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165  Articles
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Two steps transformation of (+)-citronellal, cyclization and hydrogenation, on ZnBr2/?-Al2O3 and Ni/?-Al2O3 catalyst have been realized with the selectivity to cyclization products (isopulegols) was very high (yield up to ~92.58%) over ZnBr2/?-Al2O3 under... see more

The synthesis of 1,3-dimethyl-6,7-dimethoxy-3,4-dihydroisoquinoline from methyleugenol with application of Ritter reaction for directly cyclization was presented. This research was carried out in 2 steps : (1) Determination of intermediate stability that ... see more

The reaction of catalytic cyclisation of (+)-citronellal has been done using g-alumina and Zn/?-alumina as catalysts. Zn/?-alumina catalyst was prepared by impregnation of ZnBr2 into solid of ?-alumina in methanol as a solvent. The calcination process is ... see more

An enantiomer molecule consisted of the chiral atom has different structure conformations, which exhibit different activities as well. Yet, its separation considerably difficult since ordinary separation could not separate both molecules. One of the popul... see more

Extended Spectrum Beta Lactamases (ESBLs) merupakan enzim yang mampu menonaktifkan antibiotik golongan beta laktam generasi ketiga dan keempat, serta monobaktam. Escherichia coli merupakan kelompok Enterobacteriaceae yang paling banyak ditemukan menghasil... see more

Background: Indonesia is a major producer of several essential oils such as citronella oil, clove oil, cananga oil, vetiver oil, sandalwood oil, and patchouli oil. The Cymbopogon (Poaceae) genus has the most important components of essential oils, namely ... see more

Pada penelitian ini telah dilakukan konversi sitronelal menjadi senyawa isopulegol melalui mekanisme reaksi siklisasi dengan katalis ZnBr2/ß-Zeolit. Sitronelal diisolasi dari minyak sereh wangi dengan metode distilasi fraksional. Katalis ZnBr2/ß-Zeolit di... see more

The infusion practice is one competence aspect from test nurse where a nurse have required ability in the infusion practice precisely and according to prosedur. One the factor influence ability in infusion practice is done during the educational instituti... see more
Arm |  Design |  EA |  Infusion |  Model

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