References of "Scientific congresses and symposiums"
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See detailPrediction of deformation textures in zirconium based on a simplified modelling of grain interaction
Lelotte, Thomas; Delannay, L.; Habraken, Anne ULg

in Khan, A. S. (Ed.) Proceedings of the Plasticity Conference 2006 (2006)

The goal of this study is to apply a “multisite” crystal plasticity model to the prediction of texture evolution in zirconium deformed at high temperature. The model under consideration is an extension of ... [more ▼]

The goal of this study is to apply a “multisite” crystal plasticity model to the prediction of texture evolution in zirconium deformed at high temperature. The model under consideration is an extension of the elastic-viscoplastic “multisite model” proposed by Delannay et al. [2005] which has been adapted to account for a new type of grain interaction (Van Houtte et al. [2005]). Predictions of the model are compared to experimental data. Two forming processes are considered: sheet rolling (Lebensohn et al. [1994]) and the torsion of a cylindrical bar (Sanchez et al. [2001]). [less ▲]

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See detailPractical use of dissipative connections in high rise frames with concentric bracings
Degée, Hervé ULg; Plumier, André ULg; Doneux, C. L.

in Proceedings of the ICMS Conference (2006)

A quantitative comparison of two 15 storey high framesdesigned to resist a 0.4g PGAhas been made: one frame corresponds to a standard design in which connections of diagonals are capacity designed to the ... [more ▼]

A quantitative comparison of two 15 storey high framesdesigned to resist a 0.4g PGAhas been made: one frame corresponds to a standard design in which connections of diagonals are capacity designed to the diagonal sections and the other one uses dissipative connections at the diagonals ends. The structures are designed by a standard elastic procedure under reduced forces. Pushover analysis and non linear dynamic analyses are then performed to assess the real behavior and performance of the structures. The advantages of using dissipative connections are confirmed in a high rise flexible building. [less ▲]

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See detailRoutes to increase the relaxivity of contrast agents for MRI
Thonon, David ULg; Vanasschen, Christian; Paris, Jérôme et al

Poster (2006)

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See detailApplication of magnetic susceptibility on different carbonate platform type
Da Silva, Anne-Christine ULg; Boulvain, Frédéric ULg; Mabille, Cédric ULg

in Abstract book 17th ISC - Fukuoka, Japan - 2006 (2006)

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See detailIdentification of hardening behavior using inverse modeling and image correlation
Lecompte, D.; Cooreman, S.; Sol, H. et al

in Proceedings of the SEM annual conference and exposition 2006 (2006)

The basic principle of an inverse modeling procedure as it is used for parameter identification, is the generation of a complex and heterogeneous deformation field that contains as much information as ... [more ▼]

The basic principle of an inverse modeling procedure as it is used for parameter identification, is the generation of a complex and heterogeneous deformation field that contains as much information as possible about the parameters to be identified. One way of obtaining such a non-homogeneous deformation is by making the geometry of the specimen less regular. Another possibility is to make the loading conditions more complex. In this paper both options are actually combined by using a biaxial tensile test on a cruciform specimen in order to identify the parameters of a Swift isotropic hardening law. The yield criterion is modeled by the isotropic Von Mises criterion. The optimization technique used is a constrained gradient based Newton-type routine, which means that in every iteration step, a sensitivity calculation has to be performed in order to indicate the direction in which the parameters are to be optimized. The functional to be minimized is a least-squares expression of the discrepancy between the measured and the simulated strain fields at a certain load. The numerical routines as well as the identification results, based on simulated strain fields, are discussed. [less ▲]

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See detailScreening cardiovascular risk factors in general population remains a useful tool
Saint-Remy, Annie ULg; Krzesinski, Jean-Marie ULg

in Kidney & Blood Pressure Research (2006), (29), 248

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See detailAnalysis of candiate genes for prolificacy in two commercial sow populations
Buske, Bernd ULg; Sternstein, Ina; Brockmann, Gudrun

Poster (2006)

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See detailOne-year follow-up of ankle-brachial blood pressure index in hemodialysis patients
Saint-Remy, Annie ULg; Sumaili, E.; Krzesinski, Jean-Marie ULg

in Kidney & Blood Pressure Research (2006), 29

Baseline Ankle-Brachial Blood Pressure Index (ABI base) was measured in 85 chronic hemodialysis (HD) patients in 2005, giving a 41% prevalence of peripheral arterial disease (ABI < 0.9). The index was ... [more ▼]

Baseline Ankle-Brachial Blood Pressure Index (ABI base) was measured in 85 chronic hemodialysis (HD) patients in 2005, giving a 41% prevalence of peripheral arterial disease (ABI < 0.9). The index was measured 1 year later (ABI 1 year) in 69 BD for whom both screening values were available. The evolution of ABI, 1 year apart, was analyzed in relation to major other cardiovascular (CV) risk factors such as hypertension (lIT), pulse pressure (PP), pulse wave velocity (PWV), phosphocalcic metabolism, and lipids. [less ▲]

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See detailContributions possibles des innovations genetiques pour l'amelioration de la competitivite des filieres cotonnieres africaines.
Mergeai, Guy ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2006), 10(4), 345-350

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See detailSegmentation, registration, tracking ...
Verly, Jacques ULg

Conference (2006)

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See detailLes nouvelles orientations de l’enseignement de l’histoire à l’école secondaire en Communauté française de Belgique
Jadoulle, Jean-Louis ULg

in B. CAULIER & L. COURTOIS (Ed.) Québec-Wallonie. Dynamique des espaces et expériences francophones (2006)

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See detailInternal control of the magnetospheric processes at Jupiter and Saturn
Radioti, Aikaterini ULg; Krupp, N.; Woch, J. et al

Conference (2006)

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See detailA scale transition procedure for flexural effects
Mercatoris, Benoît ULg; Massart, Thierry J.

in 7th National Congress on Theoretical and Applied Mechanics (NCTAM2006) (2006)

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See detailGuide technique parasismique belge - Fondements théoriques et expérimentaux
Degée, Hervé ULg; Plumier, André ULg

in Actes du Colloque "Evaluation et prévention du risque sismique en Région Wallonne" (2006)

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See detailEvolution des échouages et des causes de mortalité des mammifères marins dans le nord de la France (1995-2005)
Jauniaux, Thierry ULg; Brenez, C.; Haelters, J. et al

in annual proceeding (2006)

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See detailResults of crossbreeding between Belgian Texel and Maroccan local breeds of sheep. Carcass characteristics and meat compositon
EL Fadili, M.; Leroy, Pascal ULg

in Book of Abstracts of the 57th Annual Meeting of the European Association for Animal Production (2006)

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See detailEstimation of fatty acid profile in cow milk by mid-infrared spectrometry
Soyeurt, Hélène ULg; Dardenne, Pierre; Lognay, Georges ULg et al

in European seminar on infrared spectroscopy (2006)

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See detailGrowth and carcass performances of Belgian Blue x Nelore and Bradford cattle in Bahia state Brazil
Leroy, Pascal ULg; Leroy, Emile ULg; Cassart, Renaud ULg

in World Congress on Genetics Applied to Livestock Production. Belo Horizonte, Brasil (2006)

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See detailStudies on the infectivity and pathogenicity of new Peach Latent Mosaic viroid (PLMVd) variants
Fekih Hassen, I.; Parisi, Olivier ULg; Fakhfakh, H. et al

Poster (2006)

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See detailLes Élements espagnols de Jules Herbillon dans les notices étymologiques du TLF
Baiwir, Esther ULg

in Buchi, Eva (Ed.) Actes de la journée d'étude "Lexicographie historique française : autour de la mise à jour des notices étymologiques du Trésor de la langue française informatisé» (Nancy/ATILF, 4 novembre 2005) (2006)

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See detailComparison of the current techniques used for the denoising of scintigraphic images
Kirkove, Murielle ULg; Seret, Alain ULg

in European Journal of Nuclear Medicine and Molecular Imaging (2006), 33(S2), 318

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See detailTranscriptional regulation of the mouse doublecortin gene in differentiating neurons
Plumier, Jean-Christophe ULg; Muller, Marc ULg; Rogister, Bernard ULg et al

in International Journal of Developmental Neuroscience (2006), 24

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See detailPalyWeb
Steemans, Philippe ULg; Breuer, P.

Conference (2006)

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See detailForecasting Septoria tritici on winter wheat in the Grand-Duchy of Luxembourg from 2000 to 2005.
El Jarroudi, Moussa ULg; Tychon, Bernard ULg; Maraite, H. et al

in Bibliotheca Fragmenta Agronomica - Book of Proceedings (2006), 11(2), 751-752

This papers presents the results of a wheat diseases model called PROCULTURE for the prediction of septoriosis in the Grand Duchy of Luxembourg

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See detailXFEM-based modeling of successive resections for preoperative image updating
Vigneron, Lara M.; Robe, Pierre A.; Warfield, Simon K. et al

Conference (2006)

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See detailSimple heuristic model of an aerosol filter
Lecocq, Rapahaël; Calvo, Sébastien ULg; Saroha, Anil et al

Poster (2006)

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See detailConservation des ressources génétiques animales en Région wallonne: le paradoxe de l'hyperspécialisation
Daniaux, Christel ULg; Stassart, Pierre M ULg; Massart, Serges et al

in 13éme journées "3R" Proceeding (2006)

The main breed of the waloon regio are adapted to conditions of intensive production with extrem phenotypic experssion.

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See detailAnalysis of speckle patterns for deformation measurements by DIC
Lecompte, David; Sol, H.; Vantomme, J. et al

in Slangen, Pierre; Cerruti, Christine (Eds.) Proceedings of SPIE Vol. 6341 (2006)

Digital Image Correlation (DIC) – also referred to as white light speckle technique – is an optical-numerical full-field measuring technique, which offers the possibility to determine in-plane ... [more ▼]

Digital Image Correlation (DIC) – also referred to as white light speckle technique – is an optical-numerical full-field measuring technique, which offers the possibility to determine in-plane displacement fields at the surface of objects under any kind of loading. For an optimal use of the method, the object of interest has to be covered with a speckle pattern. The present paper studies the efficiency of a random speckle pattern and its influence on the measured in-plane displacements with respect to the subset size. First a randomly sprayed speckle pattern is photographed three times. Each picture is taken with a different zoom, yielding three speckle patterns, which are different by the size of the speckles. Secondly a number of speckle patterns are generated numerically using a given speckle size and image coverage. Subsequently, each speckle pattern image undergoes a numerically controlled deformation, which is measured with digital image correlation software. Both imposed and measured displacements are compared and it is shown that the size of the speckles combined with the size of the used pixel subset, clearly influences the accuracy of the measured displacements. Furthermore it is shown that it is possible to create an optimal speckle pattern when a given subset size is chosen. [less ▲]

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See detail3D real-time auralization with separate rendering of direct sound, reflections and directional late reverberation
Lesoinne, Stéphane ULg; Werner, Nicolas; Embrechts, Jean-Jacques ULg

in Proceedings of the 2006 international Conference on Auditory Display (2006)

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See detailThe use of various gas chromatography and mass spectrometry techniques for human biomonitoring studies
Patterson, Donald G.; Welch, S. M.; Focant, Jean-François ULg et al

in Organohalogen Compounds (2006), 68

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See detailEVALUATION OF NOVEL SYNTHETIC POLYCATION ACTION ON VISCOELASTIC PROPERTIES OF ERYTHROCYTE MEMBRANE
Riquelme, B; Foresto, P; Relancio, F et al

in Annales AFA (2006)

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See detailLe système anglais présagerait-il de l'avenir en matière de qualité de l'enseignement universitaire en Communauté française de Belgique ?
Vandeweerd, Jean-Michel ULg; Mignon, Jacques ULg; Reggers, Thérèse ULg

in Actes du 22e congrès de l’Association internationale de pédagogie universitaire (AIPU) (2006)

Issues du monde industriel, les démarches d'amélioration de la qualité se sont rapidement étendues aux autres secteurs. Elles faisaient cependant défaut au niveau de l'enseignement supérieur en Communauté ... [more ▼]

Issues du monde industriel, les démarches d'amélioration de la qualité se sont rapidement étendues aux autres secteurs. Elles faisaient cependant défaut au niveau de l'enseignement supérieur en Communauté française de Belgique. Comblant cette lacune, celle-ci vient de se doter d'un outil de gestion de la qualité de son enseignement. L’Agence d’Evaluation de la Qualité de l'Enseignement Supérieur (AEQES) a été constituée au premier janvier 2003. La première réunion s'est tenue un an plus tard (23 janvier 2004). Elle doit permettre de répondre aux recommandations européennes déjà arrêtées en la matière, d’assurer la représentation de la Communauté française de Belgique dans les instances concernées, mais surtout de doter cette communauté d'une structure organisant l'évaluation de la qualité de l'enseignement au sein des établissements. Dans ce contexte, il est peu probable d’échapper à un courant d’inspiration anglo-saxonne en matière de qualité de l’enseignement supérieur dans lequel le processus qualité est considéré comme un ROI (Return On Investment) ou un processus d'amélioration continue dépendant des moyens (humains, technologiques, financiers, …) qui lui sont consacrés. Le cas qui suit concerne le travail de réflexion d’une trentaine de professionnels autour de la démarche qualité dans l’enseignement supérieur en Communauté française de Belgique. [less ▲]

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See detailA new spatial thin-walled beam finite element for tapered members
Boissonnade, N.; Degée, Hervé ULg

in Proceedings of the National Conference on Theoretical and Applied Mechanics (2006)

This paper presents the essentials of an original geometrically and materially non-linear 3-D tapered beam finite element. The theoretical bases of the element are described, with particular attention ... [more ▼]

This paper presents the essentials of an original geometrically and materially non-linear 3-D tapered beam finite element. The theoretical bases of the element are described, with particular attention paid to the choice of an appropriate displacement field and to the corresponding non-linear axial strains. Specific numerical problems met in the development of the finite element are examined, concerning mainly shear and membrane locking and the handling of rigid body motions. Worked examples on isolated members are presented for various types of analyses: elastic linear, elastic critical and geometrically and materially non-linear analyses. Good accuracy with reference to numerical results is shown, as well as good convergence properties. It is also demonstrated – analytically and numerically – that the use of prismatic beam finite elements for the analysis of tapered beams (segmentation technique) may lead to significant discrepancies when the behaviour is influenced by torsional aspects. [less ▲]

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See detailLe sujet de l'histoire
Denis, Benoît ULg

in Durand, Pascal (Ed.) L'écrivain et son double. Hubert Nyssen (2006)

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See detailImprovement of Pull-in Voltage of Electromechanical Microbeams Using Topology Optimization
Lemaire, Etienne ULg; Duysinx, Pierre ULg; Rochus, Véronique ULg et al

in 3rd European Conference on Computational Mechanics (ECCM) (2006)

The present work is dedicated to the application of topology optimization in the coupled simulation of multiphysic field problems as in MEMS. Precisely, it describes how it is possible to maximize pull-in ... [more ▼]

The present work is dedicated to the application of topology optimization in the coupled simulation of multiphysic field problems as in MEMS. Precisely, it describes how it is possible to maximize pull-in voltage of an electromechanical microsystem for which the optimization domain is insulated from the electric field. The electromechanical coupling is modeled by the use of a monolithic analysis. The monolithic modeling combined with a Riks-Crisfield algorithm allows computing accurately the pull-in conditions. The optimization task is completed with the help of a sequential convex linear approximation schemes (CONLIN). [less ▲]

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See detailKnowledge-aided heterogeneity-compensation algorithm for STAP applicable to bistatic configurations and conformal antenna arrays
Ries, Philippe; De Grève, Sébastien; Lapierre, Fabian D. et al

Conference (2006)

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See detailStructure of linkage disequilibrium and length of IBD segments in simulated populations
Ytournel, F.; Gilbert, H.; Druet, Tom ULg et al

in Proceedings of the 8th World Congress on Genetics Applied to Livestock Production (2006)

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See detailStochastic analysis of the effect of spatial variability of diffusion parameters on radionuclide transport in low permeability clay layer
Huysmans, Marijke; Dassargues, Alain ULg

in Calibration and Reliability in Groundwater Modelling: From Uncertainty to Decision Making (2006)

Most studies that incorporate subsurface heterogeneity in groundwater flow and transport models only analyze and simulate the spatial variability of hydraulic conductivity. Heterogeneity of the other flow ... [more ▼]

Most studies that incorporate subsurface heterogeneity in groundwater flow and transport models only analyze and simulate the spatial variability of hydraulic conductivity. Heterogeneity of the other flow and transport parameters is usually neglected. This approach is often justified, but there are however cases in which disregarding the heterogeneity of the other flow and transport parameters can be questionable. In low permeability media, for instance, diffusion is often the dominant transport mechanism. It therefore seems logical to incorporate the spatial variability of the diffusion parameters in the transport model. This study therefore analyzes and simulates the spatial variability of the effective diffusion coefficient and the diffusion accessible porosity with geostatistical techniques and incorporates their heterogeneity in the transport model of a low permeability formation. The calculated output radionuclide fluxes of this model are compared with the fluxes calculated with a homogeneous model and a model with a heterogeneous hydraulic conductivity distribution. This analysis shows that the heterogeneity of the diffusion parameters has a much larger effect on the calculated output radionuclide fluxes than the heterogeneity of hydraulic conductivity. [less ▲]

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See detailThe power of hybrid acceleration
Boigelot, Bernard ULg; Herbreteau, Frédéric

in Lecture Notes in Computer Science (2006), 4144

This paper addresses the problem of computing symbolically the set of reachable configurations of a linear hybrid automaton. A solution proposed in earlier work consists in exploring the reachable ... [more ▼]

This paper addresses the problem of computing symbolically the set of reachable configurations of a linear hybrid automaton. A solution proposed in earlier work consists in exploring the reachable configurations using an acceleration operator for computing the iterated effect of selected control cycles. Unfortunately, this method imposes a periodicity requirement on the data transformations labeling these cycles, that is not always satisfied in practice. This happens in particular with the important subclass of timed automata, even though it is known that the paths of such automata have a periodic behavior. The goal of this paper is to broaden substantially the applicability of hybrid acceleration. This is done by introducing powerful reduction rules, aimed at translating hybrid data transformations into equivalent ones that satisfy the periodicity criterion. In particular, we show that these rules always succeed in the case of timed automata. This makes it possible to compute an exact symbolic representation of the set of reachable configurations of a linear hybrid automaton, with a guarantee of termination over the subclass of timed automata. Compared to other known solutions to this problem, our method is simpler, and applicable to a much larger class of systems. [less ▲]

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See detailFundamentals and biotechnological aspects of cold-adapted enzymes
Gerday, Charles ULg; Collins, Tony; D'Amico, Salvino et al

Conference (2006)

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See detailCharacterisation of the magnetic shielding properties of YBaCuO thick films prepared by electrophoretic deposition on silver substrates
Denis, Samuel; Grenci, G.; Dusoulier, Laurent et al

in Journal of Physics: Conference Series (2006), 43

This communication reports experimental results on the superconducting properties of YBaCuO thick films prepared by electrophoretic deposition on silver substrates. The magnetic shielding properties of ... [more ▼]

This communication reports experimental results on the superconducting properties of YBaCuO thick films prepared by electrophoretic deposition on silver substrates. The magnetic shielding properties of the coatings were characterised by various methods. First, the electrical resistance and the transport critical current density, Jc, were determined. Our coatings exhibit a superconducting transition at a temperature of 90 K. Next, shielding characterisations were carried out at 77 K for samples having either a slab or a cylindrical geometry. In both cases, the frequency of the applied magnetic field was 103 Hz; the field behind the shielding wall was measured by a pick-up coil connected to a lock-in amplifier. In the case of cylindrical samples and for an applied induction lower than 1 G, the field inside the shielding enclosure is reduced by a factor greater than 106 (i.e. 120 dB) with respect to the applied field. [less ▲]

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See detailA simplified method to account for the non linearity of aerodynamic coefficients in the analysis of wind-loaded bridges
Denoël, Vincent ULg; Degée, Hervé ULg

in Proceedings of the 7th National Congres on Theoretical and Applied Mechanics (2006)

Based on a non linear quasi-steady wind model, this paper presents the statistical characteristics of the wind loading. These statistical characteristics are computed in an analysical way and validated ... [more ▼]

Based on a non linear quasi-steady wind model, this paper presents the statistical characteristics of the wind loading. These statistical characteristics are computed in an analysical way and validated thanks to a Monte Carlo simulation.After this validation, a parametric study allows giving some general observations concerning the non Gaussianity of the loading. Statistical moments up to the fourth order are computed in an analytical way. The subsequent relations are expressed as a function of the slope and curvature of the aerodynamic coefficients. They are a usefull tool for the assessment of the non Gaussianity of the wind loading on any bridge deck. This is illustrated for three famous European bridges. [less ▲]

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See detailPlasma cystatin C for the detection of renal failure in obese patients
Delanaye, Pierre ULg; Cavalier, Etienne ULg; Radermecker, Régis ULg et al

in Nephrology Dialysis Transplantation (2006), 21(S4), 214

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See detailHydrogeological modeling of radionuclide transport in heterogeneous low-permeability media: a comparison between Boom Clay and Ieper Clay
Huysmans, Marijke; Dassargues, Alain ULg

in Soares, A.; Pereira, M. J.; Dimitrakopoulos, R. (Eds.) GeoENV VI: Geostatistics for Environmental Applications (2006)

Deep low-permeability clay layers are considered as possible suitable environments for disposal of high-level radioactive waste. In Belgium, the Boom Clay is the reference host formation and the Ieper ... [more ▼]

Deep low-permeability clay layers are considered as possible suitable environments for disposal of high-level radioactive waste. In Belgium, the Boom Clay is the reference host formation and the Ieper Clay an alternative host formation for research and safety and feasibility assessment of deep disposal of nuclear waste. In this study, two hydrogeological models are built to calculate the radionuclide fluxes that would migrate from a potential repository through these two clay formations. Transport parameters heterogeneity is incorporated in the models using stochastic sequential simulation of hydraulic conductivity, diffusion coefficient and diffusion accessible porosity, using primary information and several types of secondary information, i.e. resistivity, gamma ray and grain size. The calculated radionuclide fluxes in the two clay formations are compared. Results show that in the Ieper Clay larger differences between the fluxes through the lower and the upper clay boundary occur, larger total output radionuclide amounts are calculated, and a larger effect of parameter heterogeneity on the calculated fluxes is observed, compared to the Boom Clay. [less ▲]

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See detailProfiling food consumption : comparison between USA and EU
Duquesne, Brigitte ULg; Matendo, Sadrac; Lebailly, Philippe ULg

in Competitiveness in Agriculture and the Food Industry: US and EU Perspectives (2006)

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See detailMéthode d'analyse du mouvement de l'épaule par utilisation de nappes
Schwartz, Cédric ULg; Lempereur, Mathieu; Burdin, Valérie et al

Poster (2006)

Nous proposons une méthode permettant d’étudier le mouvement des structures osseuses du complexe de l'épaule (humérus, omoplate, clavicule). Cette méthode est basée sur le suivi de nappes de marqueurs ... [more ▼]

Nous proposons une méthode permettant d’étudier le mouvement des structures osseuses du complexe de l'épaule (humérus, omoplate, clavicule). Cette méthode est basée sur le suivi de nappes de marqueurs plutôt qu'un ensemble de marqueurs individuels à l'aide d'un système de caméras VICON. Le suivi du mouvement des nappes par un algorithme de recalage robuste doit permettre de s'affranchir du mouvement de la peau et avoir accès aux mouvements des structures osseuses sous-jacentes. Cette méthode est comparée à une méthode standard de la littérature. Les résultats montrent que le mouvement de l’omoplate est sous estimé ou sur estimé suivant les axes de rotation. [less ▲]

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See detailCoordinate rotations
Heinesch, Bernard ULg

Conference (2006)

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See detailEtude de l'influence des paramètres de pré-abattage sur le pH des carcasses de porc.
Sindic, Marianne ULg; Mertens, Gilles; Renkens, M. et al

in Viandes et Produits carnés - Hors série (2006)

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See detailDes épithètes exclusives dans la Grèce polythéiste ? L’exemple d’Ourania
Pirenne-Delforge, Vinciane ULg

in Belayche, Nicole; Brulé, Pierre; Freyburger, Gérard (Eds.) et al Nommer les dieux. Théonymes, épithètes, épiclèses dans l’Antiquité (2006)

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See detailEvolution of a dozen non-CO2 greenhouse gases above Central Europe since the mid-1980s.
Zander, Rodolphe ULg; Mahieu, Emmanuel ULg; Demoulin, Philippe ULg et al

in Proceedings of the 4th International Symposium on Non-CO2 Greenhouse Gases (2006)

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See detailDuctility of fully encased composite columns used to obviate soft storey mechanisms in reinforced concrete frames
Degée, Hervé ULg; Doneux, C. L.; Plumier, André ULg

in Mazzolani; Wada (Eds.) Proceedings of the STESSA Conference (2006)

This paper presents a non linear finite element numerical modelling of reinforced concrete and fully encased composite columns. The model is a multi fibres beam with mono-axial non linear material laws ... [more ▼]

This paper presents a non linear finite element numerical modelling of reinforced concrete and fully encased composite columns. The model is a multi fibres beam with mono-axial non linear material laws for concrete, steel and reinforcing steel. The crushing of concrete in compression and the cracking in tension are taken into account. The steel behaviour is elastic-plastic with strain hardening. After calibration against the experimental results, a parametric study is performed. The main objective is to obtain the full moment-rotation behaviour of the columns under different level of axial forces and with different resistance of concrete, and to deduce ductility and rotation capacity of the composite sections. [less ▲]

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See detailPatterns of early eukaryote diversification
Javaux, Emmanuelle ULg

Conference (2006)

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See detailThe "Black Marble" of Denée, a conservation-Lagerstätte from the Lower Viséan of southern Belgium
Mottequin, Bernard ULg

in Kölner Forum für Geologie und Paläontologie (2006), 15

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See detailBronchoprotective effect of inhaled salmeterol, salbutamol and ipratropium bromide using different devices on muscarinic bronchoconstriction in healthy cats
Leemans, Jérôme ULg; Kirschvinck, N.; Bernaerts, F. et al

in Proceedings: 16th Congress European College of Veterinary Internal Medicine – companion animals (2006)

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See detailExperimental investigation on the seismic behaviour of masonry housing in low seismicity areas
Degée, Hervé ULg; Plumier, André ULg

in Proceedings of the 1st European Conference on Earthquake Engineering and Seismology (2006)

This contribution presents the results of an experimental investigation carried out on the shaking table of the National Laboratory of Civil Engineering of Lisbon (LNEC), in order to validate the ... [more ▼]

This contribution presents the results of an experimental investigation carried out on the shaking table of the National Laboratory of Civil Engineering of Lisbon (LNEC), in order to validate the efficiency of some constructive proposals aiming at improving the structural behaviour of non engineered masonry housing subjected to low to moderate seismic action, with rather low costs compared to traditional North-European practice. Two specimens have been tested. These specimens were two full-scale small houses with two levels. The first one was built as a traditional Belgian house, while the second included some anti-seismic technical details. The main conclusions are that both specimens were still standing at the maximum earthquake level foreseen for Belgium, but that the improved model was much less damaged regarding crack openings in the walls. Therefore the economic consequences and repair costs would be much lower with these improvements. However the maximum ground acceleration that can be sustained by the structures seems to be very little influenced by the constructional detailing. [less ▲]

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See detailThe lymphatic ring assay: a new in vitro model of lymphangiogenesis
Bruyère, F; Melen, L; Blacher, Silvia ULg et al

Conference (2006)

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See detailPharmacological effects of tiludronate in horses after immobilisation
Delguste, Catherine ULg; Lepage, Olivier M; Doucet, Michèle et al

Poster (2006)

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See detailDetection of Quantitative Trait Loci for sow reproduction traits using multivariate analyses
Rosendo, A.; Bidanel, J. P.; Druet, Tom ULg et al

in Proceedings of the 8th World Congress on Genetics Applied to Livestock Production (2006)

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See detailExperimental and numerical investigations for I-girders in bending and shear stiffened by closed trapezoidal stiffeners
Boissonnade, N.; Degée, Hervé ULg; Naumes, J. et al

in Proceedings of the ICMS Conference (2006)

The paper investigates the shear resistance of I-girders longitudinally stiffened by closed trape-zoidal stiffeners. It first reports on 4 full-scale tests performed at RWTH Aachen, on stiffened panels ... [more ▼]

The paper investigates the shear resistance of I-girders longitudinally stiffened by closed trape-zoidal stiffeners. It first reports on 4 full-scale tests performed at RWTH Aachen, on stiffened panels with strong closed stiffeners. As expected, failure in the subpanels has been governing. A devoted FEA shell model is then described and validated towards these results and other experimental sources. Parametric stud-ies led with the numerical tool help pointing out several aspects where the Eurocode 3 Part 1.5 recommenda-tions on stiffened panels in bending and shear may be improved. [less ▲]

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See detailRelationship between the progress of the foliar pathogens caused by Septoria tritici and the reduction of the photosynthetic vitality of plants in Grand-Duchy of Luxembourg in 2004.
El Jarroudi, Moussa ULg; Crumière, F.; Hausman, J.-F. et al

in Bibliotheca fragmenta agronomica - Book of proceedings (2006), 11(2), 643-644

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See detailMAXIMIZATION OF PULL-IN VOLTAGE OF MICRO-ELECTROMECHANICAL STRUCTURES USING TOPOLOGY OPTIMIZATION
Lemaire, Etienne ULg; Rochus, Véronique ULg; Fleury, Claude ULg et al

Conference (2006)

The design problem consists in maximizing the pull-in voltage using topology optimization method, which is formulated as an optimal material distribution. In addition to the classical volume constraint ... [more ▼]

The design problem consists in maximizing the pull-in voltage using topology optimization method, which is formulated as an optimal material distribution. In addition to the classical volume constraint, different structural constraints could be taken into consideration. Sensitivity analysis is one of the key issues of the optimization process and is performed with the formulation of eigenvalue topology optimization problems. Here the paper investigates topology optimization of strongly coupled electromechanical systems. To avoid important modifications of the electric field by the optimization process, this first study considers a non design electrode and use topology optimization to design an optimal suspension structure. Solution procedure of the optimization problem is based on CONLIN optimizer using a sequential convex programming. This method that has proved its efficiency in many structural problems (sizing, shape) is here tailored to strongly coupled multiphysics design problems under consideration. The choice of appropriate explicit convex approximations schemes for multiphysic problems is investigated. The proposed method is illustrated and validated on microbeam optimization applications. [less ▲]

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See detailModulation of airway inflammation and pulmonary oxidative markers in cadmium-exposed rats by theophylline and compound UCB-101333-3
Kirschvinck, N.; Fievez, Laurence ULg; Provins, L. et al

in Proceedings: 24th Symposium of the Veterinary Comparative Respiratory Society (2006)

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See detailNeoadjuvant Radiochemotherapy of Locally/Regionally Advanced Rectal Cancer is a standard treatment option
Farkas, Róbert; Al-Farhat, Yousuf; GULYBAN, Akos ULg et al

in Radiotherapy & Oncology (2006), 81(suppl1), 237

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See detailFilière et Transformation des conventions professionnelles
Stassart, Pierre M ULg

Conference (2006)

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See detailIdentification of yield locus parameters of metals using inverse modeling and full field DIC
Lecompte, D.; Cooreman, S.; Sol, H. et al

in Proceedings of the 7th national congress on theoretical and applied mechanics (2006)

The basic principle of the inverse modeling procedure as it is used for parameter identification is the generation of a complex and heterogeneous deformation field that contains as much information as ... [more ▼]

The basic principle of the inverse modeling procedure as it is used for parameter identification is the generation of a complex and heterogeneous deformation field that contains as much information as possible about the parameters to be identified. One way of obtaining such a non-homogeneous deformation is by making the geometry of the specimen less regular. Another possibility is to make the loading conditions more complex. In this paper both options are actually combined by using the concept of a biaxial tensile test on a perforated cruciform specimen. In the present paper, the work hardening of the material is assumed to be isotropic and it is described by a Swift law. The yield locus is modeled by the anisotropic Hill48 criterion. The optimization technique used is a constrained gradient based Newton-type routine, which means that in every iteration step, a sensitivity calculation has to be performed in order to indicate the direction in which the parameters are to be optimized. The functional to be minimized is a least-squares expression of the discrepancy between the measured and the simulated strain fields at a certain load. The numerical routines as well as the identification results of the different parameters, based on simulated strain fields, are discussed. [less ▲]

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See detailIncomplete muscle strength recovery in injured professional football players
Croisier, Jean-Louis ULg; Ganteaume, S.; Genty, M. et al

in Abstract book du 11th Annual Congress of the European College of Sports Science (ECSSA) (2006)

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See detailSeismic microzonation of slopes susceptible to landsliding : Use of Ambient noise and Earthquake Ground Motion Measurements
Havenith, Hans-Balder ULg; Torgoev, Isakbek; Alvarez, Sonya et al

in Geophysical Research Abstracts (2006)

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See detailEffect of increased CO2 in the second half of incubation on embryonic growth and on the hatching process
Everaert, Nadia ULg; Bruggeman, V.; De Smit, L. et al

Conference (2006)

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See detailSensitivity analysis of programmed cell death and implications for crosstalk phenomena during tumor necrosis factor stimulation
Eissing, Thomas; Waldherr, Steffen; Gondro, Cedric et al

in Proc. of the 2006 IEEE Conference on Control Applications (2006)

Different methods for analyzing the sensitivity of the direct signal transduction pathway of receptor-induced apoptosis to parameter changes are presented. Apoptosis is a form of programmed cell death ... [more ▼]

Different methods for analyzing the sensitivity of the direct signal transduction pathway of receptor-induced apoptosis to parameter changes are presented. Apoptosis is a form of programmed cell death, removing unwanted cells within multicellular organisms to maintain a proper balance between cell reproduction and death. The results indicate the importance of controlling activated caspases by direct inhibition to prevent apoptosis. A misregulation of IAP molecules, one of the main inhibitors, appears to be especially critical. The results indicate how an increased production of this molecule promotes survival and might promote cancer progression, while a reduced degradation might not, thereby providing insight of potential pharmaceutical relevance and also stimulating experimental verification. The different engineering methods applied, nicely complement each other to provide valuable insight into this important process. Because IAPs, among others, are also an important connection to other signaling pathways, the results will enable a more efficient extension of the current model. This is outlined at the example of tumor necrosis factor induced signaling pathways [less ▲]

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See detailVenus' ultraviolet airglow and aurora: Monte Carlo simulations and comparison with observations
Gérard, Jean-Claude ULg; Shematovich, V. I.; Bisikalo, D. V. et al

in European Planetary Science Congress 2006 (2006)

The Venus airglow has been observed from spectrometers on board rockets probes and satellites such as OUVS on Pioneer Venus Venera Galileo HUT on the Space Shuttle and quite recently SPICAV on Venus ... [more ▼]

The Venus airglow has been observed from spectrometers on board rockets probes and satellites such as OUVS on Pioneer Venus Venera Galileo HUT on the Space Shuttle and quite recently SPICAV on Venus Express The spectrum is dominated by emissions from helium hydrogen oxygen and carbon lines and CO bands Localized emissions of OI at 1304 and 1356 A have been sporadically observed on the nightside and are likely caused by precipitation of auroral electrons in the wake of the planet We have developed a Monte Carlo code solving the Boltzmann equation for energetic electrons to calculate the energy distribution function and fluxes of primary and secondary auroral electrons and for photoelectrons The model is used to calculate the vertical distribution of the excitation rate of various excited states For optically thick transitions such as the 3P-3S triplet at 1304 A a radiative transfert code is used to calculate the emergent emission rate We find that the relative intensity of the oxygen and CO Cameron band emissions is a sensitive indicator of the energy of auroral electrons The observed values indicate that the mean energy is on the order of 10-50 eV Dayglow intensity and distributions are also compared with observed characteristics [less ▲]

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See detailColl2-1, Coll2-1 NO2 and myeloperoxidase in OA patients before and after hip or knee replacement
Deberg, M; Labasse, A; Quettier, E et al

Conference (2006)

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See detailPerception of aphid infested tomato plant volatiles by the predator Episyrphus balteatus
Verheggen, François ULg; Arnaud, Ludovic; Capella, Quentin et al

Poster (2006)

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See detailPersistent Ischemic Mitral Regurgitation After Annuloplasty can be Predicted by Pre-operative Echocardiography.
Magne, Julien ULg; Pibarot, P; Dagenais, F et al

Conference (2006)

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See detailProduction de sons chez les Carapidae: un nouveau type de mécanisme
Parmentier, Eric ULg; Lagardère, Jean-Paul; Braquenier, Jean-Baptiste ULg et al

Conference (2006)

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See detailFUNCTIONALITY OF SYNTHETIC POLYCATIONS FOR THE MASKING OF ANTIGENIC SITES BY MEANS OF OPTICAL METHODS
Relancio, MF; Riquelme, B; Dumas, D et al

in Proceeding of the 91st Annual Meeting of the Argentine Physics Association (2006)

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See detailHistological study of the horse stifle menisci in relation with ultrasonographic aspect: preliminary study
De Busscher, Virginie; Schreder, Anelaure; Busoni, Valeria ULg et al

in Italian Journal of Anatomy and Embryology (2006), 111

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See detailUn atelier de préparation des matières colorantes sur le site solutréen Les Maîtreaux (Indre-et-Loire)
Salomon, Hélène ULg; Pomiès, Marie-Pierre; Vignaud, Colette et al

Poster (2006)

L'abondance de matières colorantes sur certains sites d’habitat sans art pariétal indique qu’il existait probablement des utilisations artisanales et domestiques des ces minéraux. L’utilisation de ces ... [more ▼]

L'abondance de matières colorantes sur certains sites d’habitat sans art pariétal indique qu’il existait probablement des utilisations artisanales et domestiques des ces minéraux. L’utilisation de ces matériaux nécessitait l’élaboration de chaînes opératoires de production qu’il a été possible de reconstituer à travers l’étude des matières colorantes provenant des sites solutréens de Combe Saunière (Dordogne), Fressignes (Indre) et Les Maîtreaux (Indre-et-Loire). L'hématite, produisant une poudre rouge, et les oxydes de manganèse, produisant une poudre noire, sont les matières colorantes préférentiellement recherchées par les Solutréens. Il a été possible de mettre en évidence le chauffage des matières colorantes jaune, qui a pour but la production d'hématite. A Combe Saunière et à Fressignes, le contexte ne permet pas de trancher en faveur d’un chauffage volontaire. En revanche, sur le site des Maîtreaux, une aire de 20 m2 environ concentre des matières colorantes qui ont été triées, stockées et transformées par chauffage. Un certain nombre de matières colorantes rouges résultent du chauffage intentionnel et contrôlé des matières colorantes jaunes. De plus, des indices indéniables de réduction en poudre des matières colorantes rouges jonchent cet espace. L’aire de 20 m² définit un véritable atelier de préparation des matières colorantes, inédit à ce jour. Par ailleurs, le statut économique du site et la richesse des ressources de matières colorantes dans l'environnement immédiat du campement sont intimement liés à la nature des restes abandonnés sur les sites. Ainsi, sur le site d’habitat saisonnier de Combe Saunière, les matières colorantes, dont l'environnement immédiat est riche et varié, ont été clairement réduites en poudre et utilisées directement sans trop de transformations. Sur la halte de chasse de Fressignes, les matières colorantes, inexistantes autour du site sont extrêmement rares et ont été exploitées au maximum de leur capacité par réduction en poudre. Sur le site d’atelier de taille du silex des Maîtreaux, les matières colorantes ont été préparées, transformées, triées et stockées. Leur utilisation devait avoir lieu sur un autre gisement. [less ▲]

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