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See detailThe territories of deliverance: sociotemporal reconfigurations of the Congolese revival
Demart, Sarah ULg

Conference (2014)

From research led for years within pentecostal Congolese circles (France, Belgium, Canada, Kinshasa) this paper explores the religious transformations of diasporic churches. The migratory reorientation ... [more ▼]

From research led for years within pentecostal Congolese circles (France, Belgium, Canada, Kinshasa) this paper explores the religious transformations of diasporic churches. The migratory reorientation, from RDC to Europe and from Europe to Canada, shows a reformulation of “deliverance”, leitmotiv of churches discourses, that informs the historical depth of the religious formation. Considering the continuity of this theology of Salvation with the prophecies of precolonial and colonial periods and the globalization in which Congolese revival is inserted, I look at how spatial mobility influence the colonial memory of theses diasporic groups. [less ▲]

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See detailImplementing agricultural land-use in the CARAIB dynamic vegetation model
François, Louis ULg; Jacquemin, Ingrid ULg; Fontaine, Corentin et al

Conference (2014)

CARAIB (Dury et al., iForest - Biogeosciences and Forestry, 4:82-99, 2011) is a state-of-the-art dynamic vegetation model with various modules dealing with (i) soil hydrology, (ii) photosynthesis/stomatal ... [more ▼]

CARAIB (Dury et al., iForest - Biogeosciences and Forestry, 4:82-99, 2011) is a state-of-the-art dynamic vegetation model with various modules dealing with (i) soil hydrology, (ii) photosynthesis/stomatal regulation, (iii) carbon allocation and biomass growth, (iv) litter/soil carbon dynamics, (v) vegetation cover dynamics, (vi) seed dispersal, and (vii) vegetation fires. Climate and atmospheric CO2 are the primary inputs. The model calculates all major water and CO2/carbon fluxes and pools. It can be run with plant functional types or species (up to 100 different species) at various spatial scales, from the municipality to country or continental levels. Within the VOTES project (Fontaine et al., Journal of Land Use Science, 2013, DOI:10.1080/1747423X.2013.786150), the model has been improved to include crops and meadows, and some modules have been written to translate model outputs into quantitative indicators of ecosystem services (e.g., evaluate crop yield from net primary productivity or calculate soil erosion from runoff, slope, grown species and various soil attributes). The model was run over an area covering four municipalities in central Belgium, where land-use is dominated by crops, meadows, housing and some forests and was introduced in the model at the land parcel level. Simulations were also performed for the future. In these simulations, CARAIB was combined with the Aporia Agent-Based Model, to project land-use changes up to 2050. This approach is currently extended within the MASC project (funded by Belgian Science Policy, BELSPO) to the whole Belgian territory (at 1 km2) and to Western Europe (at 20 km x 20 km). [less ▲]

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See detailPt/C catalyst for PEM fuel cells: low pressure and low temperature plasma synthesis of Pt nanoparticles
Devant, Ludovic; Laurent-Brocq, Mathilde; Job, Nathalie ULg et al

Conference (2014)

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See detailLes multiplexes en allergie
GADISSEUR, Romy ULg

Conference (2014)

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See detailDESIGN, MODELING AND EXPERIMANTATION OF A REVERSIBLE HP-ORC PROTOTYPE
Dumont, Olivier ULg; Quoilin, Sylvain ULg; Lemort, Vincent ULg

Conference (2014)

This paper presents an innovative system comprising a heat pump connected to a solar roof and a geothermal heat exchanger. This heat pump is also able to invert its cycle and operate as an ORC. By using ... [more ▼]

This paper presents an innovative system comprising a heat pump connected to a solar roof and a geothermal heat exchanger. This heat pump is also able to invert its cycle and operate as an ORC. By using the whole rooftop (hereunder called “absorber”) as a heat source, a large amount of heat is generated throughout the year. This heat is used in priority to cover the building annual heating needs and the surplus heat generated during the summer is utilized to generate electricity in a so-called HP/ORC module. This paper will thus focus on these two main points: designing of the prototype and results from experimentation. This paper demonstrates the feasibility of such a prototype with encouraging performance in ORC and HP modes. Experimentally, a COP of 4.2 is reached in heat pump mode and a global efficiency of 5.6 is obtained in ORC mode. Possible means of improvement and perspectives are finally described. [less ▲]

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See detailLa contribution des lobes frontaux au fonctionnement exécutif
Collette, Fabienne ULg

Conference (2014)

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See detailEffet de la lumière sur les fonctions cognitives non-visuelles
Vandewalle, Gilles ULg

Conference (2014)

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See detailA constructive heuristic for the three dimensional Bin Packing Problem with transportation constraints
Paquay, Célia ULg; Schyns, Michael ULg; Limbourg, Sabine ULg

Conference (2014)

The aim of this work is to propose a Relax-And-Fix heuristic to build a good initial solution to the 3D BPP. First, a mathematical formulation has been developed taking into account several types of ... [more ▼]

The aim of this work is to propose a Relax-And-Fix heuristic to build a good initial solution to the 3D BPP. First, a mathematical formulation has been developed taking into account several types of constraints such as the stability and fragility of the boxes to pack, their possibility to rotate, the weight distribution inside the bins and their special shapes. Since this model contains a lot of integer variables, we have decided to apply the Relax-and-Fix method. We have selected several sets of variables to be the branching variables and carried out some tests. [less ▲]

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See detailThe Belgian Congolese Relation. Reading the postcolonial malus
Demart, Sarah ULg

Conference (2014)

The integration of immigrants and their offspring is one of the major challenges facing Belgian society. Like other societies in the northern hemisphere, Belgian society is now characterised by ‘super ... [more ▼]

The integration of immigrants and their offspring is one of the major challenges facing Belgian society. Like other societies in the northern hemisphere, Belgian society is now characterised by ‘super-diversity’ (Vertovec 2007). In comparison with other OECD countries, Belgium seems to face particular difficulties with regards to the integration of its immigrants and their offspring in the fields of access to employment, private housing and education. Stemed from discriminatory practices (Economic and Social Council 2006) these problems constitute however the blind spot of the academy. In this paper, I would like to consider the “postcolonial bonus” hypothesis (Oostindie, 2011) with regards to the Congolese community in Belgium. Belgian’s colonial migration history presents differences with regards to the British, French or Dutch configurations. Nowadays, three generations of Congolese Belgians make up a community that shows a paradoxical socioeconomic integration pattern, combining on average the highest level of education with the highest level of unemployment in Belgian society (Schoonvaere, X). Despite an intense involvment of Congolese Belgians in the academic, associative, political or artistic spheres, several variables point towards a particular post-colonial racialization process. The absence of a public debate on the colonial history of Belgium suggests a link between the marginalization of this group and the colonial legacy of the society that will be developped from a comprehensive sociology and ten years of immersion within the Congolese circles. [less ▲]

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See detailEpigenetic effects of omega-3 FA on the immune response of broiler breeder offspring
Koppenol, A.; Everaert, Nadia ULg; Franssens, L. et al

Conference (2014)

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See detailShould I Access or Should I Own? Perceived Risks as Barriers to Access-Based Consumption
Hazee, Simon ULg; Delcourt, Cécile ULg; Van Vaerenbergh, Yves

Conference (2014)

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See detailWakefulness regulation: from light to cortical excitability
Vandewalle, Gilles ULg

Conference (2014)

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See detailCortical excitability depends on time awake and circadian phase
Ly, Julien; Gaggioni, Giulia; Chellappa, Sarah Laxhmi ULg et al

Conference (2014)

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See detailInnover dans le contexte de l’enseignement supérieur : une rencontre entre recherche et pratique enseignante
Poumay, Marianne ULg

Conference (2014)

Après avoir rappelé quelques-uns des défis qui se posent aujourd’hui à l’enseignement supérieur –et plus particulièrement à ses enseignants –et défini ce qui est entendu par «innovation pédagogique » ... [more ▼]

Après avoir rappelé quelques-uns des défis qui se posent aujourd’hui à l’enseignement supérieur –et plus particulièrement à ses enseignants –et défini ce qui est entendu par «innovation pédagogique », cette communication explore six portes d’entrée dans le changement. Elle épingle ensuite, en les illustrant, quelques grandes tendances innovantes en lien avec les technologies Internet et les lie systématiquement tant à la recherche qu’à l’enseignement. Les liens avec la recherche sont explorés pour chaque type d'innovation. [less ▲]

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See detailOrigin and evolution of the early land plants in Argentina and South America through the palynological record
Rubinstein, C.V.; Garcia Muro, V.J.; Steemans, Philippe ULg

Conference (2014)

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See detailConsumer acceptance of insect-based meat substitutes
Caparros Megido, Rudy ULg; Gierts, Chloé; Blecker, Christophe ULg et al

Conference (2014)

Meat plays an important role in the consumption pattern of most European and North American consumers. Meat production is responsible for a well known environmental pressure due to the inefficient ... [more ▼]

Meat plays an important role in the consumption pattern of most European and North American consumers. Meat production is responsible for a well known environmental pressure due to the inefficient conversion of plant protein to meat protein and alternatives sources, such as insects or algae, will be rapidly required. In a recent theorical study, de Boer et al. (2013) show that consumers prefer to eat a hybrid meat product (i.e. a mix of meat and its substitute) rather than a pure meat substitute [3]. Based on these preliminary results, hedonic tests were realized to assess the acceptability of insect-based burgers in a target population composed of people from 15 to 25 years old, considered as the future insect consumers. Isolated in a tasting booth, each participant was invited to taste four burger samples containing a ratio of 20 gr of protein by 100 gr of burger. The first burger was prepared with 95% of grounded beef (1), the second with 95% of green lentil (2), the third with 45% of green lentil and 50% of mealworms (Tenebrio molitor L.; Coleoptera, Tenebrionidae) and the fourth with 45% of grounded beef burger and 50% of mealworms. The last 5% of each burger consists of an aromatization portion containing onions, carrots, tomato paste and garlic. Participants were asked to rate each sample on a 9-point hedonic scale, where extreme sides were noted from “extremely dislike” (left) to “extremely like” (right). Tukey post-hoc comparisons on the appreciation results showed that beef-based products (with or without mealworms) were relatively preferred to lentil-based products (with or without mealworms), probably because hybrid meat burgers seem more familiar to the consumers than vegetable burgers, and that no liking differences were noticed between the two beef-based burgers and between the two insect-based burgers. These results confirm that shape and appearance are key criteria in the acceptation of meat substitute by non-vegetarian consumers and that insects will preferentially be consumed, in the future, if they are presented in an invisible way and associated with familiar flavors. [less ▲]

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See detailLe devoir de confidentialité des institutions d'arbitrage
Kohl, Benoît ULg

Conference (2014)

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See detailFirst palynological record of the Silurian/Devonian boundary in the San Juan Precordillera, Argentina
Garcia Muro, V.J.; Rubinstein, C.V.; Steemans, Philippe ULg

Conference (2014)

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See detailThe arbitrability of disputes
Kohl, Benoît ULg

Conference (2014)

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See detailLe goût amer du chocolat européen
Lebailly, Philippe ULg

Conference (2014)

La Directive 73/241 du 24 juillet 1973 avait été adoptée dans le cadre du droit communautaire alimentaire afin d'établir des règles communes pour la composition, les caractéristiques de fabrication,le ... [more ▼]

La Directive 73/241 du 24 juillet 1973 avait été adoptée dans le cadre du droit communautaire alimentaire afin d'établir des règles communes pour la composition, les caractéristiques de fabrication,le conditionnement et l'étiquetage des produits de cacao et de chocolat. Lors des discussions de la Directive, la possibilité d'une adjonction de matières grasses végétales (MGV) autres que celles contenues naturellement dans le cacao n'avait pas pu faire l'objet d'une entente entre les neuf états qui composaient alors la Communauté européenne. Avec l'arrivée de nouveaux Etats, le rapport de force s'est modifié et les négociations pour une révision de la Directive de 1973 ont été relancées en 1996. L'argument principal pour une harmonisation des législations faisait référence à la libre circulation des marchandises avec le Marché unique en faisant valoir que le maintien de normes différentes créait des obstacles aux échanges, cloisonnant le marché du chocolat dans l'Union Européenne. La question qui restait posée était d'autoriser ou pas les matières grasses végétales (MGV). Les plaidoyers en faveur du respect de la tradition et de la qualité et les intérêts des producteurs de cacao n'ont pas réussi à convaincre et la nouvelle réglementation communautaire du chocolat fait à l'évidence le bonheur des multinationales du secteur pour lesquelles son adoption a été une victoire : depuis le 23 juin 2000, la Directive 2000 / 36 abroge la directive de 1973 et permet d'utiliser d'autres MGV, moins chères que le beurre de cacao pour la fabrication du chocolat, dans la limite de 5 % du poids total du produit fini. En théorie, sont considérés comme MGV: l'illipé, l'huile de palme, le sal, le beurre de karité, le kogum gurgi et les noyaux de mangue. Dans les faits, c'est l'huile de palme qui est le produit de substitution. Dix ans après avoir autorisé l'incorporation d'huile de palme dans le chocolat, le consommateur européen découvre les méfaits de celle-ci sur la santé et l'environnement ! Un bien triste constat et ce d'autant que l'adoption de la Directive a privé les planteurs africains (l'offre de fèves de cacao est pour 70% d'origine africaine) d'un revenu bien nécessaire pour lutter contre la pauvreté en zone rurale. [less ▲]

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See detailExperimental investigation of an ORC system for a micro-solar power plant
Dickes, Rémi ULg; Dumont, Olivier ULg; Declaye, Sébastien ULg et al

Conference (2014)

Because of the depletion of fossil fuels and global warming issues, the world energy sector is undergoing various changes towards increased sustainability. Among the different technologies being developed ... [more ▼]

Because of the depletion of fossil fuels and global warming issues, the world energy sector is undergoing various changes towards increased sustainability. Among the different technologies being developed, solar energy, and more specifically CSP (Concentrated Solar Power) systems are expected to play a key role to supply centralized loads and off-grid areas in the medium-term. Major performance improvements can be achieved by implementing advanced control strategies accounting for the transient and random nature of the solar heat source. In this context, a lab-scale solar power plant has been designed and is under construction for experimental purposes and dynamic analysis. The test rig includes an Organic Rankine Cycle (ORC) unit, a field of parabolic trough collectors and a thermal energy storage system. This paper presents the results of an experimental campaign conducted on the ORC module alone. This power unit, designed for a 2.8 kW net electrical output, consists of two scroll expanders in series, an air-cooled condenser, a recuperator, a volumetric pump and an oil-heated evaporator. The ORC engine is constructed using standard mass manufactured components from the HVAC industry, this practice reducing considerably the system cost. The overall unit performance and components effectiveness are presented in different operating conditions and relevant empirical correlations are derived to be implemented in a steady state model of the ORC unit. [less ▲]

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See detailFrench Pragmatic Sociology: A Materialist Renewal of Critical Theory
Frère, Bruno ULg

Conference (2014)

From Lukács to Bourdieu, many significant intellectual developments have taken place and, in fact, one may gain the impression that the critical tradition continues to be based on one key assumption ... [more ▼]

From Lukács to Bourdieu, many significant intellectual developments have taken place and, in fact, one may gain the impression that the critical tradition continues to be based on one key assumption: individuals (workers, social actors, etc.) unconsciously reproduce the social structures of capitalism whilst being alienated by them. They accept the conditions enforced on them and no longer seek to rebel against a system which impoverishes not only their work and culture, but also their [soul]problematic? and creativity. The situation may be even more diree: they ensure the reproduction of the system by seeking to engage in mass consumption at any cost, or by glorifying the dominant values. In this chapter I would like to show that toay, no critical perspective has emerged out of a negative representation of the world such is likely to introduce ‘man’ living here and now as something other than a deeply bastardized being, corrupted, denatured, perverted, inflected, soiled by a civilizing process which owes its perversion to modernity (Rousseau) on the one hand, and to capitalism on the other. As we shall see, without making an exception, Honneth has rightly noted that all the authors of the tradition of what he calls ‘social philosophy’ have remained dependent on a form of disgust regarding the world as it is. Yet for me as a sociologist of social movements, it seems difficult to deal with such a [software]? of the new forms of social resistance to domination (Indignados, anonymous, alternative economy, movements of the ‘-less’ – see Frère and Jacquemain, 2013), even though it is precisely the same kind of diagnosis adopted by a significant number of theories dealing with cooperation and association. Some amongst them leave me sceptical, notably when it comes to the shared desire to [locate,]posit? for instance, an alternative and [solidary]? economy in the field of utopia, as opposed to a succinct and time-honoured representation of Marxism (Pessin, 2001; Pradès, 2012; Hély and Moulévrier, 2013), or to subscribe to the 'natural' reciprocity of human beings as they lived before the arrival of capitalist modernity, , thus before the ideology of growth perverted human imagination (Godbout, 2000). is this right? In my opinion, in order to be able to talk about contemporary reactions of resistance against diverse forms of alienation and domination authorized by contemporary [connectionist]? capitalism, a philosophical representation of the passive, unconscious human reified by this very same domination, which only a few holy utopian thinkers would avoid, remains ineffective. This is because, in the case of such a representation, the modern subject will be likely to react when criticism will have taken away that layer of impurity specific to the condition of alienated man in order to allow him to renew his deep nature, the one which was his in the context of the ‘good life’ , as Habermas and Honneth would say . Yet abolishing the very possibility of transcendentalism and idealism which lies implicit in contemporary critical theories, whether French or German, opens the door to the possibility, in the incertitude of the social model that they may create, of an actual – but profane – criticism of capitalisme. Here, it is a matter of human relationships in the world that gives criticism its content, in all their insurmountable impurity, in all their contingency. Aiming at abolishing the transcendental anthropological foundations that criticism has always allowed itself, this gesture is currently silhouetted not in philosophy but, rather, in a sociology, that is, ‘pragmatic sociology’. Parallel to the classical Marxist tradition traversing Bourdieu’s critical sociology and the intellectual tradition of the Frankfurt School, it is a form of ‘critical materialism’ that I would like to exhume in this chapter, a notion inspired by the libertarian Marxism of Lefort and Castoriadis (see Frère, 2009), which is able to make the profane capacities of people’s emancipation emerge . I would like to do so on the basis of a reflection revolving around the pragmatic perspective which has recently been reinforced in France by Boltanski in his book De la critique (2009), but which stands – in my view – as the backdrop of all his works. [less ▲]

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See detailEffect of viscosity on the robustness of the element deletion method for crack propagation modelling
Canales Cardenas, Cristian ULg; Ponthot, Jean-Philippe ULg

Conference (2014)

The numerical simulation of crack propagation in solids is of main importance in fracture mechanics and has been extensively studied over the years. Several approaches have been developed in order to ... [more ▼]

The numerical simulation of crack propagation in solids is of main importance in fracture mechanics and has been extensively studied over the years. Several approaches have been developed in order to describe the evolving geometry of a crack [1{6], but despite the research e orts some challenges are still present. A commonly used technique in Finite Element codes is the element deletion method due to the simplicity of its numerical implementation and possible extension to 3D. Furthermore, it is possible to couple this method with any failure criterion or damage model without additional considerations. This advantages are extremely desirable for numerical approaches involving high computational costs, e.g. the multi-scale computational homogenization [7, 8], where the element deletion method can be used at the micro-scale to simulate the nucleation, growth and coalescence of micro-voids [9]. [less ▲]

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See detailOn the numerical simulation of sheet metal blanking process
Canales Cardenas, Cristian ULg; Bussetta, Philippe ULg; Habraken, Anne ULg et al

Conference (2014)

One of the most widely used cutting techniques in sheet metal forming processes for mass production is the blanking process. In this process, a metallic sheet is placed between a die and a blankholder ... [more ▼]

One of the most widely used cutting techniques in sheet metal forming processes for mass production is the blanking process. In this process, a metallic sheet is placed between a die and a blankholder, and is then cut by the action of a punch which moves downward. The quality of the final product is directly linked to the resulting shape of the cut edge. Due to the complexity of the separation step, the set-up of the blanking process in practice is often driven by empirical knowledge. Thus, an accurate numerical tool is extremely desirable to optimize the setting parameters of this technique and will lead to a better understanding of the entire process. The numerical approach must be able to deal with three main issues involved in blanking: large and localized deformation, friction and contact, and ductile fracture. Furthermore, due to requirements of mass production the punch velocity is normally high and the effects of the strain rate must also be considered. Several approaches have been developed in order to model this cutting process but its accuracy still presents some numerical challenges. [less ▲]

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See detailLa Brigade d'intervention de la MONUSCO et le peacebuilding
Baenda Fimbo, Zacharie ULg

Conference (2014)

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See detailDéfinir rigoureusement des trajectoires de développement pour chacune des compétences à la base de la formation
Tardif, Jacques; Poumay, Marianne ULg; Georges, François ULg

Conference (2014)

But de l'atelier: Présenter une démarche de conception et d’élaboration de trajectoires de développement de compétences inscrite dans une logique de professionnalisation graduelle de l’étudiant.

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See detailRestoring order: Inheritance disputes and shifting legal consciousness in Cotonou
Andreetta, Sophie ULg

Conference (2014)

For the purpose of this paper, I will focus on the litigants’ discourses on the law and the State in inheritance cases in Cotonou. As a matter of fact, over the last few years, the number of inheritance ... [more ▼]

For the purpose of this paper, I will focus on the litigants’ discourses on the law and the State in inheritance cases in Cotonou. As a matter of fact, over the last few years, the number of inheritance disputes handled by the Beninese state courts has drastically increased. In Cotonou, State of Persons courtrooms (Chambres Etat des Personnes) – competent with regards to family matters – are so crowded that people even have to queue outside during registration. Litigants often mention that they “referred to the state” in order to “restore order” within their families. The question is: does the legal system actually manage to meet their expectations? In order to answer that question, I will focus on the legal consciousness of Beninese families and how this shifts throughout the litigation process. How do people understand and utilize state law in inheritance cases? Why do they go to court, and what do they expect from the judiciary? How does their understanding and perception of law adjust as they experience state courts? Finally, how do the aftermath of legal proceedings and the implementation process amend their legal consciousness? Within that framework, Beninese plaintiffs often go from trusting that the state would “restore order” into their family to believing that the judiciary somehow made things even worse. While scholars have investigated how race , gender, or social status influence “the ways people understand and use the law” (Merry, 1990:5), there is however little reflection on the way legal consciousness develops throughout the litigation process. There is also a point to be made about the relationship between the law and the state. In Benin, people “refer to the State” when bringing a case to court and, through the judge, “the State” is the one solving their problems. Within that context, the way people think about and experience legal proceedings in Cotonou is as much about legal consciousness as it is about state consciousness. It is about the legitimacy and efficacy of the state in delivering public service; about governance and power. [less ▲]

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See detailTransgenerational and long-term effects induced by reduced protein availability by albumen removal during embryonic development in laying hens
Willems, E.; Koppenol, A.; Franssens, L. et al

Conference (2014)

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See detailDIMENSIONNEMENT ET EXPÉRIMENTATION D’UNE UNITÉ POMPE À CHALEUR / ORC RÉVERSIBLE
Dumont, Olivier ULg; Quoilin, Sylvain ULg; Lemort, Vincent ULg

Conference (2014)

L’union européenne doit réduire les émissions de gaz à effet de serre de 80% par rapport au niveau des années 90 d’ici 2020. Les ménages représentent 27% de la consommation finale. Dans ce cadre, les ... [more ▼]

L’union européenne doit réduire les émissions de gaz à effet de serre de 80% par rapport au niveau des années 90 d’ici 2020. Les ménages représentent 27% de la consommation finale. Dans ce cadre, les bâtiments dont la consommation d’énergie est quasi nulle (NZEB – Nearly Zero Energy Building) sont d’une importance considérable. A partir de 2019, tous les nouveaux bâtiments devront présenter une production d’énergie renouvelable supérieure à la consommation d’énergie primaire. C’est dans ce cadre que le concept de PAC/ORC prend tout son sens. Ce système innovant comprend une pompe à chaleur eau/eau (PAC) reliée à un toit solaire et à un échangeur de chaleur géothermique. Cette pompe à chaleur est également capable d'inverser son cycle et de fonctionner comme un Cycle Organique de Rankine (ORC). En utilisant le toit solaire comme source de chaleur, une grande quantité de chaleur est générée tout au long de l'année. Cette chaleur est utilisée en priorité pour couvrir les besoins de chauffage annuels et le surplus de chaleur généré au cours de l'été est utilisée pour produire de l'électricité dans l’unité PAC / ORC. L’article s’articule en 4 parties. Tout d’abord, l’introduction présente les trois modes de fonctionnement. Ensuite, les modèles des composants et l’évaluation des performances au point nominal de conception sont décrits. Par après, le dimensionnement et le choix des composants sont réalisés sur bases de simulations annuelles avec un pas de temps d’une heure. Enfin, les premiers résultats expérimentaux sont présentés. Un rendement de 5,7% est atteint en mode ORC (avec une température de condensation de 25°C et une température d’évaporation de 88°C) alors qu’un COP de 4,2 est obtenu en mode pompe à chaleur (avec une température de condensation de 61°C et une température d’évaporation de 21°C). [less ▲]

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See detailComment appréhender la complexité inhérente aux compétences ?
Georges, François ULg; Tardif, Jacques; Poumay, Marianne ULg

Conference (2014)

La compétence est complexe. À l’instar d’un cube qui ne donne accès simultanément qu’à trois de ses faces, la compétence ne laisse transparaître que certaines combinaisons de ressources. Afin d’examiner ... [more ▼]

La compétence est complexe. À l’instar d’un cube qui ne donne accès simultanément qu’à trois de ses faces, la compétence ne laisse transparaître que certaines combinaisons de ressources. Afin d’examiner les autres ressources combinées, il convient de changer de point de vue. Dans cette présentation, nous proposons une typologie des portes d’entrée utilisées par les apprenants pour rendre compte de leurs compétences. De cette analyse, nous suggérons des angles de vue qui guident l’apprenant dans le choix de portes d’entrée complémentaires de sorte que les points de vue variés assurent la prise en compte de la compétence dans toute sa complexité. Sur base de cette démarche exploratoire, nous proposons des pistes pour porter un jugement valide sur le développement des compétences. [less ▲]

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See detailValidation of a SPH model for free surface flows
Goffin, Louis ULg; Erpicum, Sébastien ULg; Dewals, Benjamin ULg et al

Conference (2014)

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See detailStudy of the potentiality of insect breeding system for human food in Cambodia (Ratanakiri province)
Caparros Megido, Rudy ULg; Alabi, Taofic ULg; Nieus, Clément et al

Conference (2014)

The main purpose of this work was to optimize a cheap cricket breeding production for local farmers based on unused wild resources. Cricket development (Teleogryllus testaceus (Walker)) was compared ... [more ▼]

The main purpose of this work was to optimize a cheap cricket breeding production for local farmers based on unused wild resources. Cricket development (Teleogryllus testaceus (Walker)) was compared according to seven diets composed of different ratio of aerial parts of taro, young cassava leaves, young cashew leaves, brown rice flour (with or without banana slices) and between the traditionally used chicken feed diet. Cricket mortality was low on all diets (<10 %) excepted on the two cashew-based diets (>90 %). Mean adult body mass was significantly higher on chicken feed diet and on the two cassava-based diet than on the other. Moreover, protein percentage in cassava-feed crickets was similar with this of wild crickets. As each villager grows cassava for their tubers without using the leaves, this free available resource could be used to rear crickets in order to contribute to the reduction of protein deficiency and create new source of incomes for local farmers. [less ▲]

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See detailThe determinations of household agricultural land use strategies in Red River Delta, Vietnam
Nguyen Thi, Dien; Vu Dinh, Ton; Lebailly, Philippe ULg et al

Conference (2014)

This research presents the determinations of household land use strategy in the context of the rapid rural changes due to the industrialization and urbanization in Vietnam. The mechanism that turns land ... [more ▼]

This research presents the determinations of household land use strategy in the context of the rapid rural changes due to the industrialization and urbanization in Vietnam. The mechanism that turns land to livelihood from both productive and non-productive processes is investigated to understand the different land use strategies of smallholders in Red River Delta region. Based on the presence of migrating members, the total selected 191 households in Hai Duong province were divided into 3 different groups to do the surveys. The research results show that local land use strategies are various in which 79.06% of surveyed households maintain the allocated land for agricultural production while 65.97% of households leave land idly at least once a year. The factors from productive process such as small landholding, high production cost and overall downward income from agricultural production meantime the greater opportunities from non-farm jobs are the main socio-economical determinations of agricultural land abandonment or less effective use. The security questions of shifting livelihood between farming and non – farming sectors, the inter-household arrangements, the social supports and the institutional constraints are non-productive elements that make the exchange and other forms of commercializing agricultural land are less prominent. The complexity of household land use strategy and its determinations not only reflects the dynamism and flexibility of peasant’s livelihood adaptation but also explain why the land concentration does not proceed faster in Red River Delta region of Vietnam. [less ▲]

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See detailMeteorological variation in travel behaviour
Creemers, Lieve; Wets, Geert; Cools, Mario ULg

Conference (2014)

Weather causes a variety of impacts on the transportation system. This paper contributes to the weather-related transport literature by investigating the meteorological variation in revealed preference ... [more ▼]

Weather causes a variety of impacts on the transportation system. This paper contributes to the weather-related transport literature by investigating the meteorological variation in revealed preference travel data. The main objective of this paper is to investigate the impact of weather conditions on revealed activity participation (trip motives) and revealed modal choices in the Netherlands. To this end, data from the Dutch national travel household survey 2008 was matched to hourly weather data provided by the Royal Dutch Meteorological Institute. Two GEE-MNL models are constructed, namely one for modelling the impact of weather conditions on trip motive and one to assess the effect on modal choice. The parameter estimates of the weather variables indicate that, depending on which travel attribute one focuses, other factors might play a role. Nonetheless, fog, sunshine duration and temperature have a significant impact in both models. Unexpected is the fact that snow and ice cover do not play a role at all. Nonetheless, this finding can be accounted for by the relative low occurrence of these weather types in the study area. It is important to integrate these identified impacts of weather in travel demand modelling frameworks, since this will help to achieve a higher accuracy and more realistic traffic forecasts. This allows policy makers to make better long-term and short-term decisions to achieve various political goals, such as the development towards a sustainable transportation system. Further research in this regard, should emphasize on the role of weather conditions and activity-scheduling attributes. [less ▲]

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See detailANALYSE DES DETERMINANTS DE L'ACCES AU CREDIT DES EXPLOITATIONS AGRICOLES AU BENIN
Sossou, Comlan ULg; Dogot, Thomas ULg; Lebailly, Philippe ULg et al

Conference (2014)

Cet article analyse les facteurs structurels, comportementaux et de performance qui déterminent l’accès au crédit des exploitations agricoles au Bénin. Les données ont été collectées auprès de 475 ... [more ▼]

Cet article analyse les facteurs structurels, comportementaux et de performance qui déterminent l’accès au crédit des exploitations agricoles au Bénin. Les données ont été collectées auprès de 475 exploitations agricoles. Un modèle logit binomial a été utilisé au cours de l’analyse. Les résultats ont montré que la taille des ménages, la proximité des IMF, l’appartenance à un groupement de solidarité financière et le revenu issu de la principale culture sont les facteurs qui influencent l’accès au crédit. L’analyse des effets marginaux a indiqué que l’amélioration de la proximité des IMF et l’appartenance à un groupement de solidarité financière sont susceptibles d’augmenter significativement l’accès au crédit. Ainsi, nous recommandons l’amélioration du taux de couverture des IMF présentes au Bénin et la sensibilisation des exploitants agricoles à la formation et/ou l’adhésion à des groupements de solidarité financière. [less ▲]

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See detailLe règlement des litiges immobiliers sous les auspices du CEPANI
Kohl, Benoît ULg

Conference (2014)

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See detailCortical excitability dynamics of during sleep deprivation set PVT performance
Borsu, Chloé; Gaggioni, Giulia ULg; Ly, Julien et al

Conference (2014)

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See detailEvaluating functional data for the European Middle Palaeolithic
Rots, Veerle ULg

Conference (2014)

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See detail"Synthèse des travaux"
Delruelle, Edouard ULg

Conference (2014)

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See detailNew Insights into Iron-Based Photosynthesis
Thompson, K; Lliros, M; Borrego, C et al

Conference (2014)

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See detailNPM Under Pressure: An Inquiry in Theory
Esposito, Giovanni ULg

Conference (2014)

This theoretical inquiry is undertaken on the basis of the problematization methodology proposed by Alvesson et Sandberg (2011) and deriving from a critical approach to management studies. In this paper ... [more ▼]

This theoretical inquiry is undertaken on the basis of the problematization methodology proposed by Alvesson et Sandberg (2011) and deriving from a critical approach to management studies. In this paper, problematization is adopted not only to question the fundamental assumptions of New Public Management (NPM) theory, but also to develop alternative assumptions to be explored in order to highlight a new way of approaching the managerial practices of public organizations. Starting from the in-house level of assumptions, NPM theoretical body has been gradually deconstructed by progressively increasing the level of abstraction and reaching the field level of assumption. The assumption’s content at each level of abstraction has been determined thanks to a continuum comparison between NPM and the Public Value Theory (PVT) school of thought. Because of its status of challenging theory, PVT has played the role of a theoretical reagent added to NPM system of thought in order to bring about a theoretical reaction enabling to spotlight problematic assumptions and generate further research questions. Such a “theoretical reaction” has shown that NPM is a functionalist theory based on a rationalistic approach to public organizations which are conceived as machines whose proper functioning depends on efficiency improvements to be achieved by means of a planning mode of management. [less ▲]

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See detailPerformance et expérience esthétique : le régime contemporain (Rancière)
Hagelstein, Maud ULg

Conference (2014)

Le cadre de ce colloque repose sur le constat de la perte d’intensité de l’ancien système des Beaux-Arts ou en tout cas sur l’idée de sa réévaluation contemporaine – opérée à partir d’une attention accrue ... [more ▼]

Le cadre de ce colloque repose sur le constat de la perte d’intensité de l’ancien système des Beaux-Arts ou en tout cas sur l’idée de sa réévaluation contemporaine – opérée à partir d’une attention accrue à l’hétérogénéité des pratiques artistiques. Pourquoi mobiliser ici la figure de Rancière ? Pour la raison suivante : c’est l’un des philosophes actuels qui s’est encore donné la peine d’essayer de théoriser de manière inédite (et non moderniste ) la fin du régime traditionnel des Beaux-Arts (2ème régime). Les trois grands régimes de l’art sont chez Rancière des régimes de perception, d’identification et d’interprétation de l’art – c’est-à-dire des ensembles déterminés (culturellement et même historiquement déterminés – semble-t-il ) d’habitudes perceptives, de moyens pratiques et d’outils théoriques permettant de délimiter le champ des objets et/ou expériences artistiques. Le régime qui a contribué à engager une rupture irréversible avec le système traditionnel des Beaux-Arts (à savoir : le régime esthétique de l’art – qui affecte a priori les expériences artistiques contemporaines) se caractérise essentiellement chez Rancière par deux mouvements : (1) effacement des spécificités des arts (au profit d’une expérience sensible commune à tous les arts – qu’il faudra définir) ; (2) effacement des frontières qui séparent l’art de l’expérience ordinaire. [less ▲]

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See detailHypothalamic AMPKalpha1 and neuropeptides are involved in neonatal performance of broiler chicks hatched at different times
Wang, Y.; Koppenol, A.; Lesuisse, J. et al

Conference (2014)

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See detailA bi-objective optimization model for a bimodal network of oil transportation
Belaid, Emna ULg; Saadi, Ismaïl ULg; Rigo, Philippe ULg et al

Conference (2014)

Transportation of oil requires attention for a variety of reasons, the most important being the external costs caused by adverse events. These adverse events affect not only the environment costs but also ... [more ▼]

Transportation of oil requires attention for a variety of reasons, the most important being the external costs caused by adverse events. These adverse events affect not only the environment costs but also the societal costs. In this paper, a bi-objective optimization model for a bimodal network of oil transportation is presented. The paper discusses a mathematical model that takes into account two main decision criteria, namely cost and safety. A linear programming model is presented, in which the focus is laid on the different elements that affect the performance of the bi-modal transportation chain of oil. The disturbing elements that are considered include technical failures, road conditions and vandalism acts. Thus, in this study, it is investigated how the bimodal network must be designed to avoid adverse effects caused by these disturbing elements. The goal of the approach is to maximize safety and minimize costs. Data from a real life example (i.e. the Tunisian national oil company) will be used to calibrate the model. [less ▲]

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See detailPrior light history impacts on cognitive brain function
Chellappa, Sarah Laxhmi ULg; Ly, Julien; Meyer, Christelle ULg et al

Conference (2014)

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See detailEst-il possible de sécuriser l’après-restructuration ? Exploration des « cellules de reconversion » belges
Dervaux, Amélie ULg; Pichault, François ULg; Lorquet, Nadège ULg

Conference (2014)

Colloque -Les « cellules de reconversion » belges sont gérées par le service public de l’emploi et ont été créées li y a quelques années à la demande spécifique des syndicats afin de favoriser la ... [more ▼]

Colloque -Les « cellules de reconversion » belges sont gérées par le service public de l’emploi et ont été créées li y a quelques années à la demande spécifique des syndicats afin de favoriser la réinsertion des travailleurs licenciés sur le marché de l’emploi. Comment les travailleurs sont-ils accompagnés dans la période de transition professionnelle post-licenciement ? Ces cellules à vocation sécurisante le sont-elles effectivement ? [less ▲]

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See detailPrior light history impacts on higher order cognitive brain function
Chellappa, Sarah Laxhmi ULg; Ly, Julien; Meyer, Christelle ULg et al

Conference (2014)

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See detailClimatological influences on inland waterway transport capacity
Cools, Mario ULg; Limbourg, Sabine ULg

Conference (2014)

Climate change may affect inland waterway transport through disturbances in waterway hydrology: longer periods with strong water swells and drops. To allow fully loaded barges, the water level must be ... [more ▼]

Climate change may affect inland waterway transport through disturbances in waterway hydrology: longer periods with strong water swells and drops. To allow fully loaded barges, the water level must be neither too high (limited air draught) nor too low (limited draught). Therefore, the water level impacts the load factor of barges and thus the transportation costs. Moreover, in winter, ice jams can paralyze inland waterway traffic on the river. In this paper, the effect of various climatological changes on the capacity of inland waterway in terms of barge transport is examined. The paper focusses on the development of a methodology for assessing the sensitivity of inland waterway systems to climatological changes and takes into account an experts' opinion survey that provides insight into the perceived likelihood of the different scenarios that are investigated. The analysis focusses on the inland waterway systems in Belgium, which has the second highest density of European inland waterways. It enables the integration of inland waterway transport in the intermodal supply chain. The results are related to investment planning and management in inland waterways transport. They are intended to be interesting to researchers and to inland waterways actors developing intermodal transport as well. [less ▲]

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See detailDynamics of human cortical ensembles are set by circadian system and sleep homeostasis
Chellappa, Sarah Laxhmi ULg; Ly, Julien; Gaggioni, Giulia et al

Conference (2014)

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See detailA specific example of exchange: the national churches and their corresponding "nations"
Corswarem, Emilie ULg; Berti, Michela

Conference (2014)

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See detailImpact de la musculation sur la performance en natation
Jidovtseff, Boris ULg

Conference (2014)

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See detailThe political participation of Congolese born again in Brussels (Belgium)
Demart, Sarah ULg

Conference (2014)

While the political participation of African born again christian has been leading to important research, few interest has been provided to the political participation of African evangelical immigrants ... [more ▼]

While the political participation of African born again christian has been leading to important research, few interest has been provided to the political participation of African evangelical immigrants. The ethos churches are calling to suggests however the existence of political expressions. Exemplarity (Lorentzen et Rosalina, 2005), « usefull immigration » (Mossière, 2006), combativity and social mobility (Demart, 2008), « virtuous citizenship » (Fumanti, 2010), etc. is the religious empowerment (Ter Haar, 1998 ; Harris, 2006 ; Adogame, 2007) translatable to political discourse, activity or alliance ? From research lead for ten years within Congolese circles in Belgium, I bring to light this issue looking at the political participation of Congolese born again from religious, associative and political lens. [less ▲]

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See detailShould I Access or Should I Own?
Hazee, Simon ULg; Delcourt, Cécile ULg; Van Vaerenbergh, Yves

Conference (2014)

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See detailLe Théâtre Flamand. Le progrès en scène.
Prina, Daniela ULg

Conference (2014)

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See detailCaractéristiques du capital foncier des exploitations agricoles dans le sud de la Belgique
Terrones Gavira, François ULg; Burny, Philippe ULg; Lebailly, Philippe ULg

Conference (2014)

En Wallonie, région située au Sud de la Belgique, les capitaux mobilisés pour l’activité agricole sont nombreux, variés mais surtout importants. Parmi les capitaux engagés, le capital foncier est l’une ... [more ▼]

En Wallonie, région située au Sud de la Belgique, les capitaux mobilisés pour l’activité agricole sont nombreux, variés mais surtout importants. Parmi les capitaux engagés, le capital foncier est l’une des composantes importantes du patrimoine de l’exploitation agricole. Ce dernier influence directement les décisions qui sont prises à long terme en son sein à savoir, sa politique d’investissement mais également les éléments relatifs à son cycle d’exploitation et à sa trésorerie. La problématique foncière ne doit donc pas être analysée de manière cloisonnée mais doit rester intégrée à la question centrale du financement des exploitations agricoles de manière générale et de la reprise des activités en particulier. Le présent article a pour but de caractériser le capital foncier en Wallonie. Après un descriptif succinct de l’agriculture wallonne, l’importance des capitaux mobilisés pour l’activité agricole en Wallonie par les principaux acteurs du monde agricole est décrite par le biais d’une approche micro-économique basée sur les données du réseau comptable organisé et géré par la Direction de l’Analyse Economique Agricole (DAEA). La deuxième partie, quant à elle, discute de la capitalisation des aides issues de la politique agricole commune (PAC) actuelle mais également future dans le foncier en Wallonie. L’approche est de type théorique et utilise les données de la littérature mais également celles du Système Intégré de Gestion et de Contrôle (SIGEC) de la Direction générale de l’Agriculture, des Ressources naturelles et de l’Environnement (DGARNE) du Service public de Wallonie (SPW), qui a en charge l’octroi des aides à l’agriculture. Enfin, la dernière partie du présent document décrit les difficultés propres aux jeunes agriculteurs et aux nouveaux entrants pour accéder au foncier en Wallonie. [less ▲]

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See detailBayesian approach integrating correlated foreign information into a multivariate genetic evaluation
Vandenplas, Jérémie ULg; Gengler, Nicolas ULg

Conference (2014)

High-perfomance computing facilities proposing shared-memory and distributed-memory multiprocessors are becoming available. With those clusters, parallel computing could lead to increased performances and ... [more ▼]

High-perfomance computing facilities proposing shared-memory and distributed-memory multiprocessors are becoming available. With those clusters, parallel computing could lead to increased performances and problem sizes. However, to our knowledge and especially for variance components estimations, most software available in animal breeding, based on sparse matrices computations, do not allow parallel computing and are limited by memory accessible by the central processing unit, or allow parallel computing only for options with dense matrices computations, which limits anyway problem sizes due to storage of dense matrices. The aim was to propose simple and effective modifications for the BLUPF90 family of programs to reduce computing time with consideration of required memory. Modifications were based on academic free packages proposing solver and sparse inversion for sparse symmetric indefinite linear systems. First, modifications concerned the sparse inversion subroutine implemented in the package FSPAK. Rearrangements of 'do' loops to allow optimizations of computer operations by some compilers and addition of OpenMP directives were performed. The ordering operation was modified to more easily compare a multiple minimum degree algorithm (MMD; implemented in FSPAK) and a multilevel nested dissection algorithm (implemented in METIS 4.0.3). Second, the package PARDISO Version 5.0.0 was used instead of FSPAK. This package proposes in particular a parallel solver and sparse inversion on shared-memory multiprocessors. Modified FSPAK and PARDISO were compared to original FSPAK using MMD through REMLF90. Different models, such as univariate or bivariate (random regressions) test-day animal and single-step genomic models, were tested. All jobs were run 5 times. With an appropriate ordering algorithm, speedup for each REMLF90 iteration were up to 7.5 for modified FSPAK and up to 22.8 for PARDISO with 2 threads. With 4 threads, speedup increased to 8.3 and 32.5, respectively. [less ▲]

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See detailConsumer acceptance of insect-based products
Caparros Megido, Rudy ULg; Gierts, Chloé; Blecker, Christophe ULg et al

Conference (2014)

In this study, sociocultural and food formulation aspects related to edible insects were investigated on Belgian consumers. Hedonic tests were realized to assess the acceptability of insect-based burgers ... [more ▼]

In this study, sociocultural and food formulation aspects related to edible insects were investigated on Belgian consumers. Hedonic tests were realized to assess the acceptability of insect-based burgers and insect-based breads. In the first experiment, four burgers (beef, lentil, beef/insect and lentil/insect) were presented to the participants. In the second experiment, entire mealworms, mealworm bread and mealworm crepes were presented to the participants. No difference of appreciations was noticed between a beef and a beef/insect burger and between a lentil and a lentil/insect burger. Crepes made of mealworm flour were slightly preferred in comparison with mealworm bread and entire mealworms. These results confirm that shape and appearance but also popularization and information spreading are key conditions in the acceptation of insect products in western countries and that insects will preferentially be consumed, in the future, if they are presented in an invisible way and associated with familiar flavors. [less ▲]

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See detailDesign, modelling, performance optimization and experimentation of a reversible HP/ORC prototype.
Dumont, Olivier ULg; Quoilin, Sylvain ULg; Lemort, Vincent ULg

Conference (2014)

This paper presents an innovative system comprising a water/water heat pump connected to a solar roof and a geothermal heat exchanger. This unit is able to invert its cycle and operate as an Organic ... [more ▼]

This paper presents an innovative system comprising a water/water heat pump connected to a solar roof and a geothermal heat exchanger. This unit is able to invert its cycle and operate as an Organic Rankine Cycle. The solar roof is producing a large amount of heat throughout the year. This allows covering the building annual heating needs and furthermore, electricity is produced thanks to the surplus of heat in a so-called HP/ORC reversible unit. This paper is focusing on these three main points: modeling, design and experimentation of the prototype. This paper demonstrates the feasibility of such a prototype with encouraging performance in ORC and HP modes. First simulations of the HP/ORC system, with components optimally sized, indicate that, in ORC mode, for the weather conditions of Copenhagen, the electrical energy produced over one year reaches 4030 kWh and the nominal efficiency of the cycle is 7.6%. The nominal COP of the heat pump is 4.2 (condenser exhaust temperature of 60°C and evaporator supply temperature of 15°C). Experimentally, a COP of 4.21 (condensation temperature of 61°C and evaporation temperature of 21°C). is achieved in heat pump mode and a global ORC efficiency of 5.7% is obtained in ORC mode (condenser exhaust temperature of 25°C and evaporator supply temperature of 88°C). [less ▲]

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See detailFaut-il opérer un cancer du col utérin après radiochimiothérapie initiale?
Ferron, G.; DE CUYPERE, Marjolein ULg; Querleu, D. et al

Conference (2013, December 19)

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See detailPeut-on concilier la phytostabilisation des sols pollués avec la conservation des espèces cupro-cobalticoles dans la région de Lubumbashi (R. D. Congo) ?
Boisson, Sylvain ULg; Collignon, Julien; Ngoy Shutcha, Mylor et al

Conference (2013, December 19)

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See detailLe tradipraticien est un acteur crédible dans l'offre des soins en territoire périurbain: Résultats d'une étude menée dans la commune de Kisenso à Kinshasa, Congo
Manzambi Kuwekita, Joseph ULg; Mbadu Kivuidi, Véronique; Bruyère, Olivier ULg et al

Conference (2013, December 19)

Cette étude examine la perception des tradipraticiens par les populations, afin d’envisager leur intégration dans les politiques de développement de Kisenso par des focus groupes en juillet 2013. 100% de ... [more ▼]

Cette étude examine la perception des tradipraticiens par les populations, afin d’envisager leur intégration dans les politiques de développement de Kisenso par des focus groupes en juillet 2013. 100% de participants reconnaissent l’existence de tradipraticiens et les avoir déjà consultés, 80% déclarent avoir expérimenté la guérison totale. Le recours au tradipraticien est justifié par l’efficacité des soins, le type de maladie, la compétence, la proximité et la possibilité de paiement à crédit. Pour 70% des participants, le tradipraticien doit améliorer les conditions d’hygiène dans la manipulation des produits. La quasi-totalité des tradipraticiens ne sont pas autorisés à fonctionner, dû notamment au coût d’actes administratifs pour l’obtention de l’autorisation et la peur de s’ouvrir aux intellectuels. 20% d’entre eux disent collaborer avec la biomédecine pour les soins de "mbasu", 20% se déclarent spécialistes en ostéologie, 20% dans les soins de "mbasu" et 60% disent tout soigner. Si l’on veut intégrer les tradipraticiens dans les politiques de développement local, on devra supprimer le coût d’actes administratifs, leur accorder des formations, intégrer les soins traditionnels dans les paquets d’activités et leur accorder le statut d’agent de l’Etat. [less ▲]

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See detailPattern of morpho-functional diversifcation of damselfishes (Pomacentridae)
Frederich, Bruno ULg

Conference (2013, December 18)

Coral reef fishes represent one of the most outstandingly diverse assemblages of vertebrates on the planet but our understanding of their mode of diversification remains limited. Currently, some ... [more ▼]

Coral reef fishes represent one of the most outstandingly diverse assemblages of vertebrates on the planet but our understanding of their mode of diversification remains limited. Currently, some biologists are testing various hypotheses about the evolutionary history of coral reef fishes and are exploring the factors driving their diversification. During my post-doctoral research, I explored the pattern of morphological diversification of damselfishes (Pomacentridae, 386 species). I produced a time-calibrated phylogeny based on 8 loci including 208 species and collected eco-morphological data (trophic data, body shape and oral jaws shape) in more than 120 species. Using various phylogenetic comparative methods, I have illusrated that the Pomacentridae observed repeated ecological radiation and morphological convergence during their evolutionary history. I have also highlighted the primary role of a ligament joining the mandible and the hyoid in the evolution and the morpho-functional diversification of pomacentrids. [less ▲]

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See detailValorisation et propriétés des substances humiques des lixiviats de décharge
Tahiri, Abdelghani ULg; Destain, Jacqueline ULg; Thonart, Philippe ULg et al

Conference (2013, December 18)

Des expérimentations ont été menées dans notre laboratoire en utilisant des substances humiques (SH) extraites des lixiviats de cEntre d’Enfouissemnt Techique et des une formulation stable de SH « ... [more ▼]

Des expérimentations ont été menées dans notre laboratoire en utilisant des substances humiques (SH) extraites des lixiviats de cEntre d’Enfouissemnt Techique et des une formulation stable de SH « Humifirst » (12%d’acides humiques et 3% d’acides fulviques) de la compagnie TRADECORP s.a. (Espagne) commercialisée sous l’appelation Humifirst en vue d’en étudier leurs effets sur le développement du système racinaire de vitro-plants de bouleau et d’aulne. Les résultats montrent qu‘un traitement à faible concentration (10ppm) pendant la phase d’élongation des racines affecte la formation des racines latérales formée en présence de SH de lixiviat avec une intensité variable selon l’espèce testée. [less ▲]

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