Judul: Analisis Perbandingan Tingkat Pendapatan dan Faktor yang Mempengaruhi Pilihan Sistem Budidaya Ikan dalam Keramba Jaring Apung (Studi Kasus Waduk Jatiluhur Kabupaten Purwakarta)
Abstrak: Jatiluhur reservoir is a multi-purpose dam located in Citarum River basin, Purwakarta. This reservoir has a major contribution for fishery sector in West Java. Main fishing activites in Jatiluhur Reservoir is fish cultivation by using Keramba net cage (Keramba Jaring Apung) techniques. Farmers mostly grow golden fish and tilapia fish. Both fishes are the major commodities in Jatiluhur Reservoir. Farmers apply two kinds of cultivation systems monoculture (only golden fish) and polyculture (golden fish and tilapia). The main goal of this research is to estimate the rate of farmers’ income, both for monoculture and polyculture farming, in Jatiluhur Reservoir. The result showed that income earned by polyculture farmers is more favorable than monoculture farmers. The difference among the two systems was statistically significantly meaning that statistically the level of income of the farmers who applied polyculture system was significantly different from those who applied monoculture systems. The second goal is to identify the factors that influence the farmers’ decision in the selection of the pattern between monoculture and polyculture systems in Jatiluhur Reservoir with logistic regression analysis. Based on the result obtained, the factors that influence farmers’ decisions at 15 percent significant level are the level of education, length of experience cultivation, farmers’ income and number of dependents, while the acreage of KJA has no effect on the farmers’ decision.
Keyword: determinants of the selection of fish farming pattern, polyculture of golden fish and tilapia, golden fish monoculture, comparison of income

Judul: Analisis Pendapatan dan Efisiensi Produksi Usahatani Budidaya Pembesaran Ikan Mas dan Nila Pada Keramba Jaring Apung Ganda (Studi Kasus Waduk Cirata Desa Bobojong Kecamatan Mande Kabupaten Cianjur)
Abstrak: Cirata reservoir is one of three reservoirs in Citarum River that has major contribution to the fisheries in West Java. Fisheries in Cirata is conducted by fish rearing (Keramba cage) double KJA. Aquaculture of KJA performed by enlargement Cyprinus carpio and tilapia. This is because those commodities were major commodities in Cirata especially Cyprinus carpio. Enlargement of Cyprinus carpio and tilapia Aquaculture was cultivated widely in Bobojong village. The Objective of this research were to identify the structure of costs and farm income from KJA enlargement of Cyprinus carpio and tilapia aquaculturein Bobojong village by using π=TR-TC method, to analyze the factors that affect farm income from enlargement of Cyprinus carpio and tilapia aquaculture in Bobojong Village by using multiple linear regressi on analysis, to analyze the efficiency of production by using MR = MC and revenue efficiency y R/C method. Based on there gressi on results obtained, the factors that affect farmers' income significantly on the 5% through significance level were the number of Cyprinus carpio production, total production of tilapia, Cyprinus carpio seed costs, the price of tilapia seed, and the price of Cyprinus carpio feed education were not affected largely for the farm income. The results obtained on the third objectives howed that production off arming aquaculture on KJA fisheries was not optimal so that the production and production inputs used need to be optimized in order to get maximum profit. Enlargement of Cyprinus carpio aquaculture and tilapia in Bobojong Village was feasible to performed because the value of R/C off farm income from cash costs and total cost was greater than one.
Keyword: production, income, Cyprinus carpio and tilapia aquaculture, efficiency

Judul: Sintesis α-Fe2O3 menggunakan metode sol gel
Abstrak: In this reseach was succeeded make powder α-Fe2O3 with particle size 202.64 nm. Synthesis using Sol-Gel method with SiO2 coating derived from Si(OC2H5)4 at temperature of 750 oC for 5 hours. Characterization XRD prove that sample form is α-Fe2O3 (11 peaks) and β-Fe2O3 (2 peaks) with crystal size 20.69125 nm and crystallization 44 %. The cystal structure of α-Fe2O3 is rhombohedral and β-Fe2O3 is hexsagonal. Optic characterization show that the sample absorbing light at wavelength less than 480 nm. Bandgap energy of the optical characterization measurments is 2.74 eV.
Keyword: α-Fe2O3, annealing, bandgap energy, sol-gel, crystal structure.