References of "Scientific congresses and symposiums"
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See detailClostridia and enterotoxaemia
Mainil, Jacques ULg

Conference (2006)

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See detailThe stability of iron-rich alluaudites in granitic pegmatites : an experimental investigation of the Na-Fe(II)-Fe(III) (+PO4) system
Hatert, Frédéric ULg; Fransolet, André-Mathieu ULg

in Berichte der Deutschen Mineralogischen Gesellschaft : Beihefte zum European Journal of Mineralogy (2006), 18

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

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

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See detailLaryngeal dysfunction after thyroid surgery: diagnostic and treatments
FINCK, Camille ULg

in Acta Chirurgica Belgica (2006), 106

Vocal fold hypomobility after thyroidectomy is a frequent complication of thyroidectomy. Laryngeal nerve paresis or paralysis may present with various symptoms like dysphagia, aspiration, voice alteration ... [more ▼]

Vocal fold hypomobility after thyroidectomy is a frequent complication of thyroidectomy. Laryngeal nerve paresis or paralysis may present with various symptoms like dysphagia, aspiration, voice alteration or dyspnea. Are described: the normal anatomophysiology of the larynx, the symptoms of nerve trauma following thyroidectomy, techniques of thoroughfull laryngeal and voice examination, some clinical entities( unilateral recurrent nerve paralysis, bilateral recurrent nerve paralysis, superior laryngeal nerve paralysis),natural evolution of paralysis, prognosis and management of laryngeal paralysis) [less ▲]

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See detailThe tropical collections of the University of Liège Museum of Zoology: diversity, database and access.
Loneux, Michèle ULg

in Segers, Hendrik; Desmet, P.; Baus (Eds.) Proceedings of the 3rd GBIF Science Symposium, Brussels 18-19 April 2005 - Tropical Biodiversity: Science, Data, Conservation. (2006)

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See detailProtection and maintenance of permanent pastures
Gobin, B.; Brodsky, L.; Tychon, Bernard ULg et al

in Kay, Simon; Sima, Aleksandra; Loudjani, Philippe (Eds.) Proceedings of the 12th MARS PAC Annual Conference, 2006 (2006)

All farmers receiving direct payments are subject to compulsory cross-compliance which includes standards related to the maintenance and protection of permanent pastures. Questionnaire techniques and ... [more ▼]

All farmers receiving direct payments are subject to compulsory cross-compliance which includes standards related to the maintenance and protection of permanent pastures. Questionnaire techniques and spatio-temporal analyses demonstrated that the ratio of permanent pasture area to agricultural land provides a simple tool for monitoring and controlling the protection of permanent pastures at the regional to Member State level. Huge variations in the ratio across Europe were related to the importance of permanent pastures, the interpretation of definitions, sources of information used, differences in calculation, and the presence of protective and/or sensitive zones. Precautionary or complementary measures are in place in most Member States in order to prevent decreases in the ratio. The implementation of GAEC standards related to permanent pastures overlaps with the standard management requirements, national legislation and current agri-environmental programmes. The study advocates the establishment of a comprehensive geo-information platform consisting of a topologically correct inventory of all permanent pasture parcels in a 1:1 geo-referenced relation between IACS and LPIS; ancillary spatially explicit data such as orthophotos, remote sensing images and other thematic geo-databases; and, geodatabases with parcel information compiled for other monitoring purposes such as those within the framework of the Nitrates Directive or 2nd pillar support. [less ▲]

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See detailAdvanced exploitation of ground-based Fourier transform infrared observations for tropospheric studies over Europe: achievements of the UFTIR project
De Mazière, Martine; Vigouroux, Corinne; Blumenstock, Thomas et al

in Geophysical Research Abstracts (2006), 8

Solar absorption measurements using Fourier transform infrared (FTIR) spectrometry carry information about the atmospheric abundances of many constituents, including information about their vertical ... [more ▼]

Solar absorption measurements using Fourier transform infrared (FTIR) spectrometry carry information about the atmospheric abundances of many constituents, including information about their vertical distributions in the troposphere and the stratosphere. Such observations have regularly been made since many years as a contribution to the NDSC (Network for the Detection of Stratospheric Change). They are the only ground-based remote sensing observations available nowadays that carry information about key atmospheric trace species in the free troposphere, among which the most important greenhouse gases. The European UFTIR project (Time series of Upper Free Troposphere observations from a European ground-based FTIR network, http://www.nilu.no/uftir) has focused on maximizing the information content of FTIR long-term monitoring data of some direct and indirect greenhouse gases (CH4, N2O, O3,HCFC-22, and CO and C2H6, respectively). The UFTIR network includes six NDSC stations in Western Europe, covering the polar to subtropical regions. At several stations of the network, the observations span more than a decade. Existing spectral time series have been reanalyzed according to a common optimized retrieval strategy, in order to derive distinct tropospheric and stratospheric abundances of the abovementioned target gases. A bootstrap resampling method has been implemented to evaluate trends of the tropospheric and total burdens of the target gases, including their uncertainties. In parallel, simulations of the target time series have been made with the Oslo CTM2 model: comparisons between the model results and the observations provide valuable information to improve the model, and in particular, to optimize emission estimates that are used as inputs to the model simulations, and to explain the observed trends. The final results of the project will be presented, and ways to proceed will be discussed. [less ▲]

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See detailImpact d’un sport-études sur la vie d’un établissement scolaire
Frédéric, Olivier; Louis, Lionel; Cloes, Marc ULg

in Carlier, Ghislain; Bouthier, Daniel; Bui-Xuân, G. (Eds.) Intervenir en éducation physique et en sport. Recherches actuelles (2006)

Nous nous proposons d’étudier le cas d’un établissement secondaire dans lequel a été créée une section sport-études et d’analyser l’impact social de cette filière d’études dans l’école en question en ... [more ▼]

Nous nous proposons d’étudier le cas d’un établissement secondaire dans lequel a été créée une section sport-études et d’analyser l’impact social de cette filière d’études dans l’école en question en recueillant, auprès des différents acteurs de la structure, des informations concernant les objectifs associés au sport-études, les motifs de participation, les relations entre les différents acteurs du site, la perception du sport-études et la perception du niveau des élèves. Pour d’évidentes raisons de place, nous avons choisi de n’aborder dans cet article que les trois premiers aspects. [less ▲]

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See detailThe role of sleep in the consolidation of emotional memories in humans : a fMRI study
Sterpenich, Virginie; Albouy, Geneviève ULg; Boly, Mélanie ULg et al

Poster (2006)

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See detailInhomogeneous and anisotropic deformation behavior and strain hardening of ultrafine-grained aluminium by ECAP
Poortmans, Stijn; El Houdaigui, Fouad; Habraken, Anne ULg et al

in Zhu, Y. T.; Langdon, T. G.; Horita, Z. (Eds.) et al Proceedings of the Ultrafine Grained Materials IV Conference (2006)

Hot-rolled AA1050 commercial pure aluminum was deformed by ECAP (Equal Channel Angular Pressing) at room temperature following route BC for 8 passes. Mechanical testing at room temperature on both hot ... [more ▼]

Hot-rolled AA1050 commercial pure aluminum was deformed by ECAP (Equal Channel Angular Pressing) at room temperature following route BC for 8 passes. Mechanical testing at room temperature on both hot-rolled aluminum and aluminum after ECAP consisted of uniaxial tension, axisymmetric compression and shear by torsion. The phenomenological Hill’s criterion identified from texture data accounts for the observed tension-compression asymmetry due to ECAP and predicts torsion yielding close to measurements. FE simulations of the compression tests are performed with a Hill model or a Minty micro-macro model and coupled with an isotropic Voce saturation hardening law. These simulations compute the inhomogeneous behavior due to barreling, the observed sample anisotropy and the force-displacement curve. Comparisons of numerical and experiments results provide a first identification of the hardening parameters and the friction coefficient during compression tests. [less ▲]

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See detailObjectifs, méthodes et outils du projet Khartês
Mazziotta, Nicolas ULg

in Mardale, Alexandru; Soufflard, Mélodie; Vecherand, Géraldine (Eds.) 9e Atelier des Doctorants en Linguistique. 17 & 18 octobre 2005 (2006)

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

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

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See detailComparison of noise, hot and cold contrast of eight tomographic camera models.
Seret, Alain ULg; Nguyen, Thibaut

in European Journal of Nuclear Medicine and Molecular Imaging (2006), 33(S2), 282

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See detailCoupled modelling of an excavation in a brittle formation
Collin, Frédéric ULg; Li, Xian Ling; Chambon, René et al

Conference (2006)

This paper is concerned with the coupling effects existing between the mechanical problem and the water diffusion process during an excavation, in relation with the nuclear waste disposal concepts. The ... [more ▼]

This paper is concerned with the coupling effects existing between the mechanical problem and the water diffusion process during an excavation, in relation with the nuclear waste disposal concepts. The hydromechanical coupling effects are first evidenced. Then, the permeability variation with damage is studied. Finally, different kind of flow boundary condition are considered. Their influence on the cavity convergence is highlighted and their effect on strain localisation process as well. [less ▲]

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See detailL’apport des chartes originales antérieures à 1271 conservées au dépôt des Archives de l’État de Liège (Belgique) pour la datation du lexique français
Mazziotta, Nicolas ULg

in Buchi, Eva (Ed.) Actes de la Journée d’étude « Lexicographie historique française : autour de la mise à jour des notices étymolo- giques du Trésor de la langue française informatisé » (Nancy/ATILF, 4 novembre 2005) (2006)

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See detailDifferential effects of hypoxia on étoposide induced apoptosis according to the cancer cell lines
Cosse, Jean-Philippe ULg; Sermeus, Audrey; Vannuvel, Kayleen et al

Poster (2006)

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See detailEffects of long-term population fluctuations in a top predator on invertebrate community composition in Alpine ponds
Wissinger, Scott; Whiteman, Howard; Denoël, Mathieu ULg

Conference (2006)

At our remote study site in central Colorado, the population size of tiger salamanders (Ambystoma tigrinum nebulosum) has fluctuated cyclically over the past 20 years from fewer than 100 to over 5000 ... [more ▼]

At our remote study site in central Colorado, the population size of tiger salamanders (Ambystoma tigrinum nebulosum) has fluctuated cyclically over the past 20 years from fewer than 100 to over 5000 individuals. Comparative data between ponds with and without salamanders, and experimental studies suggest that this species is a keystone predator on benthic and planktonic prey communities. Here we present long-term community data that reveal taxon- and habitat-specific correlations in the population size of benthic and planktonic prey with fluctuations in salamander populations. Changes in the abundance of planktonic, but not benthic invertebrates in temporary habitats were correlated with fluctuations in the abundance of salamanders. In permanent ponds, we observed order-of-magnitude changes in benthic biomass that are negatively correlated with salamander abundance. Among the large-bodied and potentially most vulnerable benthic invertebrates (odonates, caddisflies, beetles, water bugs), several species exhibited negatively coupled cycles, but others fluctuated little or out of phase with changes in salamander abundance. The absence of major shifts in benthic community composition in permanent ponds is probably a result of conflicting predation pressures exerted by different year classes of salamanders. Salamander gut samples suggest that ontogenetic shifts in diet might explain why cyclic fluctuations in the abundance of this predator had only minor impacts on benthic community composition despite having major effects on invertebrate biomass. [less ▲]

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See detailTopology optimization of electromechanical microsystems against pull-in voltage
Lemaire, Etienne ULg; Duysinx, Pierre ULg; Rochus, Véronique ULg et al

(2006)

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

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

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See detailHIV viraemic patients downregulate CD94/NKG2A inhibitory receptors on NK as well as CD8 T cells in comparison with aviraemic counterparts
Zeddou, Mustapha; Rahmouni, Souad ULg; VANDAMME, Arnaud ULg et al

Poster (2006)

Background: The CD94/NKG2 heterodimer is a C-type lectin receptor formed by the association of CD94 and one of the NKG2 molecules (namely NKG2A, -B, -C or –E). The interaction of CD94/NKG2A with non ... [more ▼]

Background: The CD94/NKG2 heterodimer is a C-type lectin receptor formed by the association of CD94 and one of the NKG2 molecules (namely NKG2A, -B, -C or –E). The interaction of CD94/NKG2A with non classical HLA-E molecules delivers inhibitory signals. CD94/NKG2A is normally expressed on most NK cells whereas less than 5% of peripheral resting CD8+ T cells are positive. Although several reports have clearly shown an upregulation of CD94 on CD8 T cells in HIV infection, the simultaneous expression of both subunits of the inhibitory receptor on NK and T cells and its relation with viral load is largely unknown. Methods: PBLs from 30 HIV-infected patients (16 viraemic and 14 aviraemic under HAART) and 18 healthy volunteers were analysed by flow cytometry after staining with the following monoclonal antibodies (Percp-conjugated anti-CD8, FITC-conjugated anti-CD3, APC-conjugated anti-CD94, PE-conjugated anti-NKG2A). Results: The proportion of CD8 T cells expressing the CD94/NKG2A inhibitory receptor was not significantly increased in HIV-infected patients (5.68 ± 3.72%) in comparison with non-infected controls (4.90±2.84%). Interestingly, patients with viral load < 50 copies/ml had a higher proportion of CD8 T cells expressing the inhibitory receptor (7.15 ± 3.63%) than patients with HIV viraemia (4.40 ± 3.40%), p= 0.041. The same pattern was observed for NK cells and was even more pronounced. In aviraemic individuals, 61.75 ± 20.39% of NK cells expressed the inhibitory receptor vs 42.88 ± 26.38% in viraemic patients. The proportion of CD94/NKG2A positive cells was correlated between NK and CD8 T cell subsets (p=0.0351) but there was no correlation with absolute or relative CD4 counts. Conclusions: Our results suggest that chronic stimulation with HIV antigens in viraemic patients could lead to decreased rather than increased expression of inhibitory receptors on NK and CD8 T cells. This could contribute to the abnormal activation of the immune system associated with advanced HIV disease. [less ▲]

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See detailObservations of Comet 73P/SW3 close to its closest approach to the Earth.
Tozzi, G. P.; Bagnulo, S.; Boehnhardt, H. et al

in European Planetary Science Congress 2006 (2006)

In May 2006 comet 73P/SW3 passed at less than 0.1 AU from Earth providing us an unique opportunity for high spatial resolution study of its coma. This event was expected to be particularly interesting ... [more ▼]

In May 2006 comet 73P/SW3 passed at less than 0.1 AU from Earth providing us an unique opportunity for high spatial resolution study of its coma. This event was expected to be particularly interesting because the comet had broken apart in 3-4 fragments in 1996. The 2006 apparition has been even more interesting because the fragments produced in 1996, when approaching the Sun, were continuously breaking apart. This process resulted in many small sub-fragments and in the injection in the coma of fresh material, coming from the interior of the nuclei, giving the possibility to study this uncontaminated material. The breaking fragments have been observed at ESO in the visible and near-IR with the aim of analyzing this fresh solid component of the coma in search of possible presence of organic solids. In the presentation we will report preliminary results of this campaign. [less ▲]

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

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

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See detailEquine oesophageal obstruction : a retrospective study on 143 cases
Seguin, A; Peters, F; Lopez, D et al

in Proceedings of the 45th Congress of the British Equine Veterinary Association (2006)

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See detailPlasminogen activator inhibitor type I (PAI-1) controls bone marrow-dependent and independent vascularization
Jost, M.; Maillard, Catherine ULg; Lambert, Vincent ULg et al

in Acta Clinica Belgica (2006), 61(2, MAR-APR), 87

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

in European Planetary Science Congress 2006 (2006)

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

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

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See detailFonctions affines par morceaux : une modélisation de la pratique des financiers
Bair, Jacques ULg; Henry, Valérie ULg

in Justens, Daniel (Ed.) Mathématiques concrètes (2006)

Nous montrons que les pratiques des financiers font apparaître tout naturellement des fonctions affines par morceaux.

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

in Proceedings of the ICMS Conference (2006)

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

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

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See detailConceptual model of hydrogeological information for a GIS-based decision support system of artificial recharge in semi-arid regions
Wojda, Piotr; Gogu, Constantin Radu; Brouyère, Serge ULg

in Cox, S.; Laxton, J. (Eds.) Quantitative Geology from multiple sources: Delivering geoscience information through open web standards (2006)

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

Conference (2006)

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See detailAuthentizität versus Fiktionalität – Grenzen des Realismus in Günter Grass' Novelle „Im Krebsgang“
Pontzen, Alexandra ULg

in Roland, Hubert; Fabry, Geneviève (Eds.) Les frontières du réalisme dans la littérature narrative du 20e siècle/ The Borders of Realism in 20th Century Narrative Literature (2006)

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See detailL’injustice de la responsabilisation
Andre, Géraldine ULg

Conference (2006)

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See detailTerritorial information, themes, indicators and sources
Devillet, Guénaël ULg; Chen, D.

in Acts of International Conference of Territorial Intelligence (2006)

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See detailAndrogens regulation of the ERBB1 and ERBB2 oncogene expression in human prostate cancer cells
Pignon, Jean-Christophe ULg; Delacroix, Laurence; Waltregny, David ULg et al

in Acta Clinica Belgica (2006), 61(2, MAR-APR), 95-95

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

Poster (2006)

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

in International Journal of Developmental Neuroscience (2006), 24

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See detailA Complete Open-Source Solution for Electromagnetic Field Computation
Geuzaine, Christophe ULg; Dular, Patrick ULg; Remacle, J.-F.

in Proceedings of the 12th IEEE Conference on Electromagnetic Field Computation, CEFC 2006 (2006)

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See detailMitochondrial UCPs: New insights into regulation and impact
Sluse, Francis ULg; Jarmuszkiewicz, Wieslawa; Navet, Rachel ULg et al

in Biochimica et Biophysica Acta-Bioenergetics (2006), 1757(5-6, Suppl 1), 101

Uncoupling proteins (UCPs) are mitochondrial inner membrane proteins sustaining an inducible proton conductance. They weaken the proton electrochemical gradient built up by the mitochondrial respiratory ... [more ▼]

Uncoupling proteins (UCPs) are mitochondrial inner membrane proteins sustaining an inducible proton conductance. They weaken the proton electrochemical gradient built up by the mitochondrial respiratory chain. Brown fat UCP1 sustains a free fatty acid (FA)-induced purine nucleotide (PN)-inhibited proton conductance. Inhibition of the proton conductance by PN has been considered as a diagnostic of UCP activity. However, conflicting results have been obtained in isolated mitochondria for UCP homologues (i.e., UCP2, UCP3, plant UCP, and protist UCP) where the FFA-activated proton conductance is poorly sensitive to PN under resting respiration conditions. Our recent work clearly indicates that the membranous coenzyme Q, through its redox state, represents a regulator of the inhibition by PN of FFA-activated UCP1 homologues under phosphorylating respiration conditions. Several physiological roles of UCPs have been suggested, including a control of the cellular energy balance as well as the preventive action against oxidative stress. In this paper, we discuss new information emerging from comparative proteomics about the impact of UCPs on mitochondrial physiology, when recombinant UCP1 is expressed in yeast and when UCP2 is over-expressed in hepatic mitochondria during steatosis [less ▲]

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See detailInvestigation of factors influencing levels of trace metals using stable isotope analysis.
Bustamante, Paco; Das, Krishna ULg; Caurant, Florence

Poster (2006)

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

Conference (2006)

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

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

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

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

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See detailTolerance study in broiler chickens after the oral administration of doxycycline with the drinking water
Cambier, Carole ULg; Marlier, Didier ULg; De Busser, J

in Journal of Veterinary Pharmacology and Therapeutics (2006)

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See detailMechanisms of cohort suppression and population fluctuation in tiger salamanders
Whiteman, Howard; Wissinger, Scott; Denoël, Mathieu ULg

Conference (2006)

The mechanisms underlying population fluctuation have been well studied in mammals and insects but less research has focused on amphibians. Yet, the current global decline of amphibians equires that we ... [more ▼]

The mechanisms underlying population fluctuation have been well studied in mammals and insects but less research has focused on amphibians. Yet, the current global decline of amphibians equires that we understand these mechanisms, and be able to distinguish between anthropogenically induced declines and natural population fluctuations. We have followed a marked population of the Arizona tiger salamander, Ambystoma tigrinum nebulosum, for over 16 years during which time the population has completed two “boom and bust” cycles, generated by a dominant cohort that appears to suppress larval recruitment until it senesces. We tested two hypotheses for this suppression, cannibalism and resource depression, using a series of meso- and microcosm experiments. We found significant lethal and sublethal (behavior, diet, growth rates) effects of cannibalism by large larvae and paedomorphic adults on hatchling and 1st-year larvae, suggesting that both cannibalism and the threat of cannibalism are important in cohort suppression. Resource depression experiments revealed that paedomorphic adults did not affect larval survival, diet, or growth, despite reduced prey densities, because paedomorphs mainly reduced large bodied prey, whereas hatchlings fed primarily on smaller benthic and zooplanktonic invertebrates. Future experiments will determine how hatchlings are impacted by boom cohorts that are more similar in size and diet. Our results lend insight into the mechanisms underlying fluctuations in this population, and suggest that a better understanding of natural population fluctuations will aid amphibian conservation efforts. [less ▲]

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See detailEtude écopathologique des facteurs de risque des mammites dans les élevages laitiers en Wallonie
Delfosse, C.; Froidmont, E.; Curnel, Y. et al

Poster (2006)

La mammite a de multiples origines et est souvent de type subclinique, rendant contrôle et surveillance difficiles. La majorité des études relatives aux mammites se caractérise par une approche ... [more ▼]

La mammite a de multiples origines et est souvent de type subclinique, rendant contrôle et surveillance difficiles. La majorité des études relatives aux mammites se caractérise par une approche individuelle. Le cadre expérimental restreint de celles-ci ne permet pas une interprétation précise des observations, à la suite du nombre limité de facteurs étudiés. L’approche choisie pour cette étude se veut globale et implique un grand nombre d’exploitations. Elle a pour objectifs d’identifier et de hiérarchiser, au travers d’une enquête, les caractéristiques générales de traite et les conditions environnementales des élevages laitiers influençant le statut sanitaire du pis [less ▲]

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See detailIn vitro transport studies of nifedipine nanoparticles across Caco-2/HT29- 5M21 cultures and co-cultures
Hecq, Julien; Nollevaux, Géraldine; Deleers, M. et al

Poster (2006)

Detailed reference viewed: 42 (6 ULg)
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See detailImpact of Prosthesis-Patient Mismatch on Survival following Mitral Valve Replacement.
Magne, Julien ULg; Mathieu, P; Dumesnil, JG et al

Conference (2006)

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See detailCurrent thinking about Jupiter's magnetic anomaly
Grodent, Denis ULg; Gérard, Jean-Claude ULg; Gustin, Jacques ULg et al

Conference (2006)

Repeated imaging of Jupiter's aurora has shown that the northern main oval has a distorted 'kidney bean' shape in the general range of 90-150o System III longitude, which appears unchanged since 1994 ... [more ▼]

Repeated imaging of Jupiter's aurora has shown that the northern main oval has a distorted 'kidney bean' shape in the general range of 90-150o System III longitude, which appears unchanged since 1994. While it is more difficult to observe the conjugate regions in the southern aurora, no corresponding distortion appears in the south. Recent improved accuracy in locating the auroral footprint emission of Io has provided new information about the geometry of Jupiter's magnetic field in this and other areas. The persistent pattern of the main oval implies a disturbance of the local magnetic field, and the increased latitudinal separation of the locus of the Io footprint from the main oval implies a locally weaker field strength. The most recent images obtained with the Hubble Space Telescope Advance Camera for Surveys (ACS) allow us to complement previous observations with the location of the auroral footprints of Io, Europa, and Ganymede in the region of interest. Their footpaths vary in parallel and form a kink in the 90-150° S3 sector which strongly suggests the presence of a magnetic anomaly in this region. [less ▲]

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See detailEffect of cross country on plasma levels of myeloperoxidase in saddle ponies
Art, Tatiana ULg; Franck, Thierry ULg; Gangl, M. et al

in Abstracts book of iceep (2006)

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See detailNumerical simulation of blaststructure interaction
Noels, Ludovic ULg; Radovitzky, Raul

Conference (2006)

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

in Organohalogen Compounds (2006), 68

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See detailLittérature populaire et culture de masse en Belgique dans les années 1930. Jean Ray, Georges Simenon, Hergé
Denis, Benoît ULg

in Mollier, Jean-Yves; Sirinelli, Jean-François; Vallotton, François (Eds.) Culture de masse et culture médiatique en Europe et dans les Amériques. 1860-1940 (2006)

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

Conference (2006)

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See detailAlimentation et produits locaux
Duquesne, Brigitte ULg

Conference (2006)

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See detailSecondary data value for geostatistical estimation of flow and transport parameters in low-permeability media
Huysmans; Dassargues, Alain ULg

in Stauffer, Fr.; Dassargues, Alain (Eds.) Quantitative Geology from Multiple Sources: S10 Use of multiple sources in conditioning/calibrating groundwater flow and transport models (2006)

This study investigates the relative data value of different types of secondaryinformation to estimate the flow and transport parameters in low-permeability media. Data from four boreholes in two ... [more ▼]

This study investigates the relative data value of different types of secondaryinformation to estimate the flow and transport parameters in low-permeability media. Data from four boreholes in two different clay formations are analyzed. Cross-validation is used to estimate the relevance of the different types of secondary data. The flow and transport parameters (hydraulic conductivity, diffusion coefficient and diffusion accessible porosity) are first estimated by kriging using primary information only and then estimated by co-kriging using primary information and one type of secondary information (grain size, gamma ray and resistivity). The kriging residuals, i.e. the difference between the estimated and the measuredvalues, of the different kriging and co-kriging variants are compared to evaluate the relevance of each type of secondary information. This analysis shows that in the different clays and the different boreholes, different types of secondary information result in the largest improvement of the estimates of the flow and transport parameters. It is not possible to determine the "best" type of secondary information for improving the estimation of the flow and transport parameters of low-permeability media. This probably depends on local factors such as the quality of the loggings and the amount of nearby primary and secondary data. [less ▲]

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See detailImplementation of marker-assisted selection: practical lessons from dairy cattle
Boichard, D.; Fritz, S.; Rossignol, M. N. et al

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

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See detail'Do plant species and climate warming influence nitrification and ammonia oxidiser community structure
Malchair, Sandrine ULg; Carnol, Monique ULg

in 11th International symposium on microbial ecology (ISME-11) 'The Hidden Powers – Microbial Communities in Action', Vienna, Austria, August 20-25, 2006, Book of Abstracts (2006)

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See detailExact validation of breeding value prediction software
Leclerc, H.; Druet, Tom ULg; Ducrocq, V.

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

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See detailEvaluation de l’efficacité d’un module d’enseignement à distance centré sur l’analyse de tâche et l’émission de feed-back
Lenzen, Benoît; Gustin, Frédéric; Cloes, Marc ULg

in Carlier, Ghislain; Bouthier, Daniel; Bui-Xuân, G. (Eds.) Intervenir en éducation physique et en sport. Recherches actuelles (2006)

L’importance du feedback dans la relation pédagogique d’enseignement a été mise en évidence dans de nombreuses recherches de type « processus-produit » et les mécanismes relatifs à son émission ont par ... [more ▼]

L’importance du feedback dans la relation pédagogique d’enseignement a été mise en évidence dans de nombreuses recherches de type « processus-produit » et les mécanismes relatifs à son émission ont par ailleurs été bien définis. La question qui se pose est la suivante : Comment intervenir dans la formation initiale des enseignants en éducation physique et des entraîneurs afin de développer chez eux l’aptitude à corriger les performances motrices des apprenants ? [less ▲]

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See detailL'Interculturalité a-t-elle un avenir ?
Defays, Jean-Marc ULg

in Dufays, Jean-Louis; Collès, Luc; Thyrion, Francine (Eds.) Quelle didactique de l'interculturel dans les nouveaux contextes du FLE/S? (2006)

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

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

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

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

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

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

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

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

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See detailInvestigating a bottom-up approach for extracting domain ontologies from urban databases
Chaidron, Christophe; Teller, Jacques ULg; Billen, Roland ULg

in Proceedings of the 1st Workshop of COST Action C21 Towntology (2006)

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See detailDifférents traitements de la graine de lin dans le cadre de l'engraissement de vaches de réforme.
Cabaraux, Jean-François ULg; Dotreppe, Olivier ULg; Dufrasne, Isabelle ULg et al

in 13ième Rencontres autour des Recherches sur les Ruminants (2006)

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See detailEEG inverse problem and priors in a brain-computer interface
Noirhomme, Quentin ULg; Macq, B.

in Proceedings of the 11-th International Conference Speech and Computer, SPECOM'2006 (2006)

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See detailMatériel et méthode de la constitution des valeurs de référence
WANG, François-Charles ULg

in Neurophysiologie Clinique = Clinical Neurophysiology (2006)

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See detailThe effects of attentional level and test format on the resistance to false memories.
Dehon, Hedwige ULg; Lampinen, James Michael

Poster (2006)

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See detailUsing Cellular automata for the analysis of the dynamics of a landscape unit: discussions about the study of a suburban area in the East of Liège
Schmitz, Serge ULg; Schepers, Jean-François

in European rural future: landscape as an interface : Berlin/Brandenburg, 4-9 Septembre 2006 (2006)

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See detailInfluence of operating parameters on nitrite
Kouakou, Edouard; Salmon, Thierry ULg; Marchot, Pierre ULg et al

in Proceeding of the International Symposium on Environmental Biotechnology (2006)

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See detailLa sélection des antagonistes de penicillium expensum et de botrytis cinerea, deux parasites de post-recolte des pommes
Achbani, E. H.; Mounir, R.; El Jaafari, S. et al

in AFPP (2006)

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See detailAnalytic properties of unitarization schemes
Selyugin, Oleg Viktorovich; Cudell, Jean-René ULg

in Czechoslovak Journal of Physics (2006)

The analytic properties of the elastic hadron scattering amplitude are examined in the impact parameter representation at high energies. Different unitarization procedures and the corresponding non-linear ... [more ▼]

The analytic properties of the elastic hadron scattering amplitude are examined in the impact parameter representation at high energies. Different unitarization procedures and the corresponding non-linear equations are presented. Several unitarisation schemes are presented. They lead to almost identical results at the LHC. [less ▲]

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See detailQue peut dire la littérature en Belgique ? Autonomie de la littérature et procès d'écrivains, de Camille Lemonnier à Pierre Mertens
Denis, Benoît ULg

in Durand, Pascal; Hébert, Pierre-Philippe; Mollier, Jean-Yves (Eds.) et al La Censure de l’imprimé. Belgique, France, Québec et Suisse romande. XIXe-XXe siècles (2006)

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See detailLa céramique, témoin privilégié des aspects sociaux et culturels du site mérovingien de Sclayn
Van Wersch, Line ULg

in Husi, Philippe; Hincker, Vincent (Eds.) Actes colloque international, La céramique du Haut Moyen Âge (Ve-Xe siècles) dans le nord-ouest de l’Europe. Bilan et perspectives dix ans après le colloque d’Outreau (2006)

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See detailFirst practical implementation of the component method to joints in tubular construction
Weynand, K.; Busse, E.; Jaspart, Jean-Pierre ULg

in Proceedings of the 11th International Symposium on Tubular Structures (2006)

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See detailEen contrast in contrastief taalonderzoek
Hiligsmann, Philippe; Rasier, Laurent ULg

Conference (2006)

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See detailElasto-plastic material parameter identification by inverse methods: sensitivity matrix calculation
Cooreman, Steven; Bouffioux, Chantal ULg; Lecompte, David et al

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

Inverse methods offer a powerful tool for the determination of the elasto-plastic material properties. Contrary to standard tests, these methods can deal with heterogeneous stress and strain-fields which ... [more ▼]

Inverse methods offer a powerful tool for the determination of the elasto-plastic material properties. Contrary to standard tests, these methods can deal with heterogeneous stress and strain-fields which have a larger information contents and hence allow the simultaneous identification of several material parameters. Moreover, it is expected that the obtained material parameters are more accurate, since these heterogeneous deformation fields are much closer to those occurring in real (metal) forming operations. The principle of the inverse method for the identification of material parameters presented in this paper is to compare an experimentally measured strain field to that computed by a Finite Element (FE) model. The material parameters in the FE model are iteratively tuned in such a way that both strain fields match each other as close as possible. One of the building blocks in this identification procedure is the updating algorithm for the material parameters in the FE model. The key problem of this updating algorithm is the determination of the sensitivity matrix, which expresses the sensitivities of the strains with respect to the material parameters. This paper presents an analytical method for the calculation of this sensitivity matrix in case of simple tensile tests. [less ▲]

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See detailRelationship between surface characteristics and superficial cohesion of concrete
Garbacz, Andrzej; Gorka, M.; Courard, Luc ULg

in Beushausen, H.; Dehn, F.; Alexander, M. G. (Eds.) Concrete Repair, Rehabilitation and Retrofitting (2006)

Existing concrete surfaces have to be prepared before the application of a new layer. Different surface treatments (grinding, sandblasting, shotblasting, hand- and mechanical milling) have been performed ... [more ▼]

Existing concrete surfaces have to be prepared before the application of a new layer. Different surface treatments (grinding, sandblasting, shotblasting, hand- and mechanical milling) have been performed and the quality of the preparation has been established on the base of three main parameters: surface roughness, superficial concrete microcracking and adhesion. Cracks have been systematically observed, in relation with surface treatment by means of Scanning Electron Microscope and Light Microscope. Finally, a repair mortar, with or without bond coat, has been applied on the concrete substrates and adhesion has been measured. Analysis of results clearly show the effect of roughness on adhesion in the case where no bond coat is used, the influence of the surface treatment on the waviness shape of the profile and the presence of microcracks in the near-to-surface layer, which is related to failure type. [less ▲]

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See detailCytokine and chemokine expression in canine sino-nasal aspergillosis and idiopathic lymphoplasmacytic rhinosinusitis.
Peeters, Dominique ULg; Peters, I. R.; Helps, C. et al

in Proceedings of the 16th Annual Congress of the ECVIM-CA (2006)

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See detailAn astrobiology QUIZZ: How to recognize extraterrestrial life?
Vandenabeele-Trambouze, O.; Alekina, I.; Benzerara, K. et al

Conference (2006)

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See detailAutomatic learning of sequential decision strategies for dynamic security assessment and control
Wehenkel, Louis ULg; Glavic, Mevludin; Geurts, Pierre ULg et al

in Proceedings of the IEEE Power Engineering Society General Meeting 2006 (2006)

This paper proposes to formulate security control as a sequential decision making problem and presents new developments in automatic learning of sequential decision making strategies from simulations and ... [more ▼]

This paper proposes to formulate security control as a sequential decision making problem and presents new developments in automatic learning of sequential decision making strategies from simulations and/or information collected from real-life system measurements. The exploitation of these methods for the design of decision making strategies and control policies in the context of preventive and emergency mode dynamic security assessment and control is discussed and further opportunities for research in this area are highlighted. [less ▲]

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See detailThe use of morphological indicators and genetic algorithms in structural optimization considering stiffness constraints
Van Den Bergh, Thomas; Verbeeck, Ben; De Wilde, Patrick et al

(2006)

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See detailOutcome of patients with hepatocellular carcinoma listed for liver transplantation within the eurotransplant allocation system
Adler, M.; Lerut, J.; Starkel, P. et al

in Journal of Hepatology (2006), 44(Suppl. 2), 14

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See detailIs one's own face really harder to ignore?
Devue, Christel ULg; Jamaer, Nathalie; Brédart, Serge ULg

Conference (2006)

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