References of "Unpublished conference/Abstract"
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See detailSynthetic Helical Nanoarhitectures: Mechanochemical study and synthesis
Devaux, Floriane ULiege; Li, Xuesong; Huc, Ivan et al

Conference (2017, March 31)

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See detailThe shadow of Montaigne in the political works of Gabriel Naudé
Decoster, Sara ULiege

Conference (2017, March 31)

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See detailLes Q-Codes et la terminologie multilingue de médecine générale et de famille
Jamoulle, Marc ULiege; Schuers, Matthieu; Ouvrard, Patrick et al

Conference (2017, March 31)

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Detailed reference viewed: 140 (2 ULiège)
See detailPrecision design of novel bio-based and ethylene-based copolymers: application to advanced nanocomposites
Scholten, Philip ULiege; Detrembleur, Christophe ULiege; Demarteau, Jérémy ULiege et al

Conference (2017, March 30)

Polyolefins are an inexpensive class of compounds that can be used to prepare a plethora of different materials. Poly(ethylene) is the worldwide most produced polymer and is mostly synthesised by free ... [more ▼]

Polyolefins are an inexpensive class of compounds that can be used to prepare a plethora of different materials. Poly(ethylene) is the worldwide most produced polymer and is mostly synthesised by free radical polymerisation or catalytic coordination insertion using high temperature and pressure. The controlled radical polymerisation of ethylene is very difficult to achieve because of secondary reactions of this unconjugated monomer, e.g. chain transfer and termination reactions. Cobalt-mediated radical polymerisation (CMRP) represents a solution to control its polymerisation in mild conditions: in a reversible deactivation mechanism, a cobalt complex reversibly traps the active growing chains and converts them into dormant species, avoiding side reactions and allowing for a controlled polymerisation. Using CMRP, statistical copolymers of ethylene and vinyl acetate (VAc) have been synthesised, as well as block-like and block copolymers. Furthermore, functionalisation of the α- and ω-chain ends are now possible. Polymerising a vinyl bio-based monomer using CMRP has also been investigated, with the goal of forming ethylene copolymers. The copolymerisation behaviour of this novel monomer was investigated using vinyl acetate as a model and the structure and thermal properties were analysed. The monomer is very promising and copolymerisations with ethylene are undergoing. It is expected, that these completely new and highly interesting materials may act as compatibilisers for the dispersion of natural polymers, such as cellulose, into various polymer matrices. [less ▲]

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See detailThe ballistic performance of prehistoric weapons: first results of a comparative study
Coppe, Justin ULiege; Clarenne, Valérian; Pirlot, Marc et al

Conference (2017, March 30)

Projectile points have recently taken a prominent position in debates on the complexity of Paleolithic human behavior. While the appearance of hunting weapons in the archaeological record was a central ... [more ▼]

Projectile points have recently taken a prominent position in debates on the complexity of Paleolithic human behavior. While the appearance of hunting weapons in the archaeological record was a central element in early discussions, the debate has shifted towards the appearance of specific projecting modes. Given that the organic propulsion tools (bow, spear-thrower) are only rarely preserved, energy has been invested in experiments to explore how the projecting mode can be identified based on the analysis of stone points. These experiments usually attempt to control selected parameters in projectile use (e.g., speed, target, angle of impact), but the ballistic parameters that are used are generally based on heterogeneous and not commonly reported studies. Little research has focused on the measurement of the complete ballistic performance of prehistoric weapons. We present the first results of a systematic ballistic study that quantifies and compares different modes of propulsion. [less ▲]

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See detailL’institutionnalisation de l'Islam en Belgique, du local au fédéral
Husson, Jean-François ULiege

Conference (2017, March 30)

Reconnu comme culte en Belgique en 1974, le culte islamique a été le premier organisé sur une base provinciale et non plus locale. Une autre de ses particularités réside dans le fait que de nombreuses ... [more ▼]

Reconnu comme culte en Belgique en 1974, le culte islamique a été le premier organisé sur une base provinciale et non plus locale. Une autre de ses particularités réside dans le fait que de nombreuses mosquées ne sont pas reconnues, soit parce qu’elles ne le souhaitent pas, soit parce que la démarche de reconnaissance n’a pas encore abouti. Cela n’est pas sans conséquence sur les relations avec les autorités locales d’une part, sur le fonctionnement global du culte islamique d’autre part. Enfin, la résurgence des questions d’ordre public et de sécurité amène de nouvelles questions en matière de régulation, tant dans le champ administratif que sécuritaire. Plus de quarante ans après la reconnaissance du culte islamique, quelles conclusions peut-on en tirer quant à l’efficacité de la régulation publique – locale, provinciale, régionale et fédérale ; à l’équité de son traitement en regard des autres cultes et organisations philosophiques reconnus ; au modèle « belge » de « vivre ensemble ». [less ▲]

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See detailSurvivre au maître. La vie artistique à Rome au lendemain de la mort de Raphaël
Trizzullo, Eva ULiege

Conference (2017, March 29)

La mort de Raphaël Sanzio survenue à Rome le 6 avril 1520 provoqua un électrochoc au sein du milieu culturel romain. Célébré de son vivant, cet artiste incontournable le fut tout autant dans la mort. En ... [more ▼]

La mort de Raphaël Sanzio survenue à Rome le 6 avril 1520 provoqua un électrochoc au sein du milieu culturel romain. Célébré de son vivant, cet artiste incontournable le fut tout autant dans la mort. En attestent particulièrement les témoignages de contemporains, qu’ils soient hommes de lettres ou ambassadeurs. Cette communication sera à la fois l’occasion de se pencher sur ces précieux témoignages mais également d’appréhender comment cette disparition brutale fut perçue à travers l’historiographie ancienne et moderne. Ensuite, on analysera les conséquences de cet événement sur les développements artistiques de la première moitié du XVIe siècle. En effet, durant le printemps 1520, Raphaël était sollicité de toute part. Mais l’artiste n’était pas seul, et était secondé par une myriade de collaborateurs. Une fois le maître mort, qu’advint-il des commandes en cours ? Et surtout, quel tournant prit alors la carrière de ses élèves ? Grâce à l’analyse croisée des objets artistiques et textuels, je m’interrogerai sur l’impact qu’a pu avoir la disparition d’un artiste du calibre de Raphaël dans une Rome en pleine effervescence artistique. [less ▲]

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See detailFORMATİON DU MONDE ENTREPRENEURİAL ET ASSOCİATİF À LA CULTURE DE SPİRULİNE EN HAÏTİ
MAGERMANS, POL ULiege; DENGIS, Chantal; DETIENNE, Xavier et al

Conference (2017, March 29)

One of the solutions to malnutrition in developing countries is nutritional supplements. These, generally issued from food or pharmaceutical industry are too often expensive. A natural solution exists ... [more ▼]

One of the solutions to malnutrition in developing countries is nutritional supplements. These, generally issued from food or pharmaceutical industry are too often expensive. A natural solution exists: Spirulina. A farm school project with the Faculty of Agronomy and Veterinary Medicine (FAMV) of the State University of Haiti (UEH), financed by WBI between 2010 and 2013, has already made it possible to construct a series of basins and to familiarize a university team of this faculty with the culture of Spirulina. The current project (2015-2018) aims to disseminate knowledge of Spirulina culture techniques in the Haitian entrepreneurial and associative world, hoping to see more artisanal farms in the country. [less ▲]

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See detailModélisation de la qualité des eaux de surface à l’échelle d’un bassin versant agricole tunisien dans un contexte de changement climatique
Boukari, Amira; Everbecq, Etienne ULiege; MAGERMANS, POL ULiege et al

Conference (2017, March 29)

La dégradation considérable de la qualité de l’eau et les utilisations concurentielles de cette ressource par tous les secteurs s’accèlèrent, notamment en région méditerranéenne. Certains pays souffrant ... [more ▼]

La dégradation considérable de la qualité de l’eau et les utilisations concurentielles de cette ressource par tous les secteurs s’accèlèrent, notamment en région méditerranéenne. Certains pays souffrant déjà de la rareté de leurs ressources en eau seront de plus en plus menacés dans un futur proche. Cette situation de pénurie serait aggravée par les dérèglements climatiques qui menacent les ressources en eau par l’augmentation de l’évaporation des reservoirs et des plans d’eau et par la fréquence des inondatons et des sécheresses. La Tunisie fait partie des pays les plus vulnérables de la région méditerranéenne. Le pays est classé selon l’indice de Falkenmark parmi les pays en pénurie d’eau, ce qui rend la disponibilité naturelle de cette ressource insuffisante pour satisfaire une demande en hausse. En effet, selon l’organisation des nations unies pour l’alimentation et l’agriculture (FAO, 2014), les disponibilités en eau douce de la Tunisie baisseraient à 450 m3/habitant/an en 2030 et à 427 m3/habitant/an en 2050. En 2015, les apports cumulés aux barrages ont enregistré une baisse de 66% par rapport à la moyenne. Cette baisse a le plus affecté la région du Nord, forte contributrice au stockage d’eau de surface (plus de 80% des ressources en eau de surface). Le barrage Joumine était parmi les barrages les plus affectés par cette baisse enregistrant une perte de stockage de 37 Mm3 en une année, soit 30% de sa capacité utile actuelle. A cette baisse de la ressource s’associe la vulnérabilité à la pollution diffuse. En effet, le bassin versant de l’oued Joumine est un bassin versant agricole dominé par les cultures céréalières très exigeantes en intrants (192 milles tonnes d’Ammonitrate, 25,9 milles tonnes de superphosphate 45 et 82 milles tonnes de DAP pour le total des surfaces céréalières emblavées du pays) (DGPA, 2016). Dans ce travail, on estime ces apports issus des terres agricoles et évalue sa réponse face aux nombreuses pressions dans un contexte de changement climatique. La méthodologie adoptée implique, en plus des observations et prospection terrain, la représentation mathématique de la relation « pression – impact », modélisée par le logiciel PEGOPERA, outil de simulation numérique de l’écosystème rivière développé par l’Unité R&D de l’Aquapôle de l’Université de Liège. Le but étant de fournir une image de la qualité de l’eau de l’oued Joumine dans des conditions hydrologiques particulières, à un pas de temps journalier et en tout point du réseau en assurant des simulations physiquement basées avec un outil dédié au calcul déterministe des écosystèmes rivières à partir des données des débits mesurés, la température de l’eau, les insolations solaires et les rejets (Deliège et al., 2009; Deliege et al 2014 ; Grard et al 2014). La mise en place du modèle a nécessité la construction d’une base de données géographique à partir des informations relatives à l’occupation des terres et le relief, le tracé digitalisé des rivières et le découpage administratif par délégation. Des algorithmes de pré-processing PEGASE ont été appliqués pour la construction et la vérification de la topologie du réseau hydrographique, la génération des profils altimétriques des rivières et de la connectivité. Une méthode d’interfaçage a été par ailleurs définie avec le modèle agro-hydrologique SWAT en vue du calcul déterministe et explicite des apports diffus des sols tout en s’assurant de la cohérence des échelles temporelle et spatiale entre les deux modèles et des processus modélisés. Le modéle a été paramétré pour simuler l’état du systéme depuis l’année hydrologique 2015/2016 et des scénarios prospectifs sont en cours d’étude pour simuler la réponse du système dans des situations particulières, notamment les projections climatiques futures. [less ▲]

Detailed reference viewed: 147 (11 ULiège)
See detailLc-chip versus UHPLC-tandem mass spectrometry for the quantitation of estetrol and estradiol without derivatization after whole blood microsampling
Nys, Gwenaël ULiege; Servais, Anne-Catherine ULiege; Pequeux, Christel ULiege et al

Conference (2017, March 29)

the aim of this work was to conduct a PK study on mice to select the most appropriate administration route for E2 and E4 formulations. To achieve this goal, a reference method for the quantitation of both ... [more ▼]

the aim of this work was to conduct a PK study on mice to select the most appropriate administration route for E2 and E4 formulations. To achieve this goal, a reference method for the quantitation of both estrogens after whole blood microsampling was developed and validated on a UHPLC-MS/MS system. This reference method was later transferred on LC-chip device and both methods were compared in terms of analytical parameters such as response function, accuracy, precision, trueness and limit of quantification. [less ▲]

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See detailLa gestion de l'eau dans les pays en développement ou GIRE: passé, présent et future
Wellens, Joost ULiege

Conference (2017, March 29)

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See detailConstruire les marges de l’action publique: le traitement comptable des PPP en Europe
Piron, Damien ULiege

Conference (2017, March 29)

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See detailResearch in Prison from the inside. An uncomfortable position for the "Official-Researcher"?
Sevenants, Yves ULiege

Conference (2017, March 28)

Presentation about the experience of a native researcher in prison.

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See detailVoice dosimetry in music theory teachers
Schiller, Isabel ULiege; Morsomme, Dominique ULiege; Sfez, Lou et al

Conference (2017, March 28)

BACKGROUND: In Belgium, music theory teachers teach theoretical aspects of rhythm, singing and other music-related skills (such as pitch accuracy or singing in harmony) outside the regular school setting ... [more ▼]

BACKGROUND: In Belgium, music theory teachers teach theoretical aspects of rhythm, singing and other music-related skills (such as pitch accuracy or singing in harmony) outside the regular school setting. To date, their voice use and how it may be affected by background noise have hardly been studied. OBJECTIVES: 1) to determine the relationship between music theory teachers’ vocal loading and background noise and 2) to examine if the daily number of vocal fold vibration cycles (vocal loading index, VLI) is reflected in the teachers’ auto-evaluation of their voice. METHODS: A VoxLog voice dosimeter (Sonvox) was used to monitor 13 music theory teachers for one 6-day workweek from the early morning until late evening. Parameters analysed were fundamental frequency (F0, Hz), voice sound pressure level (SPL, dB), time dose (%), noise SPL (dB), and VLI. At the end of each monitoring day, subjects evaluated their voice quality, vocal fatigue, and amount of speaking and singing voice used by means of a visual analogue scale. RESULTS: Statistical analysis revealed positive correlations between noise SPL and F0, voice SPL and time dose. Correlations were also found between VLI and auto-evaluation data: a rise in VLI accompanied a decrease in self-perceived voice quality, an increase in vocal fatigue and an increase in the perceived amount of singing and speaking voice used. CONCLUSION: Three conclusions were drawn from the results. Firstly, vocal loading measured in music theory teachers is connected to the background noise level. Secondly, a great number of vibration cycles is associated with a self-reported increase in vocal fatigue and a lower general voice quality at the end of the day. Finally, correlations between the number of vibration cycles and the self-reported amount of voice use suggest that visual analogue scales are a reliable method to evaluate daily voice use. [less ▲]

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See detailHistoire et images. Une épistémologie historienne du visuel : le cas d'Arlette Farge
Servais, Amandine ULiege

Conference (2017, March 25)

Dans cet exposé, j'analyse le cas Montjean, inscrit au cœur de la pratique fargienne. Il m’intéresse particulièrement : il est révélateur tant du projet d’Arlette Farge que de sa mise en œuvre. Une ... [more ▼]

Dans cet exposé, j'analyse le cas Montjean, inscrit au cœur de la pratique fargienne. Il m’intéresse particulièrement : il est révélateur tant du projet d’Arlette Farge que de sa mise en œuvre. Une première fois appréhendé au sein d’un ouvrage – La vie fragile (Paris, Hachette, 1986) – qui annonce, en bien des lieux, la poétique de l’historienne, on le retrouve dans une étude récente qui, selon moi, condense – tout en légèreté – les outils de l’atelier fargien. J’estime, en effet, que La révolte de Mme Montjean (Paris, Albin Michel, 2016) est une sorte de manifeste qui, évidemment, ne se donne pas explicitement comme tel. Mais en la parcourant, librement, chapitre par chapitre, je montrerai que les fondamentaux de la pratique d’Arlette Farge – telle que je tente de la formaliser par le biais du paradigme visuel – y sont formulés. [less ▲]

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See detailBelgian heterosexuals’ attitudes towards different types of same-sex parenting
Scali, Thérèse ULiege; D'Amore, Salvatore; Green, Robert-Jay

Conference (2017, March 25)

The legal situation of Belgian gay men and lesbians may be perceived as one of the best in Europe. Indeed, the Belgian Parliament has legalized marriage and parenting for same-sex couples, has enacted ... [more ▼]

The legal situation of Belgian gay men and lesbians may be perceived as one of the best in Europe. Indeed, the Belgian Parliament has legalized marriage and parenting for same-sex couples, has enacted anti-discrimination laws, and has funded several action plans to combat homophobia. More particularly, the access to parenthood is legally possible for same-sex couples through adoption, artificial insemination and in vitro fecundation. In this supportive political context, lots of same-sex-headed families exist. However, same-sex parenting is still considered as a controversial topic by some heterosexual people. Therefore, this paper aims at understanding heterosexuals’ attitudes towards the different types of same-sex parenting as well as the rationales underlying those attitudes. In Study 1, the degrees of support of 1168 heterosexual participants aged from 18 to 81 towards those types of parenting have been analysed through a self-report questionnaire. Results revealed that heterosexuals’ participants do not show the same degree of support towards the different types of same-sex parenting. In particular, adoption by lesbian and gay couples is the more accepted type of parenting, followed by artificial insemination. Then, adoption for single lesbians or gay men and surrogacy are the types of parenting that are the less supported. Then, though the content analysis of comments posted on social networks (Study 2), we highlighted the arguments in favour and against those specific types of parenting. Those results highlight that citizens’ attitudes can go from supportive to unsupportive and this could lead to some kind of discrimination towards children raised in specific forms of same-sex-headed families. This contribution highlights work’s implication for public policy and social transformation by understanding the challenges that gay and lesbian couples and their children have to face. [less ▲]

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See detailAn Affective Account of Distance Estimation Biases
Dumitru, Magdalena ULiege

Conference (2017, March 25)

Dumitru and Joergensen (2016) employed a task designed to probe social attitudes to covertly investigate the magnitude estimation of digit-word expressions (e.g., ‘8 ants’). Here we employed a task ... [more ▼]

Dumitru and Joergensen (2016) employed a task designed to probe social attitudes to covertly investigate the magnitude estimation of digit-word expressions (e.g., ‘8 ants’). Here we employed a task designed to elicit affective states to gain insights into distance underestimation and boundary extension biases. [less ▲]

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See detailN2O dynamics in sea ice, insights from a first time series and isotopic tools
Kotovitch, Marie ULiege; Tison, Jean-Louis; Fripiat, François et al

Conference (2017, March 25)

Nitrous oxide (N2O) is a potent greenhouse gases that has a lifetime of 114 years in the atmosphere and a global warming potential 300 time higher than that of CO2. However there are still large ... [more ▼]

Nitrous oxide (N2O) is a potent greenhouse gases that has a lifetime of 114 years in the atmosphere and a global warming potential 300 time higher than that of CO2. However there are still large uncertainties and gaps in the understanding of the N2O cycle in polar oceans and particularly associated to sea ice. Sources and sinks of N2O are therefore poorly quantified. To date, only one study by Randall et al. 2012 present N2O measurements in sea ice. They pointed out that sea ice formation and melt has the potential to generate sea-air or air-sea fluxes of N2O, respectively. The main processes (except the transport processes) involved in the N2O cycle within the aquatic environment are nitrification and denitrification. Recent observations of significant nitrification in Antarctic sea ice shed a new light on nitrogen cycle within sea ice. It has been suggested that nitrification supplies up to 70% of nitrate assimilated within Antarctic spring sea ice. Corollary, production of N2O, a by-product of nitrification, can potentially be significant. Our recent studies in Antarctic land fast ice in McMurdo Sound, confirmed this suggestion, where N2O release to the atmosphere was estimated to reach 4 µmol.m-2.yr-1. But this assessment is probably an underestimation since it only accounts for dissolved N2O while a significant amount of N2O is likely to occur in the gaseous form like N2, O2 and Ar. We will then address the new tools to measure the bulk concentration of N2O (dissolved and gaseous) in sea ice, and the production of N2O by sympagic microorganisms - what process is dominant and how much N2O is produced - based on the first time series of N2O measurement in sea ice. The determination of the isotopic composition of N2O using cavity enhanced laser absorption spectroscopy technique (Off-axis ICOS) will allow us to determine the origin of these processes. [less ▲]

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See detailDes cloîtrées au coeur des villes: témoignages de femmes et récits de vie dans les espaces urbains de la Dorsale catholique au XVIIe siècle
Henneau, Marie-Elisabeth ULiege

Conference (2017, March 24)

Les décrets de la 25e session du Concile de Trente ont fortement incité les communautés religieuses féminines à privilégier les espaces urbains pour leurs nouvelles fondations et leur ont par ailleurs ... [more ▼]

Les décrets de la 25e session du Concile de Trente ont fortement incité les communautés religieuses féminines à privilégier les espaces urbains pour leurs nouvelles fondations et leur ont par ailleurs intimé l'ordre d'y établir une stricte rupture d'avec le monde. Le défi sera pour ces femmes d'arriver à concilier leur indispensable insertion dans l'espace urbain et son tissu social, les exigences des autorités en matière de clôture et leurs propres aspirations et nécessités quotidiennes . A travers des textes inédits produits dans les couvents féminins établis entre l'Italie du Nord et les Pays-Bas méridionaux, on tentera de comprendre comment ces candidates à la vie contemplative se conçoivent également comme des apôtresses au coeur des villes. Il s'agira notamment d'expliquer comment elles analysent et justifient leur choix de vie, exposent leur conception de la clôture, décrivent leur cadre de vie et couchent sur papier leur ressenti de femmes certes coupées du monde mais voulant agir sans cesse avec et pour lui. [less ▲]

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See detailThe implicit transformation of national administrative authorities in the service of supranational ‘fair trial’ rights
Van Cleynenbreugel, Pieter ULiege

Conference (2017, March 24)

This presentation analyses to what extent the fundamental right to a fair trial has been instrumental in shaping or modifying the structure of national competition and financial market authorities in five ... [more ▼]

This presentation analyses to what extent the fundamental right to a fair trial has been instrumental in shaping or modifying the structure of national competition and financial market authorities in five States (the United Kingdom, France, Germany, the Netherlands and Belgium). Submitting that the ECtHR and the CJEU have succeeded in imposing a limited number of administrative organisation templates on administrative authorities and uncovering the limits of that approach, it will call for a more fundamental reflection on the risks and opportunities associated with inter- and supranational courts establishing, in a bottom-up fashion, administrative organisation templates subsequently imposed on States. [less ▲]

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See detailAmok. De quelques perdants radicaux chez Hans Magnus Enzensberger.
Hamers, Jérémy ULiege; Cormann, Grégory ULiege

Conference (2017, March 23)

En 2006, l’écrivain et essayiste allemand Hans Magnus Enzensberger publie Le perdant radical, un « essai sur les hommes de la terreur », conformément au sous-titre de cet ouvrage d’une soixantaine de ... [more ▼]

En 2006, l’écrivain et essayiste allemand Hans Magnus Enzensberger publie Le perdant radical, un « essai sur les hommes de la terreur », conformément au sous-titre de cet ouvrage d’une soixantaine de pages dans lequel l’auteur décrit les multiples facettes d’un ensemble de figures meurtrières. Du tireur fou dans un lycée américain au combattant islamiste ceinturé d’explosifs, isolé ou organisé en groupe, tout perdant radical répond au même mécanisme : c’est « lorsqu’il aura repris à son compte le jugement des autres, ceux qu’il tient pour les gagnants (…) qu’il pète les plombs. » L’indistinction est frappante : pour Enzensberger, le perdant radical peut sévir seul ou en groupe ; son moteur profond, irréductible à un engagement politique ou religieux, reste le même dans les deux cas. Car pour l’essayiste, rien, pas même une théorie critique de la société, ne permet de rendre compte de la nature du perdant radical, si ce n’est la suppression de l’instinct de conservation. Dans plusieurs textes littéraires – on songe notamment à son poème Zur Frage der Bedürfnisse (1991) et à son entretien autobiographique fictif avec lui-même Erinnerungen an einen Tumult (2014) –, Hans Magnus Enzensberger crée ou recrée des figures de terroristes qui réalisent parfaitement le profil type du perdant radical. Andreas Baader, les jeunes bourgeois d’une secte marxiste en Suède, un terroriste islamiste en fuite, un guérillero sud-américain qui a perdu tout sens de la réalité, autant de figures fictionnelles ou refictionnalisées qui, partant d’une même position d’échec apparemment imposée de l’extérieur et assumée en tant que telle, superposent destruction et autodestruction. L’hypothèse générale à laquelle nous voudrions soumettre ces personnages de terroristes est qu’ils sont les héritiers d’une figure essentielle pour la littérature allemande et anglo-saxonne : l’amok. [less ▲]

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See detailNégocier les discours (in)sécuritaires au quotidien: le cas du #Brusselslockdown
Wintgens, Caroline ULiege

Conference (2017, March 23)

Cette communication a pour objectif d’interroger les discours sécuritaires, leur inscription dans le quotidien et leur réception par les usagers de réseaux sociaux au quotidien, à travers le cas du ... [more ▼]

Cette communication a pour objectif d’interroger les discours sécuritaires, leur inscription dans le quotidien et leur réception par les usagers de réseaux sociaux au quotidien, à travers le cas du #Brusselslockdown. Ce hashtag, apparu sur Twitter le 22 novembre 2015, a pour particularité d’avoir été inondé d’images et vidéos de chats suite à la demande des autorités belges de ne plus diffuser d’informations sur les opérations policières en cours à Bruxelles Ce cas est approché à travers la question des mises en scène (Goffman, 1973) de la sécurité et de la performativité (Butler, 2005) de celles-ci. Les discours sur la sécurité (ceux qui apparaissent dans les médias comme ceux qui apparaissent dans l’espace public) sont performatifs. La sécurité, le danger, la menace n’existent pas en soi, ils sont construits par le discours. L’Etat et ses représentants participent à cette construction, et donc à définir ce qui est sûr et ce qui est menaçant, puisque leur légitimité repose sur la promesse de maintenir la sécurité (Campbell, 1992). D’après Campbell, Il s’agit pour l’Etat d’assurer la sécurité des citoyens face à une menace qu’il contribue à construire, mais aussi de faire savoir qu’il assure cette sécurité. Reste alors aux usagers des médias, de l’espace public, à négocier avec ces mises en scène qui semblent toujours plus présentes dans le quotidien à travers les discours politiques, la presse, les réseaux sociaux ou encore l’espace public urbain. Sur les réseaux sociaux, les usagers sont invités à parler de ce quotidien. Ils participent alors eux aussi à la construction des discours sécuritaires, et donc de la définition de l’(in)sécurité. La particularité de ce qui s’est passé sur Twitter le soir du 22 novembre est que le discours sécuritaire consistait précisément à masquer celui-ci, à le rendre invisible. Mais cette injonction au silence, réappropriée et détournée (De Certeau, 1990) par les usagers de Twitter, lui a donné une visibilité particulière. A travers ce détournement, on assiste au retour du quotidien et du domestique au cœur même d’une situation exceptionnelle relative aux affaires publiques. L’action se déplace dans l’espace privé et le met en scène. Ce brouillage des frontières ne porte cependant pas sur la définition de l’(in)sécurité. Si ces discours participent à construire celle-ci, c’est finalement pour réétablir des représentations qui sont déjà bien ancrées: le domestique est sûr, l’espace public est menaçant. Sous le hashtag #BrusselsLockdown, la représentation du domestique nous protège, celle de ce qui se déroule dans l’espace public nous met en danger. [less ▲]

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See detailThe Belgian election system
Bouhon, Frédéric ULiege

Conference (2017, March 21)

This paper has been presented at a conference organised by the "Tribunal Superior Eleitoral" and the federal parliament in Brasilia. The author was invited to explain the system of semi open list that is ... [more ▼]

This paper has been presented at a conference organised by the "Tribunal Superior Eleitoral" and the federal parliament in Brasilia. The author was invited to explain the system of semi open list that is used for the election of the members of the parliament in Belgium. [less ▲]

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See detailOils and CO2, a promising combination for designing insulating foams and high performance coatings
Detrembleur, Christophe ULiege; Alves, Margot ULiege; Grignard, Bruno ULiege et al

Conference (2017, March 21)

Making plastics more sustainable by valorizing waste CO2 as a cheap, inexhaustible and renewable feedstock is an early stage technology with strong innovation potential that imposes itself as a strategic ... [more ▼]

Making plastics more sustainable by valorizing waste CO2 as a cheap, inexhaustible and renewable feedstock is an early stage technology with strong innovation potential that imposes itself as a strategic driver for developing future low carbon footprint materials and technologies. With a global production estimated to 18 million tons for 2016, polyurethane (PU) is one of the most important polymers in our everyday life applications (automotive, building and construction, coatings, etc.). Industrially, PU is produced by step-growth polymerization between di- or polyisocyanates and di- or polyols. However, isocyanates are toxic and drastic changes in the REACH regulations limiting/banning the use of isocyanates are expected. There is a need today to develop new greener and safer alternatives to produce PU. Valorizing CO2 as C1 feedstock for producing precursors entering in the synthesis of polyurethanes by a non-isocyanate route (NIPU) is a promising strategy to solve this challenge. In this talk, we will focus on the synthesis and characterization of novel NIPUs foams for thermal insulation, and NIPUs coatings for metal protection. Our research highlights benefit of merging bio-resources (such as vegetable oils) with carbon dioxide transformation. In the first part of this talk, we will report on the fast synthesis of bio- and CO2-sourced cyclic carbonates by coupling CO2 with epoxides using a new highly efficient bicomponent homogeneous organocatalyst under solvent-free and mild experimental conditions. The mechanism of the activation of the reaction will be discussed, and scaling up of the technology will be demonstrated (15kg scale). In the second part, we will illustrate the use of these bio- and CO2-sourced cyclic carbonates for the production of microcellular NIPU foams with closed cells morphology for thermal insulating applications, but also for preparing hybrid NIPUs coatings for metal protection. [less ▲]

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See detailComprehensive Ion Mobility Calibration Strategies based on Synthetic Polymers
Haler, Jean ULiege; Kune, Christopher ULiege; Chirot, Fabien et al

Conference (2017, March 21)

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See detailQue sait-on de l'apprentissage chez les enfants dysphasiques ?
Maillart, Christelle ULiege

Conference (2017, March 21)

Dans cet exposé, nous nous intéresserons aux enfants présentant un trouble primaire du langage appelé aussi dysphasie. Nous présenterons leurs principales caractéristiques langagières et non langagières ... [more ▼]

Dans cet exposé, nous nous intéresserons aux enfants présentant un trouble primaire du langage appelé aussi dysphasie. Nous présenterons leurs principales caractéristiques langagières et non langagières et envisagerons les hypothèses théoriques proposées pour rendre compte de leurs troubles. Après avoir rappelé les principaux mécanismes d’apprentissage utilisés pour développer le langage oral, nous passerons en revue des travaux récents qui ont ciblé l’apprentissage des régularités, les modalités de présentation des éléments à apprendre ou encore la façon dont les enfants dysphasiques consolident leurs apprentissages. Enfin, les conséquences cliniques et scolaires de ces découvertes seront développées. [less ▲]

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See detailSynergistic observations of the giant planets with HST and JWST: Jupiter's auroral emissions
Grodent, Denis ULiege

Conference (2017, March 20)

The James Webb Space Telescope is perfectly suited to observe most Solar System objects, including the extended giant planets. Its high sensitivity, high spatial resolution, field of view, very high ... [more ▼]

The James Webb Space Telescope is perfectly suited to observe most Solar System objects, including the extended giant planets. Its high sensitivity, high spatial resolution, field of view, very high spectral resolution and wide spectral coverage all combine to make JWST a fantastic instrument that will result in significant advances and progress in most fields of Solar System exploration. Here, we focus on the case of Jupiter’s aurora for several reasons. 1) The auroral emissions on Jupiter are very intense, both in ultraviolet and in infrared. Each of these bandpasses is bringing complementary information on how Jupiter is interacting with its near and distant environment. 2) Even though Jupiter’s aurora appears to be responding to the conditions prevailing in the solar wind, contrary to the Earth it is a permanent emission that can also be observed on the sunlit side of the planet. 3) The NASA Juno mission is currently exploring the magnetosphere and the atmosphere of this planet with a suite of in situ and remote instruments, including an ultraviolet spectrograph (UVS) and an infrared imaging spectrograph (JIRAM). The Juno mission is gathering a broad scientific community that will foster the study of Jupiter’s system for several years. 4) A large HST program was allocated in support of the NASA Juno prime mission (GO-14634) and is currently providing us with regular movies of Jupiter’s ultraviolet aurora. They provide a global magnetospheric context for the different Juno instruments, as well as for the numerous ground based (infrared) and space based observatories participating to the Juno mission. 5) It is currently very difficult to plan truly simultaneous UV and IR observations, mainly because of the inherent limitations of Earth based infrared telescopes. As a result, comparisons of Jupiter’s auroral emissions rest on a very limited dataset. Nevertheless, they are suggesting similarities and discrepancies between IR and UV aurorae, the study of which would greatly benefit from synergistic observations with HST and JWST. 6) The case of Saturn’s aurora is as important, especially in view of the upcoming ‘Grand Finale’ of the Cassini mission, and all above arguments apply to Saturn as well. The case of Uranus and Neptune’s aurorae still belongs to the area of discovery and will take full advantage of JWST’s advanced capabilities. [less ▲]

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See detailLichtenstein procedure under local anaesthesia
DETRY, Olivier ULiege

Conference (2017, March 18)

LICHTENSTEIN REPAIR UNDER LOCAL ANAESTHESIA Pr Olivier Detry, Dpt of Abdominal Surgery and Transplantation, CHU Liège, Liège, Belgium. Email: oli.detry@chu.ulg.ac.be Despite many studies confirming the ... [more ▼]

LICHTENSTEIN REPAIR UNDER LOCAL ANAESTHESIA Pr Olivier Detry, Dpt of Abdominal Surgery and Transplantation, CHU Liège, Liège, Belgium. Email: oli.detry@chu.ulg.ac.be Despite many studies confirming the feasibility and the interest of local anaesthesia for inguinal hernia repair [1-3], its use is not generalized amongst abdominal surgeons. The advantages of local anaesthesia are indeed clear, including reduced costs, reduced hospital stay and reduced post operative pain. The success of the procedure depends on the skills and the motivation of the surgeon, of the nursing teams, and of the patient him/herself. Perfect knowledge of the surgical technique and of the regional nerve anatomy is required. The Lichtenstein repair may be easily performed under local anaesthesia, but should be proposed in the early experience to non-obese patients suffering from limited inguinal hernia. It can even be performed by surgical residents [4]. Practically, local anaesthesia requires some patience and quiet in the operative room. Operators should be aware that the action of local anaesthesia is delayed after injection. Local anaesthetics should be buffered [5] and at body temperature at time of injection. Local anaesthetics containing Adrenalin allow longer pain control, with limitation of bleeding and less toxicity. Large and brutal movements should be avoided. Transversus abdominis plane (TAP) block can also be proposed [6]. The surgical and anaesthetic techniques for inguinal hernia repair should be tailored to the specific characteristics of the hernia and of the patient. There is no method of choice that might fit for every patient. References [1] van Veen RN, Mahabier C, Dawson I, Hop WC, Kok NF, Lange JF, et al. Spinal or local anesthesia in lichtenstein hernia repair: a randomized controlled trial. Ann Surg 2008;247:428-433. [2] Verstraete L, Becaus N, Swannet H, Ceelen W, Duchateau L, Speybroeck N. Long term outcome after lichtenstein hernia repair using general, locoregional or local anaesthesia. Acta Chir Belg 2015;115:136-141. [3] Dhankhar DS, Sharma N, Mishra T, Kaur N, Singh S, Gupta S. Totally extraperitoneal repair under general anesthesia versus Lichtenstein repair under local anesthesia for unilateral inguinal hernia: a prospective randomized controlled trial. Surg Endosc 2014;28:996-1002. [4] Paajanen H, Varjo R. Ten-year audit of Lichtenstein hernioplasty under local anaesthesia performed by surgical residents. BMC Surg 2010;10:24. [5] Ball EL, Sanjay P, Woodward A. Comparison of buffered and unbuffered local anaesthesia for inguinal hernia repair: a prospective study. Hernia : the journal of hernias and abdominal wall surgery 2006;10:175-178. [6] Milone M, Di Minno MN, Musella M, Maietta P, Salvatore G, Iacovazzo C, et al. Outpatient inguinal hernia repair under local anaesthesia: feasibility and efficacy of ultrasound-guided transversus abdominis plane block. Hernia : the journal of hernias and abdominal wall surgery 2013;17:749-755. [less ▲]

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See detailL’animation à l’épreuve de la danse : Norman McLaren ou la conquête du chorégraphique
Tomasovic, Dick ULiege

Conference (2017, March 17)

Figuremajeure du cinéma d’animation artisanal et expérimental, Norman McLaren, à travers l’apprentissage de multiples techniques d’animation (dessin animé, stop motion, pixillation, pellicule peinte ou ... [more ▼]

Figuremajeure du cinéma d’animation artisanal et expérimental, Norman McLaren, à travers l’apprentissage de multiples techniques d’animation (dessin animé, stop motion, pixillation, pellicule peinte ou grattée, expositions multiples...) n’a cessé d’étudier le mouvement. Si le cinéaste a, d’une part, émis un certain nombre de rapprochements entre la figure de l’animateur et celle du danseur, et, d’autre part, livré une œuvre qui fait date dans l’histoire du film de danse (le célèbre Pas de deux, 1968), c’est à une question moins apparente sur les liens entre danse et cinéma que cette intervention souhaite s’intéresser. En effet, à travers le commentaire d’une série de films conçus entre 1935 et 1972, il s’agira de comprendre de quelle manière la conception même du geste animé chez McLaren s’inscrit, dès ses prémisses, dans une logique d’invention chorégraphique. [less ▲]

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See detailLe couvent de l’Annonciade céleste de la rue Couture Sainte-Catherine : un réseau de parisiennes autour d’un édifice discret (XVIIe-XVIIIe s.)
Henneau, Marie-Elisabeth ULiege; Piront, Julie ULiege

Conference (2017, March 17)

Fondé en 1622 et financé par la marquise de Verneuil, ce couvent de chanoinesses régulières de Saint-Augustin, voisin de l’hôtel du Carnavalet, devient rapidement un salon spirituel aux portes duquel se ... [more ▼]

Fondé en 1622 et financé par la marquise de Verneuil, ce couvent de chanoinesses régulières de Saint-Augustin, voisin de l’hôtel du Carnavalet, devient rapidement un salon spirituel aux portes duquel se pressent l’aristocratie et la bonne société parisienne. Malgré un attachement farouche à la clôture, la fondatrice Marie Agnès Dauvaine entretient des relations suivies avec les dames de la Cour et les plus grandes figures de la Réforme catholique installées ou de passage à Paris. Sa biographie, la chronique du couvent et d’autres riches fonds d’archives permettent de reconstituer le réseau de Parisiennes gravitant autour de cette communauté et de mesurer son degré d’implication dans la vie religieuse, politique ou culturelle de la capitale, tout au long du XVIIe siècle, notamment à l’occasion de la profession de la maréchale de Ranzau ou pendant la captivité de la mère Angélique de Saint-Jean Arnauld d’Andilly. Après l’examen de ce réseau féminin et de ses interactions avec d’autres lieux de sociabilité parisiens, on analysera les différents bâtiments, aujourd’hui disparus, mais documentés par des sources écrites et iconographiques restées jusqu’à présent inédites. [less ▲]

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See detailLes produits "sans", pas sains ? Quelle composition modifiée ?
Sindic, Marianne ULiege

Conference (2017, March 17)

Sans lait, sans sucre, sans gluten. De plus en plus de personnes choisissent d'écarter un aliment de leur alimentation. Face à cette demande, la distribution présente un large choix d’aliments modifiés ... [more ▼]

Sans lait, sans sucre, sans gluten. De plus en plus de personnes choisissent d'écarter un aliment de leur alimentation. Face à cette demande, la distribution présente un large choix d’aliments modifiés pour répondre aux courants à la mode « sans ». Mais hors cas avéré d'intolérance, ces évictions ont elles un intérêt médical ? Longtemps réservés à une population particulière, les produits sans gluten connaissent depuis quelques années un très large développement. Parmi les lancements de produits référencés dans la base de données Mintel GNPD, le pourcentage de produits revendiquant l’absence de gluten était inférieur à 1% en 2000 pour passer à 5% en 2010 et dépasser les 10% en 2015 (Chéné et al, 2015). Difficile de dire s’il s’agit d’un phénomène de mode lié à des «recommandations » par des personnes célèbres du cinéma ou du sport qui vantent les mérites d’un régime sans gluten sur leur bien-être. Mais qu’en est-il de la qualité de ces produits ? Dans une étude récente, Wu et al ont comparé la composition de plus de 3000 produits avec ou sans gluten répartis en 10 catégories. La qualité globale des produits sans gluten est nutritionnellement plus faible avec des niveaux plus élevés en sucres, graisses saturées et sel. En effet, remplacer le gluten dont les propriétés techno fonctionnelles et sensorielles sont importantes n’est pas aisé. Les sources les plus utilisées pour remplacer le blé sont le riz et le maïs mais d’autres sources plus originales sont parfois utilisées comme le lin, l’amaranthe ou le chia en complétant avec des additifs texturants (dérivés de cellulose, guar, xanthane,…). L’ajout de sucre ou graisses vient renforcer l’appréciation sensorielle. Dans une revue publiée en 2016 par Vici et al, on notera également un plus faible taux de fibres, vitamines et minéraux en particulier les folates, vitamines B12, D, calcium, fer, zinc et manganèse dans une alimentation « gluten-free ». Face à ce constat, il convient de s’interroger sur ces régimes « NO GLU » alors que des médecins annoncent que 90% des gens qui font un régime sans gluten le font sans raison valable. De même, le boycott pur et simple de l’huile de palme tel qu’il est encouragé par certains groupes activistes ne peut pas constituer une réponse adéquate au problème. En effet, si l’huile de palme doit être supprimée des produits, elle pourrait être remplacée par une autre matière grasse comme par exemple l’huile de palmiste (huile extraite du noyau du fruit du palmier à huile) ou de coprah (huile extraite de la pulpe de noix de coco) qui présentent un contenu encore plus important en acides gras saturés (surtout l’acide laurique et l’acide myristique). Technologiquement, les possibilités de substitution sont actuellement peu nombreuses, et présentent toutes des inconvénients majeurs, qu’ils soient nutritionnels ou environnementaux. C’est au travers de ces quelques exemples que la formulation d’aliments « sans » sera discutée en évoquant les risques potentiels pour la santé. [less ▲]

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See detailApprentissage et mémoire chez l'enfant et l'adulte trisomique 21
Comblain, Annick ULiege

Conference (2017, March 17)

Si le profil langagier des personnes trisomiques 21 est de mieux en mieux connu et décrit, certains aspects du développement et du fonctionnement cognitif des personnes atteintes demeurent encore peu ... [more ▼]

Si le profil langagier des personnes trisomiques 21 est de mieux en mieux connu et décrit, certains aspects du développement et du fonctionnement cognitif des personnes atteintes demeurent encore peu étudiés. Ainsi, les conséquences de la présence d’un chromosome surnuméraire dans leur patrimoine génétique, sur des domaines tels que le développement mnésique, les apprentissages académiques (lecture et arithmétique) ou la problématique du vieillissement cognitif restent peu étudiés et encore sujets à controverse. Même si depuis plusieurs décennies, on sait que la mémoire à court terme verbale des personnes trisomiques 21 est déficitaire, son fonctionnement exact et les conséquences de ce déficit sur le développement d’autres domaines comme le langage oral et la lecture restent relativement peu explorés en regard des nombreuses études descriptives sur les déficits observés dans la maîtrise langage oral. A l'heure ou l'inclusion des personnes atteintes d'une déficience intellectuelle devient une pratique de plus en plus courante et recommandée, il semble essentiel d'approfondir notre connaissance du développement cognitif de ces personnes de manière à mettre en place des moyens adaptés au sein des classes et de potentialiser apprentissages. Par ailleurs, la problématique du vieillissement et plus particulièrement de l’incidence de la maladie d’Alzheimer est devenue, de par l’espérance de vie accrue des personnes trisomiques 21, un sujet de recherche de plus en plus développé. [less ▲]

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See detailMulti-instrument overview of the 1-hour pulsations in Saturn's magnetosphere
Palmaerts, Benjamin ULiege; Roussos, Elias; Radioti, Aikaterini ULiege et al

Conference (2017, March 16)

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See detailintravenous administration of mesenchymal stream cells modulates renal lipid metabolism in rats
ERPICUM, Pauline ULiege; Rowart, Pascal ULiege; POMA, Laurence ULiege et al

Conference (2017, March 16)

Mesenchymal stromal cells (MSC) have been shown to attenuate renal ischemia/reperfusion (I/R) injury in rodents. Still, the mechanisms of such a nephroprotection remain unclear. Here, rats were ... [more ▼]

Mesenchymal stromal cells (MSC) have been shown to attenuate renal ischemia/reperfusion (I/R) injury in rodents. Still, the mechanisms of such a nephroprotection remain unclear. Here, rats were intravenously infused with MSC (1.5x10^6 cells in 1 ml saline; MSCD-7 group, n=6) or equivalent volume of saline (SD-7 group, n=6) 7 days before kidney sampling. High-throughput RNA sequencing technology was used to compare transcriptomic renal profiles, using TopHat and Cufflinks open-source software tools. A total of 494 and 256 genes were found to be significantly (q-value <.05) down- and up-regulated in mscd-7 versus sd-7 groups, respectively. Hierarchical cluster analysis by “david” “webgestalt” softwares highlighted that the metabolic pathways mostly affected msc included adipogenesis, insulin signalling, fatty acid (fa) biosynthesis, il-6 b-cell receptor il-3 pathway nuclear receptors involved lipid me- tabolism. Real-time qpcr immunoblotting analyses confirmed pivotal enzymes of fa biosynthesis were significantly downregulated group, whereas expression ppar alpha, a transcription factor oxidation, was induced msc. Additional- ly, fat />CD36 – a key regulator of membrane uptake of FA – was increased in MSCD-7 kidneys, with a preferential localization in proximal tubules (PT). As a whole, our data suggest that MSC infusion causes critical modifications of lipid metabolism, including (i) down-regulation of FA biosynthesis; (ii) activation of PPAR alpha pathway, and (iii) prioritization of FA as sources of energy in PT cells, which may eventually prevent lipid peroxidation and attenuate renal I/R damage. [less ▲]

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See detailPrésentation du projet de thèse : Performance des entreprises et ressources territoriales multi-échelles en Belgique et Wallonie
Wilmotte, Pierre-François ULiege

Conference (2017, March 16)

Présentation du projet doctoral dans le cadre du séminaire des doctorants de l'ASRDLF. L'objectif est de présenter le projet mais aussi de mettre en avant les difficultés éventuelles pour recueillir des ... [more ▼]

Présentation du projet doctoral dans le cadre du séminaire des doctorants de l'ASRDLF. L'objectif est de présenter le projet mais aussi de mettre en avant les difficultés éventuelles pour recueillir des conseils et suggestions de doctorants ou d'enseignants-chercheurs. Le projet a été présenté avec les éléments suivants : contexte, questions de recherche, méthodologie, premiers résultats et éléments attendus. [less ▲]

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See detailPositioning in multi-GNSS mode
Deprez, Cécile ULiege; Warnant, René ULiege

Conference (2017, March 16)

Satellite positioning is facing new challenges with the appearance of mass-market receivers and smartphones. Mainly, the reliability of the car navigation systems, the accuracy of positioning in ... [more ▼]

Satellite positioning is facing new challenges with the appearance of mass-market receivers and smartphones. Mainly, the reliability of the car navigation systems, the accuracy of positioning in smartphone—based applications and the availability of positions in urban canyon or deep forests suffer from the hardware limitations of these low-cost receivers. Would the multi-GNSS positioning be the solution to handle those challenges? Indeed, the number of satellites available has dramatically increased, given the expansion of two new global satellite constellations (Galileo (EU) and BeiDou (C)), and might meet these positioning challenges, at least to some extent. [less ▲]

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See detailDevelopment of a prototype of errors prediction in a geodetic network
Nys, Gilles-Antoine ULiege

Conference (2017, March 16)

Presentation made by Gilles-Antoine Nys, University of Liège at the Geospatial Awards.

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See detailCancer in the organ donor
DETRY, Olivier ULiege

Conference (2017, March 16)

Organ Donation and Cancer Pr Olivier Detry, Dpt of Abdominal Surgery and Transplantation, University of Liege The risk of transmission of cancer with the transplanted organ has been known since the ... [more ▼]

Organ Donation and Cancer Pr Olivier Detry, Dpt of Abdominal Surgery and Transplantation, University of Liege The risk of transmission of cancer with the transplanted organ has been known since the pioneering years of solid organ transplantation, and is enhanced by immunosuppression and particularly the calcineurin inhibitors. Therefore, classically, potential organ donors with past history of cancer are excluded from donation, with the exception of low-grade malignant tumours of the central nervous system, the skin and the cervix uteri. Despite that policy, every year, some cases of cancer transmission with organ transplantation were regularly reported in transplant medical journals. At the other hand, there is a clear graft shortage, with long organ transplant waiting lists and inacceptable mortality while waiting for a life saving graft. One mean to increase the number of available grafts could be to accept donation from donors with past history of cancer. Several uncertainties remain: what is the risk of cancer transmission with organ transplantation? This risk depends of course of many donor factors, as the staging and the nature of the donor malignant tumour, the oncological management, the delay between the remission and the organ procurement. This risk may also vary according to the type of organ transplanted, as livers and lungs are more prone to bear occult metastases, compared to the hearts for example. In fact, this risk is unknown, and was clearly overestimated by the old registries as the IPTR, and by the various case reports. All modern prospective registries, as from UNOS or from UK transplant, now report a very low rate of cancer transmission when the donor cancer was known and evaluated before organ donation. Undiagnosed or occult cancer transmission with transplantation is clearly another issue that should not be mistaken with the donors with past history of cancer. In most of the recent reported cases of cancer transmission with transplantation, the donor cancer was not diagnosed before and during organ donation. And this risk increases in modern organ transplantation, as we are now accepting older and older donors, particularly in transplantation of the liver, an organ particularly at risk of metastases. Therefore surgical donor exploration is an important step of organ procurement. Body CT could be a tool to diagnose some, but not all, of these tumours. To my view, the risk of cancer transmission with transplantation has to be balanced with the risk of dying on the waiting lists. Donors with active or recent aggressive cancers have to be excluded from donation. Some types of aggressive cancers, as lymphoma or melanoma, are at high risk. In donors with past history of cancer with some years of remission, organ donation should be considered for recipients at high risk of death without a rapid transplantation. Particularly, heart transplantation, an organ with a low risk of cancer transmission but with a severe organ shortage, could benefit from such a policy. [less ▲]

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See detailAdministration of Third-Party Mesenchymal Stromal Cells at the Time of Kidney Transplantation: Interim Safety Analysis at One-Year Follow-Up
WEEKERS, Laurent ULiege; ERPICUM, Pauline ULiege; DETRY, Olivier ULiege et al

Conference (2017, March 16)

Mesenchymal stromal cells (MSC)-based therapy has been proposed in kidney transplantation (KTx). We report on the 1-year follow-up of an open-label phase I trial using MSC in KTx. On postoperative day 3 ... [more ▼]

Mesenchymal stromal cells (MSC)-based therapy has been proposed in kidney transplantation (KTx). We report on the 1-year follow-up of an open-label phase I trial using MSC in KTx. On postoperative day 3, third-party MSC (~2.0x106/kg) were administered to 7 non-immunized first-transplant recip- ients from deceased donors, under standard immunosuppression (Basiliximab, Tacrolimus, MMF and steroids). No HLA matching was required for MSC donors. Seven comparable KTx recipients were included as controls. Informed consent was obtained. No side-effect was noted at the time of MSC injection. Still, 1 patient with a history of ischemic heart disease had a NSTEMI ~3h after MSC infusion. Ten months after KTx, 1 MSC patient had type B aortic dissection and STEMI. Four MSC patients had at least 1 opportunistic infection, whereas 3 controls had polyoma-BK viremia. At day 14, eGFR in MSC and control groups was 47.1 ± 6.8 and 39.7 ± 5.9 ml/min, respectively (p, 0.05). At 1 year, eGFR in MSC and control groups was 46.5 ± 18.6 and 54.2 ± 16.3 ml/min, respectively (p, 0.42). Per-cause biopsies evidenced 1 bor- derline and 1 acute rejections in MSC group, whereas no AR was biopsy-proven in controls. Three patients developed anti-HLA antibodies against MSC (n=1) or shared kidney/MSC (n=2) mismatches.MSC infusion was safe in all patients except one. Incidence of opportunist infections was similar in both groups. No difference in eGFR was found at 1-year post KTx. Putative immunization against MSC was observed in 3 patients. [less ▲]

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See detailImages à entendre. Le vocabulaire sonore des fêtes de 1622 dans les anciens Pays Bas
De Marco, Rosa ULiege; Heering, Caroline

Conference (2017, March 16)

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See detailDeformations of soap bubbles in a uniform electric field
Mawet, Sébastien ULiege; Caps, Hervé ULiege; Dorbolo, Stéphane ULiege

Conference (2017, March 15)

The study of the deformations undergone by a soap bubble submitted to an electrical force began with Taylor and Wilson 1 and the observation of the so-called Taylor’s cones. Beyond this particular ... [more ▼]

The study of the deformations undergone by a soap bubble submitted to an electrical force began with Taylor and Wilson 1 and the observation of the so-called Taylor’s cones. Beyond this particular structure, few studies analyzed the bubble deformations. For example, what is the link between the deformations and the electrical force ? Or, how do charges move in the thin soap film formed by the bubble ? To answer those questions, we characterize the shape variations of the surface of the bubble immersed in the uniform electric field of a plan capacitor. In particular, our study focuses on hemispherical bubbles lying on the bottom electrode of a plane capacitor. This study allows us to observe some interesting phenomena like the appearance of a hysteresis cycle in the deformation amplitude. [less ▲]

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Peer Reviewed
See detailCabinet de curiosités contemporains : de l'oeuvre au musée
Bawin, Julie ULiege

Conference (2017, March 15)

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See detailImprinting superconducting vortex footsteps in a magnetic layer
Brisbois, Jérémy ULiege

Conference (2017, March 14)

We experimentally show that the principle of local polarization of a magnetic layer, a well-known method to store information, namely in hard drives and credit cards, can be applied for imprinting into a ... [more ▼]

We experimentally show that the principle of local polarization of a magnetic layer, a well-known method to store information, namely in hard drives and credit cards, can be applied for imprinting into a soft magnetic layer of permalloy (Py) the trajectory of vortices moving in a superconducting film (Nb). In full analogy with a magnetic drawing board, vortices act as tiny magnetic scribers leaving a wake of polarized magnetic media in the Py layer. We have used the magneto-optical imaging technique to investigate the mutual interaction between superconducting vortices and ferromagnetic domains. In general, we observe that the flux propagation is delayed at the border of the magnetic layer. Interestingly, in thin Py layers without stripe domains, vortices leave clear imprints of locally polarized magnetic moments along their trajectories. Furthermore, the printings were found to be stable and could still be observed at room temperature, allowing for ex situ observation of the flux penetration in superconductors. We expect our findings to pave the way for further studies for optimizing magnetic recording of superconducting vortex trajectories. [less ▲]

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See detailEvaluation de la fonction rénale
DELANAYE, Pierre ULiege

Conference (2017, March 14)

Detailed reference viewed: 26 (4 ULiège)
See detailFormation and characterization of artificial lipid bilayers on optical fibers
Toussaint, Pauline ULiege; Dreesen, Laurent ULiege

Conference (2017, March 14)

Transports across cellular membranes are at the basis of a lot of biological processes such as the transmission of information in neurons. Their characterization is therefore of crucial interest. As they ... [more ▼]

Transports across cellular membranes are at the basis of a lot of biological processes such as the transmission of information in neurons. Their characterization is therefore of crucial interest. As they are equivalent to biological membranes, artificial lipid bilayers can be created to study membranes and transmembrane proteins properties or transmembrane transports. The aim of this work is to develop a new method for the fabrication of artificial membranes based on the use of optical fibers as support for the bilayer, and for their characterization by fluorescence measurements. We use microfluidics on fibers to create two phospholipid monolayers that we approach close enough to form a bilayer. The membrane formation is checked using fluorescein or a fluorescent sodium probe, Tetra (tetramethylammonium) salt (sodium green), whose optical signal depends on sodium concentration. [less ▲]

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See detailRealization of the Najafi-Golestanian microswimmer
Hubert, Maxime ULiege; Grosjean, Galien ULiege; Lagubeau, Guillaume et al

Conference (2017, March 14)

The development of artificial microswimmers, microscopic robots that swim in a fluid like sperm cells and motile bacteria, could cause a leap forward in various fields such as microfluidics, microsystems ... [more ▼]

The development of artificial microswimmers, microscopic robots that swim in a fluid like sperm cells and motile bacteria, could cause a leap forward in various fields such as microfluidics, microsystems, or minimally invasive medicine. Nature provides plenty of examples of efficient microswimmers. However, a bottom-up approach, looking at the simplest ingredients needed to generate a microswimmer, can lead to a deeper under- standing of the swimming problem. First described by Najafi and Golestanian 1 , a paradigmatic microswimmer is the three-linked-spheres model, which follows a minimalist approach for propulsion by shape shifting. In this presentation, we describe the experimental realisation of this microswimmer using self-assembled ferromagnetic particle at an air-water interface, powered by an uniform oscillating magnetic field 2 . A model, using two har- monic oscillators, reproduces the experimental findings. Because the model remains general, the same approach could be used to design a variety of efficient microswimmers. [less ▲]

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See detailA class of valid inequalities for multilinear 0-1 optimization problems
Rodriguez Heck, Elisabeth ULiege; Crama, Yves ULiege

Conference (2017, March 13)

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See detailConsciousness: Exploring brain activity in coma and other states of consciousness
Cassol, Helena ULiege

Conference (2017, March 11)

Detailed reference viewed: 10 (3 ULiège)
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See detailAgriculture de Précision, Modèle de culture et Phytotechnie
Dumont, Benjamin ULiege

Conference (2017, March 10)

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See detailMUNIX vs TASPM
WANG, François-Charles ULiege

Conference (2017, March 10)

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See detailDéveloppements scientifiques et nouvelles technologies pour l'application de produits phytosanitaires de précision
Lebeau, Frédéric ULiege

Conference (2017, March 10)

Depuis leur introduction, les produits phytosanitaires ont largement démontré leur efficacité pour assurer des rendements agricoles élevés. Toutefois, les nuisances sanitaires et environnementales sont ... [more ▼]

Depuis leur introduction, les produits phytosanitaires ont largement démontré leur efficacité pour assurer des rendements agricoles élevés. Toutefois, les nuisances sanitaires et environnementales sont rapidement apparues ainsi que le développement de diverses résistances. Les développements scientifiques récents, qui permettent une meilleure compréhension du processus d’application tant pour les chercheurs que les agriculteurs, ouvrent la porte à de nombreux développements technologiques. Une présentation des principales bases physiques du processus permet d’éclaircir les diverses options technologiques à la disposition des agriculteurs pour améliorer leurs pratiques en traitement des cultures. En particulier, l’attention est portée sur la trajectoire des gouttes entre la buse et sa cible ainsi que la rétention du produit par les plantes. Ces considérations se traduisent par diverses options technologiques au niveau des agro-équipements et produits de traitement qui doivent être prises en considération pour effectuer les investissements les plus pertinents et choisir les meilleures options lors du traitement. [less ▲]

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See detailLes exemples lexicographiques et leur traduction : quel(s) rôle(s) dans la pratique du traducteur ?
Belleflamme, Clémence ULiege

Conference (2017, March 10)

L'exemple lexicographique remplit toute une série de fonctions, tant sémantiques ou stylistiques que grammaticales (syntaxiques et morphologiques). Selon Michael Toope, dans un dictionnaire bilingue, les ... [more ▼]

L'exemple lexicographique remplit toute une série de fonctions, tant sémantiques ou stylistiques que grammaticales (syntaxiques et morphologiques). Selon Michael Toope, dans un dictionnaire bilingue, les exemples ont, en outre, des fonctions de traduction. Ils devraient, notamment, suggérer à l'utilisateur des procédures de traduction indirecte, l'incitant dès lors à ne pas opter systématiquement pour une traduction isomorphe, mais à privilégier une solution plus conforme à l'usage. Par ailleurs, Xavier Blanco et Philippe Humblé s'accordent sur le fait que les exemples lexicographiques et leur traduction devraient mettre en évidence les différences existant entre deux systèmes linguistiques. Dans notre travail de fin d'études en traduction, nous avons cherché à identifier les questions de linguistique contrastive illustrées par les exemples lexicographiques et leur traduction, ainsi qu'à déterminer quelles solutions les dictionnaires apportaient à l'utilisateur effectuant une tâche de traduction vers sa langue maternelle. Cette analyse reposait sur l'observation des divergences, ces «différences de structures syntaxiques de surface », que présentaient l'exemple et sa traduction. À l'occasion de notre communication, nous avons livré à l'assemblée les résultats de notre analyse et nous nous sommes penchée sur une série d'exemples significatifs, issus de trois dictionnaires bilingues généraux allemand-français, afin de montrer en quoi les exemples lexicographiques peuvent aider le traducteur (ou l'étudiant en traduction) à résoudre certains problèmes liés à des obstacles d'ordre syntaxique. [less ▲]

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See detailUne illustration de multidisciplinarité:"La concertation multidisciplinaire"
Buret, Laetitia ULiege

Conference (2017, March 09)

Detailed reference viewed: 27 (2 ULiège)
See detailSensations of the Shallow Body: Surgery, Dissections, and Technologies of Touch in Renaissance Italy
Von Hoffmann, Viktoria ULiege

Conference (2017, March 09)

My contribution is part of a new work in progress exploring the sense of touch in Italian Renaissance anatomy. Through regular experiences of surgery and dissections, anatomists/surgeons refined their ... [more ▼]

My contribution is part of a new work in progress exploring the sense of touch in Italian Renaissance anatomy. Through regular experiences of surgery and dissections, anatomists/surgeons refined their sense of touch and developed a particularly acute ability to feel and act upon bodily parts and substances. By looking at the dissecting body—the hand, fingers, and skin of anatomists/surgeons—this paper will examine the body dissected—especially its bones, muscles, and surfaces—highlighting the multiple layers of the sense of touch in the Renaissance. [less ▲]

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Peer Reviewed
See detailRéenchanter la ville : le cas de Liège Souffle Vert
Brahy, Rachel ULiege

Conference (2017, March 08)

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Peer Reviewed
See detailThe EU right to be forgotten in a privacy-sensitive human-robot interaction context
Van Cleynenbreugel, Pieter ULiege

Conference (2017, March 06)

One of the most problematic issues currently sweeping data protection debates concerns the right to erasure of one’s personal data. Also known as the right to be forgotten, its recognition has potentially ... [more ▼]

One of the most problematic issues currently sweeping data protection debates concerns the right to erasure of one’s personal data. Also known as the right to be forgotten, its recognition has potentially significant implications for human-robot interactions. Starting from the European Union’s increasing focus on recognising and framing this right, this position paper maps the relevance of linking right to be forgotten and privacy-sensitive HRI-fields, identifying relevant research questions along the way. [less ▲]

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See detailIncreased sea ice cover disrupts food web structure in coastal Antarctica
Michel, Loïc ULiege; Dubois, Philippe; Eleaume, Marc et al

Conference (2017, March 03)

Antarctica currently undergoes strong and contrasted impacts linked with climate change. While the West Antarctic Peninsula is one of the most rapidly warming regions in the world, resulting in sea ice ... [more ▼]

Antarctica currently undergoes strong and contrasted impacts linked with climate change. While the West Antarctic Peninsula is one of the most rapidly warming regions in the world, resulting in sea ice cover decrease, the sea ice cover of East Antarctica unexpectedly tends to increase, possibly in relation with changes in atmospheric circulation. Sea ice is a major environmental driver in Antarctica, and changes in sea ice cover are likely to influence benthic food web structure through several processes (modifications of benthic-pelagic coupling, disruption of benthic production and/or modifications of benthic community structure and therefore resource availability for benthic consumers). To date, regions where sea ice cover is decreasing have received more attention than regions where it is increasing. Here, on the other hand, we studied shallow (0-20 m) benthic food web structure on the coasts of Petrels Island (Adélie Land, East Antarctica) during an event of unusually high spatial and temporal (two successive austral summers without seasonal break-up) sea ice cover. Using time-tested integrative trophic markers (stable isotope ratios of carbon, nitrogen and sulfur) and state-of-the-art data analysis tools (bayesian ecological models), we studied the structure of the food web associated to benthic macroinvertebrates communities. In total, 28 macroinvertebrate taxa spanning most present animal groups (sponges, sea anemones, nemerteans, nematods, sipunculids, sessile and mobile polychaetes, gastropods, bivalves, pycnogonids, crustaceans, sea stars, sea urchins, brittle stars and sea cucumbers) and functional guilds (grazers, deposit feeders, filter feeders, predators, scavengers) were investigated. Our results indicate that the absence of seasonal sea ice breakup deeply influences coastal benthic food webs in Antarctica. We recorded marked differences from literature data, both in terms of horizontal (i.e. primary producers and resources supporting animal populations) and vertical (i.e. trophic level of the studied consumers) structure of the food web. Overall, sympagic (sea-ice associated) algae dominated the diet of many important consumers, and the trophic levels of invertebrates were low, suggesting omnivore consumers relied less on predation and/or scavenging than in normal environmental conditions. Surprisingly, few animals seemed to feed on the extremely abundant benthic biofilm, whose exceptional development was also presumably linked with the peculiar sea ice conditions. Interpretation of data was complicated by the peculiar ecophysiological features of Antarctic invertebrates, whose very low metabolic rates could be associated to low tissue turnover. However, comparison of data obtained in the austral summers of 2013-2014 (first year without seasonal breakup) and 2014-2015 (second year without seasonal breakup) clearly showed that the observed trends were linked with actual temporal changes in invertebrate feeding habits rather than with other potential ecological drivers. Our results provide insights about how Antarctic benthic consumers, which have evolved in an extremely stable environment, might adapt their feeding habits in response to sudden man-driven changes in environmental conditions and trophic resource availability. They also show that local and/or global trends of sea ice increase in Antarctica could cause strong changes in food web structure and therefore impact zoobenthic communities. This reinforces the view that, no matter their overall direction (i.e. increase or decrease), fluctuations in sea ice cover are likely to influence Antarctic benthic ecosystems' structure and functioning. [less ▲]

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See detailMercury stable isotopes discriminate different populations of common Seabass around Europe and provide insight on mercury cycle
Cransveld, Alice ULiege; Das, Krishna ULiege

Conference (2017, March 03)

In a context where worldwide emission of mercury, a global pollutant, are increasing, research for new tools and data enabling a deeper understanding of mercury fluxes and sources are crucial. Over the ... [more ▼]

In a context where worldwide emission of mercury, a global pollutant, are increasing, research for new tools and data enabling a deeper understanding of mercury fluxes and sources are crucial. Over the past few years, the analysis of stable isotopes of mercury has emerged as a new promising technique affording to explore the Hg cycle, somewhat like what is being done for the carbon and nitrogen cycles. Hg can exhibit both mass-dependent (MDF, δ202Hg) and mass-independent fractionation (MIF, Δ199Hg). While MDF may occur during biological cycling inter alia and could be used to understand bioaccumulation processes, MIF provides a unique fingerprint of specific chemical pathways, such as photochemical transformations. In this context, information provided by Hg isotopes would help to improve environmental management strategies. However, so far, few studies considered Hg isotopes in marine vertebrates. Our study reports the first data on Hg isotopic composition in marine European fish, for seven distinct populations of the common seabass, Dicentrarchus labrax. The combination of δ202Hg and Δ199Hg values enabled us to successfully discriminate several populations and recursive partitioning analyses demonstrated their relevance as discriminating tools. Moreover, mercury isotopic values provided insight on Hg contamination sources for biota and on MeHg cycling. We showed that δ202Hg in seabass muscle is probably a good integration of the δ202Hg of MeHg in their diet, except when concentrations are low, in which case in vivo processes would significantly influence the δ202Hg in fish muscle. The δ202Hg was also linked with known Hg point sources in several sites and the overall range of δ202Hg around Europe was suggested to be related to global atmospheric contamination. Δ199Hg in seabass was shown to reflect the level of contamination of fish and their habitat but not only. MIF was also clearly influenced by ecological characteristics of fish and their habitats, and therefore could be used to identify and investigate peculiar Hg environments such as in the Black Sea. Throughout this study, results from the Black Sea population stood out, underlying the particularities of Black Sea Hg which seemed to display a Hg cycling similar to what is observed in fresh water lakes. Data on Hg sources and levels in Europe are scarce and Hg cycling is still poorly understood. Our findings constitute the first large scale isotopic analyses of Hg in the area. They bring out the possibility to use mercury isotopes in order to discriminate distinct populations, to explore the global Hg cycle on a large scale (Europe) and to identify particularities in the Hg cycle of several sites. The interest of using mercury isotopes to investigate the whole European Hg cycle is clearly highlighted by our results. [less ▲]

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See detailMusical(ized) Biographies: Jackie Kay’s Trumpet and Caryl Phillips’s Dancing in the Dark
Mascoli, Giulia ULiege

Conference (2017, March 03)

My paper deals with two musical(ized) biographies: Jackie Kay’s Trumpet (1998) and Caryl Phillips’s Dancing in the Dark (2005). These literary works share features, at once thematic, since the protagonist ... [more ▼]

My paper deals with two musical(ized) biographies: Jackie Kay’s Trumpet (1998) and Caryl Phillips’s Dancing in the Dark (2005). These literary works share features, at once thematic, since the protagonist is a musical performer, and formal, as both writers’ prose is drenched with musicality. The two narratives can thus be considered what Emily Petermann (2014) calls “musical novels”, as both display sonic and structural patterns as well as elements of improvisation (the imitation of orality; the use of different narrators and the inclusion of various types of texts such as lyrics, interviews, excerpts from newspapers, and the solo performances through improvised jazzy breaks and the repetition of the same lexical item). In my paper, I will take my cue from Eric Prieto, who writes that interart analogies should not be taken as ends in themselves, and I will try to show the purpose of such intermediality and how it can contribute to the biographical genre. Among other things, I will examine whether these musicalized biographies have, through their unusual forms, particular social and political relevance and how approaching them from this methodological angle can serve as interpretative aid. [less ▲]

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See detailA meta-analysis of isotopic compositions of North Sea marine mammals
Damseaux, France ULiege; Lepoint, Gilles ULiege; Das, Krishna ULiege

Conference (2017, March 03)

For over a decade, the North Sea has been undergoing significant changes due to global changes and overfishing. We conducted meta-analyses of previously published data on marine mammals sampled in the ... [more ▼]

For over a decade, the North Sea has been undergoing significant changes due to global changes and overfishing. We conducted meta-analyses of previously published data on marine mammals sampled in the North Sea to test the competition for food sources and spatial variations. The overall objective of this study was to assess the potential trophic changes of the grey seal, the harbour seal and the harbour porpoise. Data included δ13C and δ15N values measured in blood cells and muscles from the three species. SIBER, a trophic niche overlap quantification approach, highlighted potential competition between marine mammal species. The ellipse drawn for harbour seal data showed the highest δ15N values, reflecting its trophic position at the top of the food web. But the ellipse overlapping between the harbour seal and the grey seal of Germany was very important, showing a potential strong competition for food sources may be due to the overfishing. The harbour porpoise displayed a lower trophic position and a wide range of δ13C and δ15N values compared to harbour seal and grey seal as seen from its extended ellipse size. This may be due to a more opportunistic behaviour following the decline of some fish population in the North Sea. Surprisingly a group of grey seals sampled in Scotland present a very small ellipse size, presumably more selective in their prey choice, and showed the lowest δ15N values. Caution should be taken before comparing the trophic position of the groups of grey seals as the baseline differed between the two sampling areas. Low nitrates concentrations, higher latitudes, colder temperatures, deeper waters and rocky soils of the Scotland’s coasts of the North Sea cause a stratification phenomenon of the water column explaining the lower δ15N baseline in this area and so the spatial variation between these two groups of grey seals living in the North Sea. [less ▲]

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See detailSemper Incertus: Authorization through Uncertainty in Hanif Kureishi’s My Ear at His Heart: Reading my Father
Munos, Delphine ULiege

Conference (2017, March 02)

In Postcolonial Writers in the Global Literary Marketplace (2007), Sarah Brouillette discusses “the centrality of questions of biography in reception of postcolonial texts” (173). She argues that, as ... [more ▼]

In Postcolonial Writers in the Global Literary Marketplace (2007), Sarah Brouillette discusses “the centrality of questions of biography in reception of postcolonial texts” (173). She argues that, as against “the supposed dominant orthodoxy of anti-authorialism in literary studies” (173), successful marketing of postcolonial literature depends on – indeed requires – “biographical authenticity” so that postcolonial writers can figure valid interpreters of an authenticated location for an Anglo-American audience “schooled in multiculturalism.” Brouillette’s perception that the marketing of postcolonial writing depends on the coincidence between literary material and the biographical self of its author raises fascinating questions when it comes to examining ‘postcolonial’ biographies and autobiographies already relying on a “referential pact” (cf. Lejeune) because of their generic anatomy. Biographical fiction, then is a postcolonial nightmare come true, as the specificities of the genre endlessly displace the demand for “biographical authenticity” that is seen by Brouillette to condition the niche marketing of postcolonial literature. This paper looks at Hanif Kureishi’s My Ear at His Heart: Reading My Father (2004), in which the popular British Asian author narrativizes his ambivalent relationship with his father and retraces his father’s life from British India to the UK of the 1960s and 1970s. What is interesting is that Kureishi both relies on memory and on two unpublished ‘fictional’ texts by his late father to reconstruct the latter’s life, thus “imagining around [others’] imagination” (2004: 238), as he phrases it, that is, embracing fiction – not only memory – as a valid starting point for representing the life of his father. Susie Thomas writes that “It is a major irony that Kureishi, as a reader, approaches his father’s novels in a way that he would doubtless object to if his own fiction were raided for its autobiographical content” (2006: 189). My claim is that this “major irony” becomes a means, for Kureishi, of authorizing himself a place outside the ‘British Asian ghetto’ by playing up to the expectations of postcolonial niche marketing. [less ▲]

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See detailInverse opal photoanodes: preparation and optical properties
Dewalque, Jennifer ULiege; Spronck, Gilles ULiege; Baron, Damien ULiege et al

Conference (2017, March 01)

Perovskite compounds, used either in mesoscopic or planar solar cells, have allowed preparing highly efficient solid-state devices (>20%). In this study, we propose to design photoanodes with photonic ... [more ▼]

Perovskite compounds, used either in mesoscopic or planar solar cells, have allowed preparing highly efficient solid-state devices (>20%). In this study, we propose to design photoanodes with photonic structure in order to modulate light interaction. The periodic structure of porosity could add specific optical properties likely to increase light harvesting and reduce reflexion losses. Besides, current efficiencies reported for mesoscopic perovskite solar cells using an inorganic porous scaffold are slightly lower than those reported for planar perovskite cells mainly due to issues in perovskite infiltration. The control of the porous network architecture in terms of pore organization, size and connectivity could overcome this limitation. TiO2/perovskite and perovskite-only photoanodes with an inverse opal porous structure are prepared from templating techniques, using polystyrene beads as structuring agent. The photoanode microstructure is further characterized by scanning electron microscopy (SEM) and X-Ray diffraction (XRD). In parallel, light interaction is modeled in order to find the best compromise in terms of photonic architecture (pore size, organization, thickness…). [less ▲]

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See detailCan dark matter annihilations explain the AMS-02 positron data?
Laletin, Maxim ULiege

Conference (2017, March)

We show that no dark matter model with the conventional isotropic density distribution can provide a satisfactory explanation of the cosmic positron excess, while being consistent with Fermi-LAT data on ... [more ▼]

We show that no dark matter model with the conventional isotropic density distribution can provide a satisfactory explanation of the cosmic positron excess, while being consistent with Fermi-LAT data on diffuse gamma-ray background. [less ▲]

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See detailNear-death experiences: recent findings
Martial, Charlotte ULiege

Conference (2017, March)

Detailed reference viewed: 40 (6 ULiège)
See detailSelf-assembled surface swimmers and micromanipulators
Grosjean, Galien ULiege; Hubert, Maxime ULiege; Lagubeau, Guillaume et al

Conference (2017, March)

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See detailRibbons of superparamagnetic colloids in magnetic field
Darras, Alexis ULiege; Fiscina, Jorge; Pakpour, Maryam et al

Conference (2017, March)

While the aggregation process of superparamagnetic colloids in strong magnetic eld is well known on short time since a few decades, recent theoretical works predicted an equilibrium state reached after a ... [more ▼]

While the aggregation process of superparamagnetic colloids in strong magnetic eld is well known on short time since a few decades, recent theoretical works predicted an equilibrium state reached after a long time. In this talk, we present experimental observations of this equilibrium state with a twodimensional system and we compare our data with the predictions of a pre-existing model. Above a critical aggregation size, a deviation between the model and the experimental data is observed. This deviation is explained by the formation of ribbon-shaped aggregates. The ribbons are formed due to lateral aggregation of chains. An estimation of the magnetic energy for chains and ribbons shows that ribbons are stable structures when the number of magnetic grains is higher than N=30. [less ▲]

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See detailSelf-assembled surface swimmers and micromanipulators
Grosjean, Galien ULiege; Hubert, Maxime ULiege; Lagubeau, Guillaume et al

Conference (2017, March)

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Peer Reviewed
See detailBetween practices and belongings: intersectional stories of migrant women around food
Mescoli, Elsa ULiege

Conference (2017, March)

Short abstract Based on ethnographic fieldwork conducted among Moroccan women living in Milan hinterland in Italy, this paper aims at exploring the negotiated ways of performing both cultural and social ... [more ▼]

Short abstract Based on ethnographic fieldwork conducted among Moroccan women living in Milan hinterland in Italy, this paper aims at exploring the negotiated ways of performing both cultural and social belongings through food and at pointing out how these two dimensions can diverge or overlap in practice. Long abstract Migration constitutes for human beings an opportunity – among others – to develop a reflexive gaze upon one’s own habits (Rodier 2010), food habits in the case under study. In fact, not only changes that may occur in the ways of eating, cooking and supplying of produces, but also new relationships push individuals to question their everyday practices, which are associated with specific meanings. These meanings are socially and culturally oriented and performative, since they permit to state belongings as well as to take part to differently defined groups. In order to study these dynamics, I will present some ethnographic data collected during a research among Moroccan women living in Milan hinterland in Italy, mainly focusing on the history of two of them. The description of food practices, embedded in the narration of the migration experience and its consequences, which in its turn interacts with contextual discourses around immigrants and cultural diversity, reveals unexpected strategies to take social and cultural positionings within the collectivity. The theoretical framework upon which my analysis relies consists of a praxeological approach to subjectivation (Warnier 2001) combined with the consideration of the multi-dimensionality of the self which is derived from the intersectional perspective on identity (Crenshaw 1989; Anthias 2002; Yuval-Davis 2006). Through concrete practices involving food, individuals – women in this case – define their self as a layered complex of belongings, and they do that at both social and cultural level; thus proving how these two dimensions can diverge or overlap. [less ▲]

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See detailCan science explain consciousness? Lessons from coma and related states
Martial, Charlotte ULiege

Conference (2017, March)

Understanding consciousness remains one of the greatest mysteries for science to solve. How do our brains work? How can we know if some patients in coma have any consciousness left and how could we ... [more ▼]

Understanding consciousness remains one of the greatest mysteries for science to solve. How do our brains work? How can we know if some patients in coma have any consciousness left and how could we communicate with them? What are near-death experiences? What is brain death? What happens in our brains during dreaming, hypnosis or meditation? At present, nobody understands how matter (our trillions of neural connections) becomes perception and thought. We will here briefly review some neurological facts on consciousness and impaired consciousness. Thanks to recent advances in (neuroimaging) technology, the mapping of conscious perception and cognition in health (e.g., conscious waking, sleep, dreaming, hypnosis, meditation, sleepwalking and anesthesia) and in disease (e.g., coma, near-death, “vegetative” state, seizures, hallucinations etc) is providing exiting new insights into the functional neuroanatomy of human consciousness. Our perception of the outside world (sensory awareness; what we see, hear, etc.) and our awareness of an inner world (self-awareness; the little "voice" inside that "speaks" to ourselves) seemingly depend on two separate networks we could recently identify. Philosophers might argue that the subjective aspect of the mind will never be sufficiently accounted for by the objective methods of reductionistic science. We here prefer a more pragmatic approach and remain naively optimistic that technological advances might ultimately lead to an understanding of the neural substrate of human consciousness. [less ▲]

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See detailQuantum fidelity of symmetric multipartite states
Neven, Antoine ULiege; Mathonet, Pierre ULiege; Gühne, Otfried et al

Conference (2017, March)

For two symmetric quantum states one may be interested in maximizing the overlap under local operations applied to one of them. The question arises whether the maximal overlap can be obtained by applying ... [more ▼]

For two symmetric quantum states one may be interested in maximizing the overlap under local operations applied to one of them. The question arises whether the maximal overlap can be obtained by applying the same local operation to each party. We show [1] that for two symmetric multiqubit states and local unitary transformations this is the case; the maximal overlap can be reached by applying the same unitary matrix everywhere. For local invertible operations (stochastic local operations assisted by classical communication equivalence), however, we present counterexamples, demonstrating that considering the same operation everywhere is not enough. [less ▲]

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See detailComplication with convective core boundary
Thoul, Anne ULiege

Conference (2017, March)

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See detailThe Mad Exotic in Caribbean Literature: Stories of Marginalisation, Commodification and Empowerment
Ledent, Bénédicte ULiege

Conference (2017, March)

Caribbean literature is replete with migrant figures that are viewed as both exotic and mad. Victims of what Graham Huggan has called “a particular mode of aesthetic perception”, these characters ... [more ▼]

Caribbean literature is replete with migrant figures that are viewed as both exotic and mad. Victims of what Graham Huggan has called “a particular mode of aesthetic perception”, these characters distinguish themselves by their cultural difference which might inspire initial fascination, yet results in most cases in exploitative commodification often followed by radical rejection. The iconic example of such an occurrence is of course Antoinette aka Bertha Mason in Jean Rhys’s Wide Sargasso Sea (1960). I would like to analyse similar stories of exoticization followed by marginalisation written by West Indian authors (Rhys herself but also Erna Brodber and Dionne Brand), and examine to what extent their characters manage to subvert their so-called exoticism to take advantage of it and achieve empowerment, however ambiguous this might turn out to be. [less ▲]

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See detailComplementary biophysical tools to investigate lipid specificity in the interaction between bioactive peptides and the plasma membrane
Deleu, Magali ULiege; Lins, Laurence ULiege

Conference (2017, March)

Plasma membranes are complex entities common to all living cells. The basic principle of their organization appears very simple, but they are actually of high complexity and represent very dynamic ... [more ▼]

Plasma membranes are complex entities common to all living cells. The basic principle of their organization appears very simple, but they are actually of high complexity and represent very dynamic structures. The interactions between bioactive molecules notably peptides, and lipids are important for numerous processes, from drug bioavailability to viral fusion. The cell membrane is a carefully balanced environment and any changes inflicted upon its structure by a bioactive peptide must be considered in conjunction with the overall effect that this may have on the function and integrity of the membrane. As a general concept, understanding the mechanism at the molecular level by which bioactive molecules interact with cell membranes is of fundamental importance. Lipid specificity is a key factor for the detailed understanding of the penetration and/or activity of lipid-interacting peptides and of mechanisms of some diseases. Further investigation in that way should improve drug discovery and development of membrane-active molecules in many domains such as health, plant protection or microbiology. In this talk, we propose to overview some complementary “in vitro” and “in silico” biophysical approaches that can give information about lipid specificity at a molecular point of view. Our strategy is illustrated on different bioactive peptides such as antimicrobial peptides, peptides involved in human diseases or in plant cell signalling. [less ▲]

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See detailUltrasons par laser pour l'inspection de matériaux composites. Comparaison entre génération à 532 nm et 10,6 µm. Effet de la géométrie du faisceau de génération
Vandenrijt, Jean-François ULiege; Languy, Fabian ULiege; Walter, Julien et al

Conference (2017, March)

Un système de contrôle non destructif basé sur la génération d'ultrasons par laser à 532 nm et de détection par laser, entièrement fibré et robotisé, est développé au CSL. Nous le comparons à un système ... [more ▼]

Un système de contrôle non destructif basé sur la génération d'ultrasons par laser à 532 nm et de détection par laser, entièrement fibré et robotisé, est développé au CSL. Nous le comparons à un système équivalent du CTA basé sur la génération plus classique avec un laser CO2 (10,6 µm). De plus nous montrons les résultats d'investigations concernant différentes géométrie du faisceau de génération. [less ▲]

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See detailOrder and Synopsis in Descartes 1640-1641
Dubouclez, Olivier ULiege

Conference (2017, March)

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See detailInterférométrie de speckle à 10.6 µm et shearographie à 532 nm en temps réel temps moyenné et décalage de phase. Comparaison et application pour identification des modes de vibrations sur shaker industriel
Vandenrijt, Jean-François ULiege; Languy, Fabian ULiege; Thizy, Cédric ULiege et al

Conference (2017, March)

Deux méthodes interférométriques sont comparées pour l'identification des modes de vibration en temps réel-temps moyenné avec décalage de phase. Il s'agit d'une part de l'interférométrie de speckle (ESPI ... [more ▼]

Deux méthodes interférométriques sont comparées pour l'identification des modes de vibration en temps réel-temps moyenné avec décalage de phase. Il s'agit d'une part de l'interférométrie de speckle (ESPI) à 10,6 μm et, d'autre part, de la shearographie à 532 nm. La comparaison sur une aube de vibration en laboratoire nous a conduit à sélectionner la shearographie en lumière visible pour l'application avec un shaker en milieu industriel, où les conditions de travail ne permettent pas d'utiliser des techniques interférométriques plus conventionnelles. [less ▲]

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See detailMicro-mechanical testing of magnesium based composites reinforced by carbon fibers manufactured by friction stir processing
Simar, Aude; Ryelandt, Sophie; Delannay, Francis et al

Conference (2017, February 28)

Short C fibres–Mg matrix (AZ91D) composites have been produced by friction stir processing sandwiches made of a layer of C fabric stacked between two sheets of Mg alloy. The process parameters have been ... [more ▼]

Short C fibres–Mg matrix (AZ91D) composites have been produced by friction stir processing sandwiches made of a layer of C fabric stacked between two sheets of Mg alloy. The process parameters have been optimized to ensure a good fiber distribution. 3D X-ray tomography reveals that the fibers orient like onion rings. Thermal treatments have allowed to modify the flow stress level of the matrix material. Tensile testing inside the scanning electron microscope have revealed the decohesion at the fiber/matrix interface if the fibers are preferentially oriented perpendicularly to the loading direction. Modelling allows to estimate the stress needed to initiate this decohesion is about 250 MPa, i.e. appearing early in heat treated samples. To compare with different loading conditions, micro-compression and instrumented micro-indentation testing have also been performed. The consequence of the loading path on the decohesion is discussed. [less ▲]

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See detailCarbon dioxide evasion from the Seine River: Drivers analysis and spatiotemporal reconstruction
Marescaux, A; Thieu, v; Borges, Alberto ULiege et al

Conference (2017, February 26)

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See detailMethylglyoxal-induced carbonyl stress: perspectives of a new anti-GBM therapy
Nokin, Marie-Julie ULiege

Conference (2017, February 24)

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