Reaction of vinylacetylene with [Mo(.eta.5-C5H5)(CO)2]2. Reactivity of [{Mo(.eta.5-C5H5)(CO)2}(.mu.-HC.tplbond.CCH:CH2)]. Crystal structures of [{Mo(.eta.5-C5H5)(CO)2}2(.mu.-.eta.2,.eta.3-HC.tplbond.CCHCH3)][BF4] and of [[{Mo(.eta.5-C5H5)(CO)2}2]2-.mu.-(.mu.-HC.tplbond.CCH2CH2)2]

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Gut microb-aging and its relevance to frailty aging

International audienceThis review explores 'microb-aging' in the gut and its potential link to frailty aging. We explore this connection through alterations in microbiota's taxonomy and metabolism, as well as with concepts of ecological resilience, pathobionts emergence, and biogeography. We examine microb-aging in interconnected body organs, emphasizing the bidirectional relationship with 'inflammaging'. Finally, we discuss how targeting microb-aging could improve screening, diagnostic, and therapeutic approaches in geriatrics

French ichthyological records for 2017

Uncommon records of fishes may evidence local or global changes of fish composition resulting from environmental modifications or anthropic activities. Significant records of uncommon marine fishes, including threatened species, collected in French waters or by French vessels in European waters are reported for the year 2017. They include first, new, rare and unusual records for the following species: Sphyrna zygaena, Acipenser sturio, Muraena helena, Nessorhamphus ingolfianus, Evermannella balbo, Raniceps raninus, Cheilopogon heterurus, Scopelogadus beanii, Zenopsis conchifer, Eutelichthys leptochirus, Serranus cabrilla, Naucrates ductor, Seriola rivoliana, Gobius gasteveni, Gobius paganellus, Lepidocybium flavobrunneum, Ruvettus pretiosus, Hippoglossus hippoglossus, and Sphoeroides pachygaster.Les signalements inhabituels de poissons peuvent témoigner de changements locaux ou globaux résultant de modifications environnementales ou d’activités anthropiques. Des signalements remarquables de poissons marins, comprenant des espèces menacées, collectés dans les eaux françaises ou bien par des navires français dans les eaux européennes sont mentionnés pour l’année 2017. Ils comprennent des premiers et nouveaux signalements ainsi que des signalements rares et inhabituels pour les espèces : Sphyrna zygaena, Acipenser sturio, Muraena helena, Nessorhamphus ingolfianus, Evermannella balbo, Raniceps raninus, Cheilopogon heterurus, Scopelogadus beanii, Zenopsis conchifer, Eutelichthys leptochirus, Serranus cabrilla, Naucrates ductor, Seriola rivoliana, Gobius gasteveni, Gobius paganellus, Lepidocybium flavobrunneum, Ruvettus pretiosus, Hippoglossus hippoglossus et Sphoeroides pachygaster

Decorated Tetrathiafulvalene-Based Ligands: Powerful Chemical Tools for the Design of Single-Molecule Magnets

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