References of "Scientific congresses and symposiums"
     in
Bookmark and Share    
Full Text
See detailAs teorias semióticas diante da fotografia
Dondero, Maria Giulia ULg

in Rodrigues, Angelica; Rocha, Nildicéia (Eds.) Proceedings VI SELIN – The Unesp Linguistics Studies Seminar (2017, January)

Dans ce texte, je me propose de revenir sur les travaux en sémiotique qui ont marqué les études du champ interdisciplinaire de la photographie et de les poursuivre; l’objectif principal est de fournir ... [more ▼]

Dans ce texte, je me propose de revenir sur les travaux en sémiotique qui ont marqué les études du champ interdisciplinaire de la photographie et de les poursuivre; l’objectif principal est de fournir quelques pistes pour étudier, d’un point de vue sémiotique, l’image photographique en tant qu’objet pris dans des pratiques d’usage et d’interprétation diversifiées au sein des statuts sociaux de l’art, de la science, de la religion. [less ▲]

Detailed reference viewed: 20 (1 ULg)
Full Text
Peer Reviewed
See detailImpact of the cumulated proteins and energy deficits on ICU patient’s outcome
PAGE, Isaline ULg; Warnier, Stéphanie; NYS, Monique ULg et al

in Annals of Intensive Care (2017, January), 7(Suppl1), 200

Detailed reference viewed: 17 (2 ULg)
Full Text
Peer Reviewed
See detailAssessing Inter-and Intramolecular Continuous-Flow Strategies towards Methylphenidate Hydrochloride
Gerardy, Romaric ULg; Winter, Marc; Vizza, Alessandra et al

in Reaction Chemistry and Engineering (2017)

The batch-to-flow translation of inter- and intramolecular strategies for the diastereoselective preparation of the active pharmaceutical ingredient threo-methylphenidate hydrochloride is presented. Both ... [more ▼]

The batch-to-flow translation of inter- and intramolecular strategies for the diastereoselective preparation of the active pharmaceutical ingredient threo-methylphenidate hydrochloride is presented. Both inter- and intramolecular strategies imply the telescoping of multiple processing steps and the generation of unstable diazospecies under continuous-flow conditions. The intermolecular strategy relies on an unprecedented continuous-flow Rh-catalyzed intermolecular C-H carbene insertion, providing enriched threo-N-Boc methylphenidate in 38% or 19% isolated yield according to sequential or fully telescoped processes, respectively. Quantitative Boc-deprotection is carried out off-line. The intramolecular strategy relies on a continuous-flow thermal intramolecular C-H carbene insertion, providing enriched threo-methylphenidate hydrochloride in 70% isolated yield. A continuous-flow photochemical alternative is also presented. The critical step of the most promising intramolecular strategy is implemented on mesoscale in a pilot-scale continuous-flow reactor. [less ▲]

Detailed reference viewed: 15 (3 ULg)
Peer Reviewed
See detailLists of Gifts in the Mamluk Diplomatic Tradition
Bauden, Frédéric ULg

in Bauden, Frédéric (Ed.) Culture matérielle et contacts diplomatiques entre l’Occident latin, Byzance et l’Orient islamique (XIe-XVIe siècle) (2017)

Detailed reference viewed: 24 (0 ULg)
Peer Reviewed
See detailGrowth velocity of preterm infants - analysis and recommendations
Fenton, Tanis; Hoyos, Angela; Groh-Wargo, Sharon et al

Conference (2017)

Detailed reference viewed: 24 (1 ULg)
See detailFrançois Ier et les arts du Nord (1515-1547). Des liens à explorer et à appronfondir encore
Fagnart, Laure ULg; Lecocq, Isabelle

in Fagnart, Laure; Lecocq, Isabelle (Eds.) François Ier et les arts du Nord (1515-1547) (2017)

Detailed reference viewed: 26 (3 ULg)
Peer Reviewed
See detailLa bibliothèque d'Antoine Galland
Bauden, Frédéric ULg

in Bauden, Frédéric; Waller, Richard (Eds.) Antoine Galland (1646-1715) et son Journal. Actes du colloque international organisé à l’Université de Liège (16-18 janvier 2015) à l’occasion du tricentenaire de sa mort (2017)

Detailed reference viewed: 14 (0 ULg)
Full Text
Peer Reviewed
See detailTowards an “integrated conservation” : the contribution of R.M. Lemaire and Piero Gazzola during the first decade of ICOMOS (1965-1975)
Houbart, Claudine ULg

in Szmygin, Bogusław (Ed.) 'HERITAGE IN TRANSFORMATION. HERITAGE PROTECTION IN THE 21ST CENTURY - PROBLEMS, CHALLENGES, PREDICTIONS' (2017)

Respectively elected first President and first Secretary General during the first general assembly of ICOMOS in Cracow in 1965, Piero Gazzola and Raymond M. Lemaire have deeply contributed to the success ... [more ▼]

Respectively elected first President and first Secretary General during the first general assembly of ICOMOS in Cracow in 1965, Piero Gazzola and Raymond M. Lemaire have deeply contributed to the success of the newly born organisation. During the first years, they didn’t only provoke the creation of numerous national committees around the world, but they also positioned ICOMOS as a major actor of the international conservation scene, through the organisation of conferences and an active participation in the debates initiated by Unesco and the Council of Europe, for which ICOMOS acted as a consultant. The study of Raymond M. Lemaire’s archive, kept at the KU Leuven in Belgium, clearly shows that one of the major concerns of both Lemaire and Gazzola, who had been, in 1964, amongst the main authors of the Venice Charter, was to broaden the scope of the document in order to address the issue of pre-industrial city centres, threatened by late reconstruction or development projects mostly promoting functionalist approaches. Depending on the time available, this presentation will address one or various aspects of Lemaire’s and Gazzola’s contribution to the emergence of integrated conservation, consecrated by the European Charter and the Amsterdam Declaration of 1975, that is: the new ideas (social value of heritage for example) developed during the expert meetings organised by the Council of Europe in 1965-1968, where they both represented ICOMOS. These ideas are synthesised in the report “Saving the face of Europe” in 1973, the relation between these theoretical contributions and Lemaire and Gazzola’s contemporary field experience, the role of Eastern Europe experiences (D. Libal in Prague and M. Horler in Budapest) in the development of an appropriate methodology to address urban issues, the differences between the concept of “integral planning” proposed by Lemaire in 1973 and the “integrated conservation” that was promoted by the 1975 Council of Europe charters, an epilogue could mention the revision projects of the Venice Charter between 1975 and 1981. Based on my PhD about R.M. Lemaire, recently presented at the KU Leuven (Belgium), this presentation aims at clarifying and illustrating the shift from monument restoration towards city “reanimation” or “rehabilitation” during the late sixties and seventies, as well as paying tribute to the action of two of the most important figures of the beginnings of ICOMOS. [less ▲]

Detailed reference viewed: 50 (12 ULg)
Full Text
Peer Reviewed
See detailOn the Elaboration of Metal-Ceramic Composite Coatings by Laser Cladding
Mertens, Anne ULg; L'Hoest, Thibaut; Magnien, Julien et al

in Materials Science Forum (2017), 879

This paper reports on a preliminary investigation into the elaboration, by the additive process known as laser cladding, of composite coatings with a matrix of stainless steel 316L reinforced with varying ... [more ▼]

This paper reports on a preliminary investigation into the elaboration, by the additive process known as laser cladding, of composite coatings with a matrix of stainless steel 316L reinforced with varying contents of tungsten (WC) or silicon carbides (SiC) particles. Laser cladding is characterised by ultra-fast solidification and cooling rates, thus giving rise to ultra-fine out-of-equilibrium microstructures and potentially enhanced mechanical properties. Both types of composite coatings – i.e. with SiC or WC ‒ are compared in terms of their microstructures and hardness. Special attention is given to the dissolution of the carbides particles and to interfacial reactions taking place between the particles and the metallic matrix. [less ▲]

Detailed reference viewed: 77 (15 ULg)
Peer Reviewed
See detailThe Characteristics of al-Maqrīzī's Handwriting
Bauden, Frédéric ULg

in Bauden, Frédéric; Franssen, Elise (Eds.) "In the Author's Hand": Holograph and Authorial Manuscripts in the Islamic Handwritten Tradition (2017)

Detailed reference viewed: 12 (0 ULg)
Peer Reviewed
See detailGrowth velocity of preterm infants - analysis and recommendations
Fenton, Tanis; Hoyaos, Angela; Groh-Wargo, Sharon et al

Conference (2017)

Detailed reference viewed: 23 (2 ULg)
Full Text
Peer Reviewed
See detailCould Piano key weirs be subject to nappe oscillations?
Lodomez, Maurine ULg; Pirotton, Michel ULg; Dewals, Benjamin ULg et al

in 3rd International Workshop on Labyrinth and Piano Key Weirs - PKW 2017 (2017)

Nappe oscillation may affect a variety of free overflow hydraulic structures operating at low heads such as crest gates and various types of weirs. This phenomenon produces oscillations in the thin nappe ... [more ▼]

Nappe oscillation may affect a variety of free overflow hydraulic structures operating at low heads such as crest gates and various types of weirs. This phenomenon produces oscillations in the thin nappe cascading downstream of the control structure. These oscillations can result in a high noise levels that may affect people and structures located nearby. With long linear and thin overtopping walls, piano key weirs might be subject to strong nappe oscillation risks, as a few documented cases with labyrinth weirs. However, the specific geometric features of piano key weirs, such as the outlet ramps or the limited width of the inlet apex, could perhaps prevent the development of nappe oscillation. In this paper, a prototype-scale linear weir is operated to assess the risk of nappe oscillations on a piano key weir like configuration (sidewall). In particular, the effect of the weir width and inclined apron is analyzed. The experimental results show that nappe oscillation development should not occur on piano key weir, contrary to what might be observed on a labyrinth weir with the same crest. [less ▲]

Detailed reference viewed: 13 (2 ULg)
Full Text
Peer Reviewed
See detailLes frontières du droit à l'épreuve des films de mafias
Thirion, Nicolas ULg; Pasteger, David ULg

in Flores-Lonjou, Magalie (Ed.) Frontière(s) au cinéma - Actes des septièmes rencontres "Droit et cinéma" (2017)

demander dans quelle mesure l’injonction du brigand qui exige « la bourse ou la vie ! » peut être comparée à la norme de comportement édictée par un Etat sous la forme d’une loi, c’est poser la ... [more ▼]

demander dans quelle mesure l’injonction du brigand qui exige « la bourse ou la vie ! » peut être comparée à la norme de comportement édictée par un Etat sous la forme d’une loi, c’est poser la sempiternelle question de la frontière qui sépare le droit du non-droit, tout au moins dans une perspective juspositiviste, en tant que cette école de théorie du droit refuse de définir le phénomène juridique en se référant à une valeur ou un ensemble de valeurs. La frontière du droit et du non-droit est en effet particulièrement difficile à tracer, nonobstant plusieurs siècles de discussions philosophiques à ce sujet. Lorsque, fatigué de parcourir les chemins, le brigand décide de s’installer en ville pour s’y adonner au racket des commerçants du quartier et qu’il s’adjoint ensuite le concours d’autres bandits, c’est un gang de malfaiteurs qui voit le jour. Si, ultérieurement, ce gang se concerte avec d’autres bandes de truands pour s’épauler mutuellement dans les exactions auxquelles ils se livrent sur leurs territoires respectifs, il prend alors la forme d’une organisation criminelle ou, au sens large du terme, d’une « mafia ». Le cinéma de Francis Ford Coppola, Martin Scorsese, Brian De Palma, Sergio Leone ou bien encore Matteo Garrone, entre autres, dépeint, souvent avec réalisme, la genèse et le fonctionnement de telles organisations criminelles. La communication a proposé, au moyen d’illustrations tirées des films de ces grands cinéastes, une analyse de microscopie juridique du crime organisé. Une description serrée de la particule élémentaire du phénomène juridique, identifiée par Lucien François dans son ouvrage de théorie du droit Le cap des Tempêtes sous l’appellation de « jurème », met en lumière une indéniable proximité entre les techniques de pouvoir utilisées respectivement par le brigand isolé, la bande organisée et l’Etat souverain. En remontant ensuite vers la structure plus complexe d’un système étatique, on se demandera si, en fin de compte, dans la vision juspositiviste poussée au bout de sa logique par Lucien François, l’Etat ne pourrait être réduit, d’un point de vue ontologique, à un pouvoir de fait comparable, par les techniques de contrainte qu’il exerce sur ses sujets, à une organisation criminelle – abstraction faite des valeurs promues ou poursuivies par tel ou tel appareil étatique. [less ▲]

Detailed reference viewed: 120 (34 ULg)
Full Text
Peer Reviewed
See detailFrom the spirit to the letter of the charters : mind the gap for the future
Houbart, Claudine ULg; Dawans, Stéphane ULg

in Szmygin, Bogusław (Ed.) 'HERITAGE IN TRANSFORMATION. HERITAGE PROTECTION IN THE 21ST CENTURY - PROBLEMS, CHALLENGES, PREDICTIONS' (2017)

Since the 1960’s and the foundation of ICOMOS, charters have been considered as a sort of conservation gospel. In this presentation, we would like to question this fact, in the light of the very ... [more ▼]

Since the 1960’s and the foundation of ICOMOS, charters have been considered as a sort of conservation gospel. In this presentation, we would like to question this fact, in the light of the very particular production and reception conditions of the documents. What may be perceived as a mostly provocative approach seems to us a constructive basis for future reflections. When we read and use charters – in this presentation, we will mainly focus on the Venice Charter, the Nara document and the Riga Charter – , we forget too often that they have been written by human beings, sometimes very tired, in a hurry, and even arguing with each other. The study of the archival material related to the writing of the Venice Charter and the Nara document very clearly illustrates that these documents are rather a conceptual “bricolage” than indisputable normative texts as if they had been written by lawyers. In the case of the Venice Charter, the archive as well as the records of Raymond M. Lemaire, Paul Philippot or Gertrud Tripp make clear that the document has been written at the last moment and adopted too rapidly by an assembly too glad to finally have a updated version of the Athens charter. As a consequence, only a few years later, Raymond Lemaire and Piero Gazzola already questioned the validity of the new text in the light of the extension of heritage debates to the city centers. On the other hand, the fact that a French and an English version of the Nara document were written in parallel by Raymond M. Lemaire and Herb Stovel in 1994 has had immediate consequences on the content and the formulation of the text, which logically left both of them unsatisfied with the result. Even so, the Venice charter and the Nara document still have force of law today. Yet, besides the particular circumstances of their writing, we must keep in mind that these texts answered specific questions, closely linked to the context: a critical answer to postwar reconstruction for the first, and apparently opposed visions of authenticity between East and West for the second. As far as the Riga charter is concerned, the influence of the delicate context of the Eastern bloc collapse is evident. For this reason, using such documents today requires at least a critical reading, going back to the spirit beyond the text. Our presentation will illustrate ad absurdum, through recent case studies, how a cynical reading of such documents can lead to interventions dangerously in conflict with this spirit and the fundamental ideals of conservation philosophy. In the era of late capitalism and heritage globalization, are we allowed to forget the conditions and the context in which our doctrinal documents have been written to justify anything and everything and to meet, for example, the “tourist gaze”, the “nouveaux riches” taste or the architect’s egomania? Do architects really want to know what the writers of the Venice charter’s article 9 meant by the “contemporary stamp”? What are the limits of the tolerance towards reconstruction first expressed by the Nara document, and a few years later, the charter of Riga? So many questions that ICOMOS must face if it wants to pursue its guiding mission in a mostly financial world. [less ▲]

Detailed reference viewed: 60 (10 ULg)
See detailLa diffusion des Blattmasken dans le bassin Méditerranéen. Entre tradition et innovation
Derwael, Stéphanie ULg

in Actes du colloque "Colloque La diffusion des répertoires décoratifs en Méditerranée antique et médiévale" (2017)

Detailed reference viewed: 16 (0 ULg)
Peer Reviewed
See detailUne architecture de frontières : les monastères des annonciades célestes dans les Trois-Evêchés (17e-18e siècles)
Piront, Julie ULg

in Bourdieu, Catherine (Ed.) Vie religieuse féminine dans les Trois-Evêchés : vocations, missions et cadres d'existence (2017)

Les Trois-Evêchés ont été un terrain fertile pour les congrégations féminines aux 16e-18e siècles puisqu'ils ont vu la naissance de projets religieux conjuguée à une installation massive de « nouveaux ... [more ▼]

Les Trois-Evêchés ont été un terrain fertile pour les congrégations féminines aux 16e-18e siècles puisqu'ils ont vu la naissance de projets religieux conjuguée à une installation massive de « nouveaux ordres » nés ou réformés dans le sillage du concile de Trente. Fondées en Italie au début du 17e siècle, les annonciades célestes se sont implantées majoritairement sur la « dorsale catholique ». Au cœur de ce territoire de frontières, les Trois-Évêchés occupent une position géographique, politique et religieuse incontournable. Dans le cadre de cette journée d’études, il s’agira d’interroger les spécificités éventuelles des cinq monastères que les annonciades célestes firent édifier dans les Trois-Évêchés en les comparant à l’ensemble de la production architecturale de l’ordre en Europe aux 17e et 18e siècles. En allant plus loin, nous verrons comment les représentations mentales de ces édifices ont participé à la genèse de l’identité de l’ordre, notamment grâce aux sources écrites et iconographiques qui en témoignent. [less ▲]

Detailed reference viewed: 16 (0 ULg)
Full Text
See detailBiostratigraphy of the JLMD-EW8 borehole and palaeogeographic interpretation
Steemans, Philippe ULg; Breuer, P.; Al-Hajri, S. et al

Conference (2016, December 21)

Detailed reference viewed: 9 (1 ULg)
See detailRaman imaging for diagnostic application
Malherbe, Cédric ULg; Gilbert, Bernard ULg; Eppe, Gauthier ULg

Poster (2016, December 19)

Specific dynamic biochemical compositions and molecular structures characterise healthy cells and tissues. This also stands for pathologies or cellular abnormalities which are accompanied by biochemical ... [more ▼]

Specific dynamic biochemical compositions and molecular structures characterise healthy cells and tissues. This also stands for pathologies or cellular abnormalities which are accompanied by biochemical and molecular changes. Raman spectroscopy can provide unique inputs to correlate the molecular composition and its variations with the diagnosis. In addition, the presence of metal nanoparticles in the molecule vicinity induces a remarkable enhancement (up to 1000000 times) of the Raman signal of small molecules (known as SERS effect). It opens towards applications in the field of trace analysis. In preparation for clinical applications, we evaluate, by Raman mapping, the signal detected from a SERS target deposited on solid state support. [less ▲]

Detailed reference viewed: 14 (1 ULg)
Full Text
See detailIntegrated microfluidic device for the synthesis of SERS substrates
Emonds-Alt, Gauthier ULg; Malherbe, Cédric ULg; Monbaliu, Jean-Christophe ULg et al

Poster (2016, December 19)

The goal of this work is to develop a quantitative analytical method for the glyphosate and its major metabolite the aminomethylphosphonic acid (AMPA) by coupling microfluidics with surface enhanced Raman ... [more ▼]

The goal of this work is to develop a quantitative analytical method for the glyphosate and its major metabolite the aminomethylphosphonic acid (AMPA) by coupling microfluidics with surface enhanced Raman spectroscopy (SERS). This work is divided into 4 axes : (a) bimetallic nanoparticles synthesis in a microreactor, (b) nanoparticles functionnalisation, (c) SERS quantification of glyphosate/AMPA and (d) miniature prototype development composed of axes a to c. The first section aims at the synthesis of bimetallic nanoparticles (Au-Ag, Au-Cu and Ag-Cu) in a microfluidic device. This microfluidic device integrates a first section for the synthesis of monometallic nanoparticles (core) and a second section for the reductive deposition of a second metal (shell). The second axe of this work deals with the functionnalisation of nanoparticles to improve the selectivity of this method for the selected analytes. Two types of functionnalisation are studied : PEGylation (a) with multi-arm PEG ending with -SH and/or (b) with linear heterobifunctionnal PEG. The third axe consists in measuring quantitatively glyphosate and AMPA in different matrices, such as water, urine and fruit juice. Finally, the forth axe deals with the development of a portable detection system to perform on-site analysis. This prototype integrates the microfluidic device for nanoparticles synthesis, their functionnalisation, an injection port followed by a mixing section for the sample and an integrated Raman spectrometer for in-line analysis. [less ▲]

Detailed reference viewed: 10 (1 ULg)
Peer Reviewed
See detailInterspecific variation of warning calls in piranhas: a comparative analysis
Melotte, Geoffrey ULg; Vigouroux, Régis; Michel, Christian ULg et al

Conference (2016, December 17)

Fish sounds are known to be species-specific, possessing unique temporal and spectral features. We have recorded and compared sounds in eight piranha species to evaluate the potential role of acoustic ... [more ▼]

Fish sounds are known to be species-specific, possessing unique temporal and spectral features. We have recorded and compared sounds in eight piranha species to evaluate the potential role of acoustic communication as a driving force in clade diversification. All piranha species showed the same kind of sound-producing mechanism: sonic muscles originate on vertebrae and attach to a tendon surrounding the bladder ventrally. Contractions of the sound-producing muscles force swimbladder vibration and dictate the fundamental frequency. It results the calling features of the eight piranha species logically share many common characteristics. In all the species, the calls are harmonic sounds composed of multiple continuous cycles. However, the sounds of Serrasalmus elongatus (higher number of cycles and high fundamental frequency) and S. manueli (long cycle periods and low fundamental frequency) are clearly distinguishable from the other species. The sonic mechanism being largely conserved throughout piranha evolution, acoustic communication can hardly be considered as the main driving force in the diversification process. However, sounds of some species are clearly distinguishable despite the short space for variations supporting the need for specific communication. Behavioural studies are needed to clearly understand the eventual role of the calls during spawning events. [less ▲]

Detailed reference viewed: 17 (3 ULg)
See detailManufacture and use of points at Maisières-Canal
Touzé, Olivier ULg; Coppe, Justin ULg; Taipale, Noora ULg et al

Conference (2016, December 17)

Detailed reference viewed: 10 (0 ULg)
See detailPrésentation du projet Economie et pratiques des sociétés gravettiennes dans le Nord-Ouest de l’Europe (ECOPRAT)
Touzé, Olivier ULg; Salomon, Hélène ULg; Goutas, Nejma et al

Poster (2016, December 17)

Nous présentons dans cette contribution un projet collectif porté par le Service de Préhistoire de l’Université de Liège et l’équipe Ethnologie préhistorique de l'unité mixte de recherche du CNRS ... [more ▼]

Nous présentons dans cette contribution un projet collectif porté par le Service de Préhistoire de l’Université de Liège et l’équipe Ethnologie préhistorique de l'unité mixte de recherche du CNRS Archéologie et Sciences de l'Antiquité. Le projet « ECOPRAT » entend contribuer au renouvellement des connaissances relatives aux sociétés gravettiennes du Nord-Ouest européen, et prolonger ainsi la dynamique de recherche actuelle touchant ces sociétés (Bodu et al., 2013). Il s’inscrit dans une perspective pluridisciplinaire envisagée grâce à l’association d’études technologiques, tracéologiques et archéozoologiques. Quatre sites majeurs du Nord-Ouest européen ont été retenus : les gisements de plein air de Maisières-Canal (Prov. Hainaut, Belgique) et d’Ormesson – Les Bossats (Seine-et-Marne, France), et les grottes de Goyet (Prov. Namur, Belgique) et du massif d’Arcy-sur-Cure (Yonne, France). Les sites sélectionnés possédant des historiques de recherche spécifiques, la stratégie d’analyse adoptée pour chacun d’eux est développée en adéquation avec l’état des connaissances actuelles. Les recherches sont ainsi guidées par l’obtention de données inédites qui doivent permettre, à terme : 1) une lecture renouvelée et croisée des industries lithiques et osseuses, ainsi que des ensembles fauniques et des matières colorantes découverts dans ces gisements, 2) un rééquilibrage quantitatif et qualitatif de l’intégration des différentes sources documentaires disponibles, la recherche s’étant davantage concentrée depuis plus d’un siècle sur les données de l’industrie lithique. Les deux gisements de plein air réunissent les conditions indispensables au développement d’une approche interdisciplinaire permettant de croiser objets et méthodes d’étude, afin de proposer une lecture fine des comportements techniques et économiques des sociétés gravettiennes. A cet égard, cette contribution est l’occasion de présenter les premiers résultats obtenus sur le site de Maisières-Canal. Les recherches réalisées jusqu’à présent permettent de réévaluer l’importance de l’industrie sur matières dures d’origine animale, au sein de laquelle le travail de l’ivoire de mammouth se révèle particulièrement significatif. En outre, le corpus faunique traduit une exploitation récurrente du lièvre, ce type de comportement s’avérant singulier au regard de ce qui est habituellement documenté chez les sociétés du Gravettien. Parmi les différentes activités susceptibles de laisser une trace archéologique, l’usage de matières colorantes apparaît particulièrement discret dans le cadre spatio-temporel considéré. Cet usage est cependant avéré dans les grottes d’Arcy-sur-Cure (grottes du Renne et du Trilobite), lesquelles permettront ainsi d’entreprendre une étude ciblée de ce phénomène. Enfin, les grottes de Goyet offrent la possibilité de contribuer à la connaissance de la séquence gravettienne du Nord-Ouest européen. Si le long historique des fouilles menées dans ces grottes, ainsi que les mélanges manifestes affectant les collections, ne permettent pas d’envisager une étude approfondie des comportements gravettiens, des observations préliminaires permettent en revanche de s’interroger sur le potentiel de ces sites pour la reconstitution de cette séquence. A l’instar de ce qu’ont montré les travaux récemment conduits sur le Gravettien de Spy (Pesesse & Flas, 2013), il est en effet vraisemblable que les grottes de Goyet aient été occupées à plusieurs moments de la période gravettienne. BODU P., CHEHMANA L., KLARIC L., MEVEL L., SORIANO S., TEYSSANDIER N. (dir.), 2013. Le Paléolithique supérieur ancien de l’Europe du Nord-Ouest : réflexions et synthèses à partir d’un projet collectif de recherche sur le centre et le sud du Bassin parisien, Actes du colloque de Sens, 15-18 avril 2009. Paris : Société préhistorique française (Mémoires de la Société préhistorique française, 56), 516 p. PESESSE D., FLAS D., 2013. Which Gravettians at Spy? In : ROUGIER H., SEMAL P. (eds), Spy Cave. 125 years of multidisciplinary research at the Betche-aux-Roches (Jemeppe-sur-Sambre, Province of Namur, Belgium). Volume I. Bruxelles : Institut royal des Sciences naturelles de Belgique, Société royale belge d'Anthropologie et de Préhistoire, NESPOS Society (Anthropologica et Praehistorica, 123), pp. 257-268. [less ▲]

Detailed reference viewed: 28 (2 ULg)
Full Text
See detailTrophic ecology of Southern Ocean sea stars inferred from stable isotopes ratios of C and N
Le Bourg, Baptiste ULg; Blanchard, Alice; Danis, Bruno et al

Conference (2016, December 17)

The Southern Ocean undergoes strong and contrasted impacts of climate change. Increasing seawater temperature and sea ice cover reduction in Western Antarctic Peninsula and associated regions will likely ... [more ▼]

The Southern Ocean undergoes strong and contrasted impacts of climate change. Increasing seawater temperature and sea ice cover reduction in Western Antarctic Peninsula and associated regions will likely impact food web structure and function. Sea stars (Echinoderms: Asteroidea) are an important group of the Southern Ocean benthos. They typically have highly variable feeding habits and are potentially more resistant than other organisms to temperature changes. Consequently, they will likely be impacted by modifications of the food web rather than by direct warming. Investigating their trophic ecology is therefore necessary to infer how climate change will impact them. In this context, the aim of this study was to use stable isotopes ratios of C, N and S to infer sea stars trophic ecology. During austral summers 2006 and 2009, sea stars were sampled in Subantarctic and Antarctic locations, with most of the samples coming from South Shetland Islands and South Georgia. The isotopic niche (proxy of the trophic niche) associated to each sea star population was explored through SIBER (Stable Isotope Bayesian Ellipses in R) metrics. Stable isotope ratios of sea stars were clearly different between South Shetland Islands and South Georgia. Sea stars of South Shetland Islands had smaller isotopic niches than sea stars of South Georgia. The overlap between the isotopic niches of sea star species was also important in South Shetland Islands, while isotopic niches of South Georgia were well separated. Difference of niche width and overlap between the two regions may be the result of different environmental conditions. In South Shetland Islands, sea star species may exploit a common benthic community relying on organic matter released during sea ice summer melting. In contrast, South Georgia is an oligotrophic environment with no sea ice. As resources are more limited, a higher trophic segregation between sea stars may appear to limit competition. Ultimately, this project highlighted the importance of sea ice in the trophic ecology of Antarctic sea stars. Our results suggest that future reduction of sea ice extent in Western Antarctica may have deleterious effect on sea star populations. [less ▲]

Full Text
See detailChapter VIII "Equations and languages" in J.-É. Pin, Mathematical Foundations of Automata Theory
Stipulanti, Manon ULg

Conference (2016, December 16)

We present the chapter VIII titled "Equations and Langages" in Jean-Éric Pin, Mathematical Foundations of Automata Theory.

Detailed reference viewed: 27 (5 ULg)
Full Text
Peer Reviewed
See detailBioaccumulation of trace metals in Mytilus galloprovincialis from the Algerian west coast
Rouabhi, Leila; Rouanne, Hassen Omar; Benkrama, Hadjer et al

Poster (2016, December 16)

Algeria has a 1622 km long coastal strip where a large proportion of the population and the main economic and industrial activities of the country are concentrated. Its coastal fringe therefore suffers ... [more ▼]

Algeria has a 1622 km long coastal strip where a large proportion of the population and the main economic and industrial activities of the country are concentrated. Its coastal fringe therefore suffers from various degradations. In particular, the Bay of Oran is housing industrial, commercial, fishing and recreational activities, where 80 % of domestic and industrial wastewaters are not purified before being discharged into the sea. Thus, the aim of the present work was to evaluate the degree of metallic contamination of coastal waters of western Algeria. Trace metals (Zn, Cu, Ni, Fe and Pb) were measured by atomic absorption spectroscopy in the dry soft tissues (gills and gonads) of the mussel Mytilus galloprovincialis Lamarck, 1819 collected during the four seasons of year 2010 in 2 sites: the highly polluted Oran harbor (S1) and Ain Defla (S2), a site distant enough from Oran and presumed little contaminated. Oran harbor was globally more contaminated than Ain Defla, especially for Fe, Zn and Ni. However, Pb levels were higher at Ain Defla with concentrations up to 3.35 ± 0.25 ppm in the gills. Metal concentrations differed between organs. Fe, Zn and Cu were more accumulated in gills (46.91 ± 1.60 ppm, 25.6 ± 1.07 ppm, 2.68 ± 0.50 ppm, respectively) compared to gonads (29.06 ± 1.07 ppm, 21.76 ± 1.46 ppm ppm, 1.44 ± 0.20 ppm, respectively). Each metal followed a seasonal trend, showing concentration peaks during winter and spring for gills and autumn for gonads. This study demonstrated the need to biomonitor the metallic contamination of Algerian coasts. But such monitoring surveys, relying on organisms, will require consensual sampling and analytical protocols to avoid hazardous conclusions due to tissue speciation and accumulation seasonality. [less ▲]

Detailed reference viewed: 6 (1 ULg)
Full Text
See detailDe niet-toepassing van de mainplévie in Maastricht
Lagasse, Benoît ULg

Conference (2016, December 16)

Detailed reference viewed: 16 (0 ULg)
Full Text
See detailInsects complex associated with the tropical basil, Ocimum gratissimum L. (Lamiaceae) in southern Benin.
Yarou, Boni Barthélémy ULg; Bokonon-Ganta, H. Aimé; Assogba Komlan, Françoise et al

Poster (2016, December 16)

Tropical basil is an aromatic leafy vegetable used for its medicinal and therapeutic properties in numerous countries in West Africa (Benin, Nigeria, Togo, etc.). In Benin, it is produced on almost all ... [more ▼]

Tropical basil is an aromatic leafy vegetable used for its medicinal and therapeutic properties in numerous countries in West Africa (Benin, Nigeria, Togo, etc.). In Benin, it is produced on almost all urban and periurban garden throughout the year for fresh market. Until now there are few or nearly no publications about the arthropod community of this specie, even less in the context of Benin. Thus, to assess this community, basil plots were mowed using a sweep net in three localities (Ouidah, Togba and Sèmè) of southern Benin. Preliminary results focus on the different insect families that colonized tropical basil in southern Benin environmental conditions. These include: Aphididae (Homoptera), Cercopidae (Homoptera), Chrysomelidae (Coleoptera), Coccinelledidea (Coleoptera), Meloidae (Coleoptera), Braconidae (Hymenoptera), Ichneumonidae (Hymenoptera), Formicidae (Hymenoptera), Vespidae (Hymenoptera), Apoidae (Hymenoptera), Reduviidae (Heteroptera), Pentatomidae (Heteroptera), Pyrgomorphidae (Orthoptera), Acrididae (Orthoptera), Syrphidae (Diptera), Diopsidae (Diptera). Among these families, there are pests: Aphis gossypii G. (Homoptera: Aphididae), Zonocerus variegatus L. (Orthoptera: Pyrgomorphidae), etc.; predators: Ischiodon aegyptius W. (Diptera: Syrphidae), Cheilomenes spp. (Coleoptera: Coccinelledidea), Rhynocoris spp. (Heteroptera: Reduviidae), etc.; parasitoids and pollinators. From this study, it appeared that there is a large diversity of families and functional groups (pests, predators, parasitoids and pollinators) associated with tropical basil . Moreover, the presence of natural enemies could be an advantage for farmers in intercropping systems. This would help reduce the use of synthetic insecticides. This result, which is a first knowledge of the insect fauna associated with tropical basil under the environmental conditions of Southern Benin, will be supplemented by a spatio temporal study to assess the variability and the dynamics of this insect fauna. [less ▲]

Detailed reference viewed: 22 (1 ULg)
Full Text
Peer Reviewed
See detailCopper toxicity on coral holobiont photosynthetic processes
Georges, Nadège; Richir, Jonathan ULg; Batigny, Antoine et al

Poster (2016, December 16)

Copper (Cu), an essential micronutrient to organisms, may become toxic when present at too high environmental concentrations. This metal remains an aquatic contaminant of concern, notably because of its ... [more ▼]

Copper (Cu), an essential micronutrient to organisms, may become toxic when present at too high environmental concentrations. This metal remains an aquatic contaminant of concern, notably because of its recent re-use as biocide in metal-based antifouling paints. The aim of this study was to monitor the physiological alterations in a zooxanthellate coral species and its endosymbionts (i.e. the coral holobiont) exposed to increasing Cu concentrations. Nubbins of Seriatopora hystrix were exposed for 8 days in 1 L intermittent respirometers to 5 nominal Cu concentrations: 0-2-5-15-50 ppb. Respirometers were maintained at 25.0±0.2°C with successive open/close cycles of 30 min. A 12/12 hours day-night light regime was applied with constant daylight intensity of 200 μmol photons m-2 s-1. Water renewal rate during the 30 min open cycles was 15 mL.min-1. The photosynthetic performances of coral endosymbionts were assessed daily with a fluorescence imaging system (imaging-PAM). At the end of the 8-days experiment, the maximal photochemical quantum yield (FV/FM) of coral nubbins had decreased by 12% and 38%, respectively, in the 15 ppb and 50 ppb treatments. This decrease was even greater for the effective photochemical quantum yield (ɸPSII) with values dropping by 41% and 54%, respectively. Cu exposure also affected the symbiosis between the coral host and its endosymbionts. Nubbins of the 15 ppb treatment slightly lightened from day 6, whilst nubbins exposed to the 50 ppb treatment lightened from day 3, and started to bleach from day 6. The analysis of nubbins’ primary productivity did not coincide with the above observations, the oxygen production within each respirometer remaining relatively constant during the overall experiment for all treatments. This unexpected observation may be the sign of a compensation mechanism. In conclusion, Cu affected the photosynthetic processes of S. histrix within 8 days from relevant environmental concentrations of 15 ppb. The exposure of corals to toxic chemicals thus has to be considered as an additional stressor to, e.g., ocean acidification or elevated temperature, which may disturb their ecophysiology and lead to bleaching. [less ▲]

Detailed reference viewed: 12 (1 ULg)
Full Text
See detailTuta absoluta (Lepidoptera: Gelechiidae) ability to develop on potato tubers
Bawin, Thomas ULg; De Backer, Lara ULg; Yarou, Boni Barthélémy ULg et al

Poster (2016, December 16)

Tuta absoluta (Lepidoptera: Gelechiidae) is a widespread pest that threatens commercial production of solanaceous crops. Larvae feed on the mesophyll of all aerial parts of the plants resulting in ... [more ▼]

Tuta absoluta (Lepidoptera: Gelechiidae) is a widespread pest that threatens commercial production of solanaceous crops. Larvae feed on the mesophyll of all aerial parts of the plants resulting in significant yield losses and cosmetic damages.It is classically assumed that underground plant parts are not affected but larval development on potato tubers has recently been suspected. However, this assumption is poorly supported in the literature. Potato tubers might represent an unsuspected mean of persistence and dispersal in agricultural environments.Oviposition tests were here conducted using dormant and active (sprouts less than 5 cm) potato tubers in net cages. Oviposition only occurred on the sprouts of active tubers, supporting larval growth until adult emergency. Tuber dissection revealed burrows starting from sprouts inside the flesh. Additional fitness assays were conducted on non-sprouted tubers and revealed that first instar larvae were able to enter the skin and create burrows, living inside and feeding on potato flesh, although none of them survived. [less ▲]

Detailed reference viewed: 15 (1 ULg)
Full Text
See detailRelationship between jaw morphology, bite performance and diet in Serrasalmidae (Characiformes, Teleostei)
Huby, Alessia ULg; Lowie, Aurélien; Herrel, Anthony et al

Conference (2016, December 16)

Serrasalmidae are mainly known for “piranhas” and their negative reputation of ferocious predatory fishes. A recent study demonstrated that the piranha $Serrasalmus rhombeus£ had an extreme bite force ... [more ▼]

Serrasalmidae are mainly known for “piranhas” and their negative reputation of ferocious predatory fishes. A recent study demonstrated that the piranha $Serrasalmus rhombeus£ had an extreme bite force that is even proportionally greater than that of the white shark. However, these sharp teeth fishes represent only a minority of Serrasalmidae. Other serrasalmid species (pacus and myleus) feed on plants, fruits or seeds and their bite force and feeding capacities are still uninvestigated. In the present research, in vivo bite forces were measured and compared according to jaw morphology in ten species of Serrasalmidae including six herbivorous and four carnivorous species. The Bite Force Quotient (BFQ) was calculated for each individual to compare the jaw strength across species. The results of the analysis showed that species feeding on fins and fish flesh have a significant greater bite force than species feeding on plants, fruits or seeds. This difference can be explained by the larger adductor mandibulae muscle in carnivorous species which have comparatively longer and higher skull than herbivorous species. In addition, there is a significant difference in the lower jaw morphology between piranhas and pacus and relatives. The piranha species have longer lower jaws than pacus and myleus species which have shorter and higher lower jaws. This study shows that the Serrasalmidae family regroups remarkable biters whose bite performance is mostly related to diet. [less ▲]

Detailed reference viewed: 41 (11 ULg)
Full Text
Peer Reviewed
See detailExploring a Mediterranean mesozooplankton 13 year time-series.
Fullgrabe, Lovina; Richir, Jonathan ULg; Batigny, Antoine et al

Poster (2016, December 16)

Zooplankton plays diverse crucial roles within the marine ecosystem and can also be used as bio- indicator of climate changes since it is very sensitive to environmental changes. Therefore it is essential ... [more ▼]

Zooplankton plays diverse crucial roles within the marine ecosystem and can also be used as bio- indicator of climate changes since it is very sensitive to environmental changes. Therefore it is essential to consider long-term plankton series. Given the analysis of plankton samples is time- consuming, it requires an effective and rapid analytical method. We have used in this work a supervised learning approach adapted for the semi-automatic classification of digital images of the mesozooplankton of the Bay of Calvi (Corsica, France) by using the Zoo/PhytoImage software. Together with a 11-years long zooplankton time-series, a set of nine environmental variables were monitored in order to identify controlling factors and determine whether the communities were sensitive to global environmental changes. The main components of the mesozooplankton community were characterized by both seasonal and inter-annual variability. Additionally, variation of holoplankton and meroplankton differentiated one from each other. The holoplanktonic community could be split into two subgroups according to its variation in function of the environment: cladocerans and appendicularians, and to a lesser extent, copepods on one hand, and cnidarians, chaetognathes and thaliaceans, on the other hand. Regarding inter-annual variation, one year (2007) showed particularly low production of total zooplankton which was also the case for all the different holoplanktonic taxa. Accounting for that phenomenon were identified some potentially underlying environmental factors. Finally, although water temperature increased significantly over the last years along with the frequency of marine heat wave events, no evident change in the global zooplankton composition was observed yet. [less ▲]

Detailed reference viewed: 14 (2 ULg)
Peer Reviewed
See detailFeeding ecology of metamorphic and paedomorphic palmate newts (Lissotriton helveticus) in Larzac
Didaskalou, Emilie; Lejeune, Benjamin ULg; Lepoint, Gilles ULg et al

Poster (2016, December 16)

Detailed reference viewed: 14 (1 ULg)
Full Text
See detailEnergy Dissipation in Saturn’s Magnetotail: A Comparative Magnetotail Approach
Yao, Zhonghua ULg; Coates, Andrew; Ray, Licia et al

Poster (2016, December 16)

Detailed reference viewed: 14 (3 ULg)
Full Text
See detailHead shape disparity of the cod icefishes Trematominae (Notothenioidei, Teleostei)
Frederich, Bruno ULg; Heindler, Franz M.; Dettai, Agnès et al

Poster (2016, December 16)

The suborder Notothenioidei (Teleostei) has undergone a remarkable adaptive radiation in the Southern Ocean. Within this suborder, the subfamily Trematominae is endemic to Antarctic waters and represents ... [more ▼]

The suborder Notothenioidei (Teleostei) has undergone a remarkable adaptive radiation in the Southern Ocean. Within this suborder, the subfamily Trematominae is endemic to Antarctic waters and represents a dominant component of the shelf fish fauna. After recent advances in molecular phylogenetics, 14 species of Trematomus are currently recognized (including Pagothenia and Cryothenia spp.) comprising both considerable morphological and ecological diversity. Here, we aim to illustrate the main axes of shape variation in Trematomus and explore the evolution of their morphology. A dataset of 96 specimens representing 10 species of Trematomus from the collection of the Natural History Museum of Paris was assembled, and landmark-based geometric morphometrics was applied to quantify head shape disparity. Regular regression analysis revealed significant interspecific allometry while a low percentage of shape variation was explained by size (R2 = 0.11; P < 0.001). Main shape variation across species was explored using a principal component (PC) analysis on shape variables. Two groups diverged along PC1: (1) T. bernacchii, T. hansoni, T. pennellii and T. tokarevi have short cephalic profiles with larger cheeks (lowest values along PC1); and (2) T. lepidorhinus, T. eulepidotus and T. newnesi show lengthened cephalic profiles with larger eyes (highest values along PC1). Trematomus scotti differed from all other species mainly along PC3 indicating more elongated cheeks. Phenogram based on Procrustes shape distances will be compared to molecular phylogenetic trees and morphometric data will be mapped onto phylogenetic trees in order to illustrate the mode of phenotypic diversification of Trematomus during evolution. [less ▲]

Detailed reference viewed: 29 (0 ULg)
Full Text
See detailWho would want to live in there? A history of Posidonia oceanica detritus accumulations, the associated invertebrate community, and its food web…
Remy, François ULg; Michel, Loïc ULg; Darchambeau, François ULg et al

Conference (2016, December 16)

Most seagrasses are rarely consumed directly by herbivore organisms. The "detrital pathway" thus represents a potentially important way of transfer of the seagrasses production to the coastal food webs ... [more ▼]

Most seagrasses are rarely consumed directly by herbivore organisms. The "detrital pathway" thus represents a potentially important way of transfer of the seagrasses production to the coastal food webs. The case of Posidonia oceanica is particularly interesting since up to 90% of its foliar primary production may constitute extensive and highly dynamic exported litter accumulations. Preliminary studies concerning these detritus accumulations suggest that an abundant community of vagile macro invertebrates (size > 500μm) lives inside them. We characterized for the first time this community in an exhaustive way (multi-site, seasonal and multi-year study), we linked the observed density and diversity variations to environmental parameters, but also described the trophic web these invertebrates compose. We sampled an abundant (up to 5000 organisms/m²) community composed of 115 species. We showed that crustaceans were massively dominant, followed by annelids and mollusks, and that one single amphipod species Gammarella fucicola represented from 20 to 85% of the whole sampled community. Observed variations appeared to be mostly linked to litter oxygen water concentration in a very species specific way. Most species were linked to no measured environmental parameter at all, but several dominant species were demonstrated (observation and in situ experimentation) to be linked positively or negatively to litter oxygen concentration. The described food web was composed of more than 3 trophic levels, indicating the presence of a trophic web composed of primary consumers/detritivore species, of omnivore species, but also of first and second order predators, each level occupying a distinct isotopic niche. From a specific point of view, we highlighted several different feeding preferences, with SIAR mixing model runs indicating that some species feed mostly on detrital material, other species feed on a mixture of detrital and algal material, other species feed on both animal and vegetal material and finally predator species feed exclusively on animal material. The fact that P. oceanica detritus constituted a non-negligible food source for some dominant species confirmed the importance of this macrofauna community as a key transfer link of seagrass organic matter from P. oceanica to the coastal food webs. [less ▲]

Detailed reference viewed: 22 (4 ULg)
Full Text
See detailMulti-GNSS relative positioning with Galileo, BeiDou and GPS
Deprez, Cécile ULg; Warnant, René ULg

Conference (2016, December 16)

For several years, the number of Global Navigation Satellite Systems (GNSS) has been increasing, opening new perspectives in the field of precise positioning. Particularly, the European system, Galileo ... [more ▼]

For several years, the number of Global Navigation Satellite Systems (GNSS) has been increasing, opening new perspectives in the field of precise positioning. Particularly, the European system, Galileo, is experiencing a prompt expansion with the launch, in 2015 and 2016, of 8 satellites belonging to the new Full Operational Capability (FOC) generation. Broadcasting new signals, with new modulations, the first studies addressing this system reveal promising level of precisions on both code and carrier phase observables. Yet, Galileo is far from being the only GNSS undergoing a noteworthy revolution. Alternatively, the Chinese program BeiDou, still in a developing phase, as well as the American GPS, currently undergoing a modernization of its signals, also knew major progress these last two years. Indeed, 7 new satellites have reached the initial BeiDou constellation, bringing to 20 the number of active satellites. Among them, 5 spacecraft inaugurated the Phase III generation, broadcasting the new B1, B2 and B3 signals. Regarding GPS, the block IIF, made of L5 signal broadcasting satellites, kept expanding but at a less steep rate than BeiDou or Galileo. In this study, we first estimated the individual precisions of each signals broadcast by the aforementioned GNSS. For this purpose, we created two short baselines of approximatively 5 meters between similar type receivers. We combined their measurements to form double differences, leaving in the position equations only multipath and receiver noise. The great expectations regarding Galileo’s quality turned into affirmations as long as we studied this system. As a matter of a fact, the code pseudoranges values of the 4 signals of Galileo we have considered (E1, E5a, E5b, E5a+b) presented outstanding precisions (from 5 to 17 centimetres on code pseudoranges with an elevation mask of 10 degrees) when compared to GPS (from 12 to 20 centimetres on codes pseudoranges) and BeiDou (from 26 to 40 centimetres for codes and for phases) in identical conditions. Even though the precision of Galileo observables is noticeable, the influence of the poor geometry of the satellite constellation degrades in a significant way the resulting precision of the position estimated, no matter the recent increase in the number of satellites. Indeed, in this incomplete constellation, the addition of new satellites results in longer visibility period but not in larger number of satellites observed at a single epoch. Combining Galileo with GPS or BeiDou is a way to solve this issue, as the three systems have been designed to be compatible. Therefore, multi-GNSS relative positioning based on overlapping frequencies should entail better accuracy and reliability in position estimations. However, the differences between satellite systems induce inter-system biases (ISBs) inside the multi-GNSS equations of observation. The overlapping frequencies of these GNSS are the L1 and L5 frequencies of GPS with the E1 and E5a signals of Galileo, respectively. As far as BeiDou is concerned, the B2 signal of emitted by the Phase II BeiDou satellites corresponds to the E5b frequency of Galileo. Regarding the new Phase III satellites, the B2 frequencies will correspond to the Galileo E5a+b signal and B1 of BeiDou will be compatible with E1 of Galileo and GPS. The combined use of these overlapping frequencies in zero baseline double differences (ZB DD) based on a unique pivot satellite is employed to resolve ISBs. This model removes all the satellite- and receiver-dependent error sources by differentiating and the zero baseline configuration allows atmospheric and multipath effects elimination. We conducted this study on the L1/E1, L5/E5a, B1(phase II)/E5b overlapping frequencies. Our receivers were not able to receive the phase III signals of BeiDou satellites. An analysis of the long-term stability of ISBs (GPS- Galileo and Galileo - BeiDou) was conducted on various pairs of receivers over large time spans. The possible influence of temperature variations inside the receivers over ISB values was also investigated. Our study is based on the 6 multi-GNSS receivers (2 Septentrio PolaRx4, 1 Septentrio PolaRxS, 1 Septentrio PolaRx5 and 2 Trimble NetR9) installed on the roof of our building in Liege. The estimated ISBs are then used as corrections in the multi- GNSS observation model and the resulting accuracy of multi-GNSS positioning is compared to GPS, Galileo and BeiDou standalone solutions. [less ▲]

Detailed reference viewed: 46 (3 ULg)
See detailDetermining the Substorm Onset Instability Using Ground and Space-Based Measurements
Rae, Jonathan; Watt, Clare; Murphy, Kyle et al

Poster (2016, December 16)

Detailed reference viewed: 12 (1 ULg)
Peer Reviewed
See detailLabels du patrimoine culturel, ordres juridiques et effectivité de la norme
Desseilles, François ULg

Conference (2016, December 15)

Detailed reference viewed: 21 (1 ULg)
Full Text
Peer Reviewed
See detailAjustement des marqueurs d’insertion des tubes endotrachéaux selon l’âge gestationnel.
RIGO, Vincent ULg; Fayoux, Pierre

in Baud, Olivier; Saliba, Elie (Eds.) Congrès SFN-JFRN 2016, livre des communications (2016, December 15)

Introduction et objectifs: le positionnement adéquat d’un tube endotrachéal (TET) peut être difficile en raison de la marge de manœuvre limitée associée aux faibles distances laryngo-trachéales du ... [more ▼]

Introduction et objectifs: le positionnement adéquat d’un tube endotrachéal (TET) peut être difficile en raison de la marge de manœuvre limitée associée aux faibles distances laryngo-trachéales du prématuré. Les marqueurs distaux censés faciliter l’évaluation de ce positionnement ne sont pas standardisés entre les fabriquants, et le marquage généralement unique par taille de tube ne tient pas compte de la croissance associée à l’âge gestationnel. L’objectif de l’étude est de décrire les distances entre les cordes vocales (CV) et la moitié de la trachée en fonction de l’âge gestationnel et proposer des nouveaux marquages adaptés. Méthodes : la moitié de la longueur de la trachée ajoutée à la hauteur de la lame postérieure du cricoïde permet d’estimer la distance entre les CV et la moitié de la trachée (CV-MiTr). Ces longueurs sont issues à postériori d’une base de données prospective reprenant les distances détaillées du larynx et de la trachée mesurées lors d’autopsies de fœtus et nouveau-nés exempts de malformation des voies respiratoires (Fayoux et coll., Journal of anatomy 2008). Une corrélation est établie avec l’âge gestationnel. Résultats : les données proviennent de 121 patients. Il existe une corrélation linéaire entre la distance CV-MiTr et l’AG (r=0,91; y=2,6043+0,6275x; p<.0001). Des marqueurs d’insertion positionnés à 17,7; 18,9; 20,8; 22,7; 24,6 et 26,4 mm correspondraient à des AG de 24, 26, 29, 32, 35 et 38 semaines respectivement. Ils pourraient être indiqués par des lignes de couleurs contrastées. Conclusion : la relation linéaire entre la distance CV-mi-trachée et l’AG donne l’opportunité de revoir les marqueurs d’insertion des tubes endotrachéaux pour les patients les plus petits. Ces nouveaux marqueurs devraient être comparés cliniquement à ceux actuellement en usage avant d’être généralisés. [less ▲]

Detailed reference viewed: 14 (1 ULg)
Full Text
Peer Reviewed
See detailCathéters pour instillation moins invasive de SURFACTANT : une étude de simulation
RIGO, Vincent ULg; Debauche, Christian; Maton, Pierre et al

in Baud, Olivier; Saliba, Elie (Eds.) Congrès JFN-JFRN 2016, livre des communications (2016, December 15)

Introduction et objectifs : l’instillation trachéale de surfactant par un cathéter fin (Less invasive surfactant therapy- LIST) chez le prématuré sous CPAP permet de diminuer la morbidité respiratoire ... [more ▼]

Introduction et objectifs : l’instillation trachéale de surfactant par un cathéter fin (Less invasive surfactant therapy- LIST) chez le prématuré sous CPAP permet de diminuer la morbidité respiratoire. Plusieurs cathéters sont décrits à cette fin : une sonde oro-gastrique insérée avec (LISA-Köln, K) ou sans pince de Maggil (Take Care- Ankara, A), un cathéter veineux de 13 cm (MIST- Hobart, H), un cathéter d’angiographie de 30 cm (Stockholm, S) ou un cathéter ombilical fixé à un stylet d’intubation utilisé localement (Liège, L). L’objectif de l’étude est d’évaluer l’efficacité de ces techniques en prenant l’INSURE (Intubation-Surfactant-Extubation) comme référence. Intervention : 20 néonatologues travaillant dans 4 services ayant des stratégies d’administration du surfactant différentes ont participé. Ils ont simulé ces 6 techniques sur deux têtes d’intubation de difficulté croissante. L’efficacité de l’intervention est évaluée par le taux d’échec et la durée de procédure mesurée sur vidéo. Chaque intervenant apprécie la facilité d’utilisation sur une échelle de 1 à 9 (Difficile> facile). Résultats : Pour le premier modèle, les durées médianes de procédure pour Köln et Ankara sont allongées [K: 21s (IQR 17-24); A: 23s (15-42); H: 10s (8-16); S: 12s (10-22); L (10-20); INSURE: 14s (11-21); p<.0001]. Pour le second modèle, seul Liège permet une durée de procédure similaire à l’INSURE [K: 32s (25-44); A: 39s (27-95); H: 34s (27-46); S: 37s (29-42); L: 24s (15-35); INSURE: 24s (17-32); p<.002]. Les taux d’échec des méthodes LIST sont similaires entre eux (de 3 à 8/ 40 essais), mais supérieurs à celui de l’INSURE (0/40). Köln et Ankara sont considérés comme plus difficiles [scores de facilité : K: 5 (4-6); A: 3 (2-4); H: 6,5 (6-7); S: 7 (4-8); L: 8 (6,5-8); INSURE: 7 (6-8); p<.001]. Conclusions : les cathéters plus rigides sont plus efficaces et perçus comme plus simples d’utilisation. L’insertion d’un cathéter guidé et incurvé pourrait être plus rapide dans les cas difficiles. [less ▲]

Detailed reference viewed: 12 (0 ULg)
Full Text
See detailVibrio spp chez l’Homme - Vibrio spp bij de mens
MELIN, Pierrette ULg; SACHELI, Rosalie ULg

in POLET, Marie (Ed.) Vibrio spp dans l’alimentation et chez l’Homme - Formation (2016, December 15)

Detailed reference viewed: 11 (1 ULg)
See detailIntroduction à la perspective en première personne : le cas de l’anorexie
Englebert, Jérôme ULg

Conference (2016, December 15)

La distinction des perspectives en première et troisième personnes est un apport récent et décisif de la phénoménologie à la psychopathologie (Parnas, Sass & Zahavi, 2012). La perspective en troisième ... [more ▼]

La distinction des perspectives en première et troisième personnes est un apport récent et décisif de la phénoménologie à la psychopathologie (Parnas, Sass & Zahavi, 2012). La perspective en troisième personne, campée par les dernières versions du DSM ou par l’evidence based medicine, consiste en l’attribution depuis une position externe de signes cliniques repérés indépendamment du ressenti exprimé par le patient. L’exemple typique de ces signes est le délire et l’hallucination du schizophrène. Ces symptômes cristallisent les difficultés qu’éprouve le sujet à se reconnaitre affecté du trouble (l’anosognosie), et ce point est considéré par les modèles dominants comme une cible thérapeutique prioritaire. La visée de ces techniques, orthopédiques et psycho-éducatives, est que le patient parvienne à « reconnaitre » sa maladie. Selon cette perspective en troisième personne, il est attendu qu’il adopte, intègre la position propre à son évaluateur, et externe à sa subjectivité intrinsèque. La démarche opposée, celle de la prise en considération d’une perspective en première personne, interroge, considère et concentre son attention sur l’expérience subjective exprimée par le patient. Si l’on reprend l’exemple princeps de la schizophrénie, ce sont la « perte de l’évidence naturelle » des choses, un « trouble du sens commun » ou un « sentiment de diminution du soi » que verbalisent les patients. Ces signes cliniques, révélant l’expérience du soi, deviennent l’élément psychopathologique structurant et mettent en évidence une manière d’être-au-monde, ici schizophrénique. Le pari de cette journée d’étude consacrée à l’anorexie est de chercher à appliquer ce passage vers une perspective compréhensive en première personne pour les sujets affectés de ce trouble. Des travaux pionniers en la matière, bien que ne se réclamant pas de la phénoménologie, sont certainement ceux du psychiatre éthologue liégeois Albert Demaret (1979). Celui-ci, suggère, de façon quelque peu déconcertante, de ne plus focaliser l’attention prioritairement sur l’aspect purement médical relatif à la perte de poids et au refus alimentaire. Le comportement qui retient particulièrement son attention est l’altruisme (souvent alimentaire), qu’il considère comme « la composante la plus fondamentale du syndrome » (p. 152). Outre le fait de révéler les composantes adaptatives du trouble, son étonnant modèle permet d’entrer en consonance avec le discours des patients anorexiques qui, bien souvent, ne perçoivent pas leur minceur (mécanisme de déni) ou expriment que leur problématique ne se situe pas, selon eux, dans leur sous-alimentation. L’anosognosie anorexique et cet effroyable tendance à se priver d’alimentation au risque de mettre sa vie en danger, si l’on ouvre la porte à la perspective en première personne – si on laisse la parole au sujet –, laissent la place à un besoin (dont l’excessivité peut être reconnue) de s’occuper des autres, de les nourrir, mais aussi une hyper-attention au regard qu’on leur porte. L’investissement émotionnel et corporel des relations est souvent présenté comme étant insatisfaisant, voire comme étant l’élément moteur de leur mal-être. Ce pas de côté de la vision omnisciente du médical, assumant une remise en cause du pouvoir de domination qu’entraine la perspective en troisième personne, se révèle être un outil psychothérapeutique tout à fait pertinent. Il désacralise le problème de l’anosognosie, remet en cause le déni (ce mécanisme devient également celui de l’entourage de l’anorexique qui ne peut percevoir le surinvestissement altruiste), et ouvre la voie à une perspective intersubjective, co-construite. Cette journée d’étude a pour ambition de mettre en lumière cette préoccupation pour l’éprouvé anorexique, évoquer les modes de communication de ces patients et laisser place au discours qu’ils ont souvent du mal à livrer. Il se révèle que les apports de disciplines comme la philosophie ou l’anthropologie, ainsi que ceux de la pratique clinique sont des détours essentiels à ce programme d’étude. Nous discuterons également du symptôme anorexique lorsqu’il est secondaire à un psychotraumatisme (quelle place cette tendance à la restriction vient combler dans l’expérience de vie du sujet traumatisé). Cette journée est ouverte tant aux praticiens de terrain et personnes intéressées par les matières cliniques qu’aux chercheurs universitaires en sciences humaines. [less ▲]

Detailed reference viewed: 60 (6 ULg)
Full Text
Peer Reviewed
See detailIntegrating Non-Collocated Well and Geophysical Data to Capture Lithological Heterogeneity at a Managed Aquifer Recharge and Recovery Site
Gottschalk, Ian; Hermans, Thomas ULg; Caers, Jef et al

Poster (2016, December 15)

Aquifer recharge and recovery (ARR) is the process of enhancing natural groundwater resources and recovering water for later use by constructing engineered conveyances. Insufficient understanding of ... [more ▼]

Aquifer recharge and recovery (ARR) is the process of enhancing natural groundwater resources and recovering water for later use by constructing engineered conveyances. Insufficient understanding of lithological heterogeneity at ARR sites often hinders attempts to predict where and how quickly infiltrating water will flow in the subsurface, which can adversely affect the quality and quantity of available water in the ARR site. In this study, we explored the use of electrical resistivity tomography (ERT) to assist in characterizing lithological heterogeneity at an ARR site, so as to incorporate it into a flow and contaminant transport model. In this case, we had non-collocated well core log data and ERT data from a full-scale ARR basin. We compared three independent methods for producing conditional lithology-resistivity probability distributions: 1) a search template to relate the nearest logged well lithologies with ERT resistivity panels, given search criteria; 2) a maximum likelihood estimation (MLE) to match bimodal normal distributions to the histogram of each ERT line; and 3) variogram-based lithology indicator simulations constrained to well data. Each approach leverages Bayes’ Rule to estimate lithology probability given electrical resistivity. The simplest approach (method 1) yields an erroneous conditional probability function where sand dominates the conditional probability at nearly all resistivities, due in part to the strong presence of sand in the wells nearest the ERT lines. The approaches using MLE and lithology simulations (methods 2 and 3) produce similar, more realistic lithofacies probability functions. The range of resistivities where clay and sand overlap differs between methods 2 and 3: ranging between 100 and 200 ohm-m for method 2, and between 30 and 50 ohm-m for the method 3. These differences affect the posterior lithology distributions in multiple point geostatistical (MPS) simulations, and in turn, predictions of flow from models which integrate these results. To test the models, we can compare measured breakthrough times of recharged water at the site to groundwater flow simulation results using the lithofacies models created by each method. The methods described here can inform the integration of non-collocated geophysical data into a variety of applications. [less ▲]

Detailed reference viewed: 15 (1 ULg)
Full Text
Peer Reviewed
See detailInstillation de surfactant chez le prématuré en respiration spontanée : méta-analyse
RIGO, Vincent ULg; LEFEBVRE, Caroline ULg; BROUX, Isabelle ULg

in Baud, Olivier; Saliba, Elie (Eds.) Congrès SFN-JFRN 2016, livre des communications (2016, December 15)

Justification: Lors du traitement par surfactant dit moins invasif (Less invasive surfactant therapy- LIST), le produit est instillé dans la trachée par un cathéter fin alors que l’enfant respire ... [more ▼]

Justification: Lors du traitement par surfactant dit moins invasif (Less invasive surfactant therapy- LIST), le produit est instillé dans la trachée par un cathéter fin alors que l’enfant respire spontanément sous CPAP. Différentes études ont donné des résultats variables mais encourageants. L’objectif de cette méta-analyse est de comparer le devenir respiratoire des prématurés traités par LIST avec celui de ceux traités par administration de surfactant par un tube endotrachéal. Méthodes : les études randomisées contrôlées (ERC) sont recherchées dans les bases de données et dans les références d’articles pertinents. Les devenirs respiratoires (dysplasie broncho-pulmonaire (DBP), décès ou DBP, échec précoce de CPAP, nécessité de ventilation invasive) et les morbidités classiques sont reprises de ces études. Pour chaque morbidité, le risque relatif (RR) des données mutualisées est calculé avec une analyse de Mantel-Haenszel à modèle d’effet aléatoire. Le RR est également calculé pour des sous-groupes établis selon l’intervention contrôle. Résultats : six ERC évaluent le LIST : 4 le comparent à l’INSURE (Intubation-Surfactant-Extubation), et les 2 autres à l’intubation (immédiate ou après maintient en CPAP) avec surfactant. Les méthodes LIST diminuent les risques de DBP (RR= 0,71 (0,52-0,99) ; nombre nécessaire à traiter NNT= 21), et de décès ou DBP (RR= 0,7 (0,58- 0,94) ; NNT= 15). L’échec précoce de CPAP et le recours à la ventilation invasive sont également réduits (RR= 0,67 (0,53-0,84) ; NNT= 8 et RR= 0,69 (0,53- 0,88) ; NNT= 6). Comparé à l’INSURE, le LIST diminue le risque combiné de décès ou DBP (RR= 0,63 (0,44-0,92) ; NNT= 11), et d’échec précoce de CPAP (RR=0,71 (0,53-0,96) ; NNT= 11). Les autres morbidités néonatales classiques sont similaires pour les différents groupes. Conclusions : une stratégie d’administration dite moins invasive de surfactant diminue les risques de morbidité respiratoire à moyen terme (DBP, décès ou DBP) et le recours à la ventilation invasive. Cette approche semble sure mais les données de suivi à long terme sont insuffisantes. [less ▲]

Detailed reference viewed: 22 (1 ULg)
See detailPrésentation des activités du PCNSW
Legrain, Xavier ULg; Michel, Brieuc ULg; Roda, Mathilde ULg et al

Conference (2016, December 14)

Detailed reference viewed: 9 (0 ULg)
Full Text
Peer Reviewed
See detailQualité des médicaments antipaludéens et caractéristiques des pharmacies des territoires périurbains de Kinshasa
Mavungu Landu, Don Jethro ULg; Liégeois, Sophie; Manzambi Kuwekita, Joseph ULg et al

Poster (2016, December 14)

Contexte: Le paludisme causé par le Plasmodium falciparum demeure un problème majeur de santé publique. Le traitement avec des antipaludiques de bonne qualité est une composante importante dans le ... [more ▼]

Contexte: Le paludisme causé par le Plasmodium falciparum demeure un problème majeur de santé publique. Le traitement avec des antipaludiques de bonne qualité est une composante importante dans le contrôle de cette maladie. Cependant en Afrique centrale, plus de 25% des médicaments serait contrefaits ou de qualité inférieure, situation qui serait encore plus dramatique dans les territoires périurbains. Méthode: Dans le contexte ci-mentionné, une étude préliminaire et prospective a été menée dans la zone de santé de Mont Ngafula 1 située dans les territoires périurbains de la Ville de Kinshasa durant la période allant du 22 février au 17 mars 2016. Treize échantillons de poudre pour suspension d’artéméther et de luméfantrine ont été collectés. L’analyse de la qualité de ces médicaments a été réalisée au moyen de méthodes séparatives génériques utilisant la technique de chromatographie liquide à haute performance couplé à un détecteur à barrettes de diodes. Une caractérisation a été également effectuée dans 127 établissements pharmaceutiques sur base des normes édictées par le Ministère de la Santé Publique congolais. Résultats: Les résultats des analyses des échantillons d’antimalariques (ou antipaludéens) montre que presque la moitié des poudres pour suspension d’artéméther et de luméfantrine ne contenait pas la concentration prévue en artéméther et/ou en luméfantrine. Par ailleurs, le résultat des observations évoque qu’aucun établissement pharmaceutique ne respecte l’ensemble des normes du Ministère de la Santé Publique. [less ▲]

Detailed reference viewed: 32 (1 ULg)
See detailQuadratic reformulations of nonlinear binary optimization problems
Crama, Yves ULg

Conference (2016, December 14)

Detailed reference viewed: 11 (0 ULg)
Peer Reviewed
See detailElectrical Resistivity Monitoring of Heat Tracer to Characterize Lab-Scale Hydraulic Conductivity Distributions
Adetokunbo, Peter; Hermans, Thomas ULg; Oware, Erasmus

Poster (2016, December 14)

Knowledge of the spatial variations of hydraulic conductivity (K) is crucial to almost every hydrogeological investigation. The representative scale of K estimates from traditional slug and pumping tests ... [more ▼]

Knowledge of the spatial variations of hydraulic conductivity (K) is crucial to almost every hydrogeological investigation. The representative scale of K estimates from traditional slug and pumping tests are, however, inadequate to accurately predict hydrogeological processes. There is increasing interest in the application of electrical resistivity tomography (ERT) to quantify spatially continuous K variations. ERT estimation of high-resolution K distributions, however, requires continuous injection of saline tracer (ST) into an aquifer over an extended period, which is feasible but impractical. Here, we present electrical resistivity thermography (ERTh) to evaluate the potential application of time-lapse ER monitoring of heat tracer (HT) to characterize high-resolution K architectures. Unlike ST, long term HT experiments are comparatively easier to manage and repeatable with minimal environmental impact. We estimate K variations via petrophysical coupling of flow and heat transport with joint time-lapse ER and discrete multi-level temperature breakthrough curves. We illustrate the strategy with a 2-D lab-scale sandbox experiment. To construct the heterogeneous field, three lenses with high-K properties with each consisting of gravel, coarse sand, and a mixture of coarse and fine sand, were created within a background of comparatively low-K fine sand. The experiment involved continuous injection and extraction of heat, respectively, at the left and right boundaries of the lab-scale aquifer. We simultaneously performed time lapse ER monitoring of the heat transport and temperature measurements at four discrete multi-levels near the heat extraction well. Results of the coupled inversions demonstrate that ER monitoring of heat tracer provides a unique opportunity to characterize high-resolution spatially continuous K variations, which seems more practical for field applications in contrast to that of the traditional ST. [less ▲]

Detailed reference viewed: 19 (3 ULg)
Full Text
See detailThe complex behavior of the satellite footprints at Jupiter: the result of universal processes?
Bonfond, Bertrand ULg; Grodent, Denis ULg; Badman, Sarah V. et al

Poster (2016, December 14)

At Jupiter, some auroral emissions are directly related to the electromagnetic interaction between the moons Io, Europa and Ganymede on one hand and the rapidly rotating magnetospheric plasma on the other ... [more ▼]

At Jupiter, some auroral emissions are directly related to the electromagnetic interaction between the moons Io, Europa and Ganymede on one hand and the rapidly rotating magnetospheric plasma on the other hand. Out of the three, the Io footprint is the brightest and the most studied. Present in each hemisphere, it is made of at least three different spots and an extended trailing tail. The variability of the brightness of the spots as well as their relative location has been tentatively explained with a combination of Alfvén waves’ partial reflections on density gradients and bi-directional electron acceleration at high latitude. Should this scenario be correct, then the other footprints should also show the same behavior. Here we show that all footprints are, at least occasionally, made of several spots and they all display a tail. We also show that these spots share many characteristics with those of the Io footprint (i.e. some significant variability on timescales of 2-3 minutes). Additionally, we present some Monte-Carlo simulations indicating that the tails are also due to Alfvén waves electron acceleration rather than quasi-static electron acceleration. Even if some details still need clarification, these observations strengthen the scenario proposed for the Io footprint and thus indicate that these processes are universal. In addition, we will present some early results from Juno-UVS concerning the location and morphology of the footprints during the first low-altitude observations of the polar aurorae. These observations, carried out in previously unexplored longitude ranges, should either confirm or contradict our understanding of the footprints. [less ▲]

Detailed reference viewed: 24 (6 ULg)
Full Text
Peer Reviewed
See detailHealth literacy en Belgique : diagnostic et pistes d’interventions
Bragard, Isabelle ULg; Pétré, Benoît ULg; Coucke, Philippe ULg et al

Conference (2016, December 14)

Detailed reference viewed: 27 (3 ULg)
Full Text
Peer Reviewed
See detailHow tree architecture varies across coexisting tropical tree species and relate to ecological strategies?
Loubota Panzou, Grâce Jopaul ULg; Ligot, Gauthier ULg; Loumeto, Jean-Joël et al

Conference (2016, December 14)

Architecture refers to the overall shape of a tree and the spatial position of its components. Tree height determines the position in the forest canopy and access to light, while the amount and spatial ... [more ▼]

Architecture refers to the overall shape of a tree and the spatial position of its components. Tree height determines the position in the forest canopy and access to light, while the amount and spatial distribution of the foliage depend on the depth and the width of the crown. The aim of this study is to understand how tree architecture varies across coexisting tropical tree species and relates to ecological strategies. Forty five coexisting tree species were sampled in the semi-deciduous forests of Northern Congo. Species were classified according to ecological strategies, specifically regeneration guilds: shade bearers (27 species), non-pioneers light demanding (14 species) and pioneers (4 species). For each species, 14–72 trees (968 trees in total) were measured over a large range of diameter (10–162 cm). At the tree level, we measured the diameter (D in cm), height (H in m), crown radius (Cr in m) and crown depth (Cd in m) and crown exposure index (CEI) was visually estimated. At species level, architectural traits were estimated at juvenile tree with diameter of 10 cm (H10, Cr10 and Cd10) and at adult stature with maximum diameter (Hmax, Crmax and Cdmax), life history traits (dispersal mode, phenology and regeneration guild) and functional traits (wood density and light requirement) were obtained. Our results showed a significant variation in tree allometry between coexisting species. The interspecific variation was related to light requirement (H-D allometry), dispersal mode (Cr-D allometry) and liana infestation (Cd-D allometry). Large-statured tree species were light demanding, deciduous and wind dispersed, while small-statured tree species were evergreen, dense wooded, and animal dispersed. Architectural traits strongly differed between regeneration guilds. [less ▲]

Detailed reference viewed: 48 (9 ULg)
Full Text
See detailInitial observations of Jupiter’s aurora from Juno’s Ultraviolet Spectrograph (Juno-UVS)
Gladstone, Randy; Versteeg; Greathouse, Thomas et al

Conference (2016, December 13)

Juno-UVS is an imaging spectrograph with a bandpass of 70<λ<205 nm. This wavelength range includes important far-ultraviolet (FUV) emissions from the H2 bands and the H Lyman series which are produced in ... [more ▼]

Juno-UVS is an imaging spectrograph with a bandpass of 70<λ<205 nm. This wavelength range includes important far-ultraviolet (FUV) emissions from the H2 bands and the H Lyman series which are produced in Jupiter’s auroras, and also the absorption signatures of aurorally-produced hydrocarbons. The Juno-UVS instrument telescope has a 4x4 cm2 input aperture and uses an off-axis parabolic primary mirror. A flat scan mirror situated near the entrance of the telescope is used to observe at up to ±30° perpendicular to the Juno spin plane. The light is focused onto the spectrograph entrance slit, which has a “dog-bone” shape, with three sections of 2.55°x0.2°, 2.0°x0.025°, and 2.55°x0.2° (as projected onto the sky). Light entering the slit is dispersed by a toroidal grating which focuses FUV light onto a curved microchannel plate (MCP) cross delay line (XDL) detector with a solar blind UV-sensitive CsI photocathode. The two mirrors and the grating are coated with MgF2 to improve FUV reflectivity. Tantalum surrounds the spectrograph assembly to shield the detector and its electronics from high-energy electrons. All other electronics are located in Juno’s spacecraft vault, including redundant low-voltage and high-voltage power supplies, command and data handling electronics, heater/actuator electronics, scan mirror electronics, and event processing electronics. The purpose of Juno-UVS is to remotely sense Jupiter’s auroral morphology and brightness to provide context for in situ measurements by Juno’s particle instruments. Here we present the first near-Jupiter results from the UVS instrument following measurements made during PJ1, Juno’s first perijove pass with its instruments powered on and taking data. [less ▲]

Detailed reference viewed: 15 (2 ULg)
Full Text
See detailSearch for low-latitude atmospheric hydrocarbon variations on Jupiter from Juno-UVS measurements
Hue, Vincent; Gladstone, Randy; Greathouse, Thomas et al

Conference (2016, December 13)

The Juno mission offers the opportunity to study Jupiter, from its inner structure, up to its magnetospheric environment. Juno was launched on August 2011 and its Jupiter orbit insertion (JOI) occurred on ... [more ▼]

The Juno mission offers the opportunity to study Jupiter, from its inner structure, up to its magnetospheric environment. Juno was launched on August 2011 and its Jupiter orbit insertion (JOI) occurred on July 4th 2016. The nominal Juno mission involves 35 science polar-orbits of 14-days period, with perijove and apojove distances located at 0.06 Rj and 45 Rj, respectively. Juno-UVS is a UV spectrograph with a bandpass of 70<λ<205 nm, designed to characterize Jupiter UV emissions. One of the main additions of UVS compared to its predecessors (New Horizons- and Rosetta- Alice, LRO-LAMP) is a 2.54 mm tantalum shielding, to protect it from the harsh radiation environment at Jupiter, and a scan mirror, to allow for targeting specific auroral and atmospheric features at +/- 30˚ perpendicular to the Juno spin plane. It will provide new constraints on Jupiter’s auroral morphology, spectral features, and vertical structure, while providing remote-sensing constraints for the onboard waves and particle instruments. It will also be used to probe upper-atmospheric composition through absorption features found in the UV spectra using reflected solar UV radiation. For example, stratospheric hydrocarbons such as C2H2 and C2H6 are known to absorb significantly in the 150-180 nm regions, and these absorption features can be used to determine their abundances. We will present our search for the spectroscopic features seen in Jupiter’s reflected sunlight during the first perijove. [less ▲]

Detailed reference viewed: 15 (2 ULg)
See detailNouveautés en matière d’accès à un avocat - Directive et loi « Salduz II »
Jacques, Elodie ULg

Conference (2016, December 13)

Detailed reference viewed: 20 (0 ULg)
Full Text
See detailJupiter’s auroras during the Juno approach phase as observed by the Hubble Space Telescope
Nichols, Jonathan D; Clarke, John T; Orton, Glennn S et al

Conference (2016, December 13)

We present movies of the Hubble Space Telescope (HST) observations of Jupiter’s FUV auroras observed during the Juno approach phase and first capture orbit, and compare with Juno observations of the ... [more ▼]

We present movies of the Hubble Space Telescope (HST) observations of Jupiter’s FUV auroras observed during the Juno approach phase and first capture orbit, and compare with Juno observations of the interplanetary medium near Jupiter and inside the magnetosphere. Jupiter’s FUV auroras indicate the nature of the dynamic processes occurring in Jupiter’s magnetosphere, and the approach phase provided a unique opportunity to obtain a full set of interplanetary data near to Jupiter at the time of a program of HST observations, along with the first simultaneous with Juno observations inside the magnetosphere. The overall goal was to determine the nature of the solar wind effect on Jupiter’s magnetosphere. HST observations were obtained with typically 1 orbit per day over three intervals: 16 May – 7 June, 22-30 June and 11-18 July, i.e. while Juno was in the solar wind, around the bow shock and magnetosphere crossings, and in the mid-latitude middle-outer magnetospheres. We show that these intervals are characterised by particularly dynamic polar auroras, and significant variations in the auroral power output caused by e.g. dawn storms, intense main emission and poleward forms. We compare the variation of these features with Juno observations of interplanetary compression regions and the magnetospheric environment during the intervals of these observations. [less ▲]

Detailed reference viewed: 20 (2 ULg)
Peer Reviewed
See detailHistory and Sociology of French Video Game Magazines
Dozo, Björn-Olav ULg

Conference (2016, December 13)

Detailed reference viewed: 14 (2 ULg)
See detailSolar electrons observed in the magnetosphere
Shi, Quanqi; Wang, linghua; Zong, Qiugang et al

Poster (2016, December 12)

Detailed reference viewed: 14 (3 ULg)
Full Text
Peer Reviewed
See detailNanoparticles-nanosubstrates hybrids through one pot synthesis by plasma treatment: towards optimization of Pt/carbon catalysts for PEM fuel cells
Busby, Yan; Gulas, Michal; Laurent-Brocq, Mathilde et al

Conference (2016, December 12)

Detailed reference viewed: 20 (2 ULg)
Peer Reviewed
See detailNi visionnaires, ni obsolètes : penser les récits d'anticipation dans l'histoire (littéraire)
Stienon, Valérie ULg

Conference (2016, December 09)

Situer le récit d’anticipation dans l’histoire des pratiques culturelles, en particulier dans l’histoire littéraire, est une démarche problématique à plus d’un titre. L’une des résistances majeures est la ... [more ▼]

Situer le récit d’anticipation dans l’histoire des pratiques culturelles, en particulier dans l’histoire littéraire, est une démarche problématique à plus d’un titre. L’une des résistances majeures est la tendance normative à réinterpréter les textes concernés en les classant soit dans les œuvres visionnaires géniales à sauver ponctuellement de l’oubli, soit dans les nombreuses prophéties non advenues ayant périmé à juste titre. Récit bref, roman ou essai fictionnel, le texte d’anticipation semble de la sorte condamné à cette réception binaire qu’il programme dans son pacte de lecture. Il s’emploie à traiter du futur alors même qu’il est étroitement lié à son premier contexte d’écriture par les réseaux éditoriaux, les supports médiatiques et les référents des représentations qui le composent. Cela contribue à le dater très fortement et à restreindre sa postérité à l’adéquation entre une visée prospective de la fiction et sa validation par l’Histoire. Le cas du récit d’anticipation invite ainsi à étudier la durée de vie de certaines productions culturelles au regard des constructions rétrospectives qui en sont faites : dans quelle mesure l’obsolescence contrainte d’un certain corpus littéraire peut-elle aider à penser la généricité dans l’histoire ? Les exemples choisis porteront sur un corpus francophone situé entre 1800 et 1950, période précédant l’émergence des collections françaises de science-fiction. On examinera spécifiquement les trois cas de figure suivants : les assises idéologiques du discours social (progrès, hygiénisme, saint-simonisme) chez Émile Souvestre (Le monde tel qu’il sera, 1846) ; l’anticipation mêlée à la satire journalistique dans l’œuvre d’Albert Robida et le tropisme du spectacle (théâtre, féérie, magie) dans l’esthétique du « merveilleux scientifique ». [less ▲]

Detailed reference viewed: 26 (1 ULg)
Full Text
Peer Reviewed
See detailRecurrent stress fracture of tibial tubercule in a volleyball player - a case report
SANFILIPPO, Damien ULg; Kaux, Jean-François ULg

in Abstract Book of Annual Congress of Physical & Rehabilitation Medicine 2016 (2016, December 09)

Detailed reference viewed: 16 (0 ULg)
Full Text
Peer Reviewed
See detailCortical desmoid: Case Report and Literature Review
COLLIN, Romain ULg; Kaux, Jean-François ULg

in Abstract Book of Annual Congress of Physical & Rehabilitation Medicine 2016 (2016, December 09)

We describe a cortical desmoid lesion in a 13-year-old male football player. This case is the typical illustration of symptoms and radiological findings founded in cortical desmoid. Cortical desmoid is ... [more ▼]

We describe a cortical desmoid lesion in a 13-year-old male football player. This case is the typical illustration of symptoms and radiological findings founded in cortical desmoid. Cortical desmoid is benign cortical fibro-osseous lesion that most frequently occurs in the medial supracondylar femur. A traumatic pathogenesis of this lesion is the most probable cause due to higher traction forces at the insertion site of gastrocnemius or the aponeurosis of adductor magnus. It’s usually diagnosed in 10-15-year-old male adolescent who present knee pain, tenderness or swelling. It also can be asymptomatic and incidental finding on radiological exam. Radiologic features depend on the shape and the stage of lesion evolution. It is important to make a correct diagnosis to avoid many additional tests and biopsy, thinking it is a malignant bone tumor. Despite no published therapeutic guideline exists in literature, symptomatic treatment can be considered efficient. [less ▲]

Detailed reference viewed: 14 (1 ULg)
Full Text
Peer Reviewed
See detailIntracanalar lumbar neurinoma
Manto, Florence; HOUET, Elise ULg; LACREMANS, Pierre ULg et al

in Abstract Book of Annual Congress of Physical & Rehabilitation Medicine 2016 (2016, December 09)

Neurinoma are slow growing encapsulated tumors, coming from Schwann cells. They are a rare cause of low back pain, possibly with a radiating pain in the inferior limb. This case report describes the ... [more ▼]

Neurinoma are slow growing encapsulated tumors, coming from Schwann cells. They are a rare cause of low back pain, possibly with a radiating pain in the inferior limb. This case report describes the managing of a patient with right cruralgia without strength lost. The CT- scan had failed to highlight a lesion corresponding to the symptoms of the patient. A MRI was therefore realized, and was able to show a lumbar intradural tumor. The MRI signal of neurinoma is usually typical. However, in this case, the histo-pathological analysis has been necessary to confirm the diagnosis. The patient underwent laminectomy and tumor resection with nearly complete resolution of symptoms, excepting a right perineal hemihypoesthesia, probably corresponding to the location of the concerned nervous root. The MRI is the best method to explore cruralgia or a sciatica not responding to treatment, and without precipitating factor such as disc herniation explaining the symptoms. [less ▲]

Detailed reference viewed: 11 (0 ULg)
Full Text
Peer Reviewed
See detailScapulothoracic bursitis and kyphoscoliosis: a case report
MILANTS, Christophe ULg; Kaux, Jean-François ULg

in Abstract Book of Annual Congress of Physical & Rehabilitation Medicine 2016 (2016, December 09)

Detailed reference viewed: 11 (2 ULg)
Full Text
See detailThe (non)-Effects of Public Experiments on High-Level Radioactive Waste Programs
Parotte, Céline ULg

Conference (2016, December 09)

Siting processes of high-level radioactive wastes remain a sensitive step for nuclear waste management organizations. At this stage, radioactive wastes programs become highly visible. Such concreteness ... [more ▼]

Siting processes of high-level radioactive wastes remain a sensitive step for nuclear waste management organizations. At this stage, radioactive wastes programs become highly visible. Such concreteness increases controversies leading to modification or temporary standstill of the program (see e.g. strong local oppositions in the 80’s in Canada and in France). These controversies have often forced nuclear waste management organizations to include larger societal groups (civil society, NGO’s, parliamentarians, lay people,…) and to recognize the societal dimension of such issue. The program is thus recognized as a sociotechnical one, compelling authorities to a new approach to territorial development (Leloup 2010). At the local scale, new instruments and strategies have been adopted and implemented to tackle this territorial question. One of these tools is the local information committee. Considering nuclear waste management as an art of government (Dean, 2010), this presentation focuses on the siting processes of radioactive wastes programs and analyzes the coproduction between territory and program (Jasanoff 2004). It therefore studies the influence on the programs of the local publics through their local information committee in two specific cases: the French and the Canadian high-level radioactive wastes programs. To do so, it mobilizes official documents, participatory observations, two ethnographic fieldworks (Bure – France and Manitouwadge, Ignace, Schreiber and Nipigon – Canada), and semi-structured interviews. These interviews were conducted with French and Canadian nuclear waste management organizations’ member, regulators, local representatives and local consultation committee’s members. In analyzing such siting processes, we first analytically describe the shift from a national radioactive waste management program to a territorialized management in France and in Canada. Second, it aims at understanding the concrete and sometimes unanticipated effects of implementing a management program at the local level by focusing on the integration of local publics and stakeholders in the decision-making of such processes. Finally, it discusses the dual relationship between program and territory in these processes. Our results highlight that the territorial development of the high-level radioactive wastes programs started within R&D programs although the program was officially presented as “placeless” (Murphy 2009). They also show that the siting processes have been designed very differently. In Canada, the siting process has been co-designed with publics while the French national Parliament has imposed a siting location for the industrial project. Third, through the (in)actions of such local committees considered as invited critics (Wynne 2007), new socio-technical adjustments has occurred in these programs. Even though, we stress that the dichotomy between expert-based and participatory is still pregnant (for different reasons) and reinforce the dichotomy between nature/experts/underground and society/publics/ground. [less ▲]

Detailed reference viewed: 15 (1 ULg)
Full Text
See detailLa démocratie liquide au sein du Parti Pirate belge
Macq, Hadrien ULg

Conference (2016, December 09)

This communication aims at describing how the Belgian Pirate Party implements a system of Liquid Democracy on an online platform.

Detailed reference viewed: 18 (1 ULg)
Full Text
Peer Reviewed
See detailComic strips et papier glacé. Rétro-réflexivité de la bande dessinée chez Cole Closser
Crucifix, Benoît ULg

Conference (2016, December 09)

La « rétromania » bat son plein dans le champ de la bande dessinée qui, aujourd'hui, ne compte plus les rééditions luxueuses des œuvres, canoniques ou oubliées, de son passé1. Les Sunday comics, pages ... [more ▼]

La « rétromania » bat son plein dans le champ de la bande dessinée qui, aujourd'hui, ne compte plus les rééditions luxueuses des œuvres, canoniques ou oubliées, de son passé1. Les Sunday comics, pages dominicales des quotidiens américains où paraissaient en couleur le supplément de bande dessinée, ont fait l'objet d'une attention toute particulière, comme en atteste les rééditions à l'échelle originale réalisées par Sunday Press, magnifiant ces œuvres éphémères au sein d'ouvrages monumentaux. Art Spiegelman et Chris Ware, auteurs clés du roman graphique, ont directement été impliqués dans de tels projets, manifestant une continuité entre ces Sunday pages et leurs propres expérimentations avec la forme, illustrant bien l'adage de Spiegelman, « the future of comics is in the past ». La bande dessinée contemporaine, donc, semble être crucialement située à l'intersection d'une fascination rétrospective pour son passé, et d'une réinvention de ce passé, de l'exploration de « nouvelles » formes. Partant de ce contexte précis, qu'il s'agira d'approfondir, cette présentation examinera les Sunday comics comme « objets en mouvement » à travers l'œuvre de Cole Closser2, qui manifeste une « rétro-réflexivité3 » basée sur l'imitation non seulement du style de comic strips mais aussi sur l'évocation de leurs récentes rééditions. Closser mélange outils numériques et techniques obsolètes pour produire quelque chose qui veut se faire passer pour un objet du passé. L'œuvre de Closser ainsi met en avant les aspects matériels et haptiques liés à la reproduction de « vieux » comic strips, ainsi que le fétichisme lié à cette mise en scène matérielle de ces objets telle qu'on peut la trouver dans les designs des livres de Dan Nadel ou Chip Kidd4. Le cas de Closser est paradigmatique de la manière dont cette forme de rétro-réflexivité dépasse la question d'intertextualité pour interroger comment de « vieilles » bandes dessinées re-circulent en tant qu'objets au sein de la production contemporaine et donc au-delà du marché des collectionneurs. À partir du cas de Closser, cette présentation cherchera à mettre en lumière différents usages que ces objets du passé de la bande dessinée recouvrent au cœur du roman graphique contemporain, cartographiant un mouvement simultanément rétrospectif et orienté vers le futur. [less ▲]

Detailed reference viewed: 18 (6 ULg)
See detailConclusions
Kéfer, Fabienne ULg

Conference (2016, December 09)

Detailed reference viewed: 8 (0 ULg)
Full Text
Peer Reviewed
See detailPoint Clouds as an Efficient Multiscale Layered Spatial Representation
Poux, Florent ULg; Neuville, Romain ULg; Hallot, Pierre ULg et al

in Tourre, Vincent; Biljecki, Filip (Eds.) UDMV16: Eurographics Workshop on Urban Data Modelling and Visualisation (2016, December 08)

3D point clouds describe urban shape at different scales, precisions and resolutions depending on the underlying sensors and acquisition methodology. These factors influence the quality of the data, as ... [more ▼]

3D point clouds describe urban shape at different scales, precisions and resolutions depending on the underlying sensors and acquisition methodology. These factors influence the quality of the data, as well as its representativity. In this paper, we propose a multi-scale workflow to obtain a better description of the captured environment through a multi-scale representative point cloud, presenting an unlimited depth and multisensory data fusion. Our method is shown over a ''smart point cloud'' data structure and based on data fusion principles retaining higher description and precision on overlapping areas. The concept is illustrated through a use case on the castle of Jehay (Belgium), where aerial LiDAR data, terrestrial laser scanner point cloud and photogrammetrybased reconstruction are combined to obtain a multi-scale data structure. [less ▲]

Detailed reference viewed: 15 (1 ULg)
See detailXenogeneic graft-versus-host disease: Impact of Th17 cells.
Delens, Loïc ULg; SERVAIS, Sophie ULg; Vrancken, Louise et al

Poster (2016, December 08)

Detailed reference viewed: 10 (1 ULg)
Peer Reviewed
See detailEnjeux culturels de l'obsolescence technique et esthétique des jeux vidéo
Delbouille, Julie ULg; Hurel, Pierre-Yves ULg

Conference (2016, December 08)

Dès ses premières tentatives d’expansion sur le marché domestique, le jeu vidéo est marqué du sceau d’une double obsolescence : obsolescence ​te​chnique, qui régulera de plus en plus la durée de ... [more ▼]

Dès ses premières tentatives d’expansion sur le marché domestique, le jeu vidéo est marqué du sceau d’une double obsolescence : obsolescence ​te​chnique, qui régulera de plus en plus la durée de vie des dispositifs de jeu, mais également​ es​thétique, poussant le consommateur à remplacer des machines que la succession rythmée des « générations » rend rapidement désuètes. Cette obsolescence double est renforcée par l’omniprésence dans les discours de la course à la technologie : la presse spécialisée entretient la promesse de « lendemains qui chantent » (Triclot, 2016), glorifiant l’avenir du jeu vidéo. Ce motif récurrent se diffuse également dans les médias généralistes — qui, pendant plusieurs décennies, puisent dans la dimension économique du médium un des seuls discours bienveillants le concernant (Delbouille, 2018) — ainsi qu’auprès du grand public. A contrario, plusieurs pratiques culturelles développées par les joueurs viennent répondre à cette fuite en avant : d​ u ​retrogaming ​ au ​retromaking, de l’émulation aux politiques de patrimonialisation du médium (Barbier, 2014), ces pratiques ​constituent autant de tactiques (De Certeau, 1990) de résistance face à cette stratégie industrielle. Elles permettent ​alors d’aborder différemment, par exemple, l'histoire du jeu vidéo ​— qui n'est encore généralement envisagée que par le biais de sa dimension technique. Par la rupture qu’elles semblent marquer ​avec les productions dominantes, ces pratiques se situent « en décrochage » par rapport​ ​à la temporalité de l’industrie. L’objet de cette communication, en faisant dialoguer ces deux dynamiques, est de constituer l'obsolescence en tant qu’outil d’analyse des enjeux culturels du jeu vidéo. En résistant à l'obsolescence, en refusant l'expiration d'anciennes ​« ​delivery technologies » (Jenkins, 2013), les amateurs (Hurel, 2017) affirment l'existence d'un média jeu vidéo à part entière. Quant aux acteurs industriels, en réintégrant ces pratiques de décrochage au sein de leur course technologique, ils semblent arpenter une ligne de crête ​— cherchant ​à bénéficier d'un statut culturel qui leur serait bénéfique, sans pour autant abandonner le cœur de leur moteur économique. [less ▲]

Detailed reference viewed: 27 (2 ULg)
Peer Reviewed
See detailDARIAH-BE: Towards an ecosystem of Digital Humanities Research Centres in Belgium
Chambers, Sally; Deroo, Katrien; Dozo, Björn-Olav ULg et al

Conference (2016, December 08)

Digital Humanities is flourishing in Belgium. There are Virtual Research Environments (VRE) for studying transnational intellectual collaborations in the area of social reform and the political and social ... [more ▼]

Digital Humanities is flourishing in Belgium. There are Virtual Research Environments (VRE) for studying transnational intellectual collaborations in the area of social reform and the political and social history of the Belgian justice system. Tools being developed to digitally uncover the genetics of manuscripts or create a linked data structure to map networks across the ancient world. Furthermore, Electronic Literature across Europe is being mapped and video games are being studied using humanities research methods. The digitisation of artistic, historic and scientific collections is also a key priority in Belgium. With the Belgian Art Links and Tools platform, BALaT, the development of a Data Hub for Museums and Belgium’s digitised newspapers in Belgica Press being flagship examples. Alongside this rich tapestry of activities, Belgium is a Founding Member of DARIAH-EU, the Digital Research Infrastructure for the Arts and Humanities. The aim of DARIAH in Belgium is to develop and offer a sustainable portfolio of services enabling digital scholarship in the arts and humanities in Belgium and beyond. To realise this, partner institutions within Belgium are in the process of establishing Digital Humanities Research Centres which together will form a humanities-specific digital ecosystem, offering services both within their own institutions and to other institutions in Belgium. Additionally, selected services will be scaled-up for use within the European DARIAH community, and offered as in-kind contributions to DARIAH-EU. In this paper we will explore both the intra- and inter-institutional context of digital humanities centres in Belgium. Starting at the intra-institutional level, we will introduce two existing digital humanities research centres: the Centre Informatique de Philosophie et Lettres (CIPL, Université de Liège) in the French-speaking part of Belgium and the Ghent Centre for Digital Humanities (GhentCDH, Ghent University) in the Dutch-speaking part of Belgium. We will examine both the organisational goals of these centres and how they support digital humanities research within the university, with a particular focus on the collaborations they set up on an institutional level (for example with IT services and the library as well as between research groups). Furthermore, we compare these existing centres, with the newest digital humanities centre in Belgium, the Leuven Centre for Digital Humanities (LCDH) which is currently in the process of being established in the Dutch-speaking university and DARIAH partner institution, KU Leuven. Finally, we will analyse the opportunities and challenges in the inter-institutional context. While challenges such as the complex funding landscape and multilingual research environment should not be underestimated, there are many opportunities that can be celebrated. For example, collaborative training initiatives, such as Research Community Digital Humanities Flanders, which is open to members beyond Flanders, the annual DH Benelux conference which offers a platform for collaboration between digital humanities projects in Belgium, the Netherlands and Luxembourg and joint-funding opportunities such as the Belgian Research Action through Interdisciplinary Networks (BRAIN) programme. Additionally, activities for participation in DARIAH-EU, including preparing Belgian in-kind contributions and establishing DARIAH Working Groups not only addresses these challenges, but contributes to ensuring that digital humanities activities in Belgium thrive. [less ▲]

Detailed reference viewed: 29 (1 ULg)
Full Text
See detailIntegrated continuous flow photoreactors: Photooxidation of (L)-methionine with singlet oxygen
Emmanuel, Noémie ULg; Mendoza Gallego, Carlos ULg; Lismont, Marjorie ULg et al

Poster (2016, December 08)

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

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

Detailed reference viewed: 16 (4 ULg)
Full Text
Peer Reviewed
See detailFACILITER L'ADHÉRENCE AU TRAITEMENT IMMUNOSUPPRESSEUR CHEZ LES TRANSPLANTÉS DU REIN- TEST D'UN SYSTEME DE COACHING PAR SMARTPHONE
Saint-Remy, Annie ULg; Spiroux, Marie; WEEKERS, Laurent ULg et al

Poster (2016, December 08)

Facilitate adherence to immunosuppressive treatment in kidney transplant recipients – test of a coaching system with smartphone application A.Saint-Remy, M. Spiroux, L. Weekers, C. Bonvoisin, JM ... [more ▼]

Facilitate adherence to immunosuppressive treatment in kidney transplant recipients – test of a coaching system with smartphone application A.Saint-Remy, M. Spiroux, L. Weekers, C. Bonvoisin, JM. Krzesinski Introduction: Nonadherence to immunosuppressants is a determining cause of graft loss. The present study tested during 1 month, the usefulness and the effectiveness of a coaching system using smartphone application (the Transplant Smartcoach®) on adherence in kidney transplant recipients. Methodology: The sample included 51 patients (28m/23w) transplanted for 1 year at least, mean age 52±12 years, mean graft survival 3.7±1 years. Each patient had a smartphone configured with its detailed treatment. Using the smartphone application, patient had to notify daily the intake of each tablet into a 2-hour window. If no notification was performed 1 hour later than the scheduled time of intake, the patient was contacted by a nurse to remind him to take medications. Results: 90 % of patients were treated with Tacrolimus and 10 % with cyclosporine, associated with mycophenolic acid (41 %) or mycophenolate mofetil (49 %), 41 % had corticosteroids. Whatever was the immunosuppressant, a perfect adherence (medications taken at the scheduled time) was observed on average in 53 % of the morning monthly intakes. There was no difference in adherence rates between the morning intakes of Advagraf ® (once/day) and Prograft® (2 times/day), a decrease of perfect adherence was identified with the evening intake of Prograft® (53 % vs 44%; P=0.07) and the one of Myfortic® (P=0.03) with consequently an increased frequency of nurse’s recalls. Adherence was lower in younger patients and in those still working. The complexity of treatment (many drugs intake/day) and the respect for time intervals between drug intakes were the major barriers to adherence. When compared to the one measured before using the Smartcoach, the variability (coefficient of variation, %) of the Tacrolimus trough level decreased by 32.6 % (P=0.027) in the 3 to 6 months following the test. Conclusion: patients appreciated the ease and usefulness of the coaching system with smartphone application to help medication adherence. Coupled with therapeutic education of the patients, that tool deserves to be used notably in newly transplanted patients and when a worrying decrease in adherence is observed to help them in the management of a rigorous adherence which should contribute to graft survival. [less ▲]

Detailed reference viewed: 43 (11 ULg)
Full Text
Peer Reviewed
See detailLimited impact of imatinib in a murine model of sclerodermatous chronic graft-versus-host disease (scl-cGVHD)
Fransolet, Gilles ULg; Belle, Ludovic; SOMJA, Joan ULg et al

Conference (2016, December 08)

- Introduction: Graft-versus-host disease (GVHD) remains one of the major complications following haematopoietic stem cell transplantation (HSCT). Approximately 15% of the patients with chronic GVHD ... [more ▼]

- Introduction: Graft-versus-host disease (GVHD) remains one of the major complications following haematopoietic stem cell transplantation (HSCT). Approximately 15% of the patients with chronic GVHD develop the sclerodermatous form of the disease characterized by multiple organ fibrosis and loss of skin elasticity. Several studies have shown the potential benefits of imatinib, a tyrosine kinase inhibitor (TKI), as a treatment of fibrosis in cGVHD due to its ability to inhibit simultaneously PDGF-R and c-Abl pathways which are both involved in fibrosis mechanisms. - Aims: Some early-phase clinical studies have assessed the impact of TKIs in patients with steroid-refractory cGVHD. Unfortunately, these studies yielded to conflicting results underlying the importance of re-assessing the impact of imatinib in scl-cGVHD pre-clinical models. This work investigates the possible benefits of imatinib on fibrosis in a murine model of sclerodermatous chronic GVHD (scl-cGVHD). - Methods and results: Lethally irradiated Balb/cJ mice (7 Gy TBI) were injected i.v. with 1.106 or 10.106 bone marrow cells and 2.106 or 70.106 splenocytes from B10.D2 donnor mice (Moderate and Classical scl-cGVHD models respectively). Mice were then treated with sterile water or imatinib (150 mg/kg/day) by oral gavage from day +7 to day +52 following transplantation. cGVHD severity was assessed three times/week with a scoring system encompassing 5 criteria (mice posture, weight loss, activity, hair loss, skin integrity ; 0-1-2 point(s)/criteria). Skin biopsies were performed on day +29 following transplantation to assess phosphorylation of c-Abl (TGF-β pathway) and PDGF receptor. Our results show that imatinib failed to prevent/improve GVHD with a similar evolution of the GVHD severity with no differences between groups (neither in moderate cGVHD model, nor in the classical cGVHD model). Mice weight loss during the experiments was also comparable between groups in both models of cGVHD. In the classical model, histological analyses indicate a significant reduction of the phosphorylation level of the PDGR receptor (p = 0.0079). In vivo cell proliferation assay with CFSE were also performed and showed a reduced proliferation of T cells and subsets (CD4, CD8 and Tregs) in spleen, lymph nodes, bone marrow and blood after imatinib treatment. Finally, FACS analyses performed on days +21 and +35 after transplantation did not show any differences in the absolute T-cell counts. - Conclusions: Although we have observed a decreased phosphorylation level of PDGR receptor and less proliferation of T cells and subsets in vivo, imatinib failed to alleviate scl-cGVHD both in moderate and classical murine models of scl-cGVHD. [less ▲]

Detailed reference viewed: 14 (3 ULg)
See detailPlanned Obsolescence, Nature and the Self in American Literature
Lombard, David ULg

Conference (2016, December 08)

On the cusp of the 1980s, when it became increasingly apparent that humanity had left its mark on every inch of the surface of the earth and altered its atmosphere, the idea of a strictly natural world ... [more ▼]

On the cusp of the 1980s, when it became increasingly apparent that humanity had left its mark on every inch of the surface of the earth and altered its atmosphere, the idea of a strictly natural world became obsolete and needed to be reimagined. As a result, American environmentalist Bill McKibben presented in his essay The End of Nature (1989) the hypothesis of a postnatural world, a world in which nature has ended ‘both as a discrete biophysical entity and as a meaningful concept’ (McKibben, 1989). This presentation will aim at demonstrating how American civilisation ‘planned’ the obsolescence of both nature and the self through its yearning for progress, production and for the accumulation of manufactured products and wealth. Besides commenting on McKibben’s essay, I will draw parallels between other works such as Henry David Thoreau’s memoir Walden (1854) and Don DeLillo’s novel White Noise (1985) in order to illustrate how the evolution of the American process of self-realisation that was originally connected to the natural landscape led to the fragmentation of the self in the postmodern landscape as expressed, for instance, in Fredric Jameson’s book Postmodernism, or, the Cultural Logic of Late Capitalism (1991). I will also argue that Thoreau anticipated the notion that a construction of an identity based on a transcendental relationship with sublime nature was soon to be replaced by a transcendental experience with objects of consumption¬—or waste—or, more largely, with the postmodern sublime landscape. I will show that American literature may be at odds with Bernard London’s representation of consumer capitalism and with his description of planned obsolescence as a means of ‘salvation’ for the American people (London, 1932). [less ▲]

Detailed reference viewed: 26 (4 ULg)
Full Text
See detailOpen Access: challenging the norm in academia
Rentier, Bernard ULg

Conference (2016, December 07)

Science communication is undergoing a considerable evolution in the Internet era. Open Access is at last letting researchers, scholars and students in developing countries acquire full access to ... [more ▼]

Science communication is undergoing a considerable evolution in the Internet era. Open Access is at last letting researchers, scholars and students in developing countries acquire full access to scientific knowledge. Nowadays, this represents a bit less than half of the scientific literature, the other half being still hidden behind paywalls and unaffordable by them. Unfortunately, in order to preserve their highly profitable business model, the major publishing companies are flipping the model from "pay to read" to "pay to publish". This is the most important threat for African and other developing countries: the price to pay for reading freely is the loss of opportunity to communicate. A truly democratic future, at the international level, calls for publicly run open publication platforms accessible to all, submitted to open reviewing and immediately accessible. This novel communication tool can only be attractive upon two conditions: 1) it must be attractive enough so that the researchers become aware of the advantages it provides in terms of audience, visibility and potential citations; 2) the research/researcher evaluation processes must take the new paradigm in consideration and quit using the current indirect metrics (proxys) such as the journals impact factor. However, this indispensable change in the evaluation tradition must be adopted worldwide and at the same time if no scientific community, particularly the young generation, is to be sacrificed. [less ▲]

Detailed reference viewed: 106 (6 ULg)
Full Text
See detailGenetic diagnosis and emergence of patients and relatives' evidence-based activism
Duysens, Fanny ULg

Conference (2016, December 07)

Health- and disease-related events may be of highly significance for patients and their relatives. Naming a medical diagnosis is one of them. It carries the inherent power of (re)configuring the ... [more ▼]

Health- and disease-related events may be of highly significance for patients and their relatives. Naming a medical diagnosis is one of them. It carries the inherent power of (re)configuring the individuals' life courses, which are moreover closely linked to those of their relatives, and especially blood families in the case of (hereditary) genetic diseases. Drawing on ethnographic observations and narratives from patients and relatives involved in some Belgian organizations concerned with genetic disorders, this paper is interested in the ways these concerned people make sense of the naming of a medical diagnosis event by (re)interpreting their past familial stories, trying to intervene in the present, and designing a desired future. Then, it explores the case of the annual charity TV show "Téléthon", which is an initiative launched at the initiative of some French-speaking patients’ organizations (POs) concerned with neuromuscular disorders in the aims at putting awareness on rare disorders and raising funds in order to support biomedical research, especially in the field of medical genetics. The point is to question the dynamic relationships between the individual and familial experiences and such collective mobilizations, that is to say the dynamic relationships between individual and collective dimensions of POs' evidence-based activism. The argument is that such forms of activism participate in the co-construction of "gene worlds" (Timmermans & Shostak, 2015), through the relations between various actors and institutions: POs, scientific and medical professionals, public health institutions, and healthcare systems. [less ▲]

Detailed reference viewed: 16 (4 ULg)
Full Text
Peer Reviewed
See detailCHARACTERIZATION OF THE KABYLE BREED OF HEN (THAYAZIT LEKVAYEL) AND ITS FARMING SYSTEM IN THE REGION OF CHEMINI AND BOUZEGUENE (ALGERIA)
Moula, Nassim ULg

in INTERNATIONAL CONFERENCE Agriculture Development in the Context of International Integration: Opportunities and Challenges (2016, December 07)

The rural poultry in Algeria is a supplier of popular products. The aims of this study are to characterize local chickens in Kabylie in terms of the livestock practices, management, flock structures, uses ... [more ▼]

The rural poultry in Algeria is a supplier of popular products. The aims of this study are to characterize local chickens in Kabylie in terms of the livestock practices, management, flock structures, uses, performance and phenotypes. The present survey addresses this issue in the case of Kabylie, a mountainous coastal region of Algeria, and concerns 28 households raising poultry and a morpho - biometric description of 388 (290 females and 98 males) adult local chickens. The farming practices is characterized by a reduction in the time allocated for this activity and to deal with production costs which are aspects of an unproductive extensive livestock system considered as a secondary activity. The body weight is 2.03 ± 0.22 kg and 1.61 ± 0.19 kg respectively in the male and the female. The age at first egg, egg weight, egg production per hen per clutch, number of clutches per year, hatchability and number of chicks weaned are 28.00 ± 3.82 weeks, 49.03 ± 3.66 g, 13.57 ± 1.64, 3.82 ± 1.14, 89.29 ± 9.79% and 7.82 ±1.75 respectively. The comb type is mostly single (89.43%). Skin colours are principally white (39.18%) and yellow (39.43). The comb and wattles are mostly red (93.30). Shanks colours are principally yellow (49.74%) and white (24.23%). The most common plumage colours are salmon (14.43%), white (12.11%), black (17%), grey (9.54%) and gold (9.02%). The genetic improvement of local poultry breeds is also to consider, provided that the suitability of the animal with respect to the context of its breeding is preserved. [less ▲]

Detailed reference viewed: 36 (6 ULg)
Full Text
See detailImplication of Importin-8 in mouse brain development
Nganou, Gerry ULg; Coumans, Bernard ULg; De Nijs, Laurence et al

Poster (2016, December 06)

Importin-8 (IPO8) is a protein that regulates the nucleocytoplasmic transport of some proteins important for cerebral development (Ago2, c-Jun, Smad4). In HEK cells, IPO8 seems to not plays others roles ... [more ▼]

Importin-8 (IPO8) is a protein that regulates the nucleocytoplasmic transport of some proteins important for cerebral development (Ago2, c-Jun, Smad4). In HEK cells, IPO8 seems to not plays others roles (like mitotic spindle formation, primary cilium transport). In situ hybridization performed in mouse brains slices shows that IPO8 is already expressed at E14. Moreover, inhibition of its action (IPO8) in embryonic mouse brain leads to impairment of neuroblast migration to upper cortical layers. IPO8 could then be at the origin of some pathologies with neuronal migration deficit. [less ▲]

Detailed reference viewed: 15 (3 ULg)
Full Text
See detailPourquoi un (énième) colloque sur le format epub ?
Dozo, Björn-Olav ULg

Conference (2016, December 05)

Detailed reference viewed: 15 (0 ULg)
See detailHow to use serology in Sexually Transmitted Infections
HUYNEN, Pascale ULg; LIBOIS, Agnes

Conference (2016, December 02)

Detailed reference viewed: 14 (1 ULg)