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The surface energy of conducting polypyrrole is shown to undergo a time-dependent decrease before stabilization as evidenced by inverse gas chromatography (IGC). Such behaviour is not observed with conventional polymers (PMMA and PVC) or with conducting polyaniline. This behaviour is partly a manifestation of the high surface energy and/or the relative chemical instability of polypyrrole on the...
Leaching of industrial waste storage settings can lead to severe water ressource pollution. Geomaterials barriers made from cement, bentonite and active carbon can overcome such problems. Retention properties of such barriers towards some volatile organochlorine compounds (dichloromethane, 1,2-dichloroethane, chloroform, trichloroethylene, 1,1,2,2-tetrachloroethane, chlorobenzene) have been assessed...
High throughput applications require dedicated datapaths. Their performance can be improved by selecting an appropriate logic implementation and by optimising the number and position of pipeline registers. The CHOPIN-2 toolbox provides the user with the possibility to generate a number of design alternatives and optimise the clock speed. The CHOPIN-2 system has been implemented and tested on a number...
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