Judul: Development of traps for sustainable fishing at Sibolga
Abstrak: Rapid population growth in the world will has implication to the increasing demand for protein especially from fish. Traps is one of fishing gears to catch demersal or coral reef fish. Recently trap operation at coast of Western Sumatera has been restricted. The operation of trap is considered destructive for coral reef. The objectives of this research are to evaluate fishing operation technic of demersal fishing using basket traps, to measure technical performance of basket trap modification, to analysis potential fishing ground and catch of basket trap and to arrange development strategy of trap fisheries at coast of Western Sumatera. The research was conducted in coastal area of western Sumatera from March 2011 to February 2012. The methods applied in this research were experimental fishing and survey method. Analysis of data used descriptive analysis, the statictical analysis for significantly test, analysis hierarchy process and SWOT analysis. The result showed that the evaluation of fishing operation technic using basket trap need repair, especially from the way of landing and construction. There were 26 species found in four fishing grounds located around coast of western Sumatera. The 26 species were dominated by three families, for example Serranidae, Carangidae and Lutjanidae. Basket trap modification showed higher productivity compared to the fishers basket trap. The average catch of Sibolga fishermen was 57.66%, which was lower than the average catch of basket trap modification about 75.28%. Based on the factorial analysis, type of traps gave significantly influence to the catch of demersal fish. Analysis of hierarchy process showed that repairing technic operations of trap is the main priorities in improving the sustainable fishing at Sibolga. Development of capture fisheries activities must consider resources sustainability.
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Judul: Analysis of capture fisheries development in South Sumatera province
Abstrak: Marine and fisheries sectors in South Sumatera Province is one of the leading economic sector. The development is expected to improve the welfare of fishermen, to absorb labor and increase revenue and ensure its sustainability in the future. The purpose of this research is to develop design based fishery development of sustainable business in South Sumatera Province. The research method used is survey method with several data analysis tools such as surplus production method, scoring method, multi-criteria analysis, SWOT analysis and Analytical Hierarchy Process (AHP). Kinds and the potential yield commodities of fish in South Sumatera Province are shrimp (Penaeid) of 6297.98 tons; 1955.98 tonnes of blue swimmer crabs (Portunus spp); catfish (Arius thalassinus) amounted to 4488.06 tons and machete (Chirosentrus dorab) at 3718.69 tons. Type of fishing gears that still more likely to be increased are trammel nets, drift gill nets, fixed gill nets and encircling gillnets. The main priority of the alternative strategy of fisheries development policy in South Sumatera Province by improving the facilities and operational infrastructure to support the fishing effort. This is possible considering that the development of fisheries in South Sumatera has a substantial dependence on such facilities and infrastructure problems. Support of infrastructure facilities and good support, activities of both capture fisheries, processing and marketing can be more efficient and become an important point to increase the benefits of fishery products in South Sumatera Province.
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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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