Judul: Feasibility Study of Mixed Community Forest Business (Case on Gunung Bunder 2 Village, Pamijahan District, Bogor Regency)
Abstrak: Desa Gunung Bunder 2 adalah salah satu desa di Kabupaten Bogor yang di dalamnya terdapat hutan rakyat. Tujuan dari penelitian ini adalah menganalisis kelayakan usaha hutan rakyat campuran dengan pola yang digunakan di daerah tersebut. Pola usaha hutan rakyat yang digunakan di Desa Gunung Bunder 2, diantaranya adalah hutan rakyat campuran yang ditanami dengan pohon meranti dan tanaman singkong. Analisis yang digunakan dalam penelitian ini adalah Discounted Cash Flow dengan periode 10 tahun. Berdasarkan hasil analisis finansial diperoleh nilai Net Present Value (NPV) sebesar Rp16 693 268, Benefit Cost Ratio (BCR) sebesar 2.194, dan Internal Rate of Return (IRR) sebesar 68.613%, maka usaha hutan rakyat campuran di Desa Gunung Bunder 2 layak dilakukan., Gunung Bunder 2 is one of villages in Bogor Regency in which community forest are located. The aim of this study is to analyze the feasibility of mixed community forest using the scheme applied in the location. The scheme of community forest bussiness applied in Gunung Bunder 2 Village includes mixed community forest which is planted with meranti and cassava. Analysis method used in this study is Discounted Cash Flow method with 10 years period. Based on financial analysis, Net Present Value (NPV) generated is Rp 16 693 268, Benefit Cost Ratio (BCR) 2.194, and Internal Rate of Return (IRR) 68.613%, thefore the mixed community forest in Gunung Bunder 2 is feasible to be conducted.
Keyword: Analisis Kelayakan, Discounted Cash Flow, Hutan Rakyat Campuran, Feasibility Study, Discounted Cash Flow, Mixed Community Forest

Judul: Pendugaan Biomassa dan Serapan CO₂ Bagian Atas Tegakan Hutan Rakyat di Desa Gunung Bunder 2 Kecamatan Pamijahan Kabupaten Bogor
Abstrak: Hutan rakyat merupakan hutan yang dimiliki oleh masyarakat yang dinyatakan oleh kepemilikan lahan yang memiliki luas minimum sesuai Permenhut 88/2003 sebesar 0.25 ha serta penutupan tajuk dan tanaman lainnya lebih dari 50%. Kelestarian hutan rakyat ditentukan oleh struktur tegakan hutan. Penelitian ini bertujuan untuk mengetahui besarnya biomassa, cadangan karbon dan serapan CO2 per pemilik lahan hutan rakyat di desa Gunung Bunder 2 serta mengetahui perbedaan hasil pendugaan perhitungan biomassa dengan metode allometrik dan metode konversi volume menggunakan BEF. Pendugaan potensi biomassa menggunakan metode allometrik dan metode dengan BEF menghasilkan nilai dugaan berbeda nyata. Hasil rata-rata nilai dugaan biomassa dengan menggunakan metode allometrik dan metode BEF secara berturut-turut adalah 6.76 ton/ha dan 8.28 ton/ha. Dugaan cadangan karbon dan serapan CO2 dengan metode allometrik menghasilkan rata-rata nilai sebesar 3.18 ton/ha dan 11.67 ton/ha, sedangkan metode dengan menggunakan BEF sebesar 3.89 ton/ha dan 14.28 ton/ha., People's forest is a forest owned by the community declared by land ownership that has a minimum area according to Permenhut 88/2003 of 0.25 ha and the closure of timbers and other plants more than 50%. The preservation of people's forests is soothed by the structure of the forest stand. This study aims to find out the amount of biomass, carbon reserves and CO2 uptake per owner of people's forest land in the village of Gunung Bunder 2 and find out the difference in the results of the utilization of biomass calculations with allometric methods by using BEF. The restoration of biomass potential using allometric methods and methods with BEF produces real different conjecture values. The average yield of the alleged value of biomass using allometric methods and methods with BEF is 6.71 tons /ha and 8.28 tons/ha, of allf. Alleged carbon reserves and CO2 uptake by allometric methods produce an average value of 3.18 tons / ha and 11.67 tons / ha, while the method using BEF of 3.89 tons / ha and 14.28 tons / ha.
Keyword: hutan rakyat, Biomassa, Cadangan Karbon, Serapan CO2

Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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