35 research outputs found
A Nontectonic Origin for the Present-Day Stress Field in the Paris Basin (France)
International audienc
Tangential Streaming Potential along Tubular Membrane Channels under Turbulent Flow Conditions
International audienc
Tangential Streaming Potential along Tubular Membrane Channels under Turbulent Flow Conditions
International audienc
Functionalization of organic membranes by polyelectrolyte multilayer assemblies. Application to the removal of copper ions from aqueous solutions
International audienc
Caractérisation in-situ de dépÎts formés en filtration membranaire par potentiel d'écoulement
International audienc
Characterisation of TiO
Titanium oxide pigments, coated with SiO2-Al2O3 system, prepared following four different synthesis ways, have been characterised by 27Al high resolution solid-state NMR. The spectra of
these âmodel" pigments depend upon the synthesis path and the annealing temperature. MQ-MAS experiments are used to separate the different contributions, which overlap in the usual single
pulse experiment MAS spectrum. From CPMAS and REDOR experiments, it is possible to describe further the different Al6 species evidenced by MQ-MAS
Modélisation statistique du comportement d'une mousse de mélamine en compression
On Ă©tudie le comportement mĂ©canique d'une mousse de mĂ©lamine en compression uniaxiale. Le modĂšle rhĂ©ologique retenu s'inscrit dans une formulation thermodynamique qui fait intervenir la notion d'Ă©tat relaxĂ©, dĂ©fini comme Ă©tant un Ă©tat d'Ă©quilibre mĂ©tastable. On montre que la contrainte de Cauchy Ă l'Ă©tat relaxĂ© peut ĂȘtre obtenue par une maximisation de l'entropie de Shannon du milieu sous certaines contraintes gĂ©omĂ©triques. Les multiplicateurs de Lagrange introduits pour rĂ©soudre le problĂšme variationnel sont dĂ©finis comme les forces associĂ©es Ă ces contraintes gĂ©omĂ©triques
Polyelectrolyte modification of ultrafiltration membrane for removal of copper ions
International audienc
Preparation of polyelectrolyte-modified membranes for heavy metal ions removal
International audienc