Judul: Tataniaga Kentang di Desa Sangiang, Kecamatan Banjaran, Kabupaten Majalengka, Jawa Barat
Abstrak: Potato is one of advantage commodities in Indonesia which has economic value. The high disparity of potato’s price between the farmer’s and the consumer’s level also the low price of potato at the farmer’s level may cause low farmer’s share. This research was aimed to analyze the institution, function and marketing distribution; identify the market structure; and to analyze the operational efficiency by marketing margin, farmer’s share and ratio of benefits to cost approach. Observation and interview were done toward the farmers in Sangiang village by using purposive sampling method and for the other marketing institution by using snowball sampling. There were five channels in potato marketing system with different functions and market structure. The result showed that the potato marketing system in Sangiang Village was not efficient, whereas the farmers still role as a price taker. Therefore, the government’s and instructor’s role are very important in empowering the farmers and the farmer’s group to solve the problem faced in potato marketing system in Sangiang Village.
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Judul: Analisis Efisiesi Tataniaga Komoditas Manggis: Studi Kasus Di Desa Kacarak, Kecamatan Leuwiliang, Bogor
Abstrak: Mangosteen is a tropical fruit with high economic value. Its high potencial for trading require a good and efficient marketing. Bogor is placed in the second of the biggest mangosteen centers of West Java after Tasikmalaya. It has high potency in mangosteen production, especially in Karacak village, sub district of Leuwiliang. The weak of farmers' bargaining position made the selling price in farmer level become low. Unfair margin and share distribution made the bargaining position of the farmer became worsen. The high selling price both in the domestic and overseas supposed to increase the farmers profits, however the major benefit only gained by marketing institutions. Based on the research, the marketing of mangosteen in Karacak Village was inefficient.The market structure was formed into the structure that leads to imperfectly competitive markets. There were five marketing forms of mangosteen in Karacak village. Market conduct was shown by selling and purchasing practice with the deal between actors of marketing system, price formation from bargaining that tend to set into higher level by the marketing institutions. Based on the analysis of marketing margins, the farmer's share, and the ratio of benefits and costs shown that an efficient marketing mangosteen for export purposes can use the third marketing channels while domestic marketing can use the fifth channel.
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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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