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Actualités et séminaires

  • 08 Nov Séminaire
    Ion exchange in green rust: Influence of crystal size and structural defects

    Green rust (GR) is a Fe(II)/Fe(III) layered double hydroxide (LDH). Its layers are positively charged because of the occurrence of mixed Fe2+/Fe3+ valence states. The charge is compensated by exchangeable anions located in the interlayer space. Green rust is one of the few inorganic materials with large anion adsorption capacity.

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  • 05 Nov Actualité
    Subvention de recherche de la Fondation Ecologie d'Avenir

    Alexis Maineult est lauréat d'une des trois subventions attribuées par la Fondation écologie d'avenir de l'Institut de France pour son projet de recherche :
    "Suivi de la réponse adaptative des arbres aux variations temporelles de l’environnement par mesure continue de leur potentiel électrique"
    Félicitations !

    Liste des lauréats

     

     

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  • 25 Oct Séminaire
    Neural effects of environmental doses of endocrine disruptors on reproductive behaviors

    In the last decades, reproductive health issues of wildlife and humans have been documented in several locations worldwide. Several examples of associations and links with exposure to chemical contaminants with hormone disrupting activities were reported. Among these endocrine disruptors, two plasticizers (bisphenol A, di-(2-ethylexyl)phthalate) and an alkylphenol (nonylphenol) are abundant organic pollutants. Experimental studies reported adverse effects of developmental exposure to these molecules on peripheral reproductive parameters.

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  • 18 Oct Séminaire
    Ugly Duckling or Beautiful Swan? The opportunities and challenges of passive electrical measurements for groundwater investigations

    Accurate quantification of water movement, both in magnitude and direction, is a necessary component of evaluating any hydrologic system. Groundwater flow patterns are usually determined using a network of piezometers or wells, which can be limited due to logistical or regulatory constraints. In the unsaturated zone, tensiometers can be used to determine unsaturated flow, but require knowledge of site-specific soil moisture dynamics. In either case, piezometers and tensiometers measure potentials from which flow is inferred rather than directly measuring water movement.

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  • 11 Oct Séminaire
    Etude croisée des Sociétés Anciennes et des Paléoenvironnements de l’Altiplano.

    Le site préhispanique de Tiwanaku, situé dans le nord-est de la Bolivie, a fait l’objet de nombreuses études au cours des dernières décennies. Cependant, une grande partie du site reste inexplorée, laissant de nombreuses questions sur la localisation de gisements archéologiques denses, la nature de l'organisation urbaine, les stratégies de gestion de l'eau et les modifications anciennes du paysage.

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