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See detailTrophic ecology of icefishes (Notothenioidei, Perciformes) in a context of climate change
Peignot, Quentin; Frederich, Bruno ULiege; Lepoint, Gilles ULiege et al

Poster (2017, November 23)

The Southern Ocean currently undergoes major environmental modifications related to climate change. When faced with environmental changes, all organisms are expected to have some intrinsic capacity to ... [more ▼]

The Southern Ocean currently undergoes major environmental modifications related to climate change. When faced with environmental changes, all organisms are expected to have some intrinsic capacity to adapt their ecological habits to their new life conditions. Currently, biological traits of many Antarctic species are still unknown and we need such information to assess their capacity to adapt to natural and anthropogenic perturbations. Notothenioidei (Perciformes), or icefishes, are endemic to the Southern Ocean and they are an important trophic component of these marine ecosystems. Here we used stable isotopes ratios of carbon (δ13C) and nitrogen (δ15N) of two well represented genera of icefishes (Trematomus and Lepidonotothen) sampled in 2002/2004 and/or in 2015/2016 to better understand their resources partitioning and the influence of environmental changes on their trophic ecology. Isotopic niches (which are a proxy of the realized ecological niches) were modeled using the SIBER (Stable Isotope Bayesian Ellipses in R) R-package. Our results revealed a great variation in isotopic compositions among icefishes, suggesting that they exploit a wide array of resources. The overlap between the isotopic niches of Trematomus and Lepidonotothen genera in 2002/2004 highlights a possible past competition for resources. Moreover, temporal evolution of niches suggests taxon-specific ecological plasticity in response to variation in environmental parameters and/or in prey availability. An increase in resources partitioning between the two genera was observed over the studied period. In the future, it would be interesting to use mixing models including isotopic composition of potential preys to identify possible changes in their trophic ecology. [less ▲]

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See detailMorphological diversification of the endemic Antarctic fishes Trematominae (Notothenioidei, Teleostei)
Frederich, Bruno ULiege; Heindler, Franz Maximilian; Christiansen, Henrik et al

Poster (2017, November 23)

Adaptive radiation involves the early, rapid ecological and morphological diversification of multiple lineages from a common ancestor into new, diverging adaptive zones. Regarding this definition with ... [more ▼]

Adaptive radiation involves the early, rapid ecological and morphological diversification of multiple lineages from a common ancestor into new, diverging adaptive zones. Regarding this definition with emphasis on the tempo of diversification, Antarctic notothenioids represent one of the very few examples of adaptive radiation in marine fishes. Time-calibrated phylogenies suggest that the diversification of most speciose notothenioid lineages occured between 20 and 15 Ma. The subfamily Trematominae is one of those diverse subclades showing a large range of ecological niches. In the present study, we aim to describe the evolutionary history of Trematomus species. By combining a consensus time-tree and a geometric morphometric dataset, we first illustrate their pattern of cephalic shape diversification in a phylomorphospace and we infer the morphology of their common ancestor. We also explore whether the cephalic shape data shows a phylogenetic signal, which is defined as the statistical dependence among species trait values due to their phylogenetic relatedness. The combination of phylogenetic signal test and exploration of the phylomorphospace allows us to assess whether Trematomus rapidly diverged in various adaptive zones as expected under a classic scenario of adaptive radiation. [less ▲]

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See detailEffects of fluid preservation on sea star stable isotope compositions: How useful can museum collections be for trophic ecology studies?
Le Bourg, Baptiste ULiege; Lepoint, Gilles ULiege; Michel, Loïc

Poster (2017, November 23)

Stable isotope analyses (SIA) of carbon (δ13C) and nitrogen (δ15N) are a common tool to investigate the trophic ecology of animals. After field sampling, animal tissues are usually preserved dried or ... [more ▼]

Stable isotope analyses (SIA) of carbon (δ13C) and nitrogen (δ15N) are a common tool to investigate the trophic ecology of animals. After field sampling, animal tissues are usually preserved dried or frozen before subsequent analysis. However, museum samples, or samples not initially collected for SIA are often fixed in preservative solutions. These preservation methods may alter stable isotope ratios in animal tissues, and those effects should be quantified. Here, we investigated long-term effects (one year) of four preservation methods (freezing, alcohol, formaldehyde, drying) on δ13C and δ15N values of sea stars. We show that only formaldehyde preservation significantly affects δ13C values. However, after being altered, the mean δ13C value remained stable over time, suggesting that a correction factor may be used regardless of preservation time. δ15N values change across time for all methods except freezing but this may be the result of a higher intra-individual variability of δ15N values. The influence of preservation methods on estimation of isotopic niches size (parameterised as standard ellipse area) was also investigated. Bayesian estimations of standard ellipse areas (SEAB) of preserved samples were not different from those of fresh samples except for the samples preserved 6 months in alcohol. These preliminary results suggest that samples stored during one year in preservative fluids may be used for SIA in order to investigate the trophic ecology of sea stars. Future results will also help to determine whether the findings can be generalised to sea stars preserved for a longer time, such as those in museum collections. [less ▲]

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See detailTroubles phonologiques chez des enfants présentant des troubles développementaux du langage
Maillart, Christelle ULiege

Scientific conference (2017, November 23)

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See detailRendre aux juges leur pouvoir politique
Grandjean, Geoffrey ULiege

Scientific conference (2017, November 23)

Dans le cadre de cette leçon inaugurale, le Professeur Geoffrey Grandjean analyse l'exercice du pouvoir politique par les juges dans différents systèmes politiques.

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See detailLe Fonds Weissenbruch, une histoire de l'imprimé rejoint la sphère numérique : nouveaux outils, nouvelles méthodes, nouvelles recherches ?
Simon, Stéphanie ULiege

Conference (2017, November 23)

La numérisation a été intégrée comme une composante à part entière de l'intégration du Fonds Weissenbruch dans les Bibliothèques de l'Université de Liège. La mise en ligne des documents d'archives de ce ... [more ▼]

La numérisation a été intégrée comme une composante à part entière de l'intégration du Fonds Weissenbruch dans les Bibliothèques de l'Université de Liège. La mise en ligne des documents d'archives de ce fonds, via DONum, ouvre de nouvelles perspectives de recherche. La présente communication fait le point sur les objectifs de la numérisation, les outils développés et envisage quelques pistes de nouvelles exploitations. [less ▲]

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See detailLes bibliothèques et l'enseignement. Le cas particulier de l'information literacy
Pochet, Bernard ULiege; Thirion, Paul ULiege

Scientific conference (2017, November 23)

The contributions of libraries in teaching and learning in universities are multiple: it is the information literacy, it is the access to scientific information, recent and of quality, it is working and ... [more ▼]

The contributions of libraries in teaching and learning in universities are multiple: it is the information literacy, it is the access to scientific information, recent and of quality, it is working and learning infrastructures, it is also multiple services and supports for teachers and teaching. This presentation will focus more particularly on the first component with the ULiege Library's Information Literacy Working Group. This working group has been tasked for 5 years with coordinating the offer of training courses (cadastre of courses and trainings, organization of transversal training for doctoral students...) and to put in coherence and formalize the objectives and contents of the training courses through a framework of skills published in September 2017. This framework, "the five pillars of scientific information", will be quickly browsed and described. It is a tool for the creation and evaluation of our courses (30 courses scheduled). It is also intended to present our contents and even to be integrated into existing frameworks of skills. Information literacy having meaning and effectiveness only through partnerships with "contents" teachers. [less ▲]

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See detail« World of Chemistry » : Détournement de la plateforme d’apprentissage Blackboard learn pour gamifier des activités d’entrainement en chimie Générale
le Maire, Nathalie ULiege

Conference (2017, November 23)

Dans le champ éducatif, les jeux ont régulièrement fait l’objet de réflexions et d’expérimentations visant à en exploiter leur potentiel au service de la compréhension, la motivation, la créativité ... [more ▼]

Dans le champ éducatif, les jeux ont régulièrement fait l’objet de réflexions et d’expérimentations visant à en exploiter leur potentiel au service de la compréhension, la motivation, la créativité, l’esprit critique etc. des étudiants. Récemment la notion de gamification, définie comme l’application d’éléments ludiques à des contextes autres que le simple divertissement, a enrichi cette ligne de recherche sur le jeu. La présente communication relate la mise en place et l’évaluation du potentiel de « World of Chemistry », un parcours ludique composé de quatre mini-jeux de chimie disponible dans la plateforme d’apprentissage Blackboard Learn pour des étudiants de Bloc 1 bioingénieur. [less ▲]

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See detailGenome-wide association study and annotating candidate gene networks affecting age at first calving in Nellore cattle
REIS MOTA, Rodrigo ULiege; Guimarães, S.E.F; Fortes, M.R.S. et al

in Journal of Animal Breeding & Genetics (2017), 134(6), 484492

We performed a genome-wide mapping for the age at first calving (AFC) with the goal of annotating candidate genes that regulate fertility in Nellore cattle. Phenotypic data from 762 cows and 777k SNP ... [more ▼]

We performed a genome-wide mapping for the age at first calving (AFC) with the goal of annotating candidate genes that regulate fertility in Nellore cattle. Phenotypic data from 762 cows and 777k SNP genotypes from 2,992 bulls and cows were used. Single nucleotide polymorphism (SNP) effects based on the single- step GBLUP methodology were blocked into adjacent windows of 1 Megabase (Mb) to explain the genetic variance. SNP windows explaining more than 0.40% of the AFC genetic variance were identified on chromosomes 2, 8, 9, 14, 16 and 17. From these windows, we identified 123 coding protein genes that were used to build gene networks. From the association study and derived gene networks, putative candidate genes (e.g., PAPPA, PREP, FER1L6, TPR, NMNAT1, ACAD10, PCMTD1, CRH, OPKR1, NPBWR1 and NCOA2) and transcription factors (TF) (STAT1, STAT3, RELA, E2F1 and EGR1) were strongly associated with female fertility (e.g., negative regulation of luteinizing hormone secretion, folliculogenesis and establishment of uterine receptivity). Evidence suggests that AFC inheritance is complex and controlled by multiple loci across the genome. As several windows explaining higher proportion of the genetic variance were identified on chromosome 14, further studies investigating the interaction across haplotypes to better understand the molecular architecture behind AFC in Nellore cattle should be undertaken. [less ▲]

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See detailEl gran vidrio de Mario Bellatin y Los topos de Félix Bruzzone: estudio comparado de dos obras (particularmente) silenciosas
Licata, Nicolas ULiege

Conference (2017, November 22)

Mario Bellatin, Félix Bruzzone; el acercamiento que proponemos puede parecer atrevido. En cierta medida, realmente lo es. Numerosas diferencias separan a estos dos artistas. Son geográficas ... [more ▼]

Mario Bellatin, Félix Bruzzone; el acercamiento que proponemos puede parecer atrevido. En cierta medida, realmente lo es. Numerosas diferencias separan a estos dos artistas. Son geográficas, generacionales, biográficas, y se reflejan a su turno, formal y semánticamente, en las dos obras que estamos a punto de comparar. Pero a pesar de esta catedral de diferencias nos parece que la pregunta de fondo que plantean El gran vidrio como Los topos es igual: ¿Cómo narrar lo inefable? Es en esta pregunta, y más precisamente en la respuesta común que aportan las dos novelas mencionadas, que se centra este trabajo. En primer lugar, inclinaremos la perspectiva hacia su modo ficcional. El gran vidrio y Los topos entablan una relación curiosa con la autoficción, dado que en una y otra novela la experiencia del escritor se diluye en una ficción saturada, insólita. Otra divergencia con la autoficción más convencional es que ambos textos están plagados de silencios. Después de analizar estas dos peculiaridades, especularemos en torno a los posibles motivos de esta poética a la vez insólita y silenciosa, que se sustentaría —tal es nuestra hipótesis— en la violencia que definió desde su nacimiento la existencia de ambos escritores. [less ▲]

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See detailApproches intégrées en Sciences Pharmaceutiques
Ziemons, Eric ULiege

Conference (2017, November 22)

Dans une approche davantage ciblée sur les compétences, les enseignants de filière des sciences pharmaceutiques ont décidé - plutôt que de reconfigurer complètement le programme de cours - d'implémenter ... [more ▼]

Dans une approche davantage ciblée sur les compétences, les enseignants de filière des sciences pharmaceutiques ont décidé - plutôt que de reconfigurer complètement le programme de cours - d'implémenter des activités permettant aux étudiants d'intégrer les acquis de différentes disciplines, tout en développant des softskills telles que le travail en équipe et l'expression orale. Elles comportent d'une part des activités de laboratoire consistant en des manipulations successives, issues de disciplines différentes, logiquement imbriquées et d'autre part des séminaires en petits groupes mixant travail de groupe et travail individuel, avec une grande part laissée à l'aspect collaboratif. Les différents types de séminaires implémentés sont soit centrés sur le médicament, avec comme productions finales attendues la réalisation d'un poster sur une molécule à usage pharmaceutique et d'un dossier fictif de type "autorisation de mise sur le marché", soit centrés sur le patient avec comme production finale la réalisation d'une vidéo à la pharmacie didactique simulant des entrevues pharmacien-patient. Une collaboration avec l'équipe de Psychologie sociale des groupes et des organisations (PSGO) a permis de renforcer le ciblage des softskills via notamment le coaching des groupes d'étudiants et la réalisation de vidéoscopies. [less ▲]

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See detailHypogonadisme chez l'homme adulte: diagnostic et traitement
VALDES SOCIN, Hernan Gonzalo ULiege

Scientific conference (2017, November 22)

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See detailL'apprentissage de résolution de problèmes complexes (ARPC) : un dispositif d'entrainement au travail interdisciplinaire
Leclercq, Anne-Lise ULiege; Stievenart, Marie ULiege

Scientific conference (2017, November 22)

Ce dispositif part d’un double constat : d’une part, la grande difficulté éprouvée par les étudiants pour transférer leurs connaissances à des situations concrètes, et d’autre part, leur difficulté à ... [more ▼]

Ce dispositif part d’un double constat : d’une part, la grande difficulté éprouvée par les étudiants pour transférer leurs connaissances à des situations concrètes, et d’autre part, leur difficulté à collaborer avec d’autres disciplines pour tenir compte des profils des patients dans leur globalité. Or, la psychologie et la logopédie sont des professions où la collaboration pluridisciplinaire est très fréquente. Cet exposé présente un dispositif d’apprentissage par problèmes nécessitant la collaboration d’étudiants de dernier master en logopédie, neuropsychologie et psychologie de l’enfant. Nous présentons l’auto-évaluation par les étudiants de leur progression, suite à la participation à ce dispositif, dans différents apprentissages critiques du référentiel de compétences. [less ▲]

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See detailLaser Cladding of High Speed Steel Deposits : Thermal history - Microstructure - Wear Behaviour
Mertens, Anne ULiege

Learning material (2017)

This powerpoint presentation was used as teaching material in a seminar given as part of the course “Advanced Manufacturing technologies” at Université catholique de Louvain. It outlines important current ... [more ▼]

This powerpoint presentation was used as teaching material in a seminar given as part of the course “Advanced Manufacturing technologies” at Université catholique de Louvain. It outlines important current issues in the development of additive technologies for the processing of metallic materials through a case study on the laser cladding of high speed steels. A particular attention was given to the role of local variation in thermal history in controlling the microstructure and the wear resistance of thick high speed steels deposits. [less ▲]

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See detailPromoting the Open science culture in university libraries of developing countries: case studies of the French-speaking universities of Belgium cooperation programs in the Global South
Brodkom, Frédéric; Pochet, Bernard ULiege

Scientific conference (2017, November 22)

The ARES-CCD (formerly CUD) is the French-speaking universities and high-school of Belgium Commission for the Cooperation to Development. With an annual budget of 31 M€ fully dedicated to the academic ... [more ▼]

The ARES-CCD (formerly CUD) is the French-speaking universities and high-school of Belgium Commission for the Cooperation to Development. With an annual budget of 31 M€ fully dedicated to the academic development of actually 19 universities of North and Central Africa, South-East Asia, Western South America and Greater Antilles, this commission brings together volunteers of the academic, scientific and administrative staffs of our universities. Since 2000, librarians are strongly involved in this project with the aim to develop partner’s libraries, to improve their infrastructures and operations, to facilitate their access to documentary resources and to strengthen their librarians' skills. Given the important documentary needs of students and researchers in the South and the lack of financial resources, the promotion of Open Science is more than an obvious. We will show that, in addition to our activities of purchasing books or materials, basic training or library renovation, we develop, in close partnership with our colleagues, the Open Science culture in six fields: (1) the installation and support of open-source ILS (mainly KOHA and PMB) including the learning of IT teams, (2) the harvesting and promotion of OA resources via our Web Portal including subscription to official resources of international organization, (3) the development of policies to develop local Institutional Repositories for new and archived (printed) publications and thesis (DSpace support, purchase of scanner, ...), (4) the support to the development of university press to reduce/abolish the excessive cost of printed course materials for students, (5) the training and awareness-raising of library trainers for academic social networks, data exchange platforms, community-based researchers' sites, OA use, etc. (6) the promotion of the obligation to depose in our university repositories the scientific papers financed by the ARES-CCD cooperation and co-signed by Belgian researchers and partners of developing countries (academic and doctorate students). Concrete case studies of our 17 years of experience in the South from Haiti to Vietnam will illustrate these actions. Perspectives on future projects will also be discussed, such as a week, jointly with all our partners, of exchange and work in Belgium in 2018 (as already done in 2016) on the topic of the practical implementation of Open Access in their universities. [less ▲]

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See detailStimuler l’alternance à l’Université de Liège: le laboratoire des sciences du travail
Joiris, Jessica ULiege; Orianne, Jean-François ULiege

Scientific conference (2017, November 22)

Le monde du travail pointe de manière récurrente le caractère trop « théorique » ou « abstrait » de la formation universitaire, par trop éloignée des réalités de terrain. Dans le même ordre d’idées, nos ... [more ▼]

Le monde du travail pointe de manière récurrente le caractère trop « théorique » ou « abstrait » de la formation universitaire, par trop éloignée des réalités de terrain. Dans le même ordre d’idées, nos étudiants expriment, de manière croissante, le souhait d’une formation universitaire davantage orientée vers la pratique et l’insertion professionnelle, où une place plus importante serait accordée aux stages notamment. L’alternance, comme système de formation « dual », semble à même de répondre à certaines attentes des entreprises et apparaît, pour nos étudiants, comme un dispositif innovant de transition vers le marché du travail en favorisant l’adéquation formation-emploi. Il n’en reste pas moins que l’introduction de cette nouvelle modalité d’apprentissage dans l’enseignement supérieur universitaire soulève une série de questions qui sont autant d’enjeux dans le cadre de la mise en place d’un tel dispositif pédagogique. [less ▲]

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See detailUnique alternating peptide-peptoid copolymers from dipeptides via Ugi reaction in water
Al Samad, Assala ULiege; De Winter, Julien; Gergaux, Pascal et al

in Chemical Communications (2017), 53(90), 12240-12243

Herein, we developed a strainghtforward aqueous synthesis of unprecedented alternating peptide-peptoid copolymers via Ugi four-component reaction applied to dipeptides. Functional peptide-peptoid ... [more ▼]

Herein, we developed a strainghtforward aqueous synthesis of unprecedented alternating peptide-peptoid copolymers via Ugi four-component reaction applied to dipeptides. Functional peptide-peptoid copolymers as well as block copolymers were produced in a single step in the presence of acrylic acid and carboxylic acid-terminated poly(ethylene glycol). The thermoresponsiveness of these polymers is highlighted [less ▲]

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