Výsledky vyhledávání - "Julien Lévêque"

Theoretical study of the magnetic properties of BaNiF4

Autor: Julien Lévêque, Andrés Saúl, Marie-Bernadette Lepetit, Elisa Rebolini

Publikováno v: The European Physical Journal B: Condensed Matter and Complex Systems
The European Physical Journal B: Condensed Matter and Complex Systems, Springer-Verlag, 2021, 94 (10), pp.214. ⟨10.1140/epjb/s10051-021-00225-5⟩
The European Physical Journal B: Condensed Matter and Complex Systems, 2021, 94 (10), pp.214. ⟨10.1140/epjb/s10051-021-00225-5⟩

In this article we study the magnetic properties of the BaNiF $$_4$$ compound using ab-initio calculations and classical Monte-Carlo methods. We discuss the physical origin of the long range magnetic order. We show that the leading exchange interacti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2553ca723d61362a7f9ce2beb9ca2a74
https://hal.archives-ouvertes.fr/hal-03403829/document

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Hydrodynamics and mass transfer in a tubular reactor containing foam packings for intensification of G-L-S catalytic reactions in co-current up-flow configuration

Autor: Régis Philippe, Valérie Meille, Claude de Bellefon, Loïc Baussaron, Julien Lévêque, Marie-Line Zanota, Flavie Sarrazin

Publikováno v: Chemical Engineering Research and Design
Chemical Engineering Research and Design, Elsevier, 2016, 109, pp.686-697. ⟨10.1016/j.cherd.2016.03.017⟩

Stainless steel open-cell solid foams of various linear pore densities (20, 40, 60 PPI) are wash-coated with a commercial catalyst and are evaluated as internals for G-L-S reactions in co-current up-flow configuration. Hydrodynamics parameters such a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4dcd83f685c268db0627c412e85fd5c
https://doi.org/10.1016/j.cherd.2016.03.017

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Hydrodynamic and mass transfer efficiency of ceramic foam packing applied to distillation

Autor: Michel Meyer, David Rouzineau, Michel Prevost, Julien Lévêque

Publikováno v: Chemical Engineering Science.

In addition to a high void volume and specific area, solid foams possess other properties (low density, good thermal, mechanical, electrical, and acoustical behaviour) that make them attractive for applications such as heat exchangers and reformers.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0a04e624e36540d171d3467e6bda0cb
https://oatao.univ-toulouse.fr/5927/

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Hydrodynamic behaviour and mass transfer performance of SiC foam

Autor: Julien Lévêque, Michel Prevost, Michel Meyer, David Rouzineau

This work presents an experimental study of hydrodynamic behaviour and mass transfer performance of ceramic foam (SiC) as column packing. Foam studied is open celled from Sicat Company, their manufacturing method, which is well controlled, allows mod

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7ebaf0281e41201401c20b29b6ab837
https://oatao.univ-toulouse.fr/2969/

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Les contributions publiques au financement des systèmes ferroviaires en France et en Allemagne

Autor: Sylvain Séguret, Julien Lévêque

Publikováno v: Transports
Transports, Editions techniques et économiques, 2007, pp. 223-231

Public Contributions financing Rail Systems of France and Germany. - Network management and decisions regarding the allocation of financial resources are connected closely in the railway industry. The present paper explains different choices that Fra

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::c04337d51bdea3500a60d871283fd3fb
https://halshs.archives-ouvertes.fr/halshs-00179607/file/Comparaison_France-Allemagne_-_S.Seguret_J.Leveque_-_Transports_2007_.pdf

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Allotissement et rendements d'échelle : application aux réseaux de transport ferroviaire

Autor: Julien Lévêque

Publikováno v: Economie et Prévision
ATEC, ITS France. congrès international Continuité, intéropérabilité et qualité des réseaux et services de transport : Satisfaire les attentes des usagers, 1er-2 février 2006, Palais des Arts et Congrès d'Issy Les Moulineaux, Paris
Economie et Prévision, Minefi-Direction de la prévision, 2007, pp. 147-159

This paper analyzes the scope for the awarding of contracts to multiple bidders in regional railway networks. We estimate economies of scale at a disaggregated level, the only one now relevant for analyzing European railway markets. Our results show

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e60b57312a4386437b73b68291dab432
https://halshs.archives-ouvertes.fr/halshs-00280396/document

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De la régionalisation à la concurrence régulée. Analyse économique et juridique de la future organisation du transport ferroviaire régional de voyageurs

Autor: Julien Lévêque, Laure Gauthier-Lescop

Publikováno v: Politiques et Management public
Politiques et management public
Politiques et Management public, Institut de management public, 2006, 24 (1), pp. 1-28

This paper deals with the introduction of competition for the market in French regional passenger railways. Following a double approach through economics and law, it discusses the proposals for a European regulation on public passenger transport serv

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd499b8c1652b942ead64c3e30bb29f8
https://halshs.archives-ouvertes.fr/halshs-00091980

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Réduire le poids des contraintes informationnelle, politique et sociale grâce à la concurrence par comparaison : Le cas des trains régionaux de la SNCF

Autor: Julien Lévêque

Publikováno v: Revue d'économie industrielle
Revue d'économie industrielle, Éd. techniques et économiques ; De Boeck Université, 2005, pp. 57-78

This paper discusses the interest to introduce yardstick competition to improve regional rail regulation. After reminding informational benefits and theoretical limits of yardstick competition, the main practical applications of comparison mechanisms

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd67f46ca1f5967ff7d6e7408b77e994
https://shs.hal.science/halshs-00091593

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Négocier les prochaines conventions TER à l’aide de comparaisons interrégionales

Autor: Julien Lévêque

Publikováno v: Transports urbains. :18

La premiere generation de conventions TER post-loi SRU arrive actuellement a son terme, avec une premiere serie d'echeances en 2007. Les negociations qui vont prochainement s'engager seront l'occasion de corriger certains defauts des conventions init

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::33110b96f0c2f307018a39e7e841f7d8
https://doi.org/10.3917/turb.108.0018

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