References of "Scientific congresses and symposiums"
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See detailSpinal pain in elite field hockey players: A systematic review
Roussel, N.A.; Rottiers, J.; Lemmens, J. et al

in Vleeming, Andry (Ed.) 9th Interdisciplinary World Congress on Low Back and Pelvic Girdle Pain - Progress in Evidence based diagnosis and treatment (2016, November)

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See detail"Madame Bovary c'est moi"
Cormann, Grégory ULg

Conference (2016, October 29)

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See detailApplication of rep-PCR as molecular typing method for dermatophytes
SACHELI, Rosalie ULg; ADJETEY BAHUN, Akolé ULg; DARFOUF, Rajae ULg et al

Conference (2016, October 29)

Background The distinction of dermatophytes strains by conventional methods is problematic due to a lack of reliable characteristics between isolates. The ability to identify individual organisms allows ... [more ▼]

Background The distinction of dermatophytes strains by conventional methods is problematic due to a lack of reliable characteristics between isolates. The ability to identify individual organisms allows identification of infection sources, such as communal swimming and public washing rooms and apply appropriate control measures. Several outbreaks of dermatophytes infection have already been described in Europe and the feasibility of comparing DNA fingerprints is of interest in this particular field. We have successfully applied the rep-PCR method for typing dermatophytes species such as Microsporum audouinii, Trichophyton violaceum and Trichophyton mentagrophytes complex (T.mentagrophytes complex). Methods The Diversilab® system (bioMérieux, France) has been used to perform rep-PCR. Strains of M. audouinii (116) and T. violaceum (23) were collected during a national survey conducted by the National Reference center (NRC) for mycoses (Liège) in Belgium from February 2013 to March 2014. Strains of T. mentagrophytes complex (32) are part of the national collection of the NRC collected between 2012 and 2015. Results The Diversilab® is able to distinguish different subspecies between the same species complex as it was confirmed with the T. mentagrophytes complex. For this group of strains, two major groups are clearly visible after Diversilab analysis and correspond to white strains (ITS sequenced as T. interdigitale) and yellow strains (ITS sequenced as A. benhamiae) of T. mentagrophytes complex. Both groups share only 70% of similarity. Within a same species of dermatophyte, the Rep-PCR is also able to define several subgroups sometimes linked with epidemiological factors. Inside the T. violaceum strains circulating in Belgium, two different DNA fingerprints have been found. These two subgroups were well separated regarding the geographical location in Belgium (Wallonia and Flanders). Inside the M. audouinii species, 6 different DNA fingerprints have been detected with a main group. The degree of similarity between these six groups is comprised between 85,6% and 94%. Strains belonging to the six groups were defined as M. audouinii by ITS sequencing. Conclusion The DiversiLab® system with the Rep-PCR technology proved to be an efficient method for dermatophytes molecular typing. It is highly sensitive to discriminate small genotypic variation between two strains within the same species which is not possible with other molecular methods such as ITS sequencing. Inside the T. mentagrophytes complex, it permits to easily distinguish the yellow zoophilic strains from the white anthropophilic strain, hardly possible by microscopy. [less ▲]

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See detailLes masques de Sartre: de l'anthropologie à Frantz Fanon et Hubert Lyautey
Cormann, Grégory ULg

Conference (2016, October 28)

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See detailDeriving cultural heritage values: the use of social media
Ginzarly, Manal ULg; Teller, Jacques ULg

in Old and New Media for the Image of the Landscape (2016, October 28)

Nel 2011 l’UNESCO ha adottato la Raccomandazione sul Paesaggio Storico Urbano che mira al riconoscimento e all'identificazione della stratificazione e dell'interconnessione dei valori - naturali e ... [more ▼]

Nel 2011 l’UNESCO ha adottato la Raccomandazione sul Paesaggio Storico Urbano che mira al riconoscimento e all'identificazione della stratificazione e dell'interconnessione dei valori - naturali e culturali, materiali e immateriali, internazionali e locali – riscontrabili in qualsiasi città storica, concepita come un “patrimonio vivente” delle comunità. In tale visione il patrimonio culturale urbano è un elemento riconosciuto non solo dagli esperti, ma dalle intere società che ne valutano gli elementi identitari mirando a conservarli per le generazioni future. La Raccomandazione, in particolare, sostiene che per l'interpretazione e la conservazione del patrimonio culturale si può beneficiare di metodi di valutazione tradizionali e di metodi innovativi basati su dati geo-localizzati e sui dati digitali dei social media, come tweets geo-localizzati, impronte digitali e foto su Flickr. Il presente contributo illustra una metodologia basata sull’analisi delle immagini su Flickr. Dai risultati ottenuti si è evinto che proprio l’indagine dei social media può contribuire ad una comprensione significativa dei valori culturali del contesto urbano, fornendo così la possibilità di una migliore integrazione dei valori socio-culturali riconosciuti dalla collettività nei processi di conservazione e di pianificazione urbana. [less ▲]

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See detailPlant functional trait diversity in wildflower strips: the key to promote pollinators in agricultural landscapes?
Uyttenbroeck, Roel ULg; Piqueray, Julien; Monty, Arnaud ULg

Conference (2016, October 27)

Creating wildflower strips is often suggested as a tool to support pollinator diversity in agricultural landscapes and to promote crop pollination service. The choice of the plant species to sow in flower ... [more ▼]

Creating wildflower strips is often suggested as a tool to support pollinator diversity in agricultural landscapes and to promote crop pollination service. The choice of the plant species to sow in flower strips can influence the effectivity of the strips in supporting pollinators. While it has already been shown that increasing plant species diversity is beneficial for ecosystem services, it is often suggested that plant functional traits and functional trait diversity are the key for this relationship. We created a replicated field experiment with different levels of plant functional diversity in wildflower strips in Belgium to test the effect on the flower-visiting pollinator community. We sampled plant-pollinator interaction networks during 2 years and assessed how the plant functional diversity affected the network structure. Plant functional diversity did not have a clear effect on visiting pollinator species richness, however a different interaction pattern was observed with different functional diversity level. Pollinators in wildflower strips with higher functional diversity had less overlap in their ecological niche, while network stability and robustness for secondary extinctions were not affected. We discuss implications for wildflower strip design. [less ▲]

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See detailCase report: Ovarian fibroma in a mare – Hormonal considerations
Ponthier, Jérôme ULg; Salciccia, Alexandra ULg; Parrilla Hernandez, Sonia ULg et al

in Reproduction in Domestic Animals (2016, October 27), 51(supplement 2), 132

This report shows that, as in humans, AMH as well as steroids productions are low in case of ovarian fibroma, thus preserving normal cyclicity.

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See detailSilurian palynomorphs from the Precordillera basin, western Argentina: biostratigraphy and diversity trends
Garcia Muro, V.J.; Rubinstein, C.V.; Steemans, Philippe ULg

Poster (2016, October 27)

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See detailPalynology and palaeogeography of the middle Přídolí from Saudi Arabia
Steemans, Philippe ULg; Breuer, P.; Al-Hajri, S. et al

Conference (2016, October 27)

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See detailLes 10 ans d’Envol à l’école Saint-Pierre : La musique et le conte au centre des apprentissages et du vivre ensemble dans les classes
Gavray, Claire ULg

Conference (2016, October 27)

historique du projet, évaluation des apports et perspectives

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See detailQuelques réflexions à propos du régime de (dé)fiscalisation des revenus des PME dans le système fiscal belge
Bourgeois, Marc ULg

in Aydogdu, Roman (Ed.) Les petites et moyennes entreprises dans le droit des affaires (2016, October 27)

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See detailOccurrence and significance of minute palynomorphs of marine and non - marine origin in the Middle Ordovician from Saudi Arabia
Le Hérissé, A.; Guidat, C.; Not, F. et al

Conference (2016, October 27)

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See detailEcoNum, a research unit devoted to marine environment monitoring
Richir, Jonathan ULg; Batigny, Antoine; Georges, Nadège et al

Conference (2016, October 27)

The monitoring of coastal environments remains a research domain of great interest and concern. Coastal ecosystems are threatened by natural and human-induced stressors and are, as transitional ... [more ▼]

The monitoring of coastal environments remains a research domain of great interest and concern. Coastal ecosystems are threatened by natural and human-induced stressors and are, as transitional environments, particularly sensitive to disturbances. EcoNum first research thematic revolves around hermatypic corals, calcifying organisms, and their adaptation potentials to environmental changes including by using original and patented chemostats. The studied organisms are grown and maintained in artificial mesocosms that simulate environmental conditions of a natural system. This infrastructure allows to perform long-term experiments, giving time to organisms to adapt to the tested conditions (e.g., increased temperature or lowered pH). Longer-term studies have demonstrated that many organisms are more resistant to environmental stressors than previously observed on the short-term. EcoNum also studies coastal plankton abundance and diversity. Plankton is particularly sensitive to physicochemical changes of water bodies. The classification and the enumeration of planktonic organisms require specialized tools in order to analyse time series of multiple samples. EcoNum has developed a software for the semi-automatic classification of planktonic organisms called Zoo/PhytoImage. This software has been used to study a 10-year time series of coastal Mediterranean zooplankton samples. The concomitant analysis of environmental parameters registered at high frequency with specific statistical tools such as the R package pastecs allows to understand the processes governing the changes observed in plankton assemblages. The use and the development of statistical tools in R (e.g., Zoo/Phytoimage, pastecs) is a priority of EcoNum to favour open access knowledge and reproductive sciences. EcoNum research topics also focus on coastal ecotoxicology. Chemicals, including trace elements, remain contaminants of concern, mainly in coastal environments that are the final sink of inland pollution sources. The chemical integrity of coastal ecosystems thus has to be accurately monitored. The partitioning of chemicals between their dissolved, particulate and sedimentary phases does not provide information on their bioavailability. EcoNum thus monitors coastal waters using bioindicator species such as seagrasses, mussels or sand worms. A global map of the contamination of the Mediterranean by trace elements has been drawn using seagrasses has bioindicator species. EcoNum also studies trace element ecology and toxicology. For instance, it has demonstrated the toxicity of copper on the coral Seriatopora hystrix and it's symbiont's photosynthetic processes, or its bioaccumulation and basipetal translocation towards rhizomes in the seagrass Posidonia oceanica as reserve nutrient for subsequent leaf growth. Finally, coastal vegetated systems are potential carbon thinks (or sources) in the global carbon cycle. Therefore, EcoNum studies the primary productivity of seagrass meadows, from the individual to the community, with measuring techniques as diverse as PAM-fluorometry or biomass production determination. To conclude, EcoNum is a research unit devoted to marine environment monitoring. It develops research thematics on major coastal communities such as coral reefs, seagrass beds or plankton assemblages and studies their natural dynamics and the effects of stressors on their global functioning. [less ▲]

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See detailBounding surface plasticity model for natural clays
Ahayan, Sanae ULg; Yin, Zhen-Yu; Kotronis, Panagiotis et al

Conference (2016, October 26)

Natural soft clay exhibits a considerable degree of anisotropy as a result of its past sedimentation and consolidation history. It also tends to have significant inter-particle bonding, which affects its ... [more ▼]

Natural soft clay exhibits a considerable degree of anisotropy as a result of its past sedimentation and consolidation history. It also tends to have significant inter-particle bonding, which affects its mechanical behavior. The natural structure of in-situ soils makes their behavior different from that of a reconstituted material. In fact, most clays lose a proportion of their strength when remoulded. Various authors proposed anisotropic elastoplastic soil models allowing the yield surface to rotate with the stress history. These models have a “rotational hardening law" which relates the change of the inclination of the yield surface to the current soil state and to the increments of the plastic volumetric and/or shear strain, [Sekiguchi and Otha (1977)], [Hashiguchi and Chen (1998)], [Wheeller et al (2003)]… Other authors combine the plastic anisotropy with destructuration effects observed in soft sensitive soils by assuming that the size and /or the position of the center of the yield surface depends on the amount of the structural soil degradation. These models use an additional isotropic hardening law that relates the size and/or the position of the yield surface of the intact sample to that of the reconstituted one [Nova et al (2003)]. The previous models provide little or no flexibility when it comes to describe the change of the plastic modulus with the loading direction as they are unable to produce a smooth degradation of the stiffness, being single yield surface models. A way to improve this behavior is to introduce the “bounding surface plasticity” theory, initially developed by Dafalias [Dafalias and Herrmann 1986]. Unlike a single yield surface model, the bounding surface theory allows a smooth transition of stresses within and on the bounding surface. The mean feature of this concept is that the actual stress is mapped to the imaginary stress on the bounding surface. The distance between the real and imaginary stress, which is called the “ function distance ”, is used to specify the plastic modulus. This work presents a bounding surface plasticity model for natural and structured clays based on the critical state theory. A novel rotational hardening rule for clays is presented, and a hardening function distance is introduced to describe the evolution of the bounding surface. Validation of the model is provided by drained and undrained tests of Scottish and Finnish intact and reconstituted clays [Kastunnen 2008]. Finally, finite element simulations of a foundation considering the formulated constitutive law are presented. [less ▲]

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See detailDes expériences vécues aux savoirs d'expérience : (in)former la santé et la maladie dans des associations de patients en Belgique francophone
Duysens, Fanny ULg

Conference (2016, October 25)

Le diagnostic médical d'une pathologie est un événement significatif dans les parcours de vie des patients et de leurs proches. Il vient catégoriser des symptômes, participer aux processus de (re ... [more ▼]

Le diagnostic médical d'une pathologie est un événement significatif dans les parcours de vie des patients et de leurs proches. Il vient catégoriser des symptômes, participer aux processus de (re)construction de soi, et induire des attitudes et comportements en vue d'intervenir activement sur les événements. Notamment, il correspond pour certains au moment de leur engagement au sein d'une association concernée par la pathologie ou le syndrome diagnostiqué en question. De telles associations de patients s'impliquent souvent dans diverses activités de production, de mobilisation et de circulation de connaissances sur les conditions et leurs causes. Ces modes d'activisme dits "basés sur la connaissance" (evidence-based activism) se caractérisent par une articulation étroite entre des connaissances issues d'expertise biomédicale et des connaissances expérientielles, issues des expériences vécues au quotidien par les patients et leurs proches, dont ils revendiquent la légitimité. S'inscrivant à la croisée des Science and Technology Studies et de l'anthropologie de la santé et de la maladie, la présente communication vise à explorer les dynamiques de cette articulation à partir d'une ethnographie multi-site menée auprès d'associations belges francophones concernées par des pathologies ou syndromes génétiques. Plus particulièrement, la communication s'intéresse à un projet d'information et de sensibilisation autour du trouble du spectre autistique (TSA) qui est développé par un groupe de parents concernés. Le TSA y est défini comme une condition complexe et multidimensionnelle, aux causes incertaines et controversées mais dont ils revendiquent la part déterminante de la génétique. Comment des "connaissances expérientielles" sont-elles produites, validées et mises en circulation dans le cadre de telles activités ? Au-delà de la simple information, les observations montrent qu'elles comportent des enjeux identitaires importants. [less ▲]

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See detailA benchmark for urban flood modelling
Arrault, Anaïs; Finaud-Guyot, Pascal; Archambeau, Pierre ULg et al

Poster (2016, October 25)

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See detailLa importación literaria a finales del siglo XIX en Colombia: el caso de José Asunción Silva
Mogollon Zapata, Juan Manuel ULg

Conference (2016, October 25)

The analysis of the of Silva’s collection of works places us in quite a disconcerting, yet no less encouraging, position, when re-assessing the different forms of importing literary movements. On one hand ... [more ▼]

The analysis of the of Silva’s collection of works places us in quite a disconcerting, yet no less encouraging, position, when re-assessing the different forms of importing literary movements. On one hand, the image attributed to Silva both by his contemporaries and his successors is that of the leading figure in the assimilation and absorption of the literary European movements that would give rise to modernism. On the other hand, the absence of public visibility for Silva’s works, be it through texts or paratexts, let us in a difficult situation to prove the poet’s will to position himself as the one who introduced the new literary movement to Colombia. If we accept from the outset, as we will in this article, that the Colombian poet possessed an obstinate determination to appropriate and assimilate the European literary movements that give rise to modernism, then we must entertain the possibility that Silva’s literary transfer took place through media other than books, journals or magazines. Our hypothesis is that by focusing on the acts of reading and poise, the literary coterie became the ideal platform for the Colombian writer to adopt and propagate the image of the decadent writer, which would become the embodiment of the aesthetic ideals of modern literature. [less ▲]

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See detailSpecific interests in Autism with versus without speech onset delay : the importance of perceptually versus thematically organized interests
Chiodo, Liliane ULg; Eusèbe, Sandrine; Majerus, Steve ULg et al

Poster (2016, October 25)

To explore whether autistic adults with versus without speech delay also differ in the perceptual vs thematic nature of their specific interests.

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See detailAlgunas consideraciones metodológicas sobre la teoría de las transferencias
Mogollon Zapata, Juan Manuel ULg

Conference (2016, October 24)

Las siguientes consideraciones metodológicas surgen esencialmente de la confrontación de la teoría de las transferencias con mi corpus actual de trabajo, esto es, con las modalidades de importación ... [more ▼]

Las siguientes consideraciones metodológicas surgen esencialmente de la confrontación de la teoría de las transferencias con mi corpus actual de trabajo, esto es, con las modalidades de importación literaria durante el modernismo, época que, como todos sabemos, constituyó un momento de apertura privilegiado para la apropiación y asimilación de las producciones culturales extranjeras. Los escollos metodológicos encontrados a medida que avanzábamos en la problematización de nuestro corpus sirvieron pues de estímulo para integrar y transponer algunos conceptos y herramientas teóricas tomados principalmente de la teoría de los campos de Pierre Bourdieu, del análisis del discurso a la manera de Dominique Maingueneau y de la poética histórica de los soportes tal y como ha sido desarrollada en Francia por Alain Vaillant y Marie-Ève Thérenty. Es a partir de dicho diálogo que podemos hoy afinar ciertos conceptos y herramientas teóricas indispensables para repensar algunos puntos ciegos de la teoría de las transferencias. [less ▲]

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See detailThe recent increase of methane from 10 years of NDACC ground-based FTIR observations
Bader, Whitney ULg

Conference (2016, October 24)

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See detailTopos de Grothendieck et fonctions holomorphes tempérées
Dubussy, Christophe ULg

Conference (2016, October 24)

Dans les années 60, Grothendieck révolutionna la géométrie algébrique en introduisant le concept de topos. Faisant face à des situations où la notion d'ouvert était trop restrictive pour comprendre les ... [more ▼]

Dans les années 60, Grothendieck révolutionna la géométrie algébrique en introduisant le concept de topos. Faisant face à des situations où la notion d'ouvert était trop restrictive pour comprendre les phénomènes géométriques sous-jacents, il définit une nouvelle notion de topologie dans le langage de la théorie des catégories. Très utilisée pour résoudre des problèmes de géométrie et d'analyse contemporains, cette notion a aussi de nombreuses applications surprenantes en logique (théorie intuitionniste, équivalence de Morita, etc ...). Dans ce séminaire je proposerai une application de la théorie des topos de Grothendieck pour étudier les fonctions et les distributions tempérées. En effet, ces objets ne forment un faisceau que sur une topologie de Grothendieck particulière (la topologie sous-analytique), qui n'est pas une topologie au sens usuel du terme. Je montrerai alors, de manière abstraite, comment définir un faisceau de fonctions holomorphes tempérées qui a joué un rôle crucial dans la démonstration de la correspondance de Riemann-Hilbert (généralisation du 21ème problème d'Hilbert). En particulier, ce nouveau faisceau fournira une nouvelle définition, presque purement algébrique, des distributions de Schwartz. [less ▲]

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See detailThermochemical conversion of sugar industry by-products to biofuel
Nicodème, Thibault ULg; Jacquet, Nicolas ULg; Richel, Aurore ULg

Poster (2016, October 24)

Poster concernant la conversion des co-produits de l'industrie sucrière en biocarburants via la voie thermochimique. Description des procédés tels que la gazéification, Fischer-Trospch, la pyrolyse.

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See detailUn cadrage général pour l'éducation aux médias?
Hamers, Jérémy ULg

Conference (2016, October 24)

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See detailLa pubalgie - Rééducation post-chirurgicale
Delvaux, François ULg; DANIEL, Christophe ULg; NAMUROIS, Marie-Hélène ULg et al

Conference (2016, October 22)

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See detailConclusions
Dozo, Björn-Olav ULg; Philippette, Thibault; Servais, Olivier

Conference (2016, October 22)

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See detailModéliser pour comprendre les phénomènes
Karous, Hamad ULg; Nihant, Brigitte ULg; Leyh, Bernard ULg

Conference (2016, October 22)

Il existe actuellement un consensus sur le fait que les scientifiques ne décrivent pas la réalité telle qu’elle est dans toute sa complexité mais qu’ils en construisent des représentations qui leur ... [more ▼]

Il existe actuellement un consensus sur le fait que les scientifiques ne décrivent pas la réalité telle qu’elle est dans toute sa complexité mais qu’ils en construisent des représentations qui leur permettent de l’expliquer partiellement et de la maîtriser, partiellement également. De telles représentations sont généralement appelées des modèles et le processus de leur construction est la modélisation. Les référentiels et programmes de sciences insistent de plus en plus, dans un souci d’authenticité épistémologique, sur la nécessité de confronter les élèves aux modèles établis et à leur élaboration, afin qu’ils se constituent une vision aussi fidèle que possible de l’entreprise scientifique. Le concept de modèle possède des composantes multiples et il n’est pas aisé d’en donner une définition compacte, complète et définitive. On pourrait tenter de dire, en bref, que modéliser, c’est simplifier délibérément pour pouvoir expliquer et agir efficacement. On peut envisager différents types de modèles qui ne s’excluent pas mutuellement. On les rencontrera dans les différentes activités expérimentales que nous proposons. (i) On peut tout d’abord modéliser une situation expérimentale complexe (une pile commerciale ou un accumulateur, par exemple) par une autre situation apparentée mais plus simple et dont on contrôle mieux les paramètres, afin de mettre leur influence en lumière. Diverses expériences sur les piles (de Daniell, entre autres) illustrent cet aspect. Les expériences proposées sur la diffusion entrent également dans cette catégorie. (ii) En chimie, le principe explicatif fondamental consiste à fonder les observations macroscopiques sur des processus décrits au niveau sub-microscopique (atomes, molécules, ions, électrons). Cette représentation sub-microscopique peut être schématique et/ou symbolique. Pour plusieurs des expériences proposées, on demande de représenter schématiquement les mouvements des particules concernées. On demande aussi de traduire le phénomène en un langage symbolique, l’écriture de la réaction chimique. Ici aussi, il s’agit d’une modélisation : quand on écrit HCl(aq), par exemple, on remplace une situation complexe et relativement mal définie – des ions H3O+ et des ions Cl- hydratés avec éventuellement plusieurs couches d’hydratation – par une écriture compacte qui représente de manière conventionnelle l’essentiel de l’information dont on a besoin dans un but déterminé (un titrage, par exemple). [less ▲]

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See detailSurgical treatment of mucometra in an Alpine Goat.
Casalta, Hélène ULg; Knapp, Emilie ULg; Evrard, Laurence ULg et al

Poster (2016, October 21)

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See detailPhysiological Responses to training and competition in 1 to 4 star eventing horses
Kirsch, Katharina ULg; Düe, M.; Holzhausen, H. et al

Poster (2016, October 21)

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See detailLung resident eosinophils represent a distinct cell subset with homeostatic functions
Mesnil, Claire ULg; Raulier, Stéfanie ULg; Paulissen, Geneviève et al

Conference (2016, October 21)

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See detailReported post-operative analgesic administration to non-human primates: 2010 - 2015
Bertrand, Henri ULg; Flecknell, Paul; Brady, James et al

Poster (2016, October 21)

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See detailLa pubalgie du sportif - Actualités thérapeutiques conservatrices
Kaux, Jean-François ULg

Conference (2016, October 21)

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See detailDevelopment of an analytical method for the simultaneous measurement of 10 biogenic amines in food
Douny, Caroline ULg; Benmedjadi, Soumaya; Blaszczyk, Marie et al

Poster (2016, October 21)

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See detailMallarmé et le “motif commun”
Durand, Pascal ULg

Conference (2016, October 21)

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See detailLa quête d’Isis ou la confirmation de Dieu : l’interpretatio Kircheriana
Winand, Jean ULg

Conference (2016, October 21)

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See detailGaseous Micro-Emboli Removal during priming procedure using pulsatile flow with 4 different adult oxygenators with integrated arterial filter and open reservoir.
HELLA, Dominique ULg

Conference (2016, October 21)

4 oxygenators were tested during priming procedures with pulsatile flow. 2 showed better results.A prospective and randomized study begon in June 2016, including 200 patients. We hope with the same ... [more ▼]

4 oxygenators were tested during priming procedures with pulsatile flow. 2 showed better results.A prospective and randomized study begon in June 2016, including 200 patients. We hope with the same comparison to show interesting results. 4 oxygénateurs adultes testés durant la phase de priming utilisant le débit pulsé. 2 se révèlent supérieurs. Une étude prospective randomisée incluant 200 patients a démarré depuis juin 2016 afin de réaliser la même comparaison en clinique; nous espérons en extraire des résultats intéressants. [less ▲]

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See detailThe genesis of a negative agentive nominalizer. The journey of jwtj between Old Egyptian and Coptic
Grossman, Eitan; Polis, Stéphane ULg

Conference (2016, October 21)

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See detailLes environnements flexibles sont-ils un terrain d'émancipation pour le travailleur? Le cas d'une entreprise publique belge.
Fauconneau-Dufresne, Sophie ULg

Conference (2016, October 20)

Les environnements flexibles sont en vogue. Présentés dans la littérature managériale comme un terrain d'émancipation pour les travailleurs, gages d'un accroissement de leur autonomie et de leur liberté ... [more ▼]

Les environnements flexibles sont en vogue. Présentés dans la littérature managériale comme un terrain d'émancipation pour les travailleurs, gages d'un accroissement de leur autonomie et de leur liberté, ils font désormais partie intégrante des projets de modernisation. Constatant un état des lieux plus alarmiste sur cette thématique dans la littérature académique, nous mettons en question le caractère réellement émancipatoire de ce type d'espace. Par une recherche empirique, conduite dans une entreprise publique belge, nous observerons une réalité plus nuancée. Quand ils ne font pas l'objet de réformes profondes de l'organisation du travail dès le tout début du processus de changement, ce type d'agencement est susceptible de se faire au détriment des travailleurs. [less ▲]

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See detailExistera-t-il encore un CPAS dans dix ans ?
Behrendt, Christian ULg

Conference (2016, October 20)

Exposé donné dans le cadre du 8e congrès de la Fédération Wallonne des Assistants Sociaux des CPAS (FéWASC), Campus universitaire de Liège (Sart Tilman), Faculté de Droit, 20 octobre 2016.

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See detailParentalité et précarité : Le lien au cœur des pratiques et des recherches
Halin, Stéphanie; Fohn, Bruno; Glowacz, Fabienne ULg

Conference (2016, October 20)

La parentalité est un concept difficile à définir car il s’inscrit à la fois "dans le champ social, juridique et psychologique" [1]. De nos jours, le « devenir parent » est décrit comme un processus ... [more ▼]

La parentalité est un concept difficile à définir car il s’inscrit à la fois "dans le champ social, juridique et psychologique" [1]. De nos jours, le « devenir parent » est décrit comme un processus dynamique, qui débute dès le désir d’enfant, et qui s’accompagne de remaniements psychiques importants chez les deux parents. Depuis plusieurs années, des études se sont intéressées à l’impact de la précarité sur la sphère familiale. Il est aujourd’hui reconnu que la précarité psychosociale impacte toutes les dimensions du développement de l’enfant et plusieurs dimensions de la parentalité (sensibilité parentale, disponibilité émotionnelle, pratiques éducatives, …). La précarité est définie comme « l’absence d’une ou plusieurs des sécurités, notamment celle de l’emploi, permettant aux personnes et aux familles d’assumer leurs obligations professionnelles, familiales et sociales, et de jouir de leurs droits fondamentaux » [2]. Selon Furtos, à la précarité économique s’ajoute la précarité psychosociale et, parfois, un syndrome d’auto exclusion sociale. Selon lui, « d’un côté, l’environnement est excluant, tandis que de l’autre côté le mot « auto » renvoie à la part du sujet : tout en subissant une situation d’exclusion, le sujet a la capacité d’exercer sur lui-même une activité pour s’exclure de la situation, pour ne pas la souffrir, transformant ainsi le subir en agir » [3]. Ce public est caractérisé par une problématique du lien. Entrer en relation, s’investir dans un suivi, maintenir une continuité du lien sont autant de défis pour les parents en syndrome d’autoexclusion sociale. Parvenir à les rejoindre nécessite donc de développer des structures flexibles et créatives, tant en ce qui concerne le suivi psychosocial que la recherche. Au travers de différentes recherches-action auprès de ces familles, nous avons été confrontés à la nécessité de développer un processus de recherche basée sur le lien pour accéder tant à l’évaluation de pratiques d’intervention et à l’évaluation du vécu de ces parents. Nos travaux ont montré combien le lien occupe une place centrale dans la prise en charge et dans la recherche avec des bénéficiaires en grande précarité psychosociale. Références [1] Doumont, D., & Renard, F. (2004). Parentalité: nouveau concept, nouveaux enjeux? Document publié en ligne, Université Catholique de Louvain, pp. 1-18, https://www.uclouvain.be/cps/ucl/doc/reso/documents/Dos31.pdf [2] Kettani, M., & Zaouche-Gaudron, C. (2012). Sentiment de compétence paternelle et adaptation socioaffective des enfants de deux à six ans en contexte de précarité socioéconomique. Pratiques psychologiques, 18, pp. 75–88. Doi:10.1016/j.prps.2011.02.001 [3] Furtos, J. (2011). La précarité et ses effets sur la santé mentale. Le Carnet PSY, 156 (7), pp.29-34. Doi :10.3917/lcp.156.0029 [less ▲]

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See detailThe Middle Ages: A New Age for the Reception of the Gods of Egypt
Veymiers, Richard ULg

Conference (2016, October 20)

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See detailEnzensberger et l'institution littéraire
Glorie, Caroline ULg

Conference (2016, October 19)

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See detailL’identité narrative au prisme du roman contemporain : d’un nouveau rapport à la fiction dans le récit de soi
Huppe, Justine ULg

Conference (2016, October 19)

Dans le champ intellectuel contemporain, la pensée de Paul Ricœur semble avoir pleinement intégré l’outillage conceptuel requis pour penser les identités et modes de subjectivation. Contre les conceptions ... [more ▼]

Dans le champ intellectuel contemporain, la pensée de Paul Ricœur semble avoir pleinement intégré l’outillage conceptuel requis pour penser les identités et modes de subjectivation. Contre les conceptions du texte comme espace formel autorégulé, Ricœur a décrit le récit comme un dispositif cognitif fondamental, offrant aux individus et aux collectivités des modes de subjectivation et des prises sur le monde. Cette approche constitue un bénéfice disciplinaire non- négligeable pour les sciences humaines. Cette actualité de Ricœur peut sembler paradoxale. Certes, le concept de refiguration permet de penser les effets du récit dans le monde, à une époque où la diffusion massive d’information nécessite de capter l’attention par des récits efficaces (storytelling en politique, publicité, management, infotainment). Par contre, le concept d’identité narrative ne semble pas pouvoir se justifier de la même actualité. En effet, quoi de plus opposé à nos expériences démultipliées que cette forme narrative qui devrait les ordonner dans un récit unique ? Quoi de plus hétérogène que le vécu de l’individu contemporain, sans cesse sommé de s’adapter à de nouveaux rôles et de nouveaux projets ? Dans le cadre de cette communication, notre objectif sera d’évaluer la pertinence du concept d’identité narrative pour penser les modes de subjectivation individuelle, par le prisme de plusieurs romans contemporains (Farah, Delaume, Mérot, Minard, de Toledo, Vasset). Comment le récit de vie littéraire développe-t-il des formes qui puissent répondre aux expériences fragmentaires des sujets ? Ces formes renouvellent-elles l’usage de la narration et/ou de la fiction ? [less ▲]

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See detailFaire famille aujourd'hui : expériences de personnes gays, lesbiennes et trans
Scali, Thérèse ULg

Conference (2016, October 19)

Les multiples systèmes, formes, catégories et pratiques de la parenté ont retenu l’attention des anthropologues comme une dimension centrale des façons dont les individus et les groupes humains conçoivent ... [more ▼]

Les multiples systèmes, formes, catégories et pratiques de la parenté ont retenu l’attention des anthropologues comme une dimension centrale des façons dont les individus et les groupes humains conçoivent et vivent leurs rapports à eux-mêmes, aux autres, aux sociétés et au monde qui les entoure. Dans différents contextes et périodes historiques, des évolutions – tant démographiques, politiques, socio-culturelles, économiques, juridiques, scientifiques, médicales, ou encore relatives aux âges ou aux genres – ont contribué à sa (re)définition constante. Force est de constater que les innovations récentes concernant, entre autres, les technologies de procréation médicalement assistée et de gestation pour autrui, ou les débats autour du « mariage pour tous » et de l’adoption par des couples du même sexe, ont parfois été interprétés en termes de profondes ruptures par rapport à des conceptions plus « traditionnelles » de la parenté, ce qui leur confère un certain caractère inédit et polémique. D’un point de vue anthropologique, ces reconfigurations de la parenté témoignent de différentes modalités d’articulation entre le social, le culturel et le biologique, faits de société et faits de nature, construit et inné, dans la définition de la parenté. Cela amène à repenser la parenté dans toutes ses dimensions, du public à l’intime. Partant de l’anthropologie, et afin d’élargir le champ des réflexions empiriques, théoriques et épistémologiques, ce colloque invite à croiser les perspectives sur les (re)configurations contemporaines de la parenté dans les sciences humaines et sociales en privilégiant les approches ethnographiques. Il comprend deux axes principaux mais non exclusifs. Le premier axe entend appréhender les manières dont la question des (re)configurations contemporaines de la parenté est posée dans différents espaces publics et intimes. Le second axe ouvre quant à lui un débat épistémologique sur les regards croisés et comparatifs entre divers contextes, thématiques ou disciplines en invitant à analyser les enjeux, apports et limites issus de tels travaux de recherche. [less ▲]

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See detailCritique de la compilation. Hans Magnus Enzensberger et les nouveaux médias.
Hamers, Jérémy ULg

Conference (2016, October 19)

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See detailImpact of skimming and microfiltration processes on equol concentration in milk
Daems, Frédéric ULg; Ninane, Véronique; Romnee, Jean-Michel et al

Poster (2016, October 19)

Equol is a microbial metabolite of isoflavones that could be used as therapeutic agent against several diseases and cancers. Cow's milk could be a potential source of equol in the human diet, but more ... [more ▼]

Equol is a microbial metabolite of isoflavones that could be used as therapeutic agent against several diseases and cancers. Cow's milk could be a potential source of equol in the human diet, but more studies are needed on the changes in equol concentration during the technological processing of milk and dairy products. This first exploratory study sought to assess the impact of industrial skimming and microfiltration processes on equol concentration in conventional cow's milk. The milk samples used in this study came from bulk cow’s milk collected in Wallonia (Belgium), by a local dairy and processed in a local cheese factory. Six random sampling were conducted during spring and, for each of them, samples from raw, skimmed and microfiltered milk were analyzed. Equol was present in all samples at a concentration of between 3.2 and 10.3 µg.L-1. A Wilcoxon's signed rank test was then performed on the difference of data, having raw milk as reference, irrespective of the collection date. The results showed that the skimming process slightly increased the equol concentration in milk and therefore that equol had no or little affinity with the lipid milk fraction. The results also showed that, with the microfiltration process, a small proportion of equol was retained. Equol concentration has returned to the same level as that found in raw milk. This might be because of a chemical affinity either with bigger molecules that are physically retained or through direct interaction with the membrane. This scoping study paves the way for more extensive studies on the interaction between equol and other components of the milk. [less ▲]

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See detailA one year survey of seagrass primary productivity using the diving-PAM technique
Richir, Jonathan ULg; Abadie, Arnaud; Grosjean, Philippe et al

Poster (2016, October 18)

Marine magnoliophytes are major primary producers in coastal benthic habitats worldwide. They play a crucial role in the global carbon cycle (one of the more efficient blue carbon wells). Hence, it is ... [more ▼]

Marine magnoliophytes are major primary producers in coastal benthic habitats worldwide. They play a crucial role in the global carbon cycle (one of the more efficient blue carbon wells). Hence, it is necessary to characterise the eco-systemic services seagrass meadows provide. Posidonia oceanica (L.) Delile, the main Mediterranean seagrass species, has high foliar and belowground biomass production. Several methods have been used so far to measure its primary production (e.g., using incubation bells, optodes, biomass and elementary content measurements). A less used method relies on chlorophyll fluorescence measurements through the Pulse Amplitude Modulated (PAM) fluorometry method (Diving - PAM). In the framework of the STARECAPMED project, this study aimed to determine weekly to bimonthly over a one-year period the photosynthetic responses (Yield, relative Electron Transfer Rate, Rapid Light Curve) of P. oceanica. The survey was performed at 10m depth in a pristine meadow (Calvi, Corsica, France). To obtain reliable and comparable data, the protocol was standardized: measurements were performed on the convex middle part of the third leaf, at zenith, during shiny and calm weather days. Results showed that the plant displayed a well-marked seasonality. The mean ETR (μmol e- m-2 s-1 ) of the plant ranged from 2.17 in winter to 21.9 in summer and was linearly correlated throughout the year with the in situ irradiance (PAR irradiance taken perpendicularly to the surface, in the average leaf orientation). The ETR plateaus of the RLCs, ranging from 10.9 to 35.0, and their corresponding maximum PAR intensities evolved similarly. These results demonstrated both the adaptation and the seasonal plasticity of the meadow’s photosynthetic system. Overall the non-destructive PAM technique is a powerful and cost-effective tool to assess the primary productivity of seagrass meadows where other techniques (e.g. optodes) cannot be used and when direct sampling (e.g. biomass measurements) is not allowed. [less ▲]

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See detailTowards precision beta-decay measurements with laser-cooled argon-35
Lenaers, Florence ULg; Glover, Rohan ULg; Bastin, Thierry ULg

Poster (2016, October 18)

Laser cooling and trapping techniques enjoy a solid reputation as powerful and elegant providers of well-localized, backing-free sources. Not only does this hold true within the atomic physics and quantum ... [more ▼]

Laser cooling and trapping techniques enjoy a solid reputation as powerful and elegant providers of well-localized, backing-free sources. Not only does this hold true within the atomic physics and quantum optics communities, but also beyond. Most notably, these techniques have recently joined the toolbox of low-energy, high-precision tests of the Standard Model. Our work with argon falls within the subset of nuclear beta decay studies, which have historically played a key role in establishing and testing our understanding of weak-interaction physics. In this framework, precision measurements of the beta asymmetry correlation parameter in the beta decay of Ar-35 have been identified as one promising probe for physics beyond the Standard Model. Our current work focuses on the development of a test magneto-optical trap (MOT) setup for Ar-40 as a preliminary step towards cooling and trapping Ar-35 atoms. In particular, much effort is being put into optimizing the efficiency of our source apparatus, which is crucial to achieving high enough statistics in the final trap. We present the current status of the experimental realization of our setup. Measuring the beta asymmetry correlation parameter requires highly spin-polarized samples. Therefore, in parallel to our experimental work, we are numerically investigating methods for generating, controlling and precisely measuring the degree of spin polarization of a sample of Ar-35 atoms. We also aim at being able to quickly switch between a polarized and a non-polarized sample so as to better understand systematic effects. We report on the progress of our theoretical modeling. [less ▲]

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See detailMobility of 137Cs, 10Be and 210Pb in soil as a function of the soil texture, organic matter content and pH
de Tombeur, Félix ULg; Cornu, Sophie; Bourlès, Didier et al

Poster (2016, October 18)

Vertical matter transfer processes (bioturbation and <2μm translocation) in soils and their dynamics are up to now poorly constrained although they are responsible for the temporal evolution of the ... [more ▼]

Vertical matter transfer processes (bioturbation and <2μm translocation) in soils and their dynamics are up to now poorly constrained although they are responsible for the temporal evolution of the ecosystem services. In order to better constrain and quantify these processes, a kinetic quantification of the involved transfers based on vertical profiles of 210Pb (xs), 10Be and 137Cs has been developed for Luvisols in which soluble transfers could be neglected. The range of applicability of this type of approach was nevertheless not tested. In this work, we analyzed 210Pb (xs), 10Be and 137Cs in soils exhibiting gradients of organic matter, pH and < 2 μm fraction (Podzol, Andosol Ferralsol, Leptosol). Acidic soils and large organic matter contents were considered. The depth distribution of the studied isotopes was then interpreted as a function of the organic matter content, the soil pH and its < 2 μm fraction. This demonstrates that 10Be and 137Cs losses occur under soluble form in the Podzol, especially under forest, more acid, for the latter. Soluble 10Be transfers were also identified in the Andosol when they were considered as negligible in the Leptosol. For 210Pb (xs), soluble transfers are also probable for soils with pH less than 5.5 (Andosol and Ferralsol) and strong affinity for organic matter has been demonstrated. Thus, under acidic conditions and low < 2 μm fraction, soluble transfer cannot neglected anymore. [less ▲]

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See detailDiversity, dynamics and trophic ecology of animal communities associated to Posidonia oceanica (L.) Delile macrophytodetrital accumulation: synthesis of a ten year study
Lepoint, Gilles ULg; Borges, Alberto ULg; Champenois, Willy ULg et al

Poster (2016, October 17)

In the Mediterranean, Neptune grass Posidonia oceanica, produces a huge quantity of detrital biomass. These macrophytodetritus may accumulate in shallow waters, forming litter accumulations colonised by ... [more ▼]

In the Mediterranean, Neptune grass Posidonia oceanica, produces a huge quantity of detrital biomass. These macrophytodetritus may accumulate in shallow waters, forming litter accumulations colonised by abundant, yet understudied, animal communities. These accumulations are especially foraged by juvenile and adult fishes. Here, we aim to synthesize results obtained over the last ten years regarding diversity, dynamics and trophic ecology of associated meio- and macrofauna. Accumulations are found throughout the year but important seasonal and short-term variability in composition, quantity and physico-chemical parameters inside the accumulation is observed. Accumulations are dominated by respiration (litter degradation), however, primary production occurs at exposed surfaces (epiphytic production). Meio- and macrofauna have distinct traits in comparison to adjacent habitats (seagrass meadows or epilithic algae communities). A physico-chemical gradient occurs inside accumulations which partially defines assemblage composition and distribution. Meiofauna, in particular harpacticoid copepods, is diverse, abundant and composed of species from seagrass meadows, water column and sediment. In contrast, macrofaunal assemblages are simplified compared to the ones occurring in the seagrass meadows and are dominated by amphipods. Litter accumulations display a lower macrofaunal diversity than do seagrass meadows, but a higher abundance and animal biomass. Meio- and macrofauna show a high trophic diversity, dominated by ingestion and assimilation of epiphytes (macroalgae and, probably, detrivorous microbiota). Moreover, direct or indirect assimilation of carbon originating from seagrass detritus is demonstrated for many species. Although diverse trophic niches were observed, the assemblage showed a simplified trophic web structure compared to the seagrass meadows. Detritivorous organisms dominate this assemblage and are more abundant in the litter than in the living meadows. Consequently, according to its abundance and the fact it consumes directly and indirectly seagrass material, fauna associated to litter accumulation may play a significant role in the degradation and transfer to higher trophic level of detrital seagrass carbon. [less ▲]

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See detailLe rôle de la compréhension de la notion de modèle dans la vision des futurs enseignants des sciences de la structure atomique
Karous, Hamad ULg; Nihant, Brigitte ULg; Leyh, Bernard ULg

Conference (2016, October 16)

Atomic theory is a key concept in science education. However, it was found that students often have difficulties in learning the fundamental notions of this theory. These difficulties reveal themselves in ... [more ▼]

Atomic theory is a key concept in science education. However, it was found that students often have difficulties in learning the fundamental notions of this theory. These difficulties reveal themselves in the expression of some preconceptions which tend to persist over time and thus may occur up to the higher education level. The goal of our study is to highlight some difficulties related to the notions of models and modelling notions and to illustrate the causes of appearance of such preconceptions. To do this, two questionnaires were submitted to future sciences teachers (chemistry, biology and physics) who did a training at the University of Belgium in 2014-2015 and in 2015-2016 (40> participants). The first questionnaire deals with the modelling concept and process while the second one is about the atomic model diagrams which illustrate many textbooks. Identifying the nature of the models and their construction may lead to misconceptions while acquiring basic scientific knowledge. [less ▲]

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See detailUne hypokaliémie à Liège
VALDES SOCIN, Hernan Gonzalo ULg; EMONTS, Patrick ULg; HAMOIR, Etienne ULg et al

Conference (2016, October 15)

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See detailIs there a place for BTR markers in renal osteodystrophy?
DELANAYE, Pierre ULg

Conference (2016, October 15)

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See detailTreg, Th17 and γδ T cells during normal and abortive pregnancy
Polese, Barbara ULg; Gridelet, Virginie ULg; Munaut, Carine ULg et al

Poster (2016, October 14)

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See detailDifferent and synergistic effect of 5-Azacytidine and Rapamycin on ex vivo expansion of natural human T Regulatory cells
Conteduca, Giuseppina ULg

Poster (2016, October 14)

Natural T regulatory cells (Treg) are challenging to expand ex vivo, and this has severely hindered in vivo evaluation of their therapeutic potential. 5-Azacytidine (5-azaC) and Rapamycin (RAPA) are ... [more ▼]

Natural T regulatory cells (Treg) are challenging to expand ex vivo, and this has severely hindered in vivo evaluation of their therapeutic potential. 5-Azacytidine (5-azaC) and Rapamycin (RAPA) are immunosuppressive drugs that promote selectively the expansion of CD4+CD25highFoxp3+ regulatory T cells.: We investigated whether 5-azaC and RAPA could be used together to promote the ex vivo expansion of Tregs purified from adult human peripheral blood.We found that 5-azaC helped maintain FOXP3 expression during the expansion process probably by promoting the conversion of T conventional (Tconv) in Treg, instead Rapa induces selectively apoptosis in Tconv cells and expansion in Treg. Addition of 5-azaC to RAPA treated cultures improved gene expression of FOXP3, CD25, STAT5 and TGF-B resulted in enhanced Treg expansion and suppressive activity. Also Rapa and 5-AzaC combination sustain Bcl-2 protein expression in Treg conferring resistance to apoptosis process. 5-azaC may have utility in ex vivo expansion of human Tregs, not as a single agent, but in combination with RAPA. These data may considerably accelerate the development of immunotherapeutic approaches for the treatment of autoimmune disease or posttransplant alloreactions by the adoptive transfer of nTreg cells [less ▲]

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See detailImpact of vitamin D binding protein on calculated free 25OH vitamin D
VRANKEN, Laura ULg; BECKAERT, Anne-Catherine; GENDEBIEN, Anne-Sophie ULg et al

Poster (2016, October 14)

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See detailTreg, Th17 and γδ T cells during normal and abortive pregnancy
Polese, Barbara ULg; Gridelet, Virginie ULg; Munaut, Carine ULg et al

Conference (2016, October 14)

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See detailSeasonal changes and steroid control of perineuronal nets in the song control system
Cornez, Gilles ULg; Shevchouk, Olesya ULg; Madison, Farrah et al

Conference (2016, October 14)

Perineuronal nets (PNNs) are aggregations of extracellular matrix components surrounding the soma of some neurons, mainly GABAergic interneurons expressing the calcium binding protein parvalbumin (PV ... [more ▼]

Perineuronal nets (PNNs) are aggregations of extracellular matrix components surrounding the soma of some neurons, mainly GABAergic interneurons expressing the calcium binding protein parvalbumin (PV+). In mammals, the development of PNNs limits synaptogenesis around PV+ neurons and PNNs have been validated as a marker characterizing the end of critical periods for some types of learning. In oscines, song learning is limited to critical periods either during ontogeny in close-ended learners such as zebra finches or during specific phases of the annual cycle in open-ended learners such as canaries or starlings. In zebra finches, PNN expression increases when the song crystalizes and this increase is markedly inhibited if juveniles are deprived from a tutor, which is known to delay the closure of the critical period for song learning. Nothing is known however about a possible role of PNNs in adult seasonal plasticity of open-ended learners. We compared PNNs expression and their colocalization with PV+ neurons in photosensitive, photostimulated, and photorefractory starlings. Although this treatment affected as expected the testes volumes, testosterone concentrations and volumes of song control nuclei, it did not markedly change the expression of PNNs or PV+ neurons in song control or auditory nuclei. In a second experiment, brains of female canaries implanted with testosterone for 1, 2, 9, or 21 days displayed an increase of the total numbers of PV+ neurons and PNNs in HVC, the total number of PNNs in nucleus robustusarcopallialis (RA), the density of PNNs in Area X and the %PV+ neurons surrounded by PNNs in RA and Area X. Interestingly the density of PNNs in song control nuclei progressively decreases from zebra finches to canaries to starlings in parallel with the increased song plasticity in these species supporting the notion that PNNs may limit brain and thus song plasticity in a species-typical manner. [less ▲]

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See detailMachine monstrueuse. Retour sur l'excès, l'exhibition et le gros plan
Jousten, Lison ULg

Conference (2016, October 14)

La communication propose de revenir sur certains aspects monstrueux du cinématographe. À la fois vectrice et créatrice d’un imaginaire intimement associé à la machine, il s’agit principalement d’envisager ... [more ▼]

La communication propose de revenir sur certains aspects monstrueux du cinématographe. À la fois vectrice et créatrice d’un imaginaire intimement associé à la machine, il s’agit principalement d’envisager comment cette « machine à voir » (Viva Paci, 2012) est aussi étroitement liée à la question de la monstruosité. [less ▲]

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See detailHow to measure renal function?
DELANAYE, Pierre ULg

Conference (2016, October 14)

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See detailImpact of vitamin D binding protein on calculated free 25OH vitamin D
VRANKEN, Laura ULg; BECKAERT, Anne-Catherine; GENDEBIEN, Anne-Sophie ULg et al

Conference (2016, October 14)

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See detailThe Terra Mosana Project
Billen, Roland ULg

Conference (2016, October 14)

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See detailA full inference toolbox to measure multivariate relative dispersion
Aerts, Stéphanie ULg; Haesbroeck, Gentiane ULg

Conference (2016, October 14)

In the univariate context, coefficients of variation (CV) are widely used to compare the dispersion of a variable in several populations. When the comparison is based on p characteristics however, side-by ... [more ▼]

In the univariate context, coefficients of variation (CV) are widely used to compare the dispersion of a variable in several populations. When the comparison is based on p characteristics however, side-by-side comparison of marginal CV’s may lead to contradictions. In this talk, we present a multivariate coefficient of variation (MCV), defined as the inverse of the Mahalanobis distance between the mean and the origin, whose usefulness is demonstrated in some applications in finance and analytical chemistry. A full inference toolbox is provided for practitioners: several parametric and non-parametric bias-correction methods are suggested and compared, and some exact and approximate confidence intervals are built and analyzed in a simulation study. Finally, in order to meet the practical need to compare MCV’s in K populations, some asymptotic statistical testing procedures are derived, whose finite-sample performance is empirically assessed. Throughout the talk, the robustness of the techniques will be discussed. As a by-product, a test statistic allowing to reliably compare K univariate CV’s even in presence of outliers will be outlined. [less ▲]

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See detailA Safe and Reliable Continuous-Flow System towards Methylphenidate Hydrochloride
Gerardy, Romaric ULg; Monbaliu, Jean-Christophe ULg

Poster (2016, October 13)

The batch-to-flow translation of a carbene-based strategy for the diastereoselective preparation of the active pharmaceutical ingredient threo-methylphenidate hydrochloride is presented. The continuous ... [more ▼]

The batch-to-flow translation of a carbene-based strategy for the diastereoselective preparation of the active pharmaceutical ingredient threo-methylphenidate hydrochloride is presented. The continuous-flow system implies the generation of an explosive organic azide, its consumption in a diazo transfer reaction, an intermediate purification step followed by a Rh(II)-catalyzed carbene C-H insertion reaction that produces threo-enriched N-Boc-methylphenidate. Boc-deprotection is carried out off-line and provides methylphenidate hydrochloride in 19% isolated yield (3 steps fully telescoped) or 38% isolated yield (sequential). [less ▲]

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See detailPILs as a new active material for radical organic batteries
Aqil, Mohamed ULg; Ouhib, Farid ULg; Aqil, Abdelhafid ULg et al

Poster (2016, October 13)

Detailed reference viewed: 17 (2 ULg)
See detailDesign and synthesis of Fe2O3 nanoparticles/N-doped porous carbon structures as high performance electrode for lithium ion battery
Alkarmo, Walid ULg; Ouhib, Farid ULg; Aqil, Abdelhafid ULg et al

Poster (2016, October 13)

Thanks to their fascinating physical properties such as high surface area, multidimensional electron transport pathways and good mechanical strength, three dimensionally (3D) interconnected carbon porous ... [more ▼]

Thanks to their fascinating physical properties such as high surface area, multidimensional electron transport pathways and good mechanical strength, three dimensionally (3D) interconnected carbon porous frameworks have emerged as attractive materials for various electrochemical energy storage/conversion devices, including Li-ion batteries (LIBs), Li−S batteries, supercapacitors and fuel cells. In this context, a hierarchically structured macro- and mesoporous N-doped carbon with dispersed Fe2O3 nanoparticles (NDC@Fe2O3) is prepared by thermal treatment of a novel composite composed by PMMA particles decorated by graphene oxide (GO), PPy and iron salts. The NDC@Fe2O3 composite exhibited high surface area with a hierarchical pores structure. The combination of Fe2O3 nanoparticles with porous carbon to form hybrid anode has been an efficient way to maintain the electronic integrity of the whole electrode since the carbon acts as a buffer layer to accommodate the volume variation and to provide multidimensional electron transport pathways during the charge/discharge process. [less ▲]

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Peer Reviewed
See detailCurating Canons of Comics: Daniel Clowes and Art Spiegelman's 'Private' Museums
Crucifix, Benoît ULg

Conference (2016, October 13)

As guest of honor at the 2012 International Comics Festival in Angoulême, Art Spiegelman did not only have a retrospective exhibition devoted to his work, but was also invited to act as the curator of the ... [more ▼]

As guest of honor at the 2012 International Comics Festival in Angoulême, Art Spiegelman did not only have a retrospective exhibition devoted to his work, but was also invited to act as the curator of the CIBDI museum’s archive, producing his own ‘private’ museum, as suggested by the exhibition title Le Musée privée d’Art Spiegelman. Similarly, for Daniel Clowes’s retrospective exhibit in Columbus, the Wexner Center of the Arts hosted Eye of the Cartoonist: Daniel Clowes’s Selections from Comics History, based on Clowes’s curatorial choices from the Billy Ireland Cartoon Library and Museum. In each case, the cartoonist literally frames the history of comics and exhibits his personal canon of comics. As Spiegelman put it: “I have been allowed to highjack the Centre of Bande dessinée Museum to replace what is primarily the Francophone patrimony of comics with my own perverse and private map of what comics are.” This quote clearly embodies the dual facet of such exhibitions – collective and singular, shared and idiosyncratic – foregrounding the anchorage of individual graphic novelists within traditions of comics. Articulated around personal canons, these two exhibitions offer fresh perspectives to think about canonization in the comics world. Albeit focused on two 'canonized' graphic novelists, this case study nuances the auteurism of comics scholarship: not only are these exhibitions the result of collaborative work, they also recast the author in the role of curator. The key aspect of these exhibitions lies in a canonizing act of selection that circulates in varied material forms showcasing the authors’ influences. Mapping out how Clowes and Spiegelman frame their entanglement with the past of comics within the contexts of institutions that store its archive, I will examine the specificities of these exhibitions in relation to a body and style of historiography I call ‘authors’ histories of the comics.’ [less ▲]

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See detailNovel promising way to synthesize non-isocyanate polyurethanes (NIPUs) for innovative coating applications against corrosion protection of metal surfaces
Panchireddy, Satyannarayana ULg; Grignard, Bruno ULg; Thomassin, Jean-Michel ULg et al

Poster (2016, October 13)

Polyurethanes (PUs) are one of the most widely used polymeric materials with applications in automotive, as sealants, adhesives, decorative, aircraft topcoats, for coatings or as foams for thermal and/or ... [more ▼]

Polyurethanes (PUs) are one of the most widely used polymeric materials with applications in automotive, as sealants, adhesives, decorative, aircraft topcoats, for coatings or as foams for thermal and/or acoustic insulation. Industrially, PUs are produced by copolymerization between polyols and polyisocyanates. Because of the toxicity issues related to the use of isocyanates, there is a need to develop greener and safer route to produce such polymers. This study reports on the synthesis of new sustainable isocyanates-free PU (NIPU) coatings for aluminium anticorrosion. In a first step, bio- and CO2-sourced cyclic carbonates monomers were synthesized by coupling of epoxydized vegetable oils with CO2 using a new efficient bicomponent organocatalyst. In second step formulations including cyclic carbonates/amines/additives were optimized to produce highly adhesive cross-linked NIPU coatings that show good resistance against solvents and long-term barriers preventing the corrosion of the aluminiumsubstrate [less ▲]

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See detailAlkylcobalt as source of radicals for the controlled polymerization of less activated vinyl monomer
Demarteau, Jérémy ULg; Cordella, Daniela ULg; Kermagoret, Anthony et al

Poster (2016, October 13)

Detailed reference viewed: 10 (2 ULg)
See detailSynthesis and characterization of non-isocyanate polyurethane (NIPU) hydrogels
Gennen, Sandro ULg; Grignard, Bruno ULg; Thomassin, Jean-Michel ULg et al

Poster (2016, October 13)

Due to its good biocompatibility, biodegradation and excellent mechanical properties, polyurethane (PU) is a material of choice for biomedical applications (gloves, tubing, artificial membranes…) and, as ... [more ▼]

Due to its good biocompatibility, biodegradation and excellent mechanical properties, polyurethane (PU) is a material of choice for biomedical applications (gloves, tubing, artificial membranes…) and, as hydrogels, it was used as wound dressing, soft contact lenses, drug delivery systems and scaffolds for tissue engineering. Classically, PU are synthesized by a step-growth polymerization between poly (di-)ols and poly (di-) isocyanates. Due to the toxicity of isocyanates, REACH regulations have changed and, today, there is a need to develop greener and safer route to produce isocyanate-free PUs. This contribution focus on the synthesis of NIPU hydrogels by copolymerizing a bifunctional CO2-sourced hydrophilic PEG bi-cyclic carbonate with diamines in presence of a cross- linker. The PEG bi-cyclic carbonates was prepared via a CO2/epoxide coupling reactions using a new efficient organocatalytic system based on the use of an ammonium salt (TBAI) in combination with a fluorinated alcohol. [less ▲]

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See detailIntegrated continuous flow photoreactors: Photooxidation of (L)-methionine with singlet oxygen
Emmanuel, Noémie ULg; Mendoza Gallego, Carlos ULg; Lismont, Marjorie ULg et al

Poster (2016, October 13)

Development of photochemistry in macroscopic batch reaction vessels is hampered due to inherent limitations: light penetration remains superficial, resulting in inhomogeneous irradiation and hence to side ... [more ▼]

Development of photochemistry in macroscopic batch reaction vessels is hampered due to inherent limitations: light penetration remains superficial, resulting in inhomogeneous irradiation and hence to side-reactions or product degradation due to overexposure. The recent implementation of photochemical processes in microreactors under continuous-flow conditions appeared to be much more powerful than its batch analogue in terms of irradiation efficiency and light penetration. Furthermore, the fine control of residence time ensures an accurate control of the irradiation time, avoiding side-reactions and degradation. The photooxidation of (L)-methionine with singlet oxygen using Rose Bengal as a sensitizer was successfully implemented in a microreactor setup and led to total and selective conversion into methionine sulfoxide, an important building block for the organic synthesis of peptides or functionalized amino acid. The reaction was performed in 20 min while the same reaction in batch took 2h. [less ▲]

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See detailLeaving Gauss: extending Gaussian variance bounds to arbitrary targets
Clette, Emilie ULg; Swan, Yvik ULg

Conference (2016, October 13)

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See detailAccuracy of dichotomous logistic IRT models to estimate ability with multiple choice items
Magis, David ULg

Conference (2016, October 13)

This presentation focuse son multiple-choice items without any control or correction for guessing. Most often these items are recoded as binary outcomes (TRUE-FALSE) and logistic IRT models are calibrated ... [more ▼]

This presentation focuse son multiple-choice items without any control or correction for guessing. Most often these items are recoded as binary outcomes (TRUE-FALSE) and logistic IRT models are calibrated using these recoded data. The main purpose of this study is to highlight the limits of this approach by (a) proposing a simulation model to allow for guessing at various levels of ability, and (b) comparing the dichotomous approach to the use of nominal response model. Preliminary simulations indicate that none of the models are very accurate to estimate latent abilities accurately, though the nominal response model has fewer bias then the dichotomous models. [less ▲]

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See detailSemiochemicals to control wireworms
Verheggen, François ULg

Conference (2016, October 12)

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See detailMigration in Extreme Climate Change Scenarios
Gemenne, François ULg; Blocher, Julia; de Longueville, Florence et al

Conference (2016, October 12)

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See detailStudy of the volatile organic compounds in the interaction between banana plants and the fungal disease Fusarium oxysporum f.sp. cubense Tropical Race 4 (FocTR4)
Berhal, Chadi ULg; De Clerck, Caroline ULg; LEVICEK, CAROLINA et al

Conference (2016, October 11)

Banana fruit (Musa sp.) ranks fourth in term of worldwide production, and has economical and nutritional key values. Cavendish is the popular and most dominant variety of the dessert banana group ... [more ▼]

Banana fruit (Musa sp.) ranks fourth in term of worldwide production, and has economical and nutritional key values. Cavendish is the popular and most dominant variety of the dessert banana group. Nowadays, it is endangered by the emergent race of the Panama disease, caused by Fusarium oxysporum f.sp. cubense TR4 (Foc TR4). Despite the importance of the Volatile Organic Compounds (VOCs), which are secondary metabolites with a high vapour pressure, and their role in plant protection, they have never been documented as a way to manage this disease on Cavendish. Thus, the aim of this PhD thesis is to study the VOCs in the specific interaction Cavendish/Foc TR4, as a way to manage this threat. Based on the work previously done with other plants at Gembloux Agro-Bio Tech, a protocol was optimized for the extraction of the banana plant’s VOCs. In parallel, models of in-vitro and in-vivo inoculations are under development to distinguish the VOCs emitted by the root zone and those emitted by the aerial part of the plant. The results of the first analysis showed that the majority of the Cavendish VOCs belongs to the terpenes group, as well as ketones and an organic ester. The VOCs specifically emitted during the plant-pathogen interaction will be studied more in depth by evaluating their effect on the plant and the pathogen. At long term, and depending on the results, agro-ecological applications of this knowledge could include breeding for new variety or combining banana with other plants expressing VOCs against Foc TR4, applying VOCs on field to stimulate plant defences or to contain the pathogen. [less ▲]

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See detailLiège Game Lab Showcase
Dozo, Björn-Olav ULg

Conference (2016, October 11)

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See detailRelative positioning with Galileo E5 AltBOC code measurements
Deprez, Cécile ULg; Warnant, René ULg

Conference (2016, October 11)

For over a decade, Europe has started to develop its own Global Navigation Satellite System (GNSS). Initiated in 1999, the Galileo project finally materialized a few years ago, recently experiencing a ... [more ▼]

For over a decade, Europe has started to develop its own Global Navigation Satellite System (GNSS). Initiated in 1999, the Galileo project finally materialized a few years ago, recently experiencing a prompt expansion with the launch, in 2015 and 2016, of 8 satellites belonging to the Full Operational Capability (FOC) generation. Broadcasting new signals, with new modulations, the first studies addressing this system reveal promising level of precisions on both code and carrier phase observables. Still in test phase but already available for measurements, this recent system can be used to estimate positions. Among the new signals developed by the Galileo program, the Galileo E5 AltBOC, also known as Galileo E5a+b or Galileo E5, reveals great characteristics. Thanks to its particular AltBOC modulation, it allows more precise code and phase observations besides being less affected by multipath. These innovative performances should lead to more precise position estimations than with any other signal presently in use. In this master thesis, we compared the positions estimated with GPS and Galileo on their different frequencies (L1, L2, L5 for GPS and E1, E5a, E5b and E5 AltBOC for Galileo). We combined the observations made by the receivers belonging to the University of Liège (2 Trimble NetR9 receivers, 1 Septentrio PolaRxS receiver and one Septentrio PolaRx4 receiver) in double differences (DD) combinations using various configurations (zero baseline (ZB), short baseline (SB) and medium baseline (MB)). It turns out that Galileo E5 AltBOC outperforms all other signal in terms of observation precision (estimated in a DD SB configuration in order to remove atmospheric and clock error sources affecting the signal). Regarding the precision obtained on the computed positions, we could reach a few decimetres with Galileo E5 code pseudoranges on baselines up to 25 kilometres. [less ▲]

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See detailAnorexie et régulation émotionnelle
Englebert, Jérôme ULg

Conference (2016, October 08)

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Peer Reviewed
See detailShaping (im)mobility: borders, camps, and non-state actors
Da Silva, Amanda Carolina ULg

Conference (2016, October 07)

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See detailIntroduction
Masson, Christophe ULg

Conference (2016, October 07)

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See detailThe reinforcement opportunitie of a cross-border train connection: the example of the railway between Liège (Belgium) and Maastricht (Netherlands)
Wilmotte, Pierre-François ULg; Lambotte, Jean-Marc ULg; Cools, Mario ULg et al

Conference (2016, October 07)

The research topic was to understand why it is so difficult to increase the train frequency on Liège - Maastricht line. The outline of our presentation was structured in 4 parts : the (current, potential ... [more ▼]

The research topic was to understand why it is so difficult to increase the train frequency on Liège - Maastricht line. The outline of our presentation was structured in 4 parts : the (current, potential and future) supply, the (current, potential and future) demand, some options to solve the deadlock between the Belgian's and the Dutch's outlooks and the conclusions. [less ▲]

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See detailIrrigated food systems in Maradi Republic of Niger: A comparison between operating accounts
Andres, Ludovic ULg; Dambo, Lawali; Bode, Sambo et al

Conference (2016, October 07)

In Niger, most food systems are based on pluvial crops (millet, sorghum and cowpea). However, during the last decade, agricultural policy and technical and financial partners focused on increasing the ... [more ▼]

In Niger, most food systems are based on pluvial crops (millet, sorghum and cowpea). However, during the last decade, agricultural policy and technical and financial partners focused on increasing the productivity of irrigated food products. The region of Maradi, located in the Central-South of Niger, is an area traditionally dedicated to agriculture. Some parts of this region are particularly adapted for irrigation, especially the Goulbi of Kaba and the Goulbi of Maradi valleys. The goal of this study is to establish the socio-economic situation of the main irrigated food productions, based on the following indicators: (i) the crop management technics used; (ii) the results of the operating account; and (iii) the comparison between the village and the adoption of new technic (farmer field school). This paper is based on direct surveys conducted in three areas of the Maradi’s region: Soumarana (commune of Safo, department of Madarounfa); N’Yelwa (commune of Madarounfa, department of Madarounfa); Madarounfa (commune of Madarounfa, department of Guidan Roumdji). The software used is Minitab and Excel. The results highlight a good perspective for the irrigation system but this food system is conditioned by the petroleum price and some other input (fertilizer and seed). The operating accounts show that irrigation is a non-negligible income source, which increases the resilience of the farmers. [less ▲]

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See detailQuelques réflexions méthodologiques sur les abandons de sanctuaires en Grèce antique
Palamidis, Alaya ULg

Conference (2016, October 07)

The archeological identification of the abandonment of cults faces two main difficulties. First, the absence of material posterior to a certain date in an excavated sanctuary does not necessarily mean ... [more ▼]

The archeological identification of the abandonment of cults faces two main difficulties. First, the absence of material posterior to a certain date in an excavated sanctuary does not necessarily mean that the sanctuary was abandoned. Secondly, the abandonment of a sanctuary does not necessarily mean the abandonment of the cult, since the cult may have been transferred to another sanctuary. [less ▲]

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See detailDevelopment of polymer-based systems for healthcare applications
Grandfils, Christian ULg

Conference (2016, October 06)

Detailed reference viewed: 13 (1 ULg)