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See detailInspired bio- nanobiomaterials for tissue engineering
Grandfils, Christian ULg

Conference (2011, September 19)

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See detailCharacteristics of antitumor liposomess loaded with lipophilic prodrugs of methotrexate and mephalan in relation to their hemocompatibility
Kuznetsova, N.; Sevrin, Chantal ULg; Lespineux, David et al

Conference (2011, September 19)

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See detailImproving groundwater flow model conceptualisation and calibration with electrical resistivity tomography and self-potential methods
Robert, Tanguy ULg; Therrien, René; Lemieux, Jean-Michel et al

Conference (2011, September 19)

Developing a conceptual model for groundwater flow requires knowledge on the distribution of geological materials, which generally comes from geological observations on outcrops and boreholes, from the ... [more ▼]

Developing a conceptual model for groundwater flow requires knowledge on the distribution of geological materials, which generally comes from geological observations on outcrops and boreholes, from the interpretation of hydraulic tests or from geophysical surveys. The identification of spatial structures in the subsurface, such as preferential flow paths created by fractured zones, is also critical in developing a reliable conceptual model but it is difficult to achieve. Geophysical methods have been widely used to map the subsurface distribution of geological materials. Recent developments in geophysics, such as the increased use of joint inversion of geophysical and hydrogeological data, have further allowed to quantify the hydraulic conductivity of geological materials. The objective of our work is to demonstrate that the electrical resistivity tomography (ERT) and the self-potential (SP) methods can improve both the conceptual model developed for groundwater flow systems and the calibration of the corresponding groundwater flow model. The use of the two geophysical methods, combined with a groundwater flow model, is presented for a fractured limestone aquifer. The self-potential method relies on passive measurements of the ambient electrical potential at ground surface or in boreholes. One of the mechanisms responsible for the measured signal measured is the transport of dissolved ions with groundwater flow. When this electrokinetic effect is the dominant contribution, the resulting signal is called the streaming potential and it contains information about groundwater fluxes that can be useful to calibrate groundwater flow models. The solution to the SP forward problem was added to the HydroGeoSphere model, which simulates 3D groundwater flow and solute transport in porous media, including fractured geological formations. With this addition, the model can calculate the self-potential signal associated with groundwater flow, given the distribution of Darcy fluxes resulting from the forward flow solution and the electrical resistivity that is, for example, outputted by ERT data inversion. Darcy fluxes are transformed into sources of electrical current by using the streaming potential coupling coefficient. This parameter can be measured either in the laboratory or in-situ from the self-potential signal between two locations where the depth of the water table is known, such as observation wells. We used here both ERT and SP to develop a conceptual model for groundwater flow in a typical carboniferous limestone syncline in South Belgium. The rolling topography in the investigated area results from a succession of calcareous valleys (synclines) and sandstone crests (anticlines). The calcareous synclines form aquifers that are very complex since they are highly fractured and even karstified. A typical calcareous syncline has a width of about 800 m and, using ERT, we could subdivide the syncline into zones of different hydraulic conductivity, based on the degree of fracturation. The zones are oriented along the axis of the syncline and their width ranges between 10 and 40 m. The ERT profiles showed that there is a highly conductive zone, in terms of electrical conductivity, near the syncline fold axis. That zone is interpreted as being highly fractured. Other conductive zones are located symmetrically along both flanks of the calcareous syncline, with respect to the syncline fold axis. The main flow direction is along the axis of the syncline, towards a nearby river. The SP raw signals also showed that, locally, there is a second flow component perpendicular to the axis of the syncline, with groundwater flowing from the flanks of the syncline towards the axis. The conceptual groundwater flow model developed here includes the zones identified with ERT, which were then incorporated into the numerical model. The SP signals were inverted with PEST to calibrate the hydraulic conductivity value of the different zones. HydroGeoSphere was therefore used to simulate first groundwater flow and then the associated self-potential signals in an iterative process. At the start of an iteration, HydroGeoSphere solves the groundwater flow equation given one particular set of hydraulic conductivities and calculates the resulting Darcy fluxes. These fluxes are transformed into sources of electrical current assuming that the electrokinetic effect is the dominant contribution of the SP signals. HydroGeoSphere then calculates the distribution of self-potential given the sources of electrical current and the distribution of electrical resistivity. The hydraulic conductivity values of the zones are then modified and the iteration continues until the model reproduces the measured self-potential signal. [less ▲]

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See detailQuand la déception guette la mémoire des camps
Grandjean, Geoffrey ULg

Conference (2011, September 18)

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See detailStriving for « inclusion » as opposed to « integration »: exploring parents’ and professional perspectives in Belgian ECEC practice Accompanying a professional process in the French Community of Belgium
Camus, Pascale ULg

Conference (2011, September 16)

For the last years, several laws have been issued in the French Community of Belgium to enhance “inclusion” of children with special needs, but it is not sufficient. The main issue is to reach necessary ... [more ▼]

For the last years, several laws have been issued in the French Community of Belgium to enhance “inclusion” of children with special needs, but it is not sufficient. The main issue is to reach necessary conditions to support everyone (each child and his family) to feel welcome in an ECEC service whatever their characteristics should be. Several groups of professionals having various qualifications and trainings have started to join in a network and reflect on conditions necessary to welcome daily every child and family while sharing experiences, defining strong options to “co-construct” inclusive spaces open to everybody in regards to his / her competencies, interests, possibilities. While leaning on tools and research results at their disposal, they have tried to determine possibilities to take everybody into account, to make differences visible, valuable and seen as a part of the whole society. Thank to this work, they have found out conditions for a long-term partnership and for what is needed to set up and reinforce a network of local integrated actions. One of the main options worked out and linked to DECET research. [less ▲]

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See detailEvolution of wind behaviour and of its potential for wind power production in Belgium during the last 22 years : a comparison between WRF forced by NCEP2 reanalysis and WRF forced by ERA-INTERIM reanalysis
Doutreloup, Sébastien ULg; Fettweis, Xavier ULg; Erpicum, Michel ULg

Conference (2011, September 16)

The number of wind turbines in the world grows significantly every year due to politics proposing green energy productions as solutions to mitigate climate change effects. However, this kind of energy is ... [more ▼]

The number of wind turbines in the world grows significantly every year due to politics proposing green energy productions as solutions to mitigate climate change effects. However, this kind of energy is dependent on the weather. This implies that the wind production is irregular at a very short time scale. But the short time scale availability of the wind-based energy is important to the producers of energy as well as to the electric grid managers because the wind energy production can rise or fall rapidly which creates some financial and voltage variations. For these reasons, we study the past evolution of the availability of the wind quantity by analysing the intermittence of the wind speed in Belgium during the last 22 years (1989-2010). To reach this goal, we use the regional model WRF (Weather and Research Forecast model) developed by the UCAR community users. In a first time, the WRF model is forced by the NCEP2 reanalysis outputs to obtain a regionalisation of the weather conditions over a domain centred on Belgium at a resolution of 10 km. This resolution allows to capture the minute-based time scale variability of wind speed and consequently the irregular behaviour of the wind power production. In a second time, the WRF model is forced by the ERA-Interim reanalysis outputs with the same configuration. To obtain a value of the wind intermittence, we calculate the persistence of a wind blowing continuously with a minimum speed of 1 ms-1, then the persistence of a wind blowing continuously with a minimum speed of 2 ms-1, etc. The persistence of the wind speed and its evolution over 22 years are characterised by : (a) the mean wind speed over a fixed period (monthly, seasonally, … ), (b) the mean duration of a wind speed above x ms-1 over the same fixed period and (c) the evolution of (a) and (b) during the studied period. This analysis is made with the outputs of WRF-NCEP2 and with the outputs of WRF-Interim allowing to evaluate the impact of forcing fields into WRF-based wind climatology. [less ▲]

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See detailPortfolio : un outil d'apprentissage et de développement de la réflexivité
Pirard, Florence ULg

Conference (2011, September 16)

La communication traite de l’expérimentation d’un dispositif et d’une démarche d’apprentissage et d’évaluation à partir de portfolio dans la formation universitaire d’étudiants en master en Sciences de ... [more ▼]

La communication traite de l’expérimentation d’un dispositif et d’une démarche d’apprentissage et d’évaluation à partir de portfolio dans la formation universitaire d’étudiants en master en Sciences de l’éducation engagés dans une nouvelle option « éducation des jeunes enfants et formation des professionnels du champ » (Université de Liège, Belgique). Ce dispositif propose un ensemble coordonné d’activités à partir desquels les étudiants, pour la plupart déjà bénéficiaires d’une formation de base d’enseignant, sont amenés d’abord à expliciter par écrit et de manière régulière leurs représentations du jeune enfant et des conditions éducatives à lui assurer en services EAJE ; ensuite à analyser l’évolution de ces représentations au fil du temps. Expérimentée dans le cadre de la formation des enseignants (Tardif, 2006 ; Deum & Vanhulle, 2008 ; Scallon, 2009 ; Roegiers, 2010), la démarche par portfolio peut aussi initier les étudiants en Sciences de l’Education à documenter et analyser leurs apprentissages relatifs à l’éducation des jeunes enfants dans les services éducatifs EAJE. Enrichie de référents liés à différents courants pratiques et théoriques, elle peut les aider à dépasser les risques d’une vision uniforme et normative de l’éducation. Elle leur fait expérimenter une pensée réflexive (Peeters, 2008 ; Urban, 2008 ; Peeters, Vandebroeck, 2011) à partir d’une diversité de situations éducatives toujours contextualisées. A l’image des professionnel-le-s de l’enfance dont il est de plus en plus attendu de « documenter » leurs pratiques éducatives (Rinaldi, 2006 ; Galardini, 2009 ; Picchio, Musati, 2010) et sur cette base, de partager leurs points de vue à propos de l’éducation avec l’ensemble des partenaires (les enfants, les familles, les autres professionnel-le-s, les mandataires publics, etc.), il est ici demandé aux étudiants en Sciences de l’Education, futurs encadrants ou formateurs potentiels, de « documenter » et de rendre compte de leur apprentissage au sujet de questions et de pratiques d’éducation de jeunes enfants. L’analyse des portfolios des étudiants donne à voir des transformations dans leurs représentations du jeune enfant et les conditions éducatives à mettre en œuvre dans les services EAJE. Elle montre, chez eux, la découverte d’une spécificité éducative différente de celle mise en œuvre dans le champ scolaire et à partir de laquelle peuvent être envisagées d’autres manières d’agir et de penser (ex. : la collaboration avec les familles). Elle développe, chez eux, une réflexivité dans l’analyse de situations de vie quotidiennes mises en œuvre dans les services EAJE. Dans de nombreux cas, elle montre les indices d’un bouleversement dans la dynamique identitaire : à partir d’une remise en question personnelle, ils sont pour la plupart amenés à repenser leur manière de définir l’éducatif et à mieux cerner ses dimensions professionnelles dès le plus jeune âge. [less ▲]

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See detailGender differences in Variability and Extreme Scores
Baye, Ariane ULg; Lafontaine, Dominique ULg; Monseur, Christian ULg

Conference (2011, September 15)

This study examines academic gender differences in variance and at the extreme tails of score distributions in reading, mathematics and science. Ten databases from IEA and PISA were used to analyse such ... [more ▼]

This study examines academic gender differences in variance and at the extreme tails of score distributions in reading, mathematics and science. Ten databases from IEA and PISA were used to analyse such gender differences in an international perspective from 1995 to 2009. Differences in standard deviation, effect size and variance ratios were computed. The main results may be summarised as follows. The gender differences at the extreme tails of the distribution are often more substantial than the gender differences at the mean, which may suggest the need to rethink education policies for low-achieving boys in reading and for high-achieving girls in mathematics and science. The “greater male variability hypothesis” is confirmed, although our results suggest that this may depend on the test content, the study design and the computed statistics. [less ▲]

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See detailWaterjet dissection and vacuum-assisted resection of supratentorial meningioma
Martin, Didier ULg

Conference (2011, September 15)

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See detailRegard médiatisé sur la prise en charge des adultes ayant été victime d'abus sexuel infantile. Festen de Thomas Vinterberg: une invitation à la réflexion
Bullens, Quentin ULg; Dechamps, Michel

Conference (2011, September 14)

Le travail de prise en charge d’adultes ayant été victimes d’abus sexuel dans l’enfance peut nécessiter une vision élargie de l’étendue des conséquences d’un tel abus. Bien entendu, il n’est pas possible ... [more ▼]

Le travail de prise en charge d’adultes ayant été victimes d’abus sexuel dans l’enfance peut nécessiter une vision élargie de l’étendue des conséquences d’un tel abus. Bien entendu, il n’est pas possible d’élaborer un parcours type pouvant servir de repère pour le clinicien. Toutefois, le film de Vinterberg auquel nous aurons recours, s’il n’illustre pas un parcours type, met en scène un continuum de vécus et de souffrances au travers l’histoire de jumeaux (frère et soeur) ayant été victimes d’abus sexuel de la part de leur père. Le film place les personnages dans leur réalité familiale et illustre, plus ou moins symboliquement, différentes étapes qu’aura bien souvent à traverser la victime d’un tel abus. Loin de vouloir tirer de cet apport une seule et unique marche à suivre, nous pensons toutefois que le film revêt des qualités didactiques importantes en ce qu’il invite, au travers de ce continuum, à penser l’agression sexuelle infantile. A partir des deux vécus aux antipodes illustrés par le film, nous montrerons donc comment ceux-ci peuvent servir à penser le parcours des victimes et leur prise en charge. Nous aborderons pour ce faire des thèmes tels que le sentiment de solitude, les différences de genre, les étayages extérieurs, la vie conjugale et parentale, le processus de dévoilement, etc. En outre, c’est toute la réalité familiale qui sera envisagée. Au-delà des victimes directes, nous nous intéresserons donc également à la fratrie n’ayant pas connu de tels passages à l’acte mais ayant grandi dans une « famille abusive ». Nous nous arrêterons aussi sur la place de l’auteur et celle de son conjoint. Dans une première partie nous proposons donc de visionner Festen. Festen est un film Danois sorti en 1998 de Thomas Vinterberg (réalisation et scénario) et Mogens Rukov (scénario) avec entre autres Ulrich Thomsen dans le rôle de Christian, Henning Moritzen dans le rôle de Helge (le père). Le film remporte de nombreux prix dont celui du jury au festival de Cannes de 1998. L’histoire se déroule dans la demeure familiale dans laquelle Helge, le patriarche, fête ses soixante ans. De très nombreux invités sont présents et Christian, l’un des fils de Helge, profite d’un discours à l’attention de son père pour révéler les abus sexuels que ce dernier lui a fait subir ainsi qu’à sa soeur qui s’est récemment suicidée… Après ce visionnage, nous proposerons de recueillir les impressions et commentaires des participants suite à ce film qui laisse généralement peu indifférent. Toujours dans l’idée d’un échange, nous présenterons alors les différentes réflexions que le film nous a inspirées en regard de notre clinique liée à la prise en charge d’adultes ayant été victimes dans l’enfance mais aussi au visionnage que nous avons eu l’occasion d’en faire avec des victimes dans le cadre d’un groupe de parole. Enfin, ayant permis de mettre en réflexion l’agression sexuelle infantile et l’étendue de ses conséquences, nous pensons que le média utilisé pourra rester un outil de référence, par exemple dans le cadre d’activités didactiques et ce, quelle qu’en soit l’orientation. [less ▲]

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See detailLes allergènes recombinants
GADISSEUR, Romy ULg

Conference (2011, September 13)

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See detailLes allergènes recombinants
GADISSEUR, Romy ULg

Conference (2011, September 13)

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See detailIndividualiser la détention? L’accompagnement face à la gestion des risques
Dubois, Christophe ULg

Conference (2011, September 13)

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See detailL'innovation et la compétitivité des territoires
Halleux, Jean-Marie ULg

Conference (2011, September 13)

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See detailEnfants présumés victimes d’agression sexuelle : les cliniciens doivent-ils s’adresser aux faits et se former aux techniques d’entrevues non-suggestives ?
Gérard, Marc; Demaegdt, Christophe; Piavaux, Caroline et al

Conference (2011, September 13)

RAPPORT D’EXPÉRIENCES, DE RECHERCHE-ACTION ET ÉTAT DE LA QUESTION Nos recherches, antérieurement décrites, mettaient en évidence un grand nombre de difficultés de communication entre les intervenants ... [more ▼]

RAPPORT D’EXPÉRIENCES, DE RECHERCHE-ACTION ET ÉTAT DE LA QUESTION Nos recherches, antérieurement décrites, mettaient en évidence un grand nombre de difficultés de communication entre les intervenants psycho-médico-sociaux et les enfants présumés victimes d’abus sexuels. L’analyse de contenu des échanges textuels s’est heurtée, chez les cliniciens, à nombre d’arguments et résistances que nous rappelons succinctement. Les observations précises qui furent réalisées révélèrent chez les professionnels, même expérimentés, des problèmes de changement de thème, de questions inductives et suggestives, d’évitement du sujet en cours d’entretien. A tel point que de telles entrevues ne clarifiaient que rarement l’orientation à donner à la situation ou risquaient de compromettre les suites judiciaires de celle-ci. D’une manière générale, nous avons observé que la formation habituelle des cliniciens, même thérapeutes, ne pouvait suffire. Or nous observons qu’un grand nombre de suspicions d’abus sexuels ne sont pas d’emblée judiciarisés. Une recherche d’aide et de conseils précède souvent la plainte. Mais cette première écoute engage une lourde et double responsabilité : celle d’une sur-réaction sur des bases très peu étayées ou celle du renvoi au silence d’un enfant qui tentait de dire. L’exposé sera documenté par l’étude rétrospective de l’ensemble des dossiers (n=53) ouverts au Centre SOS Enfants en 2009. On constate que plus de la moitié des dossiers ne sont pas encore l’objet d’un dépôt de plainte, et ceux qui le sont n’ont pas tous bénéficié d’une audition policière vidéo-filmée. Les abus intrafamiliaux paraissent clairement plus difficiles à amener à la connaissance des autorités judiciaires. L’ensemble des éléments mis en évidence et l’importance des enjeux nous a amené, depuis 2006, à nous engager dans divers partenariats et dans un processus de recherche-action. Les partenariats dans le cadre des programmes européens « A gis » et « Se former ensemble » ont catalysé une coopération entre équipes spécialisées et services de formation de la police. La coopération de nos services avec ceux du Québec (CE MV de Montréal, Police Nationale du Québec) a permis une sensibilisation de cliniciens (psychologues et pédopsychiatres) volontaires aux techniques validées d’entrevue non-suggestive. Dans ce cadre, plusieurs entretiens cliniques ont été vidéo-filmés avant le cycle de sensibilisation, et de nombreux autres après, tentant d’intégrer au mieux les critères recommandés. Des séances d’intervision et de supervision ont été organisées. Cette pratique, comportant l’analyse de séquences réelles, nous est apparue irremplaçable. Elle appelle la question d’une formation nécessaire et adaptée aux cliniciens de l’enfance. Les exposés suivants décrivent le processus de l’intérieur et les cliniciens questionnent la méthode et l’expérience. Ils illustrent ensuite concrètement leur propos par une pratique en pleine évolution. Reste la question, qui peut faire polémique, de ne pas réserver l’entrevue portant sur les faits d’abus à l’enquête policière et d’amorcer parfois leur élucidation dans des contextes cliniques afin d’aider au mieux les enfants victimes. mardi 13 septembre Retour d’expérience de cliniciens autour d’un protocole d’entrevue d’investigation non-suggestif avec des enfants présumés victimes d’abus sexuel. A partir de l’expérience de cliniciens des équipes SOS -enfants, cette communication vise à présenter les questions théoriques et pratiques soulevées par l’écoute des faits auprès d’enfants présumés victimes d’abus sexuels au sein d’une équipe pluridisciplinaire de première ligne. Et ce, dans le contexte spécifique de la Belgique francophone où le signalement en justice n’est pas systématique. Ecouter, ce n’est pas laisser parler. Toute écoute, même celle qui se veut la moins directive ou suggestive possible, oriente la dynamique interlocutoire. La façon d’écouter a nécessairement une incidence sur la signification que l’enfant attribue à la relation qui s’installe, sur le contenu de la parole de l’enfant, et sur les actes que l’équipe sera amenée à poser. En Belgique, le recueil exhaustif des faits liés à l’abus sexuel est couramment utilisé dans les investigations policières, mais il reste délicat à manier lors des prises en charge psycho-sociales. Classiquement, et pour des raisons que nous ne pouvons développer ici, les références théoriques qui sous-tendent les pratiques d’écoute des cliniciens s’inscrivent dans une tradition thérapeutique, d’orientation psycho-dynamique et/ou systémique. Dans ces deux approches, la matérialité des actes abusifs reste difficile à penser ; ils ne seraient que le théâtre où les conflits psychiques se déploient, où les patterns relationnels se rejouent. Mais, au-delà des principes théoriques accordant peu d’importance aux faits proprement-dits, un certain nombre d’autres arguments peuvent expliquer le refus, le désintérêt ou la prudence à aborder précisément la nature des agressions sexuelles, dans ce qu’elles ont de plus troublant et dérangeant pour celui ou celle qui les rapporte… et pour celui ou celle qui les écoute : de la peur de raviver le traumatisme chez la victime aux défenses du thérapeute le préservant d’une confrontation trop douloureuse à une réalité qu’il préfère ne connaître vraiment. Si, comme nous venons de le dire, la question de l’approche précise des faits et de leur réalité ne se pose pas ou peu lors de prises en charge exclusivement thérapeutiques, les missions spécifiques des équipes SOS-Enfants (bilan, évaluation, mise en place de mesures de protection telle que l’éloignement, …) et, dès lors, le statut du psychologue clinicien au sein de celles-ci, amènent ce dernier à devoir se positionner notamment par rapport à la matérialité des faits dénoncés ou suspectés, ainsi qu’à la crédibilité de la parole de l’enfant. En effet, dans la plupart des situations qui aboutissent dans les équipes SOS -Enfants, la demande principale, et l’attente urgente même, des professionnels ou des adultes responsables de l’enfant, est avant tout de savoir si oui ou non les faits révélés sont avérés. Cela ne répond pas à un simple besoin de savoir, mais bien à la nécessité de pouvoir décider des démarches à entreprendre (plainte à la police, éloignement familial, rupture avec tel ou tel proche, ...). Face à une telle responsabilité, la nécessité de penser l’approche précise des faits lors des premiers entretiens s’est faite chaque fois plus présente. C’est dans ce cadre que quelques cliniciens des équipes SOS-enfants de la Communauté française de Belgique ont souhaité être sensibilisés aux techniques d’entretiens non-suggestifs inspirées de la traduction française du protocole d’entrevue d’investigation NICH D de Cyr et Lamb (2009). Selon ces auteurs, l’utilisation de ce protocole d’entretiens d’investigation multiplie par 3 le nombre de questions ouvertes, et augmente le nombre de détails rapportés par les enfants. Il apparaît que l’encouragement du rappel libre de l’enfant (avec indice, segmentation de temps, …) peut dans certaines circonstances permettre d’obtenir une description précise de l’abus sexuel vécu par l’enfant. Cependant, la dimension strictement instrumentale reste insuffisante pour valider une technique et l’intégrer aux règles de métier si celle-ci ne fait pas l’objet d’accords normatifs par les praticiens concernés. La sensibilisation à l’usage de cet outil n’a fait qu’alimenter davantage les interrogations déjà présentes chez les cliniciens des équipes SOS -Enfants : l’investigation des faits se justifie-t-elle pour celui ou celle qui occupe une fonction de clinicien ? Quels sont les arguments retenus pour étayer la réponse à cette question ? Quel rapport entretenons-nous avec la matérialité des faits dans les premiers entretiens et plus largement dans les prises en charge des enfants… Quel rôle assumons-nous alors quant au secteur policier et judiciaire ? La communication tentera de rendre compte de certains cheminements individuels amorcés autour de l’investigation des faits, de ce qui fait désormais consensus pour ces cliniciens de première ligne, et de ce qui reste en tension. Globalement, il ressort que dans certaines situations, une investigation fine des actes abusifs est un préalable à la construction de projets de soins, et éventuellement à une écoute qui puisse être thérapeutique. Illustration d’options techniques fréquemment utilisées lors de premiers entretiens avec des enfants présumés victimes d’abus sexuel. La présentation de séquences issues de premiers entretiens vidéo-filmés avec des enfants illustreront la variété des techniques fréquemment utilisées par les cliniciens de première ligne. Il apparaît que ces derniers ont recours à des techniques sous-tendues par un souci de compréhension du rapport aux faits de la présumée victime. Lors du premier entretien avec des enfants présumés victime, l’investigation des faits et la recherche d’un dévoilement dans un souci protectionnel entre bien souvent en tension avec la volonté de co-construire une rencontre qui se veut soutenante quant au ressenti (par opposition au vécu) de l’enfant. Un compromis technique est à élaborer à chacune des nouvelles rencontres. Dans un souci de recherche des faits, le séquençage indiciel et temporel (Cyr et Lamb, 2009) permet d’augmenter la description de détails dans les situations propices au dévoilement. Ces techniques de communication non suggestives offrent une occasion d’en dire plus lorsque l’objectif retenu est l’obtention de détails et des précisions sur la nature exacte des actes. Outre les limites identifiées par les auteurs du protocole, il est fréquent d’être confronté à des résistances, freins et réticences au dévoilement. De tels contextes supposent dès lors d’adopter des techniques qui s’éloignent des présupposés du protocole d’entrevue non-suggestive d’investigation NICH D, et d’en adopter d’autres sous-tendues par un souci de compréhension du rapport aux faits de la présumée victime. Lorsque l’enfant n’aborde pas de faits abusifs, certaines techniques suggestives (Mugnier, 2004, 2010 ; Cirillo & Di Blasio, 2005) permettent de le soutenir là où les procédés non suggestifs se sont révélés inopérants. Ce qui, dans le contexte d’un tel protocole apparaît comme de la suggestion, peut alors être perçu comme une aide précieuse pour lever les freins et les silences. Les auteurs soutiendront l’intérêt d’élucider avec l’enfant la rationalité des freins qui peuvent exister au dévoilement. Cette rationalité de la réticence au dévoilement existe au regard du fonctionnement psychique de l’enfant (sentiment de honte, de gêne, culpabilité, monstruosité, effets du clivage,…), mais aussi au regard d’enjeux intrafamiliaux ou interpersonnels (conflit de loyauté, peur des représailles, ambivalence, syndrome de Stockholm…). Ce souci de compréhension du rapport aux faits d’abus de la présumée victime, qui dans bien des situations favorise un dévoilement ultérieur, en passe par l’adoption de techniques issues de références psychothérapeutiques. Au final, l’utilisation d’un tel protocole semble donc servir la clinique, pour autant que la clinique puisse intégrer un tel protocole dans un champ de réflexions étendu, qui participe à la construction d’une compréhensionholistique du phénomène abusif connu par l’enfant. [less ▲]

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See detailProjectively equivariant quantization over R^{p|q}
Radoux, Fabian ULg

Conference (2011, September 13)

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See detailMass spectrometry as an evolutive tool for toxinology: from sequencing to toxin shapes
Quinton, Loïc ULg; Gilles, Nicolas; Echterbille, Julien ULg et al

Conference (2011, September 12)

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See detailDe l’apport de la théorie du Self de Winnicott à la construction de la Tâche Du Château pour l’exploration du vécu de l’abus sexuel avec l’enfant victime.
Bullens, Quentin ULg; Dechamps, Michel

Conference (2011, September 12)

A l’inverse de Sàndor Ferenczi, Donald Winnicott est probablement loin d'être l'auteur d'orientation psychanalytique le plus cité en matière d'abus sexuel. Pourtant, dans un de ses essais portant sur la ... [more ▼]

A l’inverse de Sàndor Ferenczi, Donald Winnicott est probablement loin d'être l'auteur d'orientation psychanalytique le plus cité en matière d'abus sexuel. Pourtant, dans un de ses essais portant sur la communication (1963a), il évoque un dilemme présent chez l’artiste et relevant de la co-existence d’un besoin urgent de communiquer et d’un besoin, encore plus urgent, de ne pas être trouvé. Nous montrerons comment un tel dilemme, considéré dans son rapport à la théorie du Self, offre un cadre théorique puissant pour la compréhension et la prise en charge des victimes d'abus sexuel. Pour ce faire, nous présenterons donc ce dilemme dans son rapport avec ce noyau de la personnalité, le Self (Winnicott, 1963a). Nous nous intéresserons à la manière dont ce dernier peut communiquer et à la manière dont il doit être protégé des intrusions. Nous verrons comment l’auteur envisage ses défenses et les conséquences qu’aurait une violation de ce noyau Self par une communication qui se glisserait au travers des défenses (Winnicott, 1960a, 1960b, 1963a). Ce dernier cas de figure, même s’il n’est pas abordé comme tel par Winnicott, nous semble illustrer le vécu de l’enfant victime d’abus sexuel. Nous verrons comment les difficultés que ce dernier peut rencontrer donnent à ce dilemme l’allure d’un paradoxe au-dedans duquel le symptôme semble être la seule issue possible. Ensuite, nous aborderons la manière dont les apports de Winnicott (1958, 1963b, 1971) nous permettent de penser la prise en charge des enfants victimes en suivant, dans la constitution même du cadre thérapeutique, les fonctions naturelles de la mère et comment un tel cadre permet de dépasser cette forme pathologique du dilemme évoquée ci-dessus. Au moyen d'exemples, nous montrerons comment ce cadre théorique nous permet de penser les faits cliniques tels que la méta-révélation (Bullens, 2010), le viol psychique (Van Gijseghem & Gauthier, 1996), etc. et les faits protectionnels (notamment en lien avec les questions d'évaluation et les méthodes d'entrevue d'investigation dites non-suggestives). Enfin, nous présenterons l'état de nos travaux quant à la construction d'un outil d'exploration métaphorique de l'abus sexuel pour la prise en charge des enfants victimes. En effet, confronté sur le plan pratique aux difficultés d'évocation, dans la thérapie, du vécu lié à l'abus sexuel et ce, consécutivement aux bouleversements dus à l'abus en tant que tel mais aussi à la période de dévoilement et à la phase d'intervention protectionnelle ; et nourrit théoriquement par le cadre conceptuel offert par Winnicott : nous avons créé un outil d'exploration métaphorique de l'abus sexuel, la Tâche Du Château. Nous présenterons aux participants les étapes de création de l'outil en rapport avec les référents théoriques qui, s'ils s'inspirent en grande partie de Winnicott, se revendiquent aussi de l'approche structuraliste des frontières familiales telle qu'élaborée par Salvador Minuchin (1979). Nous illustrerons la Tâche Du Château par ses consignes et sa méthode de passation et présenterons les résultats de notre phase pré-test. Nous nous attarderons plus longuement sur l'un d'eux au moyen d'une vignette clinique. Celle-ci nous permettra de comprendre en quoi la Tâche Du Château permet une exploration respectueuse de l'enfant (en regard également du cadre théorique), et ce, dans une co-construction avec le thérapeute. Nous illustrerons l'importance des liens pouvant être établis entre la matérialité des faits et l'exploration métaphorique proposée à l'enfant. Ce dernier constat nous amènera aux perspectives de développement futur de la Tâche Du Château et aux risques qui s’y rapportent. [less ▲]

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See detailNew Professions in the Socio-Legal Field: An Incomplete Institutionalisation?
Bastard, Benoit; Dubois, Christophe ULg

Conference (2011, September 10)

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See detailLa subjectivité : lectures critiques entre grammaire et texte
[Lttr 13]; Badir, Sémir ULg; Polis, Stéphane ULg et al

Conference (2011, September 09)

Dans cette contribution, nous proposons une réflexion critique sur la notion de subjectivité qui constitue un « beau cas », voire un cas d’école, pour observer la manière dont la pensée linguistique opère ... [more ▼]

Dans cette contribution, nous proposons une réflexion critique sur la notion de subjectivité qui constitue un « beau cas », voire un cas d’école, pour observer la manière dont la pensée linguistique opère le réglage théorique entre l’analyse de faits de grammaire et l’étude de leurs textualisations. [less ▲]

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See detailComparative study of the incidence and risk factors of retained placenta in dairy and beef cows in Wallonia
Hanzen, Christian ULg; Vallée, Claire; Simon, Annik ULg et al

Conference (2011, September 09)

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See detailInsights into the ancient methods of preparation of Prussian blue pigments by high-resolution powder diffraction and PDF analysis
Samain, Louise ULg; Martinetto, Pauline; Bordet, Pierre et al

Conference (2011, September 09)

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See detailReproduction performances of Belgian Blue cattle in Wallonia
Hanzen, Christian ULg; Simon, Annik ULg; Theron, Léonard ULg et al

Conference (2011, September 09)

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See detailNEW TRENDS IN VALIDATION OF ANALYTICAL METHODS
Rozet, Eric ULg; Hubert, Philippe ULg

Conference (2011, September 08)

Analytical method validation is a mandatory step to evaluate the ability of developed methods to provide accurate results for their routine application in order to trust the critical decisions that will ... [more ▼]

Analytical method validation is a mandatory step to evaluate the ability of developed methods to provide accurate results for their routine application in order to trust the critical decisions that will be made with them. Even if several guidelines exist to help perform analytical method validations (ICH Q2R1 [1], USP <1225> [2], …) there is still the need to clarify the meaning and interpretation of analytical method validation criteria and methodology. Indeed, actually method validation is mostly realised as the traditional check list implementation of e.g. the ICH Q2R1 or USP <1225> method validation requirements. However, within the trend of Quality by Design [3], there is the need to switch from this traditional vision to an analytical method validation really adding value and providing a high level of assurance of analytical methods results reliability. Yet, different interpretations can be made of the validation guidelines as well as for the definitions of the validation criteria. This will lead to diverse experimental designs implemented to try fulfilling these criteria. Finally, different decision methodologies can also be interpreted from these guidelines. Therefore, the risk that a validated analytical method may be unfit for its future purpose will depend on a personal interpretation of these guidelines. The objective of this presentation is thus to show that analytical method validation should be planned and performed by first starting with the end in mind: what is the objective of the analytical methods under study? In such a way analytical method validation is coherent with the actual Quality by Design regulatory expectations. The risk of having validated an analytical method unfit for its purpose is strongly reduced as well as the risk of generating Out of Specification (OOS) results due to an unfit method. References [1] International Conference on Harmonisation (ICH) of Technical Requirements for registration of Pharmaceuticals for Human Use, Topic Q2 (R1): Validation of Analytical Procedures: Text and Methodology, Geneva, 2005. [2] USP 33 NF 28 S1, U.S. Pharmacopeia, 2007. USP–NF General Chapter <1225>. [3] International Conference on Harmonisation (ICH) of Technical Requirements for Registration of Pharmaceuticals for Human Use, Topic Q8(R2): Pharmaceutical development, Geneva, 2009. [less ▲]

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See detailNew Methodology for the Development of Chromatographic Methods
Rozet, Eric ULg; Debrus, Benjamin ULg; Lebrun, Pierre ULg et al

Conference (2011, September 08)

As defined by ICH [1] and FDA, Quality by Design (QbD) stands for “a systematic approach to development that begins with predefined objectives and emphasizes product and process understanding and process ... [more ▼]

As defined by ICH [1] and FDA, Quality by Design (QbD) stands for “a systematic approach to development that begins with predefined objectives and emphasizes product and process understanding and process control, based on sound science and quality risk management”. A risk–based QbD–compliant approach is proposed for the robust development of analytical methods. This methodology based on Design of Experiments (DoE) to study the experimental domain models the retention times at the beginning, the apex and the end of each peak corresponding to the compounds of a mixture and uses the separation criterion (S) rather than the resolution (RS) as a Critical Quality Attribute. Stepwise multiple linear regressions are used to create the models. The estimated error is propagated from the modelled responses to the separation criterion (S) using Monte Carlo simulations in order to estimate the predictive distribution of the separation criterion (S) over the whole experimental domain. This allows finding ranges of operating conditions that will guarantee a satisfactory quality of the method in its future use. These ranges define the Design Space (DS) of the method. In chromatographic terms, the chromatograms processed at operating conditions within the DS will assuredly show high quality, with well separated peaks and short run time, for instance. This Design Space can thus be defined as the subspace, necessarily encompassed in the experimental domain (i.e. the knowledge space), within which the probability for the criterion to be higher than an advisedly selected threshold is higher than a minimum quality level. Precisely, the DS is defined as “the multidimensional combination and interaction of input variables (e.g., material attributes) and process parameters that have been demonstrated to provide assurance of quality” [1]. Therefore, this DS defines a region of operating conditions that provide prediction of assurance of quality rather than only quality as obtained with traditional mean response surface optimisation strategies. For instance, in the liquid chromatography there is a great difference in e.g. predicting a resolution (RS) higher than 1.5 vs. predicting that the probability for RS to be higher than 1.5 (i.e. P(RS> 1.5)) is high. The presentation of this global methodology will be illustrated for the robust optimisation and DS definition of several liquid chromatographic methods dedicated to the separation of different mixtures: pharmaceutical formulations, API and impurities/degradation products, plant extracts, separation of enantiomers, … References [1] International Conference on Harmonisation (ICH) of Technical Requirements for Registration of Pharmaceuticals for Human Use, Topic Q8(R2): Pharmaceutical development, Geneva, 2009. Acknowledgements A research grant from the Belgium National Fund for Scientific Research (F.R.S-FNRS) to E. Rozet is gratefully acknowledged. [less ▲]

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See detailEstime de soi, comportement à risque et qualité de vie chez des adolescents de 13 à 18 ans
Etienne, Anne-Marie ULg; Riga, Sébastien; Missotten, Pierre ULg et al

Conference (2011, September 08)

L’objectif de l’étude était d’évaluer les capacités de changement d’un adolescent présentant un comportement à risque : être fumeur. Septante adolescents (13 à 18 ans) ont été recrutés : le groupe ... [more ▼]

L’objectif de l’étude était d’évaluer les capacités de changement d’un adolescent présentant un comportement à risque : être fumeur. Septante adolescents (13 à 18 ans) ont été recrutés : le groupe expérimental comprend trente-sept jeunes fumeurs ; le groupe contrôle trente-trois jeunes non -fumeurs. Les fumeurs ont été vus trois fois alors que les sujets du groupe contrôle ont été vus 2 fois sur une période de trois mois. Les principaux questionnaires sont : un questionnaire sociodémographique, l’échelle d’estime de soi de Rosenberg, l’Inventaire Systémique de Qualité de Vie pour Adolescents, trois questions ouvertes qui portent sur le changement, les ressources et la confiance en soi. Les techniques d’intervention sont la balance décisionnelle de l’entretien motivationnel et l’implémentation d’un comportement. Les résultats montrent un effet des entretiens motivationnels chez les fumeurs sur la perception d’être prêt au changement (p = 0,002), sur une meilleure perception de leurs ressources (p<0,001) et sur une augmentation de leur confiance en leur capacité de changement (p = 0,02). L’estime de soi et le score d’écart de qualité de vie restent stables pendant les trois mois à l’exception du score de but des jeunes fumeurs. L’implication clinique de ces résultas sera discutée lors de la présentation orale. [less ▲]

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See detailWild boar and roe deer monitoring with road-based surveys and thermal imaging
Morelle, Kevin ULg; Lejeune, Philippe ULg

Conference (2011, September 08)

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See detailWomen in sciences and technologies
Jaminon, Martine ULg

Conference (2011, September 07)

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See detailUpdate on Bovine neonatal pancytopenia non Pregsure cases
Theron, Léonard ULg; Rollin, Frédéric ULg; Hanzen, Christian ULg et al

Conference (2011, September 07)

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See detailSur les espaces de Hölder ponctuels généralisés
Kreit, Damien ULg

Conference (2011, September 06)

We study a generalization of the well-known pointwise Hölder spaces. This generalization is based on another generalization of the (global) Hölder spaces (that we already studied and exposed on another ... [more ▼]

We study a generalization of the well-known pointwise Hölder spaces. This generalization is based on another generalization of the (global) Hölder spaces (that we already studied and exposed on another seminar). We show three main characterizations of these spaces, such as a characterization by the decay of the wavelet coefficients of their elements. [less ▲]

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See detailPhenotype Classification of Zebrafish Embryos by Supervised Learning
Jeanray, Nathalie ULg; Marée, Raphaël ULg; Pruvot, Benoist ULg et al

Conference (2011, September 02)

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See detailLocal food systems in Walloon Region (Belgium): definition and trends in supply and demand
Comps, Samuel ULg; Claustriaux, Jean-Jacques ULg; Vandercammen, Marc et al

Conference (2011, September 02)

Local food systems are one solution to promote local products in different ways and particularly by bringing together producers and consumers. This paper follows different purposes. The term “local food ... [more ▼]

Local food systems are one solution to promote local products in different ways and particularly by bringing together producers and consumers. This paper follows different purposes. The term “local food systems” will be defined as systems mobilizing not more than one intermediate person in a local area, where the exchanges must be monetized and where a relationship between the producer and the consumer is established. Then, a classification of the various initiatives of local food systems will be proposed. Thereafter the results of two studies conducted in the Walloon Region will be presented. The first study was conducted in Wallonia and Brussels in 2010 by the CRIOC to assess consumers’ perceptions and expectations of local products marketing using local food systems. The second one was conducted in 2010 to establish an inventory of local food systems in the Province of Namur. It had four main objectives: to describe categories of local food systems used, to give an overview of products supply, to understand main difficulties encountered by producers and to give benchmarks for the installation. The paper concludes that local food systems provide a wide diversity of selling networks which can be used. However, it is not easy for producers to meet consumers’ needs for local agricultural produce. The paper also puts emphasis on the necessity of including many fields of action to develop local food systems. [less ▲]

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See detailPrésentation du projet de Spin-off IMONIC à des investisseurs potentiels
Goffin, Dorothée ULg

Conference (2011, September 02)

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See detailStainless steel with robust anibacterial activiy based on a versatile and bio-inspired strategy
Faure, Emilie ULg; Lecomte, Philippe ULg; Vreuls, Christelle ULg et al

Conference (2011, September 01)

The synthesis of a poly(methacrylamide) bearing 3,4-dihydroxyphenylalanine inspired from the chemical composition of mussel adhesives will be presented. This homopolymer is designed to insure a multilayer ... [more ▼]

The synthesis of a poly(methacrylamide) bearing 3,4-dihydroxyphenylalanine inspired from the chemical composition of mussel adhesives will be presented. This homopolymer is designed to insure a multilayer film growth by covalent coupling during the layer-by-layer building with a homopolymer containing amino groups. The film cross-linking is initiated by adequately controlling both the redox state of the polymer and the pH of the solutions. This cross-linking is evidenced by solid-state 13C NMR with the occurrence of a typical signal of imine, traducing the Schiff base formation during film growth. The same coupling reaction is implemented for grafting an antibacterial peptide, Nisin, on a stainless steel substrate. Antibacterial activity against Bacillus subtilis is preserved even after long immersion time, as the result of the peptide covalent anchoring on the surface. All the processing steps, including the synthesis of the polymers and the peptide grafting, are performed in aqueous solutions under mild conditions. [less ▲]

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See detailA draft for a typology of urban observatories
Farah, Jihad ULg

Conference (2011, September)

Urban observatories represent today a global phenomenon. In the last decades, public actors, universities and civil society actors have established hundreds of urban observatories all around the world ... [more ▼]

Urban observatories represent today a global phenomenon. In the last decades, public actors, universities and civil society actors have established hundreds of urban observatories all around the world. Some of these observatories actively contribute to the analysis of urban dynamics and affect urban policy making. However, urban observatories are still understudied; the scientific literature on urban observatories is rare and culturally fragmented. This article seeks to contribute to the development of a body of knowledge on urban observatories, by proposing a typology of urban observatories that stress the potential impacts and contributions of four different archetypes on urban and territorial planning and management. [less ▲]

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See detailSpatial and temporal propagation of Cryptosporidium and Giardia at various scales in a drinking water reservoir
Burnet, Jean-Baptiste; Ogorzaly, Leslie; Penny, Christian et al

Conference (2011, September)

Cryptosporidium and Giardia are emergent protozoan parasites of faecal origin causing diarrhoeal diseases throughout the world. Their impact on public health is closely linked to the management of water ... [more ▼]

Cryptosporidium and Giardia are emergent protozoan parasites of faecal origin causing diarrhoeal diseases throughout the world. Their impact on public health is closely linked to the management of water resources and both pathogens are continuously released in the environment by punctual and diffuse faecal pollution sources. With the amendment of the Water Safety Plans published by the World Health Organization in 2005, the assessment of the public health risk associated with the presence of both parasites has extended to watershed scale. In Luxembourg, the Upper-Sûre reservoir provides 50% of the population of the country with drinking water. The presence of both Cryptosporidium and Giardia in surface water within the catchment area has been documented earlier. The aim of this study was therefore to understand the propagation of both protozoans within the catchment area over time and space. Integrated into a risk assessment-based approach, the results are intended for establishing an efficient monitoring strategy. Currently, no such strategy is available for water utilities. Though it is a crucial tool for improving the management of drinking water resources because it should alert responsible authorities in case of high contamination risk and prevent from possible waterborne outbreaks. [less ▲]

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See detailDiversity and disparity of the Mesozoic plant fossil record
Cascales - Miñana, Borja ULg; Sender, Luis Miguel; Villanueva-Amadoz, Uxue et al

Conference (2011, September)

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See detailOntogenesis of kisspeptin neurons: from neurogenesis to peri-natal development
Desroziers, Elodie ULg; Droguerre, Marine; Bentsen, A.H et al

Conference (2011, September)

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See detailPalaeocological reconstruction of the dinosaur site of Vallazmorra (Burgos) based on palynological data
Villanueva-Amadoz, Uxue; Diez, José B.; Pérez-Arlucea, Marta et al

Conference (2011, September)

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See detailLe mythe des forêts intactes - Etat des lieux
Bourland, Nils ULg; Federspiel, Michèle; Philippart, Julien ULg et al

Conference (2011, September)

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See detailSIRT1-deficient mice exhibit an altered cartilage phenotype and undergo increased cartilage breakdown and apoptosis
Gabay, Odile; Sanchez, Christelle ULg; Dvir-Ginzberg, Mona et al

Conference (2011, September)

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See detailL'analyse réflexive: un outil pour construire son métier de professeur de sciences au secondaire supérieur
Hindryckx, Marie-Noëlle ULg; Poffé, Corentin ULg; Laschet, Mélanie ULg

Conference (2011, September)

L’analyse réflexive : un outil pour construire son métier de professeur de sciences au secondaire supérieur A l’Université de Liège, la formation en didactique spéciale de la biologie s’adresse à un ... [more ▼]

L’analyse réflexive : un outil pour construire son métier de professeur de sciences au secondaire supérieur A l’Université de Liège, la formation en didactique spéciale de la biologie s’adresse à un public diversifié, tant au niveau de la formation initiale (master ou licence en biologie, sciences biomédicales, médecine vétérinaire, sciences de la santé…) qu’au niveau de l’âge ou des motivations à l’entrée dans le métier. Tous ces étudiants veulent pourtant devenir des enseignants du secondaire supérieur en sciences. Outre les aspects techniques du métier en lien avec la gestion d’une classe, la prise en compte des prescrits légaux, la maîtrise même des contenus, nous tenons à mettre l’accent sur la réflexivité dans la formation initiale des enseignants. La présente communication montrera quelques exemples d’activités menées pour développer cette réflexivité dans différents aspects du métier : • Construire son identité de professeur de sciences (passer de l’autre côté de la barrière) ; • Entrer de façon concrète dans le métier en enseignant à ses pairs (micro-enseignements) ; • Assumer les stages : la réflexion avant, dans et sur l’action ; • Conceptualiser son action professionnelle par l’apport de l’expérience vécue et de la construction dans l’action (séminaires d’analyse des pratiques) ; • Conceptualiser son action professionnelle pour favoriser l’intégration des outils scientifiques à son service (activités de mise à distance) ; • Prendre de la distance et dépasser le caractère local de l’action. Ce dernier aspect sera plus particulièrement illustré par une expérience menée cette année scolaire 2010-2011 de travail en duos entre futurs enseignants du fondamental et du secondaire supérieur autour de la démarche scientifique. [less ▲]

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See detailSeasonal variations of ranging pattern in pigtailed macaques: influence of wild and human resources
Albert, Aurélie ULg; Savini, Tommaso ULg; Huynen, Marie-Claude ULg

Conference (2011, September)

Numerous studies have highlighted the influence of food availability on primate behaviour. Our research aims at understanding the ranging pattern of a troop of northern pigtailed macaques (Macaca leonina ... [more ▼]

Numerous studies have highlighted the influence of food availability on primate behaviour. Our research aims at understanding the ranging pattern of a troop of northern pigtailed macaques (Macaca leonina) living around the visitor center of the Khao Yai National Park, Thailand. The frugivorous pigtailed macaques are supposed to adapt their ranging pattern to the spatio-temporal distribution of fruiting trees. However, the presence of humans, and thus, of human food, may also have an impact on their home range size and location. We followed the troop during 12 months and recorded its diet and progression within the home range (GPS points every 30 minutes). On monthly kernels defining the home range surface, we superimposed a grid of 110x110 m cells. We analysed the spatio-temporal distribution of fruiting trees in botanical transects and converted it into a food abundance index (FAI). Given their semi-terrestriality decreasing travel costs, we predicted that macaques should increase their range during the period of low fruit abundance to gather a sufficient amount of high-quality food (fruits). To the contrary, our results showed that the size of the troop’s home range decreased during fruit scarcity (dry season). The diet analysis showed that during this period, macaques used human food, a high-quality resource, as fallback food which concentration around human settlements made the long travel no more necessary. Alternately, in period of fruit abundance, a correlation between the FAI and the number of GPS points from macaques for each home range cell showed that macaques spent more time in places with a higher abundance of some fruit species, in particular some considered as important in their diet. Finally, in this peculiar situation of macaques living close to human managed areas, both wild and human resources’ spatio-temporal distribution influence the size and location of the troop’s home range [less ▲]

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See detailImaging the statics and dynamics of vortex-antivortex molecules
Silhanek, Alejandro ULg

Conference (2011, September)

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See detailChildren of teenage mothers : delayed psychomotor and language development
Noirhomme-Renard, Florence ULg; Tancredi, Annalisa; Gosset, Christiane ULg

Conference (2011, September)

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See detailRegistro paleobotánico del yacimiento “Horcajuelos-1” del Cretácico Inferior (Hauteriviense superior – Barremiense inferior) de Salas de los Infantes (Burgos, España)
Sender, Luis Miguel; Villanueva-Amadoz, Uxue; Puente-Arauzo, Estefania et al

Conference (2011, September)

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See detailThe Draft Regulations on Matrimonial Property : a Critical Appraisal
Wautelet, Patrick ULg

Conference (2011, September)

This short presentation gives an overview of the twin Draft Regulations proposed by the EU Commission in March 2011 to create a European wide private international law framework for matrimonial assets.

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See detailMiospores from Ordovician-Silurian Argentinean basins: evolution and relationships with other South American basins
Rubinstein, C.; Muro, V.; Steemans, Philippe ULg

Conference (2011, September)

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See detailThe Strange Case of the Jurassic Ichthyosaur
Liston, Jeff; Naish, Darren; Fischer, Valentin ULg

Conference (2011, September)

A report is given on the four decades of unpublished research on a novel ichthyosaur taxon from Iraq. Found in 1952 by field workers for Iraq Oil, it was donated to the Natural History Museum (London ... [more ▼]

A report is given on the four decades of unpublished research on a novel ichthyosaur taxon from Iraq. Found in 1952 by field workers for Iraq Oil, it was donated to the Natural History Museum (London), then borrowed by the late Robert M. Appleby at University College, Cardiff. Appleby aimed to complete a full description of the specimen; his final manuscript also included an extensive discussion of the stratigraphic provenance of the specimen, its phylogenetic affinities, and speculations on its possible ecology. During his investigation, a broad collaboration ensued with members of the universities of Reading and Cambridge and HV Dunnington & Associates (exploration and resource appraisal consultants), as Appleby attempted to constrain the precise age of the specimen within the Jurassic Sargelu Formation. However, the manuscript resulting from this collaboration (submitted to the journal Palaeontology in 1979) was not deemed to have satisfactorily addressed that outstanding question. Although Appleby continued to work widely on ichthyosaurs up until his death in 2004, he was unable to resolve this problem. Subsequent work by the first two authors, incorporating archival research and a revisiting of earlier laboratory techniques, has led to a conclusive resolution of this issue, making it possible for a manuscript describing the specimen to finally be acceptable for publication. Resulting from one of several pieces of Appleby’s unpublished research, the new Iraq taxon has major implications for our understanding of ichthyosaurian diversity, phylogeny and distribution across time and space. [less ▲]

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See detailSoft Capture
Agrell, Per; Gautier, Axel ULg

Conference (2011, September)

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See detailIntroduction to the session "Public action and/or steering"
Schoenaers, Frédéric ULg

Conference (2011, September)

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See detailHigh diversity in late Early Cretaceous ichthyosaurs part II: The Cambridge Greensand material
Fischer, Valentin ULg

Conference (2011, September)

Recent and on-going work on Canadian and French Cretaceous ichthyosaurs has unveiled a high diversity of Albian ophthalmosaurids, suggesting the extinction of ichthyosaurs which occurs during the ... [more ▼]

Recent and on-going work on Canadian and French Cretaceous ichthyosaurs has unveiled a high diversity of Albian ophthalmosaurids, suggesting the extinction of ichthyosaurs which occurs during the Cenomanian was a much more severe event than previously supposed. Yet the ichthyosaur assemblages from other areas such as the USA and Australia are monospecific, suggesting that the diversity of ichthyosaurs was not universally high. The Cambridge Greensand ichthyosaur material, which has not been the subject of any thorough study since 1869, consists of about 900 specimens, the vast majority of which are isolated bones. Nevertheless, this abundant material offers a good opportunity to assess the diversity of the ichthyosaurs that roamed the western England Sea during the late Albian–Early Cenomanian interval. In order to assess this diversity, diagnostic bones such as basioccipitals, stapes, humeri and femora were compared to that of other ophthalmosaurids. Several morphotypes, some represented by 10+ specimens are recognized. Articulated specimens were used to unite cranial and appendicular bone morphotypes to a taxon. An extremely diverse assemblage of at least 5 distinct taxa is recognized in the Cambridge Greensand Formation: Platypterygius sp., two new genera that have representatives in southeastern France and Germany, a Brachypterygius/Aegirosaurus morphotype, and the long-forgotten but diagnostic Cetarthrosaurus walkeri, for which we found a second and better preserved specimen. The diversity of the ‘mid’ Cretaceous ichthyosaurs from Europe now matches that of the Early Jurassic, a period sometimes seen as the ‘Golden Age’ of post-Triassic ichthyosaurs. [less ▲]

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See detailModelling European tree species distribution change over the Holocene
Dury, Marie ULg; François, Louis ULg; Warnant, Pierre et al

Conference (2011, September)

The postglacial re-colonization of Europe by temperate tree species from a few glacial refugia during the Holocene (10,000 BP) is a very interesting case to study the mechanisms of the vegetation dynamics ... [more ▼]

The postglacial re-colonization of Europe by temperate tree species from a few glacial refugia during the Holocene (10,000 BP) is a very interesting case to study the mechanisms of the vegetation dynamics. The relative roles that played the climate conditions, the species dispersal capacities and the inter-specific competition in the re-colonization rates remain controversial. We investigate these different aspects with the CARAIB dynamic vegetation model (CARAIB DVM). Transient runs were performed over the Holocene using the HadCM3 AOGCM-reconstructed climate. European-wide species migration at 0.5° x 0.5° is represented in the model using migration rates derived from a high resolution cellular automaton, CATS-UPSCALE. Individual tree species migration rates were pre-calculated with CATS-UPSCALE every 1000 years over each grid cell used by the DVM in the climatic conditions reconstructed by the AOGCM. The impacts of competition between species on plant dispersal are not taken into account by the automaton. Thus, in CARAIB, a function has been constructed to reduce the potential CATS migration rates in competition conditions. It is based on the species dispersal kernel and on the species net primary productivity. The migration of one species, from its 10,000 BP refugia, is studied within a landscape defined by a set of other species for which no dispersal limitations are assumed. Here, we illustrate the results obtained for two wind-dispersed (Abies alba and Picea abies) and for a no wind-dispersed (Fagus sylvatica) tree species. We compare the HadCM3 climate outputs with reconstructions of some climate variables from fossil dataset. The speeds and the paths of the postglacial spread obtained with the DVM are compared to the past distributions of the three species reconstructed from pollen and macrofossil data. The Holocene climate conditions simulated by the HadCM3 AOGCM do not constrain the European re-colonization of the studied species, except in Scandinavia at the beginning of the period for Picea abies. We observe that, during the past 10,000 years, species occupied regions where climate conditions were different from present observed species climate requirements, notably in the 10k species refugia. This result may imply that at present the species do not occupy their potential distribution area and thus that the postglacial re-colonization is not completed yet. We also show that species dispersal capacities cannot explain the observed species migration over the Holocene and that competition has played an important role. Indeed, when we use the potential migration rates (no competition), species migration rates are too fast. [less ▲]

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See detailMALDI MSI for the screening of ovarian cancer biomarkers: new insight of the technology for new issues in pharmacology.
Longuespée, Rémi ULg; Boyon, Charlotte; Kerdraon, Olivier et al

Conference (2011, September)

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See detailAccompagnement d'enseignants du fondamental par un groupe d'enseignants en recherche autour de questions de didactique des sciences - ASBL Hypothèse
Daro, Sabine; Hindryckx, Marie-Noëlle ULg

Conference (2011, September)

La formation des enseignants du fondamental en sciences doit être prise en charge par des équipes pluridisciplinaire afin de favoriser l'appropriation des sciences et de leur didactique par les ... [more ▼]

La formation des enseignants du fondamental en sciences doit être prise en charge par des équipes pluridisciplinaire afin de favoriser l'appropriation des sciences et de leur didactique par les enseignants eux-mêmes. L'ASBL Hypothèse regroupe des enseignants -chercheurs de tous les réseaux et de tous les niveaux qui mettent au point des outils pour les enseignants, dans leurs classes. [less ▲]

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See detailUse of Fixed and Mobile Acoustic Telemetry Systems to Understand Fish Responses to Habitat Variability in a Large River (Rhône, France)
Capra, Hervé; Pella, Hervé; Ovidio, Michaël ULg et al

Conference (2011, September)

The presentation would summarize the advantages and limitations of both fixed and mobile acoustic telemetry equipment deployed in a fast flowing large river : the Rhône river (France). The objectives were ... [more ▼]

The presentation would summarize the advantages and limitations of both fixed and mobile acoustic telemetry equipment deployed in a fast flowing large river : the Rhône river (France). The objectives were to describe fish behavior in term of fish movements as responses to habitat variability due to the production of peaking electricity and temperature heterogeneity (natural or due to a nuclear power plant release). At a local scale we used a fixed automatic acoustic telemetry system to record continuous movements of n=62 fish during short term (lower than day) habitat variability. The study was conducted in a 2 km long river stretch, from July to September 2009. In a 35 km long study site, we used a mobile acoustic telemetry system to record weekly position of n=108 fish over different seasons and different habitat conditions (low or high flows; low or high temperature...), from March to December 2010. Discharge and abiotic conditions (temperature, depth, velocity or substrate) were known (with an accuracy comparable with fish positioning accuracy) every where at any time (i.e. any discharge) using hydraulic 2D model calibrated and validated for the whole discharge range observed during telemetry studies. Fixed telemetry system (accuracy of few square meters) enabled to define individual habitat use during different short habitat variability configuration (flow increase, flow decrease, temperature increase....). Three main species were represented : two native cyprinids, chub (Leuciscus cephalus) and barbel (Barbus barbus), and an invasive species, wels catfish (Silurus glanis). We analyzed habitat used, habitat preference, fish movement patterns versus habitat variability. Mobile telemetry system (accuracy of few hundred square meters) enabled to evaluate space and time utilisation of fish (mainly the same species than for fixed telemetry study) at a larger scale and during different seasons encompassing the reproduction period, the summer or the winter periods. The different results obtained by both telemetry systems will be presented to illustrate the advantages and limitations of those systems in a large river to address fish displacement in response to discharge and temperature variability. This comparison also emphasized the contribution of a 2D hydrodynamic model to understand fish behaviour. [less ▲]

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See detailDescription of Fish Mobility and Habitat Use in a Large Regulated Fast Flowing River (the Rhône River, France) Using Fine Scale Acoustic Tracking
Bergé, Julien; Capra, Hervé; Pella, Hervé et al

Conference (2011, September)

Understanding fine scale behavioral responses of fish to changes in abiotic characteristics of streams (in term of flow and water temperature) is an interesting innovative issue to improve river ... [more ▼]

Understanding fine scale behavioral responses of fish to changes in abiotic characteristics of streams (in term of flow and water temperature) is an interesting innovative issue to improve river management of highly disturbed large rivers. Acoustic telemetry system have become an essential technology for such studies involving continuous (per second) and accurate tracking of fish movements. In the Rhône River (France), important hydrology and thermal contrasts are mainly explicated by the succession of dams and nuclear power plant from the Leman Lake (Switzerland). In this context, it is likely that fish are compelled to adapt their behaviour and their habitat selection in this changing environment. In order to test this hypothesis, a fixed acoustic telemetry survey was performed in the Rhône River during summer 2009 in front of the Bugey nuclear power plant which released warmed water within the river. A study site of 1.8 km long and 140 m wide was monitored using 32 hydrophones developed by HTI® (Hydroacoustic Technology Inc.). Sixty two fish mainly belonging to three species barbel (Barbus barbus), chub (Leuciscus cephalus) and wels catfish (Silurus glanis) were marked with acoustic tags (307 KHz; pulse rate ~ 3 sec.) and followed continuously during 89 days. Fish positions were coupled with a 2D hydraulic model to obtain main physical characteristics encountered by fish such as flow velocity, water depth, water temperature and substrate. The accuracy of the telemetry system was checked and a positional error less than 4 m was found in the channel (detection efficiency of 50 %) and less than 8 meters along the banks (detection efficiency of 20 %). Behavioral responses of fish were investigated through the individual mobility and activity during selected phases of flow (increase, decrease and stability) and water temperature changes (imposed by both warm water plumes and the rapid transition of deep cold waters from the Leman Lake discharged within the river). Mobility and activity of fish were particularly studied to determine the amount of movement associated with a change of abiotic conditions. The separate effects of each environmental factors on behavioral responses of fish were studied and interactions between factors were analyzed to highlight potential synergistic or antagonistic effects. Finally, movement rules (i.e. individual movement decisions in a particular surrounding environment) were analyzed to determine the role of perception of the environment by fish (i.e. how the fish feel the changes in physical habitat) in the use of space. [less ▲]

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See detailManaging competing water users in a small watershed using decision support tools - a case study of Burkina Faso
Wellens, Joost ULg

Conference (2011, September)

The Kou watershed, situated in the Southwestern part of Burkina Faso, has succumbed since a couple of decades in a typical theater play of anarchistic water management. With his 1.800 km², this small ... [more ▼]

The Kou watershed, situated in the Southwestern part of Burkina Faso, has succumbed since a couple of decades in a typical theater play of anarchistic water management. With his 1.800 km², this small watershed holds the second largest city of Burkina Faso (Bobo-Dioulasso), a former State run irrigated rice scheme and several informal agricultural zones. Nevertheless the abundance on water through sources, an exploitable water table and a perennial water course, most water users find themselves regularly faced to water shortages due to an increase in population, low irrigation efficiencies and lack of mutual respect. Since 1987 the political and administrative authorities have been searching, together with the concerned users, ways to address the threats resulting from this situation through the creation of a Local Water Committee (LWC). Despite the Committee’s will, it was not before 2005 that the LWC started gaining importance through an impetus given by the State within the framework of a decentralised IWRM policy and the invitation of civil society (amongst others the privately run Water Observatory (WO)) to its activities. At the same moment these institutional and organisational changes took place; on demand of the above stated stakeholders (concerned users, public LWC and private WO) decision support tools have been appropriated to guarantee a decent monitoring of the water resources and their exploitation by agriculture. For small irrigated plots throughout the region, efficient irrigation calendars were being proposed using the FAO AquaCrop model. Another FAO tool, SIMIS, has been put in place for the management of an equitable water distribution for the watersheds irrigation scheme. A GIS, based on remote sensing data retrieval and on terrain gauging sites, has been developed for the monitoring of the available water resources and the expansion of the irrigated zones on a watershed level. The WO, aided by the University of Liege, focused on the development and the application of these tools and the appropriation of their derived results by the concerned users. Throughout the different study stages, participatory meetings were organised. Farmers and state agents were heard, and plans and solutions proposed and discussed. These results are periodically presented to the LWC, enabling them to forecast possible hot spots end granting it a judging base. Once decisions are taken, the administration in charge of water and agriculture surveys their application on the field. It is interesting to see how, once competing structures (public vs. private) reinvented their positions and now successfully collaborate, each having their terrain of expertise. The LWC gained in authority now that it finally has got objective data on the intensification of occupied lands and the use of the water resources. Several decisions have been taken and put in place to protect and conserve the water resources; other management scenarios are momentarily being developed and will be presented to the LWC the months to come. The administration in charge of water and agriculture, with its extended network of field agents, continued to play their role on terrain by guiding and popularizing, but as a public representative it’s also the only structure to enforce and maintain the ‘law and order’ of the retained land and water management policies. The private WO concentrated on counselling based on the results of the decision support tools. Being a free market player, it roamed the country to successfully find other parties interested in the developed techniques. After merely five years, improvements on the management of soil and water resources can be recorded thanks to the integration of decision support tools, the WOs counselling and the Ministries field agents. [less ▲]

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See detailDumping social au sein de l'Union européenne
Defossez, Alexandre ULg

Conference (2011, September)

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See detailInterfacial phenomena in carbon fibre reinforced magnesium alloys processed by squeeze casting and thixomolding
Montrieux, Henri-Michel ULg; Mertens, Anne ULg; Halleux, Jacques et al

Conference (2011, September)

Composite materials are known to combine interesting properties of different materials. This research concerns magnesium alloys reinforced by carbon fibre weaves. Such a material can theoretically exhibit ... [more ▼]

Composite materials are known to combine interesting properties of different materials. This research concerns magnesium alloys reinforced by carbon fibre weaves. Such a material can theoretically exhibit a high yield strength/density ratio. This composite is thought to be especially promising for aeronautics. A pre-treatment of carbon weaves ensure two fundamental functions. The first is to provide stiffness and cohesion. It helps keeping fibres aligned and well placed in the mould during casting to ensure optimal properties of the final part in the main load directions. This is imperative when the composite is formed with thixomolding for which semi liquid metal is injected with a very high speed. Nevertheless the problem of geometrical carbon weaves stability is also encountered with squeeze casting. The second objective of the pre-treatment is to provide a porous network in the weaves to enhance infiltration by the capillary action. The two functions can be assumed by coating fibres with Al(H2PO4)3, SiO2 combined with starch, or some other oxide containing mixtures. The general process is to assemble carbon weaves, infiltrate them in an aqueous solution or dispersion of oxides and lastly heat them at high temperature to promote covalent bonds with fibres and vaporize or crack carbonaceous agents to let a porous medium. Further the chemical interaction between the coated fibres and the liquid metal during infiltration can influence the species which are present at the interfaces. As magnesium oxide is stable magnesium can react with oxides. This could lead to better wettability of treated weave. However such chemical reactions seem to be thermally activated and take many seconds to initiate, whereas solidification of magnesium is achieved faster. Furthermore the addition of some carbide former elements (Si, Ti, Zr) to a magnesium based alloy can also influence chemical affinity. In conclusion CMg-MMC research concerns composites with low density, high potential mechanical properties and possibility of processing through thixomolding. Firstly the reach of the theoretical performance of the composite includes the ability of dealing with the interaction between fibres and liquid metal. Secondly primary treatment could help to form bonds between matrix and fibres, make rigid weaves and promote a further infiltration. Thirdly chemical affinity between the fibres, magnesium alloy and coating can influence the infiltration. [less ▲]

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See detailDélocalisation d'un Français en Belgique : aspects civils de la planification successorale
Wautelet, Patrick ULg

Conference (2011, September)

Cette présentation entend donner un aperçu des difficultés soulevées sur le plan de la programmation successorale par une délocalisation d'une personne physique de la France vers la Belgique.

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See detailIon Mobility - Mass Spectrometry as a new approach for the screening of pesticide residues in food
Joly, Laure; Goscinny, Séverine ULg; Touilloux, Romain et al

Conference (2011, September)

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See detailExtension of the Direct strength method to hot-rolled profiles cross-sections
Rossi, Barbara ULg

Conference (2011, September)

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See detailProduction of biodegradable polyesters from industrial and agricultural by-products
de Almeida, C.; Calvaheiro, J.; Raposo, R. et al

Conference (2011, September)

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See detailThe effect of symmetric/asymmetric TAG ratio on the crystallization properties and storage stability of fat blends
De Graef, V.; Vereecken, J.; Danthine, Sabine ULg et al

Conference (2011, September)

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See detailPosidonia meadow: an ecosytem engineer from living plant to dead leaf accumlation
Gobert, Sylvie ULg

Conference (2011, September)

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See detailÉtude de la qualité de vie entre enfants atteints de cancer et enfants tout-venant
Fonseca, Marta; Missotten, Pierre ULg; Etienne, Anne-Marie ULg et al

Conference (2011, September)

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See detailProcessing of carbon fibers reinforced Mg matrix composites via pre-infiltration with Al
Mertens, Anne ULg; Lecomte-Beckers, Jacqueline ULg; Montrieux, Henri-Michel ULg et al

Conference (2011, September)

Mg matrix composites appear as suitable competitors to Al alloys for a wide number of applications, as they allow for a significant weight reduction while exhibiting potentially comparable mechanical ... [more ▼]

Mg matrix composites appear as suitable competitors to Al alloys for a wide number of applications, as they allow for a significant weight reduction while exhibiting potentially comparable mechanical properties. And a large variety of processing routes have already been considered for their production, including 'liquid state' processes such as squeeze casting. These techniques necessitate a very careful control of the wetting behaviour and of the possible interfacial reactions between the reinforcements and the molten metal, along with the solidification process. And this is more particularly true in the case of Mg matrix composites with carbon fibers reinforcements, as Mg alloys are known to exhibit a poor wetting behaviour on carbon substrates. [less ▲]

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See detailMid-infrared predictions of cheese yield from bovine milk
Vanlierde, Amélie ULg; Soyeurt, Hélène ULg; Anceau, Christine ULg et al

Conference (2011, August 31)

Economically, cheese yield (CY) is very important. Todate, empirical or theoretical formulae allow estimating the theoretical CY from milk fat and casein or protein content of milk. It would be ... [more ▼]

Economically, cheese yield (CY) is very important. Todate, empirical or theoretical formulae allow estimating the theoretical CY from milk fat and casein or protein content of milk. It would be interesting to predict CY during milk recording directly without the need to estimate milk components. Through the BlueSel project, 157 milk samples were collected in Wallonia from individual cows and analyzed using a mid-infrared (MIR) MilkoScanFT6000 spectrometer. Individual laboratory cheese yields (ILCY) were determined for each sample and expressed as g of dry coagulum/100 g of milk dry matter. An equation to predict ILCY from MIR was developed using partial least squared regression (Winisi III). A first derivative pre-treatment of spectra was used to correct the baseline drift. To improve the repeatability of the spectral data, a file which contained the spectra of samples analyzed on 5 spectrometers was used during the calibration. During calibration, 23 outliers were detected a nd removed from the calibration set. The ILCY mean of the final calibration set was 63.9% with a SD of 11.2%. The calibration (C) coefficient of determination (R²) was equal to 0.76 with a standard error (SE) of calibration of 5.5%. A full cross-validation (CV) was preformed to assess the robustness. R²cv was 0.72 with a SECV of 6.0%. The similarity between R²c and R²cv as well as between SEC and SECV permits to consider robustness of the developed equation as good. Even if it is planned to improve the equation with additional samples, this first equation will permit to study ILCY in the Walloon dairy cattle. [less ▲]

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See detailThe impact of teacher's dysphonia on children's skills to treat the spoken language
Morsomme, Dominique ULg; MINEL, Laura; Verduyckt, Ingrid

Conference (2011, August 31)

The high prevalence of voice disorders among teachers is known (Roy et al, 2004). Authors (Morton et al, 2001, Rogerson et al, 2005) have shown the impact of a hoarse voice in teachers on student ... [more ▼]

The high prevalence of voice disorders among teachers is known (Roy et al, 2004). Authors (Morton et al, 2001, Rogerson et al, 2005) have shown the impact of a hoarse voice in teachers on student performance. Our aim is to analyze how 68 students (mean age: 8 years 5 months) processes dysphonic speech on a language comprehension task (MCQ on a short story) and on a minimal pair discrimination task (alike/not alike). Our hypothesis is that student performance will change depending on the modality of the tasks: dysphonic versus normophonic voice. Our results: For both the comprehension and the discrimination tasks, the scores of the students were significantly lower in the dysphonic voice modality (F (1,67) = 11.83, p <0.05) regardless of gender, the order of voice presentation and type of school. Moreover, we observe a greater effect of the dysphonic voice modality in the discrimination task (F (1,67) = 9.52, p <0.05). Thus the dysphonic voice disturbs the students the most in the process of discriminating between two isolated words. recognition of isolated words. Finally, when children judge the dysphonic voices, their comments are mostly slighting (98.33%). To conclude, these results support the necessity to prevent voice disorders among teachers and to create specific voice care programmes. [less ▲]

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See detailBiocontrol proteomics:Implication of the pentoses phosphates pathway in the antagonist effect of Pichia anomala against Botrytis cinerea on apple.
Kwasiborski, Anthony ULg; renaut, Jenny; Delaplace, Pierre ULg et al

Conference (2011, August 31)

Pichia anomala strain K was previously identified as an efficient biocontrol agent of the apple pathogen, Botrytis cinerea. Further study demonstrated the complexicity of the mode of action of P. anomala ... [more ▼]

Pichia anomala strain K was previously identified as an efficient biocontrol agent of the apple pathogen, Botrytis cinerea. Further study demonstrated the complexicity of the mode of action of P. anomala against B. cinerea. A molecular study revealed implication of exo-β-1,3-glucanases in the mode of action of P. anomala but suggested implication of other factors. The present study aims to increase our knowledge of the mode of action of P. anomala strain Kh6 against B. cinerea using an in situ approach allowing interactions between organisms, and the proteomic tool allowing to study the ultime expression of the genome. One wound per apple were covered by a membrane and inoculated by P. anomala then by B. cinerea or not. Samples were collected at different incubation times to identify the responses of P. anomala to the presence of B. cinerea. After extraction, proteins were separated on 2-D gels. Spots influenced were identified by MALDI-ToF. In exponential phase, P. anomala Kh6 orientates its energetic metabolism from the glycolysis to the oxidative phosphorylation and sets up the pentose phosphate pathway. Thanks to this new pathway, P. anomala probably obtains energy and nucleic acids allowing to colonize the wound as fast as in absence of B. cinerea. In stationary phase, no differences in the P. anomala energetic metabolism, in absence and in presence of B. cinerea were observed. During that phase, P. anomala seems to use the alcoholic fermentation in order to face the nutrients impoverishment of the substrate. [less ▲]

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See detailEnhancement of Total Electron Content monitoring using triple frequency GNSS data
Spits, Justine; Warnant, René ULg

Conference (2011, August 31)

Detailed reference viewed: 39 (2 ULg)
See detailPMMA/ carbon nanotube nanocomposite foams for EMI shielding application
Thomassin, Jean-Michel ULg; Vuluga, Daniela; Huynen, Isabelle et al

Conference (2011, August 30)

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See detailEstimating myostatin gene effect on milk performance traits using estimated gene content for a large number of non-genotyped cows
Buske, Bernd; Vanrobays, Marie-Laure ULg; Szydlowski, Maciej et al

Conference (2011, August 29)

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See detailA Growth Model of Global Imbalances
Artige, Lionel ULg; Cavenaile, Laurent ULg

Conference (2011, August 29)

Detailed reference viewed: 25 (6 ULg)