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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Role of microfluidics in discovering new marketable substances – a survey
 Tesař, Václav
Paper surveys developments in combinatorial chemistry and related search for new medicaments and biomedical procedures, characterised by simultaneous testing of many substances (and their mixtures). Attention is focused on advantages offered in this field by small-scale no-moving-part microfluidics. Typical problems and their solution are then demonstrated on author’s development of a microfluidic unit for parallel tests of catalyst having potential to improve the effectiveness of Fischer-Tropsch synthesis of liquid fuels from biomass.
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Trapped Vortex Ring
 Tesař, Václav
Paper discusses an almost unknown and yet interesting operating principle of fluidic nomoving-part devices for flow control. The principle is based on the properties of vortex rings. A standing vortex ring is kept in a semi-toroidal recession positioned opposite to an annular nozzle from whichissues an annular fluid jet. The ring can exist in the recession with two alternative senses of rotation so that the annular jet is led to either the central exit through the centre of the vortex, or to the outer spacepast the outer vortex circumference.
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