Judul: Hubungan pertambahan bobot badan harian dengan perubahan ukuran linier tubuh pada bangsa domba dan jenis kelamin yang berbeda
Abstrak: One of many ways to increase sheep productivity is an intensive raising program (fattening program). The benefits of this program are: better sheep performance and better sheep condition. Other way, the weekness of this program: its hardness to find excelent performance of young sheep. To face the weakness, we have to do selection by using the daily weight gain and body measurements as the selection criterias.
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Judul: Karakteristik Ukuran Dan Bentuk Tubuh Domba Ekor Tipis Melalui Analisis Regresi Komponen Utama Di Up3j, Peternakan Tawakal Dan Mitra Tani
Abstrak: Sheep as a small ruminant is very popular among the farmers in Indonesia, because it is easy to take care of, can breed well and easily adaptable. The relationship between body weight and body measurements are neccessary needed to be studied. These body measurements can be used as a predictor of a live weight. Thirteen body measurements were taken on 198 Local sheep under the age of one year. As a result T2-Hotelling method indicated that the difference body measurements and gender group in each farm sheep (P <0.01). Principal Component Analysis (PCA) showed that a high shoulder size and shape that has the highest eigen vector (0.56 and 0.67) in the group of sheep UP3J. The chest circumference has the highest eigen vectors respectively (0.61 and 0.56) as a size in MT Farm and Tawakal Farm. The body lenght has the highest eigen vectors respectively (0.80 and 0.62) a shape in that farm. Based on observations of linear body size can also determine score and the score of the size of each individual were observed by principal component analysis approach that can distinguish the size and shape of the various groups of local sheep. Determination of linear body measurement variables that provide a beneficial effect on body weight can be obtained based on elasticity values derived. Principal component regression analysis results showed that body measurements in each groups of male and female sheep is the chest circumference.
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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