References of "Scientific congresses and symposiums"
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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 detailPerspectives in data fusion between x-ray computed tomography and electrical capacitance tomography in an absorption column
Toye, Dominique ULg; L'Homme, Guy ULg; Crine, Michel ULg et al

in Dyakowski, T.; Kantzas, A.; Ronson, P. (Eds.) Proceedings of 3rd World Congress on Industrial Process Tomography, Banff, Canada, 2-5 septembre 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 detailAnalisis Mineralogico Cuantitativo
Pirard, Eric ULg

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

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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 detailStatistique bayésienne des processus ponctuels marqués. Le rôle des variables latentes dans la démarche de modélisation.
Bernier, Jacques; Parent, Eric; Boreux, Jean-Jacques ULg

Conference (2003)

En statistique bayésienne le raisonnement conditionnel est à la base de la solidarité étroite entre modélisation et calcul par algorithmes MCMC. Un des aspects les plus fructueux de son utilisation est l ... [more ▼]

En statistique bayésienne le raisonnement conditionnel est à la base de la solidarité étroite entre modélisation et calcul par algorithmes MCMC. Un des aspects les plus fructueux de son utilisation est l'utilisation explicite des variables latentes ou cachées. On présente trois exemples de séries météorologiques représentées par des modèles de processus ponctuels marqués de complexité croissante. Sur ces exemples on montre la souplesse de modélisation et les facilités de calcul apportées par les variables latentes en relation avec les techniques "d'augmentation de données de Tanner". [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 detailLa sous-traitance: développements récents
Kohl, Benoît ULg

in Vanwijck, Michèle (Ed.) Contrat d'entreprise et droit de la construction (2003)

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See detailSelf-Enrichment of Galactic Halo Globular Clusters
Parmentier, G.; Noels-Grötsch, Arlette ULg; Gilmore, G. F. et al

in Piotto (Ed.) New horizons in globular cluster astronomy : proceedings of a conference held at Università di Padova, Padova, Italy, 24-28 June, 2002 (2003)

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See detailSérapis et l'aigle : polysémie d'un iconotype
Veymiers, Richard ULg

in Cannuyer, Christian (Ed.) Les lieux de culte en Orient. Jacques Thiry in honorem (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 detailValidation of two homologous radioimmunoassays for measuring pregnancy-associated glycoprotein in ewes.
El Amiri, B.; Karen, A.; Sulon, J. et al

in Reproduction in Domestic Animals (2003), 38(4), 358

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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 detailLa filière Porc Fleuri : vers une appellation d'origine protégée
Berti, Fabio ULg; Beduin, Jean-Marie ULg; Verleyen, Vincent ULg et al

in Huitième Carrefour des Productions animales "L'avenir des filières de qualité différenciées" (2003)

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See detailLes écrivains engagés et le réalisme socialiste (1944-1953)
Denis, Benoît ULg

in Sociétés & Représentations : les Cahiers du CREDHESS (2003), (15), 247-259

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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 detailActivation and inactivation of bradykinin in rats.
Damas, Jacques ULg; Garbacki, Nancy ULg

in Pflügers Archiv : European Journal of Physiology (2003), 446

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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 detailTransient stability emergency control combining open-loop and closed-loop technique
Ruiz-Vega, Daniel; Glavic, Mevludin; Ernst, Damien ULg

in Proceedings of the IEEE Power Engineering Society General Meeting, 2003 (2003)

An on-line transient stability emergency control approach is proposed, which couples an open-loop and a closed-loop emergency control technique. The open-loop technique uses on-line transient stability ... [more ▼]

An on-line transient stability emergency control approach is proposed, which couples an open-loop and a closed-loop emergency control technique. The open-loop technique uses on-line transient stability assessment in order to adapt the settings of automatic system protection schemes to the current operating conditions. On the other hand, the closed-loop technique uses measurements in order to design and trigger countermeasures, after the contingency has actually happened, then to continue monitoring in a closed-loop fashion. The approach aims at combining advantages of event-based and measurement-based system protection schemes, namely, speed of action and robustness with respect to uncertainties in system modeling. It can also comply with economic criteria. [less ▲]

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See detailUniformité du détecteur en tomoscintigraphie avec collimateur sténopé
Bleeser, Frédéric; Seret, Alain ULg

in Médecine Nucléaire : Imagerie Fonctionnelle et Métabolique (2003), 27(9), 460

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See detailQualitative survey of five beech damaging coleoptera (Scolytidae and Lymexylonidae) in Wallonia (Southern Belgium)
Henin, Jean-Marc; Huart, Olivier; Lejeune, Philippe ULg et al

in McManus, M. L.; Liebhold, A. M. (Eds.) Proceedings Ecology, Survey and Management of Forest Insects (2003)

In 2000 and 2001, Trypodendron domesticum L. and T. signatum (F.) (Col.: Scolytidae) were one of the main causes of the depreciation of more than 1,600,000 m³ of standing beech trees, Fagus sylvatica L ... [more ▼]

In 2000 and 2001, Trypodendron domesticum L. and T. signatum (F.) (Col.: Scolytidae) were one of the main causes of the depreciation of more than 1,600,000 m³ of standing beech trees, Fagus sylvatica L., in Wallonia (Southern Belgium). In 2001, a survey aiming at assessing the range of those indigenous ambrosia beetles, so far discreet and poorly studied, pointed out that they are omnipresent all over Wallonia. Two other scolytids and one lymexylonid (Col., Lymexylonidae) were also frequently caught, which made it possible to outline their regional distribution too. [less ▲]

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See detailKarsts en roches cristallines silicatées non carbonatées.. Cas dans les métagabbros : grotte de Guessédoundou, Niger occidental
Willems, Luc ULg; Pouclet, André; Vicat, Jean-Paul

in Rodet, Joël (Ed.) Actes des Journées Européennes de l'AFK 2003 (2003)

Since the Seventies, a séries of phenomena developed in non carbonated silicated rocks question the traditional vision of karst. The term of karst is used in the meaning of "any feature of the classical ... [more ▼]

Since the Seventies, a séries of phenomena developed in non carbonated silicated rocks question the traditional vision of karst. The term of karst is used in the meaning of "any feature of the classical karst morphology (caves, sink-holes, lapiaz...) where dissolution plays the main genetic action and this in any kind of rocks". The cave of Guéssédoundou illustrâtes a karst in métagabbros. It opens at the top of a small hill, in a dépression twenty meters long and three to four meters deep. The walls of this dépression are subvertical and the bottom is partially occupied by angular pluridecimetric blocks. The cave is opened on several meters in the southern side of the dépression and is prolonged in the form of too narrow conduits to be explore. The bedrock is a metagabbro with fine grains, slightly weathered, crossed by decimetric quartzose veins. Gabbroïc texture is preserved, as well as part of magmatic plagioclases. The remainder is transformed into a mixture of white feldspar and clinozoisite. Pyroxene are pseudomorphosed in actinote and chlorite. The site dépression was created along a N 10° shear zone where rocks suffered important fracturation and fluid transfers, as shown by its silification and ferruginisation.. Moreover, a East-West schistosity, former to shearing, structures the gabbro. The présence of angular blocks of variable size and the absence of human activity trace on the site show that the dépression was formed naturally by collapse of the roof of a more vast cavity whose current cave would be the visible residual prolongation. The absence of flow traces and mechanical abrasion means that this cavity is due only to chemical érosion . At the cave entry and on the subvertical walls of the dépression were formed by alveoli a few centimètres to a few décimètres in diameter. Thèse alveoli of wall are known in other lithologies, in particular in limestones. The absence of salts within the rock draws aside a formation by sait weathering. The smooth aspect and non fractured walls of the cells cannot resuit from a corrosion to a fracturing node. The closed aspect of the dépression and the absence of flow trace eliminate the assumptions from formation by water swirls or eolisation. The genesis of the cave must be earlier to the installation of a weathering cover since the rock is little deteriorated and the alveoli are not developed on a quite particular level which would correspond to a précise pedogenic horizon. Only a generalized dissolution of the métagabbros, in relation to a slow solution circulation, being carried out with the favour of the fracturing plans of the shearing zone makes it possible to explain the formation of the alveoli. The inversion of relief results from a weaker érosion of the rocks made more résistant to this place by the quartz seam mainstay and by the ferruginisation along the shearing zone. In the other hand, the crushed rocks, become porous, drained the infiltrations of meteoric water, facilitating the dissolution processes. The study of the site of Guéssédoundou shows that karstic phenomena can also exist in silico-aluminous formations of crystalline rocks. [less ▲]

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See detailQuel est le "noyau dur" de la formation en géographie? Le point de vue d'un géographe climatologue.
Erpicum, Michel ULg

in Géographes associés , AFDG , Université Lyon II (2003), 27

Which geograpry to teach tomorrow at university? The point of view of a geographer working in climatology and topoclimatology.

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See detailPotential valorization of the fine light fraction of automotive shredder residues (ASR)
Bareel, Pierre-François; Bastin, David ULg; Frenay, Jean ULg

in Proceedings of the International Symposium of Metals and Energy Recovery (2003)

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See detailForecasting Skill Assessment of a Doubly, Two-Way Nested Model of the Ligurian Sea driven by Assimilation of Sea Surface Temperature
Barth, Alexander ULg; Alvera Azcarate, Aïda ULg; Rixen, M. et al

Conference (2003)

The GHER 3D primitive equation model is implemented with threedifferent resolutions: a low resolution model (1/4Ž°) coveringthe whole Mediterranean Sea, an intermediate resolution model (1/20Ž°)of the ... [more ▼]

The GHER 3D primitive equation model is implemented with threedifferent resolutions: a low resolution model (1/4Ž°) coveringthe whole Mediterranean Sea, an intermediate resolution model (1/20Ž°)of the Liguro-Provençal basin and a high resolution model (1/60Ž°)simulating the fine mesoscale structures in the Ligurian Sea. Boundaryconditions and the averaged fields (feedback) are exchanged betweentwo successive nesting levels. The model of the Ligurian Sea is also coupled with the assimilationpackage SESAM. It allows to assimilate satellite data and in situobservations using the local adaptative SEEK (Singular EvolutiveExtended Kalman) filter. Instead of evolving the error space by thenumerically expensive Lyapunov equation, a simplified algebraicequation depending on the misfit between observation and modelforecast is used. Starting from the 1st January 1998 the low and intermediate resolutionmodels are spun up for 18 months. The initial conditions for theLigurian Sea are interpolated from the intermediate resolutionmodel. The three models are then integrated until August 1999. Duringthis period AVHRR Sea Surface Temperature of the Ligurian Sea isassimilated. The results are validated by using CTD and XBT profilesof the SIRENA cruise from the SACLANT Center. In a second validation exercise,the AVHRR SST and model forecast %(not yet affected by the SST used for validation) are decomposed at different scalesusing a horizontal wavelet transform.The processes characteristic for each scale are isolated in the model and the SST images.The error statistics calculated on the wavelet amplitudes can thus be related to the ability of the model in forecasting the correspondingmarine processes. In a second validation exercise, the AVHRR SST and model forecast areboth decomposed at different scales using a horizontal wavelet transform.The characteristic processes for each scale are isolated in the modeland the SST images. The error statistics calculated on the waveletamplitudes can thus be related to the ability of the model inforecasting the corresponding marine processes. [less ▲]

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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 detailLong-term prognosis of congestive heart failure in patients with acromegaly
Bihan, H.; Valdes Socin, Hernan Gonzalo ULg; Levasseur, S. et al

in The 85th Annual Meeting of the Endocrine Society - Abstract book (2003)

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See detailStability analysis of Bénard-Marangoni convection in the case of cooling from below
Dondlinger, Mireille; Dauby, Pierre ULg

in Proceedings du 6ème Congrès National de Mécanique théorique et appliquée (NCTAM-2003), Gent (Belgium), 26-27 may 2003 (2003)

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See detailSynthesis of [18F]fluorinated a-methyl-a-amino acids by phase transfer catalysis for potential PET application.
Wouters, L.; Lemaire, Christian ULg; Plenevaux, Alain ULg et al

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

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See detailPopulism and producerism in Europe and United States
Jamin, Jérôme ULg

Conference (2003)

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See detailInclusions and Carbides characterisation in High-Speed Steels
Tchuindjang, Jérôme Tchoufack ULg; Lecomte-Beckers, Jacqueline ULg

in Proceedings de la journée de la société belge de microscopie (SBM-BVM), RUCA, UA (2003)

Prior to assessment of inclusions and carbides is the identification of thes particles. The present survey shows how we determine the nature of inclusions and carbides, while using Scanning Electron ... [more ▼]

Prior to assessment of inclusions and carbides is the identification of thes particles. The present survey shows how we determine the nature of inclusions and carbides, while using Scanning Electron Microscopy and Energy Dispersive Spectroscopy with X-Rays. [less ▲]

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See detailMale hypogonadism caused by insolated LH deficiency : From pathology to gene, from gene to physiology
Valdes Socin, Hernan Gonzalo ULg; Salvi, R.; Pralong, F. et al

in The 85th Annual Meeting of the Endocrine Society - Abstract book (2003)

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See detailSimple device for the radiosynthesis of [carbonyl-11C]amides, esters and ketones using carbon-11 monoxide.
Brichard, L.; Del Fiore, G.; Lemaire, Christian ULg et al

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

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See detailUn « Front populaire » en Belgique ? L’inexportable exemple français
Lanneau, Catherine ULg

in Les courants politiques et la Résistance : continuités ou ruptures? (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 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 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 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 detailDiagnosis of TSH secreting pituitary adenomas : A changing scene
Beckers, Albert ULg

in The 85th Annual Meeting of the Endocrine Society - Abstract book (2003)

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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 detailSession hépatique : illustration par une revue de cas cliniques
Amory, Hélène ULg

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

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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 detailRéceptions, études et usages de l’univers rabelaisien aux Refuges protestants
Donneau, Olivier ULg

in Bost, Hubert; Lauriol, Claude (Eds.) Refuge et Désert : l'évolution théologique des huguenots de la Révocation de l’édit de Nantes à la Révolution française, Actes du colloque du Centre d'étude du XVIIIe siècle. Montpellier, 18-19-20 janvier 2001 (2003)

Huguenot Refugees (1685-1750) almost have a monopoly on the image of Rabelais. They find in the works of Rabelais an echo of their own history.

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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 detailInvestigation of the Biological Activity and the Environmental Impact of Tunisian MSW Landfills
Mhiri, F.; Marouani, L.; Benzarti, A. et al

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

This paper presents the results of the investigation of the biological activity that takes place in three municipal solid waste landfills (MSW landfills) situated in different regions of two dry climate ... [more ▼]

This paper presents the results of the investigation of the biological activity that takes place in three municipal solid waste landfills (MSW landfills) situated in different regions of two dry climate in Tunisia. Since the climatic water balance is negative (potential evapotranspiration being 1.5 to 5 times higher than rainfall), it has often been considered that this kind of landfill has neither environmental impact nor efficient biological activity. However, the three landfills revealed a biological activity with biogas often containing more than 60 percent of methane. Indeed, the upper waste layer that was effectively dry (dry weight from 85 to 98%), the core of refuse contained between 35 and 65% of dry matter. In some boreholes, the produced gases periodically expelled leachates like small geysers. Therefore, the results assess that landfill management in countries with dry climate should be considered with adapted technologies, not necessary the same as under temperate or humid climates. [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 detailProduction de sons chez les Carapidae : approche multidisciplinaire
Parmentier, Eric ULg; Gennotte, Vincent ULg; Lagardère, Jean-Paul

Conference (2003)

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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 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 detailGenus Clostridium and diseases
Mainil, Jacques ULg

Conference (2003)

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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 detailFaire mentir les prédictions en 1ère candidature : comment ? Avec quel résultat ? L'opération RESSAC (Résultats d'Epreuves Standardisées au Service de l'Apprentissage en Candis)
Leclercq, Dieudonné ULg; Dupont, Chantal ULg; Detroz, Pascal ULg et al

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 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 detailEvolutionary ecology of paedomorphosis in the Alpine newt Triturus alpestris
Denoël, Mathieu ULg

Conference (2003)

Paedomorphosis, in which individuals retain ancestral characteristics in the adult stage, is widespread in newts and salamanders and is suspected to play an important role in evolution. In some species ... [more ▼]

Paedomorphosis, in which individuals retain ancestral characteristics in the adult stage, is widespread in newts and salamanders and is suspected to play an important role in evolution. In some species, paedomorphosis is facultative with some individuals skipping the metamorphic stage. Dimorphic populations of the Alpine newt inhabit a large variety of aquatic habitats such as permanent lakes and temporary ponds. The aim of this study was to determine the benefits of the alternatives in these different habitats. To this end, I focused on resource partitioning, energy intake, body condition and age structures in different populations composed of the two morphs. In deep lakes, there was a substantial trophic differentiation between morphs. Paedomorphs primarily preyed on plankton whereas metamorphs foraged on terrestrial invertebrates that fell to the water surface. By reducing competition, resource partitioning may contribute to the coexistence of the alternative morphs in heterogeneous habitats. On the contrary, in a small pond, resource use was similar in the two morphs. Maturity is reached earlier in the paedomorphs from this small pond than in metamorphs (progenetic process), favoring then a rapid turn-over of the population, while similar gonadal development was observed in one of the deep lakes (neotenic process). Body condition was generally higher in paedomorphs than in metamorphs in each studied population. These results show that facultative paedomorphosis is adaptive in varied habitats, but that different factors may favor it depending of the characteristics of the environment. Paedomorphic phenotypes can thus be selected in low altitude productive ponds and high altitude oligotrophic lakes. [less ▲]

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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 detailBiomarkers useful in toxicology
Charlier, Corinne ULg

Conference (2003)

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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 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 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 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 detailHeat generation and transfer due to friction and plastic dissipation - a coupled thermomechanical approach
Adam, L.; Ponthot, Jean-Philippe ULg

in Proceedings of HEFAT 2003, 2nd International conference on Heat Transfer, Fluid Mechanics and Thermodynamics (2003)

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See detailDétermination des acides aminés limitants chez le taurillon BBBc recevant une ration à base d'ensilage de maïs
Frand, Xavier; Froidmont, Eric; Beckers, Yves ULg et al

in Rencontres autour des Recherches sur les Ruminants (2003), 10

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See detailFeeding behaviour of weaned pigs fed either pellets or meal: effects of the number of aniamls per feeding place
Laitat, Martine ULg; Vandenheede, Marc ULg; Desiron, Alain et al

in Ferrante, V. (Ed.) Proceedings of the 37th International Congress of the International Society for Applied Ethology (2003)

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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 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 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 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 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 detailInfluence of social and non-social environmental enrichment on the behaviour of caged rabbits.
Vandenheede, Marc ULg; Halloy, D.

in Ferrante, V. (Ed.) Proceedings of the 37th International Congress of the International Society for Applied Ethology (2003)

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See detailSedimentology of the Frasnian carbonate platform of Belgium, Facies and magnetic susceptibility
Da Silva, Anne-Christine ULg; Boulvain, Frédéric ULg

in Abstract book 12th Bathurst meeting of carbonate sedimentologists (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 detailTreating non proportional damping by means of Taylor polynomial approximations
Denoël, Vincent ULg

in Proceedings of the 2003 Extreme Loading Conference (2003)

In order to simplify the resolution of the equation of motion, structural damping is generally supposed to be proportional. Indeed, this coarse and unjustified hypothesis leads to uncoupled equations of ... [more ▼]

In order to simplify the resolution of the equation of motion, structural damping is generally supposed to be proportional. Indeed, this coarse and unjustified hypothesis leads to uncoupled equations of motion in the modal basis. The aerodynamic and concentrated dampings (dash-pots) are accurately characterized by mathematical laws. These are such that the equations of motion are no longer uncoupled in the modal basis. After presenting the usual ways to solve coupled system of equations, the paper focuses on a method based on Taylor series expansions which allows to partially account for the coupling. After developing the equations related to this method, some examples of application are provided. [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 detailSmoothing the TCP rate by learning the delay versus window size dependency
El Khayat, Ibtissam; Leduc, Guy ULg

in Lecture Notes in Computer Science (2003), 2899

We propose TCP-L, an improved version of TCP, equipped with a learning algorithm whose purpose is to avoid probing for additional bandwidth when the network conditions are known to be unfavourable. TCP-L ... [more ▼]

We propose TCP-L, an improved version of TCP, equipped with a learning algorithm whose purpose is to avoid probing for additional bandwidth when the network conditions are known to be unfavourable. TCP-L learns the relationship between its current (average) one-trip delay and its current window size when congestion occurs, leading to packet loss. After the learning phase, TCP-L will only probe for bandwidth by increasing its window if, under the current network conditions (measured by the one-trip delay), this inflated window has not previously created congestion. Simulations show that after the learning phase, TCP-L reaches a much more stable throughput, while remaining TCP-friendly, which makes it usable for a larger class of applications, including some multimedia applications that will benefit from that stability. TCP-L is a simple backward compatible extension of TCP which can thus be deployed progressively. We show that there is a benefit for the Internet to deploy TCP-L, because the overall traffic becomes smoother when the proportion of TCP-L flows increases. Finally, our learning component can also be easily embedded in other unicast or multicast transport protocols. [less ▲]

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See detailStudy of the cap-like gene of Streptomyces coelicolor
Derouaux, Adeline ULg; Titgemeyrer, Fritz; Dusart, Jean 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 detail«Paolo Giovio e Francesco Guicciardini»
Moreno, Paola ULg

in Pasquini, Emilio; Prodi, Paolo (Eds.) Bologna nell’età di Carlo V e di Guicciardini. (2003)

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