Judul: Penentuan Waktu Standar dan Biaya Produksi Minyak Nyamplung (Studi Kasus di Koperasi Jarak Lestari, Cilacap)
Abstrak: Crude calophyllum oil is one of the raw materials for producing biodiesel that is aimed to replace diesel fuel thats supply has decrease. One of the aspect that must be concern in developing alternative energy is increasing productivity and supressing production cost. The aim of this study to determine standard time of production and production cost of crude calophyllum oil based on the standard time. The standard time that is needed to produce 1 liter of crude calophyllum oil is 179.06 minutes with a production cost as much as Rp 11 917. The results of this study shows crude calophyllum oil that is further processed to biodiesel not yet replace diesel fuel because of higher production cost. Therefore, crude calophyllum oil until now only be used for research and cosmetics ingredients.
Keyword: Bogor Agricultural University (IPB), biodiesel, production cost, standard time, crude calophyllum oil

Judul: Study Production Process of Biodiesel from Alexandrian Laurel Seed Oil (Calophyllum inophyllum L.).
Abstrak: National fossil fuel consumption is increasing. In 2004, solar consumption rise to 26,9 billion liters, at 2010 is predicted to rise to 34,71 billion liters. The consumption of fossil inbalance with its production, this performance need to overcome by looking for an alternative energy resources. Palm oil, jatropha and calophyllum were some of agriculture abundant available in Indonesia. The jatropha used was constrained by a low oil production, average oil production is 1.892 liters/ha/year. Whereas palm oil is 5.950 liters/ha/year, however it compete with food needs and other oleochemical product. The use of calophyllum give an advantage as its production of 100 kg (220 lb) nuts/tree/year or 4.585 kg oil/ha/year. Although the oil has a high acid value and takes longer time that is 7 or 8 years before fruit production. The research was done by combining the process that is esterification, transesterification and netralization to produce oil to meet the SNI standard (number 04-7182-2006). The purpose of this research was to determine the molar ratio of methanol in esterification, and esterification time to obtain oil with low acid value. The esterification conditions than combine with transesterification and netralization in order to produce biodiesel that meet the standard requirement. The best oil produced from esterification was obtained by applying molar ratio methanol of 20:1 in 60 minute, the acid value of oil was 2,97 mg KOH/g feed. The best process combination to produce biodiesel obtained by esterificationnetralization- transesterification (E1NT) applying molar ratio methanol of 20:1 in 60 minute. Its gave acid value 0,71 mg KOH/g feed, kinematic viskosity 2,59 cSt, density 0,89 g/ml, water content 0,05% and yield 47,76%.
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Judul: Pelabelan Super Vertex Magic
Abstrak: Super vertex magic labeling is labeling on graph with is a set of edges mapped into and is a set of vertices mapped into . It has a vertex magic labeling in which and represents the size and order of the graph respectively. This manuscript proves that paths, cyclics, and disjoint union of cyclics have a super vertex magic labeling. There are four theorems to be discussed. The first theorem proves that path is super vertex magic if and only if is odd and . The second theorem proves that cyclic is super vertex magic if and only if is odd. The third theorem proves that bijection function from an edge set onto of graph can be extended to a super vertex magic labeling if and only if the set amount of edge label that incidents with a vertex in the graph, consists of sequential integers as many as vertices in the graph. The fourth theorem proves that disjoint union of the cyclics consists of cyclics with each cyclic has vertices is super vertex magic if and only if and are odd.
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