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See detailLire les textes informatifs au début de l'enseignement secondaire : influence d'un dispositif didactique sur les apprentissages des élèves
De Croix, Séverine ULg; Penneman, Jessica

Conference (2015, October 22)

Les spécificités et les difficultés de la « lecture pour apprendre » au début du secondaire sont à l’origine du projet de recherche longitudinale de type quasi-expérimental dans lequel s’inscrit notre ... [more ▼]

Les spécificités et les difficultés de la « lecture pour apprendre » au début du secondaire sont à l’origine du projet de recherche longitudinale de type quasi-expérimental dans lequel s’inscrit notre contribution. « Lirécrire pour apprendre » a pour principaux objectifs d’expérimenter, durant deux années successives (2014-2016), un programme didactique centré sur le développement de la compréhension et de la production des textes à visée informative-explicative ; de tester la valeur de cet outil sur un large échantillon d’élèves du premier degré de l’enseignement secondaire et d’évaluer les conditions d’implémentation et de mise en œuvre de l’outil les plus favorables au changement de pratiques pédagogiques et au maintien de l’innovation. Dans le cadre de cette contribution, à l’issue de la première année de l’expérimentation, nous évoquons quelques éléments de définition et de modélisation préalables (première partie), quelques-uns des constats posés en amont de la conception du programme (deuxième partie) ainsi que le design de la recherche et les caractéristiques du dispositif didactique (troisième partie). Ces éléments constituent le cadre de référence dans lequel s’inscrit l’étude développée dans la quatrième partie du texte, relative aux premiers résultats quantitatifs de l’expérimentation du dispositif. Les données recueillies auprès d’un échantillon de 1690 élèves (scores bruts), limitées aux apprentissages en lecture, sont examinées à la lumière de la question suivante : les élèves peuvent-ils, sous l’influence d’un outil structuré, progresser dans leur capacité à comprendre un texte ou un dossier de documents informatifs-explicatifs et à rendre compte de leur compréhension ? Seule l’évolution des performances des élèves est ici étudiée. Deux autres variables prépondérantes, qui influencent les résultats des élèves, à savoir l’appropriation de l’instrument didactique par les enseignants ainsi que les pratiques effectives d’enseignement, seront analysées ultérieurement, à la lumière de l’ensemble des données de la recherche. [less ▲]

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See detailUltrafast Magnetism at Complex Interfaces
Ostler, Thomas ULg

Conference (2015, October 21)

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See detailBien soigner l'arthrose: un enjeu capital pour notre société!
Henrotin, Yves ULg

Conference (2015, October 20)

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See detailLes évêques de Tongres-Maastricht-Liège sous Charlemagne
Rolland, Jean-Noël ULg

Conference (2015, October 20)

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See detailUne étude bibliographique avec 3CGP (ICPC+Q-Codes)
Jamoulle, Marc ULg

Conference (2015, October 18)

Etude du descripteur MeSH Tunisia au moyen de 3CGP

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See detailLes Q-Codes
Jamoulle, Marc ULg

Conference (2015, October 18)

General Practice/Family Medicine is a complex and poorly understood discipline. The textbooks that treat all differ by their table of contents. There is no specific indexing system . The author presents ... [more ▼]

General Practice/Family Medicine is a complex and poorly understood discipline. The textbooks that treat all differ by their table of contents. There is no specific indexing system . The author presents an authority list of 184 concepts identified during exchanges between family physicians and their colleagues in international General Practice/Family Medicine congress. This list is identified by the letter Q. The Q-codes are complementary to the International Classification of Primary Care (ICPC) which does not use the letter Q. The Q-184 codes are available in 7 languages. The detailed content, terminology, bibliographic citations, PubMed links, links to lay terminologies have been published in the online terminological system of the University of Rouen (Medical Informatics Laboratory - Prof. S.Darmoni) on www.hetop.eu website. Q-code have been produced by a single observer, must be validated. [less ▲]

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See detailHypercalcémie paranéoplasique et hypercalcémie associée à la Néoplasie Multiple de type I (NEM1): traitement par Cinacalcet
VALDES SOCIN, Hernan Gonzalo ULg; POLUS, Marc ULg

Conference (2015, October 17)

Paraneoplastic hypercalcemia and hypercalcemia associated with neoplastic syndromes are particularly resistant to conventional hypocalcemic treatments. We present and discuss two case reports in which ... [more ▼]

Paraneoplastic hypercalcemia and hypercalcemia associated with neoplastic syndromes are particularly resistant to conventional hypocalcemic treatments. We present and discuss two case reports in which Cinacalcet was used to control hypercalcemia. Paraneoplastic hypercalcemia is present in the first case report, in association with a metastasic neuroendocrine pancreas. In the second case report ,cinacalcet is used to control hypecalcemia in a patient with multiple endocrine neoplasia and hyperparathyroidism not controlled by neck surgery. Cinacalcet is an oral agonist of the Calcium Sensing Receptor. The hypocalcemic effects of Cinacalcet have not been documented so far in hypercalcemia-paraneo plastic linked to cancer of the pancreas (Valdés-Socin & al. Rev Med Switzerland 2009). On the other hand, its use seems promising in the MEN1-associated hyperparathyroidism. (Giusti & al. Endocrine 2015). [less ▲]

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See detailLes corrélats neuronaux de la conscience
Martial, Charlotte ULg

Conference (2015, October 16)

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See detailCorporate Board Attributes and CAC: A Comparative Study of France, Germany and UK
Boussaid, Nabila ULg; Sougné, Danielle ULg; Hamza, Taher

Conference (2015, October 16)

This paper investigates the impact of corporate board of directors’ (supervisory) attributes on conditional accounting conservatim in the French, German and British contexts. Using pooled regression model ... [more ▼]

This paper investigates the impact of corporate board of directors’ (supervisory) attributes on conditional accounting conservatim in the French, German and British contexts. Using pooled regression model over the period 2009-2012, our findings report that the relationship between corporate board attributes and accounting conservatism is country dependent. First, regarding the board composition, we find that the effect of board size is positive for German firms, negative for French firms and insignificant for British firms. We also document a positive association between board independence and accounting conservatism for British firms. However, we find no evidence of a positive association between employee seats on the supervisory board and earnings conservatism in German context. Second, female seats on board seem to increase conservative reporting in financial statement only for French firms. Lastly, board meeting frequency in French and British firms appears to increase accounting conservatism. As a robustness test, we use an alternative measure of accounting conservatism namely, time–series of earnings changes measure and confirm the previous results. Overall, our results reveal that corporate board affects the financial reporting quality. [less ▲]

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See detailMediating science, technology, and society at the Belgian Nuclear Research Centre SCK/CEN through hybrid management: The case of PISA
Schröder, Jantine; Van Oudheusden, Michiel ULg; Rossignol, Nicolas ULg et al

Conference (2015, October 16)

Despite growing recognition that the technical and social dimensions of technology development are coproduced, research and policymaking in the nuclear field is still predicated on the separation between ... [more ▼]

Despite growing recognition that the technical and social dimensions of technology development are coproduced, research and policymaking in the nuclear field is still predicated on the separation between both dimensions. This paper explores how this separation is enacted, and occasionally questioned and transformed, within the Belgian context of nuclear technology. It situates the emergence of a science policy support (SPS) unit and programme (PISA) within the Belgian Nuclear Research Centre SCK•CEN as an institutional response to the need of integrating societal and ethical concerns into nuclear research. The paper elicits how since 1999, SPS/PISA draws together science and technology studies (STS) and technology assessment (TA) approaches, creating links between nuclear research innovation and society in mutually beneficial ways. To this end, it first outlines the four areas in which SPS/PISA researchers are active: 1. Ethics of nuclear technology assessment; 2. Radioactive waste management; 3. Safety governance; 4. Perception and communication of ionising radiation risks. As SPS/PISA research is situated in a trading zone that embeds scholarship, nuclear research and research policy, the paper illuminates the growing entanglement of the natural and social sciences, and the roles social scientists play in the development of contemporary technologies and technology policy. Drawing on the notion of hybrid management (Miller 2001), the paper argues that SPS/PISA researchers must develop a language that underlines the interdependency between science, policy, and politics, while acknowledging that actors (policymakers, industry representatives, natural and social scientists, citizens) recurrently draw distinctions between these domains as a means of collectively managing nuclear issues. SPS/PISA research is therefore best understood as boundary work that mediates between various interests, values, and "knowledges." The paper concludes by discussing the key challenges SPS/PISA researchers face while engaging in work of this kind: maintaining professional independence and credibility, ensuring research continuity, and generating both scientific and policy impacts. [less ▲]

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See detailEffet du taux de dopage sur l'activité photocatalytique de ZnO dopé par les métaux alcalins
Benhebal, Hadj; Benrabah, Boulem; Léonard, Angélique ULg et al

Conference (2015, October 16)

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See detailThe development of Structural Fire Engineering over the past 25 years and issues for the future
Franssen, Jean-Marc ULg

Conference (2015, October 15)

This talk presents a series of thoughts of the author from his observation of the evolution of structural fire engineering since the beginning of his career Experimental research works are discussed ... [more ▼]

This talk presents a series of thoughts of the author from his observation of the evolution of structural fire engineering since the beginning of his career Experimental research works are discussed, either on the behavior of materials or on the behavior of structures. The rest of the presentation is dedicated to calculation methods: tabulated data, simple calculation models and general calculation models. For numerical calculation models, the presentation contains a brief history of appearance of different software, of their objectives, of their capabilities… Some examples are presented of structures recently modelled in real applications. Possible abusive utilizations of numerical modelling are also shown. The presentation ends with a presentation of some challenges that the discipline is facing for the future. [less ▲]

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See detailThe impact of factors related to retirement on cognitive functioning
Grotz, Catherine ULg; Adam, Stéphane ULg; Matharan, Fanny et al

Conference (2015, October 15)

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See detailLa médecine de famille, une connaissance complexe et multi facettes
Jamoulle, Marc ULg

Conference (2015, October 15)

Dans les conditions difficiles que doit affronter la Tunisie, soit faire face a l'augmentation de la demande en soins de santé, à l'amélioration de la qualité et à la transition démographique et ... [more ▼]

Dans les conditions difficiles que doit affronter la Tunisie, soit faire face a l'augmentation de la demande en soins de santé, à l'amélioration de la qualité et à la transition démographique et épidémiologique, la Médecine de Famille représente un atout certain. L'image internationale peu flatteuse de la médecine de famille Tunisienne est présentée au travers de sa présence dans les publications scientifiques. Une série de concepts spécifiques de la Médecine de Famille sont exposés ; la complexité, l'extension de la connaissance, l'incertitude, les différents niveaux de l'action. Leur prise en compte permet d'appeler à un autre regard et à un appel à écrire le métier d'une façon différente. Pour en sortir définitivement avec l'image délétère de ce métier exigeant. [less ▲]

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See detailEfficient standard error formulas of ability estimators in item response theory
Magis, David ULg

Conference (2015, October 15)

This talk focuses on the computation of asymptotic standard errors (ASE) of ability estimators with dichotomous item response models. A general framework is considered, and ability estimators are defined ... [more ▼]

This talk focuses on the computation of asymptotic standard errors (ASE) of ability estimators with dichotomous item response models. A general framework is considered, and ability estimators are defined from a very restricted set of assumptions and formulas. This approach encompasses most standard methods such as maximum likelihood, weighted likelihood, maximum a posteriori, and robust estimators. A general formula for the ASE is derived from the theory of M-estimation. Well-known results are found back as particular cases for the maximum and robust estimators, while new ASE proposals for the weighted likelihood and maximum a posteriori estimators are presented. These new formulas are compared to traditional ones by means of a simulation study under Rasch modeling. [less ▲]

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See detailBarthes et Robbe-Grillet : "Je n'aurais pas voulu qu'il fasse du cinéma"
Lorent, Fanny ULg

Conference (2015, October 14)

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See detailPisot property for Arnoux-Rauzy-Poincaré algorithm
Labbé, Sébastien ULg

Conference (2015, October 14)

Detailed reference viewed: 14 (7 ULg)
See detailMémoire et fonctions exécutives: Nouvelles pistes de recherche
Collette, Fabienne ULg

Conference (2015, October 14)

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See detailWiMUAS: New inventory method to perform wildlife counts with UAS and review the large datasets
Linchant, Julie ULg; Lhoest, Simon ULg; Semeki, Jean et al

Conference (2015, October 13)

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See detailEpithelial-to-mesenchymal transition (EMT)-regulated soluble factors mediate tumor angiogenesis and myeloid cell recruitment
Suarez-Carmona, M; Bourcy, M; Lesage, J et al

Conference (2015, October 13)

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See detailTracks as a non-invasive tool for monitoring large carnivores
Authelet, Manon ULg; Vermeulen, Cédric ULg

Conference (2015, October 13)

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See detailAnalysis and comparison of different modeling approaches for the simulation of a micro-scale organic Rankine cycle power plant
Dickes, Rémi ULg; Dumont, Olivier ULg; Legros, Arnaud ULg et al

Conference (2015, October 12)

When simulating a system based on the organic Rankine cycle (ORC), different modeling methods can be used to predict its performance. Each method is characterized by advantages, limitations and a level of ... [more ▼]

When simulating a system based on the organic Rankine cycle (ORC), different modeling methods can be used to predict its performance. Each method is characterized by advantages, limitations and a level of complexity. This contribution aims to assess the impact of the modeling approach on the performance prediction of ORC systems. To this end, a 2.8 kWe ORC unit is investigated as case study. In this paper, the components of the test bench are modeled using different approaches of increasing complexity and each model is calibrated using experimental data from the test rig. The goodness of fit as well as the benefits and limitations of each modeling methods are analyzed and discussed. [less ▲]

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See detailEpithelial-mesenchymal transition induces tissue factor and pro-coagulant properties supporting early metastasis of circulating tumor cells.
Bourcy, M; Suarez-Carmona, M; Francart, M-E et al

Conference (2015, October 12)

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See detailIndex de résistance à la fatigue: que garder?
Paulus, Julien ULg; Bosquet, Laurent; Forthomme, Bénédicte ULg

Conference (2015, October 10)

Objective Isokinetic tests regularly contribute to the assessment of muscle performance. However, to evaluate an athlete who mainly uses the lactic anaerobic metabolism to perform or in specific ... [more ▼]

Objective Isokinetic tests regularly contribute to the assessment of muscle performance. However, to evaluate an athlete who mainly uses the lactic anaerobic metabolism to perform or in specific pathological contexts, fatigue-resistance protocol could be complementary to short maximal strength evaluation. Although the reproducibility of the protocol has been demonstrated by Bosquet et al. (2010), what about the reproductibility of the measured parameters and various "fatigue index" proposed by dynamometers and used in the clinic and in the literature? Material & method Seventeen subjects, moderately active, performed 30 reciprocal maximal concentric contractions on three occasions with one 7-10 days recovery between each session. The peak torque (PT) and the maximal work (MW) of each repetition computed and subsequently use to compile eleven measured parameters and build forty-four index. The reproducibility of each parameter and index was evaluated through their ICC (2,1), SEM and respective MD. Results The ICC values of the measured parameters for the knee extensors are almost always higher than 0.8 while those for flexor range between 0.7 and 0.8. The ICC values for built "fatigue index" are less than 0.7 and 0.5 respectively for the extensors and flexors. No significant difference was observed between the reproducibility of PT and that of MW (whether for the extensors or flexors or for the measured parameters and "fatigue index"). Discussion In view of the values obtained in our population, it appears that no "fatigue index"or calculated quotient (quotient of the last x repetitions by the first x or accumulated repetitions by the best,...) seems sufficiently reproducible for clinical or scientific use! Only the measured parameters such as the best repetition, total or partial sum have a (very) high or excellent reproducibility and can therefore be used in clinical or research domain. References Bosquet, L., Maquet, D., Forthomme, B., Nowak, N., Lehance, C., & Croisier, J. L. (2010). Effect of the lengthening of the protocol on the reliability of muscle fatigue indicators. Int J Sports Med, 31(2), 82-88. [less ▲]

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See detailHepatitis E virus, an animal or a human virus?
Thiry, Damien ULg

Conference (2015, October 10)

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See detailEvaluation isocinétique du genou: quelle est la compatibilité entre différents dynamomètres?
Paulus, Julien ULg; Crielaard, Jean-Michel ULg; Croisier, Jean-Louis ULg et al

Conference (2015, October 10)

Objective The aim of this study was to assess the compatibility between dynamometer Biodex System 3 Pro, Con-Trex MJ PM-2 and Cybex Humac CSMI of knee extensors and flexors. Material & method Twenty-one ... [more ▼]

Objective The aim of this study was to assess the compatibility between dynamometer Biodex System 3 Pro, Con-Trex MJ PM-2 and Cybex Humac CSMI of knee extensors and flexors. Material & method Twenty-one subjects, moderately active, performed three isokinetic evaluation sessions with six to ten days of rest between each. Each of it, performed on a dynamometer in accordance with a different randomized order, included a concentric evaluation (60°.s-1 & 240°.s-1), eccentric (30°.s-1) and fatigue-resistance protocol (30 concentric repetitions maximum 180°.s-1) for the knee extensors and flexors. The peak torque (PT) and the maximal work (MW) of each repetition were recorded, as well as concentric and mixed agonists/antagonists ratios, to measure the compatibility inter-dynamometer two by two through their respective ICC (3.1), SEM and MD. Results For the short maximal strength test, ICC values for the extensors are almost always higher than 0.85 in concentric mode although they don't exceed 0.61 in eccentric mode. The ICC values for the flexor in slow concentric and eccentric mode are above 0.7, 0.75 and 0.8 for pairs Biodex/Cybex, Biodex/Con-Trex and Cybex/Con-Trex. None of ICC value exceeds 0.75 in fast concentric mode for the flexors. The ratios have ICC values lower than 0.6 except concentric ratio at 60°.s-1 for the pair Cybex/Con-Trex (0.83) and mixed ratio for the pairs Biodex/Cybex (0.73) and Cybex/Con-Trex (0.77). The ICC values of the parameters measured during the extensors fatigue-resistance protocol are mostly above 0.8 regardless of the pair of dynamometers considered. The ICC values of these parameters for the flexors are almost all lower than 0.7. Discussion Although the reproducibility of extensors in concentric mode is high, it's important to inform users, whether in clinical or scientific domain, that different dynamometers provide regular incompatible results and we draw attention to the little reproducibility of the agonist/antagonist ratios. Our results justify the establishment of norms for each dynamometers brand in order to interpret, with relevance, the isokinetic test, either for short maximal strength evaluation or fatigue-resistance protocol. [less ▲]

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See detailSpatial variations in concentrations of mercury and persistent organic pollutants in coastal bottlenose dolphins, Tursiops truncatus, from the Lower Florida Keys and the coastal Everglades (South Florida)
Damseaux, France ULg; Kiszka, Jeremy; Heithaus, Michael et al

Conference (2015, October 09)

The bottlenose dolphin (Tursiops truncatus) is a major apex predator and the most common cetacean species found in nearshore waters of South Florida, including the Lower Florida Keys (LFK) and the ... [more ▼]

The bottlenose dolphin (Tursiops truncatus) is a major apex predator and the most common cetacean species found in nearshore waters of South Florida, including the Lower Florida Keys (LFK) and the Everglades National Park (ENP). The objective of this study was 1) to assess contamination levels of total mercury (T-Hg) in skin and persistent organic pollutants (PCBs, PBDEs, DDT, HCH, HCB, DLCs and PCDD/Fs) in blubber samples of bottlenose dolphins from the LFK (T-Hg : nmales = 10; POPs : nmales = 16, nfemales = 8) and the ENP (T-Hg : nmales = 13, nfemales = 9; POPs : nmales = 11, nfemales = 8). T-Hg and POPs were analysed by the mean of Direct Mercury analyser (for T-Hg), GC-ECD (POPs) and GC-MS (DLCs and PCDD/Fs). The PCBs were the main compounds found in bottlenose dolphins from the LFK and ENP. The most present congeners where the CB no. 28, 52, 101, 138, 153 and 180 (Σ 6 PCBs LFK males: 13420.5 ng.g-1 lipids, Σ 6 PCBs LFK females: 9683.4 ng.g-1 lipids, Σ 6 PCBs ENP males: 5637.9 ng.g-1 lipids, Σ 6 PCBs ENP females: 1426.9 ng.g-1 lipids), while the concentrations of DL PCBs remained low for both locations (LFK: 739 ng.g-1 lipids, ENP: 183 ng.g-1 lipids). PCBs concentrations were significantly higher in individuals from the LFK than those from the ENP. PCBs concentrations in LFK and ENP dolphins were significantly lower than those from other locations in the south-eastern US. Unlike organic pollutants, T-Hg concentrations were significantly higher in ENP male dolphins (LFK: 2936.0 ng.g-1 dw, ENP: 10048.3 ng.g-1 dw). These high concentrations were the highest recorded in the south-eastern US and are most likely due to the presence of mangrove ecosystems. This study highlights the complexity of contaminant dynamics (inorganic vs. organic), even at small spatial scales. [less ▲]

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See detailTowards new bioherbicides derived from barley root allelochemicals
Bouhaouel, Imen ULg; Gfeller, Aurélie; Fauconnier, Marie-Laure ULg et al

Conference (2015, October 09)

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See detailStable isotope ratios suggest limited trophic importance of seagrasses for invertebrate consumers from Malagasy tropical polyspecific seagrass meadows
Michel, Loïc ULg; Wang, Haolin; Frederich, Bruno ULg et al

Conference (2015, October 09)

Polyspecific seagrass meadows are of critical ecological importance in tropical coastal zones. These ecosystems provide a wide range of socio-economical services to local populations. Meadows however ... [more ▼]

Polyspecific seagrass meadows are of critical ecological importance in tropical coastal zones. These ecosystems provide a wide range of socio-economical services to local populations. Meadows however undergo multiple threats linked to human activities (increased nutrient input, overfishing, invertebrate overharvesting, etc.). It is currently difficult to assess how seagrass meadows could respond to anthropogenic impacts due to poor knowledge of their functional ecology. Here, stable isotope ratios of carbon, nitrogen and sulfur were used to unravel trophic interactions ruling the food webs associated to seagrass beds of the Toliara Great Reef (SW Madagascar). The contributions of various potential food items (sediment-associated and suspended particulate organic matter, plankton, leaves, roots and epiphytes of 7 seagrasses and thalli of 7 dominant macroalgae) to the diet of 20 invertebrate taxa (one sea urchin, 2 sea stars, 2 sea cucumbers, 5 gastropods including one sea hare, one bivalve, 2 amphipods, one leptostracan, one cumacean 2 hermit crabs and 3 shrimps) were assessed using a Bayesian stable isotope mixing model. Model outputs revealed that important trophic diversity existed among the invertebrate assemblage. In some groups (e.g. hermit crabs and amphipods), resource use by morphologically and taxonomically close taxa was markedly different. Many of the dominant taxa heavily relied on macroalgae for their nutrition. On the other hand, few species apparently consumed seagrass tissues. Moreover, when they did, seagrass generally accounted for a minor portion of the diet only. Overall, our results suggest that seagrass grazing in meadows of the Toliara Great Reef could be lower than in other tropical areas. These discrepancies could be linked with seasonal variation in resource availability or with eutrophication. Higher nutrient load is indeed known to cause ecosystem phase shifts and it may induce diet shift to algivory in some invertebrate consumers. [less ▲]

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See detailProgramme d'étirement appliqué à l'épaule raide : conséquences fonctionnelles
Forthomme, Bénédicte ULg; Croisier, Jean-Louis ULg; COLLIGNON, Pierre ULg et al

Conference (2015, October 09)

Les athlètes de lancer présentent une mobilité passive gléno-humérale de l’épaule dominante spécifique avec une majoration de la rotation externe et une limitation de la rotation interne. La limitation ... [more ▼]

Les athlètes de lancer présentent une mobilité passive gléno-humérale de l’épaule dominante spécifique avec une majoration de la rotation externe et une limitation de la rotation interne. La limitation interne semble liée à une raideur capsulo-musculaire postérieure, favorisant les pathologies de l’épaule sportive. Matériel et méthodes Vingt hommes, sportifs d’armer / lancer (volley-ball, handball) et pratiquant au moins 6 heures d’entraînement depuis plus de 5 années ont participé à cette étude. Ils présentaient tous une raideur des structures postérieures évaluée en clinique. Lors de l’inclusion dans l’étude, 10 athlètes (22,5 ± 4 ans) étaient asymptomatiques, 10 (24,8 ± 4 ans) présentaient une épaule dominante symptomatique (≥ 3/10 sur l’EVA). Les athlètes ont étiré chaque jour leur épaule dominante (sleeper stretch et cross body arm) pendant 4 semaines (5 x 30’'). Avant et après le programme d’étirement des structures postérieures, ils ont subi un test isocinétique de force maximale des rotateurs internes et externes ainsi qu’une analyse tridimensionnelle définissant la cinématique scapulaire. Résultats Après 4 semaines d’étirement des structures postérieures, tous les athlètes ont montré un gain significatif de mobilité en rotation interne passive. Nous n’observons aucune modification de la cinétique scapulaire lors de l’analyse 3D après les étirements chez les athlètes asymptomatiques ; les athlètes symptomatiques présentent une diminution du tilt antérieur scapulaire au repos après les 4 semaines. L’évaluation isocinétique des rotateurs d’épaules après les étirements montrent uniquement une légère réduction (- 4% ; p < 0,05) de la force des rotateurs internes à 60°/s en concentrique chez les athlètes asymptomatiques. Les sportifs qui décrivaient des douleurs avant les étirements sont significativement améliorés après le programme de 4 semaines ; cette diminution de la douleur est corrélée au gain en rotation interne passive. Discussion L’étirement pendant 4 semaines des structures postérieures de l’épaule raide sportive permet une augmentation de la mobilité passive. Ce gain de mobilité est corrélé à la diminution de la douleur chez les athlètes symptomatiques. [less ▲]

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See detailEffect of evolutionary miniaturization on the tempo and mode of diversification - An example from marine angelfishes
Frederich, Bruno ULg; Santini, Francesco; Konow, Nicolai et al

Conference (2015, October 09)

Evolutionary change in body size is a widespread phenomenon in animals. Numerous studies have highlighted evolutionary miniaturization, referring to the evolution of small body size, in various taxa. As ... [more ▼]

Evolutionary change in body size is a widespread phenomenon in animals. Numerous studies have highlighted evolutionary miniaturization, referring to the evolution of small body size, in various taxa. As other traits shift, decrease in size can be viewed as a morphological novelty that enables colonization of new “adaptive zones” and subsequent diversification (i.e. a “key innovation”). Thus, evolution to small body size is hypothesized to influence lineage, morphological and ecological diversification. Until now, few studies have tested this hypothesis and current supports are mixed. Here, we present a quantitative analysis of the radiation of Pomacanthidae (angelfishes), an iconic coral reef fish family where small taxa, the so called “pygmy angelfishes” of the genus Centropyge, appear to have evolved three-times. If an evolutionary decrease in size has acted as a key innovation during the evolutionary history of Pomacanthidae, we predict that diversification rates would be the highest in clades of pygmy angelfishes. We produced a time-calibrated phylogeny including 67 species, collected ecological data and quantified the body shape of 80 species using geometric morphometrics. Then, we tested the prediction by modelling macroevolutionary dynamics of diversification using the Bayesian Analysis of Macroevolutionary Mixture (BAMM) framework. BAMM results do not support a common macroevolutionary regime for every pigmy angelfish clades. Only the clade Centropyge Xiphypops shows higher rates of lineage and morphological diversification than the other clades of angelfishes. We show that miniaturization has few effects on the rate of diversification. The shifts in the tempo of diversification observed in C. Xiphypops might instead be related to a functional innovation of the feeding apparatus. Using the Pomacanthidae, we illustrate that miniaturization may not be a main factor in triggering increased of diversification rates at the family level. [less ▲]

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See detailEtats de conscience altérée: évaluation clinique et techniques d'imagerie
Martial, Charlotte ULg

Conference (2015, October 07)

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See detailVie, institutions, politique : le cas Bergson
Caeymaex, Florence ULg

Conference (2015, October 06)

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See detailCurrent trend in carbon tetrachloride from several NDACC FTIR stations
Hannigan, J.; Palm, M.; Conway, S. et al

Conference (2015, October 05)

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See detailDe l'application des mathématiques en biologie : acquis et perspectives
Brostaux, Yves ULg

Conference (2015, October 03)

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See detailLeucocytes and lipid particles filtration in suction blood during cardiopulmonary bypass: impact on kidney function evaluated with a monocentric prospective randomized study.
LAGNY, Marc-Gilbert ULg; KOCH, Jean-Noël ULg; BLAFFART, Francine ULg et al

Conference (2015, October 03)

OBJECTIVE: Cardiac surgery may be complicated by acute kidney injury (AKI). Cardiotomy suction during cardiopulmonary bypass (CPB) is deleterious. A few studies have demonstrated that shed mediastinal ... [more ▼]

OBJECTIVE: Cardiac surgery may be complicated by acute kidney injury (AKI). Cardiotomy suction during cardiopulmonary bypass (CPB) is deleterious. A few studies have demonstrated that shed mediastinal blood (SMB) suction during cardiopulmonary bypass (CPB) can increase inflammatory response and lipids emboli. These 2 factors contribute to the development of postoperative AKI. The RemoweLL (RemoweLeucoLipids, Eurosets™, Italy) filter is a recent designed cardiotomy with a multilayer filter for activated leucocytes filtration and a syphon for lipid particles sequestration. The SMB can be collected and filtered in this supplementary cardiotomy added to CPB circuit. The aim of this monocentric prospective study was to compare the specific RemoweLL cardiotomy filtration for suction blood during CPB and a conventional 40 µm filter (Admiral, Eurosets™, Italy). The primary goal was to evaluate the AKI within 48 hours after surgery using the Acute Kidney Injury Network classification (AKIN classification) but also measuring early specific biomarkers of AKI: serum Cystatine C and urinary neutrophil gelatinase-associated lipocalin (NGAL). METHODS: Sixty patients scheduled for elective cardiac surgery (aortic or mitral valvular combined or not with coronary bypass grafting) with a glomerular filtration rate (GFR) > 45mL/min. were randomly into 2 groups for SMB filtration: - Groupe 1 (n=30) with RemoweLL cardiotomy (Leucocytes and lipids filter); - Groupe 2 (n=30) with Admiral cardiotomy (conventional 40 µm filter). All components: venous reservoir, oxygenator and surface treatment were similar in both groups. [less ▲]

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See detailBaccio Bandinelli théoricien. Réflexions sur le "Libro del Disegno"
Marique, Charlotte ULg

Conference (2015, October 02)

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See detailNovel chitosan hydrogel for the treatment of osteoarthritis.
Henrotin, Yves ULg

Conference (2015, October 02)

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See detailConclusions
Valenti, Gianluca ULg; Miesse, Hélène ULg

Conference (2015, October 02)

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See detailComment décrire la musique expérimentale ? Le cas de Vital Weekly
Claisse, Frédéric ULg

Conference (2015, October 01)

Publiée de manière interrompue sous forme de courrier hebdomadaire depuis 1995, le magazine Vital Weekly est un observateur privilégié de vingt ans d’évolution dans le domaine des musiques expérimentales ... [more ▼]

Publiée de manière interrompue sous forme de courrier hebdomadaire depuis 1995, le magazine Vital Weekly est un observateur privilégié de vingt ans d’évolution dans le domaine des musiques expérimentales. La communication revient sur ce corpus de 1001 numéros, qui voit les chroniqueurs progressivement inventer une forme de critique musicale radicale, gratuite et libre d’accès, sans prétention stylistique ou journalistique, visant l’informativité avant tout, à destination d’une communauté de lecteurs dont beaucoup sont eux-mêmes producteurs ou musiciens. Le magazine illustre la situation hybride des musiques expérimentales, appellation commode et fourre-tout pour des pratiques musicales extrêmement diversifiées, qui doivent autant aux traditions « savantes » du XXe siècle (field recordings, musique concrète, musiques électro-acoustiques, poésie sonore, …) qu’à l’esprit Do-It-Yourself et à l’esthétique industrielle de la cassette culture ayant émergé au tournant des années 1970-1980. D’inspiration pragmatique, l’analyse sociologique présentée ici prend au sérieux l’épreuve perceptive que représente pour le chroniqueur la rencontre avec un matériau sonore qui défie le jugement esthétique. Exemples à l’appui, il s’agit d’expliciter les « prises » de la critique sous contrainte de descriptivité : quels sont les repères conventionnels sur lesquels s’appuyer pour situer l’objet musical dans un espace structuré (paratexte, épitexte, descripteurs de genre, références intertextuelles) ? quels sont les registres (étrangeté, malaise, onirisme, puissance, intimité, présence à soi, matérialité et textures) qui permettent de transmettre au lecteur l’expérience sensible d’un face-à-face avec un objet sonore bouleversant ? [less ▲]

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See detailLe droit de vote à distance: Emergence d'un objet de recherche et apport au champ de la sociologie électorale
Lafleur, Jean-Michel ULg

Conference (2015, October 01)

Dans cet article, nous présentons tout d’abord l’émergence du droit de vote à distance comme objet de recherche dans le champ la théorie politique et des études migratoires. Ces travaux caractérisés par ... [more ▼]

Dans cet article, nous présentons tout d’abord l’émergence du droit de vote à distance comme objet de recherche dans le champ la théorie politique et des études migratoires. Ces travaux caractérisés par leur dimension exploratoire, nous permettent toutefois de définir le droit de vote à distance et d’identifier les caractéristiques essentielles qui le différencie aujourd’hui des pratiques antérieures. Nous présentons ensuite les travaux sur la diffusion de la norme qui depuis moins d’une décennie ont constitué le principal angle d’entrée de la science politique sur le droit de vote à distance. Dans la troisième et dernière partie de l’article, nous défendons enfin l’intérêt d’une approche transnationale des questions électorales dans les études électorales. Cette approche, comme nous le défendons, permet d’éclairer non seulement le comportement des expatriés mais plus largement la transformation des pratiques électorales ici et là-bas. [less ▲]

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See detailBuilding a bridge between Liege and Asturias : the case of zinc
Peters, Arnaud ULg

Conference (2015, October 01)

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See detailTranscriptionally active HPV infection in the cervical squamo-columnar junction
Herfs, Michael ULg

Conference (2015, October 01)

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See detailDGTs, a complementary tool towards more efficient biomonitoring practices
Richir, Jonathan ULg; Lepoint, Gilles ULg; Donnay, Annick et al

Conference (2015, October 01)

Among the diversity of contaminants, trace elements (TEs) remain of concern because of their persistence, their ability to accumulate in biota and their toxicity. The direct measurement of their dissolved ... [more ▼]

Among the diversity of contaminants, trace elements (TEs) remain of concern because of their persistence, their ability to accumulate in biota and their toxicity. The direct measurement of their dissolved concentrations only gives punctual and fluctuating information, and often remains below detection limits of analytical methods. The more appropriate use of sentinel organisms, or bioindicators, to monitor TEs has thus often been preferred in environmental surveys. The introduction of the diffusive gradients in thin films (DGTs) technique has however participated to progressively change this binary view - bioindicator vs water - of the coastal monitoring of TEs, and DGTs rapidly became a relevant complementary tool to bioindicators, has illustrated below. In the framework of the STARECAPMED project, the ecology and the ecotoxicology of TEs were studied in the seagrass Posidonia oceanica (L.) Delile and the mussel Mytilus galloprovincialis Lamarck, 1819. DGTs (free- and pore-water probes) were deployed before sampling of organisms. TEs were also analyzed in suspended matter (dissolved and suspended-particulate TE speciation). Studies were performed in the Calvi Bay (Corsica, France), northwestern Mediterranean. TE concentrations in organisms and suspended matter or in DGT resins were measured by DRC-ICP-MS after HNO3/H202 mineralization or after a 24h elution in HNO3 1M, respectively. (1) TE bioaccumulation was first seasonally studied in P. oceanica over 3 years. Dissolved TE concentrations monitored with DGTs were low to very low. TE bioaccumulation dynamics in P. oceanica could thus be linked to the natural physiological cycle of the plant, in clean environmental conditions. (2) To complement that field survey, isolated seagrasses were in situ contaminated with TEs at environmental relevant concentrations. Through the use of DGTs, TE uptake kinetics were modelled for seagrasses exposed to know bioavailable concentrations of contaminants, as were loss kinetics during the following depuration phase. The TE sequestration ability of a healthy P. oceanica meadow facing sudden trace metal contamination events could also be quantified. (3) The deployment of pore-water DGT probes in bare-sand or seagrass colonized sediments further showed that, through its stabilizing function of the seabed, P. oceanica maintained higher TE levels in the pore-water. P. oceanica meadows thus offer a significant “depuration-filtering” ecological service along highly anthropized Mediterranean coasts. M. galloprovincialis are widely used in large spatial scale coastal monitoring surveys. (4) The deployment of caged mussels together with DGTs showed that the little contaminated water body of the Calvi Bay was relatively homogenous. It also allowed to calculate TE bioaccumulation towards mussels in reference conditions, and to compare it to native mussel populations. (5) Finally, during a 5 months mussel caging survey, mussels and suspended matter were collected weekly to monthly, such as were deployed DGTs. The physiological status of mussels, the speciation of TEs between their dissolved and suspended-particulate phases, and their relative influence on TE bioaccumulation dynamics in mussels were investigated. In conclusion, these case studies properly demonstrate how DGT probes can be used as a relevant and complementary tool to bioindicators. Their concomitant use should therefore be privileged in monitoring surveys. [less ▲]

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See detailChronos and Topos: The Inheritance of the Here-Now in Gail Jones’s Five Bells
Belleflamme, Valérie-Anne ULg

Conference (2015, October 01)

In an interview, Australian novelist, essayist, and academic Gail Jones claimed an interest in psycho-geography, i.e. “in the idea,” as she puts it, “that we must walk around our own place with an active ... [more ▼]

In an interview, Australian novelist, essayist, and academic Gail Jones claimed an interest in psycho-geography, i.e. “in the idea,” as she puts it, “that we must walk around our own place with an active intelligence and with a degree of radical attention to what is there.” Taking Sydney as an example, Jones insists on the importance of looking at the city’s “shapes, its motions,” of attending to its “sounds, corridors between spaces, the unexpected.” It is, she continues, “about apprehending things through shapes and signs.” Sydney, to her, is a place haunted by its colonial inheritance, and Australia, more generally, is a “colony of trauma”, a place where “there is always a tension between remembering and forgetting.” Thus time and space are merged, or to put it as Jones does, “within the material spaces of a city are these immaterial traces of something else.” Along the same lines, Jones distinguishes between a vertical and a horizontal history: on the one hand, she explains, “there is the history that seems to be unfolding and moving forward,” while on the other hand there is a “plunging down into the interiority of the place, into its lost history.” This merging together of time and space, of history and geography is an inherent attribute of cosmopolitanism as it finds an echo in Jones’s novel Five Bells, which takes place on a single day in cosmopolitan Sydney and draws together four characters with their different national backgrounds, haunting histories and memories, all converging on Circular Quay, an Aboriginal site also marked as the place where Captain Cook first set foot. Focusing on the characters’ migrant perceptions of this historical and iconic site, my paper will seek to investigate how Jones draws on the trope of temporal and spatial inheritance in Five Bells to offer “ethical understanding” as an alternative to today’s embattled conception of Australian national identity. [less ▲]

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See detailPlankton ecosystem response to the decadal variation of winter intensity in the Mediterranean Sea : a long-term study (1979-2014)
Goffart, Anne ULg; Collignon, Amandine ULg; Hecq, Jean-Henri ULg et al

Conference (2015, October)

In the Mediterranean Sea, several studies with distinct data sets indicate that the pelagic ecosystem underwent periods of change in the late 1980s and in the early 2000s. Here we used a unique long-term ... [more ▼]

In the Mediterranean Sea, several studies with distinct data sets indicate that the pelagic ecosystem underwent periods of change in the late 1980s and in the early 2000s. Here we used a unique long-term time series of data collected in the well-preserved Bay of Calvi (Corsica island, Ligurian Sea, NW Mediterranean) from 1979 and 2014 to explore the synchrony between changes in environmental conditions and phyto- and zooplankton dynamics. We identified an almost decadal, long-term variability in winter intensity, with three distinct periods: the 1980s (1979-1988), the 1990s (1989-1998) and the 2000s (1999-2014), which were characterized by moderate, mild and highly variable winters, respectively. We pointed out how the decadal changes in winter intensity affected (i) the duration and intensity of phyto- and zooplankton blooms, (ii) the mean yearly biomasses, and (iii) the nature of the assemblages. High phyto- and zooplankton biomasses were observed in years characterized by moderate and severe winters, and low phyto- and zooplankton abundances were recorded in years with mild winters. Moderate/severe and mild winters were favorable for diatoms and gelatinous zooplankton, respectively. Focusing on meroplanktonic species, we explored ecological consequences of decadal variations observed in the Bay of Calvi for resource management. We highlighted parallelisms with other European seas. [less ▲]

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See detailL’institution de la contre-culture
Saint-Amand, Denis ULg

Conference (2015, October)

Detailed reference viewed: 27 (2 ULg)
See detailLipid analysis on a putative early land plant and its matrix: Preliminary results
Versteegh, Gerath J.M.; Cascales-Miñana, Borja ULg; Gerrienne, Philippe ULg et al

Conference (2015, October)

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See detailSociology of literature and sociocriticism
Saint-Amand, Denis ULg

Conference (2015, October)

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See detailLaparoscopic management of bladder endometriosis
BRICHANT, Géraldine ULg; NICOLAS, Hubert; NISOLLE, Michelle ULg

Conference (2015, October)

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See detailDéchéance de nationalité et terrorisme : quelle marge de manoeuvre pour l'Etat?
Wautelet, Patrick ULg

Conference (2015, October)

Cette présentation a pour objet de situer de manière critique les récentes interventions du législateur belge en matière de déchéance de la nationalité belge, en montrant quelles sont les limites ... [more ▼]

Cette présentation a pour objet de situer de manière critique les récentes interventions du législateur belge en matière de déchéance de la nationalité belge, en montrant quelles sont les limites internationales à l'action du législateur national. Le cadre législatif en vigueur en Belgiqe est analysé en particulier à la lumière de l'interdiction de discrimination [less ▲]

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See detailMars atmospheric escape constrained using MAVEN IUVS coronal observations
Chaffin; Deighan; Chauffray et al

Conference (2015, October)

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See detailFonds 'vautours', contentieux des dettes souveraines et droit de propriété
Wautelet, Patrick ULg

Conference (2015, October)

Cette présentation a pour objectif de contextualiser la loi du 12 juillet 2015 visant à réprimer l'action des fonds dits 'vautours' en offrant une première analyse critique de la loi, principalement au ... [more ▼]

Cette présentation a pour objectif de contextualiser la loi du 12 juillet 2015 visant à réprimer l'action des fonds dits 'vautours' en offrant une première analyse critique de la loi, principalement au regard de la protection internationale du droit de propriété [less ▲]

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See detailThe antibiotic resistance in the environment
Bardiau, Marjorie ULg

Conference (2015, October)

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See detailValorisation de la biomasse pour des applications vers des marchés de niche
Richel, Aurore ULg

Conference (2015, October)

Dans le contexte économique actuel de notre société, il est reconnu que des alternatives et des compléments à la pétrochimie devront être développés dans un futur proche. L’une des solutions possibles ... [more ▼]

Dans le contexte économique actuel de notre société, il est reconnu que des alternatives et des compléments à la pétrochimie devront être développés dans un futur proche. L’une des solutions possibles réside dans le développement de procédés permettant de substituer les actuels produits pétro-sourcés par de nouveaux matériaux bio-basés issus de la biomasse. Sur base de ce constat, Gembloux Agro-Bio Tech et son laboratoire de Chimie Biologique Industrielle se positionnent sur cette thématique en abordant les aspects technico-économiques de transformation du végétal en une gamme de produits à haute valeur ajoutée à destination de divers secteurs applicatifs tels que les matériaux, le cosmétique, le pharmaceutique, etc. L'importance de l'agronomie et des techniques agricoles, combinée à une gestion appropriée des déchets en circuits courts, sont deux piliers discutés dans ce exposé et illustrés au travers de divers exemples stratégiques. [less ▲]

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See detailSoil production and hillslope transport in mid-latitudes during the last glacial-interglacial cycle: A combined data and modelling approach in northern Ardennes
Bovy, Benoît ULg; Braun, Jean; Demoulin, Alain ULg

Conference (2015, October)

The relative efficiency of various hillslope processes through Quaternary glacial-interglacial cycles in the mid-latitudes is not well constrained. Based on a unique set of topographic and soil thickness ... [more ▼]

The relative efficiency of various hillslope processes through Quaternary glacial-interglacial cycles in the mid-latitudes is not well constrained. Based on a unique set of topographic and soil thickness data in the Ardennes (Belgium), we combine the new CLICHE model of climate-dependent hillslope evolution with an inversion algorithm in order to get deeper insight into the ways and timing of hillslope dynamics under one such climatic cycle. We simulate the evolution of a synthetic hill reproducing the terrain attribute distributions of the hillslopes of a ~2500 km2 real area under a simple two-stage 120-kyr-long climatic scenario with linear transitions. The inversion method samples a misfit function in the model parameter space, based on estimates of the fit of topographic derivative distributions in classes of soil thickness and of the relative frequencies of the predicted soil thickness classes. Though the inversion results show convergence patterns for several parameters, no unique solution emerges. We obtain five clusters of good fits, whose centroids are taken as acceptable model solutions. Based on the predicted time series of average denudation rate and soil thickness, plus snapshots of the soil distribution at characteristic times, we compare these solutions with independent data not involved in the misfit function and identify the most realistic one. Providing first-order estimates of several parameters that compare well with published data, it shows that denudation rates increase dramatically at both warm-cold and cold-warm transitions when the mean annual temperature passes through the [0, -5°C] range. It also underlines the overwhelming importance of gelifluction in transporting soil and shaping hillslopes. [less ▲]

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See detailTriclosan retardes development of Sheepshead minnow (Cyprinodon variegatus)
Dussenne, Mélanie ULg; Frederich, Bruno ULg; Das, Krishna ULg et al

Conference (2015, October)

The aquatic environment represents the final sink for many chemicals, including bactericidal agents. Among them Triclosan (TCS), with his chemical structure similar to thyroid hormones (THs), may have ... [more ▼]

The aquatic environment represents the final sink for many chemicals, including bactericidal agents. Among them Triclosan (TCS), with his chemical structure similar to thyroid hormones (THs), may have adverse effects on the thyroid system. The study we carried out aims to evaluate the effects of TCS exposure on development of Cyprinodon variegatus, a fish model used in ecotoxicological studies. We investigated the potential effects of TCS on C. variegatus during two key periods; embryonic development and metamorphosis. We exposed eggs and larvae to environmental relevant concentrations. We showed that TCS had no effect on reproduction parameters, such as egg fertility or survival rate of larvae. However, we highlighted the fact that hatching of exposed larvae was delayed of around 6 to 13 hours compared to control embryos. During the larval phase, measurements of THs levels were performed. We showed that TCS affected the typical ontogenic variations of the whole body thyroid hormones concentrations during metamorphosis. As THs are known to control somatic growth and development, we tested the effects of TCS exposure on morphological development. We observed no deformity or malformation, but we revealed a developmental retardation in larvae exposed to TCS, of around 18 to 32 hours. Such a developmental delay had never been highlighted in previous studies on TCS exposed fish. We hypothesize that the disruption of THs homeostasis affects the timing of the start of metamorphosis. As a consequence, exposed larvae showed an extended larval phase compared to the control group. The harmful effects of TCS on physiology and development are a major concern, as marine organisms are constantly exposed to it. Furthermore, strong connections exist between thyroid and reproductive system, which might have deleterious effects on population dynamics. [less ▲]

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See detailApparatuses as loci of bio-political emergence: development of genetic testing in Belgium
Fallon, Catherine ULg

Conference (2015, October)

In his vision of “biopolitics” Lemke (2011) proposes to conceptualize life and politics as entities intertwined within a dynamic relationship. These technologies change the production of norms and the ... [more ▼]

In his vision of “biopolitics” Lemke (2011) proposes to conceptualize life and politics as entities intertwined within a dynamic relationship. These technologies change the production of norms and the apparatuses (Foucault 2008) organizing the distribution of the living in the domain of utility: therefore biopolitics must be analyzed as center pieces in the transformation of politics. The developments in genomics and epigenetics support the vision of the individual body as an “information network” rather than a physical substrate. The experts (with the active support of the patients) construct models for the calculation of life in the development of policy regulation and contribute actively to frame the policy relevant issues – either at individual or at population level, on the basis of power strategies mobilizing and disseminating specific forms of knowledge which are disciplined and selective. The contribution will present the recent evolution of the apparatuses producing the technical regulation and financial norms for the use of genetic testing in the federal Belgian public health system, considering the two complementary level of the “dispositif” : - At the political level, transformation of the « Conseil supérieur de la Génétique humaine » (1973-2013) into a « Collège de médecins pour le centre de génétique humaine » and the development of new control relations between the subsidizing and control bodies and the hospitals, - At the individual level, transformation of the cooperation between medical doctors, biomedical experts and psycho-sociologists in the relationship with the patients, as they can be observed at the level of the hospital; Who has the resources (intellectual, technological or financial) to control the technology and its use ? what are the social, institutional and technological constrains? who defines and select the legitimate options ? The analysis is not so much normative than critical, giving due attention to the social context and contingent rationalities in the evolution of this peculiar political action, with the aim of opening new areas of discussions transgressing disciplinary and institutional borders which are too often considered as self evident. [less ▲]

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See detailDévelopper l'autorégulation et les compétences en résolution de problèmes : une étude exploratoire en fin d'enseignement primaire
Fagnant, Annick ULg; Jaegers, Doriane ULg

Conference (2015, October)

L’article s’appuie sur une étude exploratoire en fin d'enseignement primaire (grade 6, élèves de 11-12 ans). L’approche d’enseignement/apprentissage mise en place visait conjointement à développer des ... [more ▼]

L’article s’appuie sur une étude exploratoire en fin d'enseignement primaire (grade 6, élèves de 11-12 ans). L’approche d’enseignement/apprentissage mise en place visait conjointement à développer des capacités d’autorégulation et l’apprentissage d’une démarche de résolution de problèmes en favorisant les régulations interactives et, particulièrement, le recours à une grille de co-évaluation. Le dispositif quasi-expérimental de l’étude permet d’apprécier les progrès plus importants des élèves de la classe expérimentale (comparativement à une classe contrôle) en termes de performances mais aussi d’une certaine anticipation et planification de la démarche de résolution. Ils démontrent aussi de meilleures capacités d’autoévaluation. Les entretiens réalisés avec quelques élèves permettent de mettre en évidence la plus-value des différentes formes de régulations interactives mises en place. Enfin, plusieurs éléments permettent également d’émettre l’hypothèse d’un impact positif de l’approche sur les variables affectives et motivationnelles. [less ▲]

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See detailImplication of adamalysin proteases in mesothelioma
Sepult, Christelle ULg; Rocks, Natacha ULg; Bekaert, Sandrine et al

Conference (2015, September 30)

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See detailL'enseignement-apprentissage du néerlandais en Fédération Wallonie-Bruxelles: objectifs, méthodes, résultats
Rasier, Laurent ULg; Hiligsmann, Philippe

Conference (2015, September 30)

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See detailBien soigner l'arthrose: un enjeu capital pour notre société!
Henrotin, Yves ULg

Conference (2015, September 29)

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See detailBetter tests better care : Syndrome-based diagnostics for respiratory tract infections
MELIN, Pierrette ULg

Conference (2015, September 29)

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See detailExperimental and in silico approaches to study the interaction of Remorin with plant plasma membrane : specific interaction of the C-term domain with lipids
Deleu, Magali ULg; Nasir, Mehmet Nail ULg; Gronnier, Julien et al

Conference (2015, September 29)

The function of Remorins, a diverse family of plant-specific proteins (1) is far to be fully elucidated. One of them, StREM1.3 (for Solanum tuberosum Remorin from group 1, homolog 3) has been reported to ... [more ▼]

The function of Remorins, a diverse family of plant-specific proteins (1) is far to be fully elucidated. One of them, StREM1.3 (for Solanum tuberosum Remorin from group 1, homolog 3) has been reported to regulate cell-to-cell propagation of the potato virus X (2). It was also shown to be localized to the inner leaflet of plasma membranes (PMs) and along plasmodesmata, bridges connecting neighbor cells essential for cell-to-cell communication in plants (3). The mechanisms driving StREM1.3 association with PM is still an open question. It was shown recently that a domain of 28 residues at the C-terminus of the potato (RemCA) is required and sufficient for anchoring to the PM (4). Here we combined experimental and in silico biophysics to unravel the molecular bases of RemCA membrane binding. Biomimetic membrane models of plant PM such as monolayers and liposomes were used with various biophysical techniques (Langmuir monolayer technique, Fourier-transformed infrared spectroscopy, circular dichroïsm) and modeling tools (home-made methods and molecular dynamics) (5) to answer to three questions: (i) What is the conformation adopted by RemCA within a membrane?, (ii) Is there any membrane lipid specificity in the RemCA-membrane binding? (iii) What is the role of the two different RemCA domains in the interaction? Results show that RemCA displays a preference for plant phosphoinositide and sitosterol-enriched inner leaflet plasma membrane rafts. Within the membrane, the C-terminal and the N-terminal domains adopt a random coil and a -helical conformation respectively. The C-terminal domain acts as a driver to bind RemCA to the membrane while the N-terminal domain stabilizes the peptide at the membrane. Lysine residues have a crucial importance in this interaction. References (1) Raffaele et al., Plant Physiol., 2007, 145: 593–600 (2) Raffaela et al., Plant Cell, 2009, 21: 1541–1555. (3) Maule, Curr. Opin. Plant Biol., 2008, 11: 680–686. (4) Perraki et al., Plant Physiology, 2012, 160 : 624-637. (5) Deleu et al., Biochim. Biophys. Acta – Biomembranes, 2014, 1838 : 3171-3190. [less ▲]

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See detailPasser à Alma d’Ex Libris : projet de réinformatisation ? projet de bibliothèque ? L'expérience de l'Université de Liège 6 mois avant et 6 mois après
Renaville, François ULg; Thirion, Paul ULg

Conference (2015, September 29)

En janvier 2014, les Bibliothèques de l'Université de Liège ont décidé de passer au système de gestion de bibliothèque Alma. Le projet a débuté en août 2014 ; six mois après, la migration vers Alma et le ... [more ▼]

En janvier 2014, les Bibliothèques de l'Université de Liège ont décidé de passer au système de gestion de bibliothèque Alma. Le projet a débuté en août 2014 ; six mois après, la migration vers Alma et le lancement d'une nouvelle interface de découverte Primo étaient réalisés. Cette présentation balaye les moments clés de ce projet, en mettant l'accent sur la composante organisationnelle et la gestion du changement, ainsi que sur les premiers mois d’expérience avec le nouvel outil. [less ▲]

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