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Biosurveillance d'activités stéroïdiennes et dioxin-like dans les eaux de surface françaises par une approche couplant bioessais et échantillonnage ponctuel et passif
No full textInternational audienc
Biomarqueurs de génotoxicité chez l’épinoche à trois épines pour une application en biosurveillance de la qualité des milieux aquatiques
No full textInternational audienc
Waste Hazard Properties HP 4 ‘Irritant’ and HP 8 ‘Corrosive’ by pH and acid / base buffer capacity and concentration
No full textInternational audienc
Three-dimensional hydro-mechanical modelling of suffusion in gap-graded granular soils for engineering practice
No full textInternational audienceCurrently, numerical studies at the real scale of an entire engineering structure considering suffusion are still rare. This study presents a 3D hydro-mechanical continuous modeling approach considering suffusion in gap-graded granular soils for engineering practice. It requires a relevant hydraulic model for suffusion to evaluate the changes in the fines content and a mechanical model for granular soils considering the fines content dependency. To this purpose, the saturated soil has been considered as a mixture of four interacting constituents: soil skeleton, erodible fines, fluidized fine particles, and fluid. The detachment and transport of the fine particles have been modeled with a mass exchange model between the solid and the fluid phases. An elasto-plastic constitutive model for sand-silt mixtures has been developed to monitor the effect of the evolution of both the porosity and the fines content induced by internal erosion upon the behavior of the soil skeleton. For each component of the approach, alternative choices are provided. Simulations of laboratory tests demonstrated the reliability and applicability of this coupled numerical approach for internal erosion problems. Afterwards, to describe more accurately the seepage within the earth structures, an unsaturated flow condition has been implemented into this coupled hydro-mechanical model. A stabilized finite element method was used to eliminate spurious numerical oscillations in solving the convection-dominated transport of fluidized particles. This numerical tool was then applied to the specific case study of a dike-on-foundation subjected to internal erosion. Different failure modes were observed and analyzed for different boundary conditions
Sustainability and safety assessment of DME production from biomass gasification with flexible sorption-enhanced processes
No full textInternational audienc
QAI ARVE : Impact sur la qualité de l'air intérieur des foyers domestiques de la vallée de l’Arve alimentés au bois par un appareil récent performant
No full textInternational audienc
Méthodes in silico et modélisation des mécanismes de toxicité (AOP)
No full textInternational audienc
Health risk assessment of per- and polyfluorinated alkyls
No full textInternational audienceThis examination* of the cumulative health risks of six PFAS aims to: 1) measure the concentrations of each compound in samples of drinking water and household dust; 2) evaluate the doses from four sources (water, dust, indoor air, and food); and 3) analyze the contribution of the compounds and the exposure pathways. The risks appear low in view of the hypotheses applied