11 articles in this issue
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Johnner P. Sitompul,A.N. Istyami,R. Muhtadi,H.W. Lee,H. Rahman
This paper concerns the production of methyl laurate from coconut cream through fractionation of methyl esters. Coconut oil was produced by wet processing of coconut cream. The esters were prepared by reacting coconut oil and methanol using homogeneous ca... see more
M.M. Azimatun Nur,H. Hadiyanto
Microalgae cultivated in mixotrophic conditions have received significant attention as a suitable source of biofuel feedstock, based on their high biomass and lipid productivity. POME is one of the wastewaters generated from palm oil mills, containing imp... see more
Warman Fatra,Randi Sanjaya,Zulfansyah Zulfansyah,Hari Rionaldo,Zuchra Helwani
In Indonesia, 187 million tons of biomass were produced from 8.11 million ha of oil palm plantation in 2009. This massive amount of biomass mainly consists of oil palm fronds (OPF) and oil palm empty fruit bunches (EFB), which are normally categorized as ... see more
Joelianingsih Joelianingsih,P. Putra,A.W. Hidayat,R. Fajar
Calophyllum inophyllum methyl esters have a low oxidation stability value (5-6 h) caused by high amounts of polyunsaturated fatty acid methyl esters (FAME), especially methyl linoleate. Partial hydrogenation was done to reduce the number of polyunsaturate... see more
Xin Wu,Jinjuan Xue,Yuming Zhou,Shuaishuai Ma,Man He
In this study, we fabricated broadband anti-reflection coatings using a method based on layer-by-layer self assembly of positively charged layer double hydroxide (LDH) nanosheets and negatively charged silica nanoparticles via electrostatic interaction. S... see more
Anna Antonyova,Peter Antony,Endra Joelianto
In this research a measurement systemwas developedfor monitoring humidity and temperature in the cavity between the wall and the insulating material in the building envelope. This new technology does not disturb the insulating material during testing. The... see more
Totok R. Biyanto,Akhmad F. Alhikami,Gunawan Nugroho,Ridho Hantoro,Ridho Bayuaji,Hudiyo Firmanto,Joko Waluyo,Agus Imam Sonhaji
In this research, cooling system optimization using thermal energy storage (TES) in shopping center buildings was investigated. Cooling systems in commercial buildings account for up to 50% of their total energy consumption. This incurs high electricity c... see more
Hai Feng Wang,You Hua Fan
The harvesting of wind energy is expected to increase greatly in the future because of its stability, abundance, and renewability in large coastal states such as China. The floating support structure will likely become the major structural form for wind t... see more