCS-Bogoliubov Theory of Superconductivity  

E-Print Network (OSTI)

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.

Shuji Watanabe

2010-06-07T23:59:59.000Z

358

Technetium Dichloride: A New Binary Halide Containing Metal-Metal Multiple Bonds  

Science Conference Proceedings (OSTI)

Technetium dichloride has been discovered. It was synthesized from the elements and characterized by several physical techniques, including single crystal X-ray diffraction. In the solid state, technetium dichloride exhibits a new structure type consisting of infinite chains of face sharing [Tc{sub 2}Cl{sub 8}] rectangular prisms that are packed in a commensurate supercell. The metal-metal separation in the prisms is 2.127(2) {angstrom}, a distance consistent with the presence of a Tc {triple_bond} Tc triple bond that is also supported by electronic structure calculations.

Poineau, Frederic; Malliakas, Christos D.; Weck, Philippe F.; Scott, Brian L.; Johnstone, Erik V.; Forster, Paul M.; Kim, Eunja; Kanatzidis, Mercouri G.; Czerwinski, Kenneth R.; Sattelberge, Alfred P. (UNLV); (NWU); (LANL)

2011-10-19T23:59:59.000Z

359

Technetium dichloride : a new binary halide containing metal-metal multiple bonds.  

Science Conference Proceedings (OSTI)

Technetium dichloride has been discovered. It was synthesized from the elements and characterized by several physical techniques, including single crystal X-ray diffraction. In the solid state, technetium dichloride exhibits a new structure type consisting of infinite chains of face sharing [Tc{sub 2}Cl{sub 8}] rectangular prisms that are packed in a commensurate supercell. The metal-metal separation in the prisms is 2.127(2) {angstrom}, a distance consistent with the presence of a Tc {triple_bond} Tc triple bond that is also supported by electronic structure calculations.

Poineau, F.; Malliakas, C. D.; Weck, P. F.; Scott, B. L.; Johnstone, E. V.; Forster, P. M.; Kim, E.; Kanatzidis, M. G.; Czerwinski, K. R.; Sattelberger, A. P. (Materials Science Division); ( OTD-EESA); (Univ. of Nevada at Las Vegas); (LANL); (Northwestern Univ.)

2011-06-15T23:59:59.000Z

360

Stabilizing perturbative Yang-Mills thermodynamics with Gribov quantization  

E-Print Network (OSTI)

We evaluate the thermodynamic quantities of Yang-Mills theory using the Gribov quantization, which deals with nonperturbative resummation. The magnetic scale is automatically incorporated into the framework and we find it efficient to stabilize the perturbative expansion of the free energy. In the temperature range $T=T_c \\sim 2\\,T_c$ the major uncertainty in our results comes from the nonperturbative running coupling that is adopted from the lattice simulation, while the convergence above $2\\,T_c$ is impressively robust. We also present the corresponding interaction measure (i.e., trace anomaly) up to close to $T_c$.

Kenji Fukushima; Nan Su

2013-04-30T23:59:59.000Z

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Increased superconducting transition temperature of a niobium thin-film proximity-coupled to gold nanoparticles using linking organic molecules  

E-Print Network (OSTI)

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.

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

362

Increased superconducting transition temperature of a niobium thin-film proximity-coupled to gold nanoparticles using linking organic molecules  

E-Print Network (OSTI)

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.

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

363

High-Level Waste Corporate Board Meeting Agenda  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

High-Level Waste Corporate Board High-Level Waste Corporate Board Meeting Agenda Loews Hotel 1065 West Peachtree St, Atlanta, Georgia November 18, 2010 Time Topic Speaker 7:30 AM Closed Session - ratify Charter Board members 8:30 AM Welcome, Introduction, 2011 focus for HLW Corp Board Shirley Olinger 8:50 AM Introduction to Tc/I in Hanford Flowsheet  Show flowsheet w/ split locations  Describe recycle of LAW concept  Discuss baseline assumptions  Describe subsequent talks using flowsheet figure Gary Smith 9:15 AM Waste Treatment & Immobilization Plant (WTP)  Tc/I split factors (w/ and w/o recycle)  Water management (w/ and w/o recycle) Albert Kruger 9:45 AM WTP Melter/Offgas Systems Decontamination Factors  Re as a stimulant for Tc  Issues that limit Tc incorporation in LAW glass

364

Stanford Synchrotron Radiation Lightsource  

NLE Websites -- All DOE Office Websites (Extended Search)

this problem is to explore the phases next to superconductivity on the temperature-doping phase diagram. The pseudogap phase above Tc has been a particular stumbling block because...

365

Phase Transformation and Equilibrium Diagram of Ti-Al-Nb Ternary ...  

Science Conference Proceedings (OSTI)

The phase type and distribution range of Ti-Al-Nb ternary alloy, as well as calculated phase diagram, were directly obtained by TC calculation, as a instruction of ...

366

The Development and Assessment of a Model-, Grid-, and Basin-Independent Tropical Cyclone Detection Scheme  

Science Conference Proceedings (OSTI)

A novel approach to tropical cyclone (TC) detection in coarse-resolution numerical model data is introduced and assessed. This approach differs from traditional detectors in two main ways. First, it was developed and tuned using 20 yr of ECMWF ...

K. J. Tory; S. S. Chand; R. A. Dare; J. L. McBride

2013-08-01T23:59:59.000Z

367

An Algorithm for Tracking Eyes of Tropical Cyclones  

Science Conference Proceedings (OSTI)

A tropical cyclone (TC) eye tracking (TCET) algorithm is presented in this study to objectively identify and track the eye and center of a tropical cyclone using radar reflectivity data. Twelve typhoon cases were studied for evaluating the TCET ...

Pao-Liang Chang; Ben Jong-Dao Jou; Jian Zhang

2009-02-01T23:59:59.000Z

368

Intercomparison of Ground-Based Velocity Track Display (GBVTD)-Retrieved Circulation Centers and Structures of Hurricane Danny (1997) from Two Coastal WSR-88Ds  

Science Conference Proceedings (OSTI)

A plausible primary circulation and circulation center of a tropical cyclone (TC) can be deduced from a coastal Doppler radar using the ground-based velocity track display (GBVTD) technique and the GBVTD-simplex algorithm. The quality of the ...

Shirley T. Murillo; Wen-Chau Lee; Michael M. Bell; Gary M. Barnes; Frank D. Marks Jr.; Peter P. Dodge

2011-01-01T23:59:59.000Z

369

Daniel Haskel  

NLE Websites -- All DOE Office Websites (Extended Search)

"XAFS study of the low-temperature tetragonal phase of La2-xBaxCuO4: Disorder, stripes and Tc suppression at x0.125", D. Haskel, E. A. Stern, F. Dogan and A. Moodenbaugh,...

370

U.S. Department of Energy Categorical Exclusion ...  

NLE Websites -- All DOE Office Websites (Extended Search)

products from previous Steam Reforming tests with SRS Tank 50 low activity waste (Mod B) mixed waste treatability study (TC- A-2010-072) will be tested for product durability,...

371

Method for treating liquid wastes  

DOE Patents (OSTI)

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.

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

372

Understanding the Relationships between Lightning, Cloud Microphysics, and Airborne Radar-Derived Storm Structure during Hurricane Karl (2010)  

Science Conference Proceedings (OSTI)

This study explores relationships between lightning, cloud microphysics, and tropical cyclone (TC) storm structure in Hurricane Karl (16 September 2010) using data collected by the NASA DC-8 and Global Hawk (GH) aircraft during NASA’s Genesis and ...

Brad Reinhart; Henry Fuelberg; Richard Blakeslee; Douglas Mach; Andrew Heymsfield; Aaron Bansemer; Stephen L. Durden; Simone Tanelli; Gerald Heymsfield; Bjorn Lambrigtsen

373

Microsoft Word - Technetium.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

Investigations to Identify the Soluble, Non-pertechnetate Species Investigations to Identify the Soluble, Non-pertechnetate Species in the High-level Nuclear Waste at the Hanford Site Wayne W. Lukens 1 , David K. Shuh 1 , Norman C. Schroeder 2 , Kenneth R. Ashley 3 1 Lawrence Berkeley National Laboratory, Berkeley, CA 2 Los Alamos National Laboratory, Los Alamos, NM 3 Texas A&M University-Commerce, Commerce, TX Technetium ( 99 Tc) is an abundant fission product that presents a number of challenges for the safe, long-term disposal of high-level nuclear waste due to the 213,000 year half-life of 99 Tc and the high environmental mobility of pertechnetate, TcO 4 - , the most stable form of technetium under aerobic conditions. Because of these properties, 99 Tc is often the radionuclide of greatest concern when evaluating the near-term performance of waste repositories.

374

Tropical Indian Ocean Influence on Northwest Pacific Tropical Cyclones in Summer following Strong El Niño  

Science Conference Proceedings (OSTI)

In the summer following a strong El Niño, tropical cyclone (TC) number decreases over the Northwest (NW) Pacific despite little change in local sea surface temperature. The authors’ analysis suggests El Niño–induced tropical Indian Ocean (TIO) ...

Yan Du; Lei Yang; Shang-Ping Xie

2011-01-01T23:59:59.000Z

375

The Effect of Internally Generated Inner-Core Asymmetries on Tropical Cyclone Potential Intensity  

Science Conference Proceedings (OSTI)

In a quiescent environment on an f plane, the internal dynamic processes of a tropical cyclone (TC) can generate axially asymmetric circulations (asymmetries) in its inner-core region. The present study investigates how these inner-core ...

Bo Yang; Yuqing Wang; Bin Wang

2007-04-01T23:59:59.000Z

376

Future Change of Western North Pacific Typhoons: Projections by a 20-km-Mesh Global Atmospheric Model  

Science Conference Proceedings (OSTI)

Projected future changes in tropical cyclone (TC) activity over the western North Pacific (WNP) under the Special Report on Emissions Scenarios (SRES) A1B emission scenario were investigated using a 20-km-mesh, very-high-resolution Meteorological ...

Hiroyuki Murakami; Bin Wang; Akio Kitoh

2011-02-01T23:59:59.000Z

377

Tropical Cyclone Formation Guidance Using Pregenesis Dvorak Climatology. Part I: Operational Forecasting and Predictive Potential  

Science Conference Proceedings (OSTI)

While there are a variety of modes for tropical cyclone (TC) development, there have been relatively few efforts to systematically catalog both nondeveloping and developing cases. This paper introduces an operationally derived climatology of ...

Joshua H. Cossuth; Richard D. Knabb; Daniel P. Brown; Robert E. Hart

2013-02-01T23:59:59.000Z

378

Current Capability of Operational Numerical Models in Predicting Tropical Cyclone Intensity in the Western North Pacific  

Science Conference Proceedings (OSTI)

Forecasts of tropical cyclone (TC) intensity from six operational models (three global models and three regional models) during 2010 and 2011 are assessed to study the current capability of model guidance in the western North Pacific. The ...

Hui Yu; Peiyan Chen; Qingqing Li; Bi Tang

2013-04-01T23:59:59.000Z

379

Environmental Dynamical Control of Tropical Cyclone Intensity—An Observational Study  

Science Conference Proceedings (OSTI)

The effects of two environmental dynamical factors, namely, the transitional speed and vertical wind shear, on tropical cyclone (TC) intensification, intensity, and lifetime peak intensity were analyzed based on observations in the western North ...

Zhihua Zeng; Yuqing Wang; Chun-Chieh Wu

2007-01-01T23:59:59.000Z

380

Systematic Variation of Summertime Tropical Cyclone Activity in the Western North Pacific in Relation to the Madden–Julian Oscillation  

Science Conference Proceedings (OSTI)

The variability of observed tropical cyclone (TC) activity (i.e., genesis, track, and landfall) in the western North Pacific (WNP) is examined in relation to the various categories of the Madden–Julian oscillation (MJO) during summer (June–...

Joo-Hong Kim; Chang-Hoi Ho; Hyeong-Seog Kim; Chung-Hsiung Sui; Seon Ki Park

2008-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

A Comparison of Two Tropical Cyclone Bogussing Schemes  

Science Conference Proceedings (OSTI)

The impact of two bogussing schemes on tropical cyclone (TC) forecasts is compared. One scheme for bogussing TCs into the initial conditions of the nonhydrostatic version of the fifth-generation Pennsylvania State University–National Center for ...

Dongliang Wang; Xudong Liang; Ying Zhao; Bin Wang

2008-02-01T23:59:59.000Z

382

An Example of the Value of Strong Climatological Signals in Tropical Cyclone Track Forecasting: Hurricane Ivan (2004)  

Science Conference Proceedings (OSTI)

Since 1970, tropical cyclone (TC) track forecasts have improved steadily in the Atlantic basin. This improvement has been linked primarily to advances in numerical weather prediction (NWP) models. Concurrently, with few exceptions, the ...

Bradford S. Barrett; Lance M. Leslie; Brian H. Fiedler

2006-05-01T23:59:59.000Z

383

Sudden Tropical Cyclone Track Changes over the Western North Pacific: A Composite Study  

Science Conference Proceedings (OSTI)

Tropical cyclones (TCs) over the western North Pacific (WNP) are usually embedded in the multitime-scale summer monsoon circulation and occasionally experience sudden track changes, which are currently a challenge in TC forecasting. A composite ...

Liguang Wu; Zhongping Ni; Jingjing Duan; Huijun Zong

2013-08-01T23:59:59.000Z

384

Thermodynamic Aspects of Tropical Cyclone Formation  

Science Conference Proceedings (OSTI)

The thermodynamic aspects of tropical cyclone (TC) formation near the center of the wave pouch, a region of approximately closed Lagrangian circulation within the wave critical layer, are examined through diagnoses of a high-resolution numerical ...

Zhuo Wang

2012-08-01T23:59:59.000Z

385

Modulation of South Indian Ocean Tropical Cyclones by the Madden–Julian Oscillation and Convectively Coupled Equatorial Waves  

Science Conference Proceedings (OSTI)

The subseasonal modulation of tropical cyclone (TC) genesis by large-scale atmospheric wave modes is studied using data from the south Indian Ocean region. The modes considered are the Madden–Julian oscillation (MJO), and the convectively coupled ...

Miloud Bessafi; Matthew C. Wheeler

2006-02-01T23:59:59.000Z

386

A Transition Mechanism for the Spontaneous Axisymmetric Intensification of Tropical Cyclones  

Science Conference Proceedings (OSTI)

A mechanism for the transition of tropical cyclones (TCs) to the spontaneous rapid intensification (RI) phase is proposed based on numerical results of a three-dimensional full-physics model. The intensification phase of the simulated TC is ...

Yoshiaki Miyamoto; Tetsuya Takemi

2013-01-01T23:59:59.000Z

387

Does It Make Sense To Modify Tropical Cyclones? A Decision-Analytic Assessment  

E-Print Network (OSTI)

Recent dramatic increases in damages caused by tropical cyclones (TCs) and improved understanding of TC physics have led DHS to fund research on intentional hurricane modification. We present a decision analytic assessment ...

Klima, Kelly

388

An elastic contour matching model for tropical cyclone pattern recognition  

Science Conference Proceedings (OSTI)

In this paper, an elastic graph dynamic link model (EGDLM) based on elastic contour matching is proposed to automate the Dvorak technique for tropical cyclone (TC) pattern interpretation from satellite images. This method integrates traditional dynamic ...

R. S.T. Lee; J. N.K. Lin

2001-06-01T23:59:59.000Z

389

Midlevel Ventilation's Constraint on Tropical Cyclone Intensity  

E-Print Network (OSTI)

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 cyclone’s intensity. An ...

Tang, Brian Hong-An

390

The Response of Quasigeostrophic Oceanic Vortices to Tropical Cyclone Forcing  

Science Conference Proceedings (OSTI)

The response of quasigeostrophic (QG) oceanic vortices to tropical cyclone (TC) forcing is investigated using an isopycnic ocean model. Idealized oceanic currents and wind fields derived from observational data acquired during Hurricane Katrina ...

Benjamin Jaimes; Lynn K. Shay; George R. Halliwell

2011-10-01T23:59:59.000Z

391

UNITED STATES DEPARTMEN'rOFTHt" INTERIOR GEOJ1)GlCAL SURVEY  

Office of Legacy Management (LM)

of te5tin and sampling Conditions (01ffecting testing and sampling. Hydraulic tc s t Lng of holt: Dee-II. . . * . . Well history * . * * * . * * * . . . . . . . Page 1 2 3 8 15...

392

Joint Impact of Forecast Tendency and State Error Biases in Ensemble Kalman Filter Data Assimilation of Inner-Core Tropical Cyclone Observations  

Science Conference Proceedings (OSTI)

In this study the properties and causes of systematic errors in high-resolution data assimilation of inner-core tropical cyclone (TC) observations were investigated using the Hurricane Weather Research and Forecasting (HWRF) Ensemble Data ...

Tomislava Vukicevic; Altu? Aksoy; Paul Reasor; Sim D. Aberson; Kathryn J. Sellwood; Frank Marks

2013-09-01T23:59:59.000Z

393

Preliminary assessment of potential CDM early start projects in Brazil  

E-Print Network (OSTI)

10 XI. Wind Farms in Northeast$20/tC SMALL HYDRO IN GOIAS WIND FARMS BAGASSE ELECTRICITYFax: +55(71)379 1759 XI. Wind Farms in Northeast Brazil

Meyers, S.; Sathaye, J.; Lehman, B.; Schumacher, K.; van Vliet, O.; Moreira, J.R.

2000-01-01T23:59:59.000Z

394

OOMMF 2D Solver  

Science Conference Proceedings (OSTI)

... fflProcess one MIF file: tclsh oommf .tcl batc hsolve taskA.mif fflProcess asequence ofMIF files: tclsh oommf .tcl batc hmaster simpletask.tc l ' & ...

395

From Public Access to Private Connections: Network Policy and National Advantage  

E-Print Network (OSTI)

ihnt support boih Telc-tcl and Ascii standards Advanced^' Tlie markets open by lcl£tcl have lostered a dirivingmanagement procedures. TeTc"tcl has also prompted the

Bar, Francois; Borrus, Michael

2005-01-01T23:59:59.000Z

396

Assimilation of Tropical Cyclone Track and Structure Based on the Ensemble Kalman Filter (EnKF)  

Science Conference Proceedings (OSTI)

A new tropical cyclone vortex initialization method based on the ensemble Kalman filter (EnKF) is proposed in this study. Three observed parameters that are related to the tropical cyclone (TC) track and structure—center position, velocity of ...

Chun-Chieh Wu; Guo-Yuan Lien; Jan-Huey Chen; Fuqing Zhang

2010-12-01T23:59:59.000Z

397

Optimized Designs and Materials for Nanostructure Based Solar Cells  

E-Print Network (OSTI)

IBSC Tc = 300K Solar Concentration Ratio (suns) Fig. 3.25irradiation and solar cells The irradiance of the sun on thebetween Sun and Earth - is called the solar constant. The

Shao, Qinghui

2009-01-01T23:59:59.000Z

398

Determination of Total Petroleum Hydrocarbons (TPH) Using Total Carbon Analysis  

SciTech Connect

Several methods have been proposed to replace the Freon(TM)-extraction method to determine total petroleum hydrocarbon (TPH) content. For reasons of cost, sensitivity, precision, or simplicity, none of the replacement methods are feasible for analysis of radioactive samples at our facility. We have developed a method to measure total petroleum hydrocarbon content in aqueous sample matrixes using total organic carbon (total carbon) determination. The total carbon content (TC1) of the sample is measured using a total organic carbon analyzer. The sample is then contacted with a small volume of non-pokar solvent to extract the total petroleum hydrocarbons. The total carbon content of the resultant aqueous phase of the extracted sample (TC2) is measured. Total petroleum hydrocarbon content is calculated (TPH = TC1-TC2). The resultant data are consistent with results obtained using Freon(TM) extraction followed by infrared absorbance.

Ekechukwu, A.A.

2002-05-10T23:59:59.000Z

399

Modification of radiation hazards to the adult and its fetus from nuclear medicine procedures  

SciTech Connect

The effects of perchlorate on the quantitative distribution patterns of / sup 99m/Tc intravenously administered as pertechnetate in the human adult and its fetus were studied in a variety of situations and are summarized. Perchlorate, when administered shortly before /sup 99m/Tc, suppresses concentration in the adult thyroid gland, stomach, and urine; but tends to increase intestinal localization; and prolongs disappearance from the blood. It also inhibits concentration in the placenta and fetus. The greatest reductions in fetal concentrations occur in the femur, spleen, stomach, and thyroid. The estimated radiation absorbed doses to the human fetus are about 80 mrad/mCi for /sup 99m/Tc- pertechnetate alone, and around 30 mrad/mCi if pretreatment with perchlorate is used. Previously localized /sup 99m/Tc may be released by perchlorate from the thyroid gland and stomach, but not from the placenta and fetus. (auth)

Lathrop, K.A.

1976-01-01T23:59:59.000Z

400

Necessary Conditions for Tropical Cyclone Rapid Intensification as Derived from 11 Years of TRMM Data  

Science Conference Proceedings (OSTI)

Rainfall and convective properties of tropical cyclones (TCs) are statistically quantified for different TC intensity change categories by using Tropical Rainfall Measuring Mission (TRMM) data from December 1997 to December 2008. Four 24-h future ...

Haiyan Jiang; Ellen M. Ramirez

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Convective and Rainfall Properties of Tropical Cyclone Inner Cores and Rainbands from 11 Years of TRMM Data  

Science Conference Proceedings (OSTI)

Convective and rainfall properties of tropical cyclones (TCs) are statistically quantified by using Tropical Rainfall Measuring Mission (TRMM) data from December 1997 to December 2008. A semimanual method is used to divide the TC raining area into ...

Haiyan Jiang; Ellen M. Ramirez; Daniel J. Cecil

2013-02-01T23:59:59.000Z

402

Contributions of ENSO and East Indian Ocean SSTA to the Interannual Variability of Northwest Pacific Tropical Cyclone Frequency  

Science Conference Proceedings (OSTI)

This study attempts to understand contributions of ENSO and the boreal summer sea surface temperature anomaly (SSTA) in the East Indian Ocean (EIO) to the interannual variability of tropical cyclone (TC) frequency over the western North Pacific (...

Ruifen Zhan; Yuqing Wang; Xiaotu Lei

2011-01-01T23:59:59.000Z

403

Impacts of Ocean–Atmosphere Coupling on Tropical Cyclone Intensity Change and Ocean Prediction in the Australian Region  

Science Conference Proceedings (OSTI)

This study investigates the impact of atmosphere–ocean coupling on predicted tropical cyclone (TC) intensity change and the ocean response in the Australian region. The coupled model comprises the Australian Bureau of Meteorology’s Tropical ...

P. A. Sandery; G. B. Brassington; A. Craig; T. Pugh

2010-06-01T23:59:59.000Z

404

--No Title--  

NLE Websites -- All DOE Office Websites (Extended Search)

Uranium oxide synthesis. Uranium Oxide Synthesis Savannah River Site Aiken South Carolina TC-A-2010-207, Rev.0 Dec 7, 2010 Andrew R. Grainger Digitally signed by Andrew R. Grainger...

405

Air Corrosivity in U.S. Outdoor-Air-Cooled Data Centers is Similar to That in Conventional Data Centers  

E-Print Network (OSTI)

A Review of ASHRAE TC 9.9 White Paper titled Gaseous andEquipment published a white paper in 2009 entitled Gaseousinterpretation of the white paper may cause unwarranted

Coles, Henry C.

2012-01-01T23:59:59.000Z

406

U.S. Department of Energy Categorical Exclusion ...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

in D-Area Savannah River Site AikenAikenSouth Carolina Relocate a push pole at the SCADA Pole 80 in D-Area per attached sketch 103112 and in conjunction with TC-D-2012-0097....

407

Atlantic Hurricanes and Climate Change. Part II: Role of Thermodynamic Changes in Decreased Hurricane Frequency  

Science Conference Proceedings (OSTI)

A method of downscaling which isolates the effect of temperature and moisture changes on tropical cyclone (TC) activity was presented in Part I of this study. By applying thermodynamic modifications to analyzed initial and boundary conditions from ...

Megan S. Mallard; Gary M. Lackmann; Anantha Aiyyer

408

Assessment of the Role of Aircraft Reconnaissance on Tropical Cyclone Analysis and Forecasting  

Science Conference Proceedings (OSTI)

The impact of aircraft reconnaissance on tropical cyclone (TC) observation and forecasting is assessed. The motivation for this assessment is the termination of Department of Defense (DOD) aircraft reconnaissance in the northwest Pacific in 1987 ...

William M. Gray; Charles Neumann; Ted L. Tsui

1991-12-01T23:59:59.000Z

409

Environmental Flow Impacts on Tropical Cyclone Structure Diagnosed from Airborne Doppler Radar Composites  

Science Conference Proceedings (OSTI)

Following a recent demonstration of multicase compositing of axisymmetric tropical cyclone (TC) structure derived from airborne Doppler radar measurements, the authors extend the analysis to the asymmetric structure using an unprecedented database ...

Paul D. Reasor; Robert Rogers; Sylvie Lorsolo

2013-09-01T23:59:59.000Z

410

Evaluation of a Wind-Wave System for Ensemble Tropical Cyclone Wave Forecasting. Part I: Winds  

Science Conference Proceedings (OSTI)

A computationally efficient method of producing tropical cyclone (TC) wind analyses is developed and tested, using a hindcast methodology, for 12 Gulf of Mexico storms. The analyses are created by blending synthetic data, generated from a simple ...

Steven M. Lazarus; Samuel T. Wilson; Michael E. Splitt; Gary A. Zarillo

2013-04-01T23:59:59.000Z

411

Extreme rainfall intensities and long-term rainfall risk from tropical cyclones  

E-Print Network (OSTI)

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 ...

Langousis, Andreas, 1981-

2009-01-01T23:59:59.000Z

412

Objective Estimation of the 24-h Probability of Tropical Cyclone Formation  

Science Conference Proceedings (OSTI)

A new product for estimating the 24-h probability of TC formation in individual 5° × 5° subregions of the North Atlantic, eastern North Pacific, and western North Pacific tropical basins is developed. This product uses environmental and ...

Andrea B. Schumacher; Mark DeMaria; John A. Knaff

2009-04-01T23:59:59.000Z

413

Observational Evidence for Alternate Modes of Track-Altering Binary Tropical Cyclone Scenarios  

Science Conference Proceedings (OSTI)

An observational study of western North Pacific tropical cyclones (TC) revealed many cases of two TCs whose tracks were altered by processes that were quite different from the mutual advection (Fujiwhara-type) processes. Thus, four conceptual ...

Lester E. Carr III; Mark A. Boothe; Russell L. Elsberry

1997-09-01T23:59:59.000Z

414

Large-Scale Environmental Parameters Associated with Tropical Cyclone Formations in the Western North Pacific  

Science Conference Proceedings (OSTI)

The local environmental conditions associated with 405 tropical cyclone (TC) formations in the western North Pacific during 1990–2001 are examined in this study. Six large-scale parameters are obtained and computed from the NCEP reanalyses with ...

Kevin K. W. Cheung

2004-02-01T23:59:59.000Z

415

Prediction of Consensus Tropical Cyclone Track Forecast Error  

Science Conference Proceedings (OSTI)

The extent to which the tropical cyclone (TC) track forecast error of a consensus model (CONU) routinely used by the forecasters at the National Hurricane Center can be predicted is determined. A number of predictors of consensus forecast error, ...

James S. Goerss

2007-05-01T23:59:59.000Z

416

Developing versus Nondeveloping Disturbances for Tropical Cyclone Formation. Part II: Western North Pacific  

Science Conference Proceedings (OSTI)

Global daily reanalysis fields from the Navy Operational Global Atmospheric Prediction System (NOGAPS) are used to analyze Northern Hemisphere summertime (June–September) developing and nondeveloping disturbances for tropical cyclone (TC) ...

Bing Fu; Melinda S. Peng; Tim Li; Duane E. Stevens

2012-04-01T23:59:59.000Z

417

A Study of the Impacts of Vertical Diffusion on the Structure and Intensity of the Tropical Cyclones Using the High-Resolution HWRF System  

Science Conference Proceedings (OSTI)

The Hurricane Weather Research and Forecasting (HWRF) system was used in an idealized framework to gain a fundamental understanding of the variability in tropical cyclone (TC) structure and intensity prediction that may arise due to vertical ...

Sundararaman G. Gopalakrishnan; Frank Marks Jr.; Jun A. Zhang; Xuejin Zhang; Jian-Wen Bao; Vijay Tallapragada

2013-02-01T23:59:59.000Z

418

Multiscale Processes Leading to Supercells in the Landfalling Outer Rainbands of Hurricane Katrina (2005)  

Science Conference Proceedings (OSTI)

Shallow supercells are frequently observed within the outer rainbands—both onshore and offshore—of landfalling tropical cyclones (TCs). Such supercells can produce tornadoes along the coast even when the center of the parent TC is hundreds of ...

Benjamin W. Green; Fuqing Zhang; Paul Markowski

2011-12-01T23:59:59.000Z

419

A Numerical Study of the Effect of Dissipative Heating on Tropical Cyclone Intensity  

Science Conference Proceedings (OSTI)

The impact of dissipative heating on tropical cyclone (TC) intensity forecasts is investigated using the U.S. Navy’s operational mesoscale model (the Coupled Ocean/Atmosphere Mesoscale Prediction System). A physically consistent method of ...

Yi Jin; William T. Thompson; Shouping Wang; Chi-Sann Liou

2007-10-01T23:59:59.000Z

420

Analytical Chemistry Laboratory progress report for FY 1992  

Science Conference Proceedings (OSTI)

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.

Green, D.W.; Heinrich, R.R.; Graczyk, D.G.; Lindahl, P.C.; Boparai, A.S.; Bass, D.A.

1992-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

www.eia.gov  

U.S. Energy Information Administration (EIA)

rail_del_eps rail_del_eps basin TRANSPORT_MODE1 YEAR _TYPE_ _FREQ_ receipts CENTRAL APPALACHIA RR RV TC TR ILLINOIS NORTHERN APPALACHIA OTHER PRB PL SOUTHERN APPALACHIA

422

--No Title--  

NLE Websites -- All DOE Office Websites (Extended Search)

Radiological Nuclear (RN) sources. The sources used are the same set as the On Dock Rail (ODR) Portal Prototype test covered by EEC TC-A-2010-011, R0. A separate EEC is being...

423

Developing Advanced Weather Technologies for the Power Industry  

Science Conference Proceedings (OSTI)

The National Severe Storms Laboratory, the Salt River Project (SRP), and the Electric Power Research Institute have been involved in a multiyear tailored collaboration (TC) research project. The project was jointly supported by all three agencies ...

Charles L. Dempsey; Kenneth W. Howard; Robert A. Maddox; Daniel H. Phillips

1998-06-01T23:59:59.000Z

424

2nd Annual DOE-ERSP PI Meeting: Abstracts  

E-Print Network (OSTI)

Chromium Bioreduction at Hanford 100H Site Hazen T.C. Hazenthe Subsurface at the Hanford 300 Area (D. Wellman, PNNL)Scale Research Challenge: Hanford 300 Area (J. Zachara, PNNL

Hazen, Terry C.

2007-01-01T23:59:59.000Z

425

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

E-Print Network (OSTI)

modeling of U(VI) sorption to Hanford sediment with varyingTable 1. Composition of Hanford Tank Waste Treatment and1900 kg of 99 Tc at the Hanford Site, USA [3]. Most of this

Um, Wooyong

2013-01-01T23:59:59.000Z

426

An evaluation of tropical cyclone genesis forecasts from global numerical models  

Science Conference Proceedings (OSTI)

Tropical cyclone (TC) forecasts rely heavily on output from global numerical models. While some research has investigated the skill of various models with respect to track and intensity, few studies have considered how well global models forecast ...

Daniel J. Halperin; Henry E. Fuelberg; Robert E. Hart; Joshua H. Cossuth; Philip Sura; Richard J. Pasch

427

Evaluation of multiple dynamic initialization schemes for tropical cyclone prediction  

Science Conference Proceedings (OSTI)

Three different dynamic initialization schemes for tropical cyclone (TC) prediction in numerical prediction systems are described and evaluated. The first scheme involves the removal of the analyzed vortex, followed by insertion of a dynamically-...

Eric A. Hendricks; Melinda S. Peng; Tim Li

428

Different Pacific Ocean Warming Decaying Types and Northwest Pacific Tropical Cyclone Activity  

Science Conference Proceedings (OSTI)

This study focuses on statistical analysis of anomalous TC activities and the physical mechanisms behind these anomalies. Different patterns of decaying of the warm sea surface temperature anomaly (SSTA) over the equatorial central-eastern Pacific ...

Yao Ha; Zhong Zhong; Xiuqun Yang; Yuan Sun

429

Effects of Vertical Wind Shear and Storm Motion on Tropical Cyclone Rainfall Asymmetries Deduced from TRMM  

Science Conference Proceedings (OSTI)

Vertical wind shear and storm motion are two of the most important factors contributing to rainfall asymmetries in tropical cyclones (TCs). Global TC rainfall structure, in terms of azimuthal distribution and asymmetries relative to storm motion, ...

Shuyi S. Chen; John A. Knaff; Frank D. Marks Jr.

2006-11-01T23:59:59.000Z

430

Radionuclide Air Emission Report for 2009  

E-Print Network (OSTI)

243, Cm-246, Cm-248, Eu-152, Eu-154, H-3, I-129, Np-237, Pu-238, Pu-239, Pu-240, Pu-241, Pu-242, Sr-90, Tc-99, Th-232, U-233, U-

Wahl, Linnea

2010-01-01T23:59:59.000Z

431

Radionuclide Air Emission Report for 2007  

E-Print Network (OSTI)

Am-243, Cm-243, Cm-246, Cm-248, Eu-152, Eu-154, Np-237, Pu-238, Pu-239, Pu-240, Pu-241, Pu-242, Sr-90, Tc-99, Th-232, U (

Wahl, Linnea

2008-01-01T23:59:59.000Z

432

Radionuclide Air Emission Report for 2008  

E-Print Network (OSTI)

243, Cm-246, Cm-248, Eu-152, Eu-154, H-3, I-129, Np-237, Pu-238, Pu-239, Pu-240, Pu-241, Pu-242, Sr-90, Tc-99, Th-232, U-233, U-

Wahl, Linnea

2009-01-01T23:59:59.000Z

433

Momentum Transports Associated with Tropical Cyclone Recurvature  

Science Conference Proceedings (OSTI)

This study attempts to investigate the linear momentum budget responsible for tropical cyclone (TC) recurvature. Using the operational analyses from the U.K. Meteorological Office global model, the environmental flow associated with recurving TCs ...

Y. S. Li; Johnny C. L. Chan

1999-06-01T23:59:59.000Z

434

A Spatial Filter Approach to Evaluating the Role of Convection on the Evolution of a Mesoscale Vortex  

Science Conference Proceedings (OSTI)

A new spatial filter is proposed that exploits a spectral gap in power between the convective scale and the system (“vortex”) scale during tropical cyclone (TC) genesis simulations. Using this spatial separation, this study analyzes idealized ...

Glenn A. Creighton; Robert E. Hart; Philip Cunningham

2013-07-01T23:59:59.000Z

435

Quantifying Surface Energy Fluxes in the Vicinity of Inland-Tracking Tropical Cyclones  

Science Conference Proceedings (OSTI)

Tropical cyclones (TCs) typically weaken or transition to extratropical cyclones after making landfall. However, there are cases of TCs maintaining warm-core structures and intensifying inland unexpectedly, referred to as TC maintenance or ...

Theresa K. Andersen; David E. Radcliffe; J. Marshall Shepherd

436

Available Technologies: Engineered Bacterium with Resistance ...  

Khudyakov, J.I., D’haeseleer, P.D., Borglin, S.E., DeAngelis, K.M., Woo, H., Lindquist, E.A., Hazen, T.C., Simmons, B.A., Thelan, M.P., ...

437

www.eia.gov  

U.S. Energy Information Administration (EIA)

Oriente (30) VE Bachaquero (24) Bachaquero (17) NO Ekofisk Blend (42) UK Brent Blend (38) RS Middle East IR Iranian Light (34) IZ KU MU QA SA Arabian Heavy (27) TC ...

438

Revisiting the Influence of the Quasi-Biennial Oscillation on Tropical Cyclone Activity  

Science Conference Proceedings (OSTI)

The statistical relationship between the quasi-biennial oscillation (QBO) and tropical cyclone (TC) activity is explored, with a focus on the North Atlantic. Although there is a statistically significant relationship between the QBO and TCs in ...

Suzana J. Camargo; Adam H. Sobel

2010-11-01T23:59:59.000Z

439

Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants  

E-Print Network (OSTI)

thermal comfort measurements. CEDR-WP03-93. M. Foster, T.C BENTON, Arch Cain Diaz, CEDR, KYLE STAS Konis, PhD, ArchMasters, Arch Cain Diaz, CEDR, KYLE STAS Konis, PhD, Arch

Konis, Kyle Stas

2012-01-01T23:59:59.000Z

440

Effective Daylighting: Evaluating Daylighting Performance in the San Francisco Federal Building from the Perspective of Building Occupants  

E-Print Network (OSTI)

thermal comfort measurements. CEDR-WP03-93. M. Foster, T.C BENTON, Arch Cain Diaz, CEDR, KYLE STAS Konis, PhD, ArchMasters, Arch Cain Diaz, CEDR, KYLE STAS Konis, PhD, Arch

Konis, Kyle Stas

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

The effects of imposed stratospheric cooling on the maximum intensity of tropical cyclones in axisymmetric radiative-convective equilibrium  

Science Conference Proceedings (OSTI)

The effects of stratospheric cooling and sea surface temperature (SST) warming on tropical cyclone (TC) potential intensity (PI) are explored using an axisymmetric cloud-resolving model run to radiative-convective equilibrium (RCE). Almost all ...

Hamish A. Ramsay

442

BNL Center for Functional Nanomaterials  

NLE Websites -- All DOE Office Websites (Extended Search)

2007). In the study of his M. Phil. Degree, he synthesized bulk high-Tc cuprate superconductors (doped YBCO and BSCCO) by employing solid-state reaction methods and...

443

Improving Ocean Model Initialization for Coupled Tropical Cyclone Forecast Models Using GODAE Nowcasts  

Science Conference Proceedings (OSTI)

To simulate tropical cyclone (TC) intensification, coupled ocean–atmosphere prediction models must realistically reproduce the magnitude and pattern of storm-forced sea surface temperature (SST) cooling. The potential for the ocean to support ...

G. R. Halliwell Jr.; L. K. Shay; S. D. Jacob; O. M. Smedstad; E. W. Uhlhorn

2008-07-01T23:59:59.000Z

444

Tropical Cyclone Climatology in a 10-km Global Atmospheric GCM: Toward Weather-Resolving Climate Modeling  

Science Conference Proceedings (OSTI)

Northern Hemisphere tropical cyclone (TC) activity is investigated in multiyear global climate simulations with the ECMWF Integrated Forecast System (IFS) at 10-km resolution forced by the observed records of sea surface temperature and sea ice. ...

Julia V. Manganello; Kevin I. Hodges; James L. Kinter III; Benjamin A. Cash; Lawrence Marx; Thomas Jung; Deepthi Achuthavarier; Jennifer M. Adams; Eric L. Altshuler; Bohua Huang; Emilia K. Jin; Cristiana Stan; Peter Towers; Nils Wedi

2012-06-01T23:59:59.000Z

445

Tropical Cyclogenesis Associated with Rossby Wave Energy Dispersion of a Preexisting Typhoon. Part I: Satellite Data Analyses  

Science Conference Proceedings (OSTI)

The structure and evolution characteristics of Rossby wave trains induced by tropical cyclone (TC) energy dispersion are revealed based on the Quick Scatterometer (QuikSCAT) and Tropical Rainfall Measuring Mission (TRMM) Microwave Imager (TMI) ...

Tim Li; Bing Fu

2006-05-01T23:59:59.000Z

446

Restratification of the Upper Ocean after the Passage of a Tropical Cyclone: A Numerical Study  

Science Conference Proceedings (OSTI)

The role of baroclinic instability in the restratification of the upper ocean after the passage of a tropical cyclone (TC) is determined by means of numerical simulations. Using a regional ocean model, the Regional Ocean Modeling System (ROMS), a ...

Wei Mei; Claudia Pasquero

2012-09-01T23:59:59.000Z

447

California Energy Commission STATE ENERGY PROGRAM  

E-Print Network (OSTI)

, the Institute of Electrical and Electronics Engineers (IEEE) will publish Thayer's "Material Culture Jay Barker Apprentice Papers Published by Students Listing of this Year's TC Graduates Dean's List Analysis

448

CONTROVERSIAL ISSUES CONFRONTING THE BEIR III COMMITTEE---IMPLICATIONS FOR RADIATION PROTECTION  

E-Print Network (OSTI)

atomic bomb survivors in Hiroshima and Nagasaki [20]. There is an age-atomic bomb survivors [20] and Marshall Islanders [28] exposed tc nuclear explosions. There is an age-

Fabrikant, J.I.

2010-01-01T23:59:59.000Z

449

Functionalized gold surface-enhanced raman scattering ...  

... for rapid and ultra-sensitive detection and identification of perchlorate (ClO.sub.4.sup.-) and other anions such as technetium (TcO.sub.4.sup.-), ...

450

Summary - Remedial System Performance Improvement for the 200...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Plateau. The primary contaminant of concern (COC) is CT and to a lesser extent technetium-99 (Tc-99). The groundwater extraction system consists of ten wells with capacity of...

451

Method for treating liquid wastes  

DOE Patents (OSTI)

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.

Katti, K.V.; Volkert, W.A.; Singh, P.; Ketring, A.R.

1995-12-26T23:59:59.000Z

452

Distributed Production of Radionuclide Mo-99 Charles A. Gentile...  

NLE Websites -- All DOE Office Websites (Extended Search)

A. Gentile, Adam B. Cohen and George Ascione This invention is for the production of Technetium-99m (Tc-99m), a widely used medical isotope in a distributed and in-situ fashion....

453

Ris National Laboratory DTU Radiation Research Department  

E-Print Network (OSTI)

in the environment are global fallout from nuclear weapons testing and discharges from reprocessing plants for spent nuclear fuel. The global fallout has resulted in a concentration of 99 Tc in the North Atlantic of about 5

454

Development of a Chemistry-Based, Predictive Method for Determining the Amount of Non-Pertechnetate Technetium in the Hanford Tanks: FY 2012 Progress Report  

Science Conference Proceedings (OSTI)

This report describes investigations directed toward understanding the extent of the presence of highly alkaline soluble, non-pertechnetate technetium (n-Tc) in the Hanford Tank supernatants. The goals of this report are to: a) present a review of the available literature relevant to the speciation of technetium in the Hanford tank supernatants, b) attempt to establish a chemically logical correlation between available Hanford tank measurements and the presence of supernatant soluble n-Tc, c) use existing measurement data to estimate the amount of n-Tc in the Hanford tank supernatants, and d) report on any likely, process-friendly methods to eventually sequester soluble n-Tc from Hanford tank supernatants.

Rapko, Brian M.; Bryan, Samuel A.; Bryant, Janet L.; Chatterjee, Sayandev; Edwards, Matthew K.; Houchin, Joy Y.; Janik, Tadeusz J.; Levitskaia, Tatiana G.; Peterson, James M.; Peterson, Reid A.; Sinkov, Sergey I.; Smith, Frances N.; Wittman, Richard S.

2013-01-30T23:59:59.000Z

455

Improving Tropical Cyclone Intensity Guidance in the Eastern North Pacific  

Science Conference Proceedings (OSTI)

The primary objective of this research is the development of a statistical model that will provide tropical cyclone (TC) intensity guidance for the eastern North Pacific (ENP) superior to that provided by climatology and persistence models. ...

Kevin R. Petty; Jay S. Hobgood

2000-04-01T23:59:59.000Z

456

Intercomparison of Targeted Observation Guidance for Tropical Cyclones in the Northwestern Pacific  

Science Conference Proceedings (OSTI)

This study compares six different guidance products for targeted observations over the northwest Pacific Ocean for 84 cases of 2-day forecasts in 2006 and highlights the unique dynamical features affecting the tropical cyclone (TC) tracks in this ...

Chun-Chieh Wu; Jan-Huey Chen; Sharanya J. Majumdar; Melinda S. Peng; Carolyn A. Reynolds; Sim D. Aberson; Roberto Buizza; Munehiko Yamaguchi; Shin-Gan Chen; Tetsuo Nakazawa; Kun-Hsuan Chou

2009-08-01T23:59:59.000Z

457

Annual Volume and Area Variations in Tropical Cyclone Rainfall over the Eastern United States  

Science Conference Proceedings (OSTI)

This paper examines tropical cyclone (TC) rainfall in the eastern United States from the perspective of documenting accumulated annual water volumes and areas of the precipitation. Volume is a value that merges both rainfall depth and rainfall ...

Ricardo C. Nogueira; Barry D. Keim

2010-08-01T23:59:59.000Z

458

Assessing Animal Vocal Communication Using the Hyperspace Analog to Language (HAL) Model  

E-Print Network (OSTI)

SONG: By song. PR = Puerto Rico, TC = Turks and Caicos, LA =middle geographic area (Puerto Rico), that is a combinationLastly, the songs in Puerto Rico appear to be slightly more

Kaufman, Allison B.

2010-01-01T23:59:59.000Z

459

Observed versus GCM-Generated Local Tropical Cyclone Frequency: Comparisons Using a Spatial Lattice  

Science Conference Proceedings (OSTI)

Of broad scientific and public interest is the reliability of global climate models (GCMs) to simulate future regional and local tropical cyclone (TC) occurrences. Atmospheric GCMs are now able to generate vortices resembling actual TCs, but ...

Sarah Strazzo; James B. Elsner; Timothy LaRow; Daniel J. Halperin; Ming Zhao

2013-11-01T23:59:59.000Z

460

Evaluation of the National Hurricane Center’s Tropical Cyclone Wind Speed Probability Forecast Product  

Science Conference Proceedings (OSTI)

A tropical cyclone (TC) wind speed probability forecast product developed at the Cooperative Institute for Research in the Atmosphere (CIRA) and adopted by the National Hurricane Center (NHC) is evaluated for U.S. land-threatening and landfalling ...

Michael E. Splitt; Jaclyn A. Shafer; Steven M. Lazarus; William P. Roeder

2010-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Scientific Prerequisites to Comprehension of the Tropical Cyclone Forecast: Intensity, Track, and Size  

Science Conference Proceedings (OSTI)

The communication by forecasters of tropical cyclone (TC) descriptions and forecasts to user communities necessarily involves the transmission of information based in science to different classes of users composed primarily of nonscientists. ...

Lori Drake

2012-04-01T23:59:59.000Z

462

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

E-Print Network (OSTI)

Synchrotron Light Source (NSLS) or on beamline 4-1 at theTc uptake in goethite (%) NSLS NA SSRL NA SSRL NA SSRL XAFSNA indicates “not applicable”; NSLS = National Synchrotron

Um, Wooyong

2013-01-01T23:59:59.000Z

463

ENB Paper  

NLE Websites -- All DOE Office Websites (Extended Search)

TC2 window was measured at normal incidence by projecting light from a white light-emitting diode (LED) through the window from one side and mounting a photodetector on the...

464

A New Parametric Tropical Cyclone Tangential Wind Profile Model  

Science Conference Proceedings (OSTI)

A new parametric tropical cyclone (TC) wind profile model is presented for depicting representative surface pressure profiles corresponding to multiple-maxima wind profiles that exhibit single-, dual-, and triple-maximum concentric-eyewall wind ...

Vincent T. Wood; Luther W. White; Hugh E. Willoughby; David P. Jorgensen

2013-06-01T23:59:59.000Z

465

A novel multi-scale intensity metric for evaluation of tropical cyclone intensity forecasts  

Science Conference Proceedings (OSTI)

In this study, a new Multi-Scale Intensity (MSI) metric for evaluating Tropical Cyclone (TC) intensity forecasts is presented. The metric consists of the resolvable and observable, low wavenumber intensity represented by the sum of amplitudes of ...

Tomislava Vukicevic; Eric Uhlhorn; Paul Reasor; Bradley Klotz

466

Evaluation of the Turbulent Kinetic Energy Dissipation Rate Inside ...  

Science Conference Proceedings (OSTI)

Abstract Inferring the vertical variation of the mean turbulent kinetic energy ..... the times at which a threshold-crossings occurs are defined by the indicator function .... of noise infection and noise intensity, introducing a threshold Tc significantly ...

467

A Vortex Relocation Scheme for Tropical Cyclone Initialization in Advanced Research WRF  

Science Conference Proceedings (OSTI)

This paper introduces a relocation scheme for tropical cyclone (TC) initialization in the Advanced Research Weather Research and Forecasting (ARW-WRF) model and demonstrates its application to 70 forecasts of Typhoons Sinlaku (2008), Jangmi (2008)...

Ling-Feng Hsiao; Chi-Sann Liou; Tien-Chiang Yeh; Yong-Run Guo; Der-Song Chen; Kang-Ning Huang; Chuen-Teyr Terng; Jen-Her Chen

2010-08-01T23:59:59.000Z

468

--No Title--  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

will accompany the scrap can parts discard in the 10" DPTE. Destructive evaluation of Pu Storage Can Bundles Savannah River Site Aiken South Carolina TC-A-2011-00013, Rev.0 Mar...

469

GPCE-AX: An Anisotropic Extension to the Goerss Predicted Consensus Error in Tropical Cyclone Track Forecasts  

Science Conference Proceedings (OSTI)

A method to predict an anisotropic expected forecast error distribution for consensus forecasts of tropical cyclone (TC) tracks is presented. The method builds upon the Goerss predicted consensus error (GPCE), which predicts the isotropic radius ...

James A. Hansen; James S. Goerss; Charles Sampson

2011-06-01T23:59:59.000Z

470

Low temperature quasiparticle transport in d-wave superconductors  

E-Print Network (OSTI)

Experiments have now established that the order parameter (gap) in the high-Tc cuprate superconductors exhibits d-wave symmetry, vanishing at four nodal points on the Fermi surface. Near each of these four gap nodes, ...

Durst, Adam Craig, 1974-

2002-01-01T23:59:59.000Z

471

A Southwest Pacific Tropical Cyclone Climatology and Linkages to the El Niño–Southern Oscillation  

Science Conference Proceedings (OSTI)

The new South Pacific Enhanced Archive for Tropical Cyclones (SPEArTC) dataset provides an opportunity to develop a more complete climatology of tropical cyclones (TCs) in the southwest Pacific. Here, spatial patterns and characteristics of TCs ...

Howard J. Diamond; Andrew M. Lorrey; James A. Renwick

2013-01-01T23:59:59.000Z

472

A TRMM-Based Tropical Cyclone Cloud and Precipitation Feature Database  

Science Conference Proceedings (OSTI)

The Tropical Rainfall Measuring Mission (TRMM) satellite has provided invaluable data for tropical cyclone (TC) research since December 1997. The challenge, however, is how to analyze and efficiently utilize all of the information from several ...

Haiyan Jiang; Chuntao Liu; Edward J. Zipser

2011-06-01T23:59:59.000Z

473

The Impact of Horizontal Grid Spacing on the Microphysical and Kinematic Structures of Strong Tropical Cyclones Simulated with the WRF-ARW Model  

Science Conference Proceedings (OSTI)

Using the Advanced Weather Research and Forecasting numerical model, the impact of horizontal grid spacing on the microphysical and kinematic structure of a numerically simulated tropical cyclone (TC), and their relationship to storm intensity ...

Alexandre O. Fierro; Robert F. Rogers; Frank D. Marks; David S. Nolan

2009-11-01T23:59:59.000Z

474

Analysis of Idealized Tropical Cyclone Simulations Using the Weather Research and Forecasting Model: Sensitivity to Turbulence Parameterization and Grid Spacing  

Science Conference Proceedings (OSTI)

The Weather Research and Forecasting Advanced Research Model (WRF-ARW) was used to perform idealized tropical cyclone (TC) simulations, with domains of 36-, 12-, and 4-km horizontal grid spacing. Tests were conducted to determine the sensitivity ...

Kevin A. Hill; Gary M. Lackmann

2009-02-01T23:59:59.000Z

475

RF breakdown effects in microwave power amplifiers  

E-Print Network (OSTI)

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 ...

Arumilli, Gautham Venkat

2007-01-01T23:59:59.000Z

476

Numerical Simulation of Hurricane Bonnie (1998). Part III: Energetics  

Science Conference Proceedings (OSTI)

Despite considerable research on tropical cyclones (TCs), few studies have been performed to examine inner-core energy conversions because of the lack of high-resolution data. In this study, the TC energetic characteristics in relation to ...

Wallace Hogsett; Da-Lin Zhang

2009-09-01T23:59:59.000Z

477

Effect of Heat and Electricity Storage and Reliability on Microgrid Viability: A Study of Commercial Buildings in California and New York States  

E-Print Network (OSTI)

SOFC) .Viability PVPS R&D RT SCE SoCal SOFC tC TOU UL UPS VRB WACSolid-Oxide Fuel Cell (SOFC) SOFC is a promising technology

Stadler, Michael

2009-01-01T23:59:59.000Z

478

Effect of Heat and Electricity Storage and Reliability on Microgrid Viability: A Study of Commercial Buildings in California and New York States  

E-Print Network (OSTI)

SOFC)..Viability PVPS R&D RT SCE SoCal SOFC tC TOU UL UPS VRB WACSolid-Oxide Fuel Cell (SOFC) SOFC is a promising technology

Stadler, Michael

2009-01-01T23:59:59.000Z

479

An Assessment of a Model-, Grid-, and Basin-Independent Tropical Cyclone Detection Scheme in Selected CMIP3 Global Climate Models  

Science Conference Proceedings (OSTI)

A novel tropical cyclone (TC) detection technique designed for coarse-resolution models is tested and evaluated. The detector, based on the Okubo–Weiss–Zeta parameter (OWZP), is applied to a selection of Coupled Model Intercomparison Project, ...

K. J. Tory; S. S. Chand; R. A. Dare; J. L. McBride

2013-08-01T23:59:59.000Z

480

THE APPLICATION OF SOME HARTREE-FOCK MODEL CALCULATION TO THE ANALYSIS OF ATOMIC AND FREE-ION OPTICAL SPECTRA  

E-Print Network (OSTI)

the antisymmetrization projection operator, Y "' {m:tc{flic(defined: a is the projection operator for the antisymmetricthe n-electron operator is the projection of onto a space of

Hayhurst, Thomas Laine

2013-01-01T23:59:59.000Z

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481

Attribution of Projected Future Changes in Tropical Cyclone Passage Frequency over the Western North Pacific  

Science Conference Proceedings (OSTI)

This paper performs an attribution analysis of future changes in the frequency of tropical cyclone (TC) passages over the western North Pacific basin projected by seven general circulation models. The models project increases in the passage ...

Satoru Yokoi; Yukari N. Takayabu; Hiroyuki Murakami

2013-06-01T23:59:59.000Z

482

The Impact of Anthropogenic Climate Change on North Atlantic Tropical Cyclone Tracks  

Science Conference Proceedings (OSTI)

The authors examine the change in tropical cyclone (TC) tracks that results from projected changes in the large-scale steering flow and genesis location from increasing greenhouse gases. Tracks are first simulated using a Beta and Advection Model (...

Angela J. Colbert; Brian J. Soden; Gabriel A. Vecchi; Ben P. Kirtman

2013-06-01T23:59:59.000Z

483

Impacts of Atmospheric Temperature Trends on Tropical Cyclone Activity  

Science Conference Proceedings (OSTI)

Impacts of tropical temperature changes in the upper troposphere (UT) and the tropical tropopause layer (TTL) on tropical cyclone (TC) activity are explored. UT and lower TTL cooling both lead to an overall increase in potential intensity (PI), ...

Gabriel A. Vecchi; Stephan Fueglistaler; Isaac M. Held; Thomas R. Knutson; Ming Zhao

2013-06-01T23:59:59.000Z

484

An Evaluation of Tropical Cyclone Genesis Forecasts from Global Numerical Models  

Science Conference Proceedings (OSTI)

Tropical cyclone (TC) forecasts rely heavily on output from global numerical models. While considerable research has investigated the skill of various models with respect to track and intensity, few studies have considered how well global models ...

Daniel J. Halperin; Henry E. Fuelberg; Robert E. Hart; Joshua H. Cossuth; Philip Sura; Richard J. Pasch

2013-12-01T23:59:59.000Z

485

Global Identification of Previously Undetected Pre-Satellite-Era Tropical Cyclone Candidates in NOAA/CIRES Twentieth-Century Reanalysis Data  

Science Conference Proceedings (OSTI)

Prior to the satellite era, limited synoptic observation networks led to an indefinite number of tropical cyclones (TCs) remaining undetected. This period of decreased confidence in the TC climatological record includes the first two-thirds of the ...

Ryan E. Truchelut; Robert E. Hart; Briana Luthman

2013-10-01T23:59:59.000Z

486

Diagnosing Forecast Errors in Tropical Cyclone Motion  

Science Conference Proceedings (OSTI)

This paper reports on the development of a diagnostic approach that can be used to examine the sources of numerical model forecast error that contribute to degraded tropical cyclone (TC) motion forecasts. Tropical cyclone motion forecasts depend ...

Thomas J. Galarneau Jr.; Christopher A. Davis

2013-02-01T23:59:59.000Z

487

Assimilation of T-TREC-Retrieved Winds from Single-Doppler Radar with an Ensemble Kalman Filter for the Forecast of Typhoon Jangmi (2008)  

Science Conference Proceedings (OSTI)

A tropical cyclone (TC) circulation Tracking Radar Echo by Correlation technique (T-TREC) developed recently is applied to derive horizontal winds from single Doppler radar reflectivity Z data (combined with radial velocity Vr data when available)...

Mingjun Wang; Ming Xue; Kun Zhao; Jili Dong

488

Review of the Hanford Site Waste Treatment and Immobilization...  

NLE Websites -- All DOE Office Websites (Extended Search)

shall be returned to protected storage at the end of the shift. Research sponsored by the steel industry at the University of Toronto determined that the average pre-tensions in TC...

489

Spin liquids, exotic phases and phase transitions  

E-Print Network (OSTI)

Spin liquid, or featureless Mott-Insulator, is a theoretical state of matter firstly motivated from study on High-Tc superconductor. The most striking property of spin liquids is that they do not break any physical symmetry, ...

Ran, Ying

2007-01-01T23:59:59.000Z

490

Sparse Representations for Image Decomposition with ...  

Science Conference Proceedings (OSTI)

... Tc = I Bc ^ d: (9) ... (e),(f) Image decomposition for p = 2:0 and recognition is destroyed (this is equivalent to use correlations methods, like in the L 2 ...

491

Imaging the two gaps of the high temperature superconductor Pb-Bi?Sr?CuO??x  

E-Print Network (OSTI)

The nature and behavior of electronic states in high temperature superconductors are the center of much debate. The pseudogap state, observed above the superconducting transition temperature Tc, is seen by some as a precursor ...

Yi, Ming, S.M. Massachusetts Institute of Technology

2007-01-01T23:59:59.000Z

492

Forecasting Tropical Cyclone Formation in the Fiji Region: A Probit Regression Approach Using Bayesian Fitting  

Science Conference Proceedings (OSTI)

An objective methodology for forecasting the probability of tropical cyclone (TC) formation in the Fiji, Samoa, and Tonga regions (collectively the FST region) using antecedent large-scale environmental conditions is investigated. Three separate ...

Savin S. Chand; Kevin J. E. Walsh

2011-04-01T23:59:59.000Z

493

A Bayesian Regression Approach for Predicting Seasonal Tropical Cyclone Activity over the Central North Pacific  

Science Conference Proceedings (OSTI)

In this study, a Poisson generalized linear regression model cast in the Bayesian framework is applied to forecast the tropical cyclone (TC) activity in the central North Pacific (CNP) in the peak hurricane season (July–September) using large-...

Pao-Shin Chu; Xin Zhao

2007-08-01T23:59:59.000Z

494

On the Squall Lines Preceding Landfalling Tropical Cyclones in China  

Science Conference Proceedings (OSTI)

Based on a 3-yr (2007–09) mosaic of radar reflectivity and conventional surface and synoptic radiosonde observations, the general features of squall lines preceding landfalling tropical cyclones (TCs) (pre-TC) in China are examined and compared ...

Zhiyong Meng; Yunji Zhang

2012-02-01T23:59:59.000Z

495

An Improved Statistical Scheme for the Prediction of Tropical Cyclones Making Landfall in South China  

Science Conference Proceedings (OSTI)

This study describes an improved statistical scheme for predicting the annual number of tropical cyclones (TCs) making landfall along the coast of south China using data from 1965 to 2005. Based on the factors affecting TC behavior inside the ...

Andy Zung-Ching Goh; Johnny C. L. Chan

2010-04-01T23:59:59.000Z

496

The Impact of Tropical Remnants on Extratropical Cyclogenesis: Case Study of Hurricanes Danielle and Earl (1998)  

Science Conference Proceedings (OSTI)

The importance of remnant tropical cyclone (TC) circulation and moisture structures is investigated for a simultaneous extratropical transition (ET) event involving ex-Hurricanes Danielle and Earl (September 1998). Although both storms undergo ...

R. McTaggart-Cowan; J. R. Gyakum; M. K. Yau

2004-08-01T23:59:59.000Z

497

Cell Data Sheet Specification (Presentation)  

DOE Green Energy (OSTI)

The presentation shows a brief status report on the development of a specification being considered by IEC TC82 WG7 for a concentrator cell data sheet and solicits suggestions from the community.

Kurtz, S.

2012-03-01T23:59:59.000Z

498

Typhoon-Position-Oriented Sensitivity Analysis. Part I: Theory and Verification  

Science Conference Proceedings (OSTI)

A new sensitivity analysis method is proposed for the ensemble prediction system in which a tropical cyclone (TC) position is taken as a metric. Sensitivity is defined as a slope of linear regression (or its approximation) between state variable ...

Kosuke Ito; Chun-Chieh Wu

2013-08-01T23:59:59.000Z

499

Projected Smoking-Related Deaths Among U.S. Youth: A 2000 Update  

E-Print Network (OSTI)

Ellen J. Hahn University of Kentucky College of Nursing andMary Kay Rayens University of Kentucky College of NursingNBER Chizimuzo T.C. Okoli University of Kentucky College of

Hahn, Ellen J DNS, RN; Rayens, Mary Kay PhD; Chaloupka, Frank J. PhD; Okoli, Chizimuzo T.C. BSN, RN; Yang, Jun MS

2002-01-01T23:59:59.000Z

500

Distributed Surveillance and Control on Freeways  

E-Print Network (OSTI)

surveillance, Response time can be given as, RTd = Tw + Tc +T'n + Td + Tr Where, RTd = response time under distributeddecision processes. Hence, RTd - RTc = T'n - Tn T'n is the

Coifman, Benjamin

2004-01-01T23:59:59.000Z