In order to present a new and high performance structure of PEM fuel cell and study the influence of the flow direction and distribution on the rate of reactants diffusion, three novel models of vertical reactant flow injection into the anode and cathode reaction area field have been introduced. They consist of one inlet and two inlets and also a continuous channel. The governing equations on t...

Sediment transport under unsteady flow condition is studied experimentally. In the first step, sediment transport under different steady flow conditions was measured and an empirical equation was derived for its calculation. In the next step, two continuous and three stepwise hydrographs were generated in the flume, and their sediment transport rate was measured. The continuous hydrographs were...

Enantiomerically pure cyanohydrins are of great importance in the chemical and pharmaceutical industries can be efficiently obtained under flow-through conditions using structured microreactors.

Optimal transportation distances are valuable for comparing and analyzing probability distributions, but larger-scale computational techniques for the theoretically favorable quadratic case are limited to smooth domains or regularized approximations. Motivated by fluid flowbased transportation on Rn, however, this paper introduces an alternative definition of optimal transportation between dist...

Catalytic heterogeneous hydrogenation processes arguably belong to the most valuable synthetic transformations known. Current batch reactor technology is not only time consuming and difficult to set up but also catalyst addition and filtration is hazardous. Because of the aromatic character of many substrates, hydrogenation often requires the use of significant hydrogen pressures in combination...