This paper presents the results obtained from the application of computational fluid dynamics (CFD) to modelling the flow field of a Lapple cyclone and to optimizing the cyclone based upon its geometrical parameters. A pre-processor software GAMBIT…
Rotor systems have been widely used in mechanical applications in industry andeven in daily live equipments. The motion effects of the rotor in certain cases can cause discomfort to the user even can cause of failure to the system itself. Therefore…
Photosynthesis is the fundamental basis in green plants, and the principal organ of photosynthesis is leaf. On the basis of water requirements or adaptations, as angiosperm leaves, Anthuriums require abundant soil water and relatively humid…
Screening of candidate tolerant potato (Solanum tuberosum L.) to drought in vitro from callus was aimed to determine the growth and proline content of potato plants. This research was conducted at the Laboratory of Tissue Culture of Dinas Pertanian…
Two aphorpine alkaloids, (+)-lirinine 1 and (+)-lirioferine 2 and two bezylisoquinoline alkaloids (+)-reticuline 3 and (-)-N-Methylisococlaurine 4 were isolated from bark of Cryptocarya crassinervia. The structures were elucidated by spectral…
Seulawah Agam is an active volcano with high 1,810 m located at 5.448°N 95.658°E and close to the capital of Aceh province densely populated. Following Sumatra-Andaman earthquake 26 December 2004, Sumatra Island has increased not only seismicity but…
Red betel (Piper crocatum) is one of traditional medicine that has antibacterial activity. This research was conducted to determine the antibacterial activity of the methanol extract of red betle leaves against growth of Methicillin Resistant…
This study aims to determine solution of Boussinesq equation which is approximated by using asymptotic expansion method. Nonlinearity of Boussinesq equation causes the solution is not easily determined, so the solution is approached through its…
The present study aimed to isolate gram-negative bacteria infected metacarpal of Panthera tigris sumatrae trapped in Subulussalam, Aceh Province. Swab sample was obtained from metacarpal injury of P. tigris sumatrae. Swab sample was cultured to…
Two secondary metabolite compounds of steroid and triterpenoid derivates had been extracted from the leaf of Eclipta alba L. Hassk. The extraction of the compounds was carried out by maceration and then isolated by column chromatography. Structural…