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Corrigendum to “Photophysical modulation of D205 dye in acetonitrile-butanol mixtures: Interplay of solvent polarity, hydrogen bonding, and conformational dynamics” [J. Mol. Liq. 435 (2025) 128109]
No full textInternational audienc
Un rôle de genre en faveur d'une éducation physique "féminine" : Jacqueline Roger
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Extracting Affective Meaning from Text Data Using Sentiment Analysis: Applications in Sensory and Consumer Science
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L'utilisation de l'IA générative pour limiter le décrochage en formation à distance d'adultes apprenants
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Intensive management negatively impacts field margin ecosystem service indicators at both field and landscape levels
No full textInternational audienceVegetated field margins generally increase plant biodiversity and connectivity in agricultural landscapes. They can deliver ecosystem services, such as providing food and shelter for insects, or maintaining biotic regulation. But they can also represent a risk, for example by hosting competitor plants or cultivated crop pests. In this work, we evaluated the effects of agricultural practices on indicators of three ecosystem services (providing floral resources for pollinators, reducing soil erosion and conserving plant biodiversity), and one ecosystem disservice (competing with the crop by hosting problematic weeds). We used a French nationwide‐scale monitoring network, composed of more than 450 fields of cereals, vineyards, and market gardening. Plant sampling and agricultural practices surveys were conducted from 2013 to 2018. We unambiguously found that pesticide use, at either field or municipality levels, or both, had detrimental effects on ecosystem service indicators. Herbicide use and fertilization quantity decreased floral resources, affecting both their quantity and diversity. Pesticide use was also associated with fewer nature‐value species and more problematic weeds. Margin management could also sometimes affect the service and disservice indicators. This work not only increases the knowledge on the unintentional negative impacts of agricultural practices on ecosystem service indicators, and then probably on their delivery, but also demonstrates that pesticide reduction is positively associated with proxies for ecosystem services. It also stresses the fact that these practices have to be implemented at both field and municipality levels
Chemical hydrogen storage materials – boranes and silanes catalytic solvolysis and dehydrogenation: a mechanistic and regeneration perspective
No full textInternational audienceHydrogen (H 2 ) has gained a lot of interest as an alternative energy vector, to reduce greenhouse gas emission issues caused by the fossil fuel industry. However, to make hydrogen a real energy carrier in a decarbonated economy, a secure and sustainable supply chain is needed. This approach requires notably safe storage and efficient strategies for recycling of raw materials. We discuss in this survey the state-of-the-art in the field of chemical hydrogen storage (CHS) materials, considering two possible vectors: ammonia borane and hydrosilanes. Regardless of the vector, to achieve real use, it is necessary to understand both the performance of the system and its life cycle, which relates to catalysts structure, and the activation of chemical bonds with efficient and complete catalytic cycles. We give herein an overview of hydrolysis and/or alcoholysis from metals, using coordination complexes, molecular supported catalysts or other materials, including nanocatalysts, with a focus on mechanistic information and understanding. Notably, the studies related to these two vectors can be considered somewhat complementary. Thus, the set of bibliographic report on ammonia borane is very documented in efficient catalytic systems, while its recycling remains at a very early stage. In comparison, hydrosilanes have been much less addressed specifically as a vector for hydrogen, while their reactivity at the molecular scale benefits from a relevant understanding from coordination chemistry studies. In addition, both hydrosilane polymerization and solvolysis reaction enables the release of H 2 , and produces by-products of which added value is already established. This opening the way to economical strategies where recycling can be optional. Nevertheless, the reversibility of hydrosilanes chemistry in H 2 uptake remains attractive and is another option to develop
The Delicate Balance of Wild Foods: Dietary Shifts and Market Integration among the Maijuna in the Peruvian Amazon
No full textFirst publication: 24 November 2025International audienceIn the Peruvian Amazon, wild foods remain vital for the Maijuna people’s diet, culture, and territorial connection. Based on 12 months of ethnographic fieldwork, this chapter explores how wild foods—such as game meat, palm fruits, and insects—are used, consumed, and valued by the Maijuna, and how these practices are affected by integration into the regional market. It specifically focuses on game meat and the fruits of the aguaje palm (Mauritia flexuosa), as these are the most frequently commercialized wild foods. While wild foods continue to ensure subsistence and social reciprocity, their commercialization increasingly reconfigures local diets, prompting the Maijuna to adapt their consumption patterns. While they tend to sell the most profitable species and consume less game overall—relying more on fish—they retain certain animals and parts, such as monkeys, tapirs, heads, and tapir fat, for local consumption. These choices reflect not only economic constraints but also the strong symbolic value attributed to these foods. Similarly, while sustainable harvesting of aguaje fruits responds to ecological concerns and market demand, it also restricts access to palm weevil larvae, revealing a tension between conservation objectives and the preservation of Maijuna cultural practices
First evidence of deleterious effect of pesticide mixture on health status in semi-captive grey partridges
No full textInternational audiencePesticides are mainly used in agroecosystems to control pests. Due to their limited specificity, the resulting widespread contamination may cause unintended effects on non-target organisms that use these habitats. While increasing attention is paid to the relationship between single substances and phenotype on non-target species, their combined impacts are still largely unknown. Since interactions between pesticides may also impact organisms' health, studying them as complex mixtures is the more realistic approach. Here, we present the first experimental study testing the relationship between an environmentally relevant pesticide mixture and health biomarkers on a farmland avian non-target model. To do so, we used 40 semi-captive grey partridges (Perdix perdix) fed for five months with conventional grains. Their plant protection product (PPP) load (i.e., the number of PPPs, the total sum of scaled pesticide concentrations and the total toxicity index) in blood and proxies of health status (evaluated using behavioral and physiological features) were monitored at the end of the exposure period. We demonstrated, for the first time, concerning correlations between PPP load indexes and bird healthrelated features (physical activity, flight initiation distance, eye ring redness and acetylcholinesterase activity). Overall, we highlighted the urgent need to consider environmentally-relevant PPP mixture when biomonitoring non-target vertebrates in ecotoxicological studies.</div
Optimal target search: modeling complex evasive behavior with automata
No full textIn this study, we address the problem of target search, specifically focusing on the search allocation problem which involves optimizing the distribution of a search budget to detect a target. Previous studies in the scientific literature have made oversimplifications about target behavior, typically assuming either that the target has perfect knowledge of the searchers and makes optimal decisions, or that the target's movements are entirely predictable and will not change in response to the search efforts. To overcome these limitations, we propose a new mathematical model that represents the target as a deterministic automaton. This model allows for the representation of complex target behavior, closer from a real human behavior, where the target's strategy can evolve with partial information gained about the searchers and where suboptimal decisions are modeled. The mathematical formulation is a mixed-integer non-linear program, and we propose an adaptation of a Forward-And-Backward heuristic algorithm to provide solutions to this problem.Experimental studies evaluate the feasibility of this approach in terms of computation time and quality of the solutions and demonstrate the potentials and limits of such an approach.</p
