Abstract A continuous-time random walk (CTRW) reactive transport model is used to study the impact of physical heterogeneity on effective reaction rates in porous media a sample length 15 cm over timescales up 10 $$^8$$ 8 s (3 years). The has previously been validated using...

The distribution and evolution of reactive species in a boundary layer characterized by the presence of shallow cumulus over land is studied by means of two largeeddy simulation models: the NCAR and WUR codes. The study focuses on two physical processes that can influence the chemistry: the enhancement of the vertical transport by the buoyant convection associated with cloud formation and the p...

For a family F (a collection of subsets of Z+), the notion of Findependence is defined both for topological dynamics (t.d.s.) and measurable dynamics (m.d.s.). It is shown that there is no non-trivial {syndetic}-independent m.d.s.; a m.d.s. is {positive-density}-independent if and only if it has completely positive entropy; and a m.d.s. is weakly mixing if and only if it is {IP}independent. For...

We prove that C-robustly transitive diffeomorphisms on surfaces with boundary do not exist, and we exhibit a class of diffeomorphisms of surfaces with boundary which are C−robustly transitive, with k ≥ 2. This class of diffeomorphisms are examples where a version of Palis’ conjecture on surfaces with boundary, about homoclinic tangencies and uniform hyperbolicity, does not hold in the C−topolog...

The renormalization, at the next-to-leading order in α s , of the ∆B = 2 operators at the lowest order in the heavy quark expansion, namely in the static theory, is computed taking into account previously missed contributions. These operators are relevant for the calculation of the B 0 – ¯ B 0 mixing on the lattice.

The NOMAD experiment collected unprecedent neutrino data samples, matching both the large statistics of massive calorimeters and the reconstruction quality of bubble chambers. This paper describes the determination of the weak mixing angle which is ongoing in NOMAD, with a target precision of ∼ 1%. In addition, measurements of the νµ quasi-elastic cross-section and of neutrino Charged Current d...

Status of the problem of neutrino masses, mixing and oscillations is discussed. Future perspectives are briefly considered.

A brief summary of the status of neutrino masses, mixing and oscillations is presented. Neutrinoless double β-decay is considered. Predictions for the effective Majorana mass are reviewed. A possible test of the calculations of nuclear matrix elements of the 0νββ-decay is proposed.