References of "Scientific congresses and symposiums"
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See detailHeat recovery and reversible heat pumping potentials in non-residential buildings
Bertagnolio, Stéphane ULg; Lebrun, Jean; Andre, Philippe ULg et al

Conference (2008, September)

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See detailSensibilité aux variations climatiques d'un bassin à forts enjeux - Le cas de la Garonne
Dupeyrat, Anne; Agosta, Cécile ULg; Sauquet, Eric et al

in IWRA 13th World Water Congress (2008, September)

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See detailPore size distribution of baker’s yeast evaluation using x-ray micro-tomography
Debaste, Frédéric; Léonard, Angélique ULg; Halloin, Véronique et al

Poster (2008, September)

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See detailActualisation du Résumé Infirmier Minimum en Belgique, du concept à l’implémentation.
THONON, Olivier ULg; VAN DEN HEEDE, Koen; GILLAIN, Daniel ULg et al

in Actes de la 4ème conférence francophone en Gestion et Ingénierie des SystèmEs Hospitaliers - GISEH (2008, September)

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See detailMeasuring Time Delays in Gravitational Lenses
Eulaers, Eva ULg; Magain, Pierre ULg; Sohy, Sandrine ULg et al

Poster (2008, September)

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See detailTests and design of stainless steel lipped channel section columns
Rossi, Barbara ULg

Conference (2008, September)

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See detailRoof storage systems: Modelling and performance’s comparison
Beckers, Eléonore ULg; Degre, Aurore ULg

Poster (2008, September)

Rainwater runoff problems have become critical in large cities because of the increasing imperviousness of surfaces. Best practices to manage urban runoff improve water infiltration and evaporation ... [more ▼]

Rainwater runoff problems have become critical in large cities because of the increasing imperviousness of surfaces. Best practices to manage urban runoff improve water infiltration and evaporation through green areas establishment and, therefore, natural hydrological cycle restoration. The aim is to evaluate rainwater runoff from different types of roof storage systems and to conclude about their own interests to manage urban runoff production. [less ▲]

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See detailDevelopment and validation of a reference material for food microbiology using Bacillus cereus spores
Abel Massih, Marleen; Debast, Laurent; Planchon, Viviane et al

in Proceedings of the Thirteenth Conference on Food Microbiology (2008, September)

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See detailGeneralized life and motion configurations reasoning model
Hallot, Pierre ULg; Billen, Roland ULg

Conference (2008, September)

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See detailPathology of influenza virus H5N1 infection in resistant and susceptible laboratory mice.
Garigliany, Mutien-Marie ULg; Cloquette, Karine; Leroy, Michaël et al

Conference (2008, September)

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See detailLuminescence dating of architectural ceramics from an early medieval abbey: the St-Philbert intercomparison (Loire Atlantique, France)
Guibert, Pierre; Bailiff, Ian; Blain, Sophie ULg et al

Conference (2008, September)

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See detailClinical efficacy of intrasinusal administration of bifonazole cream through perendoscopically placed catheters alone or in combination with enilconazole irrigation in canine sinonasal aspergillosis.
Billen, Frédéric ULg; Guieu, Liz-Valérie; Bernaerts, Frédérique et al

in Proceedings of the 18th ECVIM-CA Congress (2008, September)

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See detailEffect of pre-emptive Vagus Nerve Stimulation on cortical spreading depression in rat
Multon, Sylvie ULg; Prodanov, D.; Chauvel, Virginie ULg et al

Poster (2008, September)

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See detailStudy of the hemispheric difference in observed NO2 trends
Kreher, K.; Liley, J.B.; Johnston, P.V. et al

Poster (2008, September)

Detailed reference viewed: 13 (0 ULg)
See detailInvited review talk - Asteroseismology of B stars
Thoul, Anne ULg

Conference (2008, September)

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See detailDevelopment of membranar effects in frame beams: experimental and analytical investigations
Demonceau, Jean-François ULg; Luu, Nguyen Nam Hai; Jaspart, Jean-Pierre ULg

in EUROSTEEL 2008, 5th European Conference on Steel and Composite Structures (2008, September)

Recent events such as natural catastrophes or terrorism attacks have highlighted the necessity to ensure the structural integrity of buildings under exceptional events. According to Eurocodes and some ... [more ▼]

Recent events such as natural catastrophes or terrorism attacks have highlighted the necessity to ensure the structural integrity of buildings under exceptional events. According to Eurocodes and some different other national design codes, the structural integrity of civil engineering structures should be ensured through appropriate measures but, in most of the cases, no precise practical guidelines on how to achieve this goal are provided. A European RFCS project called “Robust structures by joint ductility” has been set up in 2004, for three years, with the aim to provide requirements and practical guidelines allowing to ensure the structural integrity of steel and composite structures under exceptional event through an appropriate robustness. The investigations performed at Liège University, as part of this European project, are mainly dedicated to the exceptional event “Loss of a column in a steel or steel-concrete composite building frame”; the main objective is to develop a simplified analytical procedure to predict the frame response further to a column loss. The development of this simplified procedure is detailed in two complementary PhD theses: the thesis of J.-F. Demonceau and the thesis of H.N.N. Luu. The present paper describes experimental and analytical studies carried out within the first PhD thesis. In particular, a simplified analytical method allowing the prediction of the frame response with account of the membranar effects is described. [less ▲]

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See detailNi/SiO2 Catalyst Preparation Studies using SBA-15 as a Model Support and quantitative Electron Tomography Characterisation
de Jongh, Petra; Friedrich, Heiner; Gommes, Cédric ULg et al

Poster (2008, September)

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See detailRecent developments on composite connections: behaviour of joints subjected to sagging bending moments and presentation of a free design dedicated software
Demonceau, Jean-François ULg; Jaspart, Jean-Pierre ULg; Klinkhammer, Ralf et al

in EUROSTEEL 2008, 5th European Conference on Steel and Composite Structures (2008, September)

In Eurocode 4, design rules are suggested for the evaluation of the mechanical properties of structural steel-concrete composite joints (rotational stiffness, resistance and ductility). These rules cover ... [more ▼]

In Eurocode 4, design rules are suggested for the evaluation of the mechanical properties of structural steel-concrete composite joints (rotational stiffness, resistance and ductility). These rules cover situations where the joints are subjected to moments and shear forces, but in hogging regions only. Recently, researches have been conducted on the behaviour of composite joints subjected to sagging bending moments and to combined bending moments and axial loads, types of loadings which appear in composite frame further to a column loss. In the present paper, recent developments allowing to extend the EC4 design rules to joints in sagging regions (loading which can occur, for instance, in sway composite frames) are presented and the proposed method is validated through comparisons with experimental test results. Also, an easy-to-apply design software (which will be freely available), applying the rules recommended in Eurocode 4 in a safe and easy way, is described. [less ▲]

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See detailPerturbation finite element method for the analysis of earthing systems with vertical rods
V Sabariego, Ruth ULg; Ferreira da Luz, Mauricio V.; Nsekere, Jean-Pierre et al

in Proceedings of MOMAG2008 (2008, September)

This paper deals with the electrokinetic modeling of earthing systems by means of a sub-domain perturbation finite element technique. An axisymmetric problem is solved for each single grounding rod. Its ... [more ▼]

This paper deals with the electrokinetic modeling of earthing systems by means of a sub-domain perturbation finite element technique. An axisymmetric problem is solved for each single grounding rod. Its solution must then be corrected by taking into account the influence of the other rods. The electric scalar potential is transferred from one problem to the other through projections between meshes. An inherently 3D problem can thus be solved as a succession of 2D sub-problems, what significantly speeds up the solution and enables to tackle complicated grounding systems. The method is validated by means of both analytical formulas and 3D computations. [less ▲]

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See detailDesign of mechatronic systems with variable mechanical configuration
Da Silva, Maira; Bruls, Olivier ULg; Desmet, Wim et al

in Proceedings of the 9th International Conference on Motion and Vibration Control (MOVIC) (2008, September)

Some mechatronic systems have different spatial configurations or operation positions, and, as a consequence, their dynamic behavior, described by their most significant eigenfrequencies and mode-shapes ... [more ▼]

Some mechatronic systems have different spatial configurations or operation positions, and, as a consequence, their dynamic behavior, described by their most significant eigenfrequencies and mode-shapes, may vary in the configuration space. This inevitably affects the performance and the stability of the control system. Regarding the design of mechatronic systems with variable configuration, two main issues are treated in this paper: (i) the derivation of a parametric model able to capture the varying dynamics and the control actions, (ii) the integrated design of the structure and the controller. To cope with these issues, a parametric model is derived using a flexible multibody system technique based on the finite element method. A global modal parameterization is applied for model-order reduction, yielding a concise description of the flexible multibody model. A linear parameter varying controller is derived via interpolation of local controllers for the reduced models. This methodology is applied to a pick-and-place assembly robot with a gripper carried by a flexible beam. Eventually, design tradeoffs are evaluated considering the performance of the active system for different structural configurations. [less ▲]

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See detailNorovirus and sapovirus in pigs in Belgium
Mauroy, Axel ULg; Scipioni, Alexandra; Mathijs, Elisabeth et al

Poster (2008, September)

Noroviruses and sapoviruses belong to the norovirus and sapovirus genera respectively in the family Caliciviridae. These positive single stranded RNA viruses are known as common gastroenteritis agents in ... [more ▼]

Noroviruses and sapoviruses belong to the norovirus and sapovirus genera respectively in the family Caliciviridae. These positive single stranded RNA viruses are known as common gastroenteritis agents in human and have been also identified in other species like swine (1). Porcine noroviruses and sapoviruses have been to date poorly detected in European countries. Porcine sapovirus have been only reported in 2 European countries, namely Hungary and Italy (2; 3) and porcine norovirus sequences were detected in The Netherlands (4). In this study, both porcine noroviruses and sapoviruses were detected in swine stools showing their circulation in Belgian premises. Seven samples gave positive amplicons. Using BLAST and phylogenetic analysis, two porcine norovirus strains were identified and are genetically related to genotype 19 strains. Five samples contained porcine sapoviruses and are genetically related to the Porcine Enteric Calicivirus Cowden and newly described porcine strains. Sapovirus sequences were mainly detected in stool of piglets (less than 8 weeks old). Only one sequence was detected in an older pig (16-20 weeks). Norovirus sequences were detected in stools of fattening pigs (16-20 weeks). Neither sapovirus nor norovirus detected sequences could be associated with clinical signs of gastroenteritis. In conclusion, the circulation of both porcine sapovirus and norovirus was shown in Belgium, extending their European distribution. Given uncertainties on the zoonotic risk, countries where swine and humans are relatively closed should develop surveillance programs where both human and animal calicivirus strains are screened in gastroenteritis outbreaks, wastewaters and veterinary diagnostic samples. [less ▲]

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See detailNew simplified analytical method for the prediction of global stability of composite sway frames
Ly, Dong Phuong Lam ULg; Demonceau, Jean-François ULg; Jaspart, Jean-Pierre ULg

in EUROSTEEL 2008, 5th European Conference on Steel and Composite Structures (2008, September)

In the last years, the construction of taller composite buildings and larger composite industrial halls without wind bracing systems is susceptible to make global instability a relevant failure mode. This ... [more ▼]

In the last years, the construction of taller composite buildings and larger composite industrial halls without wind bracing systems is susceptible to make global instability a relevant failure mode. This one is not yet covered by EC4 [2]. This paper reflects investigations carried out of Liege University on this topic. In particular, an innovative simplified analytical method to predict the ultimate loading factor and the associated collapse mode of composite frames is derived. [less ▲]

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See detailDC magnetron sputtering deposition of titanium oxide nanoparticles : influence
Dreesen, Laurent ULg; Cecchet, Francesca; Lucas, Stéphane

Conference (2008, September)

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See detailRôle de la forme polysialylée de NCAM dans l'activité des neurones à GnRH
Franceschini, Isabelle; Desroziers, Elodie ULg; Ottogalli, Monique et al

Poster (2008, September)

Detailed reference viewed: 7 (0 ULg)
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See detailDevelopment of a low actuation voltage RF MEMS switch
Kiang, Kian Shen; Kraft, Michaël ULg

in Eurosensors XXII (2008, September)

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See detailCloud filling of total suspended matter, chlorophyll and sea surface temperature remote sensing products by the Data Interpolation with Empirical Orthogonal Functions methodology, application to the BELCOLOUR-1 database
Sirjacobs, Damien ULg; Alvera Azcarate, Aïda ULg; Barth, Alexander ULg et al

in ESA Special Publication SP666 (2008, September)

Space-time filling of the gaps in satellite data archives is an important step for the improvement of various marine ecosystem studies. The Data Interpolation with Empirical Orthogonal Functions ... [more ▼]

Space-time filling of the gaps in satellite data archives is an important step for the improvement of various marine ecosystem studies. The Data Interpolation with Empirical Orthogonal Functions methodology (DINEOF) allows calculating missing data in geophysical datasets without requiring a priori knowledge about statistics of the full data set [1]. It was successfully applied to SST reconstructions as in [1] and [2]. Here, the DINEOF reconstruction method is applied to surface chlorophyll a (CHL), total suspended matter (TSM) and sea surface temperature (SST) data over the Southern North Sea and English Channel obtained from the BELCOLOUR archive. 1. Beckers, J.-M. and Rixen, M. (2003). EOF Calculations and Data Filling from Incomplete Oceanographic Datasets. Journal of Atmospheric and Oceanic Technology, 20:18391856. 2. Alvera-Azcárate, A., Barth, A., Rixen, M. and Beckers, J.-M. (2005). Reconstruction of incomplete oceanographic data sets using Empirical Orthogonal Functions. Application to the Adriatic Sea surface temperature. Ocean Modelling, 9:325–346. [less ▲]

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See detailAdaptation of a soil heterotrophic respiration model to an agricultural soil.
Buysse, Pauline ULg; Le Dantec, Valérie; Sagnier, Charlotte et al

Poster (2008, September)

This work aimed at adapting a model of soil heterotrophic respiration to an agricultural soil situated in the Hesbaye region (Belgium) and cultivated with a sugar beet / winter wheat / potato/ winter ... [more ▼]

This work aimed at adapting a model of soil heterotrophic respiration to an agricultural soil situated in the Hesbaye region (Belgium) and cultivated with a sugar beet / winter wheat / potato/ winter wheat rotation. This model would be integrated as a sub routine in a larger model describing soil respiration and soil carbon content evolution in crops and that will include autotrophic respiration and CO2 diffusion in soil. The present model is run at a daily time step and at the ecosystem spatial scale and is derived from the CENTURY model. Model parameterisation was performed on the basis of literature survey and of data collected at the Carboeurope agricultural site of Lonzée. Soil characteristics were determined on the basis of analyses performed on loamy soils, typical of the Hesbaye region. Driving variables (meteorological variables and litter input) were obtained during a 4 year measurement campaign performed at the Lonzée experimental site. Biochemical parameters for wheat, potato and sugar beet crops were collected from literature. However, a large parameter variability was noticed as well as a lack of information concerning sugar beet and potato. A sensitivity analysis was performed in order to classify the different parameters in terms of their impact on the respiration rate and carbon contents of each pool. It showed that the most important parameters were those controlling the temperature response, the litter input and its nitrogen and lignin content. The sensitivity analysis also showed differences in parameter impact between short and long term, notably because of pool stabilisation dynamics and crop residue types. This analysis allowed defining the further experiments that need to be developed in order to improve model adjustment on experimental data. [less ▲]

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See detailCOcaine in WATer
Theunis, Laetitia ULg; Dubois, Nathalie ULg; Van Nuijs, Alexander et al

Poster (2008, September)

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See detailDécalage didactique dans un cours de statistique descriptive en première année à l'université
Henry, Valérie ULg

Conference (2008, September)

Chargée d’un cours de statistique descriptive en 1ère année de bachelier en ingénieur de gestion à l’Université de Liège, nous avons voulu mettre en place une méthode d’enseignement centrée sur l’activité ... [more ▼]

Chargée d’un cours de statistique descriptive en 1ère année de bachelier en ingénieur de gestion à l’Université de Liège, nous avons voulu mettre en place une méthode d’enseignement centrée sur l’activité cognitive des apprenants (Henry – Leclercq [2]) et s’inscrivant dans une logique de développement de compétences transversales et disciplinaires. Les dispositions prises pour l’implémentation de ce dispositif nous ont conduit à identifier certaines difficultés relatives à l’apprentissage des notions concernées et dont nous ne soupçonnions pas la présence. Lors de l’exposé, nous relaterons principalement trois expériences réalisées en classe et qui sont à la source de nos constatations. La première activité, qui s’est déroulée lors du tout premier cours, était consacrée à des pré-requis supposés, soit les notions de pourcentage et de taux de variation. Cette séance consistait en un Questionnaire à Choix Multiples projeté à l’écran et pour lequel les étudiants disposaient de Boîtiers de Vote Electronique (Gilles et al. [1]). Ces BVE leur permettaient de répondre aux questions en appuyant sur le bouton correspondant à la solution choisie, les statistiques des solutions données par l’ensemble des étudiants s’affichant à l’écran dès la clôture des votes. La deuxième activité a consisté en la rédaction, par groupes d’étudiants, de démonstrations non encore exposées. Les productions des élèves ont été reprises et corrigées par l’enseignant. Nous décrirons quelque peu ce que ces travaux nous ont appris sur les représentations de nos étudiants. Enfin, nous avons eu l’occasion de mettre en place une activité de débat scientifique au sens de Marc Legrand (Legrand [3]) à propos de la définition de l’écart absolu moyen. Nous verrons comment cette activité s’est déroulée et comment une définition correcte a pu émerger des débats entre étudiants. Dans tout l’exposé, nous insisterons sur le décalage existant entre le discours de l’enseignant et les représentations mentales des étudiants ainsi que sur la nécessité de mettre à jour des conceptions qui peuvent nuire à la construction de savoirs que nous jugeons parfois élémentaires à l’université. [less ▲]

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See detailThe mining work of children under methodological plurality
Andre, Géraldine ULg; Godin, Marie; Mrsic-Garac, Sonia

Conference (2008, September)

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See detailCyanobacterial diversity in the Transantarctic Mountains (Antarctica).
Fernandez Carazo, Rafael ULg; Hodgson, Dominic; Wilmotte, Annick

Poster (2008, August 31)

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See detailFossil cyanobacterial sequences in Antarctic lake sediments
Fernandez Carazo, Rafael ULg; Hodgson, Dominique; Wilmotte, Annick

Poster (2008, August 31)

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See detailA new approach to analyze genotypes of colony-forming cyanobacteria from environmental samples.
Lara, Yannick ULg; BOUTTE, Christophe; PERETYATKO, Anatoly et al

Poster (2008, August 31)

Several studies have shown the efficiency of sequences as rRNA-ITS, cpcBA, rbcLX and other housekeeping genes to study taxonomy [1, 2, 3], population, community structure of cyanobacteria, or for Multi ... [more ▼]

Several studies have shown the efficiency of sequences as rRNA-ITS, cpcBA, rbcLX and other housekeeping genes to study taxonomy [1, 2, 3], population, community structure of cyanobacteria, or for Multi Locus Sequence Analysis [4]. Recently, the genotypic analysis of single colonies and single filaments directly isolated from the environment has been carried out by other authors. It appears that different genotypes of Microcystis are present in one population in one lake. Besides, succession of toxic and non-toxic genotypes may have a critical influence on toxin concentrations during the blooms [5]. Genotypic analysis of colony-forming cyanobacteria requires enough DNA. So far, the genotypes of environmental single colonies of Microcystis were characterized on the basis of one or two PCR [6]. As the DNA content of one single colony only allows for a few PCR reactions, we have developed a new approach using Whole Genome Amplification with Phi29 polymerase to allow for the Multi Locus Sequences Typing analysis of a single colony or filament. For the first time, we were able to amplify and sequence more than one locus of the genome of a single colony of Microcystis. In addition, we have obtained the first sequences of rpoC1, rbcLX and rRNA-ITS from a single colony of the genus Woronichinia ( identified by microscopy). This approach allows to work with a small amount of DNA, and represents a concrete answer to the lack of data on non-cultivable cyanobacteria. This research is supported by the Belgian Science policy under the science for a sustainable development (SSD) and Fonds de la Recherche Scientifique-FNRS with a FRIA fellowship. References: [1] Otsuka S, et al (1999) FEMS Microbiology Letters 172 15-21 [2] Gugger M, et al (2002) Int J Syst Evol Microbiol 52 1867-1880 [3] Haverkamp T, et al (2008) Environmental Microbiology 10(1) 174-188 [4] Lodders N, et al (2005) Environmental Microbiology 7 (3) 434-442 [5] Kardinaal E, and Visser P (2005) In Harmfuf cyanobacteria, Springer Dordrecht pp 41-64 [6] Janse I, et al (2004) Appl Environm Microbiol 70 (7) 3979–3987 [less ▲]

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See detailAn Ordovician cryptospore and trilete spore assemblage from Saudi Arabia
Steemans, Philippe ULg; Wellman, C. H.; Miller, M. et al

Conference (2008, August 30)

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See detailLa "Joconde" de Léonard de Vinci et sa description par Giorgio Vasari
Fagnart, Laure ULg

Conference (2008, August 28)

Detailed reference viewed: 126 (1 ULg)
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See detailServices and Consumer Communities
Toussirot, Muriel ULg; Van Riel, Allard ULg

Poster (2008, August 25)

Detailed reference viewed: 39 (14 ULg)
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See detailFixed discrimination factors in diet reconstruction?
Caut, Stéphane; Das, Krishna ULg

Conference (2008, August 25)

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See detailConception d'une typologie des actes et services professionels offerts par les psychologues belges.
Côte, Virginie; Mormont, Marie; Hansez, Isabelle ULg

Conference (2008, August 22)

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See detailFemmes entrepreneures et formation à distance : Quel impact sur leur sentiment d’efficacité personnelle? Etude du cas ELFE
Constantinidis, Christina ULg

Conference (2008, August 20)

Cette communication s’inscrit dans le cadre du projet Elfe et vise à évaluer l’impact d’une formation à distance pour femmes créatrices et chefs d’entreprise sur leur sentiment d’efficacité personnelle ... [more ▼]

Cette communication s’inscrit dans le cadre du projet Elfe et vise à évaluer l’impact d’une formation à distance pour femmes créatrices et chefs d’entreprise sur leur sentiment d’efficacité personnelle, tel que défini par Bandura (1997). Nous situons notre intervention par rapport aux premier et deuxième niveaux d’évaluation d’une formation selon Kirkpatrick (1983), se rapportant respectivement à la satisfaction des apprenants et à leurs acquis, avec une attention particulière au sentiment d’efficacité personnelle. Notre méthodologie de recherche qualitative est basée sur dix études de cas approfondies auprès de femmes futures créatrices et chefs d’entreprise. Les résultats en termes de satisfaction des apprenantes sont nuancés et mettent en évidence différents éléments de contexte. Par contre, l’étude révèle qu’au terme de la formation à distance, les femmes entrepreneures de notre échantillon ont vu leur sentiment d’efficacité personnelle augmenter. Nous identifions différents facteurs explicatifs. Enfin, l’analyse met en évidence certains éléments relatifs au troisième niveau de Kirkpatrick, le transfert sur le terrain, ouvrant ainsi la route à de nouvelles pistes de recherche. Les implications managériales sont importantes. En effet, il nous semble crucial que notre formation s’inscrive dans une vision à long terme et, au-delà de développer les connaissances et compétences, contribue aussi et surtout à renforcer le sentiment d’efficacité personnelle des apprenantes par rapport à leurs capacités entrepreneuriales, facteur déterminant pour la performance présente et future de leurs entreprises. [less ▲]

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See detailCoccolithophore bloom dynamics shape bacterioplankton communities in the northern Bay of Biscay
Van Oostende, Nicolas; Vyverman, Wim; Harlay, Jérôme ULg et al

Poster (2008, August 17)

Coccolithophores (Prymnesiophyceae) such as Emiliania huxleyi belong to the most productive calcifying organisms in the oceans. During two consecutive years we assessed bacterial diversity and dynamics ... [more ▼]

Coccolithophores (Prymnesiophyceae) such as Emiliania huxleyi belong to the most productive calcifying organisms in the oceans. During two consecutive years we assessed bacterial diversity and dynamics during the course of spring phytoplankton blooms dominated by coccolithophores in the northern part of the Bay of Biscay. Bacterioplankton community composition was assessed by means of denaturing gradient gel electrophoresis (DGGE) in combination with 16S rRNA gene clone libraries. We used ordination analysis to relate bacterioplankton community dynamics to phytoplankton pigment data and environmental parameters (nutrient concentrations, total alkalinity, concentration of transparent exopolymeric particles (TEP), pCO2). We found a clear difference in composition between the free-living and the particle-associated bacterial assemblage, with the identified Flavobacteria and Sphingobacteria phylotypes being characteristic for the particle-associated bacterial assemblage and Alfaproteobacteria and members of the SAR86 cluster dominating the free-living bacterial assemblage. Stations along the continental margin, at different stages in the coccolithophore bloom, were characterized by distinct bacterial assemblages which correlated well with changes in phytoplankton community composition and TEP abundance. We hypothesize that coccolithophore bloom dynamics shape both the free-living and the particle associated bacterial assemblages through phytoplankton group-specific associations and TEP production [less ▲]

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See detailQuels enseignements retenir de l’évaluation des compétences documentaires des étudiants qui accèdent à l’enseignement supérieur en Communauté française de Belgique ?
Pochet, Bernard ULg; Thirion, Paul ULg

Conference (2008, August 13)

Cette enquête est une adaptation d’une étude équivalente réalisée, en 2002, au Québec. Le questionnaire comporte 20 questions réparties en 5 thèmes représentant les étapes de la recherche documentaire ... [more ▼]

Cette enquête est une adaptation d’une étude équivalente réalisée, en 2002, au Québec. Le questionnaire comporte 20 questions réparties en 5 thèmes représentant les étapes de la recherche documentaire. Elle vise à connaître le niveau de compétences documentaires des étudiants qui arrivent dans l’enseignement supérieur, vérifier l’adéquation de celui-ci avec la perception qu’en ont les formateurs et identifier les lacunes afin de permettre d’améliorer les formations. 31 établissements d'enseignement universitaire et non universitaire ont accepté de participer à l’étude. Le questionnaire québécois adapté à la situation belge a été envoyé en septembre 2007 à un échantillon aléatoire de 4388 étudiants accédant pour la première fois à l'enseignement supérieur. Le taux de retour s’élève à 42,57%. Après analyse, il apparaît que comme au Québec, la moyenne des résultats est faible (7,67/20). Outre diverses variables sociologiques, certaines caractéristiques des étudiants sont en lien direct avec le niveau de performance, notamment la fréquentation d'une bibliothèque dans l'enseignement secondaire, le choix d'option dans le secondaire ou le choix actuel d’étude. A contrario, l'utilisation d'Internet ne semble pas favoriser la compétence informationnelle des étudiants. Ces observations confirment la nécessité de proposer des formations aux étudiants pour leur permettre d’atteindre les compétences requises par le métier d’étudiant. Les lacunes observées vont permettre d’adapter les formations existantes. L'étude doit se poursuivre pour évaluer l’impact réel des formations documentaires proposées. [less ▲]

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See detailAntecedents of Team Learning in New Product Development Teams
Ennabih, Abdessamad ULg; Van Riel, Allard ULg; Sasovova, Z.

Poster (2008, August 08)

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See detailThe first orbital solution for the massive colliding-wind binary HD 93162 (=WR 25)
Gamen, R.; Gosset, Eric ULg; Morrell, N. I. et al

in Revista Mexicana de Astronomia y Astrofisica Conference Series (2008, August 01)

Since the discovery, with EINSTEIN, of strong X-ray emission associated with HD 93162, this object was recurrently predicted by some authors to be a colliding-wind binary system. However, radial-velocity ... [more ▼]

Since the discovery, with EINSTEIN, of strong X-ray emission associated with HD 93162, this object was recurrently predicted by some authors to be a colliding-wind binary system. However, radial-velocity variations that would prove the suspected binary nature have never been found so far. We spectroscopically monitored this object in order to investigate its possible variability and to provide an answer to the above-mentioned discordance. We derived radial velocities from spectroscopic data acquired mainly between 1994 and 2006, and searched for periodicities. For the first time, periodic radial-velocity variations are detected. Our analysis definitively shows that the Wolf-Rayet star WR 25 is actually an eccentric binary system with a probable period of about 208 days. [less ▲]

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See detailTowards an Understanding of the Of?p star HD 191612: Optical Spectroscopy
Howarth, I. D.; Walborn, N. R.; Lennon, D. J. et al

in Revista Mexicana de Astronomia y Astrofisica Conference Series (2008, August 01)

We have acquired extensive optical spectroscopy of the early-type magnetic star HD 191612 (O6.5f?pe-O8fp). The Balmer and HeI lines show strongly variable emission which is extremely reproducible on a ... [more ▼]

We have acquired extensive optical spectroscopy of the early-type magnetic star HD 191612 (O6.5f?pe-O8fp). The Balmer and HeI lines show strongly variable emission which is extremely reproducible on a well-determined 538-d period. Metal lines and HeII absorptions (including many selective emission lines, but excluding HeII lambda 4686 Å emission) are nearly constant in line strength, but are variable in velocity. The radial-velocity variations establish a double-lined binary orbit with P_{orb} = 1542d, e = 0.44; by elimination, rotational modulation of a magnetically constrained plasma is left as by far the most likely `clock' underlying the 538-d changes. The implied rotation period shows that slow rotators can easily be hidden in the O-star population, with gaussian-like `turbulence' dominating the line widths. [less ▲]

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See detailGravitational Lensing, Dark Matter and the Optical Gravitational Lens Experiment
Surdej, Jean ULg; Claeskens, Jean-François ULg; Delacroix, Christian ULg et al

in Matagne, N.; Cugnon, Joseph; Lansberg, Jean-Philippe (Eds.) American Institute of Physics Conference Proc. Volume 1038 (2008, August 01)

After briefly reviewing the history of gravitational lensing, we recall the basic principles of the theory. We then describe and use a simple optical gravitational lens experiment which has the virtue of ... [more ▼]

After briefly reviewing the history of gravitational lensing, we recall the basic principles of the theory. We then describe and use a simple optical gravitational lens experiment which has the virtue of accounting for all types of image configurations observed so far among the presently known gravitational lens systems. Finally, we briefly present the 4m International Liquid Mirror Telescope project in the context of a photometric monitoring of multiply imaged quasars. [less ▲]

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See detailColliding Wind Signatures in Early-Type Binaries
Rauw, Grégor ULg

in Revista Mexicana de Astronomia y Astrofisica Conference Series (2008, August 01)

Observations of early-type binaries not only allow us to establish the fundamental properties of massive stars in a model-independent fashion, but furthermore provide important information on the ... [more ▼]

Observations of early-type binaries not only allow us to establish the fundamental properties of massive stars in a model-independent fashion, but furthermore provide important information on the interactions of their stellar winds. The signatures of wind-wind interactions have been found over a broad range of wavelengths and energies, from the radio domain to X-rays and possibly gamma-rays. In this review, I discuss some results of the study of wind interactions in Wolf-Rayet and O-star binaries. [less ▲]

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See detailVariability of edaphic conditions in metal-contaminated sites at multiple scales. Two case studies in temperate and tropical environments
Colinet, Gilles ULg; Leclercq, Julie; Faucon, Michel-Pierre et al

Conference (2008, August)

In numerous places, mining and ore treatment activities have generated environmental contaminations which endanger ecosystem viability and/or human health. In some places, the ecological pressure induced ... [more ▼]

In numerous places, mining and ore treatment activities have generated environmental contaminations which endanger ecosystem viability and/or human health. In some places, the ecological pressure induced by the metal contaminations allowed the development a specific flora, fromwhich candidates for phytoremediation may be selected. A survey of edaphic conditions prevailing for plant growing in contaminated areas around metal smelters has been conducted in belgian calaminary sites (Zn, Pb, Cd contaminations) and in the Katanga province of RDC (Cu contaminations). As the processes generated by the modifications of the soil environment may affect the form of a trace element, that is its distribution through various pools, we investigated physical and chemical fractionation of some metallic trace elements (Cu, Zn, Pb, and Cd) in soils and compared temperate and tropical cases. The results stress the need for a typology of the contaminations that takes into account the classical pedological parameters, even if contaminated sites are far from classical soil environment. The variability of edaphic properties that can occur within small distances is also an important point to consider when planning rehabilitation operations. [less ▲]

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See detailImpact of different spectroscopic datasets on CH4 retrievals from Jungfraujoch FTIR spectra
Duchatelet, Pierre ULg; Mahieu, Emmanuel ULg; Demoulin, Philippe ULg et al

Poster (2008, August)

Methane (CH4) is released in the atmosphere by natural processes (e.g. wetlands, termites) as well as by anthropogenic activities (e.g. fossil fuel exploitation, rice agriculture, biomass burning, etc ... [more ▼]

Methane (CH4) is released in the atmosphere by natural processes (e.g. wetlands, termites) as well as by anthropogenic activities (e.g. fossil fuel exploitation, rice agriculture, biomass burning, etc). Due to its high warming potential and its relatively long chemical lifetime (~9 years), atmospheric methane plays a major role in the radiative forcing responsible of the greenhouse effect. Methane also affects climate by influencing tropospheric ozone and stratospheric water. The cycle of methane is complex and to understand it requires a complete study of its emissions and its budget of sources and sinks. High quality methane data sets are needed to perform such studies. CH4 vertical distributions as well as total and partial column time series can be retrieved from high-resolution ground-based FTIR spectra, using, e.g., the SFIT-2 algorithm which implements the Optimal Estimation Method of Rodgers. A set of 5 microwindows - located in the 2 to 5.5 µm range and jointly adopted by all partners involved in the European HYMN project (www.knmi.nl/samenw/hymn/) - are fitted simultaneously during the retrieval procedure. Although this approach provides relatively high information content, CH4 retrieved profiles very often present large oscillations in the troposphere, which might result partly from inappropriate or inconsistent spectroscopic parameters. Significant improvements on retrieval quality could be reached by using more accurate CH4 spectroscopic parameters. This contribution compares 3 different sets of CH4 spectroscopic parameters (including HITRAN 2004 and 2 versions where HITRAN 2004 have been updated by recent laboratory measurements), which have been tested using one year of high resolution FTIR solar observations performed at the International Scientific Station of the Jungfraujoch (Swiss Alps, 46.5°N, 8.0 °E, 3580m a.s.l.). The impact of these different spectroscopic datasets on retrieved CH4 partial columns and vertical profiles, as well as on the fitting quality (residuals) and on the error budget characterizing our CH4 products will be evaluated and discussed. [less ▲]

Detailed reference viewed: 114 (14 ULg)
See detailEquine joint assessment: the role of ultrasound
Busoni, Valeria ULg

Conference (2008, August)

The presentation was a key-note talk about the use of ultrasonography in the assessment of equine joints.

Detailed reference viewed: 28 (5 ULg)
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See detailMorphological processing in developing readers: a visual word recognition study in French
Quemart, Pauline ULg; Casalis, Séverine

Conference (2008, August)

Detailed reference viewed: 12 (3 ULg)
Peer Reviewed
See detailThe Shoah: Its Pedagogical Impact on Current Documentary in Belgium
Van Cauwenberge, Geneviève ULg

Conference (2008, August)

Detailed reference viewed: 34 (4 ULg)
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See detailKBD is an agro-environmental disease: The south central Tibet input
Haubruge, Eric ULg; Chasseur, Camille; Lognay, Georges ULg et al

Conference (2008, August)

Detailed reference viewed: 22 (5 ULg)
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See detailStakeholders' Involvement as CSR analyser
El Abboubi, Manal ULg; Cornet, Annie ULg

Conference (2008, August)

Detailed reference viewed: 44 (7 ULg)
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See detailContribution to the specialist committee V.3 entitled "Fabrication Technology" of the 16th International Ship and Offshore Structure Congress
Caprace, Jean-David ULg

in Borzecki, T.; Bruce, G.; Han, Y. S. (Eds.) et al Specialist committee V.3 - Fabrication technology (2008, August)

Detailed reference viewed: 28 (5 ULg)
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See detail1H NMR metabolomic approach of the laser-induced choroidal neovascularization in mice
Lambert, Vincent ULg; Frederich, Michel ULg; Rousseau, Rousseau et al

Poster (2008, August)

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See detailAeolian vibrations on High Voltage Lines .Comparative self damping as evaluated on the field
Lilien, Jean-Louis ULg; Destiné, Jacques ULg; Gillis, Jean-Marie ULg et al

(2008, August)

New ways to measure continuously in real time, aeolian vibrations.

Detailed reference viewed: 145 (29 ULg)
See detailGenetic variability of the Skyros pony breed and its relationship with other Greek and foreign horse breeds
Bömcke, Elisabeth ULg; Gengler, Nicolas ULg; Cothran, E. G.

in Book of Abstracts of the 59th Annual Meeeting of the European Association for Animal Production (EAAP) (2008, August)

On the basis of phenotypes and genotypes, seven native breeds were identified in Greece. The Skyros pony is the more distinctive of these breeds. Using blood group and microsatellite loci, the aim of this ... [more ▼]

On the basis of phenotypes and genotypes, seven native breeds were identified in Greece. The Skyros pony is the more distinctive of these breeds. Using blood group and microsatellite loci, the aim of this study was to assess the genetic diversity of Skyros breed, using also available genealogical information, and to investigate its relationships with the other Greek and foreign horse breeds. Results showed that the Skyros breed presented similar level of genetic diversity to other European breeds. Comparisons between DNA-based and pedigree-based results showed that the loss of genetic diversity has probably occurred before the beginning of breed registration. However, the relatively high levels of heterozygosity and Polymorphism Information Content values indicated still sufficient residual genetic variability that could be useful for planning future breeding strategies for the breed conservation. Relationship study showed no association between genetic variation of native Greek breed and population size or degree of geographic isolation. Compared to other domestic breeds, most of the Greek breed showed closest relationships with Middle Eastern breeds, while the Skyros breed clustered surprisingly with Lithuanian horses. [less ▲]

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See detailSmall scale variations in the microbenthic loop of Posidonia oceanica meadows: an experimental interpolation design.
Pete, Dorothée ULg; Lenartz, Fabian ULg; Velimirov, Branko et al

Poster (2008, August)

In the sediment compartment of Posidonia oceanica meadows, there is a severe lack of information on small scale variations. In an attempt to understand spatial variations of the microbenthic loop ... [more ▼]

In the sediment compartment of Posidonia oceanica meadows, there is a severe lack of information on small scale variations. In an attempt to understand spatial variations of the microbenthic loop (bacteria, organic matter, microphytobenthos and meiofauna), an experiment based on interpolation methods was led in Calvi Bay (Corsica, France), in March 2008, at 10 m depth. Twelve points were sampled randomly in a 125 x 125 cm square, divided into twenty-five 25 x 25 cm squares, to assess and describe the spatial distribution and variations of different parameters of the sediment. Those parameters are granulometry, density of P. oceanica, concentration in nutrients in the pore water, bacteria (biomass, abundance, morphotypes), organic matter (biomass), microphytobenthos (biomass), roots and rhizomes (biomass) and meiofauna (biomass). Results and distribution maps of the respective sediment parameters will be presented for the first time. [less ▲]

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See detailImplication of tilted peptides in viral fusion
Lins, Laurence ULg; Brasseur, Robert ULg

Poster (2008, August)

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See detailImportance of the microbenthic loop of Posidonia oceanica meadows to detect anthropogenic perturbations early: first results
Pete, Dorothée ULg; Velimirov, Branko; Bouquegneau, Jean-Marie ULg et al

Conference (2008, August)

It was demonstrated that Posidonia oceanica, the marine magnoliophyte endemic to the Mediterranean Sea, is a valuable tool to assess environmental qualities of the coastal zones. However, only few studies ... [more ▼]

It was demonstrated that Posidonia oceanica, the marine magnoliophyte endemic to the Mediterranean Sea, is a valuable tool to assess environmental qualities of the coastal zones. However, only few studies have attempted to use characteristics of its sediment compartment as an indicator of the environment state of health. Yet, organisms living in this compartment have a turnover which is faster than for canopy-organisms which makes them useful as valid early descriptors of pollution. The study described here takes place in a project which aims to find an early holistic indicator of anthropogenic perturbations in the Mediterranean coastal zones. The investigation is based on the microbenthic loop (organic matter, bacteria, microphytobenthos and meiofauna) and was led in two different sites of Calvi Bay (Corsica, France), at 10 m depth, in March and June 2007. Only results about bacteria (abundance, biomass, morphotypes), microphytobenthos (biomass) and organic matter (biomass) will be presented. For both seasons, significant differences between sites are found, irrespective on whether variables are treated separately or together, thus indicating that the microbenthic loop has potential to be a good early indicator of pollution. [less ▲]

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See detailIn Situ Testing of Large Machines: Alternative Methods for Radiated Emission Measurements
Catrysse, Johan; Vanhee, Filip; Knockaert, Jos et al

Conference (2008, August)

On the legal aspect, the new European Directive on ElectroMagnetic Compatibility 2004/108/EC concerns also large machines. On a technical point of view, the special situation to characterise the EMC ... [more ▼]

On the legal aspect, the new European Directive on ElectroMagnetic Compatibility 2004/108/EC concerns also large machines. On a technical point of view, the special situation to characterise the EMC behaviour of large machines imply that current procedures are complex and very expensive, and in some cases even not possible. Adapted measuring methodologies and procedures are needed. As a response to this situation and within the European R&D Frameworks, the TEMCA2 project aimed to develop new and adapted methodologies for the assessment of EMC related to this type of industrial large machinery. [less ▲]

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See detailMesoporous TiO2 thin films for photovoltaic applications
Dewalque, Jennifer ULg; Mathieu, Xavier; Decroly, André et al

Poster (2008, August)

Thin films of nanocrystalline, mesostructured titanium dioxide are very promising materials to build low cost and efficient photovoltaic devices. TiO2 present a high chemical stability and electronic ... [more ▼]

Thin films of nanocrystalline, mesostructured titanium dioxide are very promising materials to build low cost and efficient photovoltaic devices. TiO2 present a high chemical stability and electronic properties such as photo-induced electronic transfer properties associated with the anatase phase. For many applications, highly porous nanostructured thin films with accessible pores are preferable to dense ones. Indeed, high accessible porosity leads to high surface area increasing the electron transfer surface. [less ▲]

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See detailIn Situ Testing of Large Machines: Alternative Methods for Conducted Emission Measurements
Catrysse, Johan; Vanhee, Filip; Knockaert, Jos et al

Conference (2008, August)

On the legal aspect, the new European Directive on ElectroMagnetic Compatibility 2004/108/EC concerns also large machines. On a technical point of view, the special situation to characterise the EMC ... [more ▼]

On the legal aspect, the new European Directive on ElectroMagnetic Compatibility 2004/108/EC concerns also large machines. On a technical point of view, the special situation to characterise the EMC behaviour of large machines imply that current procedures are complex and very expensive, and in some cases even not possible. Adapted measuring methodologies and procedures are needed. As a response to this situation and within the European R&D Frameworks, the TEMCA2 project aimed to develop new and adapted methodologies for the assessment of EMC related to this type of industrial large machinery. [less ▲]

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See detailBovine colostrum: an efficient and cost-effective growth promoter in piglet weaning diet
Boudry, Christelle ULg; Dehoux, Jean-Paul; Wavreille, José et al

in Book of the Abstracts of the 59th Annual Meeting of the European Association for Animal Production (2008, August)

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See detailEvaluation de l’impact des propriétés tensioactives et d’hydrophobicité de surface sur le transfert gaz-liquide au sein d’un réacteur biphasique et son extrapolation
Gillet, Sébastien ULg

Poster (2008, August)

L’objectif du travail était d’une part d’évaluer la faisabilité d’une extrapolation du système et d’autre part de mieux comprendre l’impact des constituants de ce système biphasique sur le transfert de ... [more ▼]

L’objectif du travail était d’une part d’évaluer la faisabilité d’une extrapolation du système et d’autre part de mieux comprendre l’impact des constituants de ce système biphasique sur le transfert de masse gaz-liquide.En proposant une méthode d’estimation en continu de la stabilité de l’émulsion biphasique, ce travail permet de conclure à la possibilité d’un passage à une échelle plus grande.Pour mieux comprendre l’impact de la biomasse et du surfactant sur les mécanismes impliqués dans le transfert, une approche basée sur trois types de mesures est proposée. Cette approche, simple dans sa mise en oeuvre, présente l’avantage de se baser sur des mesures réelles, permettant de prendre en compte certains facteurs ignorés par les modèles mathématiques fournis dans la littérature. Le travail met en évidence une diminution du “ kLa ” au cours de la “ vie ” d’un réacteur biphasique. De plus, les mécanismes responsables de cette diminution ont également pu être identifiés. [less ▲]

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See detailDry heathlands and sandy open grasslands in a suburban environment in the south of Brussels (Belgium) : Assessment of the conservation status
Taymans, Julien ULg; Mahy, Grégory ULg

Poster (2008, August)

The Brabant sablo-limoneux region is located in the south and near Brussels, in the phytogeographic district of Brabant (Atlantic domain). This region is characterized by a high diversity of local ... [more ▼]

The Brabant sablo-limoneux region is located in the south and near Brussels, in the phytogeographic district of Brabant (Atlantic domain). This region is characterized by a high diversity of local ecological conditions due to the alternance of important tertiary sand outcrops and quaternary silty layers. The agro-sylvo-pastoral activities, which were practiced on these sandy and sand-silty soils for centuries, caused the evolution of the climactic forest into semi-natural habitats such as dry heathland, sandy grassland and grassheath. The evolution of the heathland distribution from 1770 to the present has been studied on the scale of the Dyle hydrographic subbasin (43.000 ha). It is characterized by an important regression of this habitat in the study area (from 1460 ha in 1770 to 72 ha in 2006), mainly due to Pinus sylvestris orchards, and more recently, to urbanisation caused by the proximity of Brussels. A generalized ageing and an environmental closing characterize the evolution of heathland physiognomy since the middle of the 20th century. The phytosociology of heathlands, sandy grasslands and grassheaths has been characterized and 19 groups of vegetation have been differentiated. Among the 393 listed higher plant species, more than 30 are of great conservation interest in the regional context. A hierarchisation of restoration priorities has been established on the scale of the studied hydrographic subbasin and management measures have been proposed. [less ▲]

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See detailPlacing the academic library at the center of veterinary PhD students' training
Brouwir, Christine ULg; Vandenput, Sandrina ULg; Maas, Michel et al

in Journal of the European Association for Health Information and Libraries (2008, August), 4(3), 18-20

For several years academic librairies have been actively involved in information literacy instruction. However, the required competences are different for PhD students and in the case of the Veterinary ... [more ▼]

For several years academic librairies have been actively involved in information literacy instruction. However, the required competences are different for PhD students and in the case of the Veterinary Faculty of the University of Liège (Belgium), good Faculty-Librarian collaborations have been developed. Specific targeted courses and training sessions concerning information literacy have been officially incorporated in the PhD curriculum, with the main objective being to help PhD students to be autonomous and efficient in the elaboration of scientific publications, an essential stage of their scientific career. [less ▲]

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See detail18F LABELING OF BIOMOLECULES USING CLICK CHEMISTRY FOR PET APPLICATIONS : SYNTHETIC DEVELOPMENTS
Thonon, David ULg; Flagothier, Jessica ULg; Paris, Jérôme ULg et al

in Drugs of the Future (2008, August), 33(A), 235

Detailed reference viewed: 90 (17 ULg)
See detailPreliminary results on the behavioural-ecology of a long-tailed macaque (Macaca fascicularis) population in disturbed urban habitats, Bangkok (Thailand)
Brotcorne, Fany ULg; Huynen, Marie-Claude ULg; Savini, Tommaso ULg

Conference (2008, August)

In many tropical regions of the world, humans and nonhuman primates share habitats, and their interactions are increasingly common. As a result, human presence has an important impact on the demography ... [more ▼]

In many tropical regions of the world, humans and nonhuman primates share habitats, and their interactions are increasingly common. As a result, human presence has an important impact on the demography, behaviour, and overall ecology of the nonhuman primates’ populations. More specifically, the increasing human pressure represents a critical danger for the survival of most primate species, often leading to the local extinction of entire populations. However, some primate species show a high degree of plasticity when facing human disturbance, and even adapt their ecological behaviour to heavily modified urban areas. Our research project, in collaboration with the City of Bangkok, focuses on long-tailed macaques (Macaca fascicularis), a species distributed throughout all Southeast Asia, and showing a great ability to adapt to urban habitat. The goal of our study is to define the impact of urbanized habitat fragments on the social interaction and reproductive patterns of the macaque populations, in order to design sustainable management plans and reduce conflicts with local human populations. We present preliminary results from a 4 month study period (May to August 2007) on a large semi-provisioned troop living in the South of Bangkok suburban area. Data were collected via instantaneous scan sampling for activity budget, and focal sampling for diet, while aggressive and sexual interactions within the group were noted ad libitum. The study group, 128 animals (10 males, 6 subadults, 48 females of whom 39 with an infant, and 64 juveniles) appears to use an area highly disturbed by of human activities. In the coming year we plan to extend our observations to a second troop inhabiting an estimated area of 5 km2 of pristine mangrove with an ongoing forest regeneration project. [less ▲]

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