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See detailM. MINÉ, Droit des discriminations dans l'emploi et le travail
Kéfer, Fabienne ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2016), (37), 1783

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See detailHybridation, intergénéricité et ironie dans “Arsène Schrauwen” d’Olivier Schrauwen
Crucifix, Benoît ULg; Meesters, Gert

in Neuvième art 2.0. (2016)

« La vraie vie, c’est ce qui se passe dans la tête quand on fait la vaisselle », ou « J’ai souvent une idée [de ce à quoi ressemblera ma prochaine histoire], mais généralement mon subconscient a d’autres ... [more ▼]

« La vraie vie, c’est ce qui se passe dans la tête quand on fait la vaisselle », ou « J’ai souvent une idée [de ce à quoi ressemblera ma prochaine histoire], mais généralement mon subconscient a d’autres projets ». Ces citations, tirées d’un récent entretien, sont typiques de la posture d’Olivier Schrauwen et indiquent directement qu’une histoire sur le Congo belge, dans ses mains, ressemblera à toute autre chose que les récits (post)coloniaux auxquels la bande dessinée s’est habituée. Paru en français en 2015 à L’Association, Arsène Schrauwen fait le récit halluciné du voyage au Congo qu’aurait effectué, comme le titre semble l’induire, le grand-père de l’auteur. En partant d’un contexte de production où la bande dessinée documentaire et autobiographique sont désormais bien ancrés, nous nous pencherons sur la façon dont Arsène Schrauwen se distingue de telles approches, souvent par l’absurde et l’ironie, mais aussi en invoquant des thèmes et motifs typiques des genres populaires qui ont dominés l’histoire de la bande dessinée. L’ouvrage de Schrauwen revendique ainsi une portée auto-réflexive qui s’étend d’autant plus à une réflexion comique sur le « langage » de la bande dessinée, un jeu qui sert le propos du livre à des fins plus profondes qu’il ne pourrait paraître. [less ▲]

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See detailLe contrat de travail et la prescription : cas particuliers
Cordier, Quentin ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2016)

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See detailOn the Variable Dilatancy Angle in Rocks Around Underground Galleries
Salehnia, Fatemeh ULg; Collin, Frédéric ULg; Charlier, Robert ULg

in Rock Mechanics & Rock Engineering (2016)

Correct estimation of the dilatant behavior of a rock has an essential role in a realistic numerical simulation of the fracturing threshold during the rock deformation process and its post-failure ... [more ▼]

Correct estimation of the dilatant behavior of a rock has an essential role in a realistic numerical simulation of the fracturing threshold during the rock deformation process and its post-failure response, based on experimental and field observations. This importance has been poorly treated in most of the numerical analyses dealing with the rock engineering common problems such as deep excavations. The dilatancy angle as a commonly used parameter for describing the dilatation response of a rock is mostly simplified to be a constant value. Contrarily, a literature review declares the inadequacy of this approach in those rock mechanics applications. In the present paper, a new formula for considering the variable dilatancy angle is presented which relates this parameter to the plastic shear strain in the course of a loading procedure. It is aimed at characterizing an evolution of the dilatant or contracting volumetric response of a rock as well as giving the possibility to simulate a dilatant/contracting transitional behavior. The model is applied to simulate the development of strain localization, in shear band mode, within the inevitable excavation damaged zone created around an underground opening in rock. It is illustrated that using the model of variable dilatancy angle in a deep excavation modeling could help to better reproduce the fractures development around the opening in the course of tunneling. [less ▲]

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See detailThe Green Grid Network and Trading Renewable Energy
Ernst, Damien ULg

Speech/Talk (2016)

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See detailContribution to the Characterization of Piston Expanders for Their Use in Small-scale Power Production Systems
Oudkerk, Jean-François ULg

Doctoral thesis (2016)

Piston expanders are well suited for small scale power generation (<50kW) using heat engines such as Ericsson engine or Organic Rankine Cycle (ORC) system. Both systems offer the possibility to use ... [more ▼]

Piston expanders are well suited for small scale power generation (<50kW) using heat engines such as Ericsson engine or Organic Rankine Cycle (ORC) system. Both systems offer the possibility to use renewable energy sources and are increasingly considered in light of the economic and environmental context. This thesis aims at contributing to the knowledge and the development of piston expanders by presenting modeling, simulation and experimental investigations. Two types of piston engine models are proposed. The first type (denoted as “detailed”) describes the shaft angle (or time) evolution of the state of the fluid in the control volume limited by the cylinder wall and the piston. The second type of model (denoted as “semi-empirical”) is based on theoretical indicator diagram. A calibration process is proposed and applied with the measurement collected on two different expanders. The detailed model is first used to simulate an Ericsson engine. The simulations allow for the optimization of the pressure ratio, the determination of the ratio between the swept volumes of the expander and the compressor, the computation of the valve timing and the evaluation of the potential performances. The main modifications made to turn an available Internal Combustion Engine (ICE) into an Ericsson engine are described. This prototype is then tested but did not run as expected. The identified reasons are a too high leakage rate, a too large cut-off ratio and a too low expander supply temperature. These three features led to insufficient pressure. Nevertheless, a compressor is used to rise the pressure up to 7 bar in order to test the expander part. This expander shows a maximal isentropic efficiency of 59% at 600 RPM with a pressure ratio of 5. A swash-plate expander integrated into an ORC using R245fa is also investigated in a wide range of operating conditions. Performance maps in terms of pressure ratio and rotational speed are given. Maximal reached isentropic efficiency is 54% at 2500 RPM for a pressure ratio of 10.5. Experimental results obtained on both expanders are analyzed with the same methodology to assess the importance of each source of losses. This methodology is based on the disaggregation of the isentropic efficiency into different factors. Each of these factors represents one source of losses. In-cylinder pressure measurements are performed in order to measure mechanical losses. Leakage effects are simulated with the detailed model. Finally, an Ericsson engine-based m-CHP unit and an ORC-based m-CHP unit using the swash-plate expander are simulated with the validated semi-empirical model. Ericsson engine system shows a 6.5% electrical efficiency while the ORC system shows en efficiency of 8.2%. For both systems, possible improvements are simulated. It is shown, among other things, that the benefit of an increase of the built-in volume is limited by the decrease of the mechanical efficiency. [less ▲]

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See detailL’âgisme chez les étudiants en médecine
Corvol, Aline; Missotten, Pierre ULg; Gentric, Armelle et al

Poster (2016, November)

Introduction: Des stéréotypes négatifs liés à l’avancée en âge sont fréquemment observés en population générale. Des études ont montré que ces stéréotypes sont plus puissants que ceux liés à l’origine ... [more ▼]

Introduction: Des stéréotypes négatifs liés à l’avancée en âge sont fréquemment observés en population générale. Des études ont montré que ces stéréotypes sont plus puissants que ceux liés à l’origine ethnique, au sexe ou à l’orientation sexuelle. Lorsqu’ils sont présents chez les soignants, ces stéréotypes peuvent entrainer des discriminations et limiter l’accès aux soins des personnes âgées (Schroyen et al., 2016). Il a en outre été démontré qu’un comportement d’aide injustifiée pouvait favoriser la perte d’autonomie chez une personne âgée. L’objectif de cette étude est d’évaluer la force des stéréotypes âgistes chez les étudiants en médecine et de rechercher les facteurs qui y sont associés. Méthodes: Un questionnaire écrit informatisé a été proposé aux étudiants en médecine des facultés de Rennes, Brest et Liège, de la 2ème à la 6ème année. Il associe trois mesures : l’Adaptation française de Fraboni Scale of Ageism, une tâche de fluence verbale à propos du vieillissement et de la jeunesse, et une mesure de la stigmatisation liée à l’âge par estimation de pourcentages. Résultats: Des données ont été obtenues pour 570 étudiants à Rennes et 485 à Liège; le recueil de données se poursuit à Brest. Les premières analyses confirment que l’âgisme est largement répandu chez les étudiants en médecine, avec des résultats globalement similaires à Rennes et Liège. Les étudiants de sexe masculins, ceux qui ont peu de contact avec des personnes âgées, ou qui ont des contacts jugés de mauvaise qualité, sont plus susceptibles d’exprimer des stéréotypes âgistes. Le fait d’avoir fait un stage dans un service de gériatrie ou d’avoir bénéficié d’un enseignement de la gériatrie ne semble pas influencer significativement ces stéréotypes. Conclusion: L’enseignement de la gériatrie aux étudiants en médecine doit prendre en compte la fréquence des stéréotypes âgistes. Nos résultats étant soumis à un biais de désirabilité sociale, des études portant sur les stéréotypes implicites (inconscients) seraient utiles. Une meilleure connaissance de l'âgisme et de ses déterminants chez les étudiants en médecine est nécessaire à l'élaboration d'approches pédagogiques susceptibles de limiter les conséquences de ces stéréotypes sur la qualité des soins aux personnes âgées [less ▲]

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See detailUn incunable de l’imagination : "La Conquête du Char de la Gloire" du père jésuite Pierre Le Moyne (1628)
De Marco, Rosa ULg

in Art et artistes dans l’espace haut-marnais (XIVe-début XXe siècles) (2016)

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See detailBreaking Barriers Between Arts: Bob Dylan’s Nobel Prize
Lombard, David ULg

in Culture, le Magazine Culturel de l'Université de Liège (2016), (10),

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See detailSatellites à l'appui d'outils d'aide à la décision dans l'agriculture: applications passées et futures
Wellens, Joost ULg

Conference given outside the academic context (2016)

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See detailScreening for genetic causes of GH hypersecretion
Rostomyan, Liliya ULg; Beckers, Albert ULg

Conference (2016, November)

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See detailResting-state Network-specific Breakdown of Functional Connectivity during Ketamine Alteration of Consciousness in Volunteers
BONHOMME, Vincent ULg; VANHAUDENHUYSE, Audrey ULg; Demertzi, Athina ULg et al

in Anesthesiology (2016), 125(5), 873-878

Background: Consciousness-altering anesthetic agents disturb connectivity between brain regions composing the resting-state consciousness networks (RSNs). The default mode network (DMn), executive control ... [more ▼]

Background: Consciousness-altering anesthetic agents disturb connectivity between brain regions composing the resting-state consciousness networks (RSNs). The default mode network (DMn), executive control network, salience network (SALn), auditory network, sensorimotor network (SMn), and visual network sustain mentation. Ketamine modifies consciousness differently from other agents, producing psychedelic dreaming and no apparent interaction with the environment. The authors used functional magnetic resonance imaging to explore ketamine-induced changes in RSNs connectivity. Methods: Fourteen healthy volunteers received stepwise intravenous infusions of ketamine up to loss of responsiveness. Because of agitation, data from six subjects were excluded from analysis. RSNs connectivity was compared between absence of ketamine (wake state [W1]), light ketamine sedation, and ketamine-induced unresponsiveness (deep sedation [S2]). Results: Increasing the depth of ketamine sedation from W1 to S2 altered DMn and SALn connectivity and suppressed the anticorrelated activity between DMn and other brain regions. During S2, DMn connectivity, particularly between the medial prefrontal cortex and the remaining network (effect size β [95% CI]: W1 = 0.20 [0.18 to 0.22]; S2 = 0.07 [0.04 to 0.09]), and DMn anticorrelated activity (e.g., right sensory cortex: W1 = −0.07 [−0.09 to −0.04]; S2 = 0.04 [0.01 to 0.06]) were broken down. SALn connectivity was nonuniformly suppressed (e.g., left parietal operculum: W1 = 0.08 [0.06 to 0.09]; S2 = 0.05 [0.02 to 0.07]). Executive control networks, auditory network, SMn, and visual network were minimally affected. Conclusions: Ketamine induces specific changes in connectivity within and between RSNs. Breakdown of frontoparietal DMn connectivity and DMn anticorrelation and sensory and SMn connectivity preservation are common to ketamine and propofol-induced alterations of consciousness. [less ▲]

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See detailDe positie van kinderen in het Belgisch nationaliteitsrecht - een verkenning
Wautelet, Patrick ULg

in Vonk, Olivier; Rutten, Susan; Simts, Jan (Eds.) et al Grootboek. Liber Amicorum prof. mr. Gerard-René de Groot (2016)

This contribution attempts to analyze whether the current law of Belgian nationality regarding children is in conformity with international standards and more in particular with the Council of Europe ... [more ▼]

This contribution attempts to analyze whether the current law of Belgian nationality regarding children is in conformity with international standards and more in particular with the Council of Europe Recommendation CM/Rec(2009)13 of the Committee of Ministers to member states on the nationality of children. [less ▲]

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See detailNational Forest Inventories - Assessment of Wood Availability and Use: Belgium (Wallonia)
Alderweireld, Matthieu; Rondeux, Jacques; Latte, Nicolas ULg et al

in Vidal, Claude; Alberdi, Iciar A.; Mateo, Laura Hernández (Eds.) et al National Forest Inventories - Assessment of Wood Availability and Use (2016)

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See detailPolyhydroxyurethane hydrogels: synthesis and characterizations
Gennen, Sandro ULg; Grignard, Bruno ULg; Thomassin, Jean-Michel ULg et al

in European Polymer Journal (2016), 84

Hydrogels based on polyurethane (PU) are promising (bio-) materials because of their bio- compatibility, biodegradation and excellent mechanical properties. In this publication, polyurethane hydrogels ... [more ▼]

Hydrogels based on polyurethane (PU) are promising (bio-) materials because of their bio- compatibility, biodegradation and excellent mechanical properties. In this publication, polyurethane hydrogels were produced for the first time by a non-isocyanate route by solvent-free step-growth copolymerization between a CO2-sourced hydrophilic polyethy- lene glycol bi-cyclic carbonate with diamines in the presence of a cross-linker. Kinetic of poly(hydroxyurethane) (PHU) synthesis was monitored by ATR-IR and the chemical cross-linking was confirmed by rheology and gel contents measurements. Hydrogels were obtained by immersion of PHUs in water and the influence of the diamine/cross-linker ratio and the nature of diamine on the water swelling and compression properties (compression modulus, strain and stress at break) of PHU hydrogels was evaluated. Additionally, the compression properties of the hydrogels were improved by the addition of Montmorillonite as nanofiller in the PHU formulation. This work opens new application fields for CO2-sourced PHUs. [less ▲]

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See detailDioxins! Hunting the Great White Shark
Focant, Jean-François ULg

Scientific conference (2016, November)

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See detailAdvance sin Instrumental Techniques
Focant, Jean-François ULg

Scientific conference (2016, November)

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