We introduce an original chemical reaction between two transparent reactant solutions (fluorescin and potassium ferricyanide), producing a fluorescent product in water (fluorescein). The has tunable kinetics, allowing the quantitative investigation of interplay molecular diffusion kinetics various field topologies. document its sensitivity to ambient pH, temperature, reactants concentrations, e...

Accepted: 12/10/2014 Abstract Extrusion is a thermodynamic process which combines several unit operations including mixing, cooking, kneading, shearing, shaping and forming. The principles of operation are similar in all types: raw materials are fed into the extruder barrel and the screw(s) then convey the food along it. Further down the barrel, smaller flights restrict the volume and increase ...

The kinetics of a detailed chemically reacting system can potentially be ®ery complex. Although the chemist may be interested in only a few species, the reaction model almost always in®ol®es a much larger number of species. Some of those species are radicals, which are ®ery reacti®e species and can be important intermediaries in the reaction scheme. A large number of elementary reactions can oc...