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The absorption of light by molecules has applications in microscopy, medicine and data storage. With this research, the researcher from the UNamur NISM institute fills an experimental gap, which will enable molecular engineers to develop new and more efficient compounds in their various fields of application.

Yves Caudano, F.R.S.-FNRS qualified researcher, member of the NaXys and NISM Institutes and the UR-LLS (Lasers and Spectroscopies Laboratory) research unit, is taking part in a major European research project. The aim? To find new quantum light sources with unprecedented versatility, flexibility and performance.

An international group of researchers, including Professor Yoann Olivier from the NISM Institute at UNamur, has just published in the prestigious journal Nature. The subject: understanding the microscopic mechanisms that lead to the initialisation, reading and erasing of molecular qubits, a new theme in the study of materials, at the frontier between physics and chemistry.

Dr. Sébastien Mouchet, a researcher at UNamur and member of the NISM and ILEE Institutes, has just published the results of research focusing on the effects of pollution on coral reef fish in MDPI-Optics. The findings of the international, multidisciplinary team lead to crucial conclusions with implications for the health of marine ecosystems.

Characterization of trehalase from Acyrthosiphon pisum for the design of new insecticides SummaryAphids are major pests in agriculture, causing direct damage to plants and acting as vectors for phytopathogenic viruses. Conventional insecticides are widely used to control them, but their toxicity and efficacy pose problems in terms of the environment, human health and the emergence of resistance to these compounds. New alternatives are therefore needed, such as biological control using predators or parasitoids. However, these methods are not always economically viable on a large scale. As part of this thesis, another approach is being explored which involves developing new insecticides targeting the biochemical functions of aphids.The project aims to discover new inhibitors of trehalase, an enzyme essential for insect energy metabolism. Inhibition of this enzyme could disrupt vital insect functions without affecting mammals. This research involved several stages: the purification and complete characterization of trehalase from Acyrthosiphon pisum (the model for this study), the in vivo, in vitro and in silico analysis of commercial inhibitors on this enzyme, before moving on to the search for new inhibitors. Two points of integrated insect management were explored, biological and chemical control.The biological side saw the study of a strain of Streptomyces naturally producing trehalase-inhibiting metabolites, notably validamycin A, a molecule recognized in the literature as one of the best inhibitors, but not applicable as an insecticide. Other molecules appear to have interesting features, but we have not been able to isolate and characterize them.The chemical side has enabled us to create a pharmacophore hypothesis based on experimental results on molecules obtained by virtual screening. Although these molecules are not usable as insecticides as they stand, this hypothesis provides a better understanding of trehalase inhibitors in general and can be used to refine future analyses. JuryProf. Jean-Yves MATROULE (UNamur), presidentDr Catherine MICHAUX (UNamur), promoter and secretaryProf. Frédéric FRANCIS (ULiège), co-promoterProf. André MATAGNE (ULiège)Dr Rudy CAPARROS (ULiège)Dr Morgan HANS (Biocidal)

Initiated in 1969 by Pullmann and Del Re, the congress is an annual meeting to promote collaboration and friendship between Latin-speaking theoretical chemists. In its early years, European researchers were the main contributors. Subsequently, the Latin American community has made a major contribution, with the emergence of teams whose international reputation now extends far beyond our own community.We are delighted to be holding this meeting at the University of Namur, 55 years after the first CHITEL was organised in Paris, France. We are sure that this 2024 edition will once again be an opportunity to take advantage of the good humour and dynamism of Latin to encourage, develop and strengthen scientific exchanges.We look forward to welcoming you at the University of Namur,The CHITEL 2024 Local Organising Committee. Website

While still only a dream, the quantum computer is the subject of intense research. The Artemis project, funded by the European Union (EU) and involving UNamur, aims to develop new sources of single photons, and thus lay the technological foundations. A member of the project, physicist Yves Caudano hopes, at the same time, to further explore the foundations of quantum physics.

ECOBAT is an EOS project (FNRS/FWO) that brings together four universities: UCLouvain, KULeuven, the University of Bonn (Germany), and the University of Namur. This consortium currently mobilizes some twenty researchers at all levels (Masters, PhD students, post-docs, promoters), including Dr. Pierre Beaujean, under the supervision of Professor Benoît Champagne..

The success of female Cistercian monasticism in the Southern Netherlands in the 13th century - over forty houses in the dioceses of Liège and Cambrai - is a powerful indicator of the aspirations of a society in transformation, enthusiastic about new forms of spirituality and religious life. For all that, the phenomenon remains surprisingly little studied, despite the wealth of archaeological and historical sources. The program Thursday, December 11, 20259:30am: Welcome10:00am: Introduction by the symposium organizing committeeSession 1 - Chair: Marie-Élisabeth Henneau (Université de Liège)10:30am: Alexis Grélois (Université de Rouen-Normandie, GRHis) - L'appartenance des moniales à l'ordre cistercien (XIIe-XIIIe siècle): False debates and real questions11:30am: Coffee break11:45am: Michel Dubuisson (Abbaye de Villers asbl), Patrice Gautier (Musées royaux d'Art et d'Histoire), Louise Hardenne (Musées royaux d'Art et d'Histoire) - L'abbaye de La Cambre dans la filiation villersoise12:35pm: Lunch breakSession 2 - Chair: Jeroen Deploige (Universiteit Gent)1:40pm: Marie-Christine Laleman (City of Ghent), Els De Paermentier (Universiteit Gent)- The Byloque Abbey in Ghent: between archaeological memory and archival wealth2:30pm: Pierre-Hugues Tilmant (SPW, AWaP), Marie Verbeek (SPW, AWaP), Sarah Cremer (Institut royal du Patrimoine artistique), Nicolas Ruffini-Ronzani (Université de Namur/Archives de l'État à Namur)- Dossier de fondation de l'abbaye Notre-Dame du Vivier: l'archéologie permet-elle lever un coin du voile?3:20pm: Coffee break3:40pm: François De Vriendt (Société des Bollandistes) - Memory and devotion in the female communities of Hainaut and Namurois. What place for local figures and traditions?4:30pm:Robin Moens (FWO/KU Leuven) - (What) spiritual walls? The spirituality of mulieres religiosae enclosed in and outside monastic space17:20: end of first day18:00: verre de l'amitié offered by SPWFriday, December 12, 2025Session 3 - Chair: Geneviève Laurent (SPW, AWaP)9:00: Philippe Mignot (SPW, AWaP) - Clairefontaine Abbey: archaeological data on the origins9:50am: Vincent Debonne (Vlaamse Overheid-Agentschap Onroerend Erfgoed), Robin Moens (FWO/KU Leuven)- Sisters a little slower than we thought. The Cistercian abbey of Val-des-Vierges near Oudenaarde10:40am: Coffee break11:00am: visit to the former abbey of Notre-Dame du Vivier, accompanied by AWaP archaeologists12:00pm: lunch breakSession 4 - Chair: Mathieu Piavaux (Université de Namur)1:00 pm: Virginie Boulez (SPW, AWaP), Alain Marchandisse (FNRS/Université de Liège) - La Paix-Dieu 1240-1244. Foundation of a Cistercian abbey under the episcopacy of Robert de Thourotte. Dialogue of historical and archaeological sources13:50: Marie Demelenne (Musée royal de Mariemont), Patrice Gautier (Musées royaux d'Art et d'Histoire), Jean-François Nieus (FNRS/Université de Namur)- The hermit, the lady and the clerics. Aux origines de l'abbaye de L'Olive (Morlanwelz)2:40pm: coffee break3:00pm: Emmanuel Bodart (Archives de l'État à Namur) - L'abbaye de Félixpré près de Givet. New revelations on its foundation and endowment (1246-1266)3:30pm: Paul Lambrechts (Herita vzw) - Herkenrode Abbey, a millennium of history: how to interpret myths, excavations and sources, and how to incorporate them into a project for the future?4:00 pm: Benoît Rouzeau (Université de Picardie Jules Verne, Trame UR 4284/ LAMOP UMR 858)- General conclusions4:30 pm: end of symposiumProgram in PDF format Organizing committee Aurore Carlier - Société archéologique de NamurPatrice Gautier - Musées royaux d'Art et d'HistoireXavier Hermand - Université de NamurFiona Lebecque - Société archéologique de NamurJean-François Nieus - FNRS/Université de NamurMatthieu Pignot - FNRS/Université de NamurNicolas Ruffini-Ronzani - Université de Namur/Archives de l'ÉtatPierre-Hugues Tilmant - SPW, AWaPMarie Verbeek - SPW, AWaP Practical information The Study Days organizing committee would like to thank the owners of the Abbey Notre-Dame du Vivier for their welcome and for making the premises available.Surrounding these Study Days revolves a multitude of events dedicated to the Abbey Notre-Dame du Vivier de Marche-les-Dames. To find out more, see the program at www.lasan.be I register it

At a time when bacterial resistance to antibiotics is a public health problem, Professor Stéphane Vincent's team is currently developing dynamic constitutional frameworks (Dynamic Constitutional Frameworks, DCF): a molecular system that would be able to break down certain resistances and thus deliver antibiotics as close as possible to pathogens.