Judul: Fruit maturity uniformity and extractable oil yield of jatropha (Jatropha curcas Linn)
Abstrak: Panen yang buruk telah menjadi faktor utama terbatasnya komersialisasi tanaman ini, dan hal ini telah dikemukakan dalam berbagai publikasi (ERIA 2010, Biswas et al. 2006 dan. Heller 1996). Buah jatropha yang matang secara heterogen menjadi suatu pekerjaan yang melelahkan dan memakan waktu karena pemanen buah jatropha harus memilih hanya buah-buahan yang telah matang dan tepat untuk diproses. Selanjutnya buah tersebut harus dipanen secara manual pada periode tertentu. Sivapragasam dan Puteh (2008) melaporkan bahwa jumlah buah jarak pagar yang dipanen hanya sekitar 100 g.minute-1 atau sekitar 6-kg.hr 1. Selanjutnya, mereka menyimpulkan bahwa 80% (delapan puluh persen) dari pengeluaran biaya untuk produksi bibit adalah untuk panen dan penanganan pascapanen. Teknik pemanenan secara mekanis untuk jenis tanaman ini tidak dimungkinkan karena sifat tanaman yang tidak teratur cara berbunga serta pertumbuhannya. Sampai sekarang, buah jatropha hasil perkebunan skala kecil maupun besar masih dipanen dengan tangan. Biji buah jatropha hasil tanaman yang ada perkebunan seluas 8.000.000 ha. (delapan juta hektar) di Myanmar dilaporkan membusuk karena teknologi panen yang buruk (Jim 2009).
Keyword: Jatropha curcas Linn, Crude jatropha oil

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: Pelabelan Super Edge Magic pada Graf Cycle dan Graf Wheel
Abstrak: This manuscript proves that cycle graph and wheel graph have a super edge magic labeling. Super edge magic labeling on a graph is labeling that has an edge magic labeling with a set of vertices were mapped in to {1,2,… ,𝑝} and a set of edges were mapped in to {𝑝+1,𝑝+2,… ,𝑝+𝑞}, in which 𝑝 is order and 𝑞 is size on the graph. There are one lemma and two theorems to be discussed. The lemma is used to prove the two theorems. The first theorem proves that cycle graph 𝐶𝑛 is super edge magic if and only if 𝑛 is odd. The second theorem proves that wheel graph 𝑊𝑛 of order 𝑛 is not super edge magic. Moreover 𝑊𝑛 is not edge magic if 𝑛≡0 mod
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