Judul: A study suitability of coastal area for aquaculture in sausu sub-district parigi moutong distric, Sulawesi Tengah Province
Abstrak: In this time management of aquaculture on this area does not be done in an optimal condition, because generally aquaculture system are still in traditional way which is ~ntical with limitation in capital, technological and market. The objectives of the ~y are to identify the suitability of coastal area for aquaculture development, to d§!;ermine aassimilative capacity of coastal waters and to determine optimum area for a~aculture in coastal area. Based on the GIS analysis, the area, which is suitable for a.guaculture, accounted for about 5,311 ha, and moderate suitable area is about 10,871 hr. Carrying capacity of coastal waters for accommodating wastes from aquaculture agtivities is about 556,622,583 m3 . The maximum area for intensive shrimp farming is ajProximately 566 ha, 1,132 ha for semi-intensive system and 2,264 ha for traditional s)'Oitem. Existing condition of aquaculture in Sausu Sub-District is 1,675 ha. Thus, area oI1D aquaculture in Sausu exceeded three times carrying capacity level, if all of area is iiiend for intensive aquaculture system. Therefore, if the system of shrimp farming c~ducted semi intensive or traditional, the total area is double or four times bigger than iiensive system. If local government wants to enhance development of aquaculture on tl1is area, carrying capacity of environment and aquaculture system should be consider t&reach out sustainability of aquaculture development and coastal environment.
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Judul: An Analysis of Resource Optimization in the Development of Aquaculture in Levun Bay Area, Southeast Maluku Regency.
Abstrak: This study aimed to analyze the suitability of Levun Bay area, for mariculture to determine the optimal resources used, to analyze business feasibility, and to analyze the policy of the priority in developing aquaculture commodity. The research result showed that suitability classification of the bay area for grouper fish culture belonged to a suitable class with a value of 57.1, and the seaweed culture was considered as a very suitable class with a value of 67.2. Based on supporting capacity consideration, the optimum area of cultivation for grouper fish was 150.42 ha and for seaweed was 254.00 ha. The business feasibility analysis of kerapu fish and seaweed cultivation revealed that both businesses are feasible to be developed because the NPV, Net B/C and IRR met the feasibility criteria. The policy analysis of commodity development priority based on the result of AHP indicate that the seaweed aquaculture value of 0.598 and the grouper aquaculture of 0.402, therefore seaweed aquaculture should be given priority to be developed.
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Judul: Prenilasi Senyawa β-Diketon sebagai Prekursor 3-Prenilflavon
Abstrak: One group of flavonoids that has not been commonly synthesized is 3- prenylflavone. The main objective of this experiment was to synthesize precursor of 3-prenylflavone. Firstly, β-diketone was synthesized via 4 steps from phenol as starting compound with total yield of 24%. Prenylation of β-diketone with prenyl bromide and K2CO3 base produced 4 fractions which were separated by using preparative thin layer chromatography (PTLC) with n-hexane:EtOAc (8:2) as the eluent. Fraction with Rf = 0.80 was further separated by using preparative PTLC with n-hexane:EtOAc (99:1) as the eluent. Two fractions were obtained with Rf = 0.38 and 0.42. The first fraction has been characterized as diprenylated β-diketone with 49% yield. Application of protecting group on the phenolic OH group in β- diketone are needed to obtain monoprenylated β-diketone which can be further cyclized into 3-prenylflavone
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