Computational simulations of two-phase flow in porous media are used to investigate the feasibility of replacing a porous medium containing heterogeneities with an equivalent homogeneous medium. Simulations are performed for the case of infiltration of a dense nonaqueous phase liquid (DNAPL) in a water-saturated, heterogeneous porous medium. For two specific porous media, with periodic and rath...

An environmentally benign procedure for the synthesis of vicinal nitrohydrins via the regioselective ring opening reaction of epoxides with nitrite anion using silica-bound 3-{2-[poly(ethylene glycol)]ethyl}-substituted 1-methyl-1H-imidazol-3-ium bromide as an effective heterogeneous phase transfer catalyst was described. Short reaction time, high yield of products, simple work-up proc...

We present analytical expressions and numerical results for the rates of energy exchange between oscillators with environment in a heterogeneous ensemble globally coupled mechanical phase oscillators. The system is stationary motion under combined action an external harmonic excitation, coupling, friction. Individual moments inertia friction coefficients are different Three dynamical regimes, d...

Liquid-phase transmission electron microscopy (LPTEM) is an essential tool for studying the dynamics of materials interactions at nanoscale, in and/or with their operational environment. Microfabricated SiN x membrane cells further allow integration thin-film electrodes that opens technique to studies heterogeneous electrocatalysts under relevant electrochemical conditions. However, experiments...