Judul: Dinamika struktur agraria dan perubahan produksi pertanian (kasus unit pemukiman transmigrasi Simpang Nuki, kecamatan Cirebon, kabupaten Barito Kuala, provinsi Kalimantan Selatan)
Abstrak: Palm oil is a high priority commodity in Indonesia. Development of oil palm plantations in Indonesia became a progam of local government who has a wide area such as Barito Kuala District, South of Kalimantan. Changes in communities agricultural production into oil palm plantations will affect the mode of production and agrarian structure. This research has it purpose to determine the process of agricultural community production change into palm oil and the dinamic of agrarian structures that occur as the process of change in agricultural production. This research also aims to identify the factors that influence changes in agricultural production. The research was conducted in Simpang Nungki Transmigrasion Settlement Unit, Cerbon District, Barito Kuala Regency, South of Kalimantan by qualitative and quantitative approaches. Changes in agricultural community production into oil palm are affected by external and internal communities factors. External factors consist of government policies that support the development of oil palm plantations. While internal factors are the level of public knowledge and level of ownership capital for construction and maintenance the garden.The inclusion process of new capitalist commodities are linked to the dinamics agrarian structure of community. Agrarian structure wich consist of ownership, tenure, and land use has it changes in commodity and production system community. Government, private, and community are expected to cooperate in finding the best solution to the problems which rised in the process of change.
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Judul: A Study of Oil Palm Plantation in Sukabumi Regency: Land Suitability and Socio-Economic Approach
Abstrak: The increase of the world oil palm demand, encourage Indonesia to develop oilm palm industry both of expansion and conversion. Commodity crop conversion can be interpreted as a change in the cropping system from one crop commodity to another. As happened in Sukabumi Regency, West Java, commodity crops have been converted from rubber and tea to oil palm on state-owned plantation land. This research analyzes land suitability and consistency, social conditions, and the standard of living of oil palm plantation workers in the Sukabumi Regency. The data used in this study are primary data and secondary data. The method used is the visual interpretation of satellite imagery, overlay, table matching using ArcGIS, and different tests using SPSS software from the results of interviews with respondents using a questionnaire. The results show that the percentage of land area converted to commodity crops from rubber and tea to oil palm continued to be massive from 2002 to 2020. The conversion was made because the selling price of the previous commodity continued to fall. The land suitability level of state-owned oil palm plantations in Sukabumi Regency is dominated by category S3. 95% of oil palm plantations in Sukabumi Regency are following the 2011-2032 Sukabumi Regency spatial planning. The conversion of commodity crops from rubber and tea to palm oil has a positive impact on improving the social conditions and the standard of living of oil palm plantation workers. The eight recommendations are prepared based on an analysis of land suitability and consistency of land use with spatial plans. Other recommendations given are based on the social conditions and standard of living of plantation workers. It is hoped that this will form an independent local workers' association to increase the gaining power to demand justice, rights and proper welfare for workers and their families. In addition, the existence of associations can also mutually control the performance of workers in carrying out their obligations.
Keyword: Commodity crop conversion, land suitability, land consistency, social conditions, standard of living

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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