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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

GASIFICATION TEST RUN TC06  

SciTech Connect

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

Southern Company Services, Inc.

2003-08-01T23:59:59.000Z

3

Iron Oxide Waste Form for Stabilizing 99Tc. | EMSL  

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

Stabilizing 99Tc. Iron Oxide Waste Form for Stabilizing 99Tc. Abstract: Crystals of goethite were synthesized with reduced technetium 99Tc(IV) incorporated within the solid...

4

Nuclear shape and structure in neutron-rich 110,111Tc  

E-Print Network (OSTI)

Band 6 built on the 11/2 +2 state Eexc ( MeV) Rh Rh Rh Rh TcTcTc Tc S(I) EXPT. RTRP Spin(I) Signature Splitting S(I) Tc Tc

2006-01-01T23:59:59.000Z

5

Tc-99 Ion Exchange Resin Testing  

SciTech Connect

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

6

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

SciTech Connect

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

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

2014-01-01T23:59:59.000Z

7

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

8

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

9

Geometric and Electronic Structures of Tc and Mn Clusters by Density Functional Calculations  

Science Journals Connector (OSTI)

The geometric structures of Tc2-Tc5 and Mn2-Mn8 clusters were optimized by the Amsterdam density functional method. The trimeric, tetrameric, and pentameric Tc clusters exhibit the equilibrium structures of isosc...

R. Sekine; R. Kondo; T. Yamamoto; J. Onoe

2003-05-01T23:59:59.000Z

10

E-Print Network 3.0 - areneisonitrile tc complex Sample Search...  

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

3 Econ 101, Microeconomics 3 AESHM 111... Sophomore Fall Spring TC 245, Aesthetics and Brand Image 3 TC Humanities Elective ... Source: Iowa State University, Office of...

11

Tc and Re Behavior in Borosilicate Waste Glass Vapor Hydration Tests  

E-Print Network (OSTI)

Kot, W.K. ; Pegg, I.L. Tc-Cs Volatility in DM100 Tests Usingand x-ray structure of a new Tc(IV) oxalato complex: K 4 [(C 2 O 4 ) 2 Tc(µ-O) 2 Tc(C 2 O 4 )]•3H 2 O Inorg. Chim. Acta

McKeown, David A.; Buechele, Andrew C.; Lukens, Wayne W.; Shuh, David K.; Pegg, Ian L.

2006-01-01T23:59:59.000Z

12

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?"

13

Iron phosphate glass for immobilization of 99Tc  

SciTech Connect

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

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

2013-06-15T23:59:59.000Z

14

Power Systems Development Facility Gasification Test Run TC09  

SciTech Connect

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

Southern Company Services

2002-09-30T23:59:59.000Z

15

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

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

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 -...

16

Oxidative Dissolution Potential of Biogenic and Abiogenic TcO2...  

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

Potential of Biogenic and Abiogenic TcO2 in Subsurface Sediments. Oxidative Dissolution Potential of Biogenic and Abiogenic TcO2 in Subsurface Sediments. Abstract: Technetium-99...

17

Simultaneous ??m?Tc-MDP/¹²³I-MIBG imaging of neuroblastoma using SPECT-CT  

E-Print Network (OSTI)

Simultaneous ??m??Tc-MDP/ ¹²³I-MIBG SPECT has the potential to replace current clinical sequential acquisitions of ??m?Tc-MDP and ¹²³-MIBG SPECT studies, and therefore has great potential to reduce imaging time, sedation ...

Pérez-Gutiérrez, José P. (José Pablo Andrés)

2011-01-01T23:59:59.000Z

18

Reductive Sequestration Of Pertechnetate (99TcO4–) By Nano...  

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

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

19

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?

20

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

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

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?

22

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?

23

Power Systems Development Facility Gasification Test Campaing TC14  

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 TC14 of the PSDF gasification process. TC14 began on February 16, 2004, and lasted until February 28, 2004, accumulating 214 hours of operation using Powder River Basin (PRB) subbituminous coal. The gasifier operating temperatures varied from 1760 to 1810 F at pressures from 188 to 212 psig during steady air blown operations and approximately 160 psig during oxygen blown operations.

Southern Company Services

2004-02-28T23:59:59.000Z

24

Power Systems Development Facility Gasification Test Campaign TC24  

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 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

25

Power Systems Development Facility Gasification Test Run TC08  

SciTech Connect

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

Southern Company Services

2002-06-30T23:59:59.000Z

26

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

27

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

28

Dark Energy Stars, AdS/CFT, and High Tc  

E-Print Network (OSTI)

As developed previously the physical behavior of space-time near to an event horizon can be surmised from the behavior of a superfluid near to a critical point where the speed of sound vanishes. In this talk we note that this critical behavior can be given a geometrical interpretation by regarding the tuning parameter as a radial coordinate for anti-de Sitter space. We also draw attention to a mathematical model for a layered conductor with strong spin-orbit interactions which provides a physical explanation for why the behavior of space-time near an event horizon is related to the behavior of high Tc superconductors.

George Chapline

2010-02-24T23:59:59.000Z

29

Power Systems Development Facility Gasification Test Run TC10  

SciTech Connect

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

Southern Company Services

2002-12-30T23:59:59.000Z

30

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

Open Energy Info (EERE)

Sector: Services Product: General Financial & Legal Services ( Academic Research foundation ) References: Fundao Parque Tecnolgico da Paraiba (PaqTc Incubator)1 This...

31

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

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

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

32

Quantification of the Interaction of Tc with Dissolved Boom Clay Humic Substances  

Science Journals Connector (OSTI)

To elucidate the Tc geochemical behavior in reducing environments relevant to geological disposal and in the presence of humic substances (HS), experiments were set up that resulted for the first time in the determination of an interaction constant for Tc with dissolved humic substances. ... A number of lab-scale Boom Clay (a possible geological underground High-Level Radioactive Waste storage site in Mol, Belgium) batch experiments were set up, combining both different initial Tc(VII) concentrations and different solid/liquid ratios. ... Appendix:? Reactions and Stability Constants for Tc in a Reducing Environment ...

A. Maes; C. Bruggeman; K. Geraedts; J. Vancluysen

2003-01-18T23:59:59.000Z

33

Power Systems Development Facility Gasification Test Run TC11  

SciTech Connect

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

34

Power Systems Development Facility Gasification Test Campaign TC16  

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 (formerly Kellogg Brown & Root) Transport Gasifier, a hot gas particulate control device, advanced syngas cleanup systems, and high-pressure solids handling systems. This report discusses Test Campaign TC16 of the PSDF gasification process. TC16 began on July 14, 2004, lasting until August 24, 2004, for a total of 835 hours of gasification operation. The test campaign consisted of operation using Powder River Basin (PRB) subbituminous coal and high sodium lignite from the North Dakota Freedom mine. The highest gasifier operating temperature mostly varied from 1,760 to 1,850 F with PRB and 1,500 to 1,600 F with lignite. Typically, during PRB operations, the gasifier exit pressure was maintained between 215 and 225 psig using air as the gasification oxidant and between 145 and 190 psig while using oxygen as the oxidant. With lignite, the gasifier operated only in air-blown mode, and the gasifier outlet pressure ranged from 150 to 160 psig.

Southern Company Services

2004-08-24T23:59:59.000Z

35

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)

is assigned to P1, the phosphorous atom close to the TcV center, and the remote phosphorous, P2, is assigned to thethe distance to the phosphorous at next nearest W atoms are

McGregor, Donna

2011-01-01T23:59:59.000Z

36

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

37

The Magnetic Excitation Spectrum and Thermodynamics of High-Tc Superconductors  

Science Journals Connector (OSTI)

...1126/science.284.5418.1344 Pengcheng Dai H. A. Mook S. M. Hayden G. Aeppli...Thermodynamics of High-Tc Superconductors Pengcheng Dai, 1* H. A. Mook, 1 S...Thermodynamics of High-Tc Superconductors Pengcheng Dai, 1* H. A. Mook, 1 S. M. Hayden...

Pengcheng Dai; H. A. Mook; S. M. Hayden; G. Aeppli; T. G. Perring; R. D. Hunt; F. Do?an

1999-05-21T23:59:59.000Z

38

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

39

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

40

99Mo/99mTc separation: An assessment of technology options  

Science Journals Connector (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.

Ashutosh Dash; F.F. (Russ) Knapp Jr.; M.R.A. Pillai

2013-01-01T23:59:59.000Z

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.


41

Distribution of Tc-99m administered as labeled microspheres for lung imaging  

SciTech Connect

We have measured the distribution of Tc-99m in 36 patients receiving labeled microspheres for routine lung imaging studies. Quantitative organ measurements were made by conjugate counting with an Anger camera at various times for 24 hours. Initial uptake was all in lung as expected. Removal of Tc-99m from lung was principally by elution of activity as TcO/sub 4//sup -/ rather than by breakup of the microspheres. Calculated radiation doses in mrad/mCi were as follows: lung, 229; kidney, 138; stomach, 72; thyroid, 72; and bladder wall, 40. Doses to other tissues were all below 40 mrads/mCi.

Wicks, R.; Rosenspire, K.; Ackerhalt, R.; Langan, M.; Steinbach, J.J.; Blau, M.

1981-06-01T23:59:59.000Z

42

Power Systems Development Facility Gasification Test Campaign TC20  

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 coal. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a Transport Gasifier, a hot gas particulate control device (PCD), advanced syngas cleanup systems, and high-pressure solids handling systems. This report summarizes the results of the first demonstration of the Transport Gasifier following significant modifications of the gasifier configuration. This demonstration took place during test campaign TC20, occurring from August 8 to September 23, 2006. The modifications proved successful in increasing gasifier residence time and particulate collection efficiency, two parameters critical in broadening of the fuel operating envelope and advancing gasification technology. The gasification process operated for over 870 hours, providing the opportunity for additional testing of various gasification technologies, such as PCD failsafe evaluation and sensor development.

Southern Company Services

2006-09-30T23:59:59.000Z

43

Power Systems Development Facility Gasification Test Campaign TC17  

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 (formerly Kellogg Brown & Root) Transport Gasifier, a hot gas particulate control device, advanced syngas cleanup systems, and high-pressure solids handling systems. This report summarizes the results gasification operation with Illinois Basin bituminous coal in PSDF test campaign TC17. The test campaign was completed from October 25, 2004, to November 18, 2004. System startup and initial operation was accomplished with Powder River Basin (PRB) subbituminous coal, and then the system was transitioned to Illinois Basin coal operation. The major objective for this test was to evaluate the PSDF gasification process operational stability and performance using the Illinois Basin coal. The Transport Gasifier train was operated for 92 hours using PRB coal and for 221 hours using Illinois Basin coal.

Southern Company Services

2004-11-30T23:59:59.000Z

44

10 th IMEKO TC7 International Symposium June 30--July 2, 2004, SaintPetersburg, Russia  

E-Print Network (OSTI)

10 th IMEKO TC7 International Symposium June 30--July 2, 2004, Saint­Petersburg, Russia GROUP Science, Arizona State University, Tempe, USA 4 State Technical Univ. of St. Petersburg, Russia Abstract

Kreinovich, Vladik

45

IMEKO TC7 International Symposium June 30July 2, 2004, Saint-Petersburg, Russia  

E-Print Network (OSTI)

10th IMEKO TC7 International Symposium June 30­July 2, 2004, Saint-Petersburg, Russia GROUP State University, Tempe, USA 4 State Technical Univ. of St. Petersburg, Russia Abstract. When describing

Kreinovich, Vladik

46

IMEKO TC7 International Symposium June 30July 2, 2004, Saint-Petersburg, Russia  

E-Print Network (OSTI)

10th IMEKO TC7 International Symposium June 30­July 2, 2004, Saint-Petersburg, Russia PROBABILITIES Computer Science, University of Texas, El Paso, USA 2 State Technical Univ. of St. Petersburg, Russia 3

Kreinovich, Vladik

47

th IMEKO TC7 International Symposium June 30--July 2, 2004, SaintPetersburg, Russia  

E-Print Network (OSTI)

10 th IMEKO TC7 International Symposium June 30--July 2, 2004, Saint­Petersburg, Russia. Petersburg, Russia 3 Applied Biomathematics, 100 North Country Road, Setauket, NY 11733, USA 4 University

Kreinovich, Vladik

48

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

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

(PFR) Firstgov WP-96TR-96 & TC-96 Power and Transmission Rate Case Index: Final 1996 Wholesale Power and Transmission Rates Proposal (WP-96TR-96) Administrator's Record Of...

49

E-Print Network 3.0 - au mibi-tc 99m Sample Search Results  

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

Mathematics 32 Small-animal models and imaging studies in CGRI Summary: ;Surgery LCA Occlusion LCA Re-flow 99mTc LCA Re-occlusion Evans blue TTC Test Imaging 0 90 120 240...

50

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

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

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...

51

Production and survival of /sup 99/Tc in He-shell recurrent thermal pulses  

SciTech Connect

After a brief introduction to the present state of art of nuclear beta-decay studies in astrophysics, we report our recent work on the long-standing /sup 99/Tc problem. Having combined a detailed study of the recurrent He-shell thermal-pulse, third dredge-up episodes in a 2.25 M/sub solar/ star and an s-process network calculation, we show that a substantial amount of /sup 99/Tc can be produced by the s-process and can survive to be dredged up to the stellar surface. We stress that the factual observation of /sup 99/Tc at the surface of certain stars does not necessarily preclude the /sup 22/Ne(..cap alpha..,n)/sup 25/Mg reaction from remaining as the neutron source for the s-process. The calculated surface abundances of /sup 99/Tc and elements with neighboring atomic numbers are compared with observations. 43 refs., 5 figs.

Takahashi, K.; Mathews, G.J.; Ward, R.A.; Becker, S.A.

1985-05-30T23:59:59.000Z

52

A Study on a High-Tc Superconducting Fault Current Limiter  

Science Journals Connector (OSTI)

The application of a high-Tc superconductor with a high critical current density (Jc) to a fault current limiter has been investigated. When the superconductor changes ... , it has a resistance which can limit fault

Tatsuya Hayashi; Teijiro Mori; Yuuichi Wada…

1992-01-01T23:59:59.000Z

53

1.2 MVA High-Tc Superconducting Fault Current Limiter  

Science Journals Connector (OSTI)

A 3-phase high Tc superconducting fault current limiter with a rated power of 1.2 ... a special partial melt process. The nominal current and voltage of the device are 70 ... 3-phase short circuit tests with a pr...

W. Paul; M. Chen; M. Lakner; J. Rhyner; L. Widenhorn…

1998-01-01T23:59:59.000Z

54

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

E-Print Network (OSTI)

TC-1 (5/20/14) 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

55

Reduction of Tc(VII) by Fe(II) Sorbed on Al (hydr)oxides. | EMSL  

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

by Fe(II) Sorbed on Al (hydr)oxides. Abstract: Technetium speciation, solubility and sorption behavior is strongly dependent on its valence state. Under oxic conditions, Tc exists...

56

Reduction of pertechnetate [Tc(VII)] by aqueous Fe(II) and the nature of solid phase redox products  

Science Journals Connector (OSTI)

The subsurface behaviour of 99Tc, a contaminant resulting from nuclear fuels reprocessing, is dependent on its valence (e.g., IV or VII). Abiotic reduction of soluble Tc(VII) by Fe(II)(aq) in pH 6–8 solutions was investigated under strictly anoxic conditions using an oxygen trap (<7.5 × 10?9 atm O2). The reduction kinetics were strongly pH dependent. Complete and rapid reduction of Tc(VII) to a precipitated Fe/Tc(IV) form was observed when 11 ?mol/L of Tc(VII) was reacted with 0.4 mmol/L Fe(II) at pH 7.0 and 8.0, while no significant reduction was observed over 1 month at pH 6.0. Experiments conducted at pH 7.0 with Fe(II)(aq) = 0.05–0.8 mmol/L further revealed that Tc(VII) reduction was a combination of homogeneous and heterogeneous reaction. Heterogeneous reduction predominated after approximately 0.01 mmol/L of Fe(II) was oxidized. The heterogeneous reaction was more rapid, and was catalyzed by Fe(II) that adsorbed to the Fe/Tc(IV) redox product. Wet chemical and Fe–X-ray absorption near edge spectroscopy measurements (XANES) showed that Fe(II) and Fe(III) were present in the Fe/Tc(IV) redox products after reaction termination. 57Fe-Mössbauer, extended X-ray adsorption fine structure (EXAFS), and transmission electron microscopy (TEM) measurements revealed that the Fe/Tc(IV) solid phase was poorly ordered and dominated by Fe(II)-containing ferrihydrite with minor magnetite. Tc(IV) exhibited homogeneous spatial distribution within the precipitates. According to Tc-EXAFS measurements and structural modeling, its molecular environment was consistent with an octahedral Tc(IV) dimer bound in bidentate edge-sharing mode to octahedral Fe(III) associated with surface or vacancy sites in ferrihydrite. The precipitate maintained Tc(IV)aq concentrations that were slightly below those in equilibrium with amorphous Tc(IV)O2·nH2O(s). The oxidation rate of sorbed Tc(IV) in the Fe/Tc precipitate was considerably slower than Tc(IV)O2·nH2O(s) as a result of its intraparticle/intragrain residence. Precipitates of this nature may form in anoxic sediments or groundwaters, and the intraparticle residence of sorbed/precipitated Tc(IV) may limit 99Tc remobilization upon the return of oxidizing conditions.

John M. Zachara; Steve M. Heald; Byong-Hun Jeon; Ravi K. Kukkadapu; Chongxuan Liu; James P. McKinley; Alice C. Dohnalkova; Dean A. Moore

2007-01-01T23:59:59.000Z

57

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

58

Heterogeneous reduction of Tc(VII) by Fe(II) at the solid–water interface  

Science Journals Connector (OSTI)

Experiments were performed herein to investigate the rates and products of heterogeneous reduction of Tc(VII) by Fe(II) adsorbed to hematite and goethite, and by Fe(II) associated with a dithionite–citrate–bicarbonate (DCB) reduced natural phyllosilicate mixture [structural, ion-exchangeable, and edge-complexed Fe(II)] containing vermiculite, illite, and muscovite. The heterogeneous reduction of Tc(VII) by Fe(II) adsorbed to the Fe(III) oxides increased with increasing pH and was coincident with a second event of Fe 2 + (aq) adsorption. The reaction was almost instantaneous above pH 7. In contrast, the reduction rates of Tc(VII) by DCB-reduced phyllosilicates were not sensitive to pH or to added Fe 2 + (aq) that adsorbed to the clay. The reduction kinetics were orders of magnitude slower than observed for the Fe(III) oxides, and appeared to be controlled by structural Fe(II). The following affinity series for heterogeneous Tc(VII) reduction by Fe(II) was suggested by the experimental results: aqueous Fe(II) ? adsorbed Fe(II) in phyllosilicates [ion-exchangeable and some edge-complexed Fe(II)] ? structural Fe(II) in phyllosilicates ? Fe(II) adsorbed on Fe(III) oxides. Tc-EXAFS spectroscopy revealed that the reduction products were virtually identical on hematite and goethite that were comprised primarily of sorbed octahedral TcO2 monomers and dimers with significant Fe(III) in the second coordination shell. The nature of heterogeneous Fe(III) resulting from the redox reaction was ambiguous as probed by Tc-EXAFS spectroscopy, although Mössbauer spectroscopy applied to an experiment with 56Fe-goethite with adsorbed 57Fe(II) implied that redox product Fe(III) was goethite-like. The Tc(IV) reduction product formed on the DCB-reduced phyllosilicates was different from the Fe(III) oxides, and was more similar to Tc(IV) oxyhydroxide in its second coordination shell. The heterogeneous reduction of Tc(VII) to less soluble forms by Fe(III) oxide-adsorbed Fe(II) and structural Fe(II) in phyllosilicates may be an important geochemical process that will proceed at very different rates and that will yield different surface species depending on subsurface pH and mineralogy.

T. Peretyazhko; J.M. Zachara; S.M. Heald; B.-H. Jeon; R.K. Kukkadapu; C. Liu; D. Moore; C.T. Resch

2008-01-01T23:59:59.000Z

59

Near-yrast, medium-spin structure of the {sup 109}Tc nucleus  

SciTech Connect

Excited levels in the {sup 109}Tc nucleus, populated in the spontaneous fission of {sup 248}Cm, have been studied using the EUROGAM2 array. In {sup 109}Tc we have found a new band corresponding to the {pi}5/2{sup -}[303] configuration and a three-quasiparticle band with I{sup {pi}}=(15/2{sup -}) band-head level at 1749.5 keV. The structure of the 1749.5-keV level probably involves the {l_brace}{pi}5/2{sup +}[422]{nu}(5/2{sup -}[532],5/2{sup +}[413]){r_brace}{sub 15/2}{sup -} prolate configuration. The quasiparticle-rotor model calculations performed in this work show that the odd-proton configurations observed in {sup 107}Tc and {sup 109}Tc are consistent with the scheme of proton excitations in a prolate triaxial potential. Significant differences between the degree of triaxiality observed for positive- and negative-parity excitations may be due to blocking of the triaxial shape by the odd proton populating negative-parity orbitals. The properties of the new 494.5-, 1440.7-, and 1748.8-keV levels found in {sup 109}Tc may indicate a change toward an oblate shape in this nucleus.

Urban, W. [Institut Laue-Langevin, 6 rue J. Horowitz, F-38042 Grenoble Cedex 9 (France); Faculty of Physics, University of Warsaw, ul. Hoza 69, PL-00-681 Warsaw (Poland); Pinston, J. A. [Laboratoire de Physique Subatomique et de Cosmologie, Universite Joseph Fourier Grenoble 1, Centre National de la Recherche Scientifique/Institut National de Physique Nuclaire et de Physique des Particules, Institut National Polytechnique de Grenoble, F-38026 Grenoble Cedex (France); Rzaca-Urban, T.; Kurpeta, J. [Faculty of Physics, University of Warsaw, ul. Hoza 69, PL-00-681 Warsaw (Poland); Smith, A. G. [School of Physics and Astronomy, University of Manchester, Manchester M13 9PL (United Kingdom); Ahmad, I. [Argonne National Laboratory, Argonne, Illinois 60439 (United States)

2010-12-15T23:59:59.000Z

60

Coextraction behavior of Tc(VII) and U(VI) by CMPO  

SciTech Connect

The coextraction behavior of technetium(VII) and uranium(VI) from nitric acid solution by n-octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO) in the absence or presence of tributyl phosphate (TBP) was investigated. The extraction of technetium was remarkably enhanced in the presence of uranium at less than 0.1M nitric acid concentration, and with the initial concentration ratio of [U]/[Tc] = 50 in the aqueous phase, the distribution coefficient of Tc(VII) at 0.01M nitric acid was about one hundred times greater than that obtained in the absence of uranium. The coextraction of technetium and uranium was presumed to occur due to the same ion exchange mechanism as reported in the Tc-U-TBP system. However, the effect of TBP on this coextraction was not observed in the present study. 17 refs., 8 figs.

Takeuchi, Mitsuo; Tanaka, Satoru; Yamawaki, Michio (Univ. of Tokyo, Ibaraki (Japan)); Tachimori, Shoichi (Japan Atomic Energy Research Inst., Ibaraki (Japan))

1995-01-01T23:59:59.000Z

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.


61

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

E-Print Network (OSTI)

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

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

1971-01-01T23:59:59.000Z

62

Status of Trivalent Copper and Charge-Transfer Excitons in High-TC Cuprates  

Science Journals Connector (OSTI)

(29) Because such an explanation does not seem very convincing to us, we carried out a MO calculation by the extended Hückel tight-binding method (EHTB) (30) for a (CuO4)5? square-planar cluster using the atomic orbital energies given in Table 1. ... Orbital Energy Parameters (from Ref 9) Used in EHTB Calculations for the (CuO4)5? Cluster ... The energy gap goes from 3.5 kTc at 0°K. to 0 at Tc. Matrix element tables for use with the theory are given. ...

Michel Pouchard; Jean-Pierre Doumerc; Antoine Villesuzanne

2008-09-29T23:59:59.000Z

63

Superconductive fluctuations in the density of states and tunneling resistance in high-Tc superconductors  

Science Journals Connector (OSTI)

The effect of superconductive fluctuations on the density of states and tunneling resistance is revisited in the case of dirty superconductors and derived for clean samples with and without pair-breaking sources. For clean superconductors new features appear in the density of states. In particular, with respect to the commonly known dirty case, the fluctuation effects manifest themselves on a new scale of energy with a different power-law behavior as function of T-Tc. The relevance of these results for high-Tc superconductors is analyzed.

C. Di Castro, R. Raimondi, C. Castellani, and A. A. Varlamov

1990-12-01T23:59:59.000Z

64

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

E-Print Network (OSTI)

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

Singer, Randall

65

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

66

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

67

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

68

"Phun" with Photoelectrons What Sets the Tc in Cuprate High-Temperature Superconductors?  

E-Print Network (OSTI)

"Phun" with Photoelectrons or What Sets the Tc in Cuprate High-Temperature Superconductors? Dan famous and exotic of correlated electron materials are high-temperature cuprate superconductors, which the pair-breaking energy scale . In contrast to conventional superconductors in which the superconducting

Glashausser, Charles

69

E-Print Network 3.0 - arthrobacter aurescens tc1 Sample Search...  

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

of Environmental Shot-gun Sequences Summary: 12 12;Species composition GC content pA pAA pAC pAT pCA pCG pGC Arthrobacter aurescens TC1 63% 0... Bin accuracy CB seeds...

70

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.

71

Total absorption study of the ? decay of 102,104,105Tc  

Science Journals Connector (OSTI)

The ?-feeding probabilities for three important contributors to the decay heat in nuclear reactors, namely 102,104,105Tc, have been measured using the total absorption spectroscopy technique. For the measurements, sources of very high isobaric purity have been obtained using a Penning trap (JYFLTRAP). A detailed description of the data analysis is given and the results are compared with high-resolution measurements and theoretical calculations.

D. Jordan et al.

2013-04-11T23:59:59.000Z

72

On The Generalised Random Energy Model T.C. Dorlas & W.M.B. Dukes  

E-Print Network (OSTI)

by ZN () = 2N i=1 e-Ei , the energy levels of the generalised model have a tree-like structure. The tree Energy Model Page 2 of 9 D a b d e f j h1 p q r A B C Figure 1: The tree-like structure of the GREMOn The Generalised Random Energy Model T.C. Dorlas & W.M.B. Dukes School of Theoretical Physics

Dorlas, Teunis C.

73

Solar analogs with and without planets: $T_C$ trends and galactic evolution  

E-Print Network (OSTI)

We explore a sample of 148 solar-like stars to search for a possible correlation between the slopes of the abundance trends versus condensation temperature (known as the Tc slope) both with stellar parameters and Galactic orbital parameters in order to understand the nature of the peculiar chemical signatures of these stars and the possible connection with planet formation. We find that the Tc slope correlates at a significant level with the stellar age and the stellar surface gravity. We also find tentative evidence that the Tc slope correlates with the mean galactocentric distance of the stars (Rmean), suggesting that stars that originated in the inner Galaxy have fewer refractory elements relative to the volatile ones. We found that the chemical peculiarities (small refractory-to-volatile ratio) of planet-hosting stars is probably a reflection of their older age and their inner Galaxy origin. We conclude that the stellar age and probably Galactic birth place are key to establish the abundances of some spec...

Adibekyan, V Zh; Mena, E Delgado; Sousa, S G; Figueira, P; Santos, N C; Israelian, G

2015-01-01T23:59:59.000Z

74

Hall effect and resistivity in high-Tc superconductors: The conserving approximation  

Science Journals Connector (OSTI)

The Hall coefficient RH in high-Tc cuprates in the normal state shows the striking non-Fermi-liquid behavior: RH follows a Curie-Weiss type temperature dependence and |RH|?1/|ne| at low temperatures in the underdoped compounds. Moreover, RH is positive for hole-doped compounds and negative for electron-doped ones, although each of them has a similar holelike Fermi surface. In this paper, we give the explanation of this long-standing problem from the standpoint of the nearly antiferromagnetic (AF) Fermi liquid. We consider seriously the vertex corrections for the current which are indispensable to satisfy the conservation laws, which are violated within the conventional Boltzmann transport approximation. The obtained total current Jk takes an enhanced value and is no longer perpendicular to the Fermi surface due to the strong AF fluctuations. By virtue of this mechanism, the anomalous behaviors of RH in high-Tc cuprates are naturally explained. Both the temperature and the (electron, hole) doping dependences of RH in high-Tc cuprates are reproduced well by numerical calculations based on the fluctuation-exchange approximation, applied to the single-band Hubbard model with a holelike Fermi surface. We also discuss the singular temperature dependence of RH in other nearly AF metals, e.g., V2O3, ?-BEDT-TTF organic superconductors, and heavy fermion systems close to the AF phase boundary.

Hiroshi Kontani; Kazuki Kanki; Kazuo Ueda

1999-06-01T23:59:59.000Z

75

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

SciTech Connect

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

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

Lifetime study of particle-hole excitations in the semimagic nucleus 93Tc  

Science Journals Connector (OSTI)

The recoil-distance Doppler-shift technique was employed for determining lifetimes of high-spin states in the semimagic nucleus 93Tc. The nuclei were populated using the reaction 64Zn(35Cl, ?2p) at a beam energy of 135 MeV, and the ? radiation from their decay was detected in the GASP spectrometer. A total of 26 reduced transition probabilities and limits for 19 further transitions were extracted and compared to large-scale shell model calculations, considering different configuration spaces and residual interactions. The information deduced about transition strengths turned out to be essential for the correct assignment of the calculated to the experimental excited states.

M. Hausmann; A. Jungclaus; E. Galindo; K. P. Lieb; O. Yordanov; I. P. Johnstone; R. Schwengner; A. Dewald; A. Fitzler; O. Möller; G. de Angelis; A. Gadea; T. Martinez; D. R. Napoli; C. Ur

2003-08-18T23:59:59.000Z

78

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

2005-12-16T23:59:59.000Z

79

Operating principle of a high Tc superconducting saturable magnetic core fault current limiter  

Science Journals Connector (OSTI)

An electrical fault current limiter (FCL) designed with a high Tc superconducting (HTS) dc bias winding is described. The winding is prepared by using a Ag-clad (Bi,Pb)2Sr2Ca2Cu3O10+x HTS wire. The limiting behaviour of this FCL is investigated and considered with respect to operation in a 6 kV power system. The results show that the FCL limits fault currents effectively, and is a possible solution for reducing power system fault currents.

J.X. Jin; S.X. Dou; C. Grantham; D. Sutanto; H.K. Liu

1997-01-01T23:59:59.000Z

80

Tunneling in all-high-Tc edge junctions with deposited barriers  

Science Journals Connector (OSTI)

All-high-Tc-material edge junctions consisting of laser-ablated Y-Ba-Cu-O electrodes and an in situ rf-sputter-deposited MgO barrier have been fabricated whose I-V characteristics show tunneling-related effects. These include a junction resistance with an exponential dependence on the nominal-barrier thickness, gaplike structure observed in the conductance curves, and Josephson effects. These properties are very sensitive to the choice of materials-processsing method for the junction interfaces.

R. B. Laibowitz, R. P. Robertazzi, R. H. Koch, A. Kleinsasser, J. R. Kirtley, J. M. Viggiano, R. L. Sandstrom, and W. J. Gallagher

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.


81

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

SciTech Connect

Purpose: 99mTc-iminodiacetic acid (IDA) hepatobiliary imaging is usually quantified for hepatic function on the entire liver or regions of interest (ROIs) in the liver. The authors presented a method to estimate the hepatic extraction fraction (HEF) voxel-by-voxel from single-photon emission computed tomography (SPECT)/CT with a 99mTc-labeled IDA agent of mebrofenin and evaluated the spatially resolved HEF measurements with an independent physiological measurement.Methods: Fourteen patients with intrahepatic cancers were treated with radiation therapy (RT) and imaged by 99mTc-mebrofenin SPECT before and 1 month after RT. The dynamic SPECT volumes were with a resolution of 3.9 × 3.9 × 2.5 mm{sup 3}. Throughout the whole liver with approximate 50 000 voxels, voxelwise HEF quantifications were estimated and compared between using arterial input function (AIF) from the heart and using vascular input function (VIF) from the spleen. The correlation between mean of the HEFs over the nontumor liver tissue and the overall liver function measured by Indocyanine green clearance half-time (T1/2) was assessed. Variation of the voxelwise estimation was evaluated in ROIs drawn in relatively homogeneous regions of the livers. The authors also examined effects of the time range parameter on the voxelwise HEF quantification.Results: Mean of the HEFs over the liver estimated using AIF significantly correlated with the physiological measurement T1/2 (r= 0.52, p= 0.0004), and the correlation was greatly improved by using VIF (r= 0.79, p < 0.0001). The parameter of time range for the retention phase did not lead to a significant difference in the means of the HEFs in the ROIs. Using VIF and a retention phase time range of 7–30 min, the relative variation of the voxelwise HEF in the ROIs was 10%± 6% of respective mean HEF.Conclusions: The voxelwise HEF derived from 99mTc-IDA SPECT by the deconvolution analysis is feasible to assess the spatial distribution of hepatic function in the liver.

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

2013-09-15T23:59:59.000Z

82

Liquid chromatographic characterization and biological distribution studies on sup 99m Tc-phosphonoacetic acid skeletal imaging agents  

SciTech Connect

Titration of the free ligand with standard base gives pK{sub a} values of 1.55, 4.75, and 8.15. Tc-PAA complex mixtures formulated with a range of pH values that present different ligand protonation states in the presence and absence of oxygen with carrier and no-carrier added conditions were analyzed by the optimized HPLC procedure. The three reaction parameters pH, presence of oxygen, and concentration of Tc control the number of complexes formed and their distribution in the mixtures. Selected reaction mixtures of {sup 99m}Tc(NaBH{sub 4})-PAA complexes and some of their chromatographically isolated components were evaluated for their skeletal imaging and biodistributions in normal rats. These mixtures as well as their individual separated components have lower bone uptake and higher soft tissue uptake than technetium radiopharmaceuticals made with diphosphonate ligands. Unlike Tc-diphosphonates, Tc-PAA complexes clear the skeleton as well as other tissues with time.

Abdelnasser, M.A.

1988-01-01T23:59:59.000Z

83

On the sensitivity of jet quenching to near T_C enhancement of the medium opacity  

E-Print Network (OSTI)

One of the main goals of the study of high transverse momentum (P_T) observables in the context of ultrarelativisic heavy-ion collisions is the determination of properties of the produced QCD matter. In particular, the transport coefficients qhat and ehat, characterizing the interaction of the medium with a high p_T parton, are accessible via high P_T probes. However, a precision extraction of their temperature dependence from current data faces the problem that neither the spacetime geometry of the evolving matter droplet nor the link between thermodynamics and transport coefficients is unambiguously known, and various conjectured scenarios how thermodynamics and transport coefficients behave close to the phase transition exist. While often a behaviour with the energy density qhat ~ epsilon^3/4 is assumed which leads to a parametric decrease of the scaled qhat(T)/T^3 close to the critical temperature T_C, other scenarios expect instead a near T_C enhancement of jet quenching. In this work, the systematic res...

Renk, Thorsten

2014-01-01T23:59:59.000Z

84

Temperature Instability in High-Tc Superconducting Wire Exposed to Thermal Disturbance  

Science Journals Connector (OSTI)

Abstract High-Tc superconductor wires/ conductors of longer lengths have emerged as one of the most promising candidates for several useful applications such as in utilities and in current lead powering large magnet system. These conductors are liquid nitrogen cooled and are much cheaper to operate. In the event of intrinsic thermal instability or cooling failure, irreversible transition to normal state may occur. These normal zones may propagate rapidly enough to cause transient heating leading to local ‘hot spot’ and resulting in damage to the conductor/ magnet. In this paper, the mathematical formulation to determine the temperature distribution throughout the superconductor wire subjected to such transient disturbance is illustrated. The solution to the problem is achieved by using the method of separation of variables based on physically relevant initial conditions. The results are obtained in the series form in terms of Bessel's functions and are illustrated numerically for a technical yttrium barium copper oxide (YBCO) superconductor wire. Also it is found that even for a steady state heat transfer of 500 W m–2 K–1, the conductor temperature rises above Tc in less than 10 sec of the thermal disturbance.

Ziauddin Khan; Subrata Pradhan; Irfan Ahmed

2014-01-01T23:59:59.000Z

85

Atomic scale 0-pi transition in a high-Tc superconductor/ferromagnetic-insulator/high-T superconductor Josephson junction  

E-Print Network (OSTI)

We study the Josephson transport in a high-Tc superconductor/ferromagnetic-insulator(FI)/high-Tc superconductor numerically. We found the formation of a pi-junction in such systems. More remarkably the ground state of such junction alternates between 0- and pi-states when thickness of FI is increasing by a single atomic layer. We propose an experimental setup for observing the atomic-scale 0-pi transition. Such FI-based pi-junctions can be used to implement highly-coherent quantum bits.

Kawabata, Shiro; Asano, Yasuhiro

2011-01-01T23:59:59.000Z

86

Intro Integrals of Motion and S Matrix Computation of Masses and S Matrix of Magnetic Critical Ising Model Conclusion Solving 2D Magnetic Ising Model at T = Tc  

E-Print Network (OSTI)

Ising Model Conclusion Solving 2D Magnetic Ising Model at T = Tc Using Scattering Theory Jihye Seo High, Harvard University Solving 2D Magnetic Ising Model at T = Tc Using Scattering Theory 1 / 28 #12;Intro Integrals of Motion and S Matrix Computation of Masses and S Matrix of Magnetic Critical Ising Model

87

[99mTcOAADT]-(CH2)2-NEt2: A Potential Small-Molecule Single-Photon Emission Computed Tomography Probe for Imaging Metastatic Melanoma  

Science Journals Connector (OSTI)

...in vivo behavior of Tc(V)oxo N2S2 complexes...419-25. 23 Petrescu SM, Petrescu A-J, Titu...States | 0 (technetium Tc 99m-O amine-amide-dithiol...Organotechnetium Compounds 0 Radiopharmaceuticals 7440-26-8 Technetium...use pharmacokinetics Radiopharmaceuticals diagnostic use pharmacokinetics...

Zhen Cheng; Ashfaq Mahmood; Huazhi Li; Alan Davison; and Alun G. Jones

2005-06-15T23:59:59.000Z

88

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

89

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

E-Print Network (OSTI)

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

De Cindio, Fiorella

90

A technique using {sup 99m}Tc-mebrofenin SPECT for radiotherapy treatment planning for liver cancers or metastases  

SciTech Connect

Radiotherapy or stereotactic body radiosurgery (SBRT) requires a sufficient functional liver volume to tolerate the treatment. The current study extended the work of de Graaf et al. (2010) [3] on the use of {sup 99m}Tc-mebrofenin imaging for presurgery planning to radiotherapy planning for liver cancer or metastases. Patient was immobilized and imaged in an identical position on a single-photon emission computed tomography/computed tomography (SPECT-CT) system and a radiotherapy simulation CT system. {sup 99m}Tc-mebrofenin SPECT was registered to the planning CT through image registration of noncontrast CT from SPECT-CT system to the radiotherapy planning CT. The voxels with higher uptake of {sup 99m}Tc-mebrofenin were transferred to the planning CT as an avoidance structure in optimizing a 2-arc RapidArc plan for SBRT delivery. Excellent dose coverage to the target and sparing of the healthy remnant liver volume was achieved. This report illustrated a procedure for the use of {sup 99m}Tc-mebrofenin SPECT for optimizing radiotherapy for liver cancers and metastases.

Shen, Sui, E-mail: sshen@uabmc.edu [Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, AL (United States); Jacob, Rojymon [Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, AL (United States); Bender, Luvenia W. [Nuclear Medicine Division, Department of Radiology, VA Medical Center, Birmingham, AL (United Kingdom); Duan, Jun; Spencer, Sharon A. [Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, AL (United States)

2014-04-01T23:59:59.000Z

91

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

SciTech Connect

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

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

2007-07-01T23:59:59.000Z

92

Vacancy effects in an easy-plane Heisenberg model: reduction of Tc and doubly-charged vortices  

E-Print Network (OSTI)

Vacancy effects in an easy-plane Heisenberg model: reduction of Tc and doubly-charged vortices G. M here under the presence of a low concentration of nonmagnetic impurities (spin vacancies). A nearest, a large fraction of the thermally generated vortices nucleate centered on vacancies, where they have

Wysin, Gary

93

Fretting Wear Study on Micro-Arc Oxidation TiO2 Coating on TC4 Titanium Alloys in Simulated Body Fluid  

Science Journals Connector (OSTI)

Tribological properties of TiO2 coatings synthesized by micro-arc oxidation (MAO) on the surface of TC4...2 coatings presented good tribological properties with lower friction coefficient in SBF. Less wear volume...

Guanghong Zhou; Hongyan Ding; Yue Zhang; Aihui Liu; Yuebin Lin…

2010-12-01T23:59:59.000Z

94

A Study of a High-Tc Superconducting Fault Current Limiter (No. 2): Development of an Element for 100-V Class Power Systems  

Science Journals Connector (OSTI)

The application of a high critical temperature (Tc) superconductor with a high critical current density (Jc) to a fault current limiter (FCL) was investigated to obtain a FCL which exhibits superior current limit...

Tatsuya Hayashi; Teijiro Mori; Yuuichi Wada…

1993-01-01T23:59:59.000Z

95

Ti-based composite coatings with gradient TiC x reinforcements on TC4 titanium alloy prepared by laser cladding  

Science Journals Connector (OSTI)

TiC x -NiTi2/Ti cermet composite coatings C1 and C2 with gradient TiC x ...reinforcements were prepared on TC4 titanium alloy by laser cladding ...

ShuNv Liu; ZongDe Liu; Yang Wang; Peng Yue

2014-07-01T23:59:59.000Z

96

Synthesis, radiolabeling and biodistribution studies of [99mTc(CO)3(MN-TZ-BPA)]+ in tumor-bearing mice  

Science Journals Connector (OSTI)

This study reports the synthesis, radiolabeling and preliminary biodistribution results of [99mTc(CO)3(MN-TZ-BPA)]+...in tumor-bearing mice. The novel nitroimidazole derivative was successfully synthesized by con...

Jianjun Wang; Yuan Tian; Xiaojiang Duan…

2012-04-01T23:59:59.000Z

97

Conclusions of the International RILEM TC 186-ISA Workshop on Internal Sulfate Attack and Delayed Ettringite Formation (4–6 September 2002, Villars, Switzerland)  

Science Journals Connector (OSTI)

A RILEM technical committee on Internal Sulfate Attack (TC 186-ISA) was established in 1996. In the ensuing years considerable research was carried out, which helped to clarify the scientific knowledge surroundin...

K. Scrivener; J. P. Skalny

2005-07-01T23:59:59.000Z

98

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

E-Print Network (OSTI)

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

Cemerski, Saso

99

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

SciTech Connect

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 (<2 ?M) and below the Fe(II)aq detection limit (10 ?M). Technetium(VII) reduction occurred in all anoxic sediments at depths greater than 18.3 m and reaction time differed significantly between the sediments (8-219 d). 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

100

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

SciTech Connect

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

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

2010-09-30T23:59:59.000Z

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.


101

Doping dependence of Fermi surface in high-Tc cuprates studied by model Hartree-Fock calculations  

Science Journals Connector (OSTI)

We have investigated doping dependence of Fermi surface, band dispersion, and magnetic structure in high-Tc cuprates by using Hartree-Fock calculation on a Cu 3d–O 2p tight-binding model. In the slightly electron-doped regime, electron pockets emerge around (?,0), which agrees with the photoemission study of Nd2-xCexCuO4. In the slightly hole-doped regime, hole pockets emerge around (?/2,?/2), which might explain the recent photoemission result of Ca2-xNaxCuO2Cl2.

D. Asakura and T. Mizokawa

2003-09-23T23:59:59.000Z

102

Preparation of high-Tc superconducting thick films and power conducting tubes by a low-pressure plasma spraying  

SciTech Connect

Superconducting thick films of YBaCuO and BiSrCaCuO systems have been prepared using a low-pressure plasma spraying technique. The chemical composition of the deposits was very close to that of the spraying powders. After the post-annealing, films showed zero resistance temperatures: Tc of -- 90K for YBaCuO and -- 60K for BiSrCaCuO, respectively. The superconducting power tubes were successfully produced by a low-pressure plasma spraying. 100 - 200..mu..m thick YBaCuO superconducting films were deposited on the outer surface of the Ni-plated Cu tubes. After the post- annealing at 930/sup 0/C for 1 hr, the films exhibited Tc of 85 - 90K. An improved film preparation process, where a flux layer is coated on the Y/sub 1/Ba/sub 2/Cu/sub 3/O/sub x/ matrix layer by a low-pressure plasma spraying, has been developed. Enhanced critical currents have been achieved through this process.

Tachikawa, K.; Ono, M.; Shinbo, Y.; Suzuk, T.; Kabasawa, M.; Kosuge, S.

1989-03-01T23:59:59.000Z

103

Development of more efficacious Tc-99m organ imaging agents for use in nuclear medicine by analytical characterization of radiopharmaceutical mixtures  

SciTech Connect

Capillary electrophoresis is being evaluated as a separation technique for analyzing Tc and Re diphosphonate radiopharmaceuticals. Advantages compared with currently used HPLC techniques include greater resolving power, smaller sample size and more rapid separations. Feasibility has been demonstrated with electropherograms obtained on a Re-HEDP sample. The Tc-PAA complexes in a radiopharmaceutical mixture were found to be unaffected by injection into a Sprague Dawley rat. This was determined by HPLC analysis of the rat's urine, which contained the same complexes as were in the injected sample. Proton NMR spectra have been obtained for samples of Tc-MDP and Re-MDP in order to provide structural information about these complexes. An in vivo sensor is being developed for a brain perfusion agent. Polymer coatings are being explored to extract the brain perfusion agent in order to enhance sensitivity for a microelectrode-based sensor. 4 refs., 2 figs.

Heineman, W.R.

1991-04-01T23:59:59.000Z

104

VOLUME 88, NUMBER 11 P H Y S I C A L R E V I E W L E T T E R S 18 MARCH 2002 High Tc Superconductivity in MgB2 by Nonadiabatic Pairing  

E-Print Network (OSTI)

,10]. Sec- ond, the experimental determination of the total isotope ef- fect on Tc reported a boron isotope interpretation of Tc 39 K and the boron isotope coefficient aB 0.30 without invoking very large couplings coefficient aB 0.30 and a negligible magnesium isotope effect [11]. Prelimi- nary indications suggest

Cappelluti, Emmanuele

105

Kinetics of back-extraction Tc (VII) by diformyl hydrazide from 30% TBP/dodecane solution using Lewis cell  

SciTech Connect

Research of kinetic laws of technetium (VII) back-extraction from 30% TBP/dodecane solution into nitric acid solution containing diformyl hydrazide (DFH) using a Lewis cell was performed. Impact of various parameters was studied at speed of technetium back-extraction (VII), such as speed of mixing, concentration of nitric acid, temperature, concentration of diformyl hydrazide and technetium. It was found that: first, the activation energy of Tc back-extraction process in the 10-50 C degrees temperature range is 29.36 kJ/mole. Secondly, the speed of back-extraction practically does not depend on concentration of DFH and HNO{sub 3} in the ranges from 0.001 to 0.3 mol/l and from 0.2 to 2 mol/l accordingly.

Vidanov, V.L.; Dvoeglazov, K.N.; Volk, V.I. [OJSC, High-technology Science and Research Institute of Inorganic Materials, Moscow (Russian Federation)

2013-07-01T23:59:59.000Z

106

Thermal Hall conductivity of marginal Fermi liquids subject to out-of-plane impurities in high-Tc cuprates  

Science Journals Connector (OSTI)

The effect of out-of-plane impurities on the thermal Hall conductivity ?xy of in-plane marginal-Fermi-liquid (MFL) quasiparticles in high-Tc cuprates is examined by following the work on electrical Hall conductivity ?xy by Varma and Abraham [Phys. Rev. Lett. 86, 4652 (2001)]. It is shown that the effective Lorentz force exerted by these impurities is a weak function of energies of the MFL quasiparticles, resulting in nearly the same temperature dependence of ?xy/T and ?xy, indicative of obedience of the Wiedemann-Franz law. The inconsistency of the theoretical result with the experimental one is speculated to be the consequence of the different amounts of out-of-plane impurities in the two YBaCuO samples used for the ?xy and ?xy measurements.

Mei-Rong Li

2002-04-30T23:59:59.000Z

107

Numerical simulations of thermomagnetic instability in high-Tc superconductors: Dependence on sweep rate and ambient temperature  

Science Journals Connector (OSTI)

We report the results of numerical simulations of flux jumps on the basis of dynamic process of thermomagnetic interaction to the nonisothermal and nonadiabatic high-Tc superconductors in the regime of thermally activated flux creep when an applied magnetic field is parallel to a slab of the high-Tc superconductors. The simulations for the samples of BiSrCaCuO show that the flux jumps may occur only in the region of low ambient temperature, which is dependent upon the heat contact, and the sweep rate is greater than a lower critical value of about 20G?s and lesser than a large one up to the order of 1–10T?s. It is found that the predictions of the first flux-jump field Bfj1 are quantitatively in good agreement with the existing experimental data, and the temperature jumps are observed in the superconductors, corresponding to each flux jump in the magnetization loop. When the field sweep rate exceeds the large critical value for the case of the superconductor at 4.2K, the phenomenon of experimental observations without flux jump is successfully predicted by the theoretical simulation, where the thermomagnetic interaction is smoothly circulated at a new dynamic equilibrium state in the temperature region of about 10.6–16.4K higher than the ambient one, which is mainly dependent on the tradeoff of speeds of the dissipation energy in the slab and the heat removed into the coolant. After that, the sensitivity of the thermomagnetic instability to the parameters, such as critical current density, heat conductivity, heat transfer coefficient, critical geometrical scale, etc. is also discussed.

You-He Zhou and Xiaobin Yang

2006-08-15T23:59:59.000Z

108

Dependence of Tc on hydrostatic pressure in superconducting MgB2 T. Tomita, J. J. Hamlin, and J. S. Schilling  

E-Print Network (OSTI)

, within experimental error, with the He-gas study.12 A further DAC study16 to 7 GPa with silicon oil. Schilling Department of Physics, Washington University, C. B. 1105, One Brookings Dr., St. Louis, Missouri The dependence of Tc on hydrostatic He-gas pressure for superconducting MgB2 has been determined to 0.7 GPa. We

Schilling, James

109

> 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.

110

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

111

Development of more efficacious Tc-99m organ imaging agents for use in nuclear medicine by analytical characterization of radiopharmaceutical mixtures: Progress report for period September 1, 1986-August 31, 1987  

SciTech Connect

The long-range objective of this research is the development of more efficacious technetium-99m radiopharmaceuticals for use as imaging agents in diagnostic nuclear medicine. The author developed analytical techniques that are capable of separating radiopharmaceutical mixtures into their component technetium complexes for subsequent evaluation. During this one-year period, a chromatographic procedure has been developed for the separation of technetium phosphonoacetic acid (PAA) complexes and five Tc-PAA complexes have been isolated from radiopharmaceutical preparations. The concentration of each complex in the preparation varies significantly depending on the pH of the preparation. Radiopharmaceutical preparations based on the ligand methylene diphosphonate (MDP) have been prepared by electrochemical reduction of TcO/sub 4//sup -/. The yields of different Tc-MDP complexes are affected by the potential applied to the electrochemical cell. The control of both potential and pH enables a specific Tc-MDP complex to be produced in purer form and higher yield than by chemical reduction. An EXAFS spectrum of a solution of chromatographically isolated Tc-HEDP (hydroxyethylidine diphosphonate) complex shows evidence for a Tc-Tc bond, which is supportive of the postulated oligomeric/polymeric nature of these complexes. 9 refs., 4 figs.

Heineman, W.R.

1987-06-01T23:59:59.000Z

112

Implications of CT noise and artifacts for quantitative {sup 99m}Tc SPECT/CT imaging  

SciTech Connect

Purpose: This paper evaluates the effects of computed tomography (CT) image noise and artifacts on quantitative single-photon emission computed-tomography (SPECT) imaging, with the aim of establishing an appropriate range of CT acquisition parameters for low-dose protocols with respect to accurate SPECT attenuation correction (AC). Methods: SPECT images of two geometric and one anthropomorphic phantom were reconstructed iteratively using CT scans acquired at a range of dose levels (CTDI{sub vol} = 0.4 to 46 mGy). Resultant SPECT image quality was evaluated by comparing mean signal, background noise, and artifacts to SPECT images reconstructed using the highest dose CT for AC. Noise injection was performed on linear-attenuation (?) maps to determine the CT noise threshold for accurate AC. Results: High levels of CT noise (? ? 200–400 HU) resulted in low ?-maps noise (? ? 1%–3%). Noise levels greater than ?10% in 140 keV ?-maps were required to produce visibly perceptible increases of ?15% in {sup 99m}Tc SPECT images. These noise levels would be achieved at low CT dose levels (CTDI{sub vol} = 4 ?Gy) that are over 2 orders of magnitude lower than the minimum dose for diagnostic CT scanners. CT noise could also lower (bias) the expected ? values. The relative error in reconstructed SPECT signal trended linearly with the relative shift in ?. SPECT signal was, on average, underestimated in regions corresponding with beam-hardening artifacts in CT images. Any process that has the potential to change the CT number of a region by ?100 HU (e.g., misregistration between CT images and SPECT images due to motion, the presence of contrast in CT images) could introduce errors in ?{sub 140} {sub keV} on the order of 10%, that in turn, could introduce errors on the order of ?10% into the reconstructed {sup 99m}Tc SPECT image. Conclusions: The impact of CT noise on SPECT noise was demonstrated to be negligible for clinically achievable CT parameters. Because CT dose levels that affect SPECT quantification is low (CTDI{sub vol} ? 4 ?Gy), the low dose limit for the CT exam as part of SPECT/CT will be guided by CT image quality requirements for anatomical localization and artifact reduction. A CT technique with higher kVp in combination with lower mAs is recommended when low-dose CT images are used for AC to minimize beam-hardening artifacts.

Hulme, K. W.; Kappadath, S. C., E-mail: skappadath@mdanderson.org [Department of Imaging Physics, The University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030 and The University of Texas Graduate School of Biomedical Sciences, Houston, Texas 77030 (United States)

2014-04-15T23:59:59.000Z

113

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

114

Comparison of gated Tc99m-MIBI SPECT with Tc99m-MIBI/F18-FDG SPECT imaging in the diagnosis of resting ischemia, scarring, and viability  

SciTech Connect

Advances in the diagnosis of myocardial ischemia/viability at rest include gated Tc99m-MIBI SPECT imaging, and F18-FDG SPECT imaging. We wished to compare gated MIBI with nongated MIBI/FDG SPECT imaging in 20 patients(pts) with CAD and LV dysfunction. MIBI and FDG uptake and wall motion (WM) at rest were graded in 16 LV segments (Segs). In Segs with at least some MIBI defects, the role of WM information was assessed for the prediction of ischemia (MIBI/FDG mismatch), scarring (MIBI/FDG match), and viability (moderate-normal FDG uptake). All pts had evidence of scarring in some Segs. 11/20 showed significant ischemia. In 10/20 pts, WM generally matched MIBI uptake, of which 6 had ischemia; Of the other 10/20, WM was worse in 3 pts and better in 7 pts. Of the latter, 4/7 had only minimal ischemia, and 3/7 had significant ischemia. Out of 320 combined Segs, 226 had MIBI defects. 80/226 Segs (35%) had ischemia. If WM was better than MIBI uptake, % ischemia only rose to 29/77 Segs (38%)(p-ns). Of 112 Segs with severe MIBI defects, 33% showed ischemia, 67% scarring, and 24% viability. Segs with WM better than severe MIBI defects showed ischemia in 34% (14/41) Segs and viability in 29%(12/41) Segs(p=ns). Segs with both severe MIBI uptake and WM defects showed scarring in 69%(55/80) Segs (p=ns). We conclude that WM information did no appreciably enhance the prediction of resting ischemia, scarring, or viability from resting MIBI uptake alone compared to MIBI/FDG SPECT imaging.

Machac, J.; Dangas, G.; Henzlova, M.J. [Mount Sinai Medical Center, NY (United States)] [and others

1996-05-01T23:59:59.000Z

115

Characterization of natural titanomagnetites (Fe3-xTixO4) for studying heterogeneous electron transfer to Tc(VII) in the Hanford subsurface  

SciTech Connect

Sediments with basaltic provenance, such as those at the Hanford nuclear reservation, Washington, USA, are rich in Fe-bearing minerals of mixed valence. These minerals are redox reactive with aqueous O2 or Fe(II), and have the potential to react with important environmental contaminants including Tc. Here we isolate, identify and characterize natural Fe(II)/Fe(III)-bearing microparticles from Hanford sediments, develop synthetic analogues and investigate their batch redox reactivity with aqueous Tc(VII). Natural Fe-rich mineral samples were isolated by magnetic separation from sediments collected at several locations on Hanford’s central plateau. This magnetic mineral fraction was found to represent up to 1 wt% of the total sediment, and be composed of 90% magnetite with minor ilmenite and hematite, as determined by X-ray diffraction. The magnetite contained variable amounts of transition metalsconsistent with alio- and isovalent metal substitutions for Fe. X-ray microprobe analysis showed that Ti was the most significant substituent, and that these grains could be described with the titanomagnetite formula Fe3_xTixO4, which falls between endmember magnetite (x = 0) and ulvo¨ spinel (x = 1). The dominant composition was determined to be x = 0.15 by chemical analysis and electron probe microanalysis in the bulk, and by L-edge X-ray absorption spectroscopy and X-ray photoelectron spectroscopy at the surface. Site-level characterization of the titanomagnetites by X-ray magnetic circular dichroism showed that despite native oxidation, octahedral Fe(II) was detectable within 5 nm of the mineral surface. By testing the effect of contact with oxic Hanford and Ringold groundwaters to reduced Ringold groundwater, it was found that the concentration of this near-surface structural Fe(II) was strongly dependent on aqueous redox condition. This highlights the potential for restoring reducing equivalents and thus reduction capacity to oxidized Fe-mineral surfaces through redox cycling in the natural environment. Reaction of these magnetically-separated natural phases from Hanford sediments with a solution containing 10 lmol L_1 Tc(VII) showed that they were able to reductively immobilize Tc(VII) with concurrent oxidation of Fe(II) to Fe(III) at the mineral surface, as were synthetic x = 0.15 microparticle and nanoparticle analogue phases. When differences in the particle surface area to solution volume ratio were taken into consideration, measured Tc(VII) reduction rates for Fe3_xTixO4(x = 0.15) natural material, synthetic bulk powder and nanoparticles scaled systematically, suggesting possible utility for comprehensive batch and flow reactivity studies.

Pearce, Carolyn I.; Liu, Juan; Baer, Donald R.; Qafoku, Odeta; Heald, Steve M.; Arenholz, Elke; Grosz, Andrew E.; McKinley, James P.; Resch, Charles T.; Bowden, Mark E.; Engelhard, Mark H.; Rosso, Kevin M.

2014-03-01T23:59:59.000Z

116

Reductive atmosphere of supercritical water with RuO2 resulting in TcO2 colloid: Spectroscopic, morphological and crystallographic study on solutions and precipitates in Hastelloy C-22  

Science Journals Connector (OSTI)

In order to study the complicated behavior of technetium observed under various conditions of supercritical water (SCW), i.e. quantitative transfer to solid phase, strong adsorption onto the metal surface, or efficient dissolution from the metal surface, solutions and precipitates prepared in reactors made of Hastelloy C-22 in contact with the SCW containing technetium solutions were studied by absorption spectroscopy, TEM, EDX and electron diffraction. Under SCW with or without H2O2, NiCr2O4 and NiMoO4 was produced as the scales (corrosion products) of Hastelloy C-22. Under SCW with RuO2 the formation of colloidal structure comprised of ruthenium metal and TcO2, which may be named as “Tc-Ru-Colloid”, were observed. It is worthy of note that the formation of TcO42? from pertechnatate TcO4? (+0.596 V) and the disproportionation of TcO42? is plausible at present in spite of the moderate reductive atmosphere (?0.533 to +0.114 V) estimated from the observation (the existence of TcO2 and the absence of NiMoO4) by TEM and electron diffraction.

T. Yamamura; K. Yubuta; I. Satoh; Y. Yoshida; Y. Shiokawa; T. Sekine; W. Sugiyama; K.-C. Park; H. Tomiyasu

2007-01-01T23:59:59.000Z

117

Robot learning [TC Spotlight  

E-Print Network (OSTI)

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

Tedrake, Russell Louis

118

High-Tc Superconductor  

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

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

119

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

120

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

SciTech Connect

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

Note: This page contains sample records for the topic "tc tc tc" from the National Library of EnergyBeta (NLEBeta).
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121

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

SciTech Connect

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

122

d3z2?r2 orbital in high-Tc cuprates: Excitonic spectrum, metal-insulator phase diagram, optical conductivity, and orbital character of doped holes  

Science Journals Connector (OSTI)

The single-site dynamical mean-field approximation is used to solve a model of high-Tc cuprate superconductors, which includes both dx2?y2 and d3z2?r2 orbitals on the Cu as well as the relevant oxygen states. Both T (with apical oxygen) and T? (without apical oxygen) crystal structures are considered. In both phases, inclusion of the d3z2?r2 orbital is found to broaden the range of stability of the charge-transfer insulating phase. For equal charge-transfer energies and interaction strengths, the T? phase is found to be less strongly correlated than the T phase. For both structures, d-d excitons are found within the charge-transfer gap. However, for all physically relevant dopings, the Fermi surface is found to have only one sheet and the admixture of d3z2?r2 into the ground-state wave function remains negligible (<5%). Inclusion of the extra orbitals is found not to resolve the discrepancy between computed and observed conductivity in the insulating state.

Xin Wang; Hung The Dang; Andrew J. Millis

2011-07-29T23:59:59.000Z

123

Radiochemical Investigations of Gastrin-releasing Peptide Receptor-specific [99mTc(X)(CO)3-Dpr-Ser-Ser-Ser-Gln-Trp-Ala-Val-Gly-His-Leu-Met-(NH2)] in PC-3, Tumor-bearing, Rodent Models: Syntheses, Radiolabeling, and in Vitro/in Vivo Studies where Dpr = 2,3-Diaminopropionic acid and X = H2O or P(CH2OH)3  

Science Journals Connector (OSTI)

...availability (99Mo/99mTc generator system), ideal nuclear...of borohydride under atmospheric carbon monoxide pressure...lability of the three water molecules coordinated...from a 99Mo/99mTc generator provided by Mallinckrodt...were performed on a Waters 600E system equipped...

C. Jeffrey Smith; Gary L. Sieckman; Nellie K. Owen; Donald L. Hayes; Dana G. Mazuru; Raghuraman Kannan; Wynn A. Volkert; and Timothy J. Hoffman

2003-07-15T23:59:59.000Z

124

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...

125

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  

SciTech Connect

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

126

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

127

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

SciTech Connect

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

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

1998-04-01T23:59:59.000Z

128

Time-resolved distributions of bulk parameters, diacids, ketoacids and ?-dicarbonyls and stable carbon and nitrogen isotope ratios of TC and TN in tropical Indian aerosols: Influence of land/sea breeze and secondary processes  

Science Journals Connector (OSTI)

Abstract To better understand the photochemical production and diurnal distributions of organic and inorganic aerosols in the tropical coastal Indian atmosphere, the aerosol (TSP) samples were collected every 3 h during 30–31 January, 14–15 February and 28–29 May 2007 from Chennai and studied for total carbon (TC) and nitrogen (TN) and their stable isotope ratios (?13CTC and ?15NTN), carbonaceous components, inorganic ions, diacids, ketoacids and ?-dicarbonyls. Time-resolved distributions of bulk parameters, inorganic ions, and diacids and related compounds, except for few species, did not show any clear diurnal trend but showed peaks at 6–9 h during all the study periods, except for the peak at 15–18 h on 28 May. SO42?, C2 ? C6 diacids, ketoacids and ?-dicarbonyls in February and on 29 May showed a diurnal trend. ?13CTC and ?15NTN stayed relatively constant during the study periods but showed 13C depletion (in January) and 15 N enrichment when TC and TN peaked. Based on these results together with air mass trajectories, we found that the diurnal distributions of Chennai aerosols are mainly influenced by land/sea breeze and the aged (photochemically processed) air masses, although in situ photochemical production and nighttime chemistry of secondary aerosol species, particularly C2–C4 diacids and SO42?, are significant. The characteristics of seasonal variations of carbonaceous components, and diacids and related compounds and comparisons of ?13CTC and ?15NTN of Chennai aerosols with the isotopic signatures of the point sources inferred that biofuel/biomass burning in South and Southeast Asia are the major sources of aerosols (TSP).

Chandra Mouli Pavuluri; Kimitaka Kawamura; T. Swaminathan

2015-01-01T23:59:59.000Z

129

Surgical, pathological and clinical correlation of Tc-99m DISIDA hepatobiliary imaging in 138 adult males, in the diagnosis of functional cystic duct obstruction VS acute or chronic cholecystitis  

SciTech Connect

Despite the wide acceptance of the hepatobiliary scintigraphy as a popular diagnostic imaging modality for gallbladder and hepatobiliary disease, correlation between radionuclide diagnoses and the final clinical and/or pathologic findings have not been thoroughly evaluated. The lack of correlative studies frequently generates difficulties in making appropriate diagnostic interpretation of the objective findings. A retrospective clinical pathological and surgical correlative study was undertaken by the authors in 138 male veteran patients, who underwent computer assisted minute by minute Tc-99m DISIDA cholescintigraphy. A very high percentage (75%) revealed abnormalities; non-visualization of gallbladder (GB) with normal choledochus system (46%), choledochal obstruction with no GB visualization (13%), choledochal obstruction with normal GB visualization (6%), severe hepatocellular disease with non-diagnostic GB (4%), and delayed GB visualization (longer than 60 minutes) (3%). Non-visualization of GB but normal choledochus demonstrated diverse pathologic etiologies, acute and chronic cholecystitis (64%), S/P cholecystectomy (8%), functional obstruction secondary to sepsis or pancreatitis (6%), and various other pathologies including porcelain GB and cholangitis (22%). The most important cause of choledochal obstruction was mass lesions or local infiltration with metastases (33%) rather than acute cholecystitis (27%). Although the sensitivity (98%) and specificity (92%) for cystic duct obstruction were very high, the specificity decreases significantly for cholecystitis.

Yoo, J.H.K.; Beal, W.H.; Ware, R.W.; Straw, J.D.; Chaudhuri, T.K.

1985-05-01T23:59:59.000Z

130

Microsoft Word - TC Transition Final.doc  

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

auxiliary equipment needs, and conversion losses from converting electrical power to heat. Ultimately, the end state for this development would be use of up to 50 MW of...

131

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

132

TC5 Report, September 2005 Traditional and Innovative  

E-Print Network (OSTI)

of Technology, Germany Horace MOO-YONG (§ 3.2.4) Lehigh University, USA Tom ZIMMIE (§ 3.2.4) Rensselaer & Bonaparte, 1989a;b; Giroud et al., 1992; Daniel, 1993); (2) better biogas control; (3) minimization

Zornberg, Jorge G.

133

Tc with AsqTad and p4rhmc  

SciTech Connect

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

Soltz, R; Vranas, P; Gupta, R

2007-06-20T23:59:59.000Z

134

TC1 Parts List Quantity Size Description **Possible Vendor  

E-Print Network (OSTI)

for spring coils 1 800+ ohms coil 2000-4000 wraps of 38ga or 40ga copper magnet wire. (I target 970 to 1200.5" Slinky Jr. metal spring, cut in half. Toys R Us 3 ¼" id x3/4"od x 1/4"thick RC44 Neodymium ring magnets Kohms, using 2500 wraps of 40ga). All Spectrum Electronics 1 1"id x 1.75"long pvc Coil body. Use the 200

Barrash, Warren

135

Muon Spin Relaxation Studies on High-Tc Superconductors  

Science Journals Connector (OSTI)

The AGS proton synchrotron at Brookhaven National Laboratory facilitates a medium-intensity polarized muon channel. Muon spin relaxation (?SR) experiments on single...1.85Sr0.15)CuO4 and YBa2Cu3O7...have been car...

W. J. Kossler; J. R. Kempton; A. Moodenbaugh; D. Opie; H. Schone…

1987-01-01T23:59:59.000Z

136

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

E-Print Network (OSTI)

of more than 1000 ground water samples, and over 30 different measurements of more than 3000 soil gas was designed to demonstrate in situ bioremediation of ground water and sediment contaminated with chlorinated sound remediation technologies available at sites where it will work. The Savannah River Site has just

Hazen, Terry

137

Pretreatment/Radionuclide Separations of Cs/Tc from Supernates  

SciTech Connect

Significant improvements have been made in ion exchange and solvent extraction materials and processes available for separation of the radionuclides cesium and technetium from both acid and alkaline waste solutions. New ion exchange materials and solvent extraction reagents are more selective for Cs over sodium and potassium than previous materials. The higher selectivity gives higher Cs capacity and improved separation processes. Technetium removal has been improved by new ion exchange resins, which have either improved capacity or easier elution. Several different crown ethers have been shown to extract pertechnetate ion selectively over other anions. Organic complexants in some waste solutions reduce pertechnetate ion and stabilize the reduced species. Selective oxidation allows conversion to pertechnetate without oxidation of the organic complexants.

Thompson, M.C. [Westinghouse Savannah River Company, AIKEN, SC (United States)

1998-09-01T23:59:59.000Z

138

TC an intermediate language for programming chip multiprocessors  

E-Print Network (OSTI)

in the MicroGrid project at the University of Amsterdam, which is designing chip multiprocessors based

Jesshope, Chris

139

Z. Phys. B 101, 561--564 (1996) Global ac susceptibility of low pinning high-Tc crystals near Tc  

E-Print Network (OSTI)

Supercon. a. Magn., Universita¨ t Leipzig, Linne´ strasse 5, D-04103 Leipzig, Germany Department of Physics and The Science and Technology Center for Superconductivity, Northern Illinois University, De Kalb measurements of the local permeabil- ity in clean Bi Sr CaCu O crystals near the critical tem- perature

Zeldov, Eli

140

Optimization of operating parameters for the Texas A&M Variable Energy Cyclotron  

E-Print Network (OSTI)

'S Empirical C on st r aint: Fr Fr e quency De e Vo 1 tag e (Kilo v o lt s ) Main Coil (Amps) TCO'l: TC02: TC03: TC04: TC05: TC06: TC07: TC08: TC09: TC10: TC11: TC12: TC13: TC14: TC15: TC16: TC17: ee Voltage equency; D 7. 04200 34 478...'S Empirical C on st r aint: Fr Fr e quency De e Vo 1 tag e (Kilo v o lt s ) Main Coil (Amps) TCO'l: TC02: TC03: TC04: TC05: TC06: TC07: TC08: TC09: TC10: TC11: TC12: TC13: TC14: TC15: TC16: TC17: ee Voltage equency; D 7. 04200 34 478...

Wolters, Richard Arthur

2012-06-07T23:59:59.000Z

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

Metal?Metal Multiply-Bonded Complexes of Technetium. 4.1 Photodissociation of the Tc?Tc Triple Bond in [Tc2(CH3CN)10][BF4]4  

Science Journals Connector (OSTI)

Laboratory for Molecular Structure and Bonding Department of Chemistry, Texas A&M University College Station, Texas 77843 Inorganic and Structural Chemistry Group (CST-3) Chemical Science and Technology Division Los Alamos National Laboratory Los Alamos, New Mexico 87545 ... The lowest energy transition appears at 330 nm and tails slightly into the visible region, giving concentrated solutions of 2 a faint yellow color. ... Attempts to thermally labilize one of the coordinated nitrile ligands in an effort to reform the metal?metal bond in the solid state resulted in decomposition of the complex. ...

F. Albert Cotton; Steven C. Haefner; Alfred P. Sattelberger

1996-06-12T23:59:59.000Z

142

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 .................................................................................................................

143

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

144

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

145

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.

146

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

147

Imaging the Effects of Individual Impurity Atoms in High-Tc Superconductors  

E-Print Network (OSTI)

created at W1 and W2 · On-site component of both impurity-states is four-fold symmetric, pointing at gap-state is four-fold symmetric · Oriented with gap nodes. Balatsky, A.V., Salkola M.I., & Rosengren, A., Phys. Rev intra-gap impurity-state · Magnetic interactions lift the spin-degeneracy · Two spin-polarized states

Davis, James C.

148

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

Energy Savers (EERE)

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

149

Anomalous Fermi-Surface Dependent Pairing in a Self-Doped High-Tc Superconductor  

SciTech Connect

We report the discovery of a self-doped multi-layer high T{sub c} superconductor Ba{sub 2}Ca{sub 3}Cu{sub 4}O{sub 8}F{sub 2} (F0234) which contains distinctly different superconducting gap magnitudes along its two Fermi surface(FS) sheets. While formal valence counting would imply this material to be an undoped insulator, it is a self-doped superconductor with a T{sub c} of 60K, possessing simultaneously both electron- and hole-doped FS sheets. Intriguingly, the FS sheet characterized by the much larger gap is the electron-doped one, which has a shape disfavoring two electronic features considered to be important for the pairing mechanism: the van Hove singularity and the antiferromagnetic ({pi}/a, {pi}/a) scattering.

Chen, Y.

2010-05-03T23:59:59.000Z

150

Processing and fabrication of high-{Tc} superconductors for electric power applications  

SciTech Connect

Recent developments in the powder-in-tube fabrication of (Bi,Pb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub x} tapes include identification of high current transport regions of the superconductor core, optimization of conductor design and processing to take advantage of these high current regions, optimization of superconductor powders and heat treatments, and incorporation of flux pinning defects into the superconductor grains. These developments are briefly discussed and their implications are assessed.

Balachandran, U.; Iyer, A.N.; Goretta, K.C. [Argonne National Lab., IL (United States). Energy Technology Div.; Haldar, P. [Intermagnetics General Corp., Latham, NY (United States)

1997-09-01T23:59:59.000Z

151

IMEKO TC 18 Symposium Measurement, Analysis and Modelling of Human Functions  

E-Print Network (OSTI)

, a reduced order model is derived; whose inputs are wheel orientations, lateral force and yaw moment. Because of the sinusoidal regression after the frequency analysis. The yaw moment that cannot be measured in our motion measurement system is identified based on computer simulations; whose result is made to be matched

Ito, Satoshi

152

Microsoft Word - EXT-12-24761 AGR-1 TC Data Analysis - FINAL...  

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

the Advanced Test Reactor (ATR) at INL to obtain data on fuel behavior under normal and accident conditions of a new generation of very high-temperature gas-cooled 2 reactors...

153

Quantum Criticality Stabilizes High T_c Superconductivity Against Competing Symmetry-Breaking Instabilities  

E-Print Network (OSTI)

The occurrence of high-T_c superconductivity in systems including the cuprates and the iron-based superconductors, is known to coincide with the existence of anomalous normal-state properties which have been associated with quantum criticality. We argue here that this observation results from the fact that quantum criticality can allow the occurrence of very-strong-coupling superconductivity by preventing its suppression due to competing symmetry-breaking instabilities. Treating the electrons through a large-U ansatz yields their separation into boson quasiparticles which are directly involved in the formation of these instabilities, represented as their Bose condensates, and charge-carrying fermion quasiparticles which are affected by them indirectly. Within the critical regime, condensates corresponding to the different broken-symmetry states are combined; consequently their negative effect on the pairing of the fermions is strongly diminished, enabling high-T_c superconductivity to occur. The observed phase diagram of the hole-doped cuprates then derives from a hidden T=0 quantum phase transition between a Fermi-liquid and a non-Fermi-liquid broken-symmetry striped state. The pseudogap range within this diagram is found to include two distinct regimes, with partial pairing occurring in one of them.

Josef Ashkenazi; Neil F. Johnson

2012-07-29T23:59:59.000Z

154

Interrelation between the Pseudogap and the Incoherent Quasiparticle Features of High- Tc Superconductors  

Science Journals Connector (OSTI)

Using a scenario of a hybridized mixture of localized bipolarons and conduction electrons we demonstrate for the latter the simultaneous appearance of a pseudogap and of strong incoherent contributions to their quasiparticle spectrum which arise from phonon shakeoff effects. This can be traced back to temporarily fluctuating local lattice deformations, giving rise to a double-peak structure in the pair distribution function, which should be a key feature in testing the origin of these incoherent contributions, recently seen in angle resolved photoemission spectroscopy.

J. Ranninger and A. Romano

1998-06-22T23:59:59.000Z

155

Arthrobacter aurescens TC1 Metabolizes Diverse s-Triazine Ring Compounds  

Science Journals Connector (OSTI)

...source of carbon, nitrogen, and energy. (A) Culture grown with 500...sales and usage 1996 and 1997 market estimates. Document 733-R-99-001...source of nitrogen, carbon, and energy, consuming up to 3,000 mg...Minnesota, St. Paul 55108, USA. | Journal Article Research...

Lisa C. Strong; Charlotte Rosendahl; Gilbert Johnson; Michael J. Sadowsky; Lawrence P. Wackett

2002-12-01T23:59:59.000Z

156

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

Energy Savers (EERE)

with ENERGY STAR for Homes Version 3 for an energy-effi cient home built on a solid foundation of building science research. Advanced technologies are designed in to give you...

157

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

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

1,055-ft2 two-story production home has 6-in. SIP walls, a 10-in. SIP roof, and ICF foundation walls with R-20 high-density rigid EPS foam under the slab. A single ductless heat...

158

Half Life of {sup 101}Mo and {sup 101}Tc beta{sup -}-decay  

SciTech Connect

In this work, the half-life of the {sup 155}Sm beta{sup -} decay was determined using enriched {sup 154}Sm samples submitted to irradiation in the IEA-R1 reactor of IPEN; the activity of the samples were followed for 4-5 consecutive half lives using a 198 cm{sup 3} HPGe detector. The data was corrected using a non paralizable dead time correction and fitted to an exponential decay function using a non linear fitting procedure developed on the MatLab platform. The resulting value--T{sub 1/2} = 22.180(26) min--was compatible to the one found in the literature, with a lower uncertainty.

Genezini, Frederico A.; Zahn, Guilherme S.; Zamboni, Cibele B. [Centro do Reator de Pesquisas (CRPq)-Instituto de Pesquisas Energeticas e Nucleares (IPEN-CNEN/SP). Av. Linneu Prestes, 2242-Cidade Universitaria, Sao Paulo, SP, 05507-000 (Brazil)

2010-05-21T23:59:59.000Z

159

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

E-Print Network (OSTI)

-jar vacuum chamber. The bell-jar vacuum chamber was evacuated by use of the standard set-up of a roughing pump and difFusion pump connected to the chamber (see Fig. 2. 1) via a cold trap. Feed through lines for air, electrical current, quartz crystal... and thallium dif- fusion as opposed to a system where thallium was a part of the deposition. The process also was simpler than attempting to get the correct ratio of thallium with respect to the other elements during deposition of the precursor...

Williams, John Charles

2012-06-07T23:59:59.000Z

160

Full oxide heterostructure combining a high-TC diluted ferromagnet with a high-mobility conductor  

Science Journals Connector (OSTI)

We report on the growth of heterostructures composed of layers of the high-Curie temperature ferromagnet Co-doped (La,Sr)TiO3 (Co-LSTO) with high-mobility SrTiO3 (STO) substrates processed at low oxygen pressure. While perpendicular spin-dependent transport measurements in STO//Co-LSTO/LAO/Co tunnel junctions demonstrate the existence of a large spin polarization in Co-LSTO, planar magnetotransport experiments on STO//Co-LSTO samples evidence electronic mobilities as high as ?104cm2?Vs at T=10K. At high enough applied fields and low enough temperatures (?H?6T, T?4K) Shubnikov–de Haas oscillations are also observed. We present an extensive analysis of these quantum oscillations and relate them with the electronic properties of STO, for which we find large scattering rates up to ?10?11s. Thus this work opens up the possibility to inject a spin-polarized current from a high-Curie temperature diluted oxide into an isostructural system with high mobility and a large spin diffusion length.

G. Herranz, M. Basletic, M. Bibes, R. Ranchal, A. Hamzic, E. Tafra, K. Bouzehouane, E. Jacquet, J. P. Contour, A. Barthélémy, and A. Fert

2006-02-01T23:59:59.000Z

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.


161

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

SciTech Connect

'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

162

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

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

Case study of a DOE Zero Energy Ready Home in Seattle, WA, that scored HERS 37 without PV, HERS -1 with PV. This 1,915 ft2 custom home has SIP walls and roof, R-20 XPS under the slab, triple-pane windows, an air to water heat pump for radiant heat, and balanced ventilation with timer –controlled fans to bring in and exhaust air.

163

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

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

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

164

High-Risk Components Removed from K-25’s Tc-99 Area  

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

Oak Ridge's EM program removes one of the highest risk components remaining in K-25 building with the successful crane removal of five components known as NaF traps.

165

Application of Hi-Tc superconducting current fault limiters to utility distribution networks  

SciTech Connect

A new classification of superconducting current fault limiter (SCFL) is described which is a non-quenching, variable-inductance-mode VIM current limiter with characteristics matched to utility distribution line parameters. A major application of this device is for replacement of fixed-inductance air-core reactors used in impedance and short-circuit levels from sub-transmission to distribution. The secondary application of the SCFL is for protection of distribution substation transformers in the 5--40 MVA range, as a replacement for current limiting fuses and air-blast circuit breakers. The SCFL devices have the unique characteristic of producing minimal or no transient recovery voltage (TRV) as is typical of conventional interruption technologies.

Kuznetsov, S.B.; Webb, T.J. [Power Superconducting Devices Inc., Pittsburgh, PA (United States)

1996-10-01T23:59:59.000Z

166

Power System Feedback from High-Tc Superconductor Shielded Core Fault Current Limiter  

Science Journals Connector (OSTI)

The shielded core fault current limiter is attractive with high critical temperature superconductors. ... acts during normal operation as an ideally shorted current transformer; the secondary superconducting loop...

J. Gerhold

1998-01-01T23:59:59.000Z

167

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

168

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

E-Print Network (OSTI)

state of Cu-O high-temperature superconductors. Phys. Rev.coupling in high- temperature superconductors. Nature 412,Pseudogap in the High-Temperature Superconductor HoBa 2 Cu 4

Garcia, Daniel Robert

2010-01-01T23:59:59.000Z

169

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

170

Magneto-optical studies of magnetization processes in high-Tc superconductors structure.  

SciTech Connect

Magneto-optical imaging is a powerful tool for nondestructive quality control and scientific research through visualization of magnetic fields around any magnetic flux or current carrying sample. It allows real time observations of domain structures and their transformations in magnetics, static and dynamic field patterns due to inhomogeneous currents in electric circuits and superconductors, and reveals distortions of the fields due to defects. In addition to qualitative pictures showing different details in the intensities of the magneto-optical images, one can obtain quantitative maps of field distributions and retrieve values of the underlying currents or magnetization variations. In this review we discuss the advantages of magneto-optics for studies of superconductors, show its place among other techniques, and report recent results in magneto-optical investigations of high temperature superconductors (HTS).

Vlasko-Vlasox, V. K.

1998-12-02T23:59:59.000Z

171

TC corrections to the single-top-quark production at the Fermilab Tevatron  

E-Print Network (OSTI)

We calculate one-loop corrections to the single-top-quark production via $q\\overline{q}' \\to t\\overline b$ at the Fermilab Tevatron from the Pseudo-Goldstone bosons ( PGBs ) in the framework of one generation technicolor model. The maximum correction to the total cross section for the single-top-quark production is found to reach -2.4% relative to the tree-level cross section, which may be observable at a high-luminosity Tevatron.

Gongru Lu; Yigang Cao; Jinshu Huang; Junde Zhang; Zhenjun Xiao

1997-01-29T23:59:59.000Z

172

Synthesis of a 99mTc Flutamide System for Imaging Androgen Expression in  

E-Print Network (OSTI)

Synthesis Compound 1 was prepared by dissolving methyl 2- ((pyridin-2-ylmethyl)amino)acetate (46 mg, 0.26 mmol) in methanol and 1.0 M lithium hydroxide (3 mL, 3:1) in methanol (9 mL) at room temperature

Collins, Gary S.

173

dence, T* increasing with decreasing Tc, is the expected one for such a pseudogap. But  

E-Print Network (OSTI)

strips and split ring resonators on interlocking strips of standard circuit board material. By measuring of refraction (n) is negative. The material consists of a two-dimensional array of repeated unit cells of copper phenomena, whereby when a beam of radiation is incident on an interface between two materials

La Rosa, Andres H.

174

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

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

ceiling. Attention to detail helps Clifton achieve a very airtight envelope that shows air leakage of only 0.67 air changes per hour at 50 Pascals pressure difference (ACH 50)...

175

Magnetic Induction of dx2-y2 + idxy Order in High- Tc Superconductors  

Science Journals Connector (OSTI)

I propose that the phase transition in Bi2Sr2CaCu2O8 recently observed by Krishana et al. [Science 277, 83 (1997)] is the development of a small dxy superconducting order parameter phased by ?/2 with respect to the principal dx2-y2 one to produce a minimum energy gap ?. The violation of both parity and time-reversal symmetry allows the development of a magnetic moment, the key to explaining the experiment. The origin of this moment is a quantized boundary current of IB=2e?/h at zero temperature.

R. B. Laughlin

1998-06-08T23:59:59.000Z

176

High-Tc Oxides 13 Years Since “Woodstock”: From Fundamentals to Nanoengineering  

Science Journals Connector (OSTI)

Following introductory remarks on the “future history” of superconductivity, I discuss several discrepances concerning doping dependence of the “pseudogap” and open questions across the complex electronic phase d...

Davor Pavuna

2000-12-01T23:59:59.000Z

177

Corrig rsum de l'examen TC9 : Plasmas astrophysiques (cours N. Meyer)/29 Novembre 2006  

E-Print Network (OSTI)

dynamique : nmpV 2 1.3 � 10-9 /r2 UA Pa. (b) rUA [1.3 � 10-9 /2 � 10-13 ]1/2 81. (c) On pourrait noter que l est négligeable. D'où : Iph/IeI 3 � 103 /r2 UA rUA > 102

Demoulin, Pascal

178

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

E-Print Network (OSTI)

, but additional conditions must now be im- posed, such as slow variation in time (i.e., with (u ? ~4~), and in space (i.e. , with I && 7,/ Vr, where T, is the transition temperature and VF the Fermi velocity). {Throughout this paper, we have used units with A... revealed that the functions I,++ I, are closely related to the quasiparticle distribution function (more pre- cisely, the even and odd parts of it, with respect to the energy variable e, which is measured with respect to the Fermi energy e...

Hu, Chia-Ren.

1980-01-01T23:59:59.000Z

179

Hall effect in the marginal Fermi liquid regime of high-Tc superconductors  

Science Journals Connector (OSTI)

The detailed derivation of a theory for transport in quasi-two-dimensional metals, with small-angle elastic scattering and angle-independent inelastic scattering is presented. The transport equation is solved for a model Fermi surface representing a typical cuprate superconductor. Using the small-angle elastic and the inelastic scattering rates deduced from angle-resolved photoemission experiments, good quantitative agreement with the observed anomalous temperature dependence of the Hall angle in optimally doped cuprates is obtained, while the resistivity remains linear in temperature. The theory is also extended to the frequency-dependent complex Hall angle.

Elihu Abrahams and C. M. Varma

2003-09-04T23:59:59.000Z

180

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

E-Print Network (OSTI)

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

N. Ilieva; W. Thirring

2000-01-17T23:59:59.000Z

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.


181

R5 TechComm N2 Keynotes 2011  

E-Print Network (OSTI)

Immunogold Electron Microscopy TC5-LM3 TC5-LM4 Fluorescent checking TC5-LM1 TC5-LM2 Confocal microscopy TC5-LM3 TC5-LM4 Fluorescence microscopy Auto- fluorescence Fluorescent staining Other samples TC5-LM5 Monoclonal antibody * TC4-E10 ELISA system TC4-E11 Epitope prediction TC5 TC5-EM1 SEM or TEM TC5-LM2

Wu, Yih-Min

182

Apparel, Merchandising, and Design Major College of Human Sciences  

E-Print Network (OSTI)

Secondary Option Elective 3 Total 12.5 Total 15 Fall Spring TC 245, Aesthetics and Brand Image 3 TC 231 Brand Management & Promotion 3 Humanities Selection (TC 257, TC 354, TC 356, or AESHM 342) 3 Elective 3

Lin, Zhiqun

183

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

184

Proceedings of the IFIP TC6 Networking 2000 Conference, Paris France, 2000 QoS Rewards and Risks  

E-Print Network (OSTI)

; technique allows changing tra#c demands by dynamically adjusting the link bandwidth price in response that charges users for their consumption of resources, and prices are set based on supply and demand [1, 4, 6 occur. Due to the finite supply of resources and the various demands, fairly and e#ciently allocating

Fulp, Errin W.

185

Proceedings of the IFIP TC6 Networking 2000 Conference, Paris France, 2000 QoS Rewards and Risks  

E-Print Network (OSTI)

traffic demands by dynamically adjusting the link bandwidth price in response to current supply and demand for their consumption of resources, and prices are set based on supply and demand [1, 4, 6, 11]. Alternatively, prices to the finite supply of resources and the various demands, fairly and efficiently allocating resources

Fulp, Errin W.

186

Western Society of Weed Science, Albuquerque, New Mexico. March 10-12, 2009. Skurski TC, Maxwell, BD, and Rew LJ  

E-Print Network (OSTI)

" approaches are utilized to measure the competitive effects of NIS: weed removal and weed addition8. We to four treatments: manual removal of B. tectorum, ground disturbance to mimic that caused in the manual removal plots, herbicide application (fall application of Plateau at 10 oz/acre). We hypothesize

Maxwell, Bruce D.

187

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

E-Print Network (OSTI)

states and segregation of the sample when heated in vacuum and oxygen, and when reacted with water vapor. In addition, the effect of plasma treatment on the surface was investigated. The surface chemistry of this material is very complex..., with the surface composition varying substantially with treatment conditions. The equilibrium surface composition of the material is determined by surface energy and reaction driven surface changes. Contamination and selective surface segregation operate...

Liu, Hong-Xia

2012-06-07T23:59:59.000Z

188

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

E-Print Network (OSTI)

. A simple model predicts the observed ratio of the effect of Ar to that of Ne and the relative magnitudes of the shifts for the four different metals. I. INTRODUCTION In the theory of strong-coupling superconductors the transition temperature T... is presented. The results of the model are used with expressions for the transition tempera- ture of strong-coupling superconductors ' ~ to pre- dict the effect of the noble-gas adsorbate on T,. Although it is improbable that the only effect of the noble...

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

1973-01-01T23:59:59.000Z

189

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

SciTech Connect

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

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

2013-12-15T23:59:59.000Z

190

Signaling Mediated by the Closely Related Mammalian Rho Family GTPases TC10 and Cdc42 Suggests Distinct Functional Pathways  

Science Journals Connector (OSTI)

...the absence or presence of a 3-fold excess of RhoGDIa expression construct. At 24...the absence or presence of a 3-fold excess of a RhoGDIa expression construct by LipofectAMINE...Transformation of Saccharomyces cerevisiae by the lithium acetate/single-stranded carrier DNA...

Gretchen A. Murphy; Stephanie A. Jillian; David Michaelson; Mark R. Philips; Peter D'Eustachio; and Mark G. Rush

2001-03-01T23:59:59.000Z

191

Design and current-limiting simulation of magnetic-shield type superconducting fault current limiter with high-Tc superconductors  

SciTech Connect

The continuous development of electric power utilities has led to the increase in the problems concerning fault currents. The use of fault current limiters, which suppress fault currents below a prescribed level, has been examined in many places. The authors have studied a superconducting fault current limiter that is based on the magnetic shielding effect of superconductors. In this paper, the authors derive a requirement for leading to a flux-jumping inside a ceramic superconductor at liquid nitrogen temperature. Next, two kinds of magnetic-shield type superconducting fault current limiters are designed, and their current-limiting simulations are tried using a computer.

Kajikawa, K.; Kaiho, K.; Tamada, N. [Electrotechnical Lab., Tsukuba, Ibaraki (Japan)] [Electrotechnical Lab., Tsukuba, Ibaraki (Japan); Onishi, T. [Hokkaido Univ., Sapporo (Japan)] [Hokkaido Univ., Sapporo (Japan)

1996-07-01T23:59:59.000Z

192

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

SciTech Connect

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

193

Suppression of super-knock in TC-GDI engine using two-stage injection in intake stroke (TSII)  

Science Journals Connector (OSTI)

Turbocharging and direct injection are main technologies used for energy-saving gasoline engines. But the biggest challenge is super-knock, whose mechanism is unclear and has no effective strategy to suppress thi...

Zhi Wang; YaQi Xu; JianXin Wang

2014-01-01T23:59:59.000Z

194

Boundary Condition on the Order Parameter at a Tunneling Barrier in a Pure Superconductor (T=Tc)  

Science Journals Connector (OSTI)

We consider the nucleation of superconductivity at a ?-function plane barrier in a free-electron super-conductor. We calculate the exact kernel of Gorkov's linear integral equation for the order parameter ?, and compare it with the kernel derived by de Gennes for a similar model on the basis of a correlation-function argument which has not been rigorously justified as yet. The two kernels are not the same, particularly near the barrier, but the difference oscillates with wavelength ?kF and is negligible for the purpose of calculating asymptotic boundary conditions on the order parameter. We thus confirm for our model the boundary condition predicted by de Gennes, ?+=?-+(?1-t??t?)?0d?dx|0.

R. G. Boyd

1968-03-10T23:59:59.000Z

195

Radioimmunoscintigraphy of Head and Neck Cancer Using 99mTc-labeled Monoclonal Antibody E48 F(ab?)2  

Science Journals Connector (OSTI)

...been demonstrated to localize squamous cell car cinoma in the nude mice model with high specificity...field of view gamma camera (Gemini; General Electric, Milwaukee, WI) equipped with a low energy parallel hole collimator and connected to a...

Guus A. M. S. van Dongen; Hein Leverstein; Jan C. Roos; Jasper J. Quak; Michiel W. M. van den Brekel; Arthur van Lingen; Harrie J. M. Martens; Jonas A. Castelijns; Gerard W. M. Visser; Chris J. L. M. Meijer; Gerrit J. J. Teule; and Gordon B. Snow

1992-05-01T23:59:59.000Z

196

“Giant” Enhancement of the Upper Critical Field and Fluctuations above the Bulk Tc in Superconducting Ultrathin Lead Nanowire Arrays  

Science Journals Connector (OSTI)

superconductivity; nanowires; mesoporous silica matrixes; thermodynamic properties; electric transport ... In a quasi-1D superconducting material thermally induced phase slips in the order parameter will cause finite resistance at T > 0 K.(15, 16) However, when many quasi-1D elements are parallel and form arrays, it was predicted from theory(17-24) and experimentally demonstrated(25, 26) that a 3D long-range-ordered state can be formed, if these elements are weakly coupled in the lateral plane. ... Bulk Pb is a well-known elementary superconductor with 83 nm coherence length. ...

Mingquan He; Chi Ho Wong; Pok Lam Tse; Yuan Zheng; Haijing Zhang; Frank L. Y. Lam; Ping Sheng; Xijun Hu; Rolf Lortz

2013-04-08T23:59:59.000Z

197

Analysis of exponential decay curves of mixtures  

E-Print Network (OSTI)

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

Cobb, Tommy

1966-01-01T23:59:59.000Z

198

Apparel, Merchandising, and Design Major College of Human Sciences  

E-Print Network (OSTI)

Science 4 Total 12.5 Total 16 Fall Spring TC 245, Aesthetics and Brand Image 3 TC Humanities Elective (TC

Lin, Zhiqun

199

Nonlinear seismic response analysis of steel-concrete composite frames  

E-Print Network (OSTI)

frame model 10TN (Northridge seismic input) floor 1 floor 2frame model 10TC (Northridge seismic input) Slip (mm) floorframe models 06TC, 10TC and 14TC (Northridge seismic input)

Barbato, Michele

2008-01-01T23:59:59.000Z

200

RADIATION DOSE ESTIMATES TO ADULTS AND CHILDREN FROM VARIOUS  

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

9 18. Tc-99m MIBI 10 19. Tc-99m Pertechnetate injection 10 20. Tc-99m Pertechnetate infusion 11 21. Tc-99m Ppi 11 22. Tc-99m RBC (in-vivo labeling) 11 23. Tc-99m RBC (in-vitro...

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

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

E-Print Network (OSTI)

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

Zhao, Hongwei

2005-08-29T23:59:59.000Z

202

Interleukin-7 Permits Th1/Tc1 Maturation and Promotes Ex vivo Expansion of Cord Blood T Cells: A Critical Step toward Adoptive Immunotherapy after Cord Blood Transplantation  

Science Journals Connector (OSTI)

...10). Expansion was started at 6 105 to 8 105 T cells/mL in gas-permeable VueLifeTeflon bags (American Fluoroseal). T cells...comments; Eli Lien for ClinExVivo Dynabeads; Susan Buntz, Jeff Hale, and Melissa Ventevogel for technical assistance; and the staff...

Craig C. Davis; Luciana C. Marti; Gregory D. Sempowski; Durairaj A. Jeyaraj; and Paul Szabolcs

2010-07-01T23:59:59.000Z

203

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

SciTech Connect

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

Ken Marken

2009-05-20T23:59:59.000Z

204

Magnetic relaxation, current-voltage characteristics, and possible dissipation mechanisms for high-Tc superconducting thin films of Y-Ba-Cu-O  

Science Journals Connector (OSTI)

We propose a mechanism that may account for the temperature-insensitive relaxation of the magnetic-shielding current in epitaxial thin films of YBa2Cu3O7-?. We show that such relaxation is related to the shape of the current-voltage (J-E) characteristic of the superconductor in its critical state. The weak temperature dependence of the relaxation implies a temperature-insensitive J-E characteristic that resembles that of conventional type-II superconductors when a spatial variation of critical current density (Jc) is present. We suggest such a distribution of Jc as an explanation for the apparently large and temperature-insensitive relaxation observed in YBa2Cu3O7-?.

J. Z. Sun; C. B. Eom; B. Lairson; J. C. Bravman; T. H. Geballe

1991-02-01T23:59:59.000Z

205

Measured bremsstrahlung photonuclear production of 99Mo (99mTc) with 34 MeV to 1.7 GeV Electrons  

Science Journals Connector (OSTI)

Abstract 99Mo photonuclear yield was measured using high-energy electrons from Laser Plasma Accelerators and natural molybdenum. Spectroscopically resolved electron beams allow comparisons to Monte Carlo calculations using known 100Mo(?,n)99Mo cross sections. Yields are consistent with published low-energy data, and higher energy data are well predicted from the calculations. The measured yield is (15+/?2)×10?5 atoms/electron (0.92+/?0.11 GBq/?A) for 25 mm targets at 33.7 MeV, rising to (1391+/?20)×10?5 atoms/electron (87+/?2 GBq/?A) for 54 mm/ 1.7 GeV, with peak power-normalized yield at 150 MeV.

A.D. Roberts; C.G.R. Geddes; N. Matlis; K. Nakamura; J.P. O'Neil; B.H. Shaw; S. Steinke; J. van Tilborg; W.P. Leemans

2014-01-01T23:59:59.000Z

206

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

207

Magnetic and structural transitions in the iron-chalcogenide high-Tc superconductor: K0.8Fe1.76Se2.00  

SciTech Connect

Fe-57 Mossbauer spectroscopy was used to study single-crystals of K0.8Fe1.76Se2.00 from 6K to 673 K. At 6K, the hyperfine field (B-hf) is canted away from the c-axis by 18 +/- 3 degrees. The temperature dependence of B-hf follows a spin wave model with a spin excitation gap of 9 +/- 1 meV. A sudden increase in the linewidth and a corresponding drop in (1/2)eQV(zz) at T-N - 532K are indications of strong coupling between the magnetic and structural transitions. (C) 2012 American Institute of Physics.

Rowan-Weetaluktuk, W.N.; Ryan, D.H.; Cadogan, J.M.; Hu, R.; Budko, S.L.; Canfield, P.C.

2012-02-29T23:59:59.000Z

208

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

SciTech Connect

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

Davis, James

2014-05-14T23:59:59.000Z

209

IMACS-TC1'93 Ecole Polytechnique de Montral July 7th to 9th 1993 CURRENT FEEDING OF SWITCHED RELUCTANCE MOTOR.  

E-Print Network (OSTI)

OF SWITCHED RELUCTANCE MOTOR. OPTIMIZATION OF THE CURRENT WAVE FORM TO MINIMIZE THE TORQUE RIPPLE. LE CHENADEC ripple remains one of the main problem linked to the use of switched reluctance motor. In order to use reluctance motor since one hundred and fifty years, their development kept limited until the beginning

Paris-Sud XI, Université de

210

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.

211

Structure and Magnetic Ordering of a 2-D MnII(TCNE)I(OH2) (TCNE = tetracyanoethylene) Organic-based Magnet (Tc = 171 K)  

SciTech Connect

Mn{sup II}(TCNE)I(OH{sub 2}) was isolated from the reaction of tetracyanoethylene (TCNE) and MnI{sub 2}(THF){sub 3}, and has a 2-D structure possessing an unusual, asymmetric bonded {mu}{sub 4}-[TCNE]{sup {sm_bullet}-}. Direct antiferromagnetic coupling between the S = 5/2 Mn{sup II} and S = 1/2 [TCNE]{sup {sm_bullet}-} leads to magnetic ordering as a canted antiferromagnet at a T{sub c} of 171 K.

S Lapidus; A McConnell; P Stephens; J Miller

2011-12-31T23:59:59.000Z

212

Tc of 11K Identified for the Third Polymorph of the (BEDT-TTF)(BEDT-TTF){<_2}Ag(CF{<_3}){<_4}(TCE) Organic Superconductor.  

SciTech Connect

The crystal structure of the third polymorph of the organic superconductor (BEDT-TTF){sub 2}Ag(CF{sub 3}){sub 4}(TCE), where BEDT-TTF is bis(ethylenedithio)tetrathiafulvalene and TCE is 1,1,2-trichloroethane, has been investigated. The crystal consists of alternating stacks of two types of donor sheets, {Kappa}- and {alpha}-types. Although this structure is similar to the previously solved two-layered high-T{sub c} phase of (BEDT-TTF){sub 2}Ag(CF{sub 3}){sub 4}(TCE), the axis perpendicular to the conducting layer of the unit cell of the new phase is twice as large as that of the two-layered phase; thus, four layers form the repeating unit. Superconductivity is attributed to the {Kappa}-type conducting layer, because the {alpha}-type conducting layer is in an acentric charge-ordered state. The onset superconducting transition temperatures are approximately 11.0 and 9.5 K for the four-layered and two-layered phases, respectively.

Kawamoto, T.; Mori, T.; Nakao, A.; Murakami, Y.; Schlueter, J. A. (Materials Science Division); (Tokyo Inst. Tech.); (High Energy Accl. Res. Org.)

2012-01-01T23:59:59.000Z

213

Energy gaps in the failed high-Tc superconductor La1:875Ba0:125CuO4  

E-Print Network (OSTI)

B. The pseudogap i n high-temperature superconductors: A ntwo gaps of the high-temperature superconductor B i S r C u

He, R.-H.

2012-01-01T23:59:59.000Z

214

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

SciTech Connect

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

215

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

SciTech Connect

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

216

NMR Characterization of Sulphur Substitution Effects in the KxFe2?ySe2?zSz High-Tc Superconductor  

SciTech Connect

We present a {sup 77}Se NMR study of the effect of S substitution in the high-T{sub c} superconductor K{sub x}Fe{sub 2-y}Se{sub 2-z}S{sub z} in a temperature range up to 250 K. We examine two S concentrations, with z = 0.8 (T{sub c} {approx} 26 K) and z = 1.6 (nonsuperconducting). The samples containing sulphur exhibit broader NMR line shapes than the K{sub x}Fe{sub 2}Se{sub 2} sample due to local disorder in the Se environment. Our Knight shift {sup 77}K data indicate that in all samples, uniform spin susceptibility decreases with temperature, and that the magnitude of the Knight shift itself decreases with increased S concentration. In addition, S substitution progressively suppresses low-frequency spin fluctuations. None of the samples exhibit an enhancement of low-frequency antiferromagnetic spin fluctuations near T{sub c} in 1/T{sub 1}T, as seen in FeSe.

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

2012-04-17T23:59:59.000Z

217

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

E-Print Network (OSTI)

Beijing 100084, China Glenn T. Seaborg Center, LawrenceLinfeng Rao, Glenn T. Seaborg Center, Lawrence Berkeley

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

2005-01-01T23:59:59.000Z

218

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

ScienceCinema (OSTI)

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

Ken Marken

2010-01-08T23:59:59.000Z

219

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

E-Print Network (OSTI)

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

Nguyen, Clark T.-C.

220

Deviations from Fermi-liquid behavior in (2+1)-dimensional quantum electrodynamics and the normal phase of high-Tc superconductors  

Science Journals Connector (OSTI)

We argue that the gauge-fermion interaction in multiflavor quantum electrodynamics in (2+1) dimensions is responsible for non-Fermi-liquid behavior in the infrared, in the sense of leading to the existence of a nontrivial (quasi)fixed point that lies between the trivial fixed point (at infinite momenta) and the region where dynamical symmetry breaking and mass generation occurs. This quasifixed-point structure implies slowly varying, rather than fixed, couplings in the intermediate regime of momenta, a situation which resembles that of (four-dimensional) "walking technicolor" models of particle physics. The inclusion of wave-function renormalization yields marginal O(1N) corrections to the "bulk" non-Fermi-liquid behavior caused by the gauge inter-action in the limit of infinite flavor number. Such corrections lead to the appearance of modified critical exponents. In particular, at low temperatures there appear to be logarithmic scaling violations of the linear resistivity of the system of order O(1N). The connection with the anomalous normal-state properties of certain condensed-matter systems relevant for high-temperature superconductivity is briefly discussed. The relevance of the large (flavor) N expansion to the Fermi-liquid problem is emphasized. As a partial result of our analysis, we point out the absence of charge-density-wave instabilities from the effective low-energy theory, as a consequence of gauge invariance.

I. J. R. Aitchison and N. E. Mavromatos

1996-04-01T23:59:59.000Z

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.


221

2,279 METERS BOUYANT POLYOLEFIN MOORING LINE  

E-Print Network (OSTI)

2,279 METERS BOUYANT POLYOLEFIN MOORING LINE 4,900 METERS NYLON LINE, CONTINUOUS 700 METERS KEO 1: DATE: DATE: MOORING: SCOPE: NOAA-PMEL-KE 1.4:1 TC5 METERS 700 METERS WIRE ROPE FAIRING TO 500 METERS TC10 METERS 50 METERS 25 METERS TC TC 75 METERS TC 100 METERS TP 150 METERS TC 200 METERS TC 300 METERS

222

Apparel, Merchandising, and Design Major College of Human Sciences  

E-Print Network (OSTI)

, Sourcing & Global Issues 3 TC 225, Patternmaking I 4 Elective 3 Elective 3 Total 16 Total 15 Fall Spring TC 4 Total 12.5 Total 16 Fall Spring TC 245, Aesthetics and Brand Image 3 TC 221, Apparel Assembly in TC 2 Elective 3 Elective 1 AESHM 311, Career and Internship Prep 1 Total 15 Total 17 Fall Spring

Lin, Zhiqun

223

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)

224

Concurrent observations of air pollutants at two sites in the Pearl River Delta and the implication of regional transport  

E-Print Network (OSTI)

ethylbenzene (b) i-butane to propane at TC and WQS H. Guo etto ethylbenzene (b) i-butane to propane at TC and WQS duringto ethylbenzene (b) i-butane to propane at TC and WQS during

2009-01-01T23:59:59.000Z

225

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)

GWh) NG effect (%) carbon emissions (tC) carbon effect (%)GWh) NG effect (%) carbon emissions (tC) carbon effect (%)GWh) NG effect (%) carbon emissions (tC) carbon effect (%)

Stadler, Michael

2009-01-01T23:59:59.000Z

226

Effects of pacing site on global and regional left ventricular function in the setting of dyssynchronous heart failure  

E-Print Network (OSTI)

Tachampa K, Ait Mou Y, Farman GP, and Irving TC. MyofilamentTachampa K, Ait Mou Y, Farman GP, and Irving TC. Myofilament

Howard, Elliot Jacob

2011-01-01T23:59:59.000Z

227

?>*)3>OOOlt>A -j^t I Ris-R-628(EN)  

E-Print Network (OSTI)

-Tc Superconducting Thin Film Components The Materials Development Program on: Synchroton Radiation Studies

228

Metal compounds in therapy and diagnosis  

Science Journals Connector (OSTI)

...1993 To-MIBI EtOOC N 0 N T E Tc-ECD H lCH ~N.. \\/N\\ N? c; Tc-CI(CDO)3MeB, COOEt N 0o COOH Tc-MAG3 H Tc-HMPAO Fig. 3. Some technetium radiopharmaceuticals of known chemical structure. radiohalogens (such as '8F and 1231...

MJ Abrams; BA Murrer

1993-08-06T23:59:59.000Z

229

Analysis, Design, And Evaluation Of AVCS For Heavy-duty Vehicles: Phase 1 Report  

E-Print Network (OSTI)

fuel consumption. iii Contents 1 Introduction 2 Longitudinal Truck Model Turbocharged TC diesel engine

Yanakiev, Diana; Kanellakopoulos, Ioannis

1995-01-01T23:59:59.000Z

230

Final Meeting Summary Page 1  

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

... 4 Final Tank Closure and Waste Management Environmental Impact Statement (TC & WM EIS) (joint with PIC) ......

231

Chemical and Biological Engineering MPC Introduction  

E-Print Network (OSTI)

LC LC cooling water Toluene Hydrogen purge Hydrogen, Methane fuel gas steam steamsteam Diphenyl Compressor cooling water CW CW quench TC LC LC LC TC open FC FC FC FC TC CC TC #12;B. Wayne Bequette for Advanced Control Economic return justifies capital and on-going maintenance costs Model Predictive Control

Grossmann, Ignacio E.

232

Radiative decay of the 4d5(6S)5p z5,7Po states in Tc II: comparison along the homologous and isoelectronic sequences. Application to astrophysics  

Science Journals Connector (OSTI)

......Hartree-Fock (HFR) option of the rcn code (Cowan 1981) was used to get the atomic...nd4 ns +nd6+nd5 nd +nd4 nd +nd3 ns2 nd +nd4 np2 for the even parity; nd5...technique has been implemented in Cowan's codes and described in details elsewhere......

P. Palmeri; P. Quinet; É. Biémont; A. V. Yushchenko; A. Jorissen; S. Van Eck

2007-01-01T23:59:59.000Z

233

Beyond weather time scale prediction for Hurricane Sandy and Super Typhoon Haiyan in a global climate model  

Science Journals Connector (OSTI)

While tropical cyclone (TC) prediction, in particular TC genesis, remains very challenging, accurate prediction of TCs is critical for timely preparedness and mitigation. Using a new version of the Geophysical Fluid Dynamics Laboratory (GFDL) ...

Baoqiang Xiang; Shian-Jiann Lin; Ming Zhao; Shaoqing Zhang; Gabriel Vecchi; Tim Li; Xianan Jiang; Lucas Harris; Jan-Huey Chen

234

The Tropical Cyclone Diurnal Cycle of Mature Hurricanes  

Science Journals Connector (OSTI)

The diurnal cycle of tropical convection and the tropical cyclone (TC) cirrus canopy has been described extensively in previous studies. However, a complete understanding of the TC diurnal cycle remains elusive and is an area of ongoing research. ...

Jason P. Dunion; Christopher D. Thorncroft; Christopher S. Velden

2014-10-01T23:59:59.000Z

235

Anticipating the future use of safeguards by the EU and the US on China’s textiles & clothing exports  

Science Journals Connector (OSTI)

Textiles and clothing (T&C) trade after lapse of quotas in 2005 has revealed China’s overwhelming comparative advantage in the manufacture and export of T&C products. China’s advantage in this sector attracted th...

Umair Hafeez Ghori

2011-12-01T23:59:59.000Z

236

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

E-Print Network (OSTI)

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

Varghese, Joshua

2011-08-02T23:59:59.000Z

237

Thermal Cycling Combined with Dynamic Mechanical Load: Preliminary...  

Office of Environmental Management (EM)

System) Solar Panel Large Walk---in Chambers 2 Task-2 Region: JP DML ---> TC SequenNal Test 1. RecogniNon of Current SituaNon --- TC 200 is not enough (NREL PV Module Reliability...

238

E-Print Network 3.0 - ag-clad bi-2223 superconductors Sample...  

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

HTS? Summary: about anisotropy? Practical implications of high anisotropy YBCO: 3D vortex line Bi2223: 2D vortex disks... 1G Bi-2223 Tc 115 K, 50 2G YBCO Tc 92 K, 5...

239

Interdecadal changes in summertime tropical cyclone precipitation over Southeast China during 1960–2009  

Science Journals Connector (OSTI)

This study examines the changes in tropical cyclone (TC) precipitation and the associated contributing factors over Southeast China during 1960–2009. Climatologically, TC rainfall accounts for approximately 20–40% of the total rainfall over ...

Richard C. Y. Li; Wen Zhou

240

E-Print Network 3.0 - acute myocardial injury Sample Search Results  

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

1 High-Resolution Imaging with 99mTc-Glucarate for Assessing Myocardial Injury in Rat Heart Summary: High-Resolution Imaging with 99mTc-Glucarate for Assessing Myocardial Injury...

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

E-Print Network 3.0 - acute myocardial necrosis Sample Search...  

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

1 High-Resolution Imaging with 99mTc-Glucarate for Assessing Myocardial Injury in Rat Heart Summary: images with 99mTc-GLA would make it possible to identify myocardial acute...

242

APPAREL, MERCHANDISING, AND DESIGN Iowa State University 2012 Catalog  

E-Print Network (OSTI)

Development and Manufacturing (3) TC 245 Aesthetics and Brand Image (3) AESHM 275 Retail Merchandising (1 Development TC 499 Undergraduate Research AESHM 340 Hspm & Apparel Mkt Strategies (or Mkt 340) AESHM 377 Brand

Lin, Zhiqun

243

Ris National Laboratory DTU Radiation Research Department  

E-Print Network (OSTI)

-life of 2.13�105 yeas. Although 99 Tc is a naturally occurring radionuclide, the main sources of 99 TcRisø National Laboratory DTU Postprint Radiation Research Department Year 2007 Paper: www

244

Microsoft Word - 2010_0204_Feb_2010_HAB_Summary_FINAL.doc  

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

of the TC&WM EIS; worked together with RAP to complete the scope for the independent review of the TC&WM EIS. Larry said the Board should see a report from the consultant...

245

Supplemental Treatment Technologies Hanford Advisory Board Tank...  

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

of the waste form in the integrated disposal facility. If the Tc were precipitated as Goethite - (Tc,Fe)OOH - it could be diverted to the HLW stream . - Testing will focus on...

246

Prediction of automotive turbocharger nonlinear dynamic forced response with engine-induced housing excitations: comparisons to test data  

E-Print Network (OSTI)

angles) derived from measured TC center housing accelerations. Analysis of recorded housing accelerations shows the IC engine induces TC motions with a broad range of subsynchronous frequencies, rich in engine (e) superharmonics. In particular, 2e and 4e...

Maruyama, Ashley Katsumi

2009-05-15T23:59:59.000Z

247

New Solution Approaches to the General Single Machine Earliness ...  

E-Print Network (OSTI)

Index Terms— single-machine, earliness-tardiness, branch- and-bound .... f(x, tc), the cost of job set x at completion time tc on label L l the slope of label L. L.

2006-11-19T23:59:59.000Z

248

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

SciTech Connect

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

249

Nonadiabatic theory of the superconducting state E. Cappelluti,1  

E-Print Network (OSTI)

, 74.20.Mn I. INTRODUCTION High-Tc superconductors present a complex phenomenol- ogy that can be hardly

Cappelluti, Emmanuele

250

E-Print Network 3.0 - angle-resolved photoemission spectra Sample...  

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

Where Metals, semiconductors, molecules, surfaces, nanosystems... : double phase transition (Morin 59) Tc 340 K ... Source: Botti, Silvana - Laboratoire des Solides...

251

Tropical Cyclogenesis Factors in a Warming Climate  

E-Print Network (OSTI)

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

Cathey, Stephen Christopher

2012-02-14T23:59:59.000Z

252

Heat and Metal Transfer in Gas Metal Arc Welding Using Argon and Helium  

E-Print Network (OSTI)

. Massachusetts Institute of Tc:chnology, is Head of Secondary Metallurgy Group with MEFOS. Lulea, Sweden. T

Eagar, Thomas W.

253

Microsoft Word - HAB_FINAL_Feb07_Summ.doc  

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

... 6 Issue Manager Update on the Tank Closure and Waste Management Environmental Impact Statement (TC&WM EIS) ......

254

Email Template  

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

... 1 Tank Closure and Waste Management Environmental Impact Statement (TC&WM EIS) 1 River Protection System Plan, Rev. 4...

255

Tropical cyclone genesis efficiency: mid-level versus bottom vortex Xuyang Ge and Tim Li  

E-Print Network (OSTI)

;4 1. Introduction Tropical cyclone (TC) genesis is the least understood phase in a TC life cycle is cyclogenesis in an environment with a mid-level vortex (EMV). An analysis of the WNP TC genesis in 2000 the QuikSCAT-derived surface wind observations, there was no sign

Li, Tim

256

THE PATIENT AS A RADIOACTIVE SOURCE: AN INTERCOMPARISON OF SURVEY METERS FOR MEASUREMENTS IN NUCLEAR MEDICINE  

Science Journals Connector (OSTI)

......radiation field of four common radiopharmaceuticals containing 18F, 90Y, 99mTc...quantities Nominal measuring range SM 1: FH-40 G-L1 H x 0...99mTc. d [m] (F-18) (SM 1-3) [muSv GBq1 h1] (Tc-99m) (SM 1-3) [muSv GBq1 h1......

K. Uhrhan; A. Drzezga; F. Sudbrock

2014-07-01T23:59:59.000Z

257

Orbital Waves in He3-A at Zero Temperature  

Science Journals Connector (OSTI)

At zero temperature, orbital waves propagate in He3-A with a dispersion relation ?=qzvF in the regime Tc2EF????Tc; the damping is also studied. In the regime ???Tc2EF, undamped orbital waves propagate with the dispersion relation ??(EFTc2)(qzvF)2ln(TcqzvF).

M. Combescot and R. Combescot

1976-08-09T23:59:59.000Z

258

Cadet Troop Leader Training (CTLT) The Cadet Troop Leader Training (CTLT) provides Cadets the  

E-Print Network (OSTI)

's in educating cadets on the CTLT Platoon Leader program. Installation and Branches offered: · Fort Bliss, Texas: AD, OD · Fort Benning, Georgia: AR, EN, FA, IN, OD, QM, TC · Fort Drum, New York: AV, EN, FA, IN, OD, QM, SC, TC · Fort Eustis, Virginia: AG, AV, MP, TC · Fort Gordon, Georgia: OD · Fort Hood, Texas: AG

Maxwell, Bruce D.

259

Tetrahydrothiophene complexes of technetium(IV)  

Science Journals Connector (OSTI)

A technetium(IV) complex of the composition trans-[TcCl4(tht)2] (tht = tetrahydrothiophene) is formed during heating of \\{K2TcCl6\\} in a mixture of tht and aqueous HCl. The thioether ligands are only weakly bonded and the red crystals slowly decompose under release of tht. The weak technetium–sulphur bonds are confirmed by Tc–S distances of 2.494(1) Å. The anionic thioether technetium(IV) complex [TcBr5(tht)]? is formed by the reaction of (NBu4)2[TcBr6] with neat tht. The tetrabutylammonium salt of the complex is indefinitely stable in air.

Adelheid Hagenbach; Ulrich Abram

2004-01-01T23:59:59.000Z

260

Utilization of oilseed proteins in precooked breakfast sausage  

E-Print Network (OSTI)

Isolate SF CF TS TC SI CI 10% 2c 2 2 2 2 2 2 SF = soy flour; CF = cottonseed flour; TS = textured soy flour; TC = textured cottonseed flour; SI = soy isolate; CI = cottonseed isolate. b Replacement level based on 10% replacement of meat...:TS SI:TS CI:TS SF:TC CF:TC SI:TC CI:TC b 10% 2c 2 2 2 2 2 2 2 2 20% 2 2 2 2 2 2 2 2 30% 2 2 2 2 2 2 2 2 SF = soy flour; CF = cottonseed flour; TS = textured soy flour; TC = textured cottonseed flour; SE = soy isolate; CI = cottonseed isolate. b...

Harward, Eugene Rees

1979-01-01T23:59:59.000Z

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.


261

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

E-Print Network (OSTI)

VOLUME 83, NUMBER 10 P H Y S I C A L R E V I E W L E T T E R S 6 SEPTEMBER 1999 Kinetic Roughening) Kinetic roughening of flux fronts penetrating in superconducting thin films are studied by means of a high resolution magneto-optic technique. The roughening exponent a 0.64 and growth exponent b 0.65 obtained from

Wijngaarden, Rinke J.

262

M. A. Abdelmoneum, M. U. Demirci, S.-S. Li, and C. T.-C. Nguyen, "Post-fabrication laser trimming of micromechanical filters," Technical Digest, IEEE Int. Electron Devices Mtg., San Francisco, California, Dec. 13-15, 2004, pp. 39-42.  

E-Print Network (OSTI)

of micromechanical filters," Technical Digest, IEEE Int. Electron Devices Mtg., San Francisco, California, Dec. 13 absolute and matching tolerances in planar processes, this trim procedure might eventually be instrumental

Nguyen, Clark T.-C.

263

Development and biologic evaluation of a kit for preformed chelate technetium-99m radiolabeling of an antibody Fab fragment using a diamide dimercaptide chelating agent  

SciTech Connect

A kit has been developed for 99mTc antibody radiolabeling via defined chemistry using an N2S2 diamide dimercaptide bifunctional chelating agent and the performed chelate method. The process involved efficient transchelation of 99mTc from gluconate to 2,3,5,6-tetrafluorophenyl 4,5-bis-S-(1-ethoxyethyl) mercaptoacetamidopentanoate as an active ester ligand and subsequent conjugation to antibody lysine amine functional groups. The use of the ethoxyethyl group for sulfur protection allowed optimum yields of 99mTc N2S2 chelate formation with complete retention of the active ester. Subsequent addition of antibody Fab fragment gave 99mTc chelate conjugates indistinguishable from the stepwise in situ esterification and purification of the 99mTc N2S2 complex followed by conjugation as previously shown to give stable 99mTc antibody fragments with retained immunoreactivity and tumor-targeting properties.

Kasina, S.; Rao, T.N.; Srinivasan, A.; Sanderson, J.A.; Fitzner, J.N.; Reno, J.M.; Beaumier, P.L.; Fritzberg, A.R. (NeoRx Corporation, Seattle, WA (USA))

1991-07-01T23:59:59.000Z

264

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.

Mirzadeh, Saed (Knoxville, TN); Knapp, Jr., Furn F. (Oak Ridge, TN); Collins, Emory D. (Knoxville, TN)

1998-01-01T23:59:59.000Z

265

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

266

A study of d/dt - matrices  

E-Print Network (OSTI)

)) 8. Finally, we output each latent root with its corresponding right and left latent vectors. tt Ct Ct Ct Ctttt 502 503 t t t t t t t t t t t t t *t ( tC tC tC tC tttttttttttttttttttttttC WHICH USES THF. tttttttttttt ?HE O?Z) D INV(5 ~ 5...)) &PS' EPS~BND ( 4( I ~ JiK I ~ ) J=l AN) I K I (A( I ~ J ~ KI ~ J=l ~ N) tttttttttttitttttttttC *C ~ STEPSZt EBS ~ AND tC MATRICES *C ROwS ~ tr C tC 4 tlirt 4 4 4 t t it tt t 4 tt 4 it tt (' I C't t'4ot C& Ct Ct Ct Cttttt 2 5 JQ...

Hamff, Nancy Claire

1978-01-01T23:59:59.000Z

267

Physics 182 Equation Sheet for Exams Good Stuff from 181  

E-Print Network (OSTI)

QH = 1 - QC QH Carnot = 1 - TC TH Refrigerator: Win + QC = QH K = QC Win = QC QH -QC KCarnot = TC TH -TC 1 #12;· Chapter 25: Coulomb Law: |Fq1q2 | = K |q1||q2| r2 = 1 40 |q1||q2| r2 Charge in a Field: F = q E Field of a Point Charge q: E = K q r2 ^r = 1 40 q r2 ^r · Chapter 26: Dipole Moment: p = (qs

Alexander, Stephen G.

268

The transport coefficients in (R1.5Ce0.5)RuSr2Cu2O10-5 (R=Gd,Eu) rutheno-cuprates  

E-Print Network (OSTI)

Page Table 1. The onset of superconductivity and the values for first and second superconducting temperatures, Tc and Tcg superconducting temperatures for Ru-1222(Eu) with different oxygen content..............................................61... Table 2. The onset of superconductivity, the values for first and second superconducting temperatures, Tc and Tcg determined from resistivity data and the superconducting temperatures TcS determined from thermopower data for Ru-1222(Gd) with different...

Anatska, Maryna Petrovna

2007-04-25T23:59:59.000Z

269

Dynamic fluorescence imaging with molecular agents for cancer detection  

E-Print Network (OSTI)

emission computed tomography SUV standard uptake values SLN sentinel lymph node TK tyrosine kinase TBR target to background ratio Symbols ? pharmacokinetic parameter ? pharmacokinetic parameter )(tC BOUND concentration of dye... bound to integrin receptor either in the vascular or extravascular compartments )(tC LAREXTRAVASCU concentration of dye in extravascular space )(tC VASCULAR concentration of dye in vascular space 0 I background fluorescence intensity c k...

Kwon, Sun Kuk

2009-05-15T23:59:59.000Z

270

Prospects for baryon instability search with long-lived isotopes  

SciTech Connect

In this paper we consider the possibility of observation of baryon instability processes occurring inside nuclei by searching for the remnants of such processes that could have been accumulated in nature as mm long-lived isotopes. As an example, we discuss here the possible detection of traces of {sup 97}Tc, {sup 98}Tc, and {sup 99}Tc in deep-mined nonradioactive tin ores.

Efremenko, Yu. [Oak Ridge National Lab., TN (United States)][Tennessee Univ., Knoxville, TN (United States); Bugg, W.; Cohn, H. [Tennessee Univ., Knoxville, TN (United States); Kamyshkov, Yu. [Oak Ridge National Lab., TN (United States)][Tennessee Univ., Knoxville, TN (United States); Parker, G.; Plasil, F. [Oak Ridge National Lab., TN (United States)

1996-12-31T23:59:59.000Z

271

Diurnal and Seasonal Patterns of Water Potential, Photosynthesis, Evapotranspiration and Water Use Efficiency of Clusterbean  

Science Journals Connector (OSTI)

Diurnal patterns of leaf water potential (?W), canopy net photosynthetic rate (P N), evapotranspiration rate (E), canopy temperature (Tc), and water use efficiency (WUE) of clusterbean [Cyamopsis ...

A. Kumar; N.C. Turner; D.P. Singh; P. Singh; M. Barr

2000-01-01T23:59:59.000Z

272

Critical parameters of unrestricted primitive model electrolytes with charge asymmetries up to 10:1  

E-Print Network (OSTI)

in continuous space has yielded the values Tc* 0.0489 0.0003 and c* 0.076 0.003. Furthermore, the RPM has been

273

E-Print Network 3.0 - anisotropic exchange constants Sample Search...  

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

to expect anisotropic cor- relations in phase ordering. The two-dimensional 2D... Ising model below Tc , for example, is spatially anisotropic at ar- bitrarily large scales...

274

E-Print Network 3.0 - abragam model Sample Search Results  

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

Summary: and Ni compound can be described by a very anisotropic square planar S 1 Ising model. Magnetic ordering... by the short range correlations pbove Tc. A comparison...

275

Fabrication and Properties of Technetium-Bearing Pyrochlores and Perovskites as Potential Waste Forms - 13222  

SciTech Connect

Technetium-99 (t{sub 1/2}= 2.13x10{sup 5} years) is important from a nuclear waste perspective and is one of the most abundant, long-lived radioisotopes in used nuclear fuel (UNF). As such, it is targeted in UNF separation strategies such as UREX+, for isolation and encapsulation in solid waste forms for storage in a nuclear repository. We report here results regarding the incorporation of Tc-99 into ternary oxides of different structure types: pyrochlore (Nd{sub 2}Tc{sub 2}O{sub 7}), perovskite (SrTcO{sub 3}), and layered perovskite (Sr{sub 2}TcO{sub 4}). The goal was to determine synthesis conditions of these potential waste forms to immobilize Tc-99 as tetravalent technetium and to harvest crystallographic, thermophysical and hydrodynamic data. The objective of this research is to provide fundamental crystallographic and thermophysical data on advanced ceramic Tc-99 waste forms such as pyrochlore, perovskite, and layered perovskite in support of our current efforts on the corrosion of technetium-bearing waste forms. The ceramic Tc-99-bearing waste forms exhibit good crystallinity. The lattice parameters and crystal structures of the technetium host phases could be refined with high accuracies of ±3, ±4, and ±7 fm (10{sup -15} m), for Nd{sub 2}Tc{sub 2}O{sub 7}, SrTcO{sub 3}, and Sr{sub 2}TcO{sub 4}, respectively. The associated refinement residuals (R{sub Wp}) for the patterns are 4.1 %, 4.7 % and 6.7 %, and the refinement residuals for the individual phases (R{sub Bragg}) are 2.0 %, 2.4 % and 3.9 %, respectively. Thermophysical properties of the oxides SrTcO{sub 3}, Sr{sub 2}TcO{sub 4}, and Nd{sub 2}Tc{sub 2}O{sub 7} were analyzed using AC magnetic susceptibility measurements to further harvest information on the critical temperature (T{sub c}) for superconductivity. In our experiments the strontium technetates, SrTcO{sub 3} and Sr{sub 2}TcO{sub 4}, show superconductivity at rather high critical temperatures of T{sub c} = 7.8 K and 7 K, respectively. On the other hand Nd{sub 2}Tc{sub 2}O{sub 7} did not show any changes in magnetic properties above 3 K. (authors)

Hartmann, Thomas [University of Nevada - Las Vegas, Harry Reid Center, 4505 S. Maryland Parkway, Box 4009, Las Vegas, NV 89154-4009 (United States)] [University of Nevada - Las Vegas, Harry Reid Center, 4505 S. Maryland Parkway, Box 4009, Las Vegas, NV 89154-4009 (United States); Alaniz, Ariana J. [University of Nevada - Las Vegas, Howard R. Hughes College of Engineering, 4505 S. Maryland Parkway, Box 4009, Las Vegas, NV 89154-4009 (United States)] [University of Nevada - Las Vegas, Howard R. Hughes College of Engineering, 4505 S. Maryland Parkway, Box 4009, Las Vegas, NV 89154-4009 (United States); Antonio, Daniel J. [University of Nevada - Las Vegas, Department of Physics and Astronomy, 4505 S. Maryland Parkway, Box 4002, Las Vegas, NV 89154-4002 (United States)] [University of Nevada - Las Vegas, Department of Physics and Astronomy, 4505 S. Maryland Parkway, Box 4002, Las Vegas, NV 89154-4002 (United States)

2013-07-01T23:59:59.000Z

276

Webinar Summary Page 1  

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

Webinar Summary Page 1 TC&WM EIS Webinar December 10, 2012 FINAL MEETING SUMMARY HANFORD ADVISORY BOARD WEBINAR: FINAL TANK CLOSURE AND WASTE MANAGEMENT ENVIRONMENTAL IMPACT...

277

E-Print Network 3.0 - actinide transmutation reactor Sample Search...  

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

All these names are used... . The idea of combining powerful accelerators - with a subcritical reactor for transmutation purposes... homogeneous fuel Actinides MgO Tc Fast...

278

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

279

PowerPoint Presentation  

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

waste (HLW) tanks, ancillary structures, associated liquid waste sites, and soils contamination (cribs, trenches, graves, unplanned releases) * Cr, I-129, Tc-99, nitrate...

280

The aqueous corrosion behavior of technetium - Alloy and composite materials  

SciTech Connect

Metal waste forms are under study as possible disposal forms for technetium and other fission products. The alloying of Tc is desirable to reduce the melting point of the Tc-containing metal waste form and potentially improve its corrosion resistance. Technetium-nickel composites were made by mixing the two metal powders and pressing the mixture to make a pellet. The as-pressed composite materials were compared to sintered composites and alloys of identical composition in electrochemical corrosion tests. As-pressed samples were not robust enough for fine polishing and only a limited number of corrosion tests were performed. Alloys and composites with 10 wt% Tc appear to be more corrosion resistant at open circuit than the individual components based on linear polarization resistance and polarization data. The addition of 10 wt% Tc to Ni appears beneficial at open circuit, but detrimental upon anodic polarization. Qualitatively, the polarizations of 10 wt% Tc alloys and composites appear like crude addition of Tc plus Ni. The 1 wt% Tc alloys behave like pure Ni, but some effect of Tc is seen upon polarization. Cathodic polarization of Tc by Ni appears feasible based on open circuit potential measurements, however, zero resistance ammetry and solution measurements are necessary to confirm cathodic protection.

Jarvinen, G.; Kolman, D.; Taylor, C.; Goff, G.; Cisneros, M. [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Mausolf, E.; Poineau, F.; Koury, D.; Czerwinski, K. [Department of Chemistry, University of Nevada, Las Vegas, Las Vegas, NV 89154 (United States)

2013-07-01T23:59:59.000Z

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

SHuffle, a novel Escherichia coli protein expression strain capable of correctly folding disulfide bonded proteins in its cytoplasm  

E-Print Network (OSTI)

Schein CH: Optimizing protein folding to the native state inJ, Terwilliger TC: Rapid protein-folding assay using greenbuilding bridges in protein folding. Trends Biochem Sci

Lobstein, Julie; Emrich, Charlie A; Jeans, Chris; Faulkner, Melinda; Riggs, Paul; Berkmen, Mehmet

2012-01-01T23:59:59.000Z

282

E-Print Network 3.0 - atomic models Sample Search Results  

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

Modeling of Defects in Solids"www.tc.cornell.eduResearchMultiscale MOLECULAR... modeling and software infrastructure to support the representation and simulation of...

283

E-Print Network 3.0 - aplicada ao planejamento Sample Search...  

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

Yamamoto Pr... Aplicadas - SA Zaki Akel Sobrinho Setor de Tecnologia - TC Mauro Lacerda Santos Filho Setor de Cincias da... -Reitoria de Planejamento, Oramento e Finanas...

284

Tank Closure and Waste Management Environmental Impact Statement...  

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

V RECHARGE SENSITIVITY ANALYSIS In the Draft Tank Closure and Waste Management Environmental Impact Statement for the Hanford Site, Richland, Washington (Draft TC & WM EIS),...

285

Remedial System Performance Improvement for the 200-ZP-1_PW-1...  

Office of Environmental Management (EM)

of work. Recent increases of Tc-99 have been noted in monitoring wells near the TX tanks, northeast of the CT sources. The current interim groundwater extraction system...

286

Portsmouth Paducah Project Office  

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

Restoration Scrap Metal Inactive Facility Removal Legacy Waste Gas Centrifuge Plant-GCEP Tc-99 Cleaning Cold Shutdown D&D Planning and Future Vision Uranium Management Center...

287

E-Print Network 3.0 - al este del Sample Search Results  

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

TC, este Vicerrectorado comunica que ... Source: Escolano, Francisco - Departamento de Ciencia de la Computacin e Inteligencia Artificial, Universitat d'Alacant Collection:...

288

Characterization of natural titanomagnetites (Fe3-xTixO4) for...  

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

for studying heterogeneous electron transfer to Tc(VII) in the Hanford Abstract: Sediments with basaltic provenance, such as those at the Hanford nuclear reservation,...

289

MyPoly / Blackboard Posting Policy November 2008 Page 1 of 3  

E-Print Network (OSTI)

Westcott westcott@poly.edu> Sent: Friday, April 13, 2007 4:03 PM To: IS Help Desk CC, 2007 3:21 PM To: TC Westcott westcott

Aronov, Boris

290

Lymphoscintigraphic evaluation of the thoracic duct in the canine  

E-Print Network (OSTI)

, this led to the investigation 99m . 99m of several technetium ( ic)-radiocolloids as potential radiopharmaceuticals for LSG. A wide variety of radiopharmaceuticals have been used for LSG since 1946, 99m 99m 99m including Tc-ammonium sulfur colloid, Tc...-antimony sulfur colloid, Tc- 99m 99m 99m dextran, Tc-human serum albumin, i c-hydroxyethyl starch, i c-stann- 99m, 99m . 131 ous phytate, 't'c-sulfur colloid, ic-rhenium, I-fat, and 123 I-heptadecanoic acid. " ' The most commonly used radiopharmaceuticals...

Hodges, Carlos Cintron

1990-01-01T23:59:59.000Z

291

A T-Matrix Approach to Heavy Quark Interaction with Thermal Gluons in a Quark Gluon Plasma  

E-Print Network (OSTI)

: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 51 viii LIST OF FIGURES FIGURE Page 2.1 In-medium HQ free and internal energies determined using lattice data [12] in the triplet (solid lines), sextet (dotted lines), and 15-plet (dashed lines) channels at temperatures T = 1:2Tc (left) and 2Tc...) for charm-gluon at 1:2Tc (thick) and 2:0Tc (thin). Diagrams illustrate the s-wave (left) and p-wave (right) for charm-gluon in potential U for the triplet (top), sextet (2nd row), and 15-plet (3rd row) color channels. The bottom diagram corresponds...

Huggins, Kyle

2012-10-19T23:59:59.000Z

292

Pulmonary deposition and clearance measurements of aerosolized radiopharmaceuticals in the sedated dog  

E-Print Network (OSTI)

canine ventilation patterns. Deposition occurred as a zero order process. Tc-tKPA deposi- tion was faster than TcO in most lung regions. Percent deposi- 4 tion of both radiopharmaceuticals was less in the apices than in the base and mid regions... and cleared in the base and mid regions. Clearance curves were biexponen- tial for both radiopharmaceuticals. The intitial phase of clearance was much more rapid for Tc04 than for Tc-VZPA. Fifty percent retained activity was seldom reached for either...

Merton, Dawn Ann

1986-01-01T23:59:59.000Z

293

Final Meeting Summary Page 1  

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

EIS (TC & WM EIS), Q4 * Draft Land Conveyance Environmental Assessment, Q2 * Natural Gas Pipeline Environmental Impact Statement (EIS), Q3 * 2014 Budget meetings (2015 & 2016...

294

Collegiate Wind Competition 2016 Notice of Intent | Department...  

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

Participant passcode: 3869930 Web Access URL: https:www.mymeetings.comncjoin.php?iRW3109386&p3869930&tc Addthis Related Articles Collegiate Wind Competition Engages...

295

David L. Ederer  

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

complex and highly correlated materials such as high Tc superconductors. His research in atomic physics involved absorption studies in contained metal vapors in the soft x-ray...

296

Microsoft Word - ederer1999dec.doc  

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

complex and highly correlated materials such as high Tc superconductors. His research in atomic physics involved absorption studies in contained metal vapors in the soft x-ray...

297

Microsoft PowerPoint - Update on IEC Inverter Standards Activity...  

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

1, 2013 Update on IEC Inverter Standards Activity IEC Technical Committee (TC) 82 Solar photovoltaic energy systems IEC International Electrotechnical Commission, founded...

298

Spectroscopy of the layered high-temperature superconductors and their collective plasmon modes—a model for phonon- and plasmon-induced pairing  

Science Journals Connector (OSTI)

The recently discovered layered copper oxide high-Tc superconductors are discussed as models of a layered electron gas with highly anisotropic collective modes (layer plasmons). Our...

Kresin, V Z; Morawitz, H

1989-01-01T23:59:59.000Z

299

E-Print Network 3.0 - analysing myocardial 11cpalmitate Sample...  

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

ARTICLE 99m Tc-sestamibi kinetics predict myocardial viability in a perfused rat heart... . The purposes of this study were: (1) to determine the relationship between...

300

Hydrometeorological Report Revised Report  

E-Print Network (OSTI)

southwo.rd dis· pJ.o.oomont of both somiprlntmcnt centers of n.cticn during this period, tc:S;:..rthor 1

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

Field Monitoring Protocol: Heat Pump Water Heaters  

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

SHR Sensible heat ratio T&RH Temperature and relative humidity TC Thermocouple UA Heat loss coefficient v Table of Contents List of Figures ......

302

CoverSheet  

Office of Scientific and Technical Information (OSTI)

is unlimited. Title: Response of High-Tc Superconductor Metamaterials to High Intensity THz Radiation Author(s): Grady, Nathaniel Perkins Jr., Bradford G. Hwang, Harold...

303

Microsoft PowerPoint - GW4-07pres.ppt  

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

Tc-99 pump & treat system * Central Plateau Deep Vadose Zone Integrated Project Team (HRR Peer Review) * River Corridor and Groundwater Integrated Project Team - 100 D Area...

304

ASCEM WM 2013 Presentation  

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

Vadose Zone (DVZ) BC Cribs in Hanford Central Plateau Charged with evaluating innovative remediation technologies for recalcitrant Tc-99 in the deep vadose zone ...

305

Research Summary Carbon valuation, discounting and risk management  

E-Print Network (OSTI)

covered by the EU Emissions Trading Scheme (ETS) and £51/tCO2e (£183/tC) for non-ETS sectors, both rising

306

E-Print Network 3.0 - applied fluvial geomorphology Sample Search...  

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

boundary in a fluvial setting near the highstand shoreline... .O. Box 80115, NL-3508 TC Utrecht, Netherlands Freek S. Busschers* Netherlands Institute of Applied... shoreline in...

307

Slide 1  

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

(Reduction of Tc-99 is potentially reversible) Iodine-129 Nitrate Hexavalent Chromium Carbon Tetrachloride HNF-49889-VA Technology - In Situ Vitrification General Description *...

308

E-Print Network 3.0 - animal rights movement Sample Search Results  

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Information Sciences 17 In INTERACT '09: Proceedings of the 12th IFIP TC13 Conference in Human-Computer Interaction -LNCS 5727. Springer & IFIP, 372385, 2009. Summary: movement...

309

Final Meeting Summary ...  

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

5 Issue Manager Report-Out on Tank Closure and Waste Management Final Environmental Impact Statement (TC&WM FEIS) Groundwater and Vadose Zone Modeling (JOINT...

310

IAEA-Botswana Cooperation | Open Energy Information  

Open Energy Info (EERE)

Website http:www-tc.iaea.orgtcwebt Program Start 2009 Country Botswana Southern Africa References IAEA Project Database1 IAEA is working with Botswana on Supporting...

311

E-Print Network 3.0 - activated factor vii Sample Search Results  

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

of Tc(VII) reduced. The Fe(II) was largely ... Source: Roden, Eric E. - Department of Geology and Geophysics, University of Wisconsin at Madison Collection: Environmental...

312

Superconductivity: Past, present, and future  

SciTech Connect

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

313

Superconductivity: Past, present, and future  

SciTech Connect

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

314

Ising spin glasses in the effective-interaction-approximation L. Turban and P. Guilmin  

E-Print Network (OSTI)

L-145 Ising spin glasses in the effective-interaction-approximation L. Turban and P. Guilmin d'Ising (± 1) sont obtenues dans l'approximation de l'interaction effective. Pour le réseau carré and (± 1)-Ising spin glasses. For the square lattice we recover the exact results of Harris Tc(~)/Tc(0) = 1

Paris-Sud XI, Université de

315

Specific-heat discontinuity in impure two-band superconductors  

E-Print Network (OSTI)

at the critical temperature T-c decreases with increasing disorder, its ratio to the normal-state specific heat at T-c increases and slowly converges to the isotropic value. For strong disorder the deviation from the isotropic value is proportional to the elastic...

Mishonov, TM; Penev, ES; Indekeu, JO; Pokrovsky, Valery L.

2003-01-01T23:59:59.000Z

316

PERIODIC HEAT REPORT  

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

186.00 TripHigh tc Date MO:DAY 1.00: 16.00 TripHigh tc Time HR:MIN 10.00: 9.00 Ports Temp: Avg, High, Low 19.00, 21.00, 17.00 Coils Temp: Avg, High, Low 19.00, 21.00,...

317

Biomedical Application of Apatites  

Science Journals Connector (OSTI)

...Barralet JE, Best SM, Bonfield W (2000...161-173 Best SM, Sim B, Kayser...Bifano SL, Waldrop TC (1998) Hydroxylapatite...S, Boyd RD, Sun TC, Blaha JD, Lane...particles: Potential radiopharmaceuticals for radiation synovectomy...Planell JA, Best SM (1999) Precipitation...

Karlis A. Gross; Christopher C. Berndt

318

Synthesis and Evaluation of Bombesin Derivatives on the Basis of Pan-Bombesin Peptides Labeled with Indium-111, Lutetium-177, and Yttrium-90 for Targeting Bombesin Receptor-Expressing Tumors  

Science Journals Connector (OSTI)

...Peptides as Diagnostic Radiopharmaceuticals. Chem Rev, 1999;99:2235-68, 9 Okarvi SM. Recent developments...99mTc-labelled peptide-based radiopharmaceuticals: an overview. Nucl...vivo comparison with Sm-153 and Lu-177 labeled...Accumulation and retention of Tc-99m-RP527 by GRP...

Hanwen Zhang; Jianhua Chen; Christian Waldherr; Karin Hinni; Beatrice Waser; Jean Claude Reubi; and Helmut R. Maecke

2004-09-15T23:59:59.000Z

319

Heat Transfer Measurements for a Horizontal Micro-Tube Using Liquid Crystal Thermography  

E-Print Network (OSTI)

62 TC02-007 Heat Transfer Measurements for a Horizontal Micro-Tube Using Liquid Crystal-tube and 1000m micro-tube. In the single-phase heat transfer experiments, the fully-developed flow heat transfer were also measured using thermocouples (TC). The results showed that the heat transfer coefficient

Ghajar, Afshin J.

320

Surface boundary conditions for the Ginzburg-Landau theory of d-wave superconductors M. Alber, B. Bauml, R. Ernst, D. Kienle, A. Kopf, and M. Rouchal  

E-Print Network (OSTI)

, it is the only theory which is simple enough to handle very complex superconducting phenomena in the context of high-Tc materials lead to a one- component order parameter with the same bulk GL equa- tions the anoma- lous phase diagram near Tc .11 The GL boundary conditions at surfaces and interfaces are more

Schmidt, Matthias

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

DVS5.2 METERS 8 METERS OCR507, STOR-X DATA LOGGER  

E-Print Network (OSTI)

DVS5.2 METERS 10 METERS 8 METERS OCR507, STOR-X DATA LOGGER 16" BATTERY HOUSING TC INVERTED5 METERS 1" SAS INDUCTIVE CABLE BREAKOUT RADAR REFLECTOR OS PAPA RECOVERY HANDLE 1 METER-SBE 37 MICROCAT TC HUMIDITY (FLEX) CTD/GTD/O2 4 METERS WETLabs FLNTUSB FLUOROMETER DOUBLE NUT AND TORQUE ALL LOAD CELL NUTS

322

Charmonium in medium: From correlators to experiment  

E-Print Network (OSTI)

of T diss?c = 1.3(1.0)Tc in the strong(weak) binding scenarios. We assume that ?c1 and ?c2 have the same dissociation temperatures as the ?c0. For ? ? we simply assume its dissociation temperature to beTc for both the strong- and weak-binding scenarios...

Zhao, Xingbo; Rapp, Ralf.

2010-01-01T23:59:59.000Z

323

VIROLOGY 60, 883-898 (1972) Specialized Transduction of Tetracycline Resistance by Phage P22  

E-Print Network (OSTI)

Salmonella typhimurium LT.2 to letR with P22 phage grown on an LT-2 strain car- rying the R factor 222. The HFT lysate contains defective P22 particles, called P22 Tc-10, which cannot grow or lysogenize (i.e., transduce tetn) upon single infection. However, two defective P22 Tc-10 particles can cooperate with each

Botstein, David

324

The combined effects of beta-shear and environmental shear on a dry tropical cyclone in a numerical model  

E-Print Network (OSTI)

wind balance is analyzed in this study (Mallen et al. 2005). The vortex is generated from a number, FL 1. INTRODUCTION High values of vertical wind shear have been shown to inhibit tropical cyclone (TC have demonstrated that shear generates a tilt in TC core, resulting in persistent wavenumber-1

Nolan, David S.

325

Enhanced Superconducting Properties of Iron Chalcogenide Thin Films  

E-Print Network (OSTI)

Among the newly discovered iron-based superconductor, FeSe with the simplest structure and a transition temperature (T_c) around 8 K arouses much research interest. Although its Tc is much lower than that of the cuprates, iron chalcogenide has low...

Chen, Li

2013-07-26T23:59:59.000Z

326

Superconductivity in gallium-substituted Ba8Si46 clathrates  

E-Print Network (OSTI)

superconductor, with an onset at T-C approximate to 3.3 K. For x=10 and higher, no superconductivity was observed down to T=1.8 K. This represents a strong suppression of superconductivity with increasing Ga content, compared to Ba8Si46 with T-C approximate to 8...

Li, Yang; Zhang, Ruihong; Liu, Yang; Chen, Ning; Luo, Z. P.; Ma, Xingqiao; Cao, Guohui; Feng, Z. S.; Hu, Chia-Ren; Ross, Joseph H., Jr.

2007-01-01T23:59:59.000Z

327

Superconductivity in amorphous T5T9 transition-metal alloys (T5=Nb,Ta; T9=Rh,Ir)  

Science Journals Connector (OSTI)

The superconducting transition temperature Tc has been measured for amorphous T5T9 alloys (where T5=Nb or Ta , T9=Rb or Ir ) as a function of composition. Nb and Ta dominated the Tc behavior with Tc for Nb alloys ? 4.8-5.1 K and Tc for Ta alloys ? 3.1-3.3 K. Changing the average group number by varying the T5T9 ratio had little effect on Tc within the ? 10 at.% range of composition in which the amorphous alloys form. Tc decreased approximately linearly with x for (Nb1-xTax)55Rh45 and (Nb1-xTax)55Ir45. The electrical resistivity ?n and the upper critical field Bc2 were measured as functions of temperature. The Sommerfeld constant ? was calculated from ?n and dBc2dT|Tc using the Ginzburg-Landau-Abrikosov-Gor'kov theory. The Debye temperature ?D was calculated from measurements of Young's modulus. The above parameters allowed calculations to be made of N(EF), the density of electronic states at the Fermi level, and ?, the electron-phonon coupling constant. It was found that ? more accurately reflected the Tc behavior than did N(EF) and that both electronic and phonon contributions had to be considered in the determination of ?.

C. C. Koch; D. M. Kroeger; J. O. Scarbrough; B. C. Giessen

1980-12-01T23:59:59.000Z

328

Improvement of inverting Carrington longitude to corresponding central  

E-Print Network (OSTI)

from L1 to L2 can be calculated as follows: dt = (Tc2 Tc1)*srp (1) Here srp denotes the synodic rotation period. Roger's method simply sets srp= 27.2753 days, i.e., the Carrington rotation period

Zhao, Xuepu

329

STRIPPING OF PROCESS CONDENSATES FROM SOLID FUEL CONVERSION  

E-Print Network (OSTI)

ft 3 N a T°C C0 mm Hg va:eor :eressure PH S PNH Pco exp. . bConcentration Moles/Liter Va:eor :eressure Pco NH b b exp. ~Concentration 3N a T°C NH co va:eor :eressure mm.Hsr Pco PNH

Hill, Joel David

2013-01-01T23:59:59.000Z

330

J. PHYS. IV FRANCE 7 (1997) Colloque C2, SupplBment au Journal d e Physique III d'avril 1997  

E-Print Network (OSTI)

that significant reduction takes place in the presence of the cement additives blast furnace slag (BFS) and Na2SJ. PHYS. IV FRANCE 7 (1997) Colloque C2, SupplBment au Journal d e Physique III d'avril 1997 forms, where it is desirable to stabilizethe highly soluble form of Tc(VII),TcOg, by in situ reduction

Boyer, Edmond

331

American Institute of Aeronautics and Astronautics An Air-Levitated Testbed for Flux Pinning Interactions at  

E-Print Network (OSTI)

of Freedom HTSC = High-Temperature Superconductor TC = Critical Temperature I. Introduction LUX pinning happens only below a certain critical temperature TC, which is about 80 K for high-temperature is a well-known phenomenon that establishes a non-contacting connection between magnets and superconductors

Peck, Mason A.

332

Scaling of the superfluid density in high-temperature superconductors C. C. Homes,* S. V. Dordevic, T. Valla, and M. Strongin  

E-Print Network (OSTI)

Scaling of the superfluid density in high-temperature superconductors C. C. Homes,* S. V. Dordevic recently demon- strated that the scaling relation s dcTc may be applied to a large number of high-temperature A scaling relation Nc 4.4 dcTc has been observed in the copper-oxide superconductors, where Nc

Dordevic, Sasha V.

333

Impurity effects on electronmode coupling in high-temperature superconductors  

E-Print Network (OSTI)

LETTERS Impurity effects on electron­mode coupling in high-temperature superconductors K. TERASHIMA espite years of intensive research on copper oxide superconductors with high transition temperatures (Tc in the high-Tc superconductors. The interaction of electrons with bosonic excitations (phonons or spin

Loss, Daniel

334

INSTITUTE OF PHYSICS PUBLISHING SUPERCONDUCTOR SCIENCE AND TECHNOLOGY Supercond. Sci. Technol. 19 (2006) S403S406 doi:10.1088/0953-2048/19/5/S50  

E-Print Network (OSTI)

system with a photomixer and a high-Tc Josephson junction Iwao Kawayama1,2 , Tatsuya Miyadera1 , Hironaru-Tc Josephson junction. The frequency of the electromagnetic wave generated using the photomixing technique was monitored by a YBCO Josephson junction detector, and was obtained from the voltage interval of the Shapiro

Tonouchi, Masayoshi

335

JOURNAL DE PHYSIQUE IV ColloqueC6 SupplCment au Journalde Physique III, Volume 4,juin 1994  

E-Print Network (OSTI)

-Tc-based Josephson-junctions and SQUIDs by mechanically induced growth disorder M. Schmitt, A. Hadish, P. Wagner, Th of the deformation with quite interesting features, resulting in a Josephson junction. The substrate deformation-Tc-superconductors, there had to be developed new and sophisticated methods for the production of Josephson-junctions and SQUIDs

Boyer, Edmond

336

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

337

Formation of partial energy gap below the structural phase transition and the rare-earth element-substitution effect on infrared phonons in ReFeAsO (Re=La, Nd, and Sm)  

E-Print Network (OSTI)

Formation of partial energy gap below the structural phase transition and the rare-earth element phonon modes display systematic shifts toward high frequency upon rare-earth element Nd and Sm temperature Tc was raised beyond 50 K through the substitution of La by rare-earth elements. Tc is found

Wang, Wei Hua

338

JOURNAL DE PHYSIQUE Colloque C7, supplment au n12, Tome 43, dcembre 1982 page C7-91  

E-Print Network (OSTI)

-91 THE ASYMMETRY OF POLARIZED NEUTRON CRITICAL SCATTERING FROM Fe ABOVE Tc IN MAGNETIC FIELD A.I. Okorokov, A trois spins. Abstract. - An asymmetry in the critical scattering of polariz- ed neutrons from scattering of unpolarized neutrons in fer- romagnets above the Curie point Tc was shown both theoretically

Boyer, Edmond

339

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

E-Print Network (OSTI)

product that has entered surface and groundwaters as a result of atmospheric nuclear testing, and disposal; Bioremediation 1. Introduction Technetium (99 Tc) is a long-lived (t1=2 ¼ 2:13 � 105 years) nuclear fission of medical and defense nuclear waste. During spent nuclear fuel reprocessing, 99 Tc(IV)O2 is solubilized

Roden, Eric E.

340

An empirical study of a full-scale polymer thermochromic window and its implications on material science development objectives  

E-Print Network (OSTI)

Tgl (°C) Reference Tsol Tvis SHGC U-value (W/m -K) TC2 TC3at normal incidence; SHGC: solar heat gain coefficient. (TglDescription Tgl (°C) Tvis SHGC U-value (W/m -K) A ASHRAE

Lee, Eleanor S.

2014-01-01T23:59:59.000Z

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.


341

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

Science Journals Connector (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

342

Journal of Hazardous Materials 165 (2009) 148155 Contents lists available at ScienceDirect  

E-Print Network (OSTI)

in their frequent detection in soils, groundwater, and wastewater. The fate and transport of these compounds be a good candidate to remove TC from wastewater containing higher amounts of TC. © 2008 Elsevier B.V. All rights reserved. 1. Introduction A recent survey in 1999­2000 on 139 US streams revealed that among

Li, Zhaohui

343

Instructions for "The Great Energy Predictor Shootout II: Measuring Retrofit Energy Savings"  

E-Print Network (OSTI)

and compare how those models can be used to calculate energy conservation retrofit savings. ASHRAE's TC 1.5 and TC 4.7 have authorized a "Building Energy Predictor Shootout II: Measuring Retrofit Energy Savings" which is the focus of this competition....

Haberl, J. S.; Kreider, J. F.

1994-01-01T23:59:59.000Z

344

Accumulation of Memory Precursor CD8 T Cells in Regressing Tumors following Combination Therapy with Vaccine and Anti-PD-1 Antibody  

Science Journals Connector (OSTI)

...Microenvironment and Immunology Accumulation of Memory Precursor CD8 T Cells in Regressing Tumors...cancer vaccination triggers formation of memory T cells with an enhanced survival capacity...number of Tc1 and Tc2 CD8 T cells with memory precursor phenotype, CD27+IL-7RhiT-betlo...

Lavakumar Karyampudi; Purushottam Lamichhane; Adam D. Scheid; Kimberly R. Kalli; Barath Shreeder; James W. Krempski; Marshall D. Behrens; Keith L. Knutson

2014-06-01T23:59:59.000Z

345

Enhancing Jc(B,theta) in YBa2Cu3O7-delta via nano-engineering of pinning structures  

E-Print Network (OSTI)

the YBCO lattice resulting in unnecessary degradation of Tc and low field Jc. In this work, two types of strong pinning centers with negligible effect on the Tc and low field Jc were incorporated in YBCO films via strain engineering on the nanoscale...

Emergo, Rose Lyn S.

2009-04-29T23:59:59.000Z

346

A bifunctional adsorbent with high surface area and cation exchange property for synergistic removal of tetracycline and Cu2+  

Science Journals Connector (OSTI)

Abstract A novel bifunctional adsorbent with high surface area and cation exchange character (HAR-2) was prepared via copolymerization and hydrolysis reactions for the coremoval of tetracycline and Cu2+. HAR-2 possessed large specific surface area of 394 m2/g and high weak cation exchange capacity of 1.06 meq/g. The adsorption kinetics of TC or Cu2+ fitted both pseudo-first-order and pseudo-second order equations in single-substrate solution, whereas the adsorption kinetics were better described by pseudo-second order model in binary solutions. The adsorption of TC was an exothermic process, while the Cu2+ adsorption process was endothermic. The adsorption isotherms of TC and Cu2+ fitted the Langmuir model, suggesting a monolayer adsorption process. The adsorbed amount of TC was pronouncedly enhanced in the presence of Cu2+ due to the formation of tertiary surface complex HAR–Cu2+–TC. Likewise, the adsorption of Cu2+ was significantly improved by forming HAR–TC–Cu2+ complex in the presence of TC. The uptake of Cu2+ increased as pH increased, while the adsorbed amount of TC increased as pH rose from 2 to 3 but decreased when pH was further elevated from 3 to 6. The presence of NaCl exerted no significant influence on the adsorption of TC and negatively affected the adsorption of Cu2+. HAR-2 exhibited high stability over 5 repeated uses, only losing 6.3% and 18.4% of the initial adsorption capacity for TC and Cu2+, respectively.

Yan Ma; Qing Zhou; Sicong Zhou; Wei Wang; Jing Jin; Jiawen Xie; Aimin Li; Chendong Shuang

2014-01-01T23:59:59.000Z

347

Technitium Management at the Hanford Site  

SciTech Connect

Long Abstract. Full Text. The Hanford tank waste contains approx 26,000 Ci of technetium-99 (Tc-99), the majority of which is in the supernate fraction. Tc-99 is a long-lived radionuclide with a half-life of approx 212,000 years and, in its predominant pertechnetate (TcO{sub 4}) form, is highly soluble and very mobile in the vadose zone and ultimately the groundwater. Tc-99 is identified as the major dose contributor (in groundwater) by past Hanford site performance assessments and therefore considered a key radionuclide of concern at Hanford. The United States Department of Energy (DOE) River Protection Project's (RPP) long-term Tc-99 management strategy is to immobilize the Tc-99 in a waste form that will retain the Tc-99 for many thousands of years. To achieve this, the RPP flowsheet will immobilize the majority of the Tc-99 as a vitrified low-activity waste product that will be ultimately disposed on site in the Integrated Disposal Facility. The Tc-99 will be released gradually from the glass at very low rates such that the groundwater concentrations at any point in time would be substantially below regulatory limits.The liquid secondary waste will be immobilized in a low-temperature matrix (cast stone) and the solid secondary waste will be stabilized using grout. Although the Tc-99 that is immobilized in glass will meet the release rate for disposal in IDF, a proportion is driven into the secondary waste stream that will not be vitrified and therefore presents a disposal risk. If a portion of the Tc-99 were to be removed from the Hanford waste inventory and disposed off-site, (e.g., as HLW), it could lessen a major constraint on LAW waste form performance, i.e., the requirement to retain Tc-99 over thousands of years and have a positive impact on the IDF Performance Assessment. There are several technologies available at various stages of technical maturity that can be employed for Tc-99 removal. The choice of technology and the associated efficacy of the technology are dependent on the chemical fonn of the technetium in the waste, the removal location in the tlowsheet. and the ultimate disposition path chosen for the technetium product. This paper will discuss the current plans for the management of the technetium present in the Hanford tank waste. It will present the risks associated with processing technetium in the current treatment flowsheet and present potential mitigation opportunities, the status of available technetium removal technologies, the chemical speciation of technetium in the tank waste, and the available disposition paths and waste forms for technetium containing streams.

Robbins, Rebecca A.

2013-08-15T23:59:59.000Z

348

Binuclear complexes of technetium. Synthesis and characterization of binuclear technetium(V) and (VII) complexes with 3,6-bis(2 prime -pyridyl)-1,2,4,5-tetrazine  

SciTech Connect

Novel binuclear complexes of heptavalent and pentavalent technetium with the bridging ligand 3,6-bis(2{prime}-pyridyl)-1,2,4,5-tetrazine (bptz) have been prepared and characterized by analysis and optical and vibrational spectroscopy. The heptavalent complexes with the formulation ({mu}-bptz)(TcO{sub 3}X){sub 2} (X = Cl, OCH{sub 3}, OCH{sub 2}CH{sub 3}) were synthesized from pertechnetate and the ligand bptz{center dot}2HCl in the appropriate alcohol (X = OMe, OEt) or from pertechnetate and bptz in ethanolic aqueous HCl (for X = Cl). Binuclear complexes of technetium(V) with the formulation ({mu}-bptz)(TcOCl{sub 2}X){sub 2} (X = OEt, Cl) were prepared in ethanol from TcOCl{sub 4}{sup {minus}} and bptz in the absence (X = OEt) and presence (X = Cl) of ethanolic aqueous HCl. The mononuclear technetium(V) complex (TcO{sub 2}(bptz){sub 2})Cl has also been isolated under certain experimental conditions. Mononuclear complexes of the ligand 4-phenyl-3,6-bis(2{prime}-pyridyl)pyridazine (pppz) with formulae TcO{sub 3}(pppz)Cl and TcO(pppz)Cl{sub 3} were prepared from pertechnetate and TcOCl{sub 4}{sup {minus}}, respectively, with pppz in ethanolic aqueous hydrochloric acid solution.

Du Preez, J.G.H.; Gerber, T.I.A.; Gibson, M.L. (Univ. of Port Elizabeth (South Africa))

1990-01-01T23:59:59.000Z

349

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

350

Determination of the solubility of Np(IV), Pu(III) - (VI),Am(III) - (VI), and Te(IV), (V) hydroxo compounds in 0.5 - 14 M NaOH solutions  

SciTech Connect

The solubilities of Am(III), Np(IV), Pu(IV), Tc(IV), Np(V), Pu(V), Am(V), and Tc(V) hydroxo compounds were studied in 0.5 to 14 M NaOH solutions at 25{+-}2 {degrees}C. The effects of fluoride, phosphate, carbonate, oxalate, and some other organic complexing agents on the solubilities of Np(IV), Pu(IV), and TC(IV) hydroxides were investigated at 1.0 and 4.0 M NAOH. Some predictions were made on the dissolved (I.V) and (V) species present in alkali solutions.

Delegard, C.H.

1996-09-24T23:59:59.000Z

351

Studies on the product formed by the interaction of benzilic and formic acids  

E-Print Network (OSTI)

s ry' ", ~ay 19y5 AC F. 'OWL ED 0~' T The author wishes tc express his ~npreciet1cr tc Dr. Robert D ~ Thc, :zpson for his g xi1=nce . 0 cr1t1ct sos during this work. Appreciaticn is also exte~ded tc &r. DE P. Van Tuyl for his assistance cr the ir... the amount of liberated carbon dioxide gas. Almost all of the results reported for the Kovache reaction have been reductions of the triaryl-type of carbinols ~ In stud; . . . th . ;vache, reacti. n, ~ t ~ a. de- sired to learn whether or not the reduction...

Cox, Thomas Elvan

1955-01-01T23:59:59.000Z

352

The use of beta-tricalcium phosphate in surgically created subchondral bone defects in horses  

E-Print Network (OSTI)

. Butazolidin, Wellcome Animal Health, Kansas City, MO. 18 imaged at 4 weeks postoperative. Each horse was administered 100 mi i)i curie intravenously of Tc (as the methylene d1phosphonate 99m complex L Tc-MDP]) . Nuclear scans were obtained from the 99m n... Duncan test was performed to evaluate the s1gnificance of position (dorsopalmar, lateral). The Group I horses were compared at week 4 and week 13. Tc-Nethylene D1phosphonate, Mallinckrodt, St. Louis, NO. GE Portacamera, General Electric Co. , Medical...

Rose, Patricia Lee

1986-01-01T23:59:59.000Z

353

Determination of glomerular filtration rate by external counting methods  

E-Print Network (OSTI)

comparing the DTPA to other accepted methods; the results were very favorable for the use of ggmTC-DTPA. Klopper et al. , sa1d mTc-DTPA ". . . rapidly prepared by a kit method, is a useful addition to the list of radiopharmaceuticals that can be used... points. First, the external counting method is suitable as a true means of determining the glomerular filtration rate (GFR). Second, the method is applicable to cats. To do this, five dogs were injected with ggmTc(Sn)-DTPA. Plasma samples were drawn...

Sartor, Tammy Lee

1981-01-01T23:59:59.000Z

354

An evaluation of some parameters of renal glomerular and tubular function in normal cats  

E-Print Network (OSTI)

urinalysis study, GFR was determined by plasma disappear ance of SmTc(Sn)DTPA. The P mTc(Sn)DTPA was prepared by combining the eluent from a PPMo-SPTc generatorh with lyophilized stannous DTPA. A dose for injection snd a standard were drawn, and the activ... Tc(Sn)DTPA) clearance was made immediately following the second quantitative urinalysis and results were used to verify the value of 24-hour endogenous creatinine clearance as an estimate of glomerular filtration rate in the cat. DEDICATION...

Russo, Elizabeth Angela

1983-01-01T23:59:59.000Z

355

Calculation of the lesion radiation absorbed dose in canines treated with samarium-153 EDTMP  

E-Print Network (OSTI)

tissue was also low. The bone/muscle and bone/blood uptake ratios were higher with Sm-153 EDTMP than those observed with technetium-99m (Tc-99m) methylene diphosphonate (MDP). Retention of the Sm-153 in the skeleton was measured over a 3-day period... and blood and a high uptake in the skeleton 3 hours postinjection in rabbits. Results also show that Sm-153 EDTMP clears the blood more rapidly than Tc-99m MDP or Tc-99m pyrophosphate. No significant nonosseous accumulation of Sm-153 was observed...

Poston, John W

1989-01-01T23:59:59.000Z

356

Transition temperature and a spatial dependence of the superconducting gap for multilayer high-temperature superconductors  

Science Journals Connector (OSTI)

We derive the expressions for the transition temperature Tc, and the spatial dependence of the superconducting gap for a multilayer high-Tc superconductor composed of groups of tightly spaced planes separated by a larger distance. The results are compared with experiment and provide strong support for an interlayer hopping as the driving force of the large Tc enhancement in multilayered compounds. Our results are universal in the sense that they are valid for an arbitrary pairing potential Vkk? in the CuO2 planes, as well as for both Fermi- and non-Fermi-liquids.

Krzysztof Byczuk and Jozef Spa?ek

1996-01-01T23:59:59.000Z

357

Two aspects of the K500 cyclotron project  

E-Print Network (OSTI)

synchronous with the voltage at a radius of about 4 inches. This phase lag provides additional axial focusing since the particles will reach the accelerating gaps when the electric-field is decreasing There are fourteen trim coils (TCO ? TC13) in the K500... plane. This produces symmetry about the median plane and three-fold symmetry azimuthally. Trim coil TCO is located on the axis of cyclotron and is made of two individual circular coils, one above and one below the median plane. Foz TC2 through TC12...

Van Baalen, Aaron Chase

2012-06-07T23:59:59.000Z

358

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.

359

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

360

Technical liaison with the Institute of Physical Chemistry (Russian Academy of Science)  

SciTech Connect

The Institute of Physical Chemistry of the Russian Academy of Science (IPC/RAS) is engaged by the DOE to conduct studies of the fundamental and applied chemistry of the transuranium elements (TRU; primarily neptunium, plutonium, and americium; Np, Pu, Am) and technetium {Tc} in alkaline media. This work is being supported by the DOE because the radioactive wastes stored in underground tanks at DOE sites (Hanford, Savannah River, and Oak Ridge) contain TRU and {Tc}, are alkaline, and the chemistries of TRU and {Tc} are not well developed in this system. Previous studies at the IPC/RAS centered on the fundamental chemistry and on coprecipitation. Work continuing in FY 1996 will focus more on the applied chemistry of the TRU and {Tc} in alkaline media and continue effort on the coprecipitation task.

Delegard, C.H.

1995-12-01T23:59:59.000Z

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.


361

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

362

E-Print Network 3.0 - added mass matrix Sample Search Results  

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

of Motion and S Matrix Computation of Masses and S Matrix of Magnetic Critical Ising Model Conclusion Solving 2D Magnetic Ising Model at T Tc Summary: Intro Integrals of...

363

E-Print Network 3.0 - alpha-nucleus elastic scattering Sample...  

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

of Motion and S Matrix Computation of Masses and S Matrix of Magnetic Critical Ising Model Conclusion Solving 2D Magnetic Ising Model at T Tc Summary: Ising Model with h...

364

BIGHORN SHEEP: SUPPLEMENTAL ANALYSIS TO THE FOREST PLAN ENVIRONMENTAL...  

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

- Tied to secondary and supplemental waste treatment Updated 010513 Page 2 of 2 * TC & WM EIS Update (joint w RAP) - presentation on WMACPA, STOMP, Mod-flow, GW modeling (joint...

365

Specific and stable labeling of antibodies with technetium-99m with a diamide dithiolate chelating agent  

SciTech Connect

Technetium-99m labeling of antibodies has been suboptimal because of low affinity adventitious binding, nonspecific labeling, and loss of immunoreactivity. The diamide dithiolate ligand system (N{sub 2}S{sub 2}) forms highly stable, well-defined tetradentate complexes with Tc(V). Antibodies and their fragments have been labeled by conjugation of preformed {sup 99m}Tc-4,5-bis(thioacetamido)pentanoate active ester to protein amine groups to give a chemically known {sup 99m}Tc-N{sub 2}S{sub 2} complex covalently linked to antibody. Evaluations of the {sup 99m}Tc-N{sub 2}S{sub 2}-bound antibodies and their fragments have shown high stability and retained immunoreactivity.

Fritzberg, A.R.; Abrams, P.G.; Beaumier, P.L.; Kasina, S.; Morgan, A.C.; Rao, T.N.; Reno, J.M.; Sanderson, J.A.; Srinivasan, A.; Wilbur, D.S.; Vanderheyden, J.L. (NeoRx Corporation, Seattle, WA (USA))

1988-06-01T23:59:59.000Z

366

$ TfTiT7(TvJ/f^ Ris-M-2756 |g u w i i ^ i y / ntCtfCVW-D'""""  

E-Print Network (OSTI)

", G. Aeppli: "Muons, neutrons and superconductivity", N.F. Pedersen: "The Josephson junction", CVITY .... C. Aeppli THE JOSEPHSON JUNCTION N.F. Pedersen PHYSICOCHEMISTRY OF HIGH Tc SUPERCONDUCTORS C

367

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

368

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

369

Future Changes in the Western North Pacific Tropical Cyclone Activity Projected by a Multidecadal Simulation with a 16-km Global Atmospheric GCM  

Science Journals Connector (OSTI)

How tropical cyclone (TC) activity in the northwestern Pacific might change in a future climate is assessed using multidecadal Atmospheric Model Intercomparison Project (AMIP)-style and time-slice simulations with the ECMWF Integrated Forecast ...

Julia V. Manganello; Kevin I. Hodges; Brandt Dirmeyer; James L. Kinter III; Benjamin A. Cash; Lawrence Marx; Thomas Jung; Deepthi Achuthavarier; Jennifer M. Adams; Eric L. Altshuler; Bohua Huang; Emilia K. Jin; Peter Towers; Nils Wedi

2014-10-01T23:59:59.000Z

370

Improvements to a Tropical Cyclone Initialization Scheme and Impacts on Forecasts  

Science Journals Connector (OSTI)

This study makes improvements to the tropical cyclone (TC) initialization method introduced by Nguyen and Chen (i.e., the NC2011 scheme). The authors found that prescribing sea level pressure associated with the initial vortex using a modified ...

Hiep Van Nguyen; Yi-Leng Chen

2014-11-01T23:59:59.000Z

371

Shear viscosity to relaxation time ratio in SU(3) lattice gauge theory  

E-Print Network (OSTI)

We evaluate the ratio of the shear viscosity to the relaxation time of the shear flux above but near the critical temperature $T_c$ in SU(3) gauge theory on the lattice. The ratio is related to Kubo's canonical correlation of the energy-momentum tensor in Euclidean space with the relaxation time approximation and an appropriate regularization. Using this relation, the ratio is evaluated by direct measurements of the Euclidean observables on the lattice. We obtained the ratio with reasonable statistics for the range of temperature $1.3T_c \\lesssim T \\lesssim 4T_c$. We also found that the characteristic speed of the transverse plane wave in gluon media is almost constant, $v \\simeq 0.5$, for $T \\gtrsim 1.5T_c$, which is compatible with the causality in the second order dissipative hydrodynamics.

Yasuhiro Kohno; Masayuki Asakawa; Masakiyo Kitazawa

2011-12-07T23:59:59.000Z

372

On the Seasonal Forecasting of Regional Tropical Cyclone Activity  

Science Journals Connector (OSTI)

Tropical cyclones (TCs) are a hazard to life and property and a prominent element of the global climate system; therefore, understanding and predicting TC location, intensity, and frequency is of both societal and scientific significance. ...

G. A. Vecchi; T. Delworth; R. Gudgel; S. Kapnick; A. Rosati; A. T. Wittenberg; F. Zeng; W. Anderson; V. Balaji; K. Dixon; L. Jia; H.-S. Kim; L. Krishnamurthy; R. Msadek; W. F. Stern; S. D. Underwood; G. Villarini; X. Yang; S. Zhang

2014-11-01T23:59:59.000Z

373

Seasonal Tropical Cyclone Predictions Using Optimized Combinations of ENSO Regions: Application to the Coral Sea Basin  

Science Journals Connector (OSTI)

This study examines combining ENSO sea surface temperature (SST) regions for seasonal prediction of Coral Sea tropical cyclone (TC) frequency. The Coral Sea averages ~4 TCs per season, but is characterized by strong interannual variability, with 1–...

Hamish A. Ramsay; Michael B. Richman; Lance M. Leslie

2014-11-01T23:59:59.000Z

374

ASC eNews Quarterly Newsletter September 2012 | National Nuclear...  

National Nuclear Security Administration (NNSA)

of Condensed Matter - 2011, Pts 1 and 2. M. L. Elert, W. T. Buttler, J. P. Borg, J. L. Jordan and T. J. Vogler. Melville, Amer Inst Physics. 1426. Brandl, C., Germann, T.C. (2012)....

375

IM  

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

EH Tinker Creek 2 TC.2 E. folliculata; EF Donora Station 1 DS. 1 E. lugubris; EL Donora Station 2 DS.2 I E. complanata; EC Donora Station 3 DS.3 E. errans; EE Pen Branch 1 PB. 1...

376

Download  

Science Journals Connector (OSTI)

Np [e.g. NpO,(CO,),“-] is quite possible. Similarly,. Fisher (1982) reported that phytoplankton cells had very low con- centration factors (~20) for Tc, which ex-.

2000-02-08T23:59:59.000Z

377

Preliminary assessment of potential CDM early start projects in Brazil  

E-Print Network (OSTI)

9 X. Small Hydro in the State ofIRR WITH CREDITS AT $20/tC SMALL HYDRO IN GOIAS WIND FARMSeffect on the IRR. For the small hydro project, for example,

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

2000-01-01T23:59:59.000Z

378

Effects of pre-feedlot growth rate on carcass composition and meat tenderness  

E-Print Network (OSTI)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 6 Simple correlation coefficients among sarcomere length (SARC), calpastatin activity (CA), total collagen (TC), soluble collagen (SC), Warner-Bratzler Shear force (WBS), marbling, pasture ADG (PAST), feedlot ADG (FDLT), juiciness (JUIC...

Brigman, Ivan Todd

2001-01-01T23:59:59.000Z

379

Tank Closure and Waste Management Environmental Impact Statement...  

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

three key areas: 1. Retrieval, treatment, and disposal of waste from 149 single-shell tanks (SSTs) and 28 double-shell tanks (DSTs) and closure of the SST system. In this TC & WM...

380

Non-Pertechnetate Technetium Sensor Research and Development...  

Office of Scientific and Technical Information (OSTI)

in the understanding and modeling of the fate and speciation of 99Tc in Hanford waste tanks, glass, and low-temperature waste forms. A significant (2% to 25%) fraction of the...

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

Emissions  

Office of Scientific and Technical Information (OSTI)

the extra emissions that are generated from manufacturing the material used to make CNG tanks); they can amount tc more than 2% of the emissions from 32 the fuel production and...

382

AUM14  

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

e tc Storage for excess tape Chamber m odifications * Control s ystem: Motor c ontroller PLC DDAQ + e lectronics Tape-storage unit Toothed sprocket Smooth roller Tension feedback...

383

E-Print Network 3.0 - adjustable microchip ring Sample Search...  

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

DS21483B-page 1 TC940094019402 Summary: : 33-1-69-53-63-20 Fax: 33-1-69-30-90-79 Germany Microchip Technology GmbH Gustav-Heinemann Ring 125 D... 2002 Microchip Technology...

384

Development of North Atlantic Tropical Disturbances Near Upper-Level Potential Vorticity Streamers  

Science Journals Connector (OSTI)

Tropical cyclone (TC) development near upper-level potential vorticity (PV) streamers in the North Atlantic is studied from synoptic climatology, composite, and case study perspectives. Midlatitude anticyclonic wave breaking is instrumental in ...

Thomas J. Galarneau; Jr.; Ron McTaggart-Cowan; Lance F. Bosart; Christopher A. Davis

385

Improved Tropical Cyclone Flight-Level Wind Estimates Using Routine Infrared Satellite Reconnaissance  

Science Journals Connector (OSTI)

A new and improved method to estimate the tropical cyclone flight-level winds using globally and routinely available tropical cyclone (TC) information and infrared (IR) satellite imagery is presented. The developmental data set is comprised of ...

John A. Knaff; Scott P. Longmore; Robert T. DeMaria; Debra A. Molenar

386

Domestic Artifacts, Political Practices: An Archaeology of Women's Reform Efforts and the Home, 1854-1939  

E-Print Network (OSTI)

farther back was an ice house and cooling room about thirtyhave been the ice house and cooling room mentioned by ThomasTC Gage 1924). The ice house/cooling room was gone by 1885,

Christensen, Kimberly E.

2012-01-01T23:59:59.000Z

387

SEATTLE, WA ctober 1974  

E-Print Network (OSTI)

nektol n t"c C08 ul \\.\\ t,,.. !" \\ tIn4 UVt'r I I d (l E riltal Inl \\\\ashmptcn, sprl .. lnti ill )f If

388

E-Print Network 3.0 - acute suprasystolic occlusion Sample Search...  

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

for Assessing Myocardial Injury in Rat Heart Summary: - rations of left coronary artery (LCA) occlusion with reperfu- sion using a high-resolution SPECT system... Tc-GLA. The...

389

E-Print Network 3.0 - acute intercostal artery Sample Search...  

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

for Assessing Myocardial Injury in Rat Heart Summary: - rations of left coronary artery (LCA) occlusion with reperfu- sion using a high-resolution SPECT system... Tc-GLA. The...

390

--No Title--  

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

which is upgrading the crane in the transfer bay in L-area Removing Lead Base Paint & Primer from Crane Trolley Plate Savannah River Site Aiken South Carolina TC-A-2011-0092,...

391

batteries | EMSL  

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

potentials (ORP) and Tc dissolution 7 kinetics. M&1255;ssbauer spectra and micro X-ray diffraction of SFe 0.112 suggested the 8 persistence of FeS after 24-h...

392

E-Print Network 3.0 - asian-pacific conference tokyo Sample Search...  

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

Engineering 16 T C S P O T L I G H T Robot Learning Summary: University, Palo Alto, CA). The TC is supported by its AsianPacific representatives Masamichi Shimosaka......

393

Effect of electron irradiation on superconductivity in single crystals of Ba(Fe1-xRux)2As2 (x=0.24)  

SciTech Connect

A single crystal of isovalently substituted Ba(Fe1?xRux)2As2 (x=0.24) is sequentially irradiated with 2.5 MeV electrons up to a maximum dose of 2.1×1019 e?/cm2. The electrical resistivity is measured in situ at T=22??K during the irradiation and ex situ as a function of temperature between subsequent irradiation runs. Upon irradiation, the superconducting transition temperature Tc decreases and the residual resistivity ?0 increases. We find that electron irradiation leads to the fastest suppression of Tc compared to other types of artificially introduced disorder, probably due to the strong short-range potential of the pointlike irradiation defects. A more detailed analysis within a multiband scenario with variable scattering potential strength shows that the observed Tc versus ?0 is fully compatible with s± pairing, in contrast to earlier claims that this model leads to a too rapid suppression of Tc with scattering.

Prozorov, Ruslan [Ames Laboratory; Konczykowski, M [Laboratoire des Solides Irradies; Tanatar, Makariy A. [Ames Laboratory; Thaler, Alexander [Ames Laboratory; Budko, Serguei L [Ames Laboratory; Canfield, Paul C [Ames Laboratory; Mishra, V [Argonne National Laboratory; Hirschfeld, P J [University of Florida

2014-11-01T23:59:59.000Z

394

Executing declarative languages on a fine-grain parallel machine  

E-Print Network (OSTI)

O'Donnell,J.T. Declarative Systems: Proc. IFIP TC10/WG10.1 Workshop on Concepts and Characteristics of Declarative Systems pp 149-163 North-Holland

O'Donnell, J.T.

395

Research Highlight  

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

Working Group(s): Aerosol Life Cycle Journal Reference: Moffet RC, TC Rdel, ST Kelly, XY Yu, GT Carroll, J Fast, RA Zaveri, A Laskin, and MK Gilles. 2013....

396

Effects of Monsoon Trough Intraseasonal Oscillation on Tropical Cyclogenesis over the Western North Pacific  

Science Journals Connector (OSTI)

The effects of intraseasonal oscillation (ISO) of the western North Pacific (WNP) monsoon trough on tropical cyclone (TC) formation were investigated using the Advanced Research Weather Research and Forecasting (ARW) Model. A weak vortex was ...

Xi Cao; Tim Li; Melinda Peng; Wen Chen; Guanghua Chen

2014-12-01T23:59:59.000Z

397

Sensitivity of Tropical Cyclone Feedback on the Intensity of Western Pacific Subtropical High to Microphysics Scheme  

Science Journals Connector (OSTI)

The Advanced Weather Research Forecast (WRF) model is used to examine the sensitivity of simulated tropical cyclone (TC) track and associated intensity of western Pacific subtropical high (WPSH) to microphysical parameterization (MP) scheme. It is ...

Yuan Sun; Zhong Zhong; Wei Lu

398

Network Management with Consistently Managed Objects by Wu & Kaiser 17 [3] A. Borning, R. Duisberg, B. FreemanBenson, A. Kramer and M. Woolf. Constraint  

E-Print Network (OSTI)

Meandzija and Jil Westcott (editors), IFIP TC 6/WG 6.6 Symposium on Integrated Network Management, 235] J. Tucker. A Common Approach to Managed Objects. In Branislav Meandzija and Jil Westcott (editors

399

Analytical Chemistry Laboratory progress report for FY 1992  

SciTech Connect

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

400

Tea and its components as powerful antioxidants  

Science Journals Connector (OSTI)

The administration of tea polyphenol (TPP) diet containing 1.0% TPP to rats for 18 months significantly suppressed the increase of TBARS level in the plasma. The levels of total cholesterol (TC) and phospholip...

I. Tomita; M. Sano; J. Watanabe; S. Miura; T. Tomita…

1995-01-01T23:59:59.000Z

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.


401

Experiences on Co-firing Solid Recovered Fuels in the Coal Power Sector  

Science Journals Connector (OSTI)

Solid Recovered Fuels (SRF) are solid fuels prepared from high calorific fractions of non- ... plants and industrial furnaces (CEN/TC 343, Solid Recovered Fuels, 2003). In other frameworks, these types of fuels a...

Jörg Maier; Alexander Gerhardt; Gregory Dunnu

2011-01-01T23:59:59.000Z

402

Thermal Utilization of Solid Recovered Fuels in Pulverized Coal Power Plants and Industrial Furnaces as Part of an Integrated Waste Management Concept  

Science Journals Connector (OSTI)

Solid Recovered Fuels (SRF) are highly heterogeneous mixtures generated...CEN/TC 343 2003...). They are composed of a variety of materials of which some although recyclable in theory, may have become in forms tha...

G. Dunnu; J. Maier; A. Gerhardt

2009-01-01T23:59:59.000Z

403

On the role of interface imperfections in thermoelectric nondestructive materials characterization  

E-Print Network (OSTI)

On the role of interface imperfections in thermoelectric nondestructive materials characterization of thermoelectric nondestructive materials characterization technique. It is shown that contact heating between used in nonde- structive materials characterization. The thermoelectric volt- age is given by VSR Tc Ti

Nagy, Peter B.

404

Updated: 14/01/2013 Name Unit Position Phone Email Office Location  

E-Print Network (OSTI)

Peltier, Catherine EHS EHS Coordinator 778.782.7264 cpeltier@sfu.ca Discovery 2 Room 265 Poulin, Jim Campus Security Security Supervisor 778.782.3922 jim_poulin@sfu.ca TC 050 Ray, Meghan Campus Security

405

,"Plant","Primary Energy Source","Operating Company","Net Summer...  

U.S. Energy Information Administration (EIA) Indexed Site

Source","Operating Company","Net Summer Capacity (MW)" 1,"Robert Moses Niagara","Hydroelectric","New York Power Authority",2353.2 2,"Ravenswood","Natural Gas","TC Ravenswood...

406

Technetium production: a feasibility study for Texas A&M University nuclear science center  

E-Print Network (OSTI)

The affordability and feasibility of the production of the metastable nuclide of technetium (Tc-99m) by neutron capture activation of molybdenum trioxide (with a subsequent solvent extraction) has been explored for the Texas A&M University, Nuclear...

Hearne, David Douglass

1997-01-01T23:59:59.000Z

407

HBCU College Festival sponsored by Alfred Street Baptist Church  

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

Location: T.C. Williams High School, 3330 King St, Alexandria, VA 22302Attendees: Rauland Sharp (HC) and Dameone Ferguson (NNSA)POC: Chester Scott Website: http://bit.ly/1BARRqp

408

Implementation of genomics and bioinformatics approaches for identification and characterization of tomato ripening-related genes  

E-Print Network (OSTI)

.?????????. 138 28 Sample TED expression ratio search form and result???? 139 29 Data mining tools in TED.??????????????. 140 30 TED TC mining query form and its results. ???????. 142 xi LIST OF TABLES TABLE...

Fei, Zhangjun

2004-09-30T23:59:59.000Z

409

Sensitivity of Typhoon Forecasts to Different Subsets of Targeted Dropsonde Observations  

Science Journals Connector (OSTI)

For the first time, joint tropical cyclone (TC) surveillance missions by several aircraft were conducted in the western North Pacific basin within the framework of The Observing System Research and Predictability Experiment (THORPEX) Pacific ...

Florian Harnisch; Martin Weissmann

2010-07-01T23:59:59.000Z

410

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

Science Journals Connector (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

411

Melt-processed YBCO for a Fault Current Limiter  

Science Journals Connector (OSTI)

Bulk High-Tc...-Superconductors (HTSC) offer applications in the field of fault current limiters in power networks: Current limitation can be accomplished by means of ... with a primary winding carrying the power...

H. Kanbach; E. Bochenek; M. Trautmann; R. Fischer…

1994-01-01T23:59:59.000Z

412

Processus psycho-cognitif de compréhension dans l'interprétation de conférence (consécutive et simultanée) et dans la traduction : cas du français et du persan.  

E-Print Network (OSTI)

??La traduction n’est pas une pratique linéaire qui part d’un texte-source (Ts) pour arriver à un texte-cible (Tc). La traduction est un exercice de compréhension… (more)

Farnoud, Esmaeel

2014-01-01T23:59:59.000Z

413

Single-Crystalline Branched Zinc Phosphide Nanostructures: Synthesis,  

E-Print Network (OSTI)

optoelectronic devices, including solar cells, flat panel displays, and light emitting diodes (LEDs). Most of the optoelectronic devices having a TC are fabricated on indium tin oxide (ITO) coated substrates because

Wang, Zhong L.

414

2016 U.S. Department of Energy Collegiate Wind Competition Information...  

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

this webinar is by calling in. Audio Access Toll-free : 888-461-9425 Participant passcode: 3869930 Web Access URL: https:www.mymeetings.comncjoin.php?iRW3109386&p3869930&tc...

415

WINDExchange Webinar: Wind Turbine Recycling and Repowering ...  

Office of Environmental Management (EM)

Participant passcode: 5772976 Web Access URL: https:www.mymeetings.comncjoin.php?iRW9282094&p5772976&tc If you have trouble with the above link, try going to this...

416

WINDExchange Webinar: National Development Siting Considerations...  

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

Participant passcode: 5772976 Web Access URL: https:www.mymeetings.comncjoin.php?iRW9282094&p5772976&tc If you have trouble with the above link, try going to this...

417

WINDExchange Webinar: Wind Energy and Eagles: The Problem, the...  

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

Participant passcode: 3869930 Web Access URL: https:www.mymeetings.comncjoin.php?iRW3109386&p3869930&tc If you have trouble with the above link, try going to this...

418

Simulation of tropical-cyclone-like vortices in shallow-water ICON-hex using goal-oriented r-adaptivity  

Science Journals Connector (OSTI)

We demonstrate how efficient r-adapted grids for the prediction of tropical cyclone (TC) tracks can be constructed with the help of goal-oriented error estimates. The binary interaction of TCs in a barotropic mod...

Werner Bauer; Martin Baumann…

2014-02-01T23:59:59.000Z

419

Testing the Performance of Tropical Cyclone Genesis Indices in Future Climates Using the HiRAM Model  

Science Journals Connector (OSTI)

Tropical cyclone genesis indices (TCGIs) are functions of the large-scale environment that are designed to be proxies for the probability of tropical cyclone (TC) genesis. While the performance of TCGIs in the current climate can be assessed by ...

Suzana J. Camargo; Michael K. Tippett; Adam H. Sobel; Gabriel A. Vecchi; Ming Zhao

2014-12-01T23:59:59.000Z

420

Über Das ISO Norm-Projekt zur Verteilten Transaktionsverarbeitung: Stand und Technische Alternativen  

Science Journals Connector (OSTI)

Gegen Ende 1986 wurde bei der International Standardization Organization (ISO) in der Arbeitsgruppe TC97/SC21/WG5 ein ... und für das im folgenden das Kürzel “ISO-TP” benutzt wird.

M. W. Austen; J. M. Janas; H. R. Wiehle

1989-01-01T23:59:59.000Z

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.


421

Dynamic polarisation reveals differential steady-state stabilisation and capacitive-like behaviour in microbial fuel cells  

Science Journals Connector (OSTI)

Abstract In this paper we present several preliminary results produced with a purposely-designed external-resistor (Rext) sweeping tool for microbial fuel cells (MFCs). Fast sampling rates show that \\{MFCs\\} exhibit differential steady-state stabilisation behaviours depending on Rext, with consequences for time constant (tc) selection. At high Rext (35 k?), it is demonstrated that a tc ? 10 min avoids underestimation not overestimation, whilst at low Rext (100 ?) 5 min are sufficient, suggesting that sweeps with variable tc are possible. However, within the maximum power transfer range (2.5 k?), steady-states are only observed at 20 min tc but with a smaller confidence interval, questioning whether the polarisation technique is suitable to estimate maximum power transfer. Finally, a strategy towards the exploitation of a capacitive-like behaviour in \\{MFCs\\} is proposed, tapping into ?10 min periods with up to 50% higher current and energy transfer that could prove important for MFC-powered applications.

Pablo Ledezma; Nicolas Degrenne; Pascal Bevilacqua; François Buret; Bruno Allard; John Greenman; Ioannis Ieropoulos

2014-01-01T23:59:59.000Z

422

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

423

The algebraic spin liquid of a possible model description for the normal state of underdoped high temperature superconductors  

E-Print Network (OSTI)

16 years and counting ... In 1986 Bednorz and Muller discovered the layered perovskite structure (La - Ba)2Cu04 which showed the phenomenon of superconductivity at the unprecedented high temperature of Tc = 33 K. In the ...

Rantner, Walter, 1973-

2002-01-01T23:59:59.000Z

424

E-Print Network 3.0 - actes du symposium Sample Search Results  

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

d... ) Dominique Juh-Beaulaton ADDRA T.C., FAHEM A.K., DE JONG T. & MANK T., 1984, Atlas du dveloppement Rgional... du Togo, 207 p. ADJANOHOUN E., 1998, La notion de...

425

CX-008617: Categorical Exclusion Determination | Department of...  

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

work is to convert the existing 735-13A storage facility into a shop for use by Nevada Test Site Engineering. It will reuse equipment installed per E-MT-A-00008 & TC-A-2012-0034...

426

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

427

Diagnosing Forecast Errors in Tropical Cyclone Motion  

Science Journals Connector (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

428

Assimilation of T-TREC-Retrieved Winds from Single-Doppler Radar with an Ensemble Kalman Filter for the Forecast of Typhoon Jangmi (2008)  

Science Journals Connector (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

2014-05-01T23:59:59.000Z

429

Global Identification of Previously Undetected Pre-Satellite-Era Tropical Cyclone Candidates in NOAA/CIRES Twentieth-Century Reanalysis Data  

Science Journals Connector (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

430

An Evaluation of Tropical Cyclone Genesis Forecasts from Global Numerical Models  

Science Journals Connector (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

431

Fate of Radionuclides in Wastewater Treatment Plants  

E-Print Network (OSTI)

Comments on the Presence of Chernobyl Derived Cs and Tc inRadiological Impact of the Chernobyl Debris Compared with42 5.3- CHERNOBYL…………………………………………………………… 43 v   5.4-

Shabani Samgh Abadi, Farzaneh

2013-01-01T23:59:59.000Z

432

arXiv:cond-mat/010139425Jan2001 Comment on "Critical spin dynamics of the 2D quantum Heisenberg  

E-Print Network (OSTI)

the crossover into the RC regime. The scaling arguments of [3] predict that R(T) obeys R(T) = A T/(c2u(T)), (2

433

Highlights of Industrial Energy Audits with Application in Paper Product Manufacturing  

E-Print Network (OSTI)

COMPANY BOILER DATA TAKEN BY DATE TEST 1 TEST 2 TEST 3 FIRING RATE FUEL PRESSURE WI NDBOX PRESSURE GAS METER START TIME START GAS METER END TIME END STACK TEMP (oF) :tC0 2 (SAMPLE 1) :tC0 2 (SAMPLE 2) :t0 2 (SAMPLE 1) :t0 2 (SAMPLE 2) :tCO... COMPANY BOILER DATA TAKEN BY DATE TEST 1 TEST 2 TEST 3 FIRING RATE FUEL PRESSURE WI NDBOX PRESSURE GAS METER START TIME START GAS METER END TIME END STACK TEMP (oF) :tC0 2 (SAMPLE 1) :tC0 2 (SAMPLE 2) :t0 2 (SAMPLE 1) :t0 2 (SAMPLE 2) :tCO...

Hart, M. N.; Bond, S. K.

1979-01-01T23:59:59.000Z

434

Influence of genetic variability on specialty potato functional components and their effect on prostate cancer cell lines  

E-Print Network (OSTI)

The influence of genotype (selection), location, and year on antioxidant activity (AOA), total phenolics (TP), total carotenoids (TC), phenolic and carotenoid composition was studied using specialty (colored) potatoes (Solanum tuberosum L.) from...

Reddivari, Lavanya

2009-05-15T23:59:59.000Z

435

Response of tropical sea surface temperature, precipitation, and tropical cyclone-related variables to changes in global and local forcing  

E-Print Network (OSTI)

A single-column model is used to estimate the equilibrium response of sea surface temperature (SST), precipitation, and several variables related to tropical cyclone (TC) activity to changes in both local and global forcing. ...

Sobel, Adam

436

Microsoft Word - PC-000529_0_HFRB1FinalSummaryRpt_FinalDraft...  

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

QC quality control RB release rate-to-birth rate ratio RN radionuclide SPN self-powered neutron detector TC thermocouple TRISO TRi-ISOtropic coated-fuel particle design with...

437

Strategies and Challenges for Energy Efficient Retrofitting: Study of the Empire State Building  

Science Journals Connector (OSTI)

The double glazed windows of SHGC 0.61 retrofitted on site as super- ... and South windows is SC 75 type (SHGC 0.27) and in the North windows, TC 88 film (SHGC 0.36) used.

B. De; M. Mukherjee

2013-11-01T23:59:59.000Z

438

Memorandum of Understanding among the United States Department...  

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

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...

439

Microsoft Word - Settlement Agreement - FINAL - 01-06-061.doc...  

Energy Savers (EERE)

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...

440

The Fix Issue 1  

E-Print Network (OSTI)

'd argued about it the night before. "suu gua./tcU.ng me?" Hu-tch ha.d become 6MCMUC. "Not g(la./tcU.ng - J.>upettv-i.?-i.ng." Starsky had prevailed; and when the nightmares had wakened Hutch, he'd been there to banish them. And Forest had a lot...'d argued about it the night before. "suu gua./tcU.ng me?" Hu-tch ha.d become 6MCMUC. "Not g(la./tcU.ng - J.>upettv-i.?-i.ng." Starsky had prevailed; and when the nightmares had wakened Hutch, he'd been there to banish them. And Forest had a lot...

Multiple Contributors

1987-01-01T23:59:59.000Z

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

Finite Propagation Speeds in Spatially Extended Systems  

E-Print Network (OSTI)

. Normal and anoma- lous diffusive activity [MK00, KS05] is known to spread infinitely fast over space ultra-fast activity pulse propagation in solids and plasma [LW98, TC98, ML92]. To describe these effects

Hutt, Axel

442

HANFORD ADVISORY BOARD  

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

of Oregon), will serve as vice chair. Pam said RAP has been heavily involved in the review of the TC&WM EIS and working with the Committee Of The Whole (COTW). At the March 9...

443

I  

Office of Legacy Management (LM)

draft is base& upori data collected to Zate and fs sumi tted tc "you so that your review an+ comment can be received fn a tfmely mdnwr. The second enclosure lfsts the...

444

E-Print Network 3.0 - adenocarcinoma mcf-7 cells Sample Search...  

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

of 99m Tc- labeled monocationic agents. 2. Materials and methods 2.1. Tumor cell lines MCF7S cell... - tained from American Type Culture Collection (ATCC HTB-22,...

445

Microsoft Word - FINAL_PIC_Dec2008_summary.doc  

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

Permit scope and relationship to the TC&WM EIS Gerry said another key question is the scoping of the permit. He said some people think the document is not scoped as it should be,...

446

E-Print Network 3.0 - alanine transaminase Sample Search Results  

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

above. The same method was used for 8 12;modeling transaminase C... (TC), a reversible Ping Pong Bi Bi mechanism enzyme that uses alanine as the amino donor Source: Mjolsness,...

447

Prediction of rocks thermal conductivity from elastic wave velocities, mineralogy and microstructure  

Science Journals Connector (OSTI)

......exploitation of geothermal energy rely on the proper...predict TC in a cost-effective way...geometry of the cost-function and...crustal rocks and geothermal applications...Clauser C. Geothermal energy. Landolt Bornstein......

Lucas Pimienta; Joel Sarout; Lionel Esteban; Claudio Delle Piane

2014-01-01T23:59:59.000Z

448

Temperature, thermal-conductivity, and heat-flux data,Raft River...  

Open Energy Info (EERE)

conductivity; United States; USGS Authors Urban, T.C.; Diment, W.H.; Nathenson, M.; Smith, E.P.; Ziagos, J.P.; Shaeffer and M.H. Published Open-File Report - U. S. Geological...

449

E-Print Network 3.0 - automatic text classification Sample Search...  

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

Page: << < 1 2 3 4 5 > >> 1 Text classification Naive Bayes NB theory Evaluation of TC Web Search and Text Mining Summary: Text classification Naive Bayes NB theory Evaluation of...

450

North Atlantic Tropical Cyclones and U.S. Flooding  

Science Journals Connector (OSTI)

Riverine flooding associated with North Atlantic tropical cyclones (TCs) is responsible for large societal and economic impacts. The effects of TC flooding are not limited to the coastal regions, but affect large areas away from the coast, and often away ...

Gabriele Villarini; Radoslaw Goska; James A. Smith; Gabriel A. Vecchi

2014-09-01T23:59:59.000Z

451

Analysis of Automotive Turbocharger Nonlinear Response Including Bifurcations  

E-Print Network (OSTI)

automotive TCs operate with variable rotational speed, predictions are conducted with shaft acceleration/deceleration. Over most of its operating speed range, TC rotor nonlinear response predictions display two subsynchronous whirl frequencies w1 and w 2...

Vistamehr, Arian

2010-10-12T23:59:59.000Z

452

Technetium Activities at Mass 97  

Science Journals Connector (OSTI)

A technetium activity believed to be Tc97g has been observed to decay with molybdenum K x-rays and to possess a half-life in the range of 104 to 105 years.

G. E. Boyd

1954-07-01T23:59:59.000Z

453

JOURNAL DE PHYSIQUE Colloque C6, supplkment au no8, Tome 39, aotit 1978, page C6-387 Nb Ge AND EFFECTS OF HEAVY ION IRRADIATION AND THERMAL RECOVERY ON  

E-Print Network (OSTI)

irridiation data. The T -residual resistan- ce ratio (RRR) correlation is similar to the re- sults greater resistan- ce increases in Nb3Ge. Before reaching the "satura- ted state", Tc increases (p24K

Paris-Sud XI, Université de

454

Biomarkers and Response to Bevacizumab—Letter  

Science Journals Connector (OSTI)

...identified among the most promising markers. Nevertheless, the power to identify a statistically significant difference among responders...Collinson F , Hutchinson M, Craven RA, Cairns DA, Zougman A, Wind TC, et alPredicting response to bevacizumab in ovarian cancer...

Chiara Cremolini; Fotios Loupakis; Guido Bocci; and Alfredo Falcone

2014-02-15T23:59:59.000Z

455

E-Print Network 3.0 - al bulk crystals Sample Search Results  

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

are homogeneously dispersed in the residual glass of the bulk for Tc... consists of titanite (CaTiSiO5) and anorthite (CaAl2Si2O8) crystals that have nucleated heterogeneously......

456

Nonlinear programming without a penalty function or a filter by NIM ...  

E-Print Network (OSTI)

Apr 13, 2007 ... that this procedure ensures, for some ?tC1 ? (0, 1], the modified Cauchy ...... FCCU. 19. 8. 5. 5. 1.11e+01. 3.55e-15. 0.06. GRIDNETE. 60. 36. 7.

2007-04-13T23:59:59.000Z

457

Neutron scattering study of the iron based superconductors.  

E-Print Network (OSTI)

??In most iron-based and copper-oxide superconductors, the Tc [superconducting critical temperature] gradually increases upon charge carrier doping or isovalent doping. In the under-doped regime of… (more)

Wang, Miaoyin

2013-01-01T23:59:59.000Z

458

High-Precision Thermodynamics and Hagedorn Density of States  

E-Print Network (OSTI)

We compute the entropy density of the confined phase of QCD without quarks on the lattice to very high accuracy. The results are compared to the entropy density of free glueballs, where we include all the known glueball states below the two-particle threshold. We find that an excellent, parameter-free description of the entropy density between 0.7Tc and Tc is obtained by extending the spectrum with the exponential spectrum of the closed bosonic string.

Harvey B. Meyer

2009-05-26T23:59:59.000Z

459

PHYSICAL REVIEW B 85, 174110 (2012) Crystal structures, strain analysis, and physical properties of Sr0.7Ce0.3MnO3  

E-Print Network (OSTI)

phase transitions were proposed: an octahedral tilting transition at Tc, 938 K (Pm¯3m I4/mcm, R+ 4+ , introducing Jahn-Teller (JT)­active Mn3+ (d4 ) ions. This brings about a transition to a tetragonal structure ), and an isosymmetric, electronically driven (Jahn-Teller­like) transition at Tc,JT 770 K (I4/mcm, R+ 4 I4/mcm, R+ 4

Cambridge, University of

460

Application Engineering,  

E-Print Network (OSTI)

plant LC LC PC z=0 z=0 z=0 z=1 z=1 TC TC z=0 HP-pump Steam-turbin Condenser LP-pump Air compressor Deaerator HP-pump Steam-turbin Condenser LP-pump Air compressor Deaerator HP-pump Condenser LP-pump Air-pump Gas-turbin Steam-turbin Condenser LP-pump Air compressor Deaerator HP-pump Gas-turbin Steam-turbin

Skogestad, Sigurd

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

Advanced Size Measurements and Aerodynamic Classification of Solid Recovered Fuel Particles  

Science Journals Connector (OSTI)

Solid recovered fuels are highly heterogeneous mixtures generated from high calorific fractions of nonhazardous waste materials intended to be fired in existing coal power plants and industrial furnaces (CEN/TC 343 N 9rev3, Solid Recovered Fuel, 2003). ... There are numerous definitions for the term SRF, but the recent one put forth by CEN/TC 3431 defined it as “fuel prepared from non-hazardous waste to be used for energy recovery in waste incineration and co-incineration plants”. ...

Gregory Dunnu; Thomas Hilber; Uwe Schnell

2006-06-29T23:59:59.000Z

462

A revised model for radiation dosimetry in the human gastrointestinal tract  

E-Print Network (OSTI)

Ridge National Laboratory RSC Recto-Sigmoid Colon SAF Specific Absorbed Fraction SI Small Intestine ST Stomach TC Transverse Colon TTB Thick-Target Bremsstrahlung ULI Upper Large Intestine 1 INTRODUCTION... the contents- mucus interface only for four radionuclides important in nuclear medicine. The radionuclides were Y-90, Tc-99m, I-123, and I-131. Except for Y-90, the remaining three emit both penetrating and the weakly...

Bhuiyan, Md. Nasir Uddin

2004-09-30T23:59:59.000Z

463

Bubble formation in Rangely Field, Colorado  

E-Print Network (OSTI)

tc Determine the Effect of Times Of. Standing on Time &equired for Bubble Formation at 67 psi Supersaturaticns. Page 20 Tests to Determine Bubble Frequency. Average Bubble Frequency Data. 23 27 The data reported in this thesis deal... if present, or would tend to form one. However, as the pressure on the saturated oil declines, the oil becomes supersatur- ated, except as bubbles may form and diffusion take place tc eliminate the supersaturation. This research is devoted to a study...

Wood, J. W

1953-01-01T23:59:59.000Z

464

The use of Technetium-99m stannous pyrophosphate imaging as an index of myocardial infarction  

E-Print Network (OSTI)

stannous fluoride. Sterile, nonpyrogenic sodium pertechnetate Tc-PYP 99m solution was used as the diluent, and the resulting radiopharmaceutical was injected into the cephalic vein 1. 5 to 2 hours before imaging. This solution was prepared no more than... Chairman of Advisory Committee: Dr. Dan Hightower Technetium-99m stannous pyrophosphate ( Tc-PYP) 99m myocardial scintigraphy is a, sensitive indicator of myo- cardial ini'arction. The uptake of the radionuclide by damaged myocardial cells gives a...

Sanford, Jeffrey Clayton

1981-01-01T23:59:59.000Z

465

Scintigraphic demonstration of tracheo-esophageal fistula  

SciTech Connect

A tracheo-esophageal fistula, developed following radiotherapy for an esophageal carcinoma, was vividly demonstrated by radionuclide imaging. The abnormality was later confirmed by a barium esophagram and endoscopic examinations. The scintigraphic procedure, making use of a Tc-99m sulfur colloid swallow, appears to be a simple alternative method use of a Tc-99m sulfur colloid swallow, appears to be a simple alternative method that may be clinically useful for the diagnosis of such a condition.

Dunn, E.K.; Man, A.C.; Lin, K.J.; Kaufman, H.D.; Solomon, N.A.

1983-12-01T23:59:59.000Z

466

The dhfrI trimethoprim resistance gene of Tn7 can be found at specific sites in other genetic surroundings.  

Science Journals Connector (OSTI)

...membranes (Millipore). The filters were adhered to Iso-Sensitest agar plates that were dried to about...Characteristic(s)a Reference pLMO20 Ap Hg Km Su Tc Tp 33 pLMO24 Ap Hg Km Su Tc Tp 34 pLMO150 Hg Km Su Tp This study pLMO151 Hg Km Su Tp This study pLMO229...

L Sundström; O Sköld

1990-04-01T23:59:59.000Z

467

Relaxation time of the order parameter in a high-temperature superconductor  

Science Journals Connector (OSTI)

We present femtosecond time-resolved measurements on the high-Tc superconductor Tl2Ba2Ca2Cu3O10. At temperatures below Tc, we observe a relaxation process which is distinct from the equilibration of hot carriers in the normal state. Our results demonstrate an increasing relaxation rate as the superconducting gap opens. This is consistent with the behavior of conventional metallic superconductors.

G. L. Eesley; J. Heremans; M. S. Meyer; G. L. Doll; S. H. Liou

1990-12-31T23:59:59.000Z

468

The Energy Tracker  

E-Print Network (OSTI)

Conference, Houston, TX, June 17-19, 1986 I t EI'-JERG'( CC)ST [] El....ECTRIC t. TOTAL. ~tcO ,3:1 120 "0 , CO 90 .~- E1) '-' :di 70... Conference, Houston, TX, June 17-19, 1986 I t EI'-JERG'( CC)ST [] El....ECTRIC t. TOTAL. ~tcO ,3:1 120 "0 , CO 90 .~- E1) '-' :di 70...

Ranzau, P. A.

469

Developing a method for customized induction of flowering  

Science Journals Connector (OSTI)

Gene identifiers or Accession numbers are AtFT At1g65480, AtBFT At5g62040, AtTFL1 At5g03840, AtTSF At4g20370, Gm TC252514, HvVRN3 TC168728, LeSFT AY186735, LeSP U84140, LjCEN AY423715, MtFTa1 HQ721813; MtFTa2 HQ7...

Chin Chin Yeoh; Martin Balcerowicz; Rebecca Laurie; Richard Macknight…

2011-04-01T23:59:59.000Z

470

Analysis of the California Solar Resource--Volume 3: Appendices  

E-Print Network (OSTI)

eEC eEC tEC CE·C ere .CCT CFC CFe JAN HB eEe CFC tEC eFC JANnos TC 31 JAr-; iC 31 IIAT ICNAl TC rEC [Fe erc CFe eEC t\\OV CEC CFe DEC CEe FfS [EC rEC INCREASE DAn Y V~LUf.S BY IN

erdahl, P.

2011-01-01T23:59:59.000Z

471

Technetium Immobilization Forms Literature Survey  

SciTech Connect

Of the many radionuclides and contaminants in the tank wastes stored at the Hanford site, technetium-99 (99Tc) is one of the most challenging to effectively immobilize in a waste form for ultimate disposal. Within the Hanford Tank Waste Treatment and Immobilization Plant (WTP), the Tc will partition between both the high-level waste (HLW) and low-activity waste (LAW) fractions of the tank waste. The HLW fraction will be converted to a glass waste form in the HLW vitrification facility and the LAW fraction will be converted to another glass waste form in the LAW vitrification facility. In both vitrification facilities, the Tc is incorporated into the glass waste form but a significant fraction of the Tc volatilizes at the high glass-melting temperatures and is captured in the off-gas treatment systems at both facilities. The aqueous off-gas condensate solution containing the volatilized Tc is recycled and is added to the LAW glass melter feed. This recycle process is effective in increasing the loading of Tc in the LAW glass but it also disproportionally increases the sulfur and halides in the LAW melter feed which increases both the amount of LAW glass and either the duration of the LAW vitrification mission or the required supplemental LAW treatment capacity.

Westsik, Joseph H.; Cantrell, Kirk J.; Serne, R. Jeffrey; Qafoku, Nikolla

2014-05-01T23:59:59.000Z

472

Efficient ternary sources of working-body vapors for thermionic converters  

SciTech Connect

The results of experiments to determine the energy characteristics of a cylindrical thermionic converter (TC) are presented. The TC investigated had ternary working-body vapor sources based on multicomponent cesium systems with either bismuth oxide, vanadium oxide, or tungsten oxide additions. Sorption characteristics of the systems were first determined, and then the ternary source was operated as part of the TC. The kinetics of the interaction of cesium vapor with the oxides was studied gravimetrically at various collector temperatures. The cesium TC electrical power output was increased 40 to 60% with a Cs{sub 12}Bi{sub 2}O{sub 3} ternary source in the arc mode. A Cs{sub 3}V{sub 2}O{sub 5} system increased TC output power from 20 to 40%, depending on emitter temperature. For the two Cs{sub x}WO{sub 3} sources examined, power increased almost 50%. The ternary sources examined also extended the working temperature range of the TC. 18 refs., 5 figs.

Kalandarishvili, A.G.; Kashiya, V.G.

1994-11-01T23:59:59.000Z

473

Nucleation of Superconductivity at a Tunneling Barrier of High Transmissivity  

Science Journals Connector (OSTI)

We present a calculation of the parallel critical field of a plane tunneling barrier in an otherwise homogeneous superconductor, valid for Tc-T?Tc. We have found a solution of the Ginzburg-Landau equation which satisfies the semiphenomenological boundary conditions proposed by de Gennes. The critical field is significantly lower than Hc3 when the tunneling current is of the same order of magnitude as the sheath current. When the ratio (tunneling current)/(sheath current) is small, it is proportional to ?(T). Since ?(T)?? at Tc, in principle the critical field of a tunneling barrier of any transmissivity must go to Hc2 as T?Tc, although in practice this may be impossible to observe for small transmissivities because of the finite transition width at Tc. For the pure-metal, specular-barrier model at a fixed temperature T not too close to Tc, most of the drop in critical field from Hc3 to Hc2 occurs for transmissivities in the range 0.01 to 0.1.The effect we have predicted, if experimentally confirmed, may be useful as a tool for investigating the electronic properties of grain boundaries in polycrystalline metal.

R. G. Boyd

1967-01-10T23:59:59.000Z

474

Cast Stone Oxidation Front Evaluation: Preliminary Results For Samples Exposed To Moist Air  

SciTech Connect

The rate of oxidation is important to the long-term performance of reducing salt waste forms because the solubility of some contaminants, e.g., technetium, is a function of oxidation state. TcO{sub 4}{sup ?} in the salt solution is reduced to Tc(IV) and has been shown to react with ingredients in the waste form to precipitate low solubility sulfide and/or oxide phases. Upon exposure to oxygen, the compounds containing Tc(IV) oxidize to the pertechnetate ion, Tc(VII)O{sub 4}{sup ?}, which is very soluble. Consequently the rate of technetium oxidation front advancement into a monolith and the technetium leaching profile as a function of depth from an exposed surface are important to waste form performance and ground water concentration predictions. An approach for measuring contaminant oxidation rate (effective contaminant specific oxidation rate) based on leaching of select contaminants of concern is described in this report. In addition, the relationship between reduction capacity and contaminant oxidation is addressed. Chromate (Cr(VI) was used as a non-radioactive surrogate for pertechnetate, Tc(VII), in Cast Stone samples prepared with 5 M Simulant. Cast Stone spiked with pertechnetate was also prepared and tested. Depth discrete subsamples spiked with Cr were cut from Cast Stone exposed to Savannah River Site (SRS) outdoor ambient temperature fluctuations and moist air. Depth discrete subsamples spiked with Tc-99 were cut from Cast Stone exposed to laboratory ambient temperature fluctuations and moist air. Similar conditions are expected to be encountered in the Cast Stone curing container. The leachability of Cr and Tc-99 and the reduction capacities, measured by the Angus-Glasser method, were determined for each subsample as a function of depth from the exposed surface. The results obtained to date were focused on continued method development and are preliminary and apply to the sample composition and curing / exposure conditions described in this report. The Cr oxidation front (depth to which soluble Cr was detected) for the Cast Stone sample exposed for 68 days to ambient outdoor temperatures and humid air (total age of sample was 131 days) was determined to be about 35 mm below the top sample surface exposed. The Tc oxidation front, depth at which Tc was insoluble, was not determined. Interpretation of the results indicates that the oxidation front is at least 38 mm below the exposed surface. The sample used for this measurement was exposed to ambient laboratory conditions and humid air for 50 days. The total age of the sample was 98 days. Technetium appears to be more easily oxidized than Cr in the Cast Stone matrix. The oxidized forms of Tc and Cr are soluble and therefore leachable. Longer exposure times are required for both the Cr and Tc spiked samples to better interpret the rate of oxidation. Tc spiked subsamples need to be taken further from the exposed surface to better define and interpret the leachable Tc profile. Finally Tc(VII) reduction to Tc(IV) appears to occur relatively fast. Results demonstrated that about 95 percent of the Tc(VII) was reduced to Tc(IV) during the setting and very early stage setting for a Cast Stone sample cured 10 days. Additional testing at longer curing times is required to determine whether additional time is required to reduce 100 % of the Tc(VII) in Cast Stone or whether the Tc loading exceeded the ability of the waste form to reduce 100 % of the Tc(VII). Additional testing is required for samples cured for longer times. Depth discrete subsampling in a nitrogen glove box is also required to determine whether the 5 percent Tc extracted from the subsamples was the result of the sampling process which took place in air. Reduction capacity measurements (per the Angus-Glasser method) performed on depth discrete samples could not be correlated with the amount of chromium or technetium leached from the depth discrete subsamples or with the oxidation front inferred from soluble chromium and technetium (i.e., effective Cr and Tc oxidation fronts). Residual reduction capacity

Langton, C. A.; Almond, P. M.

2013-11-26T23:59:59.000Z

475

Novel imaging techniques, integrated with mineralogical, geochemical and microbiological characterizations to determine the biogeochemical controls on technetium mobility in FRC sediments  

SciTech Connect

The objective of this research program was to take a highly multidisciplinary approach to define the biogeochemical factors that control technetium (Tc) mobility in FRC sediments. The aim was to use batch and column studies to probe the biogeochemical conditions that control the mobility of Tc at the FRC. Background sediment samples from Area 2 (pH 6.5, low nitrate, low {sup 99}Tc) and Area 3 (pH 3.5, high nitrate, relatively high {sup 99}Tc) of the FRC were selected (http://www.esd.ornl.gov/nabirfrc). For the batch experiments, sediments were mixed with simulated groundwater, modeled on chemical constituents of FRC waters and supplemented with {sup 99}Tc(VII), both with and without added electron donor (acetate). The solubility of the Tc was monitored, alongside other biogeochemical markers (nitrate, nitrite, Fe(II), sulfate, acetate, pH, Eh) as the 'microcosms' aged. At key points, the microbial communities were also profiled using both cultivation-dependent and molecular techniques, and results correlated with the geochemical conditions in the sediments. The mineral phases present in the sediments were also characterized, and the solid phase associations of the Tc determined using sequential extraction and synchrotron techniques. In addition to the batch sediment experiments, where discrete microbial communities with the potential to reduce and precipitate {sup 99}Tc will be separated in time, we also developed column experiments where biogeochemical processes were spatially separated. Experiments were conducted both with and without amendments proposed to stimulate radionuclide immobilization (e.g. the addition of acetate as an electron donor for metal reduction), and were also planned with and without competing anions at high concentration (e.g. nitrate, with columns containing Area 3 sediments). When the columns had stabilized, as determined by chemical analysis of the effluents, we used a spike of the short-lived gamma emitter {sup 99m}Tc (50-200 MBq; half life 6 hours) and its mobility was monitored using a {gamma}-camera. Incorporation of low concentrations of the long-lived 99Tc gave a tracer that can be followed by scintillation counting, should the metastable form of the radionuclide decay to below detection limits before the end of the experiment (complete immobilization or loss of the Tc from the column). After the Tc was reduced and immobilized, or passed through the system, the columns were dismantled carefully in an anaerobic cabinet and the pore water geochemistry and mineralogy of the columns profiled. Microbial community analysis was determined, again using molecular and culture-dependent techniques. Experimental results were also modeled using an established coupled speciation and transport code, to develop a predictive tool for the mobility of Tc in FRC sediments. From this multidisciplinary approach, we hoped to obtain detailed information on the microorganisms that control the biogeochemical cycling of key elements at the FRC, and we would also be able to determine the key factors that control the mobility of Tc at environmentally relevant concentrations at this site.

Jonathan R. Lloyd

2009-02-03T23:59:59.000Z

476

Technetium Inventory, Distribution, and Speciation in Hanford Tanks  

SciTech Connect

The purpose of this report is three fold: 1) assemble the available information regarding technetium (Tc) inventory, distribution between phases, and speciation in Hanford’s 177 storage tanks into a single, detailed, comprehensive assessment; 2) discuss the fate (distribution/speciation) of Tc once retrieved from the storage tanks and processed into a final waste form; and 3) discuss/document in less detail the available data on the inventory of Tc in other "pools" such as the vadose zone below inactive cribs and trenches, below single-shell tanks (SSTs) that have leaked, and in the groundwater below the Hanford Site. A thorough understanding of the inventory for mobile contaminants is key to any performance or risk assessment for Hanford Site facilities because potential groundwater and river contamination levels are proportional to the amount of contaminants disposed at the Hanford Site. Because the majority of the total 99Tc produced at Hanford (~32,600 Ci) is currently stored in Hanford’s 177 tanks (~26,500 Ci), there is a critical need for knowledge of the fate of this 99Tc as it is removed from the tanks and processed into a final solid waste form. Current flow sheets for the Hanford Waste Treatment and Immobilization Plant process show most of the 99Tc will be immobilized as low-activity waste glass that will remain on the Hanford Site and disposed at the Integrated Disposal Facility (IDF); only a small fraction will be shipped to a geologic repository with the immobilized high-level waste. Past performance assessment studies, which focused on groundwater protection, have shown that 99Tc would be the primary dose contributor to the IDF performance.

Serne, R. Jeffrey; Rapko, Brian M.

2014-05-02T23:59:59.000Z

477

Investigations to Identify the Soluble, Non-pertechnetate Species in the  

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

Wayne W. Lukens1, David K. Shuh1, Norman C. Schroeder2, and Kenneth R. Ashley3 Wayne W. Lukens1, David K. Shuh1, Norman C. Schroeder2, and Kenneth R. Ashley3 1Lawrence Berkeley National Laboratory, Berkeley, CA 2Los Alamos National Laboratory, Los Alamos, NM 3Texas A&M University-Commerce, Commerce, TX Technetium (99Tc) 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 99Tc and the high environmental mobility of pertechnetate, TcO4-, the most stable form of technetium under aerobic conditions. Because of these properties, 99Tc is often the radionuclide of greatest concern when evaluating the near-term performance of waste repositories. This concern is reflected in the initial plan for the vitrification of high-level nuclear waste stored in underground tanks at the Hanford site (Figure 1), in which the tank waste is separated into a high activity waste stream, consisting mainly of insoluble components, and a low activity waste stream, which is mainly the solution phase and includes most of the 99Tc in the

478

Particle-hole symmetry broken pseudogap in high temperature superconductors  

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Particle-hole symmetry broken pseudogap in Particle-hole symmetry broken pseudogap in high temperature superconductors High-temperature (Tc) superconductivity is one of the most important topics in condensed matter physics. Despite extensive studies over more than two decades, the microscopic mechanism of high temperature superconductivity still remains elusive due to many unconventional properties that are not well understood. Among them, the most mysterious behavior of high-Tc superconductor is the nature of so called "pseudogap", which has been a focus of the field for many years. In conventional superconductors, a gap exists in the energy absorption spectrum only below Tc, corresponding to the energy price to pay for breaking a Cooper pair of electrons. In high-Tc cuprate superconductors, an energy gap called the pseudogap exists above Tc but below T*, and is controversially attributed either to pre-formed superconducting pairs or to competing phases. Recently, by carefully studying the "symmetry" of the gap, researchers Makoto Hashimoto and Rui-Hua He, along with their co-workers in Prof. Zhi-Xun Shen's group at Stanford University, have found crucial evidence suggesting that the particle-hole symmetry required by superconductivity is broken in the pseudogap state.

479

Pseudogap and Superconducting Gap in High-Temperature Superconductors  

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Pseudogap and Superconducting Gap in Pseudogap and Superconducting Gap in High-Temperature Superconductors Two decades after the discovery of first high temperature superconductors, the microscopic mechanism of high-Tc superconductivity remains elusive. In conventional superconductors, it has been well established that electrons form so-called "Cooper pairs" to give rise to superconductivity. The pair binding manifests itself as an energy gap in many spectroscopic measurements. This energy gap, known as superconducting gap, appears at the superconducting transition temperature Tc where the resistance also vanishes. For high temperature superconductors, the story is more complicated. Over a wide region of compositions and temperatures, there exists an energy gap well above Tc. This energy gap is called pseudogap [1], because there is no direct correlation to the superconducting transition. The origin of this pseudogap and its relation to the superconducting gap are believed to hold the key for understanding the mechanism of high-Tc superconductivity - one of the outstanding problems in condensed matter physics. In this regard, researchers Kiyohisa Tanaka and Wei-Sheng Lee, along with their co-workers in Prof. Zhi-Xun Shen's group at Stanford University, have recently made an important discovery about the coexistence of two distinct energy gaps that have opposite doping dependence. Their observation not only provides a natural explanation for the contradictory results about the superconducting gap deduced from different experimental techniques, but also has profound implications on the mechanism of high-Tc superconductivity.

480

Interfacial Reduction - Oxidation Mechanisms Governing Fate and Transport of Contaminants in the Vadose Zone  

SciTech Connect

Many soil contamination sites at Department of Energy installations contain radionuclides and toxic metals such as technetium (Tc), uranium (U) and chromium (Cr). In Situ Gaseous Reduction (ISGR) using dilute hydrogen sulfide (H2S) as reductant is a technology uniquely suitable for the vadose zone soil remediation to reduce and immobilize these contaminants. It is conceivable that the ISGR approach can be applied either to immobilize pre-existing contaminants or to create a reductive permeable reactive barrier (PRB) through hydrogen sulfide gas treatment of soils for contaminant interception. This project aims to improve our understanding of the complex interactions among the contaminants (U and Tc), H2S, and various soil constituents. The collaborative effort involving the University of Missouri-Columbia, Pacific Northwest National Laboratory, and Illinois Institute of Technology will provide the knowledge needed to further develop and optimize the ISGR technology. Specific research tasks include: (a) examine the reduction kinetics of Tc(VII) and U(VI) by H2S; (b) measure the reduction kinetics of Tc(VII) and U(VI) by iron sulfides; (c) characterize the speciation of immobilized Tc and U and investigate the immobilization mechanisms; (d) assess the long-term stability of the contaminants immobilized by the ISGR treatment; and (e) validate the pure phase experimental results under natural soil conditions.

Deng, Baolin

2004-12-01T23:59:59.000Z

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.


481

Labeling cellular elements of blood with Technetium-99m  

SciTech Connect

The purpose of this proposal is to develop new technique of labeling platelets and white cells with Tc-99m radionuclide. The conditions of labeling canine platelets and white cells with the lipid-soluble Tc-99m HMPAO have been optimized. The function of labeled platelets were evaluated by the determination of platelet survival time and recovery and these values were compared with that of In-111 tropolone labeled platelets. We developed the bilateral femoral catheterization model for the evaluation of platelet-thrombosis on control and heparin-bonded catheters in dogs. We are evaluating platelet thrombosis in the hollow-fiber hemodialyzer with Tc-99m and In-111 labeled platelets. We have developed the flow-loop for in vitro studies and are using a pig model for quantitation of platelet-consumption during hemodialysis. We are currently evaluating the new technique of platelet and white cell-labeling with Tc-99m and testing them in animal models of thrombosis and infection (osteo-myelitis). We are also using the Tc-99m HMPAO labeled mixed white cells in the early diagnosis (3-hour post-injection) of acute and chronic infection in patients and comparing the results with that of IN-111 oxine labeled white cells.

Dewanjee, M.K.

1990-08-01T23:59:59.000Z

482

Non-Pertechnetate Technetium Sensor Research and Development  

SciTech Connect

There remain several significant uncertainties in the understanding and modeling of the fate and speciation of 99Tc in Hanford waste tanks, glass, and low-temperature waste forms. A significant (2% to 25%) fraction of the 99Tc in the water-soluble portion of the tank waste may be present as a non-pertechnetate species that has not been identified and, based on experimentation to date, cannot be effectively separated from the wastes. This task will provide a sensor specifically tuned to detect the Tc(I)-carbonyl species believed to constitute the main fraction of the non-pertechnetate form of technetium. By direct measurement of the non-pertechnetate species, such a sensor will help reduce the uncertainties in the modeling of the fate and speciation of 99Tc in Hanford tanks and waste forms. This report summarizes work done in FY 2014 exploring the chemistry of a low-valence technetium species, [Tc(CO)3(H2O)3]+, a compound of interest due to its implication in the speciation of alkaline-soluble technetium in several Hanford tank waste supernatants. Progress made in FY 2014 was sponsored by the Department of Energy’s Office of Environmental Management and is summarized in this report.

Bryan, Samuel A.; Crawford, Amanda D.; Heineman, William R.; Rapko, Brian M.; Branch, Shirmir D.

2014-10-01T23:59:59.000Z

483

Oceanic Control of Northeast Pacific Hurricane Activity at Interannual Timescales  

SciTech Connect

Despite the strong dependence of the Power Dissipation Index (PDI), which is a measure of the intensity of Tropical Cyclone (TC) activity, on tropical sea-surface temperatures (SSTs), the variations in PDI are not completely explained by SST. Here we show, using an analysis of a string of observational data sets, that the variability of the thermocline depth (TD) in the east Pacific exerts a significant degree of control on the variability of PDI in that region. On average, a deep thermocline with a larger reservoir of heat favors TC intensification by reducing SST cooling while a shallow thermocline with a smaller heat reservoir promotes enhanced SST cooling that contributes to TC decay. At interannual time scales, the variability of basin-mean TD accounts for nearly 30% of the variability in the PDI during the TC season. Also, about 20% of the interannual variability in the east Pacific basin-mean TD is due to the El Niño and the Southern Oscillation (ENSO), a dominant climate signal in this region. This study suggests that a better understanding of the factors governing the interannual variability of the TD conditions in the east Pacific and how they may change over time, may lead to an improved projection of future east Pacific TC activity.

Balaguru, Karthik; Leung, Lai-Yung R.; Yoon, Jin-Ho

2013-10-16T23:59:59.000Z

484

Effects of low-level Ag doping on Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+x}  

SciTech Connect

Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} has been doped with silver, up to 10,000 ppm, in three ways: excess additions, substitution of Ag for Bi, and substitution of Ag for Sr. Effects of doping on the c-axis lattice parameter and critical temperature ({Tc}) were measured. Effects from doing were only observed in slow-cooled [10{degree}/hr] oxygen equilibrated samples. Doping by excess additions caused a small decrease in {Tc} and an increase in the c-axis length of the lattice. Doping by substitution, compared to excess Ag additions, caused a larger decrease in {Tc} and higher c-axis values for doping levels up to 1,000 ppm. Doping by substitution at higher levels (1,000--10,000 ppm) caused {Tc} to increase and the c-axis to decrease. Samples with similar substitutional doping levels exhibited comparable {Tc} values and samples with Ag substituted for Sr consistently exhibited higher c-axis values than samples that had equivalent amounts of Ag substituted for Bi.

Deis, T.A.; Eror, N.G.; Krishnaraj, P.; Prorok, B.C.; Lelovic, M. [Univ. of Pittsburgh, PA (United States). Dept. of Materials Science and Engineering; Balachandran, U. [Argonne National Lab., IL (United States). Energy Technology Div.

1995-07-01T23:59:59.000Z

485

HiR Thermal Testing Results  

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

5 5 position specimen # specimen description (test conditions: cold side -18°C, warm side 21°C) date + time 100 mm from head TC center of glass TC 100 mm from sill TC upper IR line average lower IR line average complete IR line average left 6 triple, 2 sputtered low-e glass layers, uncoated acrylic center layer in grooved spacer, Kr 3/15/05 13:40 18.08 17.75 17.91 16.84 17.43 right 8 triple/quad, 2 sputtered low-e layers, 2 layer teflon center insert clinging in center, Kr 18.26 17.58 18.05 17.23 17.67 - Back to Summary - - Back to Summary - - Back to Summary - delta T line average delta T 100mm from head delta T center of glass delta T 100mm from sill ambient high ambient low ambient average six surface average

486

Tank Waste Corporate Board Meeting 11/18/10 | Department of Energy  

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

Tank Waste Corporate Board Meeting 11/18/10 Tank Waste Corporate Board Meeting 11/18/10 Tank Waste Corporate Board Meeting 11/18/10 The following documents are associated with the Tank Waste Corporate Board Meeting held on November 18th, 2010. High-Level Waste Corporate Board Meeting Agenda Journey to Excellence Goal 2 and Enhanced Tank Waste Strategy Introduction to Tc/I in Hanford Flowsheet Fate of Tc99 at WTP and Current Work on Capture Technetium Retention During LAW Vitrification Impacts of Feed Composition and Recycle on Hanford Low-Activity Waste Glass Mass Secondary Waste Forms and Technetium Management Hanford Low Activity Waste (LAW) Fluidized Bed Steam Reformer (FBSR) Na-Al-Si (NAS) Waste Form Qualification Salt Waste Processing Initiatives Recap and Conclusions to Tc/I in Hanford Flowsheet Presentations

487

 

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

An OI Analytical 1020A Total Organic Carbon (TOC) Analyzer is used to measure the TOC in the samples. The liquid TOC analyzer directly measures An OI Analytical 1020A Total Organic Carbon (TOC) Analyzer is used to measure the TOC in the samples. The liquid TOC analyzer directly measures both total carbon (TC) and total inorganic carbon (TIC). The CO2 released following combustion is measured to determine the quantity of total carbon in the sample. TIC measurements require an additional sample uptake followed by acidification of the sample with phosphoric acid. The acid reacts with any inorganic carbon in the sample (e.g., carbonate ion or bicarbonate ion) to form CO2 which is measured by the analyzer as the TIC. TOC is determined by manually subtracting the TIC from the TC. Total Carbon Analysis of Liquid Environmental Samples Savannah River Site Aiken South Carolina TC - A - 2009 - 170, Rev. 0

488

Current Projects | Princeton Plasma Physics Lab  

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Current Projects Current Projects In Situ Production of Radionuclide Technetium-99m Researchers at Princeton Plasma Physics Laboratory have developed a new process for the production of Molybdenum 99 (Mo-99), a man made radionuclide which decays (T 1/2 = 66 hours) to Technetium-99m (Tc-99m). Tc-99 m is a radioactive tracer isotope, used in the nuclear medical field for diagnostic imaging, for 2/3 of all diagnostic medical isotope procedures In the United States. Tc-99m has a relatively short half life of 6 hours, which makes it ideal in medical diagnostic tests where the patient only retains a minimal amount of radiation from the examination. (See PPPL Digest) Plasma Treatment of Electrodes for Intelligent Materials Ras Labs, LLC, a woman-owned small business, committed to producing

489

HiR Thermal Testing Results  

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

4 4 position specimen # specimen description (test conditions: cold side -18°C, warm side 21°C) date + time 100 mm from head TC center of glass TC 100 mm from sill TC upper IR line average lower IR line average complete IR line average left 6 triple, 2 sputtered low-e glass layers, uncoated acrylic center layer in grooved spacer, Kr 3/11/05 11:40 18.10 17.80 18.13 17.44 17.82 right 7 triple, 2 sputtered low-e glass layers, uncoated acrylic center layer top angled toward cold side, Kr 17.80 13.74 16.90 14.44 15.77 - Back to Summary - - Back to Summary - - Back to Summary - delta T line average delta T 100mm from head delta T center of glass delta T 100mm from sill ambient high ambient low ambient average six surface average

490

Research Highlight  

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

Parameterizing the Ice Fall Speed in Climate Models: Results from TC4 and Parameterizing the Ice Fall Speed in Climate Models: Results from TC4 and ISDAC Download a printable PDF Submitter: Mitchell, D. L., Desert Research Institute Mishra, S., NOAA - Coop. Inst. for Mesoscale Meteorological Studies Area of Research: General Circulation and Single Column Models/Parameterizations Working Group(s): Cloud Life Cycle, Cloud-Aerosol-Precipitation Interactions Journal Reference: Mitchell DL, S Mishra, and RP Lawson. 2011. "Representing the ice fall speed in climate models: Results from Tropical Composition, Cloud and Climate Coupling (TC4) and the Indirect and Semi-Direct Aerosol Campaign (ISDAC)." Journal of Geophysical Research - Atmospheres, 116, D00T03, doi:10.1029/2010JD015433. Relationship between De and Vm for all tropical cirrus cloud types (solid

491

Tank Waste Corporate Board Meeting 11/18/10 | Department of Energy  

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

18/10 18/10 Tank Waste Corporate Board Meeting 11/18/10 The following documents are associated with the Tank Waste Corporate Board Meeting held on November 18th, 2010. High-Level Waste Corporate Board Meeting Agenda Journey to Excellence Goal 2 and Enhanced Tank Waste Strategy Introduction to Tc/I in Hanford Flowsheet Fate of Tc99 at WTP and Current Work on Capture Technetium Retention During LAW Vitrification Impacts of Feed Composition and Recycle on Hanford Low-Activity Waste Glass Mass Secondary Waste Forms and Technetium Management Hanford Low Activity Waste (LAW) Fluidized Bed Steam Reformer (FBSR) Na-Al-Si (NAS) Waste Form Qualification Salt Waste Processing Initiatives Recap and Conclusions to Tc/I in Hanford Flowsheet Presentations Tank Closure More Documents & Publications

492

Evolution of London penetration depth with scattering in single crystals of K1?xNaxFe2As2  

Science Journals Connector (OSTI)

London penetration depth, ?(T), was measured in single crystals of K1?xNaxFe2As2, x=0 and 0.07, down to temperatures of 50 mK, ?Tc/50. Isovalent substitution of Na for K significantly increases impurity scattering, with ?(Tc) rising from 0.2 to 2.2 ?? cm, and leads to a suppression of Tc from 3.5 to 2.8 K. At the same time, a close to T-linear ??(T) in pure samples changes to almost T2 in the substituted samples. The behavior never becomes exponential as expected for the accidental nodes, as opposed to T2 dependence in superconductors with symmetry imposed line nodes. The superfluid density in the full temperature range follows a simple clean and dirty d-wave dependence, for pure and substituted samples, respectively. This result contradicts suggestions of multiband scenarios with strongly different gap structure on four sheets of the Fermi surface.

H. Kim; M. A. Tanatar; Yong Liu; Zachary Cole Sims; Chenglin Zhang; Pengcheng Dai; T. A. Lograsso; R. Prozorov

2014-05-30T23:59:59.000Z

493

Anomalous impurity effects in the iron-based superconductor KFe2As2  

Science Journals Connector (OSTI)

High-quality K(Fe1?xCox)2As2 single crystals have been grown by using the KAs flux method. Instead of increasing the superconducting transition temperature Tc through electron doping, we find that Co impurities rapidly suppress Tc down to zero at only x? 0.04. Such an effective suppression of Tc by impurities is quite different from that observed in Ba0.5K0.5Fe2As2 with multiple nodeless superconducting gaps. Thermal conductivity measurements in zero field show that the residual linear term ?0/T only changes slightly with 3.4% Co doping, despite the sharp increase in the scattering rate. The implications of these anomalous impurity effects are discussed.

A. F. Wang; S. Y. Zhou; X. G. Luo; X. C. Hong; Y. J. Yan; J. J. Ying; P. Cheng; G. J. Ye; Z. J. Xiang; S. Y. Li; X. H. Chen

2014-02-24T23:59:59.000Z

494

Atomic and electronic structures of single-layer FeSe on SrTiO3(001): The role of oxygen deficiency  

Using first-principles calculation, we propose an interface structure for single triple-layer FeSe on the SrTiO3(001) surface, a high-Tc superconductor found recently. The key component of this structure is the oxygen deficiency on the top layer of the SrTiO3 substrate, as a result of Se etching used in preparing the high-Tc samples. The O vacancies strongly bind the FeSe triple layer to the substrate giving rise to a (2×1) reconstruction, as observed by scanning tunneling microscopy. The enhanced binding correlates to the significant increase of Tc observed in experiment. The O vacancies also serve as the source of electron doping, which modifies the Fermi surface of the first FeSe layer by filling the hole pocket near the center of the surface Brillouin zone, as suggested from angle-resolved photoemission spectroscopy measurement.

Bang, Junhyeok; Li, Zhi; Sun, Y. Y.; Samanta, Amit; Zhang, Y. Y.; Zhang, Wenhao; Wang, Lili; Chen, X.; Ma, Xucun; Xue, Q.-K.; Zhang, S. B.

2013-06-01T23:59:59.000Z

495

PAD, a computer-aided molecular model building system utilizing two-dimensional graphical input  

E-Print Network (OSTI)

(IP)= (TX-1000) "32+1 P (IP+1) = (IY-1000) + 2+2 P (IP+2) =7 TF( ICIJT. EQ. 1. 0R. QBREAK)P (IP+2) ="17 P( P+ )="014 P (I P+4 ) = "?nn00 TP=IF+2 QBREAK=. FALSE. GO TO 100 IDE 1!TIF TC A TTOI'I NCDULE CALL CIC( "2400, 6) Pc J UW '7'7 45 101..., GT. 9)GC TO 1166 A )QCHEY=. TPUE. FLAG CHECK IF(QPEN. AND. B(1 1) . EQ. F1)G TC 1055 IF(QPEN. A", ID. B( 1 1 ) . FQ. FC)QPEN=. FAL. E. IF( B(11 ) . EC. F1)G TC' 1051 IF( X. GE. 1 "2 . OR. IY. GE. 1025)GO TO 1C14 IF(IX. LE. 1JO. CR. IY. LE. 100)GO...

White, William Gerald

2012-06-07T23:59:59.000Z

496

Magnetic ordering in the ammoniated fulleride (ND{sub 3})K{sub 3}C{sub 60}  

SciTech Connect

Intercalation of C{sub 60} with alkali metals leads to superconducting compositions A{sub 3}C{sub 60} (A = alkali metal) with critical temperatures as high as 33 K, surpassed only by the high-{Tc} superconducting cuprates. It is well established that {Tc} increases monotonically with increasing interfullerene separation, d, as the density of states at the Fermi level, N({epsilon}{sub F}) increases. Of paramount importance is the search for new materials with larger lattice parameters in order to establish whether {Tc} can be driven to higher values or the anticipated band narrowing will lead to electron localization and a transition to a Mott insulator. Ammoniation has proven an excellent method to achieve large expansions of the fulleride unit cells, as neutral NH{sub 3} molecules coordinate to the alkali ions, leading to large effective radii for the (NH{sub 3}){sub x}A{sup +} species.

Prassides, K.; Margadonna, S.; Arcon, D.; Lappas, A.; Shimoda, Hideo; Iwasa, Yoshihiro

1999-12-08T23:59:59.000Z

497

Study of technetium uptake in vegetation in the vicinity of the Portsmouth Gaseous Diffusion Plant  

SciTech Connect

Technetium-99 was measured in vegetation and soil collected on and near the Portsmouth Gaseous Diffusion Plant to obtain an estimate of the soil-to-vegetation concentration factors. The concentration factors appear to be lognormally distributed with a geometric mean of 3.4 (Bq/kg dry wt. tissue per Bq/kg dry wt. soil) and a geometric standard deviation of 4.7. A dose commitment was calculated using a hypothetical 3.7 x 10/sup 10/ Bq Tc-99/year release and the actual CY-1981 concentration release of Tc-99. The radiological significance of Tc-99 in the terrestial food chain is substantially less than previously believed.

Acox, T.A.

1982-01-01T23:59:59.000Z

498

IRON-PHOSPHATE GLASS FOR IMMOBILIZATION OF RADIOACTIVE TECHNETIUM  

SciTech Connect

Technetium-99 (Tc-99) can bring a serious environmental threat because of its high fission yield, long half-life, and high solubility and mobility in the ground water. The present work investigated the immobilization of Tc-99 (surrogated by Re) by heat-treating mixtures of an iron-phosphate glass with 1.5 to 6 wt.% KReO{sub 4} at {approx}1000 C. The Re retention in the glass was as high as {approx}1.2 wt. % while the loss of Re by evaporation during melting was {approx}50%. Re was uniformly distributed within the glass. The normalized Re release by the 7-day Product Consistency Test was {approx}0.39 g/m{sup 2}, comparable with that in phosphate-bonded ceramics and borosilicate glasses. These results suggest that iron-phosphate glass can provide a good matrix for immobilizing Tc-99.

KRUGER AA; HRMA PR; XU K; CHOI J; UM W; HEO J

2012-03-19T23:59:59.000Z

499

Negative Volume Thermal Expansion Via Orbital and Magnetic Orders in Ca2Ru1-xCrxO4(0  

Science Journals Connector (OSTI)

Ca2RuO4 undergoes a metal-insulator transition at TMI=357??K, followed by a well-separated transition to antiferromagnetic order at TN=110??K. Dilute Cr doping for Ru reduces the temperature of the orthorhombic distortion at TMI and induces ferromagnetic behavior at TC. The lattice volume V of Ca2Ru1-xCrxO4 (0TC, giving rise to a total volume expansion ?V/V?1%, which sharply contrasts the smooth temperature dependence of the few known examples of negative volume thermal expansion driven by anharmonic phonon modes. In addition, the near absence of volume thermal expansion between TC and TMI represents an Invar effect. The two phase transitions, which surprisingly mimic the classic freezing transition of water, suggest an exotic ground state driven by an extraordinary coupling between spin, orbit, and lattice degrees of freedom.

T. F. Qi, O. B. Korneta, S. Parkin, L. E. De Long, P. Schlottmann, and G. Cao

2010-10-22T23:59:59.000Z

500

Quantum correlations in bulk properties of solids obtained from neutron scattering  

E-Print Network (OSTI)

We demonstrate that inelastic neutron scattering technique can be used to indirectly detect and measure the macroscopic quantum correlations quantified by both entanglement and discord in a quantum magnetic material, VODPO4 . 1D2O. The amount of quantum correlations is obtained 2 by analyzing the neutron scattering data of magnetic excitations in isolated V4+ spin dimers. Our quantitative analysis shows that the critical temperature of this material can reach as high as Tc = 82.5 K, where quantum entanglement drops to zero. Significantly, quantum discord can even survive at Tc = 300 K and may be used in room temperature quantum devices. Taking into account the spin-orbit (SO) coupling, we also predict theoretically that entanglement can be significantly enhanced and the critical temperature Tc increases with the strength of spin-orbit coupling.

Ben-Qiong Liu; Lian-Ao Wu; Guo-Mo Zeng; Jian-Ming Song; Wei Luo; Yang Lei; Guang-Ai Sun; Bo Chen; Shu-Ming Peng

2014-07-02T23:59:59.000Z