Résultats de recherche

Un pied dans le passé, l’autre dans l’avenir. De la granulation étrusque à l’analyse PIXE, Serge Mathot a construit une carrière unique, entre patrimoine scientifique et accélérateurs de particules. Portrait d’un alumni passionné, à la croisée des disciplines. 

Laura Gagliardi est une chercheuse internationale renommée à l'Université de Chicago, reconnue pour ses contributions pionnières dans le domaine de la chimie théorique et computationnelle, en particulier dans l'étude des matériaux réticulaires tels que les structures métallo-organiques (MOF). La chaire Solvay/Syensqo en chimie rend hommage aux chimistes qui ont réalisé des avancées exceptionnelles dans leur domaine. Dans le cadre de cette distinction, la professeure Gagliardi a donné une série de conférences dans plusieurs universités belges, dont un séminaire organisé à l'Université de Namur, par le Département de chimie. Interview.

À l’heure où la désinformation, la post-vérité et le complotisme fragilisent la confiance dans les sciences, l’UNamur accueille SPiN (Science & Philosophy in Namur), un nouveau centre de recherche interdisciplinaire qui interroge la place des sciences dans la société. Fondé en septembre dernier par Olivier Sartenaer, professeur de philosophie des sciences à l’UNamur, SPiN rassemble des philosophes et des scientifiques autour d’une vision commune : développer une réflexion critique et accessible sur les sciences dans toute leur diversité.

Pourquoi suivre des cours d’anglais quand on se destine à devenir vétérinaire ? Comment enseigner l’espagnol à de futurs ingénieurs de gestion ? Loin des listes de vocabulaire ou des cours en laboratoire avec un casque, elles sont enseignées comme de véritables compétences transversales, essentielles pour exercer les métiers de demain. 

L’Université de Namur propose prochainement deux leçons inaugurales de deux Chaires Francqui, l’une en Faculté des sciences et l’autre en Faculté de droit. Accessibles à tous et toutes, les leçons inaugurales seront suivies par un drink local. Ces évènements sont gratuits, sur inscription.

JuryProf. Eli THORÉ (UNamur), PrésidentProf. Patrick KESTEMONT (UNamur), SecrétaireProf. Ranjàna RANDRIANARIVO (Université d’Antananarivo)Dr Valérie CORNET (UNamur)Dr Omayma MISSAWI (UNamur)Prof. Catherine MOUNEYRAC (Université Catholique de l’Ouest)Prof. Gauthier EPPE (ULiège)RésuméThe widespread production and use of plastics have led to their continuous release into the environment. Microplastics (MPs) are now ubiquitous in aquatic ecosystems, where their bioavailability to organisms and potential entry into the food web raise serious environmental and public health concerns. Substantial progress has been made in understanding MP toxicity, and their hazardous potential is now widely acknowledged. However, MP toxicity studies remain complex, as multiple particle characteristics, such as size, shape, polymer type, and sorbed contaminants might influence both bioavailabilityTo bridge this gap, the present thesis adopted a dual, complementary approach: (i) characterizing the environmental occurrence and bioavailability of MPs, and (ii) assessing the ecological relevance of using environmentally derived MPs in in vivo toxicity experiments.Overall, this thesis provides insights into the reproductive and transgenerational effects of environmentally relevant MPs while underscoring the importance of considering particle–pollutant interactions. By combining in situ field data with in vivo laboratory experiments, it demonstrates that the use of environmentally derived MPs represents a more realistic and ecologically meaningful approach to hazard characterization. Further studies should be carried out in this same perspective to generate robust, exploitable data and contribute to establishing a comprehensive MP risk characterization.

L’Amérique du Sud est un sous-continent d’une grande richesse naturelle et culturelle. Entre préservation de la biodiversité et coopération au développement, l’UNamur entretient des partenariats précieux pour répondre aux défis de l’érosion de la biodiversité et comprendre les transformations socio-économiques actuelles. Immersion en Équateur et au Pérou. 

JuryProf. Nicolas DENDONCKER (UNamur), PrésidentProf. Sabine HENRY (UNamur), SecrétaireDr Sébastien DUJARDIN (UNamur)Prof. Pierre OZER (ULiège)Prof. Emmanuel TWARABAMENYE (Université du Rwanda)Prof. Caroline MICHELLIER (MRAC et UCLouvain)AbstractThis research investigates community vulnerability to landslides and floods in Northwestern Rwanda, hazards that frequently interact to produce compound disasters. The research focused on understanding the institutional, social, and structural factors that shape vulnerability and adaptive capacity in this disaster-prone region. Using a mixed-methods approach at local-scale, including institutional analysis, household surveys (n = 904), and field observations, the research highlights how vulnerability is shaped by socio-economic conditions, weak institutional coordination, and limited adaptive capacity. A Contextualized Vulnerability Index (CoVI) was developed to map vulnerability patterns, revealing particularly high vulnerability in landslide-prone and dual-hazard zones. The analysis of adaptive capacity showed that while awareness of hazards is high due to lived experiences, financial constraints, and limited technical knowledge hinder communities’ ability to adapt effectively. The study contributes to the literature on social vulnerability and disaster risk reduction by emphasizing the importance of locally grounded, evidence-based strategies to strengthen community resilience in hazard-prone regions.

Abstract Since its emergence in 1996, the Asian H5 Goose/Guangdong (Gs/Gd) lineage has circulated widely in poultry in southern China, spilling over to wild birds by 2002. Wild bird infections facilitated global dissemination via migratory waterfowl and repeated spillback into poultry, challenging the view that HPAI primarily arises from LPAI mutation. Subclade 2.3.4.4b emerged in Asia in 2013, reached Europe in 2016, caused recurrent epizootics, diversified into multiple genotypes, became dominant in wild birds, and shows zoonotic potential.This thesis investigates critical knowledge gaps regarding H5Nx subclade 2.3.4.4b in poultry: (1) early within-flock spread after punctual introduction in chickens, particularly during the first European epizootics; (2) influence of pre-existing immunity on silent circulation; (3) limitations in diagnostic throughput during epizootic peaks; (4) potential of environmental surveillance, including air and dust sampling; and (5) impact on egg contamination and the reproductive tract, relevant for food safety and zoonotic risk.Four main objectives were addressed: (1) development of an experimental model simulating punctual introductions and spread, comparing 2017 and 2020 strains and assessing pre-existing immunity; (2) enhancement of diagnostic capacity via alternative sampling, semi-automated RNA extraction, and high-throughput processing; (3) evaluation of air and dust sampling for virus monitoring under experimental and field conditions; and (4) assessment of egg contamination risk. Alternative sampling and environmental monitoring were also applied to Newcastle disease virus as a comparative notifiable pathogen. Jury Prof. Catherine LINARD (UNamur), PrésidenteProf. Benoît MUYLKENS (UNamur), SecrétaireDr Damien COUPEAU (UNamur)Dr Jean-Luc GUÉRIN (INRAE & ENVT)Dr Cyril BARBEZANGE (ECDC)Dr Steven VAN BORM (Sciensano)Dr Mieke STEENSELS (Sciensano)Dr Bénédicte LAMBRECHT (Sciensano)

À l’UNamur, la recherche ne reste pas confinée aux laboratoires. De la physique aux sciences politiques, en passant par la robotique, la biodiversité, le droit, l’IA et la santé, les chercheurs collaborent chaque jour avec de nombreux acteurs de la société. Objectif ? Transformer les idées en solutions concrètes pour répondre aux enjeux actuels. 

JuryProf. Nicolas DENDONCKER (UNamur), PrésidentProf. Sabine HENRY (UNamur), SecrétaireProf. Frédéric SILVESTRE (UNamur)Dr Sébastien DUJARDIN (UNamur)Prof. Kara PELLOWE (Stockholm University)Prof. Romain GLELE KAKAI (Université d’Abomey Calavi)Prof. Patrick KESTEMONT (UNamur)Prof. Eli THORE (UNamur)RésuméMangroves play an important role in environmental conservation and livelihood provision yet remain one of the most threatened ecosystems on earth. This doctoral study assesses pathways to enhance coastal sustainability in the Anthropocene, by promoting the sustainable use of mangroves and strengthening their social-ecological resilience through an interdisciplinary approach. The these is structured into four specific objectives: assessing the role of traditional beliefs and local deities in promoting the sustainable use of mangroves, analysing the synergies between legal frameworks and traditional beliefs in enhancing the social-ecological resilience of mangroves, developing a novel interdisciplinary framework to evaluate the social-ecological resilience of mangroves, and operationalizing the proposed framework in Benin’s mangroves, West Africa.  We collected field data using ethnobiological surveys, drone image analysis and document review, in-depth interviews, focus group discussions, plant and fish inventories across three coastal communities in Benin. The study draws insights from the seven principles of resilience to analyse mangrove sustainability. The interdisciplinarity methodology of this study links plant biology, fisheries sciences, and human geography to analyse mangroves as complex social-ecological systems. Findings of the thesis show that traditional beliefs and local deities play a significant role in regulating the use of mangrove resources, while the overlapping of formal and informal institutions offer opportunities to enhance their social-ecological resilience. The novel proposed framework called Mangrove Social Ecological Resilience Appraisal (MaSERA) outlines variables and indicators tailored to mangroves to assess their social-ecological resilience. Its application in Benin highlights its potential in identifying factors that enable or erode mangrove resilience, for informed decision making. The study argues that promoting the sustainable use of mangroves and enhancing their social-ecological resilience represent dual imperatives for achieving coastal sustainability in the Anthropocene. It contributes to the growing body of knowledge on mangrove conservation and provides actionable insights for integrated coastal zone management.

À l’UNamur, les parchemins sont bien plus qu’un objet de curiosité : ils sont au cœur d’une aventure scientifique interdisciplinaire. Partie des sciences historiques et de la conservation, la recherche a progressivement intégré les disciplines de la physique, la biologie, la chimie et l’archéologie.  De cette convergence est née une activité de recherche en sciences du patrimoine, moteur de projets innovants, dont les travaux de doctorat de Marine Appart, sous la supervision du Professeur Olivier Deparis. Cette recherche est aujourd’hui couronnée par une publication dans la prestigieuse revue Heritage Science (groupe d’éditions Nature).