Judul: Charactheristics of Private Forest Management and Suitable Land Analyze for Private Forest Development in Bima District
Abstrak: This study aimed to analyze the characteristics of private forest management, the feasibility from business aspect, factor that influencing farmer preferences to entering private forest bussines, and land characteristics that motivating farmers to cultivate a perennials woody plant in Bima District. The study is a descriptive exploratory study using a combination of qualitative and quantitative approaches in answering the study goals. Qualitative approach used to describe the socioeconomic characteristics of farmer households and the practices of private forest management. Quantitative approach is used to answering the feasibility of private forest business, explaining the factors that influence farmers decisions to entering private forest business, and identify the distribution of suitable lands for private forest. Discounted Cash Flow Analysis (DCF), Logistic Regression, and Multi Criteria Analysis and Spatial Analysis are the analytical tools used in the quantitative approach. Private forests in Bima District is developed using monoculture model with Teak (Tectona grandis) as main crops. It was managed traditionally and autonomous, not well planned and documented, and without applying any modern technology to improve soil quality in orders to increase plants productivity. The private forest locates in stepish area, with high to moderate level of accesibility due to close to the settlements and water resources. From the business aspect, private forests in Bima District were profitable, feasible to develop, and has a high level of resilience to the effects of inflation. Ages, education, area of dry lands, policy, ecological and social motivation were the variables that affected farmer preferences to entered private forest bussines. Based on farmer preferences, there were areas amounting to 169 055 hectares identified as available and suitable land for private forest development in Bima District. The suitable lands were scattered in 18 sub-districts, where Soromandi sub-district having the highest distribution areas.
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Judul: Perceptions of Farmer on the Private Forest Business  and the Contributions to Household Income: Case Study Private Forest in  Tegaldlimo Sub District, Banyuwangi Regency, Jawa Timur Province
Abstrak: Hutan rakyat adalah salah satu sumber daya alam memiliki potensi untuk berperan penting dalam pembangunan sektoral di suatu daerah. Usaha hutan rakyat terdiri dari empat sub sistem, yaitu sub sistem produksi, sub sistem pengolahan, sub sistem pemasaran, serta sub sistem kelembagaan. Perubahan pada satu sub sistem akan mempengaruhi sub sistem yang lain. Penelitian ini bertujuan untuk mengidentifikasi karakteristik petani hutan rakyat di Kecamatan Tegaldlimo, menganalisis persepsi petani terhadap usaha hutan rakyat, dan menganalisis kontribusi usaha hutan rakyat terhadap pendapatan rumah tangga. Metode yang digunakan adalah analisis deskriptif dengan menggunakan data kualitatif dan kuantitatif. Sampel yang dipilih sebanyak 32 responden menggunakan metode convenience sampling. Karakteristik petani hutan rakyat di Kecamatan Tegaldlimo didominasi dengan umur yang produktif, memiliki pendidikan yang tergolong sedang, pekerjaan utama didominasi oleh petani, sebagian besar petani tidak memiliki pekerjaan sampingan, memiliki jumlah tanggungan keluarga yang tergolong kecil, pengalaman lama bertani dalam kategori baru, sebagian besar petani memiliki lahan garapan hutan rakyat yang tidak luas, sebagian besar petani menerapkan pola agroforestri. Persepsi petani terhadap sub sistem produksi (62,50%), sub sistem pengolahan (78,13%), sub sistem pemasaran (56,25%), sub sistem kelembagaan (53,13%). Kontribusi pendapatan petani hutan rakyat terhadap pendapatan rumah tangga rata-rata sebesar 1,28%. Sebagian besar petani (90,63%) sudah memiliki pendapatan yang layak berdasarkan UMK Banyuwangi 2022.
Keyword: private forest, private forest business, sub system, perseption, income contribution

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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