15 research outputs found
Gout in the UK and Germany: prevalence, comorbidities and management in general practice 2000–2005
Nuclear relaxation by molecular reorientation in confinement
The 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
NMR of molecules trapped in sol-gel glasses: Progressive closure of the nanoporosity during drying
We 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
10 ref.International audienc
Crossover from scalar to vectorial percolation in silica gelation
39 ref.International audienc