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  1. Interacci amb camps esttics

    E-Print Network [OSTI]

    Sánchez, David

    , amb els nivells n=2 de l'hidrogen. El corriment lineal es pot interpretar com un dipol elèctric permanent Exemple: àtom de hidrogen dins un camp elèctric nivells amb n = 2 degenerats únic element de

  2. AMB Apparate Maschinenbau GmbH | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LIST OFAMERICA'S FUTURE.EnergyWoodenDate RecCompetitionCenturyWind Power LtdAMB

  3. AUTONOMOUS MOBILE BUOY (A-M-B) COASTAL & LAGOON: autonomous monitoring and sampling

    E-Print Network [OSTI]

    Wood, Stephen L.

    AUTONOMOUS MOBILE BUOY (A-M-B) COASTAL & LAGOON: autonomous monitoring and sampling PI: Stephen, goals and objectives The project objective of this proposal is to develop an Autonomous Mobile Buoy of a prototype autonomous (computer controlled) mobile buoy (A-M-B) to monitor coastal and lagoon areas

  4. Manuel Palomar comparteix amb els exrectors l'actual situaci de la UA Alacant, 30 de novembre de 2012

    E-Print Network [OSTI]

    Escolano, Francisco

    Manuel Palomar comparteix amb els exrectors l'actual situació de la UA Alacant, 30 de novembre de Manuel Palomar s'han reunit aquest matí en el despatx rectoral en una trobada històrica de tots els Palomar, ha volgut compartir amb els seus predecessors la situació per la qual travessa la UA i fer

  5. Recovery of {sup 241}Am/Be neutron sources, Wooster, Ohio

    SciTech Connect (OSTI)

    Tompkins, J.A.; Wannigman, D.; Hatler, V.

    1998-07-01

    In August 1997, the Nuclear Regulatory Commission (NRC) submitted to the US Department of Energy (DOE) a partial list of licensed radioactive sealed sources to be recovered under a pilot project initiating Radioactive Source Recovery Program (RSRP) operations. The first of the pilot project recoveries was scheduled for September 1997 at Eastern Well Surveys in Wooster, Ohio, a company with five unwanted sealed sources on the NRC list. The sources were neutron emitters, each containing {sup 241}Am/Be with activities ranging from 2.49 to 3.0 Ci. A prior radiological survey had established that one of these sources, a Gulf Nuclear Model 71-1 containing 3 Ci of {sup 241}Am, was contaminated with {sup 241}Am and might be leaking. The other four sources were obsolete and could no longer be used by Eastern Well Surveys for their intended application in well-logging applications due to NRC decertification of these sources. All of the sources exceeded the limits established for Class C waste under 10 CFR 61.55 and, as a result, are the ultimate responsibility of the DOE under the provisions of PL 99-240. This report describes the cooperative effort between the DOE and NRC to recover the sources and transport them to Los Alamos National Laboratory (LANL) for deactivation under the RSRP. This operation alleviated any potential risk to the public health and safety from the site which might result from the leaking neutron sources or the potential mismanagement of unwanted sources. The on-site recovery occurred on September 23, 1997, and was performed by personnel from LANL and its contractor and was observed by staff from the Region III office of the NRC. All aspects of the recovery were successfully accomplished, and the sources were received at LANL on September 29, 1997. Experience gained during this operation will be used to formulate operational poilicies and procedures which will contribute to the eventual routine recovery operations of a full-scale RSRP.

  6. 4/18/11 10:39 AMB.C. aspires to lead the country in research and development Page 1 of 6http://www.canada.com/story_print.html?id=713de69a-38b7-48a8-9d50-d96d0aa1142b&sponsor=

    E-Print Network [OSTI]

    4/18/11 10:39 AMB.C. aspires to lead the country in research and development Page 1 of 6http://www.canada.com/story_print.html?id=713de69a-38b7-48a8-9d50-d96d0aa1142b&sponsor= B.C. aspires to lead the country in research for economy, innovation and education" by 2010. #12;4/18/11 10:39 AMB.C. aspires to lead the country

  7. DOE - Office of Legacy Management -- AMB

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and Myers Co -VANaval ,, *' ;x-L*QwnerWeldon

  8. Microsoft Word - AMB 2008-final.doc

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and MyersHr. Anthony V.How DOESampling2007

  9. DOE - Office of Legacy Management -- AMB

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth Dakota Edgemont, South Dakota,You are here Home » Sites11 ENew

  10. Shielding of a 3600 curie AmBe source 

    E-Print Network [OSTI]

    Grimes, Mary Jeanine

    1989-01-01

    INTRODUCTION THEORY V1 vii viii Neutron interactions Gamma interactions Solution to the Boltzmann transport equation Diffusion theorY 6 8 9 16 DESCRIPTION OF THE CODES 19 ANISN TWODANT BS2 19 23 27 PROCEDURE RESULTS SUMMARY AND CONCLUSIONS... compliance in keeping exposures vithin the guidelines stated earlier. THEORY NEVTRON INTERACTIONS Neutrons because of their ability to transfer enerqy to a medium can present a significant hazard to the human body. For this reason, adequate shielding...

  11. Redox control of iron biomineralization in Magnetospirillum magneticum AMB-1

    E-Print Network [OSTI]

    Jones, Stephanie Rhianon

    2015-01-01

    A potential-pH diagram, or Pourbaix diagram, can be used todistribution [36]. Based on its Pourbaix diagram, magnetite

  12. Amb. Linton Brooks Sworn in as NNSA Administrator | National Nuclear

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouthReporteeo | National Nucleara min [Type the abstract of|

  13. Low-Bias Control of AMB Subject to Voltage Saturation: State-Feedback and Observer Designs

    E-Print Network [OSTI]

    Tsiotras, Panagiotis

    Polytechnic Institute Troy, New York, 12180-3590, USA arcak@ecse.rpi.edu Abstract This paper addresses of discharge, heavy weight, limited life, etc. An alternative to the chemical batteries for energy stor- age these spinning wheels to also store energy seems natural and appealing. Several technical challenges need

  14. Low-Bias Control of AMB Subject to Voltage Saturation: State-Feedback and Observer

    E-Print Network [OSTI]

    Tsiotras, Panagiotis

    and storage requirements can be found in [21], [5], [26]. An alternative to the chemical batteries for energy, Computer and Systems Engineering, Rensselaer Polytechnic Institute, Troy, New York, 12180-3590, USA (e control, the prospect of using these wheels to also store energy seems natural and appealing. Several

  15. MCNP6 Dose Calculations for the Carousel in the LDRGIF Using an AmBe Source

    Office of Scientific and Technical Information (OSTI)

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

  16. MCNP6 Dose Calculations for the Carousel in the LDRGIF Using an AmBe Source

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journalspectroscopy ofArticle) |management (Patent)SciTech

  17. Ambient Monitoring for Sinclair and Dyes Inlets, Puget Sound, Washington: Chemical Analyses for 2010 Regional Mussel Watch (AMB02)

    SciTech Connect (OSTI)

    Brandenberger, Jill M.; Kuo, Li-Jung; Suslick, Carolynn R.; Johnston, Robert K.

    2010-10-20

    The Puget Sound Naval Shipyard & Intermediate Maintenance Facility (PSNS&IMF) and Naval Base Kitsap-Bremerton (Shipyard) located in Bremerton, WA are committed to a culture of continuous process improvement for all aspects of Shipyard operations, including reducing the releases of hazardous materials and waste in discharges from the Shipyard. Under the Project ENVVEST Final Project Agreement, a cooperative project among PSNS&IMF, the Environmental Protection Agency (EPA), and the Washington State Department of Ecology (Ecology), and local stakeholders (US Navy, EPA and Ecology 2002) has been helping to improve the environmental quality of the Sinclair and Dyes Inlet Watershed (ENVVEST 2006). An ambient monitoring program for sediment, water, and indigenous mussels began in 2009 to assess the status and trend of ecological resources, assess the effectiveness of cleanup and pollution control measures, and determine if discharges from all sources are protective of beneficial uses including aquatic life. This document presents the 2010 chemical residue data and stable isotopes of carbon (?13C) and nitrogen (?15N) for the regional mussel watch stations located in Sinclair Inlet, Dyes Inlet, Port Orchard Passage, Rich Passage, Agate Passage, Liberty Bay, and Keyport Lagoon. Indigenous bivalves were collected from a small boat and/or from along the shoreline, measured, composited, and analyzed for a suite of trace metals and organic contaminants. The trace metals included silver, arsenic, cadmium, chromium, copper, mercury, nickel, lead, and zinc. The organic contaminants included the list of NOAA Status and Trends 20 polychlorinated biphenyls (PCB) congeners and suite of parent and methylated polycyclic aromatic hydrocarbons (PAHs). These chemical residue data provide the first year of the biota ambient monitoring.

  18. Cursos del Programa Aula Mentor Reconeguts amb crdits de formaci permanent del professorat segons BOE de 12/01/95. Els

    E-Print Network [OSTI]

    Oro, Daniel

    h Agricultura ecològica 60 h Energia de la radiació solar 50 h Energies renovables 130 h Energia solar tèrmica 100 h Energia solar fotovoltaica 70 h Medi ambient Avaluació de l'impacte ambiental 80 h

  19. Sickness behaviour induced with low doses of lipopolysaccharides in dairy calves Borderas, T.F.1,2, A.M.B de Passill1, and J. Rushen1

    E-Print Network [OSTI]

    Farrell, Anthony P.

    . Universidad Autonoma Metropolitana ­ Xochimilco, Mexico Our question: Can behaviour be used to identify

  20. Consumer culture imperialism

    E-Print Network [OSTI]

    De Carvalho, Marcelo Gon?calves

    2010-01-01

    State Department, Top Secret Cable from Amb. Lincoln Gordon,these documents are Top Secret cables sent by US AmbassadorState Department, Top Secret Cable from Amb. Lincoln Gordon,

  1. Departament de Matemtica Aplicada 4 --EPSEVG Universitat Politcnica de Catalunya

    E-Print Network [OSTI]

    Batlle, Carles

    construccions. Tenir una certa familiaritat amb Python pot ser útil, sobretot si es vol efectuar càlculs que

  2. Francesc Bars Cortina Teoria de Galois explicada en 30

    E-Print Network [OSTI]

    Bars, Francesc

    ) CONTINGUT B Aprofundint amb construccions geom`etriques usant teoria de galois 95 B.1 Construcci´o del pol

  3. Fonamentaci Mecnica Quntica

    E-Print Network [OSTI]

    Sánchez, David

    poblacions no té perquè coincidir amb la dimensió de l'espai de kets. #12;Mitjana de col.lectivitat de l

  4. universitaris de l'mbit de la

    E-Print Network [OSTI]

    Verschure, Paul

    tecnologies de la informació de la UPF. Amb una combinació harmònica d'espais reha- bilitats i d'obra nova

  5. CAFETERIA LLISTA DE PREUS CAF INFUSIONS

    E-Print Network [OSTI]

    1 CAFETERIA ­ LLISTA DE PREUS CAFÈ ­ INFUSIONS CAFÈ 0,85 Eur. CAFÈ AMB GEL 0,90 Eur. TALLAT 0 LLET 0,95 Eur. GOT DE LLET 0,95 Eur. TÉ I INFUSIONS 0,75 Eur. INFUSIONS AMB LLET 0,85 Eur. PASTES I

  6. technology offer Research and Transfer Support | Heinz Gdl

    E-Print Network [OSTI]

    Arnold, Anton

    ://www.rt.tuwien.ac.at c.at Fault-tolerant actuator system key words: active magnetic bearing | fault detection | hot and required grade of oversizing. An active magnetic bearing (AMB) application of the proposed technology-channels during operation of the system guaranties 100 % availability Fig. 1: Active magnetic bearing (AMB) system

  7. Metallurgical Laboratory Hazardous Waste Management Facility groundwater monitoring report: First quarter 1992

    SciTech Connect (OSTI)

    Thompson, C.Y.

    1992-06-01

    During first quarter 1992, 18 groundwater monitoring wells of the AMB series at the Metallurgical Laboratory Hazardous Waste Management Facility (Metlab HWMF) at Savannah River Plant were visited for sampling. Groundwater samples were analyzed for certain heavy metals, indicator parameters, radionuclides, volatile organic compounds, and other constituents. This report describes the results that exceeded the US Environmental Protection Agency Primary Drinking Water Standards (PDWS) and the Savannah River Site flagging criteria during the quarter. Tetrachloroethylene exceeded the PDWS in wells AMB 4A, 5, and 7A; trichloroethylene exceeded the PDWS in wells AMB 4A, 4B, 4D, 5, and 7A; and total alpha-emitting radium (radium-224 and radium-226) exceeded the PDWS in well AMB 5. Total organic halogens exceeded the Flag 2 criterion in wells AMB 4A, 5, 6, 7A, 7B, and IODD; manganese was elevated in wells AMB 4D and TODD; iron was elevated in well AMB TODD; and pH was elevated in well AMB 10A.

  8. BorderasBorderas,, T.F.T.F.1, 2, 31, 2, 3, Rushen, J., Rushen, J. 1, 21, 2, von Keyserlingk M.A.G., von Keyserlingk M.A.G. 22, and, and de Passill A.M.B.de Passill A.M.B.1, 21, 2 11 PacificPacific AgriAgri--Food Research Centre, Agassiz, BC, Canada.Food R

    E-Print Network [OSTI]

    Farrell, Anthony P.

    DPAA. Universidad Autonoma Metropolitana ­­ Xochimilco, MexicoXochimilco, Mexico Changes in feeding behavior

  9. Metallurgical Laboratory Hazardous Waste Management Facility groundwater monitoring report. Fourth quarter 1992 and 1992 summary

    SciTech Connect (OSTI)

    Thompson, C.Y.

    1993-03-01

    During fourth quarter 1992, samples from 18 groundwater monitoring wells of the AMB series at the Metallurgical Laboratory Hazardous Waste Management Facility were analyzed for certain heavy metals, indicator parameters, radionuclides, volatile organic compounds, and other constituents. Six parameters exceeded final Primary Drinking Water Standards (PDWS) and the Savannah River Site Flag 2 criteria during the quarter. The results for fourth quarter 1992 are fairly consistent with the rest of the year`s data. Tetrachloroethylene exceeded the final PDWS in well AMB 4D only two of the four quarters; in the other three wells in which it was elevated, it was present at similar levels throughout the year. Trichloroethylene consistently exceeded its PDWS in wells AMB 4A, 4B, 4D, 5, and 7A during the year. Trichloroethylene was elevated in well AMB 6 only during third and fourth quarters and in well AMB 7 only during fourth quarter. Total alpha-emitting radium was above the final PDWS for total radium in well AMB 5 at similar levels throughout the year and exceeded the PDWS during one of the three quarters it was analyzed for (third quarter 1992) in well AMB 10B.

  10. Metallurgical Laboratory Hazardous Waste Management Facility groundwater monitoring report

    SciTech Connect (OSTI)

    Thompson, C.Y.

    1993-03-01

    During fourth quarter 1992, samples from 18 groundwater monitoring wells of the AMB series at the Metallurgical Laboratory Hazardous Waste Management Facility were analyzed for certain heavy metals, indicator parameters, radionuclides, volatile organic compounds, and other constituents. Six parameters exceeded final Primary Drinking Water Standards (PDWS) and the Savannah River Site Flag 2 criteria during the quarter. The results for fourth quarter 1992 are fairly consistent with the rest of the year's data. Tetrachloroethylene exceeded the final PDWS in well AMB 4D only two of the four quarters; in the other three wells in which it was elevated, it was present at similar levels throughout the year. Trichloroethylene consistently exceeded its PDWS in wells AMB 4A, 4B, 4D, 5, and 7A during the year. Trichloroethylene was elevated in well AMB 6 only during third and fourth quarters and in well AMB 7 only during fourth quarter. Total alpha-emitting radium was above the final PDWS for total radium in well AMB 5 at similar levels throughout the year and exceeded the PDWS during one of the three quarters it was analyzed for (third quarter 1992) in well AMB 10B.

  11. Occitan : de l'importance d'tre une langue Patrick SAUZET

    E-Print Network [OSTI]

    Boyer, Edmond

    local and feudal powers and interacted with them (receiving support from them and giving them prestige de poders locals e feudals divèrses, bèls e pichòts, e interagiguèt amb eles. Ne recebèt de sosten e

  12. Dalbavancin: A review for dermatologists

    E-Print Network [OSTI]

    Scheinfeld, Noah

    2006-01-01

    MB, Jabes D, Cavaleri M, Dowell J, Mosconi G, Malabarba A,MB, Goldstein BP, Perry M, Dowell JA, Henkel T; DalbavancinGuanci M, Colombo L, Dowell J, Stogniew M. Pharmacokinetics

  13. An Introduction to SAE Hydrogen Fueling Standardization

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

    Hose Pressure Pressure Ramp Rate Vehicle Temp Example Fill T amb 27.6 o C Gas Temp in tank Control Pressure Hose Pressure Pressure Ramp Rate SAE INTERNATIONAL * The MC Default...

  14. Changing sources of soil respiration with time since fire in a boreal forest

    E-Print Network [OSTI]

    Czimczik, CI; Trumbore, SE; Carbone, MS; Winston, GC

    2006-01-01

    L AMB . Populus tremuloides M ICHX . Salix sp. 1964 w P.mariana P. banksiana Salix sp. Betula papyrifera M ARSH L.The deciduous species (Salix sp. , Populus tremu- loides

  15. Structuring public REIT-sponsored private capital fund : the case of US industrial and retail REITs

    E-Print Network [OSTI]

    Lee, Cervantes (Cervantes Chih-Chieh), 1975-

    2008-01-01

    The private capital business for public REITs was started by Kimco Realty, Developer Diversified, AMB and ProLogis during the years 1998-2000, at the time when the public equity was not easily available. Over the past ...

  16. UBICACIO DELS PUNTS ON ES TRAVESSA L'HOLOC

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    AMB CRITERI A NIVELL HIDRAULIC CAL DETERMINAR: ESTUDI DE LES XARXES DE CONTROL = ¿ON MESUREN? DEFINICIO D'AQUIFERS ASIGNACIO CONCRETA DE PARAMETRES HIDRAULICS RELACIONS ENTRE FACIES LATERALS AQ SUP ­ AQ

  17. The Use of Mini-Vector Instructions for Implementing High-Speed Feedback Controllers on General-Purpose

    E-Print Network [OSTI]

    Huang, Wei

    . Keywords Active magnetic bearing, flywheel, vector instructions, API, multi-threaded execution. 1 application for feedback control is real-time control of active magnetic bearings (AMBs) in a high

  18. Ampliacio de Models Matem`atics de la Fisica Definicions i resultats

    E-Print Network [OSTI]

    Gràcia, Xavier

    . . . . . . . . . . . . . . . . 21 3 Fibrats vectorials 23 3.1 Fibracions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 3.2 Fibrats vectorials . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 3.3 Operacions amb fibrats vectorials . . . . . . . . . . . . . . . . . . . 28 3.4 El fibrat tangent d'una varietat

  19. Ampliacio de Models Matem`atics de la Fisica Definicions i resultats

    E-Print Network [OSTI]

    Gràcia, Xavier

    . . . . . . . . . . . . . . . . 11 3 Fibrats vectorials 12 3.1 Fibracions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.2 Fibrats vectorials . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.3 Operacions amb fibrats vectorials . . . . . . . . . . . . . . . . . . . 14 3.4 El fibrat tangent d'una varietat

  20. Regulation and large motion tracking for active magnetic bearing system using sliding mode control 

    E-Print Network [OSTI]

    Sun, Guangyoung

    1999-01-01

    In this thesis, sliding mode control (SMC), one of nonlinear control theories is designed based on the original nonlinear active magnetic bearing (AMB) system with 4 degrees of freedom. It is applied to the regulation/stabilization and large motion...

  1. PROBLEMES ENERGIES RENOVABLES. INTRODUCCIO Heu de fer servir estimacions raonables.

    E-Print Network [OSTI]

    Batiste, Oriol

    PROBLEMES ENERGIES RENOVABLES. INTRODUCCI´O Heu de fer servir estimacions raonables. PROBLEAM 1`olica ´es la que t´e un creixement m´es important de les renovables. Amb el ritme de creixement actual quan

  2. Department of Electrical Engineering (ESAT) SISTA Technical report 96-90a

    E-Print Network [OSTI]

    ) vehicles during one complete green-amber- red cycle and (at most) #22; #22; 1 (Æ o Æ amb ) + #22; #20; 1 Æ never become equal to 0 (except possibly at the end of a green or an amber phase). In Section C we; #21; 4 )Æ e > (#22;#22; 4 #22; #20; 4 )Æ amb : (42) Together with the conditions Æ min;green;1 6 Æ o Æ

  3. Clonal population structure and genetic diversity of Candida albicans in AIDS patients from Abidjan (Cote d'Ivoire)

    E-Print Network [OSTI]

    2006-01-01

    4, A), G7 (1, B) G3 (5, A) G8 (5, A) G9 (1, A), G10 (1, A),KTZ NYS AMB AMB G7 (5, B) G8 (5, A) G18 (5, A) G19 (5, A)Aat Fk G1 G2 G3 G4 G5 G6 G7 G8 G9 G10 G11 G12 G13 G14 G15

  4. Evaluation of Non-Nuclear Techniques for Well Logging: Final Report

    SciTech Connect (OSTI)

    Bond, Leonard J.; Griffin, Jeffrey W.; Harris, R. V.; Denslow, Kayte M.; Moran, Traci L.

    2011-08-01

    The focus of this study is the understanding of the technical obstacles that hinder the replacement of and the disadvantages from the loss of extensive interpretation experience based on data accumulated with AmBe. Enhanced acoustic and electromagnetic sensing methods in combination with non-isotope-based well logging techniques have the potential to complement and/or replace existing isotope-based techniques, providing the opportunity to reduce oil industry dependence on isotopic sources such as AmBe.

  5. Examination of eukaryotic chaperonin-mediated nascent chain folding in the cytosol: a photocrosslinking approach 

    E-Print Network [OSTI]

    Etchells, Stephanie Anne

    2004-11-15

    ??????????????????????????. 190 xii LIST OF FIGURES FIGURE Page 1 Crystal Structure of GroEL in Complex with Either GroES and ADP or ATP?????????????????.. 8 2 Models for GroEL/GroES Folding of Less Than 60 kDa Proteins and Greater Than 60 k... Chains??. 130 34 Nascent Chain Length Dependence of Photocrosslinking of the TRiC ? Subunit to Actin 50amb Nascent Chains??. 133 35 Photocrosslinking of the TRiC ? Subunit to Actin18-84amb 133mer and 177mer Nascent Chains...

  6. Minimal RED Cell Pairs Markedly Improve Electrode Kinetics and Power Production in Microbial Reverse Electrodialysis Cells

    E-Print Network [OSTI]

    improved compared to microbial fuel cells (MFCs) by using ammonium bicarbonate (AmB) solutions in multiple electrodes used in a microbial fuel cell (MFC) are placed on each side of a reverse electrodialysis (RED increasing power production (Acetate: 4.2 W/m2 ; WW: 1.9 W/m2 ). By maintaining near optimal electrode power

  7. Radiation Source Replacement Workshop

    SciTech Connect (OSTI)

    Griffin, Jeffrey W.; Moran, Traci L.; Bond, Leonard J.

    2010-12-01

    This report summarizes a Radiation Source Replacement Workshop in Houston Texas on October 27-28, 2010, which provided a forum for industry and researchers to exchange information and to discuss the issues relating to replacement of AmBe, and potentially other isotope sources used in well logging.

  8. Font d'energia utilitzada abans de l'era dels combustibles f`ossils. Encara es el combustible majorit`ariament usat per a cuinar i escalfar-se

    E-Print Network [OSTI]

    Batiste, Oriol

    sistema solar amb acumulaci´o integrada · Quin rendiment energ`etic t´e? (fem servir maquin`aria i fertilitzants) #12;BIOMASSA Materia org`anica generada en el vegetals apartir de la llum solar mit- jan¸cant la¨isos poc desenvolupats #12;BIOMASSA: Energia Solar Productivitat prim`aria neta PPN: 75 - 125 TW 3000 EJ

  9. DRAM-Level Prefetching for Fully-Buffered DIMM: Design, Performance and Power Saving

    E-Print Network [OSTI]

    Zhu, Zhichun

    at the first-level connecting the mem- ory controller and Advanced Memory Buffers (AMBs); and DDR2 buses DDR2 DRAM chips. It This work is supported in part by the National Science Foundation under grants CPA and thus provides higher memory bandwidth. Meanwhile, it uses exist- ing DDR2/DDR3 DRAM to avoid the high

  10. Named Entity Recognition for Catalan Using Spanish Resources

    E-Print Network [OSTI]

    Samaranch]pER, se reuni6 el lunes en [Nueva Yorkkoc eon investigadores del [FBI]oRG y del [Departamento de dilluns a [Nova York]Loc amb investigadors del [FBI]oRG i del [Departament de Justicia]oRG." Figure 1

  11. 7. Inscripci Els treballs s'hauran d'enviar des del 2 de mar fins al 30 de maig

    E-Print Network [OSTI]

    Escolano, Francisco

    el format adjunt d'un màxim de dos fulls DIN A4 a espai i mig o 3500 caràcters (sense comptar els espais), i il·lustrat amb fotografies originals de l'experiència, en format JPG i qualitat mínima de 300

  12. Overview of First CAPRI Blind Protein Docking Experiment

    E-Print Network [OSTI]

    Ritchie, Dave

    et al. Rey 3 Hemagglutinin HC63 U/B Barbey-Martin et al. Knossow 4 -Amylase AMD10 U/B Desmyter et al. Cambillau 5 -Amylase AMB7 U/B Desmyter et al. Cambillau 6 -Amylase AMD9 U/B Desmyter et al. Cambillau 7 Spe

  13. Structural Systems Biology Computer Modeling of Protein-Protein Interactions

    E-Print Network [OSTI]

    Ritchie, Dave

    et al. Rey 3 Hemagglutinin HC63 U/B Barbey-Martin et al. Knossow 4 -Amylase AMD10 U/B Desmyter et al. Cambillau 5 -Amylase AMB7 U/B Desmyter et al. Cambillau 6 -Amylase AMD9 U/B Desmyter et al. Cambillau 7 Spe

  14. LaLa milloramillora de lade la qualitatqualitat dede ll''aigua daigua d''abastamentabastament

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    de la utilització de noves tecnologies #12;Situació de la dessalació a Espanya - Cinquè país en el/any). Aplicacions, en curs i futures, de noves tecnologies de tractament en l'àrea metropolitana de de noves tecnologies de membranes. Aplicacions diverses amb importants reduccions de costos d

  15. Institut de Sostenibilitat Universitat Politcnica de Catalunya Informe SIRENA 10

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    manteniment dels campus. L'informe SIRENA 10 se centra en l'energia i l'aigua consumida en els elèctric espanyol dels darrers anys, amb l'augment de la presència de renovables i la presència d'energia nuclear, han facilitat aquesta reducció d'emissions (per contra, l'any 2010 es van

  16. PROBLEMES ER (TERMODIN`AMICA) Els problemes proposats pretenen exemplificar les implicacions dels principis b`asics

    E-Print Network [OSTI]

    Batiste, Oriol

    principis b`asics de la termodin`amica en processos de conversi´o d'energia rellevants per a l'aprof- itament de les energies renovables i l'efi`encia energ`etica, amb independ`encia de la tecnologia concreta-les correspondre a tecnologies existents o potencials. PROBLEAM 1 ­Energia t`ermica acumulada en una banyera

  17. SIRENA 10. Tercer informe SIRENA d'evoluci dels consums energtics i d'aigua a la UPC, corresponent a l'any 2010

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    manteniment dels campus. L'informe SIRENA 10 se centra en l'energia i l'aigua consumida en els elèctric espanyol dels darrers anys, amb l'augment de la presència de renovables i la presència d'energia nuclear, han facilitat aquesta reducció d'emissions (per contra, l'any 2010 es van

  18. PLA UPC SOSTENIBLE 2015 DISTRIBUCI DE FUNCIONS I ROLS

    E-Print Network [OSTI]

    Casanellas, Marta

    'energies renovables des de la pròpia universitat. Coordinació i seguiment execució accions del PIU i priorització/proposta Coordinació de les millores dels equips, instruments i software de monitorització amb UPCNET. Energia Impuls d'Informe SIRENA ­ energia (indicadors i mesura de consums, facturació, recomanacions,...) Integrar a l

  19. Ammonium Bicarbonate Transport in Anion Exchange Membranes for Salinity Gradient Energy

    E-Print Network [OSTI]

    to address global energy needs, such as reverse electro- dialysis1-4 (RED), capacitive energy extraction are the predominant ions in many natural water sources.12 Thermolytic salts, such as aqueous ammonium bicarbonate (AmB), are being considered for salinity gradient energy production because these solutions permit closed

  20. Aging and Health: Hisganic Ame~canElders

    E-Print Network [OSTI]

    Su, Xiao

    -- Aging and Health: Hisganic Ame~canElders Second Edition Ilgarie Luz Villa, MD, Josk Cueklar, Bh have Dr. Marie Luz V i l l a , a g e r i a t r i c physician, take the leadership i n updating Education Center November, 1993 #12;WGiMG AMB HWLTH: HISPANIC AMERICAN ELDERS Second Edition Marie Luz Villa

  1. Android s un Sistema Operatiu mbil basat en

    E-Print Network [OSTI]

    Rovira, Carles

    Android Android és un Sistema Operatiu mòbil basat en Linux que permet desenvolupar software d de Software. Té més de 1000 descàrregues a l'Android Market #12;"Las ideas proceden de la curiosidad'aplicació. Una aplicació Android es programa amb el llenguatge Java. #12;

  2. Palomar tem que el minvament de finanament pblic i la necessitat d'obtenir ingressos propis desemboque en 'universitat concertada'

    E-Print Network [OSTI]

    Escolano, Francisco

    Palomar tem que el minvament de finançament públic i la necessitat d'obtenir ingressos propis de la Universitat d'Alacant, Manuel Palomar, ha clausurat el curs acadèmic 2013-14 en un solemne acte acadèmic amb el qual es reconeix la capacitat investigadora", Palomar ha reivindicat, una vegada més, "un

  3. IEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 2, NO. 3, SEPTEMBER 1997 161 Time Delay Control With State Feedback

    E-Print Network [OSTI]

    of measurement noise. Index Terms--Cone-shaped active magnetic bearing, position control, state feedback, time delay control. I. INTRODUCTION THE active magnetic bearing (AMB) has been widely adopted nowadays-precision active magnetic bearings. In their work, experimental results indicated that the TDC has impressive

  4. Optimal Control of a Magnetic Bearing without Bias Flux Using Finite Voltage Charles Yang *, Research Assistant

    E-Print Network [OSTI]

    Knospe, Carl

    Optimal Control of a Magnetic Bearing without Bias Flux Using Finite Voltage Charles Yang, Sterling Heights, MI 48314 SUMMARY Conventional Active Magnetic Bearings (AMB) are operated using a bias. In this paper, optimal control of a magnetic bearing without bias is investigated. A single degree

  5. Ampliacio de Models Matem`atics de la Fisica Llicenciatura de Matem`atiques / M`aster de Matem`atica Aplicada

    E-Print Network [OSTI]

    Gràcia, Xavier

    Complements Matem`atics 3 1 Connexions. Varietats riemannianes 3 2 Fibrats vectorials. Estructures geom Mec`anica 14 1 Mec`anica newtoniana 14 2 Mec`anica en una varietat riemanniana 16 3 Formalisme tot camp vectorial X, es t´e XT = 0. 4. La diferencial covariant. Sigui M una varietat amb connexi

  6. Documentation and analysis for packaging for surface moisture measurement system 7A containers

    SciTech Connect (OSTI)

    Clem, D.K.

    1996-06-17

    This documentation and analysis for packaging documents that two, procured, carbon steel 5-gal drums meet all applicable U.S.Department of Transportation-7A requirements. One container will be used to transport a 0.009 Ci 252 Cf source and the other to transport a 1.7 Ci Am-Be source to and from various 200 Area tank farms.

  7. EL COMPORTAMENT DE LA MESURA DE GIBBS

    E-Print Network [OSTI]

    Márquez-Carreras, David

    = ±1 spin L'energia del sistema es representada per un Hamiltoni`a HN,(): - aleatori (pel desordre que mesura de Gibbs mesura les fluctuacions t`ermiques d'un sistema de N spins amb ni- vells d'energia HN: - Gardner Nuclear Physics 1985. - Talagrand Probabability Theory and Related Fields 2000. - Bovier

  8. Introduction to Andy Ruina and Rudra Pratap

    E-Print Network [OSTI]

    Ruina, Andy L.

    the net force on system is zero. (Ic) II) Angular Momentum Balance (AMB)/Moment Balance Equation of motion) for finite time t2 t1 Qdt + t2 t1 Pdt = E The net energy flow going in is equal to the net change in energy Kinetic energy A scalar measure of net system motion. Eint = (heat-like terms) Internal energy The non

  9. Bases dels Premis del Consell Social de la UPF a la Qualitat en la Docncia. Convocatria 2015

    E-Print Network [OSTI]

    'aplicació de les tecnologies de la informació i la comunicació o el coneixement i l'ús d'altres llengües; la qualitat i l'eficiència de les tècniques emprades, la introducció de noves tecnologies amb criteris de; Interdisciplinaris; Tecnologies de la informació i les comunicacions; Traducció i ciències del llenguatge. #12

  10. ICHNOFOSSILS OF THE PALEOGENE WILLWOOD FORMATION AND THE PALEOCENE-EOCENE THERMAL MAXIMUM (PETM): RESPONSE OF AN ANCIENT SOIL ECOSYSTEM TO TRANSIENT GLOBAL WARMING

    E-Print Network [OSTI]

    Smith, Jon Jay

    2007-12-17

    of the IchnoBioGeoScience (IBGS) Research Group—Aisha Al-Suwaidi, Kenny Bader, John Counts, Debra Jennings, David LaBoue, Kim Montague, and Emily Tremain—have been great friends and colleagues over the years. I especially thank Brian Platt, Julie Retrum... thin, tightly spaced menisci subparallel to the bounding packet. Menisci are non-pelleted and texturally homogeneous with each other and the surrounding matrix. AMB were constructed most likely by burrower bugs (Hemiptera: Cydnidae), cicada nymphs...

  11. Tesis llegides 2009-10; 2010-11 i 2011-12 Productivitat i Inserci Laboral

    E-Print Network [OSTI]

    ENQUESTA DOCTORANDS Tesis llegides 2009-10; 2010-11 i 2011-12 Productivitat i Inserció Laboral'ha realitzat als estudiants que van llegir la tesi doctoral els cursos 2009-10; 2010-11 i 2011-12. L'objectiu principal de l'enquesta és conèixer la productivitat relacionada amb les tesis doctorals així com algunes

  12. j szocializmus fel: Bevezet W. Paul Cockshott Allin Cottrell

    E-Print Network [OSTI]

    Cockshott, W. Paul

    , hogy a szociáldemokrácia túlságosan sokat ad fel a szocializmus történelmi ambícióiból termelési módja révén különböztessük meg a többitl, akkor fel kell ismernünk, hogy a szocializmus nem egy

  13. UPC --Llicenciatura de Matem`atiques --12804 Ampliacio de Models Matem`atics de la Fisica curs 2005 tardor

    E-Print Network [OSTI]

    Gràcia, Xavier

    2005 tardor M1 Mec`anica newtoniana C1 Connexions. Varietats riemannianes 1. Connexions en una varietat'un cam´i 5. Varietats pseudo-riemannianes 6. La connexi´o de Levi-Civita M2 Mec`anica en una varietat. Sistemes de part´icules amb lligams ideals 5. Equacions de Lagrange C2 Fibrats vectorials. Estructures can

  14. Tailoring the Neutron Spectrum from a 14-MeV Neutron Generator to Approximate a Spontaneous-Fission Spectrum

    SciTech Connect (OSTI)

    James Simpson; David Chichester

    2011-06-01

    Many applications of neutrons for non-invasive measurements began with isotopic sources such as AmBe or Cf-252. Political factors have rendered AmBe undesirable in the United States and other countries, and the supply of Cf-252 is limited and significantly increasing in price every few years. Compact and low-power deuterium-tritium (DT) electronic neutron generators can often provide sufficient flux, but the 14-MeV neutron spectrum is much more energetic (harder) than an isotopic neutron source. A series of MCNP simulations were run to examine the extent to which the 14-MeV DT neutron spectrum could be softened through the use of high-Z and low-Z materials. Some potential concepts of operation require a portable neutron generator system, so the additional weight of extra materials is also a trade-off parameter. Using a reference distance of 30 cm from the source, the average neutron energy can be lowered to be less than that of either AmBe or Cf-252, while obtaining an increase in flux at the reference distance compared to a bare neutron generator. This paper discusses the types and amounts of materials used, the resulting neutron spectra, neutron flux levels, and associated photon production.

  15. Evaluation of Non-Nuclear Techniques for Well Logging: Technology Evaluation

    SciTech Connect (OSTI)

    Bond, Leonard J.; Denslow, Kayte M.; Griffin, Jeffrey W.; Dale, Gregory E.; Harris, Robert V.; Moran, Traci L.; Sheen, David M.; Schenkel, Thomas

    2010-11-01

    This report presents an initial review of the state-of-the-art nuclear and non-nuclear well logging methods and seeks to understand the technical and economic issues if AmBe, and potentially other isotope sources, are reduced or even eliminated in the oil-field services industry. Prior to considering alternative logging technologies, there is a definite need to open up discussions with industry regarding the feasibility and acceptability of source replacement. Industry views appear to range from those who see AmBe as vital and irreplaceable to those who believe that, with research and investment, it may be possible to transition to electronic neutron sources and employ combinations of non-nuclear technologies to acquire the desired petro-physical parameters. In one sense, the simple answer to the question as to whether petro-physical parameters can be sensed with technologies other than AmBe is probably "Yes". The challenges come when attention turns to record interpretation. The many decades of existing records form a very valuable proprietary resource, and the interpretation of subtle features contained in these records are of significant value to the oil-gas exploration community to correctly characterize a well. The demonstration of equivalence and correspondence/correlation between established and any new sensing modality, and correlations with historic records is critical to ensuring accurate data interpretation. Establishing the technical basis for such a demonstration represents a significant effort.

  16. Commercial Feeding Stuffs, from September 1, 1943, to August 31, 1944. 

    E-Print Network [OSTI]

    Fuller, F. D. (Frederick Driggs); Holleman, M. P.; Brock, F. D.

    1944-01-01

    STATION A. n. CONNER, DIRECTOR, College Station, Texas BULLETIN I jX9. I &dhy;\\ SEPTEMBER, 1944 ", 0, .'tJ -A>mb . I r:f! { c ,- ' F/bf ,y I COMMERCIAL FEEDING STUFFS From September 1, 1943, to August 31, 1944 // I 1'. 1). BROCIC, M. 1... on the inspection ~f feeding stuffs sold in Texas under the provisions of the Texas 7eed Law. During the year ended August 31, 1944, 3,690 samples #ere subjected to the regular chemical feed analysis and micro- scopical examination by the Division of Chemistry...

  17. Energy Conservation in Process Chilled Water Systems 

    E-Print Network [OSTI]

    Ambs, L. L.; DiBella, R. A.

    1993-01-01

    System," ASHRAE Transactions, Vol. 93, Pt 2, 1987, pp. 1830-1852. 3. D. Murphy, "Cooling Towers Used For Free Cooling," ASHRAE Journal, June, 1991, pp. 16-26. 4. W.L. Jackson, F.C. Chen, and B.C. Hwang, "The Simulation and Perfonnance of a...ON IN PROCESS CHILLED WATER SYSTEMS Robert A. DiBella Lawrence L. Ambs, Ph.D. Projcct Engineer Associate Professor Xenergy Inc. University of MassachuseLts Burlington, MA Amherst, MA ABSTRACT The energy consumption of the chiller and cooling tower in a...

  18. A method making fewer assumptions was recommended for estimating exposure–outcome associations in stratified case–cohort studies.

    E-Print Network [OSTI]

    Jones, Edmund; Sweeting, Michael J.; Sharp, Stephen J.; Thompson, Simon G.; EPIC-InterAct Consortium

    2015-04-29

    /plain; charset=UTF-8 ORIGINAL A A method making fewer assumptions s hen Con ary ridge chool amb 15; P on the full cohort can be expensive, for example if bio- different sampling fraction for selecting participants to be in the subcohort. For data from... Act. The subcohort selection for InterAct was34 participants, recruited from 1993 to 1999; this maller than the full EPIC-Europe cohort becauseshown to be very similar between one-stage and two- stage models [15]. The assumptions each model makes about the exposure...

  19. Discrimination of neutrons and {\\gamma}-rays in liquid scintillator based on Elman neural network

    E-Print Network [OSTI]

    Zhang, Cai-Xun; Zhao, Jian-Ling; Wang, Li; Yu, Xun-Zhen; Zhu, Jing-Jun; Xing, Hao-Yang

    2015-01-01

    A new neutron and {\\gamma} (n/{\\gamma}) discrimination method based on Elman Neural Network (ENN) was put forward to improve the n/{\\gamma} discrimination performance of liquid scintillator (LS). In this study, neutron and {\\gamma} data acquired from EJ-335 which was exposed in Am-Be radiation field was discriminated using ENN. The difference of n/{\\gamma} discrimination performance between using ENN and Back Propagation Neural Network (BPNN) is that ENN gave a improvement over BPNN in n/{\\gamma} discrimination with the increasing increasing of the Figure of Merit (FOM) from 0.907 to 0.953.

  20. POLITECNICO DI MILANO -Area A.I.A.C. Aprile 2003 Iscritti 01/02 I 02/03

    E-Print Network [OSTI]

    Territoriale, Urban. Amb. Piacenza A1 7 PIApc 0 0 0 0 0 63 7 Architettura MI - Bov A2 3 4 ARCbv 688 340 49,4% 668 97,1% 713 750 1.001 8 Architettura delle Costruzioni MI - Bov A2 3 4 COSbv 144 52 36,1% 136 94,4% 152 163 275 9 Disegno industriale MI - Bov A3 3 42 DISbv 1.286 591 46,0% 1.244 96,7% 1.317 1.352 2

  1. Evaluation of Protein Docking Predictions Using Hex 3.1

    E-Print Network [OSTI]

    Ritchie, Dave

    45 6.3 × 108 4/5 43/63 7.43 6.5 4 Amylase/AMD10 1, 2 45 5.6 × 108 -/5 0/58 - 4.7 5 Amylase/AMB7 1, 2 45 5.6 × 108 -/5 0/64 - 4.7 6 Amylase/AMD9 1, 2 45 5.6 × 108 5/5 53/65 2.16 4.7 7 SpeA/14.3.D 1 45

  2. Novel, Integrated Reactor / Power Conversion System (LMR-AMTEC)

    SciTech Connect (OSTI)

    Pablo Rubiolo, Principal Investigator

    2003-03-21

    The main features of this project were the development of a long life (up to 10 years) Liquid Metal Reactor (LMR) and a static conversion subsystem comprising an Alkali Metal Thermal-to-Electric (AMTEC) topping cycle and a ThermoElectric (TE) Bottom cycle. Various coupling options of the LMR with the energy conversion subsystem were explored and, base in the performances found in this analysis, an Indirect Coupling (IC) between the LMR and the AMTEC/TE converters with Alkali Metal Boilers (AMB) was chosen as the reference design. The performance model of the fully integrated sodium-and potassium-AMTEC/TE converters shows that a combined conversion efficiency in excess of 30% could be achieved by the plant. (B204)

  3. ASME 

    E-Print Network [OSTI]

    Unknown

    2011-08-17

    CROMER CYCLE AIR CONDITIONER: A STUDY TO CONFIRM TARGET PERFORMANCE Charles J. Cromer, Ph.D., P.E., Program Director, Florida Solar Energy Center, Cocoa, FL ABSTRACT The Cromer cycle uses a desiccant wheel operating in conjunction with a... on Standard AC System. Day Time Amb F Watt-hr Cfm InRH OutRH In F Out F 52 1410 95.227 3230.0 943.20 45.600 99.934 80.925 56.243 52 1420 95.128 3230.0 944.83 45.868 99.930 80.846 56.213 52 1430 95.238 3230.0 943.20 46.086 99.926 80.658 56...

  4. Neutron Interactions as Seen by A Segmented Germanium Detector

    E-Print Network [OSTI]

    I. Abt; A. Caldwell; K. Kroeninger; J. Liu; X. Liu; B. Majorovits

    2007-11-14

    The GERmanium Detector Array, GERDA, is designed for the search for ``neutrinoless double beta decay'' (0-nu-2-beta) with germanium detectors enriched in Ge76. An 18-fold segmented prototype detector for GERDA Phase II was exposed to an AmBe neutron source to improve the understanding of neutron induced backgrounds. Neutron interactions with the germanium isotopes themselves and in the surrounding materials were studied. Segment information is used to identify neutron induced peaks in the recorded energy spectra. The Geant4 based simulation package MaGe is used to simulate the experiment. Though many photon peaks from germanium isotopes excited by neutrons are correctly described by Geant4, some physics processes were identified as being incorrectly treated or even missing.

  5. Characterization of the neutron irradiation system for use in the Low-Dose-Rate Irradiation Facility at Sandia National Laboratories.

    SciTech Connect (OSTI)

    Franco, Manuel,

    2014-08-01

    The objective of this work was to characterize the neutron irradiation system consisting of americium-241 beryllium (241AmBe) neutron sources placed in a polyethylene shielding for use at Sandia National Laboratories (SNL) Low Dose Rate Irradiation Facility (LDRIF). With a total activity of 0.3 TBq (9 Ci), the source consisted of three recycled 241AmBe sources of different activities that had been combined into a single source. The source in its polyethylene shielding will be used in neutron irradiation testing of components. The characterization of the source-shielding system was necessary to evaluate the radiation environment for future experiments. Characterization of the source was also necessary because the documentation for the three component sources and their relative alignment within the Special Form Capsule (SFC) was inadequate. The system consisting of the source and shielding was modeled using Monte Carlo N-Particle transport code (MCNP). The model was validated by benchmarking it against measurements using multiple techniques. To characterize the radiation fields over the full spatial geometry of the irradiation system, it was necessary to use a number of instruments of varying sensitivities. First, the computed photon radiography assisted in determining orientation of the component sources. With the capsule properly oriented inside the shielding, the neutron spectra were measured using a variety of techniques. A N-probe Microspec and a neutron Bubble Dosimeter Spectrometer (BDS) set were used to characterize the neutron spectra/field in several locations. In the third technique, neutron foil activation was used to ascertain the neutron spectra. A high purity germanium (HPGe) detector was used to characterize the photon spectrum. The experimentally measured spectra and the MCNP results compared well. Once the MCNP model was validated to an adequate level of confidence, parametric analyses was performed on the model to optimize for potential experimental configurations and neutron spectra for component irradiation. The final product of this work is a MCNP model validated by measurements, an overall understanding of neutron irradiation system including photon/neutron transport and effective dose rates throughout the system, and possible experimental configurations for future irradiation of components.

  6. Student Progress Report: Summer 2012

    SciTech Connect (OSTI)

    Tucker, Lucas P

    2012-08-06

    The Los Alamos SOURCES 4C code has been benchmarked for alpha particle beam problems and common neutron source materials (e.g. those containing plutonium or beryllium), but little benchmarking has been performed for more exotic isotopic neutron sources or uranium mixtures. This work extends SOURCES 4C benchmarking effort. Experimental data was found in the literature for several isotopic neutron sources, namely Am/Be, Am/F, Am/B, Cm/Be, {sup 238}Pu/{sup 13}C, {sup 252}Cf, and Am/Li. SOURCES 4C simulations were run for each of these materials and the output was used to develop a source term for use in MCNP, which allowed other physical effects such as down scattering and multiplication to be accounted for. Neutron emission rate and energy spectra results were compared for these sources, generally yielding order-of-magnitude agreement for the neutron emission rate and qualitative agreement for the shape of the neutron energy spectra. An exception was the neutron energy spectrum calculated for {sup 238}Pu/{sup 13}C whose primary peak was calculated to be 1 MeV higher than was measured. The accuracy of SOURCES is highly dependent on an accurate material definition. This discrepancy is likely due to inhomogeneity of the source materials, which cannot be simulated by SOURCES or MCNP, and chemical impurities not reported by the experimentalist. The results of the Am/Li calculation demonstrate that even small impurities are capable of dramatically changing the results. The neutron emission rates of numerous uranium compounds were also calculated with SOURCES and benchmarked with experimentally determined values found in the literature. The calculated results were similar to the experimental results with less than 10% error for the following compounds: uranyl fluoride, uranyl nitrate, UO{sub 3}, UO{sub 2}F{sub 2}, UF{sub 4}, UF{sub 6}, and U-metal of less than 90% enrichment. This work demonstrates the robustness of SOURCES as a tool for calculating neutron emission rates and energy spectra.

  7. Highly Parallelized Pattern Matching Execution for the ATLAS Experiment

    E-Print Network [OSTI]

    Citraro, Saverio; The ATLAS collaboration

    2015-01-01

    Abstract– The Associative Memory (AM) system of the Fast Tracker (FTK) processor has been designed to perform pattern matching using as input the data from the silicon tracker in the ATLAS experiment. The AM is the primary component of the FTK system and is designed using ASIC technology (the AM chip) to execute pattern matching with a high degree of parallelism. The FTK system finds track candidates at low resolution that are seeds for a full resolution track fitting. The AM system implementation is named “Serial Link Processor” and is based on an extremely powerful network of 2 Gb/s serial links to sustain a huge traffic of data. This paper reports on the design of the Serial Link Processor consisting of two types of boards, the Little Associative Memory Board (LAMB), a mezzanine where the AM chips are mounted, and the Associative Memory Board (AMB), a 9U VME motherboard which hosts four LAMB daughterboards. We also report on the performance of the prototypes (both hardware and firmware) produced and ...

  8. Study of neutron response and n-gamma discrimination by charge comparison method for small liquid scintillation detector

    E-Print Network [OSTI]

    J. ?erný; Z. Doležal; M. P. Ivanov; E. S. Kuzmin; J. Švejda; I. Wilhelm

    2003-11-24

    The study of the neutron response and n-gamma discrimination for small (18x26x8) mm3 liquid scintillator BC501A (Bicron) detector was carried out by digital charge comparison method. Three ranges of neutron energies were used: uniform distribution from 0.95 MeV to 1.23 MeV, continuous spectra of AmBe source and monoenergetic 16.2 MeV neutrons. The obtained results are compared with those for cylindrical liquid scintillation detector (40 mm diameter, 60 mm length) at the same energies of neutrons. A dramatic fall of the neutron response function at 400 keVee for small detector at 16.2 MeV neutron energy was measured. For (0.95 - 1.23) MeV neutron energy range such fall takes place at 260 keVee. The greater slope of neutron locus at (0.95 - 1.23) MeV neutron energy comparing to 16.2 MeV for both detectors is explained by longer tail of pulse from proton recoils within (0.1-1.23) MeV energy range.

  9. Correlative Electron and Fluorescence Microscopy of Magnetotactic Bacteria in Liquid: Toward In Vivo Imaging

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

    Woehl, Taylor J.; Kashyap, Sanjay; Firlar, Emre; Perez-Gonzalez, Teresa; Faivre, Damien; Trubitsyn, Denis; Bazylinski, Dennis A.; Prozorov, Tanya

    2014-10-31

    Magnetotactic bacteria biomineralize ordered chains of uniform, membrane-bound magnetite or greigite nanocrystals that exhibit nearly perfect crystal structures and species-specific morphologies. Transmission electron microscopy (TEM) is a critical technique for providing information regarding the organization of cellular and magnetite structures in these microorganisms. However, conventional TEM can only be used to image air-dried or vitrified bacteria removed from their natural environment. Here we present a correlative scanning TEM (STEM) and fluorescence microscopy technique for imaging viable cells of Magnetospirillum magneticum strain AMB-1 in liquid using an in situ fluid cell TEM holder. Fluorescently labeled cells were immobilized on microchip windowmore »surfaces and visualized in a fluid cell with STEM, followed by correlative fluorescence imaging to verify their membrane integrity. Notably, the post-STEM fluorescence imaging indicated that the bacterial cell wall membrane did not sustain radiation damage during STEM imaging at low electron dose conditions. We investigated the effects of radiation damage and sample preparation on the bacteria viability and found that approximately 50% of the bacterial membranes remained intact after an hour in the fluid cell, decreasing to ~30% after two hours. These results represent a first step toward in vivo studies of magnetite biomineralization in magnetotactic bacteria.« less

  10. Correlative Electron and Fluorescence Microscopy of Magnetotactic Bacteria in Liquid: Toward In Vivo Imaging

    SciTech Connect (OSTI)

    Woehl, Taylor J.; Kashyap, Sanjay; Firlar, Emre; Perez-Gonzalez, Teresa; Faivre, Damien; Trubitsyn, Denis; Bazylinski, Dennis A.; Prozorov, Tanya

    2014-10-31

    Magnetotactic bacteria biomineralize ordered chains of uniform, membrane-bound magnetite or greigite nanocrystals that exhibit nearly perfect crystal structures and species-specific morphologies. Transmission electron microscopy (TEM) is a critical technique for providing information regarding the organization of cellular and magnetite structures in these microorganisms. However, conventional TEM can only be used to image air-dried or vitrified bacteria removed from their natural environment. Here we present a correlative scanning TEM (STEM) and fluorescence microscopy technique for imaging viable cells of Magnetospirillum magneticum strain AMB-1 in liquid using an in situ fluid cell TEM holder. Fluorescently labeled cells were immobilized on microchip window surfaces and visualized in a fluid cell with STEM, followed by correlative fluorescence imaging to verify their membrane integrity. Notably, the post-STEM fluorescence imaging indicated that the bacterial cell wall membrane did not sustain radiation damage during STEM imaging at low electron dose conditions. We investigated the effects of radiation damage and sample preparation on the bacteria viability and found that approximately 50% of the bacterial membranes remained intact after an hour in the fluid cell, decreasing to ~30% after two hours. These results represent a first step toward in vivo studies of magnetite biomineralization in magnetotactic bacteria.

  11. NSDann2BS, a neutron spectrum unfolding code based on neural networks technology and two bonner spheres

    SciTech Connect (OSTI)

    Ortiz-Rodriguez, J. M.; Reyes Alfaro, A.; Reyes Haro, A.; Solis Sanches, L. O.; Miranda, R. Castaneda; Cervantes Viramontes, J. M. [Universidad Autonoma de Zacatecas, Unidad Academica de Ingenieria Electrica. Av. Ramon Lopez Velarde 801. Col. Centro Zacatecas, Zac (Mexico); Vega-Carrillo, H. R. [Universidad Autonoma de Zacatecas, Unidad Academica de Ingenieria Electrica. Av. Ramon Lopez Velarde 801. Col. Centro Zacatecas, Zac., Mexico. and Unidad Academica de Estudios Nucleares. C. Cip (Mexico)

    2013-07-03

    In this work a neutron spectrum unfolding code, based on artificial intelligence technology is presented. The code called ''Neutron Spectrometry and Dosimetry with Artificial Neural Networks and two Bonner spheres'', (NSDann2BS), was designed in a graphical user interface under the LabVIEW programming environment. The main features of this code are to use an embedded artificial neural network architecture optimized with the ''Robust design of artificial neural networks methodology'' and to use two Bonner spheres as the only piece of information. In order to build the code here presented, once the net topology was optimized and properly trained, knowledge stored at synaptic weights was extracted and using a graphical framework build on the LabVIEW programming environment, the NSDann2BS code was designed. This code is friendly, intuitive and easy to use for the end user. The code is freely available upon request to authors. To demonstrate the use of the neural net embedded in the NSDann2BS code, the rate counts of {sup 252}Cf, {sup 241}AmBe and {sup 239}PuBe neutron sources measured with a Bonner spheres system.

  12. SHIELDING ANALYSIS FOR PORTABLE GAUGING COMBINATION SOURCES

    SciTech Connect (OSTI)

    J. TOMPKINS; L. LEONARD; ET AL

    2000-08-01

    Radioisotopic decay has been used as a source of photons and neutrons for industrial gauging operations since the late 1950s. Early portable moisture/density gauging equipment used Americium (Am)-241/Beryllium (Be)/Cesium (Cs)-137 combination sources to supply the required nuclear energy for gauging. Combination sources typically contained 0.040 Ci of Am-241 and 0.010 Ci of CS-137 in the same source capsule. Most of these sources were manufactured approximately 30 years ago. Collection, transportation, and storage of these sources once removed from their original device represent a shielding problem with distinct gamma and neutron components. The Off-Site Source Recovery (OSR) Project is planning to use a multi-function drum (MFD) for the collection, shipping, and storage of AmBe sources, as well as the eventual waste package for disposal. The MFD is an approved TRU waste container design for DOE TRU waste known as the 12 inch Pipe Component Overpack. As the name indicates, this drum is based on a 12 inch ID stainless steel weldment approximately 25 inch in internal length. The existing drum design allows for addition of shielding within the pipe component up to the 110 kg maximum pay load weight. The 12 inch pipe component is packaged inside a 55-gallon drum, with the balance of the interior space filled with fiberboard dunnage. This packaging geometry is similar to the design of a DOT 6M, Type B shipping container.

  13. Testing for characterization of the materials from radiological point of view

    SciTech Connect (OSTI)

    Bercea, Sorin; Iliescu, Elena; Dudu, Dorin; Iancso, Georgeta [National Institute of R and D for Physics and Nuclear Engineering-Horia Hulubei , Reactorului 30 St, P.O.BOX MG-6,Magurele, cod 077125 (Romania)

    2013-12-16

    The nuclear techniques and materials are now used in a large number of applications, both in medicine and industry. Due to this fact, new materials are needed in order to assure the radiological protection of the personnel involved in these activities. But, finally, all these materials have to be tested for some specific parameters, in order to prove that they are adequate for the purposed for which they were created. One of the important parameters of the materials used for the radiological protection is the attenuation coefficient. The attenuation coefficient of the ionizing radiation composed by particles without electrical charge (X,?-ray and neutron) is the most important parameter for the materials used for the shielding of these ionizing radiation. This paper deals with the experimental methods developed for the determination of the attenuation of fast and thermal neutrons. These experimental methods, involved the use of Am-Be source and U-120 Cyclotron of IFIN-HH. For the tests which were done at the U-120 Cyclotron, a number of experiments had to be performed, in order to establish the irradiation geometry and the dose equivalent rates in front of and behind the material samples. The experimental results obtained for samples of several materials, confirmed the methods as adequate for the aim of the test.

  14. Pulse-shape discrimination between electron and nuclear recoils in a NaI(Tl) crystal

    E-Print Network [OSTI]

    Lee, H S; Adhikari, P; Choi, S; Hahn, I S; Jeon, E J; Joo, H W; Kang, W G; Kim, G B; Kim, H J; Kim, H O; Kim, K W; Kim, N Y; Kim, S K; Kim, Y D; Kim, Y H; Lee, J H; Lee, M H; Leonard, D S; Li, J; Oh, S Y; Olsen, S L; Park, H K; Park, H S; Park, K S; Shim, J H; So, J H

    2015-01-01

    We report on the response of a high light-output NaI(Tl) crystal to nuclear recoils induced by neutrons from an Am-Be source and compare the results with the response to electron recoils produced by Compton scattered 662 keV $\\gamma$-rays from a $^{137}$Cs source. The measured pulse-shape discrimination (PSD) power of the NaI(Tl) crystal is found to be significantly improved because of the high light output of the NaI(Tl) detector. We quantify the PSD power with a quality factor and estimate the sensitivity to the interaction rate for weakly interacting massive particles (WIMPs) with nucleons, and the result is compared with the annual modulation amplitude observed by the DAMA/LIBRA experiment. The sensitivity to spin-independent WIMP-nucleon interactions based on 100 kg$\\cdot$year of data from NaI detectors is estimated with simulated experiments, using the standard halo model.

  15. Pulse-shape discrimination between electron and nuclear recoils in a NaI(Tl) crystal

    E-Print Network [OSTI]

    H. S. Lee; G. Adhikari; P. Adhikari; S. Choi; I. S. Hahn; E. J. Jeon; H. W. Joo; W. G. Kang; G. B. Kim; H. J. Kim; H. O. Kim; K. W. Kim; N. Y. Kim; S. K. Kim; Y. D. Kim; Y. H. Kim; J. H. Lee; M. H. Lee; D. S. Leonard; J. Li; S. Y. Oh; S. L. Olsen; H. K. Park; H. S. Park; K. S. Park; J. H. Shim; J. H. So

    2015-08-26

    We report on the response of a high light-output NaI(Tl) crystal to nuclear recoils induced by neutrons from an Am-Be source and compare the results with the response to electron recoils produced by Compton scattered 662 keV $\\gamma$-rays from a $^{137}$Cs source. The measured pulse-shape discrimination (PSD) power of the NaI(Tl) crystal is found to be significantly improved because of the high light output of the NaI(Tl) detector. We quantify the PSD power with a quality factor and estimate the sensitivity to the interaction rate for weakly interacting massive particles (WIMPs) with nucleons, and the result is compared with the annual modulation amplitude observed by the DAMA/LIBRA experiment. The sensitivity to spin-independent WIMP-nucleon interactions based on 100 kg$\\cdot$year of data from NaI detectors is estimated with simulated experiments, using the standard halo model.

  16. Investigation about decoupling capacitors of PMT voltage divider effects on neutron-gamma discrimination

    SciTech Connect (OSTI)

    Divani, Nazila Firoozabadi, Mohammad M.; Bayat, Esmail

    2014-11-24

    Scintillators are almost used in any nuclear laboratory. These detectors combine of scintillation materials, PMT and a voltage divider. Voltage dividers are different in resistive ladder design. But the effect of decoupling capacitors and damping resistors haven’t discussed yet. In this paper at first a good equilibrium circuit designed for PMT, and it was used for investigating about capacitors and resistors in much manner. Results show that decoupling capacitors have great effect on PMT output pulses. In this research, it was tried to investigate the effect of Capacitor’s value and places on PMT voltage divider in Neutron-Gamma discrimination capability. Therefore, the voltage divider circuit for R329-02 Hamamatsu PMT was made and Zero Cross method used for neutron-gamma discrimination. The neutron source was a 20Ci Am-Be. Anode and Dynode pulses and discrimination spectrum were saved. The results showed that the pulse height and discrimination quality change with the value and setting of capacitors.

  17. Environmental Assessment Radioactive Source Recovery Program

    SciTech Connect (OSTI)

    1995-12-20

    In a response to potential risks to public health and safety, the U.S. Department of Energy (DOE) is evaluating the recovery of sealed neutron sources under the Radioactive Source Recovery Program (RSRP). This proposed program would enhance the DOE`s and the U.S. Nuclear Regulatory Commission`s (NRC`s) joint capabilities in the safe management of commercially held radioactive source materials. Currently there are no federal or commercial options for the recovery, storage, or disposal of sealed neutron sources. This Environmental Assessment (EA) analyzes the potential environmental impacts that would be expected to occur if the DOE were to implement a program for the receipt and recovery at the Los Alamos National Laboratory (LANL), Los Alamos, New Mexico, of unwanted and excess plutonium-beryllium ({sup 238}Pu-Be) and americium-beryllium ({sup 241}Am-Be) sealed neutron sources. About 1 kg (2.2 lb) plutonium and 3 kg (6.6 lb) americium would be recovered over a 15-year project. Personnel at LANL would receive neutron sources from companies, universities, source brokers, and government agencies across the country. These neutron sources would be temporarily stored in floor holes at the CMR Hot Cell Facility. Recovery reduces the neutron emissions from the source material and refers to a process by which: (1) the stainless steel cladding is removed from the neutron source material, (2) the mixture of the radioactive material (Pu-238 or Am-241) and beryllium that constitutes the neutron source material is chemically separated (recovered), and (3) the recovered Pu-238 or Am-241 is converted to an oxide form ({sup 238}PuO{sub 2} or {sup 241}AmO{sub 2}). The proposed action would include placing the {sup 238}PuO{sub 2} or {sup 241}AmO{sub 2} in interim storage in a special nuclear material vault at the LANL Plutonium Facility.

  18. High Purity Americium-241 for Fuel Cycle R&D Program

    SciTech Connect (OSTI)

    Dr. Paul A. Lessing

    2011-07-01

    Previously the U.S. Department of Energy released Am-241 for various applications such as smoke detectors and Am-Be neutron sources for oil wells. At this date there is a shortage of usable, higher purity Am-241 in metal and oxide form available in the United States. Recently, the limited source of Am-241 has been from Russia with production being contracted to existing customers. The shortage has resulted in the price per gram rising dramatically over the last few years. DOE-NE currently has need for high purity Am-241 metal and oxide to fabricate fuel pellets for reactor testing in the Fuel Cycle R&D program. All the available high purity americium has been gathered from within the DOE system of laboratories. However, this is only a fraction of the projected needs of FCRD over the next 10 years. Therefore, FCR&D has proposed extraction and purification concepts to extract Am-241 from a mixed AmO2-PuO2 feedstock stored at the Savannah River Site. The most simple extraction system is based upon high temperature reduction using lanthanum metal with concurrent evaporation and condensation to produce high purity Am metal. Metallic americium has over a four order of magnitude higher vapor pressure than plutonium. Results from small-scale reduction experiments are presented. These results confirm thermodynamic predictions that at 1000 deg C metallic lanthanum reduces both PuO2 and AmO2. Faster kinetics are expected for temperatures up to about 1500 deg C.

  19. EFFECT OF INTERACTING RAREFACTION WAVES ON RELATIVISTICALLY HOT JETS

    SciTech Connect (OSTI)

    Matsumoto, Jin; Shibata, Kazunari; Masada, Youhei

    2012-06-01

    The effect of rarefaction acceleration on the propagation dynamics and structure of relativistically hot jets is studied through relativistic hydrodynamic simulations. We emphasize the nonlinear interaction of rarefaction waves excited at the interface between a cylindrical jet and the surrounding medium. From simplified one-dimensional (1D) models with radial jet structure, we find that a decrease in the relativistic pressure due to the interacting rarefaction waves in the central zone of the jet transiently yields a more powerful boost of the bulk jet than that expected from single rarefaction acceleration. This leads to a cyclic in situ energy conversion between thermal and bulk kinetic energies, which induces radial oscillating motion of the jet. The oscillation timescale is characterized by the initial pressure ratio of the jet to the ambient medium and follows a simple scaling relation, {tau}{sub oscillation}{proportional_to}(P{sub jet,0}/P{sub amb,0}){sup 1/2}. Extended two-dimensional simulations confirm that this radial oscillating motion in the 1D system manifests as modulation of the structure of the jet in a more realistic situation where a relativistically hot jet propagates through an ambient medium. We find that when the ambient medium has a power-law pressure distribution, the size of the reconfinement region along the propagation direction of the jet in the modulation structure {lambda} evolves according to a self-similar relation {lambda}{proportional_to}t{sup {alpha}/2}, where {alpha} is the power-law index of the pressure distribution.

  20. Real-Time Active Cosmic Neutron Background Reduction Methods

    SciTech Connect (OSTI)

    Mukhopadhyay, Sanjoy; Maurer, Richard; Wolff, Ronald; Mitchell, Stephen; Guss, Paul

    2013-09-01

    Neutron counting using large arrays of pressurized 3He proportional counters from an aerial system or in a maritime environment suffers from the background counts from the primary cosmic neutrons and secondary neutrons caused by cosmic ray?induced mechanisms like spallation and charge-exchange reaction. This paper reports the work performed at the Remote Sensing Laboratory–Andrews (RSL-A) and results obtained when using two different methods to reduce the cosmic neutron background in real time. Both methods used shielding materials with a high concentration (up to 30% by weight) of neutron-absorbing materials, such as natural boron, to remove the low-energy neutron flux from the cosmic background as the first step of the background reduction process. Our first method was to design, prototype, and test an up-looking plastic scintillator (BC-400, manufactured by Saint Gobain Corporation) to tag the cosmic neutrons and then create a logic pulse of a fixed time duration (~120 ?s) to block the data taken by the neutron counter (pressurized 3He tubes running in a proportional counter mode). The second method examined the time correlation between the arrival of two successive neutron signals to the counting array and calculated the excess of variance (Feynman variance Y2F)1 in the neutron count distribution from Poisson distribution. The dilution of this variance from cosmic background values ideally would signal the presence of man-made neutrons.2 The first method has been technically successful in tagging the neutrons in the cosmic-ray flux and preventing them from being counted in the 3He tube array by electronic veto—field measurement work shows the efficiency of the electronic veto counter to be about 87%. The second method has successfully derived an empirical relationship between the percentile non-cosmic component in a neutron flux and the Y2F of the measured neutron count distribution. By using shielding materials alone, approximately 55% of the neutron flux from man-made sources like 252Cf or Am-Be was removed.

  1. Assessment of display performance for medical imaging systems: Executive summary of AAPM TG18 report

    SciTech Connect (OSTI)

    Samei, Ehsan; Badano, Aldo; Chakraborty, Dev [Duke Advanced Imaging Laboratories, Departments of Radiology, Physics, and Biomedical Engineering, Duke University, DUMC 3302, Durham, North Carolina 27710 (United States) and FDA, CDRH (United States)] [and others

    2005-04-01

    Digital imaging provides an effective means to electronically acquire, archive, distribute, and view medical images. Medical imaging display stations are an integral part of these operations. Therefore, it is vitally important to assure that electronic display devices do not compromise image quality and ultimately patient care. The AAPM Task Group 18 (TG18) recently published guidelines and acceptance criteria for acceptance testing and quality control of medical display devices. This paper is an executive summary of the TG18 report. TG18 guidelines include visual, quantitative, and advanced testing methodologies for primary and secondary class display devices. The characteristics, tested in conjunction with specially designed test patterns (i.e., TG18 patterns), include reflection, geometric distortion, luminance, the spatial and angular dependencies of luminance, resolution, noise, glare, chromaticity, and display artifacts. Geometric distortions are evaluated by linear measurements of the TG18-QC test pattern, which should render distortion coefficients less than 2%/5% for primary/secondary displays, respectively. Reflection measurements include specular and diffuse reflection coefficients from which the maximum allowable ambient lighting is determined such that contrast degradation due to display reflection remains below a 20% limit and the level of ambient luminance (L{sub amb}) does not unduly compromise luminance ratio (LR) and contrast at low luminance levels. Luminance evaluation relies on visual assessment of low contrast features in the TG18-CT and TG18-MP test patterns, or quantitative measurements at 18 distinct luminance levels of the TG18-LN test patterns. The major acceptable criteria for primary/secondary displays are maximum luminance of greater than 170/100 cd/m{sup 2}, LR of greater than 250/100, and contrast conformance to that of the grayscale standard display function (GSDF) of better than 10%/20%, respectively. The angular response is tested to ascertain the viewing cone within which contrast conformance to the GSDF is better than 30%/60% and LR is greater than 175/70 for primary/secondary displays, or alternatively, within which the on-axis contrast thresholds of the TG18-CT test pattern remain discernible. The evaluation of luminance spatial uniformity at two distinct luminance levels across the display faceplate using TG18-UNL test patterns should yield nonuniformity coefficients smaller than 30%. The resolution evaluation includes the visual scoring of the CX test target in the TG18-QC or TG18-CX test patterns, which should yield scores greater than 4/6 for primary/secondary displays. Noise evaluation includes visual evaluation of the contrast threshold in the TG18-AFC test pattern, which should yield a minimum of 3/2 targets visible for primary/secondary displays. The guidelines also include methodologies for more quantitative resolution and noise measurements based on MTF and NPS analyses. The display glare test, based on the visibility of the low-contrast targets of the TG18-GV test pattern or the measurement of the glare ratio (GR), is expected to yield scores greater than 3/1 and GRs greater than 400/150 for primary/secondary displays. Chromaticity, measured across a display faceplate or between two display devices, is expected to render a u{sup '},v{sup '} color separation of less than 0.01 for primary displays. The report offers further descriptions of prior standardization efforts, current display technologies, testing prerequisites, streamlined procedures and timelines, and TG18 test patterns.

  2. Bioinspired synthesis of magnetic nanoparticles

    SciTech Connect (OSTI)

    David, Anand

    2009-05-26

    The synthesis of magnetic nanoparticles has long been an area of active research. Magnetic nanoparticles can be used in a wide variety of applications such as magnetic inks, magnetic memory devices, drug delivery, magnetic resonance imaging (MRI) contrast agents, and pathogen detection in foods. In applications such as MRI, particle uniformity is particularly crucial, as is the magnetic response of the particles. Uniform magnetic particles with good magnetic properties are therefore required. One particularly effective technique for synthesizing nanoparticles involves biomineralization, which is a naturally occurring process that can produce highly complex nanostructures. Also, the technique involves mild conditions (ambient temperature and close to neutral pH) that make this approach suitable for a wide variety of materials. The term 'bioinspired' is important because biomineralization research is inspired by the naturally occurring process, which occurs in certain microorganisms called 'magnetotactic bacteria'. Magnetotactic bacteria use biomineralization proteins to produce magnetite crystals having very good uniformity in size and morphology. The bacteria use these magnetic particles to navigate according to external magnetic fields. Because these bacteria synthesize high quality crystals, research has focused on imitating aspects of this biomineralization in vitro. In particular, a biomineralization iron-binding protein found in a certain species of magnetotactic bacteria, magnetospirillum magneticum, AMB-1, has been extracted and used for in vitro magnetite synthesis; Pluronic F127 gel was used to increase the viscosity of the reaction medium to better mimic the conditions in the bacteria. It was shown that the biomineralization protein mms6 was able to facilitate uniform magnetite synthesis. In addition, a similar biomineralization process using mms6 and a shorter version of this protein, C25, has been used to synthesize cobalt ferrite particles. The overall goal of this project is to understand the mechanism of magnetite particle synthesis in the presence of the biomineralization proteins, mms6 and C25. Previous work has hypothesized that the mms6 protein helps to template magnetite and cobalt ferrite particle synthesis and that the C25 protein templates cobalt ferrite formation. However, the effect of parameters such as the protein concentration on the particle formation is still unknown. It is expected that the protein concentration significantly affects the nucleation and growth of magnetite. Since the protein provides iron-binding sites, it is expected that magnetite crystals would nucleate at those sites. In addition, in the previous work, the reaction medium after completion of the reaction was in the solution phase, and magnetic particles had a tendency to fall to the bottom of the medium and aggregate. The research presented in this thesis involves solid Pluronic gel phase reactions, which can be studied readily using small-angle x-ray scattering, which is not possible for the solution phase experiments. In addition, the concentration effect of both of the proteins on magnetite crystal formation was studied.

  3. Cle Elum and Supplementation Research Facility : Monthly Progress Report October 2008.

    SciTech Connect (OSTI)

    Cle Elum Supplementation and Research Facility

    2008-12-11

    FISH PRODUCTION: On October 7th the 2008 spawning season was completed. 823 adults were transferred to the facility for the 2008 season. The overall adult mortality was 6.9% (1.3% pre-spawning mortality and 5.6% encountered after sorting). Wild/natural salmon collected included 278 females, 173 males, and 29 jacks for a total 480 fish for the 2008 brood. Supplemented brood stock collected included 149 adults (85 females, 35 males and 29 jacks). Hatchery control brood collected for research included 194 adults (91 females, 68 males and 35 jacks). Eggs will be inventoried in November with an actual summary of eggs numbers to be submitted for the November report. The estimated egg takes (production) for the 2008 season was 1,375,146 eggs with 1,006,063 comprising of W x W crosses and 250,755 eggs of H x H crosses with 118,328 supplement crosses. Total fish on hand for the 2007 brood is 768,751 with an average fish per pound of 30.6 f/lb. FISH CULTURE: The marking and pit-tagging operation started on October 13th. The pit-tagging portion was completed on October 23rd. A total 40,000 juveniles were pit-tagged (2,000 from each of the production ponds and 4,000 each for the hatchery juvenile ponds 9 & 10). Cle Elum staff began shocking, sorting, counting and splitting eggs in incubation. Shocking eggs will separate live eggs from dead eggs. Eggs are treated with formalin three times a week to control fungus. The focus for the culturists during the month of October entail completing the final spawn (egg take) on the 7th, pond cleaning, keeping the marking trailers supplied with fish and end of month sampling. The adult holding ponds were power washed and winterized for the shut down period. Facility crew members Greg Strom and Mike Whitefoot assisted Joe Blodgett and his crew with fish brood collection on the 22nd of October. Fall Chinook and Coho salmon were seined up and put in tanker trucks from Chandler canal and transported to holding ponds for later spawning. Charlie, Simon and Vernon assisted with sorting and spawning Summer Chinook at the Wells hatchery for the Summer Chinook reintroduction program on the lower Yakima River. WATER PRODUCTION: The current combined well and river water supply to the complex is 12,909 gallons/min. Four river pumps (12,400gpm) and one well pump No.2 (509gpm) are supplying water to the facility main head box and the egg incubation building. ACCLIMATION SITES: Easton had much activity in October, the electrical power panel that's switches commercial power operation to generator power (transfer switch) malfunctioned. Charlie called Wallace Electric as well as ASCO Services to trouble shoot the problem which has yet to be determined. Heaters have been turned on in all service buildings at the acclimation sites. Pacific States Marine Fisheries Commission traveled to Easton to install a pole to mount a satellite and a new ups backup system with new monitors and computers for pit tag data recording and transmitting. Brown and Jackson pumped out the septic tanks at Easton and Clark Flat. AMB Tools performed maintenance on the compressors at the acclimation sites as well as Cle Elum (5 total). VEHICLE MAINTENANCE: Day Wireless performed maintenance on all handheld and vehicle radios. Day Wireless repaired radio communications (static noise) on the 6th also. All vehicles mileages and conditions are reported monthly to Toppenish. Cle Elum staff continues to clean and maintain all facility vehicles weekly. MAINTENANCE BUILDING MAINTENANCE: Kevin of Raincountry was called in response to repairs needed to the water chiller system. Cle Elum staff winterized all irrigation as well as shop grounds. Brown and Jackson pumped out the septic tank at the hatchery on the 22nd. HATCHERY BUILDING MAINTENANCE: The incubation room has been set up for transfer of eggs from isolation buckets to vertical stacks, temperature units are recorded daily. RESENTDENTIAL HOUSING: Residents irrigation has been winterized and fall fertilizer was applied to all grass on facility. Four Seasons performed maintenance on all heating sy

  4. Cle Elum Supplementation and Research Facility : Monthly Progress Report November 2008.

    SciTech Connect (OSTI)

    Cle Elum Supplementation and Research Facility

    2008-12-09

    FISH PRODUCTION: Final shocking of eggs was finished in the incubation. Egg enumeration for the 2008 brood was completed and the eggs are being incubated in 38 degree Fahrenheit chilled water. Don Larsen of NOAA made a request of eggs for research purposes and was able to acquire supplemental line eggs 10,555. Estimated density at the time of ponding in Mid-March of 2009 is approximately 43,869 fry per raceway after calculating an average fry loss of 2%. The end of the month totals for the 2007 brood reports 773,807 juveniles on hand with an overall average of 31.4 fish per pound. Tagging continues on the 2007 brood and is on pace to wrap up in early December. FISH CULTURE: Ponds are cleaned as needed and due to the colder water temperatures, the feeding frequency has been changed to three days a week. All ponds are sampled at the end of the month. Growth for production fish are adjusted accordingly as temperature dictates feeding levels. Torrential rain on the 12th turned the Yakima River extremely turbid. Fish tagging operations were halted and the ensuing conditions at the facility intake screens became a concern. Water flow to the wet well became restricted so the decision was made to shut the surface water (river) pumps down and turn on well pumps No.1, No.4 and No.6 to run water to the facility head box. This operation continued for twenty-four hours at which point normal operations were optimal and fish tagging resumed, although the river didn't clear up enough to feed the fish until the 17th. WATER PRODUCTION: The current combined well and river water supply to the complex is 14,822 gallons/minute. Well No.2 is pumping water at a rate of 530 gallons per minute. All four river pumps are in operation and pumping 14,292 gallons/minute. ACCLIMATION SITES: Cle Elum staff has been working to prep the acclimation sites for the upcoming fish transfer before the snow falls. Thermographs at each site are changed weekly. AMB Tools performed routine maintenance on the compressor and Brown and Jackson pumped out the septic tank at the Jack Creek acclimation site. VEHICLE MAINTENANCE: Snow tires are now on all vehicles and snow blowers were installed on the John Deere tractor and lawn tractor. The snowplow was also installed on the Ford one ton. The four Snowmobiles were serviced by Yamaha Jacks of Ellensburg. MAINTENANCE BUILDING MAINTENANCE: Clean up occurs on Fridays of each week. HATCHERY BUILDING MAINTENANCE: Water has been turned on to vertical incubator islands one and two. After eggs were transferred to vertical stacks cleaning of troughs began. WDFW crew inventoried eggs from isolettes and then transferred them to the vertical incubators. RIVER PUMP STATION MAINTENANCE: All four pumps are in operation and supplying the facility with 14,292 gallons/minute of water to rearing ponds. WELL FIELD MAINTENANCE: Well pumps No.1, No.4 and No.6 were turned on to supplement water flow to the facility as mentioned previously. Well No.5 was powered up but a winterizing valve malfunction wouldn't allow operation, we are currently working on it at this time. Well No.2 is pumping 530 gallons per minute and supplies well water to incubation and chiller. The pumps meter is recorded weekly. Test holes are monitored weekly and results are faxed to CH2MHILL afterward. SAFETY AND TRAINING: Ice melt and sand bags are popular items at the facility this month as freezing temperatures cause ground to become slippery and hazardous. GROUNDS: Van Alden's Plumbing installed a new commode in resident house No.411 and also inspected a plumbing problem at resident No.1131. Cle Elum staff along with WDFW staff worked to locate the spawning channel building back to the position it was at to have Greg Wallace of Wallace Electric hook electricity back up to the spawning shed. MEETINGS AND TOURS: Charlie attended a policy meeting at Cle Elum on the 18th. The Internal projects annual review took place at Cle Elum on the 19th and 20th. Bill Bosch continues to visit monthly to incorporate data into the YKFP data base. PERSONNEL: IHS employees traveled to Cle