Based on the questionnaire to students UNNES Natural Sciences Department of Chemistry, professor of learning methods are still in the form of lectures and such very boring for students.Moreover, the material is an organic chemistry lecture course, especially the less favored and considered difficult by students because it is abstract, so it needs t
Mixed-initiative interaction is a naturally-occurring feature of human-human interactions.It is characterised by turn-taking, frequent change of focus, agenda and control among the "speakers".This human-based mixed-initiative interaction can be implemented through mixed-initiative systems.This is a popular approach to building intelligent systems t
Toona sinensis leaf is used as a seasonal vegetable in Korea.A 70% ethanol extract of these leaves exhibited potent xanthine oxidase (XO) inhibition, with a 50% inhibitory concentration (IC50) of 78.4 µM.To investigate the compounds responsible for this effect, bioassay-guided purification led to the isolation of five constituents, identified
Arthropods, including MCT insects, convert sterols into cholesterol due to the inability to synthesise cholesterol de novo.24-dehydrocholesterol reductase (DHCR24) plays an important role in the conversion.Not only involving the cholesterol biosynthesis in vertebrates, DHCR24 is required for the conversion of desmosterol into cholesterol in phytoph