Judul: Analisis Risiko Portofolio Produksi Hortikultura Di Puncak Berry Farm Agrowisata Cipanas, Kabupaten Cianjur, Jawa Barat
Abstrak: Puncak Berry Farm merupakan perusahaan yang bergerak di bidang agribisnis sekaligus agrowisata. Usaha yang dijalankan oleh Puncak Berry Farm menghadapi permasalahan produksi yang menyebabkan produktivitas stroberi dan sayuran yang diusahakan mengalami fluktuasi yang mengindikasikan adanya risiko dalam usahanya. Tujuan penelitian ini adalah menganalisis risiko produksi dalam pengelolaan stroberi dan sayuran pada kegiatan spesialisasi dan portofolio (diversifikasi) yang dilakukan Puncak Berry Farm dan menyusun alternatif strategi diversifikasi dengan menyajikan kombinasi komoditas yang tepat untuk mengurangi besarnya risiko pada kegiatan diversifikasi yang dilakukan Puncak Berry Farm. Hasil analisis risiko pada kegiatan spesialisasi diperoleh risiko yang paling tinggi terdapat pada stroberi sedangkan yang paling rendah terdapat pada pakcoy. Sedangkan, hasil analisis risiko diversifikasi menghasilkan kombinasi stoberi dan brokoli merupakan diversifikasi yang paling tinggi risikonya, sedangkan risiko yang paling rendah adalah stroberi dengan daun bawang.
Keyword: stroberi, sayuran, risiko, spesialisasi, diversifikasi

Judul: Optimalisasi Produksi Stroberi dan Sayuran Pada Puncak Berry Farm Agrowisata Cipanas, Kabupaten Cianjur, Provinsi Jawa Barat
Abstrak: Puncak Berry Farm is an agribussiness company in west java that developed the business of strowberries and vegetables cultivating for the needs of its agrotourims. The study aimed to analyze the combination of productions that bring in the optimal return. The analysis method that used in this study is Linnear Programming (LP) which from the models of goals and abstacles function. The result shows that the residual value of polybag that used for production, in the actual condition the value greater that zero, while the residual value on the optimal condition is zero. In the other side, the resource on the optimal condition shows the excess, it seen from the slack or surplus value that greater that zero.
Keyword: Bogor Agricultural University (IPB), vegetable, stroberries, production optimalization, agrotourims

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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