National Library of Energy BETA

Sample records for tc tc tc

  1. Technetium Removal Using Tc-Goethite Coprecipitation

    SciTech Connect (OSTI)

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

    2013-11-18

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

  2. Response of High-Tc Superconductor Metamaterials to High Intensity...

    Office of Scientific and Technical Information (OSTI)

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

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

    SciTech Connect (OSTI)

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

    2014-01-01

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

  4. LA-UR- Tc4 - SSD(

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousand Cubic Feet)Multimaterialfor public release; distributionTc4

  5. 99Tc Process Monitoring System In-Lab Performance Characterization

    SciTech Connect (OSTI)

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

    2014-01-01

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

  6. Introduction to Tc/I in Hanford Flowsheet

    Office of Environmental Management (EM)

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

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

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

    character of the excitation spectrum is generally assumed to be linked to the "d-wave" symmetry of the superconducting state. In the high-Tc cuprates, this dichotomous gap...

  8. The deconfined phase near Tc and its decay into hadrons

    E-Print Network [OSTI]

    A. Dumitru; R. D. Pisarski

    2002-08-30

    We sketch an effective theory for the deconfined state of QCD near Tc. This relates the behavior of the expectation value of the Polyakov loop, and its two-point functions, to the pressure. Defining the ``mass'' of three and two gluon states from the imaginary and real parts of the Polyakov loop, while this ratio is 3:2 in perturbation theory, at Tc it is 3:1. We also discuss the decay of the deconfined state into hadrons.

  9. Solvent Extraction of Tc and Cs from Alkaline Nitrate Wastes

    SciTech Connect (OSTI)

    Moyer, Bruce A.; Bonnesen, Peter V.; Delmau, Laetitia H.; Haverlock, T J.; Sachleben, R A.; Leonard, R A.; Conner, C; Lumetta, Gregg J. ); M. Cox, M. Hidalgo, and M. Valiente

    2001-01-01

    This paper summarizes progress at three collaborating U.S. national laboratories on the extraction of the fission products 99Tc and 137Cs from alkaline high-level wastes. Efficient economical processes for Tc and Cs extraction (SRTALK and alkaline-side CSEX, respectively) have been developed, and testing has progressed through batch tests on actual wastes and continuous counter-current centrifugal-contactor tests on simulants.

  10. Solvent Extraction of Tc and Cs from Alkaline Nitrate Wastes

    SciTech Connect (OSTI)

    Bonnesen, P.V.; Conner, C.; Delmau, L.H.; Haverlock, T.J.; Leonard, R.A.; Lumetta, G.J.; Moyer, B.A.; Sachleben, R.A.

    1999-07-11

    This paper summarizes progress at three collaborating US national laboratories on the extraction of the fission products {sup 99}Tc and {sup 137}Cs from alkaline high-level wastes (HLW). Efficient, economical processes for Tc and Cs extraction (SRTALK and alkaline-side CSEX, respectively) have been developed, and testing has progressed through batch tests on actual wastes and continuous countercurrent centrifugal-contactor tests on simulants.

  11. Power Systems Development Facility Gasification Test Run TC07

    SciTech Connect (OSTI)

    Southern Company Services

    2002-04-05

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

  12. Tc Reductant Chemistry and Crucible Melting Studies with Simulated Hanford Low-Activity Waste

    SciTech Connect (OSTI)

    Kim, Dong-Sang; Soderquist, Chuck Z.; Icenhower, Jonathan P.; McGrail, B PETER.; Scheele, Randall D.; McNamara, Bruce K.; Bagaasen, Larry M.; Schweiger, Michael J.; Crum, Jarrod V.; Yeager, John D.; Matyas, Josef; Darnell, Lori P.; Schaef, Herbert T.; Owen, Antionette T.; Kozelisky, Anne E.; Snow, Lanee A.; Steele, Marilyn J.

    2005-03-30

    The FY 2003 risk assessment (RA) of bulk vitrification (BV) waste packages used 0.3 wt% of the technetium (Tc) inventory as a leachable salt and found it sufficient to create a significant peak in the groundwater concentration in a 100-meter down-gradient well. Although this peak met regulatory limits, considering uncertainty in the actual Tc salt fraction, peak concentrations could exceed the maximum concentration limit (MCL) under some scenarios so reducing the leachable salt inventory is desirable. The main objective of this study was to reduce the mobile Tc species available within a BV disposal package by reducing the oxidation state of the Tc in the waste feed and/or during melting because Tc in its reduced form of Tc(IV) has a much lower volatility than Tc(VII). Reduced Tc volatility has a secondary benefit of increasing the Tc retention in glass.

  13. trans-K3[TcO2(CN)4

    SciTech Connect (OSTI)

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

    2010-07-14

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

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

    SciTech Connect (OSTI)

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

    2010-12-01

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

  15. Power Systems Development Facility Gasification Test Run TC09

    SciTech Connect (OSTI)

    Southern Company Services

    2002-09-30

    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.

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

    E-Print Network [OSTI]

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

    2011-01-01

    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 ...

  17. The albedo, size, and density of binary Kuiper Belt object (47171) 1999 TC36

    E-Print Network [OSTI]

    2006-01-01

    2005. The formation of Kuiper-belt binaries through exchangeand Density of Binary Kuiper Belt Object (47171) 1999 TC 36emission of the binary Kuiper Belt Object (47171) 1999 TC 36

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

    E-Print Network [OSTI]

    Chen, Thomas M.

    TC/Rockwell/5-20-04 SMU Engineering p. 1 Tom Chen SMU, Dept of Electrical Engineering tchen@engr.smu.edu http://www.engr.smu.edu/~tchen Intrusion Detection for Mobile Ad Hoc Networks #12;TC/Rockwell/5) · General IDS techniques · Challenges for IDS in MANETs · Some research problems Outline #12;TC/Rockwell/5

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

    DOE Patents [OSTI]

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

    2000-01-01

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

  20. Rhenium Uptake as Analogue 96Tc by Steel Corrosion Products

    SciTech Connect (OSTI)

    K.M. Krupka, C.F. Brown, H. Todd Schaef, S. M. Heald, M. M. Valenta, B. W. Arey

    2006-04-30

    Static batch experiments were used to examine the sorption of dissolved perrhenate [Re(VII)], as a surrogate for pertechnetate [Tc(VII)], on corrosion products of A-516 carbon steel coupons contacted with synthetic groundwater or dilute water. After 109 days of contact time, the concentration of dissolved Re(VII) in the synthetic groundwater matrix decreased by approximately 26%; the dilute water matrix experienced a 99% decrease in dissolved Re(VII) over the same time period. Bulk x-ray diffraction (XRD) results for the corroded steel coupons showed that the corrosion products consisted primarily of maghemite, lepidocrocite, and goethite. Analyses of the coupons by scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) indicated that Re was present with the morphologically complex assemblages of Fe oxide/hydroxide corrosion products for samples spiked with the highest dissolved Re(VII) concentration (1.0 mmol/L) used for these experiments. Analyses of corroded steel coupons contacted with solutions containing 1.0 mmol/L Re(VII) by synchrotron-based methods confirmed the presence of Re sorbed with the corrosion product on the steel coupons. Analyses showed that the Re sorbed on these corroded coupons was in the +7 oxidation state, suggesting that the Re(VII) uptake mechanism did not involve reduction of Re to a lower oxidation state, such as +4. The results of our studies using Re(VII) as an analogue for {sup 99}Tc(VII) suggest that {sup 99}Tc(VII) would also be sorbed with steel corrosion products and that the inventory of {sup 99}Tc(VII) released from breached waste packages would be lower than what is now conservatively estimated.

  1. Power Systems Development Facility Gasification Test Run TC08

    SciTech Connect (OSTI)

    Southern Company Services

    2002-06-30

    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.

  2. Power Systems Development Facility Gasification Test Campaing TC18

    SciTech Connect (OSTI)

    Southern Company Services

    2005-08-31

    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.

  3. Office of Supplier Diversity Development C A T A L Y S TC A T A L Y S TC A T A L Y S T

    E-Print Network [OSTI]

    Pittendrigh, Barry

    Office of Supplier Diversity Development C A T A L Y S TC A T A L Y S TC A T A L Y S T T H E All ACCESS Purdue's Office of Supplier Diversity Development implements new program for small business Event Also In this Issue: Letter from the Editor ...p.2 Supplier Diversity News at Purdue...p.3

  4. Office of Supplier Diversity Development C A T A L Y S TC A T A L Y S TC A T A L Y S T

    E-Print Network [OSTI]

    Pittendrigh, Barry

    Office of Supplier Diversity Development C A T A L Y S TC A T A L Y S TC A T A L Y S T T H E P l u s: The Supplier Diversity Development Coalition MWBEs receive large contracts from Coalition: Letter from the Editor ...p.2 Purdue University Supplier Diversity News...p.3 National Supplier

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

    Office of Environmental Management (EM)

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

  6. Power Systems Development Facility Gasification Test Campaign TC22

    SciTech Connect (OSTI)

    Southern Company Services

    2008-11-01

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

  7. Power Systems Development Facility Gasification Test Run TC11

    SciTech Connect (OSTI)

    Southern Company Services

    2003-04-30

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

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

    SciTech Connect (OSTI)

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

    2011-01-10

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

  9. Cours 4TC 2006 jean-philippe.babau@insa-lyon.fr CITI -IF -INSA 1

    E-Print Network [OSTI]

    Brest, Université de

    Cours 4TC ­2006 jean-philippe.babau@insa-lyon.fr CITI - IF - INSA 1 Les langages SDL et MSC Jean-Philippe Babau INSA Lyon Cours 4TC ­2006 jean-philippe.babau@insa-lyon.fr CITI - IF - INSA 2 Introduction jean-philippe.babau@insa-lyon.fr CITI - IF - INSA 3 Plan · Les langage SDL et MSC ­ Principes

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

    E-Print Network [OSTI]

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

    2009-11-09

    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.

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

    E-Print Network [OSTI]

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

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

    SciTech Connect (OSTI)

    Nathalie A. Wall; Baohua Gu

    2012-12-20

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

  13. Two-point functions for SU(3) Polyakov Loops near T_c

    E-Print Network [OSTI]

    Adrian Dumitru; Robert D. Pisarski

    2002-04-23

    We discuss the behavior of two point functions for Polyakov loops in a SU(3) gauge theory about the critical temperature, T_c. From a Z(3) model, in mean field theory we obtain a prediction for the ratio of masses at T_c, extracted from correlation functions for the imaginary and real parts of the Polyakov loop. This ratio is m_i/m_r = 3 if the potential only includes terms up to quartic order in the Polyakov loop; its value changes as pentic and hexatic interactions become important. The Polyakov Loop Model then predicts how m_i/m_r changes above T_c.

  14. Power Systems Development Facility Gasification Test Campaign TC17

    SciTech Connect (OSTI)

    Southern Company Services

    2004-11-30

    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.

  15. Power Systems Development Facility Gasification Test Campaign TC21

    SciTech Connect (OSTI)

    Southern Company Services

    2007-01-30

    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 gasification operation with lignite coal following the 2006 gasifier configuration modifications. This demonstration took place during test campaign TC21, occurring from November 7, 2006, through January 26, 2007. The test campaign began with low sodium lignite fuel, and after 304 hours of operation, the fuel was changed to high sodium lignite, for 34 additional hours of operation. Both fuels were from the North Dakota Freedom mine. Stable operation with low sodium lignite was maintained for extended periods, although operation with high sodium lignite was problematic due to agglomeration formation in the gasifier restricting solids circulation.

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

    Office of Environmental Management (EM)

    is assumed to be available for all LAW feed in excess of current LAW vitrification facility capacity 8 B. WTP - Estimated Overall Tc 99 Mass Balance (continued) Averaged over 23...

  17. High temperature magnetic ordering in the 4d perovskite SrTcO3

    SciTech Connect (OSTI)

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

    2011-01-01

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

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

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

    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...

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

    E-Print Network [OSTI]

    Zbasnik, J.

    2011-01-01

    43573 SC-MAG-675 TESTS OF A GM CRYOCOOLER AND IDGH TC LEADS76SFOOO98. LBNL-43573 TESTS OF A GM CRYOCOOLER AND HIGH TCstage) Gifford McMahon (GM) cryocooler was selected for

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

    E-Print Network [OSTI]

    Williams, John Charles

    1991-01-01

    FORMATION OF THIN FILM Tl-BASED HIGH-Tc SUPERCONDUCTING OXIDES FROM AMORPHOUS ALLOY PRECURSORS A Thesis JOHN CHARLES WILLIAMS Submitted to the Once of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1991 Major Subject: Physics FORMATION OF THIN FILM Tl BASED HIGH Tc SUPERCONDUCTING OXIDES FROM AMORPHOUS ALLOY PRECURSORS A Thesis JOHN CHARLES WILLIAMS Approved as to style and content by: Donald G. Naugle...

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

    SciTech Connect (OSTI)

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

    2006-12-04

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

  2. Topological susceptibility near $T_{c}$ in SU(3) gauge theory

    E-Print Network [OSTI]

    Guang-Yi Xiong; Jian-Bo Zhang; Ying Chen; Chuan Liu; Yu-Bin Liu; Jian-Ping Ma

    2015-11-05

    Topological charge susceptibility $\\chi_{t}$ for pure gauge SU(3) theory at finite temperature is studied using anisotropic lattices. The over-improved stout-link smoothing method is utilized to calculate the topological charge. Near the phase transition point we find a rapid declining behavior for $\\chi_{t}$ with values decreasing from $(188(1)\\mathrm{MeV})^{4}$ to $(67(3)\\mathrm{MeV})^{4}$ as the temperature increased from zero temperature to $1.9T_{c}$ which demonstrates the existence of topological excitations far above $T_{c}$. The 4th order cumulant $c_4$ of topological charge, as well as the ratio $c_4/\\chi_t$ are also investigated. Results of $c_4$ show step-like behavior near $T_c$ while the ratio at high temperature agrees with the value as predicted by the diluted instanton gas model.

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

    E-Print Network [OSTI]

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

    2009-09-28

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

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

    E-Print Network [OSTI]

    P. Udomsamuthirun; R. Supadanaison

    2008-04-10

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

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

    E-Print Network [OSTI]

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

    1971-01-01

    , 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 components in the 9 Mo proton...

  6. C A T A L Y S TC A T A L Y S TC A T A L Y S T Supplier Diversity at PurdueSupplier Diversity at PurdueSupplier Diversity at Purdue....................................................2.2.2

    E-Print Network [OSTI]

    Pittendrigh, Barry

    1 C A T A L Y S TC A T A L Y S TC A T A L Y S T TTT HHH EEE Inside: Supplier Diversity at PurdueSupplier Diversity at PurdueSupplier Diversity at Purdue....................................................2 ...........................................3.3.3 Supplier Diversity Around IndianaSupplier Diversity Around IndianaSupplier Diversity Around

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

    E-Print Network [OSTI]

    Singer, Randall

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

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

    E-Print Network [OSTI]

    Boyer, Edmond

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

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

    DOE Patents [OSTI]

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

    1992-05-26

    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

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

    DOE Patents [OSTI]

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

    1984-01-27

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

  11. High-Tc Superconductivity in Entirely End-bonded Multi-walled nanotubes

    E-Print Network [OSTI]

    Maruyama, Shigeo

    High-Tc Superconductivity in Entirely End-bonded Multi-walled nanotubes Junji Haruyama 1 , Izumi the emergence of superconductivity, such as Tomonaga-Luttinger liquid states and Peierls transition. Carbon nanotubes (CNs) are one of the best candidates for investigating the possibility of 1D superconductivity

  12. Superconductivity-induced phonon anomalies in high-Tc superconductors: A Raman intensity study

    E-Print Network [OSTI]

    Sipe,J. E.

    Superconductivity-induced phonon anomalies in high-Tc superconductors: A Raman intensity study O. V of a number of Raman-active phonons below the superconducting transition temperature in YBa2Cu3O7 x , Bi2Sr2Ca to obtain information about the superconducting state.4 Several years ago, Friedl et al.5 ob- served

  13. Neutron resonance in high-Tc superconductors is not the particle O. Tchernyshyov,1,2

    E-Print Network [OSTI]

    Chubukov, Andrey V.

    Neutron resonance in high-Tc superconductors is not the particle O. Tchernyshyov,1,2 M. R. Norman,2 that the energy of the resonance always exceeds 2 , twice the maximum d-wave gap, therefore the neutron resonance that the particle can exist at higher energies and might be observed in neutron scattering around 100 meV. DOI: 10

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

    SciTech Connect (OSTI)

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

    2007-07-01

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

  15. cond-mat/99020674Feb1999 Spin dynamics in high-TC

    E-Print Network [OSTI]

    Aksay, Ilhan A.

    in the SC state, is accompanied by a broader contribution located around 30 meV which remains above TC the full energy and momentum dependences of the spin-spin correlation function. Re- cently, efforts have exp-it (1) Our results are then directly comparable with both Nuclear Magnetic Res

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

    E-Print Network [OSTI]

    Franz, Marcel

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

  17. Luminescence-Based Spectroelectrochemical Sensor for [Tc(dmpe)3]2+/+ (dmpe = 1,2-bis(dimethylphosphino)ethane) within a Charge-Selective Polymer Film

    SciTech Connect (OSTI)

    Chatterjee, Sayandev; Del Negro, Andrew S.; Edwards, Matthew K.; Bryan, Samuel A.; Kaval, Necati; Pantelic, Nebojsa; Morris, Laura K.; Heineman, W. R.; Seliskar, Carl J.

    2011-03-01

    A spectroelectrochemical sensor consisting of an indium tin oxide (ITO) optically transparent electrode (OTE) coated with a thin film of sulfonated polystyrene-blockpoly(ethylene-ran-butylene)-block-polystyrene (SSEBS) was developed for [Tc(dmpe)3]+.. [Tc(dmpe)3]+ preconcentrated by ion-exchange into the SSEBS film after 20 min exposure to aqueous [Tc(dmpe)3]+ solution, resulting in a 14-fold increase in cathodic peak current compared to a bare OTE. Colorless [Tc(dmpe)3]+ was reversibly oxidized to colored [Tc(dmpe)3]2+ by cyclic voltammetry. Detection of [Tc(dmpe)3]2+ was accomplished by electrochemically cycling the complex between non-emissive [Tc(dmpe)3]+ and emissive [Tc(dmpe)3]2+ and monitoring the modulated emission (?exc = 532 nm; ?em = 660 nm). The sensor gave a linear response over the range of 0.16 to 340.0 µM.

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

    E-Print Network [OSTI]

    P. A. Marchetti

    2014-11-07

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

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8, 2015 GATEWAY Takes 9.New Town Builders Denver,TC Legend

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

    SciTech Connect (OSTI)

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

    2011-09-15

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

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

    SciTech Connect (OSTI)

    Shuang Liu

    2012-10-24

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

  2. 15. Structure and Evolution of TC Warm Core Module Principal Investigators: Kelly Ryan, Klaus Dolling, and Jason Dunion

    E-Print Network [OSTI]

    Dolling, and Jason Dunion Significance and Background: Forecasting TC intensity continues-level divergence. In an analysis on the evolution of Hurricane Humberto, Dolling and Barnes (2012, 2014) discovered

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

    SciTech Connect (OSTI)

    Verghese, S.

    1993-05-01

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

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

    DOE Patents [OSTI]

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

    1998-01-01

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

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

    DOE Patents [OSTI]

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

    1998-09-01

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

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

    SciTech Connect (OSTI)

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

    2009-09-09

    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.

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

    E-Print Network [OSTI]

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

    2005-12-16

    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.

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

    SciTech Connect (OSTI)

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

    2014-09-30

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

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

    E-Print Network [OSTI]

    Boyer, Edmond

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

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

    SciTech Connect (OSTI)

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

    2013-12-05

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

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

    SciTech Connect (OSTI)

    Shen, Sui; Jacob, Rojymon; Bender, Luvenia W.; Duan, Jun; Spencer, Sharon A.

    2014-04-01

    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.

  12. Absence of Static Phase Separation in the High Tc Cuprate YBa2Cu3O6y J. Bobroff,1

    E-Print Network [OSTI]

    Paris-Sud 11, Université de

    Absence of Static Phase Separation in the High Tc Cuprate YBa2Cu3O6y J. Bobroff,1 H. Alloul,1 S out any large static phase separation between underdoped and optimally doped regions in contrast with the one observed by STM in Bi2212 and by NQR in LaSrCuO. This establishes that static electronic phase

  13. Nonmonotonic TC Trends in Bi-Based Ferroelectric Perovskite Solid Solutions Ilya Grinberg and Andrew M. Rappe

    E-Print Network [OSTI]

    Rappe, Andrew M.

    Nonmonotonic TC Trends in Bi-Based Ferroelectric Perovskite Solid Solutions Ilya Grinberg compositional trends in ferroelectric BiBO3-PbTiO3 solid solutions for a variety of cations on the perovskite B-based perovskite alloys [Grinberg et al., J. Appl. Phys. 98, 094111 (2005)]) permit accurate prediction of cation

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

    DOE Patents [OSTI]

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

    1988-07-05

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

  15. RETRIEVALS OF CLOUD OPTICAL DEPTH AND EFFECTIVE RADIUS FROM A THIN-CLOUD ROTATING SHADOWBAND RADIOMETER (TC-RSR)

    E-Print Network [OSTI]

    RETRIEVALS OF CLOUD OPTICAL DEPTH AND EFFECTIVE RADIUS FROM A THIN-CLOUD ROTATING SHADOWBAND Division Brookhaven National Laboratory U.S. Department of Energy Office of Science ABSTRACT A thin cloud cloud. We applied Min and Duan's retrieval algorithm to the field measurements of TC-RSR to derive cloud

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

    DOE Patents [OSTI]

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

    1998-09-01

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

  17. Nodal bilayer-splitting controlled by spin-orbit interactions in underdoped high-Tc cuprates

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

    Harrison, N.; Ramshaw, B. J.; Shekhter, A.

    2015-06-03

    The highest superconducting transition temperatures in the cuprates are achieved in bilayer and trilayer systems, highlighting the importance of interlayer interactions for high Tc. It has been argued that interlayer hybridization vanishes along the nodal directions by way of a specific pattern of orbital overlap. Recent quantum oscillation measurements in bilayer cuprates have provided evidence for a residual bilayer-splitting at the nodes that is sufficiently small to enable magnetic breakdown tunneling at the nodes. Here we show that several key features of the experimental data can be understood in terms of weak spin-orbit interactions naturally present in bilayer systems, whosemore »primary effect is to cause the magnetic breakdown to be accompanied by a spin flip. These features can now be understood to include the equidistant set of three quantum oscillation frequencies, the asymmetry of the quantum oscillation amplitudes in c-axis transport compared to ab-plane transport, and the anomalous magnetic field angle dependence of the amplitude of the side frequencies suggestive of small effective g-factors. We suggest that spin-orbit interactions in bilayer systems can further affect the structure of the nodal quasiparticle spectrum in the superconducting phase. PACS numbers: 71.45.Lr, 71.20.Ps, 71.18.+y« less

  18. Mass Measurements of Very Neutron-Deficient Mo and Tc Isotopes and Their Impact on rp Process Nucleosynthesis

    SciTech Connect (OSTI)

    Haettner, E.; Plass, W. R.; Scheidenberger, C.; Ackermann, D.; Block, M.; Eliseev, S.; Herfurth, F.; Hessberger, F. P.; Hofmann, S.; Kluge, H.-J.; Audi, G.; Blaum, K.; Ketter, J.; Fleckenstein, T.; Ketelaer, J.; Marx, G.; Schweikhard, L.; Mazzocco, M.; Novikov, Yu. N.; Vorobjev, G.

    2011-03-25

    The masses of ten proton-rich nuclides, including the N=Z+1 nuclides {sup 85}Mo and {sup 87}Tc, were measured with the Penning trap mass spectrometer SHIPTRAP. Compared to the Atomic Mass Evaluation 2003 a systematic shift of the mass surface by up to 1.6 MeV is observed causing significant abundance changes of the ashes of astrophysical x-ray bursts. Surprisingly low {alpha} separation energies for neutron-deficient Mo and Tc are found, making the formation of a ZrNb cycle in the rp process possible. Such a cycle would impose an upper temperature limit for the synthesis of elements beyond Nb in the rp process.

  19. Mass measurements of very neutron-deficient Mo and Tc isotopes and their impact on rp process nucleosynthesis

    E-Print Network [OSTI]

    E. Haettner; D. Ackermann; G. Audi; K. Blaum; M. Block; S. Eliseev; T. Fleckenstein; F. Herfurth; F. P. Heßberger; S. Hofmann; J. Ketelaer; J. Ketter; H. -J. Kluge; G. Marx; M. Mazzocco; Yu. N. Novikov; W. R. Plaß; S. Rahaman; T. Rauscher; D. Rodríguez; H. Schatz; C. Scheidenberger; L. Schweikhard; B. Sun; P. G. Thirolf; G. Vorobjev; M. Wang; C. Weber

    2011-03-28

    The masses of ten proton-rich nuclides, including the N=Z+1 nuclides 85-Mo and 87-Tc, were measured with the Penning trap mass spectrometer SHIPTRAP. Compared to the Atomic Mass Evaluation 2003 a systematic shift of the mass surface by up to 1.6 MeV is observed causing significant abundance changes of the ashes of astrophysical X-ray bursts. Surprisingly low alpha-separation energies for neutron-deficient Mo and Tc are found, making the formation of a ZrNb cycle in the rp process possible. Such a cycle would impose an upper temperature limit for the synthesis of elements beyond Nb in the rp process.

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

    SciTech Connect (OSTI)

    Verghese, S.

    1993-05-01

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

  1. Anisotropic Hc2 , thermodynamic and transport measurements, and pressure dependence of Tc in K2Cr3As3 single crystals

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

    Kong, Tai; Bud'ko, Sergey L.; Canfield, Paul C.

    2015-01-30

    We present a detailed study of single crystalline K2Cr3As3 and analyze its thermodynamic and transport properties, anisotropic Hc2(T), and initial pressure dependence of Tc. In zero field, the temperature-dependent resistivity is metallic. Deviation from a linear temperature dependence is evident below 100 K and a T3 dependence is roughly followed from just above Tc (~10K) to ~40K. Anisotropic Hc2(T) data were measured up to 140 kOe with field applied along and perpendicular to the rodlike crystals. For the applied field perpendicular to the rod, Hc2(T) is linear with a slope ~–70 kOe/K. For field applied along the rod, the slopemore »is about –120 kOe/K below 70 kOe. Above 70 kOe, the magnitude of the slope decreases to ~–70 kOe/K. The electronic specific heat coefficient ?, just above Tc, is 73 mJ/mol K2; the Debye temperature ?D is 220 K. As a result, the specific heat jump at the superconducting transition ?C~2.2?Tc. Finally, for hydrostatic pressures up to ~7 kbar, Tc decreases under pressure linearly at a rate of –0.034K/kbar.« less

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

    SciTech Connect (OSTI)

    Chung, Young-Jong; Jeong, Jae-Jun; Chang, Won-Pyo; Kim, Dong-Su

    1996-10-01

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

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

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

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

    2012-04-01

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

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

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

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

    2014-12-09

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

  5. Rare Decay of the Top t->c l lbar and Single Top Production at International Linear Collider

    E-Print Network [OSTI]

    Mariana Frank; Ismail Turan

    2006-10-17

    We perform a complete and detailed analysis of the flavor changing neutral current rare top quark decays t-> cl+l- and t->c nu_i bar nu_i at one-loop level in the Standard Model, Two Higgs Doublet Models (I and II) and in MSSM. The branching ratios are very small in all models, O(10^-14), except for the case of the unconstrained MSSM, where they can reach O(10^-6) for e+e- and nu_i bar nu_i, and O(10^-5) for tau+ tau-. This branching ratio is comparable to the ones for t-> c V, cH. We also study the production rates of single top and the forward-backward asymmetry in e+e- -> t cbar and comment on the observability of such a signal at the International Linear Collider.

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

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

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

    2014-12-01

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

  7. Attenuation compensation in TC-99M SPECT brain imaging: Use of attenuation maps derived from tranmission versus emission data

    SciTech Connect (OSTI)

    Pan, T.S.; Licho, R.; Penney, B.C. [Univ. of Massachusetts Mecical Center, Worcester, MA (United States)] [and others

    1994-05-01

    This study compares reconstructions of Tc-99m brain SPECT studies made using two methods of estimating the attenuation map: (1) transmission scanning, and (2) segmenting reconstructions of emission data and assigning attenuation coefficient values. A three-head SPECT system with fan beam collimators was used. Transmission scanning was performed using a line source at the focal line of a fan beam collimator right after the regular emission scan. The higher attenuation of the skull and the lower attenuation in the sinus cavities were identifiable despite the noise in the reconstructed transmission data due to: (1) the contamination of the transmission data by emission photons, (2) the maximum acquisition count rate imposed by the SPECT system, and (3) the clinical scanning time. Emission data were recorded using both photopeak and Compton scatter energy windows. Outlines of the head and the maxillary sinus could be obtained using only the Compton scatter reconstructions, whereas identifying the skull regions and the frontal sinus required the photopeak data as well. We placed appropriate linear attenuation coefficients in the soft tissue, bone, sinus and air regions (0.15,. 0.22, 0, and 0 cm{sup -1}) and blurred this attenuation map with a Gaussian kernel of about 0.2 cm standard deviation to obtain the attenuation map based on the emission data. Reconstructions were computed using the maximum likelihood expectation maximization algorithm with Siddon`s ray-tracing algorithm. Reconstructions based on the two attenuation maps were compared quantitatively on the patient data. The differences noted were quite small. These results imply that attenuation correction based on emission data alone may be adequate for Tc-99m SPECT brain imaging.

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

    E-Print Network [OSTI]

    Boyer, Edmond

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

  9. Five-fold way to new high Tc superconductors The Institute of Mathematical Sciences, C.I.T. Campus, Taramani, Chennai 600 113, India

    E-Print Network [OSTI]

    Giri, Ranjit K.

    of superconductivity. In turn, RVB theory provided a new hope for finding new superconductors through a novelFive-fold way to new high Tc superconductors G BASKARAN The Institute of Mathematical Sciences, C superconductivity in La2-xBaxCuO4 by Bednorz and Muller in 1986 was a breakthrough in the 75-year long search

  10. The synthesis and X-ray structural characterization of mer and fac isomers of the technetium(I) nitrosyl complex [TcCl2(NO)(PNPpr)

    E-Print Network [OSTI]

    Müller, Peter

    of hydroxyl- amine hydrochloride in methanol followed by a crystallization from dichloromethane under ether)pro- pyl]amine (PNPpr) to yield a mixture of the mer or fac isomers of [TcCl2(NO)(PNPpr)]. In acetonitrile with the linear nitrosyl ligand cis to the amine ligand; and the phosphine ligands arranged in a mutually trans

  11. America's Digital Divide Narrows http://www.businessweek.com/print/technology/content/mar2007/tc2007... 1 of 2 3/15/2007 7:47

    E-Print Network [OSTI]

    Knaust, Helmut

    America's Digital Divide Narrows http://www.businessweek.com/print/technology/content/mar2007/tc2007... 1 of 2 3/15/2007 7:47 TECHNOLOGY March 15, 2007, 8:14PM EST America's Digital Divide Narrows broadband connections to post blogs, watch and share videos on Google's (GOOG) YouTube, spruce up News Corp

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

    SciTech Connect (OSTI)

    Hulme, K. W.; Kappadath, S. C.

    2014-04-15

    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.

  13. Predictions regarding the supply of 99Mo and 99mTc when NRU ceases production in 2018

    E-Print Network [OSTI]

    Ross, C K

    2015-01-01

    The NRU reactor in Chalk River had been scheduled to stop producing medical isotopes by the end of 2016 but the Government of Canada recently announced that it will remain available to support isotope production until its operating license expires on 31 March, 2018. NRU has the capability of producing up to 80 % of the world's requirements for 99Mo but is presently producing less than 20 %. There are a number of initiatives underway, both within Canada and around the world, to find alternative ways of producing 99Mo or its daughter, 99mTc. We examine the status of the main proposals and conclude that it will be challenging for any of them to meet the required demand by the end of 2016. An additional year should be enough time for some of the proposals to complete the development of manufacturing facilities and achieve regulatory approval. It is likely that these operators will have enough production capability to make up for the shortfall when the NRU operating license expires.

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

    SciTech Connect (OSTI)

    Alaniz, Ariana J.; Delgado, Luc R.; Werbick, Brett M.; Hartmann, Thomas

    2013-07-01

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

  15. Electric field gradients in s-, p-, and d-metal diborides and the effect of pressure on the band structure and Tc in MgB2

    E-Print Network [OSTI]

    Medvedeva, Julia E.

    Arthur D. Little, Inc., Cambridge, Massachusetts 02140 Received 18 April 2001; published 27 December 2001Electric field gradients in s-, p-, and d-metal diborides and the effect of pressure on the band structure and Tc in MgB2 N. I. Medvedeva,1,2 A. L. Ivanovskii,1 J. E. Medvedeva,2,3 A. J. Freeman,2 and D. L

  16. Robot learning [TC Spotlight

    E-Print Network [OSTI]

    Tedrake, Russell Louis

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

  17. High Tc Superconductivity

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journalvivo Low-DoseOptionsthroughputEnergySalaryInnovation Portal by C.

  18. High-Tc Superconductor

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (JournalvivoHigh energy neutronHigh-Pressure MOF ResearchEnergyDonghui Lu,

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

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

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

    E-Print Network [OSTI]

    Mladen Georgiev

    2011-03-16

    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.

  1. Production of $^{93,94,95,96}$Tc through $^{7}$Li+$^{nat}$Zr and $^{9}$Be+$^{nat}$Y reactions: Measurement of excitation functions

    E-Print Network [OSTI]

    Moumita Maiti; Susanta Lahiri

    2009-02-25

    For the first time two separate production routes of Tc radionuclides have been studied bombarding $^{7}$Li on $^{nat}$Zr and $^{9}$Be on $^{89}$Y. Excitation functions of the evaporation residues produced in those reactions have been measured using stacked-foil technique followed by the $\\gamma$-spectrometric studies in the energy range 37-45 MeV and 30-48 MeV respectively. Measured excitation functions have been compared with those calculated using the nuclear reaction model codes PACE-II and ALICE91. Experimental results show good agreement with the theoretical predictions. Compound nuclear reaction is the key mechanism in producing evaporation residues.

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

    SciTech Connect (OSTI)

    Baer, Donald R.

    2012-09-01

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

  3. Journal of Superconductivity: Incorporating Novel Magnetism, Vol. 17, No. 1, February 2004 ( C 2004) Energy Scales in the High-Tc Superconductor YBa2Cu3O6+x

    E-Print Network [OSTI]

    Johnson, Peter D.

    Journal of Superconductivity: Incorporating Novel Magnetism, Vol. 17, No. 1, February 2004 ( C 2004) Energy Scales in the High-Tc Superconductor YBa2Cu3O6+x C. C. Homes,1 S. V. Dordevic,1 D. A. Bonn,2 R the evolution of the spectral weight N() in both the normal and superconducting states of optimally

  4. VOLUME 84, NUMBER 15 P H Y S I C A L R E V I E W L E T T E R S 10 APRIL 2000 Infrared Hall Effect in High-Tc Superconductors

    E-Print Network [OSTI]

    Drew, H. Dennis

    . Schmadel,1 G. S. Jenkins,1 H. D. Drew,1 R. Hughes,2 A. Dabkowski,2 J. S. Preston,2 and P.-J. Kung3 1 Center in High-Tc Superconductors: Evidence for Non-Fermi-Liquid Hall Scattering J. Cerne,1, * M. Grayson,1 D. C

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

    SciTech Connect (OSTI)

    Singh, Priya; Sarkar, Subir K.; Bandyopadhyay, Pradipta

    2014-07-07

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

  6. Re-processing the Hipparcos Transit Data and Intermediate Astrometric Data of spectroscopic binaries; 1, Ba, CH and Tc-poor S stars

    E-Print Network [OSTI]

    Pourbaix, D; Pourbaix, Dimitri; Jorissen, Alain

    2000-01-01

    The Intermediate Astrometric Data (IAD) and Transit Data (TD) made available by ESA after the Hipparcos mission make it possible to re-process the observations of any Hipparcos entry. This paper illustrates how TD and IAD may be used in conjunction with the orbital parameters of spectroscopic binaries to improve the astrometric parameters of binaries considered as single stars in the original reduction process. That approach has been applied to 81 dwarf barium stars, strong and mild barium stars, CH stars, and Tc-poor S stars for which spectroscopic orbits became available recently. Among these 81 systems, 23 yield reliable astrometric orbits, thus making it possible to evaluate on real data the impact of an unrecognized orbital motion on the proper motion (Wielen, 1997, A&A 325, 367). Comparison of the proper motion from the Hipparcos catalogue with that re-derived in the present work indicates that the former are indeed far off the present value for binaries with periods in the range 3 to about 8 years....

  7. TC_CLOUD_REGIME.cdr

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking With LivermoreSustainable Landmimic keySystemssystemso

  8. TU-F-12A-04: Differential Radiation Avoidance of Functional Liver Regions Defined by 99mTc-Sulfur Colloid SPECT/CT with Proton Therapy

    SciTech Connect (OSTI)

    Bowen, S; Miyaoka, R; Kinahan, P; Sandison, G; Vesselle, H; Nyflot, M; Apisarnthanarax, S; Saini, J; Wong, T

    2014-06-15

    Purpose: Radiotherapy for hepatocellular carcinoma patients is conventionally planned without consideration of spatial heterogeneity in hepatic function, which may increase risk of radiation-induced liver disease. Pencil beam scanning (PBS) proton radiotherapy (pRT) plans were generated to differentially decrease dose to functional liver volumes (FLV) defined on [{sup 99m}Tc]sulfur colloid (SC) SPECT/CT images (functional avoidance plans) and compared against conventional pRT plans. Methods: Three HCC patients underwent SC SPECT/CT scans for pRT planning acquired 15 min post injection over 24 min. Images were reconstructed with OSEM following scatter, collimator, and exhale CT attenuation correction. Functional liver volumes (FLV) were defined by liver:spleen uptake ratio thresholds (43% to 90% maximum). Planning objectives to FLV were based on mean SC SPECT uptake ratio relative to GTV-subtracted liver and inversely scaled to mean liver dose of 20 Gy. PTV target coverage (V{sub 95}) was matched between conventional and functional avoidance plans. PBS pRT plans were optimized in RayStation for single field uniform dose (SFUD) and systematically perturbed to verify robustness to uncertainty in range, setup, and motion. Relative differences in FLV DVH and target dose heterogeneity (D{sub 2}-D{sub 98})/D50 were assessed. Results: For similar liver dose between functional avoidance and conventional PBS pRT plans (D{sub mean}?5% difference, V{sub 18Gy}?1% difference), dose to functional liver volumes were lower in avoidance plans but varied in magnitude across patients (FLV{sub 70%max} D{sub mean}?26% difference, V{sub 18Gy}?8% difference). Higher PTV dose heterogeneity in avoidance plans was associated with lower functional liver dose, particularly for the largest lesion [(D{sub 2}-D{sub 98})/D{sub 50}=13%, FLV{sub 90%max}=50% difference]. Conclusion: Differential avoidance of functional liver regions defined on sulfur colloid SPECT/CT is feasible with proton therapy. The magnitude of benefit appears to be patient specific and dependent on tumor location, size, and proximity to functional volumes. Further investigation in a larger cohort of patients may validate the clinical utility of functional avoidance planning of HCC radiotherapy.

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

    E-Print Network [OSTI]

    Nguyen, Clark T.-C.

    reliable micromechanical switches," Pro- ceedings, 2008 IEEE Int. Frequency Control Symp., Honolulu, Hawaii Switches Yang Lin, Wei-Chang Li, Zeying Ren, and Clark T.-C. Nguyen Department of Electrical Engineering micromechanical switch with substantially higher switching speed, better reliability (even under hot switching

  10. LSH-TC V1.O

    Energy Science and Technology Software Center (OSTI)

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

  11. ACRONYMS AND ABBREVIATIONS TC -Training Circular

    E-Print Network [OSTI]

    Gellman, Andrew J.

    different metals. angle iron - An iron or steel structural member that has been cast, rolled, or bent iron. steel, or granite. The two principal faces are at right angles and may be slotted for holding the work or clamping to a table. annealing - The controlled heating and cooling of a metal to remove

  12. ARM - Campaign Instrument - tc-bc

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Comments? We would love to hear from you! Send us a note belowgovInstrumentssodaratngovInstrumentstc-bc Comments?

  13. TC&WM EIS Scoping

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking With LivermoreSustainable Landmimic keySystemssystemso TABLES OFcall

  14. ISO/TC 130/WG 3 N 991 ISO/TC 130/WG 3

    E-Print Network [OSTI]

    Zanibbi, Richard

    certification of printers to the proposed Process Agnostic Standard (ISO 15339) is planned for 2011. ­ Three of ISO 17021 (Conformity assessment ­ Requirements for bodies providing audit and certification of the certification process. · ISO 17021 establishes two sets of requirements for certifying bodies: ­ Credibility

  15. Micromechanical Circuits for Communication Transceivers Clark T.-C. Nguyen

    E-Print Network [OSTI]

    Nguyen, Clark T.-C.

    of Q versus power trade-offs. Micromechanical filters, mixer-filters, and switchable synthesiz- ers,000. In addition, LC resonator tanks with Q's greater than 30 are required by voltage-controlled oscillators (VCO of a communication sub-system is removed, the dynamic range requirement on the subsequent IF amplifier, IQ mixer

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

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

    Kristin Persson

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

  17. One of Possible Applications of High-Tc Superconductors

    E-Print Network [OSTI]

    A. V. Nikulov

    2001-06-06

    Possible application of a result contradicting to the second law of thermodynamics is announced. According to this result the chaotic energy of thermal fluctuation can be transformed in electric energy of direct current in an inhomogeneous superconducting ring. Although the power of this transformation is very weak this effect has optimistic perspective of wide application because useful energy can be obtained from heat energy in the equilibrium state. It is explain why the second law can be broken in some quantum systems. In the last years some authors have concluded almost at once on violation of the second law in different quantum systems: A.E.Allahverdyan and Th.M.Nieuwenhuizen, PRL 85, 1799 (2000); cond-mat/0011389; V.Capec and J.Bok Czech. J. of Phys. 49, 1645 (1999); cond-mat/0012056; Physica A 290, 379 (2001); D. Sheehan, Phys. Plasmas 2 (6), 1893 (1995); Phys. Rev.E 61, 4662 (2000); P. Weiss, Science News, 158, 234 (2000).

  18. A Novel Class of High-TC Ferromagnetic Semiconductors

    E-Print Network [OSTI]

    Shlyk, L. V.

    2008-01-01

    EFERENCES D. Grundler, “Spintronics”, Physics World, April,Flatté and N. Samarth, “Spintronics”, Scientific American,O 11 : a new paradigm for spintronics”, Adv. Mat. , vol. 20,

  19. A Novel Class of High-TC Ferromagnetic Semiconductors

    E-Print Network [OSTI]

    Shlyk, L. V.

    2008-01-01

    are properties well suited to spintronic applications. X-rayproperties well suited to spintronic applications [14-16]. Awhich is detrimental to spintronic applications since a

  20. Response of High-Tc Superconductor Metamaterials to High Intensity...

    Office of Scientific and Technical Information (OSTI)

    and Electromagnetic Crystal Structures ; 2012-06-03 - 2012-06-08 ; Santa Fe, New Mexico, United States Research Org: Los Alamos National Laboratory (LANL) Sponsoring Org:...

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

    E-Print Network [OSTI]

    Hazen, Terry

    was designed to demonstrate in situ bioremediation of ground water and sediment contaminated with chlorinated, NC 28144 Abstract Bioremediation has proven to be one of the most cost effective and environmentally tetrachloroethylene to trichloroethylene. Sediment, water, and soil gas samples were taken before, during and after

  2. Dilepton production spectrum above Tc with a lattice quark propagator

    E-Print Network [OSTI]

    Taekwang Kim; Masayuki Asakawa; Masakiyo Kitazawa

    2015-05-27

    The dilepton production rate from the deconfined medium is analyzed with the photon self-energies constructed from quark propagators obtained by lattice numerical simulation for two values of temperature $T=1.5T_{\\rm c}$ and $3T_{\\rm c}$ above the critical temperature $T_{\\rm c}$. The photon self-energy is calculated by the Schwinger-Dyson equation with the lattice quark propagtor and a vertex function determined so as to satisfy the Ward-Takahashi identity. The obtained dilepton production rate at zero momentum exhibits divergences reflecting van Hove singularity, and is significantly enhanced around $\\omega\\simeq T$ compared with the rate obtained by the perturbative analysis.

  3. Melt-spin processing of high {Tc} oxide superconductors

    SciTech Connect (OSTI)

    Folkerts, T.J.; Wu, Hengning; Yoo, S.I.; Merkle, B.D.; Arrasmith, S.R.; Dennis, K.W.; Kramer, M.J.; McCallum, R.W.

    1993-10-01

    Containerless techniques offer distinct advantages for the melt processing of oxide superconductors. The majority of these materials form liquids which are highly reactive with standard crucible materials such as Al{sub 2}O{sub 3} and Pt, resulting in non-negligible contamination. We have developed a containerless melt-spin processing technique where in 50--400 {mu}m particles of REBa{sub 2}Cu{sub 3}O{sub 7-x} high temperature oxide superconductors are melted in free fall through a vertical tube furnace and quenched onto a copper wheel. Previously this method has been successful in producing glasses of NdBa{sub 2}Cu{sub 3}O{sub 7-x} and GdBa{sub 2}Cu{sub 3}O{sub 7-x}. In this report we discuss the results for both stoichiometric and non-stoichiometric YBa{sub 2}Cu{sub 3}O{sub 7-x} (Y123). Thermal, microstructural, and superconducting characterization of both the as-quenched and the annealed materials will be presented.

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

    ScienceCinema (OSTI)

    None

    2013-05-28

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

  5. LD Vehicles AFDC 11 25 13 TC.xlsx

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Model Year 2014: Alternative Fuel and Advanced Technology Vehicles 1 (Updated 11252013) MY FuelPowertrain Type Make Model Vehicle Type Engine SizeCylinders Transmission...

  6. A Novel Class of High-TC Ferromagnetic Semiconductors

    SciTech Connect (OSTI)

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

    2008-05-30

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

  7. AC susceptibility studies of high-[Tc] superconductors

    SciTech Connect (OSTI)

    Lee, Chang-Young.

    1993-01-01

    In this thesis, the authors studied physical properties of various high-T[sub c] superconductors by means of the ac susceptibility technique. They present the physics of ac susceptibility from first principles without relying on any specific models. From this, they can explain some fundamental but interesting features of experimental results such as symmetry properties of the ac susceptibility and its harmonics with respect to dc magnetic field. By measuring ac hysteresis they were able to obtain lower critical fields which were compared with some theoretical predictions. They found that the results were consistent with the BCS theory with modified gap parameter. By measuring ac hysteresis of granular samples at ultra low magnetic fields, they revealed the Meissner state and obtained Josephson lower critical fields, which was also found to be in consistence with the BCS theory. They studied the critical state models in detail and obtained some useful equations which were used in analyzing magnetic field dependence of ac susceptibility. By comparing the equations with experimental results, they were able to perform quantitative analysis of some important physical parameters such as critical current density. From numerical calculations of ac susceptibility with the parameter values obtained by this procedure, they confirmed good agreement of theory with experimental data. They incorporated the theory of flux creep into the equation governing the steady state flux motion, from which they were able to explain the shift of ac susceptibility with operating frequency toward high temperatures. Through this study, quantitative results on the activation energy were obtained.

  8. Response of High-Tc Superconductor Metamaterials to High Intensity...

    Office of Scientific and Technical Information (OSTI)

    Laboratory (LANL) LDRD United States 2012-08-13 English Conference Conference: SPIE Optics+Photonics ; 2012-08-12 - 2012-08-16 ; San Diego, California, United States Medium: ED...

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

    E-Print Network [OSTI]

    B. Lucini; M. Teper; U. Wenger

    2003-09-02

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

  10. Ising Spectroscopy II: Particles and poles at T>Tc

    E-Print Network [OSTI]

    Alexander Zamolodchikov

    2013-10-17

    I discuss particle content of the Ising field theory (the scaling limit of the Ising model in a magnetic field), in particular the evolution of its mass spectrum under the change of the scaling parameter. I consider both real and pure imaginary magnetic field. Here I address the high-temperature regime, where the spectrum of stable particles is relatively simple (there are from one to three particles, depending on the parameter). My goal is to understand analytic continuations of the masses to the domain of the parameter where they no longer exist as the stable particles. I use the natural tool -- the $2\\to 2$ elastic scattering amplitude, with its poles associated with the stable particles, virtual and resonance states in a standard manner. Concentrating attention on the "real" poles (those corresponding to stable and virtual states) I propose a scenario on how the pattern of the poles evolves from the integrable point $T=T_c,\\ H\

  11. Bridging the Gaps of High-Tc Superconductor

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L OBransen Plasma Asher An O2 RFand

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shines light on77 PAGE OF PAGESpersonal CERTIFIED MAIL Fuel3SProposal: GFinal56

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeedingProgramExemptionsProtein Dynamics HitPseudogap and Superconducting Gap

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeedingProgramExemptionsProtein Dynamics HitPseudogap and Superconducting

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeedingProgramExemptionsProtein Dynamics HitPseudogap and

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

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EISTJThin Film SolarTown ofTransportToolkitTrenton, Michigan:I

  17. Bounding the Pseudogap in Cuprate High-TC Superconductors (Technical

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing Bacteria (Technical Report) | SciTechReport)(TechnicalArticle) |BoundingReport) |

  18. Bounding the Pseudogap in Cuprate High-TC Superconductors (Technical

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing Bacteria (Technical Report) | SciTechReport)(TechnicalArticle) |BoundingReport)

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II) by Carbon-RichProton Delivery and Removal in [Ni(P R 2 N R' 2Pseudogaps,

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

    E-Print Network [OSTI]

    Zeldov, Eli

    1996-01-01

    , IL 60115, USA Department of Condensed Matter Physics, The Weizmann Institute of Science, 76100]. This interesting result is in * On leave from Institute of Low Temperature and Structure Research, Polish Academy

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

    SciTech Connect (OSTI)

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

    1994-12-01

    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.

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

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergy HeadquartersFuel Cycle | Department| Department of EnergyNM,

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

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

    spectrometer notch-filter system. The Raman spectra were recorded in parallel using a Peltier cooled CCD detector (McKeown et al. 2007). 3. Results 3.1 Technetium XANES and EXAFS...

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

    SciTech Connect (OSTI)

    none,

    2014-09-01

    This house was the Grand Winner in the Affordable Builder category of the 2014 Housing Innovation Awards, and has 6-inch SIP walls, a 10-inch structural insulated panel roof, and insulating concrete forms foundation walls with R-20 high-density rigid EPS foam under the slab.A single ductless heat pump heats and cools the home, which also gets passive solar heating from south-facing triple-pane windows that heat a concrete slab floor plus a connected greenhouse.

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

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

    Kristin Persson

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

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

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

    Kristin Persson

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

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

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

    Kristin Persson

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

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

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

    Kristin Persson

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

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

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

    Kristin Persson

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

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

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

    Kristin Persson

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

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

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

    Kristin Persson

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

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

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

    Kristin Persson

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

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

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

    Kristin Persson

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

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

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

    a modern two-story with a mother-in-law suite and views of Lake Washington from the roof-top deck. Clifton calls the home a positive energy home, one that produces more energy...

  15. DOE ZERH Case Study: TC Legend Homes, Bellingham Power House, Bellingham, WA

    SciTech Connect (OSTI)

    none,

    2015-09-01

    Case study of a DOE 2015 Housing Innovation Award winning custom home in the marine climate that got HERS 34 without PV or HERS -12 with PV, with 6” SIP walls and 10” SIP roof; R-28 ICF around slab, R-20 rigid foam under slab; radiant floor heat and passive design; air-to-water heat pump COP 4.4; HRV; earth tube ventilation; triple-pane windows, 100% LED.

  16. Reactive nanophase oxide additions to melt-processed high-{Tc} superconductors

    SciTech Connect (OSTI)

    Goretta, K.C.; Brandel, B.P.; Lanagan, M.T.; Hu, J.; Miller, D.J.; Sengupta, S.; Parker, J.C.; Ali, M.N.; Chen, Nan

    1994-10-01

    Nanophase TiO{sub 2} and Al{sub 2}O{sub 3} powders were synthesized by a vapor-phase process and mechanically mixed with stoichiometric YBa{sub 2}Cu{sub 3}O{sub x} and TlBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub x} powders in 20 mole % concentrations. Pellets produced from powders with and without nanophase oxides were heated in air or O{sub 2} above the peritectic melt temperature and slow-cooled. At 4.2 K, the intragranular critical current density (J{sub c}) increased dramatically with the oxide additions. At 35--50 K, effects of the oxide additions were positive, but less pronounced. At 77 K, the additions decreased J{sub c}, probably because of inducing a depresion of the transition temperature.

  17. SYMPOSIUM PAPER TC7.1 -DOMESTIC REFRIGERATORS AND FOOD FREEZERS

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    . Arthur D. Little, Inc. was the prime contractor for the project, with Amana serving as a sub using a computer program developed by Arthur D. Little, Inc. for Phase I of this project.2

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

    SciTech Connect (OSTI)

    none,

    2013-09-01

    This house incorporates slab-on-grade, EPS roof, and radiant heating with an air-to-water heat pump that also preheats domestic hot water. Without counting in the solar panels, the home earns a home energy rating system (HERS) score of 37, with projected utility bills of about $740 a year. With the 6.4-kW photovoltaic power system installed on the roof, the home’s HERS scores drops to -1 and utility bills for the all-electric home drop to zero. This home was awarded a 2013 Housing Innovation Award in the affordable builder category.

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

    DOE Patents [OSTI]

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

    1996-07-30

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

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

    E-Print Network [OSTI]

    Zbasnik, J.

    2011-01-01

    helium tank. T9 measures the temperature of the shield. Thetank so that they can be changed when the vacunm vessel and super insulated shield

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

    E-Print Network [OSTI]

    Collins, Gary S.

    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

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

    E-Print Network [OSTI]

    Cutting, R. S.

    2010-01-01

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

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

    SciTech Connect (OSTI)

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

    2015-01-01

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

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

    E-Print Network [OSTI]

    Qiu, Qinru

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

  5. Materials Data on TcH4NO4 (SG:88) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02

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

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

    SciTech Connect (OSTI)

    Chen, Y.

    2010-05-03

    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.

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

    E-Print Network [OSTI]

    Dorlas, Teunis C.

    > Nx k g and 1 (k) i = 1fE (k) i 6 Nx k g. We also de#12;ne GN and #22; GN as GN (x 1 ; : : : ; xn ) = Z Nx1 1 #1; #1; #1; Z Nxn 1 #26; (1) N (E 1 ) #1; #1; #1; #26; (n) N (En ) dEn #1; #1; #1; dE 1 ; GN (x 1 ; : : : ; xn ) := Z +1 Nx1 #1; #1; #1; Z +1 Nxn #26; (1) N (E 1 ) #1; #1; #1; #26; (n) N (En ) d

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

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

    1 These nuclear wastes date from the Manhattan Project of World War II and from plutonium production during the Cold War. The DOE plans to separate highly radioactive wastes...

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

    DOE Patents [OSTI]

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

    1997-06-24

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

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

    Energy Savers [EERE]

    slab, R-20 rigid foam under slab; radiant floor heat and passive design; air-to-water heat pump COP 4.4; HRV; earth tube ventilation; triple-pane windows, 100% LED. DOE Zero...

  11. 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...

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

    Energy Savers [EERE]

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

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

    E-Print Network [OSTI]

    described a rocket-like fireball with an abrupt ending. Sensors aboard US govern- ment satellites first span- ning 3.5 s, with most of the radiated energy in the middle 1-s pulse at aninferred altitude Meteorological Office10 wind model data and ground-based images of the lingering train11 taken from Wadi Halfa

  14. Materials Data on CsTcO4 (SG:62) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02

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

  15. “Nodal Gap” induced by the incommensurate diagonal spin density modulation in underdoped high- Tc superconductors

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

    Zhou, Tao; Gao, Yi; Zhu, Jian -Xin

    2015-03-07

    Recently it was revealed that the whole Fermi surface is fully gapped for several families of underdoped cuprates. The existence of the finite energy gap along the d-wave nodal lines (nodal gap) contrasts the common understanding of the d-wave pairing symmetry, which challenges the present theories for the high-Tcsuperconductors. Here we propose that the incommensurate diagonal spin-density-wave order can account for the above experimental observation. The Fermi surface and the local density of states are also studied. Our results are in good agreement with many important experiments in high-Tcsuperconductors.

  16. Materials Data on Co2TcO4 (SG:74) by Materials Project

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

    Kristin Persson

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

  17. Materials Data on Co2TcO4 (SG:74) by Materials Project

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

    Kristin Persson

    2015-05-16

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

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

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainable Urban TransportFortistarFuelCellsEtc JumpInformation Funda o Parque

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

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report:Speeding access toSmall ReactorRaymond Davis, Jr.,Workshop

  20. DOE Tour of Zero: Bellingham Power House by TC Legend Homes | Department of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i pStateDOE FederalTheof Energy hasProposals (RFP)

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i pStateDOE FederalTheofHeyeck, AEP,Perrin's Row, WheatSantaHouse,

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i pStateDOE FederalTheofHeyeck, AEP,Perrin's Row,

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i pStateDOE FederalTheofHeyeck, AEP,Perrin's Row,| Department of

  4. HIPed Tailored Ceramic Waste Forms for the Immobilization of Cs, Sr and Tc

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journal Article)lasers (Journal Article) |different scalesTHE FIRST

  5. HIPed Tailored Ceramic Waste Forms for the Immobilization of Cs, Sr and Tc

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journal Article)lasers (Journal Article) |different scalesTHE FIRST(Conference) |

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyThe U.S.Lacledeutilities. The Economics ofConduct Cross-SiteDepartment

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

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeedingConnect(Conference)Factory: Linearcuprate| SciTech

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

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeedingConnect(Conference)Factory: Linearcuprate| SciTechRadiation

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

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTech ConnectSpeedingConnect(Conference)Factory: Linearcuprate|

  10. Universal versus Materials-Dependent Two-Gap Behaviour of the High-Tc

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory of rare Kaon and(Conference)Connecteffectcritical points (Journal

  11. Universal versus Materials-Dependent Two-Gap Behaviour of the High-Tc

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory of rare Kaon and(Conference)Connecteffectcritical points (JournalCuprate

  12. DOE Tour of Zero Floorplans: Bellingham Power House by TC Legend Homes |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8, 2015 GATEWAY Takes onandField |of Energy Bates Avenue

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8, 2015 GATEWAY Takes 9.New Town BuildersHealthyNear Zero

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8, 2015 GATEWAY Takes 9.New TownHome Serenbe, GA DOEZERO

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8, 2015 GATEWAY Takes 9.NewExtreme Homes &Sterling

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking WithTelecentricN A 035(92/02) nerg *415,Rates > MeetingsRates >

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum12,ExecutiveFinancingR Walls - Building America Top Innovation High-R Walls

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergyPlan | Department ofSUPPLEMENTSwitzerland|of Energy T-685:

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACT EVALUATION PLANIsProcess Relevant to Carbon Sequestration

  20. DOE Tour of Zero: Bellingham Power House by TC Legend Homes | Department of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley Ann JacksonDepartment of Energy Facilities By E-mail:Carly Wilkins(Part 1)DOE logo,OnAddthis

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley Ann JacksonDepartment ofOffice of Headquarters1,784-square-foot zero energyDepartment ofCustom

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley Ann JacksonDepartment ofOffice of Headquarters1,784-square-foot zeroKBDepartment

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley Ann JacksonDepartment ofOffice of Headquarters1,784-square-foot zeroKBDepartment| Departmentof

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

    E-Print Network [OSTI]

    Pittendrigh, Barry

    Connection............333 Women Owned Logo at WalmartWomen Owned Logo at WalmartWomen Owned Logo at Walmart Diversity Development SUMMER 2 0 1 4SUMMER 2 0 1 4SUMMER 2 0 1 4 Walmart to Place Women-Owned Business Logo International and Walmart, was de- signed to make more people aware of the high-quality, unique products

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

    DOE Patents [OSTI]

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

    1998-07-28

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

  6. Analytical description of the Jc(B) dependence of high Tc superconducting thin films in small perpendicular fields

    SciTech Connect (OSTI)

    Hanisch, Jens; Grilli, Francesco; Holzapfel, Bernhard

    2008-01-01

    The field dependencies of J{sub c} of YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} based high-temperature superconducting thin films are measured in fine steps for B||c in a wide temperature range. It is found that J{sub c}(B) of all samples can be described by a generalization of Kim's critical state model with two additional variables. At very low fields, a plateau of constant J{sub c} is observed, for which two possible reasons are discussed - self-field effects and a strong single-vortex pinning mechanism. Around 1 T we identified a small 'peak' which may be responsible for ultralow experimental {alpha} values in high-quality samples.

  7. S99STATE OF THE CLIMATE IN 2013 |JULY 2014 traveled east towards the waters north of Samoa. TC

    E-Print Network [OSTI]

    . Significant impacts from waves and winds in Cairns included downed power lines and damage to coastal hPa). Upon reaching Cat- egory 4 status on 9 March over the eastern Coral Sea, wave action cyclone heat potential--G. J. Goni, J. A. Knaff, and I-I Lin This section summarizes the previously

  8. OF PhrS1CS GR.-\\DFATESAT Bc\\;-;TC~ C;;I~'E~SIn DEC. 5, 1981

    E-Print Network [OSTI]

    &D'in Tape) Robert Cohen (History) Glenn Plimpton (Radome design) George Zimmerman (r. U. Physics Ove rvf (Foundations of Quantum & Stat. Nech.) Dean Edmonds (Commercial lasers) Social Hour 8:45 9.' r:;· LJ 9: 15 - 9 G. Greg Houd Philip Huddleston Bror Hultgren Ed McGowan Richard Merian Dick Picard* Glenn Plirnpton

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

    SciTech Connect (OSTI)

    Summers, W

    2006-12-20

    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.

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

    E-Print Network [OSTI]

    Tian De Cao

    2009-05-05

    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.

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

    E-Print Network [OSTI]

    Valero-Cuevas, Francisco

    of the grid depends very #12;much on the reliability of these transmission lines. So if there is anything wrong with the transmission lines, the reliability of the grid goes down. So, therefore, what has, but as you know, the electric power system is aging and the demands for power is increasing because

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

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    significant environmental correlates with NIS impact and response to treatment will help guide weed management Community and Environmental Covariates of Non-Indigenous Plant Impacts Tanya C. Skurski, Lisa J. Rew, Bruce. If a significant relationship exists between environmental variables or biotic conditions and impact, knowledge

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

    E-Print Network [OSTI]

    Nadgorny, Boris

    writing. The circuit includes two dc/SFQ converters, two Josephson transmission lines, a complete RS SFQ. Single-layer YBCO thin-film circuit consisting of two dc/SFQ con- verters, two Josephson transmission flip-flop, and an SFQ/dc converter readout SQUID . Low-frequency testing has shown that the dc

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

    E-Print Network [OSTI]

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

    1973-01-01

    by the frequency dependence of the product of the electron- phonon coupling constant and the phonon density of states, n2(&u)E(cu). Differences between the tran- sition temperatures of thin films and that of the bulk metal are often explained in terms of a modi.... III. RESULTS As indicated in Fig. 2 the noble-gas overlayers depress the transition temperature of thin Sn, Al, and Tl films. Associated with this decrease in T, was a small increase in the residual resistance. The fractional change in residual...

  15. Partnership for AiR Transportation Noise and Emission Reduction An FAA/NASA/TC-sponsored Center of Excellence

    E-Print Network [OSTI]

    emissions of CO2, hydrocarbons, NOx, SOx and particulate matter ­ An estimated 6 million tons of CO2, 45 emissions from these flights [ASPM, ICAO data] #12;5 NOx performance · Percentage of (domestic) departures from the top 20 airports vs. percentage of taxi-out NOx emissions from these flights [ASPM, ICAO data

  16. Plasma sheet oscillations and their relation to substorm development: Cluster and double star TC1 case study

    E-Print Network [OSTI]

    California at Berkeley, University of

    of kink-like plasma sheet waves (Runov et al., 2005) suggests the generation mechanism of a flow, Austria b Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Yoshinodai 3-1-1, Sagamihara 229-8510, Japan c Tokyo Institute of Technology, Ookayama 2-12-1, Meguro, Tokyo 152-8550, Japan d

  17. Z .Physica C 320 1999 101114 Formation of the low-field peak in magnetization loops of high-Tc

    E-Print Network [OSTI]

    Johansen, Tom Henning

    Z .Physica C 320 1999 101­114 Formation of the low-field peak in magnetization loops of high form 19 April 1999; accepted 24 May 1999 Abstract Z . Z .The positions of the central low-field peak of the central peak with other ``peak effects'' observed in MHLs. q 1999 Published by Elsevier Science B.V. All

  18. DIPLOMADO EN NUTRICIN Y DIETTICA (COD. 280) 60 52 ING.TC.INDUSTRIAL.ESP.: QUMICA INDUSTRIAL (COD. 216) 42 26

    E-Print Network [OSTI]

    Autonoma de Madrid, Universidad

    9 LICENCIADO EN HISTORIA (COD. 31) 114 49 LICENCIADO EN HISTORIA DEL ARTE (2000) (COD. 248) 96 75 ESCUELA POLITÉCNICA SUPERIOR TOTAL GRADUADOS UAM EN CENTROS PROPIOS ( 2008/2009) DERECHO TOTAL FORMACIÓN DE PROFESORADO Y DE LA EDUCACIÓN TOTAL CIENCIAS TOTAL FILOSOFÍA Y LETRAS TOTAL ESCUELA POLITÉCNICA

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

    E-Print Network [OSTI]

    Liu, Hong-Xia

    1988-01-01

    of the high T, Y-Ba-Cu-0 system . . . . . 1. 2. A review of the spectroscopic study of the Y-Ba-Cu-0 system. 1. 3. Properties of metal oxide surfaces. 1. 4. Influence of the effective escape depth of the electrons on surface studies . 1. 5. Objectives... extensive in the area of the high T, Y-Ba-Cu-0 system. 1. 1. Properties of the high T, Y-Ba-Cu-0 system The high T, Y-Ba-Cu-0 system is the single phase compound YBagCu309 8 with 5=2 (Cava et al 1987). It is an orthorhombically distorted perovskite...

  20. Thermodynamic and nonstoichiometric behavior of promising Hi-Tc cuprate systems via EMF measurements : a short review.

    SciTech Connect (OSTI)

    Tetenbaum, M.

    1999-02-24

    Electromotive force (EMF) measurements of oxygen fugacities as a function of stoichiometry have been made on the YBa{sub 2}Cu{sub 3}O{sub x}, GdBa{sub 2}Cu{sub 3}O{sub x}, NdBa{sub 2}Cu{sub 3}O{sub x} and bismuth cuprate systems in the temperature range {approximately}400-750 C by means of an oxygen titration technique with an yttria-stabilized zirconia electrolyte. The shapes of the 400 C isotherms as a function of oxygen stoichiometry for the Gd and Nd cuprate systems suggest the presence of miscibility gaps at values of x that are higher than those in the YBa{sub 2}Cu{sub 3}O{sub x} system. For a given oxygen stoichiometry, oxygen partial pressures above GdBa{sub 2}Cu{sub 3}O{sub x} and NdBa{sub 2}Cu{sub 3}O{sub x} are higher (above x=6.5) than that for the promising YBa{sub 2}Cu{sub 3}O{sub x} system. A thermodynamic assessment and intercomparison of our partial pressure measurements with the results of related measurements will be presented.

  1. Unconventional energetics of the pseudogap state and superconducting state in high-Tc cuprates D. N. Basov,1

    E-Print Network [OSTI]

    Johnson, Peter D.

    the increase of the kinetic energy.9,10 No- tably, in metallic superconductors the pairing of charge car- riers of Physics, Brookhaven National Laboratory, Upton, New York 11973-5000 3 Department of Physics, McMaster University, Hamilton, Ontario, Canada L8S 4M1 4 Bell Laboratories, Lucent Technologies, Murray Hill, New

  2. HIA 2015 DOE Zero Energy Ready Home Case Study: TC Legend Homes, Bellingham Power House, Bellingham, WA

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum12,ExecutiveFinancing Programs |Reference StationFranklinHammer andVia

  3. LaL2SrL8Mn207BelowTc : Exchange StricthR ECEI VED

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousand CubicResource andfirstDevice UW Madisonof High-Beta088-00-105

  4. Nonlinear seismic response analysis of steel-concrete composite frames

    E-Print Network [OSTI]

    Barbato, Michele

    2008-01-01

    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)

  5. Algoritmos y Estructuras de Datos --Ing. Tc. en Informtica de Sistemas --Primera Parte. Examen. 2 de Septiembre de 2.004 Hoja 1/1

    E-Print Network [OSTI]

    Giménez, Domingo

    estamos trabajando con los tipos de datos abstractos ArbolTrie y NodoTrie, con operaciones como las vistas necesarias. 3. (2,75 puntos) En el algoritmo para encontrar el flujo máximo en un grafo dirigido con pesos. Suponer que el grafo del problema, G, y el grafo de flujos resultantes, F, se almacena en sendas matrices

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

    E-Print Network [OSTI]

    Perrimon, Norbert

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

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

    E-Print Network [OSTI]

    He, R.-H.

    2012-01-01

    the pseudogap in cuprate superconductors. Science 314, 1914-symmetry in cuprate superconductors. Rev. Mod. Phys. 72,stripes in copper oxide superconductors. Nature 429, 534-

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

    E-Print Network [OSTI]

    Zhao, Hongwei

    2005-08-29

    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 ...

  9. Self-normalizing methods of photoelectron holography applied to As/Si,,111... D.-A. Luh, T. Miller, and T.-C. Chiang

    E-Print Network [OSTI]

    Luh, Dah-An

    of surface contaminants. This may involve treatment and repositioning of the sample. All of these can affect in- tensity measurements, and proper normalization must be car- ried out in order to correlate

  10. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 7, No. 2, JUNE 1997 3564 Fabrication of High-Tc Hot-Electron Bolometric Mixers for Terahertz

    E-Print Network [OSTI]

    Burns, Michael J.

    receivers based on superconductor-insulator- superconductor (SIS) junctions are used in submillimeterIEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 7, No. 2, JUNE 1997 3564 Fabrication of High Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA Abstract Superconducting

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

    SciTech Connect (OSTI)

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

    2006-06-01

    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.

  12. STEM Teachers' Collaborative What is it? STEM-TC is an interdisciplinary effort across the University to coordinate and enhance our

    E-Print Network [OSTI]

    degree options in STEM and other areas of critical teacher shortage-line Masters degree options in STEM, including options to concentrate degree electives professional development curricula, real-world research experiences for teachers

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

    E-Print Network [OSTI]

    Dizon, Jonathan Reyes

    2009-04-28

    , on the other hand, focused early efforts on using their coaxial resonator-type probe to image a sample?s ferroelectric domains by measuring the variations in the dielectric constant [Gao 1998]. Periodic ferroelectric domain structures in crystals have found..., on the other hand, focused early efforts on using their coaxial resonator-type probe to image a sample?s ferroelectric domains by measuring the variations in the dielectric constant [Gao 1998]. Periodic ferroelectric domain structures in crystals have found...

  14. Structure and Polarization in the High Tc Ferroelectric BiZn; TiO3-PbTiO3 Solid Solutions Ilya Grinberg,1

    E-Print Network [OSTI]

    Rappe, Andrew M.

    is the current material of choice for piezoelectric applications, due to its high piezoelectric performance-generation piezoelectric and nonvolatile memory applications. In particular, the rate of increase in both properties as BZT.84.Dy Because of their importance in ferroelectric and piezo- electric applications

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

    E-Print Network [OSTI]

    Kimura, Hikari

    2009-01-01

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

  16. S.N. Gerasimov, P. Abreu, M. Baruzzo, V. Drozdov, A. Dvornova, J. Havlicek, T.C. Hender, O. Hronova, U. Kruezi, X. Li, T. Markovic, R. Pnek,

    E-Print Network [OSTI]

    , Culham Science Centre, Abingdon OX14 3DB, UK 2 Asociacion CIEMAT, Madrid, Spain 3 Association VR, Fusion

  17. To appear in the Proceedings of INTERACT 2003: Ninth IFIP TC 13 Int'l. Conf. On Human-Computer Interaction Reactive Information Displays

    E-Print Network [OSTI]

    Narayanan, N. Hari

    to a user's attention, to present the right information at the right place and in the right time, constitute information in the right place and at the right time. We term such interfaces Reactive Information Displays-Computer Interaction Reactive Information Displays N. Hari Narayanan & Daesub Yoon Intelligent and Interactive Systems

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

    ScienceCinema (OSTI)

    Marken, Ken [Superconductivity Technology Center, Los Alamos, New Mexico, United States

    2010-01-08

    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.

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

    E-Print Network [OSTI]

    Nguyen, Clark T.-C.

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

  20. Phonon density of states and the search for a resonance mode in LaFeAsO0.85F0.15 (Tc=26 K)

    E-Print Network [OSTI]

    Ryan, Dominic

    Beam Centre, Chalk River, ON, K0J 1J0, Canada 2 Physics Department, McGill University, Montreal, QC, H3

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

    E-Print Network [OSTI]

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

    2009-01-01

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

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

    SciTech Connect (OSTI)

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

    2012-01-01

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

  3. High-cycle fatigue of Ti6Al4V R . O. RI TC H I E, D. L . DAV I DS ON 1

    E-Print Network [OSTI]

    Ritchie, Robert

    conditions is a major concern with respect to the structural integrity of turbine-engine components). An extensive databaseHigh-cycle fatigue (HCF) has been identified as one of the prime causes of turbine-engine the cracking initiates from small defects often tative of turbine-engine HCF. Furthermore, except under

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

    E-Print Network [OSTI]

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

    2009-01-01

    to those proposed for reprocessing spent nuclear fuel . Thefuel. Its fate in the UREX reprocessing scheme is modeled astemperatures likely during reprocessing, their formation may

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

    E-Print Network [OSTI]

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

    2009-01-01

    proposed for reprocessing spent nuclear fuel . The resultingof spent nuclear fuel. Its fate in the UREX reprocessing

  6. Atomic scale studies of doped-hole distributions, self-organized electronic nano-domains, and electron-boson coupling in high Tc-cuprates

    SciTech Connect (OSTI)

    Davis, James C.

    2014-05-14

    Progress is reported in these areas (titles and abstracts of journal articles produced for the contract): 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 Bi2Sr2CaCu2O8+?; and, Visualizing Phase Fluctuating d-Wave Superconductivity in the Cuprate Pseudogap State.

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

    E-Print Network [OSTI]

    Ábrahám, Erika

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

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

    E-Print Network [OSTI]

    2009-01-01

    xylene to ethylbenzene (b) i-butane to propane at TC and WQSxylene to ethylbenzene (b) i-butane to propane at TC and WQSxylene to ethylbenzene (b) i-butane to propane at TC and WQS

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

    E-Print Network [OSTI]

    2009-01-01

    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

  10. Research Topics at CIMS as of Jan. 22, 2015 1. Soft Matter based Robotic hand design which is composed of active

    E-Print Network [OSTI]

    Hochberg, Michael

    , while passive TC film can control the IR waves depending on the tempature outside a house, in summer TC film into the rooms inside a house. The proposed TC film is made of nano-laminate as shown

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

    E-Print Network [OSTI]

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

  12. summer term 2008 University of Heidelberg, Institute of Theoretical Physics Theoretische Physik IV: Statistische Mechanik und Thermodynamik

    E-Print Network [OSTI]

    Heermann, Dieter W.

    this equation. (3 points) (c) Calculate the critical exponents (defined by T |T-Tc Tc |-) and (defined by p-pc

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

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

  16. Technetium Retention During LAW Vitrification

    Office of Environmental Management (EM)

    solubility in LAW glass is not limiting * Facilities vitrifying commercial HLW from reprocessing incorporate Tc in glass at much higher levels (>1000X WTP LAW) * Tc volatility...

  17. Quantum materials research with ultra-cold atomic gases

    E-Print Network [OSTI]

    Plotkin, Steven S.

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

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

    E-Print Network [OSTI]

    Boyer, Edmond

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

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

    E-Print Network [OSTI]

    Schibler, Ueli

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

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

    Shaw, Leah B.

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

  6. Density of states and order parameter in dirty anisotropic superconductors 

    E-Print Network [OSTI]

    Pokrovsky, SV; Pokrovsky, Valery L.

    1996-01-01

    interval of its argument. At (t2tc)/tc50.015 the correction due to the higher-order terms reaches about 20%# Tc /Tc05A6 ~t/tc21 !/~2g!. ~29! At t smaller than tc the d-wave pairing is totally suppressed. The breakdown of the d-wave superconductivity due... in this range of scattering rate is proportional to the corresponding eigenfunction D(w)}C0(w). The domain of 1/t , in which this single- mode regime holds, extends from a clean limit 1/t!Tc0 to a relatively high concentration of impurities exceeding...

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

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

  11. C. T.-C. Nguyen, "Transceiver front-end architectures using high-Q micromechanical resonators (invited)," Pro-ceedings, IEEE European MIDAS Workshop, University of Surrey, United Kingdom, July 17-18, 2000.

    E-Print Network [OSTI]

    Nguyen, Clark T.-C.

    architectures cannot be miniaturized. Specifically, tank circuits with Q's greater than 100 have not been of IC-compatible micromachining technologies that yield micro-scale, high-Q tank compo- nents may now, represent one simple example of this. Mixer-filter devices are yet another.) This talk explores the above

  12. A series of Molybdenum-Copper bilayers were studied for use in 120mK superconducting transition edge sensors for spectrometer applications. The Transition temperature (TC) was tuned to the desired

    E-Print Network [OSTI]

    A series of Molybdenum-Copper bilayers were studied for use in 120mK superconducting transition temperature by adjusting the thickness of the normal copper layer and the superconducting molybdenum layer of a variable superconductor thickness 650Å dMo 1000Å. Material characterization techniques including X

  13. NOTICE: This document details the equations of the CIECAM97s model agreed upon by CIE TC1-34 at its May, 1997 meeting in Kyoto Japan. This

    E-Print Network [OSTI]

    Fairchild, Mark D.

    and a clear definition of the adaptation level factor, D. It is important to note that the formulation are the luminance of the adapting field (normally taken to be 20% of the luminance of white in the adapting field of the source white in the source conditions, XwYwZw, the relative luminance of the source background

  14. Con ng i v n ang ti n ha M t nghin c u m i pht hi n, con ng i v n ang ch u s tc ng c a qu trnh

    E-Print Network [OSTI]

    Lummaa, Virpi

    Xaluan.com Trang Nh t Con ng i v n ang ti n hóa M t nghiên c u m i phát hi n, con ng i v n ang ch u s tác ng c a quá trình ch n l c t nhiên, gi ng nh nh ng loài sinh v t khác. Nói m t cách khác, s ti n hóa c a con ng i ti p t c tuân theo quy lu t "k thích h p nh t t n t i" trong thuy t ti n hóa c

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

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

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

    SciTech Connect (OSTI)

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

    1994-07-01

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

  19. NHA-DOE Cost Shared Activities: Hydrogen Codes and Standards Outreach

    E-Print Network [OSTI]

    . · Continue to advance U.S. industry positions in the international arena, including ISO TC 197 and IEC TC 105 and write new standards for hydrogen technologies. This includes such items as storage tanks, fueling

  20. Instability Versus Equilibrium Propagation of a Laser Beam in Plasma Pavel M. Lushnikov1,2

    E-Print Network [OSTI]

    Lushnikov, Pavel

    is suppressed by small enough [2] Tc, Tc lc=cs, with cs the speed of sound. However, we find, and therefore is not a prac- tical tool for exploring the large parameter space of ICF designs. Knowledge

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

    E-Print Network [OSTI]

    Wu, Zhigang

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

  2. Late Cretaceous to Paleocene oroclinal bending in the central Pontides (Turkey)

    E-Print Network [OSTI]

    Utrecht, Universiteit

    Late Cretaceous to Paleocene oroclinal bending in the central Pontides (Turkey) Maud J. M. Meijers (Turkey), Tectonics, 29, TC4016, doi:10.1029/2009TC002620. 1. Introduction [2] The Turkish Pontides

  3. SALIVARY BIOMARKER ASSESSMENT OF ELITE COLLEGIATE BASKETBALL PLAYERS ACROSS AN NCAA SEASON

    E-Print Network [OSTI]

    Andre, Matthew Joseph

    2014-05-31

    The ratio between testosterone and cortisol (TC) has been used to monitor training stress and performance in athletes. PURPOSE: To monitor free testosterone (T), cortisol (C), and the ratio of testosterone to cortisol (TC) in elite NCAA Division I...

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

    E-Print Network [OSTI]

    Varghese, Joshua

    2011-08-02

    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...

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

    E-Print Network [OSTI]

    Daly, A.

    2006-01-01

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

  6. Respirators for Pesticide Applications1 Frederick M. Fishel2

    E-Print Network [OSTI]

    Hill, Jeffrey E.

    respirators only (100 series filters) · TC-23C: chemical cartridge respirators · TC-14G: gas masks such as dusts and mists. Newer pesticide labels that specify organic vapor-removing cartridge respirators, once

  7. Identifying Key Pathways in Multiple Cancers with Multi-omics Pathway Analysis

    E-Print Network [OSTI]

    Ng, Sam

    2015-01-01

    Goiffon R.J. , Goldstein T.C. , Ng S. , et al. (2012) Whole-Benz S.C. , Goldstein T.C. , Ng S. , et al. (2011) SubtypeA.D. , Tamborero D. , Ng S. , et al. (2014) Multiplatform

  8. Radioactive Technetium

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

    loading: <2 wt%). Proposed waste-forms for Tc 625 Chemically bonded ceramic forms D. Singh et al., J. Nucl. Mater., 348, (2006) 272. EDX mapping of Tc XRD pattern of forms 1)...

  9. Preparation of high specific activity technetium-96

    DOE Patents [OSTI]

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

    1992-01-01

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

  10. Heightened hurricane surge risk in northwest Florida revealed from climatological-hydrodynamic modeling and paleorecord reconstruction

    E-Print Network [OSTI]

    Lin, Ning

    Historical tropical cyclone (TC) and storm surge records are often too limited to quantify the risk to local populations. Paleohurricane sediment records uncover long-term TC activity, but interpreting these records can ...

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

    SciTech Connect (OSTI)

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

    2008-12-01

    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.

  12. Edinburgh Research Explorer The Structure of Eu-III

    E-Print Network [OSTI]

    Millar, Andrew J.

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

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

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

  15. This content has been downloaded from IOPscience. Please scroll down to see the full text. Download details

    E-Print Network [OSTI]

    Theune, Mariët

    Abstract After the discovery of the perovskite high Tc superconductors in 1986, a rare and almost unknown

  16. Astronomy 242: Review Questions #4 Distributed: April 29, 2014

    E-Print Network [OSTI]

    Barnes, Joshua Edward

    in Uranium deposits, where it is produced by spontaneous fission). (a) If 98 Tc had been present in the Solar

  17. Tropical Cyclogenesis Factors in a Warming Climate 

    E-Print Network [OSTI]

    Cathey, Stephen Christopher

    2012-02-14

    (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...

  18. I HEHORANDIJH I TO{ FILE DATE SUti.lECTa I O&R(S)

    Office of Legacy Management (LM)

    ?? rrimo cl Other information (i.e., cost 0 +bcontractor + fixed fem. unit price, ?? Purchase Order time 81 material, ?? tc) , ---...

  19. Phase Fluctuations in a Strongly Disordered s-Wave NbN Superconductor Close to the Metal-Insulator Transition

    E-Print Network [OSTI]

    Raychaudhuri, Pratap

    insulating Bi films [4], finite high-frequency superfluid stiffness above Tc in amorphous InOx films [5

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

    E-Print Network [OSTI]

    Roden, Eric E.

    of medical and defense nuclear waste. During spent nuclear fuel reprocessing, 99 Tc(IV)O2 is solubilized

  1. , but also as the magnetic eld is imposed for xed x (ref. 17). The anisotropic eld effect reects the anisotropy of other

    E-Print Network [OSTI]

    Buratto, Steve

    exist in models postulating a Bose±Einstein conden- sation of pre-formed pairs at Tc in the underdoped±1347 (1999). 12. Uemura, Y. J. Bose-Einstein to BCS crossover picture for high-Tc cuprates. Physica C 282. Speci®c heat of high temperature superconductors in high ®elds at Tc: from BCS to the Bose-Einstein

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

    E-Print Network [OSTI]

    Espigares, Tíscar

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

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

    E-Print Network [OSTI]

    Hart, Gus

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

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

    E-Print Network [OSTI]

    Meskhidze, Nicholas

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

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

    E-Print Network [OSTI]

    Suendermann, David

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

  6. CURRICULUM VITAE -KARL MUELLER (01/2012) Associate Professor Karl.Mueller@colorado.edu

    E-Print Network [OSTI]

    Mojzsis, Stephen J.

    deposits (e.g. rock salt), its relation to how plastic creep and sudden surges drive by rainfall Architecture, Tectonics, 30, TC4011, doi:10.1029/2010TC002825. 2. *Yanites, B., Tucker, G. Hsu, H., Chen, C Ranges in Baja and Southern California by removal of mantle lithosphere: Tectonics 28, TC5003, doi: 10

  7. Context dependent substitution biases vary within the human genome

    E-Print Network [OSTI]

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

    2010-01-01

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

  8. Commercial Feeding Stuffs, 1914-15: Texas Feed Law. 

    E-Print Network [OSTI]

    Youngblood, B. (Bonney)

    1915-01-01

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

  9. An investigation of groundwater organics, soil minerals, and activated carbon on the complexation, adsorption, and separation of technetium-99

    SciTech Connect (OSTI)

    Gu, B.; Dowlen, K.E.

    1996-01-01

    This report summarizes studies on the interactions of technetium-99 (Tc) with different organic compounds and soil minerals under both oxidizing and reducing conditions. The report is divided into four parts and includes (1) effect of natural organic matter (NOM) on the complexation and solubility of Tc, (2) complexation between Tc and trichloroethylene (TCE) in aqueous solutions, (3) adsorption of Tc on soil samples from Paducah Gaseous Diffusion Plant (PGDP), and (4) adsorption and separation of Tc on activated carbon. Various experimental techniques were applied to characterize and identify Tc complexation with organic compounds and TCE, including liquid-liquid extraction, membrane filtration, size exclusion, and gel chromatography. Results indicate, within the experimental error, Tc (as pertechnetate, TcO{sub 4}) did not appear to form complexes with groundwater or natural organic matter under both atmospheric and reducing conditions. However, Tc can form complexes with certain organic compounds or specific functional groups such as salicylate. Tc did not appear to form complexes with TCE in aqueous solution.Both liquid-liquid extraction and high performance liquid chromatography (HPLC) gave no indication Tc was complexed with TCE. The correlations between Tc and TCE concentrations in monitoring wells at PGDP may be a coincidence because TCE was commonly used as a decontamination reagent. Once TCE and Tc entered the groundwater, they behaved similarly because both TcO{sub 4}{sup {minus}} and TCE are poorly adsorbed by soils. An effective remediation technique to remove TcO{sub 4}{sup {minus}} from PGDP contaminated groundwater is needed. One possibility is the use of an activated carbon adsorption technique developed in this study.

  10. Oxidative Remobilization of Technetium Sequestered by Sulfide-Transformed Nano Zerovalent Iron

    SciTech Connect (OSTI)

    Fan, Dimin; Anitori, Roberto; Tebo, Bradley M.; Tratnyek, P. G.; Lezama Pacheco, Juan S.; Kukkadapu, Ravi K.; Kovarik, Libor; Engelhard, Mark H.; Bowden, Mark E.

    2014-06-02

    The dissolution of Tc(IV) sulfide and concurrent transformation of sulfidated ZVI during 2 oxidation were examined. Kinetic data obtained with 10 mL batch reactors showed that Tc(VII) 3 reduced by sulfidated nZVI has significantly slower reoxidation rates than Tc(VII) reduced by 4 nZVI only. In a 50 mL batch reactor, initial inhibition of Tc(IV) dissolution was apparent and 5 lasted until 120 hours at S/Fe = 0.112, presumably due to the redox buffer capacity of FeS. This 6 is evidenced by the parallel trends in oxidation-reduction potentials (ORP) and Tc dissolution 7 kinetics. M?ssbauer spectra and micro X-ray diffraction of S/Fe = 0.112 suggested the 8 persistence of FeS after 24-h oxidation although X-ray photoelectron spectroscopy indicated 9 substantial surface oxidation. After 120-h oxidation, all characterizations showed complete 10 oxidation of FeS, which further indicates that FeS inhibits Tc oxidation. X-ray absorption 11 spectroscopy for S/Fe = 0.011 showed significantly increasing percentage of TcS2 in the solid 12 phase after 24-h oxidation, indicating TcS2 is more resistant to oxidation than TcO2. At S/Fe = 13 0.112, the XAS results revealed significant transformation of Tc speciation from TcS2 to TcO2 14 after 120-h oxidation at S/Fe = 0.112. Given that no apparent Tc dissolution occurred during this 15 period, the speciation transformation might play a secondary role in hindering Tc oxidation, 16 especially as redox buffer capacity approached depletion.

  11. C. T.-C. Nguyen, "MEMS technologies and devices for single-chip RF front-ends (invited)," 2005 IMAPS/ACerS Int. Conf. on Ceramic Interconnect and Ceramic Microsystems Technologies (CICMT), Tech. Dig., Denver, Colorado, April 25-26, 2006.

    E-Print Network [OSTI]

    Nguyen, Clark T.-C.

    complexity and more stringent requirements on 90o 0o 90o 0o A/D A/D RF PLL Diplexer From TX RF BPF Mixer I Mixer Q LPF LPF RXRF LO Xstal Osc I Q AGC AGC LNA Antenna Fig. 1: System block diagram of a direct RF BPF GSM 900GSM 900 CDMACDMA From TX From TX 90o 0o 90o 0o I Q Tank ÷ (N+1)/N Xstal Osc Antenna Fig

  12. iMu arrayS:The biOMechanicS Of baSeball piTching eric berKSOn Md, ryan aylWard MS, JaMeS zachazeWSKi dpT,aTc, JOSeph paradiSO phd,ThOMaS J. gill Md

    E-Print Network [OSTI]

    0 iMu arrayS:The biOMechanicS Of baSeball piTching eric berKSOn Md, ryan aylWard MS, JaMeS zachaze biomechanical studies have attempted to quan- tify the mechanics of throwing and to measure the forces sustained in the upper extremity during high-velocity pitching. Biomechanical testing of pitchers in its current state

  13. Hadronic Spectral Functions above the QCD Phase Transition

    E-Print Network [OSTI]

    M. Asakawa; T. Hatsuda; Y. Nakahara

    2002-08-27

    We extract the spectral functions in the scalar, pseudo-scalar, vector, and axial vector channels above the deconfinement phase transition temperature (Tc) using the maximum entropy method (MEM). We use anisotropic lattices, 32^3 * 32, 40, 54, 72, 80, and 96 (corresponding to T = 2.3 Tc --> 0.8 Tc), with the renormalized anisotropy xi = 4.0 to have enough temporal data points to carry out the MEM analysis. Our result suggests that the spectral functions continue to possess non-trivial structures even above Tc and in addition that there is a qualitative change in the state of the deconfined matter between 1.5 Tc and 2 Tc.

  14. Gas-Phase Treatment of Technetium in the Vadose Zone at the Hanford Site Central Plateau

    SciTech Connect (OSTI)

    Truex, Michael J.; Szecsody, James E.; Zhong, Lirong; Qafoku, Nikolla

    2014-09-01

    Technetium-99 (Tc-99) is present in the vadose zone of the Hanford Central Plateau and is a concern with respect to the protection of groundwater. The persistence, limited natural attenuation mechanisms, and geochemical behavior of Tc-99 in oxic vadose zone environments must be considered in developing effective alternatives for remediation. This report describes a new in situ geochemical manipulation technique for decreasing Tc-99 mobility using a combination of geochemical Tc-99 reduction with hydrogen sulfide gas and induced sediment mineral dissolution with ammonia vapor, which create conditions for deposition of stable precipitates that decrease the mobility of Tc-99. Laboratory experiments were conducted to examine changes in Tc-99 mobility in vadose zone sediment samples to evaluate the effectiveness of the treatment under a variety of operational and sediment conditions.

  15. Technetium-99m generator system

    DOE Patents [OSTI]

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

    1998-06-30

    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.

  16. Spin models on random graphs with controlled topologies beyond degree constraints

    E-Print Network [OSTI]

    Coolen, ACC "Ton"

    and outlook #12;1. MOTIVATION Model processes on complex real graphs by solvable processes on suitable random/J 5.944 Tc/J 4.933 Tc/J 4.51? small world model: k = 2 + c p(k2) = e-c ck-2 (k-2)! c = 0 : Tc/J 1) = N-1 i k, j cij r, jk cijcjkcki These models are solvable, calculate average of free energy per spin

  17. Liu UCD Phy9B 07 1 Ch 20. The Second Law of

    E-Print Network [OSTI]

    Yoo, S. J. Ben

    Statements #12;Liu UCD Phy9B 07 9 20-6. Carnot Cycle Carnot engine QH ~ TH QC ~ TC eCarnot =1- |QC/QH|=1- TC Maximum volume rV Compression ratio r (typically 8-10) #12;Liu UCD Phy9B 07 5 Otto Cycle QH=nCV(Tc-Tb) >0 isochoric processes Read about Diesel cycle on your own. #12;Liu UCD Phy9B 07 6 20-4. Refrigerators Here: W

  18. Tank Closure and Waste Management Environmental Impact Statement...

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

    (CRD) describes the public comment process for the Draft Tank Closure and Waste Management Environmental Impact Statement for the Hanford Site, Richland, Washington (Draft TC...

  19. National Idling Reduction Network News - June 2013

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

    30, 2013 tc.gc.caengprogramsenvironment- sptp-2681.htm June 2013 3 REGULATORY NEWS New Hampshire Increases Weight Exemption, Florida's Weight Exemption Bill Dies In New...

  20. COLLOQUIUM - PLEASE NOTE SPECIAL DATE/TIME: The Magnetospheric...

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

    Mission Investigation of Magnetic Reconnection Professor Roy Torbert University of New Hampshire Presentation: File TC21FEB2013RBTorbertCOMPRESSED.pptx In late fall 2014,...

  1. Ubungsblatt 7 Ubungen zur Theoretischen Physik IV, Universitat Heidelberg, WS 06/07

    E-Print Network [OSTI]

    Heermann, Dieter W.

    Zustandsgleichung in den dimensionslosen Gr¨oßen = T/Tc, = V/Vc und = p/pc schreibt, ist es m¨oglich, die

  2. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    for a way to improve these results? Response of High-Tc Superconductor Metamaterials to High Intensity THz Radiation Grady, Nathaniel ; Perkins Jr., Bradford G. ;...

  3. nature methods | VOL.7 NO.4 | APRIL 2010 | 269 news and views

    E-Print Network [OSTI]

    Cai, Long

    .B. & Palmer, A.E. Curr. Opin. Chem. Biol. 12, 60­65 (2008). 7. Cabantous, S., Terwilliger, T.C. & Waldo, G

  4. Curriculum Vitae P. RAJ POKKULURI

    E-Print Network [OSTI]

    Kemner, Ken

    jecorina. Proteins, 79, 2588-2592 (2011). 57. F. DiMaio, T.C. Terwilliger, R.R. Read, A. Wlodawer, G

  5. Motorization Pathway in China: Case Study of Shanghai

    E-Print Network [OSTI]

    Ni, Jason; Hubbard, Donald

    2008-01-01

    WPTC PTC MPTC PMTC BMTC WMTC BTC WBTC PBTC MSTC PSTC WTCWithin Last 3 Stages PTC MTC BTC STC WTC TC TSC MSC BSC

  6. Two Phase Transitions Make a High-Temperature Superconductor

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

    record holders for highest Tc. However, three groups of researchers who performed measurements on the same cuprate material recently joined forces to prove that this view is...

  7. High-Level Waste Corporate Board Meeting Agenda

    Office of Environmental Management (EM)

    Discuss baseline assumptions Describe subsequent talks using flowsheet figure Gary Smith 9:15 AM Waste Treatment & Immobilization Plant (WTP) TcI split factors (w and w...

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

    E-Print Network [OSTI]

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

    2012-01-01

    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

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

    E-Print Network [OSTI]

    Huggins, Kyle

    2012-10-19

    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 (right...) for charm-gluon at 1:2Tc (thick) and 2:0Tc (thin). Diagrams illustrate the s-wave (left) and p-wave (right) for charm-gluon in potential U for the triplet (top), sextet (2nd row), and 15-plet (3rd row) color channels. The bottom diagram corresponds...

  10. Using core-shell metamaterial engineering to triple the critical temperature of a superconductor

    E-Print Network [OSTI]

    Smolyaninova, Vera N; Gresock, Thomas; Jensen, Christopher; Prestigiacomo, Joseph C; Osofsky, M S; Smolyaninov, Igor I

    2015-01-01

    Recent experiments have shown the viability of the metamaterial approach to dielectric response engineering for moderately enhancing the transition temperature, Tc, of a superconductor. In this report, we demonstrate the use of Al2O3-coated aluminium nanoparticles to form the recently proposed epsilon near zero (ENZ) core-shell metamaterial superconductor with a Tc that is three times that of pure aluminium. IR reflectivity measurements confirm the predicted metamaterial modification of the dielectric function thus demonstrating the efficacy of the ENZ metamaterial approach to Tc engineering. These results provide an explanation for the long known, but not understood, enhancement of the Tc of granular aluminum films.

  11. 4th Annual DOE-ERSP PI Meeting: Abstracts

    E-Print Network [OSTI]

    Hazen, Terry C.

    2009-01-01

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

  12. LANL: AOT & LANSCE The Pulse May 2012

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

    high-Tc superconductivity in layered cuprates, colossal magnetoresistance (CMR) in perovskite manganites, to the coexistence of magnetism and ferroelectricity-termed...

  13. Metagenomic Insights into Evolution of a Heavy Metal-Contaminated Groundwater Microbial Community

    E-Print Network [OSTI]

    Hemme, Christopher L.

    2010-01-01

    147: 173-180 Brodie EL, DeSantis TZ, Joyner DC, Baek SM, Larsen JT, Andersen GL, Hazen TC, Richardson PM,

  14. Installation and Commissioning Automated Demand Response Systems

    E-Print Network [OSTI]

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

    2008-01-01

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

  15. Domestic production of medical isotope Mo-99 moves a step closer

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

    foreign reactors. The North American supply of Tc-99m was severely disrupted when the Chalk River nuclear reactor in Canada experienced an outage several years ago. The...

  16. LOS ALAMOS, N.M., May 13, 2013-Today, Los Alamos National Laboratory

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

    foreign reactors. The North American supply of Tc-99m was severely disrupted when the Chalk River nuclear reactor in Canada experienced an outage several years ago. The...

  17. STUDIES OF WALL FLAME QUENCHING AND HYDROCARBON EMISSIONS IN A MODEL SPARK IGNITION ENGINE

    E-Print Network [OSTI]

    Ishikawa, Nobuhiko

    2011-01-01

    w is rate of reaction and u is velocity of unburned gasof reaction q heat flux Su burning velocity T temperature Tc

  18. Modeling and Control of an Active Magnetic Bearing Spindle System

    E-Print Network [OSTI]

    Cavalier, Grant

    2015-01-01

    Active Magnetic Bearing SpindleKang. “Control of an Active Magnetic Bearing-Rotor System. ”T.C. Tsao. “Control of Magnetic Bearings with Plug-in Time-

  19. An Ecient Linearity-and-Bound-Preserving Remapping Method

    E-Print Network [OSTI]

    Shashkov, Mikhail

    @tc.uni-paderborn.de Mathematics Subject Classification (2000): Primary 47J35, 35K90 ­ Secondary 34G20, 80A22. Key words: abstract

  20. MOLECULAR MECHANISM OF MICROBIAL TECHNETIUM REDUCTION FINAL REPORT...

    Office of Scientific and Technical Information (OSTI)

    TECHNETIUM REDUCTION FINAL REPORT Microbial Tc(VII) reduction is an attractive alternative strategy for bioremediation of technetium-contaminated subsurface environments....

  1. TO: FROM: SUBJECT,

    Office of Legacy Management (LM)

    Facility 0 Other --- 0 Other information (i.e., cost + fixed fee, unit price, time t material, l tc) -w-w--- --- ContractPurchase Order 9...

  2. IEC 61850 Industrial Communication Standards under Test

    E-Print Network [OSTI]

    Tilaro, F M; Gonzalez-Berges, M

    2014-01-01

    IEC-61850, as part of the International Electrotechnical Commission's (IEC) Technical Committee 57 (TC57), defines an international and standardized methodology to design electric power automation substations.

  3. Process for the extraction of technetium from uranium

    DOE Patents [OSTI]

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

    2010-12-21

    A spent fuel reprocessing method contacts an aqueous solution containing Technetium(V) and uranyl with an acidic solution comprising hydroxylamine hydrochloride or acetohydroxamic acid to reduce Tc(V) to Tc(II, and then extracts the uranyl with an organic phase, leaving technetium(II) in aqueous solution.

  4. Ion-beam and electron-beam irradiation of synthetic britholite S. Utsunomiya a

    E-Print Network [OSTI]

    Utsunomiya, Satoshi

    Ion-beam and electron-beam irradiation of synthetic britholite S. Utsunomiya a , S. Yudintsev b , L ). The sequence of increasing Tc correlates with the mass of the incident ion; whereas, the ratio of electronic to nuclear stopping power (ENSP) is inversely correlated with Tc. Electron irradiations were conducted

  5. 1448 AIAA JOURNAL VOL. 22, NO. 10 A Comparison of Vaporization Models in Spray Calculations

    E-Print Network [OSTI]

    Aggarwal, Suresh K.

    , K = TT'C, gas temperature = Tk TC, droplet surface temperature = ttc, time = tc/D'c/L2 c, ratio' =pp'c, gas density p'k = liquid fuel density pr =p'c/pk, ratio of initial gas-phase density

  6. summer term 2008 University of Heidelberg, Institute of Theoretical Physics Theoretische Physik IV: Statistische Mechanik und Thermodynamik

    E-Print Network [OSTI]

    Heermann, Dieter W.

    ) = p (V ) = 0. (3 points) (b) On writing the equation of state in the dimensionless variables = T/Tc, = V/Vc and = p/pc one can eliminate the constants a and b. First express a and b by Tc, Vc and pc

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

    E-Print Network [OSTI]

    Boyer, Edmond

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

  8. JOURNAL DE PHYSIQUE Colloque C8, Supplkment au no 12, Tome 49, d6cembre 1988

    E-Print Network [OSTI]

    Boyer, Edmond

    -Tc superconductors is reported. The magnetic cycle of granular materials is characterized by a low field (H -high-Tc superconduct- ing ceramics often exhibit four more characteristic fields ( H s (520 G ), H z (W 50-100 G) , H

  9. arXiv:cond-mat/0504741v128Apr2005 d = 3 Anisotropic and d = 2 tJ Models

    E-Print Network [OSTI]

    Gozuacik, Devrim

    to the superconducting phase in high-Tc materials, persists even for strong anisotropy. While the phase appears at low of the superconducting phase in high-Tc materials.[4, 5] In fact, the calculated superfluid weight shows a marked peak regime, which is the one directly relevant to high-temperature superconductivity. The extension

  10. Chemical and Biological Engineering MPC Introduction

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    Benzene product CH4 Recycle Toluene CC TC TC Reactor RecycleColumn BenzeneColumn Stabilizer Flash Recycle Evolved independently in the US and France refining industry #12;B. Wayne Bequette How is MPC used? Unit 1 ­ Shell Oil - US Related to techniques developed in France (IDCOM) Large-scale MIMO Formulation

  11. Cobalt Fischer-Tropsch catalysts having improved selectivity

    DOE Patents [OSTI]

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

    1989-01-01

    The promoter(s) Mn oxide or Mn oxide and Zr oxide are added to a cobalt Fischer-Tropsch catalyst combined with the molecular sieve TC-103 or TC-123 such that the resultant catalyst demonstrates improved product selectivity, stability and catalyst life. The improved selectivity is evidenced by lower methane production, higher C5+ yield and increased olefin production.

  12. arXiv:cond-mat/0402655v126Feb2004 Robust dx2-y2 pairing symmetry in high-temperature superconductors

    E-Print Network [OSTI]

    Paris-Sud 11, Université de

    and Magnetism, Institute of Physics, University of Augsburg, D-86135 Augsburg, Germany and 3 Laboratoire de, optimal and overdoped regions. Our work implies that time-reversal invariant, predominantly dx2-y2 pairing- pendence of Tc can be described for many hole-doped cuprate systems by the empirical formula [2]: Tc

  13. Detectability of Excitatory versus Inhibitory Drive in an Integrate-and-Fire-or-Burst Thalamocortical Relay Neuron Model

    E-Print Network [OSTI]

    Sherman, S. Murray

    -and-Fire-or-Burst Thalamocortical Relay Neuron Model Gregory D. Smith1 and S. Murray Sherman2 1Department of Applied Science. To test for such potential differences, especially in the context of the function of thalamocortical (TC) relay nuclei, we used a stochastic "integrate-and-fire-or-burst" TC neuron model to quantify

  14. Electronic structure of superconducting MgB2 and related binary and ternary borides N. I. Medvedeva and A. L. Ivanovskii

    E-Print Network [OSTI]

    Medvedeva, Julia E.

    B2 is not a unique superconductor. A systematic search for superconductivity in a wide range of d to be a superconductor with a TC of about 0.6 K. A large class of superconducting with TC of several K ternary (LnRuB2Electronic structure of superconducting MgB2 and related binary and ternary borides N. I. Medvedeva

  15. ~24 B:urze Originalmitteilungen Die Natur-wissenschaflen

    E-Print Network [OSTI]

    Govindjee

    ~24 B:urze Originalmitteilungen Die Natur- wissenschaflen others e.g. Trichosanthes anguina (snake by stan- dard methods are (M. d. = Momordica dioica; T.c. = Tri- chosanthes cucnmerina) : % oil: M. d. 33 of the presence of conjugated acids). Free fatty acids (% as oIeic acid): M.d. t'4, T.c. t7"0. Colour of oil: M

  16. Copyright 2011 Rockwell Automation, Inc. All rights reserved. Insert Photo Here

    E-Print Network [OSTI]

    Chen, Wei

    TC184 JWG14 Energy Efficiency in Industrial Automation · ISO TC184/SC5/WG10 Methodology to evaluate;Supply Chain Customer · Customized Products Factory Multiple Product Transformations Headquarters · Cost / equipment states · Communications between the Utility and the Factory control system ·Optimize Energy

  17. Unusual heavy-mass nearly ferromagnetic state with a surprisingly large Wilson ratio in the double layered ruthenates (Sr1-xCax)3Ru2O7

    E-Print Network [OSTI]

    Spinu, Leonard

    13 October 2008; published 14 November 2008 We report an unusual nearly ferromagnetic heavy-mass state with a surprisingly large Wilson ratio Rw e.g., Rw 700 for x=0.2 in double layered ruthenates Sr1 between the reported Curie temperatures: Tc 3 K for the polycrystalline samples14 and Tc 100 K

  18. Local antiferromagnetic exchange and collaborative Fermi surface as key ingredients of high temperature superconductors

    E-Print Network [OSTI]

    Hu, Jiangping

    Xiv:1107.1334v1[cond-mat.supr-con]7Jul2011 #12;In a conventional superconductor, superconductivity emerges are harmful to superconductivity [2]. In contrast, the three known classes of high-Tc superconductors, superconductivity in high-Tc superconductors is rather robust against impurities [4, 12], contrary to conventional

  19. Biochemical, Biophysical and Computational Studies of Human and Trypanosoma Cruzi S-Adenosyl-L-Homocysteine Hydrolase

    E-Print Network [OSTI]

    Cai, Sumin

    2008-01-01

    was aimed to address the differences in structure and kinetic properties between Hs-SAHH and Tc-SAHH, the SAHH of Trypanosoma cruzi, the organism which causes Chagas disease in humans. The available X-ray structures of Hs-SAHH and Tc-SAHH show no significant...

  20. Specific-heat discontinuity in impure two-band superconductors 

    E-Print Network [OSTI]

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

    2003-01-01

    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...

  1. Formation of Rigid, Non-Flight Forewings (Elytra) of a Beetle Requires Two Major Cuticular Proteins

    E-Print Network [OSTI]

    Arakane, Yasuyuki; Lomakin, Joseph; Gehrke, Stevin H.; Tomich, John M.; Muthukrishnan, Subbaratnam; Beeman, Richard W.; Kramer, Karl J.; Kanost, Michael R.

    2012-04-26

    for the hindwings) of the red flour beetle, Tribolium castaneum. We identified two highly abundant proteins, TcCPR27 (10 kDa) and TcCPR18 (20 kDa), which are also present in pronotum and ventral abdominal cuticles. Both are members of the Rebers and Riddiford family...

  2. www.sciencesignaling.org/cgi/content/full/6/263/ra12/DC1 Supplementary Materials for

    E-Print Network [OSTI]

    Higgins, Darren

    .P.); perrimon@receptor.med.harvard.edu (N.P.) Published 19 February 2013, Sci. Signal. 6, ra12 (2013) DOI: 10 (blue). Purple line indicates zone 2 defined on the basis of its position at the junction of TC and SB at the junction with the transverse connective (TC) and in the spiracular abdominal histoblasts (SAH). (B) cut

  3. Efficiency at Maximum Power of Low-Dissipation Carnot Engines Massimiliano Esposito

    E-Print Network [OSTI]

    Lindenberg, Katja

    , of engines performing finite-time Carnot cycles between a hot and a cold reservoir at temperatures Th and Tc, respectively. For engines reaching Carnot efficiency C ¼ 1 À Tc=Th in the reversible limit (long cycle time.150603 PACS numbers: 05.70.Ln, 05.20.Ày Thermal machines performing Carnot cycles transform a certain amount

  4. Technetium radiodiagnostic fatty acids derived from bisamide bisthiol ligands

    DOE Patents [OSTI]

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

    1988-05-24

    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.

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

    E-Print Network [OSTI]

    Maruyama, Ashley Katsumi

    2009-05-15

    (TCs) supported on semi-floating ring bearings (SFRBs). The thesis presents progress on the nonlinear modeling of rotor-bearing systems (RBSs) by including engine-induced TC housing excitations. Test data collected from an engine-mounted TC unit...

  6. Bisamide bisthiol compounds useful for making technetium radiodiagnostic renal agents

    DOE Patents [OSTI]

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

    1987-06-16

    A radiodiagnostic bisamido-bisthio ligand useful for producing Tc-labelled radiodiagnostic renal agents is described. The ligand forms a complex with the radionuclide .sup.99m Tc suitable for administration as a radiopharmaceutical to obtain images of the kidney for diagnosis of kidney disfunction.

  7. The development and operational testing of an experimental reactor for gas-liquid-solid reaction systems at high temperatures and pressures 

    E-Print Network [OSTI]

    Hess, Richard Kenneth

    1985-01-01

    , but REACTANTS IN P L'MP CATALYST BED PROD L'CT5 OUT Figure 2. A schematic drawing of an external recycle reactor. ARROWS SHOW FLUID FLOW PATTERN TC PORT CATALYST BED TC PORT INLET IMPELLER OUTLET IMPELLER SHAFT Figure 3. A ISerty reactor. 10...

  8. Effect of the Nature of the Counterion on the Properties of Anionic Surfactants. 3. Self-Association Behavior of Tetrabutylammonium Dodecyl Sulfate and Tetradecyl Sulfate

    E-Print Network [OSTI]

    Bales, Barney

    is increased.1 The cloud temperature, TC, was shown to be a function of the total concentration of TBA+ ions. For the two surfactants, N increases with the surfactant concentration and above a threshold concentration unusual features for ionic surfactants. At temperatures approaching TC from below, the TRFQ data show

  9. Phylogenetic character mapping of RADES Probing, a new marker for exploring the clonal evolution of expressed coding sequences in Trypanosoma cruzi, the agent of Chagas disease

    E-Print Network [OSTI]

    Telleria, J; Barnabé, C; Ayala, FJ; Tibayrenc, M

    2013-01-01

    M6241 cl6 MN cl 2 Bug2148 cl1 SO3 cl5 SC43 cl1 Cl Brener P63cl1 Bug2148 cl1 Tc V MN cl 2 SO3 cl5 M5631 cl5 CM17 Tc III

  10. INTERNATIONAL JOURNAL OF CLIMATOLOGY Int. J. Climatol. 30: 210219 (2010)

    E-Print Network [OSTI]

    Hawai'i at Manoa, University of

    2010-01-01

    prediction are inevitable to mitigate the potential damage caused by TC-induced prospective flash floods February 2009 in Wiley InterScience (www.interscience.wiley.com) DOI: 10.1002/joc.1878 Seasonal prediction statistical models to predict summertime (July­September) tropical cyclone (TC) activity over the East China

  11. 10.1101/gr.071886.107Access the most recent version at doi: 2008 18: 717-728; originally published online Mar 13, 2008;Genome Res.

    E-Print Network [OSTI]

    Feschotte, Cedric

    online Mar 13, 2008;Genome Res. Peter W. Atkinson and Nancy L. Craig David A. Ray, Cedric Feschotte-like and Tc2-like elements. This was followed by the colonization of Tc1-like elements, and by a more recent

  12. Version 1.0 A description of a smallish part of the BepiColombo (BC) MIXS/SIXS

    E-Print Network [OSTI]

    Southampton, University of

    SW. In short, the following explains telecommand (TC) reception, and TC acknowledgement (service 1 of the PUS standard ­ see below for details) the way it is done within the BC MIXS/SIXS instrument SW The BC MIXS/SIXS instrument SW receives telecommands (TCs) via a dedicated hardware link. These TCs

  13. Structural disorder and its effect on the superconducting transition temperature in the organic superconductor -,,BEDT-TTF...2CuN,,CN...2Br

    E-Print Network [OSTI]

    Zuo, Fulin

    is strongly dependent on the applied pressure with a typical dTc /dP 3 K/kbar.6 Recent 13 C NMR and transport of the effect of the cooling rate on the interlayer transport properties as well as its effect on Tc . By freezing the sample into different disordered states, we find that there is strong evidence

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

    E-Print Network [OSTI]

    Ghajar, Afshin J.

    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

  15. Tropical Cyclogenesis Associated with Rossby Wave Energy Dispersion of a Preexisting Typhoon. Part I: Satellite Data Analyses*

    E-Print Network [OSTI]

    Li, Tim

    Tropical Cyclogenesis Associated with Rossby Wave Energy Dispersion of a Preexisting Typhoon. Part with the Rossby wave energy dispersion of a preexisting TC. The wave trains are oriented in a northwest induced by tropical cyclone (TC) energy dispersion are revealed based on the Quick Scatterometer (Quik

  16. Doming in compressional orogenic settings: New geochronological constraints from the NW Himalaya

    E-Print Network [OSTI]

    Hacker, Bradley R.

    Doming in compressional orogenic settings: New geochronological constraints from the NW Himalaya to as the Khanjar Shear Zone (KSZ) and the Zanskar Shear Zone (ZSZ), respectively. Geochronological dating geochronological constraints from the NW Himalaya, Tectonics, 25, TC2007, doi:10.1029/ 2004TC001774. 1

  17. Corrosion of Metal Inclusions In Bulk Vitrification Waste Packages

    SciTech Connect (OSTI)

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

    2006-07-31

    The primary purpose of the work reported here is to analyze the potential effect of the release of technetium (Tc) from metal inclusions in bulk vitrification waste packages once they are placed in the Integrated Disposal Facility (IDF). As part of the strategy for immobilizing waste from the underground tanks at Hanford, selected wastes will be immobilized using bulk vitrification. During analyses of the glass produced in engineering-scale tests, metal inclusions were found in the glass product. This report contains the results from experiments designed to quantify the corrosion rates of metal inclusions found in the glass product from AMEC Test ES-32B and simulations designed to compare the rate of Tc release from the metal inclusions to the release of Tc from glass produced with the bulk vitrification process. In the simulations, the Tc in the metal inclusions was assumed to be released congruently during metal corrosion as soluble TcO4-. The experimental results and modeling calculations show that the metal corrosion rate will, under all conceivable conditions at the IDF, be dominated by the presence of the passivating layer and corrosion products on the metal particles. As a result, the release of Tc from the metal particles at the surfaces of fractures in the glass releases at a rate similar to the Tc present as a soluble salt. The release of the remaining Tc in the metal is controlled by the dissolution of the glass matrix. To summarize, the release of 99Tc from the BV glass within precipitated Fe is directly proportional to the diameter of the Fe particles and to the amount of precipitated Fe. However, the main contribution to the Tc release from the iron particles is over the same time period as the release of the soluble Tc salt. For the base case used in this study (0.48 mass% of 0.5 mm diameter metal particles homogeneously distributed in the BV glass), the release of 99Tc from the metal is approximately the same as the release from 0.3 mass% soluble Tc salt in the castable refractory block and it is released over the same time period as the salt. Therefore, to limit the impact of precipitated Fe on the release of 99Tc, both the amount of precipitated Fe in the BV glass and the diameter of these particles should be minimized.

  18. Technitium Management at the Hanford Site

    SciTech Connect (OSTI)

    Robbins, Rebecca A.

    2013-08-15

    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.

  19. The Effect of Teleconnections on North Atlantic Tropical Cyclone Precipitation 

    E-Print Network [OSTI]

    Wang, Yue

    2015-04-28

    -based) by quadrant with respect to the direction of movement and center of the TC (Source: Figure 4 in Zhu and Quiring, 2013) ................................................... 4 2.2. The 2A25 (c) TC rain, and (d) TC rain fraction based on 58 grid averages... is determined using a k-means cluster analysis. Here k = 3. The red circles and path represent straight-moving hurricanes. The black and blue circles and paths represent recurving hurricanes. Track paths are based on the average positions of the hurricanes...

  20. Experimental and theoretical study of propeller spinner/shank interference 

    E-Print Network [OSTI]

    Cornell, Carl Clayton

    1986-01-01

    of a spinner with four round (18) stub blade shanks attached. The shank length was established to duplicate that of a typical unfaired blade shank. From Reid's data Borst , ' deduced a drag interference loss of C = 0. 517 which (19, 20) D... in the form of: 2 2 0 = ~ = 0. 8(t/c) - 0. 0003 D qc C (III-5) C = ~ 0. 75(t/c) ? 0 0003(t/c) 2 D ~qt (III-6) 22 Sarsfeld postulated that the change in efficiency can be represented by a ratio of interference drag to thrust produced by the propeller...

  1. Evaluation of Technetium Getters to Improve the Performance of Cast Stone

    SciTech Connect (OSTI)

    Neeway, James J.; Qafoku, Nikolla P.; Serne, R. Jeffrey; Lawter, Amanda R.; Stephenson, John R.; Lukens, Wayne W.; Westsik, Joseph H.

    2015-11-01

    Cast Stone has been selected as the preferred waste form for solidification of aqueous secondary liquid effluents from the Hanford Tank Waste Treatment and Immobilization Plant (WTP) process condensates and low-activity waste (LAW) melter off-gas caustic scrubber effluents. Cast Stone is also being evaluated as a supplemental immobilization technology to provide the necessary LAW treatment capacity to complete the Hanford tank waste cleanup mission in a timely and cost effective manner. One of the major radionuclides that Cast Stone has the potential to immobilize is technetium (Tc). The mechanism for immobilization is through the reduction of the highly mobile Tc(VII) species to the less mobile Tc(IV) species by the blast furnace slag (BFS) used in the Cast Stone formulation. Technetium immobilization through this method would be beneficial because Tc is one of the most difficult contaminants to address at the U.S. Department of Energy (DOE) Hanford Site due to its complex chemical behavior in tank waste, limited incorporation in mid- to high-temperature immobilization processes (vitrification, steam reformation, etc.), and high mobility in subsurface environments. In fact, the Tank Closure and Waste Management Environmental Impact Statement for the Hanford Site, Richland, Washington (TC&WM EIS) identifies technetium-99 (99Tc) as one of the radioactive tank waste components contributing the most to the environmental impact associated with the cleanup of the Hanford Site. The TC&WM EIS, along with an earlier supplemental waste-form risk assessment, used a diffusion-limited release model to estimate the release of different contaminants from the WTP process waste forms. In both of these predictive modeling exercises, where effective diffusivities based on grout performance data available at the time, groundwater at the 100-m down-gradient well exceeded the allowable maximum permissible concentrations for 99Tc. (900 pCi/L). Recent relatively short-term (63 day) leach tests conducted on both LAW and secondary waste Cast Stone monoliths indicated that 99Tc diffusivities were at or near diffusivities where the groundwater at the 100-m down-gradient well would exceed the allowable maximum permissible 99Tc concentrations. There is, therefore, a need and an opportunity to improve the retention of Tc in the Cast Stone waste form. One method to improve the performance of the Cast Stone waste form is through the addition of “getters” that selectively sequester Tc inside Cast Stone.

  2. Lipoprotein subclass analysis by immunospecific density 

    E-Print Network [OSTI]

    Lester, Sandy Marie

    2009-05-15

    software. C18 Solid Phase Extraction, Desalting, and Delipidation A. Materials The proteins in VLDL, LDL, and HDL were delipidated and purified using a tC18 Light cartridge (Sep-Pack, 36805, Waters, Milford, MA, USA). Also used were trifluoroacetic... background buffer seven times for 3 minutes at 6,000 rpm. Apo C-1 enriched HDL fractions were delipidated using a tC18 Light Cartridge. The tC18 cartridge was conditioned with 5 mL 0.1% TFA in ACN slowly, allowing no air to enter the cartridge...

  3. Reactions of the tridentate and tetradentate amine ligands di-(2-picolyl)(N-ethyl)amine and 2,5-bis-(2-pyridylmethyl)-2,5 diazohexane

    E-Print Network [OSTI]

    Müller, Peter

    in Real Time ­ made by IonSense) ion source. ESI condition: Drying gas (N2) at 30 psi, heated to 230 °C(NO)Cl(py-N(Et)-py)]. The reaction of the Tc(I) nitrosyl complex [Tc(NO)Cl2(HOMe)(PPh3)2] with this tridentate ligand yields cationic. The reaction of [Tc(NO)Cl2(HOMe)(PPh3)2] with the tetradentate ligand 1,4-bis-(2-pyridylmethyl)-1,4-diazobutane

  4. TO

    Office of Legacy Management (LM)

    42-17, Grade A. It is not presently known whether the code number refers to the uranyl nitrate which was originally ordered or tc the UO3 which was actually reoeived....

  5. Omega-3 fatty acid rich eggs as an alternative to fish in the diet: effects on human platelet aggregation and plasma lipids 

    E-Print Network [OSTI]

    Mayo, Patricia

    1996-01-01

    ) or menhaden oil (DHA, high in docosahexaenoic acid). Subjects consumed all types for 6 weeks with a 4 week washout period between each for a total of 3 test periods. Plasma total cholesterol (TC) and triacylglycerol (TG) were determined enzymatically...

  6. Executing declarative languages on a fine-grain parallel machine

    E-Print Network [OSTI]

    O'Donnell, J.T.

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

  7. Memorandum of Understanding Between the United States Department...

    Office of Environmental Management (EM)

    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...

  8. Unconventional behavior of the Ce3Pt23Si11 ferromagnet C. Opagiste,1,

    E-Print Network [OSTI]

    Boyer, Edmond

    23Si11 is in equilibrium with the non-centrosymetric heavy fermion superconductor CePt3Si, when and presents a heavy fermion supercon- ducting state at Tc = 750 mK. Many studies on the superconductivity

  9. THESES PUBLIEES DURANT LE SEMESTRE D'ETE 2005 LISTE N 66

    E-Print Network [OSTI]

    Schibler, Ueli

    -Tc superconductors : a study of the transport properties in the underdoped regime. #12;3573 LEILA BOSSY NOBS DOCTEUR;3590 VITAL ABÄCHERLI DOCTEUR ES SCIENCES, MENTION PHYSIQUE Improvement Of Workability And Superconducting

  10. Tropical Cyclone Genesis Factors in Simulations of the Last Glacial Maximum ROBERT L. KORTY

    E-Print Network [OSTI]

    , University of New Mexico, Albuquerque, New Mexico (Manuscript received 12 September 2011, in final form 6, and they and the clima- tology of TCs may have differed in other climate states. Analyses of the portion of the global TC

  11. Prospects for high temperature ferromagnetism in (Ga,Mn)As semiconductors 

    E-Print Network [OSTI]

    Jungwirth, T.; Wang, KY; Masek, J.; Edmonds, KW; Konig, J.; Sinova, Jairo; Polini, M.; Goncharuk, NA; MacDonald, AH; Sawicki, M.; Rushforth, AW; Campion, RP; Zhao, LX; Foxon, CT; Gallagher, BL.

    2005-01-01

    We report on a comprehensive combined experimental and theoretical study of Curie temperature trends in (Ga,Mn)As ferromagnetic semiconductors. Broad agreement between theoretical expectations and measured data allows us to conclude that T-c in high...

  12. $J/?$ and $?_c$ in the Deconfined Plasma from Lattice QCD

    E-Print Network [OSTI]

    M. Asakawa; T. Hatsuda

    2003-11-13

    Analyzing correlation functions of charmonia at finite temperature ($T$) on $32^3\\times(32-96)$ anisotropic lattices by the maximum entropy method (MEM), we find that $J/\\psi$ and $\\eta_c$ survive as distinct resonances in the plasma even up to $T \\simeq 1.6 T_c$ and that they eventually dissociate between $1.6 T_c$ and $1.9 T_c$ ($T_c$ is the critical temperature of deconfinement). This suggests that the deconfined plasma is non-perturbative enough to hold heavy-quark bound states. The importance of having sufficient number of temporal data points in MEM analyses is also emphasized.

  13. Testing a Coupled Global-limited-area Data Assimilation System Using Observations from the 2004 Pacific Typhoon Season 

    E-Print Network [OSTI]

    Holt, Christina

    2012-10-19

    Tropical cyclone (TC) track and intensity forecasts have improved in recent years due to increased model resolution, improved data assimilation, and the rapid increase in the number of routinely assimilated observations ...

  14. This content has been downloaded from IOPscience. Please scroll down to see the full text. Download details

    E-Print Network [OSTI]

    Raychaudhuri, Pratap

    Institute of Fundamental Research (TIFR), Dr Homi Bhabha Road, New Navy Nagar, Colaba, Mumbai-400005, India. The structure and Tc are mapped on an Au­Sb­Te triangular diagram. A -Po-type rhombohedral structure appears

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

    E-Print Network [OSTI]

    Reddivari, Lavanya

    2009-05-15

    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...

  16. NIST ITL Participation in Voluntary Standards Developing Organizations (Key: Highlighted activities represent areas, which are international in scope.

    E-Print Network [OSTI]

    Subcommittee on Statistics N. F. Zhang 898 ASME PTC 19.1 Measurement Uncertainty H.K. Iyer 898 ASTM E-11 Level 7 Electronic Health Records L. Rosenthal 897 HL7 Modeling & Methodology TC Health Level 7 Modeling

  17. Input layer Hidden layer

    E-Print Network [OSTI]

    Cottrell, Garrison W.

    Error Rates for /ae/+/iy/+/ux/ NoTC-All Tau-Net NoTC-Med % error 0 2 4 6 8 10 12 14 16 18 20 wts.0 wts.1 wts.2 #12;0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Normalized DurationTC-All Tau-Net NoTC-Med % error 0 10 20 30 40 50 60 70 80 wts.0 wts.1 wts.2 #12;#12;0.4 0.6 0.8 1 1.2 1.4 1

  18. Analysis of Automotive Turbocharger Nonlinear Response Including Bifurcations 

    E-Print Network [OSTI]

    Vistamehr, Arian

    2010-10-12

    Automotive turbochargers (TCs) increase internal combustion engine power and efficiency in passenger and commercial vehicles. TC rotors are usually supported on floating ring bearings (FRBs) or semi-floating ring bearings ...

  19. Engineering Evaluation/Cost Analysis

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

    Building X-344B. Tc-99 is a beta emitter which means it is particularly harmful to the lungs via the inhalation pathway. The uranium isotopes (e.g., U-234, U-235, and U-238 in...

  20. July 25, 2003 17:10 WSPC/Trim Size: 10in x 7in for Proceedings icmpproc FERMI SYSTEMS IN TWO DIMENSIONS AND FERMI SURFACE FLOWS

    E-Print Network [OSTI]

    Heermann, Dieter W.

    of high­Tc superconductivity in the cuprate compounds, Anderson [4] conjectured that due to an infrared­Luttinger effect, superconductivity will set in and smooth out the step even in systems with a repulsive initial

  1. Physical and Chemical Characterization of Particulate and Gas phase Emissions from Biomass Burning

    E-Print Network [OSTI]

    Hosseini, Seyedehsan

    2012-01-01

    carbon monoxide, and particulate emissions from the combustioncombustion of biomass is dominated by emissions of carbon dioxide (CO 2 ), carbon monoxide (carbon monoxide; EC/TC ratio is proposed as a better surrogate of combustion

  2. Conclusions Observed enhancement in convection heat transfer coefficient in

    E-Print Network [OSTI]

    Walker, D. Greg

    Setup Constant Temperature Bath Parastaltic Pump Nanofluid Reservoir Heated Test Section w/ Wall TC · volumetric flow rate Why do nanofluids exhibit enhanced properties? Competing theories 1. Jang and Choi

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

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

    Interfacial Electron-Phonon Coupling as the Cause of Enhanced Tc in Single-layer FeSe Films on SrTiO3 Friday, February 27, 2015 In the past several years, multiple studies have...

  4. HBCU College Festival sponsored by Alfred Street Baptist Church

    Broader source: Energy.gov [DOE]

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

  5. The passive mechanical properties and protein composition of skeletal muscle change with Botulinum neurotoxin A treatment

    E-Print Network [OSTI]

    Thacker, Bryan Edward

    2008-01-01

    Pollack GH. (1997) Basis of passive tension and stiffness inHL, Irving TC. (1995) Passive tension in cardiac muscle:VI, Pollack GH. (1994) Passive and active tension in single

  6. A CRITICAL REVIEW OF WIND TRANSMISSION COST ESTIMATES FROM MAJOR TRANSMISSION PLANNING EFFORTS

    E-Print Network [OSTI]

    Mills, Andrew; Wiser, Ryan; Porter, Kevin

    2007-01-01

    Solar Capacity Factor Capacity Energy TC = c c ( P w + P c +cost weighted by energy or capacity has far less importancerelative share of capacity and energy from the modeled wind

  7. e-mail : kkt14418@hanmail.net, sbahk@snu.ac.kr Neighbor-aware Adaptive Load Balancing Algorithm

    E-Print Network [OSTI]

    Bahk, Saewoong

    is suitable for dense wireless sensor networks that network environment is changeable. I. . , , . . . . II. 2.1 . Tree Construction(TC) Neighbor Information(NI), Probability] Wei Ye, John Heidemann, and Deborah Estrin," "Medium access control with coordinated, adaptive

  8. THE CO2 ABATEMENT POTENTIAL OF CALIFORNIA'S MID-SIZED COMMERCIAL BUILDINGS

    E-Print Network [OSTI]

    Stadler, Michael

    2010-01-01

    Due to increased PV and solar thermal adoption. Table D8.to increased PV and solar thermal adoption. $450/tC ( = $to increased PV and solar thermal adoption. Medium NG prices

  9. 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]

    Stadler, Michael

    2009-01-01

    capabilities for storage and PV adoption and scheduling, andfew isolated cases, but PV adoption at its full unsubsidizedlevels of $1000/tC no PV adoption takes place. At extreme

  10. Available online at www.sciencedirect.com Physics Procedia 00 (2008) 000000

    E-Print Network [OSTI]

    Zallen, Richard

    2008-01-01

    to a pulsed magnet generating fields up to 50 Tesla, provided a tunable radiation source in the FarMnAs up to 50 Tesla. The measurements at higher magnetic fields will be pursued. In addition to high Tc

  11. Future Synthesis and Annealing Program in CMPMSD Manufacturer: American Isostatic

    E-Print Network [OSTI]

    Johnson, Peter D.

    Required ASME, Boiler and Pressure Vessel Code, Section VIII, Division 3 #12;3 Overview of AIP Hot;#12;#12;#12;Top Platen #12;Furnace #12;Bottom Platen, Electrodes, TC's #12;

  12. This

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

    Tc Kai Xu a,b , Pavel Hrma a,c , Wooyong Um a,c , Jong Heo a,b, a Division of Advanced Nuclear Engineering, Pohang University of Science and Technology (POSTECH), Pohang,...

  13. Modelling Geospatial Application Databases using UML-based Repositories Aligned with International Standards in Geomatics

    E-Print Network [OSTI]

    Modelling Geospatial Application Databases using UML-based Repositories Aligned with International, geospatial database modelling, interoperability, metadata, UML, Perceptory, ISO/TC 211, OGC 1. Introduction the conceptual content of object oriented application database schemas and dictionaries aligned

  14. Removal of pertechnetate from simulated nuclear waste streams using supported zerovalent iron

    E-Print Network [OSTI]

    Darab, John

    2008-01-01

    with smaller amounts of goethite and magnetite. At high pH,Fe Metal % Magnetite % Goethite % Hematite Raw FG FG w/TcOFe K edge XANES spectra of (a) Goethite, (b) Hematite, (c)

  15. Studies of Nonlinear Electrodynamics of High-Tempearture Superconductors

    E-Print Network [OSTI]

    Lam, Q.-C.H.

    2009-01-01

    editors, Novel Superconductivity, Press. R.L. Peterson andof High Temperature Superconductors. World Scientific, J.C.Physics of High-Tc Superconductors. C.P. Poole, Jr. , T.

  16. Available at: http://publications.ictp.it IC/2010/067 United Nations Educational, Scientific and Cultural Organization

    E-Print Network [OSTI]

    FOR THEORETICAL PHYSICS ABILITY OF ACCELERATOR- DRIVEN SYSTEMS (ADS) TO TRANSMUTE LONG LIVED FISSION FRAGMENTS-lived fission fragments as 99 Tc,127 I, 129 I,181 Ta,107 Ag,109 Ag by accelerator-driven systems. We use semi

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

    E-Print Network [OSTI]

    Fei, Zhangjun

    2004-09-30

    .?????????. 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...

  18. Lipoprotein cholesterol and progesterone secretion in cycling pony mares fed a control or a fat-supplemented diet 

    E-Print Network [OSTI]

    Campbell, Marshall Alice

    1998-01-01

    The objective of this study was to quantify concentrations of serum progesterone, total cholesterol (TC), and lipoprotein-cholesterol fractions (HDL, LDL, and VLDL) in cycling pony mares fed a conventional versus a 12% fat-supplemented (animal fat...

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

    E-Print Network [OSTI]

    Hearne, David Douglass

    1997-01-01

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

  20. Angular-Dependence of the Critical Current in Layered Superconductors 

    E-Print Network [OSTI]

    Pokrovsky, Valery L.; Lyuksyutov, Igor F.; NATTERMANN, T.

    1992-01-01

    rate, mechanical power loss, peak pressure, lubricant temperature rise, as well as rotordynamic stiffness and damping coefficients for a lubricated TC and bull gear pair. A Newton-Raphson based iterative procedure determines an equilibrium operating...

  1. Magneto-optical characterizations of FeTe???Se??? thin...

    Office of Scientific and Technical Information (OSTI)

    in the two thin films. Compared with bulk crystals, FeTeSe thin film demonstrates not only higher Tc, but also much larger Jc, which is attractive for...

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

    E-Print Network [OSTI]

    Langousis, Andreas, 1981-

    2009-01-01

    We develop a methodology for the frequency of extreme rainfall intensities caused by tropical cyclones (TCs) in coastal areas. The mean rainfall field associated with a TC with maximum tangential wind speed Vmax, radius ...

  3. Diurnal analysis of intensity trends in Atlantic tropical cyclones

    E-Print Network [OSTI]

    Kowch, Roman S

    2013-01-01

    I postulate that a diurnal cycle may exist in observational variables related to tropical cyclone (TC) intensity. Prior studies document a significant diurnal signal in moist convection across tropical regions. Since ...

  4. Synthesis and physical properties of low dimensional quantum magnets 

    E-Print Network [OSTI]

    Nilsen, Gøran Jan

    2010-11-25

    Strong electron correlation lies at the root of many quantum collective phenomena observed in solids, including high Tc superconductivity. Theoretically, the problem of many interacting electrons is difficult to treat, ...

  5. Interlayer Coherence and Superconducting Condensate in the c...

    Office of Scientific and Technical Information (OSTI)

    Interlayer Coherence and Superconducting Condensate in the c-Axis Response of Optimally Doped Ba(Fe1-xCox)2As2 High-Tc Superconductor Using Infrared Spectroscopy Citation Details...

  6. Kinetics of Anionic Surfactant Anoxic Degradation 

    E-Print Network [OSTI]

    Camacho, Julianna G.

    2010-07-14

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

  7. The sawing machine is a machine SAWING MACHINES

    E-Print Network [OSTI]

    Gellman, Andrew J.

    reservoir and a pump for conveying the coolant to the work. The reservoir contains baffles which cause prevents unnecessary wear on the saw blade. The cutting stroke is on the draw or back stroke. 6-1 #12;TC 9

  8. 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...

  9. Charge-density-wave origin of cuprate checkerboard visualized by scanning tunnelling microscopy

    E-Print Network [OSTI]

    Wise, W. D.

    One of the main challenges in understanding high-Tc superconductivity is to disentangle the rich variety of states of matter that may coexist, cooperate or compete with d-wave superconductivity. At centre stage is the ...

  10. Method for treating liquid wastes

    DOE Patents [OSTI]

    Katti, Kattesh V. (Columbia, MO); Volkert, Wynn A. (Columbia, MO); Singh, Prahlad (Columbia, MO); Ketring, Alan R. (Columbia, MO)

    1995-01-01

    The method of treating liquid waste in a media is accomplished by exposing the media to phosphinimines and sequestering .sup.99 Tc from the media by the phosphinimine (PN) functionalities. The system for treating the liquid waste in the media includes extraction of .sup.99 TcO.sub.4.sup.- from aqueous solutions into organic solvents or mixed organic/polar media, extraction of .sup.99 Tc from solutions on a solid matrix by using a container containing PN functionalities on solid matrices including an inlet and outlet for allowing flow of media through an immobilized phosphinimine ligand system contained within the container. Also, insoluble suspensions of phosphinimine functionalities on solid matrices in liquid solutions or present on supported liquid membranes (SLM) can be used to sequester .sup.99 Tc from those liquids.

  11. A Conceptual Model for Floodplains in the Sacramento-San Joaquin Delta

    E-Print Network [OSTI]

    Opperman, Jeffrey J.

    2012-01-01

    Biology Moyle PB, Baxter RD, Sommer TR, Foin TC, Matern SA.Society. p 83–138. Feyrer F, Sommer T, Harrell W. 2006a.2):115–126. Feyrer F, Sommer T, Harrell W. 2006b. Managing

  12. Embryonic and Larval Development of Sacramento Splittail Pogonichthys macrolepidotus

    E-Print Network [OSTI]

    Deng, Xin; Teh, Swee J.; Doroshov, Serge I.; Hung, Silas S. O.

    2012-01-01

    p. Moyle PB, Baxter RD, Sommer T, Foin TC, Mater SA. 2004.66:797–816. Feyrer F, Sommer TR, Baxter R. 2005. Spatial-KS): Allen Press. p 11–22. Sommer T, Baxter R, Herbold B.

  13. Habitat Variability and Complexity in the Upper San Francisco Estuary

    E-Print Network [OSTI]

    Moyle, Peter B; Lund, Jay R.; Bennett, William A; Fleenor, William E.

    2010-01-01

    uc/item/0d52737t. Grimaldo LF, Sommer T, Van Ark N, Joes G,Science Moyle PB, Baxter RD, Sommer T, Foin TC, Matern SA.University Press. p 141-170. Sommer TR, Nobriga ML, Harrell

  14. Volatility literature of chlorine, iodine, cesium, strontium, technetium, and rhenium; technetium and rhenium volatility testing

    SciTech Connect (OSTI)

    Langowski, M.H.; Darab, J.G.; Smith, P.A.

    1996-03-01

    A literature review pertaining to the volatilization of Sr, Cs, Tc (and its surrogate Re), Cl, I and other related species during the vitrification of Hanford Low Level Waste (LLW) streams has been performed and the relevant information summarized. For many of these species, the chemistry which occurs in solution prior to the waste stream entering the melter is important in dictating their loss at higher temperatures. In addition, the interactive effects between the species being lost was found to be important. A review of the chemistries of Tc and Re was also performed. It was suggested that Re would indeed act as an excellent surrogate for Tc in non-radioactive materials testing. Experimental results on Tc and Re loss from sodium aluminoborosilicate melts of temperatures ranging from 900--1350{degrees}C performed at PNL are reported and confirm that Re behaves in a nearly identical manner to that of technetium.

  15. Integrated Manhattan Project for Excellence in Radiochemistry (IMPER)

    SciTech Connect (OSTI)

    Lewis, Jason

    2014-03-27

    Accomplishments are reported in these areas: single step radiolabeling of peptides with fluorine-18; photoreduction of 99Tc pertechnetate by nanometer-sized metal oxides for environmental remediation; synthesis and characterization of multi-modal CNT imaging constructs.

  16. Superconductivity with Stripes | Advanced Photon Source

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

    structure in high-Tc superconductors was manipulated in high-pressure experiments at the APS. The physics of low-temperature superconductivity is fairly well understood, but the...

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

    SciTech Connect (OSTI)

    Ekechukwu, A.A.

    2002-05-10

    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.

  18. The Annals of Statistics 2012, Vol. 40, No. 6, 30313049

    E-Print Network [OSTI]

    Mueller, Uschi

    U. MÜLLER1 AND ANTON SCHICK2 Michigan State University, Texas A&M University and Binghamton. SCHICK for the full model there corresponds the complete case statistic Tc = tN (Xi1 ,Yi1,...,XiN ,Yi

  19. Aggregation Protocols for High Rate, Low Delay Data Collection in Sensor Networks

    E-Print Network [OSTI]

    Saskatchewan, University of

    of transmitted packets, aggregation can reduce energy usage, increase the achievable data collection rate numbers of packets, as To appear in Proc. IFIP/TC6 Networking 2009, Aachen, Germany, May 2009. This work

  20. Journal of Environmental Protection, 2013, 4, 333-343 doi:10.4236/jep.2013.44040 Published Online April 2013 (http://www.scirp.org/journal/jep)

    E-Print Network [OSTI]

    (TDS), true color (TC), pH, iron (Fe), fecal coliform (FC), dissolved oxygen (DO), and turbidity (TUR, agricul- tural, mining and urban development) can be potential sources of pollutants, which impact

  1. Method for treating liquid wastes

    DOE Patents [OSTI]

    Katti, K.V.; Volkert, W.A.; Singh, P.; Ketring, A.R.

    1995-12-26

    The method of treating liquid waste in a media is accomplished by exposing the media to phosphinimines and sequestering {sup 99}Tc from the media by the phosphinimine (PN) functionalities. The system for treating the liquid waste in the media includes extraction of {sup 99}TcO{sub 4}{sup {minus}} from aqueous solutions into organic solvents or mixed organic/polar media, extraction of {sup 99}Tc from solutions on a solid matrix by using a container containing PN functionalities on solid matrices including an inlet and outlet for allowing flow of media through an immobilized phosphinimine ligand system contained within the container. Also, insoluble suspensions of phosphinimine functionalities on solid matrices in liquid solutions or present on supported liquid membranes (SLM) can be used to sequester {sup 99}Tc from those liquids. 6 figs.

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

    E-Print Network [OSTI]

    Sobel, Adam

    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. ...

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

    E-Print Network [OSTI]

    Klima, Kelly

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

  4. Increase in the Intensity of Postmonsoon Bay of Bengal Tropical Cyclones

    SciTech Connect (OSTI)

    Balaguru, Karthik; Taraphdar, Sourav; Leung, Lai-Yung R.; Foltz, Gregory R.

    2014-05-28

    The post-monsoon (October-November) tropical cyclone (TC) season in the Bay of Bengal has spawned many of the deadliest storms in recorded history. Here it is shown that the intensity of post-monsoon Bay of Bengal TCs, and the contribution of major TCs to total TC power, increased during 1981-2010. It is found that changes in environmental parameters are responsible for the observed increases in TC intensity. Increases in sea surface temperature and upper ocean heat content made the ocean more conducive to TC development, while enhanced convective instability made the atmosphere more favorable for the growth of TCs. The largest changes in the atmosphere and ocean occurred in the eastern Bay of Bengal, where nearly all major TCs form. These changes are part of positive linear trends, suggesting that the intensity of post-monsoon Bay of Bengal TCs may continue to increase in the future.

  5. Standard Methods of Characterizing Performance of Fan Filter Units, Version 3.0

    E-Print Network [OSTI]

    Xu, Tengfang

    2007-01-01

    LBNL-62118 ASHRAE. 1999. ANSI/ASHRAE Standard 51-1999. Alsoin 1953, IEST is an ANSI-accredited standard-developingAdministrator of the ANSI-accredited US TAG to ISO/TC 209;

  6. Summary - Remedial System Performance Improvement for the 200...

    Office of Environmental Management (EM)

    a lesser extent technetium-99 (Tc-99). The groundwater extraction system consists of ten wells with capacity of 7 to 60 gallons per minute. The Soil Vapor Extraction (SVE) is...

  7. 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]

    Stadler, Michael

    2009-01-01

    SOFC)..Viability PVPS R&D RT SCE SoCal SOFC tC TOU UL UPS VRB WACSolid-Oxide Fuel Cell (SOFC) SOFC is a promising technology

  8. 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]

    Stadler, Michael

    2009-01-01

    SOFC) .Viability PVPS R&D RT SCE SoCal SOFC tC TOU UL UPS VRB WACSolid-Oxide Fuel Cell (SOFC) SOFC is a promising technology

  9. "I want some fusion soon" Dale M. Meade

    E-Print Network [OSTI]

    Technology Features - High Power density ~5 MW/m3 - Hi Tc Superconductors - Neutron Resistant >150 dpa Stellarator 1996 Tokamak 1969 (T-3) Reversed Field Pinch(Te) 2000 Field Reversed Configuration 1983

  10. Hurricane risk analysis: A review on the physically-based approach

    E-Print Network [OSTI]

    Lin, Ning

    This paper reviews recent studies that take a physically-based approach to better assess and manage hurricane risk. Such a methodology includes three components: modeling the storm climatology (which defines TC risk in ...

  11. Short communication Single crystal X-ray characterization of the incommensurate mod-

    E-Print Network [OSTI]

    Boyer, Edmond

    in the high Tc superconductor Bi2Sr2CaCu2O8. P.-A. Albouy(1) , R. Moret(1) , M. Potel(2) ,P.Gougeon(2), J, Classification Physics Abstracts 61.50 - 74.70V Since the discovery of the bismuth based high Tc superconductors-cooled to room temperature. Single crystals separated from the melt were found to be superconductors with zero

  12. tchen@engr.smu.edu Trends in Viruses

    E-Print Network [OSTI]

    Chen, Thomas M.

    .1 B $1.0 B *estimated by Computer Economics 2001 #12;TC/IEEE/10-16-03 SMU Engineering p. 5 · Viruses virus/worm attacks 82% 83% 90% 85% 94% *2003 CSI/FBI Computer Crime and Security Survey 85% 82% #12;TCTom Chen SMU tchen@engr.smu.edu Trends in Viruses and Worms #12;TC/IEEE/10-16-03 SMU Engineering p

  13. Equation of state of strongly coupled quark--gluon plasma -- Path integral Monte Carlo results

    E-Print Network [OSTI]

    V. S. Filinov; M. Bonitz; Y. B. Ivanov; V. V. Skokov; P. R. Levashov; V. E. Fortov

    2009-05-04

    A strongly coupled plasma of quark and gluon quasiparticles at temperatures from $ 1.1 T_c$ to $3 T_c$ is studied by path integral Monte Carlo simulations. This method extends previous classical nonrelativistic simulations based on a color Coulomb interaction to the quantum regime. We present the equation of state and find good agreement with lattice results. Further, pair distribution functions and color correlation functions are computed indicating strong correlations and liquid-like behavior.

  14. z=0 z=0 z=0 Steam-turbin Condenser LP-pump

    E-Print Network [OSTI]

    Skogestad, Sigurd

    ¡ ¢£ ¤ ¥§¦ ¨ © ¥£ ¡ £ ¨ © ¦ ¦ ¡ £ ¨ © ¦ ¦ ¥ ¦ © © ¡ ¥ ¥ £ ¦ ¡ ! ¦ " ©# £ $ ¤ #12; 4 ¡ 3 @ ¢ 2 6 3 F 4 9 7 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 Combustor Fuel compressor Steam-turbine HP-valve valve LP- drum Evaporator #12; F 4 9 7 ¢ D ¡ 2 B@ 9 7 6

  15. 21. Khaykovich, B. et al. Vortex-lattice phase transitions in Bi2Sr2CaCu2O8 crystals with different oxygen stoichiometry. Phys. Rev. Lett. 76, 25552558 (1996).

    E-Print Network [OSTI]

    Zeldov, Eli

    1996-01-01

    . Williams, G. A. Vortex-loop phase transitions in liquid helium, cosmic strings, and high-Tc super the discovery of ®rst-order inverse melting of the lattice formed by magnetic ¯ux lines in a high-temperature of magnetic ¯ux lattice melting and decomposition in the high-Tc superconductor Bi2.15Sr1.95CaCu2O8+x. Nature

  16. VOLUME 82, NUMBER 6 P H Y S I C A L R E V I E W L E T T E R S 8 FEBRUARY 1999 Vortex-Loop Phase Transitions in Liquid Helium, Cosmic Strings,

    E-Print Network [OSTI]

    Williams, Gary A.

    Transitions in Liquid Helium, Cosmic Strings, and High-Tc Superconductors Gary A. Williams Department a increases as the temperature is increased, and the density is finally driven to zero at Tc by loopsVOLUME 82, NUMBER 6 P H Y S I C A L R E V I E W L E T T E R S 8 FEBRUARY 1999 Vortex-Loop Phase

  17. Multifragmentation and nuclear phase transitions (liquid-fog and liquid-gas)

    E-Print Network [OSTI]

    V. A. Karnaukhov; H. Oeschler; S. P. Avdeyev; V. K. Rodionov; A. V. Simomenko; V. V. Kirakosyan; A. Budzanowski; W. Karcz; I. Skwirczynska; E. A. Kuzmin; E. Norbeck; A. S. Botvina

    2003-10-10

    Thermal multifragmentation of hot nuclei is interpreted as the nuclear liquid-fog phase transition. The charge distributions of the intermediate mass fragments produced in p(3.6 GeV) + Au and p(8.1 GeV) + Au collisions are analyzed within the statistical multifragmentation model with the critical temperature for the nuclear liquid-gas phase transition Tc as a free parameter. The analysis presented here provides strong support for a value of Tc > 15 MeV.

  18. Search for Techniparticles in e+jets Events at D0

    E-Print Network [OSTI]

    Baringer, Philip S.; Bean, Alice; Hensel, Carsten; Moulik, Tania; Wilson, Graham Wallace; Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.

    2007-05-31

    the longitudinal components of the W and Z bosons, mak- ing them massive. An additional gauge interaction, called extended TC [3], couples standard model (SM) fermions and technifermions to provide a mechanism for generating quark and lepton masses. Extensions... the longitudinal components of the W and Z bosons, mak- ing them massive. An additional gauge interaction, called extended TC [3], couples standard model (SM) fermions and technifermions to provide a mechanism for generating quark and lepton masses. Extensions...

  19. Detection of mycobacterial siderophores and implications for diagnostics

    E-Print Network [OSTI]

    McBride, Nicholas S.

    2012-11-13

    ....................................................................................................................................................86  Figure  37:  Titration  of  DFMJ  into  a  300  µM  solution  of  Fe(acac)3  at  0.2  V/s  in  DMSO,  0.1  M  LiCl. ...................87  Figure  38:  Effectiveness  of  Sep-­?Pak  tC18... -­?Pak  tC18  eluates  from  the  bovine  urine  samples  from  a  single  urine  pool  and  treated  as  defined  in  Table  10;  spectrophotometric  absorbance  in  0.75  mL  methanol  (A)  and  CV...

  20. Search for VH and Technicolor Production in the qqbb Final State Using the RunII D0 Detector

    E-Print Network [OSTI]

    Clutter, Justace Randall

    2010-04-28

    upper limit of 16.7 pb was set for a Higgs boson mass of 125 GeV/c2 and 24.6 pb was set for a Higgs boson mass of 135 GeV/c2. The same data set was used to place limits on the Technicolor process ?TC? W?TC where the technirho mass was fixed to 240 GeV/c2...

  1. Mesoscopic Effects in Bose-Einstein Condensate Fluctuations of an Ideal Gas in a Box 

    E-Print Network [OSTI]

    Dorfman, Konstantin Evgenievich

    2009-05-15

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 ix LIST OF FIGURES FIGURE Page 1 Negative binomial distribution of the number of noncondensed atoms for an ideal Bose gas in a box with total number of particles N = 10000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2... Temperature scaling of the normalization factor, i.e. ?(N ?n) for an ideal Bose gas (N = 100 - grey line, N = 1000 - black line). Temperature is normalized by the standard thermodynamic limit critical value Tc(N = ?) that differs from the finite-size Tc(N...

  2. InternationalJournalof Infraredand MillimeterWaves, Vol. 17, No. 10, 1996 ELECTRICAL AND INFRARED STUDY OF

    E-Print Network [OSTI]

    Tanner, David B.

    is a semiconductor, the ceramic Bi2Sr2CalCU20 8 sample prepared after annealing at 820°C for 240 hours shows a Tc and annealing at 820°C for 240 hours shows a drop of Tc by 5 K. The infrared spectra of superconducting ceramic on a stainless steel plate and pressed quickly by another steel block, resulting in a disk of 2 mm thick

  3. High-Precision Thermodynamics and Hagedorn Density of States

    E-Print Network [OSTI]

    Harvey B. Meyer

    2009-05-26

    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.

  4. Technetium Immobilization Forms Literature Survey

    SciTech Connect (OSTI)

    Westsik, Joseph H.; Cantrell, Kirk J.; Serne, R. Jeffrey; Qafoku, Nikolla

    2014-05-01

    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.

  5. Characterization of Technetium Speciation in Cast Stone

    SciTech Connect (OSTI)

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

    2013-11-11

    This report describes the results from laboratory tests performed at Pacific Northwest National Laboratory (PNNL) for the U.S. Department of Energy (DOE) EM-31 Support Program (EMSP) subtask, “Production and Long-Term Performance of Low Temperature Waste Forms” to provide additional information on technetium (Tc) speciation characterization in the Cast Stone waste form. To support the use of Cast Stone as an alternative to vitrification for solidifying low-activity waste (LAW) and as the current baseline waste form for secondary waste streams at the Hanford Site, additional understanding of Tc speciation in Cast Stone is needed to predict the long-term Tc leachability from Cast Stone and to meet the regulatory disposal-facility performance requirements for the Integrated Disposal Facility (IDF). Characterizations of the Tc speciation within the Cast Stone after leaching under various conditions provide insights into how the Tc is retained and released. The data generated by the laboratory tests described in this report provide both empirical and more scientific information to increase our understanding of Tc speciation in Cast Stone and its release mechanism under relevant leaching processes for the purpose of filling data gaps and to support the long-term risk and performance assessments of Cast Stone in the IDF at the Hanford Site.

  6. Electrode Induced Removal and Recovery of Uranium (VI) from Acidic Subsurfaces

    SciTech Connect (OSTI)

    Gregory, Kelvin

    2013-08-12

    The overarching objective of this research is to provide an improved understanding of how aqueous geochemical conditions impact the removal of U and Tc from groundwater and how engineering design may be utilized to optimize removal of these radionuclides. Experiments were designed to address the unique conditions in Area 3 of ORNL while also providing broader insight into the geochemical effectors of the removal rates and extent for U and Tc. The specific tasks of this work were to: 1) quantify the impact of common aqueous geochemical and operational conditions on the rate and extent of U removal and recovery from water, 2) investigate the removal of Tc with polarized graphite electrode, and determine the influence of geochemical and operational conditions on Tc removal and recovery, 3) determine whether U and Tc may be treated simultaneous from Area 3 groundwater, and examine the bench-scale performance of electrode-based treatment, and 4) determine the capacity of graphite electrodes for U(VI) removal and develop a mathematical, kinetic model for the removal of U(VI) from aqueous solution. Overall the body of work suggests that an electrode-based approach for the remediation of acidic subsurface environments, such as those observed in Area 3 of ORNL may be successful for the removal for both U(VI) and Tc. Carbonaceous (graphite) electrode materials are likely to be the least costly means to maximize removal rates and efficiency by maximizing the electrode surface area.

  7. Spectroelectrochemical Sensor for Pertechnetate Applicable to Hanford and Other DOE Sites

    SciTech Connect (OSTI)

    Heineman, William R; Seliskar, Carl J; Bryan, Samuel A

    2012-09-18

    The general aim of our work funded by DOE is the design and implementation of a new sensor technology that offers unprecedented levels of specificity needed for analysis of the complex chemical mixtures found at DOE sites nationwide. The specific goal of this project was the development of a sensor for technetium (Tc) that is applicable to characterizing and monitoring the vadose zone and associated subsurface water at the Hanford Site and other DOE sites. The concept for the spectroelectrochemical sensor is innovative and represents a breakthrough in sensor technology. The sensor combines three modes of selectivity (electrochemistry, spectroscopy, and selective partitioning) into a single sensor to substantially improve selectivity. The sensor consists of a basic spectroelectrochemical configuration that we have developed under our previous DOE grants: a waveguide with an optically transparent electrode (OTE) that is coated with a thin chemically-selective film that preconcnetrates the analyte. The key to adapting this generic sensor to detect TcO4- and Tc complexes lies in the development of chemically-selective films that preconcentrate the analyte and, when necessary, chemically convert it into a complex with electrochemical and spectroscopic properties appropriate for sensing. Significant accomplishments were made in the general areas of synthesis and characterization of polymer films that efficiently preconcentrate the analyte, development and characterization of sensors and associated instrumentation, and synthesis and characterization of relevant Re and Tc complexes. Two new polymer films for the preconcentration step in the sensor were developed: partially sulfonated polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene (SSEBS) and phosphine containing polymer films. The latter was a directed polymer film synthesis that combined the proper electrostatic properties to attract TcO4- and also incorporated a suitable ligand for covalently trapping a lower oxidation state Tc complex within the film for spectroelectrochemical detection. Spectroelectrochemical sensors were developed and demonstrated, first using [Re(dmpe)3]+ (dmpe = 1,2-bis(dimethylphosphino)ethane) as a model compound with the non-radioactive Re surrogate for radioactive Tc. A fluorescence based spectroelectrochemical sensor for [Tc(dmpe)3]+/2+was then developed using SSEBS as the preconcentrating film. Portable instrumentation for the fluorescence spectroelectrochemical sensor was fabricated and tested. The effects of components in Hanford subsurface water on sensor performance with a detailed evaluation of the effect of total ionic strength on sensitivity demonstrated the ability to use the spectroelectrochemical sensor on representative water samples. A variety Re and Tc complexes were synthesized and characterized to explore the best ligands to use for detection of Tc. A lower oxidation-state Tc-complex [Tc(dmpe)3]+ (dmpe = 1,2-bis(dimethylphosphino)ethane) was synthesized to use as a model compound for developing Tc sensors. [Tc(dmpe)3]+/2+ exhibited the important properties of solution fluorescence at ambient temperatures and reversible electrochemistry. A range of low oxidation state dioxo Re- and Tc-complexes of formulae [ReO2(py)4]+, [ReO2(CN)4]-, [ReO2(P-P)2]+ and [ReO2(S-S)2]+ (py = pyridine) were synthesized. An exhaustive study of the spectroscopy and electrochemistry of Re(diimine)(CO)3(halide) complexes was performed. These complexes served as models for the Tc(diimine)(CO)3(halide) complexes that were readily formed from Tc(CO)x(halides)6-x complexes which are themselves constituents of tank waste samples from Hanford. Of particular interest were new Tc complexes with the +5 and +6 oxidation states. Tetrabutylammonium salt of tetrachlorooxotechnetate(V), (nBu4N)[TcOCl4] (I) was synthesized and the structure determined. [TcO2(CN)4]3- , [TcO2(en)2]2+ , [TcO2(im)4]+, and [TcO2(py)4]+ (en = ethylenediamine; im = imidazole; py = pyridine) complexes were synthesized and solution and solid state 99Tc NMR spectra were acquired giving

  8. Investigations Into the Nature of Alkaline Soluble, Non-Pertechnetate Technetium

    SciTech Connect (OSTI)

    Rapko, Brian M.; Bryan, Samuel A.; Chatterjee, Sayandev; Edwards, Matthew K.; Levitskaia, Tatiana G.; Peterson, James M.; Peterson, Reid A.; Sinkov, Sergey I.

    2013-11-14

    This report summarizes work accomplished in fiscal year (FY) 2013, exploring the chemistry of a low-valence technetium(I) 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. Various aspects of FY 2013’s work were sponsored both by Washington River Protection Solutions and the U.S. Department of Energy’s Office of River Protection; because of this commonality, both sponsors’ work is summarized in this report. There were three tasks in this FY 2013 study. The first task involved examining the speciation of [(CO)3Tc(H2O)3]+ in alkaline solution by 99Tc nuclear magnetic resonance spectroscopy. The second task involved the purchase and installation of a microcalorimeter suitable to study the binding affinity of [(CO)3Tc(H2O)3]+ with various inorganic and organic compounds relevant to Hanford tank wastes, although the actual measure of such binding affinities is scheduled to occur in future FYs. The third task involved examining the chemical reactivity of [(CO)3Tc(H2O)3]+ as relevant to the development of a [(CO)3Tc(H2O)3]+ spectroelectrochemical sensor based on fluorescence spectroscopy.

  9. High-Resolution Modeling to Assess Tropical Cyclone Activity in Future Climate Regimes

    SciTech Connect (OSTI)

    Lackmann, Gary

    2013-06-10

    Applied research is proposed with the following objectives: (i) to determine the most likely level of tropical cyclone intensity and frequency in future climate regimes, (ii) to provide a quantitative measure of uncertainty in these predictions, and (iii) to improve understanding of the linkage between tropical cyclones and the planetary-scale circulation. Current mesoscale weather forecasting models, such as the Weather Research and Forecasting (WRF) model, are capable of simulating the full intensity of tropical cyclones (TC) with realistic structures. However, in order to accurately represent both the primary and secondary circulations in these systems, model simulations must be configured with sufficient resolution to explicitly represent convection (omitting the convective parameterization scheme). Most previous numerical studies of TC activity at seasonal and longer time scales have not utilized such explicit convection (EC) model runs. Here, we propose to employ the moving nest capability of WRF to optimally represent TC activity on a seasonal scale using a downscaling approach. The statistical results of a suite of these high-resolution TC simulations will yield a realistic representation of TC intensity on a seasonal basis, while at the same time allowing analysis of the feedback that TCs exert on the larger-scale climate system. Experiments will be driven with analyzed lateral boundary conditions for several recent Atlantic seasons, spanning a range of activity levels and TC track patterns. Results of the ensemble of WRF simulations will then be compared to analyzed TC data in order to determine the extent to which this modeling setup can reproduce recent levels of TC activity. Next, the boundary conditions (sea-surface temperature, tropopause height, and thermal/moisture profiles) from the recent seasons will be altered in a manner consistent with various future GCM/RCM scenarios, but that preserves the large-scale shear and incipient disturbance activity. This will allow (i) a direct comparison of future TC activity that could be expected for an active or inactive season in an altered climate regime, and (ii) a measure of the level of uncertainty and variability in TC activity resulting from different carbon emission scenarios.

  10. Cast Stone Oxidation Front Evaluation: Preliminary Results For Samples Exposed To Moist Air

    SciTech Connect (OSTI)

    Langton, C. A.; Almond, P. M.

    2013-11-26

    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

  11. Technetium Incorporation in Glass for the Hanford Tank Waste Treatment and Immobilization Plant

    SciTech Connect (OSTI)

    Kruger, Albert A.; Kim, Dong Sang

    2015-01-14

    A priority of the United States Department of Energy (U.S. DOE) is to dispose of nuclear wastes accumulated in 177 underground tanks at the Hanford Nuclear Reservation in eastern Washington State. These nuclear wastes date from the Manhattan Project of World War II and from plutonium production during the Cold War. The DOE plans to separate high-level radioactive wastes from low activity wastes and to treat each of the waste streams by vitrification (immobilization of the nuclides in glass) for disposal. The immobilized low-activity waste will be disposed of here at Hanford and the immobilized high-level waste at the national geologic repository. Included in the inventory of highly radioactive wastes is large volumes of 99Tc (?9 × 10E2 TBq or ?2.5 × 104 Ci or ?1500 kg). A problem facing safe disposal of Tc-bearing wastes is the processing of waste feed into in a chemically durable waste form. Technetium incorporates poorly into silicate glass in traditional glass melting. It readily evaporates during melting of glass feeds and out of the molten glass, leading to a spectrum of high-to-low retention (ca. 20 to 80%) in the cooled glass product. DOE-ORP currently has a program at Pacific Northwest National Laboratory (PNNL), in the Department of Materials Science and Engineering at Rutgers University and in the School of Mechanical and Materials Engineering at Washington State University that seeks to understand aspects of Tc retention by means of studying Tc partitioning, molten salt formation, volatilization pathways, and cold cap chemistry. Another problem involves the stability of Tc in glass in both the national geologic repository and on-site disposal after it has been immobilized. The major environmental concern with 99Tc is its high mobility in addition to a long half-life (2.1×105 yrs). The pertechnetate ion (TcO4-) is highly soluble in water and does not adsorb well onto the surface of minerals and so migrates nearly at the same velocity as groundwater. Long-term corrosion of glass waste forms is an area of current interest to the DOE, but attention to the release of Tc from glass has been little explored. It is expected that the release of Tc from glass should be highly dependent on the local glass structure as well as the chemistry of the surrounding environment, including groundwater pH. Though the speciation of Tc in glass has been previously studied, and the Tc species present in waste glass have been previously reported, environmental Tc release mechanisms are poorly understood. The recent advances in Tc chemistry that have given rise to an understanding of incorporation in the glass giving rise to significantly higher single-pass retention during vitrification are presented. Additionally, possible changes to the baseline flowsheet that allow for relatively minor volumes of Tc reporting to secondary waste treatment will be discussed.

  12. Technetium Inventory, Distribution, and Speciation in Hanford Tanks

    SciTech Connect (OSTI)

    Serne, R. Jeffrey; Rapko, Brian M.

    2014-05-02

    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.

  13. RHENIUM SOLUBILITY IN BOROSILICATE NUCLEAR WASTE GLASS IMPLICATIONS FOR THE PROCESSING AND IMMOBILIZATION OF TECHNETIUM-99 (AND SUPPORTING INFORMATION WITH GRAPHICAL ABSTRACT)

    SciTech Connect (OSTI)

    AA KRUGER; A GOEL; CP RODRIGUEZ; JS MCCLOY; MJ SCHWEIGER; WW LUKENS; JR, BJ RILEY; D KIM; M LIEZERS; P HRMA

    2012-08-13

    The immobilization of 99Tc in a suitable host matrix has proved a challenging task for researchers in the nuclear waste community around the world. At the Hanford site in Washington State in the U.S., the total amount of 99Tc in low-activity waste (LAW) is {approx} 1,300 kg and the current strategy is to immobilize the 99Tc in borosilicate glass with vitrification. In this context, the present article reports on the solubility and retention of rhenium, a nonradioactive surrogate for 99Tc, in a LAW sodium borosilicate glass. Due to the radioactive nature of technetium, rhenium was chosen as a simulant because of previously established similarities in ionic radii and other chemical aspects. The glasses containing target Re concentrations varying from 0 to10,000 ppm by mass were synthesized in vacuum-sealed quartz ampoules to minimize the loss of Re by volatilization during melting at 1000 DC. The rhenium was found to be present predominantly as Re7 + in all the glasses as observed by X-ray absorption near-edge structure (XANES). The solubility of Re in borosilicate glasses was determined to be {approx}3,000 ppm (by mass) using inductively coupled plasma-optical emission spectroscopy (ICP-OES). At higher rhenium concentrations, some additional material was retained in the glasses in the form of alkali perrhenate crystalline inclusions detected by X-ray diffraction (XRD) and laser ablation-ICP mass spectrometry (LA-ICP-MS). Assuming justifiably substantial similarities between Re7 + and Tc 7+ behavior in this glass system, these results implied that the processing and immobilization of 99Tc from radioactive wastes should not be limited by the solubility of 99Tc in borosilicate LAW glasses.

  14. Mechanistic, Mutational, and Structural Evaluation of a Taxus Phenylalanine Aminomutase

    SciTech Connect (OSTI)

    Feng, Lei; Wanninayake, Udayanga; Strom, Susan; Geiger, James; Walker, Kevin D. (MSU)

    2014-10-02

    The structure of a phenylalanine aminomutase (TcPAM) from Taxus canadensis has been determined at 2.4 {angstrom} resolution. The active site of the TcPAM contains the signature 4-methylidene-1H-imidazol-5(4H)-one prosthesis, observed in all catalysts of the class I lyase-like family. This catalyst isomerizes (S)-{alpha}-phenylalanine to the (R)-{beta}-isomer by exchange of the NH{sub 2}/H pair. The stereochemistry of the TcPAM reaction product is opposite of the (S)-{beta}-tyrosine made by the mechanistically related tyrosine aminomutase (SgTAM) from Streptomyces globisporus. Since TcPAM and SgTAM share similar tertiary- and quaternary-structures and have several highly conserved aliphatic residues positioned analogously in their active sites for substrate recognition, the divergent product stereochemistries of these catalysts likely cannot be explained by differences in active site architecture. The active site of the TcPAM structure also is in complex with (E)-cinnamate; the latter functions as both a substrate and an intermediate. To account for the distinct (3R)-{beta}-amino acid stereochemistry catalyzed by TcPAM, the cinnamate skeleton must rotate the C{sub 1}-C{sub {alpha}} and C{sub ipso}-C{sub {beta}} bonds 180{sup o} in the active site prior to exchange and rebinding of the NH{sub 2}/H pair to the cinnamate, an event that is not required for the corresponding acrylate intermediate in the SgTAM reaction. Moreover, the aromatic ring of the intermediate makes only one direct hydrophobic interaction with Leu-104. A L104A mutant of TcPAM demonstrated an 1.5-fold increase in k{sub cat} and a decrease in K{sub M} values for sterically demanding 3'-methyl-{alpha}-phenylalanine and styryl-{alpha}-alanine substrates, compared to the kinetic parameters for TcPAM. These parameters did not change significantly for the mutant with 4'-methyl-{alpha}-phenylalanine compared to those for TcPAM.

  15. Radiolabeled technetium chelates for use in renal function determinations

    DOE Patents [OSTI]

    Fritzberg, Alan (Edmonds, WA); Kasina, Sudhaker (Kirkland, WA); Johnson, Dennis L. (Las Cruces, NM)

    1994-01-01

    The present invention is directed to novel radiopharmaceutical imaging agents incorporating Tc-99m as a radiolabel. In particular, the novel imaging agents disclosed herein have relatively high renal extraction efficiencies, and hence are useful for conducting renal function imaging procedures. The novel Tc-99m compounds of a present invention have the following general formula: ##STR1## wherein X is S or N; and wherein Y is --H or wherein Y is ##STR2## and where R.sub.1 is --H, --CH.sub.3, or --CH.sub.2 CH.sub.3 ; R.sub.2 is --H, --CH.sub.2 CO.sub.2 H, --CH.sub.2 CONH.sub.2, --CH.sub.2 CH.sub.2 CO.sub.2 H, --CH.sub.2 CH.sub.2 CONH.sub.2, --CH.sub.3, --CH.sub.2 CH.sub.3, CH.sub.2 C.sub.6 H.sub.5, or --CH.sub.2 OH; and Z is --H, --CO.sub.2 H, --CONH.sub.2, --SO.sub.3 H, --SO.sub.2 NH.sub.2, or --CONHCH.sub.2 CO.sub.2 H; and the Tc is Tc-99m; and water-soluble salts thereof. Of the foregoing, the presently preferred Tc-99m compound of the present invention is Tc-99m-mercaptoacetylglycylglycylglycine (Tc-99m-MAGGG). The present invention is also directed to novel chelating agents that may be reacted with Tc-99m to form the foregoing compounds. Such novel chelating agents have the following general formula. ##STR3## where X and Y have the same definitions as above, and wherein Y' is --H.sub.2 when X is N, or wherein Y' is --H, or a suitable protective group such as --COCH.sub.3, --COC.sub.6 H.sub.5, --CH.sub.2 NHCOCH.sub.3, --COCF.sub.3, or --COCH.sub.2 OH when X is S. The present invention also provides methods for preparing and using the novel Tc-99m compounds.

  16. Radiolabeled technetium chelates for use in renal function determinations

    DOE Patents [OSTI]

    Fritzberg, Alan (Edmonds, WA); Kasina, Sudhakar (Kirkland, WA); Johnson, Dennis L. (Las Cruces, NM)

    1990-01-01

    The present invention is directed to novel radiopharmaceutical imaging agents incorporating Tc-99m as a radiolabel. In particular, the novel imaging agents disclosed herein have relatively high renal extraction efficiencies, and hence are useful for conducting renal function imaging procedures. The novel Tc-99m compounds of a present invention have the following general formula: ##STR1## wherein X is S or N; and wherein Y is--H or wherein Y is ##STR2## and where R.sub.1 is --H, --CH.sub.3, or --CH.sub.2 CH.sub.3 ; R.sub.2 is --H, --CH.sub.2 CO.sub.2 H, --CH.sub.2 CONH.sub.2, --CH.sub.2 CH.sub.2 CO.sub.2 H, --CH.sub.2 CH.sub.2 CONH.sub.2, --CH.sub.3, --CH.sub.2 CH.sub.3, CH.sub.2 C.sub.6 H.sub.5, or --CH.sub.2 OH; and Z is --H, --CO.sub.2 H, --CONH.sub.2, --SO.sub.3 H, --SO.sub.2 NH.sub.2, or --CONHCH.sub.2 CO.sub.2 H; and the Tc is Tc-99m; and water-soluble salts thereof. Of the foregoing, the presently preferred Tc-99m compound of the present invention is Tc-99m-mercaptoacetylglycylglycylglycine (Tc-99m-MAGGG). The present invention is also directed to novel chelating agents that may be reacted with Tc-99m to form the foregoing compounds. Such novel chelating agents have the following general formula. ##STR3## where X and Y have the same definitions as above, and wherein Y' is --H.sub.2 when X is N, or wherein Y' is --H, or a suitable protective group such as --COCH.sub.3, --COC.sub.6 H.sub.5, --CH.sub.2 NHCOCH.sub.3, --COCF.sub.3, or --COCH.sub.2 OH when X is S. The present invention also provides methods for preparing and using the novel Tc-99m compounds.

  17. GLASSES CONTAINING IRON (II III) OXIDES FOR IMMOBILIZATION OF RADIOACTIVE TECHNETIUM

    SciTech Connect (OSTI)

    KRUGER AA; HEO J; XU K; CHOI JK; HRMA PR; UM W

    2011-11-07

    Technetium-99 (Tc-99) has posed serious environmental threats as US Department of Energy's high-level waste. This work reports the vitrification of Re, as surrogate for Tc-99, by iron-borosilicate and iron-phosphate glasses, respectively. Iron-phosphate glasses can dissolve Re as high as {approx} 1.2 wt. %, which can become candidate waste forms for Tc-99 disposal, while borosilicate glasses can retain less than 0.1 wt. % of Re due to high melting temperature and long melting duration. Vitrification of Re as Tc-99's mimic was investigated using iron-borosilicate and iron-phosphate glasses. The retention of Re in borosilicate glasses was less than 0.1 wt. % and more than 99 wt. % of Re were volatilized due to high melting temperature and long melting duration. Because the retention of Re in iron-phosphate glasses is as high as 1.2 wt. % and the volatilization is reduced down to {approx}50 wt. %, iron-phosphate glasses can be one of the glass waste form candidates for Tc (or Re) disposal. The investigations of chemical durability and leaching test of iron-phosphate glasses containing Re are now underway to test the performance of the waste form.

  18. Pressure-enhanced superconductivity in Eu3Bi2S4F4

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

    Luo, Yongkang; Zhai, Hui -Fei; Zhang, Pan; Xu, Zhu -An; Cao, Guang -Han; Thompson, J. D.

    2014-12-17

    The pressure effect on the newly discovered charge-transferred BiS2-based superconductor, Eu3Bi2S4F4, with a Tc of 1.5 K at ambient pressure, is investigated by transport and magnetic measurements. Accompanied with the enhancement of metallicity under pressures, the onset superconducting transition temperature increases abruptly around 1.0 GPa, reaching ~10.0 K at 2.26 GPa. Alternating current magnetic susceptibility measurements indicate that a new superconducting phase with a higher Tc emerges and dominates at high pressures. In the broad pressure window of 0.68GPa?p?2.00 GPa, the high-Tc phase coexists with the low-Tc phase. Hall effect measurements reveal a significant difference in electronic structures between themore »two superconducting phases. As a result, our work devotes the effort to establish the commonality of pressure effect on the BiS2-based superconductors, and also uncovers the importance of electron carrier density in the high-Tc phase.« less

  19. Non-Pertechnetate Technetium Sensor Research and Development

    SciTech Connect (OSTI)

    Bryan, Samuel A.; Crawford, Amanda D.; Heineman, William R.; Rapko, Brian M.; Branch, Shirmir D.

    2014-10-01

    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.

  20. Characterization of technetium-99m-L,L-ECD for brain perfusion imaging, Part 1: Pharmacology of technetium-99m ECD in nonhuman primates

    SciTech Connect (OSTI)

    Walovitch, R.C.; Hill, T.C.; Garrity, S.T.; Cheesman, E.H.; Burgess, B.A.; O'Leary, D.H.; Watson, A.D.; Ganey, M.V.; Morgan, R.A.; Williams, S.J. (E.I. Du Pont de Nemours Co., Inc., No. Billerica, MA (USA))

    1989-11-01

    Technetium-99m ethyl cysteinate dimer (({sup 99m}Tc)ECD) is a neutral, lipophilic complex which rapidly crosses the blood-brain barrier. Brain retention and tissue metabolism of ({sup 99m}Tc)ECD is dependent upon the stereochemical configuration of the complex. While both L,L and D,D enantiomers are extracted by the brain, only the L,L but not the D,D form, is metabolized and retained in the monkey brain (4.7% injected dose initially, T 1/2 greater than 24 hr). Dynamic single photon emission computed tomography imaging studies in one monkey indicates {sup 99m}Tc-L,L-ECD to be distributed in a pattern consistent with regional cerebral blood flow for up to 16 hr postinjection. Dual-labeled {sup 99m}Tc-L,L-ECD and ({sup 14}C)iodoantipyrine autoradiography studies performed 1 hr after administration show cortical gray to white matter ratios of both isotopes to be equivalent (approximately 4-5:1). These data suggest that {sup 99m}Tc-L,L-ECD will be useful for the scintigraphic assessment of cerebral perfusion in humans.

  1. Implication of protein tyrosine phosphatase 1B in MCF-7 cell proliferation and resistance to 4-OH tamoxifen

    SciTech Connect (OSTI)

    Blanquart, Christophe; Karouri, Salah-Eddine [Institut Cochin, Universite Paris Descartes, CNRS (UMR 8104), Paris (France) [Institut Cochin, Universite Paris Descartes, CNRS (UMR 8104), Paris (France); Inserm, U567, Paris (France); Issad, Tarik, E-mail: tarik.issad@inserm.fr [Institut Cochin, Universite Paris Descartes, CNRS (UMR 8104), Paris (France) [Institut Cochin, Universite Paris Descartes, CNRS (UMR 8104), Paris (France); Inserm, U567, Paris (France)

    2009-10-02

    The protein tyrosine phosphatase 1B (PTP1B) and the T-cell protein tyrosine phosphatase (TC-PTP) were initially thought to be mainly anti-oncogenic. However, overexpression of PTP1B and TC-PTP has been observed in human tumors, and recent studies have demonstrated that PTP1B contributes to the appearance of breast tumors by modulating ERK pathway. In the present work, we observed that decreasing the expression of TC-PTP or PTP1B in MCF-7 cells using siRNA reduced cell proliferation without affecting cell death. This reduction in proliferation was associated with decreased ERK phosphorylation. Moreover, selection of tamoxifen-resistant MCF-7 cells, by long-term culture in presence of 4-OH tamoxifen, resulted in cells that display overexpression of PTP1B and TC-PTP, and concomitant increase in ERK and STAT3 phosphorylation. siRNA experiments showed that PTP1B, but not TC-PTP, is necessary for resistance to 4-OH tamoxifen. Therefore, our work indicates that PTP1B could be a relevant therapeutic target for treatment of tamoxifen-resistant breast cancers.

  2. The Speed of Sound in Hadronic Matter

    E-Print Network [OSTI]

    Castorina, P; Miller, D E; Satz, H

    2009-01-01

    We calculate the speed of sound $c_s$ in an ideal gas of resonances whose mass spectrum is assumed to have the Hagedorn form $\\rho(m) \\sim m^{-a}\\exp{bm}$, which leads to singular behavior at the critical temperature $T_c = 1/b$. With $a = 4$ the pressure and the energy density remain finite at $T_c$, while the specific heat diverges there. As a function of the temperature the corresponding speed of sound initially increases similarly to that of an ideal pion gas until near $T_c$ where the resonance effects dominate causing $c_s$ to vanish as $(T_c - T)^{1/4}$. In order to compare this result to the physical resonance gas models, we introduce an upper cut-off M in the resonance mass integration. Although the truncated form still decreases somewhat in the region around $T_c$, the actual critical behavior in these models is no longer present.

  3. Deconfinement as an entropic self-destruction: a solution for the quarkonium suppression puzzle?

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

    Kharzeev, Dmitri E. [Stony Brook Univ, Department of Physics and Astronomy, NY (United States); Brookhaven National Laboratory, Department of Physics, Upton, NY (United States)

    2014-10-01

    The entropic approach to dissociation of bound states immersed in strongly coupled systems is developed. In such systems, the excitations of the bound state are often delocalized and characterized by a large entropy, so that the bound state is strongly entangled with the rest of the statistical system. If this entropy S increases with the separation r between the constituents of the bound state, S=S(r), then the resulting entropic force F=T ?S/?r (T is temperature) can drive the dissociation process. As a specific example, we consider the case of heavy quarkonium in strongly coupled quark-gluon plasma, where lattice QCD indicates a large amount of entropy associated with the heavy quark pair at temperatures 0.9Tc?T?1.5Tc (Tc is the deconfinement temperature); this entropy S(r) grows with the interquark distance r. We argue that the entropic mechanism results in an anomalously strong quarkonium suppression in the temperature range near Tc. This entropic self-destruction may thus explain why the experimentally measured quarkonium nuclear modification factor at RHIC (lower energy density) is smaller than at LHC (higher energy density), possibly resolving the “quarkonium suppression puzzle”—all of the previously known mechanisms of quarkonium dissociation operate more effectively at higher energy densities, and this contradicts the data. Moreover, we find that near Tc the entropic force leads to delocalization of the bound hadron states; we argue that this delocalization may be the mechanism underlying deconfinement.

  4. Oceanic Control of Northeast Pacific Hurricane Activity at Interannual Timescales

    SciTech Connect (OSTI)

    Balaguru, Karthik; Leung, Lai-Yung R.; Yoon, Jin-Ho

    2013-10-16

    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.

  5. Deconfinement as an entropic self-destruction: A solution for the quarkonium suppression puzzle?

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

    Kharzeev, Dmitri E.

    2014-10-02

    The entropic approach to dissociation of bound states immersed in strongly coupled systems is developed. In such systems, the excitations of the bound state are often delocalized and characterized by a large entropy, so that the bound state is strongly entangled with the rest of the statistical system. If this entropy S increases with the separation r between the constituents of the bound state, S=S(r), then the resulting entropic force F=T ?S/?r (T is temperature) can drive the dissociation process. As a specific example, we consider the case of heavy quarkonium in strongly coupled quark-gluon plasma, where lattice QCD indicatesmore »a large amount of entropy associated with the heavy quark pair at temperatures 0.9Tc ? T ? 1.5Tc (Tc is the deconfinement temperature); this entropy S(r) grows with the interquark distance r. We argue that the entropic mechanism results in an anomalously strong quarkonium suppression in the temperature range near Tc. This entropic self-destruction may thus explain why the experimentally measured quarkonium nuclear modification factor at RHIC (lower energy density) is smaller than at LHC (higher energy density), possibly resolving the “quarkonium suppression puzzle”—all of the previously known mechanisms of quarkonium dissociation operate more effectively at higher energy densities, and this contradicts the data. As a result, we find that near Tc the entropic force leads to delocalization of the bound hadron states; we argue that this delocalization may be the mechanism underlying deconfinement.« less

  6. New Magnetic confirguration in paramagnetic phase of HoCo2

    SciTech Connect (OSTI)

    Bonilla, C.M.; Calvo, I.; Herrero-Albillos, J.; Figueroa, A.I.; Castan-Guerrero, C.; Bertolome, J.; Rodriguez-Velamazan, J.A.; Schmitz, D.; Weschke, E.; Paudyal, Durga; Pecharsky, Vitalij; Gschneidner Jr, Karl; Bartolome, F.; Garcia, D.

    2012-02-23

    X-ray magnetic circular dichroism (XMCD) measurements on HoCo2 reveal the inversion of Co moment at temperatures higher than the critical temperature, Tc, showing that the net magnetization under a field of the Ho and Co sublattices remain antiparallel even above Tc. The Ho moment also changes its orientation to align antiparallel to the applied field at high temperature giving rise to a new magnetic configuration in the paramagnetic regime. Transverse susceptibility (TS) and small angle neutron scattering (SANS) measurements performed above Tc indicate the existence of sizable magnetic short-range correlated regions in HoCo2. First principles calculations based on spin polarized local-density approximation, LSDA+U havebeen performed to obtain insights on the origin of the short-range correlated volume.

  7. Dissipation and coherent effects in narrow superconducting channels 

    E-Print Network [OSTI]

    Kayali, MA; Kogan, VG; Pokrovsky, Valery L.

    2005-01-01

    ns tn. s14d In our view, a better term for this quantity is the ?phase relaxation time? which we use in what follows, but we keep the standard notation tJ. When T?Tc, tJ~1/ sTc?Td and so does tD.5 Then, the system of equations to solve takes..., the field E~v and W? ~v2; they are v independent for vtJ@1. Since tJ diverges when T?Tc, we obtain in this limit the dissipation in the normal state W? =J0 2 /2s, as expected. Ex- panding W? of Eq. s27d in the small parameter 1 /v2tJ2 and keeping...

  8. Abundance ratios of volatile vs. refractory elements in planet-harbouring stars: hints of pollution?

    E-Print Network [OSTI]

    A. Ecuvillon; G. Israelian; N. C. Santos; M. Mayor; G. Gilli

    2005-12-08

    We present the [X/H] trends as function of the elemental condensation temperature Tc in 88 planet host stars and in a volume-limited comparison sample of 33 dwarfs without detected planetary companions. We gathered homogeneous abundance results for many volatile and refractory elements spanning a wide range of Tc, from a few dozens to several hundreds kelvin. We investigate possible anomalous trends of planet hosts with respect to comparison sample stars in order to detect evidence of possible pollution events. No significant differences are found in the behaviour of stars with and without planets. This result is in agreement with a ``primordial'' origin of the metal excess in planet host stars. However, a subgroup of 5 planet host and 1 comparison sample stars stands out for having particularly high [X/H] vs. Tc slopes.

  9. Study of technetium uptake in vegetation in the vicinity of the Portsmouth Gaseous Diffusion Plant

    SciTech Connect (OSTI)

    Acox, T.A.

    1982-01-01

    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.

  10. Atomic and electronic structures of single-layer FeSe on SrTiO3(001): The role of oxygen deficiency

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

    Bang, Junhyeok; Li, Zhi; Sun, Y. Y.; Samanta, Amit; Zhang, Y. Y.; Zhang, Wenhao; Wang, Lili; Chen, X.; Ma, Xucun; Xue, Q.-K.; et al

    2013-06-06

    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, whichmore »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.« less

  11. Characteristics of tropical cyclones in high-resolution models in the present climate

    SciTech Connect (OSTI)

    Shaevitz, Daniel A.; Camargo, Suzana J.; Sobel, Adam H.; Jonas, Jeffrey A.; Kim, Daehyun; Kumar, Arun; Lim, Young -Kwon; Reed, Kevin A.; Roberts, Malcolm J.; Scoccimarro, Enrico; Vidale, Pier Luigi; Wang, Hui; Zhao, Ming; Henderson, Naomi

    2014-12-05

    The global characteristics of tropical cyclones (TCs) simulated by several climate models are analyzed and compared with observations. The global climate models were forced by the same sea surface temperature (SST) fields in two types of experiments, using climatological SST and interannually varying SST. TC tracks and intensities are derived from each model's output fields by the group who ran that model, using their own preferred tracking scheme; the study considers the combination of model and tracking scheme as a single modeling system, and compares the properties derived from the different systems. Overall, the observed geographic distribution of global TC frequency was reasonably well reproduced. As expected, with the exception of one model, intensities of the simulated TC were lower than in observations, to a degree that varies considerably across models.

  12. Quantum correlations in bulk properties of solids obtained from neutron scattering

    E-Print Network [OSTI]

    Ben-Qiong Liu; Lian-Ao Wu; Guo-Mo Zeng; Jian-Ming Song; Wei Luo; Yang Lei; Guang-Ai Sun; Bo Chen; Shu-Ming Peng

    2014-07-02

    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.

  13. Biogeochemical Mechanisms Controlling Reduced Radionuclide Particle Properties and Stability

    SciTech Connect (OSTI)

    Jim K. Fredrickson; John M. Zachara; Matthew J. Marshall; Alex S. Beliaev

    2006-06-01

    Uranium and Technetium are the major risk-driving contaminants at Hanford and other DOE sites. These radionuclides have been shown to be reduced by dissimilatory metal reducing bacteria (DMRB) under anoxic conditions. Laboratory studies have demonstrated that reduction results in the formation of poorly soluble hydrous oxides, UO2(s) and TcO2n?H2O(s), that are believed to limit mobility in the environment. The mechanisms of microbial reduction of U and Tc have been the focus of considerable research in the Environmental Remediation Sciences Program (ERSP). In spite of equal or greater importance in terms of controlling the environmental fate of the contaminants relatively little is known regarding the precipitation mechanism(s), reactivity, persistence, and transport of biogenic UO2(s) and TcO2(s).

  14. Quantum gravity, the origin of time and time's arrow

    SciTech Connect (OSTI)

    Moffat, J.W. (Univ. of Toronto, Ontario (Canada))

    1993-03-01

    The local Lorentz and diffeomorphism symmetries of Einstein's gravitational theory are spontaneously broken by a Higgs mechanism by invoking a phase transition in the early universe, at a critical temperature [Tc] below which the symmetry is restored. The spontaneous breakdown of the vacuum state generates an external time, and the wave function of the universe satisfies a time-dependent Schroedinger equation, which reduces to the Wheeler-deWitt equation in the classical regime for T<[Tc], allowing a semiclassical WKB approximation to the wave function. The conservation of energy is spontaneously violated for T>[Tc], and matter is created fractions of seconds after the big bang, generating the matter in the Universe. The time direction of the vacuum expectation value of the scalar Higgs field generates a time asymmetry, which defines the cosmological arrow of time and the direction of increasing entropy as the Lorentz symmetry is restored at low temperatures. 52 refs.

  15. Wavelength-dependent optical enhancement of superconducting interlayer coupling in La1.885Ba0.115CuO4

    SciTech Connect (OSTI)

    Casandruc, E.; Nicoletti, D.; Rajasekaran, S.; Laplace, Y.; Khanna, V.; Gu, G.; Hill, J. P.; Cavalleri, A.

    2015-05-05

    We analyze the pump wavelength dependence for the photo-induced enhancement of interlayer coupling in La1.885Ba0.115CuO4, which is promoted by optical melting of the stripe order. In the equilibrium superconducting state (T < TC = 13 K), in which stripes and superconductivity coexist, time-domain THz spectroscopy reveals a photo-induced blue-shift of the Josephson Plasma Resonance after excitation with optical pulses polarized perpendicular to the CuO2 planes. In the striped, non-superconducting state (TC < T < TSO ? 40 K) a transient plasma resonance similar to that seen below TC appears from a featureless equilibrium reflectivity. Most strikingly, both these effects become stronger upon tuning of the pump wavelength from the mid-infrared to the visible, underscoring an unconventional competition between stripe order and superconductivity, which occurs on energy scales far above the ordering temperature.

  16. Finite-temperature chiral condensate and low-lying Dirac eigenvalues in quenched SU(2) lattice gauge theory

    E-Print Network [OSTI]

    P. V. Buividovich; E. V. Luschevskaya; M. I. Polikarpov

    2008-09-18

    The spectrum of low-lying eigenvalues of overlap Dirac operator in quenched SU(2) lattice gauge theory with tadpole-improved Symanzik action is studied at finite temperatures in the vicinity of the confinement-deconfinement phase transition defined by the expectation value of the Polyakov line. The value of the chiral condensate obtained from the Banks-Casher relation is found to drop down rapidly at T = Tc, though not going to zero. At Tc' = 1.5 Tc = 480 MeV the chiral condensate decreases rapidly one again and becomes either very small or zero. At T condensate and the expectation value of the Polyakov line are nonzero the distributions of small eigenvalues are not universal. Here the eigenvalue spectrum is better described by a phenomenological model of dilute instanton - anti-instanton gas.

  17. Resonant tunneling of fluctuation Cooper pairs

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

    Galda, Alexey; Mel'nikov, A. S.; Vinokur, V. M.

    2015-02-09

    Superconducting fluctuations have proved to be an irreplaceable source of information about microscopic and macroscopic material parameters that could be inferred from the experiment. According to common wisdom, the effect of thermodynamic fluctuations in the vicinity of the superconducting transition temperature, Tc, is to round off all of the sharp corners and discontinuities, which otherwise would have been expected to occur at Tc. Here we report the current spikes due to radiation-induced resonant tunneling of fluctuation Cooper pairs between two superconductors which grow even sharper and more pronounced upon approach to Tc. This striking effect offers an unprecedented tool formore »direct measurements of fluctuation Cooper pair lifetime, which is key to our understanding of the fluctuation regime, most notably to nature of the pseudogap state in high-temperature superconductors. Our finding marks a radical departure from the conventional view of superconducting fluctuations as a blurring and rounding phenomenon.« less

  18. Infrared Two-Color Multicycle Laser Field Synthesis for Generating an Intense Attosecond Pulse

    SciTech Connect (OSTI)

    Takahashi, Eiji J.; Lan Pengfei; Nabekawa, Yasuo; Midorikawa, Katsumi [Extreme Photonics Research Group, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan); Muecke, Oliver D. [Photonics Institute, Vienna University of Technology, Gusshausstrasse 27-387, A-1040 Vienna (Austria)

    2010-06-11

    We propose and demonstrate the generation of a continuum high-order harmonic spectrum by mixing multicycle two-color (TC) laser fields with the aim of obtaining an intense isolated attosecond pulse. By optimizing the wavelength of a supplementary infrared pulse in a TC field, a continuum harmonic spectrum was created around the cutoff region without carrier-envelope phase stabilization. The obtained harmonic spectra clearly show the possibility of generating isolated attosecond pulses from a multicycle TC laser field, which is generated by an 800 nm, 30 fs pulse mixed with a 1300 nm, 40 fs pulse. Our proposed method enables us not only to relax the requirements for the pump pulse duration but also to reduce ionization of the harmonic medium. This concept opens the door to create an intense isolated attosecond pulse using a conventional femtosecond laser system.

  19. Habitat types of the Eastern Cross Timbers of Texas 

    E-Print Network [OSTI]

    Marcy, Larry Eugene

    1982-01-01

    IC C '0 0 Ql JJ IQ Ql Q E 0 0 E IQ I Ict l Ql Ql 0 0 I 0. Ql I' E I Q '0 Id 0 Q Ql Ql 0 0 L Cl tlj C M Q 5 Qj '0 C C M 0 R IJ 0 0 E '0 QL Ql 0 JJ Ql C Ql E c 0 C td E 0 R E I Ql Q 0 C E V 0 Q 0 td tc C... 6 0 0 0 CI Q a p 0, 0 0 a 0 I 'C I 0' Q 0 0 0 I, IC nl 0 L 0 0 tC 0 Cl 6 CI 0 Q 0 0 Cl Cl IC 0 Cl 0 6 Cl 0 0 Q 6 0 0' p c *~ tC 0 CQ Cl Cl' ap 0 C IQ Q h ~ C!' 38 In most plant communities, the herbaceous...

  20. IMPACT OF TARGET MATERIAL ACTIVATION ON PERSONNEL EXPOSURE AND RADIOACTIVE CONTAMINATION IN THE NATIONAL IGNITION FACILITY

    SciTech Connect (OSTI)

    Khater, H; Epperson, P; Thacker, R; Beale, R; Kohut, T; Brereton, S

    2009-06-30

    Detailed activation analyses are performed for the different materials under consideration for use in the target capsules and hohlraums used during the ignition campaign on the National Ignition Facility. Results of the target material activation were additionally used to estimate the levels of contamination within the NIF target chamber and the workplace controls necessary for safe operation. The analysis examined the impact of using Be-Cu and Ge-doped CH capsules on the external dose received by workers during maintenance activities. Five days following a 20 MJ shot, dose rates inside the Target Chamber (TC) due to the two proposed capsule materials are small ({approx} 1 {micro}rem/h). Gold and depleted-uranium (DU) are considered as potential hohlraum materials. Following a shot, gold will most probably get deposited on the TC first wall. On the other hand, while noble-gas precursors from the DU are expected to stay in the TC, most of the noble gases are pumped out of the chamber and end up on the cryopumps. The dose rates inside the TC due to activated gold or DU, at 5 days following a 20 MJ shot, are about 1 mrem/h. Dose rates in the vicinity of the cryo-pumps (containing noble 'fission' gases) drop-off to about 1 mrem/h during the first 12 hours following the shot. Contamination from activation of NIF targets will result in the NIF target chamber exceeding DOE surface contamination limits. Objects removed from the TC will need to be managed as radioactive material. However, the results suggest that airborne contamination from resuspension of surface contamination will not be significant and is at levels that can be managed by negative ventilation when accessing the TC attachments.