Sample records for hl wyman ce

  1. Nimonkar, Genschel, Kinoshita, Polaczek, Campbell, Wyman, Modrich, and Kowalczykowski Page 1 Supplemental Material

    E-Print Network [OSTI]

    Kowalczykowski, Stephen C.

    Plasmid DNA (pUC19) was purified using a protocol that used lysis at a neutral pH followed by cesium, Campbell, Wyman, Modrich, and Kowalczykowski ­ Page 3 BLM and RPA preparations were free of contaminating

  2. Cellulase for commodity products from cellulosic biomass Michael E Himmel*?, Mark F Ruth*1 and Charles E Wymans

    E-Print Network [OSTI]

    California at Riverside, University of

    and Charles E Wymans A vital objective for second millennium biotechnology will be the enzymatic conversion 03755, USA; e-mail: Charles.E.Wyman@Dartmouth.edu Current Opinion in Biotechnology 1999, 10:358-364 http- modity products, this vast resource can provide environmental, economic, and strategic benefits

  3. Qualitative and quantitative features of orbits of massive particles and photons moving in Wyman geometry

    E-Print Network [OSTI]

    G. Oliveira-Neto; G. F. Sousa

    2008-01-29T23:59:59.000Z

    The Wyman's solution depends on two parameters, the mass $M$ and the scalar charge $\\sigma$. If one fixes $M$ to a positive value, say $M_0$, and let $\\sigma^2$ take values along the real line it describes three different types of spacetimes. For $\\sigma^2 >0$ the spacetimes are naked singularities, for $\\sigma^2 = 0$ one has the Schwarzschild black hole of mass $M_0$ and finally for $-M_0^2 \\leq \\sigma^2 0$, there is an infinity potential wall that prevents both massive particles and photons ever to reach the naked singularity. We notice, also, that for certain values of $-M_0^2 \\leq \\sigma^2 < 0$, the potential is finite everywhere, which allows massive particles and photons moving from one wormhole asymptotically flat region to the other. We also compute the radial timelike and null geodesics for massive particles and photons, respectively, moving in the naked singularities and wormholes spacetimes.

  4. Massachusetts Beryllium Screening Program for Former Workers of Wyman-Gordon, Norton Abrasives, and MIT/Nuclear Metals

    SciTech Connect (OSTI)

    Pepper, L.D.

    2008-05-21T23:59:59.000Z

    The overall objective of this project was to provide medical screening to former workers of Wyman-Gordon Company, Norton Abrasives, and MIT/Nuclear Metals (NMI) in order to prevent and minimize the health impact of diseases caused by site related workplace exposures to beryllium. The program was developed in response to a request by the U.S. Department of Energy (DOE) that had been authorized by Congress in Section 3162 of the 1993 Defense Authorization Act, urging the DOE to â??carry out a program for the identification and ongoing evaluation of current and former DOE employees who are subjected to significant health risks during such employment." This program, funded by the DOE, was an amendment to the medical surveillance program for former DOE workers at the Nevada Test Site (NTS). This programâ??s scope included workers who had worked for organizations that provided beryllium products or materials to the DOE as part of their nuclear weapons program. These organizations have been identified as Beryllium Vendors.

  5. HL&P/Du Pont Cogeneration Project

    E-Print Network [OSTI]

    Vadie, H. H.

    2013-06-06T23:59:59.000Z

    . Supplementary fireable HRSG's provide additional supply reliability for the steam host. Electricity from the project is delivered into HL&P's System through a new 138 KY substation. Such an arrangement offers Du Pont a significant cost saving opportunity as less...

  6. HL&P/Du Pont Cogeneration Project 

    E-Print Network [OSTI]

    Vadie, H. H.

    2013-06-06T23:59:59.000Z

    . Supplementary fireable HRSG's provide additional supply reliability for the steam host. Electricity from the project is delivered into HL&P's System through a new 138 KY substation. Such an arrangement offers Du Pont a significant cost saving opportunity as less...

  7. HL Power Company | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, search OpenEI ReferenceJumpEnergyStrategy | Open Energy Sector:Ergenics IncHL

  8. First Neutron Spectrometry Measurement at the HL-2A Tokamak

    E-Print Network [OSTI]

    Xi, Yuan; Xufei, Xie; Zhongjing, Chen; Xingyu, Peng; Tieshuan, Fan; Jinxiang, Chen; Xiangqing, Li; Guoliang, Yuan; Jinwei, Yang; Qingwei, Yang

    2013-01-01T23:59:59.000Z

    A compact neutron spectrometer based on the liquid scintillator is presented for the neutron energy spectrum measurement at the HL-2A tokamak. The spectrometer has been well characterized and a fast digital pulse shape discrimination software has been developed using the charge comparison method. A digitizer data acquisition system with the maximum frequency of 1 MHz can work under the high count rate environment at HL-2A. Specific radiation shielding and magnetic shielding for the spectrometerhas been designed for the neutron spectrum measurement at the HL-2A Tokamak. For the analysis of the pulse height spectrum, dedicated numerical simulation utilizing NUBEAM combining with GENESIS has been made to obtain the neutron energy spectrum, following which the transportation process from the plasma to the detector has been evaluated with Monte Carlo calculations. The distorted neutron energy spectrum has been folded with response matrix of the liquid scintillation spectrometer, and good consistency has been found...

  9. First Neutron Spectrometry Measurement at the HL-2A Tokamak

    E-Print Network [OSTI]

    Yuan Xi; Zhang Xing; Xie Xufei; Chen Zhongjing; Peng Xingyu; Fan Tieshuan; Chen Jinxiang; Li Xiangqing; Yuan Guoliang; Yang Jinwei; Yang Qingwei

    2013-06-17T23:59:59.000Z

    A compact neutron spectrometer based on the liquid scintillator is presented for neutron energy spectrum measurements at the HL-2A tokamak. The spectrometer was well characterized and a fast digital pulse shape discrimination software was developed using the charge comparison method. A digitizer data acquisition system with a maximum frequency of 1 MHz can work under an environment with a high count rate at HL-2A tokamak. Specific radiation and magnetic shielding for the spectrometer were designed for the neutron spectrum measurement at the HL-2A tokamak. For pulse height spectrum analysis, dedicated numerical simulation utilizing NUBEAM combined with GENESIS was performed to obtain the neutron energy spectrum. Subsequently, the transportation process from the plasma to the detector was evaluated with Monte Carlo calculations. The distorted neutron energy spectrum was folded with the response matrix of the liquid scintillation spectrometer, and good consistency was found between the simulated and measured pulse height spectra. This neutron spectrometer based on a digital acquisition system could be well adopted for the investigation of the auxiliary heating behavior and the fast-ion related phenomenon on different tokamak devices.

  10. Michelle Wyman | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment3311, 3312), OctoberMayEnergyInstitute of Standards

  11. BUTYRIC ACID INCREASES INVASIVENESS OF HL-60 LEUKEMIA CELLS: ROLE OF REACTIVE OXYGEN SPECIES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Microbiol Lett 518, 1-3 (2002) 159-63" #12;2 Abbreviations: AML-2, acute myeloid leukemia type 2; ATRA, all leukemia cell line HL-60 represent a widely used model of acute myeloid leukemia type 2 (AML-2) [8], which1 BUTYRIC ACID INCREASES INVASIVENESS OF HL-60 LEUKEMIA CELLS: ROLE OF REACTIVE OXYGEN SPECIES

  12. Overview of the HL-1M Tokamak Experiments

    SciTech Connect (OSTI)

    Liu Yong; Wang Enyao; Ding Xuantong; Yan Longwen; Qian Shangjie; Yan Jiancheng [Southwestern Institute of Physics (China)

    2002-07-15T23:59:59.000Z

    Experimental progress with the HL-1M tokamak has been made in many areas including confinement improvement, auxiliary heating, plasma fueling, and wall conditionings. An H-mode induced by a biased electrode was obtained with the formation of an internal transport barrier at the region of r/a {approx} 0.4 to 0.5. Confinement improvement by lower-hybrid current drive (LHCD) was extensively investigated. Confinement improvement seems to be related to the production of the radial electron field during LHCD. In off-axis electron cyclotron resonance heating (ECRH), double sawteeth in soft X-ray radiation were observed, which implies that reversed magnetic shear could be formed during ECRH. At higher ECRH power, when the resonance position is near the q = 1 surface, fishbone instability was observed and investigated. An eight-shot pellet injector was used for the experiments. The pellet ablation process was investigated with a charge-coupled device (CCD) camera and an H{sub {alpha}} emission detector array. Clearly, asymmetry in the pellet cloud was observed in both the toroidal and poloidal directions. It has been found that the pellet velocity slows down clearly after the pellet enters the plasma. The density limit has been investigated on HL-1M at different wall conditionings with three kinds of fueling methods. It was found that a higher density limit could be achieved under the following conditions: (a) a strong reduction of the impurity content after siliconization and (b) a peaked density profile with pellet injection and/or supersonic molecular beam injection. With a neutral beam injection (NBI) system of 1 MW, preliminary results of NBI experiments were obtained with an increase of ion temperature from 450 to 700 eV.

  13. International Refrigeration: Order (2012-CE-1510) | Department...

    Energy Savers [EERE]

    International Refrigeration: Order (2012-CE-1510) International Refrigeration: Order (2012-CE-1510) July 20, 2012 DOE ordered International Refrigeration Products to pay an 8,000...

  14. Chemical and Structural Features of Plants That Contribute to Biomass Recalcitrance

    E-Print Network [OSTI]

    DeMartini, Jaclyn Diana

    2011-01-01T23:59:59.000Z

    Wood: Properties for Ethanol Fuel and Fiber Productions.Wyman CE, 2004. Ethanol Fuel, in Cleveland, C.J. (Ed. ),scenario for cellulosic ethanol fuel production, and speaks

  15. Ageing studies of resistive Micromegas detectors for the HL-LHC

    E-Print Network [OSTI]

    Galán, J; Ferrer-Ribas, E; Giganon, A; Giomataris, I; Herlant, S; Jeanneau, F; Peyaud, A; Schune, Ph; Alexopoulos, T; Byszewski, M; Iakovidis, G; Iengo, P; Ntekas, K; Leontsinis, S; de Oliveira, R; Tsipolitis, Y; Wotschack, J

    2013-01-01T23:59:59.000Z

    Resistive-anode Micromegas detectors are in development since several years, in an effort to solve the problem of sparks when working in high flux and high radiations environment like in the HL-LHC (ten times the luminosity of the LHC). They have been chosen as one of the technologies that will be part of the ATLAS New Small Wheel project (forward muon system). An ageing study is mandatory to assess their capabilities to handle the HL-LHC environment on a long-term period. A prototype has been exposed to several types of irradiations (X-rays, cold neutrons, 60 Co gammas) up to an equivalent HL-LHC time of more than five years without showing any degradation of the performances in terms of gain and energy resolution. Beam test studies took place in October 2012 to assess the tracking performances (efficiency, spatial resolution,...). Results of ageing studies and beam test performances are reported in this paper.

  16. Ageing studies of resistive Micromegas detectors for the HL-LHC

    E-Print Network [OSTI]

    J. Galan; D. Attie; E. Ferrer-Ribas; A. Giganon; I. Giomataris; S. Herlant; F. Jeanneau; A. Peyaud; Ph. Schune; T. Alexopoulos; M. Byszewski; G. Iakovidis; P. Iengo; K. Ntekas; S. Leontsinis; R. de Oliveira; Y. Tsipolitis; J. Wotschack

    2013-04-07T23:59:59.000Z

    Resistive-anode Micromegas detectors are in development since several years, in an effort to solve the problem of sparks when working in high flux and high radiations environment like in the HL-LHC (ten times the luminosity of the LHC). They have been chosen as one of the technologies that will be part of the ATLAS New Small Wheel project (forward muon system). An ageing study is mandatory to assess their capabilities to handle the HL-LHC environment on a long-term period. A prototype has been exposed to several types of irradiations (X-rays, cold neutrons, 60 Co gammas) up to an equivalent HL-LHC time of more than five years without showing any degradation of the performances in terms of gain and energy resolution. Beam test studies took place in October 2012 to assess the tracking performances (efficiency, spatial resolution,...). Results of ageing studies and beam test performances are reported in this paper.

  17. College of Engineering CE Civil Engineering

    E-Print Network [OSTI]

    MacAdam, Keith

    College of Engineering CE Civil Engineering KEY: # = new course * = course changed = course.Lecture,twohours;laboratory,fourhoursperweek.Prereqorcoreq:MA113orconsentofinstructor. CE 120 INTRODUCTION TO CIVIL ENGINEERING. (1) An introduction to the civil engineering profession and the use of computer hardware and software in CE systems analysis and design

  18. Effects of CeO2 Support Facets on VOx/CeO2 Catalysts in Oxidative...

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

    CeO2 Support Facets on VOxCeO2 Catalysts in Oxidative Dehydrogenation of Methanol. Effects of CeO2 Support Facets on VOxCeO2 Catalysts in Oxidative Dehydrogenation of Methanol....

  19. Investigation of Supersonic Molecular Beam Injection into the HL-1M Tokamak

    SciTech Connect (OSTI)

    Yao Lianghua; Feng Beibin; Dong Jaifu; Zhou Yan; Cui Zhengying; Cao Jianyong; Tang Nianyi; Feng Zhen; Xiao Zhenggui; Song Xianming; Hong Wenyu; Wang, Enyao; Liu Yong [Southwestern Institute of Physics (China)

    2002-07-15T23:59:59.000Z

    As a new fueling method, supersonic molecular beam injection (SMBI) has been successfully developed and used in the HL-1M tokamak and HT-7 superconducting tokamak. SMBI can enhance penetration depth and fueling efficiency. It can be considered a significant improvement over conventional gas puffing. In recent experiments, hydrogen clusters have been found in the beam produced by high working gas pressure. The hydrogen particles of the beam have penetrated into the plasma center region, in which the average velocity of the injected beam is >1200 m/s. The rate of increase of electron density for SMBI, d[bar]n{sub e}/dt, approaches that of small ice pellet injection (PI). The plasma density increases step by step after multipulse SMBI, just as with the effects of multipellet fueling. Comparison of fueling effects was made between SMBI and small ice PI in the same shot of ohmic discharge in HL-1M.

  20. Diagnostics for energetic particle studies on the HL-2A tokamak

    SciTech Connect (OSTI)

    Yang, Q. W., E-mail: yangqw@swip.ac.cn; Zhou, H. Y.; Yang, J. W.; Shi, Z. B.; Ji, X. Q.; Yuan, G. L.; Zhang, Y. P.; Yu, D. L.; Jiang, M.; Li, W.; Ding, X. T. [Southwestern Institute of Physics, Chengdu 610041 (China); Yin, Z. J.; Cao, H. R. [Department of Modern Physics, University of Science and Technology of China, Hefei 230026 (China)

    2014-11-15T23:59:59.000Z

    About 13 kinds of diagnostics for energetic particle physics studied on the HuanLiuqi-2A (commonly referred to as HL-2A) tokamak are described in this paper. Their measurement ranges, resolutions, and arrangement are presented. Three under-construction diagnostics including imaging fast ion D-alpha, scintillator matrix (for hard X-ray detection), and bundle fission chamber are described in detail.

  1. Calibration of a 32 channel electron cyclotron emission radiometer on the HL-2A tokamak

    SciTech Connect (OSTI)

    Shi, Z. B., E-mail: shizb@swip.ac.cn; Jiang, M.; Huang, X. L.; Zhong, W. L.; Chen, W.; Che, Y. L.; Liu, Z. T.; Ding, X. T.; Yang, Q. W.; Duan, X. R. [Southwestern Institute of Physics, P. O. Box 432, Chengdu 610041 (China)] [Southwestern Institute of Physics, P. O. Box 432, Chengdu 610041 (China)

    2014-02-15T23:59:59.000Z

    A novel 32-channel electron cyclotron emission radiometer has been designed and tested for the measurement of electron temperature profiles on the HL-2A tokamak. This system is based on the intermediate frequency filter detection technique, and has the features of wide working frequency range and high spatial resolution. Two relative calibration methods have been investigated: sweeping the toroidal magnetic field and hopping the output frequency of the local oscillator. Preliminary results show that both methods can ensure reasonable profiles.

  2. CE: Compromise Agreement (2013-SE-1429)

    Broader source: Energy.gov [DOE]

    DOE and CE North America entered into a Compromise Agreement to resolve a case involving the distribution in commerce of noncompliant freezers.

  3. An ageing study of resistive micromegas for the HL-LHC environment

    E-Print Network [OSTI]

    Galán, J; Ferrer-Ribas, E; Giganon, A; Giomataris, I; Herlant, S; Jeanneau, F; Peyaud, A; Schune, Ph; Alexopoulos, T; Byszewski, M; Iakovidis, G; Iengo, P; Ntekas, K; Leontsinis, S; de Oliveira, R; Tsipolitis, Y; Wotschack, J

    2013-01-01T23:59:59.000Z

    Resistive-anode micromegas detectors are in development since several years, in an effort to solve the problem of sparks when working at high flux and high ionizing radiation like in the HL-LHC (up to ten times the luminosity of the LHC). They have been chosen as one of the technologies that will be part of the ATLAS New Small Wheel project (forward muon system). An ageing study is mandatory to assess their capabilities to handle the HL-LHC environment on a long-term period. A prototype has been exposed to several types of irradiation (X-rays, cold neutrons, $^{60}$Co gammas and alphas) above the equivalent charge produced at the detector in five HL-LHC running years without showing any degradation of the performances in terms of gain and energy resolution. This study has been completed with the characterization of the tracking performances in terms of efficiency and spatial resolution, verifying the compatibility of results obtained with both resistive micromegas detectors, irradiated and non-irradiated one.

  4. An ageing study of resistive micromegas for the HL-LHC environment

    E-Print Network [OSTI]

    J. Galán; D. Attié; E. Ferrer-Ribas; A. Giganon; I. Giomataris; S. Herlant; F. Jeanneau; A. Peyaud; Ph. Schune; T. Alexopoulos; M. Byszewski; G. Iakovidis; P. Iengo; K. Ntekas; S. Leontsinis; R. de Oliveira; Y. Tsipolitis; J. Wotschack

    2013-01-31T23:59:59.000Z

    Resistive-anode micromegas detectors are in development since several years, in an effort to solve the problem of sparks when working at high flux and high ionizing radiation like in the HL-LHC (up to ten times the luminosity of the LHC). They have been chosen as one of the technologies that will be part of the ATLAS New Small Wheel project (forward muon system). An ageing study is mandatory to assess their capabilities to handle the HL-LHC environment on a long-term period. A prototype has been exposed to several types of irradiation (X-rays, cold neutrons, $^{60}$Co gammas and alphas) above the equivalent charge produced at the detector in five HL-LHC running years without showing any degradation of the performances in terms of gain and energy resolution. This study has been completed with the characterization of the tracking performances in terms of efficiency and spatial resolution, verifying the compatibility of results obtained with both resistive micromegas detectors, irradiated and non-irradiated one.

  5. Recent Experiment Results during Electron Cyclotron Heating on HL-2A

    SciTech Connect (OSTI)

    Dong, Y. B.; Liu, Yi; Sun, H. J.; Zhou, Jun; Xiao, W. W.; Chen, W.; Deng, W.; Yao, L. H.; Feng, B. B.; Rao, J.; Yang, Q. W.; Ding, X. T.; Liu, Yong; Pan, C. H. [Southwestern Institute of Physics (SWIP), P.O Box 432, Chengdu 610041 (China)

    2008-04-07T23:59:59.000Z

    The recent experiment results during electron cyclotron resonance heating (ECRH) on HL-2A tokamak are presented in this paper. During ECRH with a series of the supersonic molecular beam injection (SMBI) pulse fueling, the plasma storage energy W{sub E}, {beta}{sub p}, line averaged density n{sub e} and 'fusion neutron' count increase, leading to the plasma confinement improved. Furthermore, the non-local transport phenomena induced by SMBI have been firstly observed in HL-2A tokamak. The non-local effect induced by SMBI in HL-2A lasts much longer than that induced by pellet injection in other similar size tokamak; both the bolometer radiation and the H{sub a} emission decrease when the non-local effect appears. It indicates that an electron transport barrier has possibly been formed at the position just outside the q = 1 surface during this phase. In addition, the delayed core soft x-ray intensity decrease has been observed after ECRH switch-off, while the edge soft X-ray intensity decreases just after the ECRH switch off. The study shows transport coefficient reduces at all radii just after the off-axis ECRH switch off, especially near the heating deposition location. Moreover, various types of sawteeth activities during ECRH experiment are investigated, and the relationship between the sawtooth period and the power deposition location has been studied.

  6. Table 1. Connection of Criterion 8 CE Outcomes to CE Courses (required, design elective, advanced elective)

    E-Print Network [OSTI]

    Gelfond, Michael

    treatment Biological wastewater treatment (d) Proficiency in Water Resources Engineering CE 3305 CE 3354 CE systems Design of advance water treatment systems Design of biological wastewater treatment systems (g ENVE 4391 ENVE 4399 Water, wastewater, air, solid waste Physical and chemical treatment Advanced water

  7. Observation of green emission from Ce3+ doped gadolinium oxide...

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

    green emission from Ce3+ doped gadolinium oxide nanoparticles. Observation of green emission from Ce3+ doped gadolinium oxide nanoparticles. Abstract: Green emission at around 500...

  8. Thermoelectric Couple Demonstration of (In, Ce)-based Skutterudite...

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

    Couple Demonstration of (In, Ce)-based Skutterudite Materials for Automotive Energy Recovery Thermoelectric Couple Demonstration of (In, Ce)-based Skutterudite Materials for...

  9. Test-Bed of a Real Time Detection System for L/H & H/L Transitions Implemented with the ITMS Platform

    E-Print Network [OSTI]

    Test-Bed of a Real Time Detection System for L/H & H/L Transitions Implemented with the ITMS Platform

  10. Cost objective PLM and CE

    E-Print Network [OSTI]

    Perry, Nicolas

    2010-01-01T23:59:59.000Z

    Concurrent engineering taking into account product life-cycle factors seems to be one of the industrial challenges of the next years. Cost estimation and management are two main strategic tasks that imply the possibility of managing costs at the earliest stages of product development. This is why it is indispensable to let people from economics and from industrial engineering collaborates in order to find the best solution for enterprise progress for economical factors mastering. The objective of this paper is to present who we try to adapt costing methods in a PLM and CE point of view to the new industrial context and configuration in order to give pertinent decision aid for product and process choices. A very important factor is related to cost management problems when developing new products. A case study is introduced that presents how product development actors have referenced elements to product life-cycle costs and impacts, how they have an idea bout economical indicators when taking decisions during t...

  11. Cost objective PLM and CE

    E-Print Network [OSTI]

    Nicolas Perry; Alain Bernard

    2010-11-26T23:59:59.000Z

    Concurrent engineering taking into account product life-cycle factors seems to be one of the industrial challenges of the next years. Cost estimation and management are two main strategic tasks that imply the possibility of managing costs at the earliest stages of product development. This is why it is indispensable to let people from economics and from industrial engineering collaborates in order to find the best solution for enterprise progress for economical factors mastering. The objective of this paper is to present who we try to adapt costing methods in a PLM and CE point of view to the new industrial context and configuration in order to give pertinent decision aid for product and process choices. A very important factor is related to cost management problems when developing new products. A case study is introduced that presents how product development actors have referenced elements to product life-cycle costs and impacts, how they have an idea bout economical indicators when taking decisions during the progression of the project of product development.

  12. Development of frequency modulated continuous wave reflectometer for electron density profile measurement on the HL-2A tokamak

    SciTech Connect (OSTI)

    Zhong, W. L., E-mail: zhongwl@swip.ac.cn; Shi, Z. B.; Liu, Z. T.; Chen, W.; Jiang, M.; Li, J.; Cui, Z. Y.; Song, X. M.; Chen, L. Y.; Ding, X. T.; Liu, Yi; Yan, L. W.; Yang, Q. W.; Duan, X. R. [Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041 (China)] [Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041 (China); Huang, X. L. [Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041 (China) [Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041 (China); Department of Fusion Science, Graduate University for Advanced Studies, Toki 509-5292 (Japan); Zou, X. L. [CEA, IRFM, F-13108 Saint-Paul-lez-Durance (France)] [CEA, IRFM, F-13108 Saint-Paul-lez-Durance (France)

    2014-01-15T23:59:59.000Z

    The frequency modulated continuous wave reflectometer was developed for the first time on the HL-2A tokamak. The system utilizes a voltage controlled oscillator and an active multiplier for broadband coverage and detects as heterodyne mode. Three reflectometers have been installed and operated in extraordinary mode polarization on HL-2A to measure density profiles at low field side, covering the Q-band (33–50 GHz), V-band (50–75 GHz), and W-band (75–110 GHz). For density profile reconstruction from the phase shift of the probing wave, a corrected phase unwrapping method is introduced in this article. The effectiveness of the method is demonstrated. The density profile behavior of a fast plasma event is presented and it demonstrates the capability of the reflectometer. These diagnostics will be contributed to the routine density profile measurements and the plasma physics study on HL-2A.

  13. ADVISER ROOM # EMAIL ADDRESS Adams 221 COBH (eda@ce.montana.edu)

    E-Print Network [OSTI]

    Dyer, Bill

    , Michael L. Adams Senior CE Betcher, Jacob M. Lewandowski Freshman CE Bigelow, Adam J. (F 11) Larsson Sophomore CE Deen, Michael Perkins Junior CE Devoe, Colleen L. (1st deg Arch) Larsson Sophomore CE #12;DeWitt

  14. High spatial and temporal resolution charge exchange recombination spectroscopy on the HL-2A tokamak

    SciTech Connect (OSTI)

    Wei, Y. L.; Yu, D. L., E-mail: yudl@swip.ac.cn; Liu, L.; Cao, J. Y.; Sun, A. P.; Ma, Q.; Chen, W. J.; Liu, Yi; Yan, L. W.; Yang, Q. W.; Duan, X. R.; Liu, Yong [Southwestern Institute of Physics, Chengdu 610041 (China); Ida, K. [National Institute for Fusion Science, Toki 509-5292 (Japan); Hellermann, M. von [ITER Diagnostic Team, IO, Route de Vinon sur Verdon, 13115 St Paul lez Durance (France); FOM-Institute for Plasma physics “Rijnhuizen,” Association EURATOM, Trilateral Euregio Cluster, 3430 BE Nieuwegein (Netherlands)

    2014-10-01T23:59:59.000Z

    A 32/64-channel charge exchange recombination spectroscopy (CXRS) diagnostic system is developed on the HL-2A tokamak (R = 1.65 m, a = 0.4 m), monitoring plasma ion temperature and toroidal rotation velocity simultaneously. A high throughput spectrometer (F/2.8) and a pitch-controlled fiber bundle enable the temporal resolution of the system up to 400 Hz. The observation geometry and an optimized optic system enable the highest radial resolution up to ~1 cm at the plasma edge. The CXRS system monitors the carbon line emission (C VI, n = 8–7, 529.06 nm) whose Doppler broadening and Doppler shift provide ion temperature and plasma rotation velocity during the neutral beam injection. The composite CX spectral data are analyzed by the atomic data and analysis structure charge exchange spectroscopy fitting (ADAS CXSFIT) code. First experimental results are shown for the case of HL-2A plasmas with sawtooth oscillations, electron cyclotron resonance heating, and edge transport barrier during the high-confinement mode (H-mode)

  15. Performances and ageing study of resistive-anodes Micromegas detectors for HL-LHC environment

    E-Print Network [OSTI]

    F. Jeanneau; T. Alexopoulos; D. Attié; M. Boyer; J. Derré; G. Fanourakis; E. Ferrer-Ribas; J. Galán; E. Gazis; T. Geralis; A. Giganon; I. Giomataris; S. Herlant; J. Manjarrés; E. Ntomari; Ph. Schune; M. Titov; G. Tsipolitis

    2012-01-09T23:59:59.000Z

    With the tenfold luminosity increase envisaged at the HL-LHC, the background (photons, neutrons, ...) and the event pile-up probability are expected to increase in proportion in the different experiments, especially in the forward regions like, for instance, the muons chambers of the ATLAS detector. Detectors based on the Micromegas principle should be good alternatives for the detector upgrade in the HL-LHC framework because of a good spatial (flux hadrons environment. Several prototypes of 10x10 cm2, with different pitches (0.5 to 2 mm) and different resistive layers have been tested at CERN (pi+@SPS). Several tests have been performed with a telescope at different voltages to assess the performances of the detectors in terms of position resolution and efficiency. The spark behaviour in these conditions has also been evaluated. Resistive coating has been shown to be a successful method to reduce the effect of sparks on the efficiency of micromegas. A good spatial resolution (~80 \\mum) can be reached with a resistive strip coating detector of 1mm pitch and a high efficiency (> 98%) can be achieved with resistive-anode micromegas detector. An X-rays irradiation has been also performed, showing no ageing effect after more than 21 days exposure and an integrated charge of almost 1C.

  16. Near infrared 3~~ overtone band of Hl Brian F. Ventrudo and Daniel T. Cassidy

    E-Print Network [OSTI]

    Oka, Takeshi

    Near infrared 3~~ overtone band of Hl Brian F. Ventrudo and Daniel T. Cassidy Department infrared spectrum of the 3vz overtone band (v2=3+0) of H; has been observed at 1.4 pm. The spectrum transitions. Short-external-cavity InCaAsP diodes were used as tunable near infrared radiation sources

  17. New Detector Technologies for the LHC Experiments: Prospects, Strategies and Technologies for the HL-LHC Upgrades

    SciTech Connect (OSTI)

    Mannelli, Marcello [CERN

    2013-03-06T23:59:59.000Z

    We review the prospects, strategies and technologies for the High Luminosity (HL-LHC) upgrades of the ATLAS and CMS detectors, in the light of a very successful two year-long first physics run, and the discovery of a new 126 GeV boson with properties consistent with those of the Standard Model Higgs boson.

  18. Unusual Outbursting State of a Z Cam-Type Star HL CMa

    E-Print Network [OSTI]

    T. Kato

    2002-03-20T23:59:59.000Z

    HL CMa is a Z Cam-type dwarf nova which was discovered as an Einstein X-ray source. In addition to normal outbursts and standstills, we noticed the presence of "the third" outbursting state. During this period, the star showed weak outbursts with a long outburst cycle length. We propose that this phenomenon is caused by a heating on the accretion disk. The presence of strong P Cyg feature in the ultraviolet and the unusual presence of high-excitation optical lines could be interpreted as an emerging signature of strong irradiation field. Since the object is still in this unusual state in 2002 March, we encourage X-ray and spectroscopic observations to detect further signatures of high-energy photons and irradiation.

  19. CIVIL ENGINEERING PREREQUISITE SUMMARY Note: BSCE candidate means that you have been admitted to upper division. CE enrolled means you are listed

    E-Print Network [OSTI]

    Levinson, David M.

    3316 Transportation Engineering BSCE cand. CE 3426 Soil Mechanics CE 2425, CE 2017, BSCE cand. CE 4096 & Engineering Drawing CE 2017 CE 3016 Surveying Math 1297 CE 3025 Environmental Engineering Chem 1151 or 1153 and 1154, CE 3221, BSCE cand. CE 3026 Project Management None CE 3027 Infrastructure Materials CE 2017

  20. rtino is prof of Cyber Ce

    E-Print Network [OSTI]

    Holland, Jeffrey

    Program Technolo Worksho Bertino is Compute systems Compute to secure rtino is prof of Cyber Ce internatio Database Indexing Intelligen Services the Very on the e Security& on Web, Program VLDB, A Data Eng distributed fessor of Co enter and R nce and Se mputer Scien EC laborator maden) in S ers Universi arch

  1. CeBiTec Symposium Molecular Biotechnology

    E-Print Network [OSTI]

    Moeller, Ralf

    : Bacterial and Environmental Biotechnology Chair: Volker F. Wendisch 12:30 Jörn Kalinowski (Technology for biotechnological applications 14:30 Coffee and Cake / Poster Presentation Session II: Biopolymers Chair: Dirk9th CeBiTec Symposium Molecular Biotechnology Center for Interdisciplinary Research (Zi

  2. CE 473/573 Groundwater Course information

    E-Print Network [OSTI]

    Rehmann, Chris

    CE 473/573 Groundwater Fall 2009 Course information Instructor: Prof. Chris Rehmann rehmann of water and contaminants in groundwater systems to solve problems of groundwater resource evaluation and groundwater contamination, to develop thinking skills, to communicate effectively and function on teams

  3. CE 473/573 Groundwater Course information

    E-Print Network [OSTI]

    Rehmann, Chris

    . Groundwater modeling 4.1. Introduction to finite-difference models 4.2. Models of groundwater flow 4.3. ModelsCE 473/573 Groundwater Fall 2011 Course information Instructor: Prof. Chris Rehmann rehmann of water and contaminants in groundwater systems to solve problems of groundwater resource evaluation

  4. Dr. T.P. Clement CE 3010 class notes

    E-Print Network [OSTI]

    Clement, Prabhakar

    8/15/2011 1 Dr. T.P. Clement CE 3010 class notes Learning Objectives · Motivation · Basic approach value of the definite integral 2 b a dxxf )( Dr. T.P. Clement CE 3010 class notes Analytical (or exact a dxxf )( Dr. T.P. Clement CE 3010 class notes Trapezoidal Rule F(x) #12;8/15/2011 2 Dr. T.P. Clement CE

  5. Archaeological investigations at the Kent Creek site (41HL66): evidence of Mogollon influence on the Southern Plains

    E-Print Network [OSTI]

    Cruse, Jimmy Brett

    1989-01-01T23:59:59.000Z

    in Hall County, Texas. . . . . 4 2. Contour map of the Kent Creek site. 3. Relief map of the Llano Estacado and surrounding areas. . . , 10 4. Cultural chronology chart of the Southern Plains and eastern New Mexico. 19 5. Map of the Llano Estacado... ideas about houses and horticulture. Evidence which may support Hughes' suggestion comes from archaeological excavations recently conducted at the Kent Creek site (41HL66) located in Hall County of the southeastern Texas panhandle (Figure 1...

  6. Optical Observations of Quasar X-ray Jets J.M. Gelbord, H.L. Marshall, B. Miller (MIT)

    E-Print Network [OSTI]

    Gelbord, Jonathan

    Optical Observations of Quasar X-ray Jets J.M. Gelbord, H.L. Marshall, B. Miller (MIT) D in roughly 2/3 of our sample (13 out of 20; Marshall et al. 2003, in prep.). We are now beginning to analyze161; Marshall et al. 2001, ApJL 549, L167; Marshall et al. 2002, ApJ 564, 683; Sambruna et al. 2002

  7. Pellet and Molecular Beam Injection Fueling on the HL-1M Tokamak

    SciTech Connect (OSTI)

    Xiao Zhenggui; Li Bo; Li Li; Liu Dequan; Yao Lianghua; Dong Jiafu; Guo Gancheng; Deng Zhongchao; Zheng Yinjia; Hong Wenyu; Yan Longwen; Liu Yi; Liu Yong; Wang, Enyao [Southwestern Institute of Physics (China)

    2003-01-15T23:59:59.000Z

    The Eight-shot Pellet Injector (EPI) and Molecular Beam Injector (MBI) as new plasma fueling methods have been developed and installed on the HL-1M tokamak for fueling experiments. The main structures and characteristics of the fueling device and the typical fueling experimental results with EPI and the MBI are reported. In these experiments, typical responses of plasma in discharges with PI and MBI are the peaked density profile Q{sub n} n{sub e}(0)/<(n{sub e})> of >1.65 for MBI and of 2 for PI. The improvement of confinement time E is usually better than 10 to 30% of Gas Puffing (GP) discharge in the same operation condition. In addition, the penetration depth and deposition region of fueling particles, the variance of soft X-ray sawteeth, the rotation and flow of plasma in edge region as well as the photographing of ablation clouds with PI and MBI are compared and presented in this paper.

  8. CeCap LLP | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:Power LPInformationCashtonGoCaterpillar Jump to:CeCap LLP Jump to:

  9. CIVIL ENGINEERING Prerequisite Summary Note: BSCE candidate means that you have been admitted to upper division. CE enrolled means you are listed with

    E-Print Network [OSTI]

    Levinson, David M.

    , Math 3280 (conc), BSCE cand. CE 3316 Transportation Engineering BSCE cand. CE 3426 Soil Mechanics CE & Engineering Drawing CE 2017, BSCE cand. CE 3016 Surveying Math 1297, BSCE cand. CE 3025 Environmental Engineering Chem 1151 or 1153 and 1154, CE 3221, BSCE cand. CE 3026 Project Management BSCE cand. CE 3027

  10. Informations et rservations : ce.pv-holidays.com

    E-Print Network [OSTI]

    Arleo, Angelo

    Informations et réservations : ce.pv-holidays.com * Offre valable pour tout séjour de 7 nuits détails sur ce.pv-holidays.com. Offre valable sur l'hébergement seul (hors frais de dossier, prestations cumulable avec votre remise partenaire, toute offre promotionnelle ou réductions. PV-CPDistribution, Société

  11. Dr. T.P. Clement CE 3010 class notes

    E-Print Network [OSTI]

    Clement, Prabhakar

    1 Dr. T.P. Clement CE 3010 class notes Quotes · Genius is 1 percent inspiration and 99 percent in little things. Excellence is not an exception, it is a prevailing attitude Colin Powell 1 Dr. T.P · Combining conditions · Loops · Examples 2 Dr. T.P. Clement CE 3010 class notes Program to Find Real Roots

  12. Approved Module Information for CE4020, 2014/5 Module Title/Name: Advanced Mass Trasfer Module Code: CE4020

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    : CE4020 School: Engineering and Applied Science Module Type: Standard Module New Module? No ModuleApproved Module Information for CE4020, 2014/5 Module Title/Name: Advanced Mass Trasfer Module Code Credits: 10 Module Management Information Module Leader Name Qingchun Yuan Email Address q

  13. Synthesis and structure of nanocrystalline mixed Ce–Yb silicates

    SciTech Connect (OSTI)

    Ma?ecka, Ma?gorzata A., E-mail: M.Malecka@int.pan.wroc.pl; K?pi?ski, Leszek

    2013-07-15T23:59:59.000Z

    Graphical abstract: - Highlights: • New method of synthesis of nanocrystalline mixed lanthanide silicates is proposed. • Formation of A-type (Ce{sub 1?y}Yb{sub y}){sub 2}Si{sub 2}O{sub 7} in well dispersed Ce{sub 1?x}Yb{sub x}O{sub 2?(x/2)}–SiO{sub 2} system. • Formation of Yb{sub y}Ce{sub 9.33?y}(SiO{sub 4}){sub 6}O{sub 2} in agglomerated Ce{sub 1?x}Yb{sub x}O{sub 2?(x/2)}–SiO{sub 2} system. - Abstract: This work presents results of studies on synthesis and structure of mixed, nanocrystalline Ce–Yb silicates. Using TEM, XRD and FTIR we showed that heat treatment of nanocrystalline Ce{sub 1?x}Yb{sub x}O{sub 2?(x/2)} (x = 0.3, 0.5) mixed oxide supported on amorphous silica in reducing atmosphere, results in formation of Ce–Yb mixed silicates. Dispersion of the oxide on the silica surface and thus a local lanthanide/Si atomic ratio determines the stoichiometry of the silicate. Oxide crystallites uniformly dispersed on the silica surface transformed into A-(Ce{sub 1?y}Yb{sub y}){sub 2}Si{sub 2}O{sub 7} disilicate, while the agglomerated nanoparticles converted into Yb{sub y}Ce{sub 9.33?y}(SiO{sub 4}){sub 6}O{sub 2} oxyapatite silicate as an intermediate phase.

  14. Representing a 3-D Environment with a 2-D Map Structure Edward H.L. Fong William Adams Frederick Crabbe Alan C. Schultz

    E-Print Network [OSTI]

    Crabbe, Frederick

    planning, and localization. II. THE EVIDENCE GRID A wide variety of map representation structures (such Grid The 2-D evidence grid is one of the most popular map structures for autonomous mobile robotsRepresenting a 3-D Environment with a 2½-D Map Structure Edward H.L. Fong William Adams Frederick

  15. TRACES Centre Thermo iCE 3500 Flame AA Spectrometer

    E-Print Network [OSTI]

    Wells, Mathew G. - Department of Physical and Environmental Sciences, University of Toronto

    TRACES Centre Thermo iCE 3500 Flame AA Spectrometer Standard Operating Procedure 1. Turn on the lamp icon a. ID the lamp of choice and click the `Off' button to `On' b. Non-Thermo lamps MUST

  16. Ca2+-Doped CeBr3 Scintillating Materials

    SciTech Connect (OSTI)

    Guss, Paul [NSTec; Foster, Michael E. [SNL; Wong, Bryan M. [SNL; Doty, F. Patrick [SNL; Shah, Kanai [RMD; Squillante, Michael R. [RMD; Shirwadkar, Urmila [RMD; Hawrami, Rastgo [RMD; Tower, Josh [RMD; Yuan, Ding [NSTec

    2014-01-21T23:59:59.000Z

    Despite the outstanding scintillation performance characteristics of cerium tribromide (CeBr3) and cerium-activated lanthanum tribromide, their commercial availability and application are limited due to the difficulties of growing large, crack-free single crystals from these fragile materials. This investigation employed aliovalent doping to increase crystal strength while maintaining the optical properties of the crystal. One divalent dopant (Ca2+) was used as a dopant to strengthen CeBr3 without negatively impacting scintillation performance. Ingots containing nominal concentrations of 1.9% of the Ca2+ dopant were grown. Preliminary scintillation measurements are presented for this aliovalently doped scintillator. Ca2+-doped CeBr3 exhibited little or no change in the peak fluorescence emission for 371 nm optical excitation for CeBr3. The structural, electronic, and optical properties of CeBr3 crystals were studied using the density functional theory within the generalized gradient approximation. The calculated lattice parameters are in good agreement with the experimental data. The energy band structures and density of states were obtained. The optical properties of CeBr3, including the dielectric function, were calculated.

  17. Effects of CeO2 Support Facets on VOx/CeO2 Catalysts in Oxidative Dehydrogenation of Methanol

    SciTech Connect (OSTI)

    Li, Yan; Wei, Zhehao; Gao, Feng; Kovarik, Libor; Peden, Charles HF; Wang, Yong

    2014-05-13T23:59:59.000Z

    CeO2 supports with dominating facets, i.e., low index (100), (110) and (111) facets, are prepared. The facet effects on the structure and catalytic performance of supported vanadium oxide catalysts are investigated using oxidative dehydrogenation of methanol as a model reaction. In the presence of mixed facets, Infrared and Raman characterizations demonstrate that surface vanadia species preferentially deposit on CeO2 (100) facets, presumably because of its higher surface energy. At the same surface vanadium densities, VOx species on (100) facets show better dispersion, followed by (110) and (111) facets. The VOx species on CeO2 nanorods with (110) and (100) facets display higher activity and lower apparent activation energies compared to that on CeO2 nanopolyhedras with dominating (111) facets and CeO2 nanocubes with dominating (100) facets. The higher activity for VOx/CeO2(110) might be related to the more abundant oxygen vacancies present on the (110) facets, evidenced from Raman spectroscopic measurements.

  18. Continuing a Chandra survey of quasar radio jets Jonathan Gelbord & H.L. Marshall (MIT), D.A. Schwartz (SAO), D.M. Worrall & M. Birkinshaw (SAO & Bristol),

    E-Print Network [OSTI]

    Gelbord, Jonathan

    Continuing a Chandra survey of quasar radio jets Jonathan Gelbord & H.L. Marshall (MIT), D & Harris 1991, AJ 101, 1632; Marshall et al. 2002, ApJ 564, 683", 3C 390.3 !Harris, Leighly & Leahy 1998, ApJ 499, L149", and 3C 273 !Marshall et al. 2001, ApJ 549, L167". Inverse Compton X-rays? The energy

  19. Thin n-in-p planar pixel sensors and active edge sensors for the ATLAS upgrade at HL-LHC

    E-Print Network [OSTI]

    S. Terzo; A. Macchiolo; R. Nisius; B. Paschen

    2014-11-20T23:59:59.000Z

    Silicon pixel modules employing n-in-p planar sensors with an active thickness of 200 $\\mu$m, produced at CiS, and 100-200 $\\mu$m thin active/slim edge sensor devices, produced at VTT in Finland have been interconnected to ATLAS FE-I3 and FE-I4 read-out chips. The thin sensors are designed for high energy physics collider experiments to ensure radiation hardness at high fluences. Moreover, the active edge technology of the VTT production maximizes the sensitive region of the assembly, allowing for a reduced overlap of the modules in the pixel layer close to the beam pipe. The CiS production includes also four chip sensors according to the module geometry planned for the outer layers of the upgraded ATLAS pixel detector to be operated at the HL-LHC. The modules have been characterized using radioactive sources in the laboratory and with high precision measurements at beam tests to investigate the hit efficiency and charge collection properties at different bias voltages and particle incidence angles. The performance of the different sensor thicknesses and edge designs are compared before and after irradiation up to a fluence of $1.4\\times10^{16}n_{eq}/cm^{2}$.

  20. Homoleptic Ce(III) and Ce(IV) Nitroxide Complexes: Significant Stabilization of the 4+ Oxidation State

    SciTech Connect (OSTI)

    Bogart, Justin A.; Lewis, Andrew J.; Medling, Scott A.; Piro, Nicholas A.; Carroll, Patrick J.; Booth, Corwin H.; Schelter, Eric J.

    2014-06-25T23:59:59.000Z

    Electrochemical experiments performed on the complex Ce-IV[2-((BuNO)-Bu-t)py](4), where [2-((BuNO)-Bu-t)py](-) = N-tert-butyl-N-2-pyridylnitroxide, indicate a 2.51 V stabilization of the 4+ oxidation state of Ce compared to [(Bu4N)-Bu-n](2)[Ce(NO3)(6)] in acetonitrile and a 2.95 V stabilization compared to the standard potential for the ion under aqueous conditions. Density functional theory calculations suggest that this preference for the higher oxidation state is a result of the tetrakis(nitroxide) ligand framework at the Ce cation, which allows for effective electron donation into, and partial covalent overlap with, vacant 4f orbitals with delta symmetry. The results speak to the behavior of CeO2 and related solid solutions in oxygen uptake and transport applications, in particular an inherent local character of bonding that stabilizes the 4+ oxidation state. The results indicate a cerium(IV) complex that has been stabilized to an unprecedented degree through tuning of its ligand-field environment.

  1. (WPI-iCeMS) Pure Nano Drugs*

    E-Print Network [OSTI]

    Takada, Shoji

    (WPI-iCeMS) SN-38 50 nm * Pure Nano Drugs* SN-38 10 HepG2* JST (-STEP Permeation and Retention (EPR)* EPR 20100 nm SN-38 SN-38 * SN-38 * SN-38 20 SN-38 Pure Nano Drugs

  2. CE 4990 -Construction Scheduling Week 1: Steel Frame Project

    E-Print Network [OSTI]

    Mukherjee, Amlan

    CE 4990 - Construction Scheduling Week 1: Steel Frame Project Fall 2011 January 13, 2012 Introduction You are a construction manager for a project to build a steel frame for an office building1 of 964 pre-fabricated structural steel members will be used in the construction. The standard bay size

  3. Thermodynamic and Structural Features of Aqueous Ce(III)

    SciTech Connect (OSTI)

    Adriana Dinescu; Aurora E. Clark

    2008-10-01T23:59:59.000Z

    With a single f-electron, Ce(III) is the simplest test case for benchmarking the thermodynamic and structural properties of hydrated Ln(III) against varying density functionals and reaction field models, in addition to determining the importance of multiconfigurational character in their wave functions. Here, the electronic structure of Ce(H2O)x(H2O)y3+ (x = 8, 9; y = 0, 12-14) has been examined using DFT and CASSCF calculations. The latter confirmed that the wave function of octa- and nona-aqua Ce(III) is well-described by a single configuration. Benchmarking was performed for density functionals, reaction field cavity types, and solvation reactions against the experimental free energy of hydration, ?Ghyd(Ce3+). The UA0, UAKS, Pauling, and UFF polarized continuum model cavities displayed different performance, depending on whether one or two hydration shells were examined, and as a function of the size of the metal basis set. These results were essentially independent of the density functional employed. Using these benchmarks, the free energy for water exchange between CN = 8 and CN = 9, for which no experimental data are available, was estimated to be approximately -4 kcal/mol.

  4. Thermodynamic and Structural Features of Aqueous Ce(III)

    SciTech Connect (OSTI)

    Dinescu, Adriana; Clark, Aurora E.

    2008-10-10T23:59:59.000Z

    With a single f-electron, Ce(III) is the simplest test case for benchmarking the thermodynamic and structural properties of hydrated Ln(III) against varying density functionals and reaction field models, in addition to determining the importance of multiconfigurational character in their wave functions. Here, the electronic structure of Ce(H?O)x(H?O)y 3+ (x =8, 9; y= 0, 12-14) has been examined using DFT and CASSCF calculations. The latter confirmed that the wave function of octa- and nona-aqua Ce(III) is well-described by a single configuration. Benchmarking was performed for density functionals, reaction field cavity types, and solvation reactions against the experimental free energy of hydration, ?Ghyd(Ce3+). The UA0, UAKS, Pauling, and UFF polarized continuum model cavities displayed different performance, depending on whether one or two hydration shells were examined, and as a function of the size of the metal basis set. These results were essentially independent of the density functional employed. Using these benchmarks, the free energy for water exchange between CN = 8 and CN = 9, for which no experimental data are available, was estimated to be approximately -4 kcal/mol.

  5. Seven-quasiparticle bands in {sup 139}Ce

    SciTech Connect (OSTI)

    Chanda, Somen; Bhattacharjee, Tumpa; Bhattacharyya, Sarmishtha; Mukherjee, Anjali; Basu, Swapan Kumar; Ragnarsson, I.; Bhowmik, R. K.; Muralithar, S.; Singh, R. P.; Ghugre, S. S.; Pramanik, U. Datta [Variable Energy Cyclotron Centre, Kolkata 700064 (India); Division of Mathematical Physics, Lund Institute of Technology, Lund University, P. O. Box 118, S-22100 Lund (Sweden); Inter University Accelerator Centre, New Delhi 110067 (India); University Grants Commission and Department of Atomic Energy Consortium for Scientific Research, Kolkata 700098 (India); Saha Institute of Nuclear Physics, Kolkata 700064 (India)

    2009-05-15T23:59:59.000Z

    The high spin states in the {sup 139}Ce nucleus have been studied by in-beam {gamma}-spectroscopic techniques using the reaction {sup 130}Te({sup 12}C,3n){sup 139}Ce at E{sub beam}=65 MeV. A gamma detector array, consisting of five Compton-suppressed Clover detectors was used for coincidence measurements. 15 new levels have been proposed and 28 new {gamma} transitions have been assigned to {sup 139}Ce on the basis of {gamma}{gamma} coincidence data. The level scheme of {sup 139}Ce has been extended above the known 70 ns (19/2){sup -} isomer up to {approx}6.1 MeV in excitation energy and (35/2)({Dirac_h}/2{pi}) in spin. The spin-parity assignments for most of the newly proposed levels have been made using the deduced Directional Correlation from Oriented states of nuclei (DCO ratio) and the Polarization Directional Correlation from Oriented states (PDCO ratio) for the de-exciting transitions. The observed level structure has been compared with a large basis shell model calculation and also with the predictions from cranked Nilsson-Strutinsky (CNS) calculations. A general consistency has been observed between these two different theoretical approaches.

  6. CE-CERT Seminar Series June 2, 2009

    E-Print Network [OSTI]

    and methods for developing HDT emissions inventory. A statistical methodology for estimating truck traffic truck activity data is combined with truck emission factors to develop emissions inventory of HDTsCE-CERT Seminar Series June 2, 2009 "A Statistical Approach to Truck Traffic Speed Estimation

  7. CeSOS Highlights and AMOS Visions Conference

    E-Print Network [OSTI]

    Nørvåg, Kjetil

    Technology FME BIGCCS (-2017) International Carbon Capture and Storage Research Center FME Cedren (-2017 of Engineering Science and Technology, NTNU Chairman of the Boards in CeSOS and AMOS #12;Vision: Knowledge 2012 #12;Yet another successful year for the Faculty of Engineering Science and Technology! (Host

  8. CE 668 Urban Public Transportation Systems Reading List

    E-Print Network [OSTI]

    Hickman, Mark

    1 CE 668 Urban Public Transportation Systems Reading List General Reference Alan Black, Urban Mass Transportation Planning. New York: McGraw-Hill, 1995. Canadian Urban Transit Association, The Canadian Transit.), Public Transportation. Englewood Cliffs: Prentice-Hall, 1992. Vukan Vuchic, Urban Public Transportation

  9. CE 4990 -Construction Scheduling Integrating Cost and Schedule

    E-Print Network [OSTI]

    Mukherjee, Amlan

    CE 4990 - Construction Scheduling Integrating Cost and Schedule March 16, 2012 Definitions The goal) = BCWP/BCWS · Cost Variance (CV) = BCWP - ACWP · Cost Performance Index (CPI) = BCWP/ACWP · EAC = ACWP is to develop integrated metrics for measuring cost and schedule performance. This note provides guidelines

  10. 2014 Course Description Solid Waste Engineering -CE 477

    E-Print Network [OSTI]

    Barlaz, Morton A.

    2014 Course Description Solid Waste Engineering - CE 477 Engineering Principles of Solid Waste on course web site http://people.engr.ncsu.edu/barlaz/ Solid Waste Technology & Management by Christensen et al (eBook available through NCSU libraries) Solid waste management must be addressed by virtually

  11. ue Ce ec o o es o a Energy Efficiency &

    E-Print Network [OSTI]

    phenomena improving MEA and stack performance · Optimize fuel cells and systems for early marketue Ce ec o o es o a Energy Efficiency & Renewable Energy Fuel Cell Bus Workshop Overview and Purppose Dimitrios Papageorgopoulos Fuel Cell Technologgies Proggram DOE and DOT Joint Fuel Cell Bus

  12. Magnetic structures and interplay between rare-earth Ce and Fe magnetism in single-crystal CeFeAsO

    SciTech Connect (OSTI)

    Zhang, Qiang [Ames Laboratory; Tian, Wei [Ames Laboratory; Li, Haifeng [Ames Laboratory; Kim, Jong-Woo [Argonne Naitonal Laboratory; Yan, Jiaqiang [Ames Laboratory; McCallum, Robert William [Ames Laboratory; Lograsso, Thomas A. [Ames Laboratory; Zarestky, Jerel L. [Ames Laboratory; Budko, Sergey L. [Ames Laboratory; McQueeney, Robert J. [Ames Laboratory; Vaknin, David [Ames Laboratory

    2013-11-27T23:59:59.000Z

    Neutron and synchrotron resonant x-ray magnetic scattering (RXMS) complemented by heat capacity and resistivity measurements reveal the evolution of the magnetic structures of Fe and Ce sublattices in a CeFeAsO single crystal. The RXMS of magnetic reflections at the Ce LII edge shows a magnetic transition that is specific to the Ce antiferromagnetic long-range ordering at TCe? 4 K with short-range Ce ordering above TCe, whereas neutron diffraction measurements of a few magnetic reflections indicate a transition at T?? 12 K with an unusual order parameter. Detailed order-parameter measurements on several magnetic reflections by neutrons show a weak anomaly at 4 K that we associate with the Ce ordering. The successive transitions at TCe and T? can also be clearly identified by two anomalies in heat capacity and resistivity measurements. The higher transition temperature at T?? 12 K is mainly ascribed to Fe spin reorientation transition, below which Fe spins rotate uniformly and gradually in the ab plane. The Fe spin reorientation transition and short-range Ce ordering above TCe reflect the strong Fe-Ce couplings prior to long-range ordering of the Ce. The evolution of the intricate magnetic structures in CeFeAsO going through T? and TCe is proposed.

  13. CE FLNG, LLC - FE DKT. NO. 12-123-LNG - ORDER 3193 | Department...

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

    CE FLNG, LLC - FE DKT. NO. 12-123-LNG - ORDER 3193 CE FLNG, LLC - FE DKT. NO. 12-123-LNG - ORDER 3193 No reports submitted for this docket. More Documents & Publications...

  14. CE 467 / 567 HIGHWAY SAFETY AND OPERATIONS Fall 2006 Course Syllabus

    E-Print Network [OSTI]

    Hickman, Mark

    1 CE 467 / 567 HIGHWAY SAFETY AND OPERATIONS Fall 2006 Course Syllabus Catalog This course of class) #12;2 CE 467 / 567 HIGHWAY SAFETY AND OPERATIONS Fall 2006 Course Syllabus Course Outline: What

  15. SciTech Connect: Neutron Scattering of CeNi at the SNS-ORNL:...

    Office of Scientific and Technical Information (OSTI)

    Conference: Neutron Scattering of CeNi at the SNS-ORNL: A Preliminary Report Citation Details In-Document Search Title: Neutron Scattering of CeNi at the SNS-ORNL: A Preliminary...

  16. Role of dopant incorporation on the magnetic properties of Ce1...

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

    of Ce1-xNixO2 nanoparticles: An electron paramagnetic resonance study. Abstract: Nickel doping has been found to produce weak room-temperature ferromagnetism in CeO2 1. The...

  17. The suburban villa (munya) and court culture in Umayyad Cordoba (756-976 CE)

    E-Print Network [OSTI]

    Anderson, Glaire D

    2005-01-01T23:59:59.000Z

    As the capital of the Umayyad dynasty (r. 756 CE-1031 CE), the city of Cordoba developed into one of the most renowned urban centers of the western Mediterranean. The Great Mosque of Cordoba is the outstanding testament ...

  18. Proactive Design of n-Type (In, Ce) Filled Skutterudites Enabling...

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

    Design of n-Type (In, Ce) Filled Skutterudites Enabling High-Temperature Waste Heat Recovery Proactive Design of n-Type (In, Ce) Filled Skutterudites Enabling High-Temperature...

  19. CO Oxidation mechanism on CeO2-supported Au nanoclusters

    SciTech Connect (OSTI)

    Kim H. Y.; Henkelman, G.

    2013-09-08T23:59:59.000Z

    To reveal the richer chemistry of CO oxidation by CeO2 supported Au Nanoclusters(NCs)/Nanoparticles, we design Au13 and Au12 supported on a flat and a stepped-CeO2 model (Au/CeO2) and study various kinds of CO oxidation mechanisms at the Au-CeO2 interface and the Au NC as well.

  20. Neutron scattering of CeNi at the SNS-ORNL: A preliminary report

    SciTech Connect (OSTI)

    Mirmelstein, A. [Russian Federal Nuclear Center VNIITF, Snezhinsk, Russia; Podlesnyak, Andrey A [ORNL; Kolesnikov, Alexander I [ORNL; Saporov, B. [Oak Ridge National Laboratory (ORNL); Sefat, A.S. [Oak Ridge National Laboratory (ORNL); Tobin, J. G. [Lawrence Livermore National Laboratory (LLNL)

    2014-01-01T23:59:59.000Z

    This is a preliminary report of a neutron scattering experiment used to investigate 4f electron behavior in Ce.

  1. Approved Module Information for CE3102, 2014/5 Module Title/Name: Reaction Engineering Module Code: CE3102

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    : CE3102 School: Engineering and Applied Science Module Type: Standard Module New Module? No Module@aston.ac.uk Telephone Number 5211 Office MB122 Additional Module Tutor(s): Feroz Kabir. Level Description: Level 6 Module Aims: Familiarity with a structured approach to the design of chemical reactors using mass

  2. DAO O ce Note 1998-05 Version 1 Dated 12/06/1999 O ce Note Series on

    E-Print Network [OSTI]

    Assimilation Siegfried Schubert, Editor Documentation of the Physical-Space Statistical Analysis System (PSAS and sources, as well as the use of the multivariate formulation. An on-line version of this document can be obtained from the DAO. Robert M. Atlas, Acting Head Data Assimilation O ce Goddard Space Flight Center

  3. Approved Module Information for CE2105, 2014/5 Module Title/Name: Process Simulation Module Code: CE2105

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    the program to processes in chemicals manufacturing, power generation and petrochemical refiningApproved Module Information for CE2105, 2014/5 Module Title/Name: Process Simulation Module Code * Familiarity with the widely used process flowsheeting program AspenPlus. * The opportunity to apply

  4. Prospects on the search for invisible Higgs decays in the ZH channel at the LHC and HL-LHC: A Snowmass White Paper

    E-Print Network [OSTI]

    Hideki Okawa; Josh Kunkle; Elliot Lipeles

    2014-12-16T23:59:59.000Z

    We show prospects on a search for invisible decays of a Higgs boson at the Large Hadron Collider (LHC) and High Luminosity LHC (HL-LHC). This search is performed on a Higgs boson produced in association with a Z boson. We expect that the branching ratio of 17-22% (6-14%) could be excluded at 95% confidence level with 300 fb^{-1} (3000 fb^{-1}) of data at sqrt(s)=14 TeV. The range indicates different assumptions on the control of systematic uncertainties. Interpretations with Higgs-portal dark matter models are also considered.

  5. www.ce.udel.edu/speakers ENVIRONMENTAL ENGINEERING

    E-Print Network [OSTI]

    Kirby, James T.

    strategies" Dr. Angelia Seyfferth Assistant Professor Department of Plant and soil science UNIversITy Of DelAWAre MAR 08 "Tradeoffs in Water Quality Management: risk, economics and equity" Dr. Michael Kavanaugh-831-2442 "sustainable stormwater research" Dr. Robert G. Traver Director vIllANOvA CeNTer fOr The ADvANCeMeNT Of sUsTAINAbIlITy

  6. Approved Module Information for CE1007, 2014/5 Module Title/Name: Health, Safety & the Environment Module Code: CE1007

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    Module Code: CE1007 School: Engineering and Applied Science Module Type: Standard Module New ModuleApproved Module Information for CE1007, 2014/5 Module Title/Name: Health, Safety & the Environment? No Module Credits: 10 Module Management Information Module Leader Name George Drahun Email Address j

  7. Data:68ce477e-490b-4d2b-a92e-a7309a5ce45b | Open Energy Information

    Open Energy Info (EERE)

    >> Category:Categories Retrieved from "http:en.openei.orgwindex.php?titleData:68ce477e-490b-4d2b-a92e-a7309a5ce45b&oldid756745" Category: Utility Rates What links...

  8. Strongly correlated electron behavior : superconductivity and non-Fermi liquid behavior in Ce?-xRxColn?

    E-Print Network [OSTI]

    Gonzales, Eileen

    2009-01-01T23:59:59.000Z

    T ( ) c T ( c ab La Ce Pr Nd PmSm Eu Gd Tb Dy Ho Er Tm YbSm x Ce La Tb La Ce Pr Nd PmSm Eu Gd Tb Dy Ho Er Tm Yb (b)g -1) J(J+1) Ce (a) La Ce Pr Nd PmSm Eu Gd Tb Dy Ho Er Tm Yb

  9. On the heat capacity of Ce{sub 3}Al

    SciTech Connect (OSTI)

    Singh, Durgesh, E-mail: durgeshkushinagar@gmail.com; Samatham, S. Shanmukharao, E-mail: durgeshkushinagar@gmail.com; Venkateshwarlu, D., E-mail: durgeshkushinagar@gmail.com; Gangrade, Mohan, E-mail: durgeshkushinagar@gmail.com; Ganesan, V., E-mail: durgeshkushinagar@gmail.com [UGC-DAE Consortium for Scientific Research, University Campus, Khandwa Road, Indore-452001, Madhya Pradesh (India)

    2014-04-24T23:59:59.000Z

    Electrical resistivity and heat capacity measurements on Cerium based dense Kondo compound Ce{sub 3}Al have been reported. Clear signatures of first order structural transition at 108K, followed by a Kondo minimum and coherence are clearly seen in resistivity. The structural transition is robust and is not affected by magnetic fields. Heat capacity measurements reveal an anomalous enhancement in the heavy fermion character upon magnetic fields. Vollhardt invariance in specific heat C(T.H) curves have been observed at T=3.7K and at H ? 6T.

  10. LG: Order (2015-CE-14022) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetter Report:40PM toLED Lighting FactsWashers |5-CE-14022) LG:

  11. CE2 Capital Partners LLC | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:Power LP Biomass Facilityin Charts Jump to: navigation,CE2 Capital

  12. Distinctive Appliances: Order (2014-CE-23020) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny:Revised Finding of No53197E T ADRAFT ENVIRONMENTALCombustion4-CE-23020) Distinctive

  13. Distinctive Appliances: Order (2015-CE-14019) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny:Revised Finding of No53197E T ADRAFT ENVIRONMENTALCombustion4-CE-23020)

  14. Distinctive Appliances: Proposed Penalty (2015-CE-14019) | 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 DataDepartment of Energy Your Density Isn't Your Destiny:Revised Finding of No53197E T ADRAFT ENVIRONMENTALCombustion4-CE-23020)Energy

  15. Maxlite: Order (2015-CE-27018) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment3311, 3312), October 20122 DOEDepartment ofMicroalgal5-CE-27018)

  16. The influence of nano-architectured CeOx supports in RhPd/CeO? for the catalytic ethanol steam reforming reaction

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

    Divins, N. J.; Senanayake, S. D.; Casanovas, A.; Xu, W.; Trovarelli, A.; Llorca, J.

    2015-09-01T23:59:59.000Z

    The ethanol steam reforming (ESR) reaction has been tested over RhPd supported on polycrystalline ceria in comparison to structured supports composed of nanoshaped CeO? cubes and CeO? rods tailored towards the production of hydrogen. At 650-700 K the hydrogen yield follows the trend RhPd/CeO?-cubes > RhPd/CeO? -rods > RhPd/CeO?- polycrystalline, whereas at temperatures higher than 800 K the catalytic performance of all samples is similar and close to the thermodynamic equilibrium. The improved performance of RhPd/CeO?-cubes and RhPd/CeO? -rods for ESR at low temperature is mainly ascribed to higher water-gas shift activity and a strong interaction between the bimetallic -more »oxide support interaction. STEM analysis shows the existence of RhPd alloyed nanoparticles in all samples, with no apparent relationship between ESR performance and RhPd particle size. X-ray diffraction under operating conditions shows metal reorganization on {100} and {110} ceria crystallographic planes during catalyst activation and ESR, but not on {111} ceria crystallographic planes. The RhPd reconstructing and tuned activation over ceria nanocubes and nanorods is considered the main reason for better catalytic activity with respect to conventional catalysts based on polycrystalline ceria« less

  17. Effect of Sodium on the Catalytic Properties of VOx/CeO2 Catalysts...

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

    dehydrogenation (ODH) of methanol. The effect of sodium on the surface structure, redox properties, and surface aciditybasicity of VOxCeO2 was investigated using hydrogen...

  18. Ethanol Steam Reforming on Co/CeO2: The Effect of ZnO Promoter

    SciTech Connect (OSTI)

    Davidson, Stephen; Sun, Junming; Wang, Yong

    2013-12-02T23:59:59.000Z

    A series of ZnO promoted Co/CeO2 catalysts were synthesized and characterized using XRD, TEM, H2-TPR, CO chemisorption, O2-TPO, IR-Py, and CO2-TPD. The effects of ZnO on the catalytic performances of Co/CeO2 were studied in ethanol steam reforming. It was found that the addition of ZnO facilitated the oxidation of Co0 via enhanced oxygen mobility of the CeO2 support which decreased the activity of Co/CeO2 in C–C bond cleavage of ethanol. 3 wt% ZnO promoted Co/CeO2 exhibited minimum CO and CH4 selectivity and maximum CO2 selectivity. This resulted from the combined effects of the following factors with increasing ZnO loading: (1) enhanced oxygen mobility of CeO2 facilitated the oxidation of CHx and CO to form CO2; (2) increased ZnO coverage on CeO2 surface reduced the interaction between CHx/CO and Co/CeO2; and (3) suppressed CO adsorption on Co0 reduced CO oxidation rate to form CO2. In addition, the addition of ZnO also modified the surface acidity and basicity of CeO2, which consequently affected the C2–C4 product distributions.

  19. Capillary electrophoresis-fluorescence line narrowing system (CE-FLNS) for on-line structural characterization

    DOE Patents [OSTI]

    Jankowiak, R.J.; Small, G.J.; Shields, P.A.

    1999-04-27T23:59:59.000Z

    Capillary electrophoresis (CE) is interfaced with low temperature fluorescence line-narrowing (FLN) spectroscopy for on-line structural characterization of separated molecular analytes. 21 figs.

  20. Capillary electrophoresis-fluorescence line narrowing system (CE-FLNS) for on-line structural characterization

    DOE Patents [OSTI]

    Jankowiak, Ryszard J. (Ames, IA); Small, Gerald J. (Ames, IA); Shields, Peter A. (Reading, MA)

    1999-04-27T23:59:59.000Z

    Capillary electrophoresis (CE) is interfaced with low temperature fluorescence line-narrowing (FLN) spectroscopy for on-line structural characterization of separated molecular analytes.

  1. Formation and Luminescence Phenomena of LaF3:Ce3+ Nanoparticles...

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

    temperatures in dimethyl sulfoxide by the chemical reaction of lanthanum nitrate hydrate and cerium nitrate hexahydrate with ammonium fluoride. The formation of Ce3+ doped...

  2. 2-(3-Methoxyphenyl)-5-methyl-1,8-naphthyridin-4(1H)-one (HKL-1) induces G2/M arrest and mitotic catastrophe in human leukemia HL-60 cells

    SciTech Connect (OSTI)

    Hsu, Mei-Hua; Liu, Chin-Yu; Lin, Chiao-Min; Chen, Yen-Jung; Chen, Chun-Jen; Lin, Yu-Fu; Huang, Li-Jiau [Graduate Institute of Pharmaceutical Chemistry, China Medical University, Taichung, Taiwan, ROC (China)] [Graduate Institute of Pharmaceutical Chemistry, China Medical University, Taichung, Taiwan, ROC (China); Lee, Kuo-Hsiung [Natural Products Research Laboratories, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599 (United States) [Natural Products Research Laboratories, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599 (United States); Chinese Medicine Research and Development Center, China Medical University and Hospital, Taichung, Taiwan, ROC (China); Kuo, Sheng-Chu, E-mail: sckuo@mail.cmu.edu.tw [Graduate Institute of Pharmaceutical Chemistry, China Medical University, Taichung, Taiwan, ROC (China)] [Graduate Institute of Pharmaceutical Chemistry, China Medical University, Taichung, Taiwan, ROC (China)

    2012-03-01T23:59:59.000Z

    2-(3-Methoxyphenyl)-5-methyl-1,8-naphthyridin-4(1H)-one (HKL-1), a 2-phenyl-1,8-naphthyridin-4-one (2-PN) derivative, was synthesized and evaluated as an effective antimitotic agent in our laboratory. However, the molecular mechanisms are uncertain. In this study, HKL-1 was demonstrated to induce multipolar spindles, sustain mitotic arrest and generate multinucleated cells, all of which indicate mitotic catastrophe, in human leukemia HL-60 cells. Western blotting showed that HKL-1 induces mitotic catastrophe in HL-60 cells through regulating mitotic phase-specific kinases (down-regulating CDK1, cyclin B1, CENP-E, and aurora B) and regulating the expression of Bcl-2 family proteins (down-regulating Bcl-2 and up-regulating Bax and Bak), followed by caspase-9/-3 cleavage. These findings suggest that HKL-1 appears to exert its cytotoxicity toward HL-60 cells in culture by inducing mitotic catastrophe. Highlights: ? HKL-1 is a potential antimitotic agent against HL-60 cells. ? HKL-1 induces spindle disruption and sustained resulted in mitotic catastrophe. ? CENP-E and aurora B protein expressions significantly reduced. ? Bcl-2 family protein expressions altered and caspase-9/-3 activation. ? HKL-1 is an attractive candidate for possible use as a novel antimitotic agent.

  3. CO Oxidation at the Interface of Au Nanoclusters and the Stepped-CeO2(111) Surface

    SciTech Connect (OSTI)

    Kim H. Y.; Henkelman, G.

    2013-01-14T23:59:59.000Z

    To reveal the richer chemistry of CO oxidation by CeO2 supported Au Nanoclusters NCs)/Nanoparticles, we design a Au12 supported on a stepped-CeO2 model (Au/CeO2-step) and study various kinds of CO oxidation mechanisms at the interface of the Au/CeO2-step: oxygen spillover from the CeO2 to the Au NCs;2 CO oxidation by the O2 bound to the Au-Ce3+ interface;3 and CO oxidation by the Mars-van Krevelen (M-vK) mechanism.4 DFT+U calculations show that lattice oxygen at the CeO2 step edge oxidizes CO bound to Au NCs by the M-vK mechanism. CO2 desorption determines the rate of CO oxidation and the vacancy formation energy (Evac) is a reactivity descriptor for CO oxidation. The maximum Evac that insures spontaneous CO2 production is higher for the Au/CeO2-step than the Au/CeO2-surface suggesting that the CeO2-step is a better supporting material than the CeO2-surface for CO oxidation by the Au/CeO2. Our results also suggest that for CO oxidation by Au NCs supported on nano- or meso-structured CeO2, which is the case of industrial catalysts, the M-vK mechanism accounts for a large portion of the total activity.

  4. Spatial Distribution Of Cerium Valence In Model Planar Pd/Ce0...

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

    Distribution Of Cerium Valence In Model Planar PdCe0.7Zr0.3O2 Catalysts. Spatial Distribution Of Cerium Valence In Model Planar PdCe0.7Zr0.3O2 Catalysts. Abstract: The spatial...

  5. Short communication Chemically abrupt interface between Ce oxide and Fe films

    E-Print Network [OSTI]

    Kim, Sehun

    layer barrier. This situation can lead to partial oxidation of the ferromagnetic metals and degradationShort communication Chemically abrupt interface between Ce oxide and Fe films H.G. Lee a,b , D. Lee online 24 May 2005 Abstract A chemically abrupt Fe/Ce oxide interface can be formed by initial oxidation

  6. CE-MC: a multiple protein structure alignment server Chittibabu Guda1,

    E-Print Network [OSTI]

    Bourne, Philip E.

    CE-MC: a multiple protein structure alignment server Chittibabu Guda1, *, Sifang Lu1 , Eric D and Accepted April 28, 2004 ABSTRACT CE-MC server (http://cemc.sdsc.edu) provides a web- based facility server. INTRODUCTION Recent advances in the use of synchrotron beamlines, lab automations and robotics

  7. Ternary ceramic alloys of Zr-Ce-Hf oxides

    DOE Patents [OSTI]

    Becher, P.F.; Funkenbusch, E.F.

    1990-11-20T23:59:59.000Z

    A ternary ceramic alloy is described which produces toughening of zirconia and zirconia composites through the stress transformation from tetragonal phase to monoclinic phase. This alloy, having the general formula Ce[sub x]Hf[sub y]Zr[sub 1[minus]x[minus]y]O[sub 2], is produced through the addition of appropriate amounts of ceria and hafnia to the zirconia. Typically, improved toughness is achieved with about 5 to about 15 mol % ceria and up to about 40 mol % hafnia. The preparation of alloys of these compositions are given together with data as to the densities, tetragonal phase content, hardness and fracture toughness. The alloys are useful in preparing zirconia bodies as well as reinforcing ceramic composites. 1 fig.

  8. Ternary ceramic alloys of ZR-CE-HF oxides

    DOE Patents [OSTI]

    Becher, Paul F. (Oak Ridge, TN); Funkenbusch, Eric F. (White Bear Lake, MN)

    1990-01-01T23:59:59.000Z

    A ternary ceramic alloy which produces toughening of zirconia and zirconia composites through the stress transformation from tetragonal phase to monoclinic phase. This alloy, having the general formula Ce.sub.x Hf.sub.y Zn.sub.1-x-y O.sub.2, is produced through the addition of appropriate amounts of ceria and hafnia to the zirconia. Typically, improved toughness is achieved with about 5 to about 15 mol % ceria and up to about 40 mol % hafnia. The preparation of alloys of these compositions are given together with data as to the densities, tetragonal phase content, hardness and fracture toughness. The alloys are useful in preparing zirconia bodies as well as reinforcing ceramic composites.

  9. Fergusonite-type CeNbO{sub 4+?}: Single crystal growth, symmetry revision and conductivity

    SciTech Connect (OSTI)

    Bayliss, Ryan D. [Department of Materials, Imperial College London, Prince Consort Road, London, SW7 2BP (United Kingdom); Pramana, Stevin S.; An, Tao; Wei, Fengxia; Kloc, Christian L. [School of Materials Science and Engineering, 50 Nanyang Avenue, Nanyang Technological University, 639798 (Singapore); White, Andrew J.P. [Chemical Crystallography Laboratory, Department of Chemistry, Imperial College London, Exhibition Road, London, SW7 2AZ (United Kingdom); Skinner, Stephen J. [Department of Materials, Imperial College London, Prince Consort Road, London, SW7 2BP (United Kingdom); White, Timothy J. [School of Materials Science and Engineering, 50 Nanyang Avenue, Nanyang Technological University, 639798 (Singapore); Baikie, Tom, E-mail: tbaikie@ntu.edu.sg [School of Materials Science and Engineering, 50 Nanyang Avenue, Nanyang Technological University, 639798 (Singapore)

    2013-08-15T23:59:59.000Z

    Large fergusonite-type (ABO{sub 4}, A=Ce, B=Nb) oxide crystals, a prototype electrolyte composition for solid oxide fuel cells (SOFC), were prepared for the first time in a floating zone mirror furnace under air or argon atmospheres. While CeNbO{sub 4} grown in air contained CeNbO{sub 4.08} as a minor impurity that compromised structural analysis, the argon atmosphere yielded a single phase crystal of monoclinic CeNbO{sub 4}, as confirmed by selected area electron diffraction, powder and single crystal X-ray diffraction. The structure was determined in the standard space group setting C12/c1 (No. 15), rather than the commonly adopted I12/a1. AC impedance spectroscopy conducted under argon found that stoichiometric CeNbO{sub 4} single crystals showed lower conductivity compared to CeNbO{sub 4+?} confirming interstitial oxygen can penetrate through fergusonite and is responsible for the higher conductivity associated with these oxides. - Graphical abstract: Large fergusonite-type CeNbO{sub 4} crystals were prepared for the first time in a floating zone mirror furnace. Crystal growth in an argon atmosphere yielded a single phase monoclinic CeNbO4, as confirmed by selected area electron diffraction, powder and single crystal X-ray diffraction. The structure was determined in the standard space group setting C12/c1 (No. 15), rather than the commonly adopted I12/a1. AC impedance spectroscopy found CeNbO{sub 4} single crystals showed lower conductivity compared to CeNbO{sub 4+?} confirming interstitial oxygen can penetrate through fergusonite and is responsible for the higher conductivity associated with these oxides. Highlights: • Preparation of single crystals of CeNbO{sub 4} using a floating zone mirror furnace. • Correction to the crystal symmetry of the monoclinic form of CeNbO{sub 4}. • Report the conductivity of a single crystal of CeNbO{sub 4}.

  10. 1synQPSK Univ. Paderborn, Germany; CeLight Israel; Photline, France; IPAG, Germany Univ. Paderborn, Germany

    E-Print Network [OSTI]

    Noé, Reinhold

    1synQPSK Univ. Paderborn, Germany; CeLight Israel; Photline, France; IPAG, Germany synQPSK Univ. Paderborn, Germany CeLight Israel Photline, France IPAG, Germany Contract 004631 in FP6 IST-2002 Phase Shift Keying Transmission #12;2synQPSK Univ. Paderborn, Germany; CeLight Israel; Photline, France

  11. Synthesis and magnetic properties of the double layer perovskite CeBaFe2O5+w

    E-Print Network [OSTI]

    de Lima, Oscar Ferreira

    Synthesis and magnetic properties of the double layer perovskite CeBaFe2O5+w R. L. de Almeida,1 O The synthesis, crystallographic structure, and magnetic properties of polycrystalline single-phase samples of CeBaFe results on the successful prepara- tion and characterization of polycrystalline CeBaFe2O5+w samples. Ideal

  12. Ce-MXRF: the power of separation with bench top element sensitive detection

    SciTech Connect (OSTI)

    Miller, T. C. (Thomasin C.); Joseph, M. R. (Martha R.); Havrilla, G. J. (George J.)

    2002-01-01T23:59:59.000Z

    Capillary electrophoresis (CE) is a proven separation technique that offers highly efficient separation, rapid analysis, and minute sample consumption. When combined with a element specific detection scheme, it can be used for chemical speciation of biologically and environmentally relevant species such as metal containing proteins. In this study, a new tool was developed for separation and elemental detection. Specifically, a simple CE apparatus was constructed using a thin-walled fused Si capillary and interfaced with a bench top micro x-ray fluorescence (MXRF) system. X-ray excitation and detection of the separated sample volumes was performed using an EDAX Eagle II micro x-ray fluorescence system equipped with a Rh target excitation source and a SiLi detector. It was demonstrated that the system could be used for the separation and detection of two metals from one another, specifically Cu{sup 2+} and Co{sup 2+}. Free Co{sup 2+} could also be isolated from Co{sup 2+} bound to cyanocobalamin (Vitamin B-12). Other systems that were explored were the separation of two organics, ferritin from cyanocobalamin as well as the separation of the different Cu and Zn isoforms of metallothinein. CE-MXRF was also used to separate the important serum isoforms of transferrin. Direct comparisons were made between CE-MXRF system and other elemental separation techniques such as CE-PIXE, CE-synchrotron-XRF, and CE-ICPMS.

  13. Studies on Ca2+-Doped CeBr3 Scintillating Materials

    SciTech Connect (OSTI)

    Guss, P. [NSTec; Foster, M. E. [SNL; Wong, B. M. [SNL; Doty, F. P. [SNL; Shah, K. [RMD; Squillante, M. R. [RMD; Shirwadkar, U. [RMD; Hawrami, R. [RMD; Tower, J. [RMD; Yuan, D. [NSTec

    2013-09-01T23:59:59.000Z

    Despite the outstanding scintillation performance characteristics of cerium tribromide (CeBr3) and cerium-activated lanthanum tribromide (LaBr3:Ce), their commercial availability and application is limited due to the difficulties of growing large, crack-free single crystals from these fragile materials. The objective of this investigation was to employ aliovalent doping to increase crystal strength while maintaining the optical properties of the crystal. One divalent dopant (Ca2+) was investigated as a dopant to strengthen CeBr3 without negatively impacting scintillation performance. Ingots containing nominal concentrations of 1.9% of the Ca2+ dopant were grown. Preliminary scintillation measurements are presented for this aliovalently doped scintillator. Ca2+-doped CeBr3 exhibited little or no change in the peak fluorescence emission for 371 nm optical excitation for CeBr3. The structural, electronic, and optical properties of CeBr3 crystals were investigated using the density functional theory within generalized gradient approximation. The calculated lattice parameters are in good agreement with the experimental data. The energy band structures and density of states were obtained. The optical properties of CeBr3, including the dielectric function, were calculated.

  14. THE REMARKABLE XRAY JET IN THE QUASAR 4C 20.24 D.A. Schwartz 1 , H.L. Marshall 2 , J. Gelbord 2 , E.S. Perlman 3 , M. Georganopoulos 3 , M. Birkinshaw 4 ,

    E-Print Network [OSTI]

    Schwartz, Daniel

    1 THE REMARKABLE X­RAY JET IN THE QUASAR 4C 20.24 D.A. Schwartz 1 , H.L. Marshall 2 , J. Gelbord 2 by Chandra as part of a snapshot survey of ra­ dio jets (Marshall et al., 2005a). The survey, which is on the radio jet to the north (Marshall et al., 2006). The X­ray flux was roughly 6.5 #22;Jy, only about 20

  15. Results from a multi-wavelength survey of quasar jets Jonathan Gelbord & H.L. Marshall (MIT), D.A. Schwartz (SAO), D.M. Worrall & M. Birkinshaw (SAO & Bristol),

    E-Print Network [OSTI]

    Gelbord, Jonathan

    Results from a multi-wavelength survey of quasar jets Jonathan Gelbord & H.L. Marshall (MIT), D, including M87 (Biretta, Stern & Harris 1991, AJ 101, 1632; Marshall et al. 2002, ApJ 564, 683), 3C 390.3 (Harris, Leighly & Leahy 1998, ApJ 499, L149), and 3C 273 (Marshall et al. 2001, ApJ 549, L167). Inverse

  16. Cytotoxic and DNA-damaging effects of methyl tert-butyl ether and its metabolites on HL-60 cells in vitro

    SciTech Connect (OSTI)

    Tang, G.H. [Xian Medical Univ. (China); Shen, Y.; Shen, H.M. [National Univ. of Singapore (Singapore)] [and others

    1996-12-31T23:59:59.000Z

    Methyl tert-butyl ether (MTBE) is a widely used oxygenate in unleaded gasoline; however, few studies have been conducted on the toxicity of this compound. This study evaluates the cytotoxic and DNA-damaging effects of MTBE and its metabolites in a human haemopoietic cell line, HL-60. The metabolites of MTBE studied include tertiary butyl alcohol (TBA), {alpha}-hydroxyisobutyric acid (HIBA), and formaldehyde. Comet assay is used to assess DNA damage, and the cytotoxicity is investigated by lactate dehydrogenease (LDH) release. The results show no significant cytotoxic effects of MTBE, TBA, and HIBA over a concentration ranging from 1 to 30 mM. Formaldehyde, in contrast, causes a substantial LDH release at a concentration of 5 {mu}M. Hydrogen peroxide, a known oxidative agent, at concentrations ranging from 10 to 100 {mu}M, produces a significant dose-related increase in DNA damage, whereas a much higher concentration of MTBE (1 to 30 mM) is required to produce a similar observation. The genotoxic effects of TBA and HIBA appear to be identical to that of MTBE. Conversely, DNA damage is observed for formaldehyde at a relatively low concentration range (5 to 100 {mu}M). These findings suggest that MTBE and its metabolites, except formaldehyde, have relatively low cytotoxic and genotoxic effects. 16 refs., 4 figs.

  17. CE 363 -TRANSPORTATION ENGINEERING AND PAVEMENT DESIGN Fall 2009 Course Syllabus

    E-Print Network [OSTI]

    Hickman, Mark

    1 CE 363 - TRANSPORTATION ENGINEERING AND PAVEMENT DESIGN Fall 2009 Course Syllabus Catalog (4) CDT performance characteristics, highway geometric and pavement design principles; traffic analysis of transportation engineering and pavement design. Specifically, students should understand the basic concepts

  18. Ion-Beam-Induced Chemical Mixing at a Nanocrystalline CeO2&ndash...

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

    microscopy imaging and analysis suggest that this band of contrast is a cerium silicate phase with an approximate Ce:Si:O composition ratio of 1:1:3 in an amorphous nature....

  19. U.S. DEPARTMENT OF ENERGY EERE PROJECT MANAGEMENT CE:O;TER NFPA...

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

    CE:O;TER NFPA DETERMINATION RECIPIENT:Snohomish County PROJ ECT TITLE: Biodiesel Crusher and Dryer Facility Upgrades Page 1 of2 STATE: WA Funding Opportunity Announcement Number...

  20. 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

  1. 582014-15 Suggested Course Plan CompuTeR sCIenCe

    E-Print Network [OSTI]

    Zhou, Chongwu

    Algebra & Diff. Equations EE 364: Intro to Probability & Statistics or mATh 407: Probability Theory sCIenCe582014-15 Suggested Course Plan CompuTeR sCIenCe FIRST YEAR FALL: 16 units SPRING: 16 units SECOND104L,170 4 BASIC SCIENCE I 4 TECH. ELECTIVE I 4 TECH. ELECTIVE II 4 EE 364 MATH225or245 or MATH 407

  2. Results for aliovalent doping of CeBr{sub 3} with Ca{sup 2+}

    SciTech Connect (OSTI)

    Guss, Paul, E-mail: gusspp@nv.doe.gov [Remote Sensing Laboratory – Nellis, P. O. Box 98521, Las Vegas, Nevada 89193-8521 (United States); Foster, Michael E.; Wong, Bryan M.; Patrick Doty, F. [Materials Chemistry Department, Sandia National Laboratories, California, P. O. Box 969, Livermore, California 94551-0969 (United States); Shah, Kanai; Squillante, Michael R.; Shirwadkar, Urmila; Hawrami, Rastgo; Tower, Joshua [Radiation Monitoring Devices, Inc., 44 Hunt Street, Watertown, Massachusetts 02472 (United States); Yuan, Ding [National Security Technologies, LLC, Los Alamos Operations, P. O. Box 809, Los Alamos, New Mexico 87544-0809 (United States)

    2014-01-21T23:59:59.000Z

    Despite the outstanding scintillation performance characteristics of cerium tribromide (CeBr{sub 3}) and cerium-activated lanthanum tribromide, their commercial availability and application are limited due to the difficulties of growing large, crack-free single crystals from these fragile materials. This investigation employed aliovalent doping to increase crystal strength while maintaining the optical properties of the crystal. One divalent dopant (Ca{sup 2+}) was used as a dopant to strengthen CeBr{sub 3} without negatively impacting scintillation performance. Ingots containing nominal concentrations of 1.9% of the Ca{sup 2+} dopant were grown, i.e., 1.9% of the CeBr{sub 3} molecules were replaced by CaBr{sub 2} molecules, to match our target replacement of 1 out of 54 cerium atoms be replaced by a calcium atom. Precisely the mixture was composed of 2.26 g of CaBr{sub 2} added to 222.14 g of CeBr{sub 3}. Preliminary scintillation measurements are presented for this aliovalently doped scintillator. Ca{sup 2+}-doped CeBr{sub 3} exhibited little or no change in the peak fluorescence emission for 371?nm optical excitation for CeBr{sub 3}. The structural, electronic, and optical properties of CeBr{sub 3} crystals were studied using the density functional theory within the generalized gradient approximation. Calculated lattice parameters are in agreement with the experimental data. The energy band structures and density of states were obtained. The optical properties of CeBr{sub 3}, including the dielectric function, were calculated.

  3. An Update on Improvements to NiCE Support for RELAP-7

    SciTech Connect (OSTI)

    McCaskey, Alex [ORNL; Wojtowicz, Anna [ORNL; Deyton, Jordan H [ORNL; Patterson, Taylor C [ORNL; Billings, Jay Jay [ORNL

    2015-01-01T23:59:59.000Z

    The Multiphysics Object-Oriented Simulation Environment (MOOSE) is a framework that facilitates the development of applications that rely on finite-element analysis to solve a coupled, nonlinear system of partial differential equations. RELAP-7 represents an update to the venerable RELAP-5 simulator that is built upon this framework and attempts to model the balance-of-plant concerns in a full nuclear plant. This report details the continued support and integration of RELAP-7 and the NEAMS Integrated Computational Environment (NiCE). RELAP-7 is fully supported by the NiCE due to on-going work to tightly integrate NiCE with the MOOSE framework, and subsequently the applications built upon it. NiCE development throughout the first quarter of FY15 has focused on improvements, bug fixes, and feature additions to existing MOOSE-based application support. Specifically, this report will focus on improvements to the NiCE MOOSE Model Builder, the MOOSE application job launcher, and the 3D Nuclear Plant Viewer. This report also includes a comprehensive tutorial that guides RELAP-7 users through the basic NiCE workflow: from input generation and 3D Plant modeling, to massively parallel job launch and post-simulation data visualization.

  4. Approved Module Information for CE1102, 2014/5 Module Title/Name: Organic Chemistry for Engineers Module Code: CE1102

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    Module Code: CE1102 School: Engineering and Applied Science Module Type: Standard Module New Module of Delivery Learning Hours Lecture: 12 hours Tutorial: 2 hours Lab Session: 8 hours Independent Study: 80 reading, tutorial support and supervised laboratory sessions. Module Assessment Methods of Assessment

  5. Environmental effects of dredging: CE sediment collection and analysis methods. Technical note

    SciTech Connect (OSTI)

    Higgins, T.R.; Lee, C.R.

    1987-07-01T23:59:59.000Z

    This note summarizes responses to a recent survey of US Corps of Engineers (CE) sediment collection and analysis methods used in conjunction with planning dredging and disposal operations. The survey was designed to provide an overview of sediment collection and analysis programs and how these programs are conducted. Information gathered from the survey will be used to generate topics of discussion for a meeting to be held in June 1987 on sediment-analysis cost reduction. The survey and the meeting are part of a multi-year CE effort to reduce the overall costs associated with collecting and analyzing sediment samples.

  6. Mechanism of Methane Chemical Looping Combustion with Hematite Promoted with CeO2

    SciTech Connect (OSTI)

    Miller, Duane D.; Siriwardane, Ranjani

    2013-08-01T23:59:59.000Z

    Chemical looping combustion (CLC) is a promising technology for fossil fuel combustion that produces sequestration-ready CO{sub 2} stream, reducing the energy penalty of CO{sub 2} separation from flue gases. An effective oxygen carrier for CLC will readily react with the fuel gas and will be reoxidized upon contact with oxygen. This study investigated the development of a CeO{sub 2}-promoted Fe{sub 2}O{sub 3}?hematite oxygen carrier suitable for the methane CLC process. Composition of CeO{sub 2} is between 5 and 25 wt % and is lower than what is generally used for supports in Fe{sub 2}O{sub 3} carrier preparations. The incorporation of CeO{sub 2} to the natural ore hematite strongly modifies the reduction behavior in comparison to that of CeO{sub 2} and hematite alone. Temperature-programmed reaction studies revealed that the addition of even 5 wt % CeO{sub 2} enhances the reaction capacity of the Fe{sub 2}O{sub 3} oxygen carrier by promoting the decomposition and partial oxidation of methane. Fixed-bed reactor data showed that the 5 wt % cerium oxides with 95 wt % iron oxide produce 2 times as much carbon dioxide in comparison to the sum of carbon dioxide produced when the oxides were tested separately. This effect is likely due to the reaction of CeO{sub 2} with methane forming intermediates, which are reactive for extracting oxygen from Fe{sub 2}O{sub 3} at a considerably faster rate than the rate of the direct reaction of Fe{sub 2}O{sub 3} with methane. These studies reveal that 5 wt % CeO{sub 2}/Fe{sub 2}O{sub 3} gives stable conversions over 15 reduction/oxidation cycles. Lab-scale reactor studies (pulsed mode) suggest the methane reacts initially with CeO{sub 2} lattice oxygen to form partial oxidation products (CO + H{sub 2}), which continue to react with oxygen from neighboring Fe{sub 2}O{sub 3}, leading to its complete oxidation to form CO{sub 2}. The reduced cerium oxide promotes the methane decomposition reaction to form C + H{sub 2}, which continue to react with Fe{sub 2}O{sub 3}/Fe{sub 3}O{sub 4} to form CO/CO{sub 2} and H{sub 2}O. This mechanism is supported by the characterization studies, which also suggest that the formation of carbonaceous intermediates may affect the reaction rate and selectivity of the oxygen carrier.

  7. DFT+U Study of CeO2 and Its Native Defects

    E-Print Network [OSTI]

    Huang, Bolong; Gillen, Roland; Robertson, John

    2014-10-14T23:59:59.000Z

    in solid state fuel cells2, as a catalyst3-6, as a high-dielectric constant gate oxide7, and in resistance random access memories (ReRAM)8. Many properties of CeO2 are determined by its intrinsic defects9-23 and the unusual behavior of the semi-core Ce 4f... averaging scheme46 for spin- orbital coupling effect. The RRKJ method is chosen as optimization of pseudopotentials47. The PBE functional was chosen for PBE+U calculations with a kinetic cutoff energy of 750eV, which expands the valence electrons states...

  8. Observation of Strong Resonant Behavior in the Inverse Photoelectron Spectroscopy of Ce Oxide

    SciTech Connect (OSTI)

    Tobin, J G; Yu, S W; Chung, B W; Waddill, G D; Damian, E; Duda, L; Nordgren, J

    2009-12-15T23:59:59.000Z

    X-ray Emission Spectroscopy (XES) and Resonant Inverse Photoelectron Spectroscopy (RIPES) have been used to investigate the photon emission associated with the Ce3d5/2 and Ce3d3/2 thresholds. Strong resonant behavior has been observed in the RIPES of Ce Oxide near the 5/2 and 3/2 edges. Inverse Photoelectron Spectroscopy (IPES) and its high energy variant, Bremstrahlung Isochromat Spectroscopy (BIS), are powerful techniques that permit a direct interrogation of the low-lying unoccupied electronic structure of a variety of materials. Despite being handicapped by counting rates that are approximately four orders of magnitude less that the corresponding electron spectroscopies (Photoelectron Spectroscopy, PES, and X-ray Photoelectron Spectroscopy, XPS) both IPES and BIS have a long history of important contributions. Over time, an additional variant of this technique has appeared, where the kinetic energy (KE) of the incoming electron and photon energy (hv) of the emitted electron are roughly the same magnitude as the binding energy of a core level of the material in question. Under these circumstances and in analogy to Resonant Photoelectron Spectroscopy, a cross section resonance can occur, giving rise to Resonant Inverse Photoelectron Spectroscopy or RIPES. Here, we report the observation of RIPES in an f electron system, specifically the at the 3d{sub 5/2} and 3d{sub 3/2} thresholds of Ce Oxide. The resonant behavior of the Ce4f structure at the 3d thresholds has been addressed before, including studies of the utilization of the technique as a probe of electron correlation in a variety of Ce compounds. Interestingly, the first RIPES work on rare earths dates back to 1974, although under conditions which left the state of the surface and near surface regions undefined. Although they did not use the more modern terminology of 'RIPES,' it is clear that RIPES was actually first performed in 1974 by Liefeld, Burr and Chamberlain on both La and Ce based materials. In these experiments, the La and Ce metallic samples were attached to the anode of an x-ray tube and the x-ray emission characteristics were measured using a two crystal monochromator. The pressure in the x-ray tube was quoted as being below 2 x 10{sup -8} Torr. They did indeed observed resonant behavior at the M{alpha} (3d{sub 5/2}) and M{beta} (3d{sub 3/2}) thresholds. In fact, our results here will confirm the measurements made upon the Ce based sample used in by Liefeld et al. However, the state of the Ce sample surface and near surface regions are quite undefined in the study in Ref 9. For example, the authors suggest that they are probing Ce metal, since they cannot see any evidence of an OK{alpha} (1s) XES line. However, they do report the observation of FK{alpha} (1s) line, possibly due to the utilization of cerium fluoride in the sample preparation. Later, they tried to address these issues in a new ultrahigh vacuum system. Based upon our results, it is clear that their original sample surface was oxidized, using the word here in its more general context as in having lost electrons to the oxidizing agent, although whether the structure is an oxide or fluoride remains unclear. In any case, the primacy of Liefeld and coworkers in these measurements should be noted. Cerium and cerium oxide have been studied with a variety of spectroscopic techniques under UHV conditions. This includes Bremstrahlung Isochromat Spectroscopy or BIS, Photoelectron Spectroscopy, X-ray Absorption Spectroscopy, Electron Energy Loss Spectroscopy and Resonant XES, to name just a few. We will compare our results to those of other spectroscopies.

  9. Controlled Nanoparticle Metal Phosphates (Metal = Al, Fe, Ce, and Sr) Coatings on LiCoO2 Cathode Materials

    E-Print Network [OSTI]

    Cho, Jaephil

    Controlled Nanoparticle Metal Phosphates (Metal = Al, Fe, Ce, and Sr) Coatings on LiCoO2 Cathode and annealing temperature are used for MPO4 nanoparticle coatings M = Al, Fe, Ce, and SrH on a LiCoO2 cathode, the extent of the coating coverage is influenced by the nanoparticle size or morphology. Nanoparticles AlPO4

  10. Daylight photocatalysis performance of biomorphic CeO{sub 2} hollow fibers prepared with lens cleaning paper as biotemplate

    SciTech Connect (OSTI)

    Qian, Junchao; Chen, Feng [Department of Material Science and Engineering, Jiangsu University, 212013 Zhenjiang (China)] [Department of Material Science and Engineering, Jiangsu University, 212013 Zhenjiang (China); Wang, Fang; Zhao, Xiaobing [Department of Materials Science and Engineering, Changzhou University, 213164 Changzhou (China)] [Department of Materials Science and Engineering, Changzhou University, 213164 Changzhou (China); Chen, Zhigang, E-mail: ziyou1900@gmail.com [Department of Material Science and Engineering, Jiangsu University, 212013 Zhenjiang (China) [Department of Material Science and Engineering, Jiangsu University, 212013 Zhenjiang (China); Jiangsu Key Laboratory for Environment Functional Materials, 215009 Suzhou University of Science and Technology, Suzhou (China); State Key laboratory of Crystal Material, Shandong University, 250100 Jinan (China)

    2012-08-15T23:59:59.000Z

    Highlights: ? A novel, simple and eco-friendly approach for hierarchical, biomorphic CeO{sub 2} hollow fibers with mesoporous tube walls is presented by using paper as template. ? The biomorphic CeO{sub 2} fibers was composed of nanosheets with bimodal pore-size mesoporous distribution and exhibited high light-harvesting under sunlight irradiation. ? The CeO{sub 2} microfibers biomimicking the natural plant structures have promising application for photodegradation of organic pollutants in water. -- Abstract: Hierarchical, biomorphic CeO{sub 2} hollow fibers with mesoporous tube walls have been fabricated using lens cleaning paper as biotemplates. After sintered at 550 °C in air, the cellulosic fibers of paper were converted into micro-tubes composing of CeO{sub 2} crystallites with grain size about 8 nm. The photocatalytic activity of the CeO{sub 2} fibers was evaluated by photodegradation efficiency of methylene blue in aqueous solution under daylight irradiation. The characterized results show that the CeO{sub 2} fibers faithfully replicated micro-fibrous structure derived from original template and possessed dramatic enhanced photocatalytic activity compared with bulk CeO{sub 2}. This simple biotemplate method provides a cost-effective and eco-friendly route to obtain high performance photocatalysts.

  11. Biocommodity Engineering Lee R. Lynd,* Charles E. Wyman, and Tillman U. Gerngross

    E-Print Network [OSTI]

    California at Riverside, University of

    , the importance of feedstocks and cost-motivated process engineering, and the scale of application. Plant biomass of biomass, notably many cellulosic feedstocks, are potentially available at a large scale and are cost-competitive with low-cost petroleum whether considered on a mass or energy basis, and in terms of price defined

  12. Hydrolysis of different chain length xylooliogmers by cellulase and hemicellulase Qing Qing, Charles E. Wyman

    E-Print Network [OSTI]

    California at Riverside, University of

    to assess how Spezyme CP cellulase, Novozyme 188 b-glucosidase, Multifect xylanase, and non-commercial b

  13. A review of "William Camden. A Life in Context" by Wyman H. Herendeen

    E-Print Network [OSTI]

    Wright, Jonathan

    2010-01-01T23:59:59.000Z

    not say (sana conscientia) that his carriage & demeanore had bin all along suitable to his condition? (Michael G. Hall, The Last American Puritan [1988], 64). ...

  14. Dilute Acid and Autohydrolysis Pretreatment Bin Yang and Charles E. Wyman

    E-Print Network [OSTI]

    California at Riverside, University of

    to make cellulose and hemi- cellulose susceptible to an enzymatic hydrolysis step for generation 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Jonathan R. Mielenz (ed.), Biofuels, biological catalysis was substituted for the second thermochemical step to enhance glucose yields from

  15. Review: Continuous hydrolysis and fermentation for cellulosic ethanol production Simone Brethauer, Charles E. Wyman *

    E-Print Network [OSTI]

    California at Riverside, University of

    with powerful economic, environmental, and strategic attributes, but production costs must be competitive. All rights reserved. 1. Introduction According to the recent report of the Intergovernmental Panel to 379 ppm in 2005, primarily as a result of fossil fuel use (IPCC, 2007). Overall, petroleum

  16. The CompuTer SCienCe program The bachelor of science degree in computer science

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    The CompuTer SCienCe program The bachelor of science degree in computer science offered by the Watson School is accredited by the Computing Accreditation Commission of ABET Inc. (mailing address: 111 in the fundamentals of computer science, elements of practical application and an appreciation for liberal learning

  17. In situ corrosion analysis of Al-Zn-In-Mg-Ti-Ce sacrificial anode alloy

    SciTech Connect (OSTI)

    Ma Jingling, E-mail: majingling.student@sina.com; Wen Jiuba; Zhai Wenxia; Li Quanan

    2012-03-15T23:59:59.000Z

    The corrosion behaviour of Al-5Zn-0.02In-1Mg-0.05Ti-0.5Ce (wt.%) alloy has been investigated by immersion test, scanning electron microscopy, energy dispersive X-ray detector, electrochemical impedance spectroscopy and electrochemical noise. The results show that there exist different corrosion types of the alloy in 3.5% NaCl solution with the immersion time. At the initial stage of immersion, pitting due to the precipitates predominates the corrosion with a typical inductive loop at low frequencies in electrochemical impedance spectroscopy. The major precipitates of the alloy are MgZn{sub 2} and Al{sub 2}CeZn{sub 2} particles. The corrosion potentials of the bulk MgZn{sub 2} and Al{sub 2}CeZn{sub 2} alloys are negative with respect to that of {alpha}-Al, so the MgZn{sub 2} and Al{sub 2}CeZn{sub 2} precipitates can act as activation centre and cause the pitting. In the late corrosion, a relative uniform corrosion predominates the corrosion process controlled by the dissolution/precipitation of the In ions and characterized by a capacitive loop at medium-high frequencies in electrochemical impedance spectroscopy. The potential noise of the pitting shows larger amplitude fluctuation and lower frequency, but the potential noise of the uniform corrosion occurs with smaller amplitude fluctuation and higher frequency.

  18. PSD Methods Comparison and Discrimination Efficiency Study for LaBr3:Ce Detector

    E-Print Network [OSTI]

    Cang, Jirong; Zeng, Zhi; Cheng, Jianping; Liu, Yinong; Li, Junli

    2015-01-01T23:59:59.000Z

    LaBr3:Ce scintillator has been widely studied for nuclear spectroscopy because of its optimal energy resolution (CCM, the correlation between the CCM feature value distribution and the total charge (energy) was quantitatively analyzed, and a fitting equation of the correlation is inferred and verified with experiment. With the equation, an energy-dependent threshold was chosen to optimize the discrim...

  19. Technical Report No. 480 CE: The Classi er Estimator Framework for Data mining

    E-Print Network [OSTI]

    Dalkilic, Mehmet

    Technical Report No. 480 CE: The Classi er Estimator Framework for Data mining Mehmet M. Dalkilic a coherent framework for data mining in the relational model. Observing that data mining depends on two. The classi er indicates the target of the data mining investigation. The classi er may be di cult to express

  20. DEPARTMENT OF THE NAVY OFfiCE OF THE CHIEF OF NAVAL OPERATIONS

    E-Print Network [OSTI]

    DEPARTMENT OF THE NAVY OFfiCE OF THE CHIEF OF NAVAL OPERATIONS 2000 NAVY PENTAGON WASHINGTON, DC: Chief of Naval Operations Subj , NAVY PASSENGER TRAVEL Ref: (al 000 Di rective 5154.29 of 9 Marc h 1993 on the management , execution, and funding of passenger travel for Navy personne l . This i n struction

  1. Author's personal copy Prepration and photoluminescence properties of Ce doped lutetium silicate

    E-Print Network [OSTI]

    Cao, Guozhong

    Author's personal copy Prepration and photoluminescence properties of Ce doped lutetium silicate silicate Cerium Solegel Photoluminescence Lu2SiO5 a b s t r a c t Cerium doped lutetium silicate powders%). The synthesized lutetium silicate powders were investigated by X-ray diffraction (XRD), TG-DTA, SEM

  2. Laser Surface Modification of a Crystalline Al-Co-Ce Alloy for Enhanced Corrosion

    E-Print Network [OSTI]

    Fitz-Gerald, James M.

    #12;Laser Surface Modification of a Crystalline Al-Co-Ce Alloy for Enhanced Corrosion Resistance hardness, structure manipula- tion, and improvements in corrosion resistance of metallic materials.[1 surface modify steel and aluminum alloys for improved corrosion resistance.[3,4] The enhanced corrosion

  3. Logiciel de Gestion de Version Qu'est-ce qu'un Version Control System (VCS) ?

    E-Print Network [OSTI]

    Tichit, Laurent

    Logiciel de Gestion de Version Git Qu'est-ce qu'un Version Control System (VCS) ? Appelé également Logiciel de Gestion de Révision (RCS), un VCS est un outil qui permet de : · de suivre l'évolution d revenir en arrière en cas de problème ; · de retenir qui a effectué chaque modification de chaque fichier

  4. 28 Computing in SCienCe & engineering 1521-9615/09/$26.00 2009 ieee

    E-Print Network [OSTI]

    Droegemeier, Kelvin K.

    28 Computing in SCienCe & engineering 1521-9615/09/$26.00 © 2009 ieee CopubliShed by the ieee CS to various science and engineering fields? Experts in everything from astronomy to seismology envision and Engineering in the Petascale Era P etaflops computing is here, and sus- tained petaflops (petascale) computing

  5. Energy Based Methods in Wind Turbine Control CeSOS Highlights and AMOS Visions

    E-Print Network [OSTI]

    Nørvåg, Kjetil

    Energy Based Methods in Wind Turbine Control CeSOS Highlights and AMOS Visions Morten D. Pedersen 1 / 26 #12;This talk 1 Background 2 Understanding the Wind Turbine 3 Nonlinear Turbine Modeling 4;Background The Problem Previously stable wind turbine systems began exhibiting resonant behavior when put

  6. Phase relations and crystal structures in the system Ce-Ni-Zn at 800 Degree-Sign C

    SciTech Connect (OSTI)

    Malik, Z.; Grytsiv, A. [Institute of Physical Chemistry, University of Vienna, Waehringerstrasse 42, A-1090 Vienna (Austria)] [Institute of Physical Chemistry, University of Vienna, Waehringerstrasse 42, A-1090 Vienna (Austria); Rogl, P., E-mail: peter.franz.rogl@univie.ac.at [Institute of Physical Chemistry, University of Vienna, Waehringerstrasse 42, A-1090 Vienna (Austria); Giester, G. [Institute of Mineralogy and Crystallography, University of Vienna, Althanstrasse 14, A-1090 Vienna (Austria)] [Institute of Mineralogy and Crystallography, University of Vienna, Althanstrasse 14, A-1090 Vienna (Austria)

    2012-10-15T23:59:59.000Z

    Phase relations have been established for the system Ce-Ni-Zn in the isothermal section at 800 Degree-Sign C using electron microprobe analysis and X-ray powder diffraction. Phase equilibria at 800 Degree-Sign C are characterized by a large region for the liquid phase covering most of the Ce-rich part of the diagram, whereas a Zn-rich liquid is confined to a small region near the Zn-corner of the Gibbs triangle. Whereas solubility of Ce in the binary Ni-Zn phases is negligible, mutual solubilities of Ni and Zn at a constant Ce content are large at 800 Degree-Sign C for most Ce-Zn and Ce-Ni compounds. The solid solution Ce(Ni{sub 1-x}Zn{sub x}){sub 5} with the CaCu{sub 5}-type is continuous throughout the entire section and for the full temperature region from 400 to 800 Degree-Sign C. Substitution of Zn by Ni is found to stabilize the structure of CeZn{sub 11} to higher temperatures. At 800 Degree-Sign C Ce(Ni{sub x}Zn{sub 1-x}){sub 11} (0.03{<=}x{<=}0.22) appears as a ternary solution phase. Similarly, a rather extended solution forms for Ce{sub 2}(Ni{sub x}Zn{sub 1-x}){sub 17} (0{<=}x{<=}0.53). Detailed data on atom site occupation and atom parameters were derived from X-ray structure analyses for single crystals of Ce{sub 2+y}(Ni{sub x}Zn{sub 1-x}){sub 17}, y=0.02, x=0.49 (a=0.87541(3), c=1.25410(4) nm; Th{sub 2}Zn{sub 17} type with space group R3{sup Macron }m,R{sub F{sup 2}}=0.018) and Ce(Ni{sub 0.18}Zn{sub 0.82}){sub 11} (a=1.04302(2), c=0.67624(3)nm, BaCd{sub 11} type with space group I4{sub 1}/amd, R{sub F{sup 2}}=0.049). - Graphical abstract: Ce-Ni-Zn isothermal section at 800 Degree-Sign C. Highlights: Black-Right-Pointing-Pointer Phase relations were determined for the system Ce-Ni-Zn in the section at 800 Degree-Sign C. Black-Right-Pointing-Pointer A continuous solid solution Ce(Ni{sub 1-x}Zn{sub x}){sub 5}, 0{<=}x{<=}1, forms between 400 and 800 Degree-Sign C. Black-Right-Pointing-Pointer Zn/Ni substitution stabilizes the ternary phase Ce(Zn{sub 1-x}Ni{sub x}){sub 11}, 0.03{<=}x{<=}0.22, 800 Degree-Sign C. Black-Right-Pointing-Pointer An extended solution forms for Ce{sub 2}(Ni{sub x}Zn{sub 1-x}){sub 17} (0{<=}x{<=}0.53). Black-Right-Pointing-Pointer Crystal data are given: Ce{sub 2+y}(Ni{sub x}Zn{sub 1-x}){sub 17} (Th{sub 2}Zn{sub 17}), Ce(Ni{sub 0.18}Zn{sub 0.82}){sub 11} (BaCd{sub 11}).

  7. Magnetization switching of rare earth orthochromite CeCrO{sub 3}

    SciTech Connect (OSTI)

    Cao, Yiming; Cao, Shixun, E-mail: sxcao@shu.edu.cn; Ren, Wei; Feng, Zhenjie; Yuan, Shujuan; Kang, Baojuan; Zhang, Jincang [Department of Physics, Shanghai University, Shanghai 200444 (China); Lu, Bo [Laboratory for Microstructures, Shanghai University, Shanghai 200444 (China)

    2014-06-09T23:59:59.000Z

    We report the synthesis of single phase rare earth orthochromite CeCrO{sub 3} and its magnetic properties. A canted antiferromagnetic transition with thermal hysteresis at T?=?260?K is observed, and a magnetic compensation (zero magnetization) near 133?K is attributed to the antiparallel coupling between Ce{sup 3+} and Cr{sup 3+} moments. At low temperature, field induced magnetization reversal starting from 43?K for H?=?1.2 kOe reveals the spin flip driven by Zeeman energy between the net moments and the applied field. These findings may find potential uses in magnetic switching devices such as nonvolatile magnetic memory which facilitates two distinct states of magnetization.

  8. Josephson effect in CeCoIn{sub 5} microbridges as seen via quantum interferometry

    SciTech Connect (OSTI)

    Foyevtsov, Oleksandr; Porrati, Fabrizio; Huth, Michael [Physikalisches Institut, Goethe University, Frankfurt am Main, 60438 (Germany)

    2011-07-15T23:59:59.000Z

    A superconducting quantum interference device (SQUID) was prepared on a micron-sized single crystal using a selected growth domain of a thin film of CeCoIn{sub 5} grown by molecular beam epitaxy. SQUID voltage oscillations of good quality were obtained as well as interference effects stemming from the individual Josephson microbridges. The transport characteristics in the superconducting state exhibited several peculiarities which we ascribe to the periodic motion of vortices in the microbridges. The temperature dependence of the Josephson critical current shows good correspondence to the Ambegaokar-Baratoff relation, expected for the ideal Josephson junction. The results indicate a promising pathway to identify the type of order parameter in CeCoIn{sub 5} by means of phase-sensitive measurements on microbridges.

  9. Scintillation properties of some Ce[sup 3+] and Pr[sup 3+] doped inorganic crystals

    SciTech Connect (OSTI)

    Dorenbos, P.; Visser, R.; Eijk, C.W.E. van (Delft Univ. of Technology (Netherlands). Dept. of Applied Physics); Khaidukov, N.M. (N.S. Kurnakov Inst. of General and Inorganic Chemistry, Moscow (Russian Federation)); Korzhik, M.V. (Inst. of Nuclear Problems, Minsk (Russian Federation))

    1993-08-01T23:59:59.000Z

    The scintillations properties of Ce[sup 3+] and Pr[sup 3+] doped complex fluoride crystals of composition CsGd[sub 2]F[sub 7] and K[sub 2]YF[sub 5] and of Pr[sup 3+] doped Y[sub 3]Al[sub 5]O[sub 12] single crystals were studied by means of x-ray and gamma ray excitation. The Ce[sub 3+] and Pr[sub 3+] doped fluoride crystals show 5d-4f luminescences at wavelengths near 340 nm and 240 nm, respectively. 5d-4f luminescence of Pr[sup 3+] doped Y[sub 3]Al[sub 5]O[sub 12] is observed between 300 and 400 nm. The authors present the absolute light yield in photons/MeV together with results from scintillation decay time experiments.

  10. Reactivity and reaction intermediates for acetic acid adsorbed on CeO2(111)

    SciTech Connect (OSTI)

    Calaza, Florencia [Max Planck Society, Fritz Haber Institute; Chen, Tsung-Liang [ORNL; Mullins, David R [ORNL; Xu, Ye [Louisiana State University; Overbury, Steven {Steve} H [ORNL

    2015-01-01T23:59:59.000Z

    Adsorption and reaction of acetic acid on a CeO2(1 1 1) surface was studied by a combination of ultra-highvacuum based methods including temperature desorption spectroscopy (TPD), soft X-ray photoelectronspectroscopy (sXPS), near edge X-ray absorption spectroscopy (NEXAFS) and reflection absorption IRspectroscopy (RAIRS), together with density functional theory (DFT) calculations. TPD shows that thedesorption products are strongly dependent upon the initial oxidation state of the CeO2surface, includingselectivity between acetone and acetaldehyde products. The combination of sXPS and NEXAFS demon-strate that acetate forms upon adsorption at low temperature and is stable to above 500 K, above whichpoint ketene, acetone and acetic acid desorb. DFT and RAIRS show that below 500 K, bridge bondedacetate coexists with a moiety formed by adsorption of an acetate at an oxygen vacancy, formed bywater desorption.

  11. Development and evaluation of a coupled hydrodynamic (FVCOM) and water quality model (CE-QUAL-ICM)

    SciTech Connect (OSTI)

    Kim, Taeyun; Labiosa, Rochelle G.; Khangaonkar, Tarang; Yang, Zhaoqing; Chen, Changsheng; Qi, Jianhua; Cerco, Carl

    2010-01-08T23:59:59.000Z

    Recent and frequent fish-kills in waters otherwise known for their pristine high quality, created increased awareness and urgent concern regarding potential for degradation of water quality in Puget Sound through coastal eutrophication caused by increased nutrient loading. Following a detailed review of leading models and tools available in public domain, FVCOM and CE-QUAL-ICM models were selected to conduct hydrodynamic and water quality simulations for the fjordal waters of Puget Sound.

  12. One-dimensional chain structures produced by Ce on Si(111)

    E-Print Network [OSTI]

    Kim, Sehun

    of rare-earth metals on semicon- ductors, especially Si [1], by self-assembly has at- tracted considerable) surfaces have been reported for various rare-earth metals (e.g., Ce [6­8], Sm [9], Er [10,11], Eu [12 structures have been reported for many rare-earth metals, such as 3 · 2, 5 · 1, and 7 · 1 for Sm, 5 · 2

  13. Synthesis of Transient Climate Evolution of the last 21-kyr (SynTraCE-21)

    SciTech Connect (OSTI)

    Zhengyu Liu

    2011-05-06T23:59:59.000Z

    Climate evolution in the last 21,000 years provides critical observations for testing state-of-the-art climate models on the simulation of climate evolution and abrupt climate changes. Proxy evidences and new modeling activities have led to rapid advances in our understanding of climate change for this past time period. This funding helps to support the first international SynTraCE-21k workshop at Mount Hood, Oregon from 10-13 October, 2010.

  14. Hydrides of CeNi/sub 5/, MmNi/sub 5/, Ca/sub 0/ /sub 2/(Ce/sub 0/ /sub 65/Mm/sub 0/ /sub 35/)/sub 0/ /sub 8/Ni/sub 5/, Ca/sub 0/ /sub 2/Ce/sub 0/ /sub 8/Ni/sub 5/, Ca/sub 0/ /sub 2/Mm/sub 0/ /sub 8/Ni/sub 5/, and mixed CeNi/sub 5//MmNi/sub 5/

    SciTech Connect (OSTI)

    Lakner, J.F.; Chow, T.S.

    1982-09-01T23:59:59.000Z

    Six intermetallic alloys (CeNi/sub 5/, MmNi/sub 5/, Ca/sub 0/ /sub 2/(Ce/sub 0/ /sub 65/Mm/sub 0/ /sub 35/)/sub 0/ /sub 8/Ni/sub 5/, Ca/sub 0/ /sub 2/Ce/sub 0/ /sub 8/Ni/sub 5/, Ca/sub 0/ /sub 2/Mm/sub 0/ /sub 8/Ni/sub 5/, and a mixed alloy, CeNi/sub 5//MmNi/sub 5/) were investigated with respect to their suitability to provide high hydrogen capacity and their potential for use in providing substantial hydrogen pressure at both low and high temperatures. A second phase of our investigation dealt with ball-milling and hydriding and dehydriding cycles to produce fine particles for use in hydride powder transfer studies. A summary of several Van't Hoff plots is also included for hydride-forming alloys.

  15. A dipole polarizable potential for reduced and doped CeO[subscript 2] obtained from first principles

    E-Print Network [OSTI]

    Burbano, Mario

    In this paper we present the parameterization of a new interionic potential for stoichiometric, reduced and doped CeO[subscript 2]. We use a dipole polarizable potential (DIPPIM: the dipole polarizable ion model) and ...

  16. Impact of the CE mark approval on exit opportunities and validation for early stage medical device companies

    E-Print Network [OSTI]

    Kothari, Ashish (Ashish Shrikant)

    2011-01-01T23:59:59.000Z

    The aim of this thesis was to look at the impact of acquiring the CE marking approval on the outcome of early stage medical device companies, specifically its impact on strategic acquisition opportunities and on valuation. ...

  17. The thermal conductivity of amorphous Ce1-xAlx alloys between 1.5 and 350 K

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Al alloys as a function of temperature. For five alloys with an aluminium concentration increasing from 12L-801 The thermal conductivity of amorphous Ce1-xAlx alloys between 1.5 and 350 K A. Guessous and J'alliages amorphes de CeAl. Pour 5 alliages dont la teneur en aluminium varie de 12 at. % à 86 at. %, nous n

  18. Effect of Sodium on the Catalytic Properties of VOx/CeO2 Catalysts for Oxidative Dehydrogenation of Methanol

    SciTech Connect (OSTI)

    Li, Yan; Wei, Zhehao; Sun, Junming; Gao, Feng; Peden, Charles HF; Wang, Yong

    2013-03-21T23:59:59.000Z

    A series of VOx/CeO2 catalysts with various sodium loadings (Na/V ratio from 0 to 1) has been studied for oxidative dehydrogenation (ODH) of methanol. The effect of sodium on the surface structure, redox properties, and surface acidity/basicity of VOx/CeO2 was investigated using hydrogen temperature-programmed reduction (H2-TPR), Raman spectroscopy, and Diffuse Reflectance Infrared Fourier Transform spectroscopy (DRIFT). The experimental results indicate that the effect of sodium on VOx/CeO2 is highly dependent on the Na/V ratio. At a low Na/V ratio (Na/V<0.25), sodium addition only slightly decreases the redox properties of VOx/CeO2 and has little effect on its activity and selectivity to formaldehyde, even though the Brönsted acidity is almost completely eliminated at a Na/V ratio of 0.25. At a high Na/V ratio (Na/V>0.25), sodium addition greatly alters the nature of the active sites by V-O-Ce bond cleavage and V-O-Na bond formation, leading to significantly reduced activity of the VOx/CeO2 catalysts. At Na/V>0.25, the selectivity to formaldehyde also decreases with increasing Na/V ratio due to: (1) the suppressed reducibility of VOx, and (2) increased basicity leading to increased CO2.

  19. Pulse studies to decipher the role of surface morphology in CuO/CeO? nanocatalysts for the water gas shift reaction

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

    Rodriguez, Jose A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Zhao, Fuzhen [South-Central Univ. for Nationalities, Wuhan, Hubei (China); Brookhaven National Lab., Upton, NY (United States); Liu, Zongyuan [Brookhaven National Lab. (BNL), Upton, NY (United States); Xu, Wenqian [Brookhaven National Lab. (BNL), Upton, NY (United States); Yao, Siyu [Brookhaven National Lab. (BNL), Upton, NY (United States); Si, Rui [Brookhaven National Lab. (BNL), Upton, NY (United States); Johnston-Peck, Aaron C. [Brookhaven National Lab. (BNL), Upton, NY (United States); Martinez-Arias, Arturo [Inst. de Catalisis y Petroleoquimica, Consejo Superior de Investigaciones Cientificas, Madrid (Spain); Hanson, Jonathan C. [Brookhaven National Lab. (BNL), Upton, NY (United States); Senanayake, Sanjaya D. [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2015-03-01T23:59:59.000Z

    The water-gas shift reaction (WGS, CO + H?O ? CO?) was studied over CuO/CeO? catalysts with two different ceria particle morphohologies, in the form of nanospheres (ns) and nanocubes (nc). To understand the strong dependence of the WGS reaction activity on the ceria nanoshapes, pulses of CO (without and with water vapor) were employed during in situ X-ray diffraction (XRD) and X-ray absoprtion near edge structure (XANES) measurements done to characterize the catalysts. The results showed that CuO/CeO? (ns) exhibited a substantially better activity than CuO/CeO? (nc). The higher activity was associated with the unique properties of CuO/CeO? (ns), such as the easier reduction of highly dispersed CuO to metallic Cu, the stability of metallic Cu and a larger concentration Ce³? in CeO? (ns).

  20. Pulse studies to decipher the role of surface morphology in CuO/CeO? nanocatalysts for the water gas shift reaction

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

    Rodriguez, Jose A.; Zhao, Fuzhen; Liu, Zongyuan; Xu, Wenqian; Yao, Siyu; Si, Rui; Johnston-Peck, Aaron C.; Martinez-Arias, Arturo; Hanson, Jonathan C.; Senanayake, Sanjaya D.

    2015-03-01T23:59:59.000Z

    The water-gas shift reaction (WGS, CO + H?O ? CO?) was studied over CuO/CeO? catalysts with two different ceria particle morphohologies, in the form of nanospheres (ns) and nanocubes (nc). To understand the strong dependence of the WGS reaction activity on the ceria nanoshapes, pulses of CO (without and with water vapor) were employed during in situ X-ray diffraction (XRD) and X-ray absoprtion near edge structure (XANES) measurements done to characterize the catalysts. The results showed that CuO/CeO? (ns) exhibited a substantially better activity than CuO/CeO? (nc). The higher activity was associated with the unique properties of CuO/CeO? (ns), suchmore »as the easier reduction of highly dispersed CuO to metallic Cu, the stability of metallic Cu and a larger concentration Ce³? in CeO? (ns).« less

  1. PSD Methods Comparison and Discrimination Efficiency Study for LaBr3:Ce Detector

    E-Print Network [OSTI]

    Jirong Cang; Ming Zeng; Zhi Zeng; Jianping Cheng; Yinong Liu; Junli Li

    2015-04-21T23:59:59.000Z

    LaBr3:Ce scintillator has been widely studied for nuclear spectroscopy because of its optimal energy resolution (CCM, the correlation between the CCM feature value distribution and the total charge (energy) was quantitatively analyzed, and a fitting equation of the correlation is inferred and verified with experiment. With the equation, an energy-dependent threshold was chosen to optimize the discrimination efficiency. Therefore, it can be expected that a correction of the alpha and gamma PSD spectrum would also be done with the equation, to achieve more accurate result.

  2. Facile creation of bio-inspired superhydrophobic Ce-based metallic glass surfaces

    SciTech Connect (OSTI)

    Liu Kesong; Li Zhou [Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing 100191 (China); Wang Weihua [Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); Jiang Lei [Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing 100191 (China); Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)

    2011-12-26T23:59:59.000Z

    A bio-inspired synthesis strategy was conducted to fabricate superhydrophobic Ce-based bulk metallic glass (BMG) surfaces with self-cleaning properties. Micro-nanoscale hierarchical structures were first constructed on BMG surfaces and then modified with the low surface energy coating. Surface structures, surface chemical compositions, and wettability were characterized by combining scanning electron microscopy, atomic force microscopy, x-ray photoelectron spectroscopy, and contact angle measurements. Research indicated that both surface multiscale structures and the low surface free energy coating result in the final formation of superhydrophobicity.

  3. XRD, lead equivalent and UV-VIS properties study of Ce and Pr lead silicate glasses

    SciTech Connect (OSTI)

    Alias, Nor Hayati, E-mail: norhayati@nuclearmalaysia.gov.my; Abdullah, Wan Shafie Wan, E-mail: norhayati@nuclearmalaysia.gov.my; Isa, Norriza Mohd, E-mail: norhayati@nuclearmalaysia.gov.my; Isa, Muhammad Jamal Md, E-mail: norhayati@nuclearmalaysia.gov.my; Zali, Nurazila Mat; Abdullah, Nuhaslinda Ee [Malaysian Nuclear Agency, 43000, Bangi, Kajang, Selangor (Malaysia); Muhammad, Azali [Malaysian Society for Non-Destructive Testing (Malaysia)

    2014-02-12T23:59:59.000Z

    In this work, Cerium (Ce) and Praseodymium (Pr) containing lead silicate glasses were produced with 2 different molar ratios low (0.2 wt%) and high (0.4wt%). These types of glasses can satisfy the characteristics required for radiation shielding glasses and minimize the lead composition in glass. The radiation shielding properties of the synthesized glasses is explained in the form of lead equivalent study. The XRD diffraction and UV-VIS analysis were performed to observe the structural changes of the synthesis glasses at 1.5 Gy gamma radiation exposures.

  4. Nanostructured LaF{sub 3}:Ce Quantum Dot Nuclear Radiation Detector

    SciTech Connect (OSTI)

    Guss, P., Guise, R., Reed, M., Mukhopadhyay, S., Yuan, D.

    2010-11-01T23:59:59.000Z

    Many radioactive isotopes have low energy X-rays and high energy gamma rays of interest for detection. The goal of the work presented was to demonstrate the possibility of measuring both low-energy X-rays and relatively high-energy gamma rays simultaneously using the nano-structured lanthanum bromide, lanthanum fluoride, or cerium bromide. The key accomplishments of the project was the building and acquisition of the LaF3:Ce nanocomposite detectors. Nanocomposite detectors are sensitive to {gamma}’s as well as n’s and X-rays.

  5. Nickel deficiency in RENi2-xP2 (RE=La, Ce, Pr). Combined crystallographic and physical property studies

    SciTech Connect (OSTI)

    Bauer, Eric D [Los Alamos National Laboratory; Ronning, Filip [Los Alamos National Laboratory; Thompson, Joe D [Los Alamos National Laboratory; Sarrao, John L [Los Alamos National Laboratory; Bobev, S [U. OF DE; Xia, S [U. OF DE

    2008-01-01T23:59:59.000Z

    Large single crystals from RENi{sub 2-x}P{sub 2} (RE = La, Ce, Pr) were synthesized from the pure elements using Sn as a metal flux, and their structures were established by X-ray crystallography. The title compounds were confirmed to crystallize in the body-centered tetragonal ThCr{sub 2}Si{sub 2} structure type (space group I4/mmm (No. 139); Pearson's symbol tI10), but with a significant stoichiometry breadth with respect to the transition metal. Systematic synthetic work, coupled with accurate structure refinements indicated strong correlation between the degree of Ni-deficiency and the reaction conditions. For four different PrNi{sub 2-x}P{sub 2} (x {le} 0.5) samples, temperature dependent dc magnetization measurements indicated typical local moment 4f-magnetism and a stable Pr{sup 3+} ground state. Field-dependent heat capacity data confirmed a ferromagnetic order at low temperature, and the variations of T{sub c} with the concentration of Ni defects are discussed. LaNi{sub 2-x}P{sub 2}, as expected was found to be Pauli-like paramagnetic in the studied temperature regime, while the Ce-analog CeNi{sub 2-x}P{sub 2} (x = 0.28(1)) showed the characteristics of a mixed valent Ce{sup 3+}/Ce{sup 4+} system with a possible Kondo temperature on the order of 230 K.

  6. Grant Title: RESEARCH GRANTS FOR PREVENTING VIOLENCE AND VIOLENCE-RELATED INJURY Funding Opportunity Number: RFA-CE-14-006. CFDA Number(s): 93.136.

    E-Print Network [OSTI]

    Farritor, Shane

    Opportunity Number: RFA-CE-14-006. CFDA Number(s): 93.136. Agency/Department: Centers for Disease Control

  7. Electronic structure of the heavy-fermion caged compound Ce?Pd??X? (X = Si, Ge) studied by density functional theory and photoelectron spectroscopy

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

    Yamaoka, Hitoshi; Jarrige, Ignace; Schwier, Eike F.; Arita, Masashi; Shimada, Kenya; Tsujii, Naohito; Jiang, Jian; Hayashi, Hirokazu; Iwasawa, Hideaki; Namatame, Hirofumi; et al

    2015-03-01T23:59:59.000Z

    The electronic structure of Ce?Pd??X? (X = Si, Ge) has been studied using detailed density functional theory (DFT) calculations and high-resolution photoelectron spectroscopy (PES) measurements. The orbital decomposition of the electronic structure by DFT calculations indicates that Ce atoms at the (8c) site surrounded by 16 Pd atoms have a more localized nature and a tendency to be magnetic. Ce atoms in the (4a) site surrounded by 12 Pd and 6 X atoms, on the other, show only a negligible magnetic moment. In the photoemission valence-band spectra we observe a strong f? (Ce??) component with a small fraction of f¹more »(Ce³?) component. The spectral weight of f¹ component near the Fermi level Ce?Pd??Si? is stronger than that for Ce?Pd??Ge? at the 4d-4f resonance, suggesting stronger c-f hybridization in the former. This may hint to the origin of the large electronic specific coefficient of Ce?Pd??Si? compared to Ce?Pd??Ge?.« less

  8. Bias-Variance Techniques for Monte Carlo Optimization: Cross-validation for the CE Method

    E-Print Network [OSTI]

    Rajnarayan, Dev

    2008-01-01T23:59:59.000Z

    In this paper, we examine the CE method in the broad context of Monte Carlo Optimization (MCO) and Parametric Learning (PL), a type of machine learning. A well-known overarching principle used to improve the performance of many PL algorithms is the bias-variance tradeoff. This tradeoff has been used to improve PL algorithms ranging from Monte Carlo estimation of integrals, to linear estimation, to general statistical estimation. Moreover, as described by, MCO is very closely related to PL. Owing to this similarity, the bias-variance tradeoff affects MCO performance, just as it does PL performance. In this article, we exploit the bias-variance tradeoff to enhance the performance of MCO algorithms. We use the technique of cross-validation, a technique based on the bias-variance tradeoff, to significantly improve the performance of the Cross Entropy (CE) method, which is an MCO algorithm. In previous work we have confirmed that other PL techniques improve the perfomance of other MCO algorithms. We conclude that ...

  9. On the local electronic and atomic structure of Ce{sub 1?x}Pr{sub x}O{sub 2??} epitaxial films on Si

    SciTech Connect (OSTI)

    Niu, Gang, E-mail: gang@ihp-microelectronics.com; Schubert, Markus Andreas; Zoellner, Marvin Hartwig [IHP, Im Technologiepark 25, 15236 Frankfurt (Oder) (Germany); D'Acapito, Francesco [Consiglio Nazionale delle Ricerche, Istituto Officina dei Materiali, Operative Group in Grenoble, c/o European Synchrotron Radiation Facility, B.P. 220, 38043 Grenoble (France); Schroeder, Thomas [IHP, Im Technologiepark 25, 15236 Frankfurt (Oder) (Germany); BTU Cottbus-Senftenberg, Konrad-Zuse-Str. 1, 03046 Cottbus (Germany); Boscherini, Federico [Consiglio Nazionale delle Ricerche, Istituto Officina dei Materiali, Operative Group in Grenoble, c/o European Synchrotron Radiation Facility, B.P. 220, 38043 Grenoble (France); Department of Physics and Astronomy, University of Bologna, via le C. Berti Pichat 6/2, 40127 Bologna (Italy)

    2014-09-28T23:59:59.000Z

    The local electronic and atomic structure of (111)-oriented, single crystalline mixed Ce{sub 1?x}Pr{sub x}O{sub 2??} (x?=?0, 0.1 and 0.6) epitaxial thin films on silicon substrates have been investigated in view of engineering redox properties of complex oxide films. Non-destructive X-ray absorption near edge structure reveals that Pr shows only +3 valence and Ce shows only nominal +4 valence in mixed oxides. Extended x-ray absorption fine structure (EXAFS) studies were performed at K edges of Ce and Pr using a specially designed monochromator system for high energy measurements. They demonstrate that the fluorite lattice of ceria (CeO{sub 2}) is almost not perturbed for x?=?0.1 sample, while higher Pr concentration (x?=?0.6) not only generates a higher disorder level (thus more disordered oxygen) but also causes a significant reduction of Ce–O interatomic distances. The valence states of the cations were also examined by techniques operating in highly reducing environments: scanning transmission electron microscopy-electron energy loss spectroscopy and X-ray photoemission spectroscopy; in these reducing environments, evidence for the presence of Ce{sup 3+} was clearly found for the higher Pr concentration. Thus, the introduction of Pr{sup 3+} into CeO{sub 2} strongly enhances the oxygen exchange properties of CeO{sub 2}. This improved oxygen mobility properties of CeO{sub 2} are attributed to the lattice disorder induced by Pr mixing in the CeO{sub 2} fluorite lattice, as demonstrated by EXAFS measurements. Thus, a comprehensive picture of the modifications of the atomic and electronic structure of Ce{sub 1?x}Pr{sub x}O{sub 2??} epitaxial films and their relation is obtained.

  10. Comparison of LaBr3:Ce and NaI(Tl) Scintillators for Radio-Isotope Identification Devices

    SciTech Connect (OSTI)

    Milbrath, Brian D.; Choate, Bethany J.; Fast, Jim E.; Hensley, Walter K.; Kouzes, Richard T.; Schweppe, John E.

    2006-07-31T23:59:59.000Z

    Lanthanum halide (LaBr3:Ce) scintillators offer significantly better resolution (<3 percent at 662 kilo-electron volt [keV]) relative to sodium iodide (NaI(Tl)) and have recently become commercially available in sizes large enough for the hand-held radio-isotope identification device (RIID) market. There are drawbacks to lanthanum halide detectors, however. These include internal radioactivity that contributes to spectral counts and a low-energy response that can cause detector resolution to be lower than that of NaI(Tl) below 100 keV. To study the potential of this new material for RIIDs, we performed a series of measurements comparing a 1.5?1.5 inch LaBr?3:Ce detector with an Exploranium GR 135 RIID, which contains a 1.5-2.2 inch NaI(Tl) detector. Measurements were taken for short time frames, as typifies RIID usage. Measurements included examples of naturally occurring radioactive material (NORM), typically found in cargo, and special nuclear materials. Some measurements were noncontact, involving short distances or cargo shielding scenarios. To facilitate direct comparison, spectra from the different detectors were analyzed with the same isotope identification software (ORTEC ScintiVision TM). In general, the LaBr3:Ce detector was able to find more peaks and find them faster than the NaI(Tl) detector. To the same level of significance, the LaBr3:Ce detector was usually two to three times faster. The notable exception was for 40K containing NORM where interfering internal contamination in the LaBr3:Ce detector exist. NaI(Tl) consistently outperformed LaBr3:Ce for this important isotope. LaBr3:Ce currently costs much more than NaI(Tl), though this cost-difference is expected to diminish (but not completely) with time. As is true of all detectors, LaBr3:Ce will need to be gain-stabilized for RIID applications. This could possibly be done using the internal contaminants themselves. It is the experience of the authors that peak finding software in RIIDs needs to be improved, regardless of the detector material.

  11. The effect of Au and Ni doping on the heavy fermion state of the Kondo lattice antiferromagnet CePtZn

    SciTech Connect (OSTI)

    Dhar, S. K., E-mail: sudesh@tifr.res.in [DCMPMS, T.I.F.R., Homi Bhabha Road, Colaba, Mumbai 400005 (India); Aoki, Y.; Suemitsu, B.; Miyazaki, R. [Department of Physics, Tokyo Metropolitan University, Minami-Ohsawa 1-1, Hachioji-Shi, Tokyo (Japan); Provino, A.; Manfrinetti, P. [Departimento Physica Chemicale, Universita di Genova, Via Dodecaneso, 16146 Genova (Italy)

    2014-05-07T23:59:59.000Z

    We have probed the effect of doping CePtZn with Au and Ni and also investigated in detail the magnetic behavior of the iso-structural CeAuZn. A magnetic ground state is observed in both CePt{sub 0.9}Au{sub 0.1}Zn and CePt{sub 0.9}Ni{sub 0.1}Zn with T{sub N}?=?2.1 and 1.1?K and the coefficient of the linear term of electronic heat capacity ??=?0.34 and 0.9?J/mol K{sup 2}, respectively. The corresponding values for CePtZn are 1.7?K and 0.6?J/mol K{sup 2}. The altered values of T{sub N} and ? show that the electronic correlations in CePtZn are affected by doping with Au and Ni. CeAuZn orders magnetically near 1.7?K and its electrical resistivity shows a normal metallic behavior. Together with a ? of 0.022?J/mol K{sup 2} the data indicate a weak 4f-conduction electron hybridization in CeAuZn characteristic of normal trivalent cerium based systems.

  12. Influence of hydrogenation on the structural and magnetic properties of compounds based on cerium and crystallizing in the tetragonal CeFeSi-type

    E-Print Network [OSTI]

    Boyer, Edmond

    investigated. Neutron powder diffraction performed on deuteride CeCoGeD indicates that D-atoms are insertedCoGeH, neutron powder diffraction on the equivalent deuteride have been performed. The aim of this paper pressure changes in a calibrated volume. The deuteride CeCoGeD was obtained in the same conditions using

  13. Synthesis and thermoelectric properties of Ce(Ru0.67Rh0.33)4Sb12. Geoff D. Staneff1

    E-Print Network [OSTI]

    Asimow, Paul D.

    Synthesis and thermoelectric properties of Ce(Ru0.67Rh0.33)4Sb12. Geoff D. Staneff1 , Paul D compositions show promise for thermoelectric applications. Current work was undertaken with a nominal composition of Ce(Ru0.67Rh0.33)4Sb12 to experimentally verify its potential as an n-type thermoelectric

  14. 1,2-CF bond activation of perfluoroarenes and alkylidene isomers of titanium. DFT analysis of the CeF bond activation pathway and rotation of the titanium

    E-Print Network [OSTI]

    Baik, Mu-Hyun

    1,2-CF bond activation of perfluoroarenes and alkylidene isomers of titanium. DFT analysis of the CeF bond activation pathway and rotation of the titanium alkylidene moiety José G. Andino, Hongjun Received in revised form 26 July 2011 Accepted 27 July 2011 Keywords: Alkylidene Titanium CeF bond

  15. Thermal and magnetic properties of La-doped Ce1-yLayGe1.80 with 0

    E-Print Network [OSTI]

    Li, Jing

    Thermal and magnetic properties of La-doped Ce1-yLayGe1.80 with 0 Department of Physics, Temple University, Philadelphia, Pennsylvania 19122 J. A. Zan Jet Propulsion 2006 CeGex with 1.71 x 2.0 crystallizes in an orthorhombic structure and exhibits two magnetic

  16. Vortex Lattice Studies in CeCoIn? with H?c

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

    Das, P.; White, J. S.; Holmes, A. T.; Gerber, S.; Forgan, E. M.; Bianchi, A. D.; Kenzelmann, M.; Zolliker, M.; Gavilano, J. L.; Bauer, E. D.; Sarrao, J. L.; Petrovic, C.; Eskildsen, M. R.

    2012-02-01T23:59:59.000Z

    We present small angle neutron scattering studies of the vortex lattice (VL) in CeCoIn? with magnetic fields applied parallel (H) to the antinodal [100] and nodal [110] directions. For H II 100], a single VL orientation is observed, while a 90° reorientation transition is found for H II [110]. For both field orientations and VL configurations we find a distorted hexagonal VL with an anisotropy, ?=2.0±0.05. The VL form factor shows strong Pauli paramagnetic effects similar to what have previously been reported for H II [001]. At high fields, above which the upper critical field (Hc2) becomes a first-order transition, an increased disordering of the VL is observed.

  17. Effect of aging upon CE and B and W control rod drives

    SciTech Connect (OSTI)

    Grove, E.; Gunther, W.

    1992-01-01T23:59:59.000Z

    The effect of aging upon the Babcock Wilcox (B W) and Combustion Engineering (CE) Control Rod Drive (CRD) systems has been evaluated as part of the US NRC Nuclear Plant Aging Research (NPAR) program. Operating experience data for the 1980--1990 time period was reviewed to identify predominant failure modes, causes, and effects. These results, in conjunction with an assessment of component materials and operating environment, conclude that both systems are susceptible to age degradation. System failures have resulted in significant plant effects, including power reductions, plant shutdowns, scrams, and Engineered Safety Feature (ESF) actuation. Current industry inspection and maintenance practices were assessed. Some of these practices effectively address aging, while others do not.

  18. Effect of aging upon CE and B and W control rod drives

    SciTech Connect (OSTI)

    Grove, E.; Gunther, W.

    1992-05-01T23:59:59.000Z

    The effect of aging upon the Babcock & Wilcox (B&W) and Combustion Engineering (CE) Control Rod Drive (CRD) systems has been evaluated as part of the US NRC Nuclear Plant Aging Research (NPAR) program. Operating experience data for the 1980--1990 time period was reviewed to identify predominant failure modes, causes, and effects. These results, in conjunction with an assessment of component materials and operating environment, conclude that both systems are susceptible to age degradation. System failures have resulted in significant plant effects, including power reductions, plant shutdowns, scrams, and Engineered Safety Feature (ESF) actuation. Current industry inspection and maintenance practices were assessed. Some of these practices effectively address aging, while others do not.

  19. Theoretical studies of Ir5Th and Ir5Ce nanoscale precipitates in Ir

    SciTech Connect (OSTI)

    Morris, James R [ORNL] [ORNL; Averill, Frank [ORNL] [ORNL; Cooper, Valentino R [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    Experimentally, it is known that very small amounts of thorium and/or cerium added to iridium metal form a precipitate, Ir5Th / Ir5Ce, which improves the high temperature mechanical properties of the resulting alloys. We demonstrate that there are low-energy configurations for nano-scale precipitates of these phases in Ir, and that these coherent arrangements may assist in producing improved mechanical properties. One precipitate/matrix orientation gives a particularly low interfacial energy, and a low lattice misfit. Nanolayer precipitates with this orientation are found to be likely to form, with little driving force to coarsen. The predicted morphology of the precipitates and their orientation with the matrix phase provide a potential experiment that could be used to test these predictions.

  20. Vortex Lattice Studies in CeCoIn? with H?c

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

    Das, P.; White, J. S.; Holmes, A. T.; Gerber, S.; Forgan, E. M.; Bianchi, A. D.; Kenzelmann, M.; Zolliker, M.; Gavilano, J. L.; Bauer, E. D.; et al

    2012-02-01T23:59:59.000Z

    We present small angle neutron scattering studies of the vortex lattice (VL) in CeCoIn? with magnetic fields applied parallel (H) to the antinodal [100] and nodal [110] directions. For H II 100], a single VL orientation is observed, while a 90° reorientation transition is found for H II [110]. For both field orientations and VL configurations we find a distorted hexagonal VL with an anisotropy, ?=2.0±0.05. The VL form factor shows strong Pauli paramagnetic effects similar to what have previously been reported for H II [001]. At high fields, above which the upper critical field (Hc2) becomes a first-order transition,more »an increased disordering of the VL is observed.« less

  1. UCL SChooL of Life and MediCaL SCienCeS Creating knowledge, achieving impact

    E-Print Network [OSTI]

    Saunders, Mark

    UCL SChooL of Life and MediCaL SCienCeS Creating knowledge, achieving impact Population Health 4 #12;PREFACE UCL's School of Life and Medical Sciences encompasses arguably the greatest concentration Assessment Exercise was outstanding, and for most key measures the School comfortably tops UK league tables

  2. Pour citer ce document : CHELKOFF, Grgoire. For an ecological approach to architecture : perception and design. First International Workshop

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Pour citer ce document : CHELKOFF, Grégoire. For an ecological approach to architecture : perception and design. First International Workshop : Architectural and urban Ambient Environment, Nantes, 6-7-8 Février 2002. Nantes: CERMA, Ecole D'architecture de Nantes, 2002, 11p. For an ecological approach

  3. Novel CeO2-based Screen-Printed Potentiometric Electrodes for pH monitoring S. Betelu1*

    E-Print Network [OSTI]

    Boyer, Edmond

    in Europe to isolate and store radioactive waste. In France, the Callovo-Oxfordian formation (COx) is a possible candidate for nuclear waste storage. This work investigates the applicability of CeO2-based oxides or are anticipated in the COx formation during its evolution as radioactive waste repository due mainly

  4. Synthesis, Structures, and Magnetic Properties of Rare-Earth Cobalt Arsenides, RCo2As2 (R = La, Ce, Pr, Nd)

    SciTech Connect (OSTI)

    Thompson, Corey [Florida State University, Tallahassee] [Florida State University, Tallahassee; Tan, Xiaoyan [Florida State University, Tallahassee] [Florida State University, Tallahassee; Kovnir, Kirill [Florida State University, Tallahassee] [Florida State University, Tallahassee; Garlea, Vasile O [ORNL] [ORNL; Shatruk, Michael [Florida State University, Tallahassee] [Florida State University, Tallahassee

    2014-01-01T23:59:59.000Z

    Four rare-earth cobalt arsenides, RCo2As2 (R = La, Ce, Pr, Nd), were obtained by reactions of constituent elements in molten Bi. The use of Bi flux also allowed the growth of representative single crystals. All compounds are isostructural and belong to the ThCr2Si2 structure type (space group I4/mmm). The formation of Co vacancies is observed in all structures, while the structures of La- and Ce-containing compounds also show incorporation of minor Bi defects next to the R crystallographic site. Correspondingly, the general formula of these materials can be written as R1 xBixCo2 As2, with x/ = 0.03/0.1, 0.05/0.15, 0/0.2, and 0/0.3 for R = La, Ce, Pr, and Nd, respectively. All compounds exhibit high-temperature ferromagnetic ordering of Co magnetic moments in the range of 150-200 K. Electronic band structure calculations revealed a high peak in the density of states at the Fermi level, thus supporting the itinerant nature of magnetism in the Co sublattice. The magnetic ordering in the lanthanide sublattice takes place at lower temperatures, with the R moments aligning antiparallel to the Co moments to give a ferrimagnetic ground state. The measurements on oriented single crystals demonstrated significant magnetic anisotropy in the ferrimagnetic state, with the preferred moment alignment along the c axis of the tetragonal lattice. Neutron powder diffraction failed to reveal the structure of magnetically ordered states, but confirmed the presence of Co vacancies. X-ray absorption near-edge structure spectroscopy on Ce1.95Bi0.05Co1.85As2 showed the average oxidation state of Ce to be +3.06. Solid state NMR spectroscopy revealed a substantially reduced hyperfine field on the Co atoms in the vicinity of Bi defects.

  5. Ion-Beam-Induced Chemical Mixing at a Nanocrystalline CeO2–Si Interface

    SciTech Connect (OSTI)

    Edmondson, P. D.; Young, Niel P.; Parish, Chad M.; Moll, Sandra J.; Namavar, Fereydoon; Weber, William J.; Zhang, Yanwen

    2013-02-28T23:59:59.000Z

    Thin films of nanocrystalline ceria deposited onto a silicon substrate have been irradiated with 3 MeV Au+ ions to a total dose of 34 displacements per atom to examine the film/substrate interfacial response upon displacement damage. Under irradiation, a band of contrast is observed to form that grows under further irradiation. Scanning and high-resolution transmission electron microscopy imaging and analysis suggest that this band of contrast is a cerium silicate phase with an approximate Ce:Si:O composition ratio of 1:1:3 in an amorphous nature. The slightly nonstoichiometric composition arises due to the loss of mobile oxygen within the cerium silicate phase under the current irradiation condition. This nonequilibrium phase is formed as a direct result of ion-beam-induced chemical mixing caused by ballistic collisions between the incoming ion and the lattice atoms. This may hold promise in ion beam engineering of cerium silicates for microelectronic applications e.g., the fabrication of blue LEDs.

  6. Ion-Beam-Induced Chemical Mixing at a Nanocrystalline CeO2 Si Interface

    SciTech Connect (OSTI)

    Edmondson, Dr. Philip [University of Oxford; Young, Neil P. [Department of Materials, University of Oxford, Parks Rd, Oxford, OX1 3PH, UK; Parish, Chad M [ORNL; Moll, Sandra [CEA, Saclay, France; Namavar, Fereydoon [University of Nebraska Medical Center; Weber, William J [ORNL; Zhang, Yanwen [ORNL

    2013-01-01T23:59:59.000Z

    Thin films of nanocrystalline ceria deposited onto a silicon substrate have been irradiated with 3 MeV Au+ ions to a total dose of 34 displacements per atom to examine the film/substrate interfacial response upon displacement damage. Under irradiation, a band of contrast is observed to form that grows under further irradiation. Scanning and high-resolution transmission electron microscopy imaging and analysis suggest that this band of contrast is a cerium silicate phase with an approximate Ce:Si:O composition ratio of 1:1:3 in an amorphous nature. The slightly nonstoichiometric composition arises due to the loss of mobile oxygen within the cerium silicate phase under the current irradiation condition. This nonequilibrium phase is formed as a direct result of ion-beam-induced chemical mixing caused by ballistic collisions between the incoming ion and the lattice atoms. This may hold promise in ion beam engineering of cerium silicates for microelectronic applications e.g., the fabrication of blue LEDs.

  7. Q-dependence of the spin fluctuations in the intermediate valence compound CePd3

    SciTech Connect (OSTI)

    Fanelli, V. R.; Lawrence, J. M.; Goremychkin, E. A.; Osborn, R.; Bauer, E. D.; McClellan, K. J.; Thompson, J. D.; Booth, C. H.; Christianson, A. D.; Riseborough, P. S.

    2014-06-25T23:59:59.000Z

    We report inelastic neutron scattering experiments on a single crystal of the intermediate valence compound CePd3. At 300 K the magnetic scattering is quasielastic, with half-width G = 23 meV, and is independent of momentum transfer Q. At low temperature, the Q-averaged magnetic spectrum is inelastic, exhibiting a broad peak centered near E-max = 55 meV. These results, together with the temperature dependence of the susceptibility, 4f occupation number, and specific heat, can be fit by the Kondo/Anderson impurity model. The low temperature scattering near Emax, however, shows significant variations with Q, reflecting the coherence of the 4f lattice. The intensity is maximal at (1/2, 1/2, 0), intermediate at (1/2, 0, 0) and (0, 0, 0), and weak at (1/2, 1/2, 1/2). We discuss this Q-dependence in terms of current ideas about coherence in heavy fermion systems.

  8. A Qualitative Interpretation of the Second Solar Spectrum of Ce ll

    E-Print Network [OSTI]

    R. Manso Sainz; E. Landi Degl'Innocenti; J. Trujillo Bueno

    2005-10-31T23:59:59.000Z

    This is a theoretical investigation on the formation of the linearly polarized line spectrum of ionized cerium in the sun. We calculate the scattering line polarization pattern emergent from a plane-parallel layer of Ce {\\sc ii} atoms illuminated from below by the photospheric radiation field, taking into account the differential pumping induced in the various magnetic sublevels by the anisotropic radiation field. We find that the line polarization pattern calculated with this simple model is in good qualitative agreement with reported observations. Interestingly, the agreement improves when some amount of atomic level depolarization is considered. We find that the best fit to the observations corresponds to the situation where the ground and metastable levels are depolarized to about one fifth of the corresponding value obtained in the absence of any depolarizing mechanism. One possibility to have this situation is that the depolarizing rate value of elastic collisions is exactly $D=10^6{\\rm s}^{-1}$, which is rather unlikely. Therefore, we interpret that fact as} due to the presence of a turbulent magnetic field in the limit of saturated Hanle effect for the lower-levels. For this turbulent magnetic field we obtain a lower limit of 0.8 gauss and an upper limit of 200-300 gauss.

  9. Fuel Etanol from Cellulosic Biomass LEE R. LYND, JANET H. CusHmAN, ROBERTA J. NICHOLS, CHARLES E. WYMAN

    E-Print Network [OSTI]

    California at Riverside, University of

    in the United States, petroleum supplies the largest share of total energy used and has the highest fraction, global climate change, bal- ance oftrade, and energy security. Energy balance, feed- stock supply corn and other starch- rich grains in the United States, ethanol also can be made from cellulosic

  10. Superconducting epitaxial thin films of CeNi{sub x}Bi{sub 2} with a bismuth square net structure

    SciTech Connect (OSTI)

    Buckow, Alexander; Kupka, Katharina; Retzlaff, Reiner; Kurian, Jose; Alff, Lambert [Institute of Materials Science, Technische Universitaet Darmstadt, 64287 Darmstadt (Germany)

    2012-10-15T23:59:59.000Z

    We have grown highly epitaxial and phase pure thin films of the arsenic-free pnictide compound CeNi{sub x}Bi{sub 2} on (100) MgO substrates by reactive molecular beam epitaxy (RMBE). X-ray diffraction and reflection high-energy electron diffraction of the films confirm the ZrCuSiAs structure with a Bi square net layer. Superconductivity was observed in magnetization and resistivity measurements for x= 0.75 to 0.93 in these CeNi{sub x}Bi{sub 2} thin films with the highest critical temperature of 4.05 K and a resistive transition width of 0.1 K for x= 0.86. Our results indicate that thin film deposition by RMBE provides a tool to synthesize high-quality pnictide superconductors of the novel 112 type.

  11. ME 227 CE 212 MATH 223 GE 210 CMPT 116 ABE 211CHE 210 GE 213# MATH 224

    E-Print Network [OSTI]

    Saskatchewan, University of

    GE 120 ME 227 CE 212 MATH 223 GE 210 CMPT 116 ABE 211CHE 210 GE 213# MATH 224 ABE 295 ABE 212Elective* Elective* AB E 311 ABE 313 ABE 312 GE 348#ABE 323 co-requisite ABE 327 HSS#@ HSS#@ ABE 324 GE 300# ABE 395 4TH YEAR ABE Elec* ABE Elec* ABE Elec*ABE 422 GE 449# Ag Elec* T.E.* T.E.* ABE Elec* Ag Elec

  12. Processing and Properties of Bulk Y?Ba?Cu?O Superconductors Fabricated by Top Seeded Melt Growth from Precursor Pellets Containing a Graded CeO2 Composition

    E-Print Network [OSTI]

    Zhai, Wei; Shi, Yunhua; Durrell, John H.; Dennis, Anthony R.; Zhang, Zhiwei; Cardwell, David A.

    2015-01-08T23:59:59.000Z

    be effective in improving the applied magnetic properties of these technologically important materials. Single grain, bulk YBCO superconductors fabricated from precursor pellets containing a graded CeO2 composition have been prepared corresponding to a...

  13. Anomalous Chemical Expansion Behavior of Pr[subscript 0.2]Ce[subscript 0.8]O[subscript 2-?] Thin Films Grown by Pulsed Laser Deposition

    E-Print Network [OSTI]

    Kuru, Y.

    The chemomechanical and electrical properties of (Pr,Ce)O[subscript 2-?] thin films were studied between 30 and 875°C in air by in situ X-ray diffraction and complex impedance spectroscopy measurements. Reduction/oxidation ...

  14. In situ spectroscopic detection of SMSI effect in a Ni/CeO2 system: hydrogen-induced burial and dig out of metallic nickel

    E-Print Network [OSTI]

    Caballero, Alfonso

    2011-01-01T23:59:59.000Z

    and dig out of metallic nickel Alfonso Caballero,* a Juan P.on a CeO 2 thin film. The nickel particles of about 10–15 nm1 shows SEM images of the nickel particles before (top) and

  15. JOURNAL DE PHYSIQUE Colloque C6, supplkment au no8, Tome 39, aotit 1978, page C6-781 PARAMAGNETIC SUSCEPTIBILITY OF UPt AND CePt

    E-Print Network [OSTI]

    Boyer, Edmond

    . While U and Ce both even superconduct in elemental form (under pressure) ; they can, too, support in an inert atmosphere. The UPt data were taken in a superconducting susceptometer with a measuring field

  16. Structural characterization of the CeO{sub 2}/Gd{sub 2}O{sub 3} mixed system by synchrotron X-ray diffraction

    SciTech Connect (OSTI)

    Artini, Cristina, E-mail: c.artini@ge.ieni.cnr.it [Dipartimento di Chimica e Chimica Industriale, Universita degli Studi di Genova, Via Dodecaneso 31, 16146 Genova (Italy); Costa, Giorgio A., E-mail: costa@chimica.unige.it [Dipartimento di Chimica e Chimica Industriale, Universita degli Studi di Genova, Via Dodecaneso 31, 16146 Genova (Italy); CNR-SPIN Genova, Corso Perrone 24, 16152 Genova (Italy); Pani, Marcella, E-mail: marcella@chimica.unige.it [Dipartimento di Chimica e Chimica Industriale, Universita degli Studi di Genova, Via Dodecaneso 31, 16146 Genova (Italy); Lausi, Andrea, E-mail: andrea.lausi@elettra.trieste.it [Sincrotrone Trieste S.C.p.A., ss 14, km 163, 5, 34149 Basovizza, Trieste (Italy); Plaisier, Jasper, E-mail: jasper.plaisier@elettra.trieste.it [Sincrotrone Trieste S.C.p.A., ss 14, km 163, 5, 34149 Basovizza, Trieste (Italy)

    2012-06-15T23:59:59.000Z

    The structural determination of the CeO{sub 2}/Gd{sub 2}O{sub 3} mixed system is a non-trivial problem because of the close resemblance between the ionic sizes of Ce{sup 4+} and Gd{sup 3+} and between the crystal structures of CeO{sub 2} and Gd{sub 2}O{sub 3}. (Ce{sub 1-x}Gd{sub x})O{sub 2-x/2} powder samples with x ranging between 0 and 1 have been synthesized by coprecipitation of mixed oxalates and subsequent thermal decomposition in air at 1200 Degree-Sign C followed by slow cooling. Synchrotron powder X-ray diffraction data were collected and refined by the Rietveld method. Lattice parameters do not follow Vegard's law and no peak splitting has been observed for any composition, meaning that no biphasic regions exist over the whole compositional range. The same hybrid structural model - a proper mixture of the structures of the two pure oxides - was used for the refinements, allowing to account for the data observed. - graphical abstract: Substituting Ce{sup 4+} by Gd{sup 3+}, a gradual transition from the F structure (typical of CeO{sub 2}) to the C structure (typical of Gd{sub 2}O{sub 3}) takes place. The lattice parameters do not follow Vegard's law. Highlights: Black-Right-Pointing-Pointer A structural study of Ce-Gd mixed oxides has been performed. Black-Right-Pointing-Pointer In (Ce{sub 1-x}Gd{sub x})O{sub 2-x/2} a solid solution forms for 0{<=}x{<=}0.3. Black-Right-Pointing-Pointer For x>0.3 a gradual transition from the C to the F structure is observed. Black-Right-Pointing-Pointer Lattice parameters do not follow Vegard's law.

  17. Methanol conversion to light olefins over nanostructured CeAPSO-34 catalyst: Thermodynamic analysis of overall reactions and effect of template type on catalytic properties and performance

    SciTech Connect (OSTI)

    Aghamohammadi, Sogand [Chemical Engineering Faculty, Sahand University of Technology, P.O. Box 51335-1996, Sahand New Town, Tabriz (Iran, Islamic Republic of); Reactor and Catalysis Research Center (RCRC), Sahand University of Technology, P.O. Box 51335-1996, Sahand New Town, Tabriz (Iran, Islamic Republic of); Haghighi, Mohammad, E-mail: haghighi@sut.ac.ir [Chemical Engineering Faculty, Sahand University of Technology, P.O. Box 51335-1996, Sahand New Town, Tabriz (Iran, Islamic Republic of); Reactor and Catalysis Research Center (RCRC), Sahand University of Technology, P.O. Box 51335-1996, Sahand New Town, Tabriz (Iran, Islamic Republic of); Charghand, Mojtaba [Chemical Engineering Faculty, Sahand University of Technology, P.O. Box 51335-1996, Sahand New Town, Tabriz (Iran, Islamic Republic of); Reactor and Catalysis Research Center (RCRC), Sahand University of Technology, P.O. Box 51335-1996, Sahand New Town, Tabriz (Iran, Islamic Republic of)

    2014-02-01T23:59:59.000Z

    Graphical abstract: In this research nanostructured CeAPSO-34 was synthesized to explore the effect of TEAOH and morpholine on its physiochemical properties and MTO performance. Prepared catalysts were characterized with XRD, FESEM, BET, FTIR and NH3-TPD techniques. The results indicated that the nature of the template determines the physiochemical properties of CeAPSO-34 due to different rate of crystal growth. The catalyst obtained by using morpholine showed longer life time as well as sustaining light olefins selectivity at higher values. Furthermore, a comprehensive thermodynamic analysis of overall reactions network was carried out to address the major channels of methanol to olefins conversion. - Highlights: • Introduction of Ce into SAPO-34 framework. • Comparison of CeAPSO-34 synthesized using morpholine and TEAOH. • The nature of the template determines the physiochemical properties of CeAPSO-34. • Morpholine enhances catalyst lifetime in MTO process. • Presenting a complete reaction network for MTO process. - Abstract: TEAOH and morpholine were employed in synthesis of nanostructured CeAPSO-34 molecular sieve and used in methanol to olefins conversion. Prepared samples were characterized by XRD, FESEM, EDX, BET, FTIR and NH{sub 3}-TPD techniques. XRD patterns reflected the higher crystallinity of the catalyst synthesized with morpholine. The FESEM results indicated that the nature of the template determines the morphology of nanostructured CeAPSO-34 due to different rate of crystal growth. There was a meaningful difference in the strength of both strong and weak acid sites for CeAPSO-34 catalysts synthesized with TEAOH and morpholine templates. The catalyst synthesized with morpholine showed higher desorption temperature of both weak and strong acid sites evidenced by NH{sub 3}-TPD characterization. The catalyst obtained using morpholine template had the longer lifetime and sustained desired light olefins at higher values. A comprehensive thermodynamic analysis of overall reactions network was carried out to address the major channels of methanol to olefins conversion.

  18. HL Power Geothermal Facility | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG| Open EnergyGuntersville ElectricControlon State -HDOT Forms

  19. HL Green Power Co | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating AGeothermal/ExplorationGoodsGuangzhou,GuizhouGuyana: EnergyHERO BXHHVHISAHL

  20. Superior performance of Ni-W-Ce mixed-metal oxide catalysts for ethanol steam reforming: Synergistic effects of W- and Ni-dopants

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

    Rodriguez, Jose A. [Brookhaven National Lab. (BNL), Upton, NY (United States); State Univ. of New York Stony Brook, Stony Brook, NY (United States); Liu, Zongyuan [Brookhaven National Lab. (BNL), Upton, NY (United States); State Univ. of New York Stony Brook, Stony Brook, NY (United States); Xu, Wenqian [Brookhaven National Lab. (BNL), Upton, NY (United States); Yao, Siyu [Brookhaven National Lab. (BNL), Upton, NY (United States); Johnson-Peck, Aaron C. [Brookhaven National Lab. (BNL), Upton, NY (United States); Zhao, Fuzhen [Brookhaven National Lab. (BNL), Upton, NY (United States); Michorczyk, Piotr [Inst. de Catalisis y Petroleoquimica, Madrid (Spain); Kubacka, Anna [Inst. de Catalisis y Petroleoquimica, Madrid (Spain); Stach, Eric A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Fernandez-Garica, Marcos [State Univ. of New York Stony Brook, Stony Brook, NY (United States); Senanayake, Sanjaya D. [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2015-01-01T23:59:59.000Z

    The ethanol steam reforming (ESR) reaction was studied over a series of Ni-W-Ce oxide catalysts. The structures of the catalysts were characterized using in-situ techniques including X-ray diffraction, Pair Distribution Function, X-ray absorption fine structure and transmission electron microscopy; while possible surface intermediates for the ESR reaction were investigated by Diffuse Reflectance Infrared Fourier Transform Spectroscopy. In these materials, all the W and part of the Ni were incorporated into the CeO? lattice, with the remaining Ni forming highly dispersed nano NiO (< 2 nm) outside the Ni-W-Ce oxide structure. The nano NiO was reduced to Ni under ESR conditions. The Ni-W-Ce systeme exhibited a much larger lattice strain than those seen for Ni-Ce and W-Ce. Synergistic effects between Ni and W inside ceria produced a substantial amount of defects and O vacancies that led to high catalytic activity, selectivity and stability (i.e. resistance to coke formation) during ethanol steam reforming.

  1. Superior performance of Ni-W-Ce mixed-metal oxide catalysts for ethanol steam reforming: Synergistic effects of W- and Ni-dopants

    SciTech Connect (OSTI)

    Rodriguez, Jose A. [Brookhaven National Lab. (BNL), Upton, NY (United States); State Univ. of New York Stony Brook, Stony Brook, NY (United States); Liu, Zongyuan [Brookhaven National Lab. (BNL), Upton, NY (United States); State Univ. of New York Stony Brook, Stony Brook, NY (United States); Xu, Wenqian [Brookhaven National Lab. (BNL), Upton, NY (United States); Yao, Siyu [Brookhaven National Lab. (BNL), Upton, NY (United States); Johnson-Peck, Aaron C. [Brookhaven National Lab. (BNL), Upton, NY (United States); Zhao, Fuzhen [Brookhaven National Lab. (BNL), Upton, NY (United States); Michorczyk, Piotr [Inst. de Catalisis y Petroleoquimica, Madrid (Spain); Kubacka, Anna [Inst. de Catalisis y Petroleoquimica, Madrid (Spain); Stach, Eric A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Fernandez-Garica, Marcos [State Univ. of New York Stony Brook, Stony Brook, NY (United States); Senanayake, Sanjaya D. [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2015-01-01T23:59:59.000Z

    The ethanol steam reforming (ESR) reaction was studied over a series of Ni-W-Ce oxide catalysts. The structures of the catalysts were characterized using in-situ techniques including X-ray diffraction, Pair Distribution Function, X-ray absorption fine structure and transmission electron microscopy; while possible surface intermediates for the ESR reaction were investigated by Diffuse Reflectance Infrared Fourier Transform Spectroscopy. In these materials, all the W and part of the Ni were incorporated into the CeO? lattice, with the remaining Ni forming highly dispersed nano NiO (< 2 nm) outside the Ni-W-Ce oxide structure. The nano NiO was reduced to Ni under ESR conditions. The Ni-W-Ce systeme exhibited a much larger lattice strain than those seen for Ni-Ce and W-Ce. Synergistic effects between Ni and W inside ceria produced a substantial amount of defects and O vacancies that led to high catalytic activity, selectivity and stability (i.e. resistance to coke formation) during ethanol steam reforming.

  2. Antiferromagnetic Kondo lattice in the layered compound CePd1–xBi? and comparison to the superconductor LaPd1–xBi?

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

    Han, Fei; Wan, Xiangang; Phelan, Daniel; Stoumpos, Constantinos C.; Sturza, Mihai; Malliakas, Christos D.; Li, Qing'an; Han, Tian-Heng; Zhao, Qingbiao; Chung, Duck Young; et al

    2015-07-01T23:59:59.000Z

    The layered compound CePd1–xBi? with the tetragonal ZrCuSi?-type structure was obtained from excess Bi flux. Magnetic susceptibility data of CePd1–xBi? show an antiferromagnetic ordering below 6 K and are anisotropic along the c axis and the ab plane. The anisotropy is attributed to crystal-electric-field (CEF) effects and a CEF model which is able to describe the susceptibility data is given. An enhanced Sommerfeld coefficient ? of 0.191 J mol Ce?¹ K?² obtained from specific-heat measurement suggests a moderate Kondo effect in CePd1–xBi?. Other than the antiferromagnetic peak at 6 K, the resistivity curve shows a shoulderlike behavior around 75 Kmore »which could be attributed to the interplay between Kondo and CEF effects. Magnetoresistance and Hall-effect measurements suggest that the interplay reconstructs the Fermi-surface topology of CePd1–xBi? around 75 K. Electronic structure calculations reveal that the Pd vacancies are important to the magnetic structure and enhance the CEF effects which quench the orbital moment of Ce at low temperatures.« less

  3. Crystalline Electric Field as a Probe for Long-Range Antiferromagnetic Order and Superconducting State of CeFeAsO1-xFx

    SciTech Connect (OSTI)

    Chi, Songxue [University of Tennessee, Knoxville (UTK); Adroja, D. T. [ISIS Facility, Rutherford Appleton Laboratory; GUIDI, T. [ISIS Facility, Rutherford Appleton Laboratory; Bewley, Robert I. [ISIS Facility, Rutherford Appleton Laboratory; Li, Shiliang [University of Tennessee, Knoxville (UTK); Zhao, Jun [ORNL; Lynn, J. W. [National Institute of Standards and Technology (NIST); Brown, C. M. [National Institute of Standards and Technology (NIST); Qiu, Y. [National Institute of Standards and Technology (NIST); Chen, G. F, [Beijing National Laboratory for Condensed Matter Physics, Institute of Physics; Luo, J. L. [Chinese Academy of Sciences; Wang, N. L. [Chinese Academy of Sciences; Dai, Pengcheng [ORNL

    2008-01-01T23:59:59.000Z

    We use inelastic neutron scattering to study the crystalline electric field (CEF) excitations of Ce{sup 3+} in CeFeAsO{sub 1-x}F{sub x} (x=0, 0.16). For nonsuperconducting CeFeAsO, the Ce CEF levels have three magnetic doublets in the paramagnetic state, but these doublets split into six singlets when the Fe ions order antiferromagnetically. For superconducting CeFeAsO{sub 0.84}F{sub 0.16} (T{sub c} = 41 K), where the static antiferromagnetic order is suppressed, the Ce CEF levels have three magnetic doublets at {h_bar}{sub {omega}} = 0, 18.7, 58.4 meV at all temperatures. Careful measurements of the intrinsic linewidth {Lambda} and the peak position of the 18.7 meV mode reveal a clear anomaly at T{sub c}, consistent with a strong enhancement of local magnetic susceptibility {chi}{double_prime}({h_bar}{sub {omega}}) below T{sub c}. These results suggest that CEF excitations in the rare-earth oxypnictides can be used as a probe of spin dynamics in the nearby FeAs planes.

  4. SESAME 96170, a solid-liquid equation of state for CeO2

    SciTech Connect (OSTI)

    Chisolm, Eric D. [Los Alamos National Laboratory] [Los Alamos National Laboratory

    2014-05-02T23:59:59.000Z

    I describe an equation of state (EOS) for the low-pressure solid phase and liquid phase of cerium (IV) oxide, CeO{sub 2}. The models and parameters used to calculate the EOS are presented in detail, and I compare with data for the full-density crystal. Hugoniot data are available only for high-porosity powders, and I discuss difficulties in comparing with such data. I have constructed SESAME 96170, an EOS for cerium (IV) oxide that includes the ambient solid and liquid phases. The EOS extends over the full standard SESAME range, but should not be used at low temperatures and high densities because of the lack of a high-pressure solid phase. I have described the models used to compute the three terms of the EOS (cold curve, nuclear, and thermal electronic), and I have given the parameters used in the models. They were determined by comparison with experimental data at P = 1 atm, including the constant-pressure specific heat, coefficient of thermal expansion, and melting and boiling points. The EOS compares well with data in its intended range of validity, but the presence of high-frequency optical modes in its phonon spectrum limits the agreement of our models with thermal data. The next step is to construct a multiphase EOS that includes the low- and high-pressure solid phases and the liquid. The DAC data from Duclos will most strongly constrain the parameters of the high-pressure solid. A remaining issue is the comparison of the crystal-density EOS with experimental Hugoniot data, which are taken at much lower initial data because the samples are porous powders. A satisfactory means of modeling porosity, allowing comparison of theory and experiment, has not yet been produced.

  5. Hierarchical heterogeneity at the CeOx-TiO? interface: Electronic and geometric structural influence on the photocatalytic activity of oxide on oxide nanostructures

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

    Luo, Si [Brookhaven National Lab. (BNL), Upton, NY (United States); Nguyen-Phan, Thuy-Duong [Brookhaven National Lab. (BNL), Upton, NY (United States); Johnston-Peck, Aaron C. [Brookhaven National Lab. (BNL), Upton, NY (United States); Barrio, Laura [CSIC - Inst. de Catalisis y Petroleoquimica, Madrid (Spain); Sallis, Shawn [Binghamton Univ., NY (United States); Arena, Dario A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Kundu, Shankhamala [Brookhaven National Lab. (BNL), Upton, NY (United States); Xu, Wenqian [Brookhaven National Lab. (BNL), Upton, NY (United States); Piper, Louis F. J. [Binghamton Univ., NY (United States); Stach, Eric A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Polyansky, Dmitry E. [Brookhaven National Lab. (BNL), Upton, NY (United States); Fujita, Etsuko [Brookhaven National Lab. (BNL), Upton, NY (United States); Rodriguez, José A. [Brookhaven National Lab. (BNL), Upton, NY (United States); CSIC - Inst. de Catalisis y Petroleoquimica, Madrid (Spain); Senanayake, Sanjaya D. [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2015-01-27T23:59:59.000Z

    Mixed oxide interfaces are critical for delivering active components of demanding catalytic processes such as the photo-catalytic splitting of water. We have studied CeOxTiO? catalysts with low ceria loadings of 1 wt%, 3 wt% and 6 wt% that were prepared with wet impregnation methods to favor a strong interaction between CeOx and TiO?. In these materials the interfaces between CeOx-TiO? have been sequentially loaded (1%, 3% and 6%), with and without Pt (0.5 wt%). The structure and properties of the catalysts were characterized using several X-ray and electron based techniques including XRD, XPS, UPS, NEXAFS, UV-Vis and HR-STEM/STEM-EELS, to unravel the local morphology, bulk structure, surface states and electronic structure. The combination of all these techniques allow us to analyze in a systematic way the complete structural and electronic properties that prevail at the CeOx-TiO? interface. Fluorite structured nano crystallites of ceria on anatase-structured titania were identified by both XRD and NEXAFS. A sequential increasing of the CeOx loading led to the formation of clusters, then plates and finally nano particles in a hierarchical manner on the TiO? support. The electronic structures of these catalysts indicate that the interaction between TiO? and CeO? is closely related to the local morphology of nanostructured CeO?. Ce³? cations were detected at the surface of CeO? and at the interface of the two oxides. In addition, the titania is perturbed by the interaction with ceria and also with Pt. The photocatalytic activity for the splitting of H?O using UV light was measured for these materials and correlated with our understanding of the electronic and structural properties. Optimal catalytic performance and photo response results were found for the 1 wt% CeOx-TiO? catalyst where low dimensional geometry of the ceria provided ideal electronic and geometrical properties. The structural and electronic properties of the interface were critical for the photocatalytic performance of this mixed-oxide nanocatalyst system.

  6. Structural and magnetic properties in the polymorphs of CeRh{sub 0.5}Ge{sub 1.5}

    SciTech Connect (OSTI)

    Kalsi, Deepti; Subbarao, Udumula [New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore-560064 (India); Rayaprol, Sudhindra [UGC-DAE Consortium for Scientific Research, R-5 Shed, B.A.R.C Campus, Trombay, Mumbai-400085 (India); Peter, Sebastian C., E-mail: sebastiancp@jncasr.ac.in [New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore-560064 (India)

    2014-04-01T23:59:59.000Z

    We investigate the structural and magnetic properties in the polymorphs of a new compound CeRh{sub 0.5}Ge{sub 1.5}. Depending upon the starting materials, and the slightly different synthesis method, we find that CeRh{sub 0.5}Ge{sub 1.5} compound exists in two different space groups. The first compound, ?-CeRh{sub 0.5}Ge{sub 1.5} crystallizes in tetragonal ?-ThSi{sub 2} structure type in space group I4{sub 1}/amd with lattice parameters, a=4.2034(6) Å and c=14.770(3) Å. In this structure, the cerium atoms occupy the position between the Rh/Ge tetrahedral layers. On the other hand, the second compound, namely ?-CeRh{sub 0.5}Ge{sub 1.5} crystallizes in the AlB{sub 2} type hexagonal structure in space group P6/mmm, with lattice parameters, a=4.2615(7) Å and c=4.1813(9) Å. The crystal structure of ?-CeRh{sub 0.5}Ge{sub 1.5} consists of two dimensional Rh/Ge hexagonal units and the cerium atoms are sandwiched between them. Magnetization studies exhibit magnetic ordering, as evident from a sharp peak in the plot of magnetic susceptibility measured as a function of temperature in a fixed magnetic field, in ?-CeRh{sub 0.5}Ge{sub 1.5} and ?-CeRh{sub 0.5}Ge{sub 1.5} at 3.6 K and 12 K, respectively. Structural and magnetic properties of both compounds are presented and discussed here. - Graphical abstract: Two polymorphs of a new compound CeRh{sub 0.5}Ge{sub 1.5} in the ?-ThSi{sub 2} and AlB{sub 2} structure types were synthesized by arc melting. The magnetic measurements of both CeRh{sub 0.5}Ge{sub 1.5} phases suggest spin-glass behavior. - Highlights: • A new compound CeRh{sub 0.5}Ge{sub 1.5} in two difference phases was synthesized by arc melting. • The crystal structure of both compounds was determined from the single crystal XRD. • Isothermal relaxation measurements suggesting spin-glass like anomalies in both phases.

  7. Interaction of Ce{sub 1?x}Er{sub x}O{sub 2?y} nanoparticles with SiO{sub 2}-effect of temperature and atmosphere

    SciTech Connect (OSTI)

    Kepinski, L., E-mail: L.Kepinski@int.pan.wroc.pl; Krajczyk, L.; Mista, W.

    2014-01-15T23:59:59.000Z

    Morphology, microstructure and phase evolution of homogeneous, nanocrystalline Ce{sub 1?x}Er{sub x}O{sub 2?x/2} mixed oxide (x=0.3 and 0.5), prepared by microemulsion method, supported on amorphous SiO{sub 2} was studied in oxidizing and reducing atmosphere by XRD, TEM, SEM-EDS and N{sub 2} adsorption. The system is structurally and chemically stable in the oxidizing atmosphere up to 1000 °C, exhibiting only a small increase of the mean crystallite size of the oxide to ?4 nm. At 1100 °C formation of Er silicate with unusual structure isomorphic with y-Y{sub 2}Si{sub 2}O{sub 7} (yttrialite), stabilized by Ce{sup 4+} ions was observed. In the reducing atmosphere the Ce{sub 1?x}Er{sub x}O{sub 2?x/2} reacted with SiO{sub 2} already at 900 °C, due to high affinity of the reduced Ce{sup 3+} to form a silicate phase. At higher temperature the silicate crystallized into the tetragonal, low temperature A-(Ce{sub 1?x}Er{sub x}){sub 2}Si{sub 2}O{sub 7} polymorph. Such systems, containing nanocrystalline silicate particles with Er{sup 3+} ions placed in well defined sites embedded in silica matrix, may be interesting as highly efficient active components of optical waveguides amplifiers integrated with Si microelectronics. The nanocrystalline Ce–Er–O/SiO{sub 2} system prepared by the impregnation of the silica with the aqueous solution of nitrates appeared to be chemically inhomogeneous and less stable in both oxidising and reducing atmosphere. - Graphical abstract: Structure evolution of Ce{sub 0.5}Er{sub 0.5}O{sub 1.75} in air and in H{sub 2}. Display Omitted - Highlights: • Homogeneous 3 nm Ce{sub 1?x}Er{sub x}O{sub 2?y} particles were prepared and uniformly dispersed on SiO{sub 2}. • Er diffusion to SiO{sub 2} determines the stability of the mixed oxide in air to ?1000 °C. • Spreading of Ce{sub 1?x}Er{sub x}O{sub 2?y} onto SiO{sub 2} occurs in hydrogen at 900 °C. • Nanocrystalline A-(Ce,Er){sub 2}Si{sub 2}O{sub 7} silicate forms in H{sub 2} at 1100 °C.

  8. Hierarchical heterogeneity at the CeOx-TiO? interface: Electronic and geometric structural influence on the photocatalytic activity of oxide on oxide nanostructures

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

    Luo, Si; Nguyen-Phan, Thuy-Duong; Johnston-Peck, Aaron C.; Barrio, Laura; Sallis, Shawn; Arena, Dario A.; Kundu, Shankhamala; Xu, Wenqian; Piper, Louis F. J.; Stach, Eric A.; et al

    2015-01-27T23:59:59.000Z

    Mixed oxide interfaces are critical for delivering active components of demanding catalytic processes such as the photo-catalytic splitting of water. We have studied CeOxTiO? catalysts with low ceria loadings of 1 wt%, 3 wt% and 6 wt% that were prepared with wet impregnation methods to favor a strong interaction between CeOx and TiO?. In these materials the interfaces between CeOx-TiO? have been sequentially loaded (1%, 3% and 6%), with and without Pt (0.5 wt%). The structure and properties of the catalysts were characterized using several X-ray and electron based techniques including XRD, XPS, UPS, NEXAFS, UV-Vis and HR-STEM/STEM-EELS, to unravelmore »the local morphology, bulk structure, surface states and electronic structure. The combination of all these techniques allow us to analyze in a systematic way the complete structural and electronic properties that prevail at the CeOx-TiO? interface. Fluorite structured nano crystallites of ceria on anatase-structured titania were identified by both XRD and NEXAFS. A sequential increasing of the CeOx loading led to the formation of clusters, then plates and finally nano particles in a hierarchical manner on the TiO? support. The electronic structures of these catalysts indicate that the interaction between TiO? and CeO? is closely related to the local morphology of nanostructured CeO?. Ce³? cations were detected at the surface of CeO? and at the interface of the two oxides. In addition, the titania is perturbed by the interaction with ceria and also with Pt. The photocatalytic activity for the splitting of H?O using UV light was measured for these materials and correlated with our understanding of the electronic and structural properties. Optimal catalytic performance and photo response results were found for the 1 wt% CeOx-TiO? catalyst where low dimensional geometry of the ceria provided ideal electronic and geometrical properties. The structural and electronic properties of the interface were critical for the photocatalytic performance of this mixed-oxide nanocatalyst system.« less

  9. Transport properties of partially-filled Ce{sub y}Co{sub 4}Sb{sub 12}

    SciTech Connect (OSTI)

    Uher, C.; Chen, B.; Hu, S.; Morelli, D.T.; Meisner, G.P.

    1997-07-01T23:59:59.000Z

    The authors have investigated the magnetic and transport properties of Ce{sub y}Co{sub 4}Sb{sub 12} filled skutterudites with the filling fraction y {le} 0.1. These compounds are n-type materials that develop a magnetic moment upon the presence of trivalent cerium. Cerium has a strong influence on all transport properties and even in small amounts it drastically reduces the lattice thermal conductivity. The resulting figures of merit are comparable to the values established previously for the p-type filled skutterudites.

  10. CE IGCC repowering project: Clean Coal II Project. Annual report, 1 January, 1992--31 December, 1992

    SciTech Connect (OSTI)

    Not Available

    1993-12-01T23:59:59.000Z

    CE is participating in a $270 million coal gasification combined cycle repowering project that will provide a nominal 60 MW of electricity to City, Water, light and Power (CWL and P) in Springfield, Illinois. The IGCC system will consist of CE`s air-blown entrained flow two-stage gasifier; an advanced hot gas cleanup system; a combustion turbine adapted to use low-Btu gas: and all necessary coal handling equipment. The project is currently in the second budget period of five. The major activities during this budgeted period are: Establishment of an approved for design (AFD) engineering package; development of a detailed cost estimate; resolution of project business issues; CWL and P renewal and replacement activities; and application for environmental air permits. The Project Management Plan was updated. The conceptual design of the plant was completed and a cost and schedule baseline for the project was established previously in Budget Period One. This information was used to establish AFD Process Flow Diagrams, Piping and Instrument Diagrams, Equipment Data Sheets, material take offs, site modification plans and other information necessary to develop a plus or minus 20% cost estimate. Environmental permitting activities are continuing. At the end of 1992 the major activities remaining for Budget Period two is to finish the cost estimate and complete the Continuation Request Documents.

  11. Rapid Microwave Preparation of Highly Efficient Ce[superscript 3+]-Substituted Garnet Phosphors for Solid State White Lighting

    SciTech Connect (OSTI)

    Birkel, Alexander; Denault, Kristin A.; George, Nathan C.; Doll, Courtney E.; Héry, Bathylle; Mikhailovsky, Alexander A.; Birkel, Christina S.; Hong, Byung-Chul; Seshadri, Ram (UCSB); (Mitsubishi)

    2012-04-30T23:59:59.000Z

    Ce{sup 3+}-substituted aluminum garnet compounds of yttrium (Y{sub 3}Al{sub 5}O{sub 12}) and lutetium (Lu{sub 3}Al{sub 5}O{sub 12}) - both important compounds in the generation of (In,Ga)N-based solid state white lighting - have been prepared using a simple microwave heating technique involving the use of a microwave susceptor to provide the initial heat source. Carbon used as the susceptor additionally creates a reducing atmosphere around the sample that helps stabilize the desired luminescent compound. High quality, phase-pure materials are prepared within a fraction of the time and using a fraction of the energy required in a conventional ceramic preparation; the microwave technique allows for a reduction of about 95% in preparation time, making it possible to obtain phase pure, Ce{sup 3+}-substituted garnet compounds in under 20 min of reaction time. It is estimated that the overall reduction in energy compared with ceramic routes as practiced in the lab is close to 99%. Conventionally prepared material is compared with material prepared using microwave heating in terms of structure, morphology, and optical properties, including quantum yield and thermal quenching of luminescence. Finally, the microwave-prepared compounds have been incorporated into light-emitting diode 'caps' to test their performance characteristics in a real device, in terms of their photon efficiency and color coordinates.

  12. Microstructure characterization and electrical transport of nanocrystalline ZrO{sub 2}–CeO{sub 2} solid solution

    SciTech Connect (OSTI)

    Saha, S. [Department of Physics, National Institute of Technology, Durgapur, Burdwan 713209, West Bengal (India); Dutta, H. [Department of Physics, Vivekananda College, Burdwan 713103, West Bengal (India); Meikap, A.K., E-mail: meikapnitd@yahoo.com [Department of Physics, National Institute of Technology, Durgapur, Burdwan 713209, West Bengal (India); Pradhan, S.K., E-mail: skp_bu@yahoo.com [Department of Physics, The University of Burdwan, Golapbag, Burdwan 713104, West Bengal (India)

    2013-10-15T23:59:59.000Z

    Graphical abstract: - Highlights: • Monoclinic ZrO{sub 2} phase has been changed to cubic ZrO{sub 2} phase within a short milling. • Conductivity increases due to change of phase from monoclinic to cubic. • A maximum has been observed in the s–T curve. • A transformation from ?ve to +ve ac magnetoconductance has been observed. - Abstract: Nanocrystalline ZrO{sub 2}–CeO{sub 2} (ZC) solid solution is synthesized by high energy ball-milling the powder mixture of monoclinic (m) ZrO{sub 2}–10 mol% CeO{sub 2} in air medium. X-ray powder diffraction (XRD) patterns show that the method IS effective to synthesize cubic (c) ZrO{sub 2} phase within a short milling time. Formation mechanism, structural and microstructural changes of different phases and relative phase abundances have been estimated by Rietveld analysis of XRD patterns. The dc conductivity has been enhanced due to monoclinic to cubic phase transformation. A transformation from small polaron hopping to correlated barrier hoping has been observed from the of temperature dependence frequency exponent study. A crossover from negative to positive ac magnetoconductance has been observed at temperature T = 280 K and 230 K for unmilled (ZC0H) and 8 h (ZC8H) milled samples, respectively.

  13. TL and PL studies on cubic fluoroperovskite single crystal (KMgF{sub 3}: Eu{sup 2+}, Ce{sup 3+})

    SciTech Connect (OSTI)

    Daniel, D. Joseph, E-mail: josephd@ssn.edu.in; Ramasamy, P. [Centre for Crystal Growth, SSN College of Engineering, Kalavakkam, Tamilnadu-603110 (India); Madhusoodanan, U.; Annalakshmi, O. [Radiological Safety Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamilnadu - 603102 (India)

    2014-04-24T23:59:59.000Z

    The perovskite-like KMgF{sub 3} polycrystalline compounds were synthesized by standard solid state reaction technique. Phase purity of the synthesized compounds was analyzed by powder X-ray diffraction technique. Single crystals of (0.2 mol% of EuF{sub 3} and CeF{sub 3}) Co-doped KMgF{sub 3} have been grown from melt by using a vertical Bridgman-Stockbarger method. Thermoluminescence (TL) characteristics of KMgF{sub 3} samples doped with Eu{sub 2+} and Ce{sub 3+} have been studied after ?-ray irradiation. At ambient conditions the photoluminescence spectra consisted of sharp line peaked of Eu{sub 2+} at 360 nm attributed to the f ? f transition ({sup 6}P{sub 7/2}?{sup 8}S{sub 7/2}) could only be observed due to the energy transfer from Ce{sub 3+} to Eu{sub 2+}.

  14. Thiolate ligands as a double-edged sword for CO oxidation on CeO2-supported Au25(SR)18 nanoclusters

    SciTech Connect (OSTI)

    Wu, Zili [ORNL; Jiang, Deen [ORNL; Mann, Amanda K [ORNL; Mullins, David R [ORNL; Qiao, Zhen-an [University of Tennessee, Knoxville (UTK); Allard Jr, Lawrence Frederick [ORNL; Zeng, Chenjie [Carnegie Mellon University (CMU); Jin, Rongchao [Carnegie Mellon University (CMU); Overbury, Steven {Steve} H [ORNL

    2014-01-01T23:59:59.000Z

    The effect of thiolate ligands was explored on the catalysis of CeO2-rod supported Au25(SR)18 (SR = -SCH2-CH2-Ph) by using CO oxidation as a probe reaction. Reaction kinetic tests, in situ IR and X-ray absorption spectroscopy, and density functional theory (DFT) were employed to understand how the thiolate ligands affect the nature of active sites, activation of CO and O2, as well as the reaction mechanism and kinetics. The intact Au25(SR)18 on CeO2-rod is found not able to adsorb CO. Only when the thiolate ligands are partially removed, starting from the interface between Au25(SR)18 and CeO2 at temperatures of 423 K and above, can the adsorption of CO be observed by IR. DFT calculations suggest that CO adsorbs favorably on the exposed gold atoms. Accordingly, the CO oxidation light-off temperature shifts to lower temperature. Several types of Au sites are probed by IR of CO adsorption during the ligand removal process. The cationic Au sites (charged between 0 and +1) are found to play the major role for low temperature CO oxidation. Similar activation energy and reaction rate are found for CO oxidation on differently treated Au25(SR)18/CeO2-rod, suggesting a simple site-blocking effect of the thiolate ligands in Au nanoclusters catalysis. Isotopic labelling experiments clearly indicate that CO oxidation on Au25(SR)18/CeO2-rod proceeds predominantly via the redox mechanism where CeO2 activates O2 while CO is activated on the de-thiolated gold sites. These results points to a double-edged sword role played by the thiolate ligands on Au25 nanoclusters for CO oxidation.

  15. Lu.sub.1-xI.sub.3:Ce.sub.x-a scintillator for gamma-ray spectroscopy and time-of-flight pet

    DOE Patents [OSTI]

    Shah, Kanai S. (Newton, MA)

    2008-02-12T23:59:59.000Z

    The present invention includes very fast scintillator materials including lutetium iodide doped with Cerium (Lu.sub.1-xI.sub.3:Ce.sub.x; LuI.sub.3:Ce). The LuI.sub.3 scintillator material has surprisingly good characteristics including high light output, high gamma-ray stopping efficiency, fast response, low cost, good proportionality, and minimal afterglow that the material is useful for gamma-ray spectroscopy, medical imaging, nuclear and high energy physics research, diffraction, non-destructive testing, nuclear treaty verification and safeguards, and geological exploration.

  16. Photorefractive properties of Ce- and Ca-doped Sr/sub 0. 6/Ba/sub 0. 4/Nb/sub 2/O/sub 6/

    SciTech Connect (OSTI)

    Rakuljic, G.A.; Sayano, K.; Agranat, A.; Yariv, A.; Neurgaonkar, R.R.

    1988-10-17T23:59:59.000Z

    We present the results of experimental study of the absorption coefficient, two-beam photorefractive coupling constant, and photorefractive response time of a doubly Ce- and Ca-doped Sr/sub 0.6/Ba/sub 0.4/Nb/sub 2/O/sub 6/. This crystal displays enhanced photorefractive response at near infrared wavelengths when compared to Ce-doped SBN:60. The temperature dependence of the coupling constant over the range from -30 to 40 /sup 0/C has also been studied.

  17. Synthesis and the crystal and molecular structures of 4-(piperidyl-1)-2-phenylpyrido[2,3-a]anthraquinone-7,12 Mono- and dibromohydrates (HL)Br . 3H{sub 2}O and (H{sub 2}L)Br{sub 2} . 3H{sub 2}O

    SciTech Connect (OSTI)

    Kovalchukova, O. V., E-mail: okovalchukova@mail.ru [Peoples' Friendship University of Russia (Russian Federation); Stash, A. I.; Belsky, V. K. [Karpov Institute of Physical Chemistry (Russian Federation); Strashnova, S. B.; Zaitsev, B. E.; Ryabov, M. A. [Peoples' Friendship University of Russia (Russian Federation)

    2009-01-15T23:59:59.000Z

    4-(Piperidyl-1)-2-phenylpyrido[2,3-a]anthraquinone-7,12 monobromohydrate (HL)Br . 3H{sub 2}O (I) and 4-(piperidyl-1)-2-phenylpyrido[2,3-a]anthraquinone-7,12 dibromohydrate (H{sub 2}L)Br{sub 2} . 3H{sub 2}O (II) are isolated in the crystalline state. The crystal structures of compounds I and II are determined using X-ray diffraction. It is established that the protonation of 4-(piperidyl-1)-2-phenylpyrido[2,3-a]anthraquinone-7,12 proceeds primarily through the pyridine atom at pH 2-3. The attachment of the second proton occurs through the piperidine nitrogen atom at pH {approx} 1.

  18. Hydrogen activation, diffusion, and clustering on CeO{sub 2}(111): A DFT+U study

    SciTech Connect (OSTI)

    Fernández-Torre, Delia [Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid, E-28049 Madrid (Spain); Instituto de Estructura de la Materia, CSIC, C/ Serrano 121, E-28006 Madrid (Spain); Carrasco, Javier [CIC Energigune, Albert Einstein 48, 01510 Miñano, Álava (Spain); Instituto de Catálisis y Petroleoquímica, CSIC, C/ Marie Curie 2, E-28049 Madrid (Spain); Ganduglia-Pirovano, M. Verónica [Instituto de Catálisis y Petroleoquímica, CSIC, C/ Marie Curie 2, E-28049 Madrid (Spain); Pérez, Rubén, E-mail: ruben.perez@uam.es [Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid, E-28049 Madrid (Spain); Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, E-28049 Madrid (Spain)

    2014-07-07T23:59:59.000Z

    We present a comprehensive density functional theory+U study of the mechanisms underlying the dissociation of molecular hydrogen, and diffusion and clustering of the resulting atomic species on the CeO{sub 2}(111) surface. Contrary to a widely held view based solely on a previous theoretical prediction, our results show conclusively that H{sub 2} dissociation is an activated process with a large energy barrier ?1.0 eV that is not significantly affected by coverage or the presence of surface oxygen vacancies. The reaction proceeds through a local energy minimum – where the molecule is located close to one of the surface oxygen atoms and the H–H bond has been substantially weaken by the interaction with the substrate –, and a transition state where one H atom is attached to a surface O atom and the other H atom sits on-top of a Ce{sup 4+} ion. In addition, we have explored how several factors, including H coverage, the location of Ce{sup 3+} ions as well as the U value, may affect the chemisorption energy and the relative stability of isolated OH groups versus pair and trimer structures. The trimer stability at low H coverages and the larger upward relaxation of the surface O atoms within the OH groups are consistent with the assignment of the frequent experimental observation by non-contact atomic force and scanning tunneling microscopies of bright protrusions on three neighboring surface O atoms to a triple OH group. The diffusion path of isolated H atoms on the surface goes through the adsorption on-top of an oxygen in the third atomic layer with a large energy barrier of ?1.8 eV. Overall, the large energy barriers for both, molecular dissociation and atomic diffusion, are consistent with the high activity and selectivity found recently in the partial hydrogenation of acetylene catalyzed by ceria at high H{sub 2}/C{sub 2}H{sub 2} ratios.

  19. Computing in SCienCe & engineering This arTicle has been peer-reviewed. 13 R e p r o d u c i b l e R e s e a r c h

    E-Print Network [OSTI]

    LeVeque, Randy

    Computing in SCienCe & engineering This arTicle has been peer-reviewed. 13 R e p r o d u c i b l e as well as some efforts and approaches to overcome them. #12;14 Computing in SCienCe & engineering in 2011; a panel discussion at the International Biometric Society meeting in 2011 featured re- producibility

  20. Electronic and thermoelectric properties of Ce{sub 3}Te{sub 4} and La{sub 3}Te{sub 4} computed with density functional theory with on-site Coulomb interaction correction

    SciTech Connect (OSTI)

    Vo, Trinh; Allmen, Paul von; Huang, Chen-Kuo; Ma, James; Bux, Sabah; Fleurial, Jean-Pierre [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109 (United States)

    2014-10-07T23:59:59.000Z

    The electronic properties and Seebeck coefficients of Ce{sub 3}Te{sub 4} and La{sub 3}Te{sub 4} are computed using Density Functional Theory with on-site Coulomb interaction correction. We found that the Seebeck coefficients of Ce{sub 3}Te{sub 4} and La{sub 3}Te{sub 4} are almost equal at temperatures larger than the Curie temperature of Ce{sub 3}Te{sub 4}, and in good agreement with the measurements reported by May et al. [Phys. Rev. B 86, 035135 (2012)]. At temperatures below the Curie temperature, the Seebeck coefficient of Ce{sub 3}Te{sub 4} increases due to the ferromagnetic ordering, which leads the f-electron of Ce to contribute to the Seebeck coefficient in the relevant range of electron concentration.

  1. IFT1227, Architecture des ordinateurs 1: Ce devoir vous permet de manipuler les robots equipes de la -chip PIC18F4550 presentes en demo.

    E-Print Network [OSTI]

    Boyer, Michel

    IFT1227, Architecture des ordinateurs 1: Devoir 3 Ce devoir vous permet de manipuler les robots robot soit attir´e ou suive une lumi`ere relativement forte (une lampe de poche ou autre mise devant lui). 1 Comportement basique Votre programme devra fournir le comportement suivant : ­ Quand le robot

  2. plan de polarisation de 18', en sens contraire du courant qui anime l'lecuro-aimant. On peut comparer ce rsultat avec l'effet produit

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    celle que produit directement l'acier, ce qui donne pour l'effet de la lame 50' au lieu de 48', nombre un champ magnétique et du phénomène de Peltier. L'expérience de M. Hall est répétée au moyen d

  3. L'agrobiodiversit du dattier (Phoenix dactylifera L.) dans l'oasis de Siwa (gypte) : entre ce qui se dit, s'crit et s'oublie

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    !!!!!!1! L'agrobiodiversité du dattier (Phoenix dactylifera L.) dans l'oasis de Siwa (Égypte culture commerciale principale de l'oasis de Siwa dans le désert libyque égyptien -- suivi de peu par l toujours porté ce nom, bien sûr). Cette oasis isolée en apparence, difficile d'accès c'est certain, est

  4. The Institute for Integrated Cell-Material Sciences (iCeMS) was founded in 2007 as part of a government program called the World Premier International

    E-Print Network [OSTI]

    Takada, Shoji

    , Sports, Science and Technology (MEXT) of Japan. The fund provides a total of 6 million dollars per year science. iCeMS is one of nine WPI centers throughout Japan and boasts eighteen world-renowned principal investigators, who are leading experts in cell biology, chemistry, and physics. Notably, Kyoto University Center

  5. Review of Wavelet Theory and Harmonic Analysis in Applied Sciences, C.E. D'Atellis and E.M. Fernandez-Berdaguer, Ed.

    E-Print Network [OSTI]

    Kon, Mark

    Review of Wavelet Theory and Harmonic Analysis in Applied Sciences, C.E. D'Atellis and E.M. Fernandez-Berdaguer, Ed. Mark A. Kon, Boston University Wavelet theory has had a far-reaching influence, not only on the theory of wavelets, but on their applications in almost every area of science which has

  6. CE'2000, International Conference on Concurrent Engineering, Lyon, France, July 17-20 2000. Negotiation in collaborative assessment of design solutions

    E-Print Network [OSTI]

    Boyer, Edmond

    CE'2000, International Conference on Concurrent Engineering, Lyon, France, July 17-20 2000. 1 Negotiation in collaborative assessment of design solutions: an empirical study on a Concurrent Engineering/SM/CAO M0101/9 316 route de bayonne 31060 Toulouse cedex 03, France Abstract In Concurrent engineering

  7. VI INTERNATIONAL TELECOMMUNICATIONS SYMPOSIUM (ITS2006), SEPTEMBER 3-6, 2006, FORTALEZA-CE, BRAZIL 1 Fringe Benefits of the H.264/AVC

    E-Print Network [OSTI]

    de Queiroz, Ricardo L.

    of the Motion Picture Experts Groups (MPEG) from the International Standards Organization (ISO) and of the VideoVI INTERNATIONAL TELECOMMUNICATIONS SYMPOSIUM (ITS2006), SEPTEMBER 3-6, 2006, FORTALEZA-CE, BRAZIL, and Tiago A. Fonseca Abstract-- H.264/AVC is the newest, state-of-the-art, video compression standard

  8. Nickel deficiency in RENi{sub 2-x}P{sub 2} (RE=La, Ce, Pr). Combined crystallographic and physical property studies

    SciTech Connect (OSTI)

    Bobev, Svilen, E-mail: bobev@udel.ed [Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716 (United States); Xia, Sheng-qing [Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716 (United States); Bauer, Eric D.; Ronning, Filip; Thompson, Joe D.; Sarrao, John L. [Materials Physics and Applications Division (MPA-10), Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

    2009-06-15T23:59:59.000Z

    Large single crystals from RENi{sub 2-x}P{sub 2} (RE=La, Ce, Pr) were synthesized from the pure elements using Sn as a metal flux, and their structures were established by X-ray crystallography. The title compounds were confirmed to crystallize in the body-centered tetragonal ThCr{sub 2}Si{sub 2} structure type (space group I4/mmm (No. 139); Pearson's symbol tI10), but with a significant homogeneity range with respect to the transition metal. Systematic synthetic work, coupled with accurate structure refinements indicated strong correlation between the degree of Ni-deficiency and the reaction conditions. According to the temperature dependent dc magnetization measurements, LaNi{sub 2-x}P{sub 2} (x=0.30(1)), as expected, is Pauli-like paramagnetic in the studied temperature regime, while the Ce-analog CeNi{sub 2-x}P{sub 2} (x=0.28(1)) shows the characteristics of a mixed valent Ce{sup 3+}/Ce{sup 4+} system with a possible Kondo temperature scale on the order of 1000 K. For three different PrNi{sub 2-x}P{sub 2} (x<=0.5) samples, the temperature and field dependence of the magnetization indicated typical local moment 4f-magnetism and a stable Pr{sup 3+} ground state, with subtle variations of T{sub C} as a function of the concentration of Ni defects. Field-dependent heat capacity data for CeNi{sub 2-x}P{sub 2} (x=0.28(1)) and PrNi{sub 2-x}P{sub 2} (x=0.53(1)) are discussed as well. - Graphical abstract: The non-stoichiometric RENi{sub 2-x}P{sub 2} phases (RE=La, Ce, Pr), whose average structure belongs to the ThCr{sub 2}Si{sub 2} type, are shown to exist with a wide range of defects on the transition metal site. The changes in the Ni-underoccupancy affect the magnetism of the synthesized materials.

  9. Substitution effect on the magnetic and transport properties of CeNi{sub 0.8?x}Mn{sub x}Bi{sub 2}

    SciTech Connect (OSTI)

    Kim, Soo-Whan; Lee, Kyujoon; Jung, Myung-Hwa, E-mail: mhjung@sognag.ac.kr [Department of Physics, Sogang University, Seoul 121-742 (Korea, Republic of); Adroja, D. T. [ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX (United Kingdom); Highly Correlated Matter Research Group, Physics Department, University of Johannesburg, P.O. Box 524, Auckland Park 2006 (South Africa); Demmel, F.; Taylor, J. W. [ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX (United Kingdom)

    2014-08-21T23:59:59.000Z

    We report the results of Mn substitution for Ni in CeNi{sub 0.8}Bi{sub 2} (i.e., CeNi{sub 0.8?x}Mn{sub x}Bi{sub 2}). All the samples have an antiferromagnetic ordered state below T{sub N}?=?5.0?K due to localized 4f-magnetic moment on the Ce ions. Besides this antiferromagnetic ordering caused by Ce, the magnetic and transport properties are abruptly changed with increasing Mn contents at the boundary composition of x?=?0.4. The magnetic state is changed into a ferromagnetic state around 200?K for x?>?0.4, where the electrical resistivity is strongly suppressed to become simple metallic. These results of ferromagnetism and metallicity can be explained by the double exchange mechanism, rather than the simple picture of Doniach phase diagram. The mixed valence states of Ni and Mn ions are confirmed by X-ray photoelectron spectroscopy. For x???0.4, the initial Ni{sup 3+} state gradually changes to the Ni{sup 2+} state with increasing x up to 0.4. On further increase of x?>?0.4, the Ni{sup 2+} state is replaced by the Mn{sup 2+} state, which gradually changes to the final Mn{sup 3+} state. We also present an inelastic neutron scattering (INS) measurements on CeNi{sub 0.8}Bi{sub 2} (i.e., x?=?0) between 1.2 and 12?K. The high energy INS study reveals the presence of two well-defined crystal electric field (CEF) excitations near 9?meV and 19?meV at 1.2?K and 6?K, while the low energy INS study reveals the presence of quasielastic scattering above 4?K. We will discuss our INS results of CeNi{sub 0.8}Bi{sub 2} based on the CEF model.

  10. Lu1-xI3:Cex--a scintillator for gamma ray spectroscopy and time-of-flight PET

    DOE Patents [OSTI]

    Shah, Kanai S.

    2007-02-06T23:59:59.000Z

    The present invention concerns very fast scintillator materials comprising lutetium iodide doped with Cerium (Lu1-xI3:Cex; LuI3:Ce). The LuI3 scintillator material has surprisingly good characteristics including high light output, high gamma ray stopping efficiency, fast response, low cost, good proportionality, and minimal afterglow that the material is useful for gamma ray spectroscopy, medical imaging, nuclear and high energy physics research, diffraction, non-destructive testing, nuclear treaty verification and safeguards, and geological exploration. The timing resolution of the scintillators of the present invention provide compositions capable of resolving the position of an annihilation event within a portion of a human body cross-section.

  11. Fabrication of CeO2 by sol-gel process based on microfluidic technology as an analog preparation of ceramic nuclear fuel microspheres

    E-Print Network [OSTI]

    Bin Ye; Jilang Miao; Jiaolong Li; Zichen Zhao; Zhenqi Chang; Christophe A. Serra

    2012-12-15T23:59:59.000Z

    Microfluidics integrated with sol-gel processes is introduced in preparing monodispersed MOX nuclear fuel microspheres using nonactive cerium as a surrogate for uranium or plutonium. The detailed information about microfluidic devices and sol-gel processes are provided. The effects of viscosity and flow rate of continuous and dispersed phase on size and size distribution of CeO2 microspheres have been investigated. A comprehensive characterization of the CeO2 microspheres has been conducted, including XRD pattern, SEM, density, size and size distribution. The size of prepared monodisperse particles can be controlled precisely in range of 10{\\mu}m to 1000{\\mu}m and the particle CV is below 3%.

  12. Nodal to nodeless superconducting energy gap structure change concomitant with Fermi surface reconstruction in the heavy-fermion CeCoIn?

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

    Kim, Hyunsoo; Petrovic, C.; Tanatar, M. A.; Flint, R.; Hu, Rongwei; White, B. D.; Lum, I. K.; Maple, M. B.; Prozorov, R.

    2015-01-01T23:59:59.000Z

    The London penetration depth ?(T) was measured in single crystals of Ce1?xRxCoIn?, R=La, Nd, and Yb down to Tmin ? 50??mK (Tc/Tmin ~50) using a tunnel-diode resonator. In the cleanest samples ??(T) is best described by the power law, ??(T) ? Tn, with n ~ 1, consistent with line nodes. Substitutions of Ce with La, Nd, and Yb lead to similar monotonic suppressions of Tc, however, the effects on ??(T) differ. While La and Nd dopings lead to increase of the exponent n and saturation at n ~ 2, as expected for a dirty nodal superconductor, Yb doping leads tomore »n > 3, suggesting a change from nodal to nodeless superconductivity. This superconducting gap structure change happens in the same doping range where changes of the Fermi surface topology were reported, implying that the nodal structure and Fermi surface topology are closely linked.« less

  13. Contact Undergraduate Admissions Office | Tel +44 (0)117 928 8154 Email socsci-ug-admissions@bristol.ac.uk 54 ACCOUnTing And FinAnCE

    E-Print Network [OSTI]

    Subramanian, Sriram

    -ug-admissions@bristol.ac.uk 54 ACCOUnTing And FinAnCE FACULTY oF soCiAL sCienCes And LAw bristol.ac.uk Accounting and Finance As one of the UK's leading departments for Accounting and Finance, we offer you the opportunity to study and their application skills. bristol.ac.uk/accounting Why study Accounting and Finance at Bristol? Bristol has

  14. De la cit de Copernic la capitale europenne de Ce projet repose sur l'ide de dvelopper un lien original de nature scientifique et

    E-Print Network [OSTI]

    Dintrans, Boris

    Titre De la cité de Copernic à la capitale européenne de l'espace Résumé Ce projet repose sur l de Torun (cité de Copernic) et de Toulouse (cité européenne de l'espace) dans le domaine de l'organisation des manifestations intitulées « De Copernic à Ariane », qui comprendraient des conférences, débats

  15. TUDE DES ISOTONES N = 81 : 139Ce, 141Nd, 143Sm, AU MOYEN DES RACTIONS (d, t ) ET (3He, 03B1)

    E-Print Network [OSTI]

    Boyer, Edmond

    'energie et la fragmentation de ces 6tats en fonction du nombre de protons. Le pick-up d'un neutron sur les'à plus de 3 MeV d'énergie d'excitation, essentiellement au moyen d'un spectromètre magnétique splitpole MeV excitation energy, of the N = 81 isotones : 139Ce, 141Nd, 143 Sm, have been studied at the Orsay

  16. High Activity of Ce1-xNixO2-y for H2 Production through Ethanol Steam Reforming: Tuning Catalytic Performance through Metal-Oxide Interactions

    SciTech Connect (OSTI)

    G Zhou; L Barrio; S Agnoli; S Senanayake; J Evans; A Kubacka; M Estrella; J Hanson; A Martinez-Arias; et al.

    2011-12-31T23:59:59.000Z

    The importance of the oxide: Ce{sub 0.8}Ni{sub 0.2}O{sub 2-y} is an excellent catalyst for ethanol steam reforming. Metal-oxide interactions perturb the electronic properties of the small particles of metallic nickel present in the catalyst under the reaction conditions and thus suppress any methanation activity. The nickel embedded in ceria induces the formation of O vacancies, which facilitate cleavage of the OH bonds in ethanol and water.

  17. Study of oxygen reduction mechanism on Ag modified1 Sm1.8Ce0.2CuO4 cathode for solid oxide fuel cell2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    to oxygen dissociation and diffusion process.26 KEYWORDS: Solid oxide fuel cell; Silver infiltrationStudy of oxygen reduction mechanism on Ag modified1 Sm1.8Ce0.2CuO4 cathode for solid oxide fuel cell2 3 4 Li-Ping Sun1 -- Hui Zhao1 -- Qiang Li1 -- Li-Hua Huo1 -- Jean-Paul Viricelle*2 --5 Christophe

  18. The Reaction of bis(1,2,4-tri-t-butylcyclopentadienyl)ceriumbenzyl, Cp'2CeCH2Ph with Methylhalides: a Metathesis Reaction that does not proceed by a Metathesis Transition State

    SciTech Connect (OSTI)

    Werkema, Evan; Andersen, Richard; Maron, Laurent; Eisenstein, Odile

    2009-09-02T23:59:59.000Z

    The experimental reaction between [1,2,4-(Me3C)3C5H2]2CeCH2Ph and CH3X, X = F, Cl, Br, and I, yields the metathetical exchange products, [1,2,4-(Me3C)3C5H2]2CeX and CH3CH2Ph. The reaction is complicated by the equilibrium between the benzyl derivative and the metallacycle [[1,2,4-(Me3C)3C5H2] [(Me3C)2C5H2C(CH3)2CH2]Ce, plus toluene since the metallacycle reacts with CH3X. Labelling studies show that the methyl group of the methylhalide is transferred intact to the benzyl group. The mechanism, as revealed by DFT calculations on (C5H5)2CeCH2Ph and CH3F, does not proceed by way of a four-center mechanism, (sigma-bond metathesis) but a lower barrier process involves a haptotropic shift of the Cp2Ce fragment so that at the transition state the para-carbon of the benzene ring is attached to the Cp2Ce fragment while the CH2 fragment of the benzyl group attacks CH3F that is activated by coordination to the metal ion. As a result the mechanism is classified as an associative interchange process.

  19. Improved Laboratory Transition Probabilities for Ce II, Application to the Cerium Abundances of the Sun and Five r-process Rich, Metal-Poor Stars, and Rare Earth Lab Data

    E-Print Network [OSTI]

    Lawler, J E; Cowan, J J; Ivans, I I; Hartog, E A Den

    2009-01-01T23:59:59.000Z

    Recent radiative lifetime measurements accurate to +/- 5% using laser-induced fluorescence (LIF) on 43 even-parity and 15 odd-parity levels of Ce II have been combined with new branching fractions measured using a Fourier transform spectrometer (FTS) to determine transition probabilities for 921 lines of Ce II. This improved laboratory data set has been used to determine a new solar photospheric Ce abundance, log epsilon = 1.61 +/- 0.01 (sigma = 0.06 from 45 lines), a value in excellent agreement with the recommended meteoritic abundance, log epsilon = 1.61 +/- 0.02. Revised Ce abundances have also been derived for the r-process-rich metal-poor giant stars BD+17 3248, CS 22892-052, CS 31082-001, HD 115444 and HD 221170. Between 26 and 40 lines were used for determining the Ce abundance in these five stars, yielding a small statistical uncertainty of 0.01 dex similar to the Solar result. The relative abundances in the metal-poor stars of Ce and Eu, a nearly pure r-process element in the Sun, matches r-process ...

  20. Itinerant electrons, local moments, and magnetic correlations in the pnictide superconductors CeFeAsO??xFxand Sr(Fe??xCox)?As?

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

    Vilmercati, Paolo; Fedorov, Alexei; Bondino, Federica; Offi, Francesco; Panaccione, Giancarlo; Lacovig, Paolo; Simonelli, Laura; McGuire, Michael A.; Sefat, Athena S. M.; Mandrus, David; Sales, Brian C.; Egami, Takeshi; Ku, Wei; Mannella, Norman

    2012-06-01T23:59:59.000Z

    A direct and element-specific measurement of the local Fe spin moment has been provided by analyzing the Fe 3s core level photoemission spectra in the parent and optimally doped CeFeAsO??xFx (x = 0, 0.11) and Sr(Fe??xCox)2As2 (x = 0, 0.10) pnictides. The rapid time scales of the photoemission process allowed the detection of large local spin moments fluctuating on a 10?¹? s time scale in the paramagnetic, antiferromagnetic, and superconducting phases, indicative of the occurrence of ubiquitous strong Hund's magnetic correlations. The magnitude of the spin moment is found to vary significantly among different families, 1.3?B in CeFeAsO and 2.1?B in SrFe?As?. Surprisingly, the spin moment is found to decrease considerably in the optimally doped samples, 0.9?B in CeFeAsO?.??F?.?? and 1.3?B in Sr(Fe?.?Co?.?)?As?. The strong variation of the spin moment against doping and material type indicates that the spin moments and the motion of itinerant electrons are influenced reciprocally in a self-consistent fashion, reflecting the strong competition between the antiferromagnetic superexchange interaction among the spin moments and the kinetic energy gain of the itinerant electrons in the presence of a strong Hund's coupling. By describing the evolution of the magnetic correlations concomitant with the appearance of superconductivity, these results constitute a fundamental step toward attaining a correct description of the microscopic mechanisms shaping the electronic properties in the pnictides, including magnetism and high-temperature superconductivity.

  1. Itinerant electrons, local moments, and magnetic correlations in the pnictide superconductors CeFeAsO??xFxand Sr(Fe??xCox)?As?

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

    Vilmercati, Paolo; Fedorov, Alexei; Bondino, Federica; Offi, Francesco; Panaccione, Giancarlo; Lacovig, Paolo; Simonelli, Laura; McGuire, Michael A.; Sefat, Athena S. M.; Mandrus, David; et al

    2012-06-01T23:59:59.000Z

    A direct and element-specific measurement of the local Fe spin moment has been provided by analyzing the Fe 3s core level photoemission spectra in the parent and optimally doped CeFeAsO??xFx (x = 0, 0.11) and Sr(Fe??xCox)2As2 (x = 0, 0.10) pnictides. The rapid time scales of the photoemission process allowed the detection of large local spin moments fluctuating on a 10?¹? s time scale in the paramagnetic, antiferromagnetic, and superconducting phases, indicative of the occurrence of ubiquitous strong Hund's magnetic correlations. The magnitude of the spin moment is found to vary significantly among different families, 1.3?B in CeFeAsO and 2.1?Bmore »in SrFe?As?. Surprisingly, the spin moment is found to decrease considerably in the optimally doped samples, 0.9?B in CeFeAsO?.??F?.?? and 1.3?B in Sr(Fe?.?Co?.?)?As?. The strong variation of the spin moment against doping and material type indicates that the spin moments and the motion of itinerant electrons are influenced reciprocally in a self-consistent fashion, reflecting the strong competition between the antiferromagnetic superexchange interaction among the spin moments and the kinetic energy gain of the itinerant electrons in the presence of a strong Hund's coupling. By describing the evolution of the magnetic correlations concomitant with the appearance of superconductivity, these results constitute a fundamental step toward attaining a correct description of the microscopic mechanisms shaping the electronic properties in the pnictides, including magnetism and high-temperature superconductivity.« less

  2. PoPulation Differentiation anD raPiD evolution of egg Color in aCCorDanCe with Solar raDiation

    E-Print Network [OSTI]

    Lahti, David C.

    PoPulation Differentiation anD raPiD evolution of egg Color in aCCorDanCe with Solar raDiation Davi, . Diferenciación entre Poblaciones y Evolución Rápida del Color de los Huevos de Acuerdo a la Radiación Solar Uy C P' R d Pm wb, ://www.j. m/I.. DOI: 10.1525/k.2008.07033DOI: 10.1525/k.2008.07033 Bird egg color

  3. Analysis of the Spectral Function of Nd1.85Ce0.15CuO4, Obtained by Angle Resolved Photoemission Spectroscopy

    SciTech Connect (OSTI)

    Schmitt, F.

    2010-05-03T23:59:59.000Z

    Samples of Nd{sub 2-x}Ce{sub x}CuO{sub 4}, an electron-doped high temperature superconducting cuprate (HTSC), near optimal doping at x = 0.155 were measured via angle resolved photoemission (ARPES). We report a renormalization feature in the self energy ('kink') in the band dispersion at {approx} 50-60 meV present in nodal and antinodal cuts across the Fermi surface. Specifically, while the kink had been seen in the antinodal region, it is now observed also in the nodal region, reminiscent of what has been observed in hole-doped cuprates.

  4. Neutron diffraction study of magnetic field induced behavior in the heavy Fermion Ce3Co4Sn13

    SciTech Connect (OSTI)

    Christianson, Andrew D [ORNL; Goremychkin, E. A. [ISIS Facility, Rutherford Appleton Laboratory; Gardner, J. S. [Indiana University; Kang, H. J. [National Institute of Standards and Technology (NIST); Chung, J.-H. [National Institute of Standards and Technology (NIST); Manuel, P. [ISIS Facility, Rutherford Appleton Laboratory; Thompson, J. D. [Los Alamos National Laboratory (LANL); Sarrao, J. L. [Los Alamos National Laboratory (LANL); Lawrence, J. M. [University of California, Irvine

    2008-01-01T23:59:59.000Z

    The specific heat of Ce3Co4Sn13 exhibits a crossover from heavy Fermion behavior with antiferromagnetic correlations at low field to single impurity Kondo behavior above 2 T. We have performed neutron diffraction measurements in magnetic fields up to 6 Tesla on single crystal samples. The (001) position shows a dramatic increase in intensity in field which appears to arise from static polarization of the 4f level and which at 0.14 K also exhibits an anomaly near 2T reflecting the crossover to single impurity behavior.

  5. Synthesis and crystal structure of the isotypic rare earth thioborates Ce[BS{sub 3}], Pr[BS{sub 3}], and Nd[BS{sub 3}

    SciTech Connect (OSTI)

    Hunger, Jens; Borna, Marija [Max Planck Institute for Chemical Physics of Solids, Noethnitzer Strasse 40, D-01187 Dresden (Germany); Kniep, Ruediger, E-mail: kniep@cpfs.mpg.d [Max Planck Institute for Chemical Physics of Solids, Noethnitzer Strasse 40, D-01187 Dresden (Germany)

    2010-03-15T23:59:59.000Z

    The orthothioborates Ce[BS{sub 3}], Pr[BS{sub 3}] and Nd[BS{sub 3}] were prepared from mixtures of the rare earth (RE) metals together with amorphous boron and sulfur summing up to the compositions CeB{sub 3}S{sub 6}, PrB{sub 5}S{sub 9} and NdB{sub 3}S{sub 6}. The following preparation routes were used: solid state reactions with maximum temperatures of 1323 K and high-pressure high-temperature syntheses at 1173 K and 3 GPa. Pr[BS{sub 3}] and Nd[BS{sub 3}] were also obtained from rare earth chlorides RECl{sub 3} and sodium thioborate Na{sub 2}B{sub 2}S{sub 5} by metathesis type reactions at maximum temperatures of 1073 K. The crystal structure of the title compounds was determined from X-ray powder diffraction data. The thioborates are isotypic and crystallize in the orthorhombic spacegroup Pna2{sub 1} (No. 33; Z=4; Ce: a=7.60738(6)A, b=6.01720(4)A, c=8.93016(6)A; Pr: a=7.56223(4)A, b=6.00876(2)A, c=8.89747(4)A; Nd: a=7.49180(3)A, b=6.00823(2)A, c=8.86197(3)A) . The crystal structures contain isolated [BS{sub 3}]{sup 3-} groups with boron in trigonal-planar coordination. The sulfur atoms form the vertices of undulated kagome nets, which are stacked along [100] according to the sequence ABAB. Within these nets every second triangle is occupied by boron and the large hexagons are centered by rare earth ions, which are surrounded by overall nine sulfur species. - Abstract: Graphical Abstract Legend (TOC Figure): Table of Contents Figure The isotypic orthothioborates Ce[BS{sub 3}], Pr[BS{sub 3}] and Nd[BS{sub 3}] were prepared using different preparation routes. The crystal structure of the title compounds was determined from X-ray powder diffraction data. The crystal structures contain isolated [BS{sub 3}]{sup 3-} groups with boron in trigonal-planar coordination. The sulfur atoms form the vertices of corrugated kagome nets (sketched with blue dotted lines), which are stacked along [100] according to the sequence ABAB. Within these nets every second triangle is occupied by boron and the large hexagons are centered by rare earth ions, which are surrounded by overall nine sulfur species.

  6. A novel yellow-emitting SrAlSi{sub 4}N{sub 7}:Ce{sup 3+} phosphor for solid state lighting: Synthesis, electronic structure and photoluminescence properties

    SciTech Connect (OSTI)

    Ruan, Jian [Sialon Group, Sialon Unit, Environment and Energy Materials Division, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Laboratory of Glasses and Nanostructured Functional Materials, 122 Luoshi Road, Wuhan, Hubei 430070 (China); Xie, Rong-Jun, E-mail: Xie.Rong-Jun@nims.go.jp [Sialon Group, Sialon Unit, Environment and Energy Materials Division, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Funahashi, Shiro [Sialon Group, Sialon Unit, Environment and Energy Materials Division, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Tanaka, Yoshinori [Green Computational Materials Science Group, Global Research Center for Environment and Energy based on Nanomaterials Science (Green), National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0044 (Japan); Takeda, Takashi; Suehiro, Takayuki; Hirosaki, Naoto [Sialon Group, Sialon Unit, Environment and Energy Materials Division, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Li, Yuan-Qiang [Dow Electronic Materials, 201 Washington Road, Princeton, NJ 08540 (United States)

    2013-12-15T23:59:59.000Z

    Ce{sup 3+}-doped and Ce{sup 3+}/Li{sup +}-codoped SrAlSi{sub 4}N{sub 7} phosphors were synthesized by gas pressure sintering of powder mixtures of Sr{sub 3}N{sub 2}, AlN, ?-Si{sub 3}N{sub 4}, CeN and Li{sub 3}N. The phase purity, electronic crystal structure, photoluminescence properties of SrAlSi{sub 4}N{sub 7}:Ce{sup 3+}(Ce{sup 3+}/Li{sup +}) were investigated in this work. The band structure calculated by the DMol{sup 3} code shows that SrAlSi{sub 4}N{sub 7} has a direct band gap of 3.87 eV. The single crystal analysis of Ce{sup 3+}-doped SrAlSi{sub 4}N{sub 7} indicates a disordered Si/Al distribution and nitrogen vacnacy defects. SrAlSi{sub 4}N{sub 7} was identified as a major phase of the fired powders, and Sr{sub 5}Al{sub 5}Si{sub 21}N{sub 35}O{sub 2} and AlN as minor phases. Both Ce{sup 3+} and Ce{sup 3+}/Li{sup +} doped SrAlSi{sub 4}N{sub 7} phosphors can be efficiently excited by near-UV or blue light and show a broadband yellow emission peaking around 565 nm. A highest external quantum efficiency of 38.3% under the 450 nm excitation was observed for the Ce{sup 3+}/Li{sup +}-doped SrAlSi{sub 4}N{sub 7} (5 mol%). A white light LED lamp with color temperature of 6300 K and color rendering index of Ra=78 was achieved by combining Sr{sub 0.97}Al{sub 1.03}Si{sub 3.997}N/94/maccounttest14=t0005{sub 1}8193 {sub 7}:Ce{sup 3+}{sub 0.03} with a commercial blue InGaN chip. It indicates that SrAlSi{sub 4}N{sub 7}:Ce{sup 3+} is a promising yellow emitting down-conversion phosphor for white LEDs. - Graphical abstract: One-phosphor converted white light-emitting diode (LED) was fabricated by combining a blue LED chip and a yellow-emitting SrAlSi4N7:Ce{sup 3+} phosphor (see inset), which has the color rendering index of 78 and color temperature of 6300 K. - Highlights: • We reported a new yellow nitride phosphor suitable for solid state lighting. • We solved the crystal structure and evidenced a disordered Si/Al distribution. • We fabricated a high color rendering white LEDs by using a single SrAlSi4N7:Ce.

  7. Insensitivity of the pressure dependences of characteristic energy scales in Ce1–xRxCoIn? (R=Yb,Y,Gd) to the electronic configuration of the rare-earth ion

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

    White, B. D.; Hamlin, J. J.; Huang, K.; Shu, L.; Lum, I. K.; Baumbach, R. E.; Janoschek, M.; Maple, M. B.

    2012-09-01T23:59:59.000Z

    Cooperative Ce and Yb valence fluctuations have recently been proposed as the mechanism responsible for stabilizing correlated electron phenomena in Ce??xYbxCoIn? over an unexpectedly large range of concentrations. In order to better understand the origins and character of this stability, we have measured the effect of applied pressure on relevant energy scales such as the superconducting critical (Tc) and Kondo-lattice coherence (T*) temperatures of Ce??xRxCoIn? with R=Yb, Y, and Gd. Electrical resistivity measurements were performed under applied pressure on samples doped with intermediate-valent Yb and stable-valent Gd and Y, and the responses of Tc and T* to increased pressure in these systems are compared. The character of Tc(P) and T*(P) in Ce??xRxCoIn? depends only on their respective ambient-pressure values Tc(0) and T*(0), independent of the electronic configuration of R or concentration x. The consequences of this result are discussed within the context of possible cooperative valence fluctuations in Ce??xYbxCoIn?.

  8. Insensitivity of the pressure dependences of characteristic energy scales in Ce1–xRxCoIn? (R=Yb,Y,Gd) to the electronic configuration of the rare-earth ion

    SciTech Connect (OSTI)

    White, B. D.; Hamlin, J. J.; Huang, K.; Shu, L.; Lum, I. K.; Baumbach, R. E.; Janoschek, M.; Maple, M. B.

    2012-09-01T23:59:59.000Z

    Cooperative Ce and Yb valence fluctuations have recently been proposed as the mechanism responsible for stabilizing correlated electron phenomena in Ce??xYbxCoIn? over an unexpectedly large range of concentrations. In order to better understand the origins and character of this stability, we have measured the effect of applied pressure on relevant energy scales such as the superconducting critical (Tc) and Kondo-lattice coherence (T*) temperatures of Ce??xRxCoIn? with R=Yb, Y, and Gd. Electrical resistivity measurements were performed under applied pressure on samples doped with intermediate-valent Yb and stable-valent Gd and Y, and the responses of Tc and T* to increased pressure in these systems are compared. The character of Tc(P) and T*(P) in Ce??xRxCoIn? depends only on their respective ambient-pressure values Tc(0) and T*(0), independent of the electronic configuration of R or concentration x. The consequences of this result are discussed within the context of possible cooperative valence fluctuations in Ce??xYbxCoIn?.

  9. Insensitivity of the pressure dependences of characteristic energy scales in Ce1–xRxCoIn? (R=Yb,Y,Gd) to the electronic configuration of the rare-earth ion

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

    White, B. D.; Hamlin, J. J.; Huang, K.; Shu, L.; Lum, I. K.; Baumbach, R. E.; Janoschek, M.; Maple, M. B.

    2012-09-01T23:59:59.000Z

    Cooperative Ce and Yb valence fluctuations have recently been proposed as the mechanism responsible for stabilizing correlated electron phenomena in Ce??xYbxCoIn? over an unexpectedly large range of concentrations. In order to better understand the origins and character of this stability, we have measured the effect of applied pressure on relevant energy scales such as the superconducting critical (Tc) and Kondo-lattice coherence (T*) temperatures of Ce??xRxCoIn? with R=Yb, Y, and Gd. Electrical resistivity measurements were performed under applied pressure on samples doped with intermediate-valent Yb and stable-valent Gd and Y, and the responses of Tc and T* to increased pressure inmore »these systems are compared. The character of Tc(P) and T*(P) in Ce??xRxCoIn? depends only on their respective ambient-pressure values Tc(0) and T*(0), independent of the electronic configuration of R or concentration x. The consequences of this result are discussed within the context of possible cooperative valence fluctuations in Ce??xYbxCoIn?.« less

  10. Effect of Tb{sup 3+} concentration on the optical and vibrational properties of YBO{sub 3} tri-doped with Eu{sup 3+}, Ce{sup 3+}, and Tb{sup 3+}

    SciTech Connect (OSTI)

    Sohal, S.; Hassanzadeh, E.; Huang, J. Y. [Department of Physics, Texas Tech University and Nano Tech Center, Lubbock, Texas 79409 (United States); Nazari, M.; Holtz, M., E-mail: mark.holtz@txstate.edu [Department of Physics, Texas State University, San Marcos, Texas 78666 (United States); Zhang, X.; Chaudhuri, J. [Department of Mechanical Engineering, Texas Tech University, Lubbock, Texas 79409 (United States); Kuryatkov, V. V. [Department of Electrical and Computer Engineering and Nano Tech Center, Texas Tech University, Lubbock, Texas 79409 (United States); Hope-Weeks, L. J. [Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409 (United States)

    2014-05-14T23:59:59.000Z

    Structural and optical studies are reported of yttrium orthoborate YBO{sub 3} when tri-doped with Eu{sup 3+}, Ce{sup 3+}, and Tb{sup 3+}, focusing on the role of terbium concentration. Incorporation of Tb{sup 3+} affects emission properties for photoluminescence (PL) excited by near ultraviolet light. For constant cerium and europium concentrations, increasing the Tb{sup 3+} results in diminished PL from the Ce{sup 3+} and Tb{sup 3+} color centers. Simultaneously, the PL excitation bands related to both Ce{sup 3+} and Tb{sup 3+} increase in intensity for red emission from the Eu{sup 3+}. Results are consistent with a Ce{sup 3+}???(Tb{sup 3+}){sub n}???Eu{sup 3+} energy transfer scheme, where (Tb{sup 3+}){sub n} denotes a chain incorporating n terbium ions. A high red to orange PL intensity ratio is obtained, ranging from 1.34 to 2.09. Raman vibrational bands show a systematic change, with Tb{sup 3+} concentration, in the B{sub 3}O{sub 9} ring terminal oxygen bending mode coordinated with the yttrium site where dopant ions substitute. The structural changes are interpreted as variations in the local neighborhood of these sites in the YBO{sub 3}:Ce{sup 3+},Tb{sup 3+},Eu{sup 3+} crystal structure.

  11. Level structure of the odd mass Pr isotopes. III. Levels of [sup 147]Pr[sub 88] populated in the beta decay of 56-s [sup 147]Ce

    SciTech Connect (OSTI)

    Mantica, P.F. (Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742 (United States) UNISOR, Oak Ridge Institute for Science Education, Oak Ridge, Tennessee 37831 (United States)); Robertson, J.D.; Baum, E.M.; Walters, W.B. (Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742 (United States))

    1993-10-01T23:59:59.000Z

    The structure of [sup 147]Pr has been investigated by performing measurements of [gamma]-ray and conversion-electron singles and [gamma][gamma] coincidence spectra of mass separated sources of 56-s [sup 147]Ce. The proposed level scheme extends the known structure of [sup 147]Pr to an energy of 2.2 MeV and includes several levels below 1.2 MeV that have not been identified in previous decay studies of [sup 147]Ce. Measurement of the conversion coefficients for several transitions has led to the assignment of negative parity to the levels at 362, 452, 467, and 608 keV in [sup 147]Pr, which show properties similar to low-energy negative-parity states identified in [sup 145]Pr[sub 86], [sup 145]La[sub 88], and [sup 149]Pm[sub 88]. The presence of low-energy negative-parity states suggests that configurations having significantly different deformation, related to the highly deformed region above [ital N]=90 and/or to the reflection asymmetric region identified around [sup 145]Ba, may manifest themselves at low energy in these nuclides.

  12. Nodal to nodeless superconducting energy gap structure change concomitant with Fermi surface reconstruction in the heavy-fermion CeCoIn?

    SciTech Connect (OSTI)

    Kim, Hyunsoo [Iowa State Univ., Ames, IA (United States); Petrovic, C. [Brookhaven National Lab. (BNL), Upton, NY (United States); Tanatar, M. A. [Iowa State Univ., Ames, IA (United States); Flint, R. [Iowa State Univ., Ames, IA (United States); Hu, Rongwei [Brookhaven National Lab. (BNL), Upton, NY (United States); White, B. D. [Univ. of California, San Diego, La Jolla, CA (United States); Lum, I. K. [Univ. of California, San Diego, La Jolla, CA (United States); Maple, M. B. [Univ. of California, San Diego, La Jolla, CA (United States); Prozorov, R. [Iowa State Univ., Ames, IA (United States)

    2015-01-01T23:59:59.000Z

    The London penetration depth ?(T) was measured in single crystals of Ce1?xRxCoIn?, R=La, Nd, and Yb down to Tmin ? 50??mK (Tc/Tmin ~50) using a tunnel-diode resonator. In the cleanest samples ??(T) is best described by the power law, ??(T) ? Tn, with n ~ 1, consistent with line nodes. Substitutions of Ce with La, Nd, and Yb lead to similar monotonic suppressions of Tc, however, the effects on ??(T) differ. While La and Nd dopings lead to increase of the exponent n and saturation at n ~ 2, as expected for a dirty nodal superconductor, Yb doping leads to n > 3, suggesting a change from nodal to nodeless superconductivity. This superconducting gap structure change happens in the same doping range where changes of the Fermi surface topology were reported, implying that the nodal structure and Fermi surface topology are closely linked.

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

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

    1,"William F Wyman","Petroleum","FPL Energy Wyman LLC",821.9 2,"Westbrook Energy Center Power Plant","Natural Gas","Westbrook Energy Center",506 3,"Maine Independence...

  14. Tracking Hemicellulose and Lignin Deconstruction During Hydrothermal Pretreatment of Biomass

    E-Print Network [OSTI]

    McKenzie, Heather Lorelei

    2012-01-01T23:59:59.000Z

    5.13c. (9) Wyman C. Ethanol Fuel in Encyclopedia of Energy;10): 1865-1871. (6) Wyman C. Ethanol Fuel in Encyclopedia ofscenario for cellulosic ethanol fuel production, and speaks

  15. RESEARCH Open Access Composition and hydrothermal pretreatment and

    E-Print Network [OSTI]

    California at Riverside, University of

    of the article DeMartini and Wyman Biotechnology for Biofuels 2011, 4:52 http://www.biotechnologyfo that are * Correspondence: charles.wyman@ucr.edu 1 Chemical and Environmental Engineering Department, University

  16. Solid state reactions of nanocrystalline Ce{sub 0.5}Yb{sub 0.5}O{sub 1.75} mixed oxide with high surface area silica in oxidizing and reducing atmosphere

    SciTech Connect (OSTI)

    Malecka, Malgorzata A. [Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wroclaw 2 (Poland); Kepinski, Leszek, E-mail: L.Kepinski@int.pan.wroc.pl [Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wroclaw 2 (Poland)

    2012-08-15T23:59:59.000Z

    The interaction of nanocrystalline Ce{sub 0.5}Yb{sub 0.5}O{sub 1.75} mixed oxide with a high surface amorphous silica support in an oxidizing and reducing atmosphere was studied by XRD, HRTEM, SAED, SEM and BET techniques. The Ce{sub 0.5}Yb{sub 0.5}O{sub 1.75}-SiO{sub 2} system shows very high structural and size stability in the oxidizing atmosphere up to 1000 Degree-Sign C, but in hydrogen spreading of the oxide onto silica occurs at temperatures above 800 Degree-Sign C. In the oxidizing atmosphere stability of the mixed oxide is limited by extraction of ytterbium from the oxide driven by a tendency to form ytterbium silicates. A new polymorph of Yb silicate, isomorphic with y-Y{sub 2}Si{sub 2}O{sub 7} (yttrialite), has been identified in the samples containing the mixed Ce-Yb oxide. The absence of y-Yb{sub 2}Si{sub 2}O{sub 7} silicate in the Yb{sub 2}O{sub 3}-SiO{sub 2} samples treated in similar conditions indicates that Ce{sup 4+} ions are needed to stabilize the structure. - Graphical abstract: Structure evolution of nano-Ce{sub 0.5}Yb{sub 0.5}O{sub 1.75}-SiO{sub 2} in air and in H{sub 2}. Highlights: Black-Right-Pointing-Pointer Nano-Ce{sub 0.50}Yb{sub 0.50}O{sub 1.75} on SiO{sub 2} is stable in air up to 1000 Degree-Sign C but spreads in hydrogen at 800 Degree-Sign C. Black-Right-Pointing-Pointer Formation of Yb silicates determines the stability of Ce{sub 0.50}Yb{sub 0.50}O{sub 1.75} at high temperatures. Black-Right-Pointing-Pointer New, y-Yb{sub 2}Si{sub 2}O{sub 7} silicate (yttrialite type) forms in Ce{sub 0.5}Yb{sub 0.5}O{sub 1.75}-SiO{sub 2} in H{sub 2} at 1100 Degree-Sign C.

  17. R{sub 4}Ir{sub 13}Ge{sub 9} (R=La, Ce, Pr, Nd, Sm) and RIr{sub 3}Ge{sub 2} (R=La, Ce, Pr, Nd): Crystal structures with nets of Ir atoms

    SciTech Connect (OSTI)

    Yarema, Maksym [Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Kyryla i Mefodiya Str, 6, UA-79005 Lviv (Ukraine) [Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Kyryla i Mefodiya Str, 6, UA-79005 Lviv (Ukraine); Swiss Federal Laboratories for Materials Science and Technology (EMPA), Ueberlandstr. 129, CH-8600 Duebendorf (Switzerland); Zaremba, Oksana; Gladyshevskii, Roman [Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Kyryla i Mefodiya Str, 6, UA-79005 Lviv (Ukraine)] [Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Kyryla i Mefodiya Str, 6, UA-79005 Lviv (Ukraine); Hlukhyy, Viktor, E-mail: viktor.hlukhyy@lrz.tu-muenchen.de [Department Chemie, Technische Universitaet Muenchen, Lichtenbergstr. 4, D-85747 Garching (Germany)] [Department Chemie, Technische Universitaet Muenchen, Lichtenbergstr. 4, D-85747 Garching (Germany); Faessler, Thomas F. [Department Chemie, Technische Universitaet Muenchen, Lichtenbergstr. 4, D-85747 Garching (Germany)] [Department Chemie, Technische Universitaet Muenchen, Lichtenbergstr. 4, D-85747 Garching (Germany)

    2012-12-15T23:59:59.000Z

    The crystal structures of the new ternary compounds Sm{sub 4}Ir{sub 13}Ge{sub 9} and LaIr{sub 3}Ge{sub 2} were determined and refined on the basis of single-crystal X-ray diffraction data. They belong to the Ho{sub 4}Ir{sub 13}Ge{sub 9} (oP52, Pmmn) and CeCo{sub 3}B{sub 2} (hP5, P6/mmm) structure types, respectively. The formation of isotypic compounds R{sub 4}Ir{sub 13}Ge{sub 9} with R=La, Ce, Pr, Nd, and RIr{sub 3}Ge{sub 2} with R=Ce, Pr, Nd, was established by powder X-ray diffraction. The RIr{sub 3}Ge{sub 2} (R=La, Ce, Pr, Nd) compounds exist only in as-cast samples and decompose during annealing at 800 Degree-Sign C with the formation of R{sub 4}Ir{sub 13}Ge{sub 9}. The structure of Sm{sub 4}Ir{sub 13}Ge{sub 9} contains intersecting, slightly puckered nets of Ir atoms (4{sup 4})(4{sup 3}.6){sub 2}(4.6{sup 2}){sub 2} and (4{sup 4}){sub 2}(4{sup 3}.6){sub 4}(4.6{sup 2}){sub 2} that are perpendicular to [0 1 1] as well as to [0 -1 1] and [0 0 1]. The Ir atoms are surrounded by Ge atoms that form tetrahedra or square pyramids (where the layers intersect). The Sm and additional Ir atoms (in trigonal-planar coordination) are situated in channels along [1 0 0] (short translation vector). In the structure of LaIr{sub 3}Ge{sub 2} the Ir atoms form planar Kagome nets (3.6.3.6) perpendicular to [0 0 1]. These nets alternate along the short translation vector with layers of La and Ge atoms. - Graphical abstract: The crystal structures contain the nets of Ir atoms as main structural motif: R{sub 4}Ir{sub 13}Ge{sub 9} contains intersecting slightly puckered nets of Ir atoms, whereas in the structure of RIr{sub 3}Ge{sub 2} the Ir atoms form planar Kagome nets. Highlights: Black-Right-Pointing-Pointer The Ir-rich ternary germanides R{sub 4}Ir{sub 13}Ge{sub 9} (R=La, Ce, Pr, Nd, Sm) and RIr{sub 3}Ge{sub 2} (R=La, Ce, Pr, Nd) have been synthesized. Black-Right-Pointing-Pointer The RIr{sub 3}Ge{sub 2} compounds exist only in as-cast samples and decompose during annealing at 800 Degree-Sign C with the formation of R{sub 4}Ir{sub 13}Ge{sub 9}. Black-Right-Pointing-Pointer The structure of R{sub 4}Ir{sub 13}Ge{sub 9} contains intersecting slightly puckered nets of Ir atoms. Black-Right-Pointing-Pointer In the structure of RIr{sub 3}Ge{sub 2} the Ir atoms form planar Kagome nets.

  18. RESEARCH Open Access Supplementation with xylanase and b-xylosidase

    E-Print Network [OSTI]

    California at Riverside, University of

    is available at the end of the article Qing and Wyman Biotechnology for Biofuels 2011, 4:18 http.wyman@ucr.edu 1 Center for Environmental Research and Technology, Bourns College of Engineering, University://www.biotechnologyforbiofuels.com/content/4/1/18 © 2011 Qing and Wyman; licensee BioMed Central Ltd. This is an Open Access article

  19. 15N2 formation and fast oxygen isotope exchange during pulsed 15N18O exposure of MnOx/CeO2

    SciTech Connect (OSTI)

    Kwak, Ja Hun; Szanyi, Janos

    2014-12-23T23:59:59.000Z

    Pulsing 15N18O onto an annealed 1% Mn16Ox/Ce16O2 catalyst resulted in very fast oxygen isotope exchange and 15N2 formation at 295 K. In the 1st 15N18O pulse, due to the presence of large number of surface oxygen defects, extensive 15N218O and 15N2 formations were observed. In subsequent pulses oxygen isotope exchange dominated as a result of highly labile oxygen in the oxide. We gratefully acknowledge the US Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy/Vehicle Technologies Program for the support of this work. The research described in this paper was performed at the Environmental Molecular Sciences Laboratory (EMSL), a national scientific user facility sponsored by the DOE’s Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory (PNNL). PNNL is operated for the US DOE by Battelle.

  20. Dielectric relaxation from a network of charged defects in dilute CeO/sub 2/:Y/sub 2/O/sub 3/ solid solutions

    SciTech Connect (OSTI)

    Wang, D.Y.; Nowick, A.S.

    1981-01-01T23:59:59.000Z

    Solid solutions of Y/sub 2/O/sub 3/ in CeO/sub 2/ are examined by the thermal depolarization (or ITC) method of dielectric relaxation. For concentrations less than or equal to 1 m/o Y/sub 2/O/sub 3/, two peaks are observed. The lower temperature peak, Peak 1, is interpreted as due to the relaxation of nn YV/sub 0/ pairs (where V/sub 0/ = oxygen vacancy, and is analogous to the well-known CaV/sub 0/ pair obtained with Ca/sup 2 +/ doping. The upper peak, Peak 2, on the other hand, is a broad peak whose position is a function of concentration. It is not due to simple dipoles, but originates in the network of alternately charged (YV/sub 0/)/sup ./ pairs and isolated Y' defects by redistribution of vacancies.

  1. Electronic structure of Ce?RhIn?: A two-dimensional heavy-fermion system studied by angle-resolved photoemission spectroscopy

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

    Jiang, Rui; Petrovic, C.; Mou, Daixing; Liu, Chang; Zhao, Xin; Yao, Yongxin; Ryu, Hyejin; Ho, Kai -Ming; Kaminski, Adam

    2015-04-01T23:59:59.000Z

    We use angle-resolved photoemission spectroscopy (ARPES) to study the 2D heavy fermion superconductor, Ce?RhIn?. The Fermi surface is rather complicated and consists of several hole and electron pockets with one of the sheets displaying strong nesting properties with a q-vector of (0.32, 0.32) ?/a. We do not observe kz dispersion of the Fermi sheets, which is consistent with the expected 2D character of the electronic structure. Comparison of the ARPES data to band structure calculations suggests that a localized picture of the f-electrons works best. While there is some agreement in the overall band dispersion and location of the Fermimore »sheets, the model does not reproduce all observed bands and is not completely accurate for those it does. Our data paves the way for improving the band structure calculations and the general understanding of the transport and thermodynamical properties of this material.« less

  2. Structure and magnetic properties of RE{sub 2}CuIn{sub 3} (RE=Ce, Pr, Nd, Sm and Gd)

    SciTech Connect (OSTI)

    Tyvanchuk, Yuriy B. [Faculty of Chemistry, Ivan Franko National University of Lviv, Kyryla and Mephodiya Street 6, 79005 Lviv (Ukraine)], E-mail: yutyv@franko.lviv.ua; Szytula, Andrzej; Zarzycki, Arkadiusz [Marian Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Krakow (Poland); Rodewald, Ute Ch. [Institut fuer Anorganische und Analytische Chemie, Universitaet Muenster, Corrensstrasse 30, D-48149 Muenster (Germany); Kalychak, Yaroslav M. [Faculty of Chemistry, Ivan Franko National University of Lviv, Kyryla and Mephodiya Street 6, 79005 Lviv (Ukraine); Poettgen, Rainer [Institut fuer Anorganische und Analytische Chemie, Universitaet Muenster, Corrensstrasse 30, D-48149 Muenster (Germany)], E-mail: pottgen@uni-muenster.de

    2008-12-15T23:59:59.000Z

    The ternary copper indides RE{sub 2}CuIn{sub 3}{identical_to}RECu{sub 0.5}In{sub 1.5} (RE=Ce, Pr, Nd, Sm and Gd) were synthesized from the elements in sealed tantalum tubes in an induction furnace. They crystallize with the CaIn{sub 2}-type structure, space group P6{sub 3}/mmc, with a statistical occupancy of copper and indium on the tetrahedral substructure. These indides show homogeneity ranges RECu{sub x}In{sub 2-x}. Single crystal structure refinements were performed for five crystals: CeCu{sub 0.66}In{sub 1.34} (a=479.90(7) pm, c=768.12(15) pm), PrCu{sub 0.52}In{sub 1.48} (a=480.23(7) pm, c=759.23(15) pm), NdCu{sub 0.53}In{sub 1.47} (a=477.51(7) pm, c=756.37(15) pm), SmCu{sub 0.46}In{sub 1.54} (a=475.31(7) pm, c=744.77(15) pm), and GdCu{sub 0.33}In{sub 1.67} (a=474.19(7), c=737.67(15) pm). Temperature-dependent susceptibility measurements show antiferromagnetic ordering at T{sub N}=4.7 K for Pr{sub 2}CuIn{sub 3} and Nd{sub 2}CuIn{sub 3} and 15 K for Sm{sub 2}CuIn{sub 3}. Fitting of the susceptibility data of the samarium compound revealed an energy gap {delta}E=39.7(7) K between the ground and the first excited levels. - Graphical abstract: The CaIn{sub 2}-type structure of Sm{sub 2}CuIn{sub 3}.

  3. Gorur D, Rasmussen CE. Dirichlet process Gaussian mixture models: Choice of the base distribution. JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY 25(4): 615626 July 2010/DOI 10.1007/s11390-010-1051-1

    E-Print Network [OSTI]

    Edinburgh, University of

    G¨or¨ur D, Rasmussen CE. Dirichlet process Gaussian mixture models: Choice of the base distribution Rasmussen2,3 1 Gatsby Computational Neuroscience Unit, University College London, London WC1N 3AR, U.K. 2 Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, U.K. 3 Max Planck Institute

  4. Evidence for anisotropic triplet superconductor order parameter in half metallic ferromagnetic La_0.7Ca_0.3MnO_3 proximity coupled to superconducting Pr_1.85Ce_0.15CuO_4

    E-Print Network [OSTI]

    Kalcheim, Y.; Millo, O.; Egilmez, M.; Robinson, J. W. A.; Blamire, M. G.

    2012-03-07T23:59:59.000Z

    Scanning tunneling spectroscopy measurements performed on La_0.7Ca_0.3MnO_3 (LCMO) films epitaxially grown on Pr_1.85Ce_0.15CuO_4 (PCCO) reveal localized penetration of superconductivity into the LCMO up to distances much larger than is possible...

  5. Citer ce texte comme : PTILLON J.-M. (2012) Historique des fouilles de R. de Saint-Prier dans les sites palolithiques des gorges de la Save (Lespugue, Haute-Garonne).

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    2012-01-01T23:59:59.000Z

    dans les sites paléolithiques des gorges de la Save (Lespugue, Haute-Garonne). Préhistoire du Sud gorges de la Save (Lespugue, Haute-Garonne) Jean-Marc Pétillon CNRS, laboratoire TRACES (UMR 5608) Maison les sites paléolithiques des gorges de la Save (Lespugue, Haute-Garonne). Ce texte s

  6. An In-Situ XAS Study of the Structural Changes in a CuO-CeO2/Al2O3 Catalyst during Total Oxidation of Propane

    SciTech Connect (OSTI)

    Silversmith, Geert; Poelman, Hilde; Poelman, Dirk; Gryse, Roger de [Ghent University, Department of Solid State Sciences, Krijgslaan 281 S1, B-9000 Gent (Belgium); Olea, Maria; Balcaen, Veerle; Heynderickx, Philippe; Marin, Guy B. [Ghent University, Laboratorium voor Petrochemische Techniek, Krijgslaan 281 S5, B-9000 Gent (Belgium)

    2007-02-02T23:59:59.000Z

    A CuOx-CeOx/Al2O3 catalyst was studied with in-situ transmission Cu K XAS for the total oxidation of propane as model reaction for the catalytic elimination of volatile organic compounds. The local Cu structure was determined for the catalyst as such, after pre-oxidation and after reduction with propane. The catalyst as such has a local CuO structure. No structural effect was observed upon heating in He up to 600 deg. C or after pre-oxidation at 150 deg. C. A full reduction of the Cu2+ towards metallic Cu0 occurred, when propane was fed to the catalyst. The change in local Cu structure during propane reduction was followed with a time resolution of 1 min. The {chi}(k) scans appeared as linear combinations of start and end spectra, CuO and Cu structure, respectively. However, careful examination of the XANES edge spectra indicates the presence of a small amount of additional Cu1+ species.

  7. Quantum Critical Fluctuations in the Heavy fermion compound Ce(Ni0.935Pd0.065)2Ge2

    SciTech Connect (OSTI)

    C. H. Wang; L. Poudel; A. E. Taylor; J. M. Lawrence; A. D. Christianson; S. Chang; J. A. Rodriguez-Rivera; J. W. Lynn; A. A. Podlesnyak; G. Ehlers; R. E. Baumbach; E. D. Bauer; K. Gofryk; F. Ronning; K. J. McClellan; J. D. Thompson

    2014-12-01T23:59:59.000Z

    Electric resistivity, specific heat, magnetic susceptibility, and inelastic neutron scattering experi- ments were performed on a single crystal of the heavy fermion compound Ce(Ni0.935Pd0.065)2Ge2 in order to study the spin fluctuations near an antiferromagnetic (AF) quantum critical point (QCP). The resistivity and the specific heat coefficient for T = 1 K exhibit the power law behavior expected for a 3D itinerant AF QCP (?(T) ~ T^3/2 and ?(T) ~ ?0 -bT^1/2). However, for 2 = T = 10 K, the susceptibility and specific heat vary as logT and the resistivity varies linearly with temperature. Furthermore, despite the fact that the resistivity and specific heat exhibit the non-Fermi liquid behavior expected at a QCP, the correlation length, correlation time, and staggered susceptibility of the spin fluctuations remain finite at low temperature. We suggest that these deviations from the divergent behavior expected for a QCP may result from alloy disorder.

  8. Improvement of {gamma}-ray energy resolution of LaBr{sub 3}:Ce{sup 3+} scintillation detectors by Sr{sup 2+} and Ca{sup 2+} co-doping

    SciTech Connect (OSTI)

    Alekhin, M. S.; Haas, J. T. M. de; Khodyuk, I. V.; Dorenbos, P. [Department of Radiation Science and Technology, Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, 2629 JB Delft (Netherlands)] [Department of Radiation Science and Technology, Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, 2629 JB Delft (Netherlands); Kraemer, K. W. [Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern (Switzerland)] [Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern (Switzerland); Menge, P. R. [Saint-Gobain Crystals, 17900 Great Lakes Parkway, Hiram, Ohio 44234 (United States)] [Saint-Gobain Crystals, 17900 Great Lakes Parkway, Hiram, Ohio 44234 (United States); Ouspenski, V. [Saint Gobain Recherche, 39, Quai Lucien Lefranc, 93303 Aubervilliers (France)] [Saint Gobain Recherche, 39, Quai Lucien Lefranc, 93303 Aubervilliers (France)

    2013-04-22T23:59:59.000Z

    Commercially available LaBr{sub 3}:5% Ce{sup 3+} scintillators show with photomultiplier tube readout about 2.7% energy resolution for the detection of 662 keV {gamma}-rays. Here we will show that by co-doping LaBr{sub 3}:Ce{sup 3+} with Sr{sup 2+} or Ca{sup 2+} the resolution is improved to 2.0%. Such an improvement is attributed to a strong reduction of the scintillation light losses that are due to radiationless recombination of free electrons and holes during the earliest stages (1-10 ps) inside the high free charge carrier density parts of the ionization track.

  9. Sr{sub 3}Al{sub 2}O{sub 5}Cl{sub 2}:Ce{sup 3+},Eu{sup 2+}: A potential tunable yellow-to-white-emitting phosphor for ultraviolet light emitting diodes

    SciTech Connect (OSTI)

    Song Yanhua; Jia Guang; Yang Mei; Huang Yeju; You Hongpeng; Zhang Hongjie [State Key laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 (China) and Graduate University of the Chinese Academy of Sciences, Beijing 100049 (China)

    2009-03-02T23:59:59.000Z

    The Sr{sub 3}Al{sub 2}O{sub 5}Cl{sub 2}:Ce{sup 3+},Eu{sup 2+} phosphors were prepared by solid state reaction. The obtained phosphors exhibit a strong absorption in the UV-visible region and have two intense emission bands at 444 and 609 nm. The energy transfer from the Ce{sup 3+} to Eu{sup 2+} ions was observed, and the critical distance has been estimated to be about 24.5 A by spectral overlap method. Furthermore, the developed phosphors can generate lights from yellow-to-white region under the excitation of UV radiation by appropriately tuning the activator content, indicating that they have potential applications as an UV-convertible phosphor for white light emitting diodes.

  10. Crystal structure, magnetism and transport properties of Ce{sub 3}Ni{sub 25.75}Ru{sub 3.16}Al{sub 4.1}B{sub 10}

    SciTech Connect (OSTI)

    Janka, Oliver [Department of Chemistry, University of California, One Shields Ave, Davis, CA 95616 (United States); Baumbach, Ryan E.; Thompson, Joe D. [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Bauer, Eric D., E-mail: edbauer@lanl.gov [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Kauzlarich, Susan M., E-mail: smkauzlarich@ucdavis.edu [Department of Chemistry, University of California, One Shields Ave, Davis, CA 95616 (United States)

    2013-09-15T23:59:59.000Z

    Single crystals of Ce{sub 3}Ni{sub 25.75}Ru{sub 3.16}Al{sub 4.1}B{sub 10} were obtained from a process in which a polycrystalline sample of CeRu{sub 2}Al{sub 2}B was annealed in an excess of a Ni–In flux. The initial phase, CeRu{sub 2}Al{sub 2}B, does not recrystallize, instead, crystals of a new phase, Ce{sub 3}Ni{sub 25.75}Ru{sub 3.16}Al{sub 4.1}B{sub 10}, could be isolated once the flux was removed. The title compound crystallizes in the tetragonal space group P4/nmm (No. 129) with a=1139.02(8), c=801.68(6) pm (c/a=0.70) in the Nd{sub 3}Ni{sub 29}Si{sub 4}B{sub 10} structure type. Electrical resistivity measurements reveal metallic behavior with a minimum of 700 µ? cm and a small residual resistivity ratio of RRR=1.4 indicating a large amount of disorder scattering. The cerium atoms are either in the 4+ or an intermediate valence state with a valence fluctuation temperature far above room temperature. - Graphical abstract: Single crystals of Ce{sub 3}Ni{sub 25.75}Ru{sub 3.16}A{sub l4.1}B{sub 10} were obtained using a process in which a polycrystalline sample of CeRu{sub 2}Al{sub 2}B was annealed in an excess of a Ni–In flux. Electrical resistivity measurements reveal metallic behavior with a minimum of 700 ?? cm and a small residual resistivity ratio of RRR=1.4 indicating a large amount of disorder scattering. The cerium atoms are either in the 4+ or an intermediate valence state with a valence fluctuation temperature far above room temperature. Display Omitted - Highlights: • Flux synthesis of high quality single crystals of Ce{sub 3}Ni{sub 25.75}Ru{sub 3.16}Al{sub 4.1}B{sub 10} is presented along with the crystal structure, magnetic and transport properties. • The compound is isostructural to Nd{sub 3}Ni{sub 29}Si{sub 4}B{sub 10} but is first of this structure type showing mixed occupancies of d-elements. • This is an intermetallic phase with Ce in either the 4+ or an intermediate valence state. • The fact that this structure with mixed occupied transition metal sites exists suggests that more compounds of this type should be accessible and the physical properties tuned.

  11. Effects of flux additives on the characteristics of Y{sub 2.95}Al{sub 5}O{sub 12}:0.05Ce{sup 3+} phosphor: Particle growth mechanism and luminescence

    SciTech Connect (OSTI)

    Chiang, Chung-Hao; Liu, Te-Hsing; Lin, Han-Yu; Kuo, Hung-Yi [Department of Electrical Engineering, National Cheng Kung University, Tainan 701, Taiwan (China); Chu, Sheng-Yuan, E-mail: chusy@mail.ncku.edu.tw [Department of Electrical Engineering, National Cheng Kung University, Tainan 701, Taiwan (China); Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan 701, Taiwan (China)

    2013-12-28T23:59:59.000Z

    The dependence of the amount of the BaF{sub 2} flux additive on the luminescence of Y{sub 2.95}Al{sub 5}O{sub 12}:0.05Ce{sup 3+} phosphors was investigated. The integrated emission intensity of Y{sub 2.95}Al{sub 5}O{sub 12}:0.05Ce{sup 3+} prepared without the flux was enhanced by 29% with the addition of BaF{sub 2} flux at the optimum amount of 6?wt. %. Such an enhancement can be attributed to the purer phase of Y{sub 3}Al{sub 5}O{sub 12} and the morphology change from the irregular shape to spherical shape with the smoother surface due to the flux. The morphology and luminescence of Y{sub 2.95}Al{sub 5}O{sub 12}:0.05Ce{sup 3+} prepared with the 6?wt. % BaF{sub 2} flux additive (Sample II) were further compared with those of Y{sub 2.95}Al{sub 5}O{sub 12}:0.05Ce{sup 3+} prepared with the 7?wt. % H{sub 3}BO{sub 3} flux additive (Sample I). The particle size, particle shape, and integrated emission intensity (?{sub ex}?=?450?nm) of the former were found to be larger, more regular, and 6% higher than those of the latter. The difference in the morphology of Samples I and II, which led to the difference in the emission intensity and the external quantum efficiency, were well explained by the particle growth mechanism.

  12. In-situ and theoretical studies for the dissociation of water on an active Ni/CeO? catalyst: Importance of strong metal-support interactions for the cleavage of O-H bonds

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

    Carrasco, Javier [Inst. de Catalisis y Petroleoquimica, CSIC, Madrid (Spain); CIC Energigune, Minana, Alava (Spain); Rodriguez, Jose A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States); Lopez-Duran, David [Inst. de Catalisis y Petroleoquimica, CSIC, Madrid (Spain); CIC Energigune, Minana, Alava (Spain); Liu, Zongyuan [Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States); Duchon, Tomas [Charles Univ., Praha (Czech Republic); Evans, Jaime [Univ. Central de Venezuela, Caracas (Venezuela); Senanayake, Sanjaya D. [Brookhaven National Lab. (BNL), Upton, NY (United States); Crumlin, Ethan J. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Matolin, Vladimir [Charles Univ., Praha (Czech Republic); Ganduglia-Pirovano, M. Veronica [Inst. de Catalisis y Petroleoquimica, CSIC, Madrid (Spain)

    2015-03-23T23:59:59.000Z

    Water dissociation is crucial in many catalytic reactions on oxide-supported transition-metal catalysts. Here, supported by experimental and density-functional theory results, we elucidate the effect of the support on O-H bond cleavage activity for nickel/ceria systems. Ambient-pressure O1s photoemission spectra at low Ni loadings on CeO?(111) reveal a substantially larger amount of OH groups as compared to the bare support. Our computed activation energy barriers for water dissociation show an enhanced reactivity of Ni adatoms on CeO?(111) compared with pyramidal Ni? particles with one Ni atom not in contact with the support, and extended Ni(111) surfaces. At the origin of this support effect is the ability of ceria to stabilize oxidized Ni²? species by accommodating electrons in localized f-states. The fast dissociation of water on Ni/CeO? has a dramatic effect on the activity and stability of this system as a catalyst for the water-gas shift and ethanol steam reforming reactions.

  13. In-situ and theoretical studies for the dissociation of water on an active Ni/CeO? catalyst: Importance of strong metal-support interactions for the cleavage of O-H bonds

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

    Carrasco, Javier; Rodriguez, Jose A.; Lopez-Duran, David; Liu, Zongyuan; Duchon, Tomas; Evans, Jaime; Senanayake, Sanjaya D.; Crumlin, Ethan J.; Matolin, Vladimir; Ganduglia-Pirovano, M. Veronica

    2015-03-23T23:59:59.000Z

    Water dissociation is crucial in many catalytic reactions on oxide-supported transition-metal catalysts. Here, supported by experimental and density-functional theory results, we elucidate the effect of the support on O-H bond cleavage activity for nickel/ceria systems. Ambient-pressure O1s photoemission spectra at low Ni loadings on CeO?(111) reveal a substantially larger amount of OH groups as compared to the bare support. Our computed activation energy barriers for water dissociation show an enhanced reactivity of Ni adatoms on CeO?(111) compared with pyramidal Ni? particles with one Ni atom not in contact with the support, and extended Ni(111) surfaces. At the origin of thismore »support effect is the ability of ceria to stabilize oxidized Ni²? species by accommodating electrons in localized f-states. The fast dissociation of water on Ni/CeO? has a dramatic effect on the activity and stability of this system as a catalyst for the water-gas shift and ethanol steam reforming reactions.« less

  14. Probing local structure in the yellow phosphor LaSr[subscript 2]AlO[subscript 5]:Ce[superscript 3+], by the maximum entropy method and pair distribution function analysis

    SciTech Connect (OSTI)

    Im, Won Bin; Page, Katharine; DenBaars, Steven P.; Seshadri, Ram (UCSB); (LANL)

    2011-08-04T23:59:59.000Z

    The compound LaSr{sub 2}AlO{sub 5} was recently introduced as a competitive Ce{sup 3+} host material for blue-pumped yellow phosphors for use in white light emitting diodes. A crucial feature of the crystal structure of LaSr{sub 2}AlO{sub 5} is that La, which is the host site for Ce{sup 3+}, is located in the 8h positions of the I4/mcm crystal structure, a site equally shared with Sr. While the average crystal structure of LaSr{sub 2}AlO{sub 5} as revealed by Rietveld analysis of laboratory and synchrotron X-ray diffraction data suggests nothing untoward, maximum entropy method analysis of the synchrotron X-ray data reveals the existence of conspicuous non-sphericity of the electron density. Pair distribution function analysis of the data suggests that despite their occupying the same crystallographic site, La and Sr possess distinct coordination environments, and the environment around La is more compact and regular than the environment suggested by the Rietveld refinement of the average structure. The absorption and emission from Ce{sup 3+} centers is controlled by the local coordination and symmetry, and the use of powerful new tools in unraveling details of these strengthens the rational search for new phosphors for solid state white lighting.

  15. A Brief Review of Past INL Work Assessing Radionuclide Content in TMI-2 Melted Fuel Debris: The Use of 144Ce as a Surrogate for Pu Accountancy

    SciTech Connect (OSTI)

    D. L. Chichester; S. J. Thompson

    2013-09-01T23:59:59.000Z

    This report serves as a literature review of prior work performed at Idaho National Laboratory, and its predecessor organizations Idaho National Engineering Laboratory (INEL) and Idaho National Engineering and Environmental Laboratory (INEEL), studying radionuclide partitioning within the melted fuel debris of the reactor of the Three Mile Island 2 (TMI-2) nuclear power plant. The purpose of this review is to document prior published work that provides supporting evidence of the utility of using 144Ce as a surrogate for plutonium within melted fuel debris. When the TMI-2 accident occurred no quantitative nondestructive analysis (NDA) techniques existed that could assay plutonium in the unconventional wastes from the reactor. However, unpublished work performed at INL by D. W. Akers in the late 1980s through the 1990s demonstrated that passive gamma-ray spectrometry of 144Ce could potentially be used to develop a semi-quantitative correlation for estimating plutonium content in these materials. The fate and transport of radioisotopes in fuel from different regions of the core, including uranium, fission products, and actinides, appear to be well characterized based on the maximum temperature reached by fuel in different parts of the core and the melting point, boiling point, and volatility of those radioisotopes. Also, the chemical interactions between fuel, fuel cladding, control elements, and core structural components appears to have played a large role in determining when and how fuel relocation occurred in the core; perhaps the most important of these reaction appears to be related to the formation of mixed-material alloys, eutectics, in the fuel cladding. Because of its high melting point, low volatility, and similar chemical behavior to plutonium, the element cerium appears to have behaved similarly to plutonium during the evolution of the TMI-2 accident. Anecdotal evidence extrapolated from open-source literature strengthens this logical feasibility for using cerium, which is rather easy to analyze using passive nondestructive analysis gamma-ray spectrometry, as a surrogate for plutonium in the final analysis of TMI-2 melted fuel debris. The generation of this report is motivated by the need to perform nuclear material accountancy measurements on the melted fuel debris that will be excavated from the damaged nuclear reactors at the Fukushima Daiichi nuclear power plant in Japan, which were destroyed by the Tohoku earthquake and tsunami on March 11, 2011. Lessons may be taken from prior U.S. work related to the study of the TMI-2 core debris to support the development of new assay methods for use at Fukushima Daiichi. While significant differences exist between the two reactor systems (pressurized water reactor (TMI-2) versus boiling water reactor (FD), fresh water post-accident cooing (TMI-2) versus salt water (FD), maintained containment (TMI-2) versus loss of containment (FD)) there remain sufficient similarities to motivate these comparisons.

  16. Downflow dryout in a heated ribbed vertical annulus with a cosine power profile (Results from test series ECS-2, WSR, and ECS-2cE)

    SciTech Connect (OSTI)

    Larson, T.K.; Anderson, J.L.; Condie, K.G.

    1990-12-01T23:59:59.000Z

    Experiments designed to investigate surface dryout in a heated, ribbed annulus test section simulating one of the annular coolant channels of a Savannah River Plant production reactor Mark 22 fuel assembly have been conducted at the Idaho National Engineering Laboratory. The inner surface of the annulus was constructed of aluminum and was electrically heated to provide an axial cosine power profile and a flat azimuthal power shape. Data presented in this report are from the ECS-2, WSR, and ECS-2cE series of tests. These experiments were conducted to examine the onset of wall thermal excursion for a range of flow, inlet fluid temperature, and annulus outlet pressure. Hydraulic boundary conditions on the test section represent flowrates (0.1--1.4 1/s), inlet fluid temperatures (293--345 K), and outlet pressures (-18--139.7 cm of water relative to the bottom of the heated length (61--200 cm of water relative to the bottom of the lower plenum)) expected to occur during the Emergency Coolant System (ECS) phase of postulated Loss-of-Coolant Accident in a production reactor. The onset of thermal excursion based on the present data is consistent with data gathered in test rigs with flat axial power profiles. The data indicate that wall dryout is primarily a function of liquid superficial velocity. Air entrainment rate was observed to be a strong function of the boundary conditions (primarily flowrate and liquid temperature), but had a minor effect on the power at the onset of thermal excursion for the range of conditions examined. 14 refs., 33 figs., 13 tabs.

  17. civil & environmental (CE) CE / ENE overview programs available

    E-Print Network [OSTI]

    Rohs, Remo

    ; scientific, social, legal and political aspects of environmental issues; air/water/land pollution and control and harbor structures, industrial facilities -- and addressing the prob- lems of ground water and air pollution as well as industrial and hazardous waste man- agement. They are also responsible for developing

  18. BSH: Order (2013-CE-2001)

    Broader source: Energy.gov [DOE]

    DOE ordered BSH Home Appliances Corp. to pay a $8,000 civil penalty after finding BSH had failed to certify that certain models of residential clothes washers comply with the applicable energy/water conservation standards.

  19. NCBECS C&E 1979

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    This category includes: Preschool Elementary Junior High Senior High College or University Vocational School Specific Building Types (on school campuses) - Administration...

  20. TMP: Order (2013-CE-5334)

    Broader source: Energy.gov [DOE]

    DOE ordered TMP Manufacturing Company, Inc. to pay a $8,000 civil penalty after finding TMP had failed to certify that certain models of walk-in cooler and freezer components comply with the applicable energy conservation standards.

  1. Keystone: Order (2013-CE-2601)

    Broader source: Energy.gov [DOE]

    DOE ordered Keystone Technologies, LLC to pay a $8,000 civil penalty after finding Keystone had failed to certify that certain models of fluorescent lamp ballasts comply with the applicable energy conservation standards.

  2. CE Geothermal | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomassSustainable andBucoda,BurkeNebraska:CDM SustainableRelocation Permits to

  3. CE Solar | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovation inOpen Energy Information BurkinaButyl FuelCCCT SolarCDMCE

  4. Itinerant electrons, local moments, and magnetic correlations in the pnictide superconductors CeFeAsO??xFxand Sr(Fe??xCox)?As?

    SciTech Connect (OSTI)

    Vilmercati, Paolo; Fedorov, Alexei; Bondino, Federica; Offi, Francesco; Panaccione, Giancarlo; Lacovig, Paolo; Simonelli, Laura; McGuire, Michael A.; Sefat, Athena S. M.; Mandrus, David; Sales, Brian C.; Egami, Takeshi; Ku, Wei; Mannella, Norman

    2012-06-01T23:59:59.000Z

    A direct and element-specific measurement of the local Fe spin moment has been provided by analyzing the Fe 3s core level photoemission spectra in the parent and optimally doped CeFeAsO??xFx (x = 0, 0.11) and Sr(Fe??xCox)2As2 (x = 0, 0.10) pnictides. The rapid time scales of the photoemission process allowed the detection of large local spin moments fluctuating on a 10?¹? s time scale in the paramagnetic, antiferromagnetic, and superconducting phases, indicative of the occurrence of ubiquitous strong Hund's magnetic correlations. The magnitude of the spin moment is found to vary significantly among different families, 1.3?B in CeFeAsO and 2.1?B in SrFe?As?. Surprisingly, the spin moment is found to decrease considerably in the optimally doped samples, 0.9?B in CeFeAsO?.??F?.?? and 1.3?B in Sr(Fe?.?Co?.?)?As?. The strong variation of the spin moment against doping and material type indicates that the spin moments and the motion of itinerant electrons are influenced reciprocally in a self-consistent fashion, reflecting the strong competition between the antiferromagnetic superexchange interaction among the spin moments and the kinetic energy gain of the itinerant electrons in the presence of a strong Hund's coupling. By describing the evolution of the magnetic correlations concomitant with the appearance of superconductivity, these results constitute a fundamental step toward attaining a correct description of the microscopic mechanisms shaping the electronic properties in the pnictides, including magnetism and high-temperature superconductivity.

  5. Itinerant electrons, local moments, and magnetic correlations in the pnictide superconductors CeFeAsO1 xFx and Sr(Fe1 xCox)2As2

    SciTech Connect (OSTI)

    Vilmercati, P. [University of Tennessee, Knoxville (UTK); Fedorov, A. V. [Lawrence Berkeley National Laboratory (LBNL); Bondino, F. [CNR-INFM, Trieste, Italy; Offi, F. [University of Rome; Panaccione, G. [TASC National Laboratory, Trieste, Italy; Lacovig, Paolo [Sincrotrone Trieste S.C.p.A.,Trieste, Italy; Simonelli, Laura [European Synchrotron Radiation Facility (ESRF); McGuire, Michael A [ORNL; Safa-Sefat, Athena [ORNL; Mandrus, D. [University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL); Sales, Brian C [ORNL; Egami, T [University of Tennessee, Knoxville (UTK); Ku, Wei [Brookhaven National Laboratory (BNL); Mannella, Norman [University of Tennessee, Knoxville (UTK)

    2012-01-01T23:59:59.000Z

    A direct and element-specific measurement of the local Fe spin moment has been provided by analyzing the Fe 3s core level photoemission spectra in the parent and optimally doped CeFeAsO{sub 1-x}F{sub x} (x = 0, 0.11) and Sr(Fe{sub 1-x}Co{sub x}){sub 2}As{sub 2} (x = 0, 0.10) pnictides. The rapid time scales of the photoemission process allowed the detection of large local spin moments fluctuating on a 10{sup -15} s time scale in the paramagnetic, antiferromagnetic, and superconducting phases, indicative of the occurrence of ubiquitous strong Hund's magnetic correlations. The magnitude of the spin moment is found to vary significantly among different families, 1.3 {micro}{sub B} in CeFeAsO and 2.1 {micro}{sub B} in SrFe{sub 2}As{sub 2}. Surprisingly, the spin moment is found to decrease considerably in the optimally doped samples, 0.9 {micro}{sub B} in CeFeAsO{sub 0.89}F{sub 0.11} and 1.3 {micro}{sub B} in Sr(Fe{sub 0.9}Co{sub 0.1}){sub 2}As{sub 2}. The strong variation of the spin moment against doping and material type indicates that the spin moments and the motion of itinerant electrons are influenced reciprocally in a self-consistent fashion, reflecting the strong competition between the antiferromagnetic superexchange interaction among the spin moments and the kinetic energy gain of the itinerant electrons in the presence of a strong Hund's coupling. By describing the evolution of the magnetic correlations concomitant with the appearance of superconductivity, these results constitute a fundamental step toward attaining a correct description of the microscopic mechanisms shaping the electronic properties in the pnictides, including magnetism and high-temperature superconductivity.

  6. Effect of Fe and Co doping on electrical and thermal properties of La{sub 0.5}Ce{sub 0.5}Mn{sub 1?x}(Fe, Co){sub x}O{sub 3} manganites

    SciTech Connect (OSTI)

    Varshney, Dinesh, E-mail: vdinesh33@rediffmail.com [Materials Science Laboratory, School of Physics, Devi Ahilya University, Khandwa Road Campus, Indore 452001 (India); Mansuri, Irfan [Materials Science Laboratory, School of Physics, Devi Ahilya University, Khandwa Road Campus, Indore 452001 (India); Department of Physics, Indore Institute of Science and Technology, Pithampur Road, Rau, Indore 453331 (India); Shaikh, M.W. [Materials Science Laboratory, School of Physics, Devi Ahilya University, Khandwa Road Campus, Indore 452001 (India); Kuo, Y.K. [Department of Physics, National Dong Hwa University, Hualien 97401, Taiwan (China)

    2013-11-15T23:59:59.000Z

    Graphical abstract: - Highlights: • Low temperature resistivity minimum contributes to Coulomb and Kondo scattering. • Metallic resistivity shows electron, magnon and phonon scattering are significant. • At high temperatures small polaron conduction mechanism is viable. • Susceptibility measurements show ferromagnetic–paramagnetic transition. - Abstract: The effect of Fe and Co doping on structural, electrical and thermal properties of half doped La{sub 0.5}Ce{sub 0.5}Mn{sub 1?x}(Fe, Co){sub x}O{sub 3} is investigated. The structure of these crystallizes in to orthorhombically distorted perovskite structure. The electrical resistivity of La{sub 0.5}Ce{sub 0.5}MnO{sub 3} exhibits metal-semiconductor transition (T{sub MS} at ?225 K). However, La{sub 0.5}Ce{sub 0.5}Mn{sub 1?x}TM{sub x}O{sub 3} (TM = Fe, Co; 0.0 ? x ? 0.1) manganites show semiconducting behavior. The thermopower measurements infer hole as charge carriers and electron–magnon as well spin wave fluctuation mechanism are effective at low temperature domain and SPC model fits the observed data at high temperature. The magnetic susceptibility measurement confirms a transition from paramagnetic to ferromagnetic phase. The observed peaks in the specific heat measurements, shifts to lower temperatures and becomes progressively broader with doping of transition metals on Mn-site. The thermal conductivity is measured in the temperature range of 10–350 K with a magnitude in between 10 and 80 mW/cm K.

  7. Habitat types of the Eastern Cross Timbers of Texas

    E-Print Network [OSTI]

    Marcy, Larry Eugene

    1982-01-01T23:59:59.000Z

    . Limestone 42. Falls c9 CV Pj CV lO S o E tO N 0 UJ D 0 ? J2 lO E 0 P C vl o c 0 4 Vl 41 N ID A N (3) provide shelter, nest sites, and den sites which are virtually absent or widely scattered in adjacent prairie and cropland, (4... mmril chio OCO %CO CF ril IA m hl IO hl chl m wm mNNWNNLA m4 o' N o 4' c ch c&e mrn mLALo Io c- CD o c 0 wco hl hl N 0 4 0 0 I I 0 CO cFIIA LAO chN I COP LAIC O m LA CF Lfi ril rn co CFI O chio m I NCOOCO N N m IA IO LA CFI N CI IO I...

  8. Long-range ordering of reduced magnetic moments in the spin-gap compound CeOs{sub 2}Al{sub 10} as seen via muon spin relaxation and neutron scattering

    SciTech Connect (OSTI)

    Adroja, D. T.; Hillier, A. D.; Kockelmann, W. A.; Anand, V. K.; Stewart, J. R.; Taylor, J. [ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot Oxon OX11 0QX (United Kingdom); Deen, P. P. [Institute Laue-Langevin, BP 156, 6 Rue Jules Horowitz, 38042 Grenoble Cedex (France); Strydom, A. M. [Physics Department, University of Johannesburg, P.O. Box 524, Auckland Park 2006 (South Africa); Muro, Y.; Kajino, J.; Takabatake, T. [Department of Quantum Matter, ADSM, and IAMR, Hiroshima University, Higashi-Hiroshima 739-8530 (Japan)

    2010-09-01T23:59:59.000Z

    We have carried out neutron diffraction, muon spin relaxation ({mu}SR), and inelastic neutron scattering (INS) investigations on a polycrystalline sample of CeOs{sub 2}Al{sub 10} to investigate the nature of the phase transition observed near 29 K in the resistivity and heat capacity. Our {mu}SR data clearly reveal coherent frequency oscillations below 28 K, indicating the presence of an internal field at the muon site, which confirms the long-range magnetic ordering of the Ce moment below 28 K. Upon cooling the sample below 15 K, unusual behavior of the temperature-dependent {mu}SR frequencies may indicate either a change in the muon site, consistent with the observation of superstructure reflections in electron diffraction, or a change in the ordered magnetic structure. Neutron diffraction data do not reveal any clear sign of either magnetic Bragg peaks or superlattice reflections. Furthermore, INS measurements clearly reveal the presence of a sharp inelastic excitation near 11 meV between 5 and 26 K, due to opening of a gap in the spin-excitation spectrum, which transforms into a broad response at and above 30 K. The magnitude of the spin gap (11 meV) as derived from the INS peak position agrees very well with the gap value as estimated from the bulk properties.

  9. Combined effect of chemical pressure and valence electron concentration through the electron-deficient Li substitution on the RE{sub 4}LiGe{sub 4} (RE=La, Ce, Pr, and Sm) system

    SciTech Connect (OSTI)

    Nam, Gnu; Jeon, Jieun; Kim, Youngjo [Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk 361-763 (Korea, Republic of); Kwon Kang, Sung [Department of Chemistry, Chungnam National University, Daejeon, Chungnam 305-764 (Korea, Republic of); Ahn, Kyunghan [Advanced Materials Research Center, Samsung Advanced Institute of Technology, Yongin-si, Gyeonggi-do 446-712 (Korea, Republic of); You, Tae-Soo, E-mail: tsyou@chungbuk.ac.kr [Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk 361-763 (Korea, Republic of)

    2013-09-15T23:59:59.000Z

    Four members of the RE{sub 4}LiGe{sub 4} (RE=La, Ce, Pr, and Sm) system have been prepared by high-temperature reaction method and characterized by X-ray diffractions. All compounds crystallize in the orthorhombic Gd{sub 5}Si{sub 4}-type structure (space group Pnma, Pearson code oP16) with bonding interactions for interslab Ge{sub 2} dimers. The Li substitution for rare-earth elements in the RE{sub 4}LiGe{sub 4} system leads to a combined effect of the increased chemical pressure and the decreased valance electron concentration (VEC), which eventually results in the structure transformation from the Sm{sub 5}Ge{sub 4}-type with all broken interslab Ge–Ge bond for the parental RE{sub 5}Ge{sub 4} to the Gd{sub 5}Si{sub 4}-type structure for the ternary RE{sub 4}LiGe{sub 4} (RE=La, Ce, Pr, and Sm) system. Site-preference between rare-earth metals and Li is proven to generate energetically the most favorable atomic arrangements according to coloring-problem, and the rationale is provided using both the size-factor and the electronic-factor related, respectively, to site-volume and electronegativity as well as QVAL values. Tight-binding, linear-muffin-tin-orbital (TB-LMTO) calculations are performed to investigate electronic densities of states (DOS) and crystal orbital Hamilton population (COHP) curves. The influence of reduced VEC for chemical bonding including the formation of interslab Ge{sub 2} dimers is also discussed. The magnetic property measurements prove that the non-magnetic Li substitution leads to the ferromagnetic (FM)-like ground state for Ce{sub 4}LiGe{sub 4} and the co-existence of antiferromagntic (AFM) and FM ground states for Sm{sub 4}LiGe{sub 4}. - Graphical abstract: Reported is a combined effect of the chemical pressure and the reduced VEC caused by the smaller monovalent non-magnetic Li substitution for the larger trivalent magnetic rare-earth metals in the RE{sub 4}LiGe{sub 4} (RE=La, Ce, Pr, and Sm) system. This results in the structure transformation from the Sm{sub 5}Ge{sub 4}-type to the Gd{sub 5}Si{sub 4}-type structure and the changes in magnetic properties. Display Omitted - Highlights: • Four Li-containing intermetallic compounds RE{sub 4}LiGe{sub 4} (RE=La, Ce, Pr and Sm) were synthesized. • The combined effect of the chemical pressure and the reduced VEC caused by Li substitution for a rare-earth metal results in the structure transformation. • Electronic structures and magnetic properties of title compounds were thoroughly investigated.

  10. DeCoding Your Housing Assignment Confused by the letters and numbers that comprise your housing assignment? If so, the following

    E-Print Network [OSTI]

    Howitt, Ivan

    DeCoding Your Housing Assignment Confused by the letters and numbers that comprise your housing Delta Zeta House CE Cedar Hall HA Hawthorn Hall CL CF Lynch Hall HI Hickory Hall EL Elm Hall HL Holshouser Hall G01 Kappa Sigma House HT Hunt Hall G02 Lambda Chi Alpha House MA Maple Hall G03 Zeta Tau

  11. A comparative study of SrO and BaO doping to CeO{sub 2}-ZrO{sub 2}: Characteristic and its catalytic performance for three-way catalysts

    SciTech Connect (OSTI)

    Guo, Jiaxiu, E-mail: guojiaxiu@scu.edu.cn [College of Architecture and Environment, Sichuan University, Chengdu 610065 (China) [College of Architecture and Environment, Sichuan University, Chengdu 610065 (China); National Engineering Research Center for Flue Gas Desulfurization, Chengdu 610065 (China); Shi, Zhonghua, E-mail: shizhonghua@scu.edu.cn [College of Chemistry, Sichuan University, Chengdu 610064 (China)] [College of Chemistry, Sichuan University, Chengdu 610064 (China); Wu, Dongdong [College of Chemistry, Sichuan University, Chengdu 610064 (China)] [College of Chemistry, Sichuan University, Chengdu 610064 (China); Yin, Huaqiang [College of Architecture and Environment, Sichuan University, Chengdu 610065 (China) [College of Architecture and Environment, Sichuan University, Chengdu 610065 (China); National Engineering Research Center for Flue Gas Desulfurization, Chengdu 610065 (China); Gong, Maochu [College of Chemistry, Sichuan University, Chengdu 610064 (China)] [College of Chemistry, Sichuan University, Chengdu 610064 (China); Chen, Yaoqiang [College of Chemistry, Sichuan University, Chengdu 610064 (China) [College of Chemistry, Sichuan University, Chengdu 610064 (China); National Engineering Research Center for Flue Gas Desulfurization, Chengdu 610065 (China)

    2013-02-15T23:59:59.000Z

    Graphical abstract: Display Omitted Highlights: ? The prepared materials have a face-centered cubic structure and nanosize particles. ?Comparing to CZB, aged CZS has 494 ?mol/g of OSC and 30 m{sup 2}/g of surface area. ? CZS and CZB have similar NO sorption and reductive properties and different H{sub 2} uptake. ? T{sub 50} of Pt-Rh/CZS/LA is as low as 199 °C for CO, 228 °C for NO, and 252 °C for C{sub 3}H{sub 8}. ? Pt-Rh/CZS/LA has wider working-window at 320 °C under different ? value. -- Abstract: Ceria-zirconia-strontia (Ce{sub 0.35}Zr{sub 0.55}Sr{sub 0.10}O{sub 1.9}) and ceria-zirconia-baria (Ce{sub 0.35}Zr{sub 0.55}Ba{sub 0.10}O{sub 1.9}) were synthesized using an oxidation-co-precipitation method with hydrogen peroxide (H{sub 2}O{sub 2}) as oxidant. The physical and chemical properties of the prepared materials were investigated using Brunauer–Emmett–Teller surface area characterization, transmission electron microscopy, X-ray diffraction, Raman spectra, X-ray photoelectron spectroscopy, and oxygen pulse reaction. The prepared materials were used in preparing three-way catalysts with low Pt and Rh content. Moreover, catalytic activities were evaluated at a fixed bed under a simulated gaseous mixture. The results are as follows: (1) the prepared materials have a face-centered cubic structure and are nano-sized; (2) aged Ce{sub 0.35}Zr{sub 0.55}Sr{sub 0.10}O{sub 1.9} has higher oxygen storage capacity (494 ?mol/g), better thermal stability (30 m{sup 2}/g), good low-temperature reducibility, and high hydrogen uptake after TPR-redox cycles; (3) the light-off temperature (T{sub 50}) of Pt-Rh/CZS/LA can be as low as 199 °C for CO, 228 °C for NO, and 252 °C for C{sub 3}H{sub 8}; and (4) Pt-Rh/CZS/LA has a fairly wide working-window.

  12. Structural, microstructural and surface properties of a specific CeO{sub 2}-Bi{sub 2}O{sub 3} multiphase system obtained at 600 {sup o}C

    SciTech Connect (OSTI)

    Bourja, Lamia; Bakiz, Bahcine [Institut Materiaux Microelectronique et Nanosciences de Provence, IM2NP, UMR CNRS 6242, Universite du Sud Toulon-Var, BP 20132, 83957 La Garde Cedex (France); Laboratoire Materiaux et Environnement LME, Faculte des Sciences, Universite Ibn Zohr, BP 8106, Cite Dakhla, Agadir, Maroc (Morocco); Benlhachemi, Abdeljalil; Ezahri, Mohamed [Laboratoire Materiaux et Environnement LME, Faculte des Sciences, Universite Ibn Zohr, BP 8106, Cite Dakhla, Agadir, Maroc (Morocco); Villain, Sylvie [Institut Materiaux Microelectronique et Nanosciences de Provence, IM2NP, UMR CNRS 6242, Universite du Sud Toulon-Var, BP 20132, 83957 La Garde Cedex (France); Crosnier, Olivier [Laboratoire de Genie des Materiaux et Procedes Associes, Polytech Nantes, rue Christian Pauc BP 50609, 44306 Nantes Cedex 3 (France); Favotto, Claude [Institut Materiaux Microelectronique et Nanosciences de Provence, IM2NP, UMR CNRS 6242, Universite du Sud Toulon-Var, BP 20132, 83957 La Garde Cedex (France); Gavarri, Jean-Raymond, E-mail: gavarri.jr@univ-tln.f [Institut Materiaux Microelectronique et Nanosciences de Provence, IM2NP, UMR CNRS 6242, Universite du Sud Toulon-Var, BP 20132, 83957 La Garde Cedex (France)

    2011-03-15T23:59:59.000Z

    Polycrystalline samples of (1-x) CeO{sub 2}-x/2 Bi{sub 2}O{sub 3} phases, where x is the atom fraction of bismuth have been synthesized by the precipitation process and after the thermal treatment at 600 {sup o}C, under air. Samples are first characterized by the X-ray diffraction and scanning electron microscopy. To determine the samples specific surface areas, Brunauer-Emmett-Teller (BET) analyses have been performed. In the composition range 0{<=}x{<=}0.20, a cubic solid solution with fluorite structure is obtained. For compositions x comprised between 0.30 and 0.90, two types of T' (or {beta}') and T (or {beta}) tetragonal phases, similar to the well-known {beta}' or {beta} Bi{sub 2}O{sub 3} metastable structural varieties, are observed. However, the crystal cell volumes of these {beta}' or {beta} Bi{sub 2}O{sub 3} phases increase with the composition x in bismuth: this might be due to the presence of defects or substitution by cerium atoms, in the tetragonal lattices. Using X-ray diffraction profile analyses, correlations between bismuth composition x and crystal sizes or lattice distortions have been established. The solid-gas interactions between these polycrystalline materials and air-CH{sub 4} and air-CO flows have been studied as a function of temperature and composition x, using Fourier transform infrared (FTIR) analyses of the conversions of CH{sub 4} and CO gases into the CO{sub 2} gas. The transformations of CH{sub 4} and CO molecules as a function of time and temperature are determined through the intensities of FTIR CO{sub 2} absorption bands. Using the specific surface areas determined from BET analyses, these FTIR intensities have been normalized and compared. For all bismuth compositions, a low catalytic reactivity is observed with air-CH{sub 4} gas flows, while, for the highest bismuth compositions, a high catalytic reactivity is observed with air-CO gas flows. -- Graphical abstract: Catalytic efficiencies of CeO{sub 2}-Bi{sub 2}O{sub 3}system: catalytic actions on methane (on the left) or carbon monoxide (on the right) of (1-x)CeO{sub 2}-x/2 Bi{sub 2}O{sub 3} samples, as a function of the fraction x, and for fixed temperatures: on the vertical axis, the intensities of CO{sub 2} FTIR absorption bands are reported. Strong efficiency of bismuth rich samples for CO conversion. Display Omitted Research highlights: {yields} Stabilization of metastable polymorph Bi{sub 2}O{sub 3} phases in the mix system [(1-x)CeO{sub 2}+(x/2)Bi{sub 2}O{sub 3}] at 600 {sup o}C. {yields} Solid gas interactions between this system and air-CO or air-CH{sub 4} gas flows at various temperatures and bismuth compositions. {yields} High efficiency of bismuth rich samples to convert CO into CO{sub 2}.

  13. Understanding Substrate Features Influenced by Pretreatments that Limit Biomass Deconstruction by Enzymes

    E-Print Network [OSTI]

    Gao, Xiadi

    2013-01-01T23:59:59.000Z

    Wyman C: Handbook on bioethanol: production and utilization.In Book Handbook on bioethanol: production and utilization (Balat H, Oz C: Progress in bioethanol processing. Prog Energ

  14. New orthorhombic derivative of CaCu{sub 5}-type structure: RNi{sub 4}Si compounds (R=Y, La, Ce, Sm, Gd–Ho), crystal structure and some magnetic properties

    SciTech Connect (OSTI)

    Morozkin, A.V., E-mail: morozkin@general.chem.msu.ru [Department of Chemistry, Moscow State University, Leninskie Gory, House 1, Building 3, GSP-2, Moscow 119992 (Russian Federation); Knotko, A.V. [Department of Chemistry, Moscow State University, Leninskie Gory, House 1, Building 3, GSP-2, Moscow 119992 (Russian Federation); Yapaskurt, V.O. [Department of Petrology, Geological Faculty, Moscow State University, Leninskie Gory, Moscow 119992 (Russian Federation); Yuan, Fang; Mozharivskyj, Y. [Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1 (Canada); Nirmala, R. [Indian Institute of Technology Madras, Chennai 600036 (India)

    2013-12-15T23:59:59.000Z

    The crystal structure of new YNi{sub 4}Si-type RNi{sub 4}Si (R=Y, La, Ce, Sm, Gd–Ho) compounds has been established using powder X-ray diffraction. The YNi{sub 4}Si structure is a new structure type, which is orthorhombic derivative of CaCu{sub 5}-type structure (space group Cmmm N 65, oC12). GdNi{sub 4}Si and DyNi{sub 4}Si compounds order ferromagnetically at 25 and 19 K, respectively whereas YNi{sub 4}Si shows antiferromagnetic nature. At 15 K, DyNi{sub 4}Si shows second antiferromagnetic-like transition. The magnetic moment of GdNi{sub 4}Si at 5 K in 50 kOe field is ?7.2 ?{sub B}/f.u. suggesting a completely ordered ferromagnetic state. The magnetocaloric effect of GdNi{sub 4}Si is calculated in terms of isothermal magnetic entropy change and it reaches the maximum value of ?12.8 J/kg K for a field change of 50 kOe near T{sub C} ?25 K. - Graphical abstract: The RNi{sub 4}Si (R=Y, La, Ce, Sm, Gd–Ho) compounds crystallize in new YNi{sub 4}Si-type structure which is orthorhombic derivative of the basic CaCu{sub 5}-type structure. GdNi{sub 4}Si and DyNi{sub 4}Si compounds show the ferromagnetic-like ordering, whereas.YNi{sub 4}Si has the antiferromagnetic nature. The GdNi{sub 4}Si demonstrates the big magnetocaloric effect near temperature of ferromagnetic ordering. The relationship between initial CaCu{sub 5}-type DyNi{sub 5} and YNi{sub 4}Si-type DyNi{sub 4}Si lattices.

  15. S T U D EN T A ND EN R OLM EN T S ER V I CE S DI V IS IO N In order to assist departments and colleges with their planning cycle for 2014-15 and beyond,

    E-Print Network [OSTI]

    Saskatchewan, University of

    Page | 1 S T U D EN T A ND EN R OLM EN T S ER V I CE S DI V IS IO N In order to assist departments: Key Dates and Deadlines for 2014-15 DATE: March 28, 2014 #12;Page | 2 S T U D EN T A ND EN R OLM EN

  16. Genetic Regulation of Intrinsic Endurance Exercise Capacity in Mice

    E-Print Network [OSTI]

    Courtney, Sean M.

    2013-07-26T23:59:59.000Z

    /J, C58/J, CAST/EiJ, CBA/J, CE/J, DBA/2J, FVB/NJ, KK/HlJ, I/LnJ, LP/J, MA/MyJ, MRL/MpJ, NOD/ShiLtJ, NON/ShiLtJ, NZB/BINJ, NZO/HlLtJ, NZW/LacJ, PL/J, PWD/PhJ, PWK/PhJ, RIIIS/J, SJL/J, SM/J, SWR/J and WSB/EiJ) (n = 6 per strain) were purchased from...

  17. Anode-supported tubular SOFCs based on BaZr0.1Ce0.7Y0.1Yb0.1O3?? electrolyte fabricated by dip coating

    SciTech Connect (OSTI)

    Chen, Changcheng; Liu, Mingfei; Bai, Yaohui; Yang, Lei; Xie, Erqing; Liu, Meilin

    2011-01-01T23:59:59.000Z

    Anode-supported tubular solid oxide fuel cells (SOFCs) based on a proton and oxide ion mixed conductor, BaZr{sub 0.1}Ce{sub 0.7}Y{sub 0.1}Yb{sub 0.1}O{sub 3 ? ?} (BZCYYb), have been fabricated using a dip coating and co-firing process. This new fabrication technique effectively reduced the Ohmic resistances of tubular cells to ~ 0.1 and ~ 0.3 ? cm{sup 2} at 750 and 600 °C, respectively. Typical tubular cells with Ni-BZCYYb anode, BZCYYb electrolyte, and La{sub 0.6}Sr{sub 0.4}Co{sub 0.2}Fe{sub 0.8}O{sub 3 ? ?} (LSCF)-BZCYYb composite cathode demonstrated much-improved performance, achieving peak power densities of 1.13, 0.81, 0.63, and 0.53 W cm{sup ? 2} at 750, 700, 650, and 600 °C, respectively, when humidified (3 v% water vapor) hydrogen was used as fuel and ambient air as oxidant.

  18. Synthesis and characterization of (CeO{sub 2}){sub 0.8}(SmO{sub 1.5}){sub 0.2} thin films from polymeric precursors

    SciTech Connect (OSTI)

    Chen, C.C.; Nasrallah, M.M.; Anderson, H.U. [Univ. of Missouri, Rolla, MO (United States). Dept. of Ceramic Engineering

    1993-12-01T23:59:59.000Z

    (CeO{sub 2}){sub 0.8}(SmO{sub 1.5}){sub 0.2}(CSO) has been suggested for solid oxide fuel cell (SOFC) applications, because of its higher electrical conductivity and chemical stability, compared to other ceria-based materials. However, CSO is difficult to densify under conditions compatible with other SOFC components. A thin film synthesis technique has been developed for the fabrication of dense CSO films from precursor solutions at relatively low temperatures. Dense, smooth, and homogeneous films were obtained on Pt, single-crystal Si, and La{sub 0.6}Sr{sub 0.4}Co{sub 0.2}Fe{sub 0.8}O{sub 3} (LSCF) substrates by spin-coating a polymeric precursor and subsequent heat-treatment. Crystallization of the film occurred at temperatures as low as 320 C. The developed oxide film did not react with La{sub 0.8}Sr{sub 0.2}MnO{sub 3}, LSCF, or (ZrO{sub 2}){sub 0.84}(YO{sub .15}){sub 0.16}(YSZ) at temperatures up to 1,200 C. When a CSO layer was applied between LSCF and YSZ, a significant improvement in the interfacial resistance was observed. The results suggest that CSO can be used as a buffer layer on YSZ electrolytes for improved performance of high temperature SOFCs.

  19. Percolation theory and quantum critical systems: A new description of the critical behavior in Ce(Ru{sub 0.24}Fe{sub 0.76}){sub 2}Ge{sub 2}

    SciTech Connect (OSTI)

    Gaddy, John [Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211 (United States); Heitmann, Tom, E-mail: HeitmannT@missouri.edu [Missouri Research Reactor, University of Missouri, Columbia, Missouri 65211 (United States); Montfrooij, Wouter [Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211 (United States); Missouri Research Reactor, University of Missouri, Columbia, Missouri 65211 (United States)

    2014-05-07T23:59:59.000Z

    The onset of ordering in quantum critical systems is characterized by a competition between the Kondo shielding of magnetic moments and the ordering of these moments. We show how a distribution of Kondo shielding temperatures—resulting from chemical doping—leads to critical behavior whose main characteristics are given by percolation physics. With the aid of Monte Carlo computer simulations, we are able to infer the low temperature part of the distribution of shielding temperatures in heavily doped quantum critical Ce(Ru{sub 0.24}Fe{sub 0.76}){sub 2}Ge{sub 2}. Based on this distribution, we show that the ordering dynamics—such as the growth of the correlation length upon cooling—can be understood by the spawning of magnetic clusters. Our findings explain why the search for universal exponents in quantum critical systems has been unsuccessful: the underlying percolation network associated with the chemical doping of quantum critical systems has to be incorporated in the modeling of these quantum critical systems.

  20. The influence of auxiliary codopants on persistent phosphor Sr{sub 2}P{sub 2}O{sub 7}:Eu{sup 2+},R{sup 3+} (R = Y, La, Ce, Gd, Tb and Lu)

    SciTech Connect (OSTI)

    Ju, Guifang; Hu, Yihua, E-mail: huyh@gdut.edu.cn; Chen, Li; Wang, Xiaojuan; Mu, Zhongfei

    2013-11-15T23:59:59.000Z

    Graphical abstract: Rare earth ions which close to the line are good codopants. - Highlights: • The persistent luminescence in Sr{sub 2}P{sub 2}O{sub 7}:Eu{sup 2+},R{sup 3+} was reported. • Sr{sub 2}P{sub 2}O{sub 7}:Eu{sup 2+},Lu{sup 3+} shows the best performance. • The influence of auxiliary codopants was discussed in terms of ionic potential and ionic radius. - Abstract: We investigate the persistent luminescence in europium-doped strontium pyrophosphate upon codoping with auxiliary rare earth ions. The persistent phosphors are synthesized via solid-state reaction method under flowing N{sub 2} + H{sub 2}. Under UV irradiation, broadband emission persistent luminescence located at 420 nm is observed in all of these phosphors at room temperature. The effects of auxiliary rare earth ions on Sr{sub 2}P{sub 2}O{sub 7}:Eu{sup 2+} are discussed according to the decay curves and thermoluminescence spectra. Sr{sub 2}P{sub 2}O{sub 7}:Eu{sup 2+},Lu{sup 3+} shows the best performance, while and La{sup 3+} and Ce{sup 3+} codoped samples are the weakest. The influence of auxiliary codopants is discussed in terms of ionic potential and ionic radius. We derive an empirical formula based on the experimental results.

  1. Synthesis, structural characterization and Mössbauer study of LnV{sub 0.5}Fe{sub 0.5}O{sub 3} perovskites (Ln = Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho and Er)

    SciTech Connect (OSTI)

    Ivashita, Flávio F.; Biondo, Valdecir; Bellini, Jusmar V.; Paesano, Andrea [Departamento de Física, Universidade Estadual de Maringá, Av. Colombo 5790, 87.020-900 Maringá, PR (Brazil)] [Departamento de Física, Universidade Estadual de Maringá, Av. Colombo 5790, 87.020-900 Maringá, PR (Brazil); Blanco, M. Cecilia; Fuertes, Valeria C.; Pannunzio-Miner, Elisa V. [INFIQC-CONICET, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA Córdoba (Argentina)] [INFIQC-CONICET, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA Córdoba (Argentina); Carbonio, Raúl E., E-mail: carbonio@fcq.unc.edu.ar [INFIQC-CONICET, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA Córdoba (Argentina)

    2012-09-15T23:59:59.000Z

    Graphical abstract: Mössbauer spectra taken at 200 K for the Y(V{sub 0.5}Fe{sub 0.5})O{sub 3} orthoferrivanadate synthesized by arc-melting. Highlights: ? LnFe{sub 0.5}V{sub 0.5}O{sub 3} were synthesized by the first time for most of the rare-earth elements. ? These orthoferrivanadates crystallize metastably with the perovskite structure. ? Iron and vanadium are trivalent stabilized in these solid solutions. ? The Mössbauer quadrupolar splitting is correlated with the tolerance factor. ? Below 100 K, these perovskites undergo a crystallographic phase transformation. -- Abstract: Perovskites LnV{sub 0.5}Fe{sub 0.5}O{sub 3} (Ln = Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho and Er) were synthesized by rapid solidification from arc-melted samples and characterized by the study of their crystal structure and hyperfine properties. These metastable solid solutions crystallized in the Pbnm symmetry, with the iron and vanadium cations randomly distributed in the transition metal octahedral sites. Depending on the lanthanide present at the A site of the perovskite, iron is present with two valences (i.e., Fe{sup 3+} and Fe{sup 2+}). The volume of the unit cell for these perovskites increases linearly with the lanthanide ionic radius, as the perovskite approaches its ideal structure. At room temperature, the quadrupolar splitting of the trivalent paramagnetic Mössbauer component works as an indirect measurement for the Goldshmidt tolerance factor. Close to or below 100 K, these perovskites undergo a crystallographic phase transformation, probably due to orbital ordering of the V{sup 3+} cations, originating two different magnetic iron sites.

  2. DILEPTON SIGNATURE IN e{sup +}e{sup -}{yields}Hl{sup +}e{sup -}

    SciTech Connect (OSTI)

    Kelly, R. L.; Shimada, T.

    1980-10-01T23:59:59.000Z

    We calculate the lepton distribution in the reaction e{sup +} e{sup -} {yields} (Higgs boson) + (dilepton) mediated by a neutral gauge boson. Propagator effects favor a slow dilepton for which the study of the joint angular distribution of l{sup +} and l{sup -} is an attractive experimental possibility. This distribution is found to be a sensitive probe of the ZZH vertex.

  3. Combined L1 Trigger Tracker studies for HL-LHC upgrade 

    E-Print Network [OSTI]

    Dimas Valle, Jose Roberto Roberto

    2014-09-24T23:59:59.000Z

    needed for the studies on the Higgs sector. The upgrade also includes improvements on the detectors sensitivity to rare processes presenting signs of new physics, which could hold keys to the origins of dark matter and baryon asymmetry in the Universe...

  4. H/L chondrite LaPaz Icefield 031047 ? A feather of Icarus?

    SciTech Connect (OSTI)

    Wittmann, Axel; Friedrich, Jon M.; Troiano, Julianne; Macke, Robert J.; Britt, Daniel T.; Swidle, Timothy D.; Weirich, John R.; Rumble III, Douglas; Lasue, Jeremie; King, David A. (Central Florida); (Lunar and Planetary Institute); (CIW); (Ariz); (Fordham); (LANL)

    2011-10-28T23:59:59.000Z

    Antarctic meteorite LAP 031047 is an ordinary chondrite composed of loosely consolidated chondritic fragments. Its petrography, oxygen isotopic composition and geochemical inventory are ambiguous and indicate an intermediate character between H and L chondrites. Petrographic indicators suggest LAP 031047 suffered a shock metamorphic overprint below {approx}10 GPa, which did not destroy its unusually high porosity of {approx}27 vol%. Metallographic textures in LAP 031047 indicate heating above {approx}700 C and subsequent cooling, which caused massive transformation of taenite to kamacite. The depletion of thermally labile trace elements, the crystallization of chondritic glass to microcrystalline plagioclase of unusual composition, and the occurrence of coarsely crystallized chondrule fragments is further evidence for post-metamorphic heating to {approx}700-750 C. However, this heating event had a transient character because olivine and low-Ca pyroxene did not equilibrate. Nearly complete degassing up to very high temperatures is indicated by the thorough resetting of LAP 031047's Ar-Ar reservoir {approx}100 {+-} 55 Ma ago. A noble gas cosmic-ray exposure age indicates it was reduced to a meter-size fragment at < 0.5 Ma. In light of the fact that shock heating cannot account for the thermal history of LAP 031047 in its entirety, we test the hypothesis that this meteorite belonged to the near-surface of an Aten or Apollo asteroid that underwent heating during orbital passages close to the Sun.

  5. BSH: Proposed Penalty (2013-CE-2001)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that BSH Home Appliances Corp. failed to certify a variety of residential clothes washers as compliant with the applicable energy/water conservation standards.

  6. Metl-Span: Order (2013-CE-5352)

    Broader source: Energy.gov [DOE]

    DOE ordered Metl-Span LLC to pay a $8,000 civil penalty after finding Metl-Span had failed to certify that any basic models of walk-in cooler and freezer components comply with the applicable energy conservation standards.

  7. Distinctive Appliances: Proposed Penalty (2014-CE-23020)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Distinctive Appliances Distributing Inc. failed to certify cooking products as compliant with the applicable energy conservation standards.

  8. Quietside Corp: Proposed Penalty (2010-CE-1710)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Quietside Corporation failed to certify a variety of water heaters as compliant with the applicable energy conservation standards.

  9. Hayward Industries: Proposed Penalty (2010-CE-1110)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Hayward Industries, Inc. failed to certify a variety of pool heaters as compliant with the applicable energy conservation standards.

  10. Daewoo: Proposed Penalty (2010-CE-0410)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Daewoo International Inc. failed to certify a variety of residential clothes dryers as compliant with the applicable energy conservation standards.

  11. American Power: Proposed Penalty (2010-CE-0911)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that American Power Solutions, Inc. failed to certify a general service fluorescent lamp as compliant with the applicable energy conservation standards.

  12. Navien America: Proposed Penalty (2010-CE-1712)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Navien America, Inc. failed to certify a variety of water heaters as compliant with the applicable energy conservation standards.

  13. Elmira Stove Works: Order (2011-CE-1407)

    Broader source: Energy.gov [DOE]

    DOE ordered Elmira Stove Works to pay a $6,000 civil penalty after finding Elmira Stove Works had failed to certify that certain models of refrigerator-freezers comply with the applicable energy conservation standard.

  14. Kold Pack: Order (2013-CE-5323)

    Broader source: Energy.gov [DOE]

    DOE ordered Kold Pack, Inc. to pay a $8,000 civil penalty after finding Kold Pack had failed to certify that certain models of walk-in cooler and freezer components comply with the applicable energy conservation standards.

  15. Kold Pack: Proposed Penalty (2013-CE-5323)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Kold Pack, Inc. failed to certify walk-in cooler or freezer components as compliant with the energy conservation standards.

  16. Capital Cooking: Order (2014-CE-23008)

    Broader source: Energy.gov [DOE]

    DOE ordered Capital Cooking Equipment, Inc. to pay a $8,000 civil penalty after finding Capital Cooking had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  17. Capital Cooking: Proposed Penalty (2014-CE-23008)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Capital Cooking Equipment, Inc. failed to certify cooking products as compliant with the applicable energy conservation standards.

  18. Dacor: Proposed Penalty (2014-CE-23010)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Dacor failed to certify cooking products as compliant with the applicable energy conservation standards.

  19. Viking Range: Proposed Penalty (2014-CE-23014)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Viking Range, LLC failed to certify cooking products as compliant with the applicable energy conservation standards.

  20. Versonel: Proposed Penalty (2014-CE-21009)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Smart Surplus, Inc. d/b/a Versonel failed to certify refrigerators and residential clothes dryers as compliant with the applicable energy conservation standards.

  1. Course No.: CE 511 Graduate Student

    E-Print Network [OSTI]

    Ervin, Elizabeth K.

    the frequencies of a bent-pile system using SAP2000 To see the mode shapes of the system in SAP2000 #12 of that project which satisfies both my course requirement and research goal #12;Bent-Pile System Pile Cap Piles I-55 Intermediate Bent System #12;Defining Section Properties in SAP2000 Pile Cap Section Pile Section

  2. Duro Corporation: Proposed Penalty (2014-CE-23009)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Duro Corporation failed to certify cooking products as compliant with the applicable energy conservation standards.

  3. CIVIL & ENVIRONMENTAL CE / ENE OVERVIEW PROGRAMS AVAILABLE

    E-Print Network [OSTI]

    Rohs, Remo

    , industrial facilities and addressing the problems of ground water and air pollution as well as industrial: transportation systems, water supply, waste disposal systems and industrial and commercial structures. They face, construction engineering and management and environmental engineering. Environmental Engineering is concerned

  4. civil & environmental ce / ene overview programs available

    E-Print Network [OSTI]

    Rohs, Remo

    , industrial facilities -- and addressing the problems of ground water and air pollution as well as industrial: transportation systems, water supply, waste disposal systems and industrial and commercial structures. They face, construction engineering and management and environmental engineering. Environmental Engineering is concerned

  5. Anthony International: Proposed Penalty (2013-CE-5357)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Anthony International failed to certify a variety of walk-in cooler or freezer components as compliant with the applicable energy conservation standards.

  6. Anthony International: Order (2013-CE-5357)

    Broader source: Energy.gov [DOE]

    DOE ordered Anthony International to pay a $8,000 civil penalty after finding Anthony International had failed to certify that any basic models of walk-in cooler and freezer components comply with the applicable energy conservation standards.

  7. Lumiram Electric: Proposed Penalty (2010-CE-1014)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Lumiram Electric Corporation failed to certify a variety of incandescent reflector lamps as compliant with the applicable energy conservation standards.

  8. Lumiram Electric: Order (2010-CE-1014)

    Broader source: Energy.gov [DOE]

    DOE issued an Order and entered into a Compromise Agreement with Lumiram Electric Corporation after finding Lumiram Electric had failed to certify that certain models of incandescent reflector lamps comply with the applicable energy conservation standards.

  9. Kingspan Insulated Panels: Order (2013-CE-5353)

    Broader source: Energy.gov [DOE]

    DOE ordered Kingspan Insulated Panels, Inc. to pay a $8,000 civil penalty after finding Kingspan Insulated Panels had failed to certify that any basic models of walk-in cooler and freezer components comply with the applicable energy conservation standards.

  10. Viking Range: Order (2014-CE-23014)

    Broader source: Energy.gov [DOE]

    DOE ordered Viking Range, LLC to pay a $8,000 civil penalty after finding Viking Range had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  11. American Range: Order (2014-CE-23006)

    Broader source: Energy.gov [DOE]

    DOE ordered American Range Corporation to pay a $8,000 civil penalty after finding American Range had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  12. GE Appliances: Proposed Penalty (2010-CE-2113)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that General Electric Appliances failed to certify a variety of dehumidifiers as compliant with the applicable energy conservation standards.

  13. GE Appliances: Order (2010-CE-2113)

    Broader source: Energy.gov [DOE]

    DOE issued an Order after entering into a Compromise Agreement with General Electric Appliances after finding GE Appliances had failed to certify that certain models of dehumidifiers comply with the applicable energy conservation standards.

  14. Spring 2009 CE 281: Experimental Systems

    E-Print Network [OSTI]

    Gavin, Henri

    modeling 6. strain gages, induction motors, piezo-electrics and other types of sensing and actuation 7 4. free and forced vibration of a lightly damped linear structure 5. chaotic dynamics of a pre, integration and differentiation, bias, drift, and noise. reading: [22]:9.1-9.2 [25]:111,113,153 [74

  15. R-Cold: Order (2013-CE-5354)

    Broader source: Energy.gov [DOE]

    DOE ordered R-Cold, Inc. to pay a $8,000 civil penalty after finding R-Cold had failed to certify that any basic models of walk-in cooler or freezer components comply with the applicable energy conservation standards.

  16. Palmetto Clean Energy (PaCE) Program

    Broader source: Energy.gov [DOE]

    '''''Note: For a limited time, generators of 6 kilowatts or less of renewable energy can now take advantage of a premium $0.10 per kilowatt hour. This premium is available on a first-come-first...

  17. Dans ce numro Le Service Informatique du

    E-Print Network [OSTI]

    sont : · deux salles de Macintosh avec un serveur; · une salle de terminaux reliés au VAX 8600; · une

  18. Stiebel Eltron: Order (2010-CE-1711)

    Broader source: Energy.gov [DOE]

    DOE ordered Stiebel Eltron, Inc. to pay a $5,000 civil penalty after finding Stiebel Eltron had failed to certify that certain models of water heaters comply with the applicable energy conservation standards.

  19. Stiebel Eltron: Proposed Penalty (2010-CE-1711)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Stiebel Eltron, Inc. failed to certify a variety of water heaters as compliant with the applicable energy conservation standards.

  20. Amerikooler: Proposed Penalty (2013-CE-5307)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Amerikooler, Inc. failed to certify walk-in cooler or freezer (WICF) components as compliant with the energy conservation standards.

  1. Sanyo Electric: Proposed Penalty (2010-CE-1210)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Sanyo Electric Co. failed to certify a variety of refrigerators, refrigerator-freezers, and freezers as compliant with the applicable energy conservation standards.

  2. September 1, 2013 CE Track Principles

    E-Print Network [OSTI]

    Bushman, Frederic

    outcomes, enhancing the delivery of clinical care for patients enrolled in these studies or aiding a scholarly and educational focus in the setting of roles that are primarily based on clinical effort, or clinical or educational administration. Scholarship is described as follows: Contributions to original

  3. Sylvania: Proposed Penalty (2013-CE-2603)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Osram Sylvania Inc. failed to certify a variety of general service fluorescent lamps as compliant with the applicable energy conservation standards.

  4. Haier: Proposed Penalty (2011-CE-2104)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Haier America Trading LLC failed to certify various residential clothes dryers as compliant with the applicable energy conservation standards.

  5. Danby Products: Proposed Penalty (2012-CE-1415)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Danby Products, Inc. failed to certify refrigerators and freezers as compliant with the energy conservation standards.

  6. Danby Products: Order (2012-CE-1415)

    Broader source: Energy.gov [DOE]

    DOE ordered Danby Products to pay a $9,900 civil penalty after finding Danby had failed to certify that certain models of refrigerators and freezers comply with the applicable energy conservation standard.

  7. American Cooler Technologies: Order (2013-CE-5305)

    Broader source: Energy.gov [DOE]

    DOE ordered American Cooler Technologies to pay a $8,000 civil penalty after finding American Cooler Technologies had failed to certify that certain models of walk-in coolers or freezers (WICF) components comply with the applicable energy conservation standards.

  8. MC Appliance: Order (2012-CE-1508)

    Broader source: Energy.gov [DOE]

    DOE ordered CNA International Inc. d/b/a MC Appliance Corporation to pay a $8,000 civil penalty after finding MC Appliance had failed to certify that certain models of room air conditioners comply with the applicable energy conservation standards.

  9. Minka-Aire: Order (2014-CE-32018)

    Broader source: Energy.gov [DOE]

    DOE ordered Minka Lighting Inc. to pay a $8,000 civil penalty after finding Minka had failed to certify that certain models of ceiling fans comply with the applicable energy conservation standards.

  10. USA Manufacturing: Order (2013-CE-5336)

    Broader source: Energy.gov [DOE]

    DOE ordered USA Manufacturing to pay a $8,000 civil penalty after finding USA Manufacturing had failed to certify that certain models of walk-in cooler and freezer components comply with the applicable energy conservation standards.

  11. USA Manufacturing: Proposed Penalty (2013-CE-5336)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that USA Manufacturing failed to certify walk-in cooler or freezer components as compliant with the energy conservation standards.

  12. Hisense USA: Order (2010-CE-1211)

    Broader source: Energy.gov [DOE]

    DOE issued an Order after entering into a Compromise Agreement with Hisense USA Corp. after finding Hisense USA had failed to certify that certain models of residential refrigerators, refrigerator-freezers, and freezers comply with the applicable energy conservation standards.

  13. Euro Chef USA: Order (2014-CE-23004)

    Broader source: Energy.gov [DOE]

    DOE ordered Euro Chef USA Inc. to pay a $8,000 civil penalty after finding Euro Chef USA had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  14. Hisense USA: Proposed Penalty (2010-CE-1211)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Hisense USA Corp. failed to certify a variety of residential refrigerators, refrigerator-freezers, and freezers as compliant with the applicable energy conservation standards.

  15. Golden Opportunity: Proposed Penalty (2014-CE-20003)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Golden Opportunity, Inc. failed to certify room air conditioners, central air conditioners/heat pumps, and residential clothes washers as compliant with the applicable energy conservation standards.

  16. MC Appliance: Proposed Penalty (2014-CE-20002)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that MC Appliance Corporation failed to certify residential clothes washers and residential clothes dryers as compliant with the applicable energy conservation standards.

  17. Nostalgia Products: Proposed Penalty (2014-CE-14017)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Nostalgia Products Group, LLC failed to certify a variety of consumer refrigerators and refrigerator-freezers as compliant with the applicable energy conservation standards.

  18. Whirlpool: Proposed Penalty (2014-CE-21010)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Whirlpool Corporation failed to certify residential clothes dryers as compliant with the applicable energy conservation standards.

  19. Goodman: Proposed Penalty (2012-CE-1509)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Goodman Manufacturing Company, L.P., failed to certify a various room air conditioners as compliant with the applicable energy conservation standards.

  20. Goodman Manufacturing: Order (2012-CE-1509)

    Broader source: Energy.gov [DOE]

    DOE ordered Goodman Manufacturing Company L.P. to pay an $8,000 civil penalty after finding Goodman Manufacturing had failed to certify that certain room air conditioners comply with the applicable energy conservation standard.

  1. Mercredi 15 Dcembre 2010 En ce moment

    E-Print Network [OSTI]

    Heller, Eric

    ... Forum environnement : posez vos questions Biographies : portraits de personnalités Eco-gestes : cartes! Ship to Door Free www.MicroscopeNet.c The Microscope Depot Select The Right Microscope For You . Lowest Price. Free Shipping. Microscope-Depot.com Professional Microscopes Biological, Stereo, Digital, Hobby

  2. Keystone: Proposed Penalty (2013-CE-2601)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Keystone Technologies, LLC failed to certify a variety of fluorescent lamp ballasts as compliant with the applicable energy conservation standards.

  3. Duracold Refrigeration Manufacturing: Order (2013-CE-5342)

    Broader source: Energy.gov [DOE]

    DOE ordered Duracold Refrigeration Manufacturing Company, LLC to pay a $8,000 civil penalty after finding Duracold Refrigeration Manufacturing had failed to certify that certain models of walk-in cooler and freezer components comply with the applicable energy conservation standards.

  4. Cospolich Refrigerator: Order (2013-CE-5314)

    Broader source: Energy.gov [DOE]

    DOE ordered Cospolich Refrigerator Co, Inc. to pay a $8,000 civil penalty after finding Cospolich Refrigerator had failed to certify that certain models of walk-in cooler and freezer components comply with the applicable energy conservation standards.

  5. International Refrigeration: Proposed Penalty (2012-CE-1510)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that International Refrigeration Products failed to certify a various room air conditioners as compliant with the applicable energy conservation standards.

  6. Refrigerator Manufacturers: Proposed Penalty (2013-CE-5341)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Refrigerator Manufacturers, LLC failed to certify a variety of walk-in cooler or freezer components as compliant with the applicable energy conservation standards.

  7. International Refrigeration: Order (2012-CE-1510)

    Broader source: Energy.gov [DOE]

    DOE ordered International Refrigeration Products to pay an $8,000 civil penalty after finding International Refrigeration had failed to certify that certain room air conditioners comply with the applicable energy conservation standard.

  8. Commercial Refrigerator Door: Order (2013-CE-5351)

    Broader source: Energy.gov [DOE]

    DOE ordered Commercial Refrigerator Door Company, Inc. to pay a $8,000 civil penalty after finding Commercial Refrigerator Door had failed to certify that a variety of models of walk-in cooler and freezer components comply with the applicable energy conservation standards.

  9. Refrigerator Manufacturers: Order (2013-CE-5341)

    Broader source: Energy.gov [DOE]

    DOE ordered Refrigerator Manufacturers, LLC to pay a $8,000 civil penalty after finding Refrigerator Manufacturers had failed to certify that certain models of walk-in cooler and freezer components comply with the applicable energy conservation standards.

  10. Cospolich Refrigerator: Proposed Penalty (2013-CE-5314)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Cospolich Refrigerator Co, Inc. failed to certify walk-in cooler or freezer components as compliant with the energy conservation standards.

  11. North Star Refrigerator: Order (2013-CE-5355)

    Broader source: Energy.gov [DOE]

    DOE ordered North Star Refrigerator Co., Inc. to pay a $8,000 civil penalty after finding North Star Refrigerator had failed to certify that any basic models of walk-in cooler and freezer components comply with the applicable energy conservation standards.

  12. Aero-Tech: Order (2010-CE-1012)

    Broader source: Energy.gov [DOE]

    DOE issued an Order and closed this case against Aero-Tech Light Bulb Co., without civil penalty, after DOE found that Aero-Tech manufactured and/or privately labeled incandescent reflector lamps, but did not violate DOE regulations.

  13. CE Turbo Geothermal Facility | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomassSustainable andBucoda,BurkeNebraska:CDM SustainableRelocation Permits toTurbo

  14. Microsoft Word - hCE1.doc

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighandSWPA / SPRA / USACE625Data ShowC - Patent Rights - Fig. U.S.May

  15. Linac Coherent Light SourCe

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking ofOil & Gas »ofMarketing | Department ofEnergyEnergy9Linac Coherent

  16. CE: No. 3 2014 | ornl.gov

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced. C o w l i t z C o . C l a r k C o'IUHopper c ompute n odesCLEAN

  17. CE: No. 4, 2014 | ornl.gov

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced. C o w l i t z C o . C l a r k C o'IUHopper c ompute n odesCLEAN4,

  18. CE: No. 5, 2015 | ornl.gov

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced. C o w l i t z C o . C l a r k C o'IUHopper c ompute n

  19. Oak Ridge Field O%ce

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA groupTuba City, Arizona, DisposalFourthN V O 1 8 7 +NewAugust 4, 1992DOC F ' ;fz;

  20. Syntheses, Structure, Magnetism, and Optical Properties of the Ordered Interlanthanide Copper Chalcogenides Ln{sub 2}YbCuQ{sub 5} (Ln = La, Ce, Pr, Nd, Sm; Q = S, Se): Evidence for Unusual Magnetic Ordering in Sm{sub 2}YbCuS{sub 5}

    SciTech Connect (OSTI)

    Jin, Geng Bang; Choi, Eun Sang; Guertin, Robert P.; Booth, Corwin H.; Albrecht-Schmitt, Thomas E.

    2010-11-19T23:59:59.000Z

    Ln{sub 2}YbCuQ{sub 5} (Ln = La, Ce, Pr, Nd, Sm; Q = S, Se) have been prepared by direct reaction of the elements in Sb{sub 2}Q{sub 3} (Q = S, Se) fluxes at 900 °C. All compounds have been characterized by single-crystal X-ray diffraction methods and they are isotypic. The structure of Ln{sub 2}YbCuQ{sub 5} consists of one-dimensional {sup 1}{sub {infinity}} [YbCuQ{sub 5}]{sup 6-} ribbons extending along the b axis that are connected by larger Ln{sup 3+} ions. Each ribbon is constructed from two single chains of [YbQ{sub 6}] octahedra with one double chain of [CuQ{sub 5}] trigonal bipyramids in the middle. All three chains connect with each other via edge-sharing. There are two crystallographically unique Ln atoms, one octahedral Yb site, and two disordered Cu positions inside of distorted Q{sub 5} trigonal bipyramids. Both Ln atoms are surrounded by eight Q atoms in bicapped trigonal prisms. The magnetic properties of Ln{sub 2}YbCuQ{sub 5} have been characterized using magnetic susceptibility and heat capacity measurements, while their optical properties have been explored using UV-vis-NIR diffuse reflectance spectroscopy. Cesub 2}YbCuSe{sub 5}, La{sub 2}YbCuS{sub 5}, Ce{sub 2}YbCuS{sub 5}, and Pr{sub 2}YbCuS{sub 5} are Curie-Weiss paramagnets. La{sub 2}YbCuSe{sub 5} and Nd{sub 2}YbCuS{sub 5} show evidence for short-range antiferromagnetic ordering at low temperatures. Sm{sub 2}YbCuS{sub 5} shows magnetic ordering at 5.9 K, followed by negative magnetization at low external fields. The band gaps of La{sub 2}YbCuSe{sub 5}, Ce{sub 2}YbCuSe{sub 5}, La{sub 2}YbCuS{sub 5}, Ce{sub 2}YbCuS{sub 5}, Pr{sub 2}YbCuS{sub 5}, Nd{sub 2}YbCuS{sub 5},and Sm{sub 2}YbCuS{sub 5} are 1.15 eV, 1.05 eV, 1.45 eV, 1.37 eV, 1.25 eV, 1.35 eV, and 1.28 eV respectively.

  1. Thng 9, 2011 Xu t b n b i O ce of International A airs M i thng tin trong t ri ny u c trn m ng. c thng tin chi ti t v c p nh t, xin vui lng

    E-Print Network [OSTI]

    Wu, Yih-Min

    Tháng 9, 2011 Xu t b n b i O ce of International A airs M i thông tin trong t ri này u có trên m ng. có thông tin chi ti t và c p nh t, xin vui lòng tra c u t i website c a chúng tôi : httpThông tin nhanh NTU, tr ng i h c t ng h p l n nh t và lâu i nh t ài Loan, ã thông báo các chng trình ào

  2. Temperature-Dependent Young's modulus, shear modulus and Poisson's ratio of p-type Ce0.9Fe3.5Co0.5Sb12 and n-type Co0.95Pd0.05Te0.05Sb3 Skutterudite Thermoelectric Materials

    SciTech Connect (OSTI)

    Schmidt, Robert [Michigan State University, East Lansing; Case, Eldon D [Michigan State University, East Lansing; Ni, Jennifer E. [Michigan State University, East Lansing; Trejo, Rosa M [ORNL; Lara-Curzio, Edgar [ORNL

    2012-01-01T23:59:59.000Z

    Effective models of the mechanical behavior of thermoelectric materials under device conditions require knowledge of the temperature-dependent elastic properties.Between room temperature and 600 K, Resonant Ultrasound Spectroscopy (RUS) measurements of the Young s and shear moduli of three skutterudite thermoelectric materials, n-type Co0.95Pd0.05Te0.05Sb3(both with and without 0.1 atomic % cerium dopant) and p-type Ce0.9Fe3.5Co0.5Sb12, decreased linearly with temperature at a rate between -0.011 GPa/K and -0.013 GPa/K. In contrast the Poisson s ratio was approximately 0.22 for the three materials and was relatively insensitive to temperature.For temperatures > 600 K, the elastic moduli decreased more rapidly and resonance peaks broadened indicating the onset of viscoelastic behavior.The viscoelastic relaxation of the moduli was least for Ce-doped n-type material, for which grain boundary precipitates may inhibit grain boundary sliding which in turn has important implications concerning creep resistance. In addition, powder processing of the n- and p-type materials should be done cautiously since submicron-sized powders of both the n- and p-type powders were pyrophoric

  3. Introduction to Nuclear Engineering CE497-1 CE Project (Undergraduate Students)

    E-Print Network [OSTI]

    Ervin, Elizabeth K.

    , and systems. Topics include history, fission, design principles, reactor systems, health physics, risk

  4. Bright three-band white light generated from CdSe/ZnSe quantum dot-assisted Sr{sub 3}SiO{sub 5}:Ce{sup 3+},Li{sup +}-based white light-emitting diode with high color rendering index

    SciTech Connect (OSTI)

    Jang, Ho Seong; Kwon, Byoung-Hwa; Jeon, Duk Young [Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 373-1, Guseong-dong, Yuseong-gu, Daejeon 305-701 (Korea, Republic of); Yang, Heesun [Department of Materials Science and Engineering, Hongik University, 72-1, Sangsu-dong, Mapo-gu, Seoul 121-791 (Korea, Republic of)

    2009-10-19T23:59:59.000Z

    In this study, bright three-band white light was generated from the CdSe/ZnSe quantum dot (QD)-assisted Sr{sub 3}SiO{sub 5}:Ce{sup 3+},Li{sup +}-based white light-emitting diode (WLED). The CdSe/ZnSe core/shell structure was confirmed by energy dispersive x-ray spectroscopy and x-ray photoelectron spectroscopy. The CdSe/ZnSe QDs showed high quantum efficiency (79%) and contributed to the high luminous efficiency ({eta}{sub L}) of the fabricated WLED. The WLED showed bright natural white with excellent color rendering property ({eta}{sub L}=26.8 lm/W, color temperature=6140 K, and color rendering index=85) and high stability against the increase in forward bias currents from 20 to 70 mA.

  5. Temperature dependent near infrared ultraviolet range dielectric functions of nanocrystalline (Na{sub 0.5}Bi{sub 0.5}){sub 1?x}Ce{sub x}(Ti{sub 0.99}Fe{sub 0.01})O{sub 3} films

    SciTech Connect (OSTI)

    Zhang, S.; Zhang, J. Z.; Han, M. J.; Li, Y. W.; Hu, Z.G., E-mail: zghu@ee.ecnu.edu.cn; Chu, J. H. [Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronic Engineering, East China Normal University, Shanghai 200241 (China)

    2014-01-27T23:59:59.000Z

    Optical properties and phase transition of Ce-modified (Na{sub 0.5}Bi{sub 0.5})(Ti{sub 0.99}Fe{sub 0.01})O{sub 3} nanocrystalline films have been investigated by spectroscopic ellipsometry from ?70 to 500?°C. Temperature dependent dielectric functions in the photon energy range of 0.6–6.4?eV can be derived by the Tauc-Lorentz model. It was found that the features in dielectric function (?) showed an abrupt variation near 200 and 340?°C, respectively. The phenomena can be explained by the appearance and/or reversal of polarization. It indicates that ferroelectric (rhombohedral) to paraelectric (tetragonal) phase transition is related to electronic band variation, which is observed by this technique.

  6. NATIONAL BUREAU OF STANDARDS GAITHERSBURG, MARYLAND

    E-Print Network [OSTI]

    "Honeywell Trusted ADP Systems," Irma Wyman, Honeywell "Computer Security Research at Digital," Paul A Corporation "Kernelized Secure Operating System (KSOS-6)," Charles H. Bonneau, Honeywell ii S-1 #12;Third

  7. Celebration of Design Class of 2013

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    . Personal Flotation Device for People with Cerebral Palsy. Philipp Ross 4. Wyman Zhao 1. Dr. Hiroki Sayama 1. Dr. Steen Rasmussen Personal fabricators are devices on the Socioeconomic Effects of Personal Fabricators ........................................................... 2 8

  8. Effects of the primary passage on the flow through the secondary passage of a shrouded-impeller pump

    E-Print Network [OSTI]

    Wyman, Nicholas James

    1994-01-01T23:59:59.000Z

    EFFECTS OF THE PRIMARY PASSAGE ON THE FLOW THROUGH THE SECONDARY PASSAGE OF A SHROUDED-IMPELLER PUMP A Thesis by NICHOLAS JAMES WYMAN Submitted to the Office of Graduate Studies of Texas AkM University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE August 1994 Major subject: Mechanical Engineering EFFECTS OF THE PRIMARY PASSAGE ON THE FLOW THROUGH THE SECONDARY PASSAGE OF A SHROUDED-IMPELLER PUMP A Thesis by NICHOLAS JAMES WYMAN Submitted...

  9. Geology and Hydrogeology of Carbonate Islands. Developments in Sedimentology 54 edited by H.L. Vacher and T. Quinn

    E-Print Network [OSTI]

    González, Luis A.

    between Puerto Rico and Hispaniola in the northeastern Caribbean Sea (Fig. 9-1). It is located 72 km west Atlantic~ ~lJ / _~°//~ \\ 3ooo- --~- r :.... .....~'~Ocean ~ \\~~(y,,.,.....~,,.,.....~ _ __k'-2000~ i~"Hispaniola

  10. Stimuli materials from Roediger, H.L., & Karpicke, J.D. (2006b). Test-enhanced learning: Taking memory tests

    E-Print Network [OSTI]

    dwarf star. It is fueled by thermonuclear reactions near its center that convert hydrogen to helium temperature will fall. The higher temperature of the center will increase the rate of thermonuclear reactions to exist. Once the Sun has used up its thermonuclear energy as a red giant, it will begin to shrink. After

  11. Microdomains, solid solutions and the {open_quotes}defect fluorite{close_quotes} to C-type sesquioxide transition in CeO{sub 2}-RO{sub 1.5} and ZrO{sub 2}-RO{sub 1.5} systems

    SciTech Connect (OSTI)

    Withers, R.L.; Thompson, J.G.; Gabbitas, N.; Wallenburg, L.R.; Welberry, T.R. [Australian National Univ., Canberra (Australia)] [Australian National Univ., Canberra (Australia)

    1995-12-01T23:59:59.000Z

    Satellite dark field (SDF) imaging is used to show that there is a definite change in symmetry on moving across the two phase region separating the so-called {open_quotes}defect fluorite{close_quotes} and C-type sesquioxide solid solution regions in (1-x)CeO{sub 2}.xRO{sub 1.5} and (1-x)ZrO{sub 2}.xRO{sub 1.5} systems. SDF images of the {open_quotes}defect fluorite{close_quotes} side of the two-phase region are characterized by a microdomain texture on the {approximately}100-200 {angstrom} scale and the local symmetry within any one of these microdomains is shown to be lower than cubic. Corresponding SDF images of the C-type sesquioxide side of the two-phase region are by contrast homogeneous and consistent with Ia3 space group symmetry. The nature of the local oxygen vacancy distribution on either side of the two-phase region is discussed and a possible model for the {open_quotes}defect fluorite{close_quotes} side of the two-phase region proposed.

  12. Carrier contribution to the specific heat coefficient of Sr 1 ? x K x Fe 1 ? x As 2

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

    Wei, F. Y.; Lv, B.; Chen, F.; Xue, Y. Y.; Chu, C. W.

    2011-01-01T23:59:59.000Z

    The carrier contribution to the specific heat coefficient, Ce/T, of Sr1-xKxFe1-xAs? with 0?x?1 has been determined. The Ce/T at the optimal doping level appears to be T-independent above the superconducting transition temperature Tc. Systematic reductions and increases with cooling below 100 K, on the other hand, characterize the underdoped and overdoped samples, respectively. As the result, the low-T limit of the normal-state Ce/T increases almost linearly with x by a factor of 3 over 0 ?x?1. However, the Ce/T suppression across the magnetostructure transition of the underdoped samples is actually negligibly small. In particular, the extracted ?H-?L at x=0, which should include all suppression effects, is comparable to or even smaller than that of x=0.15, where ?H and ?L are the high- and low-T limits of the normal-state Ce/T. Therefore, it appears that, while the magnetostructure transition still plays a role, it may not be the main factor behind the Ce/T evolution.

  13. Ohio Klingon War Journal Issue 3

    E-Print Network [OSTI]

    1991-01-01T23:59:59.000Z

    cost of a subscription !,/il] be 12 first clast tlamPs or S3.50 starting \\,ith Volume 2 which will kick off vith the Janlsrg 1992 lssue. Star Trek: The Nex't Generation h.s returned and .s $/e \\rere promised, there vare several interesting turns... in touch viih some of the members from other places in the rt.te. Debbie Mark look for it here on the front page of the 0Hl0 Klingon Var To kick off the new columns which rll/e h:ve plinned, ve are .re devoting a portio^ of the 'p.ce normall...

  14. Haier: Order (2011-CE-2104) | Department of Energy

    Energy Savers [EERE]

    to certify that Haier residential clothes dryers comply with the applicable energy conservation standard. The Order adopted a Compromise Agreement, which reflected settlement...

  15. Electrolux: Order (2012-CE-1901) | Department of Energy

    Office of Environmental Management (EM)

    had failed to certify that certain dishwashers comply with the applicable energy conservation standard. The Order adopted a Compromise Agreement, which reflected settlement...

  16. Whirlpool: Order (2014-CE-21010) | Department of Energy

    Energy Savers [EERE]

    that certain models of residential clothes dryers comply with the applicable energy conservation standards. The Order adopted a Compromise Agreement, which reflected settlement...

  17. Fisher & Paykel: Order (2014-CE-23012) | Department of Energy

    Energy Savers [EERE]

    to certify that certain models of cooking products comply with the applicable energy conservation standards. The Order adopted a Compromise Agreement, which reflected settlement...

  18. Danby Products: Order (2012-CE-1415) | Department of Energy

    Office of Environmental Management (EM)

    that certain models of refrigerators and freezers comply with the applicable energy conservation standard. The Order adopted a Compromise Agreement, which reflected settlement...

  19. Metl-Span: Proposed Penalty (2013-CE-5352)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Metl-Span LLC failed to certify a variety of walk-in cooler or freezer components as compliant with the applicable energy conservation standards.

  20. Golden Opportunity: Order (2014-CE-20003) | Department of Energy

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

    Golden Opportunity had failed to certify that certain models of room air conditioners, central air conditionersheat pumps, and residential clothes washers comply with the...

  1. Purcell-Murray: Proposed Penalty (2014-CE-23019)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Purcell-Murray Company, Inc., failed to certify cooking products as compliant with the applicable energy conservation standards.

  2. On preconditioning strategies for geotechnics C.E. Augarde

    E-Print Network [OSTI]

    Augarde, Charles

    : Iterative solvers are of increasing interest in geomechanics with the move towards 3D finite element not been widely adopted in geomechanics due to problems with convergence. This paper reviews the background material models, which form the basis for most complex material models used in geomechanics. We

  3. Qu'est-ce qu'un crime de masse ?

    E-Print Network [OSTI]

    Boyer, Edmond

    atrocités commises par des soldats contre d'autres soldats dans la dyna- mique même du combat2 : car il

  4. Innovative Concept Appliances: Proposed Penalty (2010-CE-03/0415)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Innovative Concept Appliances, LLC, failed to certify a variety of residential clothes washers and clothes dryers as compliant with the applicable energy conservation standards.

  5. Felix Storch: Proposed Penalty (2010-CE-03/04/0613)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Felix Storch, Inc. failed to certify a variety of residential dishwashers, clothes washers and dryers as compliant with the applicable energy conservation standards.

  6. ASKO Appliances: Proposed Penalty (2010-CE-04/0614)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that ASKO Appliances, Inc. failed to certify a variety of residential dishwashers and clothes dryers as compliant with the applicable energy conservation standards.

  7. Jandy Pool Products: Proposed Penalty (2010-CE-1111)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Jandy Pool Products, Inc. failed to certify a variety of pool heaters as compliant with the applicable energy conservation standards.

  8. Ce que le jour doit la nuit Vronique PERES

    E-Print Network [OSTI]

    Boyer, Edmond

    laisser distraire par la couleur (tableau de Magritte). Les contemporains de Rembrandt font triompher le

  9. Midea Washing Appliance: Proposed Penalty (2011-CE-1903)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Midea Washing Appliances Mfg. Co., Ltd. failed to certify a variety of dishwashers as compliant with the applicable water and energy conservation standards.

  10. Elmira Stove Works: Proposed Penalty (2011-CE-1407)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Elmira Stove Works failed to certify refrigerator-freezers as compliant with the energy conservation standards.

  11. Qu'est-ce que c'est le climat?

    E-Print Network [OSTI]

    Lovejoy, Shaun

    réchauffement anthropogenique dérange notre sen/ment de place et d'importance. -Copernic-arguments superficiellement scien/fiques.... #12;Ca a commencer avec Copernic: les hélioscep

  12. University of oxford & CUlham sCienCe Centre

    E-Print Network [OSTI]

    Ation entrepreneuriAl connections Aerospace expertise to fusion cooling technology that optimises the heat flow ireland's group (department of engineering) has considerable experience in the cooling technology used supplies, including the uK's 2020 energy targets. "The University of Oxford attracts world

  13. Trastar: Proposed Penalty (2013-CE-49003) | Department of Energy

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

    Civil Penalty that Trastar Inc. failed to certify a variety of basic models of traffic signal modules and pedestrian modules as compliant with the applicable energy conservation...

  14. Peerless-Premier: Proposed Penalty (2014-CE-23007)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Peerless-Premier Appliance Co. failed to certify cooking products as compliant with the applicable energy conservation standards.

  15. CIVIL&ENVIRONMENTAL CE / ENE OVERVIEW MAJORS & AREAS OF EMPHASIS

    E-Print Network [OSTI]

    Rohs, Remo

    , industrial facilities -- and addressing the problems of ground water and air pollution as well as industrial: transportation systems, water supply, waste disposal systems and industrial and commercial structures. They face, construction engineering and management and environmental engineering. Environmental engineers provide safe

  16. CIVIL&ENVIRONMENTAL CE / ENE OVERVIEW PROGRAMS AVAILABLE

    E-Print Network [OSTI]

    Rohs, Remo

    , industrial facilities -- and addressing the problems of ground water and air pollution as well as industrial: transportation systems, water supply, waste disposal systems and industrial and commercial structures. They face, construction engineering and management and environmental engineering. Environmental Engineering is concerned

  17. civil & environmental ce / ene overview majors & areas of emphasis

    E-Print Network [OSTI]

    Rohs, Remo

    , industrial facilities -- and addressing the problems of ground water and air pollution as well as industrial: transportation systems, water supply, waste disposal systems and industrial and commercial structures. They face, construction engineering and management and environmental engineering. Environmental Engineering is concerned

  18. CeMEB in progress Highlights in midterm from

    E-Print Network [OSTI]

    Johannesson, Henrik

    10 Human impact and evolution 14 Managing genetic resources 16 Understanding the ways of nature 20 a ected by natural changes, but also by human activites such as shery and global warming. is raises it can help forecast the e ects of human impact on biodiversity. ­ New techniques for decoding DNA

  19. Kingspan Insulated Panels: Proposed Penalty (2013-CE-5353)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Kingspan Insulated Panels, Inc. failed to certify a variety of walk-in cooler or freezer components as compliant with the applicable energy conservation standards.

  20. In this Issue New, CeBiTec Newsletter

    E-Print Network [OSTI]

    Moeller, Ralf

    of Microbial Genome Research relevant for Biotechnology and Medicine Sugar beet genome sequence published in Nature An environmental bacterial taxon with a large and distinct metabolic repertoire Full day education for high school teachers in Synthetic Biology/Biotechnology Annual Retreat CLIB-Graduate Cluster

  1. R-Cold: Proposed Penalty (2013-CE-5354)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that R-Cold, Inc. failed to certify a variety of walk-in cooler or freezer components as compliant with the applicable energy conservation standards.

  2. OCCURRE CE OF A RATFISH I THE COLUMBIA RIVER ESTUARY

    E-Print Network [OSTI]

    swimming at the surface in southeastern Alaska and British Columbia waters (Goode and Bean, 1895). Maximum of the river. They were fishing for salmon in 8 m of water with a dacron gillnet of 8 %-inch mesh- ever, our monitoring station, 3.2 km farther up- stream, indicated a water temperature of 13.4°C

  3. In this Issue CeBiTec Symposium: Molecular Biotechnology

    E-Print Network [OSTI]

    Moeller, Ralf

    or the change from a petrol-based to a bio-based economy'. Examples of research developments in this field

  4. EIS-0497: CE FLNG Project, Plaquemines Parish, Louisiana

    Broader source: Energy.gov [DOE]

    The Federal Energy Regulatory Commission (FERC) is preparing, with DOE as a cooperating agency, an EIS to analyze the potential environmental impacts of a proposal to construct and operate a liquefied natural gas terminal in Plaquemines Parish, Louisiana, and approximately 37 miles of 42-inch diameter natural gas transmission pipeline to connect the terminal to natural gas infrastructure facilities.

  5. Dans ce numro Jean-Daniel Bonjour 1

    E-Print Network [OSTI]

    'outil informatique dès ses débuts3, le DGRafaitunlargeusage,jusqu'àla fin des années 70, des moyens 1 VAX 11/750 de l

  6. American Cooler Technologies: Proposed Penalty (2013-CE-5305)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that American Cooler Technologies failed to certify walk-in coolers and freezer (WICF) components as compliant with the energy conservation standards.

  7. BSH Home Appliances: Proposed Penalty (2014-CE-23013)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that BSH Home Appliances Corporation failed to certify cooking products as compliant with the applicable energy conservation standards.

  8. CE 372 Engineering Hydrology and Hydraulics Learning objectives

    E-Print Network [OSTI]

    Rehmann, Chris

    time of concentration in two ways. Compute time of concentration using the kinematic-wave, Kerby for exams. 1. Identify and explain processes in the hydrologic cycle. Carry out a water balance. 2. Define

  9. CE 466/ 566 Highway Geometric Design Fall 2010 Course Syllabus

    E-Print Network [OSTI]

    Hickman, Mark

    Officials (AASHTO), A Policy on Geometric Design of Highways and Streets, 5th Edition, 2004. Other materials Student Code of Conduct, in accordance with the Code of Academic Integrity. This code is published at http

  10. Euro Chef USA: Proposed Penalty (2014-CE-23004)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Euro Chef USA Inc. failed to certify cooking products as compliant with the applicable energy conservation standards.

  11. DuraLamp USA: Proposed Penalty (2010-CE-0912)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that DuraLamp USA, Inc. failed to certify a variety of general service fluorescent lamps as compliant with the applicable energy conservation standards.

  12. Smeg USA: Order (2011-CE-14/1909)

    Broader source: Energy.gov [DOE]

    DOE ordered Smeg USA, Inc. to pay a $6,000 civil penalty after finding Smeg USA had failed to certify that certain models of dishwashers and refrigerators comply with the applicable energy conservation standards.

  13. DuraLamp USA: Order (2010-CE-0912)

    Broader source: Energy.gov [DOE]

    DOE ordered DuraLamp USA, Inc. to pay a $2,500 civil penalty after finding DuraLamp USA had failed to certify that model PAR 30, an incandescent reflector lamp, complies with the applicable energy conservation standards.

  14. Smeg USA: Proposed Penalty (2011-CE-14/1909)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Smeg USA, Inc. failed to certify a variety of dishwashers and refrigerators as compliant with the applicable energy conservation standards.

  15. De'Longhi USA: Order (2010-CE-2114)

    Broader source: Energy.gov [DOE]

    DOE issued an Order after entering into a Compromise Agreement with De'Longhi USA, Inc. to resolve a case involving the failure to certify that a variety of dehumidifiers comply with the applicable energy conservation standards.

  16. De'Longhi USA: Proposed Penalty (2010-CE-2114)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that De'Longhi USA, Inc. failed to certify a variety of dehumidifiers as compliant with the applicable energy conservation standards.

  17. Minka-Aire: Proposed Penalty (2014-CE-32018)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Minka Lighting Inc. failed to certify a variety of ceiling fans as compliant with the applicable energy conservation standards.

  18. Westinghouse Lighting: Notice of Allowance (2010-CE-09/1001)

    Broader source: Energy.gov [DOE]

    DOE issued a Notice of Allowance to Westinghouse Lighting Corporation allowing Westinghouse Lighting to resume distribution of product code 0521000 after Westinghouse Lighting provided new test data performed according to DOE regulations.

  19. Westinghouse Lighting: Order (2010-CE-09/1001)

    Broader source: Energy.gov [DOE]

    DOE ordered Westinghouse Lighting Corporation to pay a $50,000 civil penalty after finding Westinghouse Lighting had failed to certify that certain models of general service flourescent and incandescent reflector lamps comply with the applicable energy conservation standards.

  20. Westinghouse Lighting: Proposed Penalty (2010-CE-09/1001)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Westinghouse Lighting Corporation failed to certify various flourescent and incandescent reflector lamps as compliant with the applicable energy conservation standards.

  1. Westinghouse Lighting: Noncompliance Determination (2010-CE-09/1001)

    Broader source: Energy.gov [DOE]

    DOE issued a Notice of Noncompliance Determination to Westinghouse Lighting Corporation finding that various models of incandescent reflector lamps do not comport with the energy conservation standards.

  2. Westinghouse Lighting: Noncompliance Determination (2010-CE-09/1001)

    Broader source: Energy.gov [DOE]

    DOE issued a Notice of Noncompliance Determination to Westinghouse Lighting Corporation finding that model F40T12/CWE (Westinghouse product code 07521000), a general service fluorescent lamp, and model 15GLOBE/65/2 (Westinghouse product code 3800400), a medium base compact fluorescent lamp, do not comport with the energy conservation standards.

  3. Ramblewood Green: Proposed Penalty (2014-CE-23017) | Department...

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

    July 23, 2014 DOE alleged in a Notice of Proposed Civil Penalty that Ramblewood Green Ltd. failed to certify cooking products as compliant with the applicable energy...

  4. CE 203 Civil Engineering Synthesis I Spring 2006

    E-Print Network [OSTI]

    Rehmann, Chris

    be valuable. 6. Story County recently passed an ordinance requiring anyone buying a keg to register with ID energy only, but some worry that Iran will seek nuclear weapons. Use brainstorming and lateral thinking

  5. CE 4020-Computer Applications in CEE The Survey Tab

    E-Print Network [OSTI]

    Mukherjee, Amlan

    tab using the command OST from the command line - if you cannot already see it next to the Prospector components include: · Direction line · Error ellipse · Known and unknown control points · Network line - connecting known and unknown control points (also called Setups) · Sideshot points and sideshot lines

  6. How clinical prac,ce recommenda,on are developed

    E-Print Network [OSTI]

    Shihadeh, Alan

    to the recommendation outweigh the undesirable effects (or vice versa). ­Con of evidence · Hormone replacement therapy in postmenopausal women · Anti-arrythmic agents

  7. 1K RESERVOIR: EB WELDER, CE69412 REQUALIFICATION

    SciTech Connect (OSTI)

    J. H. Schell

    2005-09-07T23:59:59.000Z

    The EB Welder was qualified to produce the 1K retainer weld in February 2001. Since that time, several parts were replaced and metallography results from a review indicated that the welder was not operating properly. After testing the EB Welder, it was requalified to produce the 1K retainer weld.

  8. Universitt Bielefeld Centrum fr Biotechnologie -CeBiTec

    E-Print Network [OSTI]

    Moeller, Ralf

    of the challenges facing the exploitation of microalgae and cyanobacteria for industrial biotechnology, from as the energy source for production. As well as dealing with ways to optimize the entire production process

  9. International CeBiTec Research Conference September 21st

    E-Print Network [OSTI]

    Moeller, Ralf

    Opening lecture 9.15 - 9.50 Christoph Benning - Learning from algae how to enhance the energy density of biofuel crops Session 2 Systems Design 9.50 - 10.25 Maria Barbosa - Outlook on microalgae production for high biomass yield of microalgae grown in photobioreactors 12.20 - 12.45 Lutz Wobbe - Cellulose

  10. Curtis: Order (2015-CE-14021) | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T,Office of Policy, OAPM | Department of Energy Current Trends in PolicyOrder

  11. Curtis: Proposed Penalty (2015-CE-14021) | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T,Office of Policy, OAPM | Department of Energy Current Trends in

  12. Paragon Sales: Order (2012-CE-1417) | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagementOPAM5Parabolic Trough Parabolic Trough DOE funds solar

  13. Bull Outdoor Products: Order (2015-CE-14014) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China U.S. Department ofJune 2,The BigSidingState and localStudyBuildingsTampa, Florida

  14. Bull Outdoor Products: Proposed Penalty (2015-CE-14014) | Department of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China U.S. Department ofJune 2,The BigSidingState and localStudyBuildingsTampa,

  15. Cal Flame: Order (2015-CE-14015) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China U.S. Department ofJuneWaste To Wisdom: Utilizing ForestProject |February 3, 2015 DOE

  16. Cal Flame: Proposed Penalty (2015-CE-14015) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China U.S. Department ofJuneWaste To Wisdom: Utilizing ForestProject |February 3, 2015

  17. EIS-0497: CE FLNG Project, Plaquemines Parish, Louisiana | 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 DataDepartment of Energy Your Density Isn't Your Destiny:Revised FindingDepartmentDepartment ofDepartment488:PatricioStatement

  18. CE342spring02 The Pennsylvania State University

    E-Print Network [OSTI]

    buckling, web crippling, compact sections · Laterally Unbraced Beam Behavior - elastic/inelastic lateral-torsional buckling · Laterally Unbraced Beam Design Procedures (AISC) · Shear Behavior ­ shear buckling · Shear.1-188 to 16.1-195 (Ch. C), 16.1-203 to 16.1-205 (Ch. E) · General Behavior ­ Euler buckling, elastic

  19. Duracold Refrigeration Manufacturing: Proposed Penalty (2013-CE-5342)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Duracold Refrigeration Manufacturing Company, LLC failed to certify a variety of walk-in cooler or freezer components as compliant with the applicable energy conservation standards.

  20. North Star Refrigerator: Proposed Penalty (2013-CE-5355)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that North Star Refrigerator Co., Inc. failed to certify a variety of walk-in cooler or freezer components as compliant with the applicable energy conservation standards.

  1. Commercial Refrigerator Door: Proposed Penalty (2013-CE-5351)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Commercial Refrigerator Door Company, Inc. failed to certify a variety of walk-in cooler or freezer components as compliant with the applicable energy conservation standards.

  2. Mitsubishi Electric: Proposed Penalty (2011-CE-01/0202)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Mitsubishi Electric & Electronics USA, Inc. failed to certify residential central air conditioners and central air conditioning heat pumps as compliant with the energy conservation standards.

  3. Aero-Tech: Proposed Penalty (2010-CE-1012)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Aero-Tech Light Bulb Co. failed to certify a variety of incandescent reflector lamps as compliant with the applicable energy conservation standards.

  4. AeroSys: Proposed Penalty (2010-CE-01/0201)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that AeroSys, Inc. failed to certify residential central air conditioners and air conditioning heat pumps as compliant with the applicable energy conservation standards.

  5. Eurodib: Order (2014-CE-45001) | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T,OfficeEnd of Year 2010Salt | Department of Energy EstablishingOrder

  6. Eurodib: Proposed Penalty (2014-CE-45001) | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T,OfficeEnd of Year 2010Salt | Department of Energy EstablishingOrderProposed

  7. CE2 Carbon Capital LLC | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomassSustainable andBucoda,BurkeNebraska:CDM SustainableRelocation Permits

  8. International Refrigeration: Order (2012-CE-1510) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment of EnergyIndustry15AmongPartnership for a Hydrogen

  9. LG: Proposed Penalty (2015-CE-14022) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetter Report:40PM toLED Lighting FactsWashers

  10. Legacy: Order (2015-CE-14025) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetter Report:40PMDepartment ofs o u t h e a s t|LearningtoOrder

  11. Legacy: Proposed Penalty (2015-CE-14025) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetter Report:40PMDepartment ofs o u t h e a s

  12. Goodman Manufacturing: Order (2012-CE-1509) | Department of Energy

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

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

  13. Haier: Order (2011-CE-2104) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To: CongestionDevelopmentHEADQUARTERSOutreachApril 23, 2013 DOE8, 2011

  14. Hunter Fan: Proposed Penalty (2014-CE-32008) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To:Department ofOral Testimony of SecretaryBetweenTheMarch 2,the 7 2.0

  15. Sanyo Electric: Order (2010-CE-1210) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin ofEnergy atLLC - FE DKT. 10-160-LNG -Energy Proposed1-E Wholesale Power

  16. Absocold: Order (2010-CE-1212) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartmentDepartment of2 of 5) ALARAManager(December 1982) |SuperiorThe BPD

  17. Sunpentown: Order (2012-CE-1505) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014,Zaleski -BlueprintThis document details the frequently1 1.69May 10,

  18. Electrolux: Order (2012-CE-1901) | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2: Final EnvironmentalCounties, Idaho || Department:June 5, 2013Electrifying YourElectrolux:

  19. Danby Products: Order (2012-CE-1415) | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T,Office of Policy, OAPMMilestone | DepartmentEA Featured TrainingDamianTypeDanby

  20. Almo: Order (2012-CE-1416) | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T, Inc.'s Reply Comments AT&T,FACT S HEETand Inspection ReportAlmo: Order

  1. Prizer-Painter: Order (2014-CE-23005) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHA AdministrativeofDepartmentEnergyLoan lossImproveAugust 19,

  2. Purcell-Murray: Order (2014-CE-23019) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010 |ofDepartment ofPart| Department

  3. Ramblewood Green: Order (2014-CE-23017) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010In addition to 1 |DDOE

  4. Duro Corporation: Order (2014-CE-23009) | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T,Office of Policy,Policy ActDetroit7471Site-WideonDuctless HydronicDuro

  5. Manitowoc Foodservice: Order (2012-CE-5309) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetterEconomyDr.Energy University ManagingEnergyManitowoc

  6. Maxlite: Order (2010-CE-2701) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment3311, 3312), October 20122 DOEDepartment ofMicroalgal

  7. Maxlite: Proposed Penalty (2015-CE-27018) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment3311, 3312), October 20122 DOEDepartment

  8. Thermoelectric Couple Demonstration of (In, Ce)-based Skutterudite

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideoStrategic|Industrial Sector,Department of Energythe UsePowered

  9. BSH Home Appliances: Order (2014-CE-23013) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The FutureComments fromof EnergyBILIWG: ConsistentofDepartment ofDr. DoonBSH

  10. Electrolux: Order (2014-CE-23015) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy Chinaof EnergyImpactOn July 2, 2014 in theGroupJuneThis primer onClothes

  11. Electrolux: Order (2015-CE-14020) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy Chinaof EnergyImpactOn July 2, 2014 in theGroupJuneThis primer onClothesFebruary 19,

  12. Electrolux: Proposed Penalty (2015-CE-14020) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy Chinaof EnergyImpactOn July 2, 2014 in theGroupJuneThis primer onClothesFebruary

  13. California Ethanol Power CE P | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovation inOpen Energy InformationSeriesCachoolEnergy Commission

  14. Approved Module Information for CE3013, 2014/5 Module Title/Name: Particle Processing Module Code: CE3013

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    of measuring particle size and interpreting the results. Removal of particles from air streams ? cyclone design, other methods such as gravity and inertial separators, fabric filters and electrostatic precipitators

  15. Approved Module Information for CE2103, 2014/5 Module Title/Name: Separation Processes Module Code: CE2103

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    processes involving unit operations * Design and sizing of a binary mixture distillation column Indicative of fundamental separation processes * an introduction to the techniques used for the preliminary design of distillation, gas absorption and cooling tower. * Knowledge of the fundamentals and practical applications

  16. Approved Module Information for CE3105, 2014/5 Module Title/Name: Advanced Separation Processes Module Code: CE3105

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    distillation, drying and solvent extraction theory to various design problems * The ability to select * Design work #12;* Problem solving skills Indicative Module Content: Advanced Distillation * Short and flooding; column sizing for percent flood design and low pressure drop design; height of packing equivalent

  17. Approved Module Information for CE2004, 2014/5 Module Title/Name: Transfer Processes Module Code: CE2004

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    * Fundamental processes of mass transfer * Design principles of heat exchangers * Fundamentals of radiant heat * a knowledge of the fundamentals and practical applications of radiative heat transfer * a knowledge of pipe solving * Study skills * Time management Indicative Module Content: Heat Transfer (Dr. John Brammer) Heat

  18. Approved Module Information for CE1002, 2014/5 Module Title/Name: Design and Build Module Code: CE1002

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    1002 School: Engineering and Applied Science Module Type: Standard Module New Module? No Module Credits@aston.ac.uk Telephone Number 3426 Office MBL25A Additional Module Tutor(s): George Drahun. John Brammer. Yassir Makkawi? Not Specified Module Learning Information Module Aims: To introduce students to: the design process, working

  19. DAO O ce Note 1998-04 Version 1 Dated 12/06/1999 O ce Note Series on

    E-Print Network [OSTI]

    Assimilation Siegfried Schubert, Editor Documentation of the Physical-Space Statistical Analysis System (PSAS for the software implementation of the Physical- space Statistical Analysis System (PSAS) that is used. This is mainly due to the diversity of data types and sources, as well as the use of the multivariate formulation

  20. Data:1930475c-e431-4492-94ce-c461d1003207 | Open Energy Information

    Open Energy Info (EERE)

    Public Street Lighting Service - HPSV Double Mastarm Lamp Fixtures - Standard SteelConcrete Pole - Company Owned Sector: Lighting Description: To the City of Independence for...