Judul: Process deisgn for the production of synthetic lubricant base fluid from chemically modified Jatropha curcas L. oil
Abstrak: At present, the demand of the mineral oil has increased, but the supply has decreased. This condition has pushed the production of synthetic lubricant from vegetable oil as base fluid. Although the price of vegetable oil – lubricant base fluid are more expensive than mineral oil but vegetable oil are renewable raw materials that possess certain excellent frictional properties e.g. good lubricity, low volatility, high viscosity index, solvency for lubricant additives, and easy miscibility with other fluids, etc. Some uses of vegetable oil in the lubricant application are as synthetic additive, transmission fluid, two-stroke engine oil, hydraulic fluid and grease. The consumption of vegetable oil for lubricant are 8 million kilograms per year. The large markets are engine oil, gear oil, hydraulic fluid and industrial fluid.
Keyword: design process, jatropha curcas, hydroxylation of epoxy, acetic acid anhydride

Judul: Data inventory of postharvest and extraction of Jatropha curcas Oil
Abstrak: Decreasing stock of petroleum and the global warming it causes has led to the development of production technology of plant oil, such as Jatropha curcas Linn. In Indonesia, it also is supported by national policy of plant oil as biodiesel. J. curcas is suitable for Indonesia since it can grow well in dry and marginal lands. Plant oil production causes concerns that it consumes large amount of conventional fuels, fertilizers, and pesticides, so that it will harm the ecosystem. Life cycle assessment can be used to quantify how beneficial the oil production is in terms of energy use and emission released to environment. The purpose of this research is to develop a data inventory of postharvest and extraction of Jatropha curcas oil, and a program for simulation of the process. In this analysis, some simulations were done in transportation and oil extraction phases. Emissions of process were calculated from its energy consumption. Then, environmental impacts were calculated from the emissions. Results showed the process releasing least emission per litre CJCO was process where fruits were peeled on farms and seeds were grinded before extraction.
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Judul: Karakteristik Suara Song Burung Kenari (Serinus canaria) Postur Besar dan Kecil.
Abstrak: Burung kenari (Serinus canaria) memiliki nyanyian yang sangat bervariasi dengan durasi yang panjang dan merupakan tipe burung bernyanyi open learners. Penelitian ini bertujuan menganalisis karakteristik suara song burung kenari (Serinus canaria). Penelitian dilakukan pada bulan April sampai Juni 2017 di Bogor, Jawa Barat. Perekaman suara song terhadap 12 ekor burung kenari jantan dilakukan dengan menggunakan mikrofon Sennheiser ME66 dan alat perekam Sony PCM-D50. Burung kenari yang digunakan merupakan burung yang pernah mengikuti kontes burung kicau dan memiliki predikat juara kontes burung. Amplitudo, durasi suara, frekuensi, dan volume suara burung dianalisis dengan menggunakan software Raven Pro 1.4. Data tersebut selanjutnya dianalisis deskriptif. Hasil analisis suara menunjukkan bahwa burung kenari memiliki banyak syllable, suara song rapat dan tidak terputus-putus, tempo yang cepat, dan adanya pengulangan suku kata pada setiap suara song. Burung kenari postur kecil memiliki rataan durasi lebih panjang dibandingkan dengan kenari postur besar, tetapi burung kenari besar memiliki rataan max amplitudo, average power, max power, min amplitudo, peak amplitudo, dan peak frekuensi.
Keyword: karakteristik suara (song), kenari, syllable