Preface. Foreword. Scalar dissipation and flame surface density in premixed turbulent combustion. Raison d'être and general formulation of two-point statistical description of turbulent premixed combustion. Iso-scalar surfaces, mixing and reaction in turbulent flows. Dissipation element analysis of scalar fields in turbulence. Comparison of transported scalar PDF and velocity-scalar PDF approaches to 'Delft flame III'. Significance of DNS in combustion science. Two recent developments in numerical simulation of premixed and partially premixed turbulent flames. Turbulent channel flow concentration profile and wall deposition of a large Schmidt number passive scalar. Sedimentation of small praticles : how can such a simple problem be so difficult? Modelling and simulation of powder-snow avalanches. On the modelling of piping erosion. Settling classes for fine suspended particles. On the role of the Jeffreys' sheltering mechanism in sustaining extreme water waves.