En mai 2019, l’IPBES rendait son rapport sur l’état de la biodiversité. « La nature et ses contributions à la vie des peuples se dégradent partout dans le monde ». C'est à l’intelligence collective de la société que revient le combat, sous des formes à inventer, expérimenter, profiler, propulser. Mille initiatives se construisent à bas bruit. Des r...
Slate rock has been analyzed for more than 170 years and was among the first geological features to be used in a number of countries such as Spain, France, Wales, North America and Brazil. Early observations recognized the importance of slate into the construction of roofs, cladding, pavements, or roads. Natural slate has many features that make it...
Catégorie de soumission : communication longue RÉSUMÉ Cette communication rend compte d'une étude menée à la demande de chercheurs en informatique et d'un industriel, équipementier, engagés dans le développement de nouveaux outils d'actimétrie. Partant d'une demande concernant le décompte des sollicitations biomécaniques et des inquiétudes en conce...
The electronic structure of a semiconductor rules its optoelectronic properties. In photocatalysis, the size of the band gap determines the photons that can be absorbed. The position of the valence band maximum (EVB) and of the conduction band minimum (ECB) fix the potential of the photogenerated holes and electrons, respectively. But each powder h...
IntroductionPhotocatalytic dehydrogenation of alcohols is promising to produce sustainable H2. Many parameters are involved in this photocatalytic process making it hard to design an efficient, cheap and stable photocatalyst. It goes from properties to generate charge carriers to their use to oxidize various molecules or to reduce H+ and to recombi...
Acrolein is widely used as a very good intermediate for numerous syntheses such as methionine, acrylic acid or biocides. Nowadays, acrolein is obtained by oxidation of propylene. Recently, due to the need of reducing greenhouse gas emission and finding more environmental friendly methods of production, new processes have been developed to produce a...
Fibers have been extensively used as a support for the nanoparticles (NPs) as they can be recovered easily from the reaction mixture and can be used multiple times. Thus, these NP decorated fibers have applications in various catalytic reactions, sensing/detection of toxic materials etc. The high surface area of the fibers allows a high NP loading ...
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1. Introduction Particulate Matter (PM) emission abatement for passenger Diesel vehicles has become more and more stringent over the past years. From 2009, Euro 5 standards have permitted to generalize Diesel Particle Filter (DPF) to reduce PM emissions. DPF proved to be an efficient way to trap soot particles in the exhaust, the main drawback bein...
