National Library of Energy BETA

Sample records for refiner con cerned

  1. Development and test of a rectangular CERN ConFlat-type flange

    E-Print Network [OSTI]

    Miarnau Marin, Ana; Veness, Raymond

    2015-01-01

    Standard circular ConFlat® (CF) flanges are widely used in industry due to their high sealing reliability after being subjected to a bakeout process. The Beam Gas Ionisation (BGI) instrument for the CERN Proton Synchrotron accelerator will require a CF-like rectangular sealing system. Although rectangular CF-type flanges with plastically deforming metal seals have been used, no published designs with validated tests for bakeout under UHV conditions are available. Existing circular CERN CF flanges were compared and a design for a rectangular CF flange was proposed. Two prototypes were manufactured along with copper gaskets. The flanges and gaskets were cleaned and prepared for extensive vacuum testing after bakeout cycles up to 350 °C. This paper summarises the design, analysis and manufacturing process and describes the testing procedures and results. Additionally, the limitations when designing a flange of any shape were explored.

  2. Rietveld Refinement

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

    profile Chi-squared value 4.944 Progress so far Inverse Modeling Method 2 Fourier Method Data Model Refined Structure 40 60 80 100 120 140 160 0 1000 2000 3000 4000...

  3. Worldwide refining

    SciTech Connect (OSTI)

    NONE

    1995-12-18

    Data are presented on refining capacity by country and by company within each country. Capacity data are divided into the following processes: vacuum distillation, thermal operations, catalytic cracking, catalytic reforming, catalytic hydrocracking, catalytic hydrorefining, and catalytic hydrotreating. Production capacity is divided into: alkylation/polymerization/dimerization; aromatics/isomerization; lubricants; oxygenates; hydrogen; petroleum coke; and asphalts.

  4. Radiation protection at CERN

    E-Print Network [OSTI]

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

    2013-01-01

    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.

  5. Integrity at CERN

    E-Print Network [OSTI]

    Department, HR

    2015-01-01

    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”.

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

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

    (November 2007) ITP Petroleum Refining: Energy Efficiency Roadmap for Petroleum Refineries in California 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. MECS 2006- Petroleum Refining

    Broader source: Energy.gov [DOE]

    Manufacturing Energy and Carbon Footprint for Petroleum Refining (NAICS 324110) Sector with Total Energy Input, October 2012 (MECS 2006)

  9. Signature CERN-URSS

    ScienceCinema (OSTI)

    None

    2011-04-25

    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.

  10. The significance of Cern

    ScienceCinema (OSTI)

    None

    2011-04-25

    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.

  11. The radiation protection of the CERN laboratory and its surroundings when operating the CERN accelerators

    E-Print Network [OSTI]

    Baarli, J

    1964-01-01

    The radiation protection of the CERN laboratory and its surroundings when operating the CERN accelerators

  12. Refiners trade hydroprocessing experience

    SciTech Connect (OSTI)

    Not Available

    1984-04-16

    Hydrogen treating and conversion processes less severe than hydrocracking abound in most refineries and therefore were a subject of high interest at the National Petroleum Refiners Association question and answer session on refining technology. The present paper, which is the second abstract of the transcript of the most recent meeting, covers hydroprocessing and some of its mechanical, process, and catalytic aspects.

  13. History of Cern

    ScienceCinema (OSTI)

    None

    2011-04-25

    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

  14. Refiners get petchems help

    SciTech Connect (OSTI)

    Wood, A.; Cornitius, T.

    1997-06-11

    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.

  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)

    2012-04-01

    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. 25th Birthday Cern- Amphi

    ScienceCinema (OSTI)

    None

    2011-04-25

    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)

  17. Minimally refined biomass fuel

    DOE Patents [OSTI]

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

    1984-01-01

    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.

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

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

    refining, metal casting, and steel making. Of these industrial sectors, petroleum refineries are one of the largest consumers of energy and the United States is the largest...

  19. Refines Efficiency Improvement

    SciTech Connect (OSTI)

    WRI

    2002-05-15

    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.

  20. 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)

    2015-01-01

    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.

  1. The ELENA project at CERN

    E-Print Network [OSTI]

    Oelert, W

    2015-01-01

    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...

  2. The ELENA project at CERN

    E-Print Network [OSTI]

    W. Oelert

    2015-01-23

    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 circumference synchrotron to further decelerate anti-protons from the Antiproton Decelerator (AD) from 5.3 MeV down to 100 keV.

  3. The NOMAD Experiment at CERN

    E-Print Network [OSTI]

    Vannucci, F

    2014-01-01

    The purpose of this paper is to review the experimental apparatus and some physics results fromthe NOMAD(neutrino oscillation magnetic detector) experiment which took data in the CERN wide-band neutrino beam from 1995 to 1998. It collected and reconstructed more than one million charged current(CC)$\

  4. 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

    2012-01-01

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

  5. Refining the shifted topological vertex

    SciTech Connect (OSTI)

    Drissi, L. B.; Jehjouh, H.; Saidi, E. H. [Faculte des Sciences, Laboratory/UFR-Physique des Hautes Energies, Rabat, 1014 (Morocco); Groupement National de Physique des Hautes Energies (GNPHE), Siege focal:FS, Rabat, 1014 (Morocco)

    2009-01-15

    We study aspects of the refining and shifting properties of the 3d MacMahon function C{sub 3}(q) used in topological string theory and BKP hierarchy. We derive the explicit expressions of the shifted topological vertex S{sub {lambda}}{sub {mu}}{sub {nu}}(q) and its refined version T{sub {lambda}}{sub {mu}}{sub {nu}}(q,t). These vertices complete results in literature.

  6. Ceremony 25th birthday Cern

    ScienceCinema (OSTI)

    None

    2011-04-25

    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

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

    E-Print Network [OSTI]

    Barone, Michele

    2012-01-01

    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.

  8. The NA62 Experiment at CERN

    E-Print Network [OSTI]

    Martellotti, Silvia

    2015-01-01

    The main physics goal of the NA62 experiment at CERN is to precisely measure the branching ratio of the Kaon rare decay $K^+\\rightarrow \\pi^+ \

  9. 25th Birthday Cern- Restaurant

    ScienceCinema (OSTI)

    None

    2011-04-25

    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.

  10. Reformulated Gasoline Market Affected Refiners Differently, 1995

    Reports and Publications (EIA)

    1996-01-01

    This article focuses on the costs of producing reformulated gasoline (RFG) as experienced by different types of refiners and on how these refiners fared this past summer, given the prices for RFG at the refinery gate.

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

    ScienceCinema (OSTI)

    None

    2011-04-25

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

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

    Energy Savers [EERE]

    Profile of the U.S. Petroleum Refining Industry (November 2007) Bandwidth Study U.S. Petroleum Refining ITP Petroleum Refining: Technology Roadmap for the Petroleum Industry...

  13. 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)

    1986-01-01

    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.

  14. A Refined Harmonic Rayleigh--Ritz Procedure and an Explicitly Restarted Refined Harmonic Arnoldi Algorithm #

    E-Print Network [OSTI]

    Jia, Zhongxiao

    A Refined Harmonic Rayleigh--Ritz Procedure and an Explicitly Restarted Refined Harmonic Arnoldi Algorithm # Guizhi Chen + Zhongxiao Jia # Abstract The work is fourfold. First, a refined harmonic Rayleigh--Ritz procedure is proposed, some relationships are established between the refined harmonic Ritz vector

  15. MERIT Dismantling I.Efthymiopoulos CERN, AB Dept

    E-Print Network [OSTI]

    McDonald, Kirk

    MERIT Dismantling I.Efthymiopoulos ­ CERN, AB Dept Special thanks to: Michael Lazzaroni, Adrian Fabich and the CERN transport crew MERIT ­ Meeting March 26, 2008 #12;Dismantling schedule Dismantling.Efthymiopoulos - CERN 2 #12;MERIT Dismantling ­ March 18, 2008 March 26, 2008 I.Efthymiopoulos - CERN 3 #12;MERIT

  16. Refiners Increasingly Employing Catalyst Regeneration as Alternative...

    Open Energy Info (EERE)

    million by the end of 2019. Refiners Benefit from Catalyst Regeneration Technology via Price Reductions and Lower Maintenance Costs The catalyst regeneration technology is the...

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

    ScienceCinema (OSTI)

    None

    2011-04-25

    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 .......

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

    SciTech Connect (OSTI)

    None

    2009-10-06

    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 .......

  19. 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.

  20. 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)

    1990-05-15

    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.

  1. 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

    2011-01-05

    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.

  2. CERN and high energy physics, the grand picture

    ScienceCinema (OSTI)

    None

    2011-10-06

    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?

  3. INFORMATION TECHNOLOGY 16 CERN Courier April 2001

    E-Print Network [OSTI]

    Bhat, Pushpalatha

    INFORMATION TECHNOLOGY 16 CERN Courier April 2001 Fermilab director MikeWitherell, welcoming nearly physics research and computing technology. We rely,all over our laboratory (and our community),on continued inno- vations in the areas being discussed here at this conference." Short history Reflecting

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

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

    Effective Fouling Minimization Increases the Efficiency and Productivity of Refineries ITP Petroleum Refining: Profile of the Petroleum Refining Industry in California:...

  5. Energy Efficiency Improvement in the Petroleum Refining Industry

    E-Print Network [OSTI]

    Worrell, Ernst; Galitsky, Christina

    2005-01-01

    and product flows. Energy Use in Petroleum Refining The2. Estimated energy use by petroleum refining process.EIA), 2002. Petroleum Supply Annual 2001, Energy Information

  6. The 1987 refining and petrochemical technology yearbook

    SciTech Connect (OSTI)

    Not Available

    1987-01-01

    This annual covers the latest in refining and petrochemical technology written by the experts in the field. Opening with a foreword by Richard Corbett, Refining and Petrochemical Editior of the Oil and Gas Journal. The annual includes nearly 100 articles from the 1986 issues of the Oil and Gas Journal, comprising a collection of new technical information, methods of analysis, forecasts and trends in such subject areas as plants, fuels, gasolines, coking, processing, contents, hydrocracking, equipment, catalysts, and petrochemicals.

  7. Trends in petroleum refining process technology

    SciTech Connect (OSTI)

    Kowalczyk, D. [Refining Process Services, Cheswick, PA (United States)

    1995-12-31

    In the 1990`s, the shift toward reformulated fuels and the unrelenting economic pressures on the petroleum refining industry have led to the ongoing development of a series of technological advances to improve fuels quality and industry operating efficiency. In this paper, ten of the most innovative and high impact recent developments in petroleum refining process technology will be highlighted. Process improvements and innovations have occurred in all facets of petroleum refining operations including fluid catalytic cracking, ether production, desulfurization, hydrocracking, gas processing, environmental control and heavy oil processing. Discussed will be the technical and economic impact of each of these new technologies on the petroleum refinery of the late 20th and early 21st century.

  8. Hydrotreating operations discussed at refining meeting

    SciTech Connect (OSTI)

    NONE

    1995-06-12

    At the most recent National Petroleum Refiners Association question and answer session on refining and petrochemical technology, refiners and a panel of experts exchanged experiences on hydrotreater operations. Topics addressed included reactor pressurization, scale basket removal, and the use of antifoulants in effluent exchangers. This article presents comments from the panelists on the following questions. (1) What is the industry practice used to speed up the pressurization of 2.25 Cr/1 Mo reactors during start-up? Is there any relationship between reactor skin temperature and pressure used? (2) Has anyone removed scale baskets from a hydrotreating reactor and compared operations before and after? If so, were there any noticeable differences? Why? (3) What is the industry experience with the use of antifoulants for hydrocracking or hydrotreating reactor effluent exchangers?

  9. Petroleum refining for the nontechnical person

    SciTech Connect (OSTI)

    Leffler, W.L.

    1985-01-01

    The second edition of this book remains a straightforward and uncomplicated text setting forth the many technical procedures involved in refining. The author has added a new chapter on simple and complex refineries and a revised chapter on gasoline blending, including current information on alcohol blending components. Contents include: Crude oil characteristics; Distilling; Flashing; The chemistry of petroleum; Catalytic cracking; Refining gas plants; Alkylation; Catalytic reforming; Residue reduction; Hydrocracking; Gasoline blending; Distillate fuels; Asphalt and residual fuel; Hydrogen, hydrotreating, and sulfur plants; Isomerization; Solvent recovery of aromatics; Ethylene plants; Simple and complex refineries; Crude oil, condensate, and natural gas liquids; Fuel values - heating values.

  10. Using supercritical fluids to refine hydrocarbons

    DOE Patents [OSTI]

    Yarbro, Stephen Lee

    2015-06-09

    A system and method for reactively refining hydrocarbons, such as heavy oils with API gravities of less than 20 degrees and bitumen-like hydrocarbons with viscosities greater than 1000 cp at standard temperature and pressure, using a selected fluid at supercritical conditions. A reaction portion of the system and method delivers lightweight, volatile hydrocarbons to an associated contacting unit which operates in mixed subcritical/supercritical or supercritical modes. Using thermal diffusion, multiphase contact, or a momentum generating pressure gradient, the contacting unit separates the reaction products into portions that are viable for use or sale without further conventional refining and hydro-processing techniques.

  11. Energy Bandwidth for Petroleum Refining Processes

    SciTech Connect (OSTI)

    none,

    2006-10-01

    The petroleum refining energy bandwidth report analyzes the most energy-intensive unit operations used in U.S. refineries: crude oil distillation, fluid catalytic cracking, catalytic hydrotreating, catalytic reforming, and alkylation. The "bandwidth" provides a snapshot of the energy losses that can potentially be recovered through best practices and technology R&D.

  12. Patterns for Refinement Automation Alexei Iliasov1

    E-Print Network [OSTI]

    Southampton, University of

    Patterns for Refinement Automation Alexei Iliasov1 , Elena Troubitsyna2 , Linas Laibinis2 in rigorous modelling and design by increasing automation of development steps. We introduce a notion establishes a basis for building a tool that would support formal system development via pattern reuse

  13. Hydrocarbon Processing`s refining processes `96

    SciTech Connect (OSTI)

    NONE

    1996-11-01

    The paper compiles information on the following refining processes: alkylation, benzene reduction, benzene saturation, catalytic cracking, catalytic reforming, coking, crude distillation, deasphalting, deep catalytic cracking, electrical desalting, ethers, fluid catalytic cracking, hydrocracking, hydrogenation, hydrotreating, isomerization, resid catalytic cracking, treating, and visbreaking. The application, products, a description of the process, yield, economics, installation, and licensor are given for each entry.

  14. Solvent dramatically affects protein structure refinement

    E-Print Network [OSTI]

    Summa, Christopher M.

    Solvent dramatically affects protein structure refinement Gaurav Chopraa , Christopher M. Summab, fold and function in aqueous solution in vivo and in vitro. In this work, we study the role of solvent explicit and implicit solvent were performed on a set of 75 native proteins to test the various energy

  15. 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

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

    E-Print Network [OSTI]

    Laurent Guiraud

    1998-01-01

    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.

  17. 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

    2013-01-01

    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.

  18. This first fill-size prototype dipole for CERN LHC collider was successfully demonstrated at CERN on 16 June 1998

    E-Print Network [OSTI]

    Laurent Guiraud

    1998-01-01

    Developed by the Italian Istituto Nazionale di Fisica Nucleare (INFN) in collaboration with CERN and with Ansaldo Energia as one of the main contractors.

  19. Minimum Bias Measurements with the ATLAS Detector at the CERN Large Hadron Collider

    E-Print Network [OSTI]

    Leyton, Michael A.

    2009-01-01

    CD-0002, CERN, Geneva, Switzerland, 2006. [119] M. Leyton.Report ATL-IP-QA-0026, CERN, Geneva, Switzerland, 2007.LHCC/98-4, CERN, Geneva, Switzerland, 1998. Technical Report

  20. CERN n_TOF facility Performance report

    E-Print Network [OSTI]

    Abbondanno, U; Cennini, P; Chiaveri, Enrico; Dario, M; Mengoni, A; Pavlopoulos, P; Saldaña, F; Vlachoudis, V; Wendler, H; CERN. Geneva; CERN. Geneva. ISOLDE and Neutron Time-of-Flight Experiments Committee; INTC

    2002-01-01

    An innovative neutron Time-of-Flight facility (n_TOF) has recently become operative at CERN. The high neutron flux is obtained by the spallation of 20 GeV/c protons onto a solid lead target. The proton beam is delivered by the Proton Synchrotron (PS) at CERN capable of providing up to four sharp bunches (RMS 6 ns) with an intensity of 7x10^12 protons per bunch within a 14.4s supercycle. The present report describes the outstanding characteristics of this facility: high neutron flux of 10^6 n/cm^2/7x10^12 p at 185 m, wide spectral function from 1 eV up to 250 MeV, low repetition rates, an excellent energy resolution of 2x10^-4 in the resonance region and low background conditions. These unique features open new possibilities for high precision neutron induced cross section measurements relevant to Nuclear Technology, Nuclear Astrophysics and fundamental Nuclear Physics.

  1. Grain Refinement of Permanent Mold Cast Copper Base Alloys

    SciTech Connect (OSTI)

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

    2005-04-01

    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.

  2. CERN-TH.6275/91 Monte Carlo Event Generation

    E-Print Network [OSTI]

    Sjöstrand, Torbjörn

    CERN-TH.6275/91 Monte Carlo Event Generation for LHC T. Sj¨ostrand CERN -- Geneva Abstract The necessity of event generators for LHC physics studies is illustrated, and the Monte Carlo approach is outlined. A survey is presented of existing event generators, followed by a more detailed study

  3. CERN SL -AP EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH

    E-Print Network [OSTI]

    Keil, Eberhard

    discussions of the super-conducting dipoles and their development are in Chap- ter VI. The radio The Large Hadron Collider LHC E. Keil The Large Hadron Collider Project LHC was approved by the CERN Council Collider Project CERN CH - 1211 Geneva 23 Switzerland LHC Project Report 79 Abstract 23/10/96 1 #12;The

  4. Using supercritical fluids to refine hydrocarbons

    DOE Patents [OSTI]

    Yarbro, Stephen Lee

    2014-11-25

    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.

  5. Gasification, polygeneration capture interest of refiners

    SciTech Connect (OSTI)

    Aalund, L.R.

    1996-12-09

    Integrated gasification combined cycle (IGCC) plants are moving into the mainstream of international refining. Such plants can turn refinery dregs into the whitest of all products--sparkling electricity--plus hydrogen and synthesis gas. Hydrogen is an indispensable element for cleaning up and improving modern fuels, while syngas is the feedstock for important finished petrochemicals and intermediaries. The status and potential of gasification technologies and projects were covered in a 3 day conference early in October in San Francisco. What made this conference different from others on the subject in the past was recognition that oil and natural gas producers and the international refining industry are becoming major power producers without government subsidies. Such projects can pass the scrutiny of lenders and the test of commerciality. They are not targeted simply for electricity, but also for production of hydrogen, steam, and petrochemical feedstock. The process objective for projects now far exceeds simple cogeneration. It`s now trigeneration, even polygeneration.

  6. Reaping Energy Savings from Petroleum Refining 

    E-Print Network [OSTI]

    Deng, A.; Cascone, R.

    2006-01-01

    balance given in terms of percentages of crude feed for various streams. It is noted that in California, where crude oils processed tend to be heavy, hydrocracking is often used to reduce the molecular weights of the vacuum gas oil and vacuum residual... processes. The REEP leverages Nexant’s refining expertise from its Oil and Gas business unit and DSM program implementation experience from its Energy Management business unit. The Program also fully uses the lengthened duration of the PGC funding...

  7. LOCAL REFINEMENT AND MULTILEVEL PRECONDITIONING: IMPLEMENTATION AND NUMERICAL EXPERIMENTS

    E-Print Network [OSTI]

    Holst, Michael J.

    refinement. While standard multilevel methods are effective for uniform refinement- based discretizations refined 2D and 3D meshes based on fairly standard (and easily implementable) red and red-green mesh by the Burroughs Wellcome Fund through the LJIS predoctoral training program at UC San Diego, in part by NSF (ACI

  8. 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 and discussions. 1 Introduction One important process in oil refining is to separate the crude oil into various

  9. ?????? ??? ??????????????? ??? ?????? ????????? ??? ????????????? ?????????? ??????????? ??? ???????? ????????? ??? 234U ?? ??? ?????? ??? ?????? ???????????, ???? ??????????? ??????? n_TOF ??? CERN

    E-Print Network [OSTI]

    Lampoudis, Christos

    At an international level several issues accompany the long-term development of nuclear science and its applications: nuclear waste management, new reactor design, increasingly safety requirements, public acceptance etc. This has triggered many sophisticated R&D activities, such as Accelerator Driven Systems or next generation reactor concepts and enhanced the ongoing effort to expand and improve the existing nuclear data. Among other measurements of special interest, is the neutron capture cross section determination for several isotopes related to the nuclear fuel cycle. This text mainly presents the obtained results from the (n,?) cross section measurement of 234U that was performed at n_TOF facility (CERN). In detail we describe the main features of the facility, the TAC (Total Absorption Calorimeter) detection arrangement and its performance under specific experimental conditions. Results in the form of R-matrix resonance parameters and cross sections are discussed in parallel with the existing ENDF...

  10. The BGU/CERN solar hydrothermal reactor

    E-Print Network [OSTI]

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

    2014-01-01

    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.

  11. Impedance issues in the CERN SPS

    SciTech Connect (OSTI)

    Linnecar, T.

    1999-12-03

    The future use of the CERN SPS accelerator as injector for the Large Hadron Collider, LHC, and the possible use of the SPS as a neutrino source for the Gran Sasso experiment are pushing the maximum intensity requirements of the accelerator much higher than achieved up to now. At the same time the requirements on beam quality are becoming far more stringent. The SPS machine, built in the 70's, is not a 'smooth' machine. It contains many discontinuities in vacuum chamber cross-section and many cavity-like objects, as well as the 5 separate RF systems at present installed. All these lead to a high impedance, seen by the beam, spread over a wide frequency range. As a result there is a constant fight against instabilities, both single and multi bunch, as the intensity increases. A program of studies is under way in the SPS to identify, reduce, and remove where possible the sources of these impedances.

  12. Beam Echoes in the CERN SPS

    E-Print Network [OSTI]

    Brüning, Oliver Sim; Ruggiero, F; Scandale, Walter; Shaposhnikova, Elena; Stellfeld, D

    1998-01-01

    Longitudinal echo signals have been produced in the CERN SPS by exciting a proton beam at 120~GeV/c with two short RF pulses separated by a suitable time-delay. The aim of the experiments was to confirm the analytical predictions for beam echoes in the SPS and to probe the applicability of beam echoes for a measurement of the energy distribution and diffusion coefficients in the accelerator. We summarise here the results obtained with bunched and un-bunched beams. For an un-bunched beam, the excitation frequencies are at different harmonics of the revolution frequency and result in an echo response at the difference frequency of the two RF kicks. For the case of a bunched beam, the RF kicks are adjusted to excite the quadrupole mode of the bunch motion and the beam echo response can also be observed as a quadrupole mode.

  13. Trigeneration Possibilities of Implementation at CERN

    E-Print Network [OSTI]

    Kühnl-Kinel, J

    1999-01-01

    Optimum distribution of energy supply systems can result in large savings in industrial facilities and production devices. Identifying the configuration of existing equipment and its loading, in order to minimize total energy consumption and at the same time satisfy given load demands, has very high payback potential. This paper presents the principle of trigeneration, the technology that can offer a highly efficient way of converting primary fuel (gas, oil) into useful energy as electricity, heat and chilled water simultaneously. It explains different factors that must be considered for such systems to be economically feasible. Some examples of industrial trigeneration systems are analysed and discussed to illustrate the application. Also the possibility of implementation of trigeneration at CERN is discussed, taking into account the existing cogeneration system, power supply structure, secondary energy demands, as well as future developments in our energy policy.

  14. Deformable elastic network refinement for low-resolution macromolecular crystallography

    SciTech Connect (OSTI)

    Schröder, Gunnar F.; Levitt, Michael; Brunger, Axel T.

    2014-09-01

    An overview of applications of the deformable elastic network (DEN) refinement method is presented together with recommendations for its optimal usage. Crystals of membrane proteins and protein complexes often diffract to low resolution owing to their intrinsic molecular flexibility, heterogeneity or the mosaic spread of micro-domains. At low resolution, the building and refinement of atomic models is a more challenging task. The deformable elastic network (DEN) refinement method developed previously has been instrumental in the determinion of several structures at low resolution. Here, DEN refinement is reviewed, recommendations for its optimal usage are provided and its limitations are discussed. Representative examples of the application of DEN refinement to challenging cases of refinement at low resolution are presented. These cases include soluble as well as membrane proteins determined at limiting resolutions ranging from 3 to 7 Å. Potential extensions of the DEN refinement technique and future perspectives for the interpretation of low-resolution crystal structures are also discussed.

  15. Proposal to negotiate a contract, without competitive tendering, for the transmission of elcetricity to CERN

    E-Print Network [OSTI]

    2015-01-01

    Proposal to negotiate a contract, without competitive tendering, for the transmission of elcetricity to CERN

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

    E-Print Network [OSTI]

    1979-01-01

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

  17. Technology transfer and technological learning through CERN's procurement activity

    E-Print Network [OSTI]

    Autio, Erkko; Hameri, Ari-Pekka; CERN. Geneva

    2003-01-01

    This report analyses the technological learning and innovation benefits derived from CERN's procurement activity during the period 1997-2001. The base population of our study, the technology-intensive suppliers to CERN, consisted of 629 companies out of 6806 companies during the same period, representing 1197 MCHF in procurement. The main findings from the study can be summarized as follows: the various learning and innovation benefits (e.g., technological learning, organizational capability development, market learning) tend to occur together. Learning and innovation benefits appear to be regulated by the quality of the supplier's relationship with CERN: the greater the amount of social capital built into the relationship, the greater the learning and innovation benefits. Regardless of relationship quality, virtually all suppliers derived significant marketing reference benefits from CERN. Many corollary benefits are associated with procurement activity. As an example, as many as 38% of the respondents devel...

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

    E-Print Network [OSTI]

    McDonald, Kirk

    to the West Area Work done by CERN/AB-PO group Status: Power supply installed in bat.193 Refurbishment started ­ will be completed by October 2006 AC transformer installed Associated AC circuitry refurbishment to be done

  19. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN -PS DIVISION

    E-Print Network [OSTI]

    Keil, Eberhard

    . Wuensch Abstract The CLIC (Compact Linear Collider) high-gradient RF structure testing program has been. Wilson, W. Wuensch CERN, Geneva, Switzerland Abstract The CLIC (Compact Linear Collider) high-gradient RF

  20. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN -PS DIVISION

    E-Print Network [OSTI]

    Keil, Eberhard

    of the Compact Linear Collider study (CLIC). A first test has been carried out at the CLIC Test Facility II (CTF A laser wire scanner is under development at CERN in the framework of the Compact LInear Collider study

  1. CCLIBS: The CERN Power Converter Control Libraries

    E-Print Network [OSTI]

    King, Quentin; Magrans De Abril, Marc; Martino, Michele; Murillo Garcia, Raul; Nicoletti, Achille

    2015-01-01

    Accurate control of power converters is a vital activity in large physics projects. Several different control scenarios may coexist, including regulation of a circuit’s voltage, current, or field strength within a magnet. Depending on the type of facility, a circuit’s reference value may be changed asynchronously or synchronously with other circuits. Synchronous changes may be on demand or under the control of a cyclic timing system. In other cases, the reference may be calculated in real-time by an outer regulation loop of some other quantity, such as the tune of the beam in a synchrotron. The power stage may be unipolar or bipolar in voltage and current. If it is unipolar in current, it may be used with a polarity switch. Depending on the design, the power stage may be controlled by a firing angle or PWM duty-cycle reference, or a voltage or current reference. All these cases are supported by the CERN Converter Control Libraries (CCLIBS). These open-source C libraries include advanced reference generati...

  2. Stochastic Cooling at the CERN Antiproton Decelerator

    E-Print Network [OSTI]

    Carli, Christian

    2000-01-01

    When transforming the CERN Antiproton Collector (AC) into the Antiproton Decelerator (AD), the stochastic cooling systems were rebuilt to cope with the new requirements. Instead of using the original three frequency bands, (0.9-1.6 GHz, 1.6-2.45 GHz and 2.4-3.2 GHz) only the first of these was used due to lattice limitations and other constraints. The same pick-ups and kickers are in use at two different energies. As in the AC, simultaneous cooling in all three phase planes is required. Switching between two transmission paths (at 3.5 GeV/c and 2.0 GeV/c) became necessary, including separate notch filters and delay compensation for the kicker sections. The tanks has to be rendered bakeable (150 C) to make the vacuum properties (energies. Further improvements included programmable, phase-invariant electronic attenuators and amplitude-invariant delays. Experience during commissioning showed that careful optimization (depth and periodicity) of the notch filters...

  3. AEgIS experiment commissioning at CERN

    SciTech Connect (OSTI)

    Krasnicky, D.; Aghion, S.; Amsler, C.; Ariga, A.; Ariga, T.; Ereditato, A.; Kawada, J.; Kimura, M.; Pistillo, C.; Scampoli, P.; Storey, J.; Belov, A. S.; Gninenko, S. N.; Bonomi, G.; Subieta Vasquez, M. A.; Braeunig, P.; Oberthaler, M. K.; Brusa, R. S.; Di Noto, L.; Mariazzi, S.; and others

    2013-03-19

    The AEgIS Experiment is an international collaboration based at CERN whose aim is to perform the first direct measurement of the gravitational acceleration g of antihydrogen in the gravitational field of the Earth. Cold antihydrogen will be produced with a pulsed charge exchange reaction in a cylindrical Penning trap where antiprotons will be cooled to 100mK. The cold antihydrogen will be produced in an excited Rydberg state and subsequently formed into a beam. The deflection of the antihydrogen beam will be measured by using Moire deflectometer gratings. After being approved in late 2008, AEgIS started taking data in a commissioning phase early 2012. This report presents an overview of the AEgIS experiment, describes its current status and shows the first measurements on antiproton catching and cooling in the 5 T Penning catching trap. We will also present details on the techniques needed for the 100mK antihydrogen production, such as pulsed positronium production and its excitation with lasers.

  4. Refiners react to changes in the pipeline infrastructure

    SciTech Connect (OSTI)

    Giles, K.A.

    1997-06-01

    Petroleum pipelines have long been a critical component in the distribution of crude and refined products in the U.S. Pipelines are typically the most cost efficient mode of transportation for reasonably consistent flow rates. For obvious reasons, inland refineries and consumers are much more dependent on petroleum pipelines to provide supplies of crude and refined products than refineries and consumers located on the coasts. Significant changes in U.S. distribution patterns for crude and refined products are reshaping the pipeline infrastructure and presenting challenges and opportunities for domestic refiners. These changes are discussed.

  5. 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...

  6. Bandwidth Study U.S. Petroleum Refining | Department of Energy

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

    (or bandwidth) of potential energy savings opportunities. This bandwidth study examines energy consumption and potential energy savings opportunities in U.S. petroleum refining....

  7. 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...

  8. New Process for Grain Refinement of Aluminum. Final Report

    SciTech Connect (OSTI)

    Dr. Joseph A. Megy

    2000-09-22

    A new method of grain refining aluminum involving in-situ formation of boride nuclei in molten aluminum just prior to casting has been developed in the subject DOE program over the last thirty months by a team consisting of JDC, Inc., Alcoa Technical Center, GRAS, Inc., Touchstone Labs, and GKS Engineering Services. The Manufacturing process to make boron trichloride for grain refining is much simpler than preparing conventional grain refiners, with attendant environmental, capital, and energy savings. The manufacture of boride grain refining nuclei using the fy-Gem process avoids clusters, salt and oxide inclusions that cause quality problems in aluminum today.

  9. ITP Petroleum Refining: Petroleum Technology Vision 2020 | Department...

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

    Petroleum Technology Vision 2020 ITP Petroleum Refining: Petroleum Technology Vision 2020 techvision.pdf More Documents & Publications Manufacturing Energy and Carbon Footprint...

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

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

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

  11. Refined knot invariants and Hilbert schemes

    E-Print Network [OSTI]

    Eugene Gorsky; Andrei Negu?

    2015-02-13

    We consider the construction of refined Chern-Simons torus knot invariants by M. Aganagic and S. Shakirov from the DAHA viewpoint of I. Cherednik. We give a proof of Cherednik's conjecture on the stabilization of superpolynomials, and then use the results of O. Schiffmann and E. Vasserot to relate knot invariants to the Hilbert scheme of points on the plane. Then we use the methods of the second author to compute these invariants explicitly in the uncolored case. We also propose a conjecture relating these constructions to the rational Cherednik algebra, as in the work of the first author, A. Oblomkov, J. Rasmussen and V. Shende. Among the combinatorial consequences of this work is a statement of the m/n shuffle conjecture.

  12. Entrevista con José Triana

    E-Print Network [OSTI]

    Vasserot, Christilla

    1995-10-01

    muy difícil buscar una definición porque son los instrumentos con los cuales uno trabaja y al mismo tiempo uno no sabe exactamente con qué es lo que trabaja. Porque la mayoría del tiempo sabemos que trabajamos con una cosa que se llama la memoria..., pero la memoria es tan inconsútil y al mismo tiempo tan fragmentada que lo único de que podemos tener conciencia es de su fragmentación. No podemos tener conciencia de su estructuración. Trabajar con la memoria es trabajar siempre como en un terreno...

  13. 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

  14. 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 calculus [Fidge et al., 1998] through the specifi­ cation and refinement of the well­known Steam Boiler. These features, although not central to the Steam Boiler Control Problem, are typical of features which must

  15. Refining and End Use Study of Coal Liquids

    SciTech Connect (OSTI)

    1997-10-01

    This report summarizes revisions to the design basis for the linear programing refining model that is being used in the Refining and End Use Study of Coal Liquids. This revision primarily reflects the addition of data for the upgrading of direct coal liquids.

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

    ScienceCinema (OSTI)

    None

    2011-10-06

    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

  17. 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

  18. Steel refining with an electrochemical cell

    DOE Patents [OSTI]

    Blander, M.; Cook, G.M.

    1988-05-17

    Apparatus is described for processing a metallic fluid containing iron oxide, container for a molten metal including an electrically conductive refractory disposed for contact with the molten metal which contains iron oxide, an electrolyte in the form of a basic slag on top of the molten metal, an electrode in the container in contact with the slag electrically separated from the refractory, and means for establishing a voltage across the refractory and the electrode to reduce iron oxide to iron at the surface of the refractory in contact with the iron oxide containing fluid. A process is disclosed for refining an iron product containing not more than about 10% by weight oxygen and not more than about 10% by weight sulfur, comprising providing an electrolyte of a slag containing one or more of calcium oxide, magnesium oxide, silica or alumina, providing a cathode of the iron product in contact with the electrolyte, providing an anode in contact with the electrolyte electrically separated from the cathode, and operating an electrochemical cell formed by the anode, the cathode and the electrolyte to separate oxygen or sulfur present in the iron product therefrom. 2 figs.

  19. Steel refining with an electrochemical cell

    DOE Patents [OSTI]

    Blander, M.; Cook, G.M.

    1985-05-21

    Disclosed is an apparatus for processing a metallic fluid containing iron oxide, container for a molten metal including an electrically conductive refractory disposed for contact with the molten metal which contains iron oxide, an electrolyte in the form of a basic slag on top of the molten metal, an electrode in the container in contact with the slag electrically separated from the refractory, and means for establishing a voltage across the refractory and the electrode to reduce iron oxide to iron at the surface of the refractory in contact with the iron oxide containing fluid. A process is disclosed for refining an iron product containing not more than about 10% by weight sulfur, comprising providing an electrolyte of a slag containing one or more of calcium oxide, magnesium oxide, silica or alumina, providing a cathode of the iron product in contact with the electrolyte, providing an anode in contact with the electrolyte electrically separated from the cathode, and operating an electrochemical cell formed by the anode, the cathode and the electrolyte to separate oxygen or sulfur present in the iron product therefrom.

  20. GRChombo : Numerical Relativity with Adaptive Mesh Refinement

    E-Print Network [OSTI]

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

    2015-01-01

    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...

  1. The New Modular Control System for Power Converters at CERN

    E-Print Network [OSTI]

    Di Cosmo, Matteo

    2015-01-01

    The CERN accelerator complex consists of several generations of particle accelerators, with around 5000 power converters supplying regulated current and voltage to normal and superconducting magnet circuits. Today around 12 generations of converter control platforms can be found in the accelerator complex, ranging in age and technology. The diversity of these platforms has a significant impact on operability, maintenance and support of power converters. Over the past few years a new generation of modular controls called RegFGC3 has been developed by CERN’s power conversion group, with a goal to provide a standardised control platform, supporting a wide variety of converter topologies. The aim of this project is to reduce maintenance costs by decreasing the variety and diversity of control systems whilst simultaneously improving the operability and reliability of power converters and their controls. This paper describes the state of the on-going design and realization of the RegFGC3 platform, focusing on fun...

  2. Minimum Bias Measurements with the ATLAS Detector at the CERN Large Hadron Collider

    E-Print Network [OSTI]

    Leyton, Michael A.

    2009-01-01

    Pixel DCS Hardware. Technical Report ATL-IP- CD-0002, CERN,ATLAS Pixel Detector. Technical Report ATL-IP-QA-0026, CERN,Switzerland, 1998. Technical Report BIBLIOGRAPHY [10] LHCb

  3. Multigrid elliptic equation solver with adaptive mesh refinement

    E-Print Network [OSTI]

    J. David Brown; Lisa L. Lowe

    2005-03-22

    In this paper we describe in detail the computational algorithm used by our parallel multigrid elliptic equation solver with adaptive mesh refinement. Our code uses truncation error estimates to adaptively refine the grid as part of the solution process. The presentation includes a discussion of the orders of accuracy that we use for prolongation and restriction operators to ensure second order accurate results and to minimize computational work. Code tests are presented that confirm the overall second order accuracy and demonstrate the savings in computational resources provided by adaptive mesh refinement.

  4. Integrated process for the solvent refining of coal

    DOE Patents [OSTI]

    Garg, Diwakar (Macungie, PA)

    1983-01-01

    A process is set forth for the integrated liquefaction of coal by the catalytic solvent refining of a feed coal in a first stage to liquid and solid products and the catalytic hydrogenation of the solid product in a second stage to produce additional liquid product. A fresh inexpensive, throw-away catalyst is utilized in the second stage hydrogenation of the solid product and this catalyst is recovered and recycled for catalyst duty in the solvent refining stage without any activation steps performed on the used catalyst prior to its use in the solvent refining of feed coal.

  5. Reitveld refinement study of PLZT ceramics

    SciTech Connect (OSTI)

    Kumar, Rakesh; Bavbande, D. V.; Bafna, V. H.; Mohan, D.; Kothiyal, G. P.; Mishra, R.

    2013-02-05

    PLZT ceramics of composition Pb{sub 0.93}La{sub 0.07}(Zr{sub 0.60}Ti{sub 0.40})O{sub 3}, have been milled for 6hrs and 24hrs were prepared by solid state synthesis route. The 6hrs milled and 24hrs milled samples are represented as PLZT-6 and PLZT-24 ceramics respectively. X-ray diffraction (XRD) pattern was recorded at room temperature. The XRD pattern has been analyzed by employing Rietveld refinement method. Phase identification shows that all the peaks observed in PLZT-6 and PLZT-24 ceramics could be indexed to P4mm space group with tetragonal symmetry. The unit cell parameters of 6hrs milled PLZT ceramics are found to be a=b=4.0781(5)A and c=4.0938(7)A and for 24hrs milled PLZT ceramics unit cell parameters are a=b=4.0679(4)A and c=4.1010(5)A . The axial ratio c/a and unit cell volume of PLZT-6 are 1.0038 and 68.09(2)A{sup 3} respectively. In PLZT-24 samples, the axial ratio c/a value is 1.0080 which is little more than that of the 6hr milled PLZT sample whereas the unit cell volume decrease to 67.88 (1) A{sup 3}. An average crystallite size was estimated by using Scherrer's formula. Dielectric properties were obtained by measuring the capacitance and tand loss using Stanford LCR meter.

  6. CERN-INTC-2011-009/INTC-P-293 EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH

    E-Print Network [OSTI]

    , Paisley, UK 2 GSI, Darmstadt, Germany 3 MPIK, Heidelberg, Germany 4 IKS, Leuven, Belgium 5 ISOLDE, CERN 6

  7. First Commissioning Results of the n_TOF Facility at CERN

    E-Print Network [OSTI]

    Borcea, C; Cennini, P; Dahlfors, M; Dangendorf, V; Ferrari, A; García-Muñoz, G; Kadi, Y; Lacoste, V; Nolte, R; Radermacher, E; Rubbia, Carlo; Saldaña, F; Vlachoudis, V; Zanini, L; CERN. Geneva. SPS and LHC Division

    2001-01-01

    n_TOF, the new neutron time of flight facility at CERN, is now operational and has been commisioned.

  8. ORGANIZATION FOR NUCLEAR RESEARCH CERN/PS/2002-071

    E-Print Network [OSTI]

    Keil, Eberhard

    this worst-case value. The CLIC (Compact Linear Collider) positron source is based on the conventional scheme SCHEME L. Rinolfi, CERN, Geneva, Switzerland T. Kamitani* , KEK, Japan Abstract The CLIC (Compact Linear Collider) positron source is based on the conventional scheme, using a metal converter target

  9. CATALYTIC CONVERSION OF SOLVENT REFINED COAL TO LIQUID PRODUCTS

    E-Print Network [OSTI]

    Tanner, K.I.

    2010-01-01

    I. Solvent Refined Coal II. Catalysts III. Purpose andSondreal, E.A. , "Viscosity of Coal Liquids - The Effect ofAnthraxylon - Kinetics of Coal Hydrogenation," Ind. and Eng.

  10. Error estimation and adaptive mesh refinement for aerodynamic flows

    E-Print Network [OSTI]

    Hartmann, Ralf

    Error estimation and adaptive mesh refinement for aerodynamic flows Ralf Hartmann1 and Paul Houston, 38108 Braunschweig, Germany Ralf.Hartmann@dlr.de 2 School of Mathematical Sciences University

  11. Error estimation and adaptive mesh refinement for aerodynamic flows

    E-Print Network [OSTI]

    Hartmann, Ralf

    Error estimation and adaptive mesh refinement for aerodynamic flows Ralf Hartmann, Joachim Held), Lilien- thalplatz 7, 38108 Braunschweig, Germany, e-mail: Ralf.Hartmann@dlr.de 1 #12;2 Ralf Hartmann

  12. Europe`s refining industry woes detailed at London meeting

    SciTech Connect (OSTI)

    Rhodes, A.

    1996-12-09

    Refiners, catalyst producers, engineering firms, and process licensers discussed Europe`s refining industry at the first-ever European Refining Technology Conference, October 28--30, London. Some 400 attendees heard presentations on European Union (EU) environmental legislation, and a variety of processing and catalyst options available to help refiners comply with the regulations. The conference consisted of two parallel sessions: one covering heavy-ends conversion and a second covering hydroprocessing and other light-ends processes. Each session included nine technical presentations, and a panel discussion in which 12 panelists answered presubmitted questions. The heavy-ends technical presentations covered topics including: fluid catalytic cracking (FCC) technology and catalysts, bottoms upgrading options, deep-cut distillation techniques, and gasification. The light-ends papers discussed: European air and fuels qualities, catalytic reforming, hydrotreating, biocatalytic desulfurization, hydrocracking, dewaxing, alkylation, and etherification.

  13. CATALYTIC CONVERSION OF SOLVENT REFINED COAL TO LIQUID PRODUCTS

    E-Print Network [OSTI]

    Tanner, K.I.

    2010-01-01

    E.A. , "Viscosity of Coal Liquids - The Effect of CharacterOF SOLVENT REFINED COAL TO LIQUID PRODUCTS Kylan I. Tanner*for Conversion of Coal to Liquid Fuels: Basic and Ex-

  14. Automatic grid refinement criterion for lattice Boltzmann method

    E-Print Network [OSTI]

    Lagrava, Daniel; Latt, Joneas; Chopard, Bastien

    2015-01-01

    In all kinds of engineering problems, and in particular in methods for computational fluid dynamics based on regular grids, local grid refinement is of crucial importance. To save on computational expense, many applications require to resolve a wide range of scales present in a numerical simulation by locally adding more mesh points. In general, the need for a higher (or a lower) resolution is not known \\emph{a priori}, and it is therefore difficult to locate areas for which local grid refinement is required. In this paper, we propose a novel algorithm for the lattice Boltzmann method, based on physical concepts, to automatically construct a pattern of local refinement. We apply the idea to the two-dimensional lid-driven cavity and show that the automatically refined grid can lead to results of equal quality with less grid points, thus sparing computational resources and time. The proposed automatic grid refinement strategy has been implemented in the parallel open-source library Palabos.

  15. Upgrade Strategies for the Proton Synchrotron Booster Dump at CERN

    E-Print Network [OSTI]

    Sarrio Martinez, A; Maglioni, C

    2012-01-01

    CERN’s LHC Injection chain Upgrade (LIU) involves a revision of the Proton Synchrotron Booster dump, which was designed in the 1960’s to cope with beam energies reaching 800 MeV and intensities of 1e+13 particles per pulse. Thermo-mechanical studies highlighted the need for an upgrade of the dump, so that it is capable of withstanding energies in the order of 2 GeV and intensities up to 1e+14 particles per pulse. This paper proposes a new design of the dump in the light of various constraints and choices such as the geometry, materials and the integration of the required cooling system. Further topics discussed include the strategy for dismantling the old device, which has been continuously irradiated for almost 40 years and presents a difficult access. Therefore, a detailed ALARA procedure is being prepared in order to carry out the upgrade works in the area.

  16. Upgrade of the cryogenic CERN RF test facility

    SciTech Connect (OSTI)

    Pirotte, O.; Benda, V.; Brunner, O.; Inglese, V.; Maesen, P.; Vullierme, B.; Koettig, T.

    2014-01-29

    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.

  17. Co-generation at CERN Beneficial or not?

    E-Print Network [OSTI]

    Wilhelmsson, M

    1998-01-01

    A co-generation plant for the combined production of electricity and heat has recently been installed on the CERN Meyrin site. This plant consists of: a gas turbine generator set (GT-set), a heat recovery boiler for the connection to the CERN primary heating network, as well as various components for the integration on site. A feasibility study was carried out and based on the argument that the combined use of natural gas -available anyhow for heating purposes- gives an attractively high total efficiency, which will, in a period of time, pay off the investment. This report will explain and update the calculation model, thereby confirming the benefits of the project. The results from the commissioning tests will be taken into account, as well as the benefits to be realized under the condition that the plant can operate undisturbed by technical setbacks which, incidentally, has not been entirely avoided during the first year of test-run and operation.

  18. Java Expert GUI framework for CERN beam instrumentation systems

    E-Print Network [OSTI]

    Bart Pedersen, S; Jackson, S

    2011-01-01

    The CERN Beam Instrumentation Group’s software section has recently performed a study of the tools used to produce Java expert GUI applications. This paper will present the analysis that was made to understand the requirements for generic components and the resulting tools including a collection of Java components that have been made available for a wider audience. The paper will also discuss the prospect of using Maven as the deployment tool with its implications for developers and users.

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

    SciTech Connect (OSTI)

    Not Available

    1990-10-11

    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.

  20. Survey shows over 1,000 refining catalysts

    SciTech Connect (OSTI)

    Rhodes, A.K.

    1991-10-14

    The Journal's latest survey of worldwide refining catalysts reveals that there are more than 1,040 unique catalyst designations in commercial use in 19 processing categories - an increase of some 140 since the compilation of refining catalysts was last published. As a matter of interest, some 700 catalysts were determined during the first survey. The processing categories surveyed in this paper are: Catalytic naphtha reforming. Dimerization, Isomerization (C{sub 4}), Isomerization (C{sub 5} and C{sub 6}), Isomerization (xylenes), Fluid catalytic cracking (FCC), Hydrocracking, Mild hydrocracking, hydrotreating/hydrogenation/ saturation, Hydrorefining, Polymerization, Sulfur (elemental) recovery, Steam hydrocarbon reforming, Sweetening, Clause unit tail gas treatment, Oxygenates, Combustion promoters (FCC), Sulfur oxides reduction (FCC), and Other refining processes.

  1. Trends in heavy oil production and refining in California

    SciTech Connect (OSTI)

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

    1992-07-01

    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.

  2. Trends in heavy oil production and refining in California

    SciTech Connect (OSTI)

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

    1992-07-01

    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.

  3. Entrevista con Sabina Berman

    E-Print Network [OSTI]

    Hind, Emily

    2000-04-01

    revolución. Entonces a mí me pareció fascinante que él pensara en la democracia con tal intensidad descartando el cincuenta por ciento de la población. Igual que ellos [los revolucionarios]. En México se hizo la revolución para la igualdad, la fraternidad... mujeres, que además nunca se concretizo totalmente. No ciertamente en las áreas de poder, pero sí en la vida cotidiana. En la Revolución Mexicana para nada. Eso era una metáfora extrema de la situación actual donde hablamos de la democracia y todo el...

  4. Entrevista con Alberto Félix Alberto

    E-Print Network [OSTI]

    Pé rez-Pineda, Federico

    1990-04-01

    SPRING 1990 75 Entrevista con Alberto Felix Alberto Federico Pérez-Pineda Alberto Felix Alberto, director de la compañía argentina Teatro del Sur, nació en Buenos Aires en 1948. Recibió en 1987 el premio Moliere en calidad de mejor director con...SPRING 1990 75 Entrevista con Alberto Felix Alberto Federico Pérez-Pineda Alberto Felix Alberto, director de la compañía argentina Teatro del Sur, nació en Buenos Aires en 1948. Recibió en 1987 el premio Moliere en calidad de mejor director con...

  5. Interval methods for computing various refinements of Nash equilibria

    E-Print Network [OSTI]

    Sainudiin, Raazesh

    Interval methods for computing various refinements of Nash equilibria Bartlomiej Jacek Kubica, assumptions on their knowledge, ... Concepts: Dominant strategy equilibrium. The Nash equilibrium. The core of a game (for cooperative games). ... #12;Nash equilibrium Let the game (X1 ,...,Xn ;q1 ,...,qn

  6. UNIVERSITY OF CALGARY Refined Freeman-Durden for Harvest Detection

    E-Print Network [OSTI]

    Calgary, University of

    detection in rice paddy fields. However, harvest detection for other crops without a smooth underlying water#12;UNIVERSITY OF CALGARY Refined Freeman-Durden for Harvest Detection using PolSAR data by Sina is one of the main challenges of the current century. Harvest detection, as an input for decision making

  7. Refinement of Hybrid Systems from Formal Models to Design Languages

    E-Print Network [OSTI]

    Cengarle, María Victoria

    of high-level design of a control system, it is highly desirable to use representations that accuratelyRefinement of Hybrid Systems from Formal Models to Design Languages Jan Romberg Systems & Software Abstract System-level design for discrete-continuous embedded systems is a complex and error- prone task

  8. routing, Internet, BGP Internet Expansion, Refinement and Churn

    E-Print Network [OSTI]

    California at San Diego, University of

    routing, Internet, BGP Internet Expansion, Refinement and Churn ANDRE BROIDO, EVI NEMETH, KC CLAFFY measures reflect contributions of opposite sign, and that true measure of variation, or churn, is the sum a standalone prefix to a root prefix) are instances of routing system churn. One advantage of using our notion

  9. routing, Internet, BGP Internet Expansion, Refinement and Churn

    E-Print Network [OSTI]

    California at San Diego, University of

    routing, Internet, BGP Internet Expansion, Refinement and Churn ANDRE BROIDO, EVI NEMETH, KC CLAFFY contributions of opposite sign, and that true measure of variation, or churn, is the sum of their absolute a standalone prefix to a root prefix) are instances of routing system churn. One advantage of using our notion

  10. 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

  11. TOPICAL PAPER Potential Synergies and Challenges in Refining Cellulosic Biomass

    E-Print Network [OSTI]

    California at Riverside, University of

    TOPICAL PAPER Potential Synergies and Challenges in Refining Cellulosic Biomass to Fuels, Chemicals Hampshire 03755 Lignocellulosic biomass such as agricultural and forestry residues and dedicated crops that outweigh increased biomass transport costs for facilities processing less than about 10,000 dry tons per

  12. U.S.-CERN Agreement Paves Way for New Era of Scientific Discovery...

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

    Research (CERN) signed today will pave the way for renewed collaboration in particle physics, promising to yield new insights into fundamental particles and the nature of matter...

  13. CERN's Linac4 H{sup -} sources: Status and operational results...

    Office of Scientific and Technical Information (OSTI)

    C. 1 more ; and others less + Show Author Affiliations CERN, 1211 Geneva 23 (Switzerland) Publication Date: 2015-04-08 OSTI Identifier: 22391413 Resource Type: Journal...

  14. Entrevista con Wilberto Cantón

    E-Print Network [OSTI]

    Vé lez, Joseph F.

    1979-10-01

    FALL 1979 71 Entrevista con Wilberto Cantón JOSEPH F. VÉLEZ Señor Cantón, ¿quisiera usted decirme donde y cuándo nació?1 Nací en la ciudad de Mérida, Yucatán, el día 15 de julio de 1925. ¿Puede usted ahora decirnos un poco de su educación... desanima y se retira, se dedica a otros trabajos, o busca otros géneros literarios y, a eso se debe la pobreza actual del teatro mexicano. Así que diría que es por jaita de quien produzca las obras. Sí. Yo creo que esta es una tarea que corresponde, en...

  15. 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

    2008-05-27

    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.

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

    Energy Savers [EERE]

    RFA-14-0001 - In the Matter of Commonwealth Oil Refining Company, Inc.Commonwealth of Puerto Rico RFA-14-0001 - In the Matter of Commonwealth Oil Refining Company, Inc....

  17. Abstraction and Counterexample-Guided Refinement in Model Checking of Hybrid Systems

    E-Print Network [OSTI]

    : Formal Verification, Abstraction, Model Checking, Hybrid Systems, Refinement, Counterexamples #12Abstraction and Counterexample-Guided Refinement in Model Checking of Hybrid Systems Edmund Clarke a counterexample generated by the model checker. For hybrid systems, analysis of the counterexample requires

  18. New Seismic Model Will Refine Hazard Analysis at U.S. Nuclear...

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

    New Seismic Model Will Refine Hazard Analysis at U.S. Nuclear Plants New Seismic Model Will Refine Hazard Analysis at U.S. Nuclear Plants January 31, 2012 - 2:09pm Addthis The...

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

    E-Print Network [OSTI]

    Chau, Chi-Fai

    1994-01-01

    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...

  20. Amendment to the agreement between CERN and Ukraine concerning the granting of the status of Associate Member at CERN Extension of the deadline for the notification of the completion of the internal approval procedures of the agreement by Ukraine

    E-Print Network [OSTI]

    2015-01-01

    Amendment to the agreement between CERN and Ukraine concerning the granting of the status of Associate Member at CERN Extension of the deadline for the notification of the completion of the internal approval procedures of the agreement by Ukraine

  1. 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]

    2011-01-01

    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

  2. Evidence of OPEC pricing power: raw materials or refined products

    SciTech Connect (OSTI)

    Not Available

    1988-09-30

    For eight years, US petroleum and consumer sectors have argued for or against a free-market policy where international trade is concerned. Briefly, between 1982 and 1985, the argument against importation of refined products was almost as heated as the argument against importation of crude. But since the 1986 crude oil price crash, much has changed. Some contemporary thinking is that as long as the US can count on low crude prices, the benefits will outweigh the detriment to the US crude producing sector. This issue also contains the following: (1) ED refining netback data series for the US Gulf and West Coasts, Rotterdam, and Singapore for late September 1988; and (2) ED fuel price/tax series for countries of the Eastern Hemisphere, September 1988 edition. 8 figures, 5 tables.

  3. Canadian refiner finds simple route to reformulated gasoline production

    SciTech Connect (OSTI)

    Walsh, B. [North Atlantic Refining Ltd., Come By Chance, Newfoundland (Canada); McDonald, G.W.G. [IONA Ltd., Sarasota, FL (United States); Perkins, J.D. [United Catalysts Inc., Louisville, KY (United States)

    1997-03-17

    North Atlantic Refining Ltd. (NARL) operates a 105,000 b/sd hydrocracking refinery at Come By Chance, Newfoundland. NARL sells gasoline into markets in Newfoundland and the northeastern US. When the US Environmental Protection Agency instituted reformulated gasoline (RFG) requirements as part of the Clean Air Act amendments of 1990, NARL had to find a way to meet the specifications, even though the refinery is not within US territory. The refiner chose to add a small hydrogenation unit to treat the portion of the reformate stream containing benzene precursors. Since start-up of the unit in late 1995, it has achieved 100% benzene hydrogenation, thus allowing NARL to easily produce RFG containing less than 1.0 vol% benzene. The paper discusses procurement, hydrogen supply, catalyst, special features, start-up, operations, and process control.

  4. El mayor laboratorio en física del mundo Juan Antonio Rubio, candidato a dirigir el CERN

    E-Print Network [OSTI]

    2007-01-01

    The spanish Government presented last Friday at the CERN Council Juan Antonio Rubio, as candidate for the post of Director General of CERN. It's the first time that the spanish Government proposes a candidate for the Direction of this international research center. (2/3 page)

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

    E-Print Network [OSTI]

    Thomas Schwetz

    2006-11-20

    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.

  6. HIGH RADIATION TO MATERIALS HIRADMAT@SPS A NEW IRRADIATION FACILITY AT CERN FOR

    E-Print Network [OSTI]

    McDonald, Kirk

    HIGH RADIATION TO MATERIALS ­ HIRADMAT@SPS A NEW IRRADIATION FACILITY AT CERN FOR MATERIAL TESTING Ilias E(hymiopoulos, CERN 4th HPTWorkshop - Malmoe , May 6, 2011 of intense pulsed beams on materials } Thermal management (hea8ng) } material damage even

  7. HiRadMat at CERN SPS: A dedicated inbeam test facility

    E-Print Network [OSTI]

    McDonald, Kirk

    HiRadMat at CERN SPS: A dedicated inbeam test facility http://cern.ch/hiradmat Adrian Fabich 5th accelerator studies and applications. HighRadiation to Materials · Dedicated facility · Moving away from adhoc. Fabich 8 #12;Facility services Provision of dedicated irradiation infrastructure · Preparation lab

  8. REFINING AND END USE STUDY OF COAL LIQUIDS

    SciTech Connect (OSTI)

    Unknown

    2002-01-01

    This document summarizes all of the work conducted as part of the Refining and End Use Study of Coal Liquids. There were several distinct objectives set, as the study developed over time: (1) Demonstration of a Refinery Accepting Coal Liquids; (2) Emissions Screening of Indirect Diesel; (3) Biomass Gasification F-T Modeling; and (4) Updated Gas to Liquids (GTL) Baseline Design/Economic Study.

  9. Off-balance-sheet financing to the refining industry

    SciTech Connect (OSTI)

    Jenkins, J.H. [Pace Consultants Inc., Houston, TX (United States)

    1995-09-01

    Off-balance-sheet lending, or project finance, is becoming an increasingly popular means of capital formation in the refining and petrochemical industries. However, these transactions are substantially different from traditional corporate lending, and the demands placed on the borrower to examine, substantiate, and support the project are far greater. The following paper examines ways in which international banks and other lenders evaluate off-balance-sheet refinery projects and suggests ways to better structure financial representations.

  10. 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 on Delicious Rank EERE: Alternative FuelsofProgram: Report Appendices |ProjectKnowRedox Shuttle Additive, WinsRefining

  11. Emergent Properties Do Not Refine Fiona Polack, Susan Stepney1,2

    E-Print Network [OSTI]

    Stepney, Susan

    Emergent Properties Do Not Refine Fiona Polack, Susan Stepney1,2 Department of Computer Science a demonstrably-correct development from an abstract specification. Emergent systems present an interesting to the traditional model of refinement. Keywords: Emergence, Refinement, Systems Engineering. 1 Introduction Our

  12. 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

  13. Lattice refining loop quantum cosmology, anisotropic models, and stability

    SciTech Connect (OSTI)

    Bojowald, Martin; Cartin, Daniel; Khanna, Gaurav [Institute for Gravitation and the Cosmos, Pennsylvania State University, 104 Davey Lab, University Park, Pennsylvania 16802 (United States); Naval Academy Preparatory School, 197 Elliot Street, Newport, Rhode Island 02841 (United States); Physics Department, University of Massachusetts at Dartmouth, North Dartmouth, Massachusetts 02747 (United States)

    2007-09-15

    A general class of loop quantizations for anisotropic models is introduced and discussed, which enhances loop quantum cosmology by relevant features seen in inhomogeneous situations. The main new effect is an underlying lattice which is being refined during dynamical changes of the volume. In general, this leads to a new feature of dynamical difference equations which may not have constant step-size, posing new mathematical problems. It is discussed how such models can be evaluated and what lattice refinements imply for semiclassical behavior. Two detailed examples illustrate that stability conditions can put strong constraints on suitable refinement models, even in the absence of a fundamental Hamiltonian which defines changes of the underlying lattice. Thus, a large class of consistency tests of loop quantum gravity becomes available. In this context, it will also be seen that quantum corrections due to inverse powers of metric components in a constraint are much larger than they appeared recently in more special treatments of isotropic, free scalar models where they were artificially suppressed.

  14. Parallel Block Structured Adaptive Mesh Refinement on Graphics Processing Units

    SciTech Connect (OSTI)

    Beckingsale, D. A. [Atomic Weapons Establishment (AWE), Aldermaston (United Kingdom); Gaudin, W. P. [Atomic Weapons Establishment (AWE), Aldermaston (United Kingdom); Hornung, R. D. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Gunney, B. T. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Gamblin, T. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Herdman, J. A. [Atomic Weapons Establishment (AWE), Aldermaston (United Kingdom); Jarvis, S. A. [Atomic Weapons Establishment (AWE), Aldermaston (United Kingdom)

    2014-11-17

    Block-structured adaptive mesh refinement is a technique that can be used when solving partial differential equations to reduce the number of zones necessary to achieve the required accuracy in areas of interest. These areas (shock fronts, material interfaces, etc.) are recursively covered with finer mesh patches that are grouped into a hierarchy of refinement levels. Despite the potential for large savings in computational requirements and memory usage without a corresponding reduction in accuracy, AMR adds overhead in managing the mesh hierarchy, adding complex communication and data movement requirements to a simulation. In this paper, we describe the design and implementation of a native GPU-based AMR library, including: the classes used to manage data on a mesh patch, the routines used for transferring data between GPUs on different nodes, and the data-parallel operators developed to coarsen and refine mesh data. We validate the performance and accuracy of our implementation using three test problems and two architectures: an eight-node cluster, and over four thousand nodes of Oak Ridge National Laboratory’s Titan supercomputer. Our GPU-based AMR hydrodynamics code performs up to 4.87× faster than the CPU-based implementation, and has been scaled to over four thousand GPUs using a combination of MPI and CUDA.

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

    E-Print Network [OSTI]

    Latham, Peter

    of Technology in Pasadena, is on a mission to get policy- makers to face the need for sources of clean energy- ger catastrophic changes in Earth's climate, Lewis says, "is unarguably the greatest technological with rising energy demand--let alone to replace oil, natural gas, and coal. Generating 10 TW of energy

  16. Proposal for the award of a contract for civil engineering consultancy services for a possible CERN neutrino facility

    E-Print Network [OSTI]

    2013-01-01

    Proposal for the award of a contract for civil engineering consultancy services for a possible CERN neutrino facility

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

    E-Print Network [OSTI]

    2013-01-01

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

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

    E-Print Network [OSTI]

    2011-01-01

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

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

    E-Print Network [OSTI]

    1999-01-01

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

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

    E-Print Network [OSTI]

    2014-01-01

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

  1. Determination of the neutron fluence, the beam characteristics and the backgrounds at the CERN-PS TOF facility

    E-Print Network [OSTI]

    CERN. Geneva. ISOLDE and Neutron Time-of-Flight Experiments Committee; Andriamonje, Samuel A; Angelopoulos, Angelos; Assimakopoulos, P A; Audouin, L; Badurek, G; Bakos, G A; Bauge, E; Baumann, P; Beer, H; Benlliure, J; Benlloch, J M; Boffi, S; Boiano, A; Borcea, C; Brusegan, A; Buono, S; Calviño, F; Cambronero, C F; Cano-Ott, D; Cennini, P; Charpak, Georges; Chepel, V Yu; Colonna, N; Cortés, G; Corvi, F; Cura, J L; Czajkowski, S; Dasso, C H; David, S; De Blas, A; Delaroche, J P; Del Moral, R; De Poli, M; Della Mea, G; Derré, J; Díez, S; Dolfini, R; Durán, I; Eleftheriadis, C; Embid-Segura, M; Farget, F; Ferreira-Marques, R; Ferrari, A; Furman, W I; Goverdovski, A A; Guamegna, F; Griesmayer, E; Grudzevich, O; Guber, K H; Gundrorin, N; Gunsing, F; Hage-Ali, M; Haight, B; Harissopoulos, S V; Heil, M; Ioannides, K G; Ioannou, P; Isaev, S; Jastrzebski, J J; Jericha, E; Kadi, Y; Käppeler, F K; Kalfas, C A; Karamanis, D; Kazakov, L; Kelic, A; Ketlerov, V; Kitis, G; Köhler, P E; Konovalov, V; Kopatch, I; Kossionides, E; Lacoste, V; Leal, L C; Leeb, H; Leprêtre, A; Lopes, M I; Lozano, M; Martínez-Val, J M; Mastinu, P F; Matteucci, M F; Matveev, D V; Mengoni, A; Meunier, R; Milazzo, P M; Mínguez-Torres, E; Mitrofanov, V P; Molina, A; Mordenti, R; Mutti, P; Napiorkowski, P J; Nicolis, N G; Nolte, R; Oberhummer, Heinz; Ordine, A; Pacati, F D; Pakou, A A; Papadopoulos, I M; Papaevangelou, T; Paradelis, T; Pavlik, A; Pavlopoulos, P; Perlado, J M; Piera, M; Piksaikin, V M; Plag, R; Plompen, A; Poch, A; Policarpo, Armando; Popov, A; Popov, Yu; Pretel, C; Quaranta, A; Quesada, J M; Radermacher, E; Radici, M; Raman, S; Rapp, W; Rauscher, T; Reifarth, R; Rigato, V; Rubbia, Carlo; Rudolf, G; Rullhusen, P; Rundberg, B; Sakelliou, L; Saldaña, F; Santos, D M; Sanz, J; Savvidis, E; Savvidis, S; Schuhmacher, H; Sedyshev, P V; Serov, D; Stéphan, C; Tagliente, G; Taín, J L; Tapia, C; Tassan-Got, L; Terrani, M; Terychny, R; Tsagas, N; Tzima, A; Vardaci, E; Ventura, A; Villamarín, D; Vlachoudis, V; Voinov, A V; Voss, F; Weigmann, H; Wendler, H; Wiescher, M C; Wisshak, K; Zeinalov, S S

    2000-01-01

    Determination of the neutron fluence, the beam characteristics and the backgrounds at the CERN-PS TOF facility

  2. Adjudication of a Contract for the Supply and Installation of an Uninterruptible Power Supply for the CERN Computer Centre

    E-Print Network [OSTI]

    1977-01-01

    Adjudication of a Contract for the Supply and Installation of an Uninterruptible Power Supply for the CERN Computer Centre

  3. videoconference, 3rd May 2005 A.Fabich, CERN 1 Nitrogen release from the TT2A

    E-Print Network [OSTI]

    McDonald, Kirk

    videoconference, 3rd May 2005 A.Fabich, CERN 1 Nitrogen release from the TT2A cryogenic solenoid systems A.Fabich CERN AB-ATB, Switzerland Videoconference, 3rd May 2005 #12;videoconference, 3rd May 2005;videoconference, 3rd May 2005 A.Fabich, CERN 3 Restrictions to nitrogen release NO release of activated LN2

  4. Civil Engineering Feasibility Studies for Future Ring Colliders at CERN

    E-Print Network [OSTI]

    Bruning, O; Myers, S; Osborne, J; Rossi, L; Waaijer, C; Zimmermann, F

    2013-01-01

    CERN civil engineers are studying the feasibility of several potential ring colliders to complement the LHC: an 80km circular tunnel to house the TLEP and VHE-LHC, and the ring-ring and linac-ring options for the LHeC. The feasibility of these projects is largely dependent on civil design and geotechnical and environmental risks. As civil infrastructure works typically represent one third of the cost of major physics projects, it is critical that the construction costs are well understood from the conceptual stage. This proceeding presents the first results of the feasibility studies for the 80km tunnel and the linac-ring LHeC. Presented at IPAC'13 Shanghai, 12-17 May 2013

  5. News from CERN, LHC Status and Strategy for Linear Colliders

    E-Print Network [OSTI]

    Rolf-Dieter Heuer

    2012-02-27

    This paper presents the latest development at CERN, concentrating on the status of the LHC and the strategy for future linear colliders. The immediate plans include the exploitation of the LHC at its design luminosity and energy as well as upgrades to the LHC (luminosity and energy) and to its injectors. This may be complemented by a linear electron-positron collider, based on the technology being developed by the Compact Linear Collider and by the International Linear Collider and/or by a high-energy electron-proton collider. This contribution describes the various future directions, all of which have a unique value to add to experimental particle physics, and concludes by outlining key messages for the way forward.

  6. Charmed-hadron fragmentation functions from CERN LEP1 revisited

    SciTech Connect (OSTI)

    Kniehl, Bernd A.; Kramer, Gustav

    2006-08-01

    In Phys. Rev. D 58, 014014 (1998) and 71, 094013 (2005), we determined nonperturbative D{sup 0}, D{sup +}, D*{sup +}, D{sub s}{sup +}, and {lambda}{sub c}{sup +} fragmentation functions, both at leading and next-to-leading order in the MS factorization scheme, by fitting e{sup +}e{sup -} data taken by the OPAL Collaboration at CERN LEP1. The starting points for the evolution in the factorization scale {mu} were taken to be {mu}{sub 0}=2m{sub Q}, where Q=c, b. For the reader's convenience, in this paper, we repeat this analysis for {mu}{sub 0}=m{sub Q}, where the flavor thresholds of modern sets of parton density functions are located.

  7. Synthesis and Rietveld refinement of the small-pore zeolite SSZ-16

    SciTech Connect (OSTI)

    Lobo, R.F.; Zones, S.I.; Medrud, R.C.

    1996-10-01

    Recent research efforts invested in the synthesis of new high-silica zeolites have yielded several novel materials with medium ({approximately}5.6 {Angstrom}) and large ({approximately}7.2 {Angstrom}) pores. Examples include new zeolites with intersecting 10 and 12 member rings-i.e., pores bounded by 10 and 12 tetrahedral (T) atoms respectively-like SSZ-26, NU-87, SSZ-37, SSZ-25, MCM-22, CIT-1 (CON), and the aluminophosphate-based DAF-1 (DFO). However, except for the zeolites SSZ-28 (DDR) and SSZ-13 (CHA), no new high-silica zeolites with small pores have been reported. High-silica small-pore zeolites could be potentially useful for several catalytic reactions including the synthesis of dimethylamine, the reduction of NO{sub x} from combustion gases and the dewaxing of fuels for octane upgrading. The authors present here the synthesis and structural characterization using Rietveld refinement of synchrotron X-ray powder diffraction data of the zeolite SSZ-16. 27 refs., 3 figs., 2 tabs.

  8. ,"Weekly Refiner Net Production"

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Informationmonthly gasoline price to fall to $3.43U.S.longecReformulated GasolineSalesBlender NetRefiner

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

    Reports and Publications (EIA)

    2006-01-01

    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.

  10. Cogeneration handbook for the petroleum refining industry. [Contains glossary

    SciTech Connect (OSTI)

    Fassbender, L.L.; Garrett-Price, B.A.; Moore, N.L.; Fassbender, A.G.; Eakin, D.E.; Gorges, H.A.

    1984-03-01

    The decision of whether to cogenerate involves several considerations, including technical, economic, environmental, legal, and regulatory issues. Each of these issues is addressed separately in this handbook. In addition, a chapter is included on preparing a three-phase work statement, which is needed to guide the design of a cogeneration system. In addition, an annotated bibliography and a glossary of terminology are provided. Appendix A provides an energy-use profile of the petroleum refining industry. Appendices B through O provide specific information that will be called out in subsequent chapters.

  11. Bandwidth Study U.S. 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 Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based Fuels Researchof Energy and Forest ServicePower andPetroleum Refining

  12. Midcourse Refinements of Financing Strategies | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAand DOE SafetyofDepartment. "National Midcourse Refinements of

  13. Genealogy of major U.S. refiners - Energy Information Administration

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1Markets See full Genealogy of Major U.S. Refiners

  14. Centralized Data Engineering for the Monitoring of the CERN Electrical Network

    E-Print Network [OSTI]

    Kiourkos, A; Gonzalez-Berges, M; Infante, S; Tournier, J-C

    2014-01-01

    The monitoring and control of the CERN electrical network consists of a great variety of devices and software: it spans from low level acquisition devices to high level data concentrators, supervision systems as well as power network simulation tools.

  15. The Neutron_Time of Flight Facility at CERN: First Commissioning Results.

    E-Print Network [OSTI]

    Borcea, C; Cennini, P; Dahlfors, M; Dangenhorf, V; Ferrari, A; García-Muñoz, G; Kadi, Y; Lacoste, V; Nolte, R; Radermacher, E; Rubbia, Carlo; Saldaña, F; Vlachoudis, V; Zanini, L; CERN. Geneva. SPS and LHC Division

    2001-01-01

    Recently the CERN neutron spallation source became operational. Information concerning this new facility will be given as for installation, expected performances and physics program. Some preliminary results of the commisioning campaign of measurements will also be presented.

  16. 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

    2012-06-28

    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.

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

    Reports and Publications (EIA)

    2003-01-01

    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.

  18. Linkages between the markets for crude oil and the markets for refined products

    SciTech Connect (OSTI)

    Didziulis, V.S.

    1990-01-01

    To understand the crude oil price determination process it is necessary to extend the analysis beyond the markets for petroleum. Crude oil prices are determined in two closely related markets: the markets for crude oil and the markets for refined products. An econometric-linear programming model was developed to capture the linkages between the markets for crude oil and refined products. In the LP refiners maximize profits given crude oil supplies, refining capacities, and prices of refined products. The objective function is profit maximization net of crude oil prices. The shadow price on crude oil gives the netback price. Refined product prices are obtained from the econometric models. The model covers the free world divided in five regions. The model is used to analyze the impacts on the markets of policies that affect crude oil supplies, the demands for refined products, and the refining industry. For each scenario analyzed the demand for crude oil is derived from the equilibrium conditions in the markets for products. The demand curve is confronted with a supply curve which maximizes revenues providing an equilibrium solution for both crude oil and product markets. The model also captures crude oil price differentials by quality. The results show that the demands for crude oil are different across regions due to the structure of the refining industries and the characteristics of the demands for refined products. Changes in the demands for products have a larger impact on the markets than changes in the refining industry. Since markets for refined products and crude oil are interrelated they can't be analyzed individually if an accurate and complete assessment of a policy is to be made. Changes in only one product market in one region affect the other product markets and the prices of crude oil.

  19. 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

    2007-01-01

    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.

  20. Radiological Characterization of TFA metallic tubes from CERN Accelerator Complex

    E-Print Network [OSTI]

    Saraiva, João Pedro de Carvalho; Carvalho, João

    The scope of this thesis consists in the radiological characterization of chilled water pipes used for air-conditioning and exposed to ionizing radiation in the PS accelerator, one of the CERN accelerators, for more than 40 years. Due to corrosion problems, the 1200 m of steel pipeline were removed from the PS tunnel during the long shutdowns between the years 2000 to 2004. The radiological characterization, that included the use of FLUKA Monte Carlo simulations and the JEREMY code, began in mid-2011 and revealed a radionuclide inventory with the presence of 55Fe as dominant radionuclide and 60Co as dominant gamma emitter. Due to operational reasons, only 5.5% of the pipeline were characterized for validation. In the course of this work it was found that the contribution of both aforementioned radionuclides corresponds to more than 90% of the total computed IRAS factor (Indice Radiologique d’Acceptation en Stokage). Two different methods were used for the characterization of the PS pipes, yielding two diffe...

  1. The CERN Accelerator Measurement Database: On The Road To Federation

    E-Print Network [OSTI]

    Roderick, C; Gourber Pace, M; Hoibian, N; Peryt, M

    2011-01-01

    The Measurement database, acting as short-term central persistence and front-end of the CERN accelerator Logging Service, receives billions of time-series data per day for 200,000+ signals. A variety of data acquisition systems on hundreds of front-end computers publish source data that eventually end up being logged in the Measurement database. As part of a federated approach to data management, information about source devices are defined in a Configuration database, whilst the signals to be logged are defined in the Measurement database. A mapping, which is often complex and subject to change/extension, is required in order to subscribe to the source devices, and write the published data to the corresponding named signals. Since 2005, this mapping was done by means of dozens of XML files, which were manually maintained by multiple persons, resulting in a configuration that was error prone. In 2010 this configuration was fully centralized in the Measurement database itself, reducing significantly the compl...

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

    E-Print Network [OSTI]

    Christos Eleftheriadis

    2007-06-05

    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.

  3. 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...

  4. 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...

  5. 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...

  6. 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...

  7. 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...

  8. Counterexample-Guided Abstraction Refinement for POND Planning Jonas Thiem and Robert Mattmuller and Manuela Ortlieb

    E-Print Network [OSTI]

    Teschner, Matthias

    Counterexample-Guided Abstraction Refinement for POND Planning Jonas Thiem and Robert Mattm to define abstractions (guar- anteeing over-approximations). A straightforward way for POND planning

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

    E-Print Network [OSTI]

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

    1999-01-01

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

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

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

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

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

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

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

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

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

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

  13. 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...

  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. Refining and classifying finite-time Lyapunov exponent ridges

    E-Print Network [OSTI]

    Allshouse, Michael R

    2015-01-01

    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.

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

    DOE Patents [OSTI]

    Schlichting, M.R.

    1994-11-22

    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.

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

    DOE Patents [OSTI]

    Schlichting, Mark R. (Chesterton, IN)

    1994-01-01

    A furnace 10 for smelting iron ore and/or refining molten iron 20 is equipped with an overhead pneumatic lance 40, through which a center stream of particulate coal 53 is ejected at high velocity into a slag layer 30. An annular stream of nitrogen or argon 51 enshrouds the coal stream. Oxygen 52 is simultaneously ejected in an annular stream encircling the inert gas stream 51. 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 84 to react with carbon monoxide gas rising from slag layer 30, thereby adding still more heat to the furnace.

  18. 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

    2014-04-01

    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.

  19. A comparative assessment of resource efficiency in petroleum refining

    SciTech Connect (OSTI)

    Han, Jeongwoo; Forman, Grant S.; Elgowainy, Amgad; Cai, Hao; Wang, Michael; DiVita, Vincent B.

    2015-03-25

    Because of increasing environmental and energy security concerns, a detailed understanding of energy efficiency and greenhouse gas (GHG) emissions in the petroleum refining industry is critical for fair and equitable energy and environmental policies. To date, this has proved challenging due in part to the complex nature and variability within refineries. In an effort to simplify energy and emissions refinery analysis, we delineated LP modeling results from 60 large refineries from the US and EU into broad categories based on crude density (API gravity) and heavy product (HP) yields. Product-specific efficiencies and process fuel shares derived from this study were incorporated in Argonne National Laboratory’s GREET life-cycle model, along with regional upstream GHG intensities of crude, natural gas and electricity specific to the US and EU regions. The modeling results suggest that refineries that process relatively heavier crude inputs and have lower yields of HPs generally have lower energy efficiencies and higher GHG emissions than refineries that run lighter crudes with lower yields of HPs. The former types of refineries tend to utilize energy-intensive units which are significant consumers of utilities (heat and electricity) and hydrogen. Among the three groups of refineries studied, the major difference in the energy intensities is due to the amount of purchased natural gas for utilities and hydrogen, while the sum of refinery feed inputs are generally constant. These results highlight the GHG emissions cost a refiner pays to process deep into the barrel to produce more of the desirable fuels with low carbon to hydrogen ratio.

  20. A comparative assessment of resource efficiency in petroleum refining

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

    Han, Jeongwoo; Forman, Grant S.; Elgowainy, Amgad; Cai, Hao; Wang, Michael; DiVita, Vincent B.

    2015-03-25

    Because of increasing environmental and energy security concerns, a detailed understanding of energy efficiency and greenhouse gas (GHG) emissions in the petroleum refining industry is critical for fair and equitable energy and environmental policies. To date, this has proved challenging due in part to the complex nature and variability within refineries. In an effort to simplify energy and emissions refinery analysis, we delineated LP modeling results from 60 large refineries from the US and EU into broad categories based on crude density (API gravity) and heavy product (HP) yields. Product-specific efficiencies and process fuel shares derived from this study weremore »incorporated in Argonne National Laboratory’s GREET life-cycle model, along with regional upstream GHG intensities of crude, natural gas and electricity specific to the US and EU regions. The modeling results suggest that refineries that process relatively heavier crude inputs and have lower yields of HPs generally have lower energy efficiencies and higher GHG emissions than refineries that run lighter crudes with lower yields of HPs. The former types of refineries tend to utilize energy-intensive units which are significant consumers of utilities (heat and electricity) and hydrogen. Among the three groups of refineries studied, the major difference in the energy intensities is due to the amount of purchased natural gas for utilities and hydrogen, while the sum of refinery feed inputs are generally constant. These results highlight the GHG emissions cost a refiner pays to process deep into the barrel to produce more of the desirable fuels with low carbon to hydrogen ratio.« less

  1. Entrevista con José Ramón Enríquez

    E-Print Network [OSTI]

    Loisel, Clary

    2002-10-01

    opresivo, la comparto con mucha gente en muchos sitios. Ese poder hoy se encarna en el neoliberalismo, que es el gran enemigo. Vivo en un país enormemente dolido, explotado en todos los sentidos. Formo parte de una minoría que tiene sus características... opresivo, la comparto con mucha gente en muchos sitios. Ese poder hoy se encarna en el neoliberalismo, que es el gran enemigo. Vivo en un país enormemente dolido, explotado en todos los sentidos. Formo parte de una minoría que tiene sus características...

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

    Reports and Publications (EIA)

    2006-01-01

    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.

  3. Abstraction and CounterexampleGuided Refinement in Model Checking of Hybrid Systems

    E-Print Network [OSTI]

    : Formal Verification, Abstraction, Model Checking, Hybrid Systems, Refinement, Counterexamples #12; 1Abstraction and Counterexample­Guided Refinement in Model Checking of Hybrid Systems Edmund Clarke a counterexample generated by the model checker. For hybrid systems, analysis of the counterexample requires

  4. Perspectives on Sustainable Materials, Instructor Susan Kaplan Fall 2014 Syllabus (subject to refining/updating)

    E-Print Network [OSTI]

    Wolberg, George

    Perspectives on Sustainable Materials, Instructor Susan Kaplan Fall 2014 Syllabus (subject to refining/updating) 1 SUS 7600A: Perspectives on Sustainable Materials Instructor: Susan Kaplan, LEED AP, Instructor Susan Kaplan Fall 2014 Syllabus (subject to refining/updating) 2 Primary Assignments: Basic

  5. Orientation Refinement of Virus Structures with Unknown Symmetry Yongchang Ji, Dan C. Marinescu

    E-Print Network [OSTI]

    Baker, Timothy S.

    Orientation Refinement of Virus Structures with Unknown Symmetry Yongchang Ji, Dan C. Marinescu, in particular the structure determina- tion of viruses and other large macromolecular complexes leads to data determina- tion of viruses, the orientation refinement. 1. Introduction and Motivation Viruses are large

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

    E-Print Network [OSTI]

    Patil, Sachin

    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

  10. Simulation of e-cloud driven instability and its attenuation using a simulated feedback system in the CERN SPS

    E-Print Network [OSTI]

    Vay, J.-L.

    2011-01-01

    system for the attenuation of e-cloud driven instability”, Proceed- ings Particle Acceleratorsystem for electron cloud-driven instabilities in the CERN SPS”, Proceedings Particle Accelerator

  11. 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-...

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

    E-Print Network [OSTI]

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

    2005-09-09

    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.

  13. Refining a relativistic, hydrodynamic solver: Admitting ultra-relativistic flows

    E-Print Network [OSTI]

    J. P. Bernstein; P. A. Hughes

    2009-07-23

    We have undertaken the simulation of hydrodynamic flows with bulk Lorentz factors in the range 10^2--10^6. We discuss the application of an existing relativistic, hydrodynamic primitive-variable recovery algorithm to a study of pulsar winds, and, in particular, the refinement made to admit such ultra-relativistic flows. We show that an iterative quartic root finder breaks down for Lorentz factors above 10^2 and employ an analytic root finder as a solution. We find that the former, which is known to be robust for Lorentz factors up to at least 50, offers a 24% speed advantage. We demonstrate the existence of a simple diagnostic allowing for a hybrid primitives recovery algorithm that includes an automatic, real-time toggle between the iterative and analytical methods. We further determine the accuracy of the iterative and hybrid algorithms for a comprehensive selection of input parameters and demonstrate the latter's capability to elucidate the internal structure of ultra-relativistic plasmas. In particular, we discuss simulations showing that the interaction of a light, ultra-relativistic pulsar wind with a slow, dense ambient medium can give rise to asymmetry reminiscent of the Guitar nebula leading to the formation of a relativistic backflow harboring a series of internal shockwaves. The shockwaves provide thermalized energy that is available for the continued inflation of the PWN bubble. In turn, the bubble enhances the asymmetry, thereby providing positive feedback to the backflow.

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

    ScienceCinema (OSTI)

    None

    2011-10-06

    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.

  15. 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)

    2014-02-15

    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.

  16. Construction required the expertise of architects and civil engineers CERN attracts both the young and old, including Claire Timlin from

    E-Print Network [OSTI]

    Construction required the expertise of architects and civil engineers CERN attracts both the young STFC funds the UK membership to CERN which enables UK scientists and engineers access to the vast has thanks to the LHC Engineering Success The LHC sits in a 27 km long tunnel, the construction

  17. 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 equalJ4.3 LARGE-EDDY SIMULATION ACROSS A GRID REFINEMENT INTERFACE USING EXPLICIT FILTERING

  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

    2012-06-28

    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; MacFadyen, Andrew I.; /Princeton, Inst. Advanced Study

    2005-06-06

    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. 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;

  1. ¿Qué pasa con el teatro de Venezuela?

    E-Print Network [OSTI]

    Castillo, Susana D.

    1973-01-01

    PASA CON EL TEATRO El\\l VENEZUELA? Lü nueva diaiiiatiirgiaRico contó con Cámara de Venezuela, grupo que presentó diuoallí que, a pesar de que Venezuela sea probablemente el país

  2. 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)

    1984-01-01

    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.

  3. Adjustable Speed Drives in the U.S. Petroleum Refining, Petrochemical, and Chemical Industries 

    E-Print Network [OSTI]

    Foley, D. J.; Chodorowski, A.

    1993-01-01

    This paper describes applications and incentives for the use of variable frequency drivers (VFD) in the petroleum refining, petrochemical, and chemical industries. VFDs are a particular type of adjustable speed driver (ASD) found prevalently...

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

    E-Print Network [OSTI]

    Im, Jae-taek

    2009-05-15

    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 ...

  5. An Assessment of carbon reduction technology opportunities in the petroleum refining industry.

    SciTech Connect (OSTI)

    Petrick, M.

    1998-09-14

    The refining industry is a major source of CO{sub 2} emissions in the industrial sector and therefore in the future can expect to face increasing pressures to reduce emission levels. The energy used in refining is impacted by market dictates, crude quality, and environmental regulations. While the industry is technologically advanced and relatively efficient opportunities nevertheless exist to reduce energy usage and CO{sub 2} emissions. The opportunities will vary from refinery to refinery and will necessarily have to be economically viable and compatible with each refiner's strategic plans. Recognizing the many factors involved, a target of 15-20% reduction in CO{sub 2} emissions from the refining sector does not appear to be unreasonable, assuming a favorable investment climate.

  6. Impact of Environmental Compliance Costs on U.S. Refining Profitability

    Reports and Publications (EIA)

    1997-01-01

    Assesses the effects of pollution abatement requirements on the financial performance of U.S. petroleum refining and marketing operations. The analysis draws heavily on financial and operating data from the Energy Information Administration's Financial Reporting System (FRS).

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

    E-Print Network [OSTI]

    Lacombe, Romain H

    2008-01-01

    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 ...

  8. Classical descriptive set theory as a refinement of effective descriptive set theory

    E-Print Network [OSTI]

    Moschovakis, Yiannis N.

    as a refinement of the classical theory of definability (on Polish spaces) developed in the first half of the 20th the notions I need, as well as (condensed) outlines of the required arguments. 1. Recursion in Baire space We

  9. Refinement of light-responsive transcript lists using rice oligonucleotide arrays: evaluation of gene-redundancy.

    E-Print Network [OSTI]

    2008-01-01

    Refinement of Light-Responsive Transcript Lists Using Riceleaves of two-week old plants grown in a natural light-darkcycle (light-grown) in comparison to RNA from October 2008 |

  10. Energy and Environmental Profile of the U.S. Petroleum Refining Industry

    SciTech Connect (OSTI)

    Pellegrino, Joan; Brueske, Sabine; Carole, Tracy; Andres, Howard

    2007-11-01

    This 2007 report provides an overview of the U.S. petroleum refining industry, including new data on market trends and energy and material consumption, as well as information on environmental performance.

  11. Hazard/Risk Assessment A REFINED AQUATIC ECOLOGICAL RISK ASSESSMENT FOR A PYRETHROID

    E-Print Network [OSTI]

    Peterson, Robert K. D.

    Hazard/Risk Assessment A REFINED AQUATIC ECOLOGICAL RISK ASSESSMENT FOR A PYRETHROID INSECTICIDE risk assessments, the authors performed a probabilistic aquatic ecological risk assessment. The present study is the first ecological risk assessment for pyrethroids to quantitatively integrate

  12. Overview of CERN Technology Transfer Strategy and Accelerator-Related Activities

    E-Print Network [OSTI]

    Chesta, E; Wuensch, W; Sgobba, S; Stora, T; Chiggiato, P; Taborelli, M

    2013-01-01

    CERN, the European Organization for Nuclear Research, is actively engaged in identifying technologies developed for its accelerator complex that could be profitably used by partner research organizations or commercial companies in applications with potentially high socio-economic impact beyond pure fundamental physics research. \

  13. arXiv:0906.5418 CERN-OPEN-2009-007

    E-Print Network [OSTI]

    Wechsler, Risa H.

    of scholarly articles either before publication, or simultaneously, or 1 Anne.Gentil-Beccot@cern.ch 2 Salvatore, to when scholars sent preprints (manuscripts of their publications which had not yet appeared in peer States of America Abstract Contemporary scholarly discourse follows many alternative routes in addition

  14. A Nuclear Physics Program at the ATLAS Experiment at the CERN Large Hadron Collider

    E-Print Network [OSTI]

    S. Aronson; K. Assamagan; H. Gordon; M. Leite; M. Levine; P. Nevski; H. Takai; S. White; B. Cole; J. L. Nagle

    2002-12-13

    The ATLAS collaboration has significant interest in the physics of ultra-relativistic heavy ion collisions. We submitted a Letter of Intent to the United States Department of Energy in March 2002. The following document is a slightly modified version of that LOI. More details are available at: http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/SM/ions

  15. PARALLEL COMPILATION OF CMS SOFTWARE Shaun Ashby, Giulio Eulisse, Lassi A. Tuura (CERN, Geneva, Switzerland)

    E-Print Network [OSTI]

    PARALLEL COMPILATION OF CMS SOFTWARE Shaun Ashby, Giulio Eulisse, Lassi A. Tuura (CERN, Geneva distributed compilation using spare cycles of available machines (running GNU/Linux). This document is organized as follows: In this introduc- tory part we first describe the "classic" compilation process

  16. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN SL/2000-065 AP

    E-Print Network [OSTI]

    Keil, Eberhard

    is super-conducting, the others are at room temperature, and the RF frequencies of the main linac range Test Facility TTF at DESY, three modules of eight super- conducting RF cavities were tested. BetweenEUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN SL/2000-065 AP Future Colliders Eberhard Keil

  17. The MERIT High-Power Target Experiment at the CERN PS

    SciTech Connect (OSTI)

    McDonald, K.T.; /Princeton U.; Kirk, H.G.; Park, H.; Tsang, T.; /Brookhaven; Efthymiopoulos, I.; Fabich, A.; Haug, F.; Lettry, J.; Palm, M.; Pereira, H.; /CERN; Mokhov, N.; /Fermilab /Oak Ridge /Princeton U., Plasma Physics Lab. /Rutherford

    2010-05-01

    We report on the analysis of data collected in the MERIT experiment at CERN during the Fall of 2007. These results validate the concept of a free mercury jet inside a high-field solenoid magnet as a target for a pulsed proton beam of 4-MW power, as needed for a future Muon Collider and/or Neutrino Factory.

  18. CERN with ITER, by Franois of Rose THE WORLD | 03.02.04 | 14h06

    E-Print Network [OSTI]

    by the foreign politics of the France in 2003, most serious, and by far, is that which would be finalized of the agreement of renunciation of Libya of the nuclear weapons concluded with the Anglo-American ones and major, at the free-Switzerland border, of the CERN (European Center for the nuclear research) at the beginning

  19. CERN-INTC-2013-022/INTC-P-382 EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH

    E-Print Network [OSTI]

    for Nuclear Physics, Heidelberg, Germany 2Uppsala University, Department of Physics and Astronomy, Uppsala, Sweden 3KU Leuven, Leuven, Belgium 4Istanbul University, Department of Physics, Istanbul, Turkey 5H, Darmstadt, Germany 7FAIR GmbH, Darmstadt, Germany 8Universit´e de Paris Sud, Orsay, France 9CERN, Geneva

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

    E-Print Network [OSTI]

    . N. Wolf8 , K. Zuber9 1Max Planck Institute for Nuclear Physics, Heidelberg, Germany 2GSI Helmholtzzentrum f¨ur Schwerionenforschung GmbH, Darmstadt, Germany 3IKS Leuven, Belgium 4Department of Physics, University of Istanbul, Istanbul, Turkey 5CERN, Geneva, Switzerland 6CSNSM-IN2P3-CNRS, Universit´e de Paris

  1. Un error en los calculos matematicos destroza el acelerador de particulas del CERN

    E-Print Network [OSTI]

    Cernuda, Olalla

    2007-01-01

    The most famous particle accelerator in the world, who is at CERN, has suffered a catastrophic damage after a great explosion took place in its depths. This explosion has an absolutely scientific explanation: a mathematical mistake in the design of the anchorages of great magnets. (1 page)

  2. EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN SL/2000-005 AP

    E-Print Network [OSTI]

    Keil, Eberhard

    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN SL/2000-005 AP Collective Effects in High is absent. I derive criteria for the longitudinal and transverse loss factors. 2 AN-ISOCHRONOUS HEMC An at collision energy in a Mathematica notebook [8] that I have used for testing packages for the design

  3. Dos tardes con Carlos Solórzano

    E-Print Network [OSTI]

    Mé ndez-Faith, Teresa

    1984-10-01

    particular. En cuanto a la presencia de Albert Camus—cuya personalidad era fascinante y envolvente; era una personalidad total, de pensador, de poeta, de gran prosista—, él, en suma, no era más que el resultado de todo un ambiente cultural escéptico que... cuanto a Albert Camus y a Michel de Ghelderode—a quien conocí personalmente—, ambos recogían de alguna manera la herencia hispánica y por eso siempre sentí una gran afinidad por ellos. Tanto Camus como Ghelderode—sobre todo éste, con su mundo...

  4. Una tarde con Héctor Mendoza

    E-Print Network [OSTI]

    Padró n-Leó n, Bá rbara A.; Peale, C. George

    1999-10-01

    amabilísimo y gran amigo de él fue Tirso de Molina, monje mercedario. Entonces, lo que yo me imaginé primero era como un colegio de monjes mercedarios haciéndole una obra homenaje a Ruíz de Alarcón, representando como a la memoria de Ruíz de Alarcón con... años que quedan de esta década? No lo sé. Nunca hago planes a largo plazo, y mucho menos ahora que ya estoy viejo y me puedo morir en cualquier momento. Yo planeo lo inmediatamente próximo que voy a hacer, lo próximo nada más. En estos momentos...

  5. 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1 Table 1.101Company Level Imports ExplanatoryCon

  6. 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

  7. A comparison of the performance of waterfloods using similar refined and crude oils 

    E-Print Network [OSTI]

    Walton, Daylon Lynn

    1960-01-01

    A COMPARISON OF THE PERFORMANCE OF WATERFI, GODS USING SIMILAR REFINED AND CRUDE OILS A Thesis By DAYLON L. WALTON Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August, 1960 Major Subject: PETROLEUM ENGINEERING A COMPARISON OF THE PERFORMANCE OF WATERFLOODS USING SIMILAR REFINED AND CRUDE OILS A Thesis By DAYLON L. WALTON Approved as to style and content by: (Chairman f...

  8. An adaptive grid refinement strategy for the simulation of negative streamers

    SciTech Connect (OSTI)

    Montijn, C. . E-mail: carolynne.montijn@cwi.nl; Hundsdorfer, W. . E-mail: willem.hundsdorfer@cwi.nl; Ebert, U. . E-mail: ute.ebert@cwi.nl

    2006-12-10

    The evolution of negative streamers during electric breakdown of a non-attaching gas can be described by a two-fluid model for electrons and positive ions. It consists of continuity equations for the charged particles including drift, diffusion and reaction in the local electric field, coupled to the Poisson equation for the electric potential. The model generates field enhancement and steep propagating ionization fronts at the tip of growing ionized filaments. An adaptive grid refinement method for the simulation of these structures is presented. It uses finite volume spatial discretizations and explicit time stepping, which allows the decoupling of the grids for the continuity equations from those for the Poisson equation. Standard refinement methods in which the refinement criterion is based on local error monitors fail due to the pulled character of the streamer front that propagates into a linearly unstable state. We present a refinement method which deals with all these features. Tests on one-dimensional streamer fronts as well as on three-dimensional streamers with cylindrical symmetry (hence effectively 2D for numerical purposes) are carried out successfully. Results on fine grids are presented, they show that such an adaptive grid method is needed to capture the streamer characteristics well. This refinement strategy enables us to adequately compute negative streamers in pure gases in the parameter regime where a physical instability appears: branching streamers.

  9. Refining: moods and modes for 1984. [From NPRA meeting, San Antonio, TX 3/84

    SciTech Connect (OSTI)

    Not Available

    1984-04-11

    Thousands of refining experts met in March in San Antonio, TX at the 82nd meeting of the National Petroleum Refiners Association, including many international oil-industry officials and executives. For major US refiners, the mood was decidedly optimistic, because: (1) for a number of refiners, negative margins on many crude oils that persisted even after the March 1983 price adjustment by OPEC are finally improving as capacities for upgrading residual fuel into more-valuable light products continue to come onstream; and (2) multinational oil companies, while concerned about downstream market penetration by producing countries, nevertheless expressed the feeling that this would probably further reduce the negotiating power of OPEC. For smaller, nonmajor refiners, the mood was one of concern: in the US, 97 refineries have officially closed since 1981, most of them smaller, inefficient facilities. There was optimism by all about environmental and social concerns, specifically acid rain and lead pollution. For the national oil companies of less-developed countries, a vicious circle emerged concerning the economic ramifications of the continuing development of catalysts for cracking heavy feedstock. This issue presents the fuel price/tax series and industrial fuel prices for March 1984 for countries of the Eastern Hemisphere.

  10. Construcciones con regla y compas 1 Introduccion

    E-Print Network [OSTI]

    Cortiñas, Guillermo

    Construcciones con regla y comp´as Juan Sabia 1 Introducci´on La idea de esta clase es ver qu´e construcciones geom´etricas pueden hacerse con el uso de una regla no graduada (sin marcas), de un comp´as, de un´angulos con regla y comp´as. La pregunta es qu´e otras construcciones se pueden hacer. Los griegos ya tenan

  11. BEAM TEST of the ATLAS SILICON DETECTOR MODULES with BINARY READOUT in the CERN H8 BEAM in 1996 1

    E-Print Network [OSTI]

    BEAM TEST of the ATLAS SILICON DETECTOR MODULES with BINARY READOUT in the CERN H8 BEAM in 1996 1 F, Spain, 21 Univ. of Wisconsin, Madison, WI, USA ABSTRACT Results are reported from a beam test

  12. DIVERSAS MANERAS DE GENERAR ENERGIA CON

    E-Print Network [OSTI]

    Gilbes, Fernando

    ;PAISES CON MAYOR CAPACIDAD HIDROELECTRICA Country Annual Hydroelectric Energy Production (TW-Rivera #12;The Three Gorges Dam project in Hubei, China, is the world's largest hydroelectric generating

  13. SPS WANF Dismantling: A Large Scale-Decommissioning Project at CERN

    E-Print Network [OSTI]

    Evrard, S; Conan, N; De Paoli, D; Efthymiopoulos, I; Fumey, S; Gaillard, H; Grenard, J L; Grenier, D; Pardons, A; Paulat, E; Seraphin, Y; Tavlet, M; Theis, C; Vincke, H

    2011-01-01

    The operation of the SPS (Super Proton Synchrotron) West Area Neutrino Facility (WANF) was halted in 1998. In 2010 a large scale-decommissioning of this facility was conducted. Besides CERN’s commitment to remove non-operational facilities, the additional motivation was the use of the installation (underground tunnels and available infrastructure) for the new HiRadMat facility, which is designed to study the impact of high-intensity pulsed beams on accelerator components and materials. The removal of 800 tons of radioactive equipment and the waste management according to the ALARA (As Low As Reasonably Achievable) principles were two major challenges. This paper describes the solutions implemented and the lessons learnt confirming that the decommissioning phase of a particle accelerator must be carefully studied as from the design stage.

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

    E-Print Network [OSTI]

    Vojtyla, P

    2002-01-01

    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.

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

    E-Print Network [OSTI]

    Vojtyla, P

    2005-01-01

    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.

  16. Medium Power 352 MHZ solid state pulsed RF amplifiers for the CERN LINAC4 Project

    E-Print Network [OSTI]

    Broere, J; Gómez Martínez, Y; Rossi, M

    2011-01-01

    Economic, modular and highly linear pulsed RF amplifiers have recently been developed to be used for the three buncher cavities in the CERN Linac4. The amplifiers are water-cooled and can provide up to 33 kW pulsed RF Power, 1.5 ms pulse length and 50 Hz repetition rate. Furthermore a 60 kW unit is under construction to provide the required RF Power for the debuncher cavity. The concept is based on 1.2 kW RF power modules using the latest 6th generation LDMOS technology. For integration into the CERN control environment the amplifiers have an internal industrial controller, which will provide easy control and extended diagnostic functions. This paper describes the construction, performance, including linearity, phase stability and EMC compliance tests

  17. GPUs for the realtime low-level trigger of the NA62 experiment at CERN

    E-Print Network [OSTI]

    Ammendola, R; Biagioni, A; Chiozzi, S; Cotta Ramusino, A; Fantechi, R; Fiorini, M; Gianoli, A; Graverini, E; Lamanna, G; Lonardo, A; Messina, A; Neri, I; Pantaleo, F; Paolucci, P S; Piandani, R; Pontisso, L; Simula, F; Sozzi, M; Vicini, P

    2015-01-01

    A pilot project for the use of GPUs (Graphics processing units) in online triggering ap- plications for high energy physics experiments (HEP) is presented. GPUs offer a highly parallel architecture and the fact that most of the chip resources are devoted to computa- tion. Moreover, they allow to achieve a large computing power using a limited amount of space and power. The application of online parallel computing on GPUs is shown for the synchronous low level trigger of NA62 experiment at CERN. Direct GPU communication using a FPGA-based board has been exploited to reduce the data transmission latency and results on a first field test at CERN will be highlighted. This work is part of a wider project named GAP (GPU application project), intended to study the use of GPUs in real-time applications in both HEP and medical imagin

  18. Obtaining the Specific Heat of Hadronic Matter from CERN/RHIC Experiments

    E-Print Network [OSTI]

    Aram Mekjian

    2005-03-03

    The specific heat of hot hadronic matter is related to particle production yields from experiments done at CERN/RHIC. The mass fluctuation of excited hadrons plays an important role. Connections of the specific heat, mean hadronic mass excited and its fluctuation with properties of baryon and electric chemical potentials (value, slope and curvature) are also developed. A possible divergence of the specific heat as 1/(To-T)^2 is discussed. Some connections with net charge fluctuations are noted.

  19. Integration of CATIA/Smarteam into CERN's corporate engineering data management system

    E-Print Network [OSTI]

    Hakulinen, Timo; Friman, Per Olof; Pettersson, Thomas Sven; Van Uytvinck, E; Widegren, David; Fournier, G

    2008-01-01

    We present a short overview of the strategy defined to integrate the 3D CAD system CATIA/Smarteam into CERN's corporate Engineering and Equipment Data Management System (EDMS), which is used to manage the information about the Laboratory's installations and technical infrastructure. A brief description of the existing EDMS architecture is given, describing the available project life cycle management features, including CATIA/Smarteam. An overview of the design office requirements on the new CAD system is also presented.

  20. Irradiation Studies of Optical Components CERN, ~ April 15-24, 2005

    E-Print Network [OSTI]

    McDonald, Kirk

    Irradiation Studies of Optical Components 43 2 5 1 CERN, ~ April 15-24, 2005 1 GeV proton beam 4 x 10 15 proton Irradiation dose: equivalent to 40 pulses of 24 GeV proton beam Received radiation dose: 3231 Gy, ~ 3.2 x 105 rad or 3.2 x 106 rem (assume a quality factor of 10) #12;Before irradiation April

  1. RF Power Production at the Two Beam Test Stand at CERN

    E-Print Network [OSTI]

    Syratchev, I

    2013-01-01

    The generation of short (250 ns) high peak power (135 MW) RF pulses by decelerating a high current (100 A) bunched (12 GHz) drive beam is one of the key components in the CLIC two beam acceleration scheme. Recent tests with drive beam deceleration at CERN's CTF3, using specially developed 1 m long CLIC Power Extraction and Transfer Structure (PETS) operated in a re-circulation regime have successfully demonstrated this concept. The results of these tests are presented.

  2. 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)

    2014-01-01

    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.

  3. Longitudinal beam diagnostic from a distributed electrostatic pick-up in CERN's ELENA ring

    E-Print Network [OSTI]

    Angoletta, M E; Federmann, S; Molendijk, J; Sanchez-Quesada, J; Secouet, P J; Søby, L; Pedersen, F; Timmins, M

    2013-01-01

    The CERN 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). Required longitudinal diagnostics include the intensity measurement for bunched and debunched beam and the measurement of Dp/p to assess the electron cooling performance. A novel method for the calculation of these parameters is proposed for ELENA, where signals from the twenty electrostatic Pick-Ups (PU) used for orbit measurements will be combined to improve the signal-to-noise ratio. This requires that the signals be digitally down-converted, rotated and summed so that the many electrostatic PUs will function as a single, distributed PU from the processing system viewpoint. This method includes some challenges and will not be used as the baseline longitudinal diagnostics for the initial ELENA operation. This paper gives an overview of the hardware and digital signal processing involved, as well as of the challenges t...

  4. La neutrino factory del CERN e i problemi radiologici dell'annesso proton driver

    E-Print Network [OSTI]

    Bressan, Beatrice Alessandra

    2001-01-01

    The thesis, La Neutrino Factory del CERN e i problemi radiologici dell’annesso proton driver (CERN Neutrino Factory and the radiological problems of the annex proton driver), deals with the new particle accelerators for the post LHC (Large Hadron Collider) era. The first part of the work describes these innovative accelerators with particular emphasis on the muon collider which, producing ?+/?? collisions in the 100 GeV energy range, should explore deeply the Higgs Boson physics. The second part of the thesis describes the three-step scenario proposed for the muon accelerators: Neutrino Factory, Higgs Factory and a collider with TeV C.M. energy. The third chapter explains how a Neutrino Factory works. In a Neutrino Factory the neutrino beam is generated by high-energy muons decaying in a storage ring. The muons are produced by pions generated in a target bombarded by an intense proton beam. In the CERN project, the proton beam is produced by a super conducting LINAC (with 75 Hz frequency and 2.2 GeV ene...

  5. 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)

    2014-12-01

    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.

  6. 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

    1999-08-01

    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.

  7. The atomic structure of the cleaved Si(111)-(2x1) surface refined by dynamical LEED

    E-Print Network [OSTI]

    2004-01-01

    Surface Crystallography by LEED”, p.30, Spinger-Verlag, Bby automated tensor LEED (the number of optimized parametersSurface Refined by Dynamical LEED Geng Xu, Bingcheng Deng,*

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

    E-Print Network [OSTI]

    Patel, Manubhai Chunibhai

    1956-01-01

    LIBRARY A 4 AI CvLLEGE OF TEXAS LIOVID-LIQUID EXTRACTION AS THE MEANS OI REFINING CCTTONSEFZ OIL A Thesis By 1'RVUBHAI CHIINIBHAI PATEL a 0 U z A R 0 Submitted to the Graduate School of the Agricultural and Mechanical College of Texas... in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Auuust 1996 Major Subject Chemical ineeri LIQUID-LIQUID EXTRACTION AS THE MEANS OF REFINING COTTONSEED OIL A Thesis By MANUBHAI CHUNIBHAI PATEL Approved as to style...

  9. Classification of remotely sensed imagery using stochastic gradient boosting as a refinement of classification tree analysis

    E-Print Network [OSTI]

    Lawrence, Rick L.

    trees) are increasingly being used for analysis and classification of remotely sensed digital imageryClassification of remotely sensed imagery using stochastic gradient boosting as a refinement of classification tree analysis Rick Lawrencea,*, Andrew Bunna , Scott Powellb , Michael Zambona a Department

  10. 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)

    2008-01-01

    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.

  11. 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.

    2007-04-29

    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.

  12. 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 in process control to the more thoroughly studied Flight Management System (FMS) employed in airline cockpits and challenging task. Keywords: Cognitive task analysis; Process control; Predictive control; Optimization

  13. Industrial Ecology and LCA, Instructor Iddo Wernick Fall 2014 Syllabus (subject to refinement/updating)

    E-Print Network [OSTI]

    Wolberg, George

    Industrial Ecology and LCA, Instructor Iddo Wernick Fall 2014 Syllabus (subject to refinement/updating) 1 SUS-7300C INDUSTRIAL ECOLOGY AND LIFE CYCLE ANALYSIS Description: Students will be introduced to the purpose, philosophy, and applications of Industrial Ecology as they affect environmental and urban

  14. A TWODIMENSIONAL MOVING FINITE ELEMENT METHOD WITH LOCAL REFINEMENT BASED ON A POSTERIORI ERROR

    E-Print Network [OSTI]

    Cao, Weiming

    and Flaherty [1] to the two­dimensional case, where clusters of mesh points are built up and moved (middle), and rh­refinement with N = 541 yields e L2() = 1.57E-2 (right). While the r­method wastes too

  15. 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

  16. 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

  17. An Incremental Refining Spatial Join Algorithm for Estimating Query Results in GIS

    E-Print Network [OSTI]

    Leutenegger, Scott T.

    An Incremental Refining Spatial Join Algorithm for Estimating Query Results in GIS Wan D. Bae systems (GIS) must support large georeferenced data sets. Due to the size of these data sets finding ex this is the first work using this approach in GIS. We investigate different sampling method- ologies and evaluate

  18. Sustainable Soil and Water, Adjunct Professor Marcha Johnson Spring 2014 Syllabus (subject to refinement/updating)

    E-Print Network [OSTI]

    Wolberg, George

    Sustainable Soil and Water, Adjunct Professor Marcha Johnson Spring 2014 Syllabus (subject to refinement/updating) 1 Spring 2014 SUS- 7700A: SUSTAINABLE SOIL AND WATER Course: Sustainable Soil and Water water, and groundwater in urban settings; understanding floodplains; treating polluted brownfields

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

    Reports and Publications (EIA)

    1998-01-01

    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.

  20. Verification of Hybrid Systems Based on Counterexample-Guided Abstraction Refinement

    E-Print Network [OSTI]

    Clarke, Edmund M.

    verification, abstraction transforms the inherently infinite state system into a finite-state model [7Verification of Hybrid Systems Based on Counterexample-Guided Abstraction Refinement Edmund Clarke1 generated by the model checker. For hybrid systems, analysis of the counterexample requires the computation

  1. Verification of Hybrid Systems Based on CounterexampleGuided Abstraction Refinement ?

    E-Print Network [OSTI]

    Theobald, Michael

    verification, abstraction transforms the inherently infinite state system into a finite­state model [7, 8Verification of Hybrid Systems Based on Counterexample­Guided Abstraction Refinement ? Edmund that eliminates a counterexample generated by the model checker. For hybrid systems, analy­ sis

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

    E-Print Network [OSTI]

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

    1981-01-01

    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...

  3. Abstracting and Refining Authorization in SQL Arnon Rosenthal, Edward Sciore1

    E-Print Network [OSTI]

    Sciore, Edward

    Abstracting and Refining Authorization in SQL Arnon Rosenthal, Edward Sciore1 Abstract. The SQL and dangerous to change. To make the model easier to work with, we formalize the implicit principles behind SQL solve several administrative problems with existing SQL security. This sort of abstraction is also

  4. 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

  5. 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)

    2015-01-01

    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.

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

    E-Print Network [OSTI]

    Lawrence, Rick L.

    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

  7. 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.

  8. 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

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

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    Quantitative Methods for Strategic and Investment Planning in the Oil-Refining Brenno C(ng ­ March 2013 What, Where, When to Invest? Only op*mize streams transfers (fuel;Current Investment Planning Methodology in PETROBRAS Strategy - Increase the supply

  10. JOURNAL OF COMPUTATIONAL PHYSICS accepted Adaptive Mesh Refinement for Singular Current Sheets

    E-Print Network [OSTI]

    Grauer, Rainer

    with simple scaling assumptions. As expected, adaptive mesh refinement shows to be very efficient for studying community. Since mathemat­ ically only very little is known [1], one has to rely on numerical simulations treatment is limited very soon by the computer memory available, resulting in a resolution of less than 512

  11. 356 IEEE TRANSACTIONS ON SOFTWARE ENGINEERING, VOL. 21, NO. 4, APRIL 1995 Correct Architecture Refinement

    E-Print Network [OSTI]

    van der Hoek, André

    356 IEEE TRANSACTIONS ON SOFTWARE ENGINEERING, VOL. 21, NO. 4, APRIL 1995 Correct Architecture for the stepwise refinement of an abstract architecture into a relatively correct lower level architecture that provides a routine solution to a standard architectural design problem. A pattern contains an abstract

  12. A Refined Model of the Prototypical Salmonella SPI-1 T3SS Basal Body Reveals the Molecular Basis for Its

    E-Print Network [OSTI]

    Baker, David

    A Refined Model of the Prototypical Salmonella SPI-1 T3SS Basal Body Reveals the Molecular Basis report the crystal structures of three domains of the prototypical Salmonella SPI-1 basal body, and use) A Refined Model of the Prototypical Salmonella SPI-1 T3SS Basal Body Reveals the Molecular Basis for Its

  13. Proposal to negotiate two contracts a as part of the work to complete Building 107, an industrial building on the Swiss part of the CERN site in Meyrin

    E-Print Network [OSTI]

    2015-01-01

    Proposal to negotiate two contracts a as part of the work to complete Building 107, an industrial building on the Swiss part of the CERN site in Meyrin

  14. Specification for a real-time computer for use with the CERN 2 metre-liquid Hydrogen Bubble Chamber and associated particle beam

    E-Print Network [OSTI]

    CERN. Geneva. TC-200

    1966-01-01

    Specification for a real-time computer for use with the CERN 2 metre-liquid Hydrogen Bubble Chamber and associated particle beam

  15. Arrangements for the Building and Use of a 150 cm Cloud Chamber in Co-operation Between CERN and the Swiss Federal Institute of Technology, Zurich (ETH)

    E-Print Network [OSTI]

    1960-01-01

    Arrangements for the Building and Use of a 150 cm Cloud Chamber in Co-operation Between CERN and the Swiss Federal Institute of Technology, Zurich (ETH)

  16. Arrangements for the Building and Use of a 150 cm Cloud Chamber in Co-operation between CERN and the Swiss Federal Institute of Technology, Zurich (ETH)

    E-Print Network [OSTI]

    European Organization for Nuclear Research

    1960-01-01

    Arrangements for the Building and Use of a 150 cm Cloud Chamber in Co-operation between CERN and the Swiss Federal Institute of Technology, Zurich (ETH)

  17. 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]

    2014-01-01

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

  18. Proposal for the award of a contract for the collection, transport, removal and treatment of conventional waste produced on the CERN sites

    E-Print Network [OSTI]

    2012-01-01

    Proposal for the award of a contract for the collection, transport, removal and treatment of conventional waste produced on the CERN sites

  19. Proposal for the award of a contract for the design, supply, installation, commissioning and maintenance of a compressing and shearing machine for the CERN Radioactive Waste Treatment Centre

    E-Print Network [OSTI]

    2013-01-01

    Proposal for the award of a contract for the design, supply, installation, commissioning and maintenance of a compressing and shearing machine for the CERN Radioactive Waste Treatment Centre

  20. 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]

    2014-01-01

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

  1. Inclusive charged and neutral particle production and search for relativistic particles with fractional electric charge at the CERN p$\\overline{p}$ collider

    E-Print Network [OSTI]

    Banner, M; Bonaudi, Franco; Borer, K; Borghini, Michel; Chollet, J C; Clark, A G; Conta, C; Darriulat, Pierre; Di Lella, L; Dines-Hansen, J; Dorsaz, P A; Fayard, Louis; Fraternali, M; Froidevaux, Daniel; Gaillard, Jean-Marc; Gildemeister, O; Goggi, Giorgio V; Grote, H; Hahn, B; Hänni, H; Hansen, J R; Hansen, P; Himel, Thomas M; Hungerbühler, V; Jenni, Peter; Kofoed-Hansen, Otto Møgens; Livan, M; Loucatos, Sotirios S; Madsen, B; Mani, P; Mansoulié, B; Mantovani, G C; Mapelli, Livio P; Merkel, B; Mermikides, Michael E; Møllerud, R; Nilsson, B; Onions, Christopher J; Parrour, G; Pastore, F; Plothow-Besch, Hartmute; Prévot, N; Repellin, J P; Rothenberg, A F; Roussarie, A; Sauvage, G; Schacher, J; Siegrist, J L; Stocker, F; Teiger, J; Vercesi, V; Williams, H H; Zaccone, Henri; Zeller, W; Zylberstejn, A

    1983-01-01

    Inclusive charged and neutral particle production and search for relativistic particles with fractional electric charge at the CERN p$\\overline{p}$ collider

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

    E-Print Network [OSTI]

    2013-01-01

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

  3. DIVERSAS MANERAS DE GENERAR ENERGIA CON

    E-Print Network [OSTI]

    Gilbes, Fernando

    DE OLAS #12;PAISES CON MAYOR CAPACIDAD HIDROELECTRICA Country Annual Hydroelectric Energy Production hydroelectric generating system. Three Gorges Dam Gezhouba Dam #12;COSTO PROMEDIO DE PRODUCCION (KWH) #12;U

  4. 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

    2006-01-01

    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.

  5. 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

    2004-01-01

    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.

  6. Complementarity of the CERN Large Hadron Collider and the $e^+e^-$ International Linear Collider

    E-Print Network [OSTI]

    S. Y. Choi

    2008-09-10

    The next-generation high-energy facilities, the CERN Large Hadron Collider (LHC) and the prospective $e^+e^-$ International Linear Collider (ILC), are expected to unravel new structures of matter and forces from the electroweak scale to the TeV scale. In this report we review the complementary role of LHC and ILC in drawing a comprehensive and high-precision picture of the mechanism breaking the electroweak symmetries and generating mass, and the unification of forces in the frame of supersymmetry.

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

    SciTech Connect (OSTI)

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

    2011-02-01

    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.

  8. Changing structure of the world refining industry: implications for the United States and other major consuming regions

    SciTech Connect (OSTI)

    Not Available

    1985-02-01

    There are five chapters in this publication. Chapter I on refining industry in transition covers refining history highlights, and OPEC's downstream operations. Chapter II on demand for oil and oil products discusses supply and demand for OPEC oil, demand for oil products, historical growth trends, future growth trends and the case of East Asia - emergence of a fuel oil glut. Chapter III on the US and other traditional refining centers begins with an introduction on the structure of refining and continues on to cover the refining industry in OECD countries, USA, Western Europe, Japan, Singapore and Caribbean and closes with some conclusions. Chapter IV is on refining expansions in OPEC and the third World Nations. The following are covered: (1) nations of the Gulf (Saudi Arabia, Kuwait, Iran, Iraq, Bahrain, Qatar, Oman, United Arab Emirates); (2) OPEC members beyond the Gulf (Indonesia, Africa, Libya, Algeria, Nigeria and Gabon, South America, Venezuela); (3) other major exporters (China, Egypt, Malaysia, Mexico); (4) non-OPEC developing countries - trends in the refining sector. The chapter ends with a short summary on capacity prospects and comparative economics. The final chapter has conclusions and recommendations on: price interactions between crude and products; product exports - impact on OPEC's internal; prices and market influence; importers and exporters - decisions; and course of action of the United States. 18 figures, 40 tables.

  9. The Large Hadron Collider of CERN and the roadmap toward higher performance

    E-Print Network [OSTI]

    Rossi, L

    2012-01-01

    The Large Hadron Collider is exploring the new frontier of particle physics. It is the largest and most ambitious scientific instrument ever built and 100 years after the Rutherford experiment it continues that tradition of “smashing atoms” to unveil the secret of the infinitely small. LHC makes use of all what we learnt in 40 years of hadron colliders, in particular of ISR and Sp-pbarS at CERN and Tevatron at Fermilab, and it is based on Superconductivity, discovered also 100 years ago. Designing, developing the technology, building and finally commissioning the LHC took more than twenty years. While LHC is now successfully running, we are already preparing the future for the next step. First, by increasing of a factor five the LHC luminosity in ten years from now, and then by increasing its energy by a factor two or more, on the horizon of the next twenty years. These LHC upgrades, in luminosity and energy, will be the super-exploitation of the CERN infrastructure and is the best investment that the HEP...

  10. 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)

    2008-05-01

    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.

  11. The effects of air pollution regulations on the US refining industry. Task 3

    SciTech Connect (OSTI)

    Not Available

    1989-06-01

    Numerous air pollution regulations affecting petroleum refineries recently have been promulgated, have been proposed, or are under consideration at the federal, state, and local level. As shown in Figure ES-1, all of these environmental regulations are intended to take effect over the relatively short time period from 1989 through 1995. In the aggregate these regulatory activities have significant implications for the US refining industry and the Nation, including: Major investment requirements; changes in industry profitability; potential closure of some refineries; and potential changes in crude oil or product import dependence. At issue is whether the cumulative effect of these regulations could so adversely affect the US refining industry that US national security would be affected. In addition to the regulations outlined in Figure ES-1, President Bush recently presented a major new plan to improve the nation`s air quality. The aspects of the President`s plan that could strongly affect US refineries are summarized below.

  12. Report to the Congress on the storage of refined petroleum products and on regional supply interruptions

    SciTech Connect (OSTI)

    Not Available

    1991-06-01

    This report describes petroleum and petroleum products storage and supply disruption. Information is presented under the following topics: Historical Perspective; Current Patterns of Supply and Disposition of Petroleum Products in the Primary Distribution System; PADD I Clean Products Supply/Demand; 1990 Regional Petroleum Reserve Annual Computation; Market Infrastructure and Commercial Practices in the California Motor Gasoline Market, as Related to Potential Refined Petroleum Product Reserve Structures and Sales Procedures; Infrastructure and Commercial Practices in the Northeast Distillate Market, as Related to Potential Refined Petroleum Product Reserve Structures and Sales Procedures; Storage Stability Characteristics of Petroleum Products and Crude Oil; Effect of 1990 Clean Air Act Amendments on Demand for Petroleum Product Storage Capacity; and Environmental Regulations on Tanks.

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

    E-Print Network [OSTI]

    2006-01-01

    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.

  14. Proposal for the award of an industrial support contract for minor civil-engineering work at CERN

    E-Print Network [OSTI]

    2006-01-01

    This document concerns the award of a contract for minor civil-engineering work at CERN. The Finance Committee is invited to agree to the negotiation of a contract with the firm LOSINGER CONSTRUCTION (CH), the lowest bidder, for the provision of minor civilengineering work at CERN for three years for a total amount not exceeding 2 840 278 Swiss francs, not subject to revision for the first two years. The contract will include options for two one-year extensions beyond the initial three-year period.

  15. ,"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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Informationmonthly gasoline price to fall to $3.43U.S.longecReformulated Gasoline Refiner

  16. A refined r-factor algorithm for TVD schemes on arbitrary unstructured meshes

    E-Print Network [OSTI]

    Zhang, Di; Jiang, Chunbo; Cheng, Liang; Liang, Dongfang

    2015-07-03

    and Offshore Engineering, Dalian University of Technology, Dalian, 116024, China 4Department of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, UK SUMMARY A refined r-factor algorithm for implementing TVD schemes... ’s and Hou’s algorithms also require different formulations for boundary cells in order to be applicable in all situations. To ensure the physical boundedness of Uq , all the neighboring cells and boundary faces of the up-wind cell C are considered except...

  17. Application of a catalyst deactivation model for hydrotreating solvent refined coal feedstocks

    SciTech Connect (OSTI)

    Nalitham, R.V.

    1983-10-01

    A simple kinetic model, including a first-order catalyst deactivation rate, is applied to upgrading of coal-derived feedstocks prepared from two solvent refined coal fractions. A catalyst deactivation mechanism is proposed which involves the adsorption and surface reaction of coke precursors on catalytic active sites. The effect of feedstock composition, temperature and pressure on kinetic parameters, and in particular the catalyst deactivation rate, is determined.

  18. 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 Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergy Bills andOrder 422.1, CONDUCTCritical Materials Use |Petroleum Refining69

  19. ITP Petroleum Refining: Energy and Environmental Profile of the U.S.

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum12,ExecutiveFinancingR Walls21,Equipment:Petroleum Refining Industry (November

  20. 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)

    2012-07-01

    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.

  1. Worldwide refining

    SciTech Connect (OSTI)

    Williamson, M.

    1994-12-19

    The paper consists of several tables compiling data on refinery capacities by country, by state, and by company. The capacity data are given by process as well as by final product. Processes include vacuum distillation, thermal operations, catalytic cracking, catalytic reforming, catalytic hydrocracking, catalytic hydrorefining, and catalytic hydrotreating. Products include alkylates, polymers, and dimers; aromatics and isomers; oxygenates; hydrogen; asphalts; and coke.

  2. Petroleum refining

    SciTech Connect (OSTI)

    Gary, J.H. (Colorado School of Mines, Golden, CO (United States)); Handwerk, G.E.

    1991-01-01

    This report is on the following topics: Refinery Products; Refinery Feedstocks; Crude Distillation; Coking and Thermal Processes; Catalytic Reforming and Isomerization; Catalytic Cracking; Hydrotreating Catalytic Hydrocracking and Hydroprocessing Alkylation and Polymerization; Product Blending; Supporting Processes; Lubricating Oils; Petrochemical Feedstocks; Cost Estimation; and Economic Evaluation.

  3. Worldwide refining

    SciTech Connect (OSTI)

    Bell, L.

    1993-12-20

    The paper presents compiled data on operating refineries worldwide by country and by company within these countries. Data are presented on charge capacity for the following processes: vacuum distillation, thermal operations, catalytic cracking, catalytic reforming, cat-hydrocracking, cat hydrorefining, and cat hydrotreating. Data are also presented on the production capacity for the following products: alkylates and polymers, aromatics and isomers, lubricating oils, asphalt, hydrogen, and coke.

  4. Entrevista con el dramaturgo argentino Osvaldo Dragún

    E-Print Network [OSTI]

    Campa, Romá n V. de la

    1977-10-01

    interesaba muchísimo la experiencia; o sea, de trabajar con un tipo de autor de teatro que iba a nacer dentro de una nueva realidad completamente distinta. Entonces yo acepté y fui a Cuba. ¿Se conocían ya tus obras en Cuba? Pues ya se habían representado... apasionante para mí por el tipo de gente con la que trabajé. Fijáte que, en general, cuando se supone que se va a dar un curso de dramaturgia la idea es que la gente esté al mismo nivel universitario, al mismo nivel de conocimiento. Bueno, no, yo trabajé...

  5. Fact #676: May 23, 2011 U.S. Refiners Produce about 19 Gallons of Gasoline from a Barrel of Oil

    Broader source: Energy.gov [DOE]

    A standard U.S. barrel contains 42 gallons of crude oil which yields about 44 gallons of petroleum products. The additional 2 gallons of petroleum products come from refiner gains which result in...

  6. Steam system opportunity assessment for the pulp and paper, chemical manufacturing, and petroleum refining industries: Main report

    SciTech Connect (OSTI)

    None, None

    2002-10-01

    This report assesses steam generation and use in the pulp and paper, chemical, and petroleum refining industries, and estimates the potential for energy savings from implementation of steam system performance and efficiency improvements.

  7. CERN celebrated the first year in space for the Alpha Magnetic Spectrometer (AMS) with a visit from the crew of the shuttle mission, STS-134, who successfully delivered AMS to the International Space Station (ISS) last year.

    E-Print Network [OSTI]

    Laurent Egli

    2012-01-01

    During the celebrations at CERN, the astronauts unveiled a commemorative plaque on the lawn outside the POCC to mark the occasion and later gave a public lecture at CERN. Picture 28 : STS-134 astronauts (left to right) Andrew Feustel, Gregory Chamitoff, Gregory Johnson, Michael Fincke and Mark Kelly in the AMS Payload Operations Centre at CERN.

  8. CARE-HHH-APD Workshop on Finalizing the Roadmap for the Upgrade of the CERN and GSI Accelerator Complex

    E-Print Network [OSTI]

    Zimmermann, Frank; BEAM'07; BEAM 2007; Finalizing the Roadmap for the Upgrade of the LHC and GSI Accelerator Complex

    2008-01-01

    This report contains the Proceedings of the CARE-HHH-APD Event BEAM’07, “Finalizing the Roadmap for the Upgrade of the CERN & GSI Accelerator Complex,” which was held at CERN in Geneva, Switzerland, from 1 to 5 October 2007. BEAM’07 was primarily devoted to beam dynamics limitations for the two, or three, alternative baseline scenarios of the LHC luminosity upgrade and to critical design choices for the upgrade of the LHC injector complex at CERN and for the FAIR complex at GSI. It comprised five parts: (1) a Mini-Workshop on LHC+ Beam Performance, (2) a CERN-GSI Meeting on Collective Effects, (3) the Francesco Ruggiero Memorial Symposium, (4) a Mini-Workshop on the LHC Injectors Upgrade, and (5) the BEAM’07 Summaries. Topics addressed in the first mini-workshop of BEAM’07 ranged from the luminosity performance reach of the upgraded LHC in different scenarios, over the generation and stability of the future LHC beams, the turnaround time, beam–beam effects, luminosity levelling methods, and ...

  9. 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

    2013-01-01

    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...

  10. CERN-INTC-2014-024/INTC-P-317-ADD-1 EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH

    E-Print Network [OSTI]

    H, Darmstadt, Germany 2Max Planck Institute for Nuclear Physics, Heidelberg, Germany 3Uppsala University, Department of Physics, Istanbul, Turkey 6CERN, Geneva, Switzerland 7CSNSM-IN2P3-CNRS, Universit´e Paris-Sud, Orsay, France 8Ernst-Moritz-Arndt-University, Greifswald, Germany 9Technical University, Dresden

  11. Cmo simular flujo de gases reactivos con

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    ¿Cómo simular flujo de gases reactivos con RetrasoCodeBright? Maarten W. Saaltink #12;Procesos Difusión de especies gaseosas Flujo de gas reactivo Se forma/consume especies gaseosas por reacciones dispersión #12;Tipos de fenómenos Descomposición de materia orgánica CH2O + O2(g) CO2(g) + H2O CH2O + 0.8NO3

  12. Search for critical behavior of strongly interacting matter at the CERN Super Proton Synchrotron

    E-Print Network [OSTI]

    Gazdzicki, Marek

    2015-01-01

    History, status and plans of the search for critical behavior of strongly interacting matter created in nucleus-nucleus collisions at the CERN Super Proton Synchrotron is reviewed. In particular, it is expected that the search should answer the question whether the critical point of strongly interacting matter exists and, if it does, where it is located. First, the search strategies are presented and a short introduction is given to expected fluctuation signals and to the quantities used by experiments to detect th The most important background effects are also discussed. Second, relevant experimental results are summarized and discussed. It is intriguing that both the fluctuations of quantities integrated over the full experimental acceptance (event multiplicity and transverse momentum) as well as the bin size dependence of the second factorial moment of pion and proton multiplicities in medium-sized Si+Si collisions at 158A GeV/c suggest critical behaviour of the created matter. These results provide strong...

  13. Preliminary Risk Analysis of the LHC Cryogenic System (CERN-LHC-Project-Report-324)

    E-Print Network [OSTI]

    Chorowski, M; Riddone, G

    1999-01-01

    The Large Hadron Collider (LHC), presently under construction at CERN, will require a helium cryogenic system unprecedented in size and capacity, with more than 1600 superconducting magnets operating in superfluid helium and a total inventory of almost 100 tonnes of helium. The objective of the Preliminary Risk Analysis (PRA) is to identify all risks to personnel, equipment or environment resulting from failures that may accidentally occur within the cryogenic system of LHC in any phase of the machine operation, and that could not be eliminated by design. Assigning a gravity coefficient and one analyzing physical processes that will follow any of the recognised failure modes allows to single out worst case scenarios. Recommendations concerning lines of preventive and corrective defence, as well as for further detailed studies, are formulated.

  14. Results from the Commissioning of the n-TOF Spallation Neutron Source at CERN

    E-Print Network [OSTI]

    Borcea, C; Dahlfors, M; Ferrari, A; García-Muñoz, G; Haefner, P; Herrera-Martínez, A; Kadi, Y; Lacoste, V; Radermacher, E; Saldaña, F; Vlachoudis, V; Zanini, L; Rubbia, Carlo; Buoni, S; Dangendorf, V; Nolte, R; Weierganz, M

    2003-01-01

    The new neutron time-of-flight facility (n_TOF) has been built at CERN and is now operational. The facility is intended for the measurement of neutron induced cross sections of relevance to Accelerator Driven Systems (ADS) and to fundamental physics. Neutrons are produced by spallation of the 20 GeV/c proton beam, delivered by the Proton Synchrotron (PS), on a massive target of pure lead. A measuring station is placed at about 185 m from the neutron producing target, allowing high-resolution measurements. The facility was successfully commissioned with two campaigns of measurements, in Nov. 2000 and Apr. 2001. The main interest was concentrated in the physical parameters of the installation (neutron flux and resolution function), along with the target behavior and various safety-related aspects. These measurements confirmed the expectations from Monte Carlo simulations of the facility, thus allowing to initiate the foreseen physics program.

  15. 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)

    2008-04-01

    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.

  16. Toward the Limits of Matter: Ultra-relativistic nuclear collisions at CERN

    E-Print Network [OSTI]

    Jurgen Schukraft; Reinhard Stock

    2015-05-26

    Strongly interacting matter as described by the thermodynamics of QCD undergoes a phase transition, from a low temperature hadronic medium to a high temperature quark-gluon plasma state. In the early universe this transition occurred during the early microsecond era. It can be investigated in the laboratory, in collisions of nuclei at relativistic energy, which create "fireballs" of sufficient energy density to cross the QCD Phase boundary. We describe 3 decades of work at CERN, devoted to the study of the QCD plasma and the phase transition. From modest beginnings at the SPS, ultra-relativistic heavy ion physics has evolved today into a central pillar of contemporary nuclear physics and forms a significant part of the LHC program.

  17. Interaction region for crab waist scheme of the Future Electron-Positron Collider (CERN)

    E-Print Network [OSTI]

    Bogomyagkov, A

    2015-01-01

    Design study in CERN of the accelerator that would fit 80-100 km tunnel called Future Circular Colliders (FCC) includes high-luminosity $e^+ e^?$ collider (FCC-ee) with center-of-mass energy from 90 to 350 GeV to study Higgs boson properties and perform precise measurements at the electroweak scale [1–3]. Crab waist interaction region provides collisions with luminosity higher than 2 × 10$^{36}$ cm$^{?2}$ sec$^{?1}$ at beam energy of 45 GeV. The small values of the beta functions at the interaction point and distant final focus lenses are the reasons for high nonlinear chromaticity limiting energy acceptance of the whole ring. The paper describes interaction region for crab waist collision scheme in the FCC-ee, principles of tuning the chromaticity correction section in order to provide large energy acceptance.

  18. 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

    2014-01-01

    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, ...

  19. 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

    2012-01-01

    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.

  20. Demonstration of a laserwire emittance scanner for the CERN LINAC4 H- Beam

    E-Print Network [OSTI]

    Hofmann, T; Bosco, A; Gibson, S M; Roncarolo, F; Boorman, G; Raich, U; Bravin, E; Pozimski, J K; Letchford, A; Gabor, C

    2015-01-01

    A non-invasive, compact laserwire system has been developed to measure the transverse emittance of an H- beam and has been demonstrated at the new LINAC4 injector for the LHC at CERN. Light from a low power, pulsed laser source is conveyed via fibre to collide with the H- beam, a fraction of which is neutralized and then intercepted by a downstream diamond detector. Scanning the focused laser across the H- beam and measuring the distribution of the photo-neutralized particles enables the transverse emittance to be reconstructed. The vertical phase-space distribution of a 3 MeV beam during LINAC4 commissioning has been measured by the laserwire and verified with a conventional slit and grid method.

  1. 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)

    2014-03-01

    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.

  2. ,"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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Informationmonthly gasoline price to fall to $3.43U.S.longec 188 U.S.1Sales to End Users Refiner Sales

  3. ,"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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Informationmonthly gasoline price to fall to $3.43U.S.longec 188 U.S.1Sales to End Users Refiner

  4. ,"U.S. Reformulated 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Informationmonthly gasoline price to fall to $3.43U.S.longecReformulated Gasoline Refiner Sales

  5. ,"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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Informationmonthly gasoline price to fall to $3.43U.S.longecReformulated Gasoline RefinerResidualResale,

  6. HASSP and HEAVY: Tools for automated heavy atom searches and refinement

    SciTech Connect (OSTI)

    Terwilliger, T.T.

    1994-06-01

    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.

  7. European refiners must seek creative processes to justify heavy-ends projects

    SciTech Connect (OSTI)

    Hunt, P. [Chem Systems Ltd., London (United Kingdom)

    1996-12-09

    There are strong reasons for wanting to upgrade the bottom of the crude oil barrel. But European refiners will not find it easy to get approval and funding for major capital investment projects. In most cases, investment justification will have to be creative and may need to rely on factors traditionally considered to be outside the conventional refinery fence. Examples of such creative upgrading schemes are those employed in four gasification projects planned for refineries in Italy. It is clear that the major obstacles to heavy residue processing are not technical, but economic. A review of these obstacles will set the stage for European investment in bottom-of-the-barrel processing.

  8. Methods of refining and producing dibasic esters and acids from natural oil feedstocks

    SciTech Connect (OSTI)

    Snead, Thomas E; Cohen, Steven A; Gildon, Demond L

    2015-04-07

    Methods are provided for refining natural oil feedstocks and producing dibasic esters and/or dibasic acids. The methods comprise reacting a terminal olefin with an internal olefin in the presence of a metathesis catalyst to form a dibasic ester and/or dibasic acid. In certain embodiments, the olefin esters are formed by reacting the feedstock in the presence of a metathesis catalyst under conditions sufficient to form a metathesized product comprising olefins and esters, separating the olefins from the esters in the metathesized product, and transesterifying the esters in the presence of an alcohol to form a transesterified product having olefin esters.

  9. Quantitative phase analysis of Mg:ZrO{sub 2} nanoparticles by Rietveld refinement method

    SciTech Connect (OSTI)

    Balaji, V. Senthilkumaran, S. Thangadurai, P.

    2014-04-24

    To quantify the structural phases of nanocrystalline ZrO{sub 2} doped with Mg ions of varying concentrations (3, 5, 10, 15 and 20%) and annealed at different temperatures. Magnesia doped zirconia was prepared by chemical co-precipitation method and annealed up to 1000°C. The monoclinic and tetragonal phases present in Mg:ZrO{sub 2} were quantified using Rietveld refinement analysis of the X-ray diffraction data and compared with the Direct method based on peak intensity calculations. Tetragonal phase was dominant in the 600°C annealed Mg:ZrO{sub 2} for all Mg concentrations.

  10. Table 3a. 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Informationmonthly gasoline price toStocks 2009CubicAnalysisYearArkansas"a. Imported Refiner

  11. Facundina: Teatro con todas las letras

    E-Print Network [OSTI]

    Espinosa Domí nguez, Carlos

    1987-10-01

    exótica," sino que va a cues tiones tan esenciales como la marginación social de estas etnias. UNA LECCIÓN MODÉLICA Para la escena argentina, Facundina representa un valioso aporte, un camino nuevo y fértil. Es un trabajo que rompe nuchos de los... reclaman otra actitud del auditorio al situarse frente a la obra. En el contexto de ese país es además una lección modélica de cómo puede crearse un espectáculo renovador con el máximo rigor y mínimos recursos materiales, en condiciones tan hostiles y...

  12. Conformation-dependent backbone geometry restraints set a new standard for protein crystallographic refinement

    SciTech Connect (OSTI)

    Moriarty, Nigel W. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Tronrud, Dale E. [Oregon State Univ., Corvallis, OR (United States). Dept. of Biochemistry and Biophysics; Adams, Paul D. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States). Dept. of Bioengineering; Karplus, P. Andrew [Oregon State Univ., Corvallis, OR (United States). Dept. of Biochemistry and Biophysics

    2014-09-01

    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.

  13. US imports. Part II. Refined product market shares, then and now

    SciTech Connect (OSTI)

    Not Available

    1987-07-08

    Unlike imports of crude oil to the US, which were up 45.7% between 1977 and 1986, imports of petroleum products have fallen by about 8.6% during the same period. The crude oil price crash of 1986 deepened US dependency on imports of crude, from 21.4% in 1977 to 25.4% in 1986, but reduced the dependency in the case of total refined products from 11.32% in 1977 to 11.13% in 1986. Comparing the first four months of 1987 with 1986, US dependency on imported petroleum products is down 2.73 percentage points; import dependency on OPEC petroleum products is down 4.60 percentage points; dependency on Arab OPEC countries product imports is down 1.88 percentage points; and for Eastern Hemisphere exporters, that dependency has fallen 2.17 percentage points. This issue also contains: (1) ED refining netback data from the US Gulf and West coasts, Rotterdam, and Singapore for early July 1987; and (2) ED fuel price/tax series for countries of the Western Hemisphere, July 1987 edition. 4 figures, 5 tables.

  14. A new approach to oil refining with allowance for ecological requirements

    SciTech Connect (OSTI)

    Nasirov, R.K.; Serikov, P.Yu.; Barsukov, O.V. [and others

    1994-12-01

    More stringent quality requirements are being imposed on oil fuels because of the deteriorating ecological situation. At the same time the new ecological constraints have slightly reduced the supplies of light crudes on the world market because the oil-producing countries have been forced to consume more of their best crudes and only heavier and sour crudes are sent to other countries for refining. In view of this, in recent years work has been focused on thorough refining of oil distillates and residues in a medium of hydrogen-containing gas in the presence of catalysts for hydrorefining and hydrocracking. Hydrorefining destroys sulfur-, nitrogen-, and oxygen-containing compounds of the stock, removes organometallic components, improves the ecological characteristics of the products, reduces the corrosion of the refinery equipment, and reduces atmospheric pollution. Hydrorefining units have been built at almost all refineries, with allowance for the above and the fact that the hydroprocesses are highly technologically suitable and controllable and produce almost no waste. A number of problems pertaining to hydroprocesses, interesting scientific results, and developed theoretical approaches to intensify hydrorefining processes are described.

  15. Projected refined product balances in key Latin American countries: A preliminary examination

    SciTech Connect (OSTI)

    NONE

    1996-06-01

    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.

  16. Conformation-dependent backbone geometry restraints set a new standard for protein crystallographic refinement

    SciTech Connect (OSTI)

    Moriarty, Nigel W.; Tronrud, Dale E.; Adams, Paul D.; Karplus, P. Andrew

    2014-06-17

    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.

  17. Refined Holographic Entanglement Entropy for the AdS Solitons and AdS black Holes

    E-Print Network [OSTI]

    Masafumi Ishihara; Feng-Li Lin; Bo Ning

    2013-04-04

    We consider the refinement of the holographic entanglement entropy for the holographic dual theories to the AdS solitons and AdS black holes, including the corrected ones by the Gauss-Bonnet term. The refinement is obtained by extracting the UV-independent piece of the holographic entanglement entropy, the so-called renormalized entanglement entropy which is independent of the choices of UV cutoff. Our main results are (i) the renormalized entanglement entropies of the AdS$_{d+1}$ soliton for $d=4,5$ are neither monotonically decreasing along the RG flow nor positive definite, especially around the deconfinement/confinement phase transition; (ii) there is no topological entanglement entropy for AdS$_5$ soliton even with Gauss-Bonnet correction; (iii) for the AdS black holes, the renormalized entanglement entropy obeys an expected volume law at IR regime, and the transition between UV and IR regimes is a smooth crossover even with Gauss-Bonnet correction; (iv) based on AdS/MERA conjecture, we postulate that the IR fixed-point state for the non-extremal AdS soliton is a trivial product state.

  18. 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

    2014-06-17

    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

  19. Self-consistent QM/MM methodologies for structural refinement of photosystem II and other macromolecules of biological interest

    SciTech Connect (OSTI)

    Batista, Enrique R [Los Alamos National Laboratory; Sproviero, Eduardo M [YALE UNIV; Newcomer, Michael [YALE UNIV; Gascon, Jose A [YALE UNIV; Batista, Victor S [YALE UNIV

    2008-01-01

    The combination of quantum mechanics and molecular mechanics (QM/MM) is one of the most promising approaches to study the structure, function, and properties of proteins and nucleic acids. However, there some instances in which the limitations of either the MM (lack of a proper electronic description) or QM (limited to a few number of atoms) methods prevent a proper description of the system. To address this issue, we review here our approach to fine-tune the structure of biological systems using post-QM/MM refinements. These protocols are based on spectroscopy data, and/or partitioning of the system to extend the QM description to a larger region of a protein. We illustrate these methodologies through applications to several biomolecules, which were pre-optimized at the QM/MM level and then further refined using postQM/MM refinement methodologies: mod(QM/MM), which refines the atomic charges of the residues included in the MM region accounting for polarization effects; mod(QM/MM)-opt that partition the MM region in smaller parts and optimizes each part in an iterative. self-consistent way, and the Polarized-Extended X-Ray Absorption Fine Structure (P-EXAFS) fitting procedure, which fine-tune the atomic coordinates to reproduce experimental polarized EXAFS spectra. The first two techniques were applied to the guanine quadruplex. while the P-EXAFS refinement was applied to the oxygen evolving complex of photosystem II.

  20. NFMCC Meeting -13 March 2006 I.Efthymiopoulos, A.Fabich, CERN AB-ATB-EA 1 MERcury Intense Target (MERIT)

    E-Print Network [OSTI]

    McDonald, Kirk

    done by CERN/AB-PO group Status: Power supply installed in bat.193 Refurbishment started ­ will be completed by October 2006 AC transformer installed Associated AC circuitry refurbishment to be done

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

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

    to Air-Con International finding that a variety of central air conditioners and air conditioning heat pumps distributed under the Air-Con private label do not comport with the...

  2. ORNL/CON-460 The Evaluation of a 4000-Home

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    ORNL/CON-460 The Evaluation of a 4000-Home Geothermal Heat Pump Retrofit at Fort Polk, Louisiana. #12;ORNL/CON-640 The Evaluation of a 4000-Home Geothermal Heat Pump Retrofit at Fort Polk, Louisiana

  3. The Histoty of Ventilation and Air Conditioning is CERN Up to Date with the latest Technological Developments?

    E-Print Network [OSTI]

    Kühnl-Kinel, J

    2000-01-01

    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.

  4. Proposal to Negotiate, without Competitive Tendering, a Blanket Order for High-Voltage Thyratrons for the CERN Accelerators

    E-Print Network [OSTI]

    2002-01-01

    This document concerns the supply of thyratrons to be used as high-voltage and high-current switches for the fast-pulsed magnet systems of the CERN accelerators and for the protection of the klystrons of RF systems. Following a market survey (MS-3136/SL/LHC) carried out among 18 firms in ten Member States, CERN entered into negotiations with one firm in one Member State. The Finance Committee is invited to agree to the negotiation, without competitive tendering, of a new blanket order with E2V TECHNOLOGIES (GB) for up to 800 000 pounds sterling to cover the supply of thyratrons for the years 2003, 2004 and 2005, subject to price revision for inflation for deliveries after 31 December 2003. At the present rate of exchange, this amount is equivalent to 1 855 000 Swiss francs. The firm has indicated the following distribution by country of the order value covered by this adjudication proposal: GB - 100%.

  5. Experiments on LHC long-range beam-beam compensation and crossing schemes at the CERN SPS in 2004

    SciTech Connect (OSTI)

    Zimmermann, F.; Koutchouk, J.-P.; Roncarolo, F.; Wenninger, J.; Sen, T.; Shiltsev, V.; Papaphilippou, Y.; /ESRF, Grenoble

    2005-05-01

    Experiments with two prototype long-range beam-beam compensators (current-carrying wires) during the 2004 CERN SPS run explored the efficiency of a proposed long-range beam-beam compensation for the LHC. In addition, the SPS compensators were also used to ''simulate'' the effect of different planes of crossing at two LHC interaction points. We present the experimental results and compare them with computer simulations.

  6. 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)

    2003-07-01

    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.

  7. 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

    2008-01-01

    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...

  8. Stabilizing effect of a double-harmonic RF system in the CERN PS

    SciTech Connect (OSTI)

    Bhat, C.; Caspers, F.; Damerau, H.; Hancock, S.; Mahner, E.; Zimmermann, F.; /CERN

    2009-04-01

    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.

  9. The Evolution of the Region of Interest Builder in the ATLAS Experiment at CERN

    E-Print Network [OSTI]

    Rifki, Othmane; The ATLAS collaboration; Crone, Gordon Jeremy; Green, Barry; Love, Jeremy; Proudfoot, James; Panduro Vazquez, William; Vandelli, Wainer; Zhang, Jinlong

    2015-01-01

    ATLAS is a general purpose particle detector at the Large Hadron Collider (LHC) at CERN designed to measure the products of proton collisions. Given their high interaction rate (1GHz), selective triggering in real time is required to reduce the rate to the experiment’s data storage capacity (1KHz). To meet this requirement, ATLAS employs a combination of hardware and software triggers to select interesting collisions for physics analysis. The Region of Interest Builder (RoIB) is an integral part of the ATLAS detector Trigger and Data Acquisition (TDAQ) chain where the coordinates of the regions of interest (RoIs) identified by the first level trigger (L1) are collected and passed to the High Level Trigger (HLT) to make a decision. While the current custom RoIB operated reliably during the first run of the LHC, it is desirable to have the RoIB more operationally maintainable in the new run, which will reach higher luminosities with an increased complexity of L1 triggers. We are responsible for migrating the ...

  10. Light ion production for a future radiobiological facility at CERN: Preliminary studies

    SciTech Connect (OSTI)

    Stafford-Haworth, Joshua, E-mail: Joshua.Stafford-Haworth@cern.ch [CERN, 1211 Geneva 23 (Switzerland) [CERN, 1211 Geneva 23 (Switzerland); John Adams Institute at Royal Holloway, University of London, Egham, Surrey TW20 0EX (United Kingdom); Bellodi, Giulia; Küchler, Detlef; Lombardi, Alessandra; Scrivens, Richard [CERN, 1211 Geneva 23 (Switzerland)] [CERN, 1211 Geneva 23 (Switzerland); Röhrich, Jörg [CERN, 1211 Geneva 23 (Switzerland) [CERN, 1211 Geneva 23 (Switzerland); Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Berlin (Germany)

    2014-02-15

    Recent medical applications of ions such as carbon and helium have proved extremely effective for the treatment of human patients. However, before now a comprehensive study of the effects of different light ions on organic targets has not been completed. There is a strong desire for a dedicated facility which can produce ions in the range of protons to neon in order to perform this study. This paper will present the proposal and preliminary investigations into the production of light ions, and the development of a radiobiological research facility at CERN. The aims of this project will be presented along with the modifications required to the existing linear accelerator (Linac3), and the foreseen facility, including the requirements for an ion source in terms of some of the specification parameters and the flexibility of operation for different ion types. Preliminary results from beam transport simulations will be presented, in addition to some planned tests required to produce some of the required light ions (lithium, boron) to be conducted in collaboration with the Helmholtz-Zentrum für Materialien und Energie, Berlin.

  11. Search for critical behavior of strongly interacting matter at the CERN Super Proton Synchrotron

    E-Print Network [OSTI]

    Marek Gazdzicki; Peter Seyboth

    2015-06-26

    History, status and plans of the search for critical behavior of strongly interacting matter created in nucleus-nucleus collisions at the CERN Super Proton Synchrotron is reviewed. In particular, it is expected that the search should answer the question whether the critical point of strongly interacting matter exists and, if it does, where it is located. First, the search strategies are presented and a short introduction is given to expected fluctuation signals and to the quantities used by experiments to detect th The most important background effects are also discussed. Second, relevant experimental results are summarized and discussed. It is intriguing that both the fluctuations of quantities integrated over the full experimental acceptance (event multiplicity and transverse momentum) as well as the bin size dependence of the second factorial moment of pion and proton multiplicities in medium-sized Si+Si collisions at 158A GeV/c suggest critical behaviour of the created matter. These results provide strong motivation for the ongoing systematic scan of the phase diagram by the NA61/SHINE experiment at the SPS and the continuing search at the Brookhaven Relativistic Hadron Collider.

  12. Design and Performance Optimization of the LHC Collimation System (CERN-THESIS-2006-069)

    E-Print Network [OSTI]

    Robert-Démolaize, G

    2006-01-01

    The Large Hadron Collider (LHC) is presently under construction at CERN. The LHC is a circular accelerator that stores proton beams and accelerates them to a 7 TeV beam energy. The required bending fields are achieved with super-conducting magnets. The stored proton beams are collided in experimental detectors and produce a design luminosity of 1034 cmâ??2sâ??1. Every storage ring encounters unavoidable proton losses. The protons that diffuse into the so-called beam halo can touch accelerator components. In order to avoid quenches of the superconducting magnets, the halo protons must be removed before reaching the magnets. This is achieved with a multi-stage cleaning system, built out of two-sided collimators that are located at adequate positions in the machine. Due to the high stored beam intensity (required for high luminosity), the efficiency of the LHC beam cleaning must be much better than in any other exisiting machine: not more than 0.00002 % of protons hitting the collimators may escape and imp...

  13. Con Eduardo Pavlovsky, cinco años después

    E-Print Network [OSTI]

    Giella, Miguel Á ngel

    1988-10-01

    que quiero hacer yo con lo estético y artístico en mi vida. Más precisamente, a partir del estreno de Potestad, la obra que estoy haciendo ahora en Madrid, es cuando me doy cuenta que no puedo dispersar mis energías hacia distintos niveles de... estético y artístico en mi vida. Más precisamente, a partir del estreno de Potestad, la obra que estoy haciendo ahora en Madrid, es cuando me doy cuenta que no puedo dispersar mis energías hacia distintos niveles de orientación estética. Me defino por...

  14. 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo,AltFuelVehicle2 Jump to: navigation, searchContDiv JumpTechDsc Jump to:cons Jump to:

  15. Cons rcio Novo Gramacho | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar EnergyLawler,CoalConcordia Electric Coop, IncIllinois) Jump to:Cons rcio Novo

  16. 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar2-0057-EA Jump to:ofEnia SpAFlexStock| Open EnergyGapminderTexas:GasCon Jump

  17. 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.

    2008-02-12

    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.

  18. Refining the classification of the irreps of the 1D N-Extended Supersymmetry

    E-Print Network [OSTI]

    Kuznetsova, Z; Kuznetsova, Zhanna; Toppan, Francesco

    2007-01-01

    In hep-th/0511274 the classification of the fields content of the linear finite irreducible representations of the algebra of the 1D N-Extended Supersymmetric Quantum Mechanics was given. In hep-th/0611060 it was pointed out that certain irreps with the same fields content can be regarded as inequivalent. This result can be understood in terms of the "connectivity" properties of the graphs associated to the irreps. We present here a classification of the connectivity of the irreps, refining the hep-th/0511274 classification based on fields content. As a byproduct, we find a counterexample to the hep-th/0611060 claim that the connectivity is uniquely specified by the "sources" and "targets" of an irrep graph. We produce one pair of N=5 irreps and three pairs of N=6 irreps with the same number of sources and targets which, nevertheless, differ in connectivity.

  19. Lance for fuel and oxygen injection into smelting or refining furnace

    DOE Patents [OSTI]

    Schlichting, Mark R. (Chesterton, IN)

    1994-01-01

    A furnace 10 for smelting iron ore and/or refining molten iron 20 is equipped with an overhead pneumatic lance 40, through which a center stream of particulate coal 53 is ejected at high velocity into a slag layer 30. An annular stream of nitrogen or argon 51 enshrouds the coal stream. Oxygen 52 is simultaneously ejected in an annular stream encircling the inert gas stream 51. 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 84 to react with carbon monoxide gas rising from slag layer 30, thereby adding still more heat to the furnace.

  20. Methods of refining natural oils and methods of producing fuel compositions

    SciTech Connect (OSTI)

    Firth, Bruce E; Kirk, Sharon E; Gavaskar, Vasudeo S

    2015-11-04

    A method of refining a natural oil includes: (a) providing a feedstock that includes a natural oil; (b) reacting the feedstock in the presence of a metathesis catalyst to form a metathesized product that includes olefins and esters; (c) passivating residual metathesis catalyst with an agent selected from the group consisting of phosphorous acid, phosphinic acid, and a combination thereof; (d) separating the olefins in the metathesized product from the esters in the metathesized product; and (e) transesterifying the esters in the presence of an alcohol to form a transesterified product and/or hydrogenating the olefins to form a fully or partially saturated hydrogenated product. Methods for suppressing isomerization of olefin metathesis products produced in a metathesis reaction, and methods of producing fuel compositions are described.

  1. Methods of refining natural oils, and methods of producing fuel compositions

    SciTech Connect (OSTI)

    Firth, Bruce E.; Kirk, Sharon E.

    2015-10-27

    A method of refining a natural oil includes: (a) providing a feedstock that includes a natural oil; (b) reacting the feedstock in the presence of a metathesis catalyst to form a metathesized product that includes olefins and esters; (c) passivating residual metathesis catalyst with an agent that comprises nitric acid; (d) separating the olefins in the metathesized product from the esters in the metathesized product; and (e) transesterifying the esters in the presence of an alcohol to form a transesterified product and/or hydrogenating the olefins to form a fully or partially saturated hydrogenated product. Methods for suppressing isomerization of olefin metathesis products produced in a metathesis reaction, and methods of producing fuel compositions are described.

  2. Lance for fuel and oxygen injection into smelting or refining furnace

    DOE Patents [OSTI]

    Schlichting, M.R.

    1994-12-20

    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.

  3. Early F-type stars - refined classification, confrontation with Stromgren photometry, and the effects of rotation

    SciTech Connect (OSTI)

    Gray, R.O.; Garrison, R.F.

    1989-02-01

    The classification for early F-type stars in the MK spectral classification system presented by Gray and Garrison (1987) is refined. The effect of rotation on spectral classification and ubvy-beta photometry of early F-type stars is examined. It is found that the classical luminosity criterion, the 4417 A/4481 A ratio gives inconsistent results. It is shown that most of the stars in the Delta Delphini class of metallic-line stars are either normal or are indistinguishable from proto-Am stars. It is suggested that the designation Delta Delphini should be dropped. The classifications are compared with Stromgren photometry. The effects of rotation on the delta-c sub 1 index in the early-F field dwarfs is demonstrated. 55 references.

  4. A node-centered local refinement algorithm for poisson's equation in complex geometries

    SciTech Connect (OSTI)

    McCorquodale, Peter; Colella, Phillip; Grote, David P.; Vay, Jean-Luc

    2004-05-04

    This paper presents a method for solving Poisson's equation with Dirichlet boundary conditions on an irregular bounded three-dimensional region. The method uses a nodal-point discretization and adaptive mesh refinement (AMR) on Cartesian grids, and the AMR multigrid solver of Almgren. The discrete Laplacian operator at internal boundaries comes from either linear or quadratic (Shortley-Weller) extrapolation, and the two methods are compared. It is shown that either way, solution error is second order in the mesh spacing. Error in the gradient of the solution is first order with linear extrapolation, but second order with Shortley-Weller. Examples are given with comparison with the exact solution. The method is also applied to a heavy-ion fusion accelerator problem, showing the advantage of adaptivity.

  5. 3D Adaptive Mesh Refinement Simulations of Pellet Injection in Tokamaks

    SciTech Connect (OSTI)

    R. Samtaney; S.C. Jardin; P. Colella; D.F. Martin

    2003-10-20

    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.

  6. 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

    2015-01-01

    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...

  7. Petroleum refining industry of developed capitalist countries in the 1990s

    SciTech Connect (OSTI)

    Prokhorova, A.A.

    1994-07-01

    Crude oil is the principal source of energy today and in the immediate future. The increases in the consumption of crude oil (1.7% per year up to 2005) will be offset mainly by additional supplies from the countries of the Near East. Data on the imports of oil by the developed capitalists countries are presented in Table 2. In the United States, according to a projection made by Conoco, by the year 2000 the volume of imports will be twice the volume of domestic production; according to another prediction, the amount of Near East crude will increase from 34% in 1990 to 42% in 2000. Since the mid-1980s, the energy policy of the USA has been based on importing so-called cheap crude. Laws have been passed to mandate not only energy saving, but also cuts in the oil and gas production on U.S. territory. The volume of U.S. oil production will be 20% lower in 2000 than in 1990. Some 90% of the worldwide demand for oil is met by light and medium-density crudes, but such crudes account for only 25% of the oil resources. Projections indicate that the oil supplied to refiners in the future will be heavier and will have higher sulfur contents. The U.S. production of low-sulfur crude will drop off sharply in the next 10-15 years. The drop in oil production of the CIS [former USSR] and the consequent drop in exports from these countries will have a destabilizing effect on the world market. The average price of the {open_quotes}market basket{close_quotes} of OPEC crudes in 1991 was $149/ton (in 1990 $178/ton), in comparison with a 1992 price of $148/ton. This report presents data on refining process capacities and the ratio of secondary capacity to primary distillation capacity.

  8. Errors Characteristics of Two Grid Refinement Approaches in Aquaplanet Simulations: MPAS-A and WRF

    SciTech Connect (OSTI)

    Hagos, Samson M.; Leung, Lai-Yung R.; Rauscher, Sara; Ringler, Todd

    2013-09-01

    This study compares the error characteristics associated with two grid refinement approaches including global variable resolution and nesting for high resolution regional climate modeling. The global variable resolution model, Model for Prediction Across Scales-Atmosphere (MPAS-A), and the limited area model, Weather Research and Forecasting (WRF) model, are compared in an idealized aqua-planet context. For MPAS-A, simulations have been performed with a quasi-uniform resolution global domain at coarse (1°) and high (0.25°) resolution, and a variable resolution domain with a high resolution region at 0.25° configured inside a coarse resolution global domain at 1° resolution. Similarly, WRF has been configured to run on a coarse (1°) and high (0.25°) tropical channel domain as well as a nested domain with a high resolution region at 0.25° nested two-way inside the coarse resolution (1°) tropical channel. The variable resolution or nested simulations are compared against the high resolution simulations. Both models respond to increased resolution with enhanced precipitation. Limited and significant reduction in the ratio of convective to non-convective precipitation. The limited area grid refinement induces zonal asymmetry in precipitation (heating), accompanied by zonal anomalous Walker like circulations and standing Rossby wave signals. Within the high resolution limited area, the zonal distribution of precipitation is affected by advection in MPAS-A and by the nesting strategy in WRF. In both models, 20 day Kelvin waves propagate through the high-resolution domains fairly unaffected by the change in resolution (and the presence of a boundary in WRF) but increased resolution strengthens eastward propagating inertio-gravity waves.

  9. 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

  10. Neutron and X-ray diffraction and empirical potential structure refinement modelling of magnesium stabilised amorphous calcium

    E-Print Network [OSTI]

    Benning, Liane G.

    Neutron and X-ray diffraction and empirical potential structure refinement modelling of magnesium online xxxx Keywords: Amorphous calcium carbonate; EPSR modelling; Neutron diffraction; X-ray diffraction Amorphous calcium carbonate (ACC) plays a key role in biomineralisation processes in sea organisms. Neutron

  11. Control of radio-activity found in normal waste during 1963 and disposal of radio-activity waste from the CERN site an approach to"sky-shine" measurement

    E-Print Network [OSTI]

    Baarli, J

    1964-01-01

    Control of radio-activity found in normal waste during 1963 and disposal of radio-activity waste from the CERN site

  12. Automatisation du processus d'import des métadonnées INIS dans les bases de données bibliographiques du CERN

    E-Print Network [OSTI]

    Baudic, Romain

    2004-01-01

    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.

  13. Fusiones y Adquisiciones en Mercados con Empresas Publicas y Privadas

    E-Print Network [OSTI]

    Coloma, Germán

    2006-01-01

    FUSIONES Y ADQUISICIONES EN MERCADOS CON EMPRESAS PÚBLICAS Yapreciación de posibles fusiones y adquisiciones entre laspública). Descriptores: Fusiones y adquisiciones, empresa

  14. Il pensiero meridiano oggi: Intervista e dialoghi con Franco Cassano

    E-Print Network [OSTI]

    Cassano, Francesco; Fogu, Claudio

    2010-01-01

    e Brindisi) con Albania, Macedonia, Bulgaria. 7 Negli annirecentemente a Skopje, in Macedonia. Sono partito la mattinagiornata per arrivare in Macedonia. Se ci fosse un volo

  15. Cuarenta años de crítica: una entrevista con Seymour Mentón

    E-Print Network [OSTI]

    Ramírez-Pimienta, Juan Carlos; Villalobos, José Pablo

    1994-01-01

    crítica: una entrevista con Seymour Mentón Importante figurapor más de cuarenta años, Seymour Mentón es una de lasy profesor principiante? SEYMOUR MENTÓN. La crítica ha

  16. Case Study - Con Edison Smart Grid Investment Grant

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

    underground system. Case Study - Con Edison Smart Grid Investment Grant 2 Distribution Automation for the Long Haul Getting the entire system in place is a "heavy lift," says...

  17. Chemical coal cleaning process and costs refinement for coal-water slurry manufacture

    SciTech Connect (OSTI)

    Bhasin, A.K.; Berggren, M.H.; Ronzio, N.J.; Smit, F.J.

    1985-12-31

    This report describes the results of process and cost refinement studies for the manufacture of ultra-clean coal-slurry fuel for direct-fired gas turbines. The work was performed as an extension to an earlier contract in which AMAX R and D supplied METC with two lots of highly beneficiated coal slurry fuel for use in the Heat Engines program. A conceptual design study and cost estimate supplied to METC at that time indicated that a combined physical and chemical cleaning process could produce ultra-clean fuel at a competitive price. Laboratory and pilot plant studies performed for the contract extension further defined the process conditions and operating and capital costs to prepare coals containing from 0.2 to 1.0% ash as slurry fuels. A base-case fuel containing coal cleaned to 0.5% ash in a 1000 cp slurry containing 55% coal was $4.16 per million Btu when produced in quantities required to fuel a 500 MW gas-turbine generating station. Coal slurry fuel production costs as low as $3.66 per million Btu were projected for coals cleaned to 1.0% ash. 12 refs., 23 figs., 63 tabs.

  18. Staggered grid lagrangian method with local structured adaptive mesh refinement for modeling shock hydrodynamics

    SciTech Connect (OSTI)

    Anderson, R W; Pember, R B; Elliot, N S

    2000-09-26

    A new method for the solution of the unsteady Euler equations has been developed. The method combines staggered grid Lagrangian techniques with structured local adaptive mesh refinement (AMR). This method is a precursor to a more general adaptive arbitrary Lagrangian Eulerian (ALE-AMR) algorithm under development, which will facilitate the solution of problems currently at and beyond the boundary of soluble problems by traditional ALE methods by focusing computational resources where they are required. Many of the core issues involved in the development of the ALE-AMR method hinge upon the integration of AMR with a Lagrange step, which is the focus of the work described here. The novel components of the method are mainly driven by the need to reconcile traditional AMR techniques, which are typically employed on stationary meshes with cell-centered quantities, with the staggered grids and grid motion employed by Lagrangian methods. These new algorithmic components are first developed in one dimension and are then generalized to two dimensions. Solutions of several model problems involving shock hydrodynamics are presented and discussed.

  19. Refinement, Validation and Application of Cloud-Radiation Parameterization in a GCM

    SciTech Connect (OSTI)

    Dr. Graeme L. Stephens

    2009-04-30

    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.

  20. Dimensional reduction as a tool for mesh refinement and trackingsingularities of PDEs

    SciTech Connect (OSTI)

    Stinis, Panagiotis

    2007-06-10

    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.

  1. Refined rotational period, pole solution, and shape model for (3200) Phaethon

    SciTech Connect (OSTI)

    Ansdell, Megan; Meech, Karen J.; Kaluna, Heather; Hainaut, Olivier; Buie, Marc W.; Bauer, James; Dundon, Luke

    2014-09-20

    (3200) Phaethon exhibits both comet- and asteroid-like properties, suggesting it could be a rare transitional object such as a dormant comet or previously volatile-rich asteroid. This justifies detailed study of (3200) Phaethon's physical properties as a better understanding of asteroid-comet transition objects can provide insight into minor body evolution. We therefore acquired time series photometry of (3200) Phaethon over 15 nights from 1994 to 2013, primarily using the Tektronix 2048 × 2048 pixel CCD on the University of Hawaii 2.2 m telescope. We utilized light curve inversion to (1) refine (3200) Phaethon's rotational period to P = 3.6032 ± 0.0008 hr; (2) estimate a rotational pole orientation of ? = +85° ± 13° and ? = –20° ± 10°; and (3) derive a shape model. We also used our extensive light curve data set to estimate the slope parameter of (3200) Phaethon's phase curve as G ? 0.06, consistent with C-type asteroids. We discuss how this highly oblique pole orientation with a negative ecliptic latitude supports previous evidence for (3200) Phaethon's origin in the inner main asteroid belt as well as the potential for deeply buried volatiles fueling impulsive yet rare cometary outbursts.

  2. 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)

    2010-02-15

    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.

  3. 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

    2014-04-01

    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.

  4. 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

    2009-03-03

    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.

  5. 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

    2009-05-01

    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.

  6. Relativistic Hydrodynamic Flows Using Spatial and Temporal Adaptive Structured Mesh Refinement

    E-Print Network [OSTI]

    Peng Wang; Tom Abel; Weiqun Zhang

    2007-12-31

    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.

  7. Aluminum doped zirconia nanopowders: Wet-chemical synthesis and structural analysis by Rietveld refinement

    SciTech Connect (OSTI)

    Srdic, Vladimir V. Rakic, Srdan; Cvejic, Zeljka

    2008-10-02

    Alumina/zirconia nanopowders, with up to 20 mol% Al{sub 2}O{sub 3}, were prepared by wet-chemical synthesis technique, using controlled hydrolysis of alkoxides. The as-synthesized powders are amorphous, have very high specific surface area and the corresponding particle size smaller than 4 nm. Amorphous powders with 0, 10 and 20 mol% Al{sub 2}O{sub 3} crystallize at 460, 692 and 749 deg. C, respectively, as a single-phase tetragonal zirconia, without any traces of alumina phases. Rietvled refinement of X-ray diffraction data, used for the detailed structural analysis of annealed nanopowders, showed that the high-temperature zirconia phase is stabilized due to the formation of ZrO{sub 2}/Al{sub 2}O{sub 3} solid solutions. High solubility of alumina in the tetragonal zirconia (up to 28.6 at% Al{sup 3+}) and stabilization of tetragonal zirconia solid solution up to high temperature (as high as 1150 deg. C) were also confirmed.

  8. 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.; Guariguata, G.; Salmen, F.G.

    1994-12-01

    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.

  9. C2GT intercepting CERN neutrinos to Gran Sasso in the Gulf of Taranto to measure $\\theta_13$

    E-Print Network [OSTI]

    Ball, A E; Camilleri, L L; Catinaccio, A; Chelkov, G A; Dydak, F; Elagin, A; Frandsen, Poul Kjaer; Gostkin, M I; Grant, A; Guskov, A; Joram, C; Krumshtein, Z; Müller, H; Postema, H; Price, M; Rovelli, T; Schinzel, D; Séguinot, Jacques; Valenti, G; Voss, R; Wotschack, J; Zhemchugov, A S

    2007-01-01

    Today's greatest challenge in accelerator-based neutrino physics is to measure the mixing angle \\thonethree\\ which is known to be much smaller than the solar mixing angle \\thonetwo\\ and the atmospheric mixing angle \\thtwothree . A non-zero value of the angle \\thonethree\\ is a prerequisite for observing CP violation in neutrino mixing. In this paper, we discuss a deep-sea neutrino experiment with 1.5~Mt fiducial target mass in the Gulf of Taranto with the prime objective of measuring \\thonethree. The detector is exposed to the CERN neutrino beam to Gran Sasso in off-axis geometry. Monochromatic muon-neutrinos of $\\approx 800$~MeV energy are the dominant beam component. Neutrinos are detected through quasi-elastic, charged-current reactions in sea water; electrons and muons are detected in a large-surface, ring-imaging Cherenkov detector. The profile of the seabed in the Gulf of Taranto allows for a moveable experiment at variable distances from CERN, starting at 1100 km. From the oscillatory pattern of the dis...

  10. The Proton Beams for the New Time-of-Flight Neutron Facility at the CERN-PS

    E-Print Network [OSTI]

    Cappi, R; Métral, G

    2000-01-01

    The experimental determination of neutron cross sections in fission and capture reactions as a function of the neutron energy is of primary importance in nuclear physics. Recent developments at CERN and elsewhere have shown that many fields of research and development, such as the design of Accelerator-Driven Systems (ADS) for nuclear waste incineration, nuclear astrophysics, fundamental nuclear physics, dosimetry for radiological protection and therapy, would benefit from a better knowledge of neutron cross sections. A neutron facility at the CERN-PS has been proposed with the aim of carrying out a systematic and high resolution study of neutron cross sections through Time-Of-Flight (n-TOF) measurement. The facility requires a high intensity proton beam (about 0.7x1013 particles/bunch) distributed in a short bunch (about 25 ns total length) to produce the neutrons by means of a spallation process in a lead target. To achieve these characteristics, a number of complex beam gymnastics have to be performed. All...

  11. Proposal to negotiate, without competitive tendering, a blanket order for high-voltage thyratrons for the CERN accelerators

    E-Print Network [OSTI]

    1999-01-01

    This document concerns the supply of thyratrons to be used as high-voltage and high-current switches for the fast-pulsed magnet systems of the CERN accelerators and for the protection of the klystrons of RF systems. In June 1981 the Finance Committee approved the placing, without competitive tendering, of a blanket order with EEV Ltd (UK) for a total value of up to 2 000 000 Swiss francs to cover the supply of thyratrons for the years 1982, 1983 and 1984. New blanket orders were subsequently negotiated for three-year periods with the approval of the Finance Committee in 1984, 1987, 1990 and 1993. After a new market survey in 1995-1996 had confirmed that EEV Ltd is the sole manufacturer of such thyratrons in the CERN Member States, a new blanket order was negotiated in 1996 with the approval of the Finance Committee. The Finance Committee is invited to agree to the negotiation, without competitive tendering, of a new blanket order with EEV Ltd (UK) for up to 800 000 pounds sterling to cover the supply of thyra...

  12. Making Data Structures Con uently Persistent Amos Fiat Haim Kaplan

    E-Print Network [OSTI]

    Fiat, Amos

    Making Data Structures Con uently Persistent Amos Fiat #3; Haim Kaplan #3; Reality is merely structure to be con uently persistent. Such transformations for fully persistent data structures are given. Unlike fully persistent data structures, where both the naive scheme and the fully persistent scheme

  13. Tratamiento pasivo de aguas de mina con altas

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    Tratamiento pasivo de aguas de mina con altas concentraciones de metales Resultados de ensayos en · Metodología · Resultados · Trabajos pendientes #12;Introducción Problemática de las aguas ácidas de mina 2.5 H2O Faja Pirítica Ibérica: · Mayor reserva de pirita del mundo · Aguas ácidas de mina con

  14. 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

  15. Study of deactivation and regeneration of catalysts used in the LC-fining of solvent refined coal

    SciTech Connect (OSTI)

    Curtis, C.W. (Auburn Univ., AL); Guin, J.A.; Nalitham, R.; mohsin, A.; Tarrer, A.R.; Potts, J.D.; Hastings, K.E.

    1981-03-29

    Batch experiments as well as results from LC-Fining catalytic upgrading of coal extracts indicate deactivation of the Shell 324 Ni/Mo catalyst in the presence of solvent refined coal (SRC). At increased levels of SRC loading, deactivation increases. The chief cause of catalyst deactivation appears to be coking. The Shell 324 catalyst can be substantially regenerated after the upgrading reaction by medium temperature ashing followed by presulfiding.

  16. Solvent refined coal (SRC) process. Quarterly technical progress report, January 1980-March 1980. [In process streams

    SciTech Connect (OSTI)

    Not Available

    1981-01-01

    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.

  17. Matematica con Esercitazioni 22. 11. 2014 1. Risolvere il seguente sistema lineare con l'algoritmo di Gauss-Jordan

    E-Print Network [OSTI]

    Achilles, Rüdiger

    Matematica con Esercitazioni 22. 11. 2014 1. Risolvere il seguente sistema lineare con l'algoritmo l'eliminazione di Gauss e considerare il sistema equivalente triangolare. 4. Si usi l'algoritmo di Suggerimento: Si usi l'algoritmo di Gauss per ridurre le matrici a scala per righe. 6. (Bramanti

  18. A refined deflected gradient search program for solving nonlinear maximization problems 

    E-Print Network [OSTI]

    Clark, Raymond Earl

    1972-01-01

    '!"'6SEI!T STATUS QE SE'"lh'SI" TECH;I[IILiES I5 i3r". ". ' . . b J pr'ob le, ", s . '0 . in I I; hP. I ~ con cinua I ly 5oo!Ping so I 0 Lions . ' ', '. b '': r, oi oi I on, l?rIPr soIOP. 0!"I t'=5'I 3 of goodncs !Io!3erally the object of r ar... ) T ! 1 a is e act ly i'be salrle as (1!1) . F1etcher anoI I'or;, all f6] piesent an 1ri!uct1!re prooi tbat 'lie vcr. toes '. X. are 1! iiear1y 1:Ide;&erident eIaervectors of II g ', ll c;:rr r-c; o. II!e ! !1 . c'er! era, ''ierII 'e " ', iree '', e...

  19. CERN, the European Organization for Nuclear Research, was founded in 1954. It has become a prime example of international collaboration, with currently 20 Member

    E-Print Network [OSTI]

    installations, cooling towers, industrial facilities and heating plants. CERN also uses water to cool many types of water used by 60%. Minimizing noise Civil-engineering works, cooling and ventilation systems, a new cooling system for one of its big accelerators works in a closed loop, reducing the amount

  20. Single and double photonuclear excitations in Pb+Pb collisions at {radical}(s{sub NN})=2.76 TeV at the CERN Large Hadron Collider

    SciTech Connect (OSTI)

    Djuvsland, Oystein; Nystrand, Joakim

    2011-04-15

    Cross sections are calculated for single and double photon exchange in ultraperipheral Pb+Pb collisions at the CERN Large Hadron Collider. The particle production is simulated with the DPMJET event generator. Large cross sections are found for particle production around midrapidity, making these processes an important background to hadronic nuclear interactions at both the trigger and analysis levels.

  1. CERN, the European Organization for Nuclear Research, was founded in 1954. It has become a prime example of international collaboration, with currently 20 Member

    E-Print Network [OSTI]

    Rubbia and Simon van der Meer in 1984 Accelerators use powerful electric fields to give energy to beams of particles, and magnetic fields to guide the beams through the machines. The bigger machines are circular with each lap. Physicists at CERN explore matter using machines called particle accelerators

  2. DECAY STUDY OF HEAVY N~Z NUCLIDES Yu.N.Novikov, A.V.Popov, D.M.Seliverstov, and ISOLDE (CERN) --JYFL (Jyvaskyla) Collaboration

    E-Print Network [OSTI]

    Titov, Anatoly

    195 DECAY STUDY OF HEAVY N~Z NUCLIDES Yu.N.Novikov, A.V.Popov, D.M.Seliverstov, and ISOLDE (CERN. Meanwhile just above A ~ 60 due to the increasing importance of the Coulomb interaction, these nuclides are only weakly bound or even proton­unbound. Strong deformation of N = Z nuclides in A = 70-80 area

  3. Measurement of the 232Th Neutron Capture Cross Section at the CERN n{sub T}OF Facility

    SciTech Connect (OSTI)

    Aerts, G.; Andriamonje, S.; Berthoumieux, E.; Dridi, W.; Pancin, J.; Perrot, L.; Plukis, A. [CEA/Saclay - DSM, Gif-sur-Yvette (France); Abbondanno, U.; Milazzo, P.M.; Moreau, C. [Istituto Nazionale di Fisica Nucleare, Trieste (Italy); Alvarez, H.; Benlliure, J.; Cortina, D.; Duran, I.; Paradela, C. [Universidade de Santiago de Compostela (Spain); Alvarez-Velarde, F.; Cano-Ott, D.; Embid-Segura, M.; Guerrero, C.; Gonzalez-Romero, E. [Centro de Investigations Energeticas Medioambientales y Technologicas, Madrid (Spain)] [and others

    2005-05-24

    The use of a fuel cycle based on 232Th can substantially reduce the radiotoxicity of the produced nuclear waste since the lower atomic and mass number of thorium results in a strongly suppressed build-up of the higher actinides and especially americium and curium. The design and realization of nuclear power stations based on the use of thorium, either in a critical or subcritical system, require an accurate knowledge of the 232Th(n,{gamma}) reaction cross section. We have measured the neutron capture cross section of 232Th at the recently constructed neutron time-of-flight facility n{sub T}OF at CERN in the energy range from 1 eV to 1 MeV. In the resolved resonance region, the resonance parameters have been extracted. In the unresolved resonance region, the neutron capture cross section is given as point-wise data.

  4. Technology transfer at CERN a study on inter-organizational knowledge transfer within multi-national R&D collaborations

    E-Print Network [OSTI]

    Huuse, H; Streit-Bianchi, M

    2004-01-01

    This study focus on the knowledge aspect of inter-organizational technology transfer projects. We have studied two large R&D collaborations where CERN is involved as one of several participating organizations, in order to reveal the causalities related to the knowledge transfer processes within these projects. The objective of the study is to understand how knowledge transfer happens, identify influencing factors to the process, and finally investigate the outcome of such processes. The study is founded on a thorough literature review where we examine different aspects of inter-organizational knowledge transfer. Based on the theory, we develop an analytic framework and establish different elements in the knowledge transfer process to study in more detail. This framework illustrates the relation between the different elements in a knowledge transfer process and provides the structure for our empirical foundation. We perform an explanatory embedded multiple case study and analyze our findings in terms of th...

  5. Simulation study of electron cloud induced instabilities and emittance growth for the CERN Large Hadron Collider proton beam

    E-Print Network [OSTI]

    Benedetto, Elena; Schulte, Daniel; Rumolo, Giovanni

    2005-01-01

    The electron cloud may cause transverse single-bunch instabilities of proton beams such as those in the Large Hadron Collider (LHC) and the CERN Super Proton Synchrotron (SPS). We simulate these instabilities and the consequent emittance growth with the code HEADTAIL, which models the turn-by-turn interaction between the cloud and the beam. Recently some new features were added to the code, in particular, electric conducting boundary conditions at the chamber wall, transverse feedback, and variable beta functions. The sensitivity to several numerical parameters has been studied by varying the number of interaction points between the bunch and the cloud, the phase advance between them, and the number of macroparticles used to represent the protons and the electrons. We present simulation results for both LHC at injection and SPS with LHC-type beam, for different electron-cloud density levels, chromaticities, and bunch intensities. Two regimes with qualitatively different emittance growth are observed: above th...

  6. The Unified Hydrodynamics and the Pseudorapidity Distributions in Heavy Ion Collisions at BNL-RHIC and CERN-LHC Energies

    E-Print Network [OSTI]

    Jiang, Z J; Ma, K; Zhang, H L

    2015-01-01

    The charged particles produced in nucleus-nucleus collisions are divided into two parts. One is from the hot and dense matter created in collisions. The other is from leading particles. The hot and dense matter is assumed to expand according to unified hydrodynamics and freezes out into charged particles from a space-like hypersurface with a fixed proper time of Tau_FO.The leading particles are conventionally taken as the particles which inherit the quantum numbers of colliding nucleons and carry off most of incident energy. The rapidity distributions of the charged particles from these two parts are formulated analytically, and a comparison is made between the theoretical results and the experimental measurements performed in Au-Au and Pb-Pb collisions at the respective BNL-RHIC and CERN-LHC energies. The theoretical results are well consistent with experimental data.

  7. The Real-Time Data Analysis and Decision System for Particle Flux Detection in the LHC Accelerator at CERN.

    E-Print Network [OSTI]

    Zamantzas, C; Dehning, B

    2006-01-01

    The superconducting Large Hadron Collider (LHC) under construction at the European Organisation for Nuclear Research (CERN) is an accelerator unprecedented in terms of beam energy, particle production rate and also in the potential of self-destruction. Its operation requires a large variety of instrumentation, not only for the control of the beams, but also for the protection of the complex hardware systems. The Beam Loss Monitoring (BLM) system has to prevent the superconducting magnets from becoming normal conducting and protect the machine components against damages making it one of the most critical elements for the protection of the LHC. For its operation, the system requires 3600 detectors to be placed at various locations around the 27 km ring. The measurement system is sub-divided to the tunnel electronics, which are responsible for acquiring, digitising and transmitting the data, and the surface electronics, which receive the data via 2 km optical data links, process, analyze, store and issue warning...

  8. 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)

    2013-10-15

    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.

  9. Energy @ Awesome Con: Meet Our Panelists | Department of Energy

    Office of Environmental Management (EM)

    and cinema at Awesome Con. Have a question for our panelists? Post it on Twitter, Facebook, Google+ using AskEnergy or email it to newmedia@hq.doe.gov. Energy is awesome....

  10. Air-Con International: Order (2010-SE-0301)

    Broader source: Energy.gov [DOE]

    DOE ordered Air-Con International, Inc. to pay a civil penalty of $10,000 after finding Air-Con had distributed in commerce in the U.S. central air conditioning units that were not in conformity with the applicable energy conservation standards. DOE also found that, while some units were exported, none of the units were properly marked as imports intended for exportation.

  11. ,"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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Informationmonthly gasoline price to fall to $3.43U.S.longecReformulated Gasoline RefinerResidual Fuel

  12. 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)

    2012-03-15

    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.

  13. A Freestream-Preserving High-Order Finite-Volume Method for Mapped Grids with Adaptive-Mesh Refinement

    SciTech Connect (OSTI)

    Guzik, S; McCorquodale, P; Colella, P

    2011-12-16

    A fourth-order accurate finite-volume method is presented for solving time-dependent hyperbolic systems of conservation laws on mapped grids that are adaptively refined in space and time. Novel considerations for formulating the semi-discrete system of equations in computational space combined with detailed mechanisms for accommodating the adapting grids ensure that conservation is maintained and that the divergence of a constant vector field is always zero (freestream-preservation property). Advancement in time is achieved with a fourth-order Runge-Kutta method.

  14. DEPARTAMENTO DE MATEMATICAS MATE-1215 Clculo Integral con Ecuaciones Diferenciales (Honores)

    E-Print Network [OSTI]

    Ferri, Stefano

    DEPARTAMENTO DE MATEMATICAS MATE-1215 Cálculo Integral con Ecuaciones Diferenciales (Honores Integral con Ecuaciones Diferenciales), pero ofrece al estudiante una aproximación más a profundidad y sustitución de variables. El curso de Cálculo Integral con Ecuaciones Diferenciales (Honores) parte de allí

  15. 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.

    2012-05-08

    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

  16. 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; Shibahara, Yuji; Morimoto, Yasuyuki; Tokuyasu, Takashi; Takahashi, Nobuo; Tanaka, Yoshio; Sugitsue, Noritake

    2012-07-01

    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)

  17. A high-order finite-volume method for hyperbolic conservation laws on locally-refined grids

    SciTech Connect (OSTI)

    McCorquodale, Peter; Colella, Phillip

    2011-01-28

    We present a fourth-order accurate finite-volume method for solving time-dependent hyperbolic systems of conservation laws on Cartesian grids with multiple levels of refinement. The underlying method is a generalization of that in [5] to nonlinear systems, and is based on using fourth-order accurate quadratures for computing fluxes on faces, combined with fourth-order accurate Runge?Kutta discretization in time. To interpolate boundary conditions at refinement boundaries, we interpolate in time in a manner consistent with the individual stages of the Runge-Kutta method, and interpolate in space by solving a least-squares problem over a neighborhood of each target cell for the coefficients of a cubic polynomial. The method also uses a variation on the extremum-preserving limiter in [8], as well as slope flattening and a fourth-order accurate artificial viscosity for strong shocks. We show that the resulting method is fourth-order accurate for smooth solutions, and is robust in the presence of complex combinations of shocks and smooth flows.

  18. Crystal-structure refinement of zirconium-rich eudialyte and its place among calcium-poor eudialyte-group minerals

    SciTech Connect (OSTI)

    Aksenov, S. M., E-mail: aks.crys@gmail.com; Rastsvetaeva, R. K. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)] [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)

    2013-09-15

    The repeated refinement of the crystal structure of zirconium-rich eudialyte based on the X-ray diffraction data set collected earlier revealed new structural features. The trigonal unit-cell parameters are a = 14.222(3) A, c = 30.165(5) A, V = 5283.9 A{sup 3}. The refinement resulted in the reduction of the R factor from 0.045 (2347F > 4{sigma}(F)) to 0.035 (3124F > 3{sigma}(F)). It was found that the ordering of Ca and Fe in six-membered rings leads to the lowering of the symmetry to R3. An excess amount of zirconium (more than three atoms per symmetrically independent unit) is located in the M2 microregion in square and five-vertex polyhedral positions. However, this amount is insufficient to be dominant, and the deficiency of zirconium is compensated for by sodium atoms. Based on the new data, zirconium-rich eudialyte can be assigned to the oneillite subtype, being a zirconium-rich and aluminum variety of raslakite.

  19. CRYOGENICSCRYOGENICS @ CERN@ CERN with UNICOSwith UNICOS

    E-Print Network [OSTI]

    McDonald, Kirk

    according to project requirements : Instrumentation Control system (PLC ­ I/O) Supervision systems SCADA on industrial components: PLC and SCADA Define a standard hardware & generic software architecture Produce (Including Logic and Data-Base description) Generation of controls Data-Base Production code PLC ­ SCADA

  20. Co-operation agreement between CERN and the National Council for Scientific Research, Lebanon (CNRS-L) concerning Scientific and Technical Co-operation in High-Energy Physics

    E-Print Network [OSTI]

    2015-01-01

    Co-operation agreement between CERN and the National Council for Scientific Research, Lebanon (CNRS-L) concerning Scientific and Technical Co-operation in High-Energy Physics

  1. DC power supply for charging of a 12 KV 200 KJ energy storage capacitor battery of a 500 KA pulse system for the magnetic horn and reflectors of the CERN neutrino beam

    E-Print Network [OSTI]

    Langeseth, B

    1968-01-01

    DC power supply for charging of a 12 KV 200 KJ energy storage capacitor battery of a 500 KA pulse system for the magnetic horn and reflectors of the CERN neutrino beam

  2. Co-operation agreement between the European Organization for Nuclear Research (CERN) and the Government of People's Republic of Bangladesh concerning Education, Scientific and Technical Co-operation in High-Energy Physics

    E-Print Network [OSTI]

    2014-01-01

    Co-operation agreement between the European Organization for Nuclear Research (CERN) and the Government of People's Republic of Bangladesh concerning Education, Scientific and Technical Co-operation in High-Energy Physics

  3. O papel da cooperação internacional no desenvolvimento científico brasileiro : o caso do acordo entre o Brasil e a Organização Européia para a Pesquisa Nuclerar (CERN)

    E-Print Network [OSTI]

    Duarte, Rafael Pinto

    2007-01-01

    The present work studies the role of international cooperation on the Brazilian scientific and technological (S&T) development process, based on the case of the cooperation among Brazil and the European Organization for Nuclear Research (CERN). It starts at an analysis of the national strategies for S&T development since the 1970’s. The studies lead to a suggestion of a new strategic approach of a system beginning starting at activities of international S&T interchange and collaborations as initial stage that lead to International Cooperation, seen as the only one capable of create S&T development. The case of the Brazilian activities at CERN shows that International Cooperation generates S&T development only with long term assured financial and institutional support of the Government. The results point to the assumption that International Cooperation is an essential element for elaboration and execution of public policies that aim national development on science and technology.

  4. Aplicacin del paradigma CellDEVS binario con tiempo para modelado y simulacin de sistemas

    E-Print Network [OSTI]

    Wainer, Gabriel

    procedimiento para acoplar celdas. Estos mode­ los pueden demorarse usando construcciones asociadas con

  5. Experimentos en columnaExperimentos en columna con aporte de materialcon aporte de material

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    ;Algunos problemas #12;- Estabilidad en las medidas con algunos electrodos (Eh) - Perdida de líquido en la

  6. Enhanced ballistic performance of conned multi-layered ceramic targets against long rod penetrators through

    E-Print Network [OSTI]

    Espinosa, Horacio D.

    Enhanced ballistic performance of con®ned multi-layered ceramic targets against long rod 1998; in revised form 2 July 1999 Abstract Impact recovery experiments on con®ned multi-layered ceramic and two types of ceramics, viz., Alumina and TiB2. The combined material-structural response is examined

  7. FPGA and Software Design for the Qualification and Automated tests for the production of CERN Digital Acquisition Boards

    E-Print Network [OSTI]

    Laroussi, H; Lefevre, T; Degeest, A; Garcia, S; Tichon, J

    The VFC-HPC is an FPGA-based multipurpose board designed to be the new standard back-end for the Beam Instrumentation (BI) Group. This contribution is aimed to give a presentation of the test and qualification system designed to be used to verify the compliance of the VFC-HPC to the specifications. We will begin by presenting the CERN, the company, its main purpose and its brief history. Afterward, we will present the VFC-HPC, the purpose of this board and its mains characteristics. We will then focus on the work done to allow the test and qualification of the VFC-HPC. This project was focused on the test and qualification of the connectivity of the board, consisting of the FMC Connector and the SFPs. This work involved making several market surveys to choose the proper test components to be used (as FMC Mezzanines), setting up a test bench, implementing optical communications through SFPs, writing Verilog firmwares, writing software test routines in Python and measuring Bit Error Rates (BER) and eye diagrams...

  8. Sources of machine-induced background in the ATLAS and CMS detectors at the CERN Large Hadron Collider

    SciTech Connect (OSTI)

    Bruce, R.; et al.,

    2013-11-21

    One source of experimental background in the CERN Large Hadron Collider (LHC) is particles entering the detectors from the machine. These particles are created in cascades, caused by upstream interactions of beam protons with residual gas molecules or collimators. We estimate the losses on the collimators with SixTrack and simulate the showers with FLUKA and MARS to obtain the flux and distribution of particles entering the ATLAS and CMS detectors. We consider some machine configurations used in the first LHC run, with focus on 3.5 TeV operation as in 2011. Results from FLUKA and MARS are compared and a very good agreement is found. An analysis of logged LHC data provides, for different processes, absolute beam loss rates, which are used together with further simulations of vacuum conditions to normalize the results to rates of particles entering the detectors. We assess the relative importance of background from elastic and inelastic beam-gas interactions, and the leakage out of the LHC collimation system, and show that beam-gas interactions are the dominating source of machine-induced background for the studied machine scenarios. Our results serve as a starting point for the experiments to perform further simulations in order to estimate the resulting signals in the detectors.

  9. $^{62}$Ni($n,?$) and $^{63}$Ni($n,?$) cross sections measured at n_TOF/CERN

    E-Print Network [OSTI]

    C. Lederer; C. Massimi; E. Berthoumieux; N. Colonna; R. Dressler; C. Guerrero; F. Gunsing; F. Käppeler; N. Kivel; M. Pignatari; R. Reifarth; D. Schumann; A. Wallner; S. Altstadt; S. Andriamonje; J. Andrzejewski; L. Audouin; M. Barbagallo; V. Becares; F. Becvar; F. Belloni; B. Berthier; J. Billowes; V. Boccone; D. Bosnar; M. Brugger; M. Calviani; F. Calvino; D. Cano-Ott; C. Carrapico; F. Cerutti; E. Chiaveri; M. Chin; G. Cortes; M. A. Cortes-Giraldo; I. Dillmann; C. Domingo-Pardo; I. Duran; N. Dzysiuk; C. Eleftheriadis; M. Fernandez-Ordonez; A. Ferrari; K. Fraval; S. Ganesan; A. R. Garc?a; G. Giubrone; M. B. Gomez-Hornillos; I. F. Goncalves; E. Gonzalez-Romero; F. Gramegna; E. Griesmayer; P. Gurusamy; S. Harrisopulos; M. Heil; K. Ioannides; D. G. Jenkins; E. Jericha; Y. Kadi; D. Karadimos; G. Korschinek; M. Krticka; J. Kroll; C. Langer; E. Lebbos; H. Leeb; L. S. Leong; R. Losito; M. Lozano; A. Manousos; J. Marganiec; S. Marrone; T. Martinez; P. F. Mastinu; M. Mastromarco; M. Meaze; E. Mendoza; A. Mengoni; P. M. Milazzo; F. Mingrone; M. Mirea; W. Mondalaers; C. Paradela; A. Pavlik; J. Perkowski; R. Plag; A. Plompen; J. Praena; J. M. Quesada; T. Rauscher; A. Riego; F. Roman; C. Rubbia; R. Sarmento; P. Schillebeeckx; S. Schmidt; G. Tagliente; J. L. Tain; D. Tarr?o; L. Tassan-Got; A. Tsinganis; L. Tlustos; S. Valenta; G. Vannini; V. Variale; P. Vaz; A. Ventura; M. J. Vermeulen; R. Versaci; V. Vlachoudis; R. Vlastou; T. Ware; M. Weigand; C. Weiß; T. J. Wright; P. Zugec

    2014-03-19

    The cross section of the $^{62}$Ni($n,\\gamma$) reaction was measured with the time-of-flight technique at the neutron time-of-flight facility n_TOF at CERN. Capture kernels of 42 resonances were analyzed up to 200~keV neutron energy and Maxwellian averaged cross sections (MACS) from $kT=5-100$ keV were calculated. With a total uncertainty of 4.5%, the stellar cross section is in excellent agreement with the the KADoNiS compilation at $kT=30$ keV, while being systematically lower up to a factor of 1.6 at higher stellar temperatures. The cross section of the $^{63}$Ni($n,\\gamma$) reaction was measured for the first time at n_TOF. We determined unresolved cross sections from 10 to 270 keV with a systematic uncertainty of 17%. These results provide fundamental constraints on $s$-process production of heavier species, especially the production of Cu in massive stars, which serve as the dominant source of Cu in the solar system.

  10. Study of the background in the measuring station at the n_TOF facility at CERN: sources and solutions

    E-Print Network [OSTI]

    Zanini, L; Aerts, G; Andriamonje, Samuel A; Andrzejewski, J; Angelopoulous, A; Assimakopoulos, Panayiotis; Bacri, C-O; Badurek, G; Berthoumieux, E; Baumann, P; Beer, H; Benlliure, J; Berthier, B; Bondarenko, I; Borcea, C; Bos, A J J; Boscolo-Marchi, E; Bustreo, N; Calviño, F; Cano-Ott, D; Capote, R; Carlson, P; Charpak, Georges; Chauvin, N; Cennini, P; Chepel, V; Colonna, N; Cortés, G; Cortina-Gil, D; Corvi, F; Cusmano, A; Dababneh, S; Dahlfors, M; Damianoglou, D; David, S; Dimovasili, E; Domingo, C; Doroshenko, A; Duran-Escribano, I; Eleftheriadis, C; Embid, M; Ferrant, L; Ferrari, A; Ferreira-Marques, R; Frais-Kölbl, H; Furman, W; Fursov, B; Garzón, J A; Giomataris, Ioanis; Gledenov, Y; Gonzalez-Romero, E; Goverdovski, A; Gramegna, F; Griesmayer, E; Gunsing, F; Haefner, P; Haight, R; Heil, M; Herrera-martinez, A; Hollander, P; Ioannou, P; Isaev, S; Jericha, E; Kadi, Y; Kappeler, F; Karadimos, D; Karamanis, D; Kayukova, A; Kazakov, L; Kelic, A; Ketlerov, V; Kitis, G; Köhler, P E; Kopach, Y; Kossionides, E; Kroshkina, I; Lacoste, V; Lamboudis, C; Leeb, H; Leprêtre, A; Lopes, M; Lozano, M; Marrone, S; Martínez-Val, J M; Mastinu, P; Mengoni, A; Meunier, R; Mezentsev, A J; Milazzo, P; Minguez, E; Mitrofanov, V; Moreau, C; Müller, A; Nicolis, N; Nikolenkov, V; Oberhummer, Heinz; Pakou, A; Pancin, J; Papadopoulous, K; Papaevangelou, T; Paradela, C; Paradelis, T; Pavlik, A; Pavlopoulos, P; Perrez-Parra, A; Perriale, L; Perlado, J M; Peskov, Vladimir; Piksaikin, V; Plag, R; Plompen, A; Plukis, A; Poch, A; Policarpo, Armando; Popov, A; Popov, Y P; Pretel, C; Quesada, J M; Radermacher, E; Rapp, W; Rauscher, T; Reifarth, R; Rejmund, F; Rubbia, Carlo; Rudolf, G; Rullhusen, P; Sakelliou, L; Saldaña, F; Samylin, B; Savvidis, I; Savvidis, S; Sedyshev, P; Stéphan, C; Szalanski, P; Tagliente, G; Taín, J L; Tapia, C; Tassan-Got, L; Terchychnyi, R; Tsabaris, C; Tsangas, N; van Eijk, C W E; Vannini, G; Ventura, A; Villamarin, A; Vlachoudis, V; Vlastou, R; Voinov, A; Voss, F; Wendler, H; Wiescher, M; Wisshak, K; Zanini, L; Zeinalov, S; Zhuravlev, B; CERN. Geneva. SPS and LHC Division

    2001-01-01

    A background roughly two orders of magnitude higher than tolerable was found in the n_TOF facility at CERN during the first measurements [1]. This note describes a series of additional measurements performed in the n_TOF experimental area to study the origin and the characteristics of the background. The program of these measurements was determined taking into account the results from the simulations carried out by the EET group [2]. A first phase of measurements confirmed what was expected from the simulations, namely that the dominant source of background was due to neutrons generated by negative muon capture. Actions to reduce the background were taken according to the results from both measurements and simulations. An iron shielding wall 3.2 m thick was then placed in between the sweeping magnet and the second collimator, with the purpose of stopping most of the muons. In a second phase of measurements, results showed that the additional shielding reduced the main component of the background by about a fa...

  11. Large Area Silicon Tracking Detectors with Fast Signal Readout for the Large Hadron Collider (LHC) at CERN

    E-Print Network [OSTI]

    Köstner, S

    2005-01-01

    The Standard Model of elementary particles, which is summarized briefly in the second chapter, incorporates a number of successful theories to explain the nature and consistency of matter. However not all building blocks of this model could yet be tested by experiment. To confirm existing theories and to improve nowadays understanding of matter a new machine is currently being built at CERN, the Large Hadron Collider (LHC), described in the third chapter. LHC is a proton-proton collider which will reach unprecedented luminosities and center of mass energies. Five experiments are attached to it to give answers to questions like the existence of the Higgs meson, which allows to explain the mass content of matter, and the origin of CP-violation, which plays an important role in the baryogenesis of the universe. Supersymmetric theories, proposing a bosonic superpartner for each fermion and vice versa, will be tested. By colliding heavy ions, high energy and particle densities can be achieved and probed. This stat...

  12. Third-Party Evaluation of Petro Tex Hydrocarbons, LLC, ReGen Lubricating Oil Re-refining Process

    SciTech Connect (OSTI)

    Compere, A L; Griffith, William {Bill} L

    2009-04-01

    This report presents an assessment of market, energy impact, and utility of the PetroTex Hydrocarbons, LLC., ReGen process for re-refining used lubricating oil to produce Group I, II, and III base oils, diesel fuel, and asphalt. PetroTex Hydrocarbons, LLC., has performed extensive pilot scale evaluations, computer simulations, and market studies of this process and is presently evaluating construction of a 23 million gallon per year industrial-scale plant. PetroTex has obtained a 30 acre site in the Texas Industries RailPark in Midlothian Texas. The environmental and civil engineering assessments of the site are completed, and the company has been granted a special use permit from the City of Midlothian and air emissions permits for the Texas Commission on Environmental Quality.

  13. SPCDC: A user-friendly computational tool for the design and refinement of practical pulse combustion systems

    SciTech Connect (OSTI)

    Barr, P.K.; Keller, J.O. [Sandia National Labs., Albuquerque, NM (United States); Kezerle, J.A. [Gas Research Institute (United States)

    1995-07-01

    This paper reports on the development and use of a user-friendly, PC-executable computer code that can assist engineers in designing pulse combustors for specific applications and in refining existing units. This code represents the culmination of over 10 years of research and development in the field of pulse combustion. The Sandia Pulse Combustor Design Code, or SPCDC, couples both the fuel-air injection and the energy release to the time-varying pressure wave. Because the injection and combustion processes both drive and are driven by the wave dynamics, this model couples the major processes that occur in a pulse combustor. SPCDC can supplement the time-proven method of actually building and testing a prototype unit, and significantly reduce the number of units that must be tested. It will help produce a superior pulse combustion system tailored to a specific application and should help widen the range of successful applications.

  14. Enhancing adaptive sparse grid approximations and improving refinement strategies using adjoint-based a posteriori error estimates

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

    Jakeman, J. D.; Wildey, T.

    2015-01-01

    In this paper we present an algorithm for adaptive sparse grid approximations of quantities of interest computed from discretized partial differential equations. We use adjoint-based a posteriori error estimates of the interpolation error in the sparse grid to enhance the sparse grid approximation and to drive adaptivity. We show that utilizing these error estimates provides significantly more accurate functional values for random samples of the sparse grid approximation. We also demonstrate that alternative refinement strategies based upon a posteriori error estimates can lead to further increases in accuracy in the approximation over traditional hierarchical surplus based strategies. Throughout this papermore »we also provide and test a framework for balancing the physical discretization error with the stochastic interpolation error of the enhanced sparse grid approximation.« less

  15. PerCon: A Personal Digital Library for Heterogeneous Data

    E-Print Network [OSTI]

    Shipman, Frank

    PerCon: A Personal Digital Library for Heterogeneous Data Su Inn Park, Frank Shipman Center for the Study of Digital Libraries Department of Computer Science and Engineering Texas A&M University 1 a personal digital library of data. Users may then search, browse, visualize and annotate the data

  16. Estudio de dos ecuaciones parabolicas lineales con metodos de energia

    E-Print Network [OSTI]

    Granero, Rafael

    energ´ia. Daremos un ap´endice con los resultados m´as ´utiles en este tipo de c´alculos. Palabras clave sustancia y supongamos cierta la Ley de Fourier (que afirma que el flujo es proporcional al gradiente

  17. Emergency Factsheet for Tratando Agua Almacenada con Cloro

    E-Print Network [OSTI]

    Emergency Factsheet for Tratando Agua Almacenada con Cloro Monty C. Dozier, Profesor Asistente y Fertilidad de Suelos El Sistema Universitario Texas A&M Al tratamiento del agua potable para mejorar su contaminaciónbacteriológica del agua. Este método tambiénpuede ser usado por los propietarios de pozos de agua particulares

  18. -okfl ^ ORNL/CON-172 Linear Harmonic Analysis of Free-

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    Stirling Engines N. C. J. Chen F. P. Griffin OPERATED BY MARTIN MARIETTA ENERGY SYSTEMS, INC. #12;ORNL/CON-172 Engineering Technology Division* LINEAR HARMONIC ANALYSIS OF FREE-PISTON STIRLING/dynamic problem that is associated with a free-piston Stirling engine (FPSE). The governing equations

  19. Tesis de Licenciatura Entre k-coloreo y coloreo con

    E-Print Network [OSTI]

    Bonomo, Flavia

    Tesis de Licenciatura Entre k-coloreo y coloreo con listas: µ-coloreo Mariano Agust´in Cecowski imposible para que no terminara esta tesis, porque espero que siga haciendo lo mismo por varias d´ecadas m restringiendo la entrada a ciertas clases de grafos, como por ejemplo los grafos perfectos. El problema de

  20. Correccion Variacional de la Adherencia con Regularizacion Direccional aplicada a

    E-Print Network [OSTI]

    Correcci´on Variacional de la Adherencia con Regularizaci´on Direccional aplicada a Modelos radar, la altimetr´ia laser o los lidar, producen resultados precisos a un costo mucho m´as razonable inversamente proporcional a su distancia a las c´amaras. Los m´etodos autom´aticos para determinar modelos de

  1. Equal Channel Angular Pressing (ECAP) and Its Application to Grain Refinement of Al-Zn-Mg-Cu Alloy

    SciTech Connect (OSTI)

    Tekeli, Sueleyman; Gueral, Ahmet

    2011-12-10

    Microstructure of a metal can be considerably changed by severe plastic deformation techniques such as high pressure torsion, extrusion and equal-channel angular pressing (ECAP). Among these methods, ECAP is particularly attractive because it has a potential for introducing significant grain refinement and homogeneous microstructure into bulk materials. Typically, it reduces the grain size to the submicrometer level or even nanometer range and thus produces materials that are capable of exhibiting unusual mechanical properties. In the present study, a test unites for equal channel angular pressing was constructed and this system was used for Al-Zn-Mg-Cu alloy. After the optimization tests, it was seen that the most effective lubricant for the dies was MoS{sub 2}, the pressing pressure was around 25-35 ton and the pressing speed was 2 mm/s. By using these parameters, the Al-Zn-Mg-Cu alloy was successfully ECAPed up to 14 passes at 200 deg. C using route C. After ECAP tests, the specimens were characterized by transmission electron microscope (TEM), hardness and macrostructural investigations. It was seen that the plastic deformation in the ECAPed specimens occurred from edge to the centre like whirlpool. In addition, the deformation intensity increased with increasing pass number. The grain size of the specimens effectively also decreased with increasing pass number. That is, while the grain size of unECAPed specimen was 10 {mu}m, this value decreased to 300 nm after 14 passes. At the beginning, while there was a banding tendency in the grains toward deformation direction, homogeneous and equiaxed grains were formed with increasing pass number. This grain refinement was as a result of an interaction between shear strain and thermal recovery during ECAP processing. Hardness measurements showed that the hardness values increased up to 4 passes, decreased effectively at 6th pass, again increased at 8th pass and after this pass, the hardness again decreased due to dynamic recrystallization.

  2. High-resolution structure of the M14-type cytosolic carboxypeptidase from Burkholderia cenocepacia refined exploiting PDB-REDO strategies

    SciTech Connect (OSTI)

    Rimsa, Vadim; Eadsforth, Thomas C. [University of Dundee, Dundee DD1 5EH, Scotland (United Kingdom); Joosten, Robbie P. [Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam (Netherlands); Hunter, William N., E-mail: w.n.hunter@dundee.ac.uk [University of Dundee, Dundee DD1 5EH, Scotland (United Kingdom)

    2014-02-01

    The structure of a bacterial M14-family carboxypeptidase determined exploiting microfocus synchrotron radiation and highly automated refinement protocols reveals its potential to act as a polyglutamylase. A potential cytosolic metallocarboxypeptidase from Burkholderia cenocepacia has been crystallized and a synchrotron-radiation microfocus beamline allowed the acquisition of diffraction data to 1.9 Å resolution. The asymmetric unit comprises a tetramer containing over 1500 amino acids, and the high-throughput automated protocols embedded in PDB-REDO were coupled with model–map inspections in refinement. This approach has highlighted the value of such protocols for efficient analyses. The subunit is constructed from two domains. The N-terminal domain has previously only been observed in cytosolic carboxypeptidase (CCP) proteins. The C-terminal domain, which carries the Zn{sup 2+}-containing active site, serves to classify this protein as a member of the M14D subfamily of carboxypeptidases. Although eukaryotic CCPs possess deglutamylase activity and are implicated in processing modified tubulin, the function and substrates of the bacterial family members remain unknown. The B. cenocepacia protein did not display deglutamylase activity towards a furylacryloyl glutamate derivative, a potential substrate. Residues previously shown to coordinate the divalent cation and that contribute to peptide-bond cleavage in related enzymes such as bovine carboxypeptidase are conserved. The location of a conserved basic patch in the active site adjacent to the catalytic Zn{sup 2+}, where an acetate ion is identified, suggests recognition of the carboxy-terminus in a similar fashion to other carboxypeptidases. However, there are significant differences that indicate the recognition of substrates with different properties. Of note is the presence of a lysine in the S1? recognition subsite that suggests specificity towards an acidic substrate.

  3. A revised partiality model and post-refinement algorithm for X-ray free-electron laser data

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

    Ginn, Helen Mary; Brewster, Aaron S.; Hattne, Johan; Evans, Gwyndaf; Wagner, Armin; Grimes, Jonathan M.; Sauter, Nicholas K.; Sutton, Geoff; Stuart, David Ian

    2015-05-23

    Research towards using X-ray free-electron laser (XFEL) data to solve structures using experimental phasing methods such as sulfur single-wavelength anomalous dispersion (SAD) has been hampered by shortcomings in the diffraction models for X-ray diffraction from FELs. Owing to errors in the orientation matrix and overly simple partiality models, researchers have required large numbers of images to converge to reliable estimates for the structure-factor amplitudes, which may not be feasible for all biological systems. Here, data for cytoplasmic polyhedrosis virus type 17 (CPV17) collected at 1.3 Å wavelength at the Linac Coherent Light Source (LCLS) are revisited. A previously published definitionmore »of a partiality model for reflections illuminated by self-amplified spontaneous emission (SASE) pulses is built upon, which defines a fraction between 0 and 1 based on the intersection of a reflection with a spread of Ewald spheres modelled by a super-Gaussian wavelength distribution in the X-ray beam. A method of post-refinement to refine the parameters of this model is suggested. This has generated a merged data set with an overall discrepancy (by calculating theRsplitvalue) of 3.15% to 1.46 Å resolution from a 7225-image data set. The atomic numbers of C, N and O atoms in the structure are distinguishable in the electron-density map. There are 13 S atoms within the 237 residues of CPV17, excluding the initial disordered methionine. These only possess 0.42 anomalous scattering electrons each at 1.3 Å wavelength, but the 12 that have single predominant positions are easily detectable in the anomalous difference Fourier map. It is hoped that these improvements will lead towards XFEL experimental phase determination and structure determination by sulfur SAD and will generally increase the utility of the method for difficult cases.« less

  4. Refinement of the Kansas City Plant site conceptual model with respect to dense non-aqueous phase liquids (DNAPL)

    SciTech Connect (OSTI)

    Korte, N.E.; Hall, S.C.; Baker, J.L.

    1995-10-01

    This document presents a refinement of the site conceptual model with respect to dense non-aqueous phase liquid (DNAPL) at the US Department of Energy Kansas City Plant (KCP). This refinement was prompted by a review of the literature and the results of a limited study that was conducted to evaluate whether pools of DNAPL were present in contaminated locations at the KCP. The field study relied on the micropurge method of sample collection. This method has been demonstrated as a successful approach for obtaining discrete samples within a limited aquifer zone. Samples were collected at five locations across 5-ft well screens located at the base of the alluvial aquifer at the KCP. The hypothesis was that if pools of DNAPL were present, the dissolved concentration would increase with depth. Four wells with highly contaminated groundwater were selected for the test. Three of the wells were located in areas where DNAPL was suspected, and one where no DNAPL was believed to be present. The results demonstrated no discernible pattern with depth for the four wells tested. A review of the data in light of the available technical literature suggests that the fine-grained nature of the aquifer materials precludes the formation of pools. Instead, DNAPL is trapped as discontinuous ganglia that are probably widespread throughout the aquifer. The discontinuous nature of the DNAPL distribution prevents the collection of groundwater samples with concentrations approaching saturation. Furthermore, the results indicate that attempts to remediate the aquifer with conventional approaches will not result in restoration to pristine conditions because the tortuous groundwater flow paths will inhibit the efficiency of fluid-flow-based treatments.

  5. IDENTIFICACIN Macho con dorso alar azul, con un borde negro limitado al margen o prolongndose por las

    E-Print Network [OSTI]

    García-Barros, Enrique

    se en- cuentra la forma típica), con más localidades registradas en Asturias, País Vasco y áreas Conservación Observaciones Suárez, 2006 Mortera, 2007 Allande Asturias 29TPH89 NE Suárez, 2006 Mortera, 2007 Sierra de la Bobia Asturias 29TPJ60 NE Suárez, 2006 Mortera, 2007 Villalón Asturias 29TPJ80 NE Arias y

  6. Refinement of Mg{sub 2}Si reinforcement in a commercial Al–20%Mg{sub 2}Si in-situ composite with bismuth, antimony and strontium

    SciTech Connect (OSTI)

    Nordin, Nur Azmah; Farahany, Saeed, E-mail: saeedfarahany@gmail.com; Ourdjini, Ali; Abu Bakar, Tuty Asma; Hamzah, Esah

    2013-12-15

    Refinement by addition elements of Al–Mg{sub 2}Si alloys is known to result in a change of primary Mg{sub 2}Si morphology. In this paper, the effects of Bi, Sb and Sr on the characteristic parameters of Al–20%Mg{sub 2}Si in-situ composite have been investigated by computer aided cooling curve thermal analysis and microstructural inspection. Size, density and aspect ratio measurements showed that additions of 0.4 wt.% Bi, 0.8 wt.% Sb and 0.01 wt.% Sr refined the Mg{sub 2}Si reinforcement. Exceeding these concentrations, however, resulted in coarsening of Mg{sub 2}Si particles with no change in the morphology. The results also showed that addition elements caused a decrease in the nucleation and growth temperatures of Mg{sub 2}Si particles. The refining effect of Bi, Sb and Sr is likely to be related to the effect of oxide bifilms suspended in the composite melt as favored nucleation substrates for Mg{sub 2}Si particles. - Highlight: • 0.4 wt.%, 0.8 wt.% and 0.01 wt.% is the optimum content for Bi, Sb and Sr addition. • Exceeding optimum concentration resulted in the coarsening of reinforcements. • Nucleation and growth temperatures decrease with addition of Bi, Sb and Sr. • The refining effect of Bi, Sb and Sr is likely to be related to the oxide bifilms.

  7. PbSrYCaCuO : a new class of superconducting materials. Chemical analyses refined by Energy Dispersive X-rays

    E-Print Network [OSTI]

    Boyer, Edmond

    39 PbSrYCaCuO : a new class of superconducting materials. Chemical analyses refined by Energy of superconducting material - PbSrYCaCuO - has been recently synthesized. Energy Dispersive X-ray analyses synthesized a new class of superconducting materials, which can be represented by the general formula Pb2Sr2R1

  8. JOURNAL OF GEOPHYSICAL RESEARCH, VOL. ???, XXXX, DOI:10.1029/, Refinements to flare energy estimates -a follow-up to "Energy

    E-Print Network [OSTI]

    California at Berkeley, University of

    to arrive at an overall energy budget for the event. The best estimates for the energies of the variousJOURNAL OF GEOPHYSICAL RESEARCH, VOL. ???, XXXX, DOI:10.1029/, Refinements to flare energy estimates - a follow-up to "Energy Partition in Two Solar Flare/CME Events" A. G. Emslie, 1 B. R. Dennis 2

  9. 3698 A. Hernandez-Solis et al. / Nuclear Engineering and Design 241 (2011) 36973706 The need to validate and refine BE codes that are used in

    E-Print Network [OSTI]

    Demazière, Christophe

    2011-01-01

    transition in boiling water reactors (BWRs), NUPEC performed from 1987 to 1990 a series of radial void to validate and refine BE codes that are used in the predictions of relevant reactor safety parameters, led a fuel assembly, which has been regarded as an important factor in the determination of boiling

  10. TECHNICAL PUBLICATIONS & BOOKS PRESENTED/PUBLISHED GOMES J.S. & ALVES, F.B. (2013): "The Universe of the Oil & Gas Industry From Exploration to Refining", 780

    E-Print Network [OSTI]

    Williams, John M.

    2013-01-01

    Universe of the Oil & Gas Industry ­ From Exploration to Refining", 780 pages University textbook published by PARTEX Oil & Gas, Lisbon, Portugal. ISBN 9789892037783. GOMES J.S. (2012): "New Technologies in the Oil and Gas Industry", edited by J.S. Gomes, published by INTECH open science (www

  11. Document: P1332 Category: Physical Sciences, Chemical/Materials License Status: Available for licensing Texas Industry Cluster: Petroleum Refining & Chemical Products

    E-Print Network [OSTI]

    Lightsey, Glenn

    Description This technology describes an inexpensive, metallic, non-platinum-based fuel cell electrocatalyst for licensing Texas Industry Cluster: Petroleum Refining & Chemical Products Lower-cost fuel cells Problem The advantages of fuel-cell use are compelling. Fuel cells are cleaner and safer for the environment

  12. 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

    The third, use of quantum mechanics to evaluate the molecular energy and forces, holds promise for future refinements when applied wholesale, but is already capable of producing valuable insight when applied to struc- tural detail. Calculation of macromolecular energy and forces with quan- tum mechanics

  13. 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.

    , When to Invest? Only optimize streams transfers (oil and fuels import/export, market supply) + NLP Processing Blending Quantitative Methods for Strategic and Investment Planning in the Oil-Refining Industry capacity QC= total capacity Capital Investment Planning Formulation (R,U,N,T) R=Refinery U=Unit type N

  14. A study of the link between cosmic rays and clouds with a cloud chamber at the CERN PS

    E-Print Network [OSTI]

    The Cloud Collaboration

    2001-04-16

    Recent satellite data have revealed a surprising correlation between galactic cosmic ray (GCR) intensity and the fraction of the Earth covered by clouds. If this correlation were to be established by a causal mechanism, it could provide a crucial step in understanding the long-sought mechanism connecting solar and climate variability. The Earth's climate seems to be remarkably sensitive to solar activity, but variations of the Sun's electromagnetic radiation appear to be too small to account for the observed climate variability. However, since the GCR intensity is strongly modulated by the solar wind, a GCR-cloud link may provide a sufficient amplifying mechanism. Moreover if this connection were to be confirmed, it could have profound consequences for our understanding of the solar contributions to the current global warming. The CLOUD (Cosmics Leaving OUtdoor Droplets) project proposes to test experimentally the existence a link between cosmic rays and cloud formation, and to understand the microphysical mechanism. CLOUD plans to perform detailed laboratory measurements in a particle beam at CERN, where all the parameters can be precisely controlled and measured. The beam will pass through an expansion cloud chamber and a reactor chamber where the atmosphere is to be duplicated by moist air charged with selected aerosols and trace condensable vapours. An array of external detectors and mass spectrometers is used to analyse the physical and chemical characteristics of the aerosols and trace gases during beam exposure. Where beam effects are found, the experiment will seek to evaluate their significance in the atmosphere by incorporating them into aerosol and cloud models.

  15. Study of cosmic ray events with high muon multiplicity using the ALICE detector at the CERN Large Hadron Collider

    E-Print Network [OSTI]

    ALICE Collaboration

    2015-07-27

    ALICE is one of four large experiments at the CERN Large Hadron Collider near Geneva, specially designed to study particle production in ultra-relativistic heavy-ion collisions. Located 52 meters underground with 28 meters of overburden rock, it has also been used to detect muons produced by cosmic ray interactions in the upper atmosphere. In this paper, we present the multiplicity distribution of these atmospheric muons and its comparison with Monte Carlo simulations. This analysis exploits the large size and excellent tracking capability of the ALICE Time Projection Chamber. A special emphasis is given to the study of high multiplicity events containing more than 100 reconstructed muons and corresponding to a muon areal density $\\rho_{\\mu} > 5.9~$m$^{-2}$. Similar events have been studied in previous underground experiments such as ALEPH and DELPHI at LEP. While these experiments were able to reproduce the measured muon multiplicity distribution with Monte Carlo simulations at low and intermediate multiplicities, their simulations failed to describe the frequency of the highest multiplicity events. In this work we show that the high multiplicity events observed in ALICE stem from primary cosmic rays with energies above $10^{16}$ eV and that the frequency of these events can be successfully described by assuming a heavy mass composition of primary cosmic rays in this energy range. The development of the resulting air showers was simulated using the latest version of QGSJET to model hadronic interactions. This observation places significant constraints on alternative, more exotic, production mechanisms for these events.

  16. Surface Protonation at the Rutile (110) Interface: Explicit Incorporation of Solvation Structure within the Refined MUSIC Model Framework

    SciTech Connect (OSTI)

    Machesky, Michael L.; Predota, M.; Wesolowski, David J

    2008-11-01

    The detailed solvation structure at the (110) surface of rutile ({alpha}-TiO{sub 2}) in contact with bulk liquid water has been obtained primarily from experimentally verified classical molecular dynamics (CMD) simulations of the ab initio-optimized surface in contact with SPC/E water. The results are used to explicitly quantify H-bonding interactions, which are then used within the refined MUSIC model framework to predict surface oxygen protonation constants. Quantum mechanical molecular dynamics (QMD) simulations in the presence of freely dissociable water molecules produced H-bond distributions around deprotonated surface oxygens very similar to those obtained by CMD with nondissociable SPC/E water, thereby confirming that the less computationally intensive CMD simulations provide accurate H-bond information. Utilizing this H-bond information within the refined MUSIC model, along with manually adjusted Ti-O surface bond lengths that are nonetheless within 0.05 {angstrom} of those obtained from static density functional theory (DFT) calculations and measured in X-ray reflectivity experiments (as well as bulk crystal values), give surface protonation constants that result in a calculated zero net proton charge pH value (pHznpc) at 25 C that agrees quantitatively with the experimentally determined value (5.4 {+-} 0.2) for a specific rutile powder dominated by the (110) crystal face. Moreover, the predicted pH{sub znpc} values agree to within 0.1 pH unit with those measured at all temperatures between 10 and 250 C. A slightly smaller manual adjustment of the DFT-derived Ti-O surface bond lengths was sufficient to bring the predicted pH{sub znpc} value of the rutile (110) surface at 25 C into quantitative agreement with the experimental value (4.8 {+-} 0.3) obtained from a polished and annealed rutile (110) single crystal surface in contact with dilute sodium nitrate solutions using second harmonic generation (SHG) intensity measurements as a function of ionic strength. Additionally, the H-bond interactions between protolyzable surface oxygen groups and water were found to be stronger than those between bulk water molecules at all temperatures investigated in our CMD simulations (25, 150 and 250 C). Comparison with the protonation scheme previously determined for the (110) surface of isostructural cassiterite ({alpha}-SnO{sub 2}) reveals that the greater extent of H-bonding on the latter surface, and in particular between water and the terminal hydroxyl group (Sn-OH) results in the predicted protonation constant for that group being lower than for the bridged oxygen (Sn-O-Sn), while the reverse is true for the rutile (110) surface. These results demonstrate the importance of H-bond structure in dictating surface protonation behavior, and that explicit use of this solvation structure within the refined MUSIC model framework results in predicted surface protonation constants that are also consistent with a variety of other experimental and computational data.

  17. Structure of 2 molar NaOH in aqueous solution from neutron diffraction and empirical potential structure refinement

    SciTech Connect (OSTI)

    McLain, Sylvia E.; Imberti, Silvia; Soper, Alan K.; Botti, Alberto; Bruni, Fabio; Ricci, Maria Antonietta

    2006-09-01

    Neutron diffraction with isotopic substitution has been used to investigate aqueous solutions of 2M NaOH in the liquid state. The data were modeled using empirical potential structure refinement which allows for the extraction of the ion-water and water-water correlations. The data show that the ion-water radial distribution functions are in accordance with those found by previous studies on NaOH solutions and follow a trend which is dependent on the concentration of the solute. In particular, the shape of the hydroxide hydration shell is found to be concentration independent, but the number of water molecules occupying this shell increases with dilution. Additionally, the water-water correlations show that there is still a measurable effect on water structure with the addition of ions at this concentration, as the second shell in the water oxygen radial distribution function is compressed relative to the first shell. The data are also used to discuss the recent claims that the published radial distribution functions of water are unreliable, showing that data taken at different neutron sources, with different diffraction geometry and systematic errors lead to the same structural information when analyzed via a realistic modeling regime.

  18. Solving the relativistic magnetohydrodynamics equations with ADER discontinuous Galerkin methods, a posteriori subcell limiting and adaptive mesh refinement

    E-Print Network [OSTI]

    Zanotti, Olindo; Dumbser, Michael

    2015-01-01

    We present a new numerical tool for solving the special relativistic ideal MHD equations that is based on the combination of the following three key features: (i) a one-step ADER discontinuous Galerkin (DG) scheme that allows for an arbitrary order of accuracy in both space and time, (ii) an a posteriori subcell finite volume limiter that is activated to avoid spurious oscillations at discontinuities without destroying the natural subcell resolution capabilities of the DG finite element framework and finally (iii) a space-time adaptive mesh refinement (AMR) framework with time-accurate local time-stepping. The divergence-free character of the magnetic field is instead taken into account through the so-called 'divergence-cleaning' approach. The convergence of the new scheme is verified up to 5th order in space and time and the results for a sample of significant numerical tests including shock tube problems, the RMHD rotor problem and the Orszag-Tang vortex system are shown. We also consider a simple case of t...

  19. A top-down assessment of energy, water and land use in uranium mining, milling, and refining

    SciTech Connect (OSTI)

    E. Schneider; B. Carlsen; E. Tavrides; C. van der Hoeven; U. Phathanapirom

    2013-11-01

    Land, water and energy use are key measures of the sustainability of uranium production into the future. As the most attractive, accessible deposits are mined out, future discoveries may prove to be significantly, perhaps unsustainably, more intensive consumers of environmental resources. A number of previous attempts have been made to provide empirical relationships connecting these environmental impact metrics to process variables such as stripping ratio and ore grade. These earlier attempts were often constrained by a lack of real world data and perform poorly when compared against data from modern operations. This paper conditions new empirical models of energy, water and land use in uranium mining, milling, and refining on contemporary data reported by operating mines. It shows that, at present, direct energy use from uranium production represents less than 1% of the electrical energy produced by the once-through fuel cycle. Projections of future energy intensity from uranium production are also possible by coupling the empirical models with estimates of uranium crustal abundance, characteristics of new discoveries, and demand. The projections show that even for the most pessimistic of scenarios considered, by 2100, the direct energy use from uranium production represents less than 3% of the electrical energy produced by the contemporary once-through fuel cycle.

  20. A procedure for the estimation of the numerical uncertainty of CFD calculations based on grid refinement studies

    SciTech Connect (OSTI)

    Eça, L.; Hoekstra, M.

    2014-04-01

    This paper offers a procedure for the estimation of the numerical uncertainty of any integral or local flow quantity as a result of a fluid flow computation; the procedure requires solutions on systematically refined grids. The error is estimated with power series expansions as a function of the typical cell size. These expansions, of which four types are used, are fitted to the data in the least-squares sense. The selection of the best error estimate is based on the standard deviation of the fits. The error estimate is converted into an uncertainty with a safety factor that depends on the observed order of grid convergence and on the standard deviation of the fit. For well-behaved data sets, i.e. monotonic convergence with the expected observed order of grid convergence and no scatter in the data, the method reduces to the well known Grid Convergence Index. Examples of application of the procedure are included. - Highlights: • Estimation of the numerical uncertainty of any integral or local flow quantity. • Least squares fits to power series expansions to handle noisy data. • Excellent results obtained for manufactured solutions. • Consistent results obtained for practical CFD calculations. • Reduces to the well known Grid Convergence Index for well-behaved data sets.

  1. DOE Requires Air-Con International to Cease Sales of Inefficient...

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

    Penalty to Air-Con, International, requiring Air-Con to cease the sale of certain air-conditioning systems in the United States and proposing a civil penalty of 231,090 for sales...

  2. Su un modello conservativo di tipo Penrose-Fife con condizioni di Neumann

    E-Print Network [OSTI]

    Rocca, Elisabetta

    modello di Penrose­Fife (consistente con il secondo principio della termodinamica) introdotto in [14]. Per

  3. Plataformas de soporte computacional: Programacion con MPI, Diego R. Llanos, Belen Palop

    E-Print Network [OSTI]

    Llanos, Diego R.

    Plataformas de soporte computacional: Programaci´on con MPI, parte 2 Diego R. Llanos, Bel´en Palop

  4. The english at Cern

    ScienceCinema (OSTI)

    None

    2011-04-25

    Assemblée du personnel anglais traitant des sujets tels affaires sociales, salaires, caisse de pension etc....avec plusieurs conférenciers (date inconnue)

  5. Signature ESO-CERN

    ScienceCinema (OSTI)

    None

    2011-04-25

    Le Prof.Gregory parle du commencement de la collaboration entre directoires et gens de l'organisation; d'autres personnalités prennent la parole

  6. Signature ESO-CERN

    SciTech Connect (OSTI)

    None

    2005-11-08

    Le Prof.Gregory parle du commencement de la collaboration entre directoires et gens de l'organisation; d'autres personnalités prennent la parole

  7. ConInvest GmbH | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar EnergyLawler,Coal TechnologiesClioCommunityLtdDevelopment JumpConInvest GmbH

  8. Oregon Trail El Cons Coop, Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop Inc Jump to:Newberg, Oregon:OGEProjects/DefinitionsOrchid Bioenergy GroupEl Cons

  9. ConSol (Building Industry Research Alliance) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButtePower Ventures JumpCommercial Jump(Thompson, 1985)(Laney, 2005)ComvergeConSol

  10. Case Study - Con Edison Smart Grid Investment Grant

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

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

  11. Refined assignment of the infantile neuronal ceroid lipofuscinosis (INCL, CLN1) locus at 1p32: Incorporation of linkage disequilibrium in multipoint analysis

    SciTech Connect (OSTI)

    Hellsten, E.; Vesa, J.; Peltonen, L.; Jaervela, I. (National Public Health Institute, Helsinki (Finland)); Speer, M.C.; Ott, J. (Columbia Univ., New York (United States) New York State Psychiatric Institute, New York (United States)); Maekelae, T.P.; Alitalo, K. (Univ. of Helsinki (Finland))

    1993-06-01

    Infantile neuronal ceroid lipofuscinosis, INCL, CLN1, is an autosomally inherited progressive neuro-generative disorder. The disease results in the massive death of cortical neurons, suggesting an essential role for the CLN1 gene product in the normal neuronal maturation during the first years of life. Identification of new multiallelic markers has now made possible the construction of a refined genetic map encompassing the CLN1 locus at 1p32. Strong allelic association was detected with a new, highly polymorphic HY-TM1 marker. The authors incorporated this observed linkage disequilibrium into multipoint linkage analysis, which significantly increased the informativeness of the limited family material and facilitated refined assignment of the CLN1 locus. 23 refs., 2 figs., 4 tabs.

  12. Chemical coal cleaning process and costs refinement for coal-water slurry manufacture. Semi-annual progress report

    SciTech Connect (OSTI)

    Bhasin, A.K.; Berggren, M.H.; Smit, F.J.; Ames, L.B.; Ronzio, N.J.

    1985-03-01

    The Department of Energy, through the Morgantown Energy Technology Center (METC), has initiated a program to determine the feasibility and potential applications for direct firing of coal and coal-derived fuels in heat engines, specifically gas turbines and diesel engines. AMAX Extractive Research and Development, Inc. supplied METC with two lots of highly beneficiated coal slurry fuel for use in the Heat Engines programs. One of the lots was of ultra-clean coal-water slurry fuel (UCCSF) for which a two-stage caustic and acid leaching procedure was developed to chemically clean the coal. As a part of the contract, AMAX R and D developed a conceptual design and preliminary cost estimate for a commercial-scale process for UCCSF manufacture. The contract was extended to include the following objectives: define chemical cleaning and slurry preparation process conditions and costs more precisely; investigate methods to reduce the product cost; and determine the relationship, in dollars per million Btu, between product cost and fuel quality. Laboratory investigations have been carried out to define the chemical cleaning process conditions required to generate fuels containing from 0.17 to 1.0% ash. Capital and operating cost refinements are to be performed on the basis of the preferred process operating conditions identified during the laboratory investigations. Several such areas for cost reductions have been identified. Caustic strengths from 2 to 7% NaOH are currently anticipated while 25% NaOH was used as the basis for the preliminary cost estimate. In addition, leaching times for each of the process steps have been reduced to half or less of the times used for the preliminary cost estimate. Improvement of fuel quality has been achieved by use of a proprietary hot-water leaching step to reduce the residual alkali content to less than 250 ppM (Na/sub 2/O plus K/sub 2/O) on a dry coal basis. 2 refs., 3 figs., 24 tabs.

  13. Apparatus for mercury refinement

    DOE Patents [OSTI]

    Grossman, M.W.; Speer, R.; George, W.A.

    1991-07-16

    The effluent from mercury collected during the photochemical separation of the [sup 196]Hg isotope is often contaminated with particulate mercurous chloride, Hg[sub 2]Cl[sub 2]. The use of mechanical filtering via thin glass tubes, ultrasonic rinsing with acetone (dimethyl ketone) and a specially designed cold trap have been found effective in removing the particulate (i.e., solid) Hg[sub 2]Cl[sub 2] contaminant. The present invention is particularly directed to such filtering. 5 figures.

  14. The Refinement Integral by

    E-Print Network [OSTI]

    Talvila, Erik

    into that of mathematics" that it b* *ecame usable. Cauchy approximated the "infinitesimal" f(x)dx (for a continuous

  15. Method for mercury refinement

    DOE Patents [OSTI]

    Grossman, Mark W. (Belmont, MA); Speer, Richard (Reading, MA); George, William A. (Rockport, MA)

    1991-01-01

    The effluent from mercury collected during the photochemical separation of the .sup.196 Hg isotope is often contaminated with particulate mercurous chloride, Hg.sub.2 Cl.sub.2. The use of mechanical filtering via thin glass tubes, ultrasonic rinsing with acetone (dimethyl ketone) and a specially designed cold trap have been found effective in removing the particulate (i.e., solid) Hg.sub.2 Cl.sub.2 contaminant. The present invention is particularly directed to such filtering.

  16. 1996 worldwide refining survey

    SciTech Connect (OSTI)

    NONE

    1996-12-23

    Data are presented on the capacity of refineries for the following processes: vacuum distillation, coking, catalytic cracking, catalytic reforming, catalytic hydrocracking, catalytic hydrorefining, and catalytic hydrotreating. Production capacities are also noted for alkylation, polymerization/dimerization, aromatics, isomerization, lubricants, oxygenates, hydrogen, coke, sulfur, and asphalts. Country totals are given, as well as the data for individual companies within each country, state, or province.

  17. Apparatus for mercury refinement

    DOE Patents [OSTI]

    Grossman, Mark W. (Belmont, MA); Speer, Richard (Reading, MA); George, William A. (Rockport, MA)

    1991-01-01

    The effluent from mercury collected during the photochemical separation of the .sup.196 Hg isotope is often contaminated with particulate mercurous chloride, Hg.sub.2 Cl.sub.2. The use of mechanical filtering via thin glass tubes, ultrasonic rinsing with acetone (dimethyl ketone) and a specially designed cold trap have been found effective in removing the particulate (i.e., solid) Hg.sub.2 Cl.sub.2 contaminant. The present invention is particularly directed to such filtering.

  18. Refining climate models

    ScienceCinema (OSTI)

    Warren, Jeff; Iversen, Colleen; Brooks, Jonathan; Ricciuto, Daniel

    2014-06-26

    Using dogwood trees, Oak Ridge National Laboratory researchers are gaining a better understanding of the role photosynthesis and respiration play in the atmospheric carbon dioxide cycle. Their findings will aid computer modelers in improving the accuracy of climate simulations.

  19. Method for mercury refinement

    DOE Patents [OSTI]

    Grossman, M.W.; Speer, R.; George, W.A.

    1991-04-09

    The effluent from mercury collected during the photochemical separation of the [sup 196]Hg isotope is often contaminated with particulate mercurous chloride, Hg[sub 2]Cl[sub 2]. The use of mechanical filtering via thin glass tubes, ultrasonic rinsing with acetone (dimethyl ketone) and a specially designed cold trap have been found effective in removing the particulate (i.e., solid) Hg[sub 2]Cl[sub 2] contaminant. The present invention is particularly directed to such filtering. 5 figures.

  20. Refining climate models

    SciTech Connect (OSTI)

    Warren, Jeff; Iversen, Colleen; Brooks, Jonathan; Ricciuto, Daniel

    2012-10-31

    Using dogwood trees, Oak Ridge National Laboratory researchers are gaining a better understanding of the role photosynthesis and respiration play in the atmospheric carbon dioxide cycle. Their findings will aid computer modelers in improving the accuracy of climate simulations.