15 research outputs found
Gout in the UK and Germany: prevalence, comorbidities and management in general practice 2000–2005
Get PDFNuclear relaxation by molecular reorientation in confinement
No full textThe effect of steric hindrance on reorientational molecular dynamics has been studied both theoretically and experimentally in well-defined geometries. We show that, even for a non-wetting fluid, confinement quenches reorientation. This is unambiguously probed by the nuclearrelaxation of 33S and 13C in a set of calibrated porous glasses saturated with CS2
Spectroscopic Mesopore Size Characterization and Diffusion Measurement in Closed Porosity by Xenon NMR
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NMR of molecules trapped in sol-gel glasses: Progressive closure of the nanoporosity during drying
No full textWe characterize the closed porosity of porous hybrid organic-inorganic sol-gel matrices. 2H-nuclear relaxation of d16-adamantane confined in these pores evidences a molecular translational
motion inside the porous network. The pores are shown to be interconnected at the submicrometric scale. By modelling the effect of interpore molecular jumps on the lineshape, we characterize
the progressive closure of the nanoporosity during drying
Si NMR and viscosity study of the sol-gel transition and evolution after the gel time
No full text10 ref.International audienc
Crossover from scalar to vectorial percolation in silica gelation
No full text39 ref.International audienc
Phylogeny of Grumichellini Morse, 1981 (Trichoptera: Leptoceridae) with the description of a new genus from southeastern Peru
No full textMolecular Dynamics Simulation Study of Growth Regimes during Polycondensation of Silicic Acid:  from Silica Nanoparticles to Porous Gels
No full textThe time evolution of the sol-gel process:29Si NMR study of hydrolysis and condensation reactions of tetramethoxysilane
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