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See detailApport pour le restaurateur des ouvrages anciens traitant d'architecture
Gilles, Isabelle ULg

in Art&Fact (2008), 27

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See detailFoucault lecteur de Husserl : articuler une rencontre
Bolmain, Thomas ULg

in Bulletin d'Analyse Phénoménologique (2008), 4(3), 202-238

Cet article trace une voie de recherche au sein de l’histoire de la philosophie continentale : il entend revenir sur le partage théorie/pratique à partir d’une confrontation entre l’œuvre de Foucault et ... [more ▼]

Cet article trace une voie de recherche au sein de l’histoire de la philosophie continentale : il entend revenir sur le partage théorie/pratique à partir d’une confrontation entre l’œuvre de Foucault et un ensemble de textes tardifs de Husserl. Dans ce dessein, il place l’accent sur la dimension « ascétique », puis pratique, de la phénoménologie husserlienne (à travers les notions de conversion, d’(auto)méditation, de vie philosophique, enfin de critique historique de nous-mêmes) de façon à nuancer l’image convenue d’une pensée husserlienne strictement intellectualiste. En effet, bien qu’elle culmine dans la réactivation d’une attitude théorétique originaire, il reste : que cette attitude est elle-même fondée par une pratique de soi, dans la pensée ; qu’elle se prolonge en « une nouvelle espèce de pratique », historique, où le sens de l’humanité est pris en charge. Il montre en conclusion qu’au regard d’une ontologie critique de nous-mêmes, ces auteurs couvrent deux régions différentes et contraires, comme en témoigne le rapport divergent qu’ils entretiennent à la question de l’origine, à celle du sujet, enfin au concept d’expérience. [less ▲]

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See detailBiochemical and Physiological Responses in Two Vigna unguiculata (L.) Walp. Cultivars Under Water Stress
Costa, RCL; Lobato, AKS; Oliveira Neto, CF et al

in Journal of Agronomy (2008), 7(1), 98-101

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See detailLa production de charbon de bois à Madagascar : amélioration technique et économique
Burny, Philippe ULg; Montagne, Pierre; Crehay, Romain et al

in Petrescu-Mag, Ruxandra Malina; Burny, Philippe (Eds.) Environmental policies and legislation (2008)

En Madagascar, vu les conditions économiques et environnementales, le charbon de bois constitue la principale source d'énergie pour les ménages, tant urbains que ruraux, surtout les plus pauvres. Le ... [more ▼]

En Madagascar, vu les conditions économiques et environnementales, le charbon de bois constitue la principale source d'énergie pour les ménages, tant urbains que ruraux, surtout les plus pauvres. Le charbon de bois joue un rôle économique et social très important et est donc politiquement sensible. Le projet CARAMCODEC (CARbonisation AMéliorée et COntrôle DECentralisé à Madagascar) s'est déroulé dans le Nord-Ouest de Madagascar, et plus précisément dans la région de Boeny, dont la capitale est Mahajanga. Le projet CARAMCODEC a obtenu le soutien financier de l'Union européenne pour la période 2006-2008. Les objectifs du projet CARAMCODEC ont été définis comme suit : a) au niveau régional : lutter contre la pauvreté en milieu rural ; assurer l'approvisionnement de la population urbaine avec le charbon de bois de la production à la consommation. b) Au niveau national : améliorer les politiques énergétique et forestière dans le but d'encourager la gestion durable des ressources naturelles pour la production de bois comme source d'énergie ; construire les conditions nécessaires à la définition d'une stratégie pour l'énergie domestique. [less ▲]

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See detailEtude de l'écologie des communautés macrophytiques en vue de fournir des indicateurs paléo-environnementaux pour les lacs-cratères d'Afrique de l'Est
Lebrun, Julie ULg; Mahy, Grégory ULg

in Anne Bonis (Ed.) Actualité de la recherche en écologie des communautés végétales. Actes du quatrième Colloque ECOVEG: Rennes, 12-14 mars 2008 (2008)

This research is part of an integrated paleoecological project which aims at coupling reconstructions of past vegetation and water-quality changes with climate variability. Crater-lakes from East Africa ... [more ▼]

This research is part of an integrated paleoecological project which aims at coupling reconstructions of past vegetation and water-quality changes with climate variability. Crater-lakes from East Africa are favourable to the conservation of proxy indicators such as plant macrofossils used to reconstruct the lake ecosystem. The study of modern macrophytic communities in relationship with present environmental parameters was the first step of this research. Eventually, it will allow us to select species with high proxy-indicator value. Phytosociologic and environmental data were collected in 18 crater-lakes in South-western Uganda. In each relevé, species abundance and habitat conditions were described. Environmental parameters were used to develop a lake typology. A cluster analysis identified 6 aquatic and semi-aquatic communities and the indicator species were highlighted. The CA ordination emphasized the importance of geography, physico-chemistry and trophic level in the community structure. Temperature, pH, sediment type, depth and slope were the most correlated parameters to floristic variation in the CCA ordination. These preliminary results give some trends about the ecology of macrophytes communities. A complete dataset and the study of species ecological range will allow us to go further in the ecological significations of macrofossils. [less ▲]

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See detailPCDD, PCDF AND PCB DETERMINATION IN DOLPHINS REVEALS A WORLD HOTSPOT FOR PCBS IN GUANABARA BAY, BRAZIL
Dorneles, Paulo; Lailson-Brito, José; Eppe, Gauthier ULg et al

in Organohalogen Compounds (2008), 70

The main objective of the present study was to determine the current concentrations of PCDDs, PCDFs and PCBs in dolphins from a region of high industrialization and urbanization in the Southern Hemisphere ... [more ▼]

The main objective of the present study was to determine the current concentrations of PCDDs, PCDFs and PCBs in dolphins from a region of high industrialization and urbanization in the Southern Hemisphere. Since most of these compounds biomagnify in food chains and changes in ratios of stable isotopes of nitrogen (15N/14N) have been used to elucidate trophic relationships 7, measurements of these isotopes have been carried out in marine tucuxi dolphins and their prey in Guanabara Bay. Stable isotopes were measured, firstly, to quantitatively assess the trophic level of the dolphin, and, secondly, to provide information for future human risk assessment investigations related to fish consumption [less ▲]

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See detailÉtude d’un séchoir solaire fonctionnant en mode direct et indirect
Chalal, Nadia; belhamri, Azeddine; Bennamoun, Lyes ULg

in Revue des Energies Renouvelables (2008)

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See detailTemps de travail et horaires atypiques : Impact sur le conflit travail-famille et le bien-être.
Hansez, Isabelle ULg; Etienne, Anne-Marie ULg; Breuer, Lara

in Balikdjiian, A.; Salengros, P.; Lemoine, C. (Eds.) et al Analyse du travail, technologie et psychologie de la consommation. Actes du 14ème congrès de Psychologie du Travail et des Organisations de Langue Française. (2008)

L’étude présentée propose d’examiner, parmi 184 travailleurs luxembourgeois, le lien entre le temps de travail, y compris les horaires atypiques, l’interaction vie privée-vie professionnelle et le bien ... [more ▼]

L’étude présentée propose d’examiner, parmi 184 travailleurs luxembourgeois, le lien entre le temps de travail, y compris les horaires atypiques, l’interaction vie privée-vie professionnelle et le bien-être au travail. Les résultats principaux relèvent un effet significatif (négatif) du travail de week-end, du travail de nuit et des horaires compressés sur l’influence négative travail-famille. Un effet significatif (négatif) de l’horaire compressé sur l’influence positive travail-famille est aussi mis en évidence. Enfin, le temps partiel serait lié à un niveau de stress plus faible et une influence négative du travail sur la famille plus faible. Cette dernière jouerait par ailleurs un rôle de modérateur partiel entre le temps de travail et le stress négatif. [less ▲]

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See detailUnprotected Composite Frames with CHS Columns. Performance under Fire Loadings
Alderighi, Elisabetta; Franssen, Jean-Marc ULg; Salvatore, W.

in Ofner (Ed.) Proceedings of the 5th European Conference on Steel and Composite Structures (2008)

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See detailNumerical modelling of thin-walled stainless steel structural elements in case of fire
Lopes, N.; Vila Real, P.; Simoes da Silva, L. et al

in Kodur; Tan (Eds.) Proceedings of the Fifth International Conference Structures in Fire (2008)

In this paper, numerical tests made in stainless steel thin-walled elements, using the program SAFIR, will be presented. In order to make these simulations, two main changes in SAFIR were made: i) the ... [more ▼]

In this paper, numerical tests made in stainless steel thin-walled elements, using the program SAFIR, will be presented. In order to make these simulations, two main changes in SAFIR were made: i) the program was changed in order to deal with the stainless steel 2D material properties to be used with shell elements and ii) the possibility of the program to take into account residual stresses in shell elements was introduced. The stainless steel stress-strain relationship at high temperatures, was based on the one presented in part 1.2 of Eurocode 3 [1], which has no initial linear branch as the case of carbon steel. The hardening rule to be used on the shell element formulation could not be exactly established without an approximation of the Eurocode 3 constitutive law [1]. Due to the fact that the SAFIR procedure to take into account the residual stresses consists in transforming them first into residual strains and adding them after to the other initial strains [2], it was necessary to implement a procedure that took in consideration the nonlinearity of the material stress-strain relationship. The paper shows the influence of the residual stresses on the ultimate load bearing resistance of thin-walled stainless steel structural elements in case of fire. [less ▲]

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See detailFlexural Buckling of Axially Loaded Ferritic Stainless Steel Columns in case of Fire
Lopes, N.; Vila Real P.M.M.; Simoes da Silva, L. et al

in Ofner (Ed.) Proceedings of the 5th European Conference on Steel and Composite Structures (EUROSTEEL 2008) (2008)

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See detailConsideration of nonlinear creep strain of siliceous concrete on calculation of mechanical strain under transient temperatures as a function of load history
Schneider, U.; Schneider, M.; Franssen, Jean-Marc ULg

in Kodur, Venkatesh; Tan, Kang Hai (Eds.) Proceedings of the Fifth International Conference Structures in Fire (2008)

The paper is given of an extended model for concrete in compression at elevated temperature that incorporates elastic, plastic and creep strain as a function of temperature and stress history. The ... [more ▼]

The paper is given of an extended model for concrete in compression at elevated temperature that incorporates elastic, plastic and creep strain as a function of temperature and stress history. The mechanical strain calculated as a function of elastic strain, plastic strain and thermal induced strain. The thermal induced strain is relative independent compared to dependence of Young’s Modulus by load history. Actually the term comprises elastic, plastic and (pure) transient creep strains as we will show. A comparison is given between experimental results with cylindrical specimens and calculated results. [less ▲]

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See detailStructural member behaviour and analysis in case of fire
Lopes, N.; Vila Real, P.; Uppfeldt, B. et al

in Mazzolani, Federico (Ed.) Proceedings of Urban Habitat Constructions under Catastrophic Events (COST Action C26) (2008)

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See detailAssessment of Eurocode 5 charring rate calculation methods
Cachim, Paulo; Franssen, Jean-Marc ULg

in Proceedings of the Fifth International Conference Structures in Fire (2008)

The basic hypothesis for the assessment of fire resistance of wood structures is that for temperatures above 300 ºC, wood is no longer able to sustain any load. Consequently, the determination of the ... [more ▼]

The basic hypothesis for the assessment of fire resistance of wood structures is that for temperatures above 300 ºC, wood is no longer able to sustain any load. Consequently, the determination of the location of the 300 ºC isotherm, the charring depth, is decisive for the result of fire resistance calculation methods. Charring rate of wood is dependent of numerous factors, such as wood species (density, permeability or composition), moisture or direction of burning (along or across the grain). Eurocode 5, Part 1-2, presents several methods for the calculation of fire resistance of timber structures that are divided into simplified and advanced. In this paper simplified and advanced methods are compared regarding the calculation of the charring depth. Finite element simulations have been performed, using the proposed wood properties of Eurocode 5 using finite element code SAFIR. The influence of parameters such as wood density, moisture or anisotropy has been investigated. The results obtained with finite element calculations were then compared with Eurocode 5 simplified models. Some inconsistencies between methods have been observed. This paper presents proposals to overcome some of the inconsistencies as well as to extend the applicability of the models. [less ▲]

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See detailDuplex stainless steel columns and beam-columns in case of fire
Lopes, N.; Vila Real, P. M. M.; Simoes da Silva, L. et al

in Kodur, Venkatesh; Tan, Kang Hai (Eds.) Proceedings of the Fifth International Conference Structures in Fire (2008)

It is the purpose of this paper to evaluate the accuracy and safety of the currently prescribed design rules in Eurocode 3: Part 1.2 for the evaluation of the resistance of duplex stainless steel columns ... [more ▼]

It is the purpose of this paper to evaluate the accuracy and safety of the currently prescribed design rules in Eurocode 3: Part 1.2 for the evaluation of the resistance of duplex stainless steel columns and beam-columns. This evaluation is carried out by performing numerical simulations on Class1 and Class 2 stainless steel H-columns. These numerical simulations are performed using the program SAFIR. Eurocode 3 states that stainless steel structural members, subjected to high temperatures, must be designed with the same formulae used for carbon steel members. However, as these two materials have different constitutive laws, it should be expected that, different formulae for the calculation of member stability should be used for fire design. It is considered buckling in the two main cross-section axis, and, in the case of the beam-columns, different bending moment diagrams. Parametric studies of the behaviour of the duplex EN 1.4462 stainless steel grade (austenitic-ferritic in Eurocode 3) columns and beam-columns subjected to fire are presented. [less ▲]

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See detailComparison between EC3 and the original proposal for Beam-Columns in Case of Fire
Talamona, D.; Lopes, N.; Vila Real, P. et al

in Ofner (Ed.) Proceedings of the 5th European Conference on Steel and Composite Structures (EUROSTEEL 2008) (2008)

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See detailGlobal modelling of structures in fire
Gillie, M.; Burgess, I.; Franssen, Jean-Marc ULg et al

in Mazzolani, Federico (Ed.) Proceedings of Urban Habitat Constructions under Catastrophic Events (COST Action C26) (2008)

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See detailOverview of fire design
Franssen, Jean-Marc ULg; Wald, F.; Burgess, I. et al

in Mazzolani, Federico (Ed.) Proceedings of Urban Habitat Constructions under Catastrophic Events (COST Action C26) (2008)

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