Judul: Karakteristik fisik daging sapi dara brahman cross dengan pemberian jenis konsentrat yang berbeda
Abstrak: This experiment was conducted to know physical characteristics of Brahman Cross heifer’s beef at different type of concentrate. Nine heads of Brahman Cross heifers (1.5-2 year of age) with initial weight of 330±26.93 kg and the final weight of 357±26.82 kg were used. They were devided into three groups subjected to three dietary treatment. P1 treatment concentrate with 11% of crude protein (CP) and 70.42% of Total Digestible Nutrient (TDN), P2 treatment concentrate with 13.03% of CP and 70% of TDN, and then P3 treatment concentrate with 16% of CP and 65% of TDN. The observation of fattening was done for 60 days (2 month). The data were analyzed by analysis variance based on general linear model procedure and Tukey test. The measurement of meat quality was included : value of pH, shearforce, cooking loss, water holding capacity, meat colour and marbling score. The value of pH P1 5,82±0,05 has a significantly higher result than P2 and P3 with 5,62±0,02; 5,60±0,03, the shearforce of P2 8,79±0,07 which was significantly higher than P1 and P3 which were 7,26±0,10; 7,33±0,26, the cooking loss were significantly different in each treatment of P1, P2, and P3, they are 37,23±0,09; 40,21±0,78; 44,04±0,66 respectively, the water holding capacity of P1 25,54±0,93 were significantly lower than P2 and P3, there are 30,67±0,23;31,50±1,24 respectively, while marbling measurement and meat colour were analyzed by using descriptive test with each of average value 1,33±0,5 and 5,33±0,5. Physical characteristics of Brahman Cross heifer’s beef in the range of normal meat.
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Judul: Karakteristik Karkas Sifat Fisik dan Kimia Daging Sapi Brahman Cross (BX) Heifer Berbasis Pakan Bungkil Inti Sawit
Abstrak: Kualitas daging adalah salah satu faktor yang memengaruhi tingkat penerimaan konsumen. Penelitian ini bertujuan untuk mengetahui perbedaan karakteristik karkas, sifat fisik dan kimia daging sapi brahman cross (BX) heifer berbasis konsentrat bungkil inti sawit dengan konsentrat serealia sebagai konsentrat komersial. Ternak yang digunakan berumur 20-42 bulan (I1-I3) dan menggunakan otot bagian Longissimus dorsi (LD) dan Semitendinosus (ST). Karakteristik karkas yang diamati adalah bobot hidup, tebal lemak punggung, luas urat daging mata rusuk, warna daging, warna lemak, dan marbling. Sifat fisik daging yang diamati adalah pH, daya mengikat air, keempukan, dan susut masak. Sifat kimia daging yang diamati adalah kadar air, abu, protein, lemak, kalsium, fosfor, dan asam lemak (saturated fatty acid, dan unsaturated fatty acid). Data penelitian diolah dengan uji T. Penilaian karakteristik karkas diperoleh hasil yang berbeda nyata (P 0.05) pada tebal lemak punggung, luas urat daging mata rusuk, dan warna. Sifat fisik daging menunjukan hasil yang berbeda nyata (P 0.05) pada pH, daya mengikat air daging gandik, dan keempukan daging gandik. Sifat kimia daging terdapat hasil berbeda nyata (P 0.05) pada kadar protein, kadar abu, kadar fosfor daging loin, asam lemak dalam lemak (miristat, palmitat, stearat, oleat, linoleat, dan linolenat), dan asam lemak dalam daging (miristat, palmitat, stearat, oleat, dan linoleat). Total asam lemak jenuh dalam lemak dan dalam daging tidak berbeda nyata (P 0.05) sedangkan total asam lemak tidak jenuh dalam lemak dan daging berbeda nyata (P 0.05).
Keyword: bungkil inti sawit, BX heifer, karakteristik karkas, kualittas daging

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