Judul: Analisis Risiko Produksi Buncis Perancis di Firma Raja Buncis Desa Tajur Halang Kecamatan Tajur Halang Kabupaten Bogor
Abstrak: French bean is a vegetable comodition that people seek to supply market demand with high quality standard. The objective of this research is to identify the risk sources, the risk probability, the risk impact and handling strategy alternative that can be done to handle the risk production of French bean cultivation in Raja Buncis Firm. Results of risk sources identification are the risk sources of pests, disease and labor skill. The risk source of disease showed the highest point of probability which is 44.8%, as of the use of the z-score method. The biggest risk impact also caused by disease which is Rp. 5.283.132,388, as of the use of value at risk method or VaR. Every risk sources needs attention; most attention are given to the risk source of pests. The alternative of handling strategy for the risk source of pests and labor skill is preventive handling strategy while for the risk source of disease mitigation handling strategy prefrerred
Keyword: Bogor Agricultural University (IPB), z-score, value at risk, production risk, french bean

Judul: Analisis pendapatan dan efisiensi teknis usahatani buncis Perancis dengan pendekatan stochastic production frontier
Abstrak: Adanya berbagai kendala, seperti penggunaan input yang belum optimal karena kurangnya pengetahuan merupakan permasalahan yang ada di daerah penelitian, sehubungan dengan itu maka penelitian ini mencoba untuk menjawab masalah-masalah berikut Bagaimana keragaan dan tingkat pendapatan usahatani buncis perancis di lokasi penelitian, faktor-faktor apa saja yang mempengaruhi produksi usahatani buncis perancis dan apakah proses produksi usahatani buncis perancis di daerah penelitian telah dilakukan secara efisien dilihat dari sisi teknis produksinya. Hasil penelitian ini diharapkan dapat berguna bagi petani dan bagi pengambil kebijakan sebagai bahan pertimbangan tentang pengembangan dan penyusunan kebijakan usahatani buncis perancis dan akhirnya menarik minat investor atau pengusaha untuk berpartisipasi dalam meningkatkan ekspor non-migas terutama sayuran. Penelitian ini juga diharapkan memberikan tambahan informasi dan bahan pertimbangan untuk penelitian selanjutnya Penelitian dilakukan di Desa Sutopati, Kecamatan Kajoran, Kabupaten Magelang Kegiatan pengumpulan data dilakukan pada bulan April-Mei 2003 Data yang digunakan dalam penelitian ini adalah data primer, data sekunder dan wawancara serta pengamatan secara langsung. Pengumpulan data dilakukan dengan metode sensus terhadap 31 populasi petani dengan musim tanam yang sama dan menanam buncis perancis secara monokultur
Keyword: technical efficiency, French bean farming, stochastic production frontier approach

Judul: Membran Komposit Kitosan-Zeolit untuk Aplikasi Direct Methanol Fuel Cell
Abstrak: Direct methanol fuel cell (DMFC) is a fuel cell that utilize methanol as the fuel source. The electrolyte membrane used in the DMFC system in this research was chitosan-zeolite composite membrane. The composite membrane was synthesized with chitosan-zeolite composition variation of 1:1, 1:2, 1:3, and 2:1. The membranes were analyzed by Fourier transform infrared spectrophotometer (FTIR) and scanning electron microscope, and for the specific gravity. Membrane performances were tested with methanol uptake, methanol permeability, conductivity, and potential difference in the DMFC system. The FTIR spectrum showed no formation of new functional groups inducating that the composite membrane was a result of physical mixing. Morphological analysis showed that the membrane was nonporous. Chitosan-zeolite 1:3 composite membrane had the highest specific gravity and methanol uptake, 1.4226 g/mL and 41.44%, respectively. The highest proton conductivity was showed by the 1:2 chitosanzeolite composite membrane, namely 7.2946× 10-7 S/cm. Based on this research results, chitosan-zeolite composite membrane can be applied in DMFC system.
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