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See detailQuel est l'intérêt du test de Pak chez les patients lithiasiques
Castiglione, Vincent ULg; Tostivint, Isabelle; Inaoui et al

Conference given outside the academic context (2016)

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See detailTransplantation hépatique à Liège: 1986-2016
DETRY, Olivier ULg

Scientific conference (2016, May 25)

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See detailAnalyse de la potentialité des outils d’auto-organisation en Wallonie : l'exemple d’un habitat groupé liégeois, les Zurbains
Dethier, Perrine ULg; Halleux, Jean-Marie ULg

Conference (2016, May 25)

La régénération urbaine doit faire face à de nombreux obstacles. Parmi ceux-ci, les plus significatifs sont la réduction des finances publiques ainsi que des obstacles plus structurels comme la captation ... [more ▼]

La régénération urbaine doit faire face à de nombreux obstacles. Parmi ceux-ci, les plus significatifs sont la réduction des finances publiques ainsi que des obstacles plus structurels comme la captation des plus-values foncières pour financer les infrastructures publiques, la coopération entre le secteur public et privé ou la complexité croissante des projets par l’augmentation des acteurs concernés (commune, région, propriétaires fonciers, promoteurs, développeurs, habitants…). Afin de répondre à ce contexte changeant, de nombreuses villes, notamment américaines, anglaises ou néerlandaises, mettent en place des outils d’auto-organisation (‘Buisness improvement district’, ‘tax increment financing’, …) (van der Krabben et Needham, 2008 ; Meerkerk et al., 2013 ; Peyroux et al., 2012 ; Squires et Lord, 2012)1. Dans cette recherche, nous définissions le terme d’auto-organisation comme : « l’émergence et le développement d’initiatives naissant d’un réseau construit en dehors des institutions gouvernementales ou autres et qui peut se rattacher ultérieurement à ces institutions » (Huygen et al., 2012)2. Quatre caractéristiques centrales distinguent le concept d’auto-organisation d’autres formes de participation : les motivations intrinsèques des acteurs, l’organisation par le biais d’un leadership pertinent, l’autonomie vis-à-vis des institutions et la spontanéité et créativité. Alors que dans certains pays, les outils d’auto-organisations deviennent courants, peu d’exemples sont présents en Wallonie. Pourtant, ils pourraient répondre, en partie, aux problèmes de recyclage urbain mis en évidence (Halleux et al. 2004)3. Par le champ de l’économie comportementale, nous étudierons l’exemple d’un habitat groupé liégeois, les Zurbains. « L’économie comportementale est un champ de l’économie qui se fonde sur le comportement des êtres humains observé dans la réalité et/ou en laboratoire afin d’expliquer les choix économiques des acteurs économiques » (Hanne, 2012)4. Ce courant économique remet en cause le concept l’Homo oeconomicus, la représentation théorique du comportement humain en économie néo-classique. Les Zurbains sont un projet d’habitat groupé sur une vaste friche (8 500 m²) située dans un quartier populaire de Liège, Saint-Léonard. En 2005, vingt-six ménages font l’acquisition de ce terrain dans le but d’y réaliser un ensemble de logements basse énergie. Il faudra attendre 9 ans entre l’achat du terrain et l’installation des premiers habitants. Par l’analyse de trois grandes composantes du comportement économique, nous essayerons de comprendre quels ont été les freins au développement du projet et comment les comportements des acteurs ont influencé la réussite du projet. L’analyse portera sur le partage des risques, la confiance entre les acteurs et l’évolution de coopération (inter et extra groupe). Le projet présente de nombreux intérêts à la fois individuels (logement neuf en centre urbain, économie d’échelle) et collectifs (réhabilitation d’une friche, aide financière régionale pour la commune pour l’aménagement des espaces publics alentours). Cependant son développement a été confronté à de nombreux obstacles : la prise de risque prise due au manque d’expertise dans le montage de projet urbain, une rupture de confiance entre les maîtres d’œuvre et le maître d’ouvrage, une collaboration pas toujours évidente entre le privé (les Zurbains) et le public (la ville ou les gestionnaires des impétrants). Sur base de rencontres avec les acteurs, il s’agira dès lors de dégager les forces et les faiblesses des acteurs wallons dans le développement de projet auto-organisé et d’analyser la potentialité de ce type de projet. [less ▲]

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See detailLa distribution par des véhicules électriques
Bay, Maud ULg; Limbourg, Sabine ULg

Scientific conference (2016, May 25)

The objective of vehicle routing problems is to design a set of efficient vehicle routes to provide goods from a depot to a set of customers satisfying specific constraints. Classical variants of these ... [more ▼]

The objective of vehicle routing problems is to design a set of efficient vehicle routes to provide goods from a depot to a set of customers satisfying specific constraints. Classical variants of these problems consider that routes are performed by internal combustion engine vehicles. These vehicles have a long and easy-to-restore driving range. However, due to the short driving range, long battery recharging times and the limited availability of charging infrastructure, routing algorithms for EV need to be developped. Maximizing the driving range of the vehicle leads to an examination of the main factors in energy consumption which are: the mass of the vehicle and its payload, engine efficiency, vehicle speed, the drive pattern, road grade, and vehicle recharge ability while driving. Results from this research will provide an optimal management of urban logistics where night delivery, through the use of those silent vehicles, remains one of the main benefits. [less ▲]

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See detailL'effet de l'écrouissage rotationnel sur le comportement des sols argileux
Ahayan, Sanae ULg; Yin, Zhen-Yu; Kotronis, Panagiotis et al

Conference (2016, May 25)

Induced anisotropy is a constitutive feature of clays that can be introduced through a proper "Rotational hardening law" allowing the rotation of the yield and the potential plastic surfaces in the stress ... [more ▼]

Induced anisotropy is a constitutive feature of clays that can be introduced through a proper "Rotational hardening law" allowing the rotation of the yield and the potential plastic surfaces in the stress space. Two rotational hardening laws are studied in this paper. Validation is provided using the results of a drained triaxial test of a Finnish clay. Finite Elements simulations of a circular rigid footing considering an isotropic and anisotropic constitutive laws are presented. The objective is firstly to identify the influence of the isotropy assumption in geotechnical design and secondly to study the effect of different hardening laws on the foundation behavior. [less ▲]

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See detailDenCity: Zero Energy Light Weight Construction Households for Urban Densification
Amer, Mohamed ULg; Attia, Shady ULg

in Rencontres Universitaires de Génie Civil de l'AUGC (2016, May 25)

This paper is a part of an ongoing research in the field of sustainable urban densification through providing innovative solutions for zero energy light weight construction. The focus aim of this research ... [more ▼]

This paper is a part of an ongoing research in the field of sustainable urban densification through providing innovative solutions for zero energy light weight construction. The focus aim of this research is to identify the gaps in the construction solutions for roof stacking, to feed in the innovation pipeline of the European construction landscape in the coming years. This paper presents a comprehensive review of different case studies and efforts in the field of roof raising and its repetition potentials. Based on a structured review, 8 different cases from three different European countries were sorted, placing a variety of methods in comparison with each other. The main contribution of this review lies in the analyses of the existing information in this field and the classification of the different validated methods and approaches that has been used. Finally, despite the existing challenges, it was found that the concept of roof stacking can be widely spread and applied in different contexts. Future research is going to investigate possible solution and to formulate structured scientific approaches to widen its application. [less ▲]

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See detailHow to improve the valorisationprocess of End-Of-Life vehicles? LCA as a tool to help decision
Belboom, Sandra ULg; Lewis, Grégory; Bareel, Pierre-François et al

Conference (2016, May 24)

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See detailComportement des structures soumises au feu
Gernay, Thomas ULg

Learning material (2016)

Les incendies représentent une sollicitation importante pouvant agir sur les bâtiments et autres structures du génie civil. Ce cours vise à donner un aperçu de la problématique du feu vis-à-vis des ... [more ▼]

Les incendies représentent une sollicitation importante pouvant agir sur les bâtiments et autres structures du génie civil. Ce cours vise à donner un aperçu de la problématique du feu vis-à-vis des structures et de la manière dont on peut concevoir ces dernières afin qu’elles assurent la sécurité des biens et des personnes en cas d’incendie. Les thèmes abordés couvriront la description des actions thermiques liées au développement d’un incendie et le comportement thermique et mécanique des matériaux à haute température. Les différents moyens de conception anti feu seront présentés ainsi que les méthodes de calcul pouvant mener à un dimensionnement viable face à cette sollicitation exceptionnelle. Finalement, le cours présentera des développements récents en ingénierie de la sécurité incendie et leur implémentation dans des projets réels de grande envergure. [less ▲]

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See detailLife cycle assessment of hemp concret blocks
Groslambert, Sylvie ULg; de Mahieu, Jean-Baptiste; Léonard, Angélique ULg

Poster (2016, May 24)

Buildings notably contribute to global environmental negative impacts due to consumption of both embodied energy and natural resources as well as various emissions during their whole life cycle. It is ... [more ▼]

Buildings notably contribute to global environmental negative impacts due to consumption of both embodied energy and natural resources as well as various emissions during their whole life cycle. It is therefore necessary to develop practices to reduce these impacts, mainly by reducing the part of non-renewable resource in material as well as by ensuring the lowest energy consumption possible during their lifetime. New developments in natural fibres and their use in insulating materials can lead to significant improvement in building environmental impact. For this purpose, assessment of environmental performance is needed to support both the design and the production of (new) fibre based insulation solutions. In this context, the Life Cycle in Practice (LCiP) project helps SMEs to reduce the environmental impacts of their products and services across the entire life cycle. Within the frame of this project, Isohemp (BE) hemp concrete block impact is evaluated in a cradle-to-gate LCA. Functional unit is a pallet of hemp concrete blocks ready for shipping. It represents about 1.3 m³ of blocks. Hemp blocks are made by pressing a mix of hemp shives, hydraulic and hydrated limes, and water. Long term carbon storage due to lime carbonation induces a large benefit in Climate Change (CC) category. The balance of the CC indicator for hemp cultivation is also favorable due to carbon dioxide uptake by the photosynthesis occurring during the plant growth. Life Cycle Assessment of hemp concrete blocks ready to ship has also highlights some improvements that can easily be made at the packaging level in order to lower the global environmental impact and increase the sustainability of this insulation material. Data are processed in SimaPro 8 software, with Ecoinvent 3 and ELCD 3 databases, and analyzed with the CML IA method. This method is compliant with the indicators required by EN15804 standard in order to communicate on the environmental performance of Isohemp blocks. [less ▲]

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See detailZinc and Iron interplay in Arabidopsis relatives
Hanikenne, Marc ULg

Conference (2016, May 24)

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See detailPeptidoglycan fragments separation by CE/LC-MS
Boulanger, Madeleine ULg; Delvaux, Cédric ULg; Far, Johann ULg et al

Poster (2016, May 24)

In Bacillus licheniformis 749/I, the induction of BlaP beta-lactamase relies on a complex regulation system. During this process, the intracellular repressor BlaI is inactivated by a dipeptide coming from ... [more ▼]

In Bacillus licheniformis 749/I, the induction of BlaP beta-lactamase relies on a complex regulation system. During this process, the intracellular repressor BlaI is inactivated by a dipeptide coming from the peptidoglycan (PG) degradation via an “AND Gate” regulation. This regulation involves the cellular stress induced by the beta-lactam, the membrane receptor BlaR1 and the PG turnover. Briefly, the induction occurs when the extracellular domain of BlaR1 is acylated by the antibiotic which leads to a reorganization of the transmembrane segments and the receptor autocleavage. Simultaneously, the beta-lactam partially inhibits the penicillin-binding protein 1 (PBP1), triggering increased PG turnover and accumulation of PG fragments. Some of these fragments could enter in the cytoplasm and undergo enzymatic degradations which lead to the formation of the pro co-activator (tripeptide L-Ala-D-Glu-m-A2pm). This pro co-activator generates the co-activator, the dipeptide D-Glu-m-A2pm. Nowadays the nature and the concentration of PG fragments inside the cytoplasm are unknown. Therefore, the development of different analytical methods is required in order to identify those cytoplasmic fragments. In this poster, three different ways to separate PG fragments are discussed. [less ▲]

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See detailLife cycle assessment of hemp concret blocks
Groslambert, Sylvie ULg; de Mahieu, Jean-Baptiste; Léonard, Angélique ULg

Conference (2016, May 24)

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See detailAbnormal bodily experiences in schizophrenia: a phenomenological study
lancellotti, Elisa; Englebert, Jérôme ULg

Poster (2016, May 24)

Our study focuses on Abnormal Bodily Experiences [ABE] in people with schizophrenia. We have created a specific questionnaire for this study – based on the study of Stanghellini et al. (2012) and the ... [more ▼]

Our study focuses on Abnormal Bodily Experiences [ABE] in people with schizophrenia. We have created a specific questionnaire for this study – based on the study of Stanghellini et al. (2012) and the third dimension of the EASE scale (body experiences) (Parnas et al. 2005). Our research follows an analytical method called “empirical-phenomenological”. Our population is made up of 50 schizophrenic subjects. The average age of subjects was 37 years. There are no exclusion criteria regarding gender or control sample. Analyzes are qualitative. We observed that ABE are very present symptoms in people with schizophrenia. Indeed, in our sample, only one patient was asymptomatic. We also observed that all categories and subcategories were present in our sample. These results should help to refine and clarify the diagnosis of schizophrenia and open up significant opportunities for psychotherapeutic dimension. [less ▲]

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See detailA phenomenological approach of anorexia nervosa
Minguet, Eugénie; Englebert, Jérôme ULg; Helinski, Adam et al

Poster (2016, May 24)

Introduction: from a phenomenological perspective, anorexic female patients seem to experience difficulties regarding the subjective feeling of their own body (embodiment) and their personal identity ... [more ▼]

Introduction: from a phenomenological perspective, anorexic female patients seem to experience difficulties regarding the subjective feeling of their own body (embodiment) and their personal identity, which lead to an intersubjectivity impairment within social interactions. Following these findings, this study investigates the “body-for-others” concept (Sartre, 1943) and altruistic hypotheses from the ethologist Albert Demaret (1973) in a sample of anorexic female patients. Two main hypotheses are tested: anorexic patients are expected to define themselves mostly through the gaze of others and as more altruistic than control participants. Method: this study included 67 anorexic female patients (based on the DSM-IV criteria) and 246 control female participants. Three self-reported questionnaires were used: the Eating Disorder Inventory: EDI-II of Garner (French version), the Identity and Eating Disorders questionnaire: IDEA of Stanghellini (French version translated and adapted by us) to assess the “body-for-others” concept and 17 complementary items for the altruistic dimension. Mann-Whitney non-parametric tests were used to compare the two groups. Results: results show that anorexic patients obtain higher scores than the control group for the three questionnaires (p<0,001 for all measurements). Discussion: the IDEA questionnaire enriches the knowledge relative to the body-self relationship and the first-person perspective, which is essential for a phenomenological approach. Furthermore, the promising results concerning the altruistic dimension in anorexia nervosa should be evaluated in future research. Nevertheless, a better validity of the items assessing the altruistic dimension is needed. [less ▲]

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See detailHéboïdophrenia: The hazardous interplay of psychosis and psychopathy
De Page, Louis; Englebert, Jérôme ULg

Poster (2016, May 24)

Introduction The diagnostic entity of heboidophrenia has been consigned to oblivion despite its clinical, prognostic, criminogenic value. At the core of this diagnosis lies specifics interactions between ... [more ▼]

Introduction The diagnostic entity of heboidophrenia has been consigned to oblivion despite its clinical, prognostic, criminogenic value. At the core of this diagnosis lies specifics interactions between psychosis and psychopathy. The diagnosis was first coined by Kalhbaum in 1890, was revived by Anglo-Saxon literature in the first half of the 20th century, and by French psychiatrists in the late 90’. Method We integrated literary sources, clinical experience and an own pilot study as a stepping-stone for a more in-depth research. Cases (n=20) were selected out of samples of Mentally Disordered Offenders in Belgian Medium and High Risk Forensic Facilities. Files, records and therapist’s experiences were quantitatively analysed iteratively to cull subtypes from each other. We here present preliminary qualitative results, more indepth qualitative and quantitative results will be produced. Results The diagnosis subsumes more than a mere DSM-IV-TR Axis I & II comorbidity, it can be seen from a developmental perspective, or from a structural perspective. Both vantage points suggest an interplay between the (paranoid) psychotic process and the antisocial behaviour, where both trigger and induce each other. At this point, we found evidence for three subtypes modes of interplay; 1) mood instability patterns induced either psychopathic or psychotic phenotypic presentation, 2) according to personality organization and its defensive functioning (were psychopathy defends against psychosis), and 3) phenotypic expression of both components (psychopathy and psychosis) linearly co-dependent. Discussion Despite its incremental value, little is known about the therapeutic prospects of this diagnosis. Current results indicate that these patients do question competency to answer for their deeds in a peculiar manner, relapse more often, reoffend more often, do evade treatment opportunities (if they have any), act out more often (in both antisocial and psychotic ways), induce a particular negative counter-transference in psychiatric teams, etc. Because of these particularities and their versatile phenotype presentation, heboidophrenia patients cannot simply be assimilated to the “high risk & high care” population, but need special supervision and clinical insight. In this research, we aim(ed) at discerning semiologic signs in order to support the diagnostic process. [less ▲]

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See detailReprésentation d'intégrales stochastiques via la base de Haar
Esser, Céline ULg

Conference (2016, May 24)

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See detailIncarceration and parenting : is parenting a desistance factor?
Puglia, Rosa ULg; Servaes, Anne; Halin, Stéphanie ULg et al

Poster (2016, May 24)

Incarceration leads to a break between an individual and one’s social environment, inducing significant losses of identity (Touraut, 2014). Tough delinquent identity remains prominent, during their ... [more ▼]

Incarceration leads to a break between an individual and one’s social environment, inducing significant losses of identity (Touraut, 2014). Tough delinquent identity remains prominent, during their incarceration, some inmates invest their role of father. Investing his role of father and thus his father’s identity allows the inmate to break away with delinquent’s identity (Tripp, 2009; Walker, 2009). Moreover, research on desistance underlines that turning point like job, marriage or parenthood supports the transition from criminal life to conventional life (Laub et Sampson, 2003; Lebel, Burnett, Maruna & Bushway, 2008). Indeed, becoming parent is a stage in life cycle that can shape one’s lifestyle. From qualitative researches conducted with father inmates since at least 6 months, we have identified the link between investment in parenting and desistance. The hypothesis is that investment in parenting has a positive impact on father’s prison experience, parenting sense of competence and it will support desistance process. A semi-structured interview and several questionnaires assessing relational and social life have been used in this context (WHOQOLbrief, EPS, ESUL, educational attitudes, QAECEP). First results highlight that parenting during incarceration can be difficult. Some inmates try to keep it with visits between inmate fathers and their children. These visits are influenced by different factors and have a positive impact on prison experience. Indeed, with these visits, inmates maintain a link with their children. That is a source of support and hope during incarceration. That allows investment in one father’s identity. [less ▲]

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See detailCatalytic transformation of CO2: from monomers to polymers
Alves, Margot ULg; Grignard, Bruno ULg; Boyaval, Amélie ULg et al

Conference (2016, May 24)

Valorising CO2 as a renewable C1 feedstock for producing added value building blocks is the scope of many academic and industrial researches. Carbon dioxide is a thermodynamically and kinetically stable ... [more ▼]

Valorising CO2 as a renewable C1 feedstock for producing added value building blocks is the scope of many academic and industrial researches. Carbon dioxide is a thermodynamically and kinetically stable molecule that can be converted into five membered cyclic carbonates by coupling with epoxides using organometallic complexes or organocatalysts. To date, the identification and development of highly efficient (organo)catalysts under mild experimental conditions still remains challenging. In particular, the synthesis of six membered cyclic carbonates by the CO2/oxetane coupling using such organocatalysts has never been reported to our knowledge. In this context, we developed a new highly efficient bicomponent homogeneous organocatalyst composed of an ammonium salt as the catalyst and fluorinated single or double hydrogen bond donor activators (HBD). First, the efficiency of this new organocatalyst for the fast and selective CO2/epoxide coupling was investigated through detailed kinetic studies by IR spectroscopy under pressure and results were compared with the most efficient organocatalysts reported in the literature. This study was completed by molecular modeling in order to elucidate the reaction mechanism. DFT calculations showed that the hexafluoroisopropanol functionalities of HBDs strengthened the proton donor capability and allowed a better stabilization by hydrogen bonding of the intermediates and transition states. Finally, the use of this dual organocatalyst was extended to the coupling of CO2 with less reactive oxetanes to produce hydroxyl telechelic oligocarbonates. [less ▲]

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