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MT180 is much more than a competition: it is a real exercise in popularization that highlights the creativity, commitment, and ingenuity of young researchers. With humor, simplicity, or emotion, each participant recounts their research, its challenges, and their discoveries, in order to reveal science in a different light.Are you curious to see how sometimes highly specialized theses can become captivating stories in just a few minutes? Would you like to encourage the Namur candidates who will be taking to the stage?Save the date for Friday, March 27, 2026, and come support them!Practical information (schedule, location, registration details) will be announced shortly. Stay tuned: the event promises to be an inspiring evening that is accessible to all. More info and previous editions

JuryDr. Nikolai TUMANOV (UNamur), PresidentProf. Bao-Lian SU (UNamur), SecretaryProf. Yann GARCIA (UCLouvain)Prof. Teng BÊN (Jinhua University)Prof. Guillaume BERIONNI (UNamur)Prof. Alain KRIEF (UNamur)Prof. Alain KRIEF (UNamur)AbstractPorous crystals with structural flexibility are difficult to realize because flexible molecules often rearrange or leave the lattice, leading to pore collapse. Since the early 2000s, it has become clear that combining robust intermolecular interactions with flexible linkers and deformable nodes can stabilize porous crystals during guest removal. Frameworks such as MOFs, COFs, and HOFs benefit from strong noncovalent interactions, yet permanently porous HOFs remain uncommon due to dense molecular packing.Porous organic salts (POSs) offer an alternative strategy, assembling predictable networks from oppositely charged organic ions where electroneutrality and stoichiometry guide structure formation. However, most 3D POSs rely on planar guanidinium or tetrahedral tetraphenylmethane derivatives, resulting in a narrow set of topologies compared with the thousands of 3D nets catalogued in the Reticular Chemistry Structure Resource (RCSR).Here we report triptycene-based ionic frameworks (TIFs) formed via charge-assisted ammonium-sulfonate hydrogen bonding. By tuning triptycene symmetry and functionalization, together with sulfonate linker geometry, we generated diverse supramolecular architectures with tailored porosity, stability, and function.

JuryProf. Guillaume BERIONNI (UNamur), PresidentProf. Stéphane VINCENT (UNamur), SecretaryProf. Carmen GALAN (University of Bristol)Dr. Louis FENSTERBANK (Collège de France)Prof. Raphaël ROBIETTE (Université catholique de Louvain)AbstractCarboxylic acids are ubiquitous in nature and inexpensive compounds. Decarboxylation has become a key chemical transformation and has been widely reported in organic chemistry except for carbohydrates. This reaction can be catalyzed by transition metal and can also be induced by light, thermal activation, or photocatalysis. Borylated compounds have stimulated the pharmaceutical industry's interest (Boromycin, Bortezomib or boron neutron capture therapy). Recent methodologies have been developed to transform carboxylic acids to boronate esters by metal-catalyzed or light-promoted or photocatalyzed reactions. In this thesis, we explored the synthesis of borylated carbohydrates through a decarboxylation pathway. More specifically, sialic acids being among the most important carbohydrates in glycobiology, we addressed the problem of the synthesis of borylated sialic acids. On the other hand, organophosphates play an important role in diverse fields: in materials chemistry, in agriculture, in organic chemistry, and in biochemistry. Phosphorylation is a key reaction in biological processes such as signal transduction and cell activity regulation. The formation of phosphorylated carbohydrates has been widely described through two-electron mechanisms. However, radical phosphorylation of carbohydrates remains unexplored. This Ph.D. thesis describes the development of new methodologies for the decarboxylative functionalization of carbohydrates, focusing on borylation and phosphorylation..

As part of its seminar, Centre Arcadie will be pleased to welcome Igor Krtolica for a session devoted to his book Romain Gary. De l'humanisme à l'écologie, Gallimard, 2025.Maître de conférences en philosophie à l'Université de Picardie Jules-Verne, junior member of the Institut universitaire de France, Igor Krtolica is the author (in addition to the work to be discussed) of Gilles Deleuze (PUF, coll. "Que sais-je? ", 2015), of Gilles Deleuze et Félix Guattari : Une philosophie des devenirs-révolutionnaires(Éditions Amsterdam, 2024) and of a commentary on an extract from Romain Gary's Les Racines du ciel entitled Antifascism, humanism and ecology (PUF, coll. "Classiques de l'écologie", 2025).After a presentation of the work, Igor Krtolica will be interviewed by Jean-Baptiste Vuillerod and Thibault De Meyer.Free admission. All welcome.Book presentation 1956: the Prix Goncourt is awarded to Racines du ciel, a novel whose hero, Morel, fights against the extermination of elephants in an Africa struggling for independence. Romain Gary described it as the first ecological novel. Ecology enabled him to resolve the unbearable political contradiction in which the post-war West finds itself: the impossibility of believing in man, the impossibility of giving up believing in man. How can we continue to give meaning to the idea of civilization? If we are to maintain the humanist ideal, we need to wage a battle in which man is no longer at the center. Such is the paradox explored here. This literary and philosophical essay reveals the complexity of Romain Gary's thought, his constant irony and humor, his contradictions, his rejection of dogmatism. And its modernity: ahead of his time, the novelist anticipated the controversies driving contemporary ecological thinking, where the human being is only a part of nature, but where nature itself becomes inseparable from history, society and politics. This previously unpublished synthesis of Romain Gary's work is an original analysis of the tension between humanist commitment and ecological cause.. Toutes les activités du Centre Arcadie

As part of its seminar, Centre Arcadie will be pleased to welcome Jeanne Etelain for a session devoted to her book Zones. Terre, sexes et science-fiction, Flammarion, 2025.Jeanne Etelain, PhD from New York University and Université Paris-Nanterre, teaches philosophy and contemporary theory at the École supérieure des Beaux-Arts de Montpellier.After a presentation of the book, Igor Krtolica will be interviewed by Jean-Baptiste Vuillerod and Thibault De Meyer.After a presentation of the book, Jeanne Etelain will be interviewed by Ludovic Dubois, Nathalie Grandjean and Sébastien Laoureux.Free admission. Welcome to all.Book presentation Zone: this ubiquitous term nevertheless remains elusive. In a stunning conceptual investigation at the crossroads of geography, psychoanalysis and science fiction, Jeanne Etelain explores how "zone" has become central to understanding space, in the contemporary context of a crisis in the planet's conditions of habitability. The zone thus emerges as a spatial modality that defies habitual categories, confronting us with space's power to act, whether it's nature, the Earth or the body. All Centre Arcadie activities

Conference organized by Centre Arcadie and the Department of Philosophy as part of the "Philosophie du cinéma" course and the "Cultures et pensées cinématographiques" Specialization Master's degree.Dork Zabunyan is Professor of Film Studies at Université Paris 8 Vincennes-Saint-Denis. His publications include Les Cinémas de Gilles Deleuze (Bayard, 2011), L'Insistance des luttes - Images, soulèvements, contre-révolutions (De l'incidence éditeur, 2016), Foucault va au cinéma (Bayard, 2011) with Patrice Maniglier, Jacques Rancière et le monde des images(Mimesis, 2023).In 2020 he published Fictions of Trump. Puissances des images et exercices du pouvoir(Le point du jour). In this conference, the aim will be to take up this work in the context of Trump's second term.Presentation of the workDonald Trump's body is almost everywhere, outside us, on our screens, caught up in information channels that disseminate still and moving images of him. He is also present within us, more or less floating, in the minds of his detractors and supporters alike. The 45th President of the United States of America is not, however, the book's only subject. Based on his countless audiovisual representations, both before and after his election, the aim here is to explore the function of images in the exercise of power today, the stories they tell and the discourses they condition. Two questions run through this essay: what is this strange love of power, conveyed by images of an authoritarian leader, to which individuals who have no interest in voting for him adhere? What filmic counter-fires, real or imagined, are likely to mobilize the powers of images to evade this power, or even to thwart it? All Centre Arcadie activities

Program 12:45 | Welcome13:00 - 13:10 | Introduction by the Center's Co-Directors: Stéphanie Wattier and Géraldine Mathieu:Combating sexual violence - Legal approaches13:10 - 14:00 | FIRST ROUND TABLE: SEXUAL VIOLENCE AGAINST CHILDRENModerator : Nathalie Colette-Basecqz (professor at UNamur)The sexual self-determination of online minors in the light of their vulnerability | Géraldine Mathieu (professor at UNamur), Emma Bourcelet (assistant at UNamur)Child sexual assault allegations and civil accommodation litigation | Michaël Mallien (lecturer at UNamur), Céline Derclaye (assistant at UNamur) and Pauline Mailleux (assistant at UNamur)Sexual violence committed by members of the Church | Stéphanie Wattier (professor at UNamur) and Romain Mertens (lecturer at UNamur)14:05- 14h55 | SECOND ROUND TABLE: SEXUAL VIOLENCE AGAINST OTHER VULNERABLE PERSONSModerator: Stéphanie Wattier (professor at UNamur)La libération de la parole des personnes en situation de handicap victimes de violences sexuelles | Justine Dehon (coordinatrice et chargée de projets pour le service Handicap & Santé)Les violences sexuelles à l'égard des personnes âgées | Albert Evrard (lecturer at the Institut catholique de Toulouse)The administrative approach to sexual violence on higher education campuses from a disciplinary angle | Marc Nihoul (professor at UNamur)Sexual violence committed during the Rwandan genocide: 30 years later, new convictions by the Brussels Assize Court | Elise Delhaise (lecturer at UNamur)Obstetric violence and the question of consent | Charlotte Lambert (assistant at UNamur) and Margaux Thiry (assistant at UNamur)The assessment of physical injury to victims of sexual violence | Pauline Colson (lecturer at UNamur)3:00 pm | Coffee breakcafé15h20 | THIRD ROUND TABLE: COMBATTING SEXUAL VIOLENCE ON THE GROUND TESTIMONIALSModerator: Géraldine Mathieu (professor at UNamur)Introduction to psycho-traumatic mechanisms linked to sexual violence | Gwendoline Faravel (project manager and peer-aidante) et Céline Campanella (psychologue)Présentation de la Lawyers Victim assistance | Pascale Poncin (avocate) 17h10 | Conclusions17h25 | Verre de l'amitiéInfos pratiquesLa demande d'intervention pour les frais des magistrats a été introduite auprès de l'IFJ (en cours).- €95.00 incl. VAT: conference registration with book - Free registration for UNamur students and members I want to register

JuryProf. Eli THORÉ (UNamur), PresidentProf. Patrick KESTEMONT (UNamur), SecretaryProf. 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)SummaryThe 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.

Conceptual field theory and didactic situation theory Two complementary theories for thinking about and organizing mathematical learningIn the first part of this talk, I'll propose an introductory situation in literal arithmetic (Barallobres & Giroux, 2008) that will enable me to introduce and illustrate the main concepts and methodological tools of the theory of didactic situations developed by Guy Brousseau (Brousseau, 1997; Bessot, 2024). In the second part, I will give a brief presentation of Gérard Vergnaud's theory of conceptual fields (Vergnaud, 1990; Durand-Guerrier and Saby, 2023), then show how this theory helps to shed further light on the introductory situation.The contributions of the anthropological theory of didactics The Anthropological Theory of Didactics (TAD, Chevallard, 2001) aims to explain why and how a given knowledge lives in a certain institution, and/or is transformed as it passes from one institution to another. This perspective and some of its evolutions will be presented and illustrated in this talk.Students' activities and teachers' practices in the mathematics classroom: analysis methodology with Activity TheoryIn this talk, we will present the founding assumptions of the Activity Theory framework adapted to the Didactics of Mathematics (TADM, Vandebrouck, 2008), showing how this theory gives importance to fine-grained analyses of mathematical knowledge to appreciate classroom developments. We will then exemplify some of these aspects on the teaching of limits at university (Bridoux and Grenier-Boley, 2024).BibliographyBarallobres, G., & Giroux, J. (2008). Environmental deficiencies and regulations in validation situations. N. In Berdnaz, & C. Mary (Eds). L'enseignement des mathématiques face aux défis de l'école et des communautés. Actes du colloque EMF 2006 (CD-ROM). Éditions du CRP https://emf.unige.ch/application/files/1414/5390/4857/EMF2006_GT8_Barallobres.pdfBessot, A. (2003). An introduction to the theory of didactic situations. Cahiers du laboratoire Leibniz, 91. hal-00078794Bridoux, S., & Grenier-Boley, N. (2024). What teaching practices should be used to introduce the limits of functions in the first year of university? A case study. In A. González-Martín, G. Gueudet, I. Florensa & N. Lombard (Eds.), Proceedings of the Fifth Conference of the International Network for Didactic Research in University Mathematics (INDRUM 2024, 10-14 June 2024) (pp. 791-800). Escola Universitària de Sarrià. Univ. Autònoma de Barcelona and INDRUM.Brousseau, G. (1997). Théorie des situations didactiques. Lecture given at the award to Guy Brousseau of the title of Doctor Honoris Causa from the University of Montreal. http://www.cfem.asso.fr/actualites/archives/Brousseau.pdfChevallard, Y. (2001). Organizing study: 1. Structures and Functions. In J.-L. Dorier, M. Artaud, M. Artigue, R. Berthelot, & R. Floris Proceedings of the XIe École d'été de didactique des mathématiques. (pp. 3-32). Editions la Pensée Sauvage.Durand-Guerrier, V., & Nicolas Saby, N. (2023). Usages de la théorie des champs conceptuels en didactique des mathématiques. The example of transitivity. Caminhos da Educação Matemática em Revista, 13 (4),118-134. ⟨hal-04585866⟩Vandebrouck, F. (dir.) (2008). La classe de mathématiques: activités des élèves et pratiques des enseignants. OCTARES Éditions.Vergnaud, G. (1990). Conceptual field theory. Recherches en didactique des mathématiques, 10(2/3), 133-170. In practice Program18:00: Presentation by Viviane Durand-Guerrier 18:40: Presentation by Ghislaine Gueudet 19:20: Presentation by Nicolas Grenier-Boley and Stéphanie Bridoux20:00: Q&A around the three presentationsModalities Required registration via the PhD school website or direct link to the registration form.Or online participation link (via TEAMS).

JuryProf. Nicolas DENDONCKER (UNamur), PresidentProf. Sabine HENRY (UNamur), SecretaryDr. Sébastien DUJARDIN (UNamur)Prof. Pierre OZER (ULiège)Prof. Emmanuel TWARABAMENYE (University of Rwanda)Prof. Caroline MICHELLIER (MRAC and 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), ChairProf. Benoît MUYLKENS (UNamur), SecretaryDr. 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)

JuryProf. Nicolas DENDONCKER (UNamur), ChairProf. Sabine HENRY (UNamur), SecretaryProf. Frédéric SILVESTRE (UNamur)Dr. Sébastien DUJARDIN (UNamur)Prof. Kara PELLOWE (Stockholm University)Prof. Romain GLELE KAKAI (University of Abomey Calavi)Prof. Patrick KESTEMONT (UNamur)Prof. Eli THORE (UNamur)AbstractMangroves 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 thesis is structured into four specific objectives: assessing the role of traditional beliefs and local deities in promoting the sustainable use of mangroves, analyzing 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 analyze mangrove sustainability. The interdisciplinary methodology of this study links plant biology, fisheries sciences, and human geography to analyze 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.