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See detailEntretien: "La déradicalisation, c'est une espèce de fantasme politique"
Demonty, Bernard; Garcet, Serge ULg

Article for general public (2015)

L'article propose un entretien dans lequel nous donnons notre point de vue d'expert sur la déradicalisation.

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See detailLa guerre comme modèle des rapports de pouvoir. Question à Judith Butler
Caeymaex, Florence ULg

Conference (2015, November 16)

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See detailHydro-mechanical analysis of the fracturing induced by the excavation of nuclear waste repository galleries using shear banding
Pardoen, Benoît ULg

Doctoral thesis (2015)

The long-term management of high-level nuclear wastes is envisaged by deep geological repository. Due to the safety function of the host formation, the behaviour of the Excavation Damaged Zone (EDZ) that ... [more ▼]

The long-term management of high-level nuclear wastes is envisaged by deep geological repository. Due to the safety function of the host formation, the behaviour of the Excavation Damaged Zone (EDZ) that develops around underground galleries during their drilling is of paramount importance. The EDZ is dominated by fracturing process which engenders irreversible modifications of the hydro-mechanical properties of the porous rock. In this zone, a significant hydraulic permeability increase of several orders of magnitude is observed. It may alter the safety function of the host formation by creating preferential flow paths for the migration of radionuclides towards the biosphere. Consequently, the understanding and the prediction of the EDZ hydro-mechanical behaviour are crucial issues for the long-term management of nuclear wastes. Among the different low-permeability media that are envisaged for the deep repository, the Callovo-Oxfordian claystone is studied. The fracturing behaviour, the water transfers, and the coupled processes that occur around the underground galleries are most particularly addressed, especially in the EDZ. The fractures induced by the excavation process are reproduced with strain localisation in shear bands. An appropriate model allowing to properly reproduce the strain localisation in geomaterials with finite element methods is used. It is an enhanced model for microstructure media called the coupled local second gradient model and which involves a regularisation method. Its application is extended to unsaturated anisotropic rocks with compressible solid grains. The numerical modelling of the fractured zone with shear banding provides information about its shape, extent, fracturing structure, and behaviour that are in good agreement with in situ measurements. In particular, the shape of the EDZ in the Callovo-Oxfordian claystone is governed by its anisotropy and the gallery convergence strongly depends on the appearance of the shear bands. The fluid transfers and the coupled processes are investigated in the EDZ. The impact of the rock fracturing on its hydraulic properties is addressed by taking into account strain localisation effects at macroscale. The evolution of the intrinsic water permeability is expressed by a strain-dependent relation which engenders a more pronounced increase of the permeability inside the shear bands. In agreement with experimental measurements, an important increase is reproduced in the excavation damaged zone. After gallery excavation, the hydraulic transfers in the rock surrounding the galleries are investigated by considering the interaction between the rock and the gallery air. These transfers are studied at large-scale during the reproduction of gallery air ventilation. Depending on the air hygrometry, the gallery ventilation implies drainage and desaturation of the surrounding rock which affect the shear banding development. The hydraulic transfers in the rock which depend on the water exchanges at gallery wall are also studied. The proposed approach aims to highlight the important hydro-mechanical aspects to take into account for the reproduction of the EDZ behaviour in unsaturated biphasic media with shear banding. The focus is resolutely on the large-scale numerical modelling of the EDZ as well as on the reproduction of the mechanical and hydraulic experimental measurements performed around galleries. [less ▲]

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See detailField data on the little known and endangered Lepilemur mittermeieri
Wilmet, Leslie ULg; Schwitzer, Christoph; Beudels-Jamar, Roseline C. et al

in Journal of Primatology (2015), 4(2),

Lepilemur mittermeieri is a very little known sportive lemur of the Ampasindava peninsula of Madagascar, presently regarded as endangered. On the basis of genetic material only, obtained from three ... [more ▼]

Lepilemur mittermeieri is a very little known sportive lemur of the Ampasindava peninsula of Madagascar, presently regarded as endangered. On the basis of genetic material only, obtained from three individuals collected at the same locality. No observation confidently allocated to the species has been reported since. The objectives of our research were to verify that the sportive lemurs found in forests of the Ampasindava peninsula beyond the type-locality of Lepilemur mittermeieri belonged to the same species as the type, to provide morphological and behavioural data for populations confidently attributed to L. mittermeieri and to obtain for these populations preliminary evaluations of density variations within the peninsula. Our surveys were undertaken in March and April 2014 in remnant forest patches of the western part of the Ampasindava peninsula. Linear transects by night and punctual observations by day were conducted. A total of 54 animals were seen along nine transects situated in four forest patches, two at low altitude and two at high altitude. All animals examined and photographed appeared similar, and the impression was gained that a single taxon was involved. Genetic material collected from one dead specimen proved identical to the type of L. mittermeieri which confirmed the identity of the populations we observed. It thus appears that L. mittermeieri is indeed the only sportive lemur present on the peninsula and that it occurs in several forest remnants. We endeavoured to get evaluations of the density and abundance of the species in the four forest patches we studied. We used KAIs (Kilometric Abundance Indices) to evaluate and compare relative densities, and Buckland’s distance sampling method to evaluate absolute densities. The latter suggested a density of 1.9 animals/ha, a result that must, however, be taken with caution. [less ▲]

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See detailBien soigner l'arthrose: un enjeu capital pour notre société!
Henrotin, Yves ULg

Conference (2015, November 16)

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See detailSustainable Development Goals, Implications on Nordic Diaspora
Gsir, Sonia ULg

Conference given outside the academic context (2015)

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See detailDeterminants of Access to Agricultural Credits for Small Scale Farmers in the Southern Province of Rwanda
Musabanganji, Edouard ULg; Antoine, Karangwa; Lebailly, Philippe ULg

in Book of Proceedings Sixth International Scientific Agricultural Symposium "AgroSym 2015" (2015, November 15)

This study investigated the determinants of financial inclusion for small scale farmers by focusing on the access to formal and informal agricultural credits in the Southern Province of Rwanda. Data were ... [more ▼]

This study investigated the determinants of financial inclusion for small scale farmers by focusing on the access to formal and informal agricultural credits in the Southern Province of Rwanda. Data were collected from 310 farmers from Huye and Nyamagabe districts through an open-ended structured questionnaire and analysed using the binary logistic regression method. The major findings, on one hand, showed that among the requested and approved agricultural loans, 87.2% and 12.7% were from informal and formal financial institutions respectively. Among those who accessed agricultural credits, 59.7% were from Huye and 40.3% from Nyamagabe. On the other hand, it was revealed that the household characteristics and the community attributes are the most important determinants. Those household characteristics include household income and expenditure, Ubudehe socio-economic category of the household, off-farm employment and the size of the land owned by the household whereas community attributes involve residence area, transport and informal financial services availability. Regarding farmer characteristics, the education level was found to be the only factor affecting the smallholder farmers' access to agricultural credit. In light of the findings, it was recommended to conduct sensitization sessions focusing on the importance of agricultural credits for smallholder farmers especially in the areas with high level of poverty. In addition, there is need to work on alleviating the formal agricultural credits access barriers, and to conduct a study on the dynamics of informal and formal agricultural credits up take and usage by smallholder farmers to explore all dimensions of financial inclusion in the study area. [less ▲]

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See detailLa Russie, ce dangereux ami pour lutter contre le djihadisme wahhabiste
Ernst, Damien ULg; Hermans, Michel ULg

Article for general public (2015)

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See detailSynthesis of polyphosphodiesters by ring-opening polymerization of cyclic phosphates bearing allyl phosphoester protecting groups
Clément, Benoit; Molin, Daniel G.; Jérôme, Christine ULg et al

in Journal of Polymer Science. Part A, Polymer Chemistry (2015), 53(22), 2642-2648

The allyl phosphoester group is shown to be a protecting group for the synthesis of anionic polyphosphodiesters. Our strategy relies on the synthesis of a cyclic phosphate monomer bearing a pendant allyl ... [more ▼]

The allyl phosphoester group is shown to be a protecting group for the synthesis of anionic polyphosphodiesters. Our strategy relies on the synthesis of a cyclic phosphate monomer bearing a pendant allyl phosphoester group, its easy purification by fractional distillation, its organocatalyzed ring-opening polymerization by 1,8-diazobicyclo[5.4.0]undec-7-ene (DBU) and 1-[3,5-bis(trifluoromethyl)phenyl]-3-cyclohexyl-thiourea (TU). Finally, the deprotection of the allyl phosphoester group is carried out by reaction with sodium benzenethiolate in the absence of any detectable degradation. [less ▲]

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See detailComment mieux comprendre la radicalisation adolescente ? - Carte blanche
Garcet, Serge ULg

Article for general public (2015)

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See detailLaser cladding as repair technology for Ti6Al4V alloy: Influence of building strategy on microstructure and hardness
Paydas, Hakan ULg; Mertens, Anne ULg; Carrus, Raoul et al

in Materials & Design (2015), 85

Laser cladding is a metal deposition technique used to fabricate or repair components made from high value metallic alloys. In the present work Ti-6Al-4V deposits with variable thickness are made to ... [more ▼]

Laser cladding is a metal deposition technique used to fabricate or repair components made from high value metallic alloys. In the present work Ti-6Al-4V deposits with variable thickness are made to assess the use of laser cladding as a repair technology. Both the effect of the building strategy (BS) and the incident energy (IE) on the metallurgical characteristics of the deposits in relation to their complex thermal history have been studying. It is shown that for the configuration consisting in a decreasing track length (DTL) under high IE, a gradient of cooling rate exists that leads to the presence of different phases within the microstructure. Conversely homogeneous microstructures are present either for the configuration with a constant track length (CTL) under high IE, and for the strategy obtained from a DTL under low IE. Depending on the possible heat accumulation the nature of the phases are determined together with hardness maps within the deposits. Some qualification criteria are set prior to tensile tests to selected the adequate candidate-deposit that does not weaken the cladded material when it is stressed. A thermo-metallurgical scheme is proposed that helps understanding the effect of both the BS and the IE on the microstructure. [less ▲]

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See detailThe Q-Codes. From Dunedin 2007 to Hyderabad 2015
Jamoulle, Marc ULg

Conference (2015, November 14)

Aim Coding abstracts of communications of GPs during congress allows more efficient exchange of information through a specific indexing process. Coding with Core Content Classification in General Practice ... [more ▼]

Aim Coding abstracts of communications of GPs during congress allows more efficient exchange of information through a specific indexing process. Coding with Core Content Classification in General Practice/Family Medicine (3CGP/FM), an association of ICPC and of a new tool called Q-Codes means identifying the main concepts the writer is willing to share in his/her contribution. This is called ‘text classification’ or ‘topic list building’ in computer sciences and ‘qualitative data analysis’ in cognitive sciences. The GP is dealing with issues concerning the patient and with issues concerning the management of the job. Symptoms, diagnosis and process are up to what we will call clinical activities. General management as well as ethical or quality related issues are up to what we will call non-clinical or managerial activities. Clinical activities will be identified in the abstracts by the use of the International Classification of Primary Care second edition, electronic, version 5 (ICPC-2 e ver5). Managerial activities will be identified in the abstracts by the use of the Q-Codes, version 2.1, 2015 which we are explaining now in detail. Method The European cross-lingual portal of health terminologies for indexing and searching Web resources (www.hetop.eu) is using the OWL 2 Web Ontology Language, relying for instance to Bioportal and connected to the world of the Internet of data. We have developed the terminological content of 183 items called Q-codes using a graphic Interface, filling the knowledge base with relevant information about the concept studied, linking them to professional terminologies like MeSH, or to lay ones like Babelnet and DBpedia, if any, and relying them to top bibliographic free full text citations of the domain. Results 183 Q-Codes have been designed and 177 extensive terminological records are available online, for now for beta testers. The whole process is described on http://docpatient.net/3CGP. The ongoing version of the Q-codes is available here in 6 languages http://docpatient.net/3CGP/Q-Codes_ver_2_2.pdf The poster present a general overview of the terminological development. [less ▲]

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See detailDer Wiederaufbau der deutsch-belgischen Beziehungen nach 1945
Brüll, Christoph ULg

Conference (2015, November 14)

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See detailDu satellite au terrain. Observation de la surface terrestre et processus géographiques
Cornet, Yves ULg

Scientific conference (2015, November 14)

la journée de enseignants des 6ème Journées de la Géographie Belge (VUB, 14 novembre 2015). Proposition d’Yves CORNET (CC, Photogrammétrie et télédétection, Geomatique, ULg) Sujet : « Du satellite au ... [more ▼]

la journée de enseignants des 6ème Journées de la Géographie Belge (VUB, 14 novembre 2015). Proposition d’Yves CORNET (CC, Photogrammétrie et télédétection, Geomatique, ULg) Sujet : « Du satellite au terrain » Forme : Atelier Durée totale : 1h30 Résumé : Je proposerai tout d’abord un bref rappel des notions de « couleur » (vrai couleur, fausse couleur, fausse couleur de synthèse) en visualisation d’images polygéniques enregistrées par des capteurs satellitaires récentes disponibles gratuitement dans les archives de l’USGS et couvrant le territoire wallon (ex. capteur OLI à bord de Landsat 8). Ensuite, j’élargirai la discussion en établissant le lien avec le concept de signature et résolution spectrales pour en arriver à deux applications très exploitées par les géographes et qui reposent sur ces concepts. La première application est la classification d’image. La seconde application est l’extraction de paramètres bio-géo-physiques à partir d’images multi-spectrales en exploitant les parties du spectre permettant cette détermination (ex. couleur des océans - rapports de réflectance entre les canaux visibles permettant de mettre en évidence l’absorption du rayonnement lumineux par la chlorophylle). Nous limiterons notre discours à la partie du spectre dans laquelle le soleil éclaire la surface terrestre (visible et proche infra-rouge) qui est celle la plus facile à appréhender pour des écoliers du secondaire. Ensuite pendant l’atelier, j’exploiterai de façon intuitive l’analyse graphique car elle constitue une spécificité de formations scientifiques et, malheureusement, je constate depuis plusieurs années, de la part de la majorité de nos étudiants, une réelle incapacité de s’exprimer de cette façon. Il me semble que cette compétence peut être aisément exercée par des exercices simples tels que ceux que je proposerai en limitant au maximum l’accès à des outils logiciel. Les données nécessaires à ces analyses graphiques seront fournies ou extraites d’images à l’aide d’outils logiciels de visualisation d’images gratuits qui seront mis à la disposition des enseignants pour qu’ils puissent préparer de nouvelles activités dans leur classe. Les réalisations graphiques seront effectuées sur papier quadrillé. Elle permettront par exemple de représenter la position d’un pixel dans l’espace multispectral (diagramme de dispersion bi-variés combinant les canaux 2 par 2 et éventuellement tri-variés en combinant les canaux par 3), de construire des courbes de signature spectrale de différents type de couverture du sol dans différents contextes topographique et donc dans des conditions d’illumination différentes, de construire des courbes de signature spectrales d’une eau non turbide présentant des concentration en chl-a variable (données fournies). Nous accorderons une attention particulière à la signification physique des valeurs reportées sur les différents axes (unités, ordres de grandeur, variations) et un protocole d’interprétation de ces graphiques sera ensuite proposé. D’une part, nous comparerons les signatures spectrales de différents types de couverture du sol généralement reconnus par classification d’image (surface herbeuse, canopée, sol nu, surface bétonnée, surface macadamisée, eau …). Pour certains types de couverture du sol, nous mettront en évidence l’effet topographique qui est d’autant plus marqué que la longueur d’onde exploitée se rapproche du proche infra-rouge en raison de la réduction de la diffusion du rayonnement solaire incident pour les plus grande longueurs d’onde du visible et le proche infra-rouge que pour les courtes longueur d’onde du visible. Pour limiter la complexité des interprétations, nous limiterons les analyses à des données instantanées (pas de variation temporelle !!). D’autre part, dans la partie consacrée à l’analyse de la couleur des océans nous proposeront la construction différente graphique (diagramme de dispersion ou validation et histogrammes) permettant de mettre en relation le résultat de l’extraction de paramètres bio-optiques de l’eau depuis des images satellitaire et son correspondant mesuré sur le terrain. Nous expliquerons ainsi la signification graphique des notions de biais, d’imprécision et d’incertitude. Nous établirons alors quelques liens entre le processus d’acquisition des images satellitaires (angle d’observation, champs instantané d’observation du capteur satellitaire, résolution radiométrique, influence de l’état de surface des mers et ses interaction avec la géométrie de l’éclairement solaire vis-à-vis de l’observation, altération atmosphériques …) et la signification d’un échantillon des valeurs de référence sur le terrain (campagne de mesure de la concentration de chlorophylle en mer ou dans des lac, dynamique spatiale et temporelle, représentativité spatiale et temporelle). [less ▲]

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See detailTabagisme et endocrinologie, bilan glucidique, y inclus le diabète.
VALDES SOCIN, Hernan Gonzalo ULg

Scientific conference (2015, November 14)

Tabac et Endocrinologie Résumé du Cours du Dr H Valdes-Socin Endocrinologie. CHU de Liège Presque un tiers des hommes et des femmes fument régulièrement en Belgique. Hormis les effets délétères bien ... [more ▼]

Tabac et Endocrinologie Résumé du Cours du Dr H Valdes-Socin Endocrinologie. CHU de Liège Presque un tiers des hommes et des femmes fument régulièrement en Belgique. Hormis les effets délétères bien connus de la fumée de tabac sur la sphère ORL cardio-pulmonaire et son association avec diverses néoplasies, on reconnait aujourd’hui des conséquences sur le système neuroendocrinien, sur l’axe thyroïdien et reproducteur, qui font l’objet de cet article. Non seulement les fumeurs actifs, mais également le fœtus porté par une mère fumeuse et les fumeurs passifs exposés à la fumée de tabac, sont à risque d’importants troubles de santé. Le tabac est un facteur reconnu de risque de survenue d’ophtalmopathie basedowienne. Quelques uns des composants actifs du tabac comme les thiocyanates sont goitrigènes. Au niveau reproducteur, le tabac est un facteur responsable d’infertilité chez les hommes comme chez les femmes. Chez les bébés issus de parents fumeurs il existe un risque plus élevé de présenter une mort subite. Ces conséquences constituent un enjeu majeur de santé publique. Une campagne pour le sevrage tabagique a été lancée par le Service Fédéral de Santé Publique et par l’Inami en Belgique. [less ▲]

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See detailFungal skin infections: from the clinic to the laboratory
Hayette, Marie-Pierre ULg

Conference (2015, November 14)

Superficial fungal infections are largely represented in the world population and are mainly caused by dermatophytes. Clinical signs can be confusing and it is important to get a rapid diagnostic to apply ... [more ▼]

Superficial fungal infections are largely represented in the world population and are mainly caused by dermatophytes. Clinical signs can be confusing and it is important to get a rapid diagnostic to apply the right treatment.The diagnostic procedures are still culture-based methods but molecular technologies are recently available under commercial kits and will be probable part of a new algorithm in the laboratory diagnosis. [less ▲]

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See detailDe Freaks à Decasia, de l'image du monstre à l'image monstrueuse
Jousten, Lison ULg

Conference (2015, November 13)

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