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See detailActualités des traitements conservateurs des tendinopathies
Kaux, Jean-François ULg

Conference (2017, May 28)

Les connaissances et la prise en charge des tendinopathies ont beaucoup évolué depuis ces dernières années. En effet, se substituant désormais à l’ancienne appellation « tendinite », les tendinopathies ... [more ▼]

Les connaissances et la prise en charge des tendinopathies ont beaucoup évolué depuis ces dernières années. En effet, se substituant désormais à l’ancienne appellation « tendinite », les tendinopathies sont majoritairement décrites selon le modèle de continuum établi par Cook et Purdam. La compréhension de la physiopathologie de ces lésions a permis l’émergence de nombreux traitements dans le but d’obtenir une récupération optimale et une limitation des récidives. L’objectif de cet article est de faire une revue de l’actualité thérapeutique des tendinopathies. [less ▲]

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See detailEsfera pública discursiva, nº2
Becerra Mayor, David ULg

in Esfera pública discursiva (2017), 2

Número 2 de "Esfera pública discursiva", revista de crítica e información literaria realizada por los estudiantes de "Stylistique et critique de l'espagnol moderne" de la Université de Liège

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See detailIs the arbitrary symmetrical?
Badir, Sémir ULg

in Semiotica (2017)

Arbitrariness is commonly seen as a major concept in Saussure’s thought, and it even receives the status of a “principle” in his theory. It is not only the characteristic feature of the relation between ... [more ▼]

Arbitrariness is commonly seen as a major concept in Saussure’s thought, and it even receives the status of a “principle” in his theory. It is not only the characteristic feature of the relation between the signifier and the signified (the semiological relation is arbitrary), but moreover it is constitutive of this very relation (the relation is semiological because it is arbitrary; there is a so-called “semiological relation” established between a signifier and a signified because of the principle of arbitrariness). And when linguists and other Saussurean interpreters comment on the concept of arbitrariness, they usually imply a binary relation: the semiological relation is arbitrary due to the fact that the signifier is arbitrarily chosen vis-à-vis the signified, and vice versa. I will be questioning the latter assertion in this paper. In my opinion, the symmetry of the semiological relation has not been properly demonstrated. The signifier can be seen as arbitrary with regard to the signified, but no reason has been provided to recognize the converse. Instead a number of arguments can be put forth to see arbitrariness as a concept that implies a non-symmetrical relation. [less ▲]

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See detailCe que devait encore révéler le site de la Schola del Traiano à Ostia Antica
Morard, Thomas ULg

Conference (2017, May 24)

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See detailThe Matrix of Academic Organizing
Dubois-Shaik, Farah; Dubois, Christophe ULg

Scientific conference (2017, May 24)

The aim of this paper is twofold. It firstly aims to account for the Matrix of Excellence, Funding and Omnipresence characterizing academic organizations, and more precisely their constitutive three ... [more ▼]

The aim of this paper is twofold. It firstly aims to account for the Matrix of Excellence, Funding and Omnipresence characterizing academic organizations, and more precisely their constitutive three dimensions: managerial discourse, formal and parallel structures (Friedberg, 2012). Secondly, drawing on the metaphor of shadow organizing (Gherardi et al., 2017), we will illustrate some informal coping mechanisms occurring in the parallel structure of academic organizations. We will then discuss how these coping mechanisms are or are not being translated in managerial discourse and inscribed in formal structures. [less ▲]

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See detailMultifunctional poly(ionic liquid)s: from synthesis to applications in energy and environment
Detrembleur, Christophe ULg; Patil, Nagaraj ULg; Debuigne, Antoine ULg et al

Conference (2017, May 24)

Poly(ionic liquid)s (PILs) are a subclass of polyelectrolytes that gained an enabling role in many fields of polymer chemistry and material science. PILs combine the unique properties of ionic liquids ... [more ▼]

Poly(ionic liquid)s (PILs) are a subclass of polyelectrolytes that gained an enabling role in many fields of polymer chemistry and material science. PILs combine the unique properties of ionic liquids with the flexibility and properties of macromolecules, and provide novel attractive functions. Recently, the precision design of novel PILs by controlled/living polymerization (CLP) techniques was intensively searched for developing emerging applications. This talk will first discuss recent routes for the precision synthesis of all vinyl-imidazolium based (co)polymers in water or in organic media under non-demanding experimental conditions. We will then describe the preparation of innovative redox and surface active PILs, and show the potential of these PILs in battery applications and for multifunctional coatings. More specifically, we will show how macromolecular engineering can be exploited for designing innovative polymer cathodes for ultra-high performance Li storage with unprecedented performances (high capacities and ultra-long life-span over more than 3000 cycles at an extreme current-rate). This innovative and effective molecular design for polymer cathodes opens up new horizons in developing an economical and environmentally benign platform for large-scalable fabrication of high performance batteries. [less ▲]

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See detailÉdition et étude de Gerard du Frattre, compilation épique du XVIe siècle
Lambert, Adélaïde ULg

Poster (2017, May 23)

Présentation du projet de thèse de doctorat.

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See detailQuantification of model uncertainties
Achenbach, Marcus; Gernay, Thomas ULg; Morgenthal, Guido

Scientific conference (2017, May 23)

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See detailÉvaluer les performances des étudiants à l’Université
Detroz, Pascal ULg

Scientific conference (2017, May 23)

Évaluer des étudiants à l’université ou en haute école est une lourde responsabilité. À travers les notes distribuées, ce sont des rêves, des aspirations, un parcours universitaire, une vie ... [more ▼]

Évaluer des étudiants à l’université ou en haute école est une lourde responsabilité. À travers les notes distribuées, ce sont des rêves, des aspirations, un parcours universitaire, une vie professionnelle qui se constituent ou qui, dans certains cas plus négatifs, sont altérés ou détruits. L’édumétrie s’est, depuis plus de 70 ans, intéressée à la qualité des examens et des épreuves scolaires. Avec une conclusion redondante et sans concession : les biais dans la mesure récoltée, autrement dit dans le score attribué aux étudiants, sont nombreux et variés et la part d’erreur y est signifiante. Il y a donc des enjeux sociaux importants - d’équité notamment - à proposer des dispositifs d’évaluation robustes reflétant avec exactitude les capacités réelles des étudiants. Ces dernières années, le travail des évaluateurs s’est considérablement complexifié. L’enseignement universitaire a subi une profonde mutation. Sous l’impulsion d’exigences sociales nouvelles, un nouveau vocable s’est érigé en mantra dans nos institutions. Qu’ils s’agissent de compétences, de performances complexes, de soft skills, d’apprentissages authentiques, tous ces concepts ont pour point commun de viser un apprentissage holistique, contextualisé, intégré, multidisciplinaire. Toutes ces évolutions, souvent très pertinentes, se confrontent toutefois aujourd’hui aux limites de nos connaissances dans le domaine de l’évaluation. Certes les modèles de l’évaluation changent peu à peu. Dans les écrits, la focale porte aujourd’hui sur une évaluation porteuse de sens, émancipatrice, axée sur une rétroaction favorisant les apprentissages, partenariale, prenant en compte la complexité des apprentissages visés par l’enseignement. C’est une évolution saine et utile. Mais dans le contexte de l’enseignement supérieur, dans lequel l’avenir des étudiants dépend de la note finale, on peut s’inquiéter en observant que ces modèles en gestation se structurent sans préoccupation particulière quant à la qualité de la mesure. Autour de ces thématiques, nous proposerons un modèle structurant permettant d’augmenter la qualité des dispositifs d’évaluation, y compris dans ces contextes émergents. [less ▲]

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See detailCorrection de questions à réponses ouvertes: le logiciel SQORE
Crahay, Vinciane ULg; Bonnet, Pierre ULg

Conference (2017, May 23)

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See detailEffects of preference and sensory modality on behavioral reaction in patients with disorders of consciousness
Heine, Lizette ULg; Tillmann, Barbara; Hauet, Marjolaine et al

in Brain Injury (2017)

Background: Reliable evaluation of patients with unresponsive wakefulness syndrome (UWS) or in a minimally conscious state (MCS) remains a major challenge. It has been suggested that the expression of ... [more ▼]

Background: Reliable evaluation of patients with unresponsive wakefulness syndrome (UWS) or in a minimally conscious state (MCS) remains a major challenge. It has been suggested that the expression of residual cerebral function could be improved by allowing patients to listen to their favourite music. However, the potential effect of music on behavioural responsiveness, as well as the effect of preferred stimuli in other sensory modalities (e.g. olfaction), remain poorly understood. Objective: The aim of our study was to investigate the effect of sensory modality (auditory versus olfactory) and preference (preferred versus neutral) of the test stimuli on patients’ subsequent performance on the Coma Recovery Scale-Revised (CRS-R). Research design: Within-subject design because of inter-individual differences between patients. Methods and procedures: We studied four items from the CRS-R (visual pursuit using a mirror, auditory localization of the own name and two movements to command) in 13 patients (7 MCS; 6 UWS). Main outcomes and results: Auditory stimuli triggered higher responsiveness compared to olfactory stimuli, and preferred stimuli were followed by higher scores than did neutral stimuli. Conclusions: Findings suggest that preferred auditory stimuli at the bedside contribute to the expression of residual function and could improve the diagnostic assessment. [less ▲]

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See detailEssential oil of Tunisian plant: biopesticide applied in agricultural system
Ben Kaab, Sofiène ULg; ksouri, riadh; Jijakli, Haissam ULg

Conference (2017, May 23)

The use of plant-derived products in postharvest disease management may be a valid alternative to conventional chemical treatments (Pane et al., 2016). Unfavorable environmental conditions (such as salt ... [more ▼]

The use of plant-derived products in postharvest disease management may be a valid alternative to conventional chemical treatments (Pane et al., 2016). Unfavorable environmental conditions (such as salt and drought) increase production and accumulation of reactive oxygen species (ROS). Consequently, Tunisian plants have developed adaptive responses including the synthesis of specific bioactive molecules used for medical and nutritional purposes (Ksouri et al., 2012). In that context, the main objective of the present study was the identification of essential oils from Tunisian plants against the important plant pathogens, particularly in Europe. The study began with the selection of endemic medicinal plant suspected to present antimicrobial properties. The essential oil was extracted by hydrodistillation using a Clevenger type apparatus (with a yield of 1.2%). The chemical composition of the essential oil obtained by hydro-distillation from the aerial parts was analyzed by GC/MS. Therefore, antifungal activity was evaluated against Fusarium culmorum, Fusarium oxysporum and Penicillium italicum, using ELISA microplates with a blocked randomized design, as described previously (Kouassi et al., 2012). In addition, the essential oil was then tested for their herbicidal activities in pre-emergence and post-emergence assays against three weeds species. The chromatographic analysis showed a complex mixture where twenty compounds were identified accounting for 98.75 % of the total oil. Monoterpenes was represented by 71.73 %. The dominant monoterpenes are α Pinene (7.09%), 1,8-Cineole (54.6%) and Camphor (12.27%). Essential oil reduced significantly spores germination in a dose-dependent manner. Their fungistatic activity reached 100% at 0.6% against Fusarium oxysporum . In the dose response bioassay, the essential oil reduced seed germination rate of Phalaris minor, Sylibum marianum and Trifolium incanatum. Seedling growth was measured by shoot and root lengths at day 7. At 0.5%, essential oil reduced 100% seed germination. Post-emergence bioassays consisted in spraying essential oil at 3 concentrations (0.75, 2 and 3.4 %) at 2 leaves stage of three weeds species. Pelargonic acid was used as commercial positive control at 3.4%. At 0.75% and 2%, the essential oil do not show any sign of injury. However, only at 3.4 %, the spraying of essential oil showed visible injury ranging from wilting (after 1 day) and chlorosis (after 3 day) on Trifolium incanatum and Phalaris minor. After formulation, to enhance the distribution, the coverage and the penetration of the active molecules, the essential oil presented a high herbicidal activity. In conclusion, this work allowed to open new perspectives on the application of Tunisian essential oil as Novel biocontrol strategies against damageable plant pathogens and weeds. [less ▲]

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See detailDEVELOPPEMENT D’UN MODELE DE SYSTEME DE CLIMATISATION AUTOMOBILE MULTI-EVAPORATEURS
Gillet, Thomas ULg; Gendebien, Samuel ULg; Lemort, Vincent ULg et al

Conference (2017, May 22)

La modélisation numérique d’un climatiseur d’automobile multi-évaporateurs, composé de deux évaporateurs et d’un refroidisseur d’eau, a été réalisée à l’aide du logiciel LMS Imagine.Lab Amesim® 1D avec le ... [more ▼]

La modélisation numérique d’un climatiseur d’automobile multi-évaporateurs, composé de deux évaporateurs et d’un refroidisseur d’eau, a été réalisée à l’aide du logiciel LMS Imagine.Lab Amesim® 1D avec le fluide frigorigène R-134a. Un banc d’essai capable de reproduire les conditions extérieures d’un climatiseur automobile a été conçu afin de tester l’architecture de cette machine multi-évaporateurs avec le fluide frigorigène R-1234yf. Les bilans thermiques des premiers résultats expérimentaux sont analysés et présentés. Afin d’illustrer la complexité du contrôle d’une telle architecture en régime dynamique, l’activation d’une vanne électromagnétique dans la boucle batterie du banc d’essais est présentée. Enfin, une perturbation de type échelon a été générée dans le modèle numérique afin de vérifier si les phénomènes transitoires observés expérimentalement sont reproduits. [less ▲]

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