Cultural Heritage and Climate Change: New challenges and perspectives for research

JPI Cultural Heritage & JPI ClimateCollaboration between the two Joint Programming Initiatives “Cultural Heritage and Global Change” (JPI CH), and “Connecting Climate Knowledge for Europe” (JPI Climate) began in 2019 and led to the organisation of a joint workshop a year later. Following the recommendations in the workshop report, an expert working group was set up to scope research gaps and opportunities at the interface of cultural heritage and climate change, culminating in the publication of this White Paper. This strategic document is expected to support the two JPIs to generate policy-relevant research outcomes.Peer reviewe

Neuville-sur-Oise (Val-d’Oise). Chemin fin d’Oise

Le site de Neuville-sur-Oise, à la confluence Seine/Oise, se localise au pied d’un versant calcaire abrupt, sur la rive gauche de l’Oise située à 70 m de l’emprise. Il a livré une stratigraphie relativement dilatée et bien conservée dans la partie est, la plus proche du versant. À cet endroit se succèdent quatre grandes phases d’occupation : le Mésolithique (avec plus de 7 000 pièces en silex), le Néolithique (les trois phases sont représentées par de l’industrie lithique et céramique caracté..

Innovation sportive et relation au marché Analyse des trajectoires sociotechniques de sacs à dos ultralégers

L'allégement du matériel, qui constitue une tendance lourde de l'industrie du sport, nécessite une combinaison parfois problématique de légèreté, de technicité, de confort et de durabilité. Deux trajectoires d'innovation du secteur de l'outdoor (l'une pionnière, l'autre suiveuse) sont décrites dans une perspective sociotechnique qui intègre les dimensions sociale et matérielle des processus. L'accent est mis, dans une perspective diachronique et réticulaire, sur les formes successives des objets, au gré d'influences et de compromis pluriels

De l'objet pionnier à sa diffusion grand public : la cas de sacs à dos innovants

International audienc

Developmental timing of Drosophila pachea pupae is robust to temperature changes

International audienceRearing temperature is correlated with the timing and speed of development in a wide range of poikiloterm animals that do not regulate their body temperature. However, exceptions exist, especially in species that live in environments with high temperature extremes or oscillations. Drosophila pachea is endemic to the Sonoran desert in Mexico, in which temperatures and temperature variations are extreme. We wondered if the developmental timing in D. pachea may be sensitive to differing rearing temperatures or if it remains constant. We determined the overall timing of the Drosophila pachea life-cycle at different temperatures. The duration of pupal development was similar at 25°C, 29°C and 32°C, although the relative progress differed at particular stages. Thus, D. pachea may have evolved mechanisms to buffer temperature effects on developmental speed, potentially to ensure proper development and individual's fitness in desert climate conditions

Developmental timing of Drosophila pachea pupae is robust to temperature changes

International audienceRearing temperature is correlated with the timing and speed of development in a wide range of poikiloterm animals that do not regulate their body temperature. However, exceptions exist, especially in species that live in environments with high temperature extremes or oscillations. Drosophila pachea is endemic to the Sonoran desert in Mexico, in which temperatures and temperature variations are extreme. We wondered if the developmental timing in D. pachea may be sensitive to differing rearing temperatures or if it remains constant. We determined the overall timing of the Drosophila pachea life-cycle at different temperatures. The duration of pupal development was similar at 25°C, 29°C and 32°C, although the relative progress differed at particular stages. Thus, D. pachea may have evolved mechanisms to buffer temperature effects on developmental speed, potentially to ensure proper development and individual's fitness in desert climate conditions

Developmental timing of Drosophila pachea pupae is robust to temperature changes

International audienceRearing temperature is correlated with the timing and speed of development in a wide range of poikiloterm animals that do not regulate their body temperature. However, exceptions exist, especially in species that live in environments with high temperature extremes or oscillations. Drosophila pachea is endemic to the Sonoran desert in Mexico, in which temperatures and temperature variations are extreme. We wondered if the developmental timing in D. pachea may be sensitive to differing rearing temperatures or if it remains constant. We determined the overall timing of the Drosophila pachea life-cycle at different temperatures. The duration of pupal development was similar at 25°C, 29°C and 32°C, although the relative progress differed at particular stages. Thus, D. pachea may have evolved mechanisms to buffer temperature effects on developmental speed, potentially to ensure proper development and individual's fitness in desert climate conditions

MUSIC Speciation of γ-Al 2 O 3 at the Solid Liquid Interface: How DFT Calculations Can Help with Amorphous and Poorly Crystalline Materials

International audienceTransition aluminum oxides, such as γ-Al2O3 or alumina, are widely used in many different technical applications that rely on the surface reactivity of this material at the solid liquid interface. The speciation of surface sites of this material confronts several obstacles. On the one hand, alumina is a poorly crystalline oxide, thus allowing for a limited amount of empirical structural information for an important number of surface sites with different trends in reactivity and, on the other hand, it is a metastable material. In this work, we show several ways in which the multisite complexation model, combined with atomistic information from density functional theory and ab initio molecular dynamics (AIMD), can manage to perform speciation calculations of γ-Al2O3 surface sites at the solid liquid interface. Although the results are in good qualitative agreement with experimental titration curves, and they can serve as a guide for the interpretation of the reactivity of this material at the initial stages of an impregnation experiment and chemical weathering phenomena, this work highlights the need of more complex AIMD simulations to accurately model these phenomena in γ-Al2O3 surface/liquid interfaces

De l'objet pionnier à sa diffusion grand public : la cas de sacs à dos innovants

International audienc