Judul: Analisis Produksi dan Pendapatan Usahatani Padi Sistem Subak (Kasus: Usahatani Padi Beras Merah Desa Jatiluwih, Kecamatan Penebel, Tabanan, Bali)
Abstrak: The increasing of rice consumption level in Indonesia with high population growth indicates the need for effort to increase the productivity of rice farm. Tabanan as the district that produced the most rice in Bali is mentioned by BPS (2012). Tabanan has 40 859 ha rice farm area with a total production of 210 762 ton of rice and productivity of 5.16 ton/ha. The purpose of this research are to analyze the characteristics and the factors that affecting the rice production rice farm at Jatiluwih, to analyze the income of rice farming at Jatiluwih. Production function analysis use Cobb Douglas production function model and the analysis of rice farm income earned by finding the gap between total revenue and total expenditure. Factors that affecting rice production in Jatiluwih are seed, fertilizer, urea, KCl, liquid pesticides, and labor. R/C ratio of the direct cost is 2.95 and R/C ratio of total cost is 2.43, which indicates that the revenue which is received by the farmer can cover the entire cost of farming
Keyword: Subak, rice, revenue, analysis of production

Judul: Analisis Pendapatan Usahatani dan Faktor-Faktor yang Mempengaruhi Produksi Padi Hibrida dan Inbrida (Studi Kasus Desa Suru, Kecamatan Doko, Kabupaten Blitar, dan Desa Clumprit, Kecamatan Pagelaran, Kabupaten Malang, Jawa Timur)
Abstrak: Food is a one of based necessary that must be completed by human. One of food that being a main necessary for Indonesia people is rice. In a row of total society improvement, necessary of rice will grow every years. Rice demand in Indonesia can not be completed all by a rice production in Indonesia. This problem make a goverment take a policy by making rice import in short term and innovation utilize of hybrid seeds for improving a rice production in long term. Blitar and Malang district were areas which have a wide land of hybrid rice at East Java. Suru Village - Doko sub district and Clumprit village - Pagelaran sub district were have hybrid rice land. First purpose of this research was to analyze the characteristic of hybrid and non-hybrid rice for agricultural business which use by farmers at Suru Village and Clumprit Village with descriptive analysis. Second purpose of this research was to analyze income rate of farmers which use hybrid and non-hybrid rice at Suru Village and Clumprit Village by using π = TR-TCdan R/C ratio method. Based on this research the farmers of hybrid rice get a higher income rather than farmers of non-hybrid rice. The business of hybrid and non-hybrid rice agriculture were suitable to do because R/C ratio of agricultural business based on total cost and cash cost were higher than one. Third purpose of this research was to know about factors that influenced hybrid and non-hybrid of rice production at Suru Village and Clumprit Village by using a linear regression. Based on result, factors that influenced rice production were seeds, organic fertilizer, solid pesticide, labour, and production difference between hybrid rice and non-hybrid rice.
Keyword: rice income, production, non-hybrid rice, hybrid rice

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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