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Apud urbem Constantinopolim […] Gisleberto […] per nocturnam visionem […] Agatha […] praecepuit ut se […] Cataniam […] reportaret De retour à Catane (1126), Agathe à nouveau entre légende, histoire et art
No full textpeer reviewedLes reliques de sainte Agathe de retour à Catane en 1126 vont régénérer le culte de la vierge martyre
Comment constituait-on un glossaire bilingue dans l’Égypte byzantine ? L’exemple du glossaire gréco-copte de Dioscore d’Aphrodité
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From Lab to Building: Real-World Integration of Phase Change Materials for Comfort, Energy, and Flexibility
Full text linkpeer reviewedPhase change materials (PCMs) are widely promoted for improving thermal comfort and reducing energy demand in buildings. Yet, most studies remain laboratory- or simulation-based, offering limited insight into real-world performance. This paper bridges that gap by synthesizing evidence from eight full-scale, monitored buildings at Technology Readiness Levels (TRL) 6–9, complemented by insights from an expert focus group. Results show that PCM effectiveness is governed primarily by design integration, not material formulation, with placement depth, control strategy, and climate alignment proving decisive. Across cases, measured performance indicates consistent but conditional benefits: peak indoor temperature reductions of 1–3 °C, heating or cooling load savings of 10–25 %, and emerging though under-reported contributions to demand-side flexibility. A typology of PCM integration strategies is proposed, mapping observed outcomes by building type, climate, placement, and control logic. KPI synthesis reveals a previously undocumented trend: a moderate negative correlation between areal storage capacity and comfort-hour improvement, suggesting that greater storage does not necessarily yield better results. The study also identifies structural barriers to deployment, including the regulatory invisibility of latent storage and the absence of standards for building-level PCM testing and certification. By reframing PCMs as integrated building-system components rather than niche materials, this work offers design guidance, performance benchmarks, and a roadmap to advance PCM adoption toward more flexible, resilient buildings.11. Sustainable cities and communities3. Good health and well-being7. Affordable and clean energ
Dry fractionation of faba bean (Vicia faba L. var. minor): An optimized procedure via air-classification
No full textpeer reviewedThe growing global demand for sustainable and nutritious protein sources has intensified interest in legumes such as faba bean (Vicia faba L.), valued for their high protein content, agronomic adaptability, and environmental benefits. However, conventional wet extraction methods are resource- and energy-intensive and often compromise protein functionality. Dry fractionation presents a promising alternative yet remains underexplored for Vicia faba L. var. minor. This study developed and evaluated a novel dry fractionation approach combining ultrafine micronization with three-stage air-classification to produce protein-rich (PRF) and starch-rich (SRF) fractions from dehulled faba bean flour. Micronization effectively reduced the median particle size D50 of dehulled flour, from 15.54 to 9.60 μm, facilitating sharper aerodynamic separation. Subsequent classification at decreasing wheel speeds (9000, 7000, and 5000 rpm) yielded PRFs with protein contents up to 71.98 %. Notably, PRFs exhibited fine particle sizes (D50 < 5.5 μm), consistent with the dimensions of protein bodies, supporting selective concentration and improved dispersion potential. The PRFs were enriched in key amino acids, particularly lysine and glutamic acid, while amino acid-to-protein ratios remained stable, with only minor statistically significant changes for some amino acids (e.g., aspartic and glutamic acid). However, protein yields remained below 18 %, with substantial retention in SRFs, highlighting the typical purity-yield trade-off in dry fractionation. Despite this limitation, the process is scalable, solvent-free, and environmentally favorable. It enables the valorization of both PRFs and SRFs and contributes to the development of sustainable, high-protein ingredients aligned with circular and climate-resilient food systems
Troubles à l’ordre nucléaire. Fissures et corrosion sous contrainte dans les réacteurs nucléaires français
Full text linkpeer reviewedLa découverte en 2021 d’un phénomène générique de fissures dans certains tuyaux des réacteurs nucléaires français a entraîné une crise du secteur et mis sous pression tant l’opérateur EDF que les acteurs de la sûreté. En s’appuyant sur ce qu’Andrew Barry nomme la « politique des matériaux », cet article vise à comprendre comment ces fissures microscopiques troublent l’ordre sociomatériel nucléaire basé à la fois sur une politique de standardisation de l’infrastructure et sur des pratiques de contrôle s’appuyant sur des retours d’expérience. En étudiant un phénomène qui ne cesse d’échapper à des acteurs dont la mission est de le discipliner, cet article montre que ces troubles sont liés à un processus
continu de singularisation des objets nucléaires. Un tel processus interroge l’écart croissant entre la réalité prescrite par les protocoles d'inspection et de maintenance et la réalité singulière des objets qui se dégradent, dont une partie significative des informations échappe aux pratiques censées permettre de prolonger leur durée de vie
Révolutions: de l'événement aux processus. Temporalités, concepts, pratiques
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Effect of focus flood water spreading on recharge in semi-arid climate: case of water spreading weirs in Burkina Faso
No full textpeer reviewedIn recent years, water spreading weirs have been implemented on watercourses in West Africa. This study investigates the hydrological impact of water spreading weirs (WSWs) in the semi-arid Wedbila watershed of Burkina Faso, a region challenged by soil degradation and scarce water resources. The study employs an integrated, multidisciplinary approach combining in situ monitoring of surface water levels, soil moisture at multiple depths, and piezometric fluctuations to capture the influence of WSWs on soil water dynamics and aquifer recharge. Comparative analyses between zones impacted by water spreading and control zones provide a robust empirical basis—making this one of the few West African studies to comprehensively combine these measurements in assessing WSW effects on infiltration and groundwater recharge. Results demonstrate that WSWs significantly enhance soil moisture retention near the surface and notable rises in piezometric levels observed during and after flood events. Correlation analysis of monitored parameters indicated that groundwater recharge is dependent on rainfall distribution, surface water levels, and soil properties. Using soil water balance, the annual infiltration calculated in the spreading zone was 568 mm, significantly exceeding that observed outside the spreading zone. Cumulative infiltration during spreading periods accounted for 57 % of annual infiltration. This water spreading weirs positive impact demonstrates, contingent upon spreading duration, topography and soil characteristics. Importantly, the WSWs as a low-cost managed aquifer recharge (MAR) solution suitable for data-poor, semi-arid regions like Burkina Faso. By enhancing the landscape's capacity to capture scarce and erratic rainfall, WSWs contribute to climate resilience and agricultural productivity in vulnerable rural communities facing increasing water scarcity due to climate change. They serve as a complementary technique for raising the groundwater level when conditions are favorable in Burkina Faso.2. Zero hunger13. Climate actio
The mirage of the silver bullet: Exploring the limitations of high-resolution data in flood model validation
Full text linkpeer reviewedValidation of inundation models presents persistent challenges, particularly in urban floodplains where structural complexity often exacerbates discrepancies between model outputs and observation datasets. Findings from the present study suggest that while availability of high-resolution field data can enhance validation efforts, it is not the final piece of the puzzle. The study highlights the (often inseparable) complex combination of observed data limitations, model uncertainties, and structural discrepancies between model and observed datasets, which strongly influence validation outcomes. Using the July 2021 Vesdre Valley flood in Belgium as an illustrative framework, the research evaluates the performance of a high-resolution 2D hydrodynamic model (WOLF). The unprecedented detail of the post-flood survey provides a unique opportunity for rigorous validation. Four so-called ‘reconciliation methods’ are explored to address structural discrepancies (in post-processing) between observation data and computational outcomes, highlighting the effect of the choice of method. At the highest model resolution (2 m), the critical success index (= 0.86) indicates strong spatial agreement across sectors, with a mean absolute error of 0.56 m in modelled maximum flood depths. By proposing and critically evaluating various methods for reconciling inherent differences between observational and computed datasets, this study highlights the complexity of model validation beyond data availability. Additionally, it offers recommendations for refining post-flood survey methodologies to minimise uncertainties associated with the validation process
