Judul: Potency of Ruminant Forage in Karacak Village, Leuwiliang, Bogor.
Abstrak: The increasing of human population may cause the raising of food demand especially animal protein. Ruminants are potential livestock to be developed, because it could contribute mostly of meet supply. Therefore, it is required a priority zone to be developed as animal fanning area, in Indonesia. where the animal farm distribution is not spread evenly. The first step of animal zone is acquainted with each potential area that determined a number of animals which still can be developed in an area. This research was aimed to estimate potency forage by Nell and Rollinson method, and SWOT analysis to provide the advantage in fonn of information to plan the area and arrange development direction policy. Data were collected from two sources, they were (I) primary data from direct interview with the farmers, officials, and associate institution with structured questionair contribution, (2) secondary data from Villages Profile, Sub District Profile, Agricultural and Bogor Animal Farm Agency and associate institution supported this research. Where as the analysis and data were processed by using Nell and Rollinson method., botanical analysis, and SWOT analysis. The result of Nell and Rollinson method showed that Karacak village had 597,748 ton/year for forage potential, thus it still retained animal for 134 Animal Unit Area development strategy for animal farm in Karacak village was be set up on on the basic of SWOT analysis, such diversification in which had some treats, but internally still had strength. Key word : Forage, SWOT, Karacak village
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Judul: Analisis Potensi dan Pemanfaatan Hijauan Pakan pada Peternakan Domba Rakyat Desa Randobawa Ilir Kecamatan Mandirancan, Kabupaten Kuningan, Jawa Barat
Abstrak: Randobawa ilir is one of the villages in Kuningan Regency where found sheep breeding farm. The aim of this experiment was analyzing potential and utilitazion of forage on sheep breeding farm in Randobawa Ilir village as a feed of ruminant forage. This experiment used descriptive analysis, composition botany analysis, analysis of carrying capacity, and diversity analysis. The results of composition of botany showed that the first rank of forage was Eragrostis sp. as many as 14.01%, the second was Digitaria sp. as many as 9.96%, and the third was Mikania micrantha H.B.K. as many as 9.90%. The result of analysis of carrying capacity showed that Randobawa Ilir village still allowed for addition of livestock as many as 129.39 AU. The result of diversity analysis showed that diversity on paddy field higher than farm. The highest importance value on paddy field was Cynodon dactylon L. Pers. as many as 31.53% and the highest importance value on farm was Oplismenus burmannii (Retz.) P. Beauv as many as 68.64%.
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Judul: Pembuatan Film Tipis Cu2ZnSnS4 sebagai Lapisan Penyerap Cahaya pada Sel Surya Menggunakan Metode Elektrodeposisi
Abstrak: Thin film of Cu2ZnSnS4 (CZTS) is an alternative semiconductor used as light absorber layer on solar cell. CZTS can replace silicon that commonly used as commercial semiconductor. The advantage of using CZTS as absorber layer is due to the abundance of its chemical composer on earth, and its high value of absorption coefficient. The absorber layer was made by using electrodeposition method on ITO glass substrates. The films were deposited at room temperature using potentiostatic mode with a potential of –1.05 V for 30, 45, and 60 minutes. After that, the films were annealed at two different temperatures, 180 ºC and 500 °C, for 45 minutes in N2/H2S atmosphere. Based on X-ray diffraction analysis, the polycrystalline thin film obtained fall into kesterite crystal phase. This type of crystal was obtained when the CZTS was annealed at 500 °C in H2S/N2 atmosphere. The value of optical band gap energy for the CZTS thin film was 2.2 eV with the film thickness about 1.228–6.366 μm. The sample of CZTS with electrodeposition time of 45 minutes and annealing temperature of 500 °C showed the best result and in conformity with absorber layers criteria for solar cells.
Keyword: semiconductor, ITO glass, CZTS thin film, electrodeposition