Sample records for refiner con cerned

  1. Zoning administrators and others con-cerned with airport land use will soon

    E-Print Network [OSTI]

    Minnesota, University of

    Zoning administrators and others con- cerned with airport land use will soon have help when of the current regulatory rules and climate. The manual describes proce- dural requirements and guidelines, along

  2. Rietveld Refinement

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

    Obtain from refinement of calibrant (eg. LaB 6 ) Gives the initial values for the profile function (instrumental only parameters) Add screenshot for previous slide on...

  3. Radiation protection at CERN

    E-Print Network [OSTI]

    Forkel-Wirth, Doris; Silari, Marco; Streit-Bianchi, Marilena; Theis, Christian; Vincke, Heinz; Vincke, Helmut

    2013-01-01T23:59:59.000Z

    This paper gives a brief overview of the general principles of radiation protection legislation; explains radiological quantities and units, including some basic facts about radioactivity and the biological effects of radiation; and gives an overview of the classification of radiological areas at CERN, radiation fields at high-energy accelerators, and the radiation monitoring system used at CERN. A short section addresses the ALARA approach used at CERN.

  4. Integrity at CERN

    E-Print Network [OSTI]

    Department, HR

    2015-01-01T23:59:59.000Z

    In the fulfillment of its mission, CERN relies upon the trust and material support of its Member States and partners, and is committed to exercising exemplary stewardship of the resources with which it is entrusted. Accordingly, CERN expects the highest level of integrity from all its contributors (whether members of the personnel, consultants, contractors working on site, or persons engaged in any other capacity at or on behalf of CERN). Integrity is a core value of CERN, defined in the Code of Conduct as “behaving ethically, with intellectual honesty and being accountable for one’s own actions”.

  5. CREATIVE COLLISIONS: ARTS @CERN

    E-Print Network [OSTI]

    CERN. Geneva

    2012-01-01T23:59:59.000Z

    In 2000, CERN hosted Signatures of the Invisible – one of the landmark initiatives in arts and science. In 2012, CERN is now initiating its own science/arts programme Collide@CERN in different arts disciplines. The first of these is in digital arts, and the international competition to find the winning artist is called the Prix Ars Electronica Collide@CERN. It was announced September 2011 at CERN’s first collaboration with an international arts festival – Ars Electronica in Linz. The competition attracted over 395 entries from 40 countries around the world. The winning artist, Julius Von Bismarck, will begin his two month residency here at CERN next month. Ariane Koek who leads on this initiative, discusses the residency programme, as well as the background about Art@CERN. History has shown that particle physics and the arts are great inspiration partners. The publication of the paper by Max Planck which gave birth to quantum mechanics as well as those by Einstein, heavily influenced some of the grea...

  6. ITP Petroleum Refining: Profile of the Petroleum Refining Industry...

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

    Profile of the Petroleum Refining Industry in California: California Industries of the Future Program ITP Petroleum Refining: Profile of the Petroleum Refining Industry in...

  7. ITP Petroleum Refining: Energy Bandwidth for Petroleum Refining...

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

    Bandwidth for Petroleum Refining Processes ITP Petroleum Refining: Energy Bandwidth for Petroleum Refining Processes bandwidth.pdf More Documents & Publications ITP Petroleum...

  8. Signature CERN-URSS

    ScienceCinema (OSTI)

    None

    2011-04-25T23:59:59.000Z

    Le DG W.Jentschke souhaite la bienvenue à l'assemblée et aux invités pour la signature du protocole entre le Cern et l'URSS qui est un événement important. C'est en 1955 que 55 visiteurs soviétiques ont visité le Cern pour la première fois. Le premier DG au Cern, F.Bloch, et Mons.Amaldi sont aussi présents. Tandis que le discours anglais de W.Jentschke est traduit en russe, le discours russe de Mons.Morozov est traduit en anglais.

  9. The significance of Cern

    ScienceCinema (OSTI)

    None

    2011-04-25T23:59:59.000Z

    Le Prof. V.Weisskopf, DG du Cern de 1961 à 1965, est né à Vienne, a fait ses études à Göttingen et a une carrière académique particulièrement riche. Il a travaillé à Berlin, Copenhague et Berlin et est parti aux Etats Unis pour participer au projet Manhattan et était Prof. au MTT jusqu'à 1960. Revenu en Europe, il a été DG du Cern et lui a donné l'impulsion que l'on sait.

  10. History of Cern

    ScienceCinema (OSTI)

    None

    2011-04-25T23:59:59.000Z

    Cérémonie à l'occasion de l'apparition du premier volume du livre sur l'histoire du Cern, avec plusieurs personnes présentes qui jouaient un rôle important dans cette organisation européenne couronnée de succès grâce à l'esprit des membres fondateurs qui est et restera essentiel

  11. Refinement Modal Logic

    E-Print Network [OSTI]

    Bozzelli, Laura; French, Tim; Hales, James; Pinchinat, Sophie

    2012-01-01T23:59:59.000Z

    In this paper we present refinement modal logic. A refinement is like a bisimulation, except that from the three relational requirements only 'atoms' and 'back' need to be satisfied. Our logic contains a new operator 'forall' in additional to the standard modalities 'Box' for each agent. The operator 'forall' acts as a quantifier over the set of all refinements of a given model. We call it the refinement operator. As a variation on a bisimulation quantifier, it can be seen as a refinement quantifier over a variable not occurring in the formula bound by the operator. The logic combines the simplicity of multi-agent modal logic with some powers of monadic second order quantification. We present a sound and complete axiomatization of multiagent refinement modal logic. We also present an extension of the logic to the modal mu-calculus, and an axiomatization for the single-agent version of this logic. Examples and applications are also discussed: to software verification and design (the set of agents can also be s...

  12. Refiners get petchems help

    SciTech Connect (OSTI)

    Wood, A.; Cornitius, T.

    1997-06-11T23:59:59.000Z

    The U.S.Refining Industry is facing hard times. Slow growth, tough environmental regulations, and fierce competition - especially in retail gasoline - have squeezed margins and prompted a series of mergers and acquisitions. The trend has affected the smallest and largest players, and a series of transactions over the past two years has created a new industry lineup. Among the larger companies, Mobil and Amoco are the latest to consider a refining merger. That follows recent plans by Ashland and Marathon to merge their refining businesses, and the decision by Shell, Texaco, and Saudi Aramco to combine some U.S. operations. Many of the leading independent refiners have increased their scale by acquiring refinery capacity. With refining still in the doldrums, more independents are taking a closer look at boosting production of petrochemicals, which offer high growth and, usually, better margins. That is being helped by the shift to refinery processes that favor the increased production of light olefins for alkylation and the removal of aromatics, providing opportunity to extract these materials for the petrochemical market. 5 figs., 3 tabs.

  13. Issues in adaptive mesh refinement

    SciTech Connect (OSTI)

    Dai, William Wenlong [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    In this paper, we present an approach for a patch-based adaptive mesh refinement (AMR) for multi-physics simulations. The approach consists of clustering, symmetry preserving, mesh continuity, flux correction, communications, and management of patches. Among the special features of this patch-based AMR are symmetry preserving, efficiency of refinement, special implementation offlux correction, and patch management in parallel computing environments. Here, higher efficiency of refinement means less unnecessarily refined cells for a given set of cells to be refined. To demonstrate the capability of the AMR framework, hydrodynamics simulations with many levels of refinement are shown in both two- and three-dimensions.

  14. 25th Birthday Cern- Amphi

    ScienceCinema (OSTI)

    None

    2011-04-25T23:59:59.000Z

    Cérémonie du 25ème anniversaire du Cern avec 2 orateurs: le Prof.Weisskopf parle de la signification et le rôle du Cern et le Prof.Casimir(?) fait un exposé sur les rélations entre la science pure et la science appliquée et la "big science" (science légère)

  15. Towards automated crystallographic structure refinement with phenix.refine

    SciTech Connect (OSTI)

    Afonine, Pavel V., E-mail: pafonine@lbl.gov; Grosse-Kunstleve, Ralf W.; Echols, Nathaniel; Headd, Jeffrey J.; Moriarty, Nigel W. [Lawrence Berkeley National Laboratory, One Cyclotron Road, MS64R0121, Berkeley, CA 94720 (United States); Mustyakimov, Marat; Terwilliger, Thomas C. [Los Alamos National Laboratory, M888, Los Alamos, NM 87545 (United States); Urzhumtsev, Alexandre [CNRS–INSERM–UdS, 1 Rue Laurent Fries, BP 10142, 67404 Illkirch (France); Université Henri Poincaré, Nancy 1, BP 239, 54506 Vandoeuvre-lès-Nancy (France); Zwart, Peter H. [Lawrence Berkeley National Laboratory, One Cyclotron Road, MS64R0121, Berkeley, CA 94720 (United States); Adams, Paul D. [Lawrence Berkeley National Laboratory, One Cyclotron Road, MS64R0121, Berkeley, CA 94720 (United States); University of California Berkeley, Berkeley, CA 94720 (United States)

    2012-04-01T23:59:59.000Z

    phenix.refine is a program within the PHENIX package that supports crystallographic structure refinement against experimental data with a wide range of upper resolution limits using a large repertoire of model parameterizations. This paper presents an overview of the major phenix.refine features, with extensive literature references for readers interested in more detailed discussions of the methods. phenix.refine is a program within the PHENIX package that supports crystallographic structure refinement against experimental data with a wide range of upper resolution limits using a large repertoire of model parameterizations. It has several automation features and is also highly flexible. Several hundred parameters enable extensive customizations for complex use cases. Multiple user-defined refinement strategies can be applied to specific parts of the model in a single refinement run. An intuitive graphical user interface is available to guide novice users and to assist advanced users in managing refinement projects. X-ray or neutron diffraction data can be used separately or jointly in refinement. phenix.refine is tightly integrated into the PHENIX suite, where it serves as a critical component in automated model building, final structure refinement, structure validation and deposition to the wwPDB. This paper presents an overview of the major phenix.refine features, with extensive literature references for readers interested in more detailed discussions of the methods.

  16. A Theory of Program Refinement 

    E-Print Network [OSTI]

    Denney, Ewen WKC

    We give a canonical program refinement calculus based on the lambda calculus and classical first-order predicate logic, and study its proof theory and semantics. The intention is to construct a metalanguage for refinement in which basic principles...

  17. Possibility for irradiated beryllium at CERN

    E-Print Network [OSTI]

    McDonald, Kirk

    Possibility for irradiated beryllium at CERN RaDIATE meeting, 22nd July 2013 M. Calviani (CERN ­ Engineering Department ­ Sources, Target and Interactions Group) #12;Irradiated beryllium at CERN 2 Two possibilities exists at CERN to obtain irradiated beryllium for testing: beam windows, and in particular

  18. CERN scientists confront data deluge

    E-Print Network [OSTI]

    Johnston, H

    1998-01-01T23:59:59.000Z

    The next generation of particle accelerator is currently being designed at CERN. An understanding of the market forces in the computer industry will play a crucial role in the success of the project.

  19. Minimally refined biomass fuel

    DOE Patents [OSTI]

    Pearson, Richard K. (Pleasanton, CA); Hirschfeld, Tomas B. (Livermore, CA)

    1984-01-01T23:59:59.000Z

    A minimally refined fluid composition, suitable as a fuel mixture and derived from biomass material, is comprised of one or more water-soluble carbohydrates such as sucrose, one or more alcohols having less than four carbons, and water. The carbohydrate provides the fuel source; water solubilizes the carbohydrates; and the alcohol aids in the combustion of the carbohydrate and reduces the vicosity of the carbohydrate/water solution. Because less energy is required to obtain the carbohydrate from the raw biomass than alcohol, an overall energy savings is realized compared to fuels employing alcohol as the primary fuel.

  20. 16.Feb.2005 MC meeting, LBNL 1 CERN infrastructureCERN infrastructure

    E-Print Network [OSTI]

    McDonald, Kirk

    16.Feb.2005 MC meeting, LBNL 1 CERN infrastructureCERN infrastructure A.FabichA.Fabich, CERN AB://cern.ch/projhttp://cern.ch/proj--hiptargethiptarget #12;16.Feb.2005 MC meeting, LBNL 2 Experimental requirementsExperimental requirements What CERN couldSupport on installationinstallation CryogenicsCryogenics solenoid powersolenoid power SafetySafety #12;16.Feb.2005 MC meeting, LBNL 3

  1. Refines Efficiency Improvement

    SciTech Connect (OSTI)

    WRI

    2002-05-15T23:59:59.000Z

    Refinery processes that convert heavy oils to lighter distillate fuels require heating for distillation, hydrogen addition or carbon rejection (coking). Efficiency is limited by the formation of insoluble carbon-rich coke deposits. Heat exchangers and other refinery units must be shut down for mechanical coke removal, resulting in a significant loss of output and revenue. When a residuum is heated above the temperature at which pyrolysis occurs (340 C, 650 F), there is typically an induction period before coke formation begins (Magaril and Aksenova 1968, Wiehe 1993). To avoid fouling, refiners often stop heating a residuum before coke formation begins, using arbitrary criteria. In many cases, this heating is stopped sooner than need be, resulting in less than maximum product yield. Western Research Institute (WRI) has developed innovative Coking Index concepts (patent pending) which can be used for process control by refiners to heat residua to the threshold, but not beyond the point at which coke formation begins when petroleum residua materials are heated at pyrolysis temperatures (Schabron et al. 2001). The development of this universal predictor solves a long standing problem in petroleum refining. These Coking Indexes have great potential value in improving the efficiency of distillation processes. The Coking Indexes were found to apply to residua in a universal manner, and the theoretical basis for the indexes has been established (Schabron et al. 2001a, 2001b, 2001c). For the first time, a few simple measurements indicates how close undesired coke formation is on the coke formation induction time line. The Coking Indexes can lead to new process controls that can improve refinery distillation efficiency by several percentage points. Petroleum residua consist of an ordered continuum of solvated polar materials usually referred to as asphaltenes dispersed in a lower polarity solvent phase held together by intermediate polarity materials usually referred to as resins. The Coking Indexes focus on the amount of these intermediate polarity species since coke formation begins when these are depleted. Currently the Coking Indexes are determined by either titration or solubility measurements which must be performed in a laboratory. In the current work, various spectral, microscopic, and thermal techniques possibly leading to on-line analysis were explored for measuring the Coking Indexes.

  2. #PRL --A Proof Refinement Calculus for Classical Reasoning

    E-Print Network [OSTI]

    Kreitz, Christoph

    #µPRL -- A Proof Refinement Calculus for Classical Reasoning in Computational Type Theory Nuria, 14482 Potsdam, Germany {brede,kreitz}@cs.uni­potsdam.de Abstract. We present a hybrid proof calculus #µPRL to con­ structive proofs and show that the restriction of #µPRL to µ­safe proof terms is sound

  3. Crystal structure refinement with SHELXL

    SciTech Connect (OSTI)

    Sheldrick, George M., E-mail: gsheldr@shelx.uni-ac.gwdg.de [Department of Structural Chemistry, Georg-August Universität Göttingen, Tammannstraße 4, Göttingen 37077 (Germany)

    2015-01-01T23:59:59.000Z

    New features added to the refinement program SHELXL since 2008 are described and explained. The improvements in the crystal structure refinement program SHELXL have been closely coupled with the development and increasing importance of the CIF (Crystallographic Information Framework) format for validating and archiving crystal structures. An important simplification is that now only one file in CIF format (for convenience, referred to simply as ‘a CIF’) containing embedded reflection data and SHELXL instructions is needed for a complete structure archive; the program SHREDCIF can be used to extract the .hkl and .ins files required for further refinement with SHELXL. Recent developments in SHELXL facilitate refinement against neutron diffraction data, the treatment of H atoms, the determination of absolute structure, the input of partial structure factors and the refinement of twinned and disordered structures. SHELXL is available free to academics for the Windows, Linux and Mac OS X operating systems, and is particularly suitable for multiple-core processors.

  4. The ELENA project at CERN

    E-Print Network [OSTI]

    Oelert, W

    2015-01-01T23:59:59.000Z

    CERN has a longstanding tradition of pursuing fundamental physics on extreme low and high energy scales. The present physics knowledge is successfully described by the Standard Model and the General Relativity. In the anti-matter regime many predictions of this established theory still remain experimentally unverified and one of the most fundamental open problems in physics concerns the question of asymmetry between particles: why is the observable and visible universe apparently composed almost entirely of matter and not of anti-matter? There is a huge interest in the very compelling scientiic case for anti-hydrogen and low energy anti-proton physics, here to name especially the Workshop on New Opportunities in the Physics Landscape at CERN which was convened in May 2009 by the CERN Directorate and culminated in the decision for the final approval of the construction of the Extra Low ENergy Antiproton (ELENA) ring by the Research Board in June 2011. ELENA is a CERN project aiming to construct a small 30 m ci...

  5. CERN News - A major contract has been signed for the supply of solar panels derived from CERN technology

    E-Print Network [OSTI]

    CERN Video Productions; Marion Viguier

    2012-01-01T23:59:59.000Z

    CERN News - A major contract has been signed for the supply of solar panels derived from CERN technology

  6. ITP Petroleum Refining: Energy and Environmental Profile of the...

    Energy Savers [EERE]

    Energy Bandwidth for Petroleum Refining Processes ITP Petroleum Refining: Technology Roadmap for the Petroleum Industry ITP Petroleum Refining: Profile of the Petroleum Refining...

  7. Ceremony 25th birthday Cern

    ScienceCinema (OSTI)

    None

    2011-04-25T23:59:59.000Z

    Célébration du 25ème anniversaire du Cern (jour par jour) avec discours de L.Van Hove et J.B.Adams, des interludes musicals offerts par Mme Mey et ses collègues (au debut 1.mouvement du quatuor avec piano no 3 de L.van Beethoven) Les directeurs généraux procéderont à la remise du souvenir aux membres de personnel ayant 25 années de service dans l'organisation. Un témoignage de reconnaissance est auss fait à l'interprète Mme Zwerner

  8. Conformal refinement of unstructured quadrilateral meshes

    SciTech Connect (OSTI)

    Garmella, Rao [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    We present a multilevel adaptive refinement technique for unstructured quadrilateral meshes in which the mesh is kept conformal at all times. This means that the refined mesh, like the original, is formed of only quadrilateral elements that intersect strictly along edges or at vertices, i.e., vertices of one quadrilateral element do not lie in an edge of another quadrilateral. Elements are refined using templates based on 1:3 refinement of edges. We demonstrate that by careful design of the refinement and coarsening strategy, we can maintain high quality elements in the refined mesh. We demonstrate the method on a number of examples with dynamically changing refinement regions.

  9. Zone refining of plutonium metal

    SciTech Connect (OSTI)

    Blau, M.S.

    1994-08-01T23:59:59.000Z

    The zone refining process was applied to Pu metal containing known amounts of impurities. Rod specimens of plutonium metal were melted into and contained in tantalum boats, each of which was passed horizontally through a three-turn, high-frequency coil in such a manner as to cause a narrow molten zone to pass through the Pu metal rod 10 times. The impurity elements Co, Cr, Fe, Ni, Np, U were found to move in the same direction as the molten zone as predicted by binary phase diagrams. The elements Al, Am, and Ga moved in the opposite direction of the molten zone as predicted by binary phase diagrams. As the impurity alloy was zone refined, {delta}-phase plutonium metal crystals were produced. The first few zone refining passes were more effective than each later pass because an oxide layer formed on the rod surface. There was no clear evidence of better impurity movement at the slower zone refining speed. Also, constant or variable coil power appeared to have no effect on impurity movement during a single run (10 passes). This experiment was the first step to developing a zone refining process for plutonium metal.

  10. Advanced engineering design as practiced today from the view point of the CERN Industrial Liaison Officer

    E-Print Network [OSTI]

    Barone, Michele

    2012-01-01T23:59:59.000Z

    After an introduction about CERN, a brief description of the Large Hadron Collider(LHC) it is reviewed. Pros and cons of a few advanced engineering design cases are taken in consideration together with the involvement of the European Industry. The conclusion is that the LHC project has been an important driving force for Innovation in European Industry.

  11. 25th Birthday Cern- Restaurant

    ScienceCinema (OSTI)

    None

    2011-04-25T23:59:59.000Z

    Cérémonie du 25ème anniversaire du Cern avec plusieurs orateurs et la présence de nombreux autorités cantonales et communales genevoises et personnalités, directeurs généraux, ministres, chercheurs.... Le conseiller féderal et chef du département des affaires étrangères de la confédération Monsieur Pierre Aubert prend la parole pour célébrer à la fois les résultats très remarquables de la coopération internationale en matière scientifique, mais aussi la volonté politique des états européens de mettre en commun leurs ressources pour faire oeuvre d'avenir. Un grand hommage est aussi donné aux deux directeurs disparus, les prof.Bakker et Gregory.

  12. Big Bang Day: The Making of CERN (Episode 2)

    ScienceCinema (OSTI)

    None

    2011-04-25T23:59:59.000Z

    A two-part history of the CERN project. Quentin Cooper explores the fifty-year history of CERN, the European particle physics laboratory in Switzerland.

  13. ITP Petroleum Refining: Impacts of Condition Assessment on Energy...

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

    ITP Petroleum Refining: Impacts of Condition Assessment on Energy Use: Selected Applications in Chemicals Processing and Petroleum Refining ITP Petroleum Refining: Impacts of...

  14. The COMPASS Experiment at CERN

    E-Print Network [OSTI]

    COMPASS Collaboration; P. Abbon

    2007-03-30T23:59:59.000Z

    The COMPASS experiment makes use of the CERN SPS high-intensitymuon and hadron beams for the investigation of the nucleon spin structure and the spectroscopy of hadrons. One or more outgoing particles are detected in coincidence with the incoming muon or hadron. A large polarized target inside a superconducting solenoid is used for the measurements with the muon beam. Outgoing particles are detected by a two-stage, large angle and large momentum range spectrometer. The setup is built using several types of tracking detectors, according to the expected incident rate, required space resolution and the solid angle to be covered. Particle identification is achieved using a RICH counter and both hadron and electromagnetic calorimeters. The setup has been successfully operated from 2002 onwards using a muon beam. Data with a hadron beam were also collected in 2004. This article describes the main features and performances of the spectrometer in 2004; a short summary of the 2006 upgrade is also given.

  15. The COMPASS Experiment at CERN

    E-Print Network [OSTI]

    Abbon, P.; Alexakhin, V.Yu.; Alexandrov, Yu.; Alexeev, G.D.; Alekseev, M.G.; Amoroso, A.; Angerer, H.; Anosov, V.A.; Badelek, B.; Balestra, F.; Ball, J.; Barth, J.; Baum, G.; Becker, M.; Bedfer, Y.; Berglund, P.; Bernet, C.; Bertini, R.; Bettinelli, M.; Birsa, R.; Bisplinghoff, J.; Bordalo, P.; Bosteels, M.; Bradamante, F.; Braem, A.; Bravar, A.; Bressan, A.; Brona, G.; Burtin, E.; Bussa, M.P.; Bytchkov, V.N.; Chalifour, M.; Chapiro, A.; Chiosso, M.; Ciliberti, P.; Cicuttin, A.; Colantoni, M.; Colavita, A.A.; Costa, S.; Crespo, M.L.; Cristaudo, P.; Dafni, T.; d'Hose, N.; Dalla Torre, S.; d'Ambrosio, C.; Das, S.; Dasgupta, S.S.; Delagnes, E.; De Masi, R.; Deck, P.; Dedek, N.; Demchenko, D.; Denisov, O.Yu.; Dhara, L.; Diaz, V.; Dibiase, N.; Dinkelbach, A.M.; Dolgopolov, A.V.; Donati, A.; Donskov, S.V.; Dorofeev, V.A.; Doshita, N.; Durand, D.; Duic, V.; Dunnweber, W.; Efremov, A.; Eversheim, P.D.; Eyrich, W.; Faessler, M.; Falaleev, V.; Fauland, P.; Ferrero, A.; Ferrero, L.; Finger, M.; Finger, M.; Fischer, H.; Franco, C.; Franz, J.; Fratnik, F.; Friedrich, J.M.; Frolov, V.; Fuchs, U.; Garfagnini, R.; Gatignon, L.; Gautheron, F.; Gavrichtchouk, O.P.; Gerassimov, S.; Geyer, R.; Gheller, J.M.; Giganon, A.; Giorgi, M.; Gobbo, B.; Goertz, S.; Gorin, A.M.; Gougnaud, F.; Grabmuller, S.; Grajek, O.A.; Grasso, A.; Grube, B.; Grunemaier, A.; Guskov, A.; Haas, F.; Hagemann, R.; Hannappel, J.; von Harrach, D.; Hasegawa, T.; Heckmann, J.; Hedicke, S.; Heinsius, F.H.; Hermann, R.; Hess, C.; Hinterberger, F.; von Hodenberg, M.; Horikawa, N.; Horikawa, S.; Horn, I.; Ilgner, C.; Ioukaev, A.I.; Ishimoto, S.; Ivanchin, I.; Ivanov, O.; Iwata, T.; Jahn, R.; Janata, A.; Joosten, R.; Jouravlev, N.I.; Kabuss, E.; Kalinnikov, V.; Kang, D.; Karstens, F.; Kastaun, W.; Ketzer, B.; Khaustov, G.V.; Khokhlov, Yu.A.; Kiefer, J.; Kisselev, Yu.; Klein, F.; Klimaszewski, K.; Koblitz, S.; Koivuniemi, J.H.; Kolosov, V.N.; Komissarov, E.V.; Kondo, K.; Konigsmann, Kay; Konoplyannikov, A.K.; Konorov, I.; Konstantinov, V.F.; Korentchenko, A.S.; Korzenev, A.; Kotzinian, A.M.; Koutchinski, N.A.; Kouznetsov, O.; Kowalik, K.; Kramer, D.; Kravchuk, N.P.; Krivokhizhin, G.V.; Kroumchtein, Z.V.; Kubart, J.; Kuhn, R.; Kukhtin, V.; Kunne, F.; Kurek, K.; Kuzmin, N.A.; Lamanna, M.; Le Goff, J.M.; Leberig, M.; Lednev, A.A.; Lehmann, A.; Levinski, V.; Levorato, S.; Lyashenko, V.I; Lichtenstadt, J.; Liska, T.; Ludwig, I.; Maggiora, A.; Maggiora, M.; Magnon, A.; Mallot, G.K.; Mann, A.; Manuilov, I.V.; Marchand, C.; Marroncle, J.; Martin, A.; Marzec, J.; Masek, L.; Massmann, F.; Matsuda, T.; Matthia, D.; Maximov, A.N.; Menon, G.; Meyer, W.; Mielech, A.; Mikhailov, Yu.V.; Moinester, M.A.; Molinie, F.; Mota, F.; Mutter, A.; Nagel, T.; Nahle, O.; Nassalski, J.; Neliba, S.; Nerling, F.; Neyret, D.; Niebuhr, M.; Niinikoski, T.; Nikolaenko, V.I.; Nozdrin, A.A.; Olshevsky, A.G.; Ostrick, M.; Padee, A.; Pagano, P.; Panebianco, S.; Parsamyan, B.; Panzieri, D.; Paul, S.; Pawlukiewicz, B.; Pereira, H.; Peshekhonov, D.V.; Peshekhonov, V.D.; Piedigrossi, D.; Piragino, G.; Platchkov, S.; Platzer, K.; Pochodzalla, J.; Polak, J.; Polyakov, V.A.; Pontecorvo, G.; Popov, A.A.; Pretz, J.; Procureur, S.; Quintans, C.; Rajotte, J.-F.; Ramos, S.; Razaq, I.; Rebourgeard, P.; Reggiani, D.; Reicherz, G.; Richter, A.; Robinet, F.; Rocco, E.; Rondio, E.; Ropelewski, L.; Rousse, J.Y.; Rozhdestvensky, A.M.; Ryabchikov, D.; Samartsev, A.G.; Samoylenko, V.D.; Sandacz, A.; Merce, M.Sans; Santos, H.; Sapozhnikov, M.G.; Sauli, F.; Savin, Igor A.; Schiavon, P.; Schill, C.; Schmidt, T.; Schmitt, H.; Schmitt, L.; Schonmeier, P.; Schroeder, W.; Seeharsch, D.; Seimetz, M.; Setter, D.; Shaligin, A.; Shevchenko, O.Yu.; Shishkin, A.A.; Siebert, H.-W.; Silva, L.; Simon, F.; Sinha, L.; Sissakian, A.N.; Slunecka, M.; Smirnov, G.I.; Sora, D.; Sosio, S.; Sozzi, F.; Srnka, A.; Stinzing, F.; Stolarski, M.; Sugonyaev, V.P.; Sulc, M.; Sulej, R.; Tarte, G.; Takabayashi, N.; Tchalishev, V.V.; Tessaro, S.; Tessarotto, F.; Teufel, A.; Thers, D.; Tkatchev, L.G.; Toeda, T.; Tokmenin, V.V.; Trippel, S.; Urban, J.; Valbuena, R.; Venugopal, G.; Virius, M.; Vlassov, N.V.; Vossen, A.; Wagner, M.; Webb, R.; Weise, E.; Weitzel, Q.; Wiedner, U.; Wiesmann, M.; Windmolders, R.; Wirth, S.; Wislicki, W.; Wollny, H.; Zanetti, A.M.; Zaremba, K.; Zavertyaev, M.; Zhao, J.; Ziegler, R.; Ziembicki, M.; Zlobin, Y.L.; Zvyagin, A.

    2007-01-01T23:59:59.000Z

    The COMPASS experiment makes use of the CERN SPS high-intensitymuon and hadron beams for the investigation of the nucleon spin structure and the spectroscopy of hadrons. One or more outgoing particles are detected in coincidence with the incoming muon or hadron. A large polarized target inside a superconducting solenoid is used for the measurements with the muon beam. Outgoing particles are detected by a two-stage, large angle and large momentum range spectrometer. The setup is built using several types of tracking detectors, according to the expected incident rate, required space resolution and the solid angle to be covered. Particle identification is achieved using a RICH counter and both hadron and electromagnetic calorimeters. The setup has been successfully operated from 2002 onwards using a muon beam. Data with a hadron beam were also collected in 2004. This article describes the main features and performances of the spectrometer in 2004; a short summary of the 2006 upgrade is also given.

  16. Firing of pulverized solvent refined coal

    DOE Patents [OSTI]

    Derbidge, T. Craig (Sunnyvale, CA); Mulholland, James A. (Chapel Hill, NC); Foster, Edward P. (Macungie, PA)

    1986-01-01T23:59:59.000Z

    An air-purged burner for the firing of pulverized solvent refined coal is constructed and operated such that the solvent refined coal can be fired without the coking thereof on the burner components. The air-purged burner is designed for the firing of pulverized solvent refined coal in a tangentially fired boiler.

  17. Zone refining of plutonium metal

    SciTech Connect (OSTI)

    NONE

    1997-05-01T23:59:59.000Z

    The purpose of this study was to investigate zone refining techniques for the purification of plutonium metal. The redistribution of 10 impurity elements from zone melting was examined. Four tantalum boats were loaded with plutonium impurity alloy, placed in a vacuum furnace, heated to 700{degrees}C, and held at temperature for one hour. Ten passes were made with each boat. Metallographic and chemical analyses performed on the plutonium rods showed that, after 10 passes, moderate movement of certain elements were achieved. Molten zone speeds of 1 or 2 inches per hour had no effect on impurity element movement. Likewise, the application of constant or variable power had no effect on impurity movement. The study implies that development of a zone refining process to purify plutonium is feasible. Development of a process will be hampered by two factors: (1) the effect on impurity element redistribution of the oxide layer formed on the exposed surface of the material is not understood, and (2) the tantalum container material is not inert in the presence of plutonium. Cold boat studies are planned, with higher temperature and vacuum levels, to determine the effect on these factors. 5 refs., 1 tab., 5 figs.

  18. Reaping Energy Savings from Petroleum Refining

    E-Print Network [OSTI]

    Deng, A.; Cascone, R.

    2006-01-01T23:59:59.000Z

    REAPING ENERGY SAVINGS FROM PETROLEUM REFINING Alan Deng, Project Manager, San Francisco, CA, Ron Cascone, Project Manager, White Plains, NY, Nexant, Inc. ABSTRACT The refining industry is one of the largest energy users in Pacific Gas... years’ energy conservation and demand-side management program participation. The PG&E’s refinery energy efficiency program (REEP) is designed to address key market barriers and tap into the savings potential from energy-intensive refining processes...

  19. Information on Equal Opportunities at CERN

    E-Print Network [OSTI]

    2003-01-01T23:59:59.000Z

    In response to questions raised at the meeting of the Finance Committee in December 2002, the Management agreed to present a short information document . At its meeting in May 2003, TREF discussed the content of this information document and took note of supplementary information provided in a presentation by CERN's Equal Opportunities Officer, accompanied by the Chairman of the Equal Opportunities Advisory Panel. The Forum concluded that this supplementary information should be included in a revised version of the document, as indicated in section 3 and Annex 1 below. Finally, the Forum took note of a main issue raised by the Panel, namely the need for crèche facilities available to CERN staff. This led to a study commissioned by the Management, recommending the setting up of crèche facilities on the CERN site (Annex 2). However, given the current financial constraints, funding could only be found by setting priorities in the next 5-Yearly Review.

  20. Big Bang Day: The Making of CERN (Episode 1)

    ScienceCinema (OSTI)

    None

    2011-04-25T23:59:59.000Z

    A two-part history of the CERN project. Quentin Cooper explores the fifty-year history of CERN, the European particle physics laboratory in Switzerland. The institution was created to bring scientists together after WW2 .......

  1. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN PS DIVISION

    E-Print Network [OSTI]

    Boyer, Edmond

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN ­ PS DIVISION CERN/PS 2002-016 (AE) CLIC Note 514 practically conserved. However EGUN simulations have been performed to ensure electron laminar flow

  2. CERN Offers UN Advice on Bringing Women into Science

    Broader source: Energy.gov [DOE]

    In CERN’s first opportunity to engage directly with a UN organization since it gained observer status, grad students suggested ways to improve the situation of women in science.

  3. Big Bang Day: The Making of CERN (Episode 1)

    SciTech Connect (OSTI)

    None

    2009-10-06T23:59:59.000Z

    A two-part history of the CERN project. Quentin Cooper explores the fifty-year history of CERN, the European particle physics laboratory in Switzerland. The institution was created to bring scientists together after WW2 .......

  4. CERN and high energy physics, the grand picture

    ScienceCinema (OSTI)

    None

    2011-10-06T23:59:59.000Z

    The lecture will touch on several topics, to illustrate the role of CERN in the present and future of high-energy physics: how does CERN work? What is the role of the scientific community, of bodies like Council and SPC, and of international cooperation, in the definition of CERN's scientific programme? What are the plans for the future of the LHC and of the non-LHC physics programme? What is the role of R&D; and technology transfer at CERN?

  5. Quality Management of CERN Vacuum Controls

    E-Print Network [OSTI]

    Antoniotti, F; Fortescue-Beck, E; Gama, J; Gomes, P; Le Roux, P; Pereira, H F; Pigny, G

    2014-01-01T23:59:59.000Z

    The vacuum controls Section (TE-VSC-ICM) is in charge of the monitoring, maintenance and consolidation of the control systems of all accelerators and detectors in CERN; this represents 6 000 instruments distributed along 128 km of vacuum chambers, often of heterogeneous architectures and of diverse

  6. Firing of pulverized solvent refined coal

    DOE Patents [OSTI]

    Lennon, Dennis R. (Allentown, PA); Snedden, Richard B. (McKeesport, PA); Foster, Edward P. (Macungie, PA); Bellas, George T. (Library, PA)

    1990-05-15T23:59:59.000Z

    A burner for the firing of pulverized solvent refined coal is constructed and operated such that the solvent refined coal can be fired successfully without any performance limitations and without the coking of the solvent refined coal on the burner components. The burner is provided with a tangential inlet of primary air and pulverized fuel, a vaned diffusion swirler for the mixture of primary air and fuel, a center water-cooled conical diffuser shielding the incoming fuel from the heat radiation from the flame and deflecting the primary air and fuel steam into the secondary air, and a watercooled annulus located between the primary air and secondary air flows.

  7. North Dakota Refining Capacity Study

    SciTech Connect (OSTI)

    Dennis Hill; Kurt Swenson; Carl Tuura; Jim Simon; Robert Vermette; Gilberto Marcha; Steve Kelly; David Wells; Ed Palmer; Kuo Yu; Tram Nguyen; Juliam Migliavacca

    2011-01-05T23:59:59.000Z

    According to a 2008 report issued by the United States Geological Survey, North Dakota and Montana have an estimated 3.0 to 4.3 billion barrels of undiscovered, technically recoverable oil in an area known as the Bakken Formation. With the size and remoteness of the discovery, the question became 'can a business case be made for increasing refining capacity in North Dakota?' And, if so what is the impact to existing players in the region. To answer the question, a study committee comprised of leaders in the region's petroleum industry were brought together to define the scope of the study, hire a consulting firm and oversee the study. The study committee met frequently to provide input on the findings and modify the course of the study, as needed. The study concluded that the Petroleum Area Defense District II (PADD II) has an oversupply of gasoline. With that in mind, a niche market, naphtha, was identified. Naphtha is used as a diluent used for pipelining the bitumen (heavy crude) from Canada to crude markets. The study predicted there will continue to be an increase in the demand for naphtha through 2030. The study estimated the optimal configuration for the refinery at 34,000 barrels per day (BPD) producing 15,000 BPD of naphtha and a 52 percent refinery charge for jet and diesel yield. The financial modeling assumed the sponsor of a refinery would invest its own capital to pay for construction costs. With this assumption, the internal rate of return is 9.2 percent which is not sufficient to attract traditional investment given the risk factor of the project. With that in mind, those interested in pursuing this niche market will need to identify incentives to improve the rate of return.

  8. Source: Energy Information Administration, Form EIA-782A, "Refiners...

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

    Gallons per Day Motor Gasoline No. 2 Distillate Residual Fuel Oil 5. U.S. Refiner Wholesale Petroleum Product Volumes Figure Percentages of Refiner Wholesale Volumes 1995...

  9. Source: Energy Information Administration, Form EIA-782A, "Refiners...

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

    Gallons per Day Motor Gasoline No. 2 Distillate Residual Fuel Oil 5. U.S. Refiner Wholesale Petroleum Product Volumes Figure Percentages of Refiner Wholesale Volumes 1997...

  10. Source: Energy Information Administration, Form EIA-782A, "Refiners...

    Gasoline and Diesel Fuel Update (EIA)

    Gallons per Day Motor Gasoline No. 2 Distillate Residual Fuel Oil 5. U.S. Refiner Wholesale Petroleum Product Volumes Figure Percentages of Refiner Wholesale Volumes 1996...

  11. Improving NMR Protein Structure Quality by Rosetta Refinement...

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

    NMR Protein Structure Quality by Rosetta Refinement: A Molecular Replacement Study. Improving NMR Protein Structure Quality by Rosetta Refinement: A Molecular Replacement Study....

  12. Introducing Reference Semantics via Refinement Graeme Smith

    E-Print Network [OSTI]

    Smith, Graeme

    Introducing Reference Semantics via Refinement Graeme Smith Software Verification Research Centre, University of Queensland, Australia smith@svrc.uq.edu.au Abstract. Two types of semantics have been given

  13. untitled

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

    generally applied by the refiner con- cerned. Dealer Tank Wagon (DTW) Sales: Wholesale sales of petroleum products priced on a delivered basis to a retail outlet....

  14. The LINAC4 Project at CERN

    E-Print Network [OSTI]

    Arnaudon, L; Bertone, C; Body, Y; Broere, J; Brunner, O; Buzio, M; Carli, C; Caspers, F; Corso, JP; Coupard, J; Dallocchio, A; Dos Santos, N; Garoby, R; Gerigk, F; Hammouti, L; Hanke, K; Jones, M; Kozsar, I; Lettry, J; Lallement, JB; Lombardi, A; Lopez-Hernandez, LA; Maglioni, C; Mathot, S; Maury, S; Mikulec, B; Nisbet, D; Noels, C; Paoluzzi, M; Puccio, B; Raich, U; Ramberger, S; Rossi, C; Schwerg, N; Scrivens, R; Vandoni, G; Weisz, S; Vollaire, J; Vretenar, M; Zickler, T

    2011-01-01T23:59:59.000Z

    As the first step of a long-term programme aiming at an increase in the LHC luminosity, CERN is building a new 160 MeV H¯ linear accelerator, Linac4, to replace the ageing 50 MeV Linac2 as injector to the PS Booster (PSB). Linac4 is an 86-m long normal-conducting linac made of an H¯ source, a Radio Frequency Quadrupole (RFQ), a chopping line and a sequence of three accelerating structures: a Drift-Tube Linac (DTL), a Cell-Coupled DTL (CCDTL) and a Pi-Mode Structure (PIMS). The civil engineering has been recently completed, and construction of the main accelerator components has started with the support of a network of international collaborations. The low-energy section up to 3 MeV including a 3-m long 352 MHz RFQ entirely built at CERN is in the final construction phase and is being installed on a dedicated test stand. The present schedule foresees beam commissioning of the accelerator in the new tunnel in 2013/14; the moment of connection of the new linac to the CERN accelerator chain will depend on the L...

  15. Green Petroleum Refining -Mathematical Models for Optimizing Petroleum Refining Under Emission Constraints

    E-Print Network [OSTI]

    Anderson, Charles H.

    Green Petroleum Refining - Mathematical Models for Optimizing Petroleum Refining Under Emission understand that my thesis may be made electronically available to the public. #12;iii Abstract Petroleum and treating options for petroleum refinery waste streams. The performance of the developed model

  16. An independent refiners approach to RFG

    SciTech Connect (OSTI)

    Czeskleba, M.

    1994-12-31T23:59:59.000Z

    This report was presented by Mike Czeskleba,Senior Business Analyst for Ashland Petroleum Company in Ashland, Kentucky. Ashland is one of the largest independent refiners and a leading marketer of gasoline and other petroleum products in the U.S. The issues addressed in this report concern the use of ethanol as a gasoline extender and renewable oxygenate, and its use in Reformulated Gasolines (RFG). The impact of Clean Air Act requirements for 1995 and beyond on petroleum refiners and producers is discussed. Some of the strategies which Ashland Petroleum Company is using to meet regulation requirements is also presented.

  17. LPCC MB&UE Working Group CERN February 7, 2011

    E-Print Network [OSTI]

    Field, Richard

    of 2! Jan Fiete Grosse-Oetringhaus LPCC MB&UE Meeting September 2010 #12;LPCC MB&UE Working Group CERN

  18. Welding an LHC bending magnet held in place by CERN?s hydraulic press

    E-Print Network [OSTI]

    Laurent Guiraud

    1998-01-01T23:59:59.000Z

    A powerful hydraulic press has been installed at CERN. Rated at 27 000 tonnes, it has enough force to lift a weight equivalent to almost four Eiffel towers. The press is used to hold magnets in place as their casings are welded together or opened up.

  19. Future Programme of COMPASS at CERN

    E-Print Network [OSTI]

    Gerhard K. Mallot

    2012-06-12T23:59:59.000Z

    COMPASS at CERN is preparing for a new series of measurements on the nucleon structure comprising deep virtual Compton scattering and hard exclusive meson production using muon beams, as well as Drell-Yan reactions using a polarised proton target and a negative pion beam. The former will mainly constrain the generalised parton distribution H and determine the transverse size of the nucleon, while the latter measurements will provide information on transverse-momentum dependent parton distribution functions. The projected results of the programme and the necessary hardware upgrades are discussed.

  20. Optimization of the Energy Usage at CERN

    E-Print Network [OSTI]

    Burckhart, H J; Caspers, F; Doré, V; Gatignon, L; Martel, C; Nonis, M; Tommasini, D

    2013-01-01T23:59:59.000Z

    Some of the efforts of CERN to optimize its energy usage are presented. Work is proceeding in several areas: campus and infrastructure, accelerators and beam lines, as well as R&D for future accelerators. The existing building stock is being renovated and new buildings apply an integrated energy concept. The energy efficiency of the accelerators and beam lines can be further enhanced by powering more equipment dynamically only during the time it is really needed. For designing new accelerators novel approaches are being investigated to re-use energy which in today’s installations gets dumped thermally.

  1. Transforming and Refining Abstract Constraint Specifications

    E-Print Network [OSTI]

    Walsh, Toby

    Transforming and Refining Abstract Constraint Specifications Alan M. Frisch1 , Brahim Hnich2 , Ian choose model transformations to reduce greatly the amount of effort that is required to solve a problem by systematic search. It is a consid- erable challenge to automate such transformations. A problem may be viewed

  2. Sudbury: Nickel Smelting and Refining Nickel Production

    E-Print Network [OSTI]

    Toohey, Darin W.

    Sudbury: Nickel Smelting and Refining Nickel Production o Toyota buys most of its nickel from Sudbury to produce its nickel- metal hydride batteries Used in cars such as the Toyota Prius SO2 Emissions o The smelting of nickel = large amount of SO2 released as byproduct 4 metric tons of SO2 per

  3. Focus on Venezuelan heavy crude: refining margins

    SciTech Connect (OSTI)

    Not Available

    1984-01-25T23:59:59.000Z

    Of six crudes refined in the US Gulf Coast, heavy Venezuelan crude Lagunillas (15/sup 0/ API) provides the best margin per barrel. Data for end of December 1983 and the first three weeks of January show that margins on all crudes are on the rise in this market, due to a turnaround in product prices. The lighter crudes are showing the greatest increase in Gross Product Worth. This is having a modest shrinking effect on the margin differential between light and heavy crudes in this market. The domestic crude West Texas Intermediate, at 40/sup 0/ API, provides the highest GPW in this crude slate sample, over US $31 per barrel, compared to GPW of under US $28 per barrel for Lagunillas. Still, as Lagunillas cost about US $8 less than does WTI, refiners with sufficient residue conversion capacity can be earning about US $3.50 more in margin per barrel than they can with WTI. Although few refiners would be using a 15/sup 0/ API crude exclusively for any length of time, heavier oil's inclusion in modern refiners' diets is enhancing their competitive position more than any other single factor. This issue of Energy Detente presents the fuel price/tax series and industrial fuel prices for January 1984 for countries of the Western Hemisphere.

  4. Refining industry trends: Europe and surroundings

    SciTech Connect (OSTI)

    Guariguata, U.G.

    1997-05-01T23:59:59.000Z

    The European refining industry, along with its counterparts, is struggling with low profitability due to excess primary and conversion capacity, high operating costs and impending decisions of stringent environmental regulations that will require significant investments with hard to justify returns. This region was also faced in the early 1980s with excess capacity on the order of 4 MMb/d and satisfying the {open_quotes}at that point{close_quotes} demand by operating at very low utilization rates (60%). As was the case in the US, the rebalancing of the capacity led to the closure of some 51 refineries. Since the early 1990s, the increase in demand growth has essentially balanced the capacity threshold and utilization rates are settled around the 90% range. During the last two decades, the major oil companies have reduced their presence in the European refining sector, giving some state oil companies and producing countries the opportunity to gain access to the consumer market through the purchase of refining capacity in various countries-specifically, Kuwait in Italy; Libya and Venezuela in Germany; and Norway in other areas of Scandinavia. Although the market share for this new cast of characters remains small (4%) relative to participation by the majors (35%), their involvement in the European refining business set the foundation whereby US independent refiners relinquished control over assets that could not be operated profitably as part of a previous vertically integrated structure, unless access to the crude was ensured. The passage of time still seems to render this model valid.

  5. March 2006 I.Efthymiopoulos, CERN 1 MERcury Intense Target

    E-Print Network [OSTI]

    McDonald, Kirk

    and TT2A tunnels are now available Include all the shielding walls and services for the nTOF beam.Haug/CERN Status:Status: System design completed including instrumentation and safety valves Gas N2 exhaust line to TT10 Transfer lines Cold valve box #12;March 2006 I.Efthymiopoulos, CERN 10 Cryogenics F

  6. Grain Refinement of Permanent Mold Cast Copper Base Alloys

    SciTech Connect (OSTI)

    M.Sadayappan; J.P.Thomson; M.Elboujdaini; G.Ping Gu; M. Sahoo

    2005-04-01T23:59:59.000Z

    Grain refinement is a well established process for many cast and wrought alloys. The mechanical properties of various alloys could be enhanced by reducing the grain size. Refinement is also known to improve casting characteristics such as fluidity and hot tearing. Grain refinement of copper-base alloys is not widely used, especially in sand casting process. However, in permanent mold casting of copper alloys it is now common to use grain refinement to counteract the problem of severe hot tearing which also improves the pressure tightness of plumbing components. The mechanism of grain refinement in copper-base alloys is not well understood. The issues to be studied include the effect of minor alloy additions on the microstructure, their interaction with the grain refiner, effect of cooling rate, and loss of grain refinement (fading). In this investigation, efforts were made to explore and understand grain refinement of copper alloys, especially in permanent mold casting conditions.

  7. 5.841 Crystal Structure Refinement, Fall 2006

    E-Print Network [OSTI]

    Mueller, Peter

    This course in crystal structure refinement examines the practical aspects of crystal structure determination from data collection strategies to data reduction and basic and advanced refinement problems of organic and ...

  8. 5.067 Crystal Structure Refinement, Fall 2007

    E-Print Network [OSTI]

    Mueller, Peter

    This course in crystal structure refinement examines the practical aspects of crystal structure determination from data collection strategies to data reduction and basic and advanced refinement problems of organic and ...

  9. Using supercritical fluids to refine hydrocarbons

    DOE Patents [OSTI]

    Yarbro, Stephen Lee

    2014-11-25T23:59:59.000Z

    This is a method to reactively refine hydrocarbons, such as heavy oils with API gravities of less than 20.degree. and bitumen-like hydrocarbons with viscosities greater than 1000 cp at standard temperature and pressure using a selected fluid at supercritical conditions. The reaction portion of the method delivers lighter weight, more volatile hydrocarbons to an attached contacting device that operates in mixed subcritical or supercritical modes. This separates the reaction products into portions that are viable for use or sale without further conventional refining and hydro-processing techniques. This method produces valuable products with fewer processing steps, lower costs, increased worker safety due to less processing and handling, allow greater opportunity for new oil field development and subsequent positive economic impact, reduce related carbon dioxide, and wastes typical with conventional refineries.

  10. Dinosaurs can fly -- High performance refining

    SciTech Connect (OSTI)

    Treat, J.E. [Booz-Allen and Hamilton, Inc., San Francisco, CA (United States)

    1995-09-01T23:59:59.000Z

    High performance refining requires that one develop a winning strategy based on a clear understanding of one`s position in one`s company`s value chain; one`s competitive position in the products markets one serves; and the most likely drivers and direction of future market forces. The author discussed all three points, then described measuring performance of the company. To become a true high performance refiner often involves redesigning the organization as well as the business processes. The author discusses such redesigning. The paper summarizes ten rules to follow to achieve high performance: listen to the market; optimize; organize around asset or area teams; trust the operators; stay flexible; source strategically; all maintenance is not equal; energy is not free; build project discipline; and measure and reward performance. The paper then discusses the constraints to the implementation of change.

  11. Validating Process Refinement with Ontologies , Gerd Groener2

    E-Print Network [OSTI]

    Staab, Steffen

    Validating Process Refinement with Ontologies Yuan Ren1 , Gerd Groener2 , Jens Lemcke3 , Tirdad University of Koblenz-Landau, 3 SAP AG Abstract. A crucial task in process management is the validation of process refinements. A process refinement is a process description in a more fine-grained representation

  12. Hadron Spectroscopy with COMPASS at CERN

    E-Print Network [OSTI]

    Karin Schoenning for the COMPASS collaboration

    2011-12-02T23:59:59.000Z

    The aim of the COMPASS hadron programme is to study the light-quark hadron spectrum, and in particular, to search for evidence of hybrids and glueballs. COMPASS is a fixed-target experiment at the CERN SPS and features a two-stage spectrometer with high momentum resolution, large acceptance, particle identification and calorimetry. A short pilot run in 2004 resulted in the observation of a spin-exotic state with $J^{PC} = 1^{-+}$ consistent with the debated $\\pi1(1600)$. In addition, Coulomb production at low momentum transfer data provide a test of Chiral Perturbation Theory. During 2008 and 2009, a world leading data set was collected with hadron beam which is currently being analysed. The large statistics allows for a thorough decomposition of the data into partial waves. The COMPASS hadron data span over a broad range of channels and shed light on several different aspects of QCD.

  13. The BGU/CERN solar hydrothermal reactor

    E-Print Network [OSTI]

    Bertolucci, Sergio; Caspers, Fritz; Garb, Yaakov; Gross, Amit; Pauletta, Stefano

    2014-01-01T23:59:59.000Z

    We describe a novel solar hydrothermal reactor (SHR) under development by Ben Gurion University (BGU) and the European Organization for Nuclear Research CERN. We describe in broad terms the several novel aspects of the device and, by extension, of the niche it occupies: in particular, enabling direct off-grid conversion of a range of organic feedstocks to sterile useable (solid, liquid) fuels, nutrients, products using only solar energy and water. We then provide a brief description of the high temperature high efficiency panels that provide process heat to the hydrothermal reactor, and review the basics of hydrothermal processes and conversion taking place in this. We conclude with a description of a simulation of the pilot system that will begin operation later this year.

  14. Optics for the Antiproton Decelerator at CERN

    E-Print Network [OSTI]

    Beloshitsky, P F; Maury, S; Möhl, D

    2001-01-01T23:59:59.000Z

    The former Antiproton Collector (AC) at CERN has been transformed into an Antiproton Decelerator (AD) to supply high quality antiproton beams with a momentum of 100 MeV/c (kinetic energy of 5.3 MeV) [1]. As in AC, an-tiprotons are injected at 3.57 GeV/c and cooled by stochastic cooling system. To facilitate the deceleration and to prepare a small emittance beam for the experiments, stochastic cooling at 2 GeV/c and electron cooling at 300 MeV/c and 100 MeV/c has been incorporated. The required optics modifications are described and the results of machine commissioning are discussed.

  15. Quality Management of CERN Vacuum Controls

    E-Print Network [OSTI]

    Antoniotti, F; Fortescue-Beck, E; Gama, J; Gomes, P; Le Roux, P; Pereira, H; Pigny, G

    2014-01-01T23:59:59.000Z

    The vacuum controls Section (TE-VSC-ICM) is in charge of the monitoring, maintenance and consolidation of the control systems of all accelerators and detectors in CERN; this represents 6 000 instruments distributed along 128 km of vacuum chambers, often of heterogeneous architectures and of diverse technical generations. In order to improve the efficiency of the services provided by ICM, to vacuum experts and to accelerator operators, a Quality Management Plan is being put into place. The first step was the standardization of the naming convention across different accelerators. The traceability of problems, requests, repairs, and other actions, has also been put into place (VTL). This was combined with the effort to identify each individual device by a coded label, and register it in a central database (MTF). Occurring in parallel, was the gathering of old documents and the centralization of information concerning architectures, procedures, equipment and settings (EDMS). To describe the topology of control c...

  16. CERN 6 Tesla superconducting persistent dipole/Filming an experiment/Synchrotron radiation from protons

    E-Print Network [OSTI]

    1979-01-01T23:59:59.000Z

    CERN 6 Tesla superconducting persistent dipole/Filming an experiment/Synchrotron radiation from protons

  17. MECS 2006 - Petroleum Refining | 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 ofLetterEconomy andTermsDepartment1|Petroleum Refining MECS 2006 -

  18. CERN Neutrinos to Gran Sasso (CNGS) First Beam

    E-Print Network [OSTI]

    Gschwendtner, E

    2006-01-01T23:59:59.000Z

    The CNGS, CERN Neutrinos to Gran Sasso project, aims at directly detecting muon-neutrino to tau-neutrino oscillations. An intense muon-neutrino beam (10 to the 17 muon neutrinos)is generated at CERN per day and directed towards the Gran Sasso National Laboratory, LNGS, in Italy, 732 km away from CERN. In LNGS large and complex detectors will allow to detect, in particular, the rare tau-neutrinos created by â??oscillation' from muon-neutrinos on their way between CERN and LNGS. On average around three tau-neutrino events are predicted per year in each of the ~2000 ton detectors. The construction of the CNGS beam facility started in September 2000, and the first neutrino beam has been produced in July 2006. In the presently approved physics programme, it is foreseen to run the facility for five years.

  19. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-EP/98128

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-EP/98­128 3 August 1998 LEADING-ORDER QCD ANALYSIS°as, J. Panman, A. Rozanov3) , K. Winter4) , G. Zacek5) and V. Zacek6) CERN, Geneva, Switzerland. F.W. B numbers 05-5HH22P and 05-5MU12P. 9) Inter-University Institute for Nuclear Science, Belgium. 10) Now

  20. Torsion phenomenology at the CERN LHC

    SciTech Connect (OSTI)

    Belyaev, A. S. [Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States); Shapiro, I. L. [Departamento de Fisica - ICE, Universidade Federal de Juiz de Fora, Juiz de Fora, 36036-330, MG (Brazil); Tomsk State Pedagogical University (Russian Federation); Vale, M. A. B. do [Departamento de Ciencias Naturais, Universidade Federal de Sao Joao del Rei, Sao Joao del Rei, 36301-160, MG (Brazil)

    2007-02-01T23:59:59.000Z

    We explore the potential of the CERN Large Hadron Collider (LHC) to test the dynamical torsion parameters. The form of the torsion action can be established from the requirements of consistency of effective quantum field theory. The most phenomenologically relevant part of the torsion tensor is dual to a massive axial vector field. This axial vector has geometric nature, that means it does not belong to any representation of the gauge group of the SM extension or GUT theory. At the same time, torsion should interact with all fermions, that opens the way for the phenomenological applications. We demonstrate that LHC collider can establish unique constraints on the interactions between fermions and torsion field considerably exceeding present experimental lower bounds on the torsion couplings and its mass. It is also shown how possible nonuniversal nature of torsion couplings due to the renormalization group running between the Planck and TeV energy scales can be tested via the combined analysis of Drell-Yan and tt production processes.

  1. Electron beam skull melting and refining of secondary copper

    SciTech Connect (OSTI)

    Bychkov, Y.; Ladokhin, S. [Donetskvtortsvetmet, Donetsk (Ukraine)

    1995-12-31T23:59:59.000Z

    Electron Beam Melting is the most efficient technology for metals and alloys refining. For secondary metals processing the Electron Beam Skull Melting (EBSM) with the electromagnetic stirring (EMS) of melt in the crucible was shown to be the most appropriate. The copper produced by EBSM with EMS possesses higher density and electric conductivity in comparison with other refining methods. The details for high power electrical machines were cast of the copper waste refined by EBSM technology.

  2. Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...

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

    250 Energy Information AdministrationPetroleum Marketing Annual 1999 Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State (Thousand Gallons...

  3. Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...

    Gasoline and Diesel Fuel Update (EIA)

    - - - - W W - - - - - - See footnotes at end of table. 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State 292 Energy...

  4. Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...

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

    220 Energy Information AdministrationPetroleum Marketing Annual 1998 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per...

  5. Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...

    Gasoline and Diesel Fuel Update (EIA)

    220 Energy Information AdministrationPetroleum Marketing Annual 1999 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per...

  6. Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...

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

    Energy Information Administration Petroleum Marketing Annual 1995 Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  7. Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...

    Gasoline and Diesel Fuel Update (EIA)

    134 Energy Information AdministrationPetroleum Marketing Annual 1998 Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  8. Petroleum Products Table 43. Refiner Motor Gasoline Volumes...

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

    220 Energy Information AdministrationPetroleum Marketing Annual 2000 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per...

  9. Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...

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

    Energy Information Administration Petroleum Marketing Annual 1995 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per...

  10. Petroleum Products Table 43. Refiner Motor Gasoline Volumes...

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

    Energy Information Administration Petroleum Marketing Annual 1995 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per...

  11. Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...

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

    250 Energy Information AdministrationPetroleum Marketing Annual 1998 Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State (Thousand Gallons...

  12. Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...

    Gasoline and Diesel Fuel Update (EIA)

    Energy Information Administration Petroleum Marketing Annual 1995 Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State (Thousand Gallons...

  13. Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...

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

    134 Energy Information AdministrationPetroleum Marketing Annual 1999 Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  14. ITP Petroleum Refining: Energy Efficiency Roadmap for Petroleum...

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

    Energy Efficiency Roadmap for Petroleum Refineries in California ITP Petroleum Refining: Energy Efficiency Roadmap for Petroleum Refineries in California refiningroadmap.pdf More...

  15. Table 19. U.S. Refiner Residual Fuel Oil Prices

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

    Prices," source for backcast estimates prior to January 1983. 19. U.S. Refiner Residual Fuel Oil Prices 36 Energy Information Administration Petroleum Marketing Annual 1997...

  16. Table 19. U.S. Refiner Residual Fuel Oil Prices

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

    Prices," source for backcast estimates prior to January 1983. 19. U.S. Refiner Residual Fuel Oil Prices 36 Energy Information Administration Petroleum Marketing Annual 1996...

  17. Source: Energy Information Administration, Form EIA-782A, "Refiners...

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

    Refiner Retail Volumes 1996 Annual Averages Motor Gasoline No. 2 Distillate Propane Kero-jet Residual Fuel Oil Other Energy Information Administration Petroleum Marketing Annual...

  18. Source: Energy Information Administration, Form EIA-782A, "Refiners...

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

    Refiner Retail Volumes 1997 Annual Averages Motor Gasoline No. 2 Distillate Propane Kero-jet Residual Fuel Oil Other Energy Information Administration Petroleum Marketing Annual...

  19. Adaptively refined large eddy simulations of clusters

    E-Print Network [OSTI]

    Maier, A; Schmidt, W; Niemeyer, J C

    2009-01-01T23:59:59.000Z

    We present a numerical scheme for modelling unresolved turbulence in cosmological adaptive mesh refinement codes. As a first application, we study the evolution of turbulence in the intra-cluster medium and in the core of a galaxy cluster. Simulations with and without subgrid scale model are compared in detail. Since the flow in the ICM is subsonic, the global turbulent energy contribution at the unresolved length scales is smaller than 1% of the internal energy. We find that the production of turbulence is closely correlated with merger events occurring in the cluster environment, and its dissipation locally affects the cluster energy budget. Because of this additional source of dissipation, the core temperature is larger and the density is smaller in the presence of subgrid scale turbulence than in the standard adiabatic run, resulting in a higher entropy core value.

  20. CERN Winter School on Supergravity, Strings, and Gauge Theory 2010

    ScienceCinema (OSTI)

    None

    2011-10-06T23:59:59.000Z

    The CERN Winter School on Supergravity, Strings, and Gauge Theory is the analytic continuation of the yearly training school of the former EC-RTN string network "Constituents, Fundamental Forces and Symmetries of the Universe". The 2010 edition of the school is supported and organized by the CERN Theory Divison, and will take place from Monday January 25 to Friday January 29, at CERN. As its predecessors, this school is meant primarily for training of doctoral students and young postdoctoral researchers in recent developments in theoretical high-energy physics and string theory. The programme of the school will consist of five series of pedagogical lectures, complemented by tutorial discussion sessions in the afternoons. Previous schools in this series were organized in 2005 at SISSA in Trieste, and in 2006, 2007, 2008, and 2009 at CERN, Geneva. Other similar schools have been organized in the past by the former related RTN network "The Quantum Structure of Spacetime and the Geometric Nature of Fundamental Interactions". This edition of the school is not funded by the European Union. The school is funded by the CERN Theory Division, and the Arnold Sommerfeld Center at Ludwig-Maximilians University of Munich. Scientific committee: M. Gaberdiel, D. Luest, A. Sevrin, J. Simon, K. Stelle, S. Theisen, A. Uranga, A. Van Proeyen, E. Verlinde Local organizers: A. Uranga, J. Walcher

  1. Parallel Triangular Decompositions of an Oil Refining Simulation Xiaodong Zhang

    E-Print Network [OSTI]

    Moreno Maza, Marc

    important process in oil refining is to separate the crude oil into various oil products. This process the composition of the various oil products in designed refining columns operated under a given set of conditions oil products. This process is called distilla- tion, which is a thermal separation method

  2. Specification and Refinement of a RealTime Control System

    E-Print Network [OSTI]

    Smith, Graeme

    such approach via the specification and refinement of the well­known Steam Boiler Control Problem. The case. These features, although not central to the Steam Boiler Control Problem, are typical of features which must­level (i.e., abstract) specification of the Steam Boiler Control Problem. This specification is refined

  3. Feasibility of Organizations -A Refinement of Chemical Organization Theory

    E-Print Network [OSTI]

    Hinze, Thomas

    Feasibility of Organizations - A Refinement of Chemical Organization Theory with Application to P a theorem providing a criteria for an unfeasible organization. This is a refinement of organization theory organization. Key words: reaction networks, constructive dynamical systems, chem- ical organization theory

  4. On Adaptive Mesh Refinement for Atmospheric Pollution Models

    E-Print Network [OSTI]

    Sandu, Adrian

    On Adaptive Mesh Refinement for Atmospheric Pollution Models Emil M. Constantinescu and Adrian res- olution system for modeling regional air pollution based on the chemical transport model STEM. Keywords: Air Pollution Modeling, Adaptive Mesh Refinement. 1 Introduction Inadequate grid resolution can

  5. Status of the LINAC4 Project at CERN

    E-Print Network [OSTI]

    Hanke, K; Garoby, R; Gerigk, F; Lombardi, A; Maury, S; Rossi, C; Vretenar, M

    2010-01-01T23:59:59.000Z

    The construction of Linac4, a 160 MeV H- Linac, is the first step in upgrading the LHC injector chain. Unlike CERN’s present injector linac, Linac4 will inject into the subsequent synchrotron via charge exchange injection. In a first stage, it will inject into the existing CERN PS Booster. At a later stage, Linac4 has the option to be extended by a superconducting linac (SPL) which could then inject into a new synchrotron (PS2). Construction of Linac4 has started in 2008, and beam operation is presently planned for 2015. An overview of the Linac4 main parameters and design choices is given, and the status of the construction reported.

  6. CAS - CERN Accelerator School: Advanced Accelerator Physics Course

    E-Print Network [OSTI]

    2014-01-01T23:59:59.000Z

    This report presents the proceedings of the Course on Advanced Accelerator Physics organized by the CERN Accelerator School. The course was held in Trondheim, Norway from 18 to 29 August 2013, in collaboration with the Norwegian University of Science and Technology. Its syllabus was based on previous courses and in particular on the course held in Berlin 2003 whose proceedings were published as CERN Yellow Report CERN- 2006-002. The field has seen significant advances in recent years and some topics were presented in a new way and other topics were added. The lectures were supplemented with tutorials on key topics and 14 hours of hands on courses on Optics Design and Corrections, RF Measurement Techniques and Beam Instrumentation and Diagnostics. These courses are a key element of the Advanced Level Course.

  7. Changing System Interfaces Consistently: a New Refinement Strategy for CSP B

    E-Print Network [OSTI]

    Doran, Simon J.

    Changing System Interfaces Consistently: a New Refinement Strategy for CSP B Steve Schneider refinement in the context of CSP B. Our motivation to include this notion of refinement within the CSP B to change the events of a CSP process and the B machines when refining a system. Notions of refinement based

  8. Electron beam cold hearth refining in Vallejo

    SciTech Connect (OSTI)

    Lowe, J.H.C. [Axel Johnson Metals, Inc., Vallejo, CA (United States)

    1994-12-31T23:59:59.000Z

    Electron Beam Cold Hearth Refining Furnace (EBCHR) in Vallejo, California is alive, well, and girding itself for developing new markets. A brief review of the twelve years experience with EBCHR in Vallejo. Acquisition of the Vallejo facility by Axel Johnson Metals, Inc. paves the way for the development of new products and markets. A discussion of some of the new opportunities for the advancement of EBCHR technology. Discussed are advantages to the EBCHR process which include: extended surface area of molten metal exposed to higher vacuum; liberation of insoluble oxide particles to the surface of the melt; higher temperatures that allowed coarse solid particles like carbides and carbonitrides to be suspended in the fluid metal as fine micro-segregates, and enhanced removal of volatile trace impurities like lead, bismuth and cadmium. Future work for the company includes the continued recycling of alloys and also fabricating stainless steel for the piping of chip assembly plants. This is to prevent `killer defects` that ruin a memory chip.

  9. GRChombo : Numerical Relativity with Adaptive Mesh Refinement

    E-Print Network [OSTI]

    Katy Clough; Pau Figueras; Hal Finkel; Markus Kunesch; Eugene A. Lim; Saran Tunyasuvunakool

    2015-03-11T23:59:59.000Z

    Numerical relativity has undergone a revolution in the past decade. With a well-understood mathematical formalism, and full control over the gauge modes, it is now entering an era in which the science can be properly explored. In this work, we introduce GRChombo, a new numerical relativity code written to take full advantage of modern parallel computing techniques. GRChombo's features include full adaptive mesh refinement with block structured Berger-Rigoutsos grid generation which supports non-trivial "many-boxes-in-many-boxes" meshing hierarchies, and massive parallelism through the Message Passing Interface (MPI). GRChombo evolves the Einstein equation with the standard BSSN formalism, with an option to turn on CCZ4 constraint damping if required. We show that GRChombo passes all the standard "Apples-to-Apples" code comparison tests. We also show that it can stably and accurately evolve vacuum black hole spacetimes such as binary black hole mergers, and non-vacuum spacetimes such as scalar collapses into black holes. As an illustration of its AMR capability, we demonstrate the evolution of triple black hole merger, which can be set up trivially in GRChombo.

  10. GRChombo : Numerical Relativity with Adaptive Mesh Refinement

    E-Print Network [OSTI]

    Clough, Katy; Finkel, Hal; Kunesch, Markus; Lim, Eugene A; Tunyasuvunakool, Saran

    2015-01-01T23:59:59.000Z

    Numerical relativity has undergone a revolution in the past decade. With a well-understood mathematical formalism, and full control over the gauge modes, it is now entering an era in which the science can be properly explored. In this work, we introduce GRChombo, a new numerical relativity code written to take full advantage of modern parallel computing techniques. GRChombo's features include full adaptive mesh refinement with block structured Berger-Rigoutsos grid generation which supports non-trivial "many-boxes-in-many-boxes" meshing hierarchies, and massive parallelism through the Message Passing Interface (MPI). GRChombo evolves the Einstein equation with the standard BSSN formalism, with an option to turn on CCZ4 constraint damping if required. We show that GRChombo passes all the standard "Apples-to-Apples" code comparison tests. We also show that it can stably and accurately evolve vacuum black hole spacetimes such as binary black hole mergers, and non-vacuum spacetimes such as scalar collapses into b...

  11. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-EP/98-xxx

    E-Print Network [OSTI]

    Boyer, Edmond

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-EP/98-xxx June 14, 1998 Measurement of beauty hadrons, b ! Xu`, has been performed using almost two million hadronic Z decays collected by the L symmetry. Several measurements of jVubj performed at the (4S) exist to date. The CLEO [4] and ARGUS [5

  12. CERN-EP/2000-131 17 October 2000

    E-Print Network [OSTI]

    Boyer, Edmond

    CERN-EP/2000-131 17 October 2000 Searches for neutral Higgs bosons in e+ e- collisions at centre) Abstract Searches for neutral Higgs bosons are performed with the 237 pb-1 of data collected in 1999 to Higgs bosons within the context of the Standard Model and its minimal supersymmetric extension (MSSM

  13. Hydrogen and Fuel Cells - Refining the Message Initiating a National Dialogue and Educational Agenda

    E-Print Network [OSTI]

    Eggert, Anthony; Kurani, Kenneth S; Turrentine, Tom; Ogden, Joan M; Sperling, Dan; Winston, Emily

    2005-01-01T23:59:59.000Z

    April 1, 2005 Hydrogen and Fuel Cells – Refining the MessageHydrogen and Fuel Cells – Refining the Message Initiating athe communication problem. Hydrogen and fuel cells have now

  14. E-Print Network 3.0 - amerya petroleum refining Sample Search...

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

    ) Petroleum Refining Efficiency: 150 ppm S RFG with MTBE: GBS (d) Petroleum Refining... Eficiency: ... Source: Argonne National Laboratory - GREET Model Project Collection:...

  15. Iterative model-building, structure refinement, and density modification with the PHENIX AutoBuild Wizard

    E-Print Network [OSTI]

    Terwilliger, T. C.; Los Alamos National Laboratory, Mailstop M888, Los Alamos, NM 87545, USA; Lawrence Berkeley National Laboratory, One Cyclotron Road, Building 64R0121, Berkeley, CA 94720, USA; Department of Haematology, University of Cambridge, Cambridge CB2 0XY, England

    2008-01-01T23:59:59.000Z

    Iterative model-building, structure refinement, and densitytool for iterative model- building, structure refinement andusing RESOLVE or TEXTAL model- building, RESOLVE statistical

  16. Source: Energy Information Administration, Form EIA-782A, "Refiners...

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

    S O N D 0 10 20 30 40 50 60 70 1995 Cents per Gallon Excluding Taxes Retail < or 1% Wholesale < or 1% Retail > 1% Wholesale > 1% 7. U.S. Refiner Residual Fuel Oil Prices and...

  17. Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...

    Gasoline and Diesel Fuel Update (EIA)

    150.0 2,026.7 W W 234.5 161.7 - 396.3 See footnotes at end of table. 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State 262 Energy Information...

  18. Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...

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

    253.2 2,222.4 W W 206.4 134.3 - 340.7 See footnotes at end of table. 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State 262 Energy Information...

  19. Petroleum Products Table 43. Refiner Motor Gasoline Volumes...

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

    150.0 2,026.7 W W 234.5 161.7 - 396.3 See footnotes at end of table. 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State 262 Energy Information...

  20. Petroleum Products Table 43. Refiner Motor Gasoline Volumes...

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

    253.2 2,222.4 W W 206.4 134.3 - 340.7 See footnotes at end of table. 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State 262 Energy Information...

  1. Consensus Clustering Algorithms: Comparison and Refinement Andrey Goder

    E-Print Network [OSTI]

    Filkov, Vladimir

    -deterministic clustering algorithms, e.g. K-means, are sensitive to the choice of the initial seed clusters; running K-meansConsensus Clustering Algorithms: Comparison and Refinement Andrey Goder Vladimir Filkov Computer

  2. Source: Energy Information Administration, Form EIA-782A, "Refiners...

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

    Refiner Retail Volumes 1995 Annual Averages Motor Gasoline No. 2 Distillate Propane Kero-jet Residual Fuel Oil Other 39.1% 17.4% 2.2% 32.0% 8.1% 1.1% Energy Information...

  3. Japan`s refiner/marketers headed for major shakeout

    SciTech Connect (OSTI)

    NONE

    1996-08-26T23:59:59.000Z

    Japan`s downstream oil industry is in a state of crisis and headed for a major shakeout. The major catalyst for this was a dramatic deregulation step during April 1996 that allowed refined petroleum product imports by non-refiners. The move, together with a sharp drop in refining margins, falling retail gasoline prices, and a service station sector on the brink of collapse, are all leading to massive changes in the way the country`s refiners and marketers do business. This paper reviews the collapse of corporate profits during this period of deregulation; the development of a new price system geared toward bringing the prices of gasoline, fuel oil, and kerosene into line with each other to offset the fall in gasoline prices; and industry restructuring including mergers, acquisitions, and marketing consolidation. The paper then makes predictions on the outcome of these changes on the Japanese oil industry.

  4. Polygons in Buildings and their Refined Side Lengths

    E-Print Network [OSTI]

    Kapovich, Michael; Leeb, Bernhard; Millson, John J.

    2009-01-01T23:59:59.000Z

    1999. [Bro] K. Brown, Buildings, Springer, 1989. [BuBI] D.AMS, 2001. [D] M. Davis, Buildings are CAT(0), in “Geometryat Springerlink.com POLYGONS IN BUILDINGS AND THEIR REFINED

  5. Steps taken at Malelane refinery to improve refined sugar quality

    E-Print Network [OSTI]

    M Moodley; Pm Schorn

    1997-01-01T23:59:59.000Z

    The refinery at Malelane has in the past produced refined sugar for the consumer market. A decision was taken by the management of Transvaal Sugar (TSB) to produce a quality of refined sugar that would also be acceptable to the industrial and the export markets. The processes that were evaluated and implemented at the Malelane refinery during the past three seasons to achieve this objective, are described.

  6. SetLink the CERN Document Server Link Manager

    E-Print Network [OSTI]

    Le Meur, Jean-Yves

    2000-01-01T23:59:59.000Z

    This paper analyses the problems encountered by electronic libraries to cope with long term keeping of on-line documents. What is thebest solution not to fill in a library system with non persistent addresses ? Different possible solutions are studied, based on theexperience of the CERN Document Server and its library. This paper will stress the importance of using a Link Manager for any long term Web server. It will explain how the CERN SetLink Link Manager is designed to handle a wide range of document types and formats, from photos in JPEG to eprints in PDF. It will also focus onother possibilities offered by using such an application, like automatic figures extraction or concatenation, full text searching andon-the-fly format conversions.

  7. Upgrade of the cryogenic CERN RF test facility

    SciTech Connect (OSTI)

    Pirotte, O.; Benda, V.; Brunner, O.; Inglese, V.; Maesen, P.; Vullierme, B. [CERN - European Organization for Nuclear Research, CH-1211 Geneva 23 (Switzerland); Koettig, T. [ESS - European Spallation Source, Box 176, 221 00 Lund (Sweden)

    2014-01-29T23:59:59.000Z

    With the large number of superconducting radiofrequency (RF) cryomodules to be tested for the former LEP and the present LHC accelerator a RF test facility was erected early in the 1990’s in the largest cryogenic test facility at CERN located at Point 18. This facility consisted of four vertical test stands for single cavities and originally one and then two horizontal test benches for RF cryomodules operating at 4.5 K in saturated helium. CERN is presently working on the upgrade of its accelerator infrastructure, which requires new superconducting cavities operating below 2 K in saturated superfluid helium. Consequently, the RF test facility has been renewed in order to allow efficient cavity and cryomodule tests in superfluid helium and to improve its thermal performances. The new RF test facility is described and its performances are presented.

  8. CERN-PPE/97-70 June 17, 1997

    E-Print Network [OSTI]

    Boyer, Edmond

    CERN-PPE/97-70 June 17, 1997 Search for the Standard Model Higgs Boson in e + e Collisions at ps for the Standard Model Higgs boson. The data sample consists of integrated luminosities of 10:9pb 1, 1:1pb 1, and 9.84 events from all Standard Model processes. This search results in a 95% C.L. lower limit on the Higgs

  9. Adaptive mesh refinement for shocks and material interfaces

    SciTech Connect (OSTI)

    Dai, William Wenlong [Los Alamos National Laboratory

    2010-01-01T23:59:59.000Z

    There are three kinds of adaptive mesh refinement (AMR) in structured meshes. Block-based AMR sometimes over refines meshes. Cell-based AMR treats cells cell by cell and thus loses the advantage of the nature of structured meshes. Patch-based AMR is intended to combine advantages of block- and cell-based AMR, i.e., the nature of structured meshes and sharp regions of refinement. But, patch-based AMR has its own difficulties. For example, patch-based AMR typically cannot preserve symmetries of physics problems. In this paper, we will present an approach for a patch-based AMR for hydrodynamics simulations. The approach consists of clustering, symmetry preserving, mesh continuity, flux correction, communications, management of patches, and load balance. The special features of this patch-based AMR include symmetry preserving, efficiency of refinement across shock fronts and material interfaces, special implementation of flux correction, and patch management in parallel computing environments. To demonstrate the capability of the AMR framework, we will show both two- and three-dimensional hydrodynamics simulations with many levels of refinement.

  10. US refiners choose variety of routes to MTBE

    SciTech Connect (OSTI)

    Rhodes, A.K.

    1992-09-07T23:59:59.000Z

    This paper reports that refiners and merchant manufacturers in the U.S. are gearing up to produce the large volumes of methyl tertiary butyl ether (MTBE) needed to comply with oxygenated gasoline requirements. The 1990 U.S. Clean Air Act Amendments specify that, as of the first of this coming November, gasoline containing a minimum of 2.7 wt % oxygen must be sold in 39 CO-nonattainment cities. Refiners and others are scurrying to bring MTBE capacity on line in time to meet this requirement. Many U.S. refiners already have some operating MTBE capacity, but this will not be nearly enough to meet the looming increase in demand. As a result, additional capacity is being constructed worldwide.

  11. Numerical solution of plasma fluid equations using locally refined grids

    SciTech Connect (OSTI)

    Colella, P., LLNL

    1997-01-26T23:59:59.000Z

    This paper describes a numerical method for the solution of plasma fluid equations on block-structured, locally refined grids. The plasma under consideration is typical of those used for the processing of semiconductors. The governing equations consist of a drift-diffusion model of the electrons and an isothermal model of the ions coupled by Poisson's equation. A discretization of the equations is given for a uniform spatial grid, and a time-split integration scheme is developed. The algorithm is then extended to accommodate locally refined grids. This extension involves the advancement of the discrete system on a hierarchy of levels, each of which represents a degree of refinement, together with synchronization steps to ensure consistency across levels. A brief discussion of a software implementation is followed by a presentation of numerical results.

  12. The US petroleum refining industry in the 1980's

    SciTech Connect (OSTI)

    Not Available

    1990-10-11T23:59:59.000Z

    As part of the EIA program on petroleum, The US Petroleum Refining Industry in the 1980's, presents a historical analysis of the changes that took place in the US petroleum refining industry during the 1980's. It is intended to be of interest to analysts in the petroleum industry, state and federal government officials, Congress, and the general public. The report consists of six chapters and four appendices. Included is a detailed description of the major events and factors that affected the domestic refining industry during this period. Some of the changes that took place in the 1980's are the result of events that started in the 1970's. The impact of these events on US refinery configuration, operations, economics, and company ownership are examined. 23 figs., 11 tabs.

  13. Trends in heavy oil production and refining in California

    SciTech Connect (OSTI)

    Olsen, D.K.; Ramzel, E.B.; Pendergrass, R.A. II.

    1992-07-01T23:59:59.000Z

    This report is one of a series of publications assessing the feasibility of increasing domestic heavy oil production and is part of a study being conducted for the US Department of Energy. This report summarizes trends in oil production and refining in Canada. Heavy oil (10{degrees} to 20{degrees} API gravity) production in California has increased from 20% of the state's total oil production in the early 1940s to 70% in the late 1980s. In each of the three principal petroleum producing districts (Los Angeles Basin, Coastal Basin, and San Joaquin Valley) oil production has peaked then declined at different times throughout the past 30 years. Thermal production of heavy oil has contributed to making California the largest producer of oil by enhanced oil recovery processes in spite of low oil prices for heavy oil and stringent environmental regulation. Opening of Naval Petroleum Reserve No. 1, Elk Hills (CA) field in 1976, brought about a major new source of light oil at a time when light oil production had greatly declined. Although California is a major petroleum-consuming state, in 1989 the state used 13.3 billion gallons of gasoline or 11.5% of US demand but it contributed substantially to the Nation's energy production and refining capability. California is the recipient and refines most of Alaska's 1.7 million barrel per day oil production. With California production, Alaskan oil, and imports brought into California for refining, California has an excess of oil and refined products and is a net exporter to other states. The local surplus of oil inhibits exploitation of California heavy oil resources even though the heavy oil resources exist. Transportation, refining, and competition in the market limit full development of California heavy oil resources.

  14. Trends in heavy oil production and refining in California

    SciTech Connect (OSTI)

    Olsen, D.K.; Ramzel, E.B.; Pendergrass, R.A. II

    1992-07-01T23:59:59.000Z

    This report is one of a series of publications assessing the feasibility of increasing domestic heavy oil production and is part of a study being conducted for the US Department of Energy. This report summarizes trends in oil production and refining in Canada. Heavy oil (10{degrees} to 20{degrees} API gravity) production in California has increased from 20% of the state`s total oil production in the early 1940s to 70% in the late 1980s. In each of the three principal petroleum producing districts (Los Angeles Basin, Coastal Basin, and San Joaquin Valley) oil production has peaked then declined at different times throughout the past 30 years. Thermal production of heavy oil has contributed to making California the largest producer of oil by enhanced oil recovery processes in spite of low oil prices for heavy oil and stringent environmental regulation. Opening of Naval Petroleum Reserve No. 1, Elk Hills (CA) field in 1976, brought about a major new source of light oil at a time when light oil production had greatly declined. Although California is a major petroleum-consuming state, in 1989 the state used 13.3 billion gallons of gasoline or 11.5% of US demand but it contributed substantially to the Nation`s energy production and refining capability. California is the recipient and refines most of Alaska`s 1.7 million barrel per day oil production. With California production, Alaskan oil, and imports brought into California for refining, California has an excess of oil and refined products and is a net exporter to other states. The local surplus of oil inhibits exploitation of California heavy oil resources even though the heavy oil resources exist. Transportation, refining, and competition in the market limit full development of California heavy oil resources.

  15. Time Critical Isosurface Refinement And Smoothing V. Pascucci

    E-Print Network [OSTI]

    Texas at Austin, University of

    the global geometry of the embedding (no self- intersections) of any approximated level of detail: (i) a progressive al- gorithm that builds a multi-resolution surface by successive refine- ments so of the U.S. Depart- ment of Energy by University of California Lawrence Livermore National Laboratory under

  16. Source: Energy Information Administration, Form EIA-782A, "Refiners...

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

    4. U.S. Refiner Wholesale Petroleum Product Prices Figure J F M A M J J A S O N D 0 20 40 60 80 100 120 1996 Cents per Gallon Excluding Taxes Kero-jet Propane No. 1 Distillate No....

  17. Source: Energy Information Administration, Form EIA-782A, "Refiners...

    Gasoline and Diesel Fuel Update (EIA)

    4. U.S. Refiner Wholesale Petroleum Product Prices Figure J F M A M J J A S O N D 0 20 40 60 80 100 120 1995 Cents per Gallon Excluding Taxes Kero-jet Propane No. 1 Distillate No....

  18. Source: Energy Information Administration, Form EIA-782A, "Refiners...

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

    4. U.S. Refiner Wholesale Petroleum Product Prices Figure J F M A M J J A S O N D 0 20 40 60 80 100 120 1997 Cents per Gallon Excluding Taxes Kero-jet Propane No. 1 Distillate No....

  19. Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...

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

    71.8 W 70.5 78.9 W 76.0 83.6 W 69.2 75.2 See footnotes at end of table. 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District and State 176 Energy Information...

  20. Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...

    Gasoline and Diesel Fuel Update (EIA)

    W 68.4 70.8 W W 78.6 W 85.7 81.8 W 69.3 73.8 See footnotes at end of table. 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District and State 176 Energy Information...

  1. Refinement of the One-Copy Serializable Correctness Criterion

    E-Print Network [OSTI]

    Muñoz, Francesc

    Refinement of the One-Copy Serializable Correctness Criterion M. I. Ruiz-Fuertes, F. D. Mu~noz-Esco. Mu~noz-Esco´i Instituto Tecnol´ogico de Inform´atica Universidad Polit´ecnica de Valencia Camino de

  2. Electron beam melting and refining state of the art 1995

    SciTech Connect (OSTI)

    Bakish, R. [ed.

    1995-12-31T23:59:59.000Z

    This is the proceedings of the Electron Beam Melting and Refining - State of the Art 1995 Conference. It contains 23 of the 30 scheduled papers. Papers cover an array of electron beam melting applications, from industrial plating of metal strip, through government work on manufacturing and processing fissile alloys. Separate abstracts have been prepared for articles from this proceedings.

  3. Refining Hygienic Macros for Modules and Separate Compilation Matthias Blume

    E-Print Network [OSTI]

    Blume, Matthias

    Refining Hygienic Macros for Modules and Separate Compilation Matthias Blume Department of Computer of the assumptions hygienic macro systems are based on. We will investigate how these assumptions have to be changed, and the consequences for the construction of hygienic macro expanders. Macro expansion algorithms rely on their ability

  4. Note on refined topological vertex, Jack polynomials and instanton counting

    E-Print Network [OSTI]

    Jianfeng Wu

    2010-12-10T23:59:59.000Z

    In this article, we calculated the refined topological vertex for the one parameter case using the Jack symmetric functions. Also, we obtain the partition function for elliptic N=2 models, the results coincide with those of Nekrasov instanton counting partition functions for the $N=2^{\\ast}$ theories.

  5. PRL A Proof Refinement Calculus for Classical Reasoning

    E-Print Network [OSTI]

    Kreitz, Christoph

    µPRL ­ A Proof Refinement Calculus for Classical Reasoning in Computational Type Theory Nuria Brede, Germany {brede,kreitz}@cs.uni-potsdam.de Abstract. We present a hybrid proof calculus µPRL that combines and show that the restriction of µPRL to µ-safe proof terms is sound and complete for intuitionistic

  6. Refining 31 P nuclear magnetic resonance spectroscopy for marine

    E-Print Network [OSTI]

    Paytan, Adina

    Refining 31 P nuclear magnetic resonance spectroscopy for marine particulate samples: Storage 31 P nuclear magnetic resonance (NMR) spectroscopy has recently been used to characterize phosphorus.e., no storage, refrigeration, freezing, and oven-drying and grinding) prior to extraction for solution 31 P

  7. Department of Computing Stepwise Refinement in Event-B||CSP

    E-Print Network [OSTI]

    Doran, Simon J.

    in Event-B||CSP Part 1: Safety Steve Schneider, Helen Treharne and Heike Wehrheim March 12th 2011 #12;Stepwise Refinement in Event-B CSP Part 1: Safety Steve Schneider1 Helen Treharne1 Heike Wehrheim2 1, 2011 Contents 1 Introduction 3 2 CSP 3 2.1 Notation

  8. An accuracy study of mesh refinement on mapped grids

    E-Print Network [OSTI]

    Calhoun, Donna

    An accuracy study of mesh refinement on mapped grids D. Calhoun and R. J. LeVeque, October, 2003 on a highly skewed portion of a mapped grid. Smooth and shock-wave solutions to the Euler equations are used interface. Key words: gas dynamics, finite-volume, finite-difference, Cartesian grid, mapped grids

  9. Particle Physics Aspects of Antihydrogen Studies with ALPHA at CERN

    E-Print Network [OSTI]

    ALPHA Collaboration; M. C. Fujiwara; G. B. Andresen; W. Bertsche; P. D. Bowe; C. C. Bray; E. Butler; C. L. Cesar; S. Chapman; M. Charlton; J. Fajans; R. Funakoshi; D. R. Gill; J. S. Hangst; W. N. Hardy; R. S. Hayano; M. E. Hayden; A. J. Humphries; R. Hydomako; M. J. Jenkins; L. V. Jorgensen; L. Kurchaninov; W. Lai; R. Lambo; N. Madsen; P. Nolan; K. Olchanski; A. Olin; A. Povilus; P. Pusa; F. Robicheaux; E. Sarid; S. Seif El Nasr; D. M. Silveira; J. W. Storey; R. I. Thompson; D. P. van der Werf; L. Wasilenko; J. S. Wurtele; Y. Yamazaki

    2008-05-27T23:59:59.000Z

    We discuss aspects of antihydrogen studies, that relate to particle physics ideas and techniques, within the context of the ALPHA experiment at CERN's Antiproton Decelerator facility. We review the fundamental physics motivations for antihydrogen studies, and their potential physics reach. We argue that initial spectroscopy measurements, once antihydrogen is trapped, could provide competitive tests of CPT, possibly probing physics at the Planck Scale. We discuss some of the particle detection techniques used in ALPHA. Preliminary results from commissioning studies of a partial system of the ALPHA Si vertex detector are presented, the results of which highlight the power of annihilation vertex detection capability in antihydrogen studies.

  10. The use of Fourier reverse transforms in crystallographic phase refinement

    SciTech Connect (OSTI)

    Ringrose, S.

    1997-10-08T23:59:59.000Z

    Often a crystallographer obtains an electron density map which shows only part of the structure. In such cases, the phasing of the trial model is poor enough that the electron density map may show peaks in some of the atomic positions, but other atomic positions are not visible. There may also be extraneous peaks present which are not due to atomic positions. A method for determination of crystal structures that have resisted solution through normal crystallographic methods has been developed. PHASER is a series of FORTRAN programs which aids in the structure solution of poorly phased electron density maps by refining the crystallographic phases. It facilitates the refinement of such poorly phased electron density maps for difficult structures which might otherwise not be solvable. The trial model, which serves as the starting point for the phase refinement, may be acquired by several routes such as direct methods or Patterson methods. Modifications are made to the reverse transform process based on several assumptions. First, the starting electron density map is modified based on the fact that physically the electron density map must be non-negative at all points. In practice a small positive cutoff is used. A reverse Fourier transform is computed based on the modified electron density map. Secondly, the authors assume that a better electron density map will result by using the observed magnitudes of the structure factors combined with the phases calculated in the reverse transform. After convergence has been reached, more atomic positions and less extraneous peaks are observed in the refined electron density map. The starting model need not be very large to achieve success with PHASER; successful phase refinement has been achieved with a starting model that consists of only 5% of the total scattering power of the full molecule. The second part of the thesis discusses three crystal structure determinations.

  11. Proposal for the award of a service contract for the operation, maintenance and other work relating to the low-voltage electrical facilities of CERN’s non- machine buildings

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    Proposal for the award of a service contract for the operation, maintenance and other work relating to the low-voltage electrical facilities of CERN’s non- machine buildings

  12. Multi-platform SCADA GUI Regression Testing at CERN

    E-Print Network [OSTI]

    Burkimsher, P C; Klikovits, S

    2011-01-01T23:59:59.000Z

    The JCOP Framework is a toolkit used widely at CERN for the development of industrial control systems in several domains (i.e. experiments, accelerators and technical infrastructure). The software development started 10 years ago and there is now a large base of production systems running it. For the success of the project, it was essential to formalize and automate the quality assurance process. This paper will present the overall testing strategy and will describe in detail mechanisms used for GUI testing. The choice of a commercial tool (Squish) and the architectural features making it appropriate for our multi-platform environment will be described. Practical difficulties encountered when using the tool in the CERN context are discussed as well as how these were addressed. In the light of initial experience, the test code itself has been recently reworked in object-oriented style to facilitate future maintenance and extension. The current reporting process is described, as well as future plans for easy re...

  13. A.Fabich, CERN Metal Jet in a High Magnetic Field

    E-Print Network [OSTI]

    McDonald, Kirk

    .Fabich, CERN Slide 3 Setup Arrangement Observation area Calibration grid nozzle Ideal mercury jet We only look at data from 4.Akt, June 2002, 20 Tesla solenoid #12;A.Fabich, CERN Slide 4 In/Output variables · B-field 20 Tesla · Driving pressure 75 bar · Nozzle position · Nozzle type 0º/6º (short/long) · Observation

  14. Comparison of the CERN-MEMPHYS and T2HK neutrino oscillation experiments

    E-Print Network [OSTI]

    Thomas Schwetz

    2006-11-20T23:59:59.000Z

    In this talk I compare the physics potential of possible future neutrino oscillation experiments from CERN to a Mt scale water Cerenkov detector at Frejus (MEMPHYS) and of the T2HK proposal in Japan, where for the CERN experiments an SPL Superbeam and a $\\gamma=100$ Beta Beam are considered.

  15. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-SL-2001-061 AP

    E-Print Network [OSTI]

    Keil, Eberhard

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-SL-2001-061 AP CERN-NUFACT Note 99 Summary of WG3 held, on (i) Acceleration and FFAG Machines, (ii) Targetting and Collection, (iii) Cooling, and (iv.5 ¢ £¥¤ ¡§¨ 2.6 ¢ £¥¤ ¡§¨ Target material lHg Hg lHg Collection system Horn Horn Solenoid Energy range/MeV 100

  16. Development of miscella refining process for cottonseed oil-isopropyl alcohol system: laboratory-scale evaluations

    E-Print Network [OSTI]

    Chau, Chi-Fai

    1994-01-01T23:59:59.000Z

    A technologically feasible cottonseed oil-isopropyl alcohol (IPA) miscella refining process was developed to produce high quality cottonseed oil. Individual steps necessary to refine cottonseed oil-IPA miscella were determined and improved...

  17. WELDABILITY OF GRAIN-REFINED Fe-12Ni-0.25Ti STEEL FOR CRYOGENIC APPLICATIONS

    E-Print Network [OSTI]

    Morris Jr., J.W.

    2013-01-01T23:59:59.000Z

    of the Cryogenic Nickel Steels, WRC Bull, 205, May, 1975.REFINED Fe-12Ni-0.25Ti STEEL FOR CRYOGENIC APPLICATIONS D.E.REFINED Fe-12Ni-0.25Ti STEEL FOR CRYOGENIC APPLICATIONS D.

  18. Proposal for the award of a contract for the provision of maintenance services for electrical installations on the CERN site

    E-Print Network [OSTI]

    2014-01-01T23:59:59.000Z

    Proposal for the award of a contract for the provision of maintenance services for electrical installations on the CERN site

  19. Proposal for the award of a contract for the provision of maintenance services for CERN's telephone branch exchange

    E-Print Network [OSTI]

    2014-01-01T23:59:59.000Z

    Proposal for the award of a contract for the provision of maintenance services for CERN's telephone branch exchange

  20. Proposal for the award of a contract for the provision of maintenance services for industrial trucks on the CERN site

    E-Print Network [OSTI]

    2014-01-01T23:59:59.000Z

    Proposal for the award of a contract for the provision of maintenance services for industrial trucks on the CERN site

  1. Council Resolution concerning the admission of the Islamic Republic of Pakistan as Associate Member State at CERN

    E-Print Network [OSTI]

    2014-01-01T23:59:59.000Z

    Council Resolution concerning the admission of the Islamic Republic of Pakistan as Associate Member State at CERN

  2. Pakistan creates national centre for physics/Symmetry violation in a new setting/CERN: Circular solution to

    E-Print Network [OSTI]

    1999-01-01T23:59:59.000Z

    Pakistan creates national centre for physics/Symmetry violation in a new setting/CERN: Circular solution to

  3. Proposal for the award of a contract for the provision of civil engineering services on the CERN site

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    Proposal for the award of a contract for the provision of civil engineering services on the CERN site

  4. Proposal for the award of a contract for the provision of civil engineering design services on the CERN site

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    Proposal for the award of a contract for the provision of civil engineering design services on the CERN site

  5. Proposal for the award of a contract for the provision of electrical installation services on the CERN site

    E-Print Network [OSTI]

    2015-01-01T23:59:59.000Z

    Proposal for the award of a contract for the provision of electrical installation services on the CERN site

  6. Generic configuration management system for documentation and on-line beam optics applications in the CERN PS complex

    E-Print Network [OSTI]

    Autin, Bruno; Jensen, O; Kazymov, A; Lindroos, M; Schinzel, Josi; Wildner, E

    1996-01-01T23:59:59.000Z

    Generic configuration management system for documentation and on-line beam optics applications in the CERN PS complex

  7. Proposal for the Award of a Contract for Maintenance, Operation and Minor Installation Work for CERN Cooling and HVAC Systems

    E-Print Network [OSTI]

    1996-01-01T23:59:59.000Z

    Proposal for the Award of a Contract for Maintenance, Operation and Minor Installation Work for CERN Cooling and HVAC Systems

  8. Proposal concerning the participation of CERN in the procurement of depleted-uranium sheets for the UA1 calorimeter upgrading

    E-Print Network [OSTI]

    1985-01-01T23:59:59.000Z

    Proposal concerning the participation of CERN in the procurement of depleted-uranium sheets for the UA1 calorimeter upgrading

  9. Protein extraction in the refinement of Coastal Bermudagrass

    E-Print Network [OSTI]

    De La Rosa Perez, Luis Bernardo

    1992-01-01T23:59:59.000Z

    , phosphoric acid, gaseous hydrochloric acid, anhydrous ammonia and ethylendiamine (Chang et aL, 1981; Wylie and Steen, 1988). Also the use of organic solvents such as hexane or cadoxen ([Cd(ethylendiamine)3](OH)2, cadmium ethylendiamine) (Ladisch et al... and lignin. Integrated conversion of the entire "barrel of biomass" (also referred to as biomass refining), is essential to obtain good system economics. This study evaluated the use of the Ammonia Fiber Explosion (AFEX) process in an integrated conversion...

  10. EWO Mee'ng September 2012 Petrobras Refining Decision-Making Design

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    & Algorithm Thesis Prospectus Mathematical Modeling for Strategic and Investment Planning in the Oil-Refining Industry Brenno C. Menezes, Lincoln F. Moro Refining Op7miza7on PETROBRAS Petróleo SEWO Mee'ng ­ September 2012 Petrobras Refining Decision-Making Design Thesis Formulation

  11. Refinement and verification of concurrent systems specified in ObjectZ and CSP

    E-Print Network [OSTI]

    Smith, Graeme

    Refinement and verification of concurrent systems specified in Object­Z and CSP Graeme Smith­Z and CSP. A common semantic basis for the two languages enables a unified method of refinement to be used, based upon CSP refinement. To enable state­based techniques to be used for the Object­Z components

  12. Refined similarity hypotheses in shell models of turbulence

    E-Print Network [OSTI]

    Emily S. C. Ching; H. Guo; T. S. Lo

    2008-04-16T23:59:59.000Z

    A major challenge in turbulence research is to understand from first principles the origin of anomalous scaling of the velocity fluctuations in high-Reynolds-number turbulent flows. One important idea was proposed by Kolmogorov [J. Fluid Mech. {\\bf 13}, 82 (1962)], which attributes the anomaly to the variations of the locally averaged energy dissipation rate. Kraichnan later pointed out [J. Fluid Mech. {\\bf 62}, 305 (1973)] that the locally averaged energy dissipation rate is not an inertial-range quantity and a proper inertial-range quantity would be the local energy transfer rate. As a result, Kraichnan's idea attributes the anomaly to the variations of the local energy transfer rate. These ideas, generally known as refined similarity hypotheses, can also be extended to study the anomalous scaling of fluctuations of an active scalar, like the temperature in turbulent convection. In this paper, we examine the validity of these refined similarity hypotheses and their extensions to an active scalar in shell models of turbulence. We find that Kraichnan's refined similarity hypothesis and its extension are valid.

  13. U. S. refiners move into another challenging technical era

    SciTech Connect (OSTI)

    Hall, J.R. (Ashland Oil Inc., Ashland, KY (US))

    1991-10-21T23:59:59.000Z

    With the transition to unleaded gasoline scarcely behind us, another new era is dawning for the U.S. refiner. No one yet knows the exact configuration of the refinery of the future and no two refineries are likely to adapt in exactly the same way. What is certain, however, is that by the year 2000, refineries will be more technologically advanced, their products will be more environmentally acceptable, and their operators will be more highly trained. The typical U.S. refinery in the year 2000 will be located at an existing refinery site because economic and environmental considerations will make it impossible to build new grassroots capacity. As a result of the Clean Air act, the refinery of tomorrow will produce cleaner fuels The entire U.S. gasoline pool will likely be reformulated. Most of the diesel fuel pool will consist of ultralow-sulfur product. And jet fuel-which is experiencing rapid demand growth-will be an increasingly important product. Many existing refining process will remain in use, but they will be more efficient and more technologically advanced. Energy efficiency will be a primary concern, as refiners seek to combat ever-increasing crude oil costs and refinery operating expenses. The refinery of the future also will be much more environmentally acceptable. The article is a closer look at the refinery of the future.

  14. CONSTRAINED-TRANSPORT MAGNETOHYDRODYNAMICS WITH ADAPTIVE MESH REFINEMENT IN CHARM

    SciTech Connect (OSTI)

    Miniati, Francesco [Physics Department, Wolfgang-Pauli-Strasse 27, ETH-Zuerich, CH-8093 Zuerich (Switzerland); Martin, Daniel F., E-mail: fm@phys.ethz.ch, E-mail: DFMartin@lbl.gov [Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States)

    2011-07-01T23:59:59.000Z

    We present the implementation of a three-dimensional, second-order accurate Godunov-type algorithm for magnetohydrodynamics (MHD) in the adaptive-mesh-refinement (AMR) cosmological code CHARM. The algorithm is based on the full 12-solve spatially unsplit corner-transport-upwind (CTU) scheme. The fluid quantities are cell-centered and are updated using the piecewise-parabolic method (PPM), while the magnetic field variables are face-centered and are evolved through application of the Stokes theorem on cell edges via a constrained-transport (CT) method. The so-called multidimensional MHD source terms required in the predictor step for high-order accuracy are applied in a simplified form which reduces their complexity in three dimensions without loss of accuracy or robustness. The algorithm is implemented on an AMR framework which requires specific synchronization steps across refinement levels. These include face-centered restriction and prolongation operations and a reflux-curl operation, which maintains a solenoidal magnetic field across refinement boundaries. The code is tested against a large suite of test problems, including convergence tests in smooth flows, shock-tube tests, classical two- and three-dimensional MHD tests, a three-dimensional shock-cloud interaction problem, and the formation of a cluster of galaxies in a fully cosmological context. The magnetic field divergence is shown to remain negligible throughout.

  15. Developments on the SCADA of CERN Accelerators Vacuum

    E-Print Network [OSTI]

    Antoniotti, F; Boccioli, M; Gomes, P; Pereira, H; Kopylov, L; Mikheev, M; Merker, S

    2014-01-01T23:59:59.000Z

    During the first 3 years of LHC operation, the priority for the SCADA (Supervisory Control And Data Acquisition) of vacuum controls was to attend to user requests, and to improve its ergonomics and efficiency: access & presentation of information simplified and normalized; coherent functionalities & menus across all accelerators; automatic scripts instead of fastidious manual actions; enhanced tools for data analysis and for maintenance interventions. Several decades of cumulative developments, based on heterogeneous technologies and architectures, have been asking for a homogenization effort. The first LHC Long Shutdown (LS1) provides the opportunity to further standardize the vacuum controls systems [1], around Siemens-S7 PLCs (Programmable Logic Controllers) and PVSS SCADA. Meanwhile, exchanges with other Groups at CERN and outside Institutes have been promoted: to follow the global update policy for software libraries; to discuss philosophies and development details; and to accomplish common pro...

  16. An Antiproton Decelerator in the CERN PS Complex

    E-Print Network [OSTI]

    Riunaud, J P; Baird, S A; Boillot, J; Bosser, Jacques; Brouet, M; Caspers, Friedhelm; Chanel, M; Chohan, V; Eriksson, T; Garoby, R; Giannini, R; Giovannozzi, Massimo; Gruber, J; Hémery, J Y; Koziol, Heribert; MacCaferri, R; Maury, S; Metzmacher, K D; Möhl, D; Mulder, H; Pedersen, F; Perriollat, F; Poncet, Alain; Riunaud, J P; Serre, C; Simon, Daniel Jean; Tranquille, G; Tuyn, Jan Willem Nicolaas; Williams, B; Williams, D J

    1996-01-01T23:59:59.000Z

    The present CERN PS low-energy antiproton complex involves 4 machines to collect, cool, decelerate and supply experiments with up to 1010 antiprotons per pulse and per hour of momenta ranging from 0.1 to 2 GeV/c. In view of a possible future physics programme requiring low energy antiprotons, mainly to carry out studies on antihydrogen, a simplified scheme providing at low cost antiprotons at 100 MeV/c has been studied. It requires only one machine, the present Antiproton Collector (AC) converted into a cooler and decelerator (Antiproton Decelerator, AD) and delivering beam to experiments in the hall of the present Antiproton Accumulator Complex (AAC) [1]. This paper describes the feasibility study of such a scheme [2].

  17. Management of Critical Machine Settings for Accelerators at CERN

    E-Print Network [OSTI]

    Sliwinski, W; Kain, V; Kruk, G

    2009-01-01T23:59:59.000Z

    In high energy and high intensity accelerators as the LHC, the energy stored in the beams is orders of magnitude above the damage level of accelerator components like magnets. Uncontrolled release of this energy can lead to serious damage of equipment and long machine downtimes. In order to cope with these potential risks Protection Systems were developed at CERN including two software systems: MCS (Management of Critical Settings) and RBAC (Role Based Access Control). RBAC provides an authentication and authorization facility for access to the critical parts of the control system. A second layer of security is provided by MCS which ensures that critical parameters are coherent within the software and hardware components and can only be changed by an authorized person. The MCS system is aimed at the most critical parameters in either potentially dangerous equipment or protection devices (e.g. Beam Loss Monitors). It is complementary to the RBAC infrastructure. Both systems are fully integrated in the control ...

  18. Ask mostAmericans about their energy con-cerns, and you're likely to get an earful about

    E-Print Network [OSTI]

    Latham, Peter

    --about 1/3 of the projected new demand by 2050--would require 10,000 nuclear power plants, each capable prices. Ask Nate Lewis, and you'll hear about terawatts. Lewis, a chemist at the California Institute will need somewhere around an additional 30 TW by 2050. Coming up with that power in a way that doesn't trig

  19. Exact results on ABJ theory and the refined topological string

    E-Print Network [OSTI]

    Masazumi Honda; Kazumi Okuyama

    2014-07-22T23:59:59.000Z

    We study the partition function of the ABJ theory, which is the N=6 superconformal Chern-Simons matter theory with gauge group U(N)xU(N+M) and Chern-Simons levels (k,-k). We exactly compute the ABJ partition function on a three sphere for various k, M and N via the Fermi gas approach. By using these exact data, we show that the ABJ partition function is completely determined by the refined topological string on local P^1 x P^1, including membrane instanton effects in the M-theory dual.

  20. Minimally refined biomass fuel. [carbohydrate-water-alcohol mixture

    SciTech Connect (OSTI)

    Pearson, R.K.; Hirschfeld, T.B.

    1981-03-26T23:59:59.000Z

    A minimally refined fluid composition, suitable as a fuel mixture and derived from biomass material, is comprised of one or more water-soluble carbohydrates such as sucrose, one or more alcohols having less than four carbons, and water. The carbohydrate provides the fuel source; water-solubilizes the carbohydrate; and the alcohol aids in the combustion of the carbohydrate and reduces the viscosity of the carbohydrate/water solution. Because less energy is required to obtain the carbohydrate from the raw biomass than alcohol, an overall energy savings is realized compared to fuels employing alcohol as the primary fuel.

  1. Changing Trends in the Refining Industry (released in AEO2006)

    Reports and Publications (EIA)

    2006-01-01T23:59:59.000Z

    There have been some major changes in the U.S. refining industry recently, prompted in part by a significant decline in the quality of imported crude oil and by increasing restrictions on the quality of finished products. As a result, high-quality crudes, such as the West Texas Intermediate (WTI) crude that serves as a benchmark for oil futures on the New York Mercantile Exchange (NYMEX), have been trading at record premiums to the OPEC (Organization of the Petroleum Exporting Countries) Basket price.

  2. REFINING PROGRAM HELPS REENERGIZE NEBRASKA UPGRADES | 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 Data Center Home Page onYouTube YouTube Note: Since the.pdfBreakingMay 2015 < prevQuick Guide: Power PurchaseOwner's Role3REFINING PROGRAM

  3. Refining Bio-Oil alongside Petroleum | 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 Data Center Home Page onYouTube YouTube Note: Since the.pdfBreakingMay 2015 < prevQuick Guide:U.N.JuneAs part of itsRefining Bio-Oil

  4. ITP Petroleum Refining: Petroleum Technology Vision 2020 | 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 YourTransport(Fact Sheet),Energy Petroleum Technology Vision 2020 ITP Petroleum Refining:

  5. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-EP/2001-089

    E-Print Network [OSTI]

    Boyer, Edmond

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-EP/2001-089 November 22. 2001 A CVD Diamond Beam has been performed using hits measured in diamonds only. The work described here was carried out by RD

  6. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN{EP/98{142

    E-Print Network [OSTI]

    Boyer, Edmond

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN{EP/98{142 11 September 1998 Search for pair performed. No evidence for a deviation from Standard Model expectations has been observed in the data

  7. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-EP/98-204

    E-Print Network [OSTI]

    Boyer, Edmond

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-EP/98-204 15 December 1998 Heavy Quarkonium.9 × 10-5 . Total J Production The present analysis is performed on the data collected by the L3

  8. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-PPE/95-105

    E-Print Network [OSTI]

    Boyer, Edmond

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-PPE/95-105 July 7, 1995 MEASUREMENT OF THE 0 c of the lifetime of the 0 c we have performed using three independent data samples from two dierent decay modes

  9. California refiners move smoothly into next phase of RFG

    SciTech Connect (OSTI)

    Schaffer, S. [ed.

    1996-05-01T23:59:59.000Z

    The California RFG program (CARB RFG) began at the refinery level in March, the terminal level in April and will begin being enforced at the retail level June 1. By all accounts, early implementation is proceeding smoothly, with prices for both gasoline and oxygenates remaining fairly steady. Analysts labeled the introduction of the world`s cleanest gasoline {open_quotes}a non-event{close_quotes}. By April 1, more than half of the retail gasoline stations in California had fully complying CARB RFG. With cumulative investments of more than $3 billion, California`s refiners will be looking to recapture as much of the cost in the marketplace as possible. The incremental cost of CARB RFG production over federal RFG is estimated by refiners to be about 10{cents}/gal, mainly due to the capital investments needed for hydrotreating to reduce sulfur levels. Early batches of fuel on the spot market sold for about 8{cents}/gal over conventional prices, about 4.5{cents}/gal above federal RFG, according to the Oil Price Information Service (OPIS).

  10. A refined model for characterizing x-ray multilayers

    SciTech Connect (OSTI)

    Oren, A.L.; Henke, B.L.

    1987-12-01T23:59:59.000Z

    The ability to quickly and accurately characterize arbitrary multilayers is very valuable for not only can we use the characterizations to predict the reflectivity of a multilayer for any soft x-ray wavelength, we also can generalize the results to apply to other multilayers of the same type. In addition, we can use the characterizations as a means of evaluating various sputtering environments and refining sputtering techniques to obtain better multilayers. In this report we have obtained improved characterizations for sample molybdenum-silicon and vanadium-silicon multilayers. However, we only examined five crystals overall, so the conclusions that we could draw about the structure of general multilayers is limited. Research involving many multilayers manufactured under the same sputtering conditions is clearly in order. In order to best understand multilayer structures it may be necessary to further refine our model, e.g., adopting a Gaussian form for the interface regions. With such improvements we can expect even better agreement with experimental values and continued concurrence with other characterization techniques. 18 refs., 30 figs., 7 tabs.

  11. MEDIUM POWER 352 MHZ SOLID STATE PULSED RF AMPLIFIERS FOR THE CERN LINAC4 PROJECT

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    MEDIUM POWER 352 MHZ SOLID STATE PULSED RF AMPLIFIERS FOR THE CERN LINAC4 PROJECT J. Broere, J in the CERN Linac4. The amplifiers are water-cooled and can provide up to 33 kW pulsed RF Power, 1.5 ms pulse RF Power for the debuncher cavity. The concept is based on 1.2 kW RF power modules using the latest 6

  12. Results on axion physics from the CAST Experiment at CERN

    E-Print Network [OSTI]

    Christos Eleftheriadis

    2007-06-05T23:59:59.000Z

    Axions are expected to be produced in the sun via the Primakoff process. They may be detected through the inverse process in the laboratory, under the influence of a strong magnetic field, giving rise to X-rays of energies in the range of a few keV. Such an Axion detector is the CERN Axion Solar Telescope (CAST), collecting data since 2003. Results have been published, pushing the axion-photon coupling g$_{a\\gamma}$ below the 10$^{-10}$ GeV$^{-1}$ limit at 95% CL, for axion masses less than 0.02 eV. This limit is nearly an order of magnitude lower than previous experimental limits and surpassed for the first time limits set from astrophysical arguments based on the energy-loss concept. The experiment is currently exploring axion masses in the range of 0.02 eV $axion mass explored will be extended up to the limit of 1.1 eV, testing for the first time the region of theoretical axion models with the axion helioscope method.

  13. Plans for an ERL Test Facility at CERN

    SciTech Connect (OSTI)

    Jensen, Erik [CERN; Bruning, O S [CERN; Calaga, Buchi Rama Rao [CERN; Schirm, Karl-Martin [CERN; Torres-Sanchez, R [CERN; Valloni, Alessandra [CERN; Aulenbacher, Kurt [Mainz; Bogacz, Slawomir [JLAB; Hutton, Andrew [JLAB; Klein, M [University of Liverpool

    2014-12-01T23:59:59.000Z

    The baseline electron accelerator for LHeC and one option for FCC-he is an Energy Recovery Linac. To prepare and study the necessary key technologies, CERNhas started – in collaboration with JLAB and Mainz University – the conceptual design of an ERL Test Facility (ERL-TF). Staged construction will allow the study under different conditions with up to 3 passes, beam energies of up to about 1 GeV and currents of up to 50 mA. The design and development of superconducting cavity modules, including coupler and HOM damper designs, are also of central importance for other existing and future accelerators and their tests are at the heart of the current ERL-TF goals. However, the ERL-TF could also provide a unique infrastructure for several applications that go beyond developing and testing the ERL technology at CERN. In addition to experimental studies of beam dynamics, operational and reliability issues in an ERL, it could equally serve for quench tests of superconducting magnets, as physics experimental facility on its own right or as test stand for detector developments. This contribution will describe the goals and the concept of the facility and the status of the R&D.

  14. Results on axion physics from the CAST Experiment at CERN

    E-Print Network [OSTI]

    Eleftheriadis, Christos A; Aune, S; Barth, K; Belov, A; Beltran, B; Bräuninger, H; Carmona, J; Cebrián, S; Collar, J I; Dafni, T; Davenport, M; Di Lella, L; Englhauser, J; Fanourakis, G K; Ferrer-Ribas, E; Fischer, H; Franz, J; Friedrich, P; Geralis, T; Giomataris, Ioanis; Gninenko, S; Gomez, H; Hasinoff, M; Heinsius, F H; Hoffmann, D H H; Irastorza, I G; Jacoby, J; Jakovcic, K; Kang, D; Königsmann, K C; Kotthaus, R; Krcmar, M; Kousouris, K; Kuster, M; Laki, B; Lasseur, C; Liolios, A; Ljubicic, cA; Lutz, G; Luzón, G; Miller, D; Morales, A; Morales, J; Nordt, A; Ortiz, A; Papaevangelou, T; Placci, A; Raffelt, G; Riege1, H; Rodríguez, A; Ruz, J; Savvidis, I; Semertzidis, Y K; Serpico, Pasquale Dario; Stewart, L; Villar, J; Vogel, J; Walckiers, L; Zioutas, K

    2007-01-01T23:59:59.000Z

    Axions are expected to be produced in the sun via the Primakoff process. They may be detected through the inverse process in the laboratory, under the influence of a strong magnetic field, giving rise to X-rays of energies in the range of a few keV. Such an Axion detector is the CERN Axion Solar Telescope (CAST), collecting data since 2003. Results have been published, pushing the axion-photon coupling g$_{a\\gamma}$ below the 10$^{-10}$ GeV$^{-1}$ limit at 95% CL, for axion masses less than 0.02 eV. This limit is nearly an order of magnitude lower than previous experimental limits and surpassed for the first time limits set from astrophysical arguments based on the energy-loss concept. The experiment is currently exploring axion masses in the range of 0.02 eV $< m_a <$ 1.1 eV. In the next run, currently under preparation, the axion mass explored will be extended up to the limit of 1.1 eV, testing for the first time the region of theoretical axion models with the axion helioscope method.

  15. Influence of Alloy and Solidification Parameters on Grain Refinement in Aluminum Weld Metal due to Inoculation

    SciTech Connect (OSTI)

    Schempp, Philipp [BAM, Germany; Tang, Z. [BIAS, Germany; Cross, Carl E. [Los Alamos National Laboratory; Seefeld, T. [BIAS, Germany; Pittner, A. [BAM, Germany; Rethmeier, M. [BAM, Germany

    2012-06-28T23:59:59.000Z

    The goals are: (1) Establish how much Ti/B grain refiner is need to completely refine aluminum weld metal for different alloys and different welding conditions; (2) Characterize how alloy composition and solidification parameters affect weld metal grain refinement; and (3) Apply relevant theory to understand observed behavior. Conclusions are: (1) additions of Ti/B grain refiner to weld metal in Alloys 1050, 5083, and 6082 resulted in significant grain refinement; (2) grain refinement was more effective in GTAW than LBW, resulting in finer grains at lower Ti content - reason is limited time available for equiaxed grain growth in LBW (inability to occlude columnar grain growth); (3) welding travel speed did not markedly affect grain size within GTAW and LBW clusters; and (4) application of Hunt CET analysis showed experimental G to be on the order of the critical G{sub CET}; G{sub CET} was consistently higher for GTAW than for LBW.

  16. Impact of Environmental Compliance Costs on U.S. Refining Profitability 1995-2001

    Reports and Publications (EIA)

    2003-01-01T23:59:59.000Z

    This report assesses the effects of pollution abatement requirements on the financial performance of U.S. petroleum refining and marketing operations during the 1995 to 2001 period. This study is a follow-up to the October 1997 publication entitled The Impact of Environmental Compliance Costs on U.S. Refining Profitability, that focused on the financial impacts of U.S. refining pollution abatement investment requirements in the 1988 to1995 period.

  17. Table 7. U.S. Refiner Motor Gasoline Volumes by Grade and Sales...

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

    Information Administration Petroleum Marketing Annual 1995 Table 7. U.S. Refiner Motor Gasoline Volumes by Grade and Sales Type (Million Gallons per Day) - Continued Year...

  18. Table A1. Refiner/Reseller Motor Gasoline Prices by Grade, PAD...

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

    AdministrationPetroleum Marketing Annual 1999 401 Table A1. RefinerReseller Motor Gasoline Prices by Grade, PAD District and State, 1984-Present (Cents per Gallon...

  19. Table A1. Refiner/Reseller Motor Gasoline Prices by Grade, PAD...

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

    Information Administration Petroleum Marketing Annual 1995 Table A1. RefinerReseller Motor Gasoline Prices by Grade, PAD District and State, 1984-Present (Cents per Gallon...

  20. Table 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales...

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

    Energy Information AdministrationPetroleum Marketing Annual 1999 Table 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales Type (Cents per Gallon Excluding Taxes) - Continued...

  1. Table 10. U.S. Refiner Oxygenated Motor Gasoline Prices by...

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

    AdministrationPetroleum Marketing Annual 1999 Table 10. U.S. Refiner Oxygenated Motor Gasoline Prices by Grade and Sales Type (Cents per Gallon Excluding Taxes) Year Month...

  2. Table 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales...

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

    Energy Information AdministrationPetroleum Marketing Annual 1998 Table 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales Type (Cents per Gallon Excluding Taxes) - Continued...

  3. Table 7. U.S. Refiner Motor Gasoline Volumes by Grade and Sales...

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

    Energy Information AdministrationPetroleum Marketing Annual 1998 Table 7. U.S. Refiner Motor Gasoline Volumes by Grade and Sales Type (Million Gallons per Day) - Continued Year...

  4. Table 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales...

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

    Information Administration Petroleum Marketing Annual 1995 Table 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales Type (Cents per Gallon Excluding Taxes) - Continued...

  5. Table 2. U.S. Refiner Prices of Petroleum Products to End Users

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

    fuel. Note: Motor gasoline averages and totals prior to October 1993 include leaded gasoline. Sources: Energy Information Administration Form EIA-782A, "Refiners'Gas Plant...

  6. RFA-14-0001 - In the Matter of Commonwealth Oil Refining Company...

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

    both programs would reduce the dependence of Puerto Rican consumers on high cost imported oil and refined petroleum products and that, consequently, both programs were consistent...

  7. Refining and Extending the Business Model with Information Technology: Dell Computer Corporation

    E-Print Network [OSTI]

    Kraemer, Kenneth L; Dedrick, Jason; Yamashiro, Sandra

    1999-01-01T23:59:59.000Z

    of Dell’s Direct Business Model Fuels Fifteenth ConsecutiveAND EXTENDING THE REFINING AND EXTENDING THE BUSINESS MODELBUSINESS MODEL CENTER FOR RESEARCH ON INFORMATION TECHNOLOGY

  8. OPERATOR INTERACTION WITH MODEL-BASED PREDICTIVE CONTROLLERS IN PETROCHEMICAL REFINING

    E-Print Network [OSTI]

    Virginia, University of

    OPERATOR INTERACTION WITH MODEL-BASED PREDICTIVE CONTROLLERS IN PETROCHEMICAL REFINING Greg A success in the petrochemical industry, they have introduced new challenges for the operators and engineers

  9. Table A2. Refiner/Reseller Prices of Aviation Fuels, Propane...

    Gasoline and Diesel Fuel Update (EIA)

    Marketing Annual 1999 421 Table A2. RefinerReseller Prices of Aviation Fuels, Propane, and Kerosene, by PAD District, 1983-Present (Cents per Gallon Excluding Taxes) -...

  10. Table A2. Refiner/Reseller Prices of Aviation Fuels, Propane...

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

    Marketing Annual 1995 467 Table A2. RefinerReseller Prices of Aviation Fuels, Propane, and Kerosene, by PAD District, 1983-Present (Cents per Gallon Excluding Taxes) -...

  11. Quantitative Methods for Strategic and Investment Planning in the Oil-Refining

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    by one refinery Refinery Opera*onal Planning - Simulate the Refining Scenarios Supply Chain Investments Planning - Test the refinery best scenarios

  12. Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil...

    Gasoline and Diesel Fuel Update (EIA)

    Petroleum Marketing Annual 1998 295 Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil Volumes by PAD District and State (Thousand Gallons per Day) - Continued...

  13. Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil...

    Gasoline and Diesel Fuel Update (EIA)

    Petroleum Marketing Annual 1995 337 Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil Volumes by PAD District and State (Thousand Gallons per Day) - Continued...

  14. Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil...

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

    Petroleum Marketing Annual 1999 295 Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil Volumes by PAD District and State (Thousand Gallons per Day) - Continued...

  15. Table A3. Refiner/Reseller Prices of Distillate and Residual...

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

    Marketing Annual 1999 441 Table A3. RefinerReseller Prices of Distillate and Residual Fuel Oils, by PAD District, 1983-Present (Cents per Gallon Excluding Taxes) - Continued...

  16. Table 12. U.S. Refiner Reformulated Motor Gasoline Prices by...

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

    Administration Petroleum Marketing Annual 1995 Table 12. U.S. Refiner Reformulated Motor Gasoline Prices by Grade and Sales Type (Cents per Gallon Excluding Taxes) - Continued...

  17. Table 10. U.S. Refiner Oxygenated Motor Gasoline Prices by...

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

    Administration Petroleum Marketing Annual 1995 Table 10. U.S. Refiner Oxygenated Motor Gasoline Prices by Grade and Sales Type (Cents per Gallon Excluding Taxes) - Continued...

  18. Table 11. U.S. Refiner Oxygenated Motor Gasoline Volumes by...

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

    Administration Petroleum Marketing Annual 1995 Table 11. U.S. Refiner Oxygenated Motor Gasoline Volumes by Grade and Sales Type (Million Gallons per Day) - Continued Year...

  19. ENZO: AN ADAPTIVE MESH REFINEMENT CODE FOR ASTROPHYSICS

    SciTech Connect (OSTI)

    Bryan, Greg L.; Turk, Matthew J. [Columbia University, Department of Astronomy, New York, NY 10025 (United States); Norman, Michael L.; Bordner, James; Xu, Hao; Kritsuk, Alexei G. [CASS, University of California, San Diego, 9500 Gilman Drive La Jolla, CA 92093-0424 (United States); O'Shea, Brian W.; Smith, Britton [Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824 (United States); Abel, Tom; Wang, Peng; Skillman, Samuel W. [Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, Menlo Park, CA 94025 (United States); Wise, John H. [Center for Relativistic Astrophysics, School of Physics, Georgia Institute of Technology, 837 State Street, Atlanta, GA (United States); Reynolds, Daniel R. [Department of Mathematics, Southern Methodist University, Box 750156, Dallas, TX 75205-0156 (United States); Collins, David C. [Department of Physics, Florida State University, Tallahassee, FL 32306 (United States); Harkness, Robert P. [NICS, Oak Ridge National Laboratory, 1 Bethel Valley Rd, Oak Ridge, TN 37831 (United States); Kim, Ji-hoon [Department of Astronomy and Astrophysics, University of California, 1156 High Street, Santa Cruz, CA 95064 (United States); Kuhlen, Michael [Theoretical Astrophysics Center, University of California Berkeley, Hearst Field Annex, Berkeley, CA 94720 (United States); Goldbaum, Nathan [Institute for Astronomy, University of Edinburgh, Edinburgh EH9 3HJ (United Kingdom); Hummels, Cameron [Department of Astronomy/Steward Observatory, University of Arizona, 933 N. Cherry Ave., Tucson, AZ 85721 (United States); Tasker, Elizabeth [Physics Department, Faculty of Science, Hokkaido University, Kita-10 Nishi 8, Kita-ku, Sapporo 060-0810 (Japan); Collaboration: Enzo Collaboration; and others

    2014-04-01T23:59:59.000Z

    This paper describes the open-source code Enzo, which uses block-structured adaptive mesh refinement to provide high spatial and temporal resolution for modeling astrophysical fluid flows. The code is Cartesian, can be run in one, two, and three dimensions, and supports a wide variety of physics including hydrodynamics, ideal and non-ideal magnetohydrodynamics, N-body dynamics (and, more broadly, self-gravity of fluids and particles), primordial gas chemistry, optically thin radiative cooling of primordial and metal-enriched plasmas (as well as some optically-thick cooling models), radiation transport, cosmological expansion, and models for star formation and feedback in a cosmological context. In addition to explaining the algorithms implemented, we present solutions for a wide range of test problems, demonstrate the code's parallel performance, and discuss the Enzo collaboration's code development methodology.

  20. Refining and classifying finite-time Lyapunov exponent ridges

    E-Print Network [OSTI]

    Allshouse, Michael R

    2015-01-01T23:59:59.000Z

    While more rigorous and sophisticated methods for identifying Lagrangian based coherent structures exist, the finite-time Lyapunov exponent (FTLE) field remains a straightforward and popular method for gaining some insight into transport by complex, time-dependent two-dimensional flows. In light of its enduring appeal, and in support of good practice, we begin by investigating the effects of discretization and noise on two numerical approaches for calculating the FTLE field. A practical method to extract and refine FTLE ridges in two-dimensional flows, which builds on previous methods, is then presented. Seeking to better ascertain the role of an FTLE ridge in flow transport, we adapt an existing classification scheme and provide a thorough treatment of the challenges of classifying the types of deformation represented by an FTLE ridge. As a practical demonstration, the methods are applied to an ocean surface velocity field data set generated by a numerical model.

  1. Fuel and oxygen addition for metal smelting or refining process

    DOE Patents [OSTI]

    Schlichting, M.R.

    1994-11-22T23:59:59.000Z

    A furnace for smelting iron ore and/or refining molten iron is equipped with an overhead pneumatic lance, through which a center stream of particulate coal is ejected at high velocity into a slag layer. An annular stream of nitrogen or argon enshrouds the coal stream. Oxygen is simultaneously ejected in an annular stream encircling the inert gas stream. The interposition of the inert gas stream between the coal and oxygen streams prevents the volatile matter in the coal from combusting before it reaches the slag layer. Heat of combustion is thus more efficiently delivered to the slag, where it is needed to sustain the desired reactions occurring there. A second stream of lower velocity oxygen can be delivered through an outermost annulus to react with carbon monoxide gas rising from slag layer, thereby adding still more heat to the furnace. 7 figs.

  2. Guidelines for the development of a GUI-regression-testing-framework for SCADA applications using the example of the JCOP-Framework as used by the CERN LHC and its experiments

    E-Print Network [OSTI]

    Klikovits, Stefan; Grechenig, T; Artner, T

    2011-01-01T23:59:59.000Z

    The aim of this bachelor thesis is to give a theoretical guidance in developing and in- tegrating a GUI-test-framework. Its content is derived from the experience gained during the development of the „Emu“-framework, which is used by CERN for the testing of the user-interface of the „JCOP-Framework“, which provides „an integrated set of guidelines and software tools which is used by Developers of a Control System to develop their part of a Con- trol System application.“ The lessons learned from this project are collected in this thesis, so that others can draw conclusions and use them for creation of their own testing frameworks.

  3. Wavelet Bi-frames with few Generators from Multivariate Refinable Functions

    E-Print Network [OSTI]

    Ehler, Martin

    Wavelet Bi-frames with few Generators from Multivariate Refinable Functions Martin Ehler Bin Han compactly supported wavelet bi-frames with few generators from almost any pair of compactly sup- ported multivariate refinable functions. In our examples, we focus on wavelet bi-frames whose primal and dual wavelets

  4. Refining k-means by Bootstrap and Data Depth Aurora Torrente and Juan Romo

    E-Print Network [OSTI]

    Romo, Juan

    Refining k-means by Bootstrap and Data Depth Aurora Torrente and Juan Romo Departamento de Estad two simple, computationally fast methods that allow the refinement of the initial points of k-means to cluster a given data set. They are based on alternating k-means and the search of the deepest (most

  5. Rapidly-Exploring Roadmaps: Weighing Exploration vs. Refinement in Optimal Motion Planning

    E-Print Network [OSTI]

    North Carolina at Chapel Hill, University of

    Rapidly-Exploring Roadmaps: Weighing Exploration vs. Refinement in Optimal Motion Planning Ron of already explored regions to find better paths. We present the rapidly- exploring roadmap (RRM), a new to explore further or to refine the explored space by adding edges to the current roadmap to find higher

  6. To appear in EPTCS. A CSP account of Event-B refinement

    E-Print Network [OSTI]

    Doran, Simon J.

    To appear in EPTCS. A CSP account of Event-B refinement Steve Schneider Department of Computing a CSP account of Event-B refinement, with a treatment for the first time of splitting events and of anticipated events. To this end, we define a CSP seman- tics for Event-B and show how the different forms

  7. FDR3 --A Modern Refinement Checker for CSP Thomas Gibson-Robinson, Philip Armstrong,

    E-Print Network [OSTI]

    Oxford, University of

    FDR3 -- A Modern Refinement Checker for CSP Thomas Gibson-Robinson, Philip Armstrong, Alexandre.roscoe}@cs.ox.ac.uk Abstract. FDR3 is a complete rewrite of the CSP refinement checker FDR2, incorporating a significant number describe the new algorithm that FDR3 uses to construct its internal representation of CSP processes

  8. FDR3 --A Modern Refinement Checker for CSP Thomas Gibson-Robinson, Philip Armstrong,

    E-Print Network [OSTI]

    Oxford, University of

    FDR3 -- A Modern Refinement Checker for CSP Thomas Gibson-Robinson, Philip Armstrong, Alexandre.roscoe}@cs.ox.ac.uk Abstract. FDR3 is a complete rewrite of the CSP refinement checker FDR2, incorporating a significant number describe the new algorithm that FDR3 uses to construct its in- ternal representation of CSP processes

  9. Don't care in SMT--Building flexible yet efficient abstraction/refinement solvers

    E-Print Network [OSTI]

    Leucker, Martin

    Don't care in SMT--Building flexible yet efficient abstraction/refinement solvers Andreas Bauer Satisfiability Modulo Theories (SMT) solver for a wide range of theories. Our method follows the abstrac- tion/refinement approach to simplify the implementation of custom SMT solvers. The expected performance penalty

  10. Don't care in SMT---Building flexible yet efficient abstraction/refinement solvers

    E-Print Network [OSTI]

    Leucker, Martin

    Don't care in SMT---Building flexible yet efficient abstraction/refinement solvers Andreas Bauer an efficient Satisfiability Modulo Theories (SMT) solver for a wide range of theories. Our method follows the abstrac­ tion/refinement approach to simplify the implementation of custom SMT solvers. The expected

  11. Aspects of Western Refining, Inc.'s Proposed Acquisition of Giant Industries, Inc.

    Reports and Publications (EIA)

    2006-01-01T23:59:59.000Z

    Presentation of company-level, non-proprietary data and relevant aggregate data for U.S. refinery capacity and gasoline marketing of Western Refining and Giant Industries to inform discussions of Western Refining Inc.'s proposed acquisition of Giant Industries Inc. for a total of $1.5 billion, which was announced August 28, 2006.

  12. Towards a Future Linear Collider and The Linear Collider Studies at CERN

    ScienceCinema (OSTI)

    None

    2011-10-06T23:59:59.000Z

    During the week 18-22 October, more than 400 physicists will meet at CERN and in the CICG (International Conference Centre Geneva) to review the global progress towards a future linear collider. The 2010 International Workshop on Linear Colliders will study the physics, detectors and accelerator complex of a linear collider covering both the CLIC and ILC options. Among the topics presented and discussed will be the progress towards the CLIC Conceptual Design Report in 2011, the ILC Technical Design Report in 2012, physics and detector studies linked to these reports, and an increasing numbers of common working group activities. The seminar will give an overview of these topics and also CERN?s linear collider studies, focusing on current activities and initial plans for the period 2011-16. n.b: The Council Chamber is also reserved for this colloquium with a live transmission from the Main Auditorium.

  13. Cosmos++: Relativistic Magnetohydrodynamics on Unstructured Grids with Local Adaptive Refinement

    E-Print Network [OSTI]

    Peter Anninos; P. Chris Fragile; Jay D. Salmonson

    2005-09-09T23:59:59.000Z

    A new code and methodology are introduced for solving the general relativistic magnetohydrodynamic (GRMHD) equations in fixed background spacetimes using time-explicit, finite-volume discretization. The code has options for solving the GRMHD equations using traditional artificial-viscosity (AV) or non-oscillatory central difference (NOCD) methods, or a new extended AV (eAV) scheme using artificial-viscosity together with a dual energy-flux-conserving formulation. The dual energy approach allows for accurate modeling of highly relativistic flows at boost factors well beyond what has been achieved to date by standard artificial viscosity methods. It provides the benefit of Godunov methods in capturing high Lorentz boosted flows but without complicated Riemann solvers, and the advantages of traditional artificial viscosity methods in their speed and flexibility. Additionally, the GRMHD equations are solved on an unstructured grid that supports local adaptive mesh refinement using a fully threaded oct-tree (in three dimensions) network to traverse the grid hierarchy across levels and immediate neighbors. A number of tests are presented to demonstrate robustness of the numerical algorithms and adaptive mesh framework over a wide spectrum of problems, boosts, and astrophysical applications, including relativistic shock tubes, shock collisions, magnetosonic shocks, Alfven wave propagation, blast waves, magnetized Bondi flow, and the magneto-rotational instability in Kerr black hole spacetimes.

  14. Preparation of a primary argon beam for the CERN fixed target physics

    SciTech Connect (OSTI)

    Küchler, D., E-mail: detlef.kuchler@cern.ch; O’Neil, M.; Scrivens, R. [CERN, BE Department, 1211 Geneva 23 (Switzerland)] [CERN, BE Department, 1211 Geneva 23 (Switzerland); Thomae, R. [iThemba LABS, P.O. Box 722, Somerset West 7130 (South Africa)] [iThemba LABS, P.O. Box 722, Somerset West 7130 (South Africa)

    2014-02-15T23:59:59.000Z

    The fixed target experiment NA61 in the North Area of the Super Proton Synchrotron is studying phase transitions in strongly interacting matter. Up to now they used the primary beams available from the CERN accelerator complex (protons and lead ions) or fragmented beams created from the primary lead ion beam. To explore a wider range of energies and densities a request was made to provide primary argon and xenon beams. This paper describes the results of the setting up and 10 week test run of the Ar{sup 11+} beam from the 14.5 GHz ECR ion source and the linear accelerator (Linac3) at CERN.

  15. J4.3 LARGE-EDDY SIMULATION ACROSS A GRID REFINEMENT INTERFACE USING EXPLICIT FILTERING AND RECONSTRUCTION

    E-Print Network [OSTI]

    Chow, Fotini Katopodes

    reflect off grid refinement interfaces, specifically on the outflow boundary from a fine to a coarse grid reflection off grid refinement interfaces by forcing the filter-resolved scale on a fine grid to equal

  16. Pas afgestudeerd aan de VUB en nu reeds te CERN! Isis Van Parijs en Lieselotte Moreels zijn op 5 juli geproclameerd als Master in de

    E-Print Network [OSTI]

    Steels, Luc

    Pas afgestudeerd aan de VUB en nu reeds te CERN! Isis Van Parijs en://cms.web.cern.ch/ ) Foto's: Lieselotte (links) en Isis (rechts) voor hun detector. Foto's: Isis aan het werk in de CMS detector. #12;

  17. EVALUATION OF THE SACCHAROFLEX 2000 REFLECTANCE MEASURING INSTRUMENT FOR REFINED SUGAR COLOUR ESTIMATION AT HULETTS REFINERY

    E-Print Network [OSTI]

    M Moodley; N K Padayachee; V Govender

    Due to the successful use of the Saccharoflex 2000 reflectance measurement instrument on the estimation of refined sugar colour elsewhere in the world, it was decided by Tongaat-Hulett Sugar to evaluate the instrument at the refinery in Durban. Tests were carried out on first, second, third and fourth refined sugars, the results of which showed a good correlation between the ICUMSA colour measurement and the reflectance reading obtained from the Saccharoflex 2000. The instrument offers a number of advantages, the main one being that a refined sugar colour value can be obtained in less than a minute. The refinery has therefore purchased one for process control.

  18. Influence of Aluminum Content on Grain Refinement and Strength of AZ31 Magnesium GTA Weld Metal

    SciTech Connect (OSTI)

    Babu, N. Kishore [Singapore Institute of Manufacturing Technology; Cross, Carl E. [Los Alamos National Laboratory

    2012-06-28T23:59:59.000Z

    The goal is to characterize the effect of Al content on AZ31 weld metal, the grain size and strength, and examine role of Al on grain refinement. The approach is to systematically vary the aluminum content of AZ31 weld metal, Measure average grain size in weld metal, and Measure cross-weld tensile properties and hardness. Conclusions are that: (1) increased Al content in AZ31 weld metal results in grain refinement Reason: higher undercooling during solidification; (2) weld metal grain refinement resulted in increased strength & hardness Reason: grain boundary strengthening; and (3) weld metal strength can be raised to wrought base metal levels.

  19. RAM: a Relativistic Adaptive Mesh Refinement Hydrodynamics Code

    SciTech Connect (OSTI)

    Zhang, Wei-Qun; /KIPAC, Menlo Park; MacFadyen, Andrew I.; /Princeton, Inst. Advanced Study

    2005-06-06T23:59:59.000Z

    The authors have developed a new computer code, RAM, to solve the conservative equations of special relativistic hydrodynamics (SRHD) using adaptive mesh refinement (AMR) on parallel computers. They have implemented a characteristic-wise, finite difference, weighted essentially non-oscillatory (WENO) scheme using the full characteristic decomposition of the SRHD equations to achieve fifth-order accuracy in space. For time integration they use the method of lines with a third-order total variation diminishing (TVD) Runge-Kutta scheme. They have also implemented fourth and fifth order Runge-Kutta time integration schemes for comparison. The implementation of AMR and parallelization is based on the FLASH code. RAM is modular and includes the capability to easily swap hydrodynamics solvers, reconstruction methods and physics modules. In addition to WENO they have implemented a finite volume module with the piecewise parabolic method (PPM) for reconstruction and the modified Marquina approximate Riemann solver to work with TVD Runge-Kutta time integration. They examine the difficulty of accurately simulating shear flows in numerical relativistic hydrodynamics codes. They show that under-resolved simulations of simple test problems with transverse velocity components produce incorrect results and demonstrate the ability of RAM to correctly solve these problems. RAM has been tested in one, two and three dimensions and in Cartesian, cylindrical and spherical coordinates. they have demonstrated fifth-order accuracy for WENO in one and two dimensions and performed detailed comparison with other schemes for which they show significantly lower convergence rates. Extensive testing is presented demonstrating the ability of RAM to address challenging open questions in relativistic astrophysics.

  20. State of heavy oil production and refining in California

    SciTech Connect (OSTI)

    Olsen, D.K.; Ramzel, E.B. [BDM-Oklahoma, Inc., Bartlesville, OK (United States)

    1995-12-31T23:59:59.000Z

    California is unique in the United States because it has the largest heavy oil (10{degrees} to 20{degrees}API gravity) resource, estimated to be in excess of 40 billion barrels. Of the current 941,543 barrels/day of oil produced in California (14% of the U.S. total), 70% or 625,312 barrels/day is heavy oil. Heavy oil constituted only 20% of California`s oil production in the early 1940s, but development of thermal oil production technology in the 1960s allowed the heavy industry to grow and prosper to the point where by the mid-1980s, heavy oil constituted 70% of the state`s oil production. Similar to the rest of the United States, light oil production in the Los Angeles Basin, Coastal Region, and San Joaquin Valley peaked and then declined at different times throughout the past 30 years. Unlike other states, California developed a heavy oil industry that replaced declining light oil production and increased the states total oil production, despite low heavy oil prices, stringent environmental regulations and long and costly delays in developing known oil resources. California`s deep conversion refineries process the nation`s highest sulfur, lowest API gravity crude to make the cleanest transportation fuels available. More efficient vehicles burning cleaner reformulated fuels have significantly reduced the level of ozone precursors (the main contributor to California`s air pollution) and have improved air quality over the last 20 years. In a state where major oil companies dominate, the infrastructure is highly dependent on the 60% of ANS production being refined in California, and California`s own oil production. When this oil is combined with the small volume of imported crude, a local surplus of marketed oil exists that inhibits exploitation of California`s heavy oil resources. As ANS production declines, or if the export restrictions on ANS sales are lifted, a window of opportunity develops for increased heavy oil production.

  1. GovCon Holiday Soiree

    Broader source: Energy.gov [DOE]

    The 6th Annual GovCon Holiday Soiree will be held at the Kennedy Center on Monday, December 8, from 5:30pm to 7:30pm. The event is expected to bring together more than 200 representatives of women-...

  2. Quick Chili Con Carne Ingredients

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    Quick Chili Con Carne Ingredients: 16 ounces kidney beans, canned 1 pound ground turkey 1/2 onion 1 tablespoons chili powder 1 teaspoon cumin Directions 1. Open beans and pour into colander. Rinse under running water to remove sodium. Set aside to drain. 2. Heat skillet to medium. Place ground turkey in skillet

  3. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-EP/2000-155

    E-Print Network [OSTI]

    Boyer, Edmond

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-EP/2000-155 December 22, 2000 Measurement is performed using the GEANT [12] and GHEISHA [13] packages. The Monte Carlo events are reconstructed is performed on the high statistics electron sample of 2434 events discussed in Reference [4]. The backgrounds

  4. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-EP/98-150

    E-Print Network [OSTI]

    Boyer, Edmond

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-EP/98-150 21 September 1998 Single and Multi of single and multi-photon events with missing energy is performed using data collected with the L3 detector states, as well as measurements of the e+ e ! ( ) cross section, have already been performed by L3 [8

  5. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-PPE/97-162

    E-Print Network [OSTI]

    Boyer, Edmond

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-PPE/97-162 December 11, 1997 Performance of Long, F.J.P. Solerd, D. Steelei, M. Stipcevicj, M. Veltrik. Abstract This note describes the performance of Valencia, Valencia, Spain. g. Joint Institute for Nuclear Research, Dubna, Russia. h. Dortmund University

  6. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-EP/2003-013

    E-Print Network [OSTI]

    Boyer, Edmond

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-EP/2003-013 March 26, 2003 Search for Excited Leptons at LEP The L3 Collaboration Abstract A search for charged and neutral excited leptons is performed [5­7]. Searches for excited electrons and neutrinos were also performed at the HERA [8] ep collider

  7. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-PPE/97-44

    E-Print Network [OSTI]

    Boyer, Edmond

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-PPE/97-44 25 April 1997 Inclusive J, 0 and c the inclusive J and c production in Z decays [13,17]. The present analysis is performed on the data collected production ratio is performed and the contribution of c2 states to the signal is investigated. The branching

  8. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-PPE/97-52

    E-Print Network [OSTI]

    Boyer, Edmond

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-PPE/97-52 7 May 1997 Measurement of Hadron{backward asymmetries are performed for the total and the high energy event sam- ples. In the total event sample p s0. For the determination of selection eciencies and backgrounds, Monte Carlo simulations are performed for each centre

  9. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-PPE/97-43

    E-Print Network [OSTI]

    Boyer, Edmond

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-PPE/97-43 25 April 1997 Production of e of untagged e+e ! e+e l+l events performed with the L3 detector [2]. For e- and -pair production the data were

  10. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH rpt61.tex CERN SL/97-61 (AP)

    E-Print Network [OSTI]

    Keil, Eberhard

    of plane ground motion waves on the closed orbit in circular storage rings, such as LEP, LHC, or largerEUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH rpt61.tex CERN SL/97-61 (AP) Effect of Plane Ground Waves on the Closed Orbit in Circular Colliders Eberhard Keil Abstract The effect of plane ground waves

  11. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN SL/98-060 (RF)

    E-Print Network [OSTI]

    Keil, Eberhard

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN SL/98-060 (RF) A Recirculating Electron Accelerator will become available after the decommissioning of LEP. The major design features and subjects of further developments are discussed. Geneva, Switzerland October 9, 1998 #12;1 INTRODUCTION The European nuclear physics

  12. ACCELERATORS FOR THE 21ST CENTURY E. Keil, CERN, Geneva, Switzerland

    E-Print Network [OSTI]

    Keil, Eberhard

    ACCELERATORS FOR THE 21ST CENTURY E. Keil, CERN, Geneva, Switzerland Abstract Accelerators- collider, using the example of CLIC. The main e+ e- beams are generated by a sequence of linear accel" parameters, those in the lower part are related to the beam-beam collisions and particle physics. We in

  13. CERN-INTC-2011-053/INTC-P-317 EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH

    E-Print Network [OSTI]

    spectrometry studies of sodium isotopes at CERN [1]. Instead of the increased binding energy (BE) normally to the ISOLDE and Neutron Time-of-Flight Committee Seeking the Purported Magic Number N = 32 with High-Precision Mass Spectrometry October 6, 2011 S. Kreim1 , D. Beck2 , K. Blaum1 , Ch. B¨ohm1 , Ch. Borgmann1 , M

  14. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-LHC/98-12 (EET)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-LHC/98-12 (EET) May 06,1999 "Experimental, Spain; (n) Universidad Politécnica de Madrid, Madrid, Spain. Abstract Energy and space distributions) such as the Energy Amplifier (EA) [1] has the potential to destroy all actinide elements by fission, thereby

  15. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-EP/98-72

    E-Print Network [OSTI]

    Boyer, Edmond

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-EP/98-72 4 May 1998 Search for Neutral Higgs Bosons Abstract A search for the lightest neutral scalar and neutral pseudoscalar Higgs bosons in the Minimal of the lightest neutral and pseudoscalar Higgs bosons are given as a function of tan . Lower mass limits at the 95

  16. Table 9. U.S. Refiner Conventional Motor Gasoline Volumes by...

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

    5.7 5.9 4.4 12.9 NA 17.3 See footnotes at end of table. 9. U.S. Refiner Conventional Motor Gasoline Volumes by Grade and Sales Type 18 Energy Information Administration ...

  17. Table 10. U.S. Refiner Oxygenated Motor Gasoline Prices by...

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

    98.0 98.0 86.6 75.0 - 80.1 See footnotes at end of table. 10. U.S. Refiner Oxygenated Motor Gasoline Prices by Grade and Sales Type 20 Energy Information Administration ...

  18. Table 13. U.S. Refiner Reformulated Motor Gasoline Volumes by...

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

    3.3 3.4 7.9 3.3 W 11.3 See footnotes at end of table. 13. U.S. Refiner Reformulated Motor Gasoline Volumes by Grade and Sales Type 26 Energy Information Administration ...

  19. Table 12. U.S. Refiner Reformulated Motor Gasoline Prices by...

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

    92.4 92.1 83.7 74.1 W 80.9 See footnotes at end of table. 12. U.S. Refiner Reformulated Motor Gasoline Prices by Grade and Sales Type 24 Energy Information Administration ...

  20. Table 8. U.S. Refiner Conventional Motor Gasoline Prices by...

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

    87.4 86.9 78.3 68.5 W 70.8 See footnotes at end of table. 8. U.S. Refiner Conventional Motor Gasoline Prices by Grade and Sales Type 16 Energy Information Administration ...

  1. Table 12. U.S. Refiner Reformulated Motor Gasoline Prices by...

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

    92.8 92.5 84.0 72.5 W 80.7 See footnotes at end of table. 12. U.S. Refiner Reformulated Motor Gasoline Prices by Grade and Sales Type 24 Energy Information Administration ...

  2. Table 8. U.S. Refiner Conventional Motor Gasoline Prices by...

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

    88.4 87.8 80.1 70.0 NA 72.6 See footnotes at end of table. 8. U.S. Refiner Conventional Motor Gasoline Prices by Grade and Sales Type 16 Energy Information Administration ...

  3. Table 10. U.S. Refiner Oxygenated Motor Gasoline Prices by...

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

    94.0 93.9 83.2 73.8 - 79.3 See footnotes at end of table. 10. U.S. Refiner Oxygenated Motor Gasoline Prices by Grade and Sales Type 20 Energy Information Administration ...

  4. Table 13. U.S. Refiner Reformulated Motor Gasoline Volumes by...

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

    3.6 3.7 7.9 3.1 W 11.0 See footnotes at end of table. 13. U.S. Refiner Reformulated Motor Gasoline Volumes by Grade and Sales Type 26 Energy Information Administration ...

  5. Table 9. U.S. Refiner Conventional Motor Gasoline Volumes by...

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

    5.7 5.9 3.9 12.7 W 16.6 See footnotes at end of table. 9. U.S. Refiner Conventional Motor Gasoline Volumes by Grade and Sales Type 18 Energy Information Administration ...

  6. Process for solvent refining of coal using a denitrogenated and dephenolated solvent

    DOE Patents [OSTI]

    Garg, Diwakar (Macungie, PA); Givens, Edwin N. (Bethlehem, PA); Schweighardt, Frank K. (Allentown, PA)

    1984-01-01T23:59:59.000Z

    A process is disclosed for the solvent refining of non-anthracitic coal at elevated temperatures and pressure in a hydrogen atmosphere using a hydrocarbon solvent which before being recycled in the solvent refining process is subjected to chemical treatment to extract substantially all nitrogenous and phenolic constituents from the solvent so as to improve the conversion of coal and the production of oil in the solvent refining process. The solvent refining process can be either thermal or catalytic. The extraction of nitrogenous compounds can be performed by acid contact such as hydrogen chloride or fluoride treatment, while phenolic extraction can be performed by caustic contact or contact with a mixture of silica and alumina.

  7. Table A2. Refiner/Reseller Prices of Aviation Fuels, Propane...

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

    - W 73.5 See footnotes at end of table. A2. RefinerReseller Prices of Aviation Fuels, Propane, and Kerosene, by PAD District, 1983-Present Energy Information Administration ...

  8. Economic impact of the European Union Emission Trading Scheme : evidence from the refining sector

    E-Print Network [OSTI]

    Lacombe, Romain H

    2008-01-01T23:59:59.000Z

    I study the economic impact of the European Union Emission Trading Scheme (EU ETS) on the refining industry in Europe. I contrast previous ex-ante studies with the lessons from a series of interviews I conducted with ...

  9. Using a conformation-dependent stereochemical library improves crystallographic refinement of proteins

    SciTech Connect (OSTI)

    Tronrud, Dale E.; Berkholz, Donald S.; Karplus, P. Andrew (Oregon State U.)

    2010-07-02T23:59:59.000Z

    The major macromolecular crystallographic refinement packages restrain models to ideal geometry targets defined as single values that are independent of molecular conformation. However, ultrahigh-resolution X-ray models of proteins are not consistent with this concept of ideality and have been used to develop a library of ideal main-chain bond lengths and angles that are parameterized by the {phi}/{psi} angle of the residue [Berkholz et al. (2009), Structure, 17, 1316-1325]. Here, it is first shown that the new conformation-dependent library does not suffer from poor agreement with ultrahigh-resolution structures, whereas current libraries have this problem. Using the TNT refinement package, it is then shown that protein structure refinement using this conformation-dependent library results in models that have much better agreement with library values of bond angles with little change in the R values. These tests support the value of revising refinement software to account for this new paradigm.

  10. A Concept-Driven Construction of the Mondex Protocol using Three Refinements

    E-Print Network [OSTI]

    Banach, Richard

    as closely as possible to the original, or by adapting the problem to fit the style of the tool, thereby, the proof is monolithic, consisting of a single refinement. Other authors, particularly [19] and [20], have

  11. A ConceptDriven Construction of the Mondex Protocol using Three Refinements

    E-Print Network [OSTI]

    Banach, Richard

    as closely as possible to the original, or by adapting the problem to fit the style of the tool, thereby, the proof is monolithic, consisting of a single refinement. Other authors, particularly [19] and [20], have

  12. Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil...

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

    132.9 1,418.3 See footnotes at end of table. 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil Volumes by PAD District and State Energy Information Administration ...

  13. Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil...

    Gasoline and Diesel Fuel Update (EIA)

    839.2 135.0 1,251.9 See footnotes at end of table. 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil Volumes by PAD District and State Energy Information Administration ...

  14. Table A3. Refiner/Reseller Prices of Distillate and Residual...

    Gasoline and Diesel Fuel Update (EIA)

    A3. RefinerReseller Prices of Distillate and Residual Fuel Oils, by PAD District, 1983-Present (Cents per Gallon Excluding Taxes) Geographic Area Year No. 1 Distillate No. 2...

  15. Optimized Execution of Action Chains through Subgoal Refinement Freek Stulp and Michael Beetz

    E-Print Network [OSTI]

    Cremers, Daniel

    Optimized Execution of Action Chains through Subgoal Refinement Freek Stulp and Michael Beetz, Germany {stulp,beetz}@in.tum.de Abstract In this paper we propose a novel computation model

  16. Refinement trajectory and determination of eigenstates by a wavelet based adaptive method

    SciTech Connect (OSTI)

    Pipek, Janos; Nagy, Szilvia [Department of Theoretical Physics, Institute of Physics, Budapest University of Technology and Economics, H-1521 Budapest (Hungary); Department of Telecommunication, Jedlik Anyos Institute of Informatics, Electrical and Mechanical Engineering, Szechenyi Istvan University, H-9026 Gyor, Egyetem ter 1 (Hungary)

    2006-11-07T23:59:59.000Z

    The detail structure of the wave function is analyzed at various refinement levels using the methods of wavelet analysis. The eigenvalue problem of a model system is solved in granular Hilbert spaces, and the trajectory of the eigenstates is traced in terms of the resolution. An adaptive method is developed for identifying the fine structure localization regions, where further refinement of the wave function is necessary.

  17. Refine your search Select options from the menu on the left hand

    E-Print Network [OSTI]

    Yener, Aylin

    ://psu.summon.serialssolutions.comhttp://psu.summon.serialssolutions.com F I N A L LY : RESEARCH AS EASYAS 1-2-3 #12;1 Enter search term into search box. 2 Refine results relevant articles were published in that year. Include or Exclude subject terms from your searchRefine your search Select options from the menu on the left hand side of the results screen

  18. Thickness-based adaptive mesh refinement methods for multi-phase flow simulations with thin regions

    SciTech Connect (OSTI)

    Chen, Xiaodong [The State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190 (China); Yang, Vigor, E-mail: vigor.yang@aerospace.gatech.edu [School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0150 (United States)

    2014-07-15T23:59:59.000Z

    In numerical simulations of multi-scale, multi-phase flows, grid refinement is required to resolve regions with small scales. A notable example is liquid-jet atomization and subsequent droplet dynamics. It is essential to characterize the detailed flow physics with variable length scales with high fidelity, in order to elucidate the underlying mechanisms. In this paper, two thickness-based mesh refinement schemes are developed based on distance- and topology-oriented criteria for thin regions with confining wall/plane of symmetry and in any situation, respectively. Both techniques are implemented in a general framework with a volume-of-fluid formulation and an adaptive-mesh-refinement capability. The distance-oriented technique compares against a critical value, the ratio of an interfacial cell size to the distance between the mass center of the cell and a reference plane. The topology-oriented technique is developed from digital topology theories to handle more general conditions. The requirement for interfacial mesh refinement can be detected swiftly, without the need of thickness information, equation solving, variable averaging or mesh repairing. The mesh refinement level increases smoothly on demand in thin regions. The schemes have been verified and validated against several benchmark cases to demonstrate their effectiveness and robustness. These include the dynamics of colliding droplets, droplet motions in a microchannel, and atomization of liquid impinging jets. Overall, the thickness-based refinement technique provides highly adaptive meshes for problems with thin regions in an efficient and fully automatic manner.

  19. Con Edison Energy Storage Activities

    Gasoline and Diesel Fuel Update (EIA)

    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 for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001)gasoline prices4Consumption TheX I A OCompanyCon Edison

  20. DIVERSAS MANERAS DE GENERAR ENERGIA CON

    E-Print Network [OSTI]

    Gilbes, Fernando

    PLANETA #12;HIDROELECTRICIDAD Es una fuente de energia renovable con la cual se genera electricidad fuentes renovables (estimado del 2005). #12;MODOS DE GENERAR ENERGIA CON AGUA 1. RUEDAS DE AGUA-usadas porDIVERSAS MANERAS DE GENERAR ENERGIA CON AGUA EN EL PLANETA Fernando Gilbes Santaella Departamento

  1. todasuvida: Las personas con diabetes son ms

    E-Print Network [OSTI]

    diabetes Controlesu todasuvida: Las personas con diabetes son más propensas a padecer de enfermedades del corazón que quienes no tienen diabetes. Boletín 631 D Las personas con diabetes tienen mayor- res relacionados con la diabetes, como derrame cerebral, mala circulación en las piernas y pies e

  2. The third, use of quantum mechanics to evaluate the molecular energy and forces, holds promise for future refinements when applied wholesale,

    E-Print Network [OSTI]

    Sali, Andrej

    for future refinements when applied wholesale, but is already capable of producing valuable insight when

  3. Models for environmental impact assessments of releases of radioactive substances from CERN facilities

    E-Print Network [OSTI]

    Vojtyla, P

    2005-01-01T23:59:59.000Z

    The document describes generic models for environmental impact assessments of releases of radioactive substances from CERN facilities. Except for few models developed in the Safety Commission, the models are based on the 1997 Swiss directive HSK-R-41 and on the 2001 IAEA Safety Report No. 19. The writing style is descriptive, facilitating the practical implementation of the models at CERN. There are four scenarios assumed for airborne releases: (1) short-term releases for release limit calculations, (2) actual short-term releases, (3) short-term releases during incidents/accidents, and (4) chronic long-term releases during the normal operation of a facility. For water releases, two scenarios are considered: (1) a release into a river, and (2) a release into a water treatment plant. The document shall be understood as a reference for specific environmental studies involving radioactive releases and as a recommendation of the Safety Commission.

  4. Models for Assessment of the environmental impact of Radioactive releases from CERN facilities

    E-Print Network [OSTI]

    Vojtyla, P

    2002-01-01T23:59:59.000Z

    The document describes generic models for environmental impact assessment of radioactive releases from CERN facilities. Except for few models developed in the TIS Division, the models are based on the 1997 Swiss directive HSK-R-41 and on the 2001 IAEA Safety Report No. 19. The writing style is descriptive, facilitating the practical implementation of the models at CERN. There are four scenarios assumed for airborne releases: (1) short-term releases for release limit calcu¬lations, (2) actual short-term releases, (3) short-term releases during incidents/accidents, and (4) chronic long-term releases during the normal operation of a facility. For water releases, two scenarios are considered: (1) a release into a river, and (2) a release into a water treatment plant. The document shall be understood as a reference for specific environmental studies involving radioactive releases and as a recommendation of the TIS Division.

  5. Commissioning of the CERN LINAC4 BPM System with 50 Mev Proton Beamns

    E-Print Network [OSTI]

    Tan, J; Søby, L; Sordet, M; Wendt, M

    2013-01-01T23:59:59.000Z

    The new Linac4 at CERN will provide a 160 MeV H- ion beam for charge-exchange injection into the existing CERN accelerator complex. Shorted stripline pick-ups placed in the Linac intertank regions and the transfer lines will measure beam orbit, relative beam current, beam phase, and average beam energy via the time-of-flight between two pickups. A prototype Beam Position Monitor (BPM) system has been installed in the transfer line between the existing Linac2 and the Proton Synchrotron Booster (PSB) in order to study and review the complete acquisition chain. This paper presents measurements and performance of this BPM system operating with 50 MeV proton beams, and compares the results with laboratory measurements and electromagnetic simulations.

  6. THREE-RING FFAG COMPLEX FOR H+ E. Keil, CERN, Geneva, Switzerland, A.M. Sessler

    E-Print Network [OSTI]

    Keil, Eberhard

    THREE-RING FFAG COMPLEX FOR H+ and C6+ THERAPY E. Keil, CERN, Geneva, Switzerland, A.M. Sessler+ . Ring 2 accel- erates by a factor 3 in momentum, and is the most diffi- cult one. Rings 1 and 3. In Tab. 1, the particle speeds c are equal in the 1-Inj column of Ring 1 for H+ and in the 2-Inj col- umn

  7. Site Layout of the proposed new Hadrons' Injector Chain at CERN

    E-Print Network [OSTI]

    Baldy, J L; Evans, L; Garoby, R; Gerigk, F; Lindroos, M; López-Hernandez, L A; Maury, S; Poehler, M; Silari, M; Vretenar, M

    2008-01-01T23:59:59.000Z

    The replacement of almost all the LHC injector complex on the Meyrin-site of CERN (Linac2, PSB and PS) is planned within the next 10 years. The layout foreseen for the new accelerators is described in this paper, together with its compatibility with the existing experimental physics facilities. These machines can, after upgrade, supply with high beam power future physics facilities for radioactive ions and/or neutrinos. Their possible layout is also sketched in this document.

  8. Need for refining capacity creates opportunities for producers in Middle East

    SciTech Connect (OSTI)

    Ali, M.S.S. (Bahrain National Oil Co., Awali (Bahrain))

    1994-07-11T23:59:59.000Z

    Oil industry interest in refining has revived in the past few years in response to rising oil consumption. The trend creates opportunities, for countries in the Middle East, which do not own refining assets nearly in proportion to their crude oil reserved. By closing this gap between reserves and refining capacity, the countries can ease some of the instability now characteristic of the oil market. Some major oil producing countries have begun to move downstream. During the 1980s, Venezuela, Kuwait, Saudi Arabia, Libya, and other members of the Organization of Petroleum Exporting Countries acquired refining assets through direct total purchase or joint ventures. Nevertheless, the oil industry remains largely unintegrated, with the Middle East holding two thirds of worldwide oil reserves but only a small share downstream. As worldwide refining capacity swings from a period of surplus toward one in which the need for new capacity will be built. The paper discusses background of the situation, shrinking surplus, investment requirements, sources of capital, and shipping concerns.

  9. Empirical examination of allegations of ''below-cost'' retail selling of gasoline by refiners: Research study No. 038

    SciTech Connect (OSTI)

    Hogarty, T.F.; Lindstrom, P.M.

    1986-10-01T23:59:59.000Z

    It is alleged by some dealers that (major) refiners consistently sell their gasoline through directly operated stations at retail prices below the prices charged to resellers. The results of this examination, involving more than 2000 price comparisons, failed to reveal a single instance where the average monthly retail price at refiner operated stations was below the price charged resellers by refiners. This result obtained not only for all gasoline sales by major refiners, but also for specific grades of gasoline sold by all refiners. Moreover, a large majority of the average monthly price differentials were greater than 6 cents per gallon, and exceeded 10 cents per gallon in a significant number of instances. Thus, the data do not support the allegation of widespread ''below-cost'' selling by refiners through outlets which they own and operate. Therefore, the rationale offered for legislation mandating retail divorcement, or prohibiting ''below-cost'' is not supported by the evidence. 3 figs., 5 tabs.

  10. Automating crystallographic structure solution and refinement of protein–ligand complexes

    SciTech Connect (OSTI)

    Echols, Nathaniel, E-mail: nechols@lbl.gov; Moriarty, Nigel W., E-mail: nechols@lbl.gov; Klei, Herbert E.; Afonine, Pavel V. [Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8235 (United States); Bunkóczi, Gábor [University of Cambridge, Cambridge Institute for Medical Research, Wellcome Trust/MRC Building, Cambridge CB2 0XY (United Kingdom); Headd, Jeffrey J. [Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8235 (United States); McCoy, Airlie J.; Oeffner, Robert D.; Read, Randy J. [University of Cambridge, Cambridge Institute for Medical Research, Wellcome Trust/MRC Building, Cambridge CB2 0XY (United Kingdom); Terwilliger, Thomas C. [Los Alamos National Laboratory, Los Alamos, NM 87545-0001 (United States); Adams, Paul D., E-mail: nechols@lbl.gov [Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8235 (United States); University of California at Berkeley, Berkeley, CA 94720-1762 (United States)

    2014-01-01T23:59:59.000Z

    A software system for automated protein–ligand crystallography has been implemented in the Phenix suite. This significantly reduces the manual effort required in high-throughput crystallographic studies. High-throughput drug-discovery and mechanistic studies often require the determination of multiple related crystal structures that only differ in the bound ligands, point mutations in the protein sequence and minor conformational changes. If performed manually, solution and refinement requires extensive repetition of the same tasks for each structure. To accelerate this process and minimize manual effort, a pipeline encompassing all stages of ligand building and refinement, starting from integrated and scaled diffraction intensities, has been implemented in Phenix. The resulting system is able to successfully solve and refine large collections of structures in parallel without extensive user intervention prior to the final stages of model completion and validation.

  11. Free kick instead of cross-validation in maximum-likelihood refinement of macromolecular crystal structures

    SciTech Connect (OSTI)

    Pražnikar, Jure [Institute Jožef Stefan, Jamova 39, 1000 Ljubljana (Slovenia); University of Primorska, (Slovenia); Turk, Dušan, E-mail: dusan.turk@ijs.si [Institute Jožef Stefan, Jamova 39, 1000 Ljubljana (Slovenia); Center of Excellence for Integrated Approaches in Chemistry and Biology of Proteins, (Slovenia)

    2014-12-01T23:59:59.000Z

    The maximum-likelihood free-kick target, which calculates model error estimates from the work set and a randomly displaced model, proved superior in the accuracy and consistency of refinement of crystal structures compared with the maximum-likelihood cross-validation target, which calculates error estimates from the test set and the unperturbed model. The refinement of a molecular model is a computational procedure by which the atomic model is fitted to the diffraction data. The commonly used target in the refinement of macromolecular structures is the maximum-likelihood (ML) function, which relies on the assessment of model errors. The current ML functions rely on cross-validation. They utilize phase-error estimates that are calculated from a small fraction of diffraction data, called the test set, that are not used to fit the model. An approach has been developed that uses the work set to calculate the phase-error estimates in the ML refinement from simulating the model errors via the random displacement of atomic coordinates. It is called ML free-kick refinement as it uses the ML formulation of the target function and is based on the idea of freeing the model from the model bias imposed by the chemical energy restraints used in refinement. This approach for the calculation of error estimates is superior to the cross-validation approach: it reduces the phase error and increases the accuracy of molecular models, is more robust, provides clearer maps and may use a smaller portion of data for the test set for the calculation of R{sub free} or may leave it out completely.

  12. Studies on design of a process for organo-refining of coal to obtain super clean coal

    SciTech Connect (OSTI)

    Sharma, C.S.; Sharma, D.K. [Indian Inst. of Tech., New Delhi (India). Centre for Energy Studies

    1999-08-01T23:59:59.000Z

    Organo-refining of coal results in refining the coal to obtain super clean coal and residual coal. Super clean coal may be used to obtain value added chemicals, products, and cleaner fuels from coal. In the present work, studies on the design of a semicontinuous process for organo-refining of one ton of coal have been made. The results are reported. This is only a cursory attempt for the design, and further studies may be required for designing this process for use in the development of a scaled-up process of organo-refining of coal.

  13. ,"Motor Gasoline Sales to End Users, Total Refiner Sales Volumes"

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghurajiConventional Gasoline Sales to End Users, Total Refiner Sales Volumes"forUsers, Total Refiner

  14. ,"U.S. Conventional Gasoline Refiner Sales Volumes"

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghurajiConventional Gasoline Sales to End Users, Total Refiner SalesConventional Gasoline Refiner Sales

  15. ,"U.S. Conventional, Average Refiner Gasoline Prices"

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghurajiConventional Gasoline Sales to End Users, Total Refiner SalesConventional Gasoline Refiner

  16. Proposal for the award of a service contract covering the supply, installation and testing of optical fibre cabling systems on the CERN site

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    Proposal for the award of a service contract covering the supply, installation and testing of optical fibre cabling systems on the CERN site

  17. Proposal for the award of a contract for the provision of specialized maintenance service for hoisting equipment on the CERN site

    E-Print Network [OSTI]

    2014-01-01T23:59:59.000Z

    Proposal for the award of a contract for the provision of specialized maintenance service for hoisting equipment on the CERN site

  18. Application for Associate Membership at CERN by the Government of the Islamic Republic of Pakistan Report by the fact-finding Task Force

    E-Print Network [OSTI]

    2014-01-01T23:59:59.000Z

    Application for Associate Membership at CERN by the Government of the Islamic Republic of Pakistan Report by the fact-finding Task Force

  19. CERN: Magnetic milestones/LHC civil engineering/LHCb, a beauty of an experiment/LEP in the stratosphere/Raising the standard

    E-Print Network [OSTI]

    1998-01-01T23:59:59.000Z

    CERN: Magnetic milestones/LHC civil engineering/LHCb, a beauty of an experiment/LEP in the stratosphere/Raising the standard

  20. Proposal for the award of a contract for the supply of Nb3Sn superconducting wire for the 11 T project at CERN

    E-Print Network [OSTI]

    2015-01-01T23:59:59.000Z

    Proposal for the award of a contract for the supply of Nb3Sn superconducting wire for the 11 T project at CERN

  1. Proposal for the award of a contract for the supply of Nb3Sn superconducting wire for the MQXF project at CERN

    E-Print Network [OSTI]

    2015-01-01T23:59:59.000Z

    Proposal for the award of a contract for the supply of Nb3Sn superconducting wire for the MQXF project at CERN

  2. Developing document management for a large-scale engineering project at CERN. The case of ALICE-EDMS with TuoviWDM interface

    E-Print Network [OSTI]

    Saloranta-Rönkä, H

    1999-01-01T23:59:59.000Z

    Developing document management for a large-scale engineering project at CERN. The case of ALICE-EDMS with TuoviWDM interface

  3. Proposal for the award of two service contracts for the operation, maintenance and other work relating to the heating, ventilation, air-conditioning and plumbing facilities at CERN

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    Proposal for the award of two service contracts for the operation, maintenance and other work relating to the heating, ventilation, air-conditioning and plumbing facilities at CERN

  4. Proposal to negotiate the renewal of a blanket purchase contract for the supply of high-power RF grid-tubes for the CERN accelerators

    E-Print Network [OSTI]

    2014-01-01T23:59:59.000Z

    Proposal to negotiate the renewal of a blanket purchase contract for the supply of high-power RF grid-tubes for the CERN accelerators

  5. Proposal for the award of a contract for stores operation and provision of logistics-related activities on the CERN site

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    Proposal for the award of a contract for stores operation and provision of logistics-related activities on the CERN site

  6. Proposal for the award of a contract for the provision of third-party administration services for the CERN Health Insurance Scheme (CHIS)

    E-Print Network [OSTI]

    2014-01-01T23:59:59.000Z

    Proposal for the award of a contract for the provision of third-party administration services for the CERN Health Insurance Scheme (CHIS)

  7. Federal/Industry Development of Energy-Conserving Technologies for the Chemical and Petroleum Refining Industries 

    E-Print Network [OSTI]

    Alston, T. G.; Humphrey, J. L.

    1981-01-01T23:59:59.000Z

    Argonne National Laboratory has started a program to identify future RD&D projects that (i) promise cost-effective savings of scarce fuels in the chemical and petroleum refining industries, (ii) are not likely to be pursued by industry alone...

  8. EIS-0069: Solvent Refined Coal-II Demonstration Project, Fort Martin, Monongalia County, West Virginia

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy developed this statement to assess the potential environmental, economic and social impacts associated with the construction and short-term operation of a 6,000-tons-per-stream-day-capacity facility that will demonstrate the technical operability, economic viability, and environmental acceptability of the solvent refined coal process at Fort Martin, West Virginia.

  9. Table 7. U.S. Refiner Motor Gasoline Volumes by Grade and Sales...

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

    35.2 213.6 9.5 9.8 12.9 16.6 NA 29.5 See footnotes at end of table. 7. U.S. Refiner Motor Gasoline Volumes by Grade and Sales Type 14 Energy Information Administration ...

  10. Table A1. Refiner/Reseller Motor Gasoline Prices by Grade, PAD...

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

    71.6 92.3 78.2 101.8 83.6 87.5 74.7 See footnotes at end of table. A1. RefinerReseller Motor Gasoline Prices by Grade, PAD District, and State, 1984-Present 452 Energy Information...

  11. Table 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales...

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

    62.2 68.5 90.1 89.6 82.4 70.9 NA 75.9 See footnotes at end of table. 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales Type 12 Energy Information Administration ...

  12. Table 11. U.S. Refiner Oxygenated Motor Gasoline Volumes by...

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

    - 4.9 0.4 0.4 0.3 0.4 - 0.7 See footnotes at end of table. 11. U.S. Refiner Oxygenated Motor Gasoline Volumes by Grade and Sales Type 22 Energy Information Administration ...

  13. Table 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales...

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

    61.5 67.3 89.8 89.5 82.2 69.4 71.1 74.9 See footnotes at end of table. 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales Type 12 Energy Information Administration ...

  14. Table 7. U.S. Refiner Motor Gasoline Volumes by Grade and Sales...

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

    33.9 215.8 9.7 10.0 12.1 16.3 0.0 28.4 See footnotes at end of table. 7. U.S. Refiner Motor Gasoline Volumes by Grade and Sales Type 14 Energy Information Administration ...

  15. Table 11. U.S. Refiner Oxygenated Motor Gasoline Volumes by...

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

    W 5.6 0.5 0.5 0.5 0.4 - 0.9 See footnotes at end of table. 11. U.S. Refiner Oxygenated Motor Gasoline Volumes by Grade and Sales Type 22 Energy Information Administration ...

  16. The Nekrasov-Okounkov hook length formula: refinement, elementary proof, extension and applications

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    2008/05/09 The Nekrasov-Okounkov hook length formula: refinement, elementary proof, extension and applications Guo-Niu HAN ABSTRACT. -- The paper is devoted to the derivation of the expan- sion formula function for t-cores. Several applications are derived, including the "marked hook formula". 1

  17. Three Dimensional Adaptive Mesh Refinement on a Spherical Shell for Atmospheric Models with Lagrangian Coordinates

    E-Print Network [OSTI]

    Jablonowski, Christiane

    Three Dimensional Adaptive Mesh Refinement on a Spherical Shell for Atmospheric Models for Atmospheric Research 1. Introduction One of the most important advances needed in global climate models of this project is a parallel adaptive grid library, which is currently under development at the University

  18. Tools for macromolecular model building and refinement into electron cryo-microscopy reconstructions

    SciTech Connect (OSTI)

    Brown, Alan; Long, Fei; Nicholls, Robert A.; Toots, Jaan; Emsley, Paul; Murshudov, Garib, E-mail: garib@mrc-lmb.cam.ac.uk [MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH (United Kingdom)

    2015-01-01T23:59:59.000Z

    A description is given of new tools to facilitate model building and refinement into electron cryo-microscopy reconstructions. The recent rapid development of single-particle electron cryo-microscopy (cryo-EM) now allows structures to be solved by this method at resolutions close to 3 Å. Here, a number of tools to facilitate the interpretation of EM reconstructions with stereochemically reasonable all-atom models are described. The BALBES database has been repurposed as a tool for identifying protein folds from density maps. Modifications to Coot, including new Jiggle Fit and morphing tools and improved handling of nucleic acids, enhance its functionality for interpreting EM maps. REFMAC has been modified for optimal fitting of atomic models into EM maps. As external structural information can enhance the reliability of the derived atomic models, stabilize refinement and reduce overfitting, ProSMART has been extended to generate interatomic distance restraints from nucleic acid reference structures, and a new tool, LIBG, has been developed to generate nucleic acid base-pair and parallel-plane restraints. Furthermore, restraint generation has been integrated with visualization and editing in Coot, and these restraints have been applied to both real-space refinement in Coot and reciprocal-space refinement in REFMAC.

  19. Grain refinement and texture development of cast bi90sb10 alloy via severe plastic deformation

    E-Print Network [OSTI]

    Im, Jae-taek

    2009-05-15T23:59:59.000Z

    The purpose of this work was to study learn about grain refinement mechanisms and texture development in cast n-type Bi90Sb10 alloy caused by severe plastic deformation. The practical objective is to produce a fine grained and textured...

  20. Proceedings of the conference on electron beam melting and refining - state of the art 1996

    SciTech Connect (OSTI)

    Bakish, R. [ed.

    1996-12-31T23:59:59.000Z

    This conference proceedings summarizes state-of-the-art work in the field of electron-beam melting and refining, as presented at the 1996 conference. Papers are grouped as follows: invited papers; tutorial papers; electron beam melting related fundamentals; electron beam evaporation papers; and miscellaneous papers. Separate abstracts have been submitted to the energy database for some contributions to this proceedings.

  1. REFINING AND MAINTAINING THE OPTIMAL PERFORMANCE OF THE CEBAF SRF SYSTEMS *

    E-Print Network [OSTI]

    REFINING AND MAINTAINING THE OPTIMAL PERFORMANCE OF THE CEBAF SRF SYSTEMS * C. Reece, J. Benesch CEBAF at Jefferson Lab is striving to achieve its maximum reliability at the maximum deliverable energy beam time when CEBAF is run near its maximum energy. Operation at increased rf power levels has

  2. Rocky Mountain area petroleum product availability with reduced PADD IV refining capacity

    SciTech Connect (OSTI)

    Hadder, G.R.; Chin, S.M.

    1994-02-01T23:59:59.000Z

    Studies of Rocky Mountain area petroleum product availability with reduced refining capacity in Petroleum Administration for Defense IV (PADD IV, part of the Rocky Mountain area) have been performed with the Oak Ridge National Laboratory Refinery Yield Model, a linear program which has been updated to blend gasolines to satisfy constraints on emissions of nitrogen oxides and winter toxic air pollutants. The studies do not predict refinery closures in PADD IV. Rather, the reduced refining capacities provide an analytical framework for probing the flexibility of petroleum refining and distribution for winter demand conditions in the year 2000. Industry analysts have estimated that, for worst case scenarios, 20 to 35 percent of PADD IV refining capacity could be shut-down as a result of clean air and energy tax legislation. Given these industry projections, the study scenarios provide the following conclusions: The Rocky Mountain area petroleum system would have the capability to satisfy winter product demand with PADD IV refinery capacity shut-downs in the middle of the range of industry projections, but not in the high end of the range of projections. PADD IV crude oil production can be maintained by re-routing crude released from PADD IV refinery demands to satisfy increased crude oil demands in PADDs II (Midwest), III (Gulf Coast), and Washington. Clean Air Act product quality regulations generally do not increase the difficulty of satisfying emissions reduction constraints in the scenarios.

  3. Protein NMR Structures Refined with Rosetta Have Higher Accuracy Relative to Corresponding Xray Crystal Structures

    E-Print Network [OSTI]

    Baker, David

    refinement of protein NMR structures was also compared with restrained CS-Rosetta calculations. For proteins spectroscopy (NMR). While X-ray crystal structures are derived from electron density data and are often dynamics and has the advantage of not requiring crystallization. Solution NMR structure determination

  4. Iterative model-building, structure refinement, and density modification with the PHENIX AutoBuild Wizard

    SciTech Connect (OSTI)

    Los Alamos National Laboratory, Mailstop M888, Los Alamos, NM 87545, USA; Lawrence Berkeley National Laboratory, One Cyclotron Road, Building 64R0121, Berkeley, CA 94720, USA; Department of Haematology, University of Cambridge, Cambridge CB2 0XY, England; Terwilliger, Thomas; Terwilliger, T.C.; Grosse-Kunstleve, Ralf Wilhelm; Afonine, P.V.; Moriarty, N.W.; Zwart, P.H.; Hung, L.-W.; Read, R.J.; Adams, P.D.

    2007-04-29T23:59:59.000Z

    The PHENIX AutoBuild Wizard is a highly automated tool for iterative model-building, structure refinement and density modification using RESOLVE or TEXTAL model-building, RESOLVE statistical density modification, and phenix.refine structure refinement. Recent advances in the AutoBuild Wizard and phenix.refine include automated detection and application of NCS from models as they are built, extensive model completion algorithms, and automated solvent molecule picking. Model completion algorithms in the AutoBuild Wizard include loop-building, crossovers between chains in different models of a structure, and side-chain optimization. The AutoBuild Wizard has been applied to a set of 48 structures at resolutions ranging from 1.1 {angstrom} to 3.2 {angstrom}, resulting in a mean R-factor of 0.24 and a mean free R factor of 0.29. The R-factor of the final model is dependent on the quality of the starting electron density, and relatively independent of resolution.

  5. Iterative model building, structure refinement and density modification with the PHENIX AutoBuild wizard

    SciTech Connect (OSTI)

    Terwilliger, Thomas C., E-mail: terwilliger@lanl.gov [Los Alamos National Laboratory, Mailstop M888, Los Alamos, NM 87545 (United States); Grosse-Kunstleve, Ralf W.; Afonine, Pavel V.; Moriarty, Nigel W.; Zwart, Peter H. [Lawrence Berkeley National Laboratory, One Cyclotron Road, Building 64R0121, Berkeley, CA 94720 (United States); Hung, Li-Wei [Los Alamos National Laboratory, Mailstop M888, Los Alamos, NM 87545 (United States); Read, Randy J. [Department of Haematology, University of Cambridge, Cambridge CB2 0XY (United Kingdom); Adams, Paul D., E-mail: terwilliger@lanl.gov [Lawrence Berkeley National Laboratory, One Cyclotron Road, Building 64R0121, Berkeley, CA 94720 (United States); Los Alamos National Laboratory, Mailstop M888, Los Alamos, NM 87545 (United States)

    2008-01-01T23:59:59.000Z

    The highly automated PHENIX AutoBuild wizard is described. The procedure can be applied equally well to phases derived from isomorphous/anomalous and molecular-replacement methods. The PHENIX AutoBuild wizard is a highly automated tool for iterative model building, structure refinement and density modification using RESOLVE model building, RESOLVE statistical density modification and phenix.refine structure refinement. Recent advances in the AutoBuild wizard and phenix.refine include automated detection and application of NCS from models as they are built, extensive model-completion algorithms and automated solvent-molecule picking. Model-completion algorithms in the AutoBuild wizard include loop building, crossovers between chains in different models of a structure and side-chain optimization. The AutoBuild wizard has been applied to a set of 48 structures at resolutions ranging from 1.1 to 3.2 Å, resulting in a mean R factor of 0.24 and a mean free R factor of 0.29. The R factor of the final model is dependent on the quality of the starting electron density and is relatively independent of resolution.

  6. NWS Product Definition Document (PDD) for: Refinement of SPC Experimental Enhanced Resolution Thunderstorm Outlook

    E-Print Network [OSTI]

    NWS Product Definition Document (PDD) for: Refinement of SPC Experimental Enhanced Resolution replaces an existing PDD, whose evaluation period expired on 15 February 2008, and revises the current SPC will also evaluate changes in the distribution of SPC forecaster workload and the ability to maintain

  7. Most of the world's titanium output is refined into titanium dioxide (TiO2

    E-Print Network [OSTI]

    Torgersen, Christian

    Most of the world's titanium output is refined into titanium dioxide (TiO2 ), which is used to give.S. Geological Survey (USGS) supports science to understand · How and where titanium resources form and concentrate in the Earth's crust · How titanium resources interact with the environment to affect human

  8. Use of Lung Transplantation Survival Models to Refine Patient Selection in Cystic Fibrosis

    E-Print Network [OSTI]

    Adler, Fred

    Use of Lung Transplantation Survival Models to Refine Patient Selection in Cystic Fibrosis Theodore Angeles, California Lung transplantation in cystic fibrosis may improve survival for patients with low 5 and United Network for Organ Sharing data, we identified 845 lung transplant recipients from 1991

  9. Soundness and Separability of Workflow Nets in the Stepwise Refinement Approach

    E-Print Network [OSTI]

    Sidorova, Natalia

    Soundness and Separability of Workflow Nets in the Stepwise Refinement Approach Kees van Hee.sidorova@tue.nl, wsinmarc@win.tue.nl Abstract. Workflow nets are recognized as a modelling paradigm for the business process modelling. We introduce and investigate several cor- rectness notions for workflow nets, ranging from proper

  10. Soundness and Separability of Workflow Nets in the Stepwise Refinement Approach

    E-Print Network [OSTI]

    Sidorova, Natalia

    Soundness and Separability of Workflow Nets in the Stepwise Refinement Approach Kees van Hee.sidorova@tue.nl, wsinmarc@win.tue.nl Abstract. Workflow nets are recognized as a modelling paradigm for the business process modelling. We introduce and investigate several cor­ rectness notions for workflow nets, ranging from proper

  11. A Pareto-Optimal Refinement Method for Protein Design Lucas Gregorio Nivo n1.

    E-Print Network [OSTI]

    Baker, David

    Moretti1. , David Baker1,2 * 1 Department of Biochemistry, University of Washington, Seattle, Washington, United States of America, 2 Howard Hughes Medical Institute (HHMI), University of Washington, Seattle for functional site design. Citation: Nivo´n LG, Moretti R, Baker D (2013) A Pareto-Optimal Refinement Method

  12. Refinement of weed risk assessments for biofuels using Camelina sativa as a model species

    E-Print Network [OSTI]

    Peterson, Robert K. D.

    Refinement of weed risk assessments for biofuels using Camelina sativa as a model species Philip B and Environmental Sciences, Montana State University, PO Box 173120, Bozeman, MT 59717-3120, USA Summary 1. Biofuel. However, concerns have been raised on the invasiveness of biofuel feedstocks. Estimating invasion

  13. Nonrigid Motion Analysis Based on Dynamic Refinement of Finite Element Models

    E-Print Network [OSTI]

    Sarkar, Sudeep

    Nonrigid Motion Analysis Based on Dynamic Refinement of Finite Element Models Leonid V. Tsap finite element models. The method is based on the iterative analysis of the differences betweenÐPhysically-based vision, deformable models, nonrigid motion analysis, biomedical applications, finite element analysis. æ

  14. Environmental Regulations and Changes in Petroleum Refining Operations (Released in the STEO June 1998)

    Reports and Publications (EIA)

    1998-01-01T23:59:59.000Z

    Changes in domestic refining operations are identified and related to the summer Reid vapor pressure (RVP) restrictions and oxygenate blending requirements. This analysis uses published Energy Information Administration survey data and linear regression equations from the Short-Term Integrated Forecasting System (STIFS). The STIFS model is used for producing forecasts appearing in the Short-Term Energy Outlook.

  15. A Characteristic Domain Decomposition and SpaceTime Local Refinement Method for

    E-Print Network [OSTI]

    Sharpley, Robert

    partial differential equations model the reactive transport of solutes in groundwater and surface water with other domain decomposition and local refinement schemes. 1 Introduction First­order linear hyperbolic interfaces that introduce extra difficulties. Physical interfaces arise, for example, in the modeling

  16. A Characteristic Domain Decomposition and SpaceTime Local Refinement Method for

    E-Print Network [OSTI]

    South Carolina, University of

    model the reactive transport of solutes in groundwater and surface water, the movement of aerosols and local refinement schemes. 1 Introduction First­order linear hyperbolic partial differential equations that introduce extra difficulties. Physical interfaces arise, for example, in the modeling of transport processes

  17. A Characteristic Domain Decomposition and Space Time Local Refinement Method for

    E-Print Network [OSTI]

    Sharpley, Robert

    cause severe numerical difficulties [1­5]. Conventional finite difference or finite element methods­Lagrangian methods; linear hyperbolic problems; local refinement techniques I. INTRODUCTION First-order linear hyperbolic partial differential equations model the reactive transport of solutes in groundwater and surface

  18. A Refined Ethical Impact Assessment Tool and a Case Study of its Application

    E-Print Network [OSTI]

    California at San Diego, University of

    A Refined Ethical Impact Assessment Tool and a Case Study of its Application Michael Bailey1 , Erin? What impact does the immediacy of an event (e.g., DDoS) have on our response to the event? [4 understanding, and (iii) retrospectively apply this EIA to an ethically challenging, original study in ICTR. 1

  19. Constraints on anomalous quartic gauge boson couplings from ??bar ?? and qqbar ?? events at CERN LEP2

    E-Print Network [OSTI]

    Wilson, Graham Wallace; Abbiendi, G.; Ainsley, C.; Å kesson, P. F.; Alexander, G.; Allison, J.; Amaral, P.; Anagnostou, G.; Anderson, K. J.; Asai, S.; Axen, D.; Azuelos, G.; Bailey, I.; Barberio, E.

    2004-08-27T23:59:59.000Z

    PHYSICAL REVIEW D 70, 032005 ~2004!Constraints on anomalous quartic gauge boson couplings from nn¯ gg and qq¯gg events at CERN LEP2 G. Abbiendi,2 C. Ainsley,5 P. F. Åkesson,3,v G. Alexander,21 J. Allison,15 P. Amaral,8 G. Anagnostou,1 K. J. Anderson..., the ratio of the observ expectation is R(data/SM)50.9260.0760.04, where tainties respectively. The nn¯gg and qq¯gg data are use couplings. Combining with previous OPAL results fr limits on the anomalous coupling parameters a0 Z , ac Z ,0.023 GeV22, 20.029 Ge...

  20. Mechanical optimisation of a high-precision fast wire scanner at CERN

    E-Print Network [OSTI]

    Samuelsson, Sebastian; Veness, Raymond

    Wire scanners are instruments used to measure the transverse beam prole in particle accelerators by passing a thin wire through the particle beam. To avoid the issues of vacuum leakage through the bellows and wire failure related to current designs of wire scanners, a new concept for a wire scanner has been developed at CERN. This design has all moving parts inside the beam vacuum and has a nominal wire scanning speed of 20 m/s. The demands on the design associated with this together with the high precision requirements create a need for\

  1. Superconducting spoke LINAC design as an alternative option for the CERN LINAC4 high energy part

    E-Print Network [OSTI]

    Sargsyan, E; CERN. Geneva. AB Department

    2006-01-01T23:59:59.000Z

    A standard normal-conducting Side Coupled Linac (SCL) has been chosen as a mainline solution for the CERN LINAC4/SPL to accelerate the beam from 90-160/180 MeV. This type of structure is well known and operates at twice the basic frequency (704.4 MHz). Two alternative superconducting solutions with elliptical and triple-spoke cavities have been studied for this energy range. The present note summarizes the beam dynamics calculations in the superconducting triple-spoke linac section analyzing advantages/disadvantages.

  2. Modified Extraction Scheme for the CERN PS Multi-Turn Extraction

    E-Print Network [OSTI]

    Gilardoni, S; Hernalsteens, C; Lachaize, A; Métral, G

    2012-01-01T23:59:59.000Z

    High-activation of the extraction magnetic septum of the CERN PS machine was observed due to the losses of the continuous beam extracted via the Multi-Turn Extraction (MTE) method. A possible mitigation measure consists of using an existing electrostatic septum, located upstream of the extraction magnetic septum, to deflect the beam. This would highly decrease the beam losses, and hence the induced activation, during the rise time of the MTE kickers due to the reduced thickness of the electrostatic septum with respect to the magnetic one. The layout of this new extraction will be described in detail and the results of beam measurements presented.

  3. Integrating INIS into a high energy physics information environment thoughts from CERN

    E-Print Network [OSTI]

    Yeomans, Joanne; Baudic, Romain; Picchioli, Ingrid; International Conference on Nuclear Knowledge Management : Strategies, Information Management and Human Resource Development. Special Session : The Role of INIS in Knowledge Preservation

    2004-01-01T23:59:59.000Z

    Information searchers from the high energy physics community expect an integrated information environment. The CERN Library offers its print and electronic collections through a combined Web interface and maintains the database by semi-automated processes to upload bibliographic and full-text records. Suggestions are offered by which INIS could develop its own Web interface and better match HEP users’ expectations. These include implementing full-text linking, increasing currency, expanding search and display functions and developing the richness of the data. Links with the National Nuclear Data Center and Crossref could also increase its visibility.

  4. Microwave Schottky diagnostic systems for the Fermilab Tevatron, Recycler, and CERN LHC

    SciTech Connect (OSTI)

    Pasquinelli, Ralph J.; /Fermilab; Jansson, Andreas; /ESS, Lund

    2011-02-01T23:59:59.000Z

    A means for non-invasive measurement of transverse and longitudinal characteristics of bunched beams in synchrotrons has been developed based on high sensitivity slotted waveguide pickups. The pickups allow for bandwidths exceeding hundreds of MHz while maintaining good beam sensitivity characteristics. Wide bandwidth is essential to allow bunch-by-bunch measurements by means of a fast gating system. The Schottky detector system is installed and successfully commissioned in the Fermilab Tevatron and Recycler and CERN LHC synchrotrons. Measurement capabilities include tune, chromaticity, and momentum spread of single or multiple beam bunches in any combination. With appropriate calibrations, emittance can also be measured by integrating the area under the incoherent tune sidebands.

  5. The Use of Re-Refined Oil in Vehicle Fleets Copyright 1996 Society of Automotive Engineers, Inc.

    E-Print Network [OSTI]

    Timothy T. Maxwell; Glen Hagler; Jesse C. Jones; Raghu Narayan; Atila Ertas

    A literature search to identify deleterious effects of using re-refined oil did not disclose any validated occurrences. Significant engine testing using re-refined lubricating oil is reported and no cases were discovered in which engine operation was affected negatively by the use of re-refined oil. The American Petroleum Institute (AFT) allows the use of re-refined base stock oils in the blending of end use lubricants. Based on oil sample testing performed in this research as well as other authoritative sources, it was determined that no significant chemical or physical differences exist between rerefined and virgin oils. Differences noted in this research were related to higher levels of polynuclear aromatics (PNA’s) in the re-refined oil. PNA’s

  6. New vertical cryostat for the high field superconducting magnet test station at CERN

    SciTech Connect (OSTI)

    Vande Craen, A.; Atieh, S.; Bajko, M.; Benda, V.; Rijk, G. de; Favre, G.; Giloux, C.; Minginette, P.; Parma, V.; Perret, P.; Pirotte, O.; Ramos, D.; Viret, P. [CERN European Organization for Nuclear Research, Meyrin 1211, Geneva 23, CH (Switzerland); Hanzelka, P. [Institute of Scientific Instruments of the ASCR, Kralovopolska 147, 612 64 Brno, CZ (Czech Republic)

    2014-01-29T23:59:59.000Z

    In the framework of the R and D program for new superconducting magnets for the Large Hadron Collider accelerator upgrades, CERN is building a new vertical test station to test high field superconducting magnets of unprecedented large size. This facility will allow testing of magnets by vertical insertion in a pressurized liquid helium bath, cooled to a controlled temperature between 4.2 K and 1.9 K. The dimensions of the cryostat will allow testing magnets of up to 2.5 m in length with a maximum diameter of 1.5 m and a mass of 15 tons. To allow for a faster insertion and removal of the magnets and reducing the risk of helium leaks, all cryogenics supply lines are foreseen to remain permanently connected to the cryostat. A specifically designed 100 W heat exchanger is integrated in the cryostat helium vessel for a controlled cooling of the magnet from 4.2 K down to 1.9 K in a 3 m{sup 3} helium bath. This paper describes the cryostat and its main functions, focusing on features specifically developed for this project. The status of the construction and the plans for assembly and installation at CERN are also presented.

  7. Proposal for the award of an industrial support contract for minor metalwork, metal fittings, cladding and roofing at CERN

    E-Print Network [OSTI]

    2006-01-01T23:59:59.000Z

    This document concerns the award of a contract for minor metalwork, metal fittings, cladding and roofing at CERN. The Finance Committee is invited to agree to the negotiation of a contract with the firm INIZIATIVE INDUSTRIALI SRL (IT), the lowest bidder, for the provision of minor metalwork, metal fittings, cladding and roofing at CERN for three years for a total amount not exceeding 1 467 895 euros (2 258 301 Swiss francs), not subject to revision for two years. The contract will include options for two one-year extensions beyond the initial three-year period.

  8. Summary of the 2-day internal review of LHC performance limitations (linked to transverse collective effects) during run I (CERN, 25-26/09/2013)

    E-Print Network [OSTI]

    Metral, E; Banfi, D; Barranco, J; Bartosik, H; Buffat, X; Bruning, O; Fartoukh, S; Herr, W; Hofle, W; Iadarola, G; Kuhn, M; Li, K; Mounet, N; Pieloni, T; Rumolo, G; Salvachua Ferrando, B; Zimmermann, F; Burov, A; White, S

    2014-01-01T23:59:59.000Z

    In this note the 2-day internal review of LHC performance limitations (linked to transverse collective effects) during run I, which took place at CERN on 25-26/09/2013 (https://indico.cern.ch/conferenceDisplay.py?confId=267783), is summarised and the next steps to prepare the machine set-up in 2015 are discussed.

  9. Preliminary assessment of future refining impacts of the Clean Air Act Amendments of 1990

    SciTech Connect (OSTI)

    Hadder, G.R.

    1991-09-01T23:59:59.000Z

    A preliminary assessment of the future refining impacts of the Clean Air Act Amendments of 1990 has been performed with the Navy Mobility Fuels Forecasting Systems. The assessment suggests that gasoline reformulation costs in domestic coastal and near-coastal refining regions in the year 2000 could be 3.5 to 5.6 cents per gallon (in terms of 1989 currency). For heating value equivalent to one gallon of conventional gasoline, the regional total added costs (including reformulation costs) for reformulated gasoline could be 5.9 to 8.0 cents. In blending reformulated gasolines, the reduction of butane for lower Reid vapor pressure and the reduction of reformate for lower aromatics are generally compensated by increased percentages of alkylate and/or straight run naphthas. Relatively larger refinery process capacity additions are required for butane isomerization, alkylation, aromatics recovery, and distillate hydrotreating. 21 refs., 3 figs., 18 tabs.

  10. Hydrodynamical adaptive mesh refinement simulations of turbulent flows - I. Substructure in a wind

    E-Print Network [OSTI]

    Iapichino, L; Schmidt, W; Niemeyer, J C

    2008-01-01T23:59:59.000Z

    The problem of the resolution of turbulent flows in adaptive mesh refinement (AMR) simulations is investigated by means of 3D hydrodynamical simulations in an idealised setup, representing a moving subcluster during a merger event. AMR simulations performed with the usual refinement criteria based on local gradients of selected variables do not properly resolve the production of turbulence downstream of the cluster. Therefore we apply novel AMR criteria which are optimised to follow the evolution of a turbulent flow. We demonstrate that these criteria provide a better resolution of the flow past the subcluster, allowing us to follow the onset of the shear instability, the evolution of the turbulent wake and the subsequent back-reaction on the subcluster core morphology. We discuss some implications for the modelling of cluster cold fronts.

  11. Hydrodynamical adaptive mesh refinement simulations of turbulent flows - I. Substructure in a wind

    E-Print Network [OSTI]

    L. Iapichino; J. Adamek; W. Schmidt; J. C. Niemeyer

    2008-07-01T23:59:59.000Z

    The problem of the resolution of turbulent flows in adaptive mesh refinement (AMR) simulations is investigated by means of 3D hydrodynamical simulations in an idealised setup, representing a moving subcluster during a merger event. AMR simulations performed with the usual refinement criteria based on local gradients of selected variables do not properly resolve the production of turbulence downstream of the cluster. Therefore we apply novel AMR criteria which are optimised to follow the evolution of a turbulent flow. We demonstrate that these criteria provide a better resolution of the flow past the subcluster, allowing us to follow the onset of the shear instability, the evolution of the turbulent wake and the subsequent back-reaction on the subcluster core morphology. We discuss some implications for the modelling of cluster cold fronts.

  12. Iterative-build OMIT maps: map improvement by iterative model building and refinement without model bias

    SciTech Connect (OSTI)

    Terwilliger, Thomas C., E-mail: terwilliger@lanl.gov [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Grosse-Kunstleve, Ralf W.; Afonine, Pavel V.; Moriarty, Nigel W.; Adams, Paul D. [Lawrence Berkeley National Laboratory, One Cyclotron Road, Building 64R0121, Berkeley, CA 94720 (United States); Read, Randy J. [Department of Haematology, University of Cambridge, Cambridge CB2 0XY (United Kingdom); Zwart, Peter H. [Lawrence Berkeley National Laboratory, One Cyclotron Road, Building 64R0121, Berkeley, CA 94720 (United States); Hung, Li-Wei [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

    2008-05-01T23:59:59.000Z

    An OMIT procedure is presented that has the benefits of iterative model building density modification and refinement yet is essentially unbiased by the atomic model that is built. A procedure for carrying out iterative model building, density modification and refinement is presented in which the density in an OMIT region is essentially unbiased by an atomic model. Density from a set of overlapping OMIT regions can be combined to create a composite ‘iterative-build’ OMIT map that is everywhere unbiased by an atomic model but also everywhere benefiting from the model-based information present elsewhere in the unit cell. The procedure may have applications in the validation of specific features in atomic models as well as in overall model validation. The procedure is demonstrated with a molecular-replacement structure and with an experimentally phased structure and a variation on the method is demonstrated by removing model bias from a structure from the Protein Data Bank.

  13. Re-refining of Waste Oil Solvent Is Used in Treatment/Distillation Process

    E-Print Network [OSTI]

    unknown authors

    INDUSTRIAL APPLICATION. A combination solvent treatment/distillation process has been designed for re-refining industrial waste oil (such as equipment lubricants, metal-working oil, and process oil) and used automotive lubricants (engine oil, hydraulic oil, and gear oil) for reuse. WASTE ENERGY RECOVERY. Recycling of waste oil in the United States has the potential to save the energy equivalent of 7-12 million bbl of crude oil annually.1 WASTE OIL RECOVERY. Prior to 1960, a significant portion of the demand for automotive lubricating oil was met by re-relined used oil. At the time, 150 re-refineries produced 300 million gal of motor oil annually. Since 1960, however, the production of re-refined oil has steadily declined. In 1981, for example, out of about 1.2 billion gal of automobile lubricating oil and 1.6 billion gal of industrial lubricating oils purchased, 25 U.S. rerefineries

  14. Characterization of U-6Nb ingots produced via the electron beam cold hearth refining process

    SciTech Connect (OSTI)

    McKoon, R.H.

    1997-11-14T23:59:59.000Z

    A study was undertaken at Lawrence Livermore National Laboratory to characterize uranium, 6% niobium ingots produced via electron beam melting, hearth refining and continuous casting and to compare this material with conventional VIM/skull melt/VAR material. Samples of both the ingot and feed material were analyzed for niobium and trace metallic elements, carbon, oxygen and nitrogen. This material was also inspected metallographically and via microprobe analysis.

  15. Liquid-liquid extraction as the means of refining cottonseed oil

    E-Print Network [OSTI]

    Patel, Manubhai Chunibhai

    1956-01-01T23:59:59.000Z

    Cottonseed oil, as well as other vegetable oils, contain a number of non-triglyceride impurities, Jamieson and Baughman (1) report tne following in crude cottonseed oil: raffinose, pentosans& resins, protoses& peptcnes, phosphatides& eterols, phytosterols... in the crude oil& combines with or destroys phospho-lipids and other minor constituents and removes suspended foreign matter. These materials which have been rendered insoluble can be separated from the refined oil by settling or centrifugation...

  16. ,"U.S. Residual Fuel Oil Refiner Sales Volumes"

    U.S. Energy Information Administration (EIA) 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National and Regional Data; Row: NAICS Codes; Column: Energy SourcesRefinery, Bulk Terminal, and Natural Gas Plant Stocks of SelectedRefiner

  17. Improved crystallographic models through iterated local density-guided model deformation and reciprocal-space refinement

    SciTech Connect (OSTI)

    Terwilliger, Thomas C., E-mail: terwilliger@lanl.gov [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Read, Randy J. [University of Cambridge, Cambridge CB2 0XY (United Kingdom); Adams, Paul D. [Lawrence Berkeley National Laboratory, One Cyclotron Road, Building 64R0121, Berkeley, CA 94720 (United States); Brunger, Axel T. [Stanford University, 318 Campus Drive West, Stanford, CA 94305-5432 (United States); Afonine, Pavel V.; Grosse-Kunstleve, Ralf W. [Lawrence Berkeley National Laboratory, One Cyclotron Road, Building 64R0121, Berkeley, CA 94720 (United States); Hung, Li-Wei [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

    2012-07-01T23:59:59.000Z

    A density-based procedure is described for improving a homology model that is locally accurate but differs globally. The model is deformed to match the map and refined, yielding an improved starting point for density modification and further model-building. An approach is presented for addressing the challenge of model rebuilding after molecular replacement in cases where the placed template is very different from the structure to be determined. The approach takes advantage of the observation that a template and target structure may have local structures that can be superimposed much more closely than can their complete structures. A density-guided procedure for deformation of a properly placed template is introduced. A shift in the coordinates of each residue in the structure is calculated based on optimizing the match of model density within a 6 Å radius of the center of that residue with a prime-and-switch electron-density map. The shifts are smoothed and applied to the atoms in each residue, leading to local deformation of the template that improves the match of map and model. The model is then refined to improve the geometry and the fit of model to the structure-factor data. A new map is then calculated and the process is repeated until convergence. The procedure can extend the routine applicability of automated molecular replacement, model building and refinement to search models with over 2 Å r.m.s.d. representing 65–100% of the structure.

  18. Constrained-Transport Magnetohydrodynamics with Adaptive-Mesh-Refinement in CHARM

    SciTech Connect (OSTI)

    Miniatii, Francesco; Martin, Daniel

    2011-05-24T23:59:59.000Z

    We present the implementation of a three-dimensional, second order accurate Godunov-type algorithm for magneto-hydrodynamic (MHD), in the adaptivemesh-refinement (AMR) cosmological code CHARM. The algorithm is based on the full 12-solve spatially unsplit Corner-Transport-Upwind (CTU) scheme. Thefluid quantities are cell-centered and are updated using the Piecewise-Parabolic- Method (PPM), while the magnetic field variables are face-centered and areevolved through application of the Stokes theorem on cell edges via a Constrained- Transport (CT) method. The so-called ?multidimensional MHD source terms?required in the predictor step for high-order accuracy are applied in a simplified form which reduces their complexity in three dimensions without loss of accuracyor robustness. The algorithm is implemented on an AMR framework which requires specific synchronization steps across refinement levels. These includeface-centered restriction and prolongation operations and a reflux-curl operation, which maintains a solenoidal magnetic field across refinement boundaries. Thecode is tested against a large suite of test problems, including convergence tests in smooth flows, shock-tube tests, classical two- and three-dimensional MHD tests,a three-dimensional shock-cloud interaction problem and the formation of a cluster of galaxies in a fully cosmological context. The magnetic field divergence isshown to remain negligible throughout. Subject headings: cosmology: theory - methods: numerical

  19. Rietveld Refinement

    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:Energy: Grid Integration Redefining What's PossibleRadiation Protection TechnicalResonantNovember 15 to March 15A Megawatt is

  20. An ultra low-noise AC beam transformer and digital signal processing system for CERN's ELENA ring

    E-Print Network [OSTI]

    Angoletta, M E; Caspers, F; Federmann, S; Molendijk, J; Pedersen, F; Sanchez-Quesada, J

    2013-01-01T23:59:59.000Z

    CERN’s Extra Low ENergy Antiproton (ELENA) ring is a new synchrotron that will be commissioned in 2016 to further decelerate the antiprotons coming from CERN’s Antiproton Decelerator (AD). Essential longitudinal diagnostics required for commissioning and operation include the intensity measurement for bunched and debunched beams and the measurement of p/p for debunched beams to assess the electron cooling performance. The beam phase information is also needed by the Low-Level RF (LLRF) system. The baseline system for providing the required beam parameters and signals is based upon two ultra-low-noise AC beam transformers and associated digital signal processing. The AC beam transformers cover different frequency regions and are an adaptation to the ELENA layout of those used in the AD. Two AC beam transformers will also be installed in the extraction lines to provide beam intensity measurements. The digital signal processing will be carried out with the leadingedge hardware family used for ELENA’s L...

  1. Design and implementation of a Client-Server System for Acquiring Beam Intensity Data from High Energy Accelerators at CERN

    E-Print Network [OSTI]

    Topaloudis, A; Bellas, N; Jensen, L

    The world’s largest research center in the domain of High Energy Physics (HEP) is the European Organization for Nuclear Research (CERN) whose main goal is to accelerate particles through a sequence of accelerators – accelerator complex – and bring them into collision in order to study the fundamental elements of matter and the forces acting between them. For controlling the accelerator complex, CERN needs several diagnostic tools to provide information about the beam’s attributes and one such system is the Fast Beam Current Transformer (FBCT) measuring system that provides bunch-by-bunch and total beam intensity information. The current hardware and firmware of the FBCT system has certain issues and lacks diagnostics as a lot of the calculations are done in an FPGA. In order to improve on this, the firmware was redesigned and simplified in order to increase its capabilities and provide the base of a unified FBCT measuring system that could be installed in several of CERN’s accelerator complex’s pa...

  2. The CERN Resonant Weakly Interacting Sub-eV Particle Search (CROWS)

    E-Print Network [OSTI]

    Betz, Michael; Gasior, Marek; Thumm, Manfred

    The subject of this thesis is the design, implementation and first results of the ``CERN Resonant WISP Search'' (CROWS) experiment, which probes the existence of Weakly Interacting Sub-eV Particles (WISPs) using microwave techniques. Axion Like Particles and Hidden Sector Photons are two well motivated members of the WISP family. Their existence could reveal the composition of cold dark matter in the universe and explain a large number of astrophysical phenomena. Particularly, the discovery of an axion would solve a long standing issue in the standard model, known as the ``strong CP problem''. Despite their strong theoretical motivation, the hypothetical particles have not been observed in any experiment so far. One way to probe the existence of WISPs is to exploit their interaction with photons in a ``light shining through the wall'' experiment. A laser beam is guided through a strong magnetic field in the ``emitting region'' of the experiment. This provides photons, which can convert into hypothetical Axi...

  3. Thermal Dimuon Emission in In-In at the CERN SPS

    E-Print Network [OSTI]

    M. Floris; for the NA60 collaboration

    2008-06-03T23:59:59.000Z

    The NA60 experiment at the CERN SPS has studied low-mass dimuon production in 158A GeV In-In collisions. A significant excess of pairs is observed above the yield expected from neutral meson decays, consistent with a dominant contribution from $\\pi\\pi\\to\\rho\\to\\mu\\mu$. This paper presents precision results on the mass and transverse momentum spectra of the excess pairs. The space-time averaged rho spectral function associated to the measured mass distribution shows a significant broadening, but essentially no mass shift. The slope parameter $T_{eff}$ extracted from the spectra rises with dimuon mass up to the $\\rho$, followed by a sudden decline above. While the initial rise is consistent with the expectations for radial flow of a hadronic decay source, the decline indicates a transition to an emission source with much smaller flow, possibly of partonic origin.

  4. Amorphous carbon coatings for the mitigation of electron cloud in the CERN Super Proton Synchrotron

    E-Print Network [OSTI]

    Yin Vallgren, C; Bauche, J; Calatroni, S; Chiggiato, P; Cornelis, K; Costa Pinto, P; Henrist, B; Metral, E; Neupert, H; Rumolo, G; Shaposhnikova, E; Taborelli, M

    2011-01-01T23:59:59.000Z

    Electron cloud buildup is a major limitation for high-energy particle accelerators such as the CERN Super Proton Synchrotron (SPS). Amorphous carbon thin films with low initial secondary electron yield (SEY ~ 1.0) have been applied as a mitigation material in the SPS vacuum chambers. This paper summarizes the experimental setups for electron cloud monitoring, coating procedures, and recent measurements performed with amorphous carbon coated vacuum chambers in the SPS. The electron cloud measured by dedicated monitors is completely suppressed for LHC-type beams. Even after more than one year’s exposure in the SPS with the machine in operation, the coating does not show any increase in the secondary electron yield. The study of coated vacuum chambers for the SPS dipole magnets is in progress; the correlation between electron cloud reduction and pressure rises is not yet fully understood. Some prototypes have already been installed in the accelerator and plans for the implementation of an optimized coating tec...

  5. Measurements of electron cloud density in the CERN Super Proton Synchrotron with the microwave transmission method

    E-Print Network [OSTI]

    Federmann, S; Mahner, E

    2011-01-01T23:59:59.000Z

    The electron cloud effect can pose severe performance limitations in high-energy particle accelerators as the CERN Super Proton Synchrotron (SPS). Mitigation techniques such as vacuum chamber thin film coatings with low secondary electron yields (SEY < 1.3) aim to reduce or even suppress this effect. The microwave transmission method, developed and first applied in 2003 at the SPS, measures the integrated electron cloud density over a long section of an accelerator. This paper summarizes the theory and measurement principle and describes the new SPS microwave transmission setup used to study the electron cloud mitigation of amorphous carbon coated SPS dipole vacuum chambers. Comparative results of carbon coated and bare stainless steel dipole vacuum chambers are given for the beam with nominal LHC 25 ns bunch-to-bunch spacing in the SPS and the electron cloud density is derived.

  6. Beam-Wall Interaction in the CERN Proton Synchrotron for LHC Upgrade

    E-Print Network [OSTI]

    Migliorati, M; Gilardoni, S; Hancock, S; Palumbo, L; Persichelli, S

    2013-01-01T23:59:59.000Z

    Coupling impedances and wakefields are fundamental quantities to characterize the electromagnetic interaction of a particle beam with the surrounding environment. In particular, collective effects, triggered by these self-induced fields, may play an important role in beam stability and machine performance. Within the framework of the LHC Injectors Upgrade project, since a significantly higher beam intensity is planned for the CERN Proton Synchrotron (PS), wakefields are expected to increase their influence on the beam dynamics, and their evaluation is becoming important. In this paper we present the results of recent measurements of the longitudinal broadband coupling impedance by means of incoherent quadrupole synchrotron frequency shift as a function of beam intensity. A detailed evaluation of the contribution of several machine installations to the total impedance budget is also presented and compared with the measurements.

  7. Prospects for the CERN Axion Solar Telescope Sensitivity to 14.4 keV Axions

    E-Print Network [OSTI]

    Kresimir Jakovcic; for the CAST Collaboration

    2006-11-15T23:59:59.000Z

    The CERN Axion Solar Telescope (CAST) is searching for solar axions using the 9.0 T strong and 9.26 m long transverse magnetic field of a twin aperture LHC test magnet, where axions could be converted into X-rays via reverse Primakoff process. Here we explore the potential of CAST to search for 14.4 keV axions that could be emitted from the Sun in M1 nuclear transition between the first, thermally excited state, and the ground state of 57Fe nuclide. Calculations of the expected signals, with respect to the axion-photon coupling, axion-nucleon coupling and axion mass, are presented in comparison with the experimental sensitivity.

  8. Commissioning of the First Klystron-Based X-Band Power Source at CERN

    E-Print Network [OSTI]

    Kovermann, J; Curt, S; Doebert, S; Naon, M; McMonagle, G; Paju, E; Rey, S; Riddone, G; Schirm, K; Syratchev, I; Timeo, L; Wuensch, W; Hamdi, A; Peauger, FF; Eichner, J; Haase, A; Sprehn, D

    2012-01-01T23:59:59.000Z

    A new klystron based X-band rf power source operating at 11.994 GHz has been installed and started to be commissioned at CERN in collaboration with CEA Saclay and SLAC for CLIC accelerating structure tests. The system comprises a solid state high voltage modulator, an XL5 klystron developed by SLAC, a cavity based SLED type pulse compressor, the necessary low level rf system including rf diagnostics and interlocks and the surrounding vacuum, cooling and controls infrastructure. The system is designed to produce up to 50 MW rf pulses of 1500 ns pulse width and 50 Hz repetition rate. After pulse compression, up to 100 MW of rf power at 250 ns pulse width will be available in the structure test bunker. This paper describes in more detail this setup and the process of commissioning which is necessary to arrive at the design performance.

  9. The influence of Earth rotation in neutrino speed measurements between CERN and the OPERA detector

    E-Print Network [OSTI]

    Markus G. Kuhn

    2011-10-20T23:59:59.000Z

    The OPERA neutrino experiment at the underground Gran Sasso Laboratory recently reported, in arXiv:1109.4897v1, high-accuracy velocity measurements of neutrinos from the CERN CNGS beam over the 730 km distance between the two laboratories. This raised significant interest, as the observed neutrinos appeared to arrive at the OPERA detector about 60 ns (or equivalently 18 m) earlier than would have been expected if they had traveled at the speed of light, with high statistical significance. As the authors did not indicate whether and how they took into account the Coriolis or Sagnac effect that Earth's rotation has on the (southeastwards traveling) neutrinos, this brief note quantifies this effect. It would explain a 2.2 ns later arrival time.

  10. Bringing Automated Model Checking to PLC Program Development - A CERN Case Study

    E-Print Network [OSTI]

    Fernandez Adiego, B; Tournier, J-C; Blanco Vinuela, E; Gonzalez Suarez, V M

    2014-01-01T23:59:59.000Z

    Verification of critical software is a high priority but a challenging task for industrial control systems. Model checking appears to be an appropriate approach for this purpose. However, this technique is not widely used in industry yet, due to some obstacles. The main obstacles encountered when trying to apply formal verification techniques at industrial installations are the difficulty of creating models out of PLC programs and defining formally the specification requirements. In addition, models produced out of real-life programs have a huge state space, thus preventing the verification due to performance issues. Our work at CERN (European Organization for Nuclear Research) focuses on developing efficient automatic verification methods for industrial critical installations based on PLC (Programmable Logic Controller) control systems. In this paper, we present a tool generating automatically formal models out of PLC code. The tool implements a general methodology which can support several input languages, ...

  11. Single photons from Pb+Pb collisions at CERN SPS, QGP vs. hadronic gas

    E-Print Network [OSTI]

    A. K. Chaudhuri

    2001-12-10T23:59:59.000Z

    In a hydrodynamic model, we have analysed the direct photon data obtained by the WA98 collaboration in 158 A GeV Pb+Pb collisions at CERN SPS. The transverse expansion of the system was taken into account. Two scenarios (i) formation of quark-gluon plasma and (ii) formation of hot hadronic gas were considered. Equally well description to the data were obtained in both the scenarios. However, hadronic gas scenario require very high initial temperature ($\\sim$ 300 MeV) and it is difficult to conceive existence of hadron gas at that high temperature. If the hadronic fluid has small radial velocity (0.2c-0.3c) initially, the data are well explained in the hadronic gas scenario with reasonable initial temperatures.

  12. Lepton-flavor-violating decay {tau}{yields}{mu}{mu}{mu} at the CERN LHC

    SciTech Connect (OSTI)

    Giffels, M.; Stahl, A. [III. Physikalisches Institut, RWTH Aachen, 52056 Aachen (Germany); Kallarackal, J. [Institut fuer Theoretische Physik, RWTH Aachen, 52074 Aachen (Germany); Institut fuer Physik, Humboldt-Universitaet zu Berlin, 12489 Berlin (Germany); Kraemer, M.; O'Leary, B. [Institut fuer Theoretische Physik, RWTH Aachen, 52074 Aachen (Germany)

    2008-04-01T23:59:59.000Z

    Lepton-flavor-violating {tau} decays are predicted in many extensions of the standard model at a rate observable at future collider experiments. In this article we focus on the decay {tau}{yields}{mu}{mu}{mu}, which is a promising channel to observe lepton-flavor violation at the CERN Large Hadron Collider (LHC). We present analytic expressions for the differential decay width derived from a model-independent effective Lagrangian with general four-fermion operators, and estimate the experimental acceptance for detecting the decay {tau}{yields}{mu}{mu}{mu} at the LHC. Specific emphasis is given to decay angular distributions and how they can be used to discriminate new physics models. We provide specific predictions for various extensions of the standard model, including supersymmetric, little Higgs, and technicolor models.

  13. TAO, Vol. 16, No. 2, 331-343, June 2005 A Refined Historical Record of Volcanic Eruptions around Taiwan

    E-Print Network [OSTI]

    Lin, Andrew Tien-Shun

    . 2. RESULTS Five historical submarine eruptions around offshore Taiwan have been reported (Simkin in the Volcanoes of the World (Simkin and Siebert 1994). The refined results of five historical records around

  14. Air-Con International: Noncompliance Determination and Proposed...

    Energy Savers [EERE]

    Notice of Noncompliance Determination to Air-Con International finding that a variety of central air conditioners and air conditioning heat pumps distributed under the Air-Con...

  15. Numerical relativity simulations of neutron star merger remnants using conservative mesh refinement

    E-Print Network [OSTI]

    Tim Dietrich; Sebastiano Bernuzzi; Maximiliano Ujevic; Bernd Bruegmann

    2015-04-06T23:59:59.000Z

    We study equal and unequal-mass neutron star mergers by means of new numerical relativity simulations in which the general relativistic hydrodynamics solver employs an algorithm that guarantees mass conservation across the refinement levels of the computational mesh. We consider eight binary configurations with total mass $M=2.7\\,M_\\odot$, mass-ratios $q=1$ and $q=1.16$, and four different equation of states (EOSs), and one configuration with a stiff EOS, $M=2.5M_\\odot$ and $q=1.5$. We focus on the post-merger dynamics and study the merger remnant, dynamical ejecta and the postmerger gravitational wave spectrum. Although most of the merger remnants form a hypermassive neutron star collapsing to a black hole+disk system on dynamical timescales, stiff EOSs can eventually produce a stable massive neutron star. Ejecta are mostly emitted around the orbital plane; favored by large mass ratios and softer EOS. The postmerger wave spectrum is mainly characterized by non-axisymmetric oscillations of the remnant. The stiff EOS configuration consisting of a $1.5M_\\odot$ and a $1.0M_\\odot$ neutron star shows a rather peculiar dynamics. During merger the companion star is very deformed; about~$\\sim0.03M_\\odot$ of rest-mass becomes unbound from the tidal tail due torque; and the merger remnant forms stable neutron star surrounded by a massive accretion disk $\\sim0.3M_\\odot$. Similar configurations might be particularly interesting for electromagnetic counterparts. Comparing results obtained with and without the conservative mesh refinement algorithm, we find that post-merger simulations can be affected by systematic errors if mass conservation is not enforced in the mesh refinement strategy. However, mass conservation also depends on grid details and on the artificial atmosphere setup. [abridged

  16. Ensemble refinement shows conformational flexibility in crystal structures of human complement factor D

    SciTech Connect (OSTI)

    Forneris, Federico; Burnley, B. Tom; Gros, Piet, E-mail: p.gros@uu.nl [Utrecht University, Padualaan 8, 3584 CH Utrecht (Netherlands)

    2014-03-01T23:59:59.000Z

    Ensemble-refinement analysis of native and mutant factor D (FD) crystal structures indicates a dynamical transition in FD from a self-inhibited inactive conformation to a substrate-bound active conformation that is reminiscent of the allostery in thrombin. Comparison with previously observed dynamics in thrombin using NMR data supports the crystallographic ensembles. Human factor D (FD) is a self-inhibited thrombin-like serine proteinase that is critical for amplification of the complement immune response. FD is activated by its substrate through interactions outside the active site. The substrate-binding, or ‘exosite’, region displays a well defined and rigid conformation in FD. In contrast, remarkable flexibility is observed in thrombin and related proteinases, in which Na{sup +} and ligand binding is implied in allosteric regulation of enzymatic activity through protein dynamics. Here, ensemble refinement (ER) of FD and thrombin crystal structures is used to evaluate structure and dynamics simultaneously. A comparison with previously published NMR data for thrombin supports the ER analysis. The R202A FD variant has enhanced activity towards artificial peptides and simultaneously displays active and inactive conformations of the active site. ER revealed pronounced disorder in the exosite loops for this FD variant, reminiscent of thrombin in the absence of the stabilizing Na{sup +} ion. These data indicate that FD exhibits conformational dynamics like thrombin, but unlike in thrombin a mechanism has evolved in FD that locks the unbound native state into an ordered inactive conformation via the self-inhibitory loop. Thus, ensemble refinement of X-ray crystal structures may represent an approach alternative to spectroscopy to explore protein dynamics in atomic detail.

  17. Direct Reduction of Waste through Refining of DOE Metal Assets - 13632

    SciTech Connect (OSTI)

    Hargett, Michael C.; Terekhov, Dimitri; Khozan, Kamran M. [Chemical Vapour Metal Refining - CVMR (United States)] [Chemical Vapour Metal Refining - CVMR (United States)

    2013-07-01T23:59:59.000Z

    CVMR{sup R} presents a technology for refining nickel from the enrichment barrier materials of the DOE that is proven through 100 years of use by the metals industry. CVMR{sup R} applies modern controls, instrumentation for process and monitoring of the system, and innovative production methods to produce a wide spectrum of products that generate new technology applications and improvements to our society and economy. CVMR{sup R} will receive barrier materials as a secure operation and size reduce the metal to a shred that is fed to a carbonylation reactor where nickel is reacted with carbon monoxide and generate nickel carbonyl. The carbonyl will be filtered and decomposed with heat to form a variety of products that include high value nano powders, coated substrates, net shapes and pure nickel. The residue from the reactor will retain radionuclides from enrichment activities. The carbon monoxide will only react and extract nickel under the operating conditions to leave volumetric contamination in the unreacted residue. A demonstration plant was designed and built by CVMR{sup R} and operated by BWXT, to demonstrate the systems capabilities to DOE in 2006. A pilot plant operation precedes the detailed design of the nickel refinery and provides essential data for design, safe work practices, waste characterizations and system kinetics and confirms the project feasibility. CVMR{sup R} produces nickel products that are cleaner than the nickel in U.S. commerce and used by industry today. The CVMR{sup R} process and systems for nickel refining is well suited for DOE materials and will provide value through environmental stewardship, recovery of high value assets, and support of the DOE environmental remediation programs as the refined nickel generates additional long term benefits to local communities. (authors)

  18. LA MAESTRA EN CIENCIAS (NEUROBIOLOGA), Con el objetivo de formar profesionales con conocimientos slidos de los

    E-Print Network [OSTI]

    Islas, León

    LA MAESTRÍA EN CIENCIAS (NEUROBIOLOGÍA), Con el objetivo de formar profesionales con conocimientos, neurociencias, psicobiología, física, matemáticas, estadística y metodología de la ciencia, a presentar su Nacional de Posgrado de Calidad del Consejo Nacional de Ciencia y Tecnología en categoría: COMPETENTE

  19. Progress toward uranium scrap recycling via electron beam cold hearth refining

    SciTech Connect (OSTI)

    McKoon, R.H.

    1994-12-15T23:59:59.000Z

    A 250 kW electron beam cold hearth refining (EBCHR) melt furnace at Lawrence Livermore National Laboratory (LLNL) has been in operation for over a year producing 5.5 in.-diameter ingots of various uranium alloys. Production of in-specification uranium-6%-niobium (U-6Nb) alloy ingots has been demonstrated using Virgin feedstock. A vibratory scrap feeder has been installed on the system and the ability to recycle chopped U-6Nb scrap has been established. A preliminary comparison of vacuum arc remelted (VAR) and electron beam (EB) melted product is presented.

  20. Progress toward uranium scrap recycling via Electron Cold Hearth Refining (EBCHR)

    SciTech Connect (OSTI)

    McKoon, R.H.

    1994-12-22T23:59:59.000Z

    A 250 kW electron beam cold hearth refining (EBCHR) melt furnace at Lawrence Livermore National Laboratory (LLNL) has been in operation for over a year producing 5.5 in.-diameter ingots of various uranium alloys. Production of in-specification uranium-6% - niobium (U-6Nb) alloy ingots has been demonstrated using virgin feedstock. A vibratory scrap feeder has been installed on the system and the ability to recycle chopped U-6Nb scrap has been established. A preliminary comparison of vacuum arc remelted (VAR) and electron beam (EB) melted product is presented.

  1. Progress toward uranium scrap recycling via electron beam cold hearth refining

    SciTech Connect (OSTI)

    McKoon, R.H. [Lawrence Livermore National Lab., CA (United States)

    1994-12-31T23:59:59.000Z

    A 250 kW electron beam cold hearth refining (EBCHR) melt furnace at Lawrence Livermore National Laboratory (LLNL) has been in operation for over a year producing 5.5 in.-diameter ingots of various uranium alloys. Production of in-specification uranium 6% niobium (U-6Nb) alloy ingots has been demonstrated using virgin feedstock. A vibratory scrap feeder has been installed on the system and the ability to recycle chopped U-6Nb scrap has been established. A preliminary comparison of vacuum arc remelted (VAR) and electron beam (EB) melted product is presented.

  2. A study of acid sludge obtained in the refining of petroleum

    E-Print Network [OSTI]

    Johnson, Albert Sidney

    1923-01-01T23:59:59.000Z

    fo. petroleum Refin- eries {S l yellow colo of petroleum after ref in&ng m:y be due to impurities in the sulphurio &icid used ~ Since it is known that nitro. ?en trioxide, nitro en pentoxide, and selenium dioxide will cayuse discolor ~tion... of the sludge with ocustio soda o soda ash, &nd the "mixing" of the neutrul- ised sludge eith fuel oil. Much i&ttentlon h s been:i eu t:& the recover" of tho sludge acid, i. nd but little cr no uttention to thc study of the orgunic c&ntent of the caid sludge...

  3. HASSP and HEAVY: Tools for automated heavy atom searches and refinement

    SciTech Connect (OSTI)

    Terwilliger, T.T.

    1994-06-01T23:59:59.000Z

    In this tutorial, a simple example using model data for one derivative with anomalous information will be used to demonstrate the use of HASSP and HEAVY in heavy atom determination and refinement. The data used here will actually be based on model MAD data that has been converted to MIR format using MADMRG, but the treatment is identical to that for any other SIR+anomalous data. The data nd most of the programs discussed here can be obtained by e-mail from ``terwil @prov2.lanl.gov`` along with VAX-specific command files to run the data through.

  4. Studies of the refining of crude cottonseed oil and its solutions in commercial hexane

    E-Print Network [OSTI]

    Zeitoun, Mohamed Ali

    1958-01-01T23:59:59.000Z

    oil. In a more recent patent (17) Clayton used 1.5 per cent by weight of 29 per cent ammonium hydroxide to refine soybean oil. The well-mixed oil and ammonia solution is heated to 200?F., then rapidly cooled to 150?F., and then centrifuged... neutralized by soda ash. The soap- stock is removed in a multi-tray thickener. The neutralized miscella is then washed countercurrently with dilute caustic soda solution then with water. It is claimed that this method substantially reduces oil loss...

  5. ,"U.S. Motor Gasoline Refiner Sales Volumes"

    U.S. Energy Information Administration (EIA) 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National and Regional Data; Row: NAICS Codes; Column: Energy Sources andPlant Liquids,+ LeasePriceExpectedOther CountriesTrinidadRefiner Sales

  6. Table 3b. Imported Refiner Acquisition Cost of Crude Oil, Projected vs. Actual

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTownDells,1Stocks Nov-14Total Delivered Residentialtightb. Imported Refiner

  7. Petroleum Refining Sector (NAICS 324110) Energy and GHG Combustion Emissions Profile, November 2012

    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 of Contamination in235-1 TermoelectricaPavingPerry Luksin About69 2.4 PETROLEUM REFINING

  8. NREL Refines Method to Convert Lignin to Nylon Precursor - News Releases |

    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: National5Saleshttp://www.fnal.gov/directorate/nalcal/nalcal02_07_05_files/nalcal.gifNREL NREL Refines Method to Convert Lignin to Nylon

  9. ,"Conventional Gasoline Sales to End Users, Total Refiner Sales Volumes"

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghurajiConventional Gasoline Sales to End Users, Total Refiner Sales Volumes" ,"Click worksheet

  10. ,"Kerosene-Type Jet Fuel Sales to End Users Refiner Sales Volumes"

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghurajiConventional Gasoline Sales to End Users, Total Refiner Sales Volumes"for

  11. ,"No. 2 Diesel Fuel Sales to End Users Refiner Sales Volumes"

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghurajiConventional Gasoline Sales to End Users, Total Refiner Sales Volumes"forUsers,

  12. ,"No. 2 Distillate Sales to End Users Refiner Sales Volumes"

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghurajiConventional Gasoline Sales to End Users, Total Refiner Sales Volumes"forUsers,Sales to End

  13. ,"Residual Fuel Oil Sales to End Users Refiner Sales Volumes"

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghurajiConventional Gasoline Sales to End Users, Total Refiner Sales Volumes"forUsers,Sales to Endto

  14. ,"U.S. Reformulated, Average Refiner Gasoline Prices"

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghurajiConventional Gasoline Sales toReformulated, Average Refiner Gasoline Prices" ,"Click

  15. ,"U.S. Sales for Resale, Total Refiner Motor Gasoline Sales Volumes"

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghurajiConventional Gasoline Sales toReformulated, Average Refiner Gasoline Prices"Sales Volumes

  16. ,"U.S. Sales to End Users, Total Refiner Motor Gasoline Sales Volumes"

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghurajiConventional Gasoline Sales toReformulated, Average Refiner Gasoline Prices"SalesSales

  17. Conformation-dependent backbone geometry restraints set a new standard for protein crystallographic refinement

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

    Moriarty, Nigel W.; Tronrud, Dale E.; Adams, Paul D.; Karplus, P. Andrew

    2014-09-01T23:59:59.000Z

    Ideal values of bond angles and lengths used as external restraints are crucial for the successful refinement of protein crystal structures at all but the highest of resolutions. The restraints in common usage today have been designed based on the assumption that each type of bond or angle has a single ideal value independent of context. However, recent work has shown that the ideal values are, in fact, sensitive to local conformation, and as a first step toward using such information to build more accurate models, ultra-high resolution protein crystal structures have been used to derive a conformation-dependent library (CDL)more »of restraints for the protein backbone (Berkholz et al. 2009. Structure. 17, 1316). Here, we report the introduction of this CDL into the Phenix package and the results of test refinements of thousands of structures across a wide range of resolutions. These tests show that use of the conformation dependent library yields models that have substantially better agreement with ideal main-chain bond angles and lengths and, on average, a slightly enhanced fit to the X-ray data. No disadvantages of using the backbone CDL are apparent. In Phenix usage of the CDL can be selected by simply specifying the cdl=True option. This successful implementation paves the way for further aspects of the context-dependence of ideal geometry to be characterized and applied to improve experimental and predictive modelling accuracy.« less

  18. Hydrodynamical adaptive mesh refinement simulations of turbulent flows - II. Cosmological simulations of galaxy clusters

    E-Print Network [OSTI]

    L. Iapichino; J. C. Niemeyer

    2008-07-01T23:59:59.000Z

    The development of turbulent gas flows in the intra-cluster medium and in the core of a galaxy cluster is studied by means of adaptive mesh refinement (AMR) cosmological simulations. A series of six runs was performed, employing identical simulation parameters but different criteria for triggering the mesh refinement. In particular, two different AMR strategies were followed, based on the regional variability of control variables of the flow and on the overdensity of subclumps, respectively. We show that both approaches, albeit with different results, are useful to get an improved resolution of the turbulent flow in the ICM. The vorticity is used as a diagnostic for turbulence, showing that the turbulent flow is not highly volume-filling but has a large area-covering factor, in agreement with previous theoretical expectations. The measured turbulent velocity in the cluster core is larger than 200 km/s, and the level of turbulent pressure contribution to the cluster hydrostatic equilibrium is increased by using the improved AMR criteria.

  19. Projected refined product balances in key Latin American countries: A preliminary examination

    SciTech Connect (OSTI)

    NONE

    1996-06-01T23:59:59.000Z

    Over the years, the East-West Center (EWC) has developed considerable expertise in refinery modeling, especially in the area of forecasting product balances for countries, given planned capacity changes, changes in product demand, changes in crude slates, and changes in product specifications. This expertise has been applied on an ongoing basis to the major refiners in the Middle East and the Asia-Pacific region, along with the US West Coast as region in its own right. Refinery modeling in these three areas has been ongoing for nearly 15 years at the Center, and the tools and information sources are now well developed. To date, the EWC has not applied these tools to Latin America. Although research on Latin America has been an ongoing area of concern at the Center in recent years, the information gathered to date is still not of the level of detail nor quality available for other areas. The modeling efforts undertaken in this report are of a ``baseline`` nature, designed to outline the major issues, attempt a first cut at emerging product balances, and, above all, to elicit commentary from those directly involved in the oil industry in the key countries modeled. Our experience in other regions has shown that it takes a few years dialogue with refiners and government planner in individual countries to develop a reliable database, as well as the insights into operational constraints and practices that make accurate modeling possible. This report is no more than a first step down the road.

  20. Conformation-dependent backbone geometry restraints set a new standard for protein crystallographic refinement

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

    Moriarty, Nigel W.; Tronrud, Dale E.; Adams, Paul D.; Karplus, P. Andrew

    2014-09-01T23:59:59.000Z

    Ideal values of bond angles and lengths used as external restraints are crucial for the successful refinement of protein crystal structures at all but the highest of resolutions. The restraints in common usage today have been designed based on the assumption that each type of bond or angle has a single ideal value independent of context. However, recent work has shown that the ideal values are, in fact, sensitive to local conformation, and as a first step toward using such information to build more accurate models, ultra-high resolution protein crystal structures have been used to derive a conformation-dependent library (CDL) of restraints for the protein backbone (Berkholz et al. 2009. Structure. 17, 1316). Here, we report the introduction of this CDL into the Phenix package and the results of test refinements of thousands of structures across a wide range of resolutions. These tests show that use of the conformation dependent library yields models that have substantially better agreement with ideal main-chain bond angles and lengths and, on average, a slightly enhanced fit to the X-ray data. No disadvantages of using the backbone CDL are apparent. In Phenix usage of the CDL can be selected by simply specifying the cdl=True option. This successful implementation paves the way for further aspects of the context-dependence of ideal geometry to be characterized and applied to improve experimental and predictive modelling accuracy.

  1. Solvent Refined Coal (SRC) process. Quarterly technical progress report, January 1979-March 1979

    SciTech Connect (OSTI)

    Not Available

    1980-02-01T23:59:59.000Z

    This report summarizes the progress of the Solvent Refined Coal (SRC) Project by the Pittsburg and Midway Coal Mining Co. for the Department of Energy for the period January 1, 1979 to March 31, 1979. Activities included the operation and modification of the Solvent Refined Coal Pilot Plant at Fort Lewis, Washington; the Process Development Unit P-99 at Harmarville, Pennsylvania; and research at Merriam Laboratory in Merriam, Kansas. The Pilot Plant processed Powhatan No. 5 Coal in the SRC-II mode of operation studying the effect of coal particle size and system temperature on coal slurry blending and the effect of carbon monoxide concentration in the reaction feed gas on process yields. January and February were spent completing installation of a fourth High Pressure Separator on Process Development Unit P-99 to better simulate operating conditions for the proposed Demonstration Plant. During March, one run was completed at P-99 feeding Pittsburgh Seam Coal from the Powhatan No. 5 Mine. Merriam investigations included a study of the effect of iron containing additives on SRC-I operation, the addition of carbon monoxide to the feed gas, utilization of a hydrogenated solvent (Cresap process solvent) in the SRC-I mode under both normal and short residence time operating conditions, and development of a simulated distillation technique to determine the entire boiling range distribution of product oils.

  2. Environmental-control considerations in the production and use of solvent-refined coal

    SciTech Connect (OSTI)

    Huang, H.S.

    1980-12-01T23:59:59.000Z

    This report presents the results of an environmental-control study of the solvent-refined-coal (SRC) process. The report complements a previous Argonne report: Assessment of Status of Technology for Solvent Refining of Coal (ANL/ECT-3, Appendix B). The current review separates discussion of environmental control into two broad sections: production of SRC fuels, both solid and liquid, and their utilization. Control technologies are briefly reviewed for the gas, liquid, and solid wastes generated by the production of SRC. For an SRC-I plant, producing solid product, potential waste streams are then identified and discussed in terms of applicable control technologies and promulgated EPA standards. The SRC-production section concludes with a discussion of the biological activity of certain products of an SRC-II plant, producing liquid fuel. The author summarizes recent experimental findings and recommends accelerated research at SRC plants to quantify the effects of biological activity and develop measures needed to reduce those effects. No unusual environmental-control problems have been detected in the combustion of SRC fuels. It is recommended, however, that more SRC combustion studies be made and that the solid and liquid fuels used in them be derived from a variety of parent coals. Such studies will establish the broad data base needed to demonstrate that SRC fuels burn efficiently within environmentally safe limits.

  3. ORNL/CON-496 METHODOLOGY FOR RECALCULATING

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    ORNL/CON-496 METHODOLOGY FOR RECALCULATING AND VERIFYING SAVINGS ACHIEVED BY THE SUPER ESPC PROGRAM for Recalculating and Verifying Savings Achieved by the Super ESPC Program Martin Schweitzer John A. Shonder Patrick.....................................................................................................................2 2. DESCRIPTION OF SUPER ESPC PROGRAM ......................................................... 3 2

  4. Con Eduardo Pavlovsky, cinco años después

    E-Print Network [OSTI]

    Giella, Miguel Á ngel

    1988-10-01T23:59:59.000Z

    preguntas que seguramente tendrán que ver con mi próxima problemática. No sé. Creo que uno no sabe mucho para dónde va a ir, ¿no?"4 Los cinco años transcurridos desde estas declaraciones han ser vido a este autor-actor-psicoanalista argentino para...

  5. iCons, 2011 Cholera in Haiti

    E-Print Network [OSTI]

    Auerbach, Scott M.

    © iCons, 2011 Cholera in Haiti Handouts: 1. 1-page explainer of cholera outbreak in Haiti Assignments Part 1: Developing an Explainer 1. In-class written assignment of societal challenge with cholera in Haiti 2. In-class written assignment of scientific investigation relating to cholera 3. Take

  6. How to Successfully Renovate a Controls System? - Lessons Learned from the Renovation of the CERN Injectors’ Controls Software

    E-Print Network [OSTI]

    Kruk, G; Kulikova, O; Lezhebokov, V; Pace, M; Pera Mira, P; Roux, E; Wozniak, J Pawel

    2014-01-01T23:59:59.000Z

    Renovation of the control system of the CERN LHC injectors was initiated in 2007 in the scope of the Injector Controls Architecture (InCA) project. One of its main objectives was to homogenize the controls software across CERN accelerators and reuse as much as possible the existing modern sub-systems, such as the settings management used for the LHC. The project team created a platform that would permit coexistence and intercommunication between old and new components via a dedicated gateway, allowing a progressive replacement of the former. Dealing with a heterogeneous environment, with many diverse and interconnected modules, implemented using different technologies and programming languages, the team had to introduce all the modifications in the smoothest possible way, without causing machine downtime. After a brief description of the system architecture, the paper discusses the technical and non-technical sides of the renovation process such as validation and deployment methodology, operational applicatio...

  7. Implementation of manufacturing data management application in the scientific research project. Case: CERN, the European Organization for Nuclear Research

    E-Print Network [OSTI]

    Saifoulina, Margarita

    2010-01-01T23:59:59.000Z

    This Bachelor’s thesis examined the implementation process of an MTF (Manufacturing and Test Folder) application in the CLIC (Compact Linear Collider) Radio Frequency Structure Development project for manufacturing data management purposes. The primary goal of the study was to investigate how MTF implementation and its integration with CERN EDMS (Engineering and Equipment Data Management System) system could facilitate product life cycle through the supply chain, and could affect on manufacturing operations performance in internaland external levels. The aim of the study was also to find out implementation differences within CERN (European Organization for Nuclear Research) projects. The study is divided into two parts: a qualitative theory section and an empirical section. In the theory section differences of features between PDM (Product Data Management), EDM (Engineering Data Management) and PLM (Product Life Cycle Management) systems were studied. The thesis examined the benefits and managerial challeng...

  8. The Histoty of Ventilation and Air Conditioning is CERN Up to Date with the latest Technological Developments?

    E-Print Network [OSTI]

    Kühnl-Kinel, J

    2000-01-01T23:59:59.000Z

    The invention of ventilation cannot be ascribed to a certain date. It started with simple aeration when man brought fire into his abode and continued through different stages including air cooling using ice to finally arrive at the time when ventilation and air conditioning has become an essential part of our life and plays an important role in human evolution. This paper presents the history of ventilation and air conditioning, explains the key constraints over the centuries, and shows its influence on everyday life. Some examples of previous air-conditioning plants are described and different approaches to the way of calculation of ventilation systems discussed. It gives an overview of the Heating, Ventilation and Air Conditioning (HVAC) installations at CERN and points out their particularities. It also compares them with the latest technological developments in the field as well as showing the new trends that are being applied at CERN.

  9. Exclusive photoproduction of J/psi and psi(2S) states in proton-proton collisions at the CERN LHC

    E-Print Network [OSTI]

    M. B. Gay Ducati; M. T. Griep; M. V. T. Machado

    2014-06-18T23:59:59.000Z

    In this work we investigate the exclusive photoproduction of J/psi and the radially excited psi(2S) state off nucleon in proton-proton collisions. The theoretical framework considered in the analysis is the light-cone dipole formalism and predictions are done for proton-proton collisions at the CERN-LHC energy of 7 TeV. The theoretical uncertainties are investigated and comparison is done to the recent LHCb Collaboration data for the exclusive charmonium production.

  10. Validation of the Read Out Electronics for the CMS Muon Drift Chambers at Tests Beam in CERN/GIF

    E-Print Network [OSTI]

    Fernández, C; Fouz-Iglesias, M C; Marin, J; Oller, J C; Willmott, C

    2002-01-01T23:59:59.000Z

    Part of the readout system for the CMS muon drift chambers has been tested in test beams at CERN/GIF. Read Out Board (ROB) and HPTD have been validated with signals from a real muon beam, with an structure and flux similar to LHC operating conditions and using one of the chambers produced in CIEMAT already located in the test beam area under normal gas and voltage conditions. (Author) 5 refs.

  11. Proposal for the award of a contract for the assembly on the CERN site of interconnections for the LHC machine

    E-Print Network [OSTI]

    2003-01-01T23:59:59.000Z

    This document concerns the award of a contract for the assembly on the CERN site of interconnections for the LHC machine. Following a market survey carried out among 70 firms in fourteen Member States, a call for tenders (IT-3099/AT/LHC) was sent on 14 April 2003 to one firm and four consortia in five Member States. By the closing date, CERN had received three tenders from three consortia in four Member States. The Finance Committee is invited to agree to the negotiation of a contract with the consortium INEO (FR), ENDEL (FR) and GTI (NL), the lowest bidder, for the assembly on the CERN site of interconnections for the LHC machine for a total amount of 6 792 836 euros (10 475 917 Swiss francs), subject to revision for inflation after 1 January 2006. The rate of exchange used is that stipulated in the tender. The consortium has indicated the following distribution by country of the contract value covered by this adjudication proposal: NL - 51%; FR - 49%.

  12. Results of the LHC Prototype Chromaticity Measurement System Studies in the CERN-SPS

    E-Print Network [OSTI]

    Steinhagen, R; Bohl, T; Gasior, M; Jones, O R; Kasinski, K K; Wenninger, J

    2008-01-01T23:59:59.000Z

    Tune and chromaticity control is an integral part of safe and reliable LHC operation. Tight tolerances on the maximum beam excursions allow excitation amplitudes of less than 30 $\\mu$m. This leaves only a small margin for transverse beam and momentum excitations, required for measuring tune and chromaticity. This contribution discusses the baseline LHC continuous chromaticity measurement with results from tests at the CERN-SPS. The system is based on continuous tracking of the tune using a Phase- Locked-Loop (PLL) while modulating the beam momentum. The high PLL tune resolution achieved, made it possible to detect chromaticity changes well below the nominally required 1 unit for relative momentum modulations of only $2·10^{-5}$. The sensitive tune measurement frontend employed allowed the PLL excitation and radial amplitudes to be kept below a few micrometers. These results show that this type of measurement can be considered as practically non-perturbative permitting its use even during nominal LHC operat...

  13. A Facility to Search for Hidden Particles (SHiP) at the CERN SPS

    E-Print Network [OSTI]

    Anelli, M; Arduini, G; Back, J J; Bagulya, A; Baldini, W; Baranov, A; Barker, G J; Barsuk, S; Battistin, M; Bauche, J; Bay, A; Bayliss, V; Bellagamba, L; Bencivenni, G; Bertani, M; Bezshyyko, O; Bick, D; Bingefors, N; Blondel, A; Bogomilov, M; Boyarsky, A; Bonacorsi, D; Bondarenko, D; Bonivento, W; Borburgh, J; Bradshaw, T; Brenner, R; Breton, D; Brook, N; Bruschi, M; Buonaura, A; Buontempo, S; Cadeddu, S; Calcaterra, A; Calviani, M; Campanelli, M; Capoccia, C; Cecchetti, A; Chatterjee, A; Chauveau, J; Chepurnov, A; Chernyavskiy, M; Ciambrone, P; Cicalo, C; Conti, G; Cornelis, K; Courthold, M; G Dallavalle, M; D'Ambrosio, N; De Lellis, G; De Serio, M; Dedenko, L; Di Crescenzo, A; Di Marco, N; Dib, C; Dietrich, J; Dijkstra, H; Domenici, D; Donskov, S; Druzhkin, D; Ebert, J; Egede, U; Egorov, A; Egorychev, V; El Alaoui, M A; Enik, T; Etenko, A; Fabbri, F; Fabbri, L; Fedorova, G; Felici, G; Ferro-Luzzi, M; Fini, R A; Franke, M; Fraser, M; Galati, G; Giacobbe, B; Goddard, B; Golinka-Bezshyyko, L; Golubkov, D; Golutvin, A; Gorbunov, D; Graverini, E; Grenard, J-L; Guler, A M; Hagner, C; Hakobyan, H; Helo, J C; van Herwijnen, E; Horvath, D; Iacovacci, M; Iaselli, G; Jacobsson, R; Kadenko, I; Kamiscioglu, M; Kamiscioglu, C; Khaustov, G; Khotjansev, A; Kilminster, B; Kim, V; Kitagawa, N; Kodama, K; Kolesnikov, A; Kolev, D; Komatsu, M; Konovalova, N; Koretskiy, S; Korolko, I; Korzenev, A; Kovalenko, S; Kudenko, Y; Kuznetsova, E; Lacker, H; Lai, A; Lanfranchi, G; Lauria, A; Lebbolo, H; Levy, J -M; Lista, L; Loverre, P; Lukiashin, A; Lyubovitskij, V E; Malinin, A; Manfredi, M; Perillo-Marcone, A; Marrone, A; Matev, R; Messomo, E N; Mermod, P; Mikado, S; Mikhaylov, Yu; Miller, J; Milstead, D; Mineev, O; Mingazheva, R; Mitselmakher, G; Miyanishi, M; Monacelli, P; Montanari, A; Montesi, M C; Morello, G; Morishima, K; Movtchan, S; Murzin, V; Naganawa, N; Naka, T; Nakamura, M; Nakano, T; Nurakhov, N; Obinyakov, B; Ocalan, K; Ogawa, S; Oreshkin, V; Orlov, A; Osborne, J; Pacholek, P; Panman, J; Paoloni, A; Paparella, L; Pastore, A; Patel, M; Petridis, K; Petrushin, M; Poli-Lener, M; Polukhina, N; Polyakov, V; Prokudin, M; Puddu, G; Pupilli, F; Rademakers, F; Rakai, A; Rawlings, T; Redi, F; Ricciardi, S; Rinaldesi, R; Roganova, T; Rogozhnikov, A; Rokujo, H; Romaniouk, A; Rosa, G; Rostovtseva, I; Rovelli, T; Ruchayskiy, O; Ruf, T; Saitta, G; Samoylenko, V; Samsonov, V; Sanz Ull, A; Saputi, A; Sato, O; Schmidt-Parzefall, W; Serra, N; Sgobba, S; Shaposhnikov, M; Shatalov, P; Shaykhiev, A; Shchutska, L; Shevchenko, V; Shibuya, H; Shitov, Y; Silverstein, S; Simone, S; Skorokhvatov, M; Smirnov, S; Solodko, E; Sosnovtsev, V; Spighi, R; Spinetti, M; Starkov, N; Storaci, B; Strabel, C; Strolin, P; Takahashi, S; Teterin, P; Tioukov, V; Tommasini, D; Treille, D; Tsenov, R; Tshchedrina, T; Ustyuzhanin, A; Vannucci, F; Venturi, V; Villa, M; Vincke, Heinz; Vincke, Helmut; Vladymyrov, M; Xella, S; Yalvac, M; Yershov, N; Yilmaz, D; U Yilmazer, A; Vankova-Kirilova, G; Zaitsev, Y; Zoccoli, A; CERN. Geneva. SPS and PS Experiments Committee; SPSC

    2015-01-01T23:59:59.000Z

    A new general purpose fixed target facility is proposed at the CERN SPS accelerator which is aimed at exploring the domain of hidden particles and make measurements with tau neutrinos. Hidden particles are predicted by a large number of models beyond the Standard Model. The high intensity of the SPS 400~GeV beam allows probing a wide variety of models containing light long-lived exotic particles with masses below ${\\cal O}$(10)~GeV/c$^2$, including very weakly interacting low-energy SUSY states. The experimental programme of the proposed facility is capable of being extended in the future, e.g. to include direct searches for Dark Matter and Lepton Flavour Violation. The facility will be serviced by a new dedicated beam line branched off the splitter section on the North Area. It is followed by a new target station and a magnetic shield to suppress beam induced background. The proposed orientation of the beam line and the underground complex allows reserving more than 100~m of space beyond the experiment...

  14. Simulations and measurements of beam loss patterns at the CERN Large Hadron Collider

    E-Print Network [OSTI]

    Bruce, R; Boccone, V; Bracco, C; Brugger, M; Cauchi, M; Cerutti, F; Deboy, D; Ferrari, A; Lari, L; Marsili, A; Mereghetti, A; Mirarchi, D; Quaranta, E; Redaelli, S; Robert-Demolaize, G; Rossi, A; Salvachua, B; Skordis, E; Tambasco, C; Valentino, G; Weiler, T; Vlachoudis, V; Wollmann, D

    2014-01-01T23:59:59.000Z

    The CERN Large Hadron Collider (LHC) is designed to collide proton beams of unprecedented energy, in order to extend the frontiers of high-energy particle physics. During the first very successful running period in 2010--2013, the LHC was routinely storing protons at 3.5--4 TeV with a total beam energy of up to 146 MJ, and even higher stored energies are foreseen in the future. This puts extraordinary demands on the control of beam losses. An un-controlled loss of even a tiny fraction of the beam could cause a superconducting magnet to undergo a transition into a normal-conducting state, or in the worst case cause material damage. Hence a multi-stage collimation system has been installed in order to safely intercept high-amplitude beam protons before they are lost elsewhere. To guarantee adequate protection from the collimators, a detailed theoretical understanding is needed. This article presents results of numerical simulations of the distribution of beam losses around the LHC that have leaked out of the co...

  15. Heavy Ion physics with the ALICE experiment at the CERN LHC

    E-Print Network [OSTI]

    J. Schukraft; for the ALICE Collaboration

    2011-09-20T23:59:59.000Z

    After close to 20 years of preparation, the dedicated heavy ion experiment ALICE took first data at the CERN LHC accelerator with proton collisions at the end of 2009 and with lead nuclei at the end of 2010. After a short introduction into the physics of ultra-relativistic heavy ion collisions, this article recalls the main design choices made for the detector and summarizes the initial operation and performance of ALICE. Physics results from this first year of operation concentrate on characterizing the global properties of typical, average collisions, both in pp and nucleus-nucleus reactions, in the new energy regime of LHC. The pp results differ, to a varying degree, from most QCD inspired phenomenological models and provide the input needed to fine-tune their parameters. First results from Pb-Pb are broadly consistent with expectations based on lower energy data, indicating that high density matter created at LHC, while much hotter and larger, still behaves like a very strongly interacting, almost perfect liquid.

  16. Leak-Tight Welding Experience from the Industrial Assembly of the LHC Cryostats at CERN

    E-Print Network [OSTI]

    Bourcey, N; Chiggiato, P; Limon, P; Mongelluzzo, A; Musso, G; Poncet, A; Parma, V

    2008-01-01T23:59:59.000Z

    The assembly of the approximately 1700 LHC main ring cryostats at CERN involved extensive welding of cryogenic lines and vacuum vessels. More than 6 km of welding requiring leak tightness to a rate better than 1.10-9 mbar.l.s-1 on stainless steel and aluminium piping and envelopes was made, essentially by manual welding but also making use of orbital welding machines. In order to fulfil the safety regulations related to pressure vessels and to comply with the leak-tightness requirements of the vacuum systems of the machine, welds were executed according to high qualification standards and following a severe quality assurance plan. Leak detection by He mass spectrometry was extensively used. Neon leak detection was used successfully to locate leaks in the presence of helium backgrounds. This paper presents the quality assurance strategy adopted for welds and leak detection. It presents the statistics of non-conformities on welds and leaks detected throughout the entire production and the advances in the use...

  17. Stabilizing effect of a double-harmonic RF system in the CERN PS

    SciTech Connect (OSTI)

    Bhat, C.; /Fermilab; Caspers, F.; Damerau, H.; Hancock, S.; Mahner, E.; Zimmermann, F.; /CERN

    2009-04-01T23:59:59.000Z

    Motivated by the discussions on scenarios for LHC upgrades, beam studies on the stability of flat bunches in a double-harmonic RF system have been conducted in the CERN Proton Synchrotron (PS). Injecting nearly nominal LHC beam intensity per cycle, 18 bunches are accelerated on harmonic h = 21 to 26GeV with the 10MHz RF system. On the flat-top, all bunches are then transformed to flat bunches by adiabatically adding RF voltage at h = 42 from a 20 MHz cavity in anti-phase to the h = 21 system. The voltage ratio V (h42)/V (h21) of about 0.5 was set according to simulations. For the next 140 ms, longitudinal profiles show stable bunches in the double-harmonic RF bucket until extraction. Without the second harmonic component, coupled-bunch oscillations are observed. The flatness of the bunches along the batch is analyzed as a measure of the relative phase error between the RF systems due to beam loading. The results of beam dynamics simulations and their comparison with the measured data are presented.

  18. Longitudinal Decorrelation of Anisotropic Flows in Heavy-ion Collisions at the CERN Large Hadron Collider

    E-Print Network [OSTI]

    Long-Gang Pang; Guang-You Qin; Victor Roy; Xin-Nian Wang; Guo-Liang Ma

    2015-04-22T23:59:59.000Z

    Fluctuations in the initial transverse energy-density distribution lead to anisotropic flows as observed in central high-energy heavy-ion collisions. Studies of longitudinal fluctuations of the anisotropic flows can shed further light on the initial conditions and dynamical evolution of the hot quark-gluon matter in these collisions. Correlations between anisotropic flows with varying pseudorapidity gaps in Pb+Pb collisions at the CERN Large Hadron Collider are investigated using both an event-by-event (3+1)-D ideal hydrodynamical model with fluctuating initial conditions and the a multiphase transport (AMPT) Monte Carlo model for high-energy heavy-ion collisions. Anisotropic flows at different pseudorapidities are found to become significantly decorrelated with increasing pseudo-rapidity gaps due to longitudinal fluctuations in the initial states of heavy-ion collisions. The longitudinal correlation of the elliptic flow shows a strong centrality dependence while the correlation of the triangular flow is independent of the centrality. Longitudinal fluctuations as a source of the decorrelation are further shown to consist of a twist or gradual rotation in flow angles between the forward and backward direction and additional fluctuations on top of the twist. Within the AMPT model, longitudinal correlations of anisotropic flows are also found to depend on the value of partonic cross sections. The implicatiosn of constraining the initial conditions and shear viscosity to entropy density ratio of the partonic matter in high-energy heavy-ion collisions are also discussed.

  19. Beyond the Large Hadron Collider: a first look at cryogenics for CERN future circular colliders

    E-Print Network [OSTI]

    Lebrun, Ph

    2014-01-01T23:59:59.000Z

    Following the first experimental discoveries at the Large Hadron Collider (LHC) and the recent update of the European strategy in particle physics, CERN has undertaken an international study of possible future circular colliders beyond the LHC. The study, conducted with the collaborative participation of interested institutes world-wide, considers several options for very high energy hadron-hadron, electron-positron and hadron-electron colliders to be installed in a quasi-circular underground tunnel in the Geneva basin, with a circumference of 80 km to 100 km. All these machines would make intensive use of advanced superconducting devices, i.e. high-field bending and focusing magnets and/or accelerating RF cavities, thus requiring large helium cryogenic systems operating at 4.5 K or below. Based on preliminary sets of parameters and layouts for the particle colliders under study, we discuss the main challenges of their cryogenic systems and present first estimates of the cryogenic refrigeration capacities req...

  20. Discriminating among the theoretical origins of new heavy Majorana neutrinos at the CERN LHC

    E-Print Network [OSTI]

    F. M. L. de Almeida Jr.; Y. A. Coutinho; J. A. Martins Simoes; A. J. Ramalho; S. Wulck; M. A. B. do Vale

    2007-03-08T23:59:59.000Z

    A study on the possibility of distinguishing new heavy Majorana neutrino models at LHC energies is presented. The experimental confirmation of standard neutrinos with non-zero mass and the theoretical possibility of lepton number violation find a natural explanation when new heavy Majorana neutrinos exist. These new neutrinos appear in models with new right-handed singlets, in new doublets of some grand unified theories and left-right symmetrical models. It is expected that signals of new particles can be found at the CERN high-energy hadron collider (LHC). We present signatures and distributions that can indicate the theoretical origin of these new particles. The single and pair production of heavy Majorana neutrinos are calculated and the model dependence is discussed. Same-sign dileptons in the final state provide a clear signal for the Majorana nature of heavy neutrinos, since there is lepton number violation. Mass bounds on heavy Majorana neutrinos allowing model discrimination are estimated for three different LHC luminosities.

  1. SPL-based Proton Driver for a nu-Factory at CERN

    E-Print Network [OSTI]

    Benedetto, E; Garoby, R; Meddahi, M

    2010-01-01T23:59:59.000Z

    The conceptual design and feasibility studies for a nu-Factory Proton Driver based on the CERN Superconducting Proton Linac (SPL) have been com- pleted. In the proposed scenario, the 4 MW proton beam (H- beam) is acceler- ated with the upgraded High Power (HP)-SPL to 5 GeV, stored in an accumu- lator ring and Þnally transported to a compressor ring, where bunch rotation takes place, in order to achieve the speciÞc time structure. We here summa- rize the choices in terms of lattice, magnet technology and RF manipulations in the two rings. The possible critical issues, such as heating of the foil for the charge-exchange injection, space-charge problems in the compressor and beam stability in the accumulator ring, have been addressed and are shown not to be show-stoppers. The analysis focuses on the baseline scenario, consider- ing 6 bunches in the accumulator, and preliminary studies are discussed for the option of 3 or a single bunch per burst.

  2. Improving macromolecular atomic models at moderate resolution by automated iterative model building, statistical density modification and refinement

    SciTech Connect (OSTI)

    Terwilliger, Thomas C., E-mail: terwilliger@lanl.gov [Mail Stop M888, Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

    2003-07-01T23:59:59.000Z

    A procedure for iterative model-building, statistical density modification and refinement at moderate resolution (up to about 2.8 Å) is described. An iterative process for improving the completeness and quality of atomic models automatically built at moderate resolution (up to about 2.8 Å) is described. The process consists of cycles of model building interspersed with cycles of refinement and combining phase information from the model with experimental phase information (if any) using statistical density modification. The process can lead to substantial improvements in both the accuracy and completeness of the model compared with a single cycle of model building. For eight test cases solved by MAD or SAD at resolutions ranging from 2.0 to 2.8 Å, the fraction of models built and assigned to sequence was 46–91% (mean of 65%) after the first cycle of building and refinement, and 78-95% (mean of 87%) after 20 cycles. In an additional test case, an incorrect model of gene 5 protein (PDB code 2gn5; r.m.s.d. of main-chain atoms from the more recent refined structure 1vqb at 1.56 Å) was rebuilt using only structure-factor amplitude information at varying resolutions from 2.0 to 3.0 Å. Rebuilding was effective at resolutions up to about 2.5 Å. The resulting models had 60-80% of the residues built and an r.m.s.d. of main-chain atoms from the refined structure of 0.20 to 0.62 Å. The algorithm is useful for building preliminary models of macromolecules suitable for an experienced crystallographer to extend, correct and fully refine.

  3. Refined model of the {Fe9} magnetic molecule from low-temperature inelastic neutron scattering studies

    SciTech Connect (OSTI)

    Engelhardt, Larry [Francis Marion University; Demmel, Franz [Rutherford Appleton Laboratory; Luban, Marshall [Ames Laboratory; Timco, Grigore A [The University of Manchester; Tuna, Floriana [The University of Manchester; Winpenny, Richard E [The University of Manchester

    2014-06-01T23:59:59.000Z

    We present a refined model of the {Fe9} tridiminished icosahedron magnetic molecule system. This molecule was originally modeled as being composed of two ({Fe3} and {Fe6}) clusters, with the Fe3+ ions within each cluster being coupled via exchange interactions, but with no coupling between the clusters. The present inelastic neutron scattering (INS) measurements were used to probe the low-lying energy spectrum of {Fe9}, and these results demonstrate that the previously published model of two uncoupled clusters is incomplete. To achieve agreement between the experiment and theory, we have augmented the model with relatively small exchange coupling between the clusters. A combination of Lanczos matrix diagonalization and quantum Monte Carlo simulations have been used to achieve good agreement between the experimental data and the improved model of the full {Fe9} system despite the complexity of this model (with Hilbert space dimension >107).

  4. Dynamic Implicit 3D Adaptive Mesh Refinement for Non-Equilibrium Radiation Diffusion

    SciTech Connect (OSTI)

    Philip, Bobby [ORNL] [ORNL; Wang, Zhen [ORNL] [ORNL; Berrill, Mark A [ORNL] [ORNL; Rodriguez Rodriguez, Manuel [ORNL] [ORNL; Pernice, Michael [Idaho National Laboratory (INL)] [Idaho National Laboratory (INL)

    2014-01-01T23:59:59.000Z

    The time dependent non-equilibrium radiation diffusion equations are important for solving the transport of energy through radiation in optically thick regimes and find applications in several fields including astrophysics and inertial confinement fusion. The associated initial boundary value problems that are encountered exhibit a wide range of scales in space and time and are extremely challenging to solve. To efficiently and accurately simulate these systems we describe our research on combining techniques that will also find use more broadly for long term time integration of nonlinear multiphysics systems: implicit time integration for efficient long term time integration of stiff multiphysics systems, local control theory based step size control to minimize the required global number of time steps while controlling accuracy, dynamic 3D adaptive mesh refinement (AMR) to minimize memory and computational costs, Jacobian Free Newton Krylov methods on AMR grids for efficient nonlinear solution, and optimal multilevel preconditioner components that provide level independent linear solver convergence.

  5. Refinement of the twinned structure of cymrite from the Ruby Creek deposit (Alaska)

    SciTech Connect (OSTI)

    Bolotina, N. B.; Rastsvetaeva, R. K., E-mail: rast@ns.crys.ras.ru; Kashaev, A. A. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)

    2010-07-15T23:59:59.000Z

    The mineral cymrite from the Ruby Creek deposit (Alaska) was reinvestigated by X-ray diffraction in a pseudo-orthorhombic unit cell with a = 5.3350(1) A, b = 36.9258(8) A, c = 7.6934(1) A, {beta} = 90.00(1){sup o}. A twin law corresponding to a sixfold axis was revealed for the first time. The structure was refined in the monoclinic space group P12{sub 1}1 to the R factor of 5.4%. The Al and Si atoms are assumed to be ordered within a double layer. The rotation of the cation sublattice by 60{sup o} around the c axis leads to the disorder of the T sites in the crystal structure (T = Al, Si).

  6. Development of the electron beam melting and refining in the Eastern Europe

    SciTech Connect (OSTI)

    Mladenov, G.M. [Institute of Electronics, Sofia (Bulgaria)

    1994-12-31T23:59:59.000Z

    A open research potential for the many R & D projects, as well as developed industrial structures exist in the Central and Eastern Europe countries. Now the economy crisis in this part of the world, due to the positive exiting democratic changes and to the transition from central planned to the market economy are a challenge. Bridging the research and industrial potential of the Eastern Europe to the developed economies is a way to keep the knowledge and people with activity in this field and to extend the future market of EB products. A brief revue of the institutions and a very short general information for the EB melting and refinement development in the Eastern Europe countries is given.

  7. Proceedings of the conference on electron beam melting and refining - state of the art 1994

    SciTech Connect (OSTI)

    Bakish, R. [ed.

    1994-12-31T23:59:59.000Z

    The volume: Proceedings of the Conference on Electron Beam Melting and Refining-State of the Art 1994 covers many aspects of electron beam production, process control, components, and applications. Included were several papers from the defunct Soviet Bloc nations concerning the specifications and uses for their electron beam furnaces. Main topics of the conference were: Electron Beam (EB) Equipment; Safety and Analytical Aspects related to EB Melting; Material Processing with EB; Other Applications for EB; and A Look at EB in the East. EB has many uses, several papers mentioned the recycling of uranium scrap, the casting of heat resistant or corrosion resistant alloys, or the improved microstructure of alloys with the technique.

  8. Iterative build OMIT maps: Map improvement by iterative model-building and refinement without model bias

    SciTech Connect (OSTI)

    Los Alamos National Laboratory, Mailstop M888, Los Alamos, NM 87545, USA; Lawrence Berkeley National Laboratory, One Cyclotron Road, Building 64R0121, Berkeley, CA 94720, USA; Department of Haematology, University of Cambridge, Cambridge CB2 0XY, England; Terwilliger, Thomas; Terwilliger, T.C.; Grosse-Kunstleve, Ralf Wilhelm; Afonine, P.V.; Moriarty, N.W.; Zwart, P.H.; Hung, L.-W.; Read, R.J.; Adams, P.D.

    2008-02-12T23:59:59.000Z

    A procedure for carrying out iterative model-building, density modification and refinement is presented in which the density in an OMIT region is essentially unbiased by an atomic model. Density from a set of overlapping OMIT regions can be combined to create a composite 'Iterative-Build' OMIT map that is everywhere unbiased by an atomic model but also everywhere benefiting from the model-based information present elsewhere in the unit cell. The procedure may have applications in the validation of specific features in atomic models as well as in overall model validation. The procedure is demonstrated with a molecular replacement structure and with an experimentally-phased structure, and a variation on the method is demonstrated by removing model bias from a structure from the Protein Data Bank.

  9. Astrophysical hydrodynamics with a high-order discontinuous Galerkin scheme and adaptive mesh refinement

    E-Print Network [OSTI]

    Schaal, Kevin; Chandrashekar, Praveen; Pakmor, Rüdiger; Klingenberg, Christian; Springel, Volker

    2015-01-01T23:59:59.000Z

    Solving the Euler equations of ideal hydrodynamics as accurately and efficiently as possible is a key requirement in many astrophysical simulations. It is therefore important to continuously advance the numerical methods implemented in current astrophysical codes, especially also in light of evolving computer technology, which favours certain computational approaches over others. Here we introduce the new adaptive mesh refinement (AMR) code TENET, which employs a high-order Discontinuous Galerkin (DG) scheme for hydrodynamics. The Euler equations in this method are solved in a weak formulation with a polynomial basis by means of explicit Runge-Kutta time integration and Gauss-Legendre quadrature. This approach offers significant advantages over commonly employed finite volume (FV) solvers. In particular, the higher order capability renders it computationally more efficient, in the sense that the same precision can be obtained at significantly less computational cost. Also, the DG scheme inherently conserves a...

  10. Lance for fuel and oxygen injection into smelting or refining furnace

    DOE Patents [OSTI]

    Schlichting, M.R.

    1994-12-20T23:59:59.000Z

    A furnace for smelting iron ore and/or refining molten iron is equipped with an overhead pneumatic lance, through which a center stream of particulate coal is ejected at high velocity into a slag layer. An annular stream of nitrogen or argon enshrouds the coal stream. Oxygen is simultaneously ejected in an annular stream encircling the inert gas stream. The interposition of the inert gas stream between the coal and oxygen streams prevents the volatile matter in the coal from combusting before it reaches the slag layer. Heat of combustion is thus more efficiently delivered to the slag, where it is needed to sustain the desired reactions occurring there. A second stream of lower velocity oxygen can be delivered through an outermost annulus to react with carbon monoxide gas rising from slag layer, thereby adding still more heat to the furnace. 7 figures.

  11. 3D Adaptive Mesh Refinement Simulations of Pellet Injection in Tokamaks

    SciTech Connect (OSTI)

    R. Samtaney; S.C. Jardin; P. Colella; D.F. Martin

    2003-10-20T23:59:59.000Z

    We present results of Adaptive Mesh Refinement (AMR) simulations of the pellet injection process, a proven method of refueling tokamaks. AMR is a computationally efficient way to provide the resolution required to simulate realistic pellet sizes relative to device dimensions. The mathematical model comprises of single-fluid MHD equations with source terms in the continuity equation along with a pellet ablation rate model. The numerical method developed is an explicit unsplit upwinding treatment of the 8-wave formulation, coupled with a MAC projection method to enforce the solenoidal property of the magnetic field. The Chombo framework is used for AMR. The role of the E x B drift in mass redistribution during inside and outside pellet injections is emphasized.

  12. Development of a performance-based industrial energy efficiency indicator for corn refining plants.

    SciTech Connect (OSTI)

    Boyd, G. A.; Decision and Information Sciences; USEPA

    2006-07-31T23:59:59.000Z

    Organizations that implement strategic energy management programs have the potential to achieve sustained energy savings if the programs are carried out properly. A key opportunity for achieving energy savings that plant managers can take is to determine an appropriate level of energy performance by comparing their plant's performance with that of similar plants in the same industry. Manufacturing facilities can set energy efficiency targets by using performance-based indicators. The U.S. Environmental Protection Agency (EPA), through its ENERGY STAR{reg_sign} program, has been developing plant energy performance indicators (EPIs) to encourage a variety of U.S. industries to use energy more efficiently. This report describes work with the corn refining industry to provide a plant-level indicator of energy efficiency for facilities that produce a variety of products--including corn starch, corn oil, animal feed, corn sweeteners, and ethanol--for the paper, food, beverage, and other industries in the United States. Consideration is given to the role that performance-based indicators play in motivating change; the steps needed to develop indicators, including interacting with an industry to secure adequate data for an indicator; and the actual application and use of an indicator when complete. How indicators are employed in the EPA's efforts to encourage industries to voluntarily improve their use of energy is discussed as well. The report describes the data and statistical methods used to construct the EPI for corn refining plants. Individual equations are presented, as are the instructions for using them in an associated Excel spreadsheet.

  13. Synthesis and single crystal structure refinement of the one-layer hydrate of sodium brittle mica

    SciTech Connect (OSTI)

    Kalo, Hussein; Milius, Wolfgang [Lehrstuhl fuer Anorganische Chemie I, University of Bayreuth, D-95440 Bayreuth (Germany)] [Lehrstuhl fuer Anorganische Chemie I, University of Bayreuth, D-95440 Bayreuth (Germany); Braeu, Michael [BASF Construction Chemicals GmbH, 83308 Trostberg (Germany)] [BASF Construction Chemicals GmbH, 83308 Trostberg (Germany); Breu, Josef, E-mail: Josef.Breu@uni-bayreuth.de [Lehrstuhl fuer Anorganische Chemie I, University of Bayreuth, D-95440 Bayreuth (Germany)] [Lehrstuhl fuer Anorganische Chemie I, University of Bayreuth, D-95440 Bayreuth (Germany)

    2013-02-15T23:59:59.000Z

    A sodium brittle mica with the ideal composition [Na{sub 4}]{sup inter}[Mg{sub 6}]{sup oct}[Si{sub 4}Al{sub 4}]{sup tet}O{sub 20}F{sub 4} was synthesized via melt synthesis in a gas tight crucible. This mica is unusual inasmuch as the known mica structure holds only room for two interlayer cations per unit cell and inasmuch as it readily hydrates despite the high layer charge while ordinary micas and brittle micas are non-swelling. The crystal structure of one-layer hydrate sodium brittle mica was determined and refined from single crystal X-ray data. Interlayer cations reside at the center of the distorted hexagonal cavities and are coordinated by the three inner basal oxygen atoms. The coordination of the interlayer cation is completed by three interlayer water molecules residing at the center of the interlayer region. The relative position of adjacent 2:1-layers thus is fixed by these octahedrally coordinated interlayer cations. Pseudo-symmetry leads to extensive twinning. In total five twin operations generate the same environment for the interlayer species and are energetically degenerate. - Graphical abstract: The sodium brittle mica has been successfully synthesized by melt synthesis and the crystal structure of the one-layer hydrate of sodium brittle mica was determined from single crystal X-ray diffraction data. Highlights: Black-Right-Pointing-Pointer Melt synthesis yielded coarse grained sodium brittle mica which showed little disorder. Black-Right-Pointing-Pointer Sodium brittle mica hydrated completely to the state of one-layer hydrate. Black-Right-Pointing-Pointer Structure of one-layer hydrate of sodium brittle mica could therefore be determined and refined. Black-Right-Pointing-Pointer Arrangement of upper and lower tetrahedral sheet encompassing interlayer cation were clarified.

  14. An enriched finite element model with q-refinement for radiative boundary layers in glass cooling

    SciTech Connect (OSTI)

    Mohamed, M. Shadi [Institute for Infrastructure and Environment, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom)] [Institute for Infrastructure and Environment, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom); Seaid, Mohammed; Trevelyan, Jon [School of Engineering and Computing Sciences, University of Durham, South Road, Durham DH1 3LE (United Kingdom)] [School of Engineering and Computing Sciences, University of Durham, South Road, Durham DH1 3LE (United Kingdom); Laghrouche, Omar [Institute for Infrastructure and Environment, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom)] [Institute for Infrastructure and Environment, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom)

    2014-02-01T23:59:59.000Z

    Radiative cooling in glass manufacturing is simulated using the partition of unity finite element method. The governing equations consist of a semi-linear transient heat equation for the temperature field and a stationary simplified P{sub 1} approximation for the radiation in non-grey semitransparent media. To integrate the coupled equations in time we consider a linearly implicit scheme in the finite element framework. A class of hyperbolic enrichment functions is proposed to resolve boundary layers near the enclosure walls. Using an industrial electromagnetic spectrum, the proposed method shows an immense reduction in the number of degrees of freedom required to achieve a certain accuracy compared to the conventional h-version finite element method. Furthermore the method shows a stable behaviour in treating the boundary layers which is shown by studying the solution close to the domain boundaries. The time integration choice is essential to implement a q-refinement procedure introduced in the current study. The enrichment is refined with respect to the steepness of the solution gradient near the domain boundary in the first few time steps and is shown to lead to a further significant reduction on top of what is already achieved with the enrichment. The performance of the proposed method is analysed for glass annealing in two enclosures where the simplified P{sub 1} approximation solution with the partition of unity method, the conventional finite element method and the finite difference method are compared to each other and to the full radiative heat transfer as well as the canonical Rosseland model.

  15. Simulations and measurements of beam loss patterns at the CERN Large Hadron Collider

    E-Print Network [OSTI]

    R. Bruce; R. W. Assmann; V. Boccone; C. Bracco; M. Brugger; M. Cauchi; F. Cerutti; D. Deboy; A. Ferrari; L. Lari; A. Marsili; A. Mereghetti; D. Mirarchi; E. Quaranta; S. Redaelli; G. Robert-Demolaize; A. Rossi; B. Salvachua; E. Skordis; C. Tambasco; G. Valentino; T. Weiler; V. Vlachoudis; D. Wollmann

    2014-09-10T23:59:59.000Z

    The CERN Large Hadron Collider (LHC) is designed to collide proton beams of unprecedented energy, in order to extend the frontiers of high-energy particle physics. During the first very successful running period in 2010--2013, the LHC was routinely storing protons at 3.5--4 TeV with a total beam energy of up to 146 MJ, and even higher stored energies are foreseen in the future. This puts extraordinary demands on the control of beam losses. An un-controlled loss of even a tiny fraction of the beam could cause a superconducting magnet to undergo a transition into a normal-conducting state, or in the worst case cause material damage. Hence a multi-stage collimation system has been installed in order to safely intercept high-amplitude beam protons before they are lost elsewhere. To guarantee adequate protection from the collimators, a detailed theoretical understanding is needed. This article presents results of numerical simulations of the distribution of beam losses around the LHC that have leaked out of the collimation system. The studies include tracking of protons through the fields of more than 5000 magnets in the 27 km LHC ring over hundreds of revolutions, and Monte-Carlo simulations of particle-matter interactions both in collimators and machine elements being hit by escaping particles. The simulation results agree typically within a factor 2 with measurements of beam loss distributions from the previous LHC run. Considering the complex simulation, which must account for a very large number of unknown imperfections, and in view of the total losses around the ring spanning over 7 orders of magnitude, we consider this an excellent agreement. Our results give confidence in the simulation tools, which are used also for the design of future accelerators.

  16. Model Refinement Needs A model developed by Peters and Marmorek (2003) will be used to generate predictions for

    E-Print Network [OSTI]

    449 Model Refinement Needs A model developed by Peters and Marmorek (2003) will be used to generate primarily an energy sink or primarily a source of food? More information is needed as to interactions predictions for comparison with observed variations in kokanee production. As with most models

  17. How smooth is the smoothest function in a given refinable space? Albert Cohen, Ingrid Daubechies, Amos Ron

    E-Print Network [OSTI]

    Ron, Amos

    of wavelets from multiresolution analysis, as well as in the study of subdivision algorithms is well are the univariate splines and the multivariate box splines (cf. [2]), and for these spline spaces the rigidHow smooth is the smoothest function in a given refinable space? Albert Cohen, Ingrid Daubechies

  18. How smooth is the smoothest function in a given refinable space? Albert Cohen, Ingrid Daubechies, Amos Ron

    E-Print Network [OSTI]

    Liblit, Ben

    analysis, as well as in the study of subdivision algorithms is well-known, well-understood and well of such spaces are the univariate splines and the multivariate box splines (cf. [2]), and for these spline spacesHow smooth is the smoothest function in a given refinable space? Albert Cohen, Ingrid Daubechies

  19. A posteriori error estimates with application of adaptive mesh refinement for thermal multiphase compositional flows in porous

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of diffusive fluxes. Numerical results on an example of real-life thermal oil-recovery in a reservoir refinement, compositional Darcy flow, thermal flow, finite volume method 1 Introduction The thermal under a non-isothermal condition. The governing equations are the conservation of the amount of each

  20. Using Knowledge-Based Neural Networks to Improve Algorithms: Refining the Chou-Fasman Algorithm for Protein Folding

    E-Print Network [OSTI]

    Maclin, Rich

    for Protein Folding Richard Maclin Jude W. Shavlik Computer Sciences Dept. University of Wisconsin 1210 W learning Theory refinement Neural networks Finite-state automata Protein folding Chou-Fasman algorithm-Fasman algorithm, a method for predicting how globular proteins fold. Empirical evidence shows

  1. Goal: develop high-level decision-making optimization to predict structural modifications in refining and logistics assets using more rigorous formulations

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    Processing Blending Quantitative Methods for Strategic and Investment Planning in the Oil-Refining Industry in refining and logistics assets using more rigorous formulations PETROBRAS Current Tool for Strategic, When to Invest? Only optimize streams transfers (oil and fuels import/export, market supply) + NLP

  2. FuelCon AG | 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 A PotentialJumpGermanFife EnergyFreight BestFuel Cell ControlCellsFuelFuelCon

  3. GasCon | 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 A PotentialJumpGermanFifeGEXAGarnet VRX sro Jump to: navigation, searchGasCon

  4. Property:Oth cons | 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:Ezfeedflag Jump to: navigation,ProjectStartDateProperty EditResultsUtility Jump to:Oth cons

  5. ConEdison Solutions | 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:PowerCER.png ElColumbia,2005) | Open(Thompson,2006)airConEdison

  6. Property:Ind cons | 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 YouKizildere I Geothermal PwerPerkins County, Nebraska:PrecourtOid JumpEligSysSize JumpTechDsc Jump to:Ind cons Jump to:

  7. The potential impact of proposed hazardous air pollutant legislation on the US refining industry. Final report, Task 9

    SciTech Connect (OSTI)

    Not Available

    1989-11-01T23:59:59.000Z

    The Administration has recently submitted a Clean Air Act Bill to Congress which would significantly modify the regulatory treatment of industrial hazardous air pollutants (air toxics). The adverse economic impacts of this legislation on the petroleum refining industry could be substantial. Depending on how EPA interprets the legislative language, the capital costs of compliance for the proposed bill could range from $1.3 to $15.0 billion. At the upper end of the range, costs of this order of magnitude would be over 2.5 times larger than the combined estimated cost of EPAs gasoline volatility (RVP) regulations and the proposed diesel sulfur content regulations. Potential compliance costs could be as much as $0.40 per barrel processed for large, complex refineries and as much as $0.50 per barrel for some small, simple refineries. For perspective, total refining costs, including a normal return on investment, are $4--5 per barrel. Because foreign refineries supplying the US will not be affected by the US air toxics regulations, US refineries may not be able to raise prices sufficiently to recover their compliance costs. For this reason, the air toxic legislation may put US refineries at an economic disadvantage relative to foreign competitors. Even under the best petroleum product market conditions, costs of $0.40 to $0.50 per barrel processed could reduce US Gulf refiner cash operating margins by as much as 29 percent. Under less favorable market conditions, such as the mid-80`s when refiners were losing money, the hazardous air pollutant regulations could greatly increase US refiner operating losses and potentially lead to closure of some marginal refineries.

  8. The high Beta cryo-modules and the associated cryogenic system for the HIE-ISOLDE upgrade at CERN

    SciTech Connect (OSTI)

    Delruelle, N.; Leclercq, Y.; Pirotte, O.; Ramos, D.; Tibaron, P.; Vandoni, G.; Williams, L. [CERN, CH1211 Geneva 23 (Switzerland)

    2014-01-29T23:59:59.000Z

    The major upgrade of the energy and intensity of the existing ISOLDE and REX-ISOLDE radioactive ion beam facilities at CERN requires the replacement of most of the existing ISOLDE post-acceleration equipment by a superconducting linac based on quarter-wave resonators housed together with superconducting solenoids in a series of four high-? and two low-? cryo-modules. As well as providing optimum conditions for physics, the cryo-modules need to function under stringent vacuum and cryogenic conditions. We present the detail design and expected cryogenic performance of the high- ? cryo-module together with the cryogenic supply and distribution system destined to service the complete superconducting linac.

  9. Automatisation du processus d'import des métadonnées INIS dans les bases de données bibliographiques du CERN

    E-Print Network [OSTI]

    Baudic, Romain

    2004-01-01T23:59:59.000Z

    Ce travail présente la mission que j’ai eu à accomplir pendant mon stage de fin d’étude au Service d’Information Scientifique du CERN. Il s’agissait de participer à l’activité d’importation automatique de documents provenant de la base de données INIS au sein de la base de données locale. Ce processus est possible grâce au programme de transformation de données Uploader. Ce mémoire tente de montrer quelle a été la méthode suivie : l’analyse de la source à exploiter et l’importation de ces données.

  10. Performance of an efficient 6 kW helium refrigerator for the LEP 200 project at CERN

    SciTech Connect (OSTI)

    Erdt, W.K.; Frandsen, P.; Guesewell, D.; Solheim, N.O.; Winkler, G. [CERN, Geneva (Switzerland); Kurtcuoglu, K.; Loehlein, K.; Senn, A.E.; Wagner, U.; Ziegler, B. [LINDE KRYOTECHNIK, Pfungen (Switzerland)

    1994-12-31T23:59:59.000Z

    CERN has installed helium refrigeration plants for the LEP 200 project in 1991 with an equivalent refrigeration capacity of 6 kW at 4.5 K. The cold boxes of the plants were specified to be installed in the LEP tunnel and were therefore limited regarding their physical size. The LINDE helium refrigeration plant combines an extremely compact construction with a remarkably good cycle efficiency. It was in part achieved by arranging 3 expansion turbines in the temperature region below 20 K, one of which expands to roughly saturated liquid. The paper describes the system, the results of performance measurements, and the experience obtained during more than one year of operation.

  11. Frozen motion model and dilepton production from 200A GeV S+W collisions at CERN SPS

    E-Print Network [OSTI]

    A. K. Chaudhuri

    1997-12-03T23:59:59.000Z

    We have analysed the invariant mass distribution of dileptons in S+W collisions at 200A GeV as measured by the HELIOS-3 collaboration at CERN SPS. Three scenarios were considered where the collision lead to formation of (i) the quark-gluon plasma, (ii) the ideal hot hadron gas and (iii) the viscous hot hadron gas. The space-time evolution was governed by the minimal extension of the Bjorken hydrodynamics. All the three scenarios indicate excess dileptons in the experiment.

  12. Chronological refinement of an ice core record at Upper Fremont Glacier in south central North America

    SciTech Connect (OSTI)

    Schuster, Paul F. [U.S. Geological Survey, Water Resources Division, Boulder, Colorado (United States)] [U.S. Geological Survey, Water Resources Division, Boulder, Colorado (United States); White, David E. [Golden Software, Golden, Colorado (United States)] [Golden Software, Golden, Colorado (United States); Naftz, David L. [U.S. Geological Survey, Water Resources Division, Salt Lake City, Utah (United States)] [U.S. Geological Survey, Water Resources Division, Salt Lake City, Utah (United States); Cecil, L. DeWayne [U.S. Geological Survey, Water Resources Division, Idaho Falls, Idaho (United States)] [U.S. Geological Survey, Water Resources Division, Idaho Falls, Idaho (United States)

    2000-02-27T23:59:59.000Z

    The potential to use ice cores from alpine glaciers in the midlatitudes to reconstruct paleoclimatic records has not been widely recognized. Although excellent paleoclimatic records exist for the polar regions, paleoclimatic ice core records are not common from midlatitude locations. An ice core removed from the Upper Fremont Glacier in Wyoming provides evidence for abrupt climate change during the mid-1800s. Volcanic events (Krakatau and Tambora) identified from electrical conductivity measurements (ECM) and isotopic and chemical data from the Upper Fremont Glacier were reexamined to confirm and refine previous chronological estimates of the ice core. At a depth of 152 m the refined age-depth profile shows good agreement (1736{+-}10 A.D.) with the {sup 14}C age date (1729{+-}95 A.D.). The {delta}{sup 18}O profile of the Upper Fremont Glacier (UFG) ice core indicates a change in climate known as the Little Ice Age (LIA). However, the sampling interval for {delta}{sup 18}O is sufficiently large (20 cm) such that it is difficult to pinpoint the LIA termination on the basis of {delta}{sup 18}O data alone. Other research has shown that changes in the {delta}{sup 18}O variance are generally coincident with changes in ECM variance. The ECM data set contains over 125,000 data points at a resolution of 1 data point per millimeter of ice core. A 999-point running average of the ECM data set and results from f tests indicates that the variance of the ECM data decreases significantly at about 108 m. At this depth, the age-depth profile predicts an age of 1845 A.D. Results indicate the termination of the LIA was abrupt with a major climatic shift to warmer temperatures around 1845 A.D. and continuing to present day. Prediction limits (error bars) calculated for the profile ages are {+-}10 years (90% confidence level). Thus a conservative estimate for the time taken to complete the LIA climatic shift to present-day climate is about 10 years, suggesting the LIA termination in alpine regions of central North America may have occurred on a relatively short (decadal) timescale. (c) 2000 American Geophysical Union.

  13. Energy Star program benefits Con Edison

    SciTech Connect (OSTI)

    NONE

    1995-05-01T23:59:59.000Z

    Impressed with savings in energy costs achieved after upgrading the lighting and air conditioning systems at its Manhattan headquarters, Home Box Office (HBO) wanted to do more, James Flock, vice president for computer and office systems, contacted Con Edison Co. of New York in March 1991 to determine what the company could do to save money by reducing energy consumed by personal computers. Arthur Kressner, Con Edison Research and Development manager contacted industry organizations and manufacturers for advice, but was told only to shut off computers at night and on weekends. Kressner arranged a series of meetings with IBM and the Electric Power Research Institute (EPRI) to discuss the issue, then approached the U.S. Environmental Protection Agency (EPA), which was designing a program to promote the introduction and use of energy-efficient office equipment. In 1992, the EPA announced the Energy Star program for PCs, enabling manufacturers to display the Energy Star logo on machines meeting program criteria, including the ability to enter a sleep mode in which neither the computer nor monitor consume more than 30 W or electricity. Industry experts estimate national energy consumption by office equipment could double by the year 2000, but Energy Star equipment is expected to improve efficiency and help maintain electric loads.

  14. Ly{alpha} RADIATIVE TRANSFER IN COSMOLOGICAL SIMULATIONS USING ADAPTIVE MESH REFINEMENT

    SciTech Connect (OSTI)

    Laursen, Peter [Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100, Copenhagen Oe (Denmark); Razoumov, Alexei O. [Institute for Computational Astrophysics, Department of Astronomy and Physics, Saint Mary's University, Halifax, NS, B3H3C3 (Canada); Sommer-Larsen, Jesper [Excellence Cluster Universe, Technische Universitaet Muenchen, Boltzmannstrasse 2, D-85748 Garching (Germany)], E-mail: pela@dark-cosmology.dk, E-mail: razoumov@ap.smu.ca, E-mail: jslarsen@astro.ku.dk

    2009-05-01T23:59:59.000Z

    A numerical code for solving various Ly{alpha} radiative transfer (RT) problems is presented. The code is suitable for an arbitrary, three-dimensional distribution of Ly{alpha} emissivity, gas temperature, density, and velocity field. Capable of handling Ly{alpha} RT in an adaptively refined grid-based structure, it enables detailed investigation of the effects of clumpiness of the interstellar (or intergalactic) medium. The code is tested against various geometrically and physically idealized configurations for which analytical solutions exist, and subsequently applied to three different simulated high-resolution 'Lyman-break galaxies', extracted from high-resolution cosmological simulations at redshift z = 3.6. Proper treatment of the Ly{alpha} scattering reveals a diversity of surface brightness (SB) and line profiles. Specifically, for a given galaxy the maximum observed SB can vary by an order of magnitude, and the total flux by a factor of 3-6, depending on the viewing angle. This may provide an explanation for differences in observed properties of high-redshift galaxies, and in particular a possible physical link between Lyman-break galaxies and regular Ly{alpha} emitters.

  15. Decontamination and decarburization of stainless and carbon steel by melt refining

    SciTech Connect (OSTI)

    Mizia, R.E.; Worcester, S.A.; Twidwell, L.G.; Webber, D.; Paolini, D.J.; Weldon, T.A.

    1996-09-05T23:59:59.000Z

    With many nuclear reactors and facilities being decommissioned in the next ten to twenty years the concern for handling and storing Radioactive Scrap Metal (RSM) is growing. Upon direction of the DOE Office of Environmental Restoration and Waste Management, Lockheed Idaho Technology Company (LITCO) is developing technologies for the conditioning of spent fuels and high-level wastes for interim storage and repository acceptance, including the recycling of Radioactive Scrap Metals (RSM) for beneficial reuse with the DOE complex. In February 1993, Montana Tech of the University of Montana was contracted to develop and demonstrate technologies for the decontamination of stainless steel RSM. The general objectives of the Montana Tech research program included conducting a literature survey, performing laboratory scale melt refining experiments to optimize decontaminating slag compositions, performing an analysis of preferred melting techniques, coordinating pilot scale and commercial scale demonstrations, and producing sufficient quantities of surrogate-containing material for all of the laboratory, pilot and commercial scale test programs. Later on, the program was expanded to include decontamination of carbon steel RSM. Each research program has been completed, and results are presented in this report.

  16. Technical support to the Solvent Refined Coal (SRC) demonstration projects: assessment of current research and development

    SciTech Connect (OSTI)

    Edwards, M.S.; Rodgers, B.R.; Brown, C.H.; Carlson, P.K.; Gambill, W.R.; Gilliam, T.M.; Holmes, J.M.; Krishnan, R.P.; Parsly, L.F.

    1980-12-01T23:59:59.000Z

    A program to demonstrate Solvent Refined Coal (SRC) technology has been initiated by the US Department of Energy (DOE) in partnership with two industrial groups. Project management responsibility has been assigned to the Oak Ridge Operations Office (ORO) of DOE. ORO requested that the Oak Ridge National Laboratory assess current research and development (R and D) activities and develop recommendations for those activities that might contribute to successful completion of the SRC demonstration plant projects. The objectives of this final report are to discuss in detail the problem areas in SRC; to discuss the current and planned R and D investigations relevant to the problems identified; and to suggest appropriate R and D activities in support of designs for the SRC demonstration plants. Four types of R and D activities are suggested: continuation of present and planned activities; coordination of activities and results, present and proposed; extension/redirection of activities not involving major equipment purchase or modifications; and new activities. Important examples of the first type of activity include continuation of fired heater, slurry rheology, and slurry mixing studies at Ft. Lewis. Among the second type of activity, coordination of data acquisition and interpretation is recommended in the areas of heat transfer, vapor/liquid equilibria, and physical properties. Principal examples of recommendations for extension/redirection include screening studies at laboratory scale on the use of carbonaceous precoat (e.g., anthracite) infiltration, and 15- to 30-day continuous tests of the Texaco gasifier at the Texaco Montebello facility (using SRC residues).

  17. Refining the associations of the Fermi Large Area Telescope Source Catalogs

    E-Print Network [OSTI]

    Massaro, F; Landoni, M; Paggi, A; Masetti, N; Giroletti, M; Otí-Floranes, H; Chavushyan, V; Jiménez-Bailón, E; Patiño-Álvarez, V; Digel, S W; Smith, Howard A; Tosti, G

    2015-01-01T23:59:59.000Z

    The Fermi-Large Area Telescope (LAT) First Source Catalog (1FGL) was released in February 2010 and the Fermi-LAT 2-Year Source Catalog (2FGL) appeared in April 2012, based on data from 24 months of operation. Since their releases, many follow up observations of unidentified gamma-ray sources (UGSs) were performed and new procedures to associate gamma-ray sources with potential counterparts at other wavelengths were developed. Here we review and characterize all the associations as published in the 1FGL and 2FGL catalog on the basis of multifrequency archival observations. In particular we located 177 spectra for the low-energy counterparts that were not listed in the previous Fermi catalogs, and in addition we present new spectroscopic observations of 8 gamma-ray blazar candidates. Based on our investigations, we introduce a new counterpart category of "candidate associations" and propose a refined classification for the candidate low-energy counterparts of the Fermi sources. We compare the 1FGL-assigned coun...

  18. Development of refined MCNPX-PARET multi-channel model for transient analysis in research reactors

    SciTech Connect (OSTI)

    Kalcheva, S.; Koonen, E. [SCK-CEN, BR2 Reactor Dept., Boeretang 200, 2400 Mol (Belgium); Olson, A. P. [RERTR Program, Nuclear Engineering Div., Argonne National Laboratory, Cass Avenue, Argonne, IL 60439 (United States)

    2012-07-01T23:59:59.000Z

    Reactivity insertion transients are often analyzed (RELAP, PARET) using a two-channel model, representing the hot assembly with specified power distribution and an average assembly representing the remainder of the core. For the analysis of protected by the reactor safety system transients and zero reactivity feedback coefficients this approximation proves to give adequate results. However, a more refined multi-channel model representing the various assemblies, coupled through the reactivity feedback effects to the whole reactor core is needed for the analysis of unprotected transients with excluded over power and period trips. In the present paper a detailed multi-channel PARET model has been developed which describes the reactor core in different clusters representing typical BR2 fuel assemblies. The distribution of power and reactivity feedback in each cluster of the reactor core is obtained from a best-estimate MCNPX calculation using the whole core geometry model of the BR2 reactor. The sensitivity of the reactor response to power, temperature and energy distributions is studied for protected and unprotected reactivity insertion transients, with zero and non-zero reactivity feedback coefficients. The detailed multi-channel model is compared vs. simplified fewer-channel models. The sensitivities of transient characteristics derived from the different models are tested on a few reactivity insertion transients with reactivity feedback from coolant temperature and density change. (authors)

  19. Refinement of a formula for decay after weak coherent excitation of a sphere

    SciTech Connect (OSTI)

    Friedberg, R., E-mail: rfriedberg1@nyc.rr.co [Barnard College, Columbia University, 452 Riverside Drive, New York, NY 10027 (United States)

    2010-02-15T23:59:59.000Z

    A new formula has been given recently by A.A. Svidzinsky and M.O. Scully to describe the temporal evolution of the excitation function beta(t,r{sup -}>) in a large sphere satisfying the Markov condition after excitation by a single photon. This formula is based on a physically reasonable Ansatz from which differential equations are inferred for the undetermined radial functions in the Ansatz. The solution to these differential equations leads to the formula for beta. Numerical calculations from this formula yield a value approx10% for the maximum probability of occupancy of secondary excited states. In this paper, we refine the formula of Svidzinsky and Scully by allowing the radial functions in the Ansatz to depend on the angular index l of the spherical Bessel functions. By using the Debye formula for the asymptotic behavior of j{sub l}(u) for large l as well as u, we obtain differential equations in each angular sector, similar to theirs but with a dependence on l. The solution to these equations yields our improved formula, from which we calculate 17.1% for the maximum probability of secondary excited states.

  20. Dynamic implicit 3D adaptive mesh refinement for non-equilibrium radiation diffusion

    SciTech Connect (OSTI)

    B. Philip; Z. Wang; M.A. Berrill; M. Birke; M. Pernice

    2014-04-01T23:59:59.000Z

    The time dependent non-equilibrium radiation diffusion equations are important for solving the transport of energy through radiation in optically thick regimes and find applications in several fields including astrophysics and inertial confinement fusion. The associated initial boundary value problems that are encountered often exhibit a wide range of scales in space and time and are extremely challenging to solve. To efficiently and accurately simulate these systems we describe our research on combining techniques that will also find use more broadly for long term time integration of nonlinear multi-physics systems: implicit time integration for efficient long term time integration of stiff multi-physics systems, local control theory based step size control to minimize the required global number of time steps while controlling accuracy, dynamic 3D adaptive mesh refinement (AMR) to minimize memory and computational costs, Jacobian Free Newton–Krylov methods on AMR grids for efficient nonlinear solution, and optimal multilevel preconditioner components that provide level independent solver convergence.

  1. Solvent Refined Coal (SRC) process. [Runs 49 to 57 and 59 to 62

    SciTech Connect (OSTI)

    None

    1980-10-01T23:59:59.000Z

    This report summarizes the progress of the Solvent Refined Coal (SRC) project for the period January 1, 1979 through December 31, 1979. The fourth quarter of 1979 is reported here in detail. Turnaround activities at the Fort Lewis SRC-II Pilot Plant were completed. During the shutdown, installation of Slurry Preheater B was completed. In addition, extensive modifications were completed to improve operability and slurry handling capabilities. The experimental program for testing Slurry Preheater B was revised to improve the data base for design scale-up considerations. Coal feed was established using Powhatan No. 6 coal. Twenty slurry survey tests were designed to establish the effects of varous slurry and heater inlet hydrogen flow rates on heat transfer, heater coil pressure drop, and heater operability. Additional tests were also added to the preheater evaluation program to study the effects of coal concentration, recycle pyridine insoluble concentration and preheater outlet temperatures. During 1979, PDU P-99 completed 13 runs (Runs 49 to 57 and 59 to 62). All these runs were made feeding coal from the Powhatan No. 5 Mine.

  2. Multigroup radiation hydrodynamics with flux-limited diffusion and adaptive mesh refinement

    E-Print Network [OSTI]

    González, Matthias; Commerçon, Benoît; Masson, Jacques

    2015-01-01T23:59:59.000Z

    Radiative transfer plays a key role in the star formation process. Due to a high computational cost, radiation-hydrodynamics simulations performed up to now have mainly been carried out in the grey approximation. In recent years, multi-frequency radiation-hydrodynamics models have started to emerge, in an attempt to better account for the large variations of opacities as a function of frequency. We wish to develop an efficient multigroup algorithm for the adaptive mesh refinement code RAMSES which is suited to heavy proto-stellar collapse calculations. Due to prohibitive timestep constraints of an explicit radiative transfer method, we constructed a time-implicit solver based on a stabilised bi-conjugate gradient algorithm, and implemented it in RAMSES under the flux-limited diffusion approximation. We present a series of tests which demonstrate the high performance of our scheme in dealing with frequency-dependent radiation-hydrodynamic flows. We also present a preliminary simulation of a three-dimensional p...

  3. Decontamination of metals by melt refinings/slagging: An annotated bibliography

    SciTech Connect (OSTI)

    Mizia, R.E. [ed.; Worcester, S.A.; Twidwell, L.G.; Paolini, D.J.; Weldon, T.A.

    1993-07-01T23:59:59.000Z

    As the number of nuclear installations undergoing decontamination and decommissioning (D&D) increases, current radioactive waste storage space is consumed and establishment of new waste storage areas becomes increasingly difficult, the problem of handling and storing radioactive scrap metal (RSM) gains increasing importance in the DOE Environmental Restoration and Waste Management Program. To alleviate present and future waste storage problems, Westinghouse Idaho Nuclear Company (WINCO) is managing a program for the recycling of RSM for beneficial use within the DOE complex. As part of that effort, Montana Tech has been awarded a contract to help optimize melting and refining technology for the recycling of stainless steel RSM. The scope of the Montana Tech program includes a literature survey, a decontaminating slag design study, small scale melting studies to determine optimum slag compositions for removal of radioactive contaminant surrogates, analysis of preferred melting techniques, and coordination of large scale melting demonstrations (100--500 lbs) to be conducted at selected facilities. The program will support recycling and decontaminating stainless steel RSM for use in waste canisters for Idaho Waste Immobilization Facility densified high level waste. This report is the result of the literature search conducted to establish a basis for experimental melt/slag program development.

  4. Technology status in support of refined technical baseline for the Spent Nuclear Fuel project. Revision 1

    SciTech Connect (OSTI)

    Puigh, R.J.; Toffer, H.; Heard, F.J.; Irvin, J.J.; Cooper, T.D.

    1995-10-20T23:59:59.000Z

    The Spent Nuclear Fuel Project (SNFP) has undertaken technology acquisition activities focused on supporting the technical basis for the removal of the N Reactor fuel from the K Basins to an interim storage facility. The purpose of these technology acquisition activities has been to identify technology issues impacting design or safety approval, to establish the strategy for obtaining the necessary information through either existing project activities, or the assignment of new work. A set of specific path options has been identified for each major action proposed for placing the N Reactor fuel into a ``stabilized`` form for interim storage as part of this refined technical basis. This report summarizes the status of technology information acquisition as it relates to key decisions impacting the selection of specific path options. The following specific categories were chosen to characterize and partition the technology information status: hydride issues and ignition, corrosion, hydrogen generation, drying and conditioning, thermal performance, criticality and materials accountability, canister/fuel particulate behavior, and MCO integrity. This report represents a preliminary assessment of the technology information supporting the SNFP. As our understanding of the N Reactor fuel performance develops the technology information supporting the SNFP will be updated and documented in later revisions to this report. Revision 1 represents the incorporation of peer review comments into the original document. The substantive evolution in our understanding of the technical status for the SNFP (except section 3) since July 1995 have not been incorporated into this revision.

  5. Microstructural refinement and enhanced transport properties in binary doped NdFeAsO superconductor

    SciTech Connect (OSTI)

    Aswathy, P. M.; Anooja, J. B.; Varghese, Neson; Syamaprasad, U., E-mail: syamcsir@gmail.com [National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019 (India)

    2014-02-07T23:59:59.000Z

    We report the synthesis of Nd{sub 1?x}Ca{sub x}FeAsO{sub 1?2x}F{sub 2x} superconductors using CaF{sub 2} as a binary dopant that provides both holes and electrons by simultaneous substitution of Ca{sup 2+} ions and F{sup ?} ions at Nd{sup 3+} and O{sup 2?} sites, respectively. The sample with x?=?0.2 exhibits a maximum critical temperature (T{sub C}) of 52.3?K and transport critical current density (J{sub C}) of 1240?A/cm{sup 2} at 12?K. An interesting feature observed for binary doped samples is the preferential alignment of (00l) planes and the refinement of microstructure both in terms of grain size and grain connectivity. NdFeAsO based superconductors are already known for their very high critical fields and field independent J{sub C}(H) performance. However, the development of the bulk superconductors with oriented large grains and good grain connectivity has not been reported so far and hence the present work will be definitely a step towards the progress in NdFeAsO based conductor development.

  6. Exploratory research on solvent refined coal liquefaction. Annual technical progress report, January 1-December 31, 1979

    SciTech Connect (OSTI)

    None

    1980-09-01T23:59:59.000Z

    This report summarizes the progress of the Exploratory Research on Solvent Refined Coal Liquefaction project by The Pittsburg and Midway Coal Mining Co.'s Merriam Laboratory during 1979. In a series of experiments with varying feed gas composition, low levels (5 to 10 mole %) of carbon monoxide had little effect on the SRC II processing of Pittsburgh Seam coal (Powhatan No. 5 Mine) while higher levels (20 to 40 mole %) resulted in a general degradation of operability and reduced oil yields. Addition of finely divided (approx. 1 ..mu..m) pyrite to the reactive Powhatan coal had little effect on oil yields although the molecular weight of the distillation residue was apparently decreased. When finely divided pyrite and magnetite were added to the less reactive coals from the Loveridge and Blacksville No. 1 Mines (also Pittsburgh Seam), however, substantial increases in oil yields and product quality were obtained. In a comparison of upflow and downflow dissolver configurations with Powhatan coal in the SRC II mode, there was no difference in yields or product quality. A study characterizing specific reactors revealed a significantly higher conversion in the SRC I mode with a reactor approximating plug flow conditions compared to a completely backmixed reactor. In the SRC II mode there was only a slightly higher oil yield with the plug flow reactor.

  7. Relativistic Hydrodynamic Flows Using Spatial and Temporal Adaptive Structured Mesh Refinement

    E-Print Network [OSTI]

    Peng Wang; Tom Abel; Weiqun Zhang

    2007-12-31T23:59:59.000Z

    Astrophysical relativistic flow problems require high resolution three-dimensional numerical simulations. In this paper, we describe a new parallel three-dimensional code for simulations of special relativistic hydrodynamics (SRHD) using both spatially and temporally structured adaptive mesh refinement (AMR). We used the method of lines to discretize the SRHD equations spatially and a total variation diminishing (TVD) Runge-Kutta scheme for time integration. For spatial reconstruction, we have implemented piecewise linear method (PLM), piecewise parabolic method (PPM), third order convex essentially non-oscillatory (CENO) and third and fifth order weighted essentially non-oscillatory (WENO) schemes. Flux is computed using either direct flux reconstruction or approximate Riemann solvers including HLL, modified Marquina flux, local Lax-Friedrichs flux formulas and HLLC. The AMR part of the code is built on top of the cosmological Eulerian AMR code {\\sl enzo}. We discuss the coupling of the AMR framework with the relativistic solvers. Via various test problems, we emphasize the importance of resolution studies in relativistic flow simulations because extremely high resolution is required especially when shear flows are present in the problem. We also present the results of two 3d simulations of astrophysical jets: AGN jets and GRB jets. Resolution study of those two cases further highlights the need of high resolutions to calculate accurately relativistic flow problems.

  8. Startup due for multi-national Gulf DRB demonstration. [Donor Refined Bitumen

    SciTech Connect (OSTI)

    Not Available

    1986-09-01T23:59:59.000Z

    October is the scheduled start-up date for a 450 barrels per day demonstration of the Gulf Donor Refined Bitumen (DRB) process in France. The project will be carried out by a joint venture consisting of Gulf Canada, Alberta Oil Sands Technology and Research Authority, and ASVAHL, a joint venture of three French companies. The Gulf DRB process is a liquid phase hydrocracking process in which hydrogen is made available from a donor rather than as high pressure gaseous hydrogen. Donor liquid is circulated between the feed cracking step and a re-hydrogenation step. The donor is a distillate stream containing substituted tetralins. It is derived from the feedstock in sufficient quantity for the process to be self-sufficient in donor. The DRB process is expected to perform with high reliability because of the simplicity of the process, operation at moderate pressure (800 psi), and the use of uncomplicated off-the-shelf equipment. The process and demonstration plant are described.

  9. Dimensional reduction as a tool for mesh refinement and trackingsingularities of PDEs

    SciTech Connect (OSTI)

    Stinis, Panagiotis

    2007-06-10T23:59:59.000Z

    We present a collection of algorithms which utilizedimensional reduction to perform mesh refinement and study possiblysingular solutions of time-dependent partial differential equations. Thealgorithms are inspired by constructions used in statistical mechanics toevaluate the properties of a system near a critical point. The firstalgorithm allows the accurate determination of the time of occurrence ofa possible singularity. The second algorithm is an adaptive meshrefinement scheme which can be used to approach efficiently the possiblesingularity. Finally, the third algorithm uses the second algorithm untilthe available resolution is exhausted (as we approach the possiblesingularity) and then switches to a dimensionally reduced model which,when accurate, can follow faithfully the solution beyond the time ofoccurrence of the purported singularity. An accurate dimensionallyreduced model should dissipate energy at the right rate. We construct twovariants of each algorithm. The first variant assumes that we have actualknowledge of the reduced model. The second variant assumes that we knowthe form of the reduced model, i.e., the terms appearing in the reducedmodel, but not necessarily their coefficients. In this case, we alsoprovide a way of determining the coefficients. We present numericalresults for the Burgers equation with zero and nonzero viscosity toillustrate the use of the algorithms.

  10. A Predictive Model of Fragmentation using Adaptive Mesh Refinement and a Hierarchical Material Model

    SciTech Connect (OSTI)

    Koniges, A E; Masters, N D; Fisher, A C; Anderson, R W; Eder, D C; Benson, D; Kaiser, T B; Gunney, B T; Wang, P; Maddox, B R; Hansen, J F; Kalantar, D H; Dixit, P; Jarmakani, H; Meyers, M A

    2009-03-03T23:59:59.000Z

    Fragmentation is a fundamental material process that naturally spans spatial scales from microscopic to macroscopic. We developed a mathematical framework using an innovative combination of hierarchical material modeling (HMM) and adaptive mesh refinement (AMR) to connect the continuum to microstructural regimes. This framework has been implemented in a new multi-physics, multi-scale, 3D simulation code, NIF ALE-AMR. New multi-material volume fraction and interface reconstruction algorithms were developed for this new code, which is leading the world effort in hydrodynamic simulations that combine AMR with ALE (Arbitrary Lagrangian-Eulerian) techniques. The interface reconstruction algorithm is also used to produce fragments following material failure. In general, the material strength and failure models have history vector components that must be advected along with other properties of the mesh during remap stage of the ALE hydrodynamics. The fragmentation models are validated against an electromagnetically driven expanding ring experiment and dedicated laser-based fragmentation experiments conducted at the Jupiter Laser Facility. As part of the exit plan, the NIF ALE-AMR code was applied to a number of fragmentation problems of interest to the National Ignition Facility (NIF). One example shows the added benefit of multi-material ALE-AMR that relaxes the requirement that material boundaries must be along mesh boundaries.

  11. Refinement, Validation and Application of Cloud-Radiation Parameterization in a GCM

    SciTech Connect (OSTI)

    Dr. Graeme L. Stephens

    2009-04-30T23:59:59.000Z

    The research performed under this award was conducted along 3 related fronts: (1) Refinement and assessment of parameterizations of sub-grid scale radiative transport in GCMs. (2) Diagnostic studies that use ARM observations of clouds and convection in an effort to understand the effects of moist convection on its environment, including how convection influences clouds and radiation. This aspect focuses on developing and testing methodologies designed to use ARM data more effectively for use in atmospheric models, both at the cloud resolving model scale and the global climate model scale. (3) Use (1) and (2) in combination with both models and observations of varying complexity to study key radiation feedback Our work toward these objectives thus involved three corresponding efforts. First, novel diagnostic techniques were developed and applied to ARM observations to understand and characterize the effects of moist convection on the dynamical and thermodynamical environment in which it occurs. Second, an in house GCM radiative transfer algorithm (BUGSrad) was employed along with an optimal estimation cloud retrieval algorithm to evaluate the ability to reproduce cloudy-sky radiative flux observations. Assessments using a range of GCMs with various moist convective parameterizations to evaluate the fidelity with which the parameterizations reproduce key observable features of the environment were also started in the final year of this award. The third study area involved the study of cloud radiation feedbacks and we examined these in both cloud resolving and global climate models.

  12. Proposal for the award of an industrial service contract for stores operations and relatedlogistics, in-house mail distribution and transport services on the CERN site

    E-Print Network [OSTI]

    2006-01-01T23:59:59.000Z

    This document concerns the award of an industrial support contract for stores operations and related logistics, in-house mail distribution and transport services on the CERN site. The Finance Committee is invited to agree to the negotiation of a contract with the consortium ISS (CH) - ISS (ES), for stores operations and related logistics, in-house mail distribution and transport services on the CERN site for a period of three years for a total amount not exceeding 10 312 028 Swiss francs not subject to revision. The contract will include options for two one-year extensions beyond the initial three-year period.

  13. Compliance of the CERN electronics used by the LHC Cryogenic System with the Electromagnetic Compatibility (EMC) Norm IEC 61000 4-4

    E-Print Network [OSTI]

    Casas, J

    2011-01-01T23:59:59.000Z

    Within the ITER-CERN collaboration agreement, task “PROCUREMENT OF CRYOGENIC THERMOMETERS TO MONITOR ITER MAGNETS AND FEEDER TEMPERATURES”, CERN is recommending the use by ITER of LHC like electronics for the temperature channels. ITER require that any electronic equipment shall be qualified according to the standard IEC 61000 4-4 that refers to the Electromagnetic compatibility (EMC), Part 4: Testing and measurement techniques, Section 4: Electrical fast transient/burst immunity test (EFT/B). This document describes the qualification procedure and the results for the LHC like temperature measurement chains according to the procedures described in the standard.

  14. Projections of the impact of expansion of domestic heavy oil production on the U.S. refining industry from 1990 to 2010. Topical report

    SciTech Connect (OSTI)

    Olsen, D.K.; Ramzel, E.B.; Strycker, A.R. [National Institute for Petroleum and Energy Research, Bartlesville, OK (United States). ITT Research Institute] [National Institute for Petroleum and Energy Research, Bartlesville, OK (United States). ITT Research Institute; Guariguata, G.; Salmen, F.G. [Bonner and Moore Management Science, Houston, TX (United States)] [Bonner and Moore Management Science, Houston, TX (United States)

    1994-12-01T23:59:59.000Z

    This report is one of a series of publications assessing the feasibility of increasing domestic heavy oil (10{degrees} to 20{degrees} API gravity) production. This report provides a compendium of the United States refining industry and analyzes the industry by Petroleum Administration for Defense District (PADD) and by ten smaller refining areas. The refining capacity, oil source and oil quality are analyzed, and projections are made for the U.S. refining industry for the years 1990 to 2010. The study used publicly available data as background. A linear program model of the U.S. refining industry was constructed and validated using 1990 U.S. refinery performance. Projections of domestic oil production (decline) and import of crude oil (increases) were balanced to meet anticipated demand to establish a base case for years 1990 through 2010. The impact of additional domestic heavy oil production, (300 MB/D to 900 MB/D, originating in select areas of the U.S.) on the U.S. refining complex was evaluated. This heavy oil could reduce the import rate and the balance of payments by displacing some imported, principally Mid-east, medium crude. The construction cost for refining units to accommodate this additional domestic heavy oil production in both the low and high volume scenarios is about 7 billion dollars for bottoms conversion capacity (delayed coking) with about 50% of the cost attributed to compliance with the Clean Air Act Amendment of 1990.

  15. Solvent refined coal (SRC) process. Quarterly technical progress report, January 1980-March 1980. [In process streams

    SciTech Connect (OSTI)

    Not Available

    1981-01-01T23:59:59.000Z

    This report summarizes the progress of the Solvent Refined Coal (SRC) project at the SRC Pilot Plant in Fort Lewis, Wahsington, and the Process Development Unit (P-99) in Harmarville, Pennsylvania. After the remaining runs of the slurry preheater survey test program were completed January 14, the Fort Lewis Pilot Plant was shut down to inspect Slurry Preheater B and to insulate the coil for future testing at higher rates of heat flux. Radiographic inspection of the coil showed that the welds at the pressure taps and the immersion thermowells did not meet design specifications. Slurry Preheater A was used during the first 12 days of February while weld repairs and modifications to Slurry Preheater B were completed. Two attempts to complete a material balance run on Powhatan No. 6 Mine coal were attempted but neither was successful. Slurry Preheater B was in service the remainder of the quarter. The start of a series of runs at higher heat flux was delayed because of plugging in both the slurry and the hydrogen flow metering systems. Three baseline runs and three slurry runs of the high heat flux program were completed before the plant was shut down March 12 for repair of the Inert Gas Unit. Attempts to complete a fourth slurry run at high heat flux were unsuccessful because of problems with the coal feed handling and the vortex mix systems. Process Development Unit (P-99) completed three of the four runs designed to study the effect of dissolver L/D ratio. The fourth was under way at the end of the period. SRC yield correlations have been developed that include coal properties as independent variables. A preliminary ranking of coals according to their reactivity in PDU P-99 has been made. Techniques for studying coking phenomenona are now in place.

  16. El teatro como reflexión colectiva: Conversación con Sergio Corrieri

    E-Print Network [OSTI]

    Luzuriaga, Gerardo

    1983-04-01T23:59:59.000Z

    azarosa. Y aun así y todo, para poder lograr una entrada mínima que les permitiera subsistir apenas, pues tenían que recurrir a un repertorio comercial, vodevilesco, en base a chistes verdes. En fin, sin ningún propósito cultural ni social. Algunos... poner en Cuba algún clásico, la vanguardia francesa, las obras de Anouilh, el Ionesco de aquel entonces, con una resonancia social paupérrima, es decir un público bien escaso. Además de esto, un teatro universitario con una función muy académica, con...

  17. aleatorizado con una: Topics by E-print Network

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

    estremamente variabili. La complessit, (more) MILAZZO, ROSARIO 2014-01-01 365 Operaciones de conjuntos con Fas Dr. Luis A. Pineda Computer Technologies and Information...

  18. alimentados con complementos: Topics by E-print Network

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

    Theses and Dissertations Summary: ??Benavides Tamayo , Helman Enrique (2013) Protocolo de investigacion: Prevalencia de tuberculosis latente en pacientes con diabetes mellitus en...

  19. adicionados con una: Topics by E-print Network

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

    estremamente variabili. La complessit, (more) MILAZZO, ROSARIO 2014-01-01 364 Operaciones de conjuntos con Fas Dr. Luis A. Pineda Computer Technologies and Information...

  20. alimentados con una: Topics by E-print Network

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

    estremamente variabili. La complessit, (more) MILAZZO, ROSARIO 2014-01-01 365 Operaciones de conjuntos con Fas Dr. Luis A. Pineda Computer Technologies and Information...

  1. alimentos fortificados con: Topics by E-print Network

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

    Theses and Dissertations Summary: ??Benavides Tamayo , Helman Enrique (2013) Protocolo de investigacion: Prevalencia de tuberculosis latente en pacientes con diabetes mellitus en...

  2. asociada con factores: Topics by E-print Network

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

    Asked Questions ? Do government buildings qualify for the C&I Program? ? State, County, and local government...1 Con Edison Commercial and Industrial Energy Efficiency...

  3. area visual con: Topics by E-print Network

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

    Fernndez de Crdoba, Pedro 8 ConMan: A Visual Programming Language for Interactive Graphics CiteSeer Summary: Traditionally, interactive applications have been difficult to...

  4. adolescentes con fobia: Topics by E-print Network

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

    Gilbes Santaella Departamento EN LA TIERRA 12;HIDROELECTRICIDAD Es una fuente de energia renovable con la cual se genera electricidad de fuentes renovables (estimado del 2005)....

  5. acuosas con agarosa: Topics by E-print Network

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

    Gilbes Santaella Departamento EN LA TIERRA 12;HIDROELECTRICIDAD Es una fuente de energia renovable con la cual se genera electricidad de fuentes renovables (estimado del 2005)....

  6. adicionales con implicaciones: Topics by E-print Network

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

    Britannica Online Discovery Streaming Topic Comparison ProCon.org CiteSeer Summary: aka proscons "We promote critical thinking, education, and informed citizenship by presenting...

  7. Nucleon partonic spin structure to be explored by the unpolarized Drell-Yan program of COMPASS experiment at CERN

    E-Print Network [OSTI]

    Wen-Chen Chang

    2015-01-12T23:59:59.000Z

    The observation of the violation of Lam-Tung relation in the $\\pi N$ Drell-Yan process triggered many theoretical speculations. The TMD Boer-Mulders functions characterizing the correlation of transverse momentum and transverse spin for partons in unpolarized hadrons could nicely account for the violation. The COMPASS experiment at CERN will measure the angular distributions of dimuons from the unpolarized Drell-Yan process over a wide kinematic region and study the beam particle dependence. Significant statistics is expected from a successful run in 2015 which will bring further understanding of the origin of the violation of Lam-Tung relation and of the partonic transverse spin structure of the nucleon.

  8. Nucleon partonic spin structure to be explored by the unpolarized Drell-Yan program of COMPASS experiment at CERN

    E-Print Network [OSTI]

    Chang, Wen-Chen

    2015-01-01T23:59:59.000Z

    The observation of the violation of Lam-Tung relation in the $\\pi N$ Drell-Yan process triggered many theoretical speculations. The TMD Boer-Mulders functions characterizing the correlation of transverse momentum and transverse spin for partons in unpolarized hadrons could nicely account for the violation. The COMPASS experiment at CERN will measure the angular distributions of dimuons from the unpolarized Drell-Yan process over a wide kinematic region and study the beam particle dependence. Significant statistics is expected from a successful run in 2015 which will bring further understanding of the origin of the violation of Lam-Tung relation and of the partonic transverse spin structure of the nucleon.

  9. Charmonium production in proton-proton collisions and in collisions of lead nuclei at CERN and comparison with Brookhaven data

    SciTech Connect (OSTI)

    Topilskaya, N. S., E-mail: topilska@inr.ru [Russian Academy of Sciences, Institute for Nuclear Research (Russian Federation)

    2013-10-15T23:59:59.000Z

    A review of experimental data on charmoniumproduction that were obtained in fixed-target experiments at the SPS synchrotron and in proton-proton collisions and in collisions of lead nuclei in beams of the Large Hadron Collider (LHC) at CERN (Switzerland) is presented. A comparison with data obtained at the Brookhaven National Laboratory (USA) from experiments at the Relativistic Heavy Ion Collider (RHIC) is performed. Measurement of the suppression of J/{psi}-meson production as a possible signal of the production of quark-gluon plasmawas proposed back in 1986 by T. Matsui and H. Satz. An anomalous suppression of J/{psi}-meson production was discovered by the NA50 Collaboration at SPS (CERN) in central collisions of lead nuclei at the c.m. collision energy of 158 GeV per nucleon. Data obtained at the c.m. energy of 200 GeV per nucleon in the PHENIX experiment at RHIC indicate that, depending on multiplicity, the suppression of J/{psi}-meson production at this energy approximately corresponds to the suppression of J/{psi}-meson production in collisions of lead nuclei at the SPS accelerator. Theoretical models that take into account the regeneration of J/{psi} mesons describe better RHIC experimental data. The measurement of charmonium production in proton-proton collisions and in collisions of lead nuclei in LHC beams revealed the importance of taking into account the regeneration process. At the LHC energies, it is also necessary to take into account the contribution of B-meson decays. Future measurements of charmonium production at the LHC to a higher statistical precision and over an extended energy region would be of importance for obtaining deeper insight into the mechanism of charmonium production and for studying the properties of matter at high energy density and temperature.

  10. TESTING GROUND BASED GEOPHYSICAL TECHNIQUES TO REFINE ELECTROMAGNETIC SURVEYS NORTH OF THE 300 AREA HANFORD WASHINGTON

    SciTech Connect (OSTI)

    PETERSEN SW

    2010-12-02T23:59:59.000Z

    Airborne electromagnetic (AEM) surveys were flown during fiscal year (FY) 2008 within the 600 Area in an attempt to characterize the underlying subsurface and to aid in the closure and remediation design study goals for the 200-PO-1 Groundwater Operable Unit (OU). The rationale for using the AEM surveys was that airborne surveys can cover large areas rapidly at relatively low costs with minimal cultural impact, and observed geo-electrical anomalies could be correlated with important subsurface geologic and hydrogeologic features. Initial interpretation of the AEM surveys indicated a tenuous correlation with the underlying geology, from which several anomalous zones likely associated with channels/erosional features incised into the Ringold units were identified near the River Corridor. Preliminary modeling resulted in a slightly improved correlation but revealed that more information was required to constrain the modeling (SGW-39674, Airborne Electromagnetic Survey Report, 200-PO-1 Groundwater Operable Unit, 600 Area, Hanford Site). Both time-and frequency domain AEM surveys were collected with the densest coverage occurring adjacent to the Columbia River Corridor. Time domain surveys targeted deeper subsurface features (e.g., top-of-basalt) and were acquired using the HeliGEOTEM{reg_sign} system along north-south flight lines with a nominal 400 m (1,312 ft) spacing. The frequency domain RESOLVE system acquired electromagnetic (EM) data along tighter spaced (100 m [328 ft] and 200 m [656 ft]) north-south profiles in the eastern fifth of the 200-PO-1 Groundwater OU (immediately adjacent to the River Corridor). The overall goal of this study is to provide further quantification of the AEM survey results, using ground based geophysical methods, and to link results to the underlying geology and/or hydrogeology. Specific goals of this project are as follows: (1) Test ground based geophysical techniques for the efficacy in delineating underlying geology; (2) Use ground measurements to refine interpretations of AEM data; and (3) Improve the calibration and correlation of AEM information. The potential benefits of this project are as follows: (1) Develop a tool to map subsurface units at the Hanford Site in a rapid and cost effective manner; (2) Map groundwater pathways within the River Corridor; and (3) Aid development of the conceptual site model. If anomalies observed in the AEM data can be correlated with subsurface geology, then the rapid scanning and non-intrusive capabilities provided by the airborne surveys can be used at the Hanford Site to screen for areas that warrant further investigation.

  11. State of competition in gasoline marketing. The effects of refiner operation at retail (a study required by Title III of the Petroleum Marketing Practices Act)

    SciTech Connect (OSTI)

    Delaney, J.B.; Fenili, R.N.

    1980-05-01T23:59:59.000Z

    Title III of the Petroleum Marketing Practices Act requires the Secretary of Energy to report to the Congress on the extent to which producers, refiners, and other suppliers of motor fuel subsidize the sale of such fuel at retail or wholesale with profits obtained from other operations. This is Part I of the report required under that Title. It addresses a number of questions relating to the central issue - the state of competition in the gasoline marketing industry. Part II of the report, to be issued this fall, will discuss the subpoenaed documents of nine integrated companies, and will contain recommendations for action, if deemed necessary. The basic thrust of Part I is an examination of three issues: (1) Are integrated refiners subsidizing their company operated gasoline retail outlets; (2) Are integrated refiners moving gasoline away from their branded dealer network into their own retail outlets; and (3) Are integrated refiners manipulating the allocation system in favor of their own retail outlets to the detriment of other gasoline marketers. At a series of regional hearings, independent marketers charged that integrated refiners were engaging in each of these practices. In essence, integrated refiners were portrayed as using unfair or illegal competitive practices which would ultimately lead to their domination of retail gasoline markets. This report addresses each allegation, after providing a historical and theoretical framework for today's debate.

  12. October 6, 1997 ITER L-Mode Con nement Database

    E-Print Network [OSTI]

    October 6, 1997 ITER L-Mode Con nement Database S.M. Kaye and the ITER Con nement Database Working Group Abstract This paper describes the content of an L-mode database that has been compiled with data, and Tore-Supra. The database consists of a total of 2938 entries, 1881 of which are in the L-phase while

  13. Clustering Iterativo de Textos Cortos con Representaciones basadas en Conceptos

    E-Print Network [OSTI]

    Rosso, Paolo

    Clustering Iterativo de Textos Cortos con Representaciones basadas en Conceptos Iterative enfoque utilizando representaciones de documentos enriquecidas con informaci´on sem´antica (conceptos´on sea f´acil- mente interpretada y utilizada de manera efectiva (categorizaci´on, clustering y sistemas

  14. REFINEMENT OF THE NEPHELINE DISCRIMINATOR: RESULTS OF A PHASE I STUDY

    SciTech Connect (OSTI)

    Fox, K; James Newell, J; Tommy Edwards, T; David Best, D; Irene Reamer, I; Phyllis Workman, P

    2008-02-13T23:59:59.000Z

    The performance of a glass used for immobilization of high-level nuclear waste (HLW) is generally quantified by its resistance to chemical degradation, or durability. The durability of a HLW glass is dependent on its composition. If crystalline phases form within a glass during cooling, the composition of the residual glass network is altered, therefore affecting the durability of the glass. Crystallization of nepheline (NaAlSiO{sub 4}) has been shown to adversely impact the durability of HLW glasses since it removes glass forming species (in this case, Al and Si) from the glass network. The propensity for nepheline crystallization in a HLW glass increases with increasing concentrations of Al{sub 2}O{sub 3} and Na{sub 2}O in the glass. Nepheline crystallization is therefore of concern for processing of HLW at the Defense Waste Processing Facility (DWPF) since the sludge waste streams at the Savannah River Site (SRS) can contain high concentrations of Al{sub 2}O{sub 3} and Na{sub 2}O. Currently, a 'nepheline discriminator' is included as a process control constraint at the DWPF. The nepheline discriminator relates the concentrations of SiO{sub 2}, Na{sub 2}O and Al{sub 2}O{sub 3} (as weight percentages in glass) to a critical value of 0.62. The discriminator defines a boundary line on the SiO{sub 2}-Na{sub 2}O-Al{sub 2}O{sub 3} ternary diagram above which (or toward the SiO{sub 2} corner of the ternary) nepheline is not predicted to crystallize in the glass upon quenching or slow cooling. The current equation uses only the concentrations of the SiO{sub 2}, Na{sub 2}O and Al{sub 2}O{sub 3} components in the glass in predicting whether or not nepheline is likely to crystallize. However, several other components have been shown to impact the propensity for nepheline crystallization, including B{sub 2}O{sub 3} and CaO among others. Therefore, the potential exists to further refine the nepheline discriminator to include these components. In addition, recently studied HLW glasses with relatively high Al{sub 2}O{sub 3} compositions of 25 wt % or greater and nepheline discriminator values well below 0.62 have been shown to be free of nepheline crystallization upon quenching and slow cooling. Thus, the current nepheline discriminator equation also appears to be conservative for some HLW glass compositions. Refining the nepheline discriminator to include other important components and to reduce conservatism may provide access to high Al{sub 2}O{sub 3} concentration glass compositions for the DWPF, which could in turn allow access to higher waste loadings, decreased washing and improved waste throughput. The objective of this study was to develop and characterize a series of HLW glass compositions based on a projected composition of Sludge Batch 5 (SB5), the next sludge batch to be processed in the DWPF. The selected glass compositions all had nepheline discriminator values below the current limit of 0.62. They cover a range of locations on the SiO{sub 2}-Na{sub 2}O-Al{sub 2}O{sub 3} diagram. They also include varying amounts of B{sub 2}O{sub 3} and CaO to support an evaluation of the impact of these components on the propensity for nepheline crystallization. The results described in this report confirm that some conservatism exists in the current nepheline discriminator. Several glass compositions, particularly compositions that target higher Al{sub 2}O{sub 3} concentrations, were shown to be very durable (i.e., PCT responses that were more than an order of magnitude better than that of the Environmental Assessment benchmark glass) while their nepheline discriminator values were well below the current nepheline discriminator limit of 0.62. Increased concentrations of B{sub 2}O{sub 3} and increased concentrations of CaO were shown to improve durability responses and suppress the formation of nepheline. This provides incentive to revise the nepheline discriminator to reduce some of this conservatism and incorporate the influence of B{sub 2}O{sub 3}. The revised nepheline discriminator could potentially change from a constant line on

  15. Liver segmentation in contrast enhanced CT data using graph cuts and interactive 3D segmentation refinement methods

    SciTech Connect (OSTI)

    Beichel, Reinhard; Bornik, Alexander; Bauer, Christian; Sorantin, Erich [Departments of Electrical and Computer Engineering and Internal Medicine, Iowa Institute for Biomedical Imaging, University of Iowa, Iowa City, Iowa 52242 (United States); Institute for Computer Graphics and Vision, Graz University of Technology, Inffeldgasse 16, A-8010 Graz (Austria); Department of Electrical and Computer Engineering, Iowa Institute for Biomedical Imaging, University of Iowa, Iowa City, Iowa 52242 (United States); Department of Radiology, Medical University Graz, Auenbruggerplatz 34, A-8010 Graz (Austria)

    2012-03-15T23:59:59.000Z

    Purpose: Liver segmentation is an important prerequisite for the assessment of liver cancer treatment options like tumor resection, image-guided radiation therapy (IGRT), radiofrequency ablation, etc. The purpose of this work was to evaluate a new approach for liver segmentation. Methods: A graph cuts segmentation method was combined with a three-dimensional virtual reality based segmentation refinement approach. The developed interactive segmentation system allowed the user to manipulate volume chunks and/or surfaces instead of 2D contours in cross-sectional images (i.e, slice-by-slice). The method was evaluated on twenty routinely acquired portal-phase contrast enhanced multislice computed tomography (CT) data sets. An independent reference was generated by utilizing a currently clinically utilized slice-by-slice segmentation method. After 1 h of introduction to the developed segmentation system, three experts were asked to segment all twenty data sets with the proposed method. Results: Compared to the independent standard, the relative volumetric segmentation overlap error averaged over all three experts and all twenty data sets was 3.74%. Liver segmentation required on average 16 min of user interaction per case. The calculated relative volumetric overlap errors were not found to be significantly different [analysis of variance (ANOVA) test, p = 0.82] between experts who utilized the proposed 3D system. In contrast, the time required by each expert for segmentation was found to be significantly different (ANOVA test, p = 0.0009). Major differences between generated segmentations and independent references were observed in areas were vessels enter or leave the liver and no accepted criteria for defining liver boundaries exist. In comparison, slice-by-slice based generation of the independent standard utilizing a live wire tool took 70.1 min on average. A standard 2D segmentation refinement approach applied to all twenty data sets required on average 38.2 min of user interaction and resulted in statistically not significantly different segmentation error indices (ANOVA test, significance level of 0.05). Conclusions: All three experts were able to produce liver segmentations with low error rates. User interaction time savings of up to 71% compared to a 2D refinement approach demonstrate the utility and potential of our approach. The system offers a range of different tools to manipulate segmentation results, and some users might benefit from a longer learning phase to develop efficient segmentation refinement strategies. The presented approach represents a generally applicable segmentation approach that can be applied to many medical image segmentation problems.

  16. A study of solvent refining of cottonseed oil by use of a rotating core countercurrent extraction column

    E-Print Network [OSTI]

    Holbrook, Charles Ray

    1953-01-01T23:59:59.000Z

    -oleic acid and solvent solutions were added. The mixture was shaken several times and placed 1n a 30 C . atmosphere to reach thermal equilibrium and for the layers to break. The following data were observed for each phase: l Relative volume 2...A STUDY OF SOLVENT REFINING OF COTTONSEED OIL BY USE OF A ROTATING CORE COUNTERCURRENT EXTRACTION COLUMN A Thes1s by C. Ray Holbrook January- 1953 Approved as to style and content: aS a rman o u en s omm ee ea o epar men em ca -ng neer ng...

  17. ,"U.S. Sales for Resale Refiner Residual Fuel Oil and No. 4 Fuel Sales Volumes"

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghurajiConventional Gasoline Sales toReformulated, Average Refiner Gasoline Prices"

  18. ,"U.S. Sales to End Users Refiner Residual Fuel Oil and No. 4 Fuel Sales Volumes"

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghurajiConventional Gasoline Sales toReformulated, Average Refiner Gasoline Prices"Sales

  19. Study on Evaluation of Project Management Data for Decommissioning of Uranium Refining and Conversion Plant - 12234

    SciTech Connect (OSTI)

    Usui, Hideo; Izumo, Sari; Tachibana, Mitsuo [Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki, 319-1195 (Japan); Shibahara, Yuji [Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki, 319-1195 (Japan); University of Fukui, Fukui-shi, Fukui, 910-8507 (Japan); Morimoto, Yasuyuki; Tokuyasu, Takashi; Takahashi, Nobuo; Tanaka, Yoshio; Sugitsue, Noritake [Japan Atomic Energy Agency, Kagamino-cho, Tomata-gun, Okayama, 708-0698 (Japan)

    2012-07-01T23:59:59.000Z

    Some of nuclear facilities that would no longer be required have been decommissioned in JAEA (Japan Atomic Energy Agency). A lot of nuclear facilities have to be decommissioned in JAEA in near future. To implement decommissioning of nuclear facilities, it was important to make a rational decommissioning plan. Therefore, project management data evaluation system for dismantling activities (PRODIA code) has been developed, and will be useful for making a detailed decommissioning plan for an object facility. Dismantling of dry conversion facility in the uranium refining and conversion plant (URCP) at Ningyo-toge began in 2008. During dismantling activities, project management data such as manpower and amount of waste generation have been collected. Such collected project management data has been evaluated and used to establish a calculation formula to calculate manpower for dismantling equipment of chemical process and calculate manpower for using a green house (GH) which was a temporary structure for preventing the spread of contaminants during dismantling. In the calculation formula to calculate project management data related to dismantling of equipment, the relation of dismantling manpower to each piece of equipment was evaluated. Furthermore, the relation of dismantling manpower to each chemical process was evaluated. The results showed promise for evaluating dismantling manpower with respect to each chemical process. In the calculation formula to calculate project management data related to use of the GH, relations of GH installation manpower and removal manpower to GH footprint were evaluated. Furthermore, the calculation formula for secondary waste generation was established. In this study, project management data related to dismantling of equipment and use of the GH were evaluated and analyzed. The project management data, manpower for dismantling of equipment, manpower for installation and removal of GH, and secondary waste generation from GH were considered. Establishment of the calculation formula for dismantling of each kind of equipment makes it possible to evaluate manpower for dismantling the whole facility. However, it is not easy to prepare calculation formula for all kinds of equipment that exist in the facility. Therefore, a simpler evaluation method was considered to calculate manpower based on facility characteristics. The results showed promise for evaluating dismantling manpower with respect to each chemical process. For dismantling of contaminated equipment, a GH has been used for protection of the spread of contamination. The use of a GH increases manpower for installation and removal of GH etc. Moreover, structural materials of the GH such as plastic sheets, adhesive tape become a burnable secondary waste. To create an effective dismantling plan, it is necessary to carefully consider use of a GH preliminarily. Thus, an evaluation method of project management data such as manpower and secondary waste generation was considered. The results showed promise for evaluating project management data of GH by using established calculation formula. (authors)

  20. COLLABORATIVE RESEARCH: CONTINUOUS DYNAMIC GRID ADAPTATION IN A GLOBAL ATMOSPHERIC MODEL: APPLICATION AND REFINEMENT

    SciTech Connect (OSTI)

    Gutowski, William J.; Prusa, Joseph M.; Smolarkiewicz, Piotr K.

    2012-05-08T23:59:59.000Z

    This project had goals of advancing the performance capabilities of the numerical general circulation model EULAG and using it to produce a fully operational atmospheric global climate model (AGCM) that can employ either static or dynamic grid stretching for targeted phenomena. The resulting AGCM combined EULAG's advanced dynamics core with the "physics" of the NCAR Community Atmospheric Model (CAM). Effort discussed below shows how we improved model performance and tested both EULAG and the coupled CAM-EULAG in several ways to demonstrate the grid stretching and ability to simulate very well a wide range of scales, that is, multi-scale capability. We leveraged our effort through interaction with an international EULAG community that has collectively developed new features and applications of EULAG, which we exploited for our own work summarized here. Overall, the work contributed to over 40 peer-reviewed publications and over 70 conference/workshop/seminar presentations, many of them invited. 3a. EULAG Advances EULAG is a non-hydrostatic, parallel computational model for all-scale geophysical flows. EULAG's name derives from its two computational options: EULerian (flux form) or semi-LAGrangian (advective form). The model combines nonoscillatory forward-in-time (NFT) numerical algorithms with a robust elliptic Krylov solver. A signature feature of EULAG is that it is formulated in generalized time-dependent curvilinear coordinates. In particular, this enables grid adaptivity. In total, these features give EULAG novel advantages over many existing dynamical cores. For EULAG itself, numerical advances included refining boundary conditions and filters for optimizing model performance in polar regions. We also added flexibility to the model's underlying formulation, allowing it to work with the pseudo-compressible equation set of Durran in addition to EULAG's standard anelastic formulation. Work in collaboration with others also extended the demonstrated range of validity of soundproof models, showing that they are more broadly applicable than some had previously thought. Substantial testing of EULAG included application and extension of the Jablonowski-Williamson baroclinic wave test - an archetype of planetary weather - and further analysis of multi-scale interactions arising from collapse of temperature fronts in both the baroclinic wave test and simulations of the Held-Suarez idealized climate. These analyses revealed properties of atmospheric gravity waves not seen in previous work and further demonstrated the ability of EULAG to simulate realistic behavior over several orders of magnitude of length scales. Additional collaborative work enhanced capability for modeling atmospheric flows with adaptive moving meshes and demonstrated the ability of EULAG to move into petascale computing. 3b. CAM-EULAG Advances We have developed CAM-EULAG in collaboration with former project postdoc, now University of Cape Town Assistant Professor, Babatunde Abiodun. Initial study documented good model performance in aqua-planet simulations. In particular, we showed that the grid adaptivity (stretching) implemented in CAM-EULAG allows higher resolution in selected regions without causing anomalous behavior such as spurious wave reflection. We then used the stretched-grid version to analyze simulated extreme precipitation events in West Africa, comparing the precipitation and event environment with observed behavior. The model simulates fairly well the spatial scale and the interannual and intraseasonal variability of the extreme events, although its extreme precipitation intensity is weaker than observed. In addition, both observations and the simulations show possible forcing of extreme events by African easterly waves. 3c. Other Contributions Through our collaborations, we have made contributions to a wide range of outcomes. For research focused on terrestrial behavior, these have included (1) upwind schemes for gas dynamics, (2) a nonlinear perspective on the dynamics of the Madden-Julian Oscillation, (3) numerical realism of thermal co