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Using Petri nets to model reconfigurable systems, where structure changes during runtime, have been one of the research axes in high level Petri nets domain. Numerous formalisms with different particularities have been proposed. These formalisms try to deal with some aspects of these systems. In the present paper, we propose a new PNets-based formalism “Flexible Nets” that we consider more general...
The effects of three aglycon flavonols (myricetin, quercetin, and kaempferol) and the natural glycoside rutin on superoxide anion radical generating systems were investigated. Quercetin, myricetin, and kaempferol inhibited the formation of uric acid from xanthine by xanthine oxidase, while rutin was ineffective. The generation of superoxide anion radicals by this system was determined by either reduction...
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