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Through chromatographic techniques, the presence of taxol was detected in the bark, needles, and twigs of the Mexican Yew, Taxus globosa Sch. at levels comparable to that of other species (e.g. T. brevifolia, T. baccatta...

This work describes the effect of several alkaloid fractions obtained from E. americana seeds, which allowed the evaluation of the in vitro toxicity in some crustaceans, such as Daphnia magna and Artemia salina, in the b...

UML (Unified Modeling Language) is one of the most used languages to specify and document informatics applications. However, UML is a generalpurpose language, so it often lacks of elements to model and represent concrete...

Deadlock detection is one of the most discussed problems in the literature. Although several al- gorithms have been proposed, the problem is still open. In general, the correct operation of an algorithm depends on the re...

"In this work a study of a 27-level asymmetric multilevel current source inverter is developed. The presented structure is composed by three current source inverters that together are in a 9:3:1 ratio to produce a curren...