References of "Scientific congresses and symposiums"
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See detailRadio continuum observations of massive stars in open cluster NGC 6231 and the Sco OB1 association
Setia Gunawan, Diah Y A; Chapman, Jessica M; Stevens, Ian R et al

in A Massive Star Odyssey: From Main Sequence to Supernova (2003)

We present results of the Australia Telescope Compact Array (ATCA) radio continuum observations of massive stars in the Sco OB1 association. Most stars detected in the program show spectral indices lower ... [more ▼]

We present results of the Australia Telescope Compact Array (ATCA) radio continuum observations of massive stars in the Sco OB1 association. Most stars detected in the program show spectral indices lower than value expected from thermal free-free emission. [less ▲]

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See detailPlace de la thérapie active de reconditionnement à l’effort aérobie chez le patient fibromyalgique
Maquet, Didier ULg; Croisier, Jean-Louis ULg; Crielaard, Jean-Michel ULg

in Actes du Symposium « Kinésithérapie passive ou active » de la Fédération Nationale des Docteurs et Licenciés en Kinésithérapie (2003)

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See detailRadiosynthesis of 7-[18F]fluoroindole derivatives.
Otabashi, Muhammad ULg; Giacomelli, Fabrice ULg; Lemaire, Christian ULg et al

in Journal of Labelled Compounds & Radiopharmaceuticals (2003), 46

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See detailNanostructured mesoporous TiO2, ZrO2 and SiO2 synthesis by using the non-ionic Cm(EO)n - inorganic alkoxyde system : toward a better understanding on the formation mechanism
Blin, Jean-Luc; Léonard, Alexandre ULg; Gigot, Laurent et al

in Studies in Surface Science and Catalysis (2003), 146

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See detailDisorders of lambs thyroid by a glucosinolate metabolite: the 5-vinyl-l,3-oxazolidine-2-thione (5-VOT)
Mabon, N.; Mandiki, S.; Bister, J.-L. et al

Conference (2003)

The impact of 5-VOT on thyroid was studied in two lambs. They received ad libitum water, hay and concentrates without rapeseed from ten days of age till weaning (65 days of age). At 85 days of age, one of ... [more ▼]

The impact of 5-VOT on thyroid was studied in two lambs. They received ad libitum water, hay and concentrates without rapeseed from ten days of age till weaning (65 days of age). At 85 days of age, one of them was fed with the same diet but mixed with 100g/d of a rapeseed containing high level of progoitrin: 71.4µmol/g DM (variety Jet Neuf). Blood samples were taken fortnightly for the determination of TSH (Thyroid Stimulating Hormone), T3 (Tri-iodothyronin) and T4 (thyroxin) plasma concentrations. [less ▲]

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See detailNon-adiabatic Pulsational Observables in Scuti and Doradus Stars: a Comparison of Different Numerical Codes
Moya, A.; Garrido, R.; Dupret, Marc-Antoine ULg

in Asteroseismology Across the HR Diagram (2003)

Not Available

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See detailUn « four-couvercle » d’origine italique à Reims (Marne, France)
Deru, Xavier ULg

in Kenrick, Philip (Ed.) Rei Cretariae Romanae Fautores Acta (2003)

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See detailSpeed of sound measurements in the evaluation of bone properties in Holstein-Friesian cows: a preliminary study
Sandersen, Charlotte ULg; Guyot, Hugues ULg; Vandeputte, Sébastien ULg et al

in Acta Veterinaria Scandinavica. Supplementum (2003), (Suppl 97), 149

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See detailConfinement and cut-off: A model for the Pion Quark Distribution Function
Stassart, Pierre ULg; Bissey, F.; Cudell, Jean-René ULg et al

(2003)

The pion structure function is investigated in a simple pseudo-scalar coupling model of pion and constituent quark fields. The imaginary part of the forward Compton scattering amplitude is evaluated. We ... [more ▼]

The pion structure function is investigated in a simple pseudo-scalar coupling model of pion and constituent quark fields. The imaginary part of the forward Compton scattering amplitude is evaluated. We show that the introduction of non-perturbative effects, linked through a cut-off to the size of the pion, allows the reproduction of important features of the pion quark distribution function. [less ▲]

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See detailDeux approches contrastées our développer les compétences transversales dans les grands groupes universitaires
Leclercq, Dieudonné ULg; Marotte, Paul; Simon, Fabienne et al

in Beauchesne, André; Boutin, Noël; Mathieu, Sylvie (Eds.) et al Le congrès «L'Université au service de l'apprentissage : à quelles conditions?» (2003)

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See detailRecognition of Quality and Conformity of Concrete Repair Products and Protection Systems/ Belgian and European experiences
Courard, Luc ULg; Darimont, Anne ULg; Degeimbre, Robert ULg et al

in Vaysburd, Alex (Ed.) Bridging the Concrete Repair Industry into a New Era of Sustainable Development (2003)

Recognition of product quality and conformity supposes the existence of two elements: a users’ requirements document and a certification system for product conformity with this document. The document is ... [more ▼]

Recognition of product quality and conformity supposes the existence of two elements: a users’ requirements document and a certification system for product conformity with this document. The document is generally drawn up by a group representing all the interested parties (public and private users, producers, certification or monitoring bodies, testing laboratories, experts …). Depending on circumstances, the document appears as the norm approved in a certain country or as a normative document (approval guide, technical prescriptions,…) recognised by the various interested parties. The certification body is a public or private body which has the competence, independence and impartiality to certify that a duly identified product conforms to a normative document. The certification body works within a certification system that also includes inspection bodies and testing laboratories. In certain cases, the certification body is approved by a competent national authority. In Belgium, the Ministry of Communication and Infrastructures approves certification or inspection bodies and also testing laboratories for building activities. [less ▲]

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See detailA Framework For Humanoid Control and Intelligence
Platt, Robert; Brock, Oliver; Fagg, Andrew et al

in Proceedings of the IEEE International Conference on Humanoid Robots (2003)

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See detailLingopti project: semi-continuous casting process of coper-nickel alloys
Pecquet, Etienne ULg; Pascon, Frédéric ULg; Lecomte-Beckers, Jacqueline ULg et al

in Dick, E.; Vierendeels, J.; Cantrijn, F. (Eds.) et al Proceedings of the 6th national congress on theoretical and applied mechanics (2003)

Lingopti project is a First Europe project. It treats semi-continuous casting of copper-nickel alloys ingots. The research, performed in the University of Liège, consists in the optimisation of the mould ... [more ▼]

Lingopti project is a First Europe project. It treats semi-continuous casting of copper-nickel alloys ingots. The research, performed in the University of Liège, consists in the optimisation of the mould and the whole casting process of the LBP S.A. company (Chênée – Liège) to obtain better cast products. In fact, cast products sometimes present long oscillation marks (λ ≈ 500mm) and some ingots have many internal cracks. The semi-continuous process consists in the vertical casting of 7m height ingots. The goal is also to test different chemical compositions of the material and to predict what happens on the casting process. [less ▲]

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See detailTracking of Objects in Video Streams Using Points of Interest
Gabriel, Pierre; Piater, Justus ULg; Verly, Jacques ULg

in URSI Forum (2003)

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See detailLe syndrome de détresse respiratoire chez le veau nouveau-né : la clé de l’énigme?
Rollin, Frédéric ULg; Danlois, Fabien; Aliaoui, Hamani et al

in Proceedings: De la recherche à la clinique, Société Française de Buiatrie (2003)

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See detail3D nonrigid registration and multimodality fusion for image-guided neurosurgery
Verly, Jacques ULg; Vigneron, Lara M.; Martin, Christophe et al

Conference (2003)

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See detailOSEM reconstruction of pinhole SPECT acquired in body contour mode.
Seret, Alain ULg; Flérès, D.; Defrise, Michel

Poster (2003)

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See detailIncreased hydrogen peroxide in breath condensate after aero-allergen challenge in ascaris-suum sensitived cats
Kirschvink, Nathalie; Delvaux, Francois; Leemans, Jerome et al

Conference (2003)

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See detailL'efficacité au prix de l'hétérogénéité : une approche comparative
Lafontaine, Dominique ULg

in Actes du colloque organisé par le Conseil de l'Education et de la Formation (2003)

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See detailOnce weekly alendronate produces a greater increase in bone mineral density than daily risedronate
Hosking, D; Adami, S; Felsenberg, D et al

in Calcified Tissue International (2003), 72

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See detailOrigine et impact des risques biologiques, physiques et chimiques
Samb, Babacar; Schiffers, Bruno ULg

in Proceedings Bio-Scope - Atelier "Responsable Assurance Qualité Totale" (2003)

La préservation de la santé des consommateurs est devenue une préoccupation majeure en ce début de nouveau millénaire marqué par le poids de la société civile en général et des ligues de consommateurs en ... [more ▼]

La préservation de la santé des consommateurs est devenue une préoccupation majeure en ce début de nouveau millénaire marqué par le poids de la société civile en général et des ligues de consommateurs en particulier. Les exigences en termes de qualité sanitaire et de traçabilité, qui figurent non seulement dans des réglementations toujours plus strictes mais aussi dans des référentiels de qualité ou des cahiers de charge imposés aux producteurs, traduisent la volonté des consommateurs européens de savoir où, comment et quand les aliments qu'ils ont dans leur assiette ont été produits. [less ▲]

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See detailDiversity and complexity of Early Eukaryotic cells
Javaux, Emmanuelle ULg; Knoll, A. H.; Walter, M.

Conference (2003)

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See detailHyperthermie chez le cheval: Approche diagnostique clinique
Amory, Hélène ULg

in Proceedings of the Annual meeting of the French Equine Veterinary Association (AVEF) (2003)

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See detailAnalisis Mineralogico Cuantitativo
Pirard, Eric ULg

in Avila, Margot; Lucion, Christian (Eds.) Mineria, Metalurgia y Medio Ambiente (2003)

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See detailThe effect of race training on biochemical bone markers in young thoroughbreds
Carstanjen, B; Lepage, OM; Sulon, J et al

in Proceedings of the 13th annual scientific meeting of the ECVS (2003)

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See detailSimulations numériques d'essais de cisaillement simple
Flores, Paulo; De Montleau, P.; Habraken, Anne ULg et al

in 16ème Congrès fançais de Mécanique (2003)

Several tests have been designed in order to identify the initial yield locus and the parameters required in hardening laws. Taking into account the work done by Piljman (2001), M&S laboratory has started ... [more ▼]

Several tests have been designed in order to identify the initial yield locus and the parameters required in hardening laws. Taking into account the work done by Piljman (2001), M&S laboratory has started the construction of a bi-axial machien able to perform plane strain test, shear test (monotonic or cyclic), and a simultaneous combination of both. This article presents the simulation of a cyclic simple shear test using three types of hardening. [less ▲]

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See detailVers l'élaboration d'un modèle d'ecobilan pour l'évaluation environnementale de l'agriculture au Maroc: Cas du périmètre irrigué du Tadla
Debouche, Charles ULg; Krim, LHassan

in Debouche, Charles; Fagroud, Mustapha; Debbarh, Abdelhafid (Eds.) et al Equilibre Agriculture-Environnement: Enjeux, outils et perspectives du conseil agricole (2003)

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See detailPion Structure Function and violation of the Momentum Sum Rule
Lansberg, Jean-Philippe ULg; Bissey, F.; Cudell, Jean-René ULg et al

in Blin, A. H.; Hiller, B.; Ruivo, M. C. (Eds.) et al Hadron Physics: Effective Theories of Low Energy QCD N°2 (2003)

We present a method to evaluate the pion structure functions from a box diagram calculation. Pion and constituent quark fields are coupled through the simplest pseudoscalar coupling. The gamma^* pi -> q ... [more ▼]

We present a method to evaluate the pion structure functions from a box diagram calculation. Pion and constituent quark fields are coupled through the simplest pseudoscalar coupling. The gamma^* pi -> q \bar q cross-section is evaluated and related to the structure functions. We then show that the introduction of non-perturbative effects, related to the pion size and preserving gauge invariance, provides us with a straighforward relation with the quark distribution. It is predicted that higher-twist terms become negligible for Q^2 larger than about 2 GeV^2 and that quarks in the pion have a momentum fraction smaller than in the proton. We enlarge the discussion concerning this violation of the momentum sum rule, emphasizing that the sum rule is recovered in the chiral limit and also when the finite size condition is not imposed. [less ▲]

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See detailNumerical simulation of peri-implant tissue differentiation in a bone chamber
Geris, Liesbet ULg; Van Oosterwyck, Hans; Andreykiv, A. et al

in European Cells and Materials (2003), 5(2), 16-17

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See detailLa connaissance partielle chez l'apprenant : pourquoi et comment la mesurer ?
Leclercq, Dieudonné ULg; Poumay, Marianne ULg

in L’évaluation de l’éducation thérapeutique du patient (2003)

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See detailCellulose enzymatic availability in Municipal solid waste
Rodriguez, C.; Hiligsmann, Serge ULg; Ongena, MARC ULg et al

in Christensen; Cossu; Stegmann (Eds.) Proceedings Sardinia 03, Ninth International Waste Management and Landfill Symposium (2003)

We recently developed a new and rapid method to evaluate the biological reactivity of cellulose in Municipal Solid Waste (MSW). This test is based on the enzymatic hydrolysis of cellulose in MSW and can ... [more ▼]

We recently developed a new and rapid method to evaluate the biological reactivity of cellulose in Municipal Solid Waste (MSW). This test is based on the enzymatic hydrolysis of cellulose in MSW and can be related to the digestibility of this polymer in MSW. In this work, we showed that the enzymatic cellulose degradation test (ECD) correlated well with a Biochemical Methane Potential (BMP) assay so that the ECD test can be reliably applied to estimate cellulose bioavailability in various waste samples. These tests have also been used to evaluate the influence of some important parameters that could affect the extent and the rate of cellulose degradation in waste. It appeared that cellulose enzymatic hydrolysis is related to the moisture content but no clear relationship could be established with the cellulose content. Moreover, it is shown that acetic acid produced by the anaerobic degradation of organic matter, and responsible for high COD in young leachates, may slow down or inhibit the enzymatic hydrolysis step and the methanogenesis. [less ▲]

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See detailAuto-associantive neural networks, Part I: Replacement of missing sensor values,
Kerschen, Gaëtan ULg; Golinval, Jean-Claude ULg

in 8th Internationale Conference on Recent Advances in Structural Dynamics, Southampton, 2003 (2003)

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See detailImproving spatial information extraction for local and regional authorities using Very-High-Resolution data - geometric aspects.
Devriendt, Dennis; Goossens, Rudi; De Wulf, Alain et al

in International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences (2003), 34(XXX),

The purpose of the presented research project is to investigate how present-day EO-technology can support local and regional decision-making, particularly in Belgium, and to develop prototype versions of ... [more ▼]

The purpose of the presented research project is to investigate how present-day EO-technology can support local and regional decision-making, particularly in Belgium, and to develop prototype versions of value-added products that fulfil some of the actual information needs, as expressed by Belgian authorities at the local and at the regional level. To accomplish this goal the proposal addresses both technical and user-oriented issues, and builds on the experience of five research teams, each with its own background and particular know-how. The most important objectives of the project are: - to define optimal methods for improved spatial information extraction from high- and very-high resolution data, based on innovative processing techniques; - to identify useful EO-applications at the level of local and regional decision making that are made possible by applying the information extraction methods that will be developed; in this case especially 3D information - to define and develop value-added core data products that will support these applications, and that can be consulted with easy-to-use, widely available IT-tools (CD-ROM, Internet, …). One of the technical research modules is focussing on the geometrical aspects of VHR data processing. In terms of spatial resolution, VHR data have the required level of detail to resolve individual objects in the landscape, in a similar way as airborne data. As such, they have the potential of becoming a useful data source for the extraction of detailed, object-related information, and for the production of large-scale cartographic reference data. The geometry of VHR sensor data, however, completely differs from the geometry of aerial photographs (Bethel et al., 2001). Research is going on to evaluate the geometric qualities of present and future VHR standard data products, from the moment they become available, and to examine what level of geometric accuracy is attained with these data, depending on image parameters, processing strategies, and terrain characteristics (Zhou and Li, 2000). The main objectives of the research module on geometric aspects of VHR data processing are: a) to define an optimal procedure for the derivation of envelope DSMs (Digital Surface Models) and ortho-photoplans from VHR data; b) to develop a theoretical model to study the effect of the oblique viewing angle of VHR data on image displacements caused by building height and relief; c) to evaluate the geometric accuracy of satellite-derived envelope DSMs and ortho-corrected image data in comparison with similar products obtained by means of large-scale aerial photography. The module about geometrical aspects is divided into six specific tasks. a) GPS database creation b) Creation of reference envelope DSMs based on aerial photography c) Ortho-rectification of VHR images and aerial photography based on reference DSMs d) Evaluation of the quality of VHR geo-referenced data e) Modelling of displacements caused by terrain morphology and sensor viewing angle f) Development of envelope DEMs from VHR stereoscopic imagery The project is now in the stage where the quality of the georeferenced and orthorectified data is evaluated. [less ▲]

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See detailLevels of selected PBDEs and PCBs in Belgian human milk
Pirard, C.; De Pauw, Edwin ULg; Focant, Jean-François ULg

in Organohalogen Compounds (2003), 61

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See detailGENIE: a ground-based precursor for the IRSI-Darwin mission
Absil, Olivier ULg

in Aime, Claude; Soummer, Rémi (Eds.) Astronomy with High Contrast Imaging (2003)

During the preliminary phase A of the Ground-based European Nulling Interferometer Experiment (GENIE), a number of interferometric configurations have been studied, in the cases of exozodiacal cloud and ... [more ▼]

During the preliminary phase A of the Ground-based European Nulling Interferometer Experiment (GENIE), a number of interferometric configurations have been studied, in the cases of exozodiacal cloud and hot Jupiter detection. Their expected performances have been computed in light of the measured or expected performances of the VLTI sub-systems. A simple Bracewell nulling interferometer, formed of two Unit Telescopes and working in the L' or N bands, has been identified as a good candidate configuration for exozodiacal cloud detection. External or internal chopping, fringe tracking and intensity matching will be critical issues for this configuration. In the case of hot Jupiter detection, a double Bracewell with internal modulation in the L' band seems well appropriate, and should allow to carry out low resolution spectroscopy on a few bright exoplanets. The basic assumptions and computations which have lead to these candidate configurations are described in this paper. [less ▲]

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See detailMechanical behaviour of chalk reservoir: Numerical modelling of water sensitivity and time dependence effects
Collin, Frédéric ULg; Cui, Yu Jun; Schroeder, Christian ULg et al

Conference (2003)

The paper proposes two numerical models ot the mechanical behaviour of chalk. First, an elasto-plastic constitutive law reproduces the different plastic mechanisms of the chalk and the influence of pore ... [more ▼]

The paper proposes two numerical models ot the mechanical behaviour of chalk. First, an elasto-plastic constitutive law reproduces the different plastic mechanisms of the chalk and the influence of pore fluids by introducing the concept of suction. Secondly, a model able to reproduce time dependence behaviour. Eventually, the paper gives a simulation of an academic reservoir during depletion and waterflooding phase. [less ▲]

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See detailIsolement de suppresseurs hétérologues extragéniques multi-copies de la double mutation de levure msb3-msb4-
Delroisse, Jean-Marc; Breban, Martine; Burny, Arsène et al

Poster (2003)

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See detailFormasup : un 3e cycle en pédagogie universitaire qui met en oeuvre sept clés méthodologiques au service du déploiement de pratiques de qualité en EAD
Poumay, Marianne ULg

in L'université au service de l'apprentissage : A quelles conditions ? (2003)

L'article présente le curriculum "Formasup" (Master Complémentaire depuis 2007) et les sept principes méthodologiques qui présidaient à son organisation en 2003.

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See detailFollow-up of iron microalbuminuria in hypertensive patients: a belgian promise survey
Bovy, Christophe ULg; Beguin, Yves ULg; Gothot, André ULg et al

in Acta Clinica Belgica (2003), 58-3(4), 328

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See detailSynthèse des débats
Marcoen, Jean Marie ULg; Istasse, Ch.

in Actes du Colloque : Le droit international dans le domaine de l'environnement. (2003)

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See detailQuantification of Angiogenesis of Embryonic Implantation Site by Image Analysis
Le Maire, Sophie; Blacher, Silvia ULg; Frankenne, F. et al

Conference (2003)

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See detailSynthèse d'analogues de tétraponérines, alcaloïdes défensifs des fourmis du genre Tetraponera
Rouchaud, Anne; Durvaux, Christophe; Laurent, Pascal ULg et al

Poster (2003)

Les fourmis du genre Tetraponera appartiennent a la sous-famille des Pseudomyrmecinae et sont exceptionnelles par leur comportement défensif particulier. En effet, en cas d'attaque, ces fourmis disposent ... [more ▼]

Les fourmis du genre Tetraponera appartiennent a la sous-famille des Pseudomyrmecinae et sont exceptionnelles par leur comportement défensif particulier. En effet, en cas d'attaque, ces fourmis disposent leur abdomen latéralement et badigeonnent la cuticule de 1'adversaire au moyen de leur aiguillon en forme de tire-ligne. L'injection en chromatographie gazeuse capillaire de cette sécrétion a montre qu'elle était constituée de huit dérivés, les tétraponérines T-1 à T-8. Ces molécules se rattachent a des squelettes tricycliques originaux et possèdent des propriétés neurotoxiques et insecticides. Dans le cadre d'une étude structure-activité de ces alcaloïdes, nous nous sommes intéressés à la synthèse d'analogues basés sur un squelette décahydro-dipyrido[l,2-a : 1’,2'-c]pyrimidine. Ce travail s'inspire d'une synthèse des tétraponérines T-1, T-2, T-5 et T-6 basée sur la réaction « one pot» entre deux molécules de 1-pyrroline et du malonate de diéthyle pour former un lactame tricyclique. Les différentes conditions réactionnelles utilisées pour synthétiser la molécule à partir de 1-pipéridéine et de malonate de diéthyle, ainsi que la nature et la détermination de structure des produits obtenus dans chaque cas seront discutées. [less ▲]

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See detailSemi-automated high throughput extraction and cleanup method for the analysis of polybrominated diphenyl ethers, polybrominated, and polychlorinated biphenyls in human serum
SjÖdin, Andreas; Jones, Richard S.; Lapeza, Chester et al

in Organohalogen Compounds (2003), 60

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See detailNormes et textes en vigueur pour la validation
Hubert, Philippe ULg

Conference (2003)

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See detailBiogeography and Ecology of a dimorphic trait in Triturus alpestris (Amphibia, Caudata)
Denoël, Mathieu ULg; Duguet, Rémi; Dzukic, Georg et al

Poster (2003)

Paedomorphosis is an evolutionary process in which larval structures are retained in adult animals. In newts and salamanders, this heterochronic process is widely represented and concerns the retention of ... [more ▼]

Paedomorphosis is an evolutionary process in which larval structures are retained in adult animals. In newts and salamanders, this heterochronic process is widely represented and concerns the retention of gill slits. Our aim was to find out whether habitat and geographical determinants may be associated with paedomorphosis in a European species of newt. To this end, we determined the main characteristics of the aquatic sites containing paedomorphic Alpine newts that have been described in the literature or discovered by one of us. Although metamorphs are widely distributed in Europe, paedomorphs were only found at the southern margin of the geographic range of the species: mainly in the Italian and Balkan peninsulas. They were recorded in 87 aquatic sites. No single trend was outlined for the analyzed ecological parameters of the aquatic and surrounding terrestrial habitats (e.g. altitude, maximum water depth, drying and presence of forest). These results show that paedomorphs can be found in both favorable aquatic habitats surrounded by hostile terrestrial landscapes, but also in temporary waters located in proximity to appropriate terrestrial environments. Models predicting paedomorphosis in varied environments are thus supported, but require complementary investigations on the costs and benefits of each alternative ontogenetic pathway. On the other hand, the southern limitation of the heterochronic phenomenon and the existence of favorable sites in northern and eastern Europe suggest a genetic basis for paedomorphosis in the studied species. [less ▲]

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See detailEffect of imbalance between energy and nitrogen supplies on microbial protein synthesis in growing double-muscled Belgian Blue bulls.
Valkeners, Damien; Beckers, Yves ULg; Piron, Fabien ULg et al

in Proceeding of the British Society of Animal Science 2003 (2003)

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See detailInvestigation of transverse cracks initiation in continuous steel casting using a finite element approach
Castagne, S.; Habraken, Anne ULg

in Advances in Computational & Experimental Engineering (2003)

A numerical model for steel at elevated temperature which is based on a mesoscopic finite element approach is presented. The objective of the research is the analysis of damage evolution in the material ... [more ▼]

A numerical model for steel at elevated temperature which is based on a mesoscopic finite element approach is presented. The objective of the research is the analysis of damage evolution in the material using information from the macroscopic and microscopic scales. As a final application our results are used to study the industrial process of continuous casting of low carbon steel. [less ▲]

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See detailFLE, FLS, FLM : quelles didactiques pour quels enseignements à quels publics ?
Defays, Jean-Marc ULg

in Delcomminette, Bernadette; Dumortier, Jean-Louis; Louis, Vincent (Eds.) et al Le français langue maternelle, étrangère, seconde: vers un nouveau partage? (2003)

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See detailThe hunt for early eukaryotes in Archean and Proterozoic oceans
Javaux, Emmanuelle ULg; Knoll, A. H.; Marshall, C. P. et al

Poster (2003)

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See detailEmplacement of the Lyngdal granodiorite (SW Norway) at the brittle-ductile transition in a hot crust
Bogaerts, Michel; Scaillet, Bruno; Vander Auwera, Jacqueline ULg

in Geophysical Research Abstracts (2003), 5

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See detailSWAP: Sun watcher using APS detector on-board PROBA-2, a new EUV off-axis telescope on a technology demonstration platform
Defise, Jean-Marc ULg; Berghmans, David; Hochedez, Jean-Francois E et al

in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series (2003)

SWAP (Sun Watcher using Active Pixel System detector and Image Processing) is an instrument that has been selected to fly on the PROBA-II technology demonstration platform, a program of the European Space ... [more ▼]

SWAP (Sun Watcher using Active Pixel System detector and Image Processing) is an instrument that has been selected to fly on the PROBA-II technology demonstration platform, a program of the European Space Agency (ESA) to be launched in 2006. This paper presents the instrument concept and its scientific goals. SWAP uses an off-axis Ritchey Chretien telescope that will image the EUV solar corona at 19.5 nm on a specifically fabricated extreme ultraviolet (EUV) sensitivity enhanced CMOS APS detector. This type of detector has advantages that promise to be very profitable for solar EUV imaging. The SWAP design is built on a similar concept as the MAGRITTE instrument suite for the NASA Solar Dynamics Observatory (SDO) mission to be launched in 2007. The optics have been adapted to the detector size. The SWAP PROBA-2 program will be an opportunity to demonstrate and validate the optical concept of MAGRITTE, while it will also validate space remote sensing with APS detectors. On the science outcomes, SWAP will provide solar corona images in the Fe XII line on a baselined 1-min cadence. Observations with this specific wavelength allow detecting phenomena, such as solar flares or 'EIT-waves", associated with the early phase of coronal mass ejections. Image recognition software will be developed that automatically detects these phenomena and sends out space weather warnings. Different modules of this software will run both on the ground system as well as on the onboard computer of PROBA II. The SWAP data will complement the observations provided by SOHO-EIT, and STEREO-SECCHI. [less ▲]

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See detailProstaglandin D2 affects the differentiation of human dendritic cells
Gosset, Philippe; Bureau, Fabrice ULg; Pichavant, Muriel et al

Poster (2003)

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See detailCassini UVIS time-resolved Jupiter auroral data compared to QP radio bursts
Pryor, W.; Hospodarsky, G.; Stewart, I. et al

Poster (2003)

The Cassini Ultraviolet Imaging Spectrograph (UVIS) observed Jupiter in a 4-sec integration "high time-resolution mode" on Jan 8, 13-14, and 20-21 in 2001. In this mode Extreme-Ultraviolet and Far ... [more ▼]

The Cassini Ultraviolet Imaging Spectrograph (UVIS) observed Jupiter in a 4-sec integration "high time-resolution mode" on Jan 8, 13-14, and 20-21 in 2001. In this mode Extreme-Ultraviolet and Far-Ultraviolet spectra were obtained with reduced spectral and spatial resolution in order to study rapid variations in H2 band and H Lyman alpha emission. Previous work has shown that the region inside Jupiter's main auroral ovals contains highly variable spots of emission (auroral flares) that persist for typically 1 or 2 minutes. This duration is similar to that in Jupiter's quasi-periodic (QP) radio bursts. We compare UVIS data to simultaneous Galileo Plasma Wave Subsystem (PWS) and Cassini Radio PWS (RPWS) observations. Jan 8 was an active period for UV variability, that we associate with polar auroral flares. There is a correlation between the radio and UV bursts in this period, suggesting that they are related phenomena. We will also explore coordinated Hubble Space Telescope Imaging Spectrograph time-tagged UV images from Jan 13-14 and Jan 20-21, 2001 to study the spatial properties of the auroral flares. [less ▲]

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See detailModeling of the influence of electric forces on mechanical structures
Rochus, Véronique ULg; Duysinx, Pierre ULg; Golinval, Jean-Claude ULg

Conference (2003)

This paper is a summary concerning the modeling of the strong electro-mechanical coupling appearing in micro-electro-mechanical systems (MEMS). These systems are very small devices (typical size of a few ... [more ▼]

This paper is a summary concerning the modeling of the strong electro-mechanical coupling appearing in micro-electro-mechanical systems (MEMS). These systems are very small devices (typical size of a few microns), in which electric phenomena as well as mechanical and dynamical phenomena exist. The finite element method is used to discretize simultaneously the electrostatic and mechanical fields. The formulation is consistently derived from variational principles based on the electro-mechanical free energy. In classical weakly coupled formulations staggered iteration is used between the electrostatic and the mechanical domain. Therefore, in those approaches, linear stiffness is evaluated by finite differences and equilibrium is reached typically by relaxation techniques. The strong coupling formulation presented here allows to derive exact tangent matrices of the electro-mechanical system. Thus it allows to compute non-linear equilibrium positions using Newton- Raphson type iterations combined with adaptive meshing in case of large displacements. Furthermore, the tangent matrix obtained in the method considered in this paper greatly simplifies the computation of vibration modes and frequencies of the coupled system around equilibrium configurations. The non-linear variation of frequencies with respect to voltage and stiffness can then be investigated until pull-in appears. In order to illustrate the effectiveness of the proposed formulation numerical results are shown first for the reference problem of a simple flexible cap acitor, then for the model of a micro-bridge. [less ▲]

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See detailLe contrat de travail sans papier
Kefer, Fabienne ULg

in Le droit des affaires en évolution. Le contrat sans papier (2003)

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See detailLe modèle WOLF : outil de modélisation d'écoulement de crue, de dimensionnement et de gestion des ouvrages hydrauliques
Pirotton, Michel ULg; Erpicum, Sébastien ULg; Archambeau, Pierre ULg et al

in Actes du colloque annuel du CEBEDEAU : Gestion des eaux pluviales et assainissement (2003)

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See detailSmall mafic intrusions as indicators of downslope draining of dense residual liquids in anorthositic diapirs
Vander Auwera, Jacqueline ULg; Ernst, Gérald; Weis, Dominique et al

in Geophysical Research Abstracts (2003), 5

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See detailScreening of histone deacetylase (HDAC) expression profiles in prostate cancer tissues leads to the identification of HDAC8 as a novel marker of smooth muscle differentiation
Waltregny, David ULg; Glénisson, Wendy; Tran, Syv Li et al

Conference (2003)

Background: Histone deacetylation mediated by histone deacetylases (HDAC) plays a key role in the regulation of gene expression. Inhibition of HDAC activity is associated with profound alterations in ... [more ▼]

Background: Histone deacetylation mediated by histone deacetylases (HDAC) plays a key role in the regulation of gene expression. Inhibition of HDAC activity is associated with profound alterations in cellular biology, such as cell growth arrest, apoptosis and differentiation. It has been hypothesized that altered HDAC expression and/or activity could play a role in cancer development and progression. Objectives: To investigate this possibility, we undertook a study in which we screened HDAC expression profiles in human prostate cancer. In addition, we sought to determine the specific biological effects of selected HDACs. Methods: A variety of techniques, including immunochemistry, Q-RT-PCR, and immunobloting, were used to examine the expression of several class I and class II HDACs in human prostate cancer cell lines and matched malignant and non-malignant prostate tissues. Analysis of the specific biological effects of selected HDACs was performed after knocking down their expression with the use of specific small interfering RNAs (siRNA) and/or after forcing their overexpression by transfection of the cDNAs of interest. Results: Normal prostate epithelial and stromal cells displayed distinct HDAC expression profiles, suggesting specific functions for these enzymes in the prostate. Human prostate cancer cells did not exhibit significant alterations in the abundance of any of the HDAC enzymes analyzed. One of the HDACs tested, herein referred to as HDACX, was specifically expressed, in vivo, by cells showing smooth muscle phenotype, including vascular and prostate smooth muscle cells and myoepithelial cells. HDACX expression co-localized with the expression of the specific smooth muscle marker alpha smooth muscle actin (alpha-SMA) in all human tissues tested. Nucleo-cytoplasmic fractionation experiments showed that HDACX was mainly expressed in the cytosol of human smooth muscle cells (HSMC) obtained from umbilical cord veins. Transfection experiments leading to overexpression of HDACX in mouse fibroblasts indicated that the enzyme was detected both in the cytosol and in the nucleus. By immunocytochemistry, it was observed that HDACX pattern of expression was reminiscent of actin stress fibers, suggesting that this HDAC may be involved in the regulation of the smooth muscle cell cytoskeleton. Trichostatin A (TSA), a specific global HDAC inhibitor, as well as specific HDACX siRNAs, were able to completely prevent the TGFß1-induced differentiation of fibroblasts into myofibroblasts, as assessed by alpha-SMA abundance. Forced downregulation of HDACX by siRNAs in HSMC caused a dramatic reduction in their contraction capacity, as determined with the use of hydrated collagen lattices contraction assays. Conclusions : HDACs diplay distinct expression profiles among normal prostate epithelial and stromal cells. The abundance of the HDACs analyzed in this study is not altered in prostate cancer. Further experiments are required to determine whether the activity of these enzymes is altered in prostate cancer. We have identified for the first time an HDAC that (i) is specifically expressed in cells showing smooth muscle phenotype, (ii) is required for myofibroblastic differentiation, and (iii) is involved in smooth muscle cell contraction. This HDAC may become a target for the therapy of several pathological conditions, including chronic inflammation and cancer, in which myofibroblasts play a major role. [less ▲]

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See detailStrength imbalances in hamstring strains
Croisier, Jean-Louis ULg; Forthomme, Bénédicte ULg; Crielaard, Jean-Michel ULg

in Vlaams Tijdschrift voor Sport Geneeskunde en Sport Wetenschappen (2003), 95

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See detailNon destructive analysis of a 16th manuscript from the Gospel Book of Robert Quercentius
Denoël, Sophie; Weber, Georges ULg; Allart, Dominique ULg et al

in Townsend, Joyce; Eremin, Katherine; Adriaens, Annemie (Eds.) Conservation Science 2002. Papers from the Conference held in Edinburgh, Scotland 22-24 May 2002 (2003)

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See detailEtude rétrospective des causes médicales d’intolérance à l’effort chez 345 chevaux
Ponthier, Jérôme ULg; Van Erck, Emmanuelle; Art, Tatiana ULg et al

in Proceedings du Congrès de l'Association Vétérinaire Equine Française (AVEF) (2003)

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See detailDetails on DARWIN and the Search for Extrasolar Planets
Kaltenegger, L.; Fridlund, M.; Absil, Olivier ULg

in Deming, Drake; Seager, Sara (Eds.) Scientific Frontiers in Research on Extrasolar Planets (2003)

The direct detection of an earth-like planet close to its parent star is challenging because the signal detected from the parent star is between 10[SUB]9[/SUB] and 10[SUB]6[/SUB] times brighter than the ... [more ▼]

The direct detection of an earth-like planet close to its parent star is challenging because the signal detected from the parent star is between 10[SUB]9[/SUB] and 10[SUB]6[/SUB] times brighter than the signal of a planet in the visual and infrared (IR), respectively. Future space based missions like DARWIN and TPF concentrate on the region between 6 and 18 microns, a region that contains the carbon dioxide, water, and ozone spectral features of the atmosphere. Using several small collecting telescopes and a beam combiner allows us to build an instrument with an angular resolution normally associated with monolithic telescopes of much larger diameters. The relative positions of the telescopes, forming the interferometer, are selected such that when the optical signals, collected by the individual telescopes, are coherently combined, the small angular distance between the planet and the star can be resolved. Different configurations of the free flying interferometer array influence the performance of the nulling array. The concepts for space nulling interferometers and the influence of different schemes of beam combination on the detected signal are investigated. The contribution of background noise to the detected signal is examined. [less ▲]

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See detailAppui au développement rural multisectoriel au Laos
Lebailly, Philippe ULg

in Premières rencontres internationales de la CUD "Construire ensemble le Savoir Universitaire pour le Développement" (2003)

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See detailL'iconographie du meurtre de saint Lambert de Liège
George, Philippe ULg

in Bischofsmord im Mittelalter. Murder of Bishops, 22 septembre 2000 (2003)

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See detailUpdating the Jungfraujoch FTIR databases : current status
Duchatelet, Pierre ULg; Mahieu, Emmanuel ULg; Zander, Rodolphe ULg et al

(2003)

Since the middle of the 20th century, the University of Liège has been active at the International Scientific Station of the Jungfraujoch (ISSJ) in the Swiss Alps (46.5°N, 8.0°E, 3580m asl) to study the ... [more ▼]

Since the middle of the 20th century, the University of Liège has been active at the International Scientific Station of the Jungfraujoch (ISSJ) in the Swiss Alps (46.5°N, 8.0°E, 3580m asl) to study the chemical composition of both the solar photosphere and the Earth’s atmosphere. Since 1989, the ISSJ is an accepted site of the northern midlattitude primary Alpine station of the NDSC (Network for the Detection of Stratospheric Change). This acceptance resulted from earlier monitoring activities by Ulg of a large number of atmospheric constituents. Within the NDSC frame, a special attention and many efforts have been devoted to the monitoring of the most important atmospheric constituents involved both in the erosion of stratospheric ozone and in the greenhouse capacity of the troposphere, after it became clear that human activities have a direct impact on these two processes. Using two high resolution Fourier transform infrared (FTIR) spectrometers, over 25000 wide-band solar spectra encompassing nearly 1700 days since the mid 1980s have been recorded and analyzed to study, quasi simultaneously and repeatedly, local, seasonal and secular variations of some 20 gaseous telluric species. So far, most results have been reported, demonstrating the power of infrared spectrometric solar observations to characterize the chemical composition of the atmosphere. These datas, archived in terms of total vertical column abundances (e.g., at the NDSC-Data Host Facility; http://www.ndsc.ws), are expressed in number molecules per cm2 above the site using best-know input parameters (i.e. spectroscopic-, instrumental-, environmental-) in the retrieval procedure. Meanwhile, more sophisticated algorithms, based on the “Rodgers” optimal estimation method, have been developed, allowing to derive partial tropospheric- and stratospheric columns for various species, including HCl, ClONO2, O3, HF, CO, N2O, CH4, HCN, OCS. This contribution reports related results for HCl and ClONO2. [less ▲]

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See detailTowards Scalable and Affordable Content Distribution Services
Plagemann, Thomas; Goebel, Vera; Griwodz, Carsten et al

in Proceedings of ConTel (2003)

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See detailNumerical mdeling of hydro-mechanical fracture behaviour
Guiducci, Chiara; Collin, Frédéric ULg; Radu, Jean-Pol ULg et al

Conference (2003)

A numerical approach for modeling coupled Hydro-Mechanical fracture behavior in 2D is presented in this paper. This approach accounts for the strong dependence of the flow characteristics on fracture ... [more ▼]

A numerical approach for modeling coupled Hydro-Mechanical fracture behavior in 2D is presented in this paper. This approach accounts for the strong dependence of the flow characteristics on fracture apertures and offers an anisotropic description of the flow propagation in the fracture. An interface finite element and a constitutive model are developed . In order to validate the applicability of the model to general geomechanic problems, 2D simulations were performed. Results show the good application of the mathematical model and the fundamental hydraulic role played by the fractures. [less ▲]

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See detailFormer des étudiants de première candidature universitaire à des compétences transversales : lesquelles et comment ?
Leclercq, Dieudonné ULg

in L'école, dans quel(s) sens ? Actes du 2e congrès des chercheurs en éducation, Louvain-la-Neuve, 12-13 mars 2002 (2003)

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See detailEpreuves externes : évaluation de la qualité des apprentissages ou des curricula ?
Lafontaine, Dominique ULg

in Actes du 15e colloque international de l'ADMEE-Europe et congrès annuel de la SSRE, Université de Lausanne, 5-7 septembre 2002 (2003)

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See detailSolid lipid Nanoparticles for drug Pumonary Administration
Sanna, Vanna; Kirschvink, Nathalie; Gustin, Pascal ULg et al

in Proceedings of 30th International Symposium on Controlled Release of Bioactive Materials (2003)

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See detailNumerical simulations of tissue ingrowth and differentiation around a loaded titanium implant in a bone chamber
Van Oosterwyck, Hans; Geris, Liesbet ULg; Vander Sloten, Jos et al

in Proceedings of the symposium on integrated systems in dental healthcare (2003)

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See detailMicro-macro analysis of steel sheet behaviour in finite element simulations. Application to deep-drawing process.
Duchene, Laurent ULg; Godinas, A.; Cescotto, Serge ULg et al

in Journal de Physique IV (2003), 105

This paper presents a constitutive law based on taylor's model implemented in our non-linear finite element code LAGAMINE. The yield locus is only locally described and a particular interpolation method ... [more ▼]

This paper presents a constitutive law based on taylor's model implemented in our non-linear finite element code LAGAMINE. The yield locus is only locally described and a particular interpolation method has been developed. This local yield locus model uses a discrete representation of the material's texture. The interpolation method is presented and a deep-drawing application is simulated in order to show up the influence of the texture evolution during forming processes. [less ▲]

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See detailLa mission pénale de l'auditorat du travail: un mouvement de balancier
Kefer, Fabienne ULg

in Espace judiciaire et social européen (2003)

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See detailAn implementation of on-line transient stability screening and control using distributed processing
N'Guessan, Alexandre; Pavella, Mania ULg; Wehenkel, Louis ULg

in Proc. of Intelligent Systems Application to Power Systems (2003)

This paper describes the implementation of an online transient stability assessment software, composed of algorithms for contingency screening and for the design of preventive control actions. The ... [more ▼]

This paper describes the implementation of an online transient stability assessment software, composed of algorithms for contingency screening and for the design of preventive control actions. The implementation of the two parts rely on a hybrid method called SIME, coupled with a time domain simulation engine and power flow program. The speed up of the contingency screening module is obtained by distributing contingencies on a cluster of computers to comply with extended real-time speed requirements. A compensation scheme is used to determine active power rescheduling alternatives in order to stabilize the dangerous contingencies identified at the screening step. The software has been coupled with an industrial EMS platform, and tested in the simulation environment. [less ▲]

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See detailA probabilistic approach to power system network planning under uncertainties
Vassena, Stefano; Mack, Philippe; Druet, Christophe et al

in Proceedings of the IEEE Bologna Power Tech Conference (2003)

This work proposes a methodology and a practical tool for the study of long-term network planning under uncertainties. In this approach the major external uncertainties during the planning horizon are ... [more ▼]

This work proposes a methodology and a practical tool for the study of long-term network planning under uncertainties. In this approach the major external uncertainties during the planning horizon are modeled as macroscenarios at different future time instants. On the other hand, the random nature of actual operating conditions is taken into account by using a probabilistic model of microscenarios based on past statistics. Massive Monte-Carlo simulations are used to generate and simulate a large number of scenarios and store the detailed results in a relational database. Data mining techniques are then applied to extract information from the database so as to rank scenarios and network reinforcements according to different criteria. [less ▲]

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See detailThe use of the Tosoh AIA-600II and AIA-1800 immunoassay analysers for the determination of CTNI
Chapelle, Jean-Paul ULg; Aldenhoff, Marie-Claire ULg; Gielen, Jacques

in Clinical Chemistry & Laboratory Medicine (2003), 41

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See detailAdaptation du K-ABC ; vers une identification des dysharmonies développementales dans la trisomie 21
Frenkel, Stéphanie ULg; Bourdin, Béatrice; Vandromme, Luc

Conference (2003)

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See detailCould diffuse modes of failure be analyzed by a material instability condition?
Darve, Félix; Servant, Guillaume; Collin, Frédéric ULg et al

Conference (2003)

Localized modes of failure are classically analyzed by a plastic strain localization criterion given by the vanishing values of the determinant of the acoustic tensor. However, some failure modes do not ... [more ▼]

Localized modes of failure are classically analyzed by a plastic strain localization criterion given by the vanishing values of the determinant of the acoustic tensor. However, some failure modes do not exhibit any localization pattern and a crucial question appears : what is the proper criterion for diffuse failure ? An answer attempt is proposed in this paper in both frameworks of continuum mechanics and discrete mechanics through the second order work criterion. [less ▲]

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See detailA New Version of the Moment Method, Optimized for Mode Identification in Multiperiodic Stars
Briquet, Maryline ULg; Aerts, C.

in Asteroseismology Across the HR Diagram (2003)

Not Available

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See detailL'opération RESSAC : diagnostic métacognitif avant la période de 'bloque'
Leclercq, Dieudonné ULg; Detroz, Pascal ULg; Dupont, Chantal ULg et al

in Actes du 16ème colloque international de l'ADMEE-Europe, 4-6 septembre 2003 (2003)

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See detailIndividualized versus standardized exercise training for claudicant patients.
Magne, Julien ULg; Boccalon, H; Bouley, M et al

Conference (2003)

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See detailEvaluacion de la estabilidad de emulsiones alimentarias utilizado elmétodo optico Turbiscan.
Flores-Aguilar, E.; Lognay, Georges ULg; Blecker, Christophe ULg et al

in Proceedings "VI Congreso National de Ciencia y Tecnologia de Alimentos" (2003)

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See detailEstimation of genetic parameters of test-day records for milk yield for the first three lactations of French Holstein cows
Druet, Tom ULg; Jaffrézic, F.; Ducrocq, V.

in Book of Abstracts of the 54th Annual Meeting of the European Association for Animal Production (2003)

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See detailNouveau concept algorithmique pour un modèle de laminage à froid en régime mixte
STEPHANY, A.; Ponthot, Jean-Philippe ULg; COLLETTE, C. et al

in Proceedings of the 6ème colloque national en calcul des structures (2003)

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