Judul: Kerugian Ekonomi PLTA Akibat Sedimentasi dan Peran Kelembagaan Dalam Pengelolaan Waduk Cirata - Jawa Barat
Abstrak: Cirata dam, a man made resource, included in the The Common Pool Resources (CPRs). Trend of CPRs are over use and produce externality. The impact of these externalities are the mass death of fish in pondfish, corrosive plant equipment, decreased production of hydroelectric power and the most important suistainability of dam. At least 3 sectors inside activity which contribute these sedimentation: fisheries, agriculture, and domestic activities. The objective of this study are to estimate which pollutant’s source that contribute to sedimentation by estimating the solid and liquid waste; estimating economic losses of hydropower and analyze appropriate institutional model as the CPRs dam management. Data analysis for estimating economic losses using benefit-cost analysis and for institutional analysis using Dolsak&Ostrom approach. The results showed that the main source of pollution comes from fisheries sector. The contribution from solid waste 742 ton/day and from domestic ativities 58 ton/day. The willingness to pay community for waste management program is Rp25.000/month for fisheries family and Rp6.175,00/month for non-fisheries family. Hydropower losses is Rp11 million comes from 8 years remain life time reservoir. Cost of enviromental improvement is Rp65 million. Institutional analysis showed that management of dam are low enforcement, high demand of dam product, no leading sector for collective action, and there is the political interest. The study emphazed the importance of institutional arrangement for dam suistainability management.
Keyword: 

Judul: Dampak Ekonomi Pencemaran Air Terhadap Perikanan Budidaya Sistem Keramba Jaring Apung (KJA) di Waduk Cirata, Kabupaten Bandung Barat
Abstrak: This research aims to analyze the economic impact of water pollution on aquaculture in Cirata Reservoir. Impact of water pollution in Cirata is declining fish productivity of floating cage aquaculture. Based on the data analysis there are 8 factors that could explain the presence of contamination in the last 5 years which has exceeded the threshold of category C (Pb, Zn, Cl2, H2S, DO, Cu, Cd, and Nitrite). Further multiple regression analysis of water quality impact on the productivity of floating cage. Showed that, only variable DO levels is statistically significant effect on productivity of floating cage. Value of economic loss is calculated based declining productivity amounting to Rp 985.485.382.718 in 2011. The results of the calculation of economic loss in the last 5 years amounting to Rp 4.219.702.954.280. There are five policys identified which were restrictions on the amount of floating cage with progressive taxation, tax collection at each floating cage aquaculture for environmental improvement costs (Rp 10/kg crops), installation of waste filter, biological cleaners, and withdrawals floating cage which are not enviromental friendly (floating made of styrofoam) and unused. AHP analysis results that the first policy priority is the installation of waste filter policy.
Keyword: 

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.