56 research outputs found

    The challenges and opportunities of addressing particle size effects in sediment source fingerprinting: A review

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    publisher: Elsevier articletitle: The challenges and opportunities of addressing particle size effects in sediment source fingerprinting: A review journaltitle: Earth-Science Reviews articlelink: http://dx.doi.org/10.1016/j.earscirev.2017.04.009 content_type: article copyright: © 2017 Elsevier B.V. All rights reserved

    Maladie d'Alzheimer et profil normal des biomarqueurs du liquide céphalo-rachidien

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    LILLE2-BU Santé-Recherche (593502101) / SudocSudocFranceF

    Mycotoxines dans l'alimentation (évaluation et gestion du risque sanitaire pour l'homme et son environnement)

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    LILLE2-BU Santé-Recherche (593502101) / SudocSudocFranceF

    Impact of Overwhelming Joy on Consumer Demand : The Case of a Soccer World-Cup Victory

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    Consumer sentiment is a key determinant of the demand for any good or service. However, the identification of periods of pessimistic or optimistic mood remains challenging in practice. In this paper, we consider a natural experiment based on the Soccer World Cup. We identify the period following a Soccer World-Cup victory as a period of overwhelming joy for the winning country. Then, we test the impact of a World-Cup victory on the demand for Soccer in this country. Our empirical study is based on all matches of the French Soccer First League during the four seasons surrounding the 1998 World Cup. After controlling for the main determinants of attendance, we find that consumer demand has positively, significantly, and durably shifted following the 1998 World Cup. The World-Cup effect persists after we control for season-ticket holders. Finally, we find that the rise in demand is primarily due to infrastructure and victory effects, and not to hosting effects

    Copper-Catalyzed Silylcupration of Activated Alkynes

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    A highly efficient catalytic silylcupration of activated alkynes is reported. Upon reaction with silylboronates and methanol in THF at room temperature in the presence of copper(I) fluoride tris(triphenylphosphine), a range of ynamides and propiolates were found to undergo a smooth silylcupration. This reaction, which tolerates various functional groups, affords a straightforward and efficient entry to the corresponding beta-silyl- enamides and acrylates which were formed with high levels of regio- and stereo- selectivities.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

    Copper-catalyzed Hiyama cross-coupling using vinylsilanes and benzylic electrophiles

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    Allylbenzene derivatives are ubiquitous frameworks in organic chemistry. Herein is described an efficient copper-catalyzed cross-coupling reaction using vinylsilanes and benzyl bromides, leading to the synthesis of allylbenzenes. This methodology allows the use of cis, trans and 1,1′-disubstituted vinylsilanes as well as a large number of sensitive moieties. © the Partner Organisations 2014

    Cu-I/Pd-0 cooperative dual catalysis : tunable stereoselective construction of tetra-substituted alkenes

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    This paper describes a tunable and stereoselective dual catalytic system that uses copper and palladium reagents. This cooperative silylcupration and palladium-catalyzed allylation readily affords trisubstituted alkenylsilanes. Fine-tuning the reaction conditions allows selective access to one stereoisomer over the other. This new methodology tolerates different substituents on both coupling partners with high levels of stereoselectivity. The one-pot reaction involving a Cu-I/Pd-0 cooperative dual catalyst directly addresses the need to develop more time-efficient and less-wasteful synthetic pathways
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