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See detailSedimentological traces of earthquakes in recent lakes sediments along the North Anatolian Fault, Turkey
Avsar, Ulas; Boes, X; Hubert, Aurelia ULg et al

Conference (2008, October)

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See detailUne lecture scientométrique de la littérature sur les réseaux sociaux en sciences de gestion et en entrepreneuriat
Froehlicher, Thomas ULg; Bares, Franck; Bourgne, Patrick

Conference (2008, October)

Detailed reference viewed: 47 (6 ULg)
See detailHistopathological comparison of two mouse-adapted influenza A strains in mice.
Garigliany, Mutien-Marie ULg; Habyarimana, Adélite; Cornet, Anne et al

Conference (2008, October)

Detailed reference viewed: 15 (7 ULg)
See detailRemote Sensing of Suspended Particulate Matter in Turbid Waters: State of the Art and Future Perspectives.
Ruddick, Kevin; Nechad, Bouchra; Park, Youngje et al

Conference (2008, October)

Detailed reference viewed: 28 (3 ULg)
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See detailCrossed random effects models for the detection of differential item functioning in psychometrics
Magis, David ULg; Frederickx, Sofie; Tuerlinckx, Francis et al

Conference (2008, October)

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See detailCoded structural light imaging system for weed detection in outdoor conditions
Destain, Marie-France ULg; Piron, Alexis ULg

Conference (2008, October)

A method of determining the position of weeds growing in soil amongst crops is described. Is uses a camera to acquire stereoscopic images of plants.

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See detailLa répression du négationnisme en Belgique : de la réussite législative au blocage politique
Grandjean, Geoffrey ULg

Conference (2008, October)

This study focuses on the prosecution of genocide-denial in Belgium and on the current deadlock of this political question. A political science approach is used to shed light on this issue which makes ... [more ▼]

This study focuses on the prosecution of genocide-denial in Belgium and on the current deadlock of this political question. A political science approach is used to shed light on this issue which makes often the headlines. The study is based on the analysis of parliamentary documents and on several interviews with the key actors of this issue. This approach enables an analytic understanding of this question. The research topic is all the more meaningful because it concerns dialectics between the present and the past and it puts into questions the place of history in politics. [less ▲]

Detailed reference viewed: 37 (3 ULg)
See detailOn mathematical concepts for the material world
Leclercq, Bruno ULg

Conference (2008, September 25)

Detailed reference viewed: 71 (6 ULg)
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See detailEmerging International Standards : If a dream could come true
Michel, Quentin ULg

Conference (2008, September 25)

Detailed reference viewed: 11 (3 ULg)
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See detailReflection spheres of the public, social and cooperative economy
Fecher-Bourgeois, Fabienne ULg; Lévesque, Benoît

Conference (2008, September 24)

Detailed reference viewed: 6 (3 ULg)
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See detailThree-dimensional extension of the Io UV footprint emissions
Bonfond, Bertrand ULg; Grodent, Denis ULg; Gérard, Jean-Claude ULg et al

Conference (2008, September 23)

The Io UV footprint is an auroral feature observed close to the feet of the field lines passing through Io on both Jovian hemispheres. These light emissions are caused by the electromagnetic interaction ... [more ▼]

The Io UV footprint is an auroral feature observed close to the feet of the field lines passing through Io on both Jovian hemispheres. These light emissions are caused by the electromagnetic interaction between the satellite Io and the Jovian magnetosphere. For both the north and south poles, the Io footprint appears as a bright spot followed by a faint trailing tail and occasionally followed or preceded by secondary spots. The footprint morphology and the spots multiplicity have been found to vary with the location of Io in the plasma torus. [less ▲]

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See detailJupiter’s main auroral emission; local time and temporal variability
Grodent, Denis ULg; Radioti, Aikaterini ULg; Bonfond, Bertrand ULg et al

Conference (2008, September 23)

Jupiter's main auroral oval is associated with the ionosphere-magnetosphere coupling current system which is related to the breakdown of corotation in the middle magnetosphere. Its auroral footpath is ... [more ▼]

Jupiter's main auroral oval is associated with the ionosphere-magnetosphere coupling current system which is related to the breakdown of corotation in the middle magnetosphere. Its auroral footpath is usually represented as a smooth line closing around the pole. However, this simplistic view is misleading in many regards. We have constructed a new reference contour in the northern hemisphere (Figure 1), based on more than 1000 HST/UV images, which does not look like an oval and does not close around the pole. We use this reference contour to quantify the effects of temporal and local time variability of the magnetospheric plasma characteristics on the location of the main auroral emission. Beyond the orbit of Ganymede (15RJ), two key ingredients are expected to have a measurable influence on the instantaneous shape of the main emission contour: the azimuthal current flowing in the current sheet [1,2] and the corotation breakdown distance. The former affects the radial extent of the magnetic field lines, and the latter determines the radial location of the field aligned currents transmitting momentum from the planet to the lagging plasma. So far, models used to magnetically map the auroral main emission between the ionosphere and the equatorial plane assumed that these two parameters are constant and axisymmetric. However, in situ observations, mainly by Galileo, have revealed large local time asymmetries and temporal variations in the plasma flows and distribution. These variations have an impact on the azimuthal current and the distance at which the plasma angular velocity becomes significantly smaller than planetary rotation. We use a new magnetic field model [3], inherited from VIP4 and including a magnetic anomaly in the northern hemisphere, to simulate the effects of these asymmetries on the location of the main auroral emission, and interpret the large scattering of the corresponding HST data point. [less ▲]

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See detailThe altitude of Saturn’s aurora: implications for the auroral electron energy and location of the polar homopause
Gérard, Jean-Claude ULg; Bonfond, Bertrand ULg; Gustin, Jacques ULg et al

Conference (2008, September 23)

The Space Telescope Imaging Spectrograph (STIS) and the Advanced Camera for Surveys (ACS) on board the Hubble Space Telescope (HST) have been used to study the characteristics of Saturn’s FUV aurora ... [more ▼]

The Space Telescope Imaging Spectrograph (STIS) and the Advanced Camera for Surveys (ACS) on board the Hubble Space Telescope (HST) have been used to study the characteristics of Saturn’s FUV aurora, which is dominated by the Lyman and Werner bands of H2 and the H Lyman-α line. Images have been analyzed to determine the altitude of the emission above the limb and infer the characteristic energy of the auroral electrons. Our study shows that the peak of the emission is located 1000-1300 km above the limb, indicating that the precipitated electrons are mostly in the 0.1-1 keV energy range, that is significantly less than on Jupiter. Another source of information on the electron energy are the FUV spectra obtained with Voyager UVS (Sandel et al., 1982) and the HST-STIS (Gérard et al., 2004) and Cassini-UVIS spectrographs which only occasionally show a signature of absorption by hydrocarbons. Consequently, the emission is located above but close to the methane homopause. Finally, EUV spectra collected with the FUSE satellite (Gustin et al., 2008) provide information on the H2 column overlying the aurora through analysis of self-absorption and rotational temperature of the emitting layer from the intensity distribution among the H2 lines. If Moses et al. (2000)’s low latitude model is used to convert altitudes into pressure levels, H2 and hydrocarbon columns and temperature, discrepancies appear between the observed temperature, ultraviolet colour ratio and geometric altitude of the emission. One possibility is that the temperature near the homopause sharply increases at a pressure level higher than in the equatorial regions. [less ▲]

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See detailThe Io Footprint Morphology
Jacobsen, Sven; Saur, Joachim; Neubauer, F. M. et al

Conference (2008, September 23)

The innermost Galilean moon Io is embedded in a dense plasma torus. It disturbs the flow of the corotating torus plasma and generates MHD waves. Especially the Alfv ́ n e mode, which carries electric ... [more ▼]

The innermost Galilean moon Io is embedded in a dense plasma torus. It disturbs the flow of the corotating torus plasma and generates MHD waves. Especially the Alfv ́ n e mode, which carries electric currents along the magnetic field, is responsible for the famous Io footprint in the Jo- vian aurora. The Alfv ́ n waves are partly reflected at plasma e density gradients e.g. at the torus edges and form a compli- cated wave pattern. The footprint morphology in the Jovian aurora displays this pattern. Besides the main spot feature, a trailing wake extending over up to 100 degrees and occa- sionally occurring multiple spots indicating reflections have been identified. The intensity, the occurrence of multiple spots and the inter-spot distances have been found to vary strongly [1]. Io is moving up and down in the plasma torus confined to the centrifugal equator. It interacts with a dense plasma when located in the torus center and considerably thinner plasma at the torus flanks. The incoming plasma density controls the interaction strength and wave amplitude. This primar- ily leads to a relationship between the footprint brightness and Io’s centrifugal latitude [1]. However, it has also been shown that the reflection angle is strongly depending on the wave amplitude due to nonlinear effects [2]. This has an impact on the inter-spot distances. On the other hand this parameter is also directly affected when Io changes its posi- tion in the plasma torus. To deconvolve this system we present the results of our 3D MHD simulations showing the influence of Io’s centrifugal latitude and nonlinearities on the footprint morphology par- ticularly on the number of spots and inter-spot distances. We observe interference phenomena leading to locally en- hanced or reduced footprint brightness. We also discuss the recently observed leading spot feature [3]. [less ▲]

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See detailNovel pH responsive-copolymers for smart drug carriers
Jérôme, Christine ULg

Conference (2008, September 22)

Detailed reference viewed: 5 (1 ULg)
See detailEuropean legislation on methods for antibiotics detection in milk
Scippo, Marie-Louise ULg

Conference (2008, September 22)

Detailed reference viewed: 26 (0 ULg)
Peer Reviewed
See detailFootball and political violence
Fincoeur, Bertrand ULg

Conference (2008, September 20)

Detailed reference viewed: 8 (4 ULg)
See detailLa pré-dialyse
Krzesinski, Jean-Marie ULg

Conference (2008, September 19)

Detailed reference viewed: 8 (0 ULg)
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See detailQu’est-ce que les logiciels libres ?
Lejeune, Christophe ULg

Conference (2008, September 19)

Detailed reference viewed: 7 (1 ULg)
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See detailAnalyse collaborative avec Cassandre
Lejeune, Christophe ULg

Conference (2008, September 19)

Detailed reference viewed: 9 (0 ULg)
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See detailApplications de la micro - PIV dans des écoulements libre et confiné
Vetrano, Maria-Rosaria; Ruwet, Vincent; Lebeau, Frédéric ULg et al

Conference (2008, September 16)

L’objectif de cette communication est l’étude de deux micro-écoulements différents au moyen d’un système de micro-PIV non inversé. Ces écoulements diffèrent entre eux par les aspects suivants: Le premier ... [more ▼]

L’objectif de cette communication est l’étude de deux micro-écoulements différents au moyen d’un système de micro-PIV non inversé. Ces écoulements diffèrent entre eux par les aspects suivants: Le premier, un écoulement pulmonaire, est représentatif d’un flux stationnaire confiné. Le second, la formation de gouttelettes par un capillaire contrôlé par un cristal piézoélectrique, est représentatif d’un écoulement périodique à surface libre. La faisabilité de ce type de mesure est évaluée en mettant l’accent sur le fait que ces expérimentations ont été menées sur des micro-écoulements courbes tridimensionnels. [less ▲]

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See detailRecent advances in the synthesis of aliphatic polyesters by “click” chemistry
Riva, Raphaël ULg; Jérôme, Christine ULg; Jérôme, Robert ULg et al

Conference (2008, September 11)

Since the discovery of Sharpless and Meldal, the copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) is more and more popular in the field of macromolecular engineering owing to its robustness, its ... [more ▼]

Since the discovery of Sharpless and Meldal, the copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) is more and more popular in the field of macromolecular engineering owing to its robustness, its high tolerance to a wide range of functional groups without any need of protecting groups and the absence of side-products. This reaction is known to be a very efficient “click” reaction as defined by Sharpless. The chemical modification of aliphatic polyesters remains, at the time being, a very difficult task to achieve because of the very limited number of efficient chemical reactions, which can be implemented in the absence of chain degradation. The main purpose of this contribution is to report on the most recent advances on the use of CuAAC to derivatize aliphatic polyesters (Scheme 1). Interestingly enough, it was recently shown that CuAAC carried out onto aliphatic polyesters attached with either azides or alkynes is very efficient under mild conditions, which limit undesirable degradation. Several functional groups were grafted onto aliphatic polyesters by CuAAC without using any protection/deprotection reactions. The CuAAC is also very efficient to prepare aliphatic polyesters with various architectures as highlighted by the synthesis of graft copolymers, star-shaped copolymers and networks. This “click” chemistry has been combined with other polymerization mechanism such as ATRP in order to extend further the range of available polymers. [less ▲]

Detailed reference viewed: 28 (11 ULg)
See detailImagination et politique chez Hobbes
Herla, Anne ULg

Conference (2008, September 11)

Detailed reference viewed: 1 (0 ULg)
See detailAnalyse des curriculums officiels et implantés dans les pays de la Confemen
Lejong, Michèle ULg

Conference (2008, September 10)

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See detailMacromolecular engineering of aliphatic polyesters by ring-opening polymerization
Lecomte, Philippe ULg; Jérôme, Christine ULg; Jérôme, Robert ULg

Conference (2008, September 09)

During the past few years, a steadily increasing attention was paid to the synthesis of biodegradable and biocompatible aliphatic polyesters because of potential applications as biomaterials or as ... [more ▼]

During the past few years, a steadily increasing attention was paid to the synthesis of biodegradable and biocompatible aliphatic polyesters because of potential applications as biomaterials or as environmentally friendly thermoplastics. The first purpose of this work is to show that the modification of these aliphatic polyesters by pendant functional groups is an efficient tool to tailor the main properties, including biodegradation rate, bioadhesion, hydrophilicity, degree of crystallinity. The strategies implemented for the synthesis of aliphatic polyesters bearing pendant functional groups rely on the synthesis of g-substituted e-caprolactones followed by their ring-opening polymerization and on the chemical modification of duly functionalized aliphatic polyesters.The second part of the lecture will be dedicated to some recent examples dealing with the use of functional caprolactones to prepare various architectures such as star-shaped copolymers, graft copolymers, macrocycles and networks. [less ▲]

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See detailAbout the use of PCL/clay nanohybrid masterbatches
Benali, Samira; Brocorens, P.; Olivier, A. et al

Conference (2008, September 09)

Detailed reference viewed: 24 (9 ULg)
Peer Reviewed
See detailLa subjectivation des normes comme expérience de l’écart, de Foucault à Canguilhem
Bolmain, Thomas ULg

Conference (2008, September 09)

Detailed reference viewed: 15 (1 ULg)
See detailFoams of polycaprolactone/MWNT nanocomposites for efficient EMI shielding
Thomassin, Jean-Michel ULg; Pagnoulle, Christophe; Bednarz, Lukasz et al

Conference (2008, September 09)

Detailed reference viewed: 17 (2 ULg)
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See detailAbout pointwise smoothness of some nondifferentiable functions
Nicolay, Samuel ULg

Conference (2008, September 09)

Detailed reference viewed: 10 (0 ULg)
See detailLa prééclampsie - éclampsie
Brichant, Jean-François ULg

Conference (2008, September 08)

Detailed reference viewed: 6 (0 ULg)
See detailL'analgésie péridurale en obstétrique et ses échecs
Brichant, Jean-François ULg

Conference (2008, September 08)

Detailed reference viewed: 26 (0 ULg)
See detailFunctional nanoobjects by means of polymers
Van Butsele, Kathy; Aqil, Abdelhafid ULg; Jérôme, Christine ULg

Conference (2008, September 08)

Detailed reference viewed: 3 (1 ULg)
See detailBiomarqueurs en toxicologie: ADN oxydé et adduits à l'ADN
Pirson, Laurence ULg

Conference (2008, September 05)

Detailed reference viewed: 27 (1 ULg)
See detailInfluence des processus attentionnels sur le fonctionnement exécutif lors du vieillissement normal
Collette, Fabienne ULg; Hogge, Michaël

Conference (2008, September 04)

Detailed reference viewed: 9 (0 ULg)
See detailHarmonisation of European Construction Law : Consumers First
Kohl, Benoît ULg

Conference (2008, September 04)

Detailed reference viewed: 13 (0 ULg)
Peer Reviewed
See detailDesign Space for analytical methods. A Bayesian perspective based on multivariate models and prediction
Lebrun, Pierre ULg; Boulanger, Bruno ULg; Jullion, Astrid et al

Conference (2008, September)

Detailed reference viewed: 34 (13 ULg)
See detailDynamiques d'apprentissage inter-organisationnel dans les projets des pôles de compétitivité wallons
Rondeaux, Giseline ULg

Conference (2008, September)

En septembre 2005, le Gouvernement wallon décide d’adopter « le plan Marshall wallon » formellement baptisé sous le nom de « Plan d’Actions Prioritaires pour l’avenir wallon ». Parmi les priorités de ce ... [more ▼]

En septembre 2005, le Gouvernement wallon décide d’adopter « le plan Marshall wallon » formellement baptisé sous le nom de « Plan d’Actions Prioritaires pour l’avenir wallon ». Parmi les priorités de ce plan, s’inscrit la mise en place des pôles de compétitivité. La création de ces réseaux, visant à transformer le potentiel de connaissance, de recherche et d’innovation de la Région en valeur économique, rassemble différents acteurs (entreprises, centres de recherche privés et publics et centres de formation). Au sein des cinq pôles de compétitivité mis en place mi-2006, nous avons choisi de nous centrer en particulier sur 4 projets qui en ont émergé, que nous analysons de manière qualitative et longitudinale. La méthodologie mise en œuvre s’apuie à la fois sur l’observation-participation, et sur la réalisation d’entretiens avec des acteurs clés, dont certains menés sur le mode du story-telling. L’un des objectifs principaux de notre recherche consiste à comprendre comment les entreprises, centres de recherche et de formation parviennent à mettre en œuvre des dynamiques partenariales afin de créer des projets innovants. Pour ce faire, nous avons choisi de centrer notre regard, en particulier, sur les dynamiques d’apprentissage inter-organisationnel. Nous inspirant des travaux d’Holmqvist (2003), nous examinons ainsi les dynamiques d’ouverture et de centrage (soit les dynamiques de transition d’un apprentissage d’exploration à un apprentissage d’exploitation et vice-versa), d’internalisation et d’extension (soit l’articulation entre l’apprentissage intra- et inter-organisationnel). En particulier, nous tentons de distinguer, d’une part, quels sont les indicateurs concrets témoignant de l’occurrence de ces dynamiques ; d’autre part, nous nous attachons à voir quelles sont les actions entreprises, au niveau des partenariats, afin d’enclencher ces dynamiques –par exemple, quelles sont les décisions qui sont prises, à un moment donné du projet, pour passer d’une démarche d’exploration à une démarche d’exploitation-. Ces différents éléments de compréhension des processus d’apprentissage inter-organisationnel et des dynamiques qui les traversent, nous mèneront à identifier ultérieurement quels facteurs peuvent être assimilés à des bonnes pratiques. Les premiers résultats de cette étude, toujours en cours, fournissent d’ores et déjà divers éléments prometteurs relatifs aux étapes critiques que peuvent constituer les dynamiques en question, et les actions mises en œuvre par les partenaires des projets lors de leur occurrence. Ainsi, par exemple, parmi l’ensemble des projets, nous avons pu observer que l’étape d’internalisation des connaissances (c’est-à-dire le moment où l’entreprise se réapproprie l’apprentissage réalisé au niveau inter-organisationnel) est porteuse de conflits potentiels. Les stratégies et dynamiques de centrage et d’ouverture sont, quant à elles, portées par des catégories différentes d’acteurs. De ce fait, les décisions relatives à l’action de « centrer » sont, bien souvent, un enjeu fort, voire une source potentielle de conflit puisque la phase de centrage, où sont arrêtés des choix structurants, rime avec réduction de liberté, et peut mener à une reconfiguration du partenariat initial. Ceci implique des enjeux en termes de pertes et gains pour les différents partenaires du projet. L’on peut également voir que, sur la question de la pérennisation, les projets se positionnent différemment. Les réflexions ou actions à cet égard, porteuses de plusieurs types d’enjeux, sont le cadre de nombreux jeux d’acteurs. Nous illustrerons ces premiers constats par des exemples concrets issus des projets analysés. [less ▲]

Detailed reference viewed: 192 (8 ULg)
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See detailDeformation capacity design of stainless steel lipped channel columns
Rossi, Barbara ULg

Conference (2008, September)

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See detailMODELLING OF A DOMESTIC GAS-FIRED CONDENSING BOILER
Makaire, Danielle ULg; Ngendakumana, Philippe ULg

Conference (2008, September)

Nowadays, condensing technology is widely used in domestic heating. This paper presents a model that simulates the performance in steady-state regime of a domestic gas-fired condensing boiler. The model ... [more ▼]

Nowadays, condensing technology is widely used in domestic heating. This paper presents a model that simulates the performance in steady-state regime of a domestic gas-fired condensing boiler. The model is similar to a conventional boiler model with a dry heat exchanger at which a wet heat exchanger is added to simulate the heat recovered by condensation. Experimental parameters are used to simulate the different components. The model has been applied to a 24 kW gas-fired condensing boiler test bench available in the laboratory. According to the experimental results (at full load), the model predicts correctly the thermal efficiency of the boiler. Indeed, calculated values are in good agreement with measured values. [less ▲]

Detailed reference viewed: 131 (8 ULg)
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See detailTests and design of stainless steel lipped channel section columns
Rossi, Barbara ULg

Conference (2008, September)

Detailed reference viewed: 7 (0 ULg)
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Peer Reviewed
See detailGeneralized life and motion configurations reasoning model
Hallot, Pierre ULg; Billen, Roland ULg

Conference (2008, September)

Detailed reference viewed: 37 (11 ULg)
Peer Reviewed
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 ▲]

Detailed reference viewed: 127 (9 ULg)
Peer Reviewed
See detailDC magnetron sputtering deposition of titanium oxide nanoparticles : influence
Dreesen, Laurent ULg; Cecchet, Francesca; Lucas, Stéphane

Conference (2008, September)

Detailed reference viewed: 19 (4 ULg)
Peer Reviewed
See detailThe mining work of children under methodological plurality
Andre, Géraldine ULg; Godin, Marie; Mrsic-Garac, Sonia

Conference (2008, September)

Detailed reference viewed: 11 (1 ULg)
Peer Reviewed
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)

Detailed reference viewed: 3 (0 ULg)
See detailControl of floral transition in maize
Van Kerkhoven, Fabrizio ULg; D'Aloia, Maria ULg; Périlleux, Claire ULg

Conference (2008, September)

Flowering time in plants is controlled by a number of environmental factors, among which photoperiod plays a key role. Maize ancestors are short-day (SD) plants, but breeding programs have selected ... [more ▼]

Flowering time in plants is controlled by a number of environmental factors, among which photoperiod plays a key role. Maize ancestors are short-day (SD) plants, but breeding programs have selected genotypes whose flowering is largely autonomous and occurs after production of a constant number of leaves regardless of photoperiod. Only few flowering time genes have been identified in maize; one of them is INDETERMINATE1 (ID1), cloned from a late-flowering mutant and encoding a zinc finger transcription factor. By contrast, the genetical control of flowering by photoperiod is best understood in the long-day (LD) dicot Arabidopsis and the SD monocot rice. A key regulator is the CONSTANS gene that mediates between the circadian clock – the time-keeper of the plant – and the synthesis of flowering signals. Here we report the analysis of a CONSTANS homolog in maize, ZmCO, in SD and in LD, and in different parts of the plant. Expression of ZmCO was found to be rhythmic and to be much higher in young leaf primordia than in mature leaf blades. Striking coincidence was observed with expression of ID1. [less ▲]

Detailed reference viewed: 53 (8 ULg)
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See detailEffect of liming on the convective drying of urban residual sludges
Huron, Yoland; Salmon, Thierry ULg; Crine, Michel ULg et al

Conference (2008, September)

Detailed reference viewed: 42 (5 ULg)
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See detailCorrelation law for SMD in high viscous liquids
Vetrano, Maria-Rosaria; Lebeau, Frédéric ULg; Rambaud, Patrick et al

Conference (2008, September)

Spray characterization, i. e. a velocity map of the liquid and gaseous phases and the sizing of the liquid droplet, remains of a great importance in different industrial applications such as in the ... [more ▼]

Spray characterization, i. e. a velocity map of the liquid and gaseous phases and the sizing of the liquid droplet, remains of a great importance in different industrial applications such as in the automotive or pharmaceutical industries. Correlations capable to faster this characterization already exist. They allow the evaluation of the droplet Sauter Mean Diameter in a precise location of the spray using non-dimensional numbers involving physical and chemical properties of the liquid and the spray operative conditions. This paper concerns the possibility to include in the correlative laws also the effect of the liquid viscosity through the introduction of the Ohnesorge number (Oh). In order to achieve this goal an extensively experimentalcampaign is performed, by means of a Phase Doppler Interferometer, for size and velocity measurements in a full cone spray. Parameters as the hydraulic diameter of the nozzle, the operatingpressure and the liquid viscosity are varied in order to cover large range of Weber and Ohnesorge numbers. [less ▲]

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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)

Detailed reference viewed: 26 (6 ULg)
Peer Reviewed
See detailInfluence of rhizosphere-specific parameters on surfactin production by Bacillus subtilis.
Nihorimbere, V.; Fickers, P.; Thonart, Philippe ULg et al

Conference (2008, September)

Detailed reference viewed: 10 (0 ULg)
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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)

Detailed reference viewed: 31 (5 ULg)
See detailLa "Joconde" de Léonard de Vinci et sa description par Giorgio Vasari
Fagnart, Laure ULg

Conference (2008, August 28)

Detailed reference viewed: 41 (1 ULg)
Peer Reviewed
See detailFixed discrimination factors in diet reconstruction?
Caut, Stéphane; Das, Krishna ULg

Conference (2008, August 25)

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Peer Reviewed
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 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 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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Peer Reviewed
See detailMorphological processing in developing readers: a visual word recognition study in French
Quemart, Pauline ULg; Casalis, Séverine

Conference (2008, August)

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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 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 ▲]

Detailed reference viewed: 27 (2 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: 27 (5 ULg)
See detailDiagnostic difficulties in equine tendon ultrasonography
Busoni, Valeria ULg

Conference (2008, August)

This presentation was a key-note talk about main diagnostic difficulties encountered by the radiologists while using ultrasonography for the assessment of the proximal suspensory ligament and the distal ... [more ▼]

This presentation was a key-note talk about main diagnostic difficulties encountered by the radiologists while using ultrasonography for the assessment of the proximal suspensory ligament and the distal portion of the deep digital flexor tendon. [less ▲]

Detailed reference viewed: 28 (4 ULg)
Peer Reviewed
See detailStakeholders' Involvement as CSR analyser
El Abboubi, Manal ULg; Cornet, Annie ULg

Conference (2008, August)

Detailed reference viewed: 34 (7 ULg)
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Peer Reviewed
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 ▲]

Detailed reference viewed: 48 (1 ULg)