A hyphenated system consisting of solid on line phase extraction (SPE)-reversed phase liquid chromatography-fluorescence detection for the determination of polyaromatic hydrocarbons in water samples, at ppt level is described. A multi cartridge system is used. Different parameters of on-line SPE procedure have been evaluated, in order to achieve pr...
In this paper, we propose a rule-based reactive rescheduling system to cope with several unexpected process events for multi-purpose batch process operations. The developed system consists of two major modules. The first module continuously monitors production status whether a processing task starts at the scheduled starting time and completes at t...
It is well-known that PID controllers show poor control performances for an integrating process and a large time delay process. Moreover, it cannot incorporate ramp-type set-point change or slow disturbance. We discuss the above-mentioned limitations of the PID controller. Through the analysis of the limitations, simple techniques are developed to ...
Germany
Es wird eine Uebersicht ueber die vom Chemical Abstracts Service (CAS) angebotenen Moeglichkeiten fuer Online-Recherchen in Chemiedatenbanken gegeben. Ausserdem wird ueber die spezifischen Inhalte spezieller Datenbanken informiert / An overview is given on the possibilities of databases by the Chemical Abstracts Service (CAS) for online searching. ...
Germany
Germany
Germany
Germany
