Judul: Potential development of beef cattle and its strategies in the regency of  Lima Puluh Kota, West Sumatra
Abstrak: Populasi ternak sapi potong di Sumatera Barat menurun dalam lima tahun terakhir (2001-2006), dengan rata-rata penurunan sebesar 0,31 persen per tahun, sementara jumlah pemotongan meningkat rata-rata sebesar 9,35 persen per tahun (BPS Sumatera Barat 2007). Hal ini disebabkan rendahnya produksi dan produktivitas ternak sapi potong. Beberapa karakteristik produksi yang belum optimal antara lain rendahnya tingkat kelahiran (< 50%), tingginya angka kematian (> 2%), rendahnya pertambahan bobot badan (0,4-0,5 kg/ekor/hr), tingginya angka pemotongan ternak betina produktif (28%) (Dinas Peterbakan TK I Sumatera Barat, 2007a). Untuk memperbaiki keadaan tersebut diperlukan kontribusi dari berbagai pihak termasuk bantuan pemerintah untuk berupaya mengembangkan sapi potong antara lain melalui program peningkatan produksi dan produktivitas ternak sapi potong, penurunan angka kematian, dan mengendalikan pemotongan ternak betina produktif (Soetirto, 1997).
Keyword: livestock farming, livestock waste, land resources, beef production, West Sumatera

Judul: Potensi Pengembangan Sapi Potong di Kabupaten Sijunjung Propinsi Sumatera Barat
Abstrak: Agricultural land in Sijunjung District that has not been optimally utilized could be used for the development of beef cattle farm. The development should conform land suitability as a reference to determine beef cattle development to achieve the government's target of meat self-sufficiency in 2010. This study aims to foresee the potential of land in Sijunjung District for development of beef cattle using a combined 2006 Landsat images, LREP maps and other supporting data through, financial analysis, and the desired rearing cattle the local community. The results indicate that the potential lands for the development were about 120,063 ha or 38.35% of the existing land area, which consists of mixed garden (100,359 ha), 3,247 ha of abandoned land, 11,027 ha of paddy fields and 5,428 ha of bush. Actualy, land carrying capacity is 55,518 Animal Unit, and the potential carrying capacity is 134,722 Animal Unit. The results of the NPV analysis for all farming schemes were positive, with B/C Ratio> 1, and the IRR> outweighed the applicable interest rate. Assessment using AHP showed that the caging system was preferable (0.650) than shepherd-based farming (0.350) with a value of inconsistency about 0.05.
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Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4