Judul: Analisis Finansial Pengelolaaan Hutan Rakyat Sertifikasi di Kecamatan Sambirejo, Kabupaten Sragen
Abstrak: Certification community forest is managed forests by communities with sustainable management system and approved by international ecolabel. Forest certification have implemented in different community forests, District Sambirejo, Sragen in 2009. The purpose of this study is comparing financially Jati business management of forest certification between community forest farmer who get the assist from local government budget and private effort community forest, as well as to identify farmer’s perceptions toward the influence of forest certification. Local government budget community forest management and private effort community forest either 10 or 20 year cycle are equally viable because it has a value of NPV > 0, BCR values > 1 and IRR > interest rates. Local government budget community forest management of 20 years cycle is considered the most profitable than others who have a NPV value of Rp. 97 546 135 million. Farmers feel the absence of changes specifically from the forest certification if in terms of economic aspect , but farmers feel the better environmental changes for forest people center after the forest certification.
Keyword: Bogor Agricultural University (IPB), certification and perception, community forest, financial analysis

Judul: Perbandingan Kelestarian Hutan Rakyat Bersertifikat dan Tidak Bersertifikat di Kabupaten Kulonprogo
Abstrak: Forest community certification is an instrument to achieve sustainability forest management in ecology, economy, and social aspects. The objective of this study was to obtain forest management data based on ecology, business feasibility, and organizational in groups that have been certified and uncertified. The research was conducted in two locations of Kulonprogo Regency, that were Kaliagung Village, District of Sentolo that represent of uncertified forest community management unit (Marsudi Boga) and Banjararum Village, District of Kalibawang which represent of certified forest community management unit Koperasi Wana Lestari Menoreh (KWLM). The average income contribution of certified forest community (KWLM) was Rp 25 961 264/ha/year and uncertified forest community (Marsudi Boga) was Rp 6 688 540/ha/year. Carbon stock potential of certified community forests (KWLM) was 27.035 tones C/ha and uncertified forest community (Marsudi Boga) was 22.375 tones C/ha. Hence certified forest community provided better benefits in the form of higher carbon stock and average income.
Keyword: Bogor Agricultural University (IPB), Certification, Community forest

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.
Keyword: