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See detailPlant fibers for renewable growing media: acidification or inoculation with biocontrol fungi to reduce the N drawdown in extruded Miscanthus straw
Vandecasteele, Bart; Debode, Jane; Muylle, Hilde et al

Conference (2017)

Peat based growing media are not sustainable and not easily colonized by biocontrol organisms. Plant fibers may allow for partially replacing peat in growing media and they may have the potential to carry ... [more ▼]

Peat based growing media are not sustainable and not easily colonized by biocontrol organisms. Plant fibers may allow for partially replacing peat in growing media and they may have the potential to carry biocontrol organisms. However, they may also carry plant pathogens and they may vary in their degree of biodegradability and their interaction with N, and thus they may affect the quality of growing media. Several defiberization techniques were tested for flax shives, miscanthus and reed straw for their ability to (1) kill plant pathogens present on the plant fibers, (2) reduce the N-fixation risk of the fibers and (3) provide fibers serving as carrier of biocontrol fungi. Flax shives obtained from various sources were colonized by viable microsclerotia of the plant pathogen Verticillium dahliae. However, when sufficiently high temperatures were reached during defiberization, this technique killed the plant pathogen on the shives, allowing the use of defiberized flax shives in growing media. Untreated flax shives, miscanthus or reed straw were characterized by high N immobilization. Using these plant fibers as peat replacement in growing media may thus reduce N availability for plants. According to the incubation trials results, extruding, retruding and applying disc refining significantly reduced the N immobilization for miscanthus straw without affecting the pH of the fiber, while steam explosion significantly reduced the pH and resulted in higher N immobilisation. Extruding and retruding the flas shives increased the N fixation. Defiberized pure miscanthus or reed straw and flax shives were easily colonized by fungal biocontrol strains, e.g. Trichoderma spp. . The effect of inoculation with fungi or acidification on N fixation was tested for extruded miscanthus fibers. Inoculation with shiitake (Lentinula edodes) or Agrocybe aegerita, i.e., 2 fungi without biocontrol properties was effective in reducing the N immobilization only in a specific pH range and at high colonization degree and/or for fungi with fast colonization, but never increased the N fixation when successfully inoculated. Inoculation of extruded Miscanthus fibers with different strains of biocontrol fungi did not increase nor decrease the N immobilization. Reducing the pH of the fibers between pH 2.5 and 4.7 was effective in reducing the microbial activity and the N fixation. Finetuning the conditions is necessary when applying acidification or inoculation for reducing the N fixation in plant fibers. N immobilization in growing media is related to biological activity. We compared 3 methods to determine the microbial biomass on plant fibers in growing media incubated with mineral N fertilizers, i.e., fumigation-extraction, plfa and Q-PCR, and used water-extractable C to measure the easily available C in the plant fibers. The extrusion of miscanthus straw with or without inoculation of a biocontrol organism reduced the N immobilization when compared with the pure fiber. In case of flax shives, defiberization of plant fibers kills plant pathogens that may be present on the fibers when sufficiently high temperatures are reached during defiberization. Inoculation of plant fibers with biocontrol fungi may be beneficial for increasing the disease resistance in growing media, and we found that inoculation of extruded Miscanthus fibers with biocontrol fungi did not increase nor decrease the N immobilization. [less ▲]

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See detailDurabilité du maraîchage urbain : entre ancrage territorial et trajectoires de mise en œuvre
Plateau, Lou; Maughan, Noémie; Visser, Marjolein et al

Conference (2017)

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See detailTraduire le roman philosophique : le cas des Pages, de Murray Bail
Herbillon, Marie ULg

Conference (2017)

Detailed reference viewed: 15 (1 ULg)
See detailSeasonal Transport in Mars’ Mesosphere revealed by Nitric Oxide Nightglow vertical profiles and global images from IUVS/MAVEN
Stiepen, Arnaud ULg; Stewart; Jain et al

Conference (2017)

We analyze the ultraviolet nightglow in the atmosphere of Mars through Nitric Oxide (NO) δ and γ bands emis- sions. On the dayside thermosphere of Mars, solar extreme ultraviolet radiation partly ... [more ▼]

We analyze the ultraviolet nightglow in the atmosphere of Mars through Nitric Oxide (NO) δ and γ bands emis- sions. On the dayside thermosphere of Mars, solar extreme ultraviolet radiation partly dissociates CO2 and N2 molecules. O(3P) and N(4S) atoms are carried by the day-to-night hemispheric transport. They preferentially descend in the nightside mesosphere in the winter hemisphere, where they can radiatively recombine to form NO(C2Π). The excited molecules promptly relax by emitting photons in the UV δ bands and in the γ bands through cascades via the A2Σ, v’ = 0 state. These emissions are thus indicators of the N and O atom fluxes transported from the dayside to Mars’ nightside and the winter descending circulation pattern from the nightside thermosphere to the mesosphere (e.g. Bertaux et al., 2005 ; Bougher et al., 1990 ; Cox et al., 2008 ; Gagné et al., 2013 ; Gérard et al., 2008 ; Stiepen et al., 2015). Observations of these emissions have been accumulated on a large dataset of nightside disk images and vertical profiles obtained at the limb by the Imaging Ultraviolet Spectrograph (IUVS, McClintock et al., 2015) instrument when the Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft is at its apoapsis and its periapsis phases along its orbit, respectively. We present discussion on the variability in the brightness, altitude and topside scale height of the emission with season, geographical position and local time and possible interpretation for local and global changes in the meso- sphere dynamics. IUVS images and limb scans reveal unexpected complex structure of the emission. The brightest emission is observed close to the winter pole. The emission is also surprisingly more intense in some sectors located close to the equator : at 120 ̊ and 150 ̊ longitude. Observations also reveal spots and streaks, indicating irregularities in the wind circulation pattern and possible impact of waves and tides. The disk images and limb profiles are compared to the LMD-MGCM model (Gonzàlez-Galindo et al., 2009 ; Lopez-Valverde et al., 2011) to focus on the seasonal, local time and geographical influences on the NO Nightglow emission. We will also provide a statistical study of the regions of enhanced brightness (i.e. splotches and streaks) and discuss possible interpretation from the comparison to the GCM. [less ▲]

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See detailTime course of familiarity and novelty decisions in aging
Delhaye, Emma ULg; Bastin, Christine ULg; Moulin, Christopher et al

Conference (2017)

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See detailDeveloping Situational Judgment Tests to Assess Organizational Citizenship Behaviours.
Lothe, Benoit ULg; Hansez, Isabelle ULg

Conference (2017)

This study is a first step towards addressing the development of Situational Judgment Tests (SJTs) for the assessment of Organizational Citizenship Behaviours (OCB). Based on relevant best practices and ... [more ▼]

This study is a first step towards addressing the development of Situational Judgment Tests (SJTs) for the assessment of Organizational Citizenship Behaviours (OCB). Based on relevant best practices and recommendations from the literature, two distinct SJTs were specifically developed to comply with OCB assessment. The two SJTs differ with respect to their degree of job specificity. Data were collected through online surveys on two different samples (220 white-collar professionals and 139 university students). Concurrently, OCB were collected using self-reported measurement scales. The findings provide some empirical evidence to support the appropriateness of using SJTs as an alternative means to assessing job applicants’ propensity to exhibit OCB. [less ▲]

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See detailPolicy Dialogue Makes It Happen!
Porignon, Denis ULg

Conference (2017)

This presentation synthesizes positive achievements made in the frame of the EU-Luxembourg / WHO Universal Health Coverage Partnership over the last 5 years (2012-2016). It presents activities conducted ... [more ▼]

This presentation synthesizes positive achievements made in the frame of the EU-Luxembourg / WHO Universal Health Coverage Partnership over the last 5 years (2012-2016). It presents activities conducted by the several hundreds of persons who were involved in the field work, as well as in Regional Offices and WHO HQ. Please see details on www.uhcpartnership.net [less ▲]

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See detailLocutif: une catégorie syntaxique de marqueurs de discours
Mazziotta, Nicolas ULg; Kahane, Sylvain

Conference (2017)

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See detailIs Political Transnationalism a Mechanism for Peacebuilding in the on-Going Security?
Lara Guerrero, Larisa Viridiana ULg

Conference (2017)

From December 2006 through to the end of 2015, over 150,000 people were intentionally killed in Mexico. Accordingly, from 2006 to the present day, the number of murders and enforced disappearances related ... [more ▼]

From December 2006 through to the end of 2015, over 150,000 people were intentionally killed in Mexico. Accordingly, from 2006 to the present day, the number of murders and enforced disappearances related to organised crime in Mexico has skyrocketed. The United Nations Office of Drugs and Crime has indicated that from 2007 to 2010, Mexico was the country with the highest rate of increase in intentional homicides. The so-called “war” against organized crime has created a context of increasing insecurity and escalating violence, impunity and corruption across the entire country. Against the backdrop of the security crisis, members of Mexican society have organised national and transnational movements to denounce the government. For instance, some observers have hypothesised that the case of the 43 missing students of Ayotzinapa in September 2014 raised awareness amongst the Mexican population and bolstered their political engagement in both national territory and abroad. Mexicans living in the United States, Spain, France, Belgium, Australia, New Zealand and other places around the world have engaged politically to demonstrate their support for the victims and denounce the incapacity of the current State to govern. This paper looks at the political transnational movements organised by Mexican migrants living specifically in Brussels and Paris to answer the following question: Is political transnationalism a tool for peacebuilding for the Mexican on going security crisis? This paper evaluates how has transnational political activism changed the dynamics of the on-going conflict. [less ▲]

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See detailLa Célestine versus Lazarillo: un cas de crossover littéraire
Francois, Jeromine ULg

Conference (2017)

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See detailA Duality for Boolean Contact Algebras
Raskin, Julien ULg; Hansoul, Georges ULg

Conference (2017)

The well-known de Vries duality, established by H. de Vries in 1962, states that the category of compact Hausdorff spaces is dually equivalent to that of de Vries algebras. The notion of Boolean contact ... [more ▼]

The well-known de Vries duality, established by H. de Vries in 1962, states that the category of compact Hausdorff spaces is dually equivalent to that of de Vries algebras. The notion of Boolean contact algebra (BCA) was developed independently in the context of region-based theory of space. Düntsch and Winter established a representation theorem for BCAs, showing that every BCA is isomorphic to a dense subalgebra of the regular closed sets of a T_1 weakly regular space. It appears that BCAs are a direct generalization of de Vries algebras, and that the representation theorem for complete BCAs generalizes de Vries duality for objects. During a conference, Vakarelov raised the question of dualizing morphisms. We answer this question using concepts similar to those of modal logic's neighborhood semantics. [less ▲]

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See detailAnosognosie et monitoring des souvenirs associés au « soi » dans la Maladie d’Alzheimer
Genon, Sarah ULg; Mélon, Marlène; Collette, Fabienne ULg et al

Conference (2017)

Chez les patients atteints de maladie d’Alzheimer (MA), on observe dès les stades débutants d’une part un phénomène d’anosognosie, qui peut être considéré comme une altération de la conscience de soi, et ... [more ▼]

Chez les patients atteints de maladie d’Alzheimer (MA), on observe dès les stades débutants d’une part un phénomène d’anosognosie, qui peut être considéré comme une altération de la conscience de soi, et d’autre part un dysfonctionnement des processus de monitoring mnésique [1]. En outre, l’interaction entre le soi et la mémoire (conférant un bénéfice mnésique pour les informations associées à soi), apparaît significativement altérée dans la MA. Dans la présente étude, nous avons examiné les relations entre l’anosognosie et le monitoring lors de la récupération en mémoire d’informations expérimentalement associées à soi. Nous avons évalué les processus de monitoring lors de la récupération en mémoire à l’aide d’une tâche expérimentale de 32 paires visage-prénom, ainsi que l’anosognosie à l’aide du questionnaire d’anosognosie dans la démence (AQD, [2]) chez 20 patients MA et 20 personnes âgées contrôles (AC). Durant la phase d’encodage, les paires visage-prénom ont été présentées aux participants soit comme des personnes faisant partie de leur famille (soi) soit comme des personnes faisant partie de la famille de l’expérimentateur (autrui). Ensuite, nous avons évalué les jugements de « sentiment de savoir » (FOK), les performances de rappel et de reconnaissance, ainsi que les jugements de confiance (JOC) des participants pour le nom de chaque personne lorsque son visage était présenté. Nos résultats ont confirmé l’altération de la conscience de soi (c’est-à-dire l’anosognosie mesurée par l’AQD), l’altération du bénéfice mnésique pour les informations associées à soi, ainsi que l’altération des processus de monitoring lors de la récupération en mémoire (FOK et JOC) chez les patients MA. Néanmoins, une modification de l’interaction entre le soi et les processus de monitoring chez ces patients a été observée uniquement au niveau des sentiments de confiance pour des souvenirs erronés. Nous avons également observé que l’anosognosie des troubles comportementaux était significativement corrélée à la proportion de sentiments de confiance pour des reconnaissances erronées sur les items associés à soi. En conclusion, notre étude suggère que l’altération de la conscience des troubles comportementaux chez les patients MA pourrait être liée à un déficit de monitoring des souvenirs liés à soi. C’est-à-dire que la conscience altérée du dysfonctionnement au quotidien pourrait s’appuyer sur des souvenirs personnels déformés. [less ▲]

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See detailProcessus cognitifs et neurobiologiques sous-jacents aux déficits de mémoire épisodique dans la maladie d’Alzheimer
Collette, Fabienne ULg

Conference (2017)

Les troubles de la mémoire épisodique représentent une des caractéristiques majeures et précoces de la maladie d’Alzheimer. Ces difficultés sont classiquement attribuées à des déficits au niveau de ... [more ▼]

Les troubles de la mémoire épisodique représentent une des caractéristiques majeures et précoces de la maladie d’Alzheimer. Ces difficultés sont classiquement attribuées à des déficits au niveau de l’encodage et de la consolidation de l’information, processus dépendant notamment des régions temporales internes (et plus particulièrement de l’hippocampe) qui sont atteintes très tôt dans le décours de la maladie. Un certain nombre de données récentes ont toutefois amené à raffiner cette conceptualisation initiale. Il est en effet progressivement apparu que des processus très spécifiques sous-tendent la performance aux tâches de mémoire épisodique utilisées en clinique pour le diagnostic de la maladie, tels que la capacité à créer des liens associatifs entre les items ou à créer des représentations mnésiques très distinctives, ou encore la capacité à faire appel à des processus auto-référentiels. L’efficacité de ces processus semble par ailleurs affectée de façon relativement sélective par différents processus neuropathologiques tels que l’atrophie de certaines régions hippocampiques, la diminution de l’épaisseur corticale, la déconnexion entre réseaux cérébraux, la charge amyloide, ou même la présence de facteurs plus subjectifs tels qu’une plainte mnésique. Les troubles de mémoire épisodique associés à la maladie d’Alzheimer semblent donc clairement multidéterminés. En lien avec ces données cognitives et neurobiologiques, nous discuterons également brièvement l’intérêt des classifications actuelles des troubles cognitifs associés au vieillissement pour comprendre le fonctionnement mnésique et ses bases cérébrales. [less ▲]

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See detailLa métacognition chez l'enfant: un terrain de chasse pour comprendre la performanc mnésique
Geurten, Marie ULg

Conference (2017)

Un des facteurs essentiels qui semble être impliqué dans l’amélioration de la performance en mémoire épisodique au cours de l’enfance est la métacognition. Généralement, les auteurs considèrent que les ... [more ▼]

Un des facteurs essentiels qui semble être impliqué dans l’amélioration de la performance en mémoire épisodique au cours de l’enfance est la métacognition. Généralement, les auteurs considèrent que les habiletés métacognitives émergent relativement tard au cours du développement de l’enfant, raison pour laquelle elles ne sont pas supposées influencer la performance mnésique avant l’âge de 7 ou 8 ans. Pourtant, des études récentes ont montré que les enfants possédaient déjà certaines compétences basiques leur permettant d’évaluer et réguler leur performance mnésique dès l’âge de 4 ans. Nous exposerons ici les résultats de plusieurs recherches montrant le développement précoce des habilités métacognitives. Concrètement, nous présenterons les données récentes indiquant que les enfants sont capables d’utiliser de manière automatique certains indices basés sur le résultat de leur introspection (monitoring métacognitif) pour guider la prise de décision mnésique lors d’épreuves de reconnaissance. Enfin, nous nous pencherons sur certains résultats suggérant que des changements dans la façon dont les enfants utilisent les heuristiques métacognitives peuvent expliquer certaines améliorations de la performance en mémoire épisodique qui sont généralement observées tout au long de l’enfance. [less ▲]

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See detailThiamine: Biological forms and function
Bettendorff, Lucien ULg

Conference (2017)

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See detailProjets de Récupération de chaleur fatale suivis par l’ULg
Lemort, Vincent ULg; Le, Van Long; Gendebien, Samuel ULg et al

Conference (2017)

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See detailMeasured soil erosion and catchment sediment yield data from Africa: an overview
Vanmaercke, Matthias ULg; Poesen, Jean; Broeckx, Jente

Conference (2017)

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See detailGrowth velocity of preterm infants - analysis and recommendations
Fenton, Tanis; Hoyaos, Angela; Groh-Wargo, Sharon et al

Conference (2017)

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See detailThiamine and lipophilic thiamine precursors protect against oxidative damage in cultured neuroblastoma cells
Sambon, Margaux ULg; Wins, Pierre; Bettendorff, Lucien ULg

Conference (2017)

Recent evidence suggests that thiamine (vitamin B1) and some of its derivatives can exert prominent neuroprotective effects in the mammalian brain, particularly in mouse models of Alzheimer’s disease and ... [more ▼]

Recent evidence suggests that thiamine (vitamin B1) and some of its derivatives can exert prominent neuroprotective effects in the mammalian brain, particularly in mouse models of Alzheimer’s disease and tauopathies. As orally administered thiamine crosses intestinal and blood-brain barriers only slowly, precursors with higher bioavailability e.g. sulbutiamine, benfotiamine and dibenzoylthiamine, have been developed. We investigated the protective effects of thiamine and those precursors in neuroblastoma cells cultured in a medium containing minimal amounts of thiamine (10 nM). We induced oxidative stress by incubating the cells (24h) in the presence of the neurotoxic agent paraquat (0.25 mM). This treatment reduced cell viability by 40%. When thiamine or the precursors were present simultaneously, we observed protective effects by the precursors while free thiamine was ineffective.Dibenzoylthiamine was most efficient, affording complete protection of cells at 10-20 μM. It also caused the highest increase in intracellular thiamine, suggesting that the protection from oxidative damage is linked to increased levels of free thiamine (rather than thiamine diphosphate) in the neuroblastoma cells. These results and others from our laboratory raise the possibility that dibenzoylthiamine might useful as a neuroprotective agent in neurodegenerative disease. [less ▲]

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See detailVirus Discovery: After the deluge ... ...the framework!!!
Massart, Sébastien ULg

Conference (2017)

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See detailAnalyse des transformations du secteur des ONG belges de développement : vers une professionnalisation.
Contor, Justine ULg

Conference (2017)

Cette communication revient sur le processus de transformation à l’œuvre dans le secteur des ONG observée depuis quelques années. Cette transformation porte à la fois sur l'organisation et sur le ... [more ▼]

Cette communication revient sur le processus de transformation à l’œuvre dans le secteur des ONG observée depuis quelques années. Cette transformation porte à la fois sur l'organisation et sur le travailleur. En effet, il semblerait que nous sommes face à une nouvelles génération d'ONG, "gestionnaire", dans laquelle de nouveau profil de travailleur (marketing, gestion, communication) coexiste avant d'autres travailleurs avec des profils plus techniques et souvent plus engagés aussi. [less ▲]

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See detailImproved high throughput DNA-seq based mapping of HTLV-1 integration sites: a tool to define response to treatment, ATL prognosis and guide therapeutic strategies
Marçais, Ambroise; Artesi, Maria ULg; Durkin, Keith ULg et al

Conference (2017)

Background Adult T-cell leukemia/lymphoma (ATL) is an aggressive CD4+ T-cell malignancy caused by HTLV-1 infection and associated with extremely poor prognosis. In France, treatment strategies mainly ... [more ▼]

Background Adult T-cell leukemia/lymphoma (ATL) is an aggressive CD4+ T-cell malignancy caused by HTLV-1 infection and associated with extremely poor prognosis. In France, treatment strategies mainly include chemotherapy, antiviral therapy and allogeneic stem cell transplantation, based on clinical subtype and therapeutic responses. Response to treatment is evaluated based on consensus criteria defined in 2009 (Tsukasaki K, Hermine O et al, JCO 2009). Although immuno-phenotyping, TCRγ rearrangement and HTLV-1 proviral load (PVL) quantification are often assayed, complete clinical remission (CR) is currently defined by morphological and cytological criteria i.e. complete blood cell counts (CBC) and the presence of abnormal lymphocytes. Given the extremely poor prognosis and high rates of early relapse, a revision of the response criteria is required, calling for improved tools that integrate specific aspects of the pathophysiology of ATL to better estimate response to treatment. Methods We retrospectively analyzed longitudinal PBMC samples from 6 ATL patients diagnosed with a leukemic subtype (5 acute and 1 chronic-aggressive) which all achieved CR upon therapy, yet relapsed after a median time of 15,9 months (range 2,4-70,7). CR was assessed by morphological and cytological criteria. An improved high throughput sequencing (HTS) based method was utilized to map and quantify the abundance of HTLV-1 genomic integration sites (IS), overcoming some of the limitations of previously published protocols. The dynamic range was increased by assaying both the 5’LTR and 3’LTRs, allowing better determination of clone abundance and revealing 5’ deletions. An enrichment step limited PCR duplicates. The addition of off-the-shelf Illumina primers simplified library multiplexing and reduced the costs to the point where the protocol could be applied to a clinical setting. Results HTS- mapping of HTLV-1 IS at diagnosis revealed in all cases a unique IS that constituted 92-99% of proviral genomes, with PVLs of 33-510%. All patients were treated and achieved CR which was characterized by normalized CBC, <5% abnormal lymphocytes and the absence of measurable tumors for >4 weeks. For 3/6 patients, the clone frequency distribution of HTLV-1 infected cells at CR was composed of multiple low abundance clones, of which the unique presumed malignant IS contributed to less than 2% of proviral genomes. In contrast, clonality analysis of the remaining 3/6 patients revealed that the relative abundance of the malignant clone detected at diagnosis remained dominant at CR (36-83% of PVL), despite clinical response criteria typical of CR and a 3-20-fold decrease in PVLs. These patients relapsed after 2.4, 2.9 and 3.4 months respectively with a dominant malignant clone >95% while patients with a polyclonal architecture showed significantly longer CR (28, 59 and 71 months). Conclusions Our observations highlight the great heterogeneity within an identical CR group, underlining the need for revisiting response criteria for ATL. Our results call for the use of this improved HTS-based method to measure HTLV-1 clonality as a tool to better estimate response to treatment, predict relapse and guide therapeutic choices in the course of treatment. [less ▲]

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See detailHuile d’amande un produit de valorisation de brisures d’amandes issues de décorticage des amandes dans des coopératives de la région Oriental du Maroc
Houmy, Nadia ULg; Sindic, Marianne ULg; Fauconnier, Marie-Laure ULg et al

Conference (2016, December 28)

La culture d’amandier joue un rôle socio-économique important dans plusieurs zones rural du Maroc oriental. Le projet de Filière Amandier (*PROFAO) porte sur l’extension des surfaces plantées d’amandier ... [more ▼]

La culture d’amandier joue un rôle socio-économique important dans plusieurs zones rural du Maroc oriental. Le projet de Filière Amandier (*PROFAO) porte sur l’extension des surfaces plantées d’amandier avec création des nouveaux vergers et des nouvelles unités de concassage des amandes et de valorisation des dérivées d’amandes. En termes de profil variétal les principales variétés plantés dans le cadre du projet PROFAO sont Beldi (Be) Marcona (Mr), et Fournat (Fr) et l’association Ferragnes / Ferraduel (F/F). Le présent travail de recherche appliquée s’intéresse aux possibilités et moyens de valorisation en poste récolte des fruits d’amande et leurs dérivées (Huile d’amande et Tourteau) au niveau des coopératives de la région orientale du Maroc. La récolte des amandes se fait encore par Gaulage, par contre l’extraction des « amandons » de leurs coques, est facilitée par des machines de concassage. Les brisures issues du concassage sont valorisées sous forme d’huile d’amande. Les rendements en huile varient entre un minimum de 51% pour Be et un maximum de 56,6% pour l’association F/F. Le profil en acides gras (AG) se distingue par sa richesse en AG insaturés (principalement des deux AG: Oléique et Linoléique) et une teneur en AG saturés ne dépassant pas les 10%. Ces huiles de brisures d’amandes grâce à leurs teneurs en antioxydant naturels t (Tocophérols), et selon les tests au rancimat présentent de bons indices de stabilité oxydative (OSI) qui varient entre minimum pour l’huile Fr (OSIFr = 20h) et un maximum pour l’huile F/F (OSIF/F= 27h) [less ▲]

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See detailBiostratigraphy of the JLMD-EW8 borehole and palaeogeographic interpretation
Steemans, Philippe ULg; Breuer, P.; Al-Hajri, S. et al

Conference (2016, December 21)

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See detailLe retour du Loup (Canis lupus) en Belgique : quel(s) rôle(s) pour le secteur associatif?
Geboes, Anne-Laure ULg; Kohler, Anthony

Conference (2016, December 21)

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See detailSize and Value Matter But Not the Way You Thought
Lambert, Marie ULg; Fays, Boris ULg; Hübner, Georges ULg

Conference (2016, December 20)

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See detailObservational signatures of past mass-exchange episodes in massive binaries : The cases of HD17505 and HD206267
Raucq, Françoise ULg; Rauw, Grégor ULg

Conference (2016, December 19)

Mass and angular momentum exchanges through Roche Lobe Overflow interactions within close massive binaries are known to play an important role in the subsequent evolution of the components of such systems ... [more ▼]

Mass and angular momentum exchanges through Roche Lobe Overflow interactions within close massive binaries are known to play an important role in the subsequent evolution of the components of such systems, and produce several observational signatures, such as asynchronous rotation and altered chemical compositions, that remain once the stars detach again. We have started to investigate these effects in a sample of massive O-star binaries that are thought to have previously experienced a Case A Roche Lobe Overflow episode. Using phase-resolved spectroscopy, we perform the disentangling of the optical spectra of the two stars. The reconstructed primary and secondary spectra are then analysed with the CMFGEN model atmosphere code to determine stellar parameters such as the effective temperatures, surface gravities and rotational velocities, and to constrain the chemical composition of the components. In this contribution, we present the results of our analyses of the triple system HD17505 ([O7V + O7V, P = 8.57 days] + O6.5III). We also present the first results of our analyses of the triple system HD206267 ([O6.5V + O9.5V,P = 3.71 days] + OB). [less ▲]

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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 ▲]

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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 ▲]

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See detailManufacture and use of points at Maisières-Canal
Touzé, Olivier ULg; Coppe, Justin ULg; Taipale, Noora ULg et al

Conference (2016, December 17)

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See detailImportance de l'utilisation des Systèmes d'Information Géographique pour les vastes sites de plein air du Paléolithique Moyen en France septentrionale. L'exemple de Caours (Somme, France).
Moreau, Gwénaëlle ULg; Locht, Jean-Luc

Conference (2016, December 17)

During the middle Palaeolithic, the northern France was only occupied by Neanderthals groups. However, successions of glacial and interglacial cycles explain a complex and discontinuous settlement ... [more ▼]

During the middle Palaeolithic, the northern France was only occupied by Neanderthals groups. However, successions of glacial and interglacial cycles explain a complex and discontinuous settlement, raising complication in the study of its dynamics at a regional scale. Therefore, some aspects of Neanderthals behaviour are still mischaracterize: in most cases, the function of the site and its territorial management over the northern France have to be specified. The spatial analysis of open air sites from northern France will help us to answer those questions. However, for Middle Palaeolithic sites, we can’t see systematically on the field the spatial organisation directly, we sometimes need modelization. Therefore, we started to build a spatial analysis protocol adapted to this site and applied to such sites. The sites of Caours (Somme, France) and Beauvais (Oise, France) are two open air sites that are exceptionally well preserved and displaying a large amount of faunal and lithic rests. Both are perfect candidate to apply and test the new protocol. First results proved that for each site the existence of a spatial organisation as remains concentration zones. Then, we characterize this areas – number, distribution. Finally, we were able to associate them to human activity areas like hearths, butchery or knapping areas. [less ▲]

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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 ▲]

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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 ▲]

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See detailDe niet-toepassing van de mainplévie in Maastricht
Lagasse, Benoît ULg

Conference (2016, December 16)

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See detailStream-aquifer interactions: a combined field - methodological approach in fractured carbonate catchments
Brouyère, Serge ULg; Briers, Pierre ULg; Orban, Philippe ULg et al

Conference (2016, December 16)

Stream-aquifer studies remain a challenge due to numerous factors impacting these interactions. They play a fundamental role in terms of quantity and quality of water, in particular on the ecological ... [more ▼]

Stream-aquifer studies remain a challenge due to numerous factors impacting these interactions. They play a fundamental role in terms of quantity and quality of water, in particular on the ecological status of rivers. Field quantification of such interactions is a first step but it has to be in relation with the whole budgets of water and transported substances across the catchment in order to represent their importance on overall fluxes. Numerous complementary investigations have to be undertaken to achieve such understanding of catchment behavior, in particular to estimate specific indicators and to achieve representative data for modeling stream-aquifer interactions. From that situation, our study aims to characterize and quantify stream-aquifer interactions to assess reliability of diverse field experiments methodologies. A catchment has been studied for 3 years in quantitative and qualitative ways via a dense instrumentation and monitoring. Numerous complementary investigations (discharge measurements, hydrogeochemistry, distributed temperature sensing, base flow separation…) have been applied to reach the objectives. We achieved a large and diversified measurement dataset of groundwater-surface water interactions and whole water budget. This allowed reaching an improved understanding of the catchment behavior to quantify importance of the groundwater component on the dynamics and chemistry of the stream and on the consequences on river ecological status. The investigations on several subcatchments allows also to propose a general typology of stream catchment in terms of groundwater dependence based on the combination of various groundwater contexts and groundwater-stream interaction indicators. Methodologies applied in this study allow to emphasize strength and weakness of numerous investigations in a stream aquifer project and conclusions can be reproduced and generalized to other contexts. [less ▲]

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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.

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See detailHydrothermal synthesis of tailored new  promising phosphate particles for lithium and sodium ion batteries
Karegeya, Claude ULg; Mahmoud, Abdelfattah ULg; Sougrati Tahar, Moulay et al

Conference (2016, December 16)

The rechargeable Li-ion batteries dominate the currently used storage systems due to their unrivalled electrochemical properties. However, this technology needs more improvements to meet coast, high ... [more ▼]

The rechargeable Li-ion batteries dominate the currently used storage systems due to their unrivalled electrochemical properties. However, this technology needs more improvements to meet coast, high capacity, safety and environmental requirements. Current researches on Li-ion batteries are focusing on the development of safe and cheap electrode compounds with good electrochemical performance. Iron phosphate-based electrodes have attracted increasing interest due to their environmental compatibility, low cost and its promising electrochemical performance as positive electrode materials in LIB. In this work, we report the electrochemical properties of Fex(PO4)(OH)y.zH2O) cathode material obtained by one-pot hydrothermal synthesis route, a technique which produces the particles with suitable properties for electrode application. We show that the addition of a conducting carbon (carbon black or carbon nanotubes) into the solution has a strong influence on reducing the size and tailoring morphology of material particles. These are among the main factors to enhance the electrochemical performance of the material. Combined with electrochemical and XRD studies, operando Mössbauer analysis shows that Fex(PO4)(OH)y.zH2O) undergoes a reversible reduction/oxidation during lithium intercalation/ deintercalation processes. Acknowledgments This work was supported by the Walloon Region through the BATWAL project [PE Plan Marshall 2.vert]; and the Beware Fellowship Academia [2015-1, RESIBAT n° 1510399]. [less ▲]

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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 ▲]

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See detailTraduction et jeu dans le théâtre de Marius von Mayenburg et Nurkan Erpulat
Neelsen, Sarah ULg

Conference (2016, December 15)

La violence est au cœur des deux pièces de théâtre germanophones contemporaines Verrücktes Blut et Märtyrer, qui illustrent les confrontations quotidiennes au sein d’une salle de classe, où chacun s’est ... [more ▼]

La violence est au cœur des deux pièces de théâtre germanophones contemporaines Verrücktes Blut et Märtyrer, qui illustrent les confrontations quotidiennes au sein d’une salle de classe, où chacun s’est crispé sur ses positions et menace de se radicaliser. Les rôles sont figés, les paroles gelées et plus aucune interaction ne semble possible. Dans cette Babel contemporaine, la diversité des langues et des langages ne permet plus de négocier du commun. Pour remettre du jeu sur scène et dans les rapports humains, Erpulat et Mayenburg convoquent la traduction dans toutes ses formes. Entre les langues, puisque tous les personnages manient au moins deux idiomes, en général le turc et l’allemand. Entre sociolectes, c’est-à-dire une langue dite « standard » (Hochdeutsch) devenue, dans le cadre scolaire, un technolecte autoritaire et pauvre, et la « Kanak Sprak » dévaluée car bâtarde et agressive. Entre les époques, puisqu’un texte classique est l’objet même du conflit (Schiller dans un cas, la Bible dans l’autre), et s’avère incompréhensible tant que son caractère canonique interdit toute réinterprétation. Les vertus de la traduction comme actualisation, négociation et déplacement du sens sont donc mises à profit au cours de la représentation afin d’interroger et de renouveler les modalités de la transmission épistémologique. Ce sont ces rapports entre traduction et « jeu », terme emprunté notamment à l’Education esthétique de l’homme (1794), cité longuement dans l’une des pièces et où Schiller écrit que « l’homme n’est tout à fait homme que lorsqu’il joue », qu’on examinera dans cette communication. [less ▲]

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See detailBIM état de la situation
Boutemadja, Abdelkader ULg

Conference (2016, December 15)

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Peer Reviewed
See detailLabels du patrimoine culturel, ordres juridiques et effectivité de la norme
Desseilles, François ULg

Conference (2016, December 15)

Detailed reference viewed: 28 (4 ULg)
Peer Reviewed
See detailTraduction et musique: le cas de Leonard Cohen
Mus, Francis ULg

Conference (2016, December 15)

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See detailPrésentation des activités du PCNSW
Legrain, Xavier ULg; Michel, Brieuc ULg; Roda, Mathilde ULg et al

Conference (2016, December 14)

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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: 46 (7 ULg)
See detailQuadratic reformulations of nonlinear binary optimization problems
Crama, Yves ULg

Conference (2016, December 14)

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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 ▲]

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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 ▲]

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See detailNouveautés en matière d’accès à un avocat - Directive et loi « Salduz II »
Jacques, Elodie ULg

Conference (2016, December 13)

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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 ▲]

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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 ▲]

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See detailHistory and Sociology of French Video Game Magazines
Dozo, Björn-Olav ULg

Conference (2016, December 13)

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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)

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See detailExploitation of coastal fish communities by harbour porpoises Phocoena phocoena during nursing periods in German Baltic waters.
Pinzone, Marianna ULg; Michel, Loïc ULg; Gallus, Anja et al

Conference (2016, December 11)

Baltic sub-populations of harbour porpoises Phocoena phocoena meet in in Southwestern waters in Spring when females reach the coastal areas for calving and nursing. In Autumn they separate again for ... [more ▼]

Baltic sub-populations of harbour porpoises Phocoena phocoena meet in in Southwestern waters in Spring when females reach the coastal areas for calving and nursing. In Autumn they separate again for reproduction : the Belt sea populations westwards in the Kattegat/Skarregat region, the Baltic proper population northwards in the central basin. The increased number of juvenile and newborn strandings along the German Baltic coasts give evidence for a possible existence of local calving grounds in this area. Calving and nursing habitats are the most important areas for management purposes. This project aimed to describe inhabitancy and diet of females and calves along the German Baltic coast, in order to achieve effective conservation measures. Nitrogen, carbon and, for the first time, sulphur stable isotopes (δ13C, δ15N and δ34S) were analysed in coastal species of fish and invertebrates in spring, autumn and winter 2015/2016 and in four different areas, to assess for seasonal and geographical variation of porpoises habitat use. The structure of ecological niches was inferred within and between communities using the SIBER model, and was compared to results from stomach content analysis. N, C and S values of fish and invertebrates strongly varied, seasonally and geographically, as a consequence of environmental factors characteristic of each sampling area. Additionally, each species presented large isotopic variability, suggesting possible intraspecific dietary specialisations. Females δ13C and δ34S signatures integrated both open-waters and coastal feeding, while juveniles presented a more coastal distribution. The absence of difference in δ15N values between age classes confirmed persistence of milk assimilation from the mothers. Niches structures and overlaps and stomach content analysis suggested gobies (Potamoschistus spp and Neogobius spp in particular), crabs and small coastal fish (ex. three-spined stickleback) as the main preys of juveniles. The integration of all three stable isotopes together permitted to well delineate even the highly dynamic food web of the Baltic German waters, confirming the use of sulphur isotopes in marine ecological studies. [less ▲]

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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 ▲]

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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 ▲]

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See detailInvasive Alien Species in HeidelbergCement’s quarries in the European Union
Monty, Arnaud ULg

Conference (2016, December 09)

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See detailConclusions
Kéfer, Fabienne ULg

Conference (2016, December 09)

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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 ▲]

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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.

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See detailChapter VII "Varieties" in J.-É. Pin, Mathematical Foundations of Automata Theory
Massuir, Adeline ULg

Conference (2016, December 09)

Presentation of the chapter VII, "Varieties", in Jean-Éric Pin, Mathematical Foundations of Automata Theory.

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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 ▲]

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See detailJournée transversale inter fédérations - BelRAI Screener
Delye, Samuel ULg; Maggi, Patrick ULg; Gillain, Daniel ULg

Conference (2016, December 08)

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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 ▲]

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See detailEtat du territoire wallon : structures territoriales
Halleux, Jean-Marie ULg

Conference (2016, December 08)

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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 ▲]

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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 ▲]

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See detailInfluence of aging time and technique (dry- vs. wet-aging) on tenderness, color and lipid stability of Belgian Blue beef
Didimo Imazaki, Pedro Henrique ULg; Teixeira Gonçalves, André ULg; Krantz, Mike et al

Conference (2016, December 08)

The aim of this study was to compare the effect of aging conditions (dry-aging vs. wet-aging) and time (0, 21, 42 and 63 days) on tenderness, color and lipid stability of Belgian Blue beef. Three ... [more ▼]

The aim of this study was to compare the effect of aging conditions (dry-aging vs. wet-aging) and time (0, 21, 42 and 63 days) on tenderness, color and lipid stability of Belgian Blue beef. Three longissimus dorsi of Belgian Blue cows were dry- or wet-aged for up to 63 days at 2 °C. At different times, part of these samples was cut into steaks, vacuum packaged and stored during 4 days at 4 °C + 8 days at 8 °C. The following parameters were evaluated at different intervals: pH, tenderness (Warner–Bratzler peak shear force), color (CIE L*a*b*), myoglobin oxidation (K/S572:K/S525 ratio) and lipid oxidation (TBARS). The sensitivity of samples to pigment oxidation was influenced by the packaging during display. Aging time and packaging during display influenced lipid oxidation. Twenty-one days of aging allowed to achieve the maximum tenderness observed and would be compatible with a subsequent 12-day display under vacuum. A 12-day display period under shrinkable film is largely beyond the shelf life of meat under this condition. This study contributes new knowledge about Belgian Blue beef behavior when it is wet or dry aged. Further research will be conducted to study the microbiological quality of these meats. [less ▲]

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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 ▲]

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See detailDrawing technical contrasts to address prenatal testing
Thoreau, François ULg

Conference (2016, December 07)

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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 ▲]

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See detailConflict prevention measures in Belgium
Behrendt, Christian ULg

Conference (2016, December 05)

Conference given as part of the international "Shades Negotiation Program", organized by the Egmont Institute ; Brussels, House of Representatives, on December 5, 2016.

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See detailPourquoi un (énième) colloque sur le format epub ?
Dozo, Björn-Olav ULg

Conference (2016, December 05)

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See detailHow to use serology in Sexually Transmitted Infections
HUYNEN, Pascale ULg; LIBOIS, Agnes

Conference (2016, December 02)

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See detailQuelques réflexions autour d'un texte de Théodore Scaltsas
Dawans, Stéphane ULg; Houbart, Claudine ULg

Conference (2016, December 02)

Face à l’extension du champ de l’intervention sur l’existant et au brouillage des limites entre rénovation et restauration d’édifices et d’ensembles allant du monument historique au bâti générique, ancien ... [more ▼]

Face à l’extension du champ de l’intervention sur l’existant et au brouillage des limites entre rénovation et restauration d’édifices et d’ensembles allant du monument historique au bâti générique, ancien ou récent, il semble plus que jamais utile d’accepter la notion de bricolage conceptuel et de réfléchir à une « boîtes à outils » permettant aux futurs architectes de faire face à la complexité des enjeux de la réhabilitation. En effet, face à ceux-ci, les théories de la restauration monumentale qui sont enseignées dans les instituts et facultés d’architecture atteignent parfois leurs limites et nous semblent devoir être complétées par/confrontées à de nouveaux concepts ou théories susceptibles d’élargir et même de renouveler notre vision des choses. C’est ainsi que depuis plusieurs années, nous avons choisi de faire un pas de côté et d’interroger des champs aussi éloignés que la logique formelle, l’ontologie de l’art et les théories littéraires et travaillons actuellement à une anthologie critique de textes variés mais tous susceptibles d’intéresser les conservateurs (du patrimoine mobilier et immobilier) et donc aussi, les architectes intervenant sur l’existant. Parmi ces textes, oeuvres d’auteurs en grande partie méconnus dans le champ du patrimoine, « Identity, Origin and spatio-temporal continuity », du philosophe Théodore Scaltsas, professeur à l’université d’Edimbourg, et extrait d’une revue en grande partie écrite en langage mathématique, nous parait particulièrement intéressant à analyser lors du séminaire. En utilisant des exemples aisément transposables au milieu de l’architecture, il aborde notamment la question de l’intention d’une reconstruction de manière originale et interpellante, qui n’autorise plus les fréquents amalgames justifiant tout et n’importe quoi et émanant non seulement du monde économique mais aussi des milieux du patrimoine dits autorisés. Par ailleurs, il enrichit le débat sur l’authenticité d’une dimension peu prise en compte à ce jour et particulièrement éclairante dans le cas des productions modernes et contemporaines, qui constituent l’un des enjeux les plus actuels de la réhabilitation. [less ▲]

Detailed reference viewed: 30 (6 ULg)
Peer Reviewed
See detailDésir, mal d'enfant, stérilité
Naziri, Despina ULg

Conference (2016, December 02)

Detailed reference viewed: 33 (2 ULg)
Peer Reviewed
See detailSchizophrénie et hyperconscience : Une étude en première personne
Englebert, Jérôme ULg; Valentiny, Caroline

Conference (2016, December 02)

Detailed reference viewed: 50 (1 ULg)