Judul: Karakteristik kualitatif dan kuantitatif hasil persilangan ayam pelung dan arab
Abstrak: The research was conducted to get information about qualitative and quantitative characteristics on crossbreeeding local chicken between Pelung and Arab chicken (PxA). It was done based on lowness of performance local chicken in Indonesia which are correlation with lowness of protein consumption rate. Crossbred PxA chicken were expected to show better productivities performance of the crossbred chicken were grow rate, increasing body weight, and body measurements. T-test and Principal Component Analysis was used to explain crossbred PxA chicken performances.. Crossbred chicken showed a good performance potency. Males body weight were 587.33±58.93 g (10.03% of coeficient variation) and the females were 501.42±70.53 g (14.07% of coeficient variation) at the seventh weeks in ages. The body weight was showed significant difference (P<0.05) on the third week in ages between males and females crossbred PxA chicken, and very significant difference (P<0.01) at the forth till seventh week. Significant increasing body weight both of males and females crossbred PxA chicken were at the fust to second week interval. Body measurements were showed significant difference (P<0.05) for length of third finger, shank, back, and body weight at the eleventh week of ages, and very significant difference (P<0.01) for length of wings, height of comb, and height of head. The heighest variety of body measurement both of males (25.0%) and females (27.78%) at the eleventh week in ages was in length of maxilla, and the lowest variety both of them in length of third finger.
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Judul: Performa Produksi Hasil Persilangan Ayam Pelung x Sentul x Kampung x Ras Pedaging Umur 12-21 Minggu
Abstrak: This research studied the performance of PSKB and PSBK chicken in growth phase (12-21 weeks). PSKB chicken was crossbred between pelung-sentul (PS) cock with kampung-meat type (KB) hen. PSBK chicken was crossbred between pelung-sentul (PS) cock with meat type-kampung (BK) hen. This research used 12 males PSKB, 23 females PSKB, 11 males PSBK, and 9 females PSBK. Variables measured were body weight, body weight gain, feed intake, feed conversion, mortality, age of first egg, weight of first egg, and indexs of egg. The result of this research were not significant (P>0.05) between PSKB cock with PSBK cock and PSKB hen with PSBK hen on body weight, body weight gain, feed intake, feed conversion, weight of first egg, and indexs of egg. Age of first egg were significantly different (P<0.05) between PSKB hen with PSBK hen. The males of PSKB and PSBK had better performance than the females. Crossbred of pelung, sentul, kampong, and meat type showed better performance than local chicken.
Keyword: crossbred, performance, PSBK chicken, PSKB chicken

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