Judul: Carcass and non carcass productivity of local beef cattle based on body fatness score
Abstrak: Indonesia has a potentially local beef cattle population which contributes markedly to the national beef production. The main problem of the cattle industry is the diverse condition of cattle fatness slaughtered at the processing plant. The differences in cattle fatness may influence productivity of the local beef cattle. The study was aimed to evaluate the effect body fatness on carcass and non carcass productivity within each frame size of local beef cattle. This study used 144 male local beef cattle obtained from eighteen slaughter houses within ten provinces in Indonesia. They comprised 48 heads of small frame size cattle (bali and madura cattle), 27 heads of medium frame size cattle (ongole cross and sumba ongole cattle), and 69 heads of large frame size cattle (local crossbreed cattle). The experiment used Completely Randomized Design. The collected data were then analyzed using analysis of variance and further between treatment differences were tested by Duncan Multiple Range Test. The results showed that increased body fatness score would be followed by increased slaughter weights, carcass weights, and carcass percentages. The effect of body fatness on weights and percentages of non carcass components showed varying results. Nevertheless, it was suggested that increased fatness score would be followed by increased weights and decreased percentages of non carcass components. The cattle used in this study have not reached optimal slaughtered point, both in proportion and average slaughter weight. Proportion of ideal body fatness level (fat condition) was 19.44 % from the total animal observed. General average of slaughter weight for small, medium, and large frame size 270.30 kg, 354.78 kg, and 389.33 kg, respectively
Keyword: productivity, local beef cattle, body fatness score, frame size

Judul: Study on the growth and distribution of meat and estimation of productivity of beef carcass from feedlot fattening
Abstrak: Penelitian ini bertujuan untuk mempelajari pertumbuhan dan distribusi daging pada komponen karkas dan potongan komersial karkas, produktivitas karkas sapi dan estimasi produktivitas karkas sapi Australian Commercial Cross (ACC) dan Brahman Cross (BX) berdasarkan kategori jenis kelamin cow, heifer dan steer (sex class) dengan konformasi butt shape yang berbeda Jumlah sapi yang digunakan sebanyak 165 ekOf dengan kisaran bobot potong 330 - 500 kg, berasal dati penggernukan feedlot. Penelirian menggnnakan metode Regresi Linear dan Regresi Bergand. serta Rancangan Acak Lengkap pola faktorial 2 x 3, dan 3 x 3., This research was done to study the growth and distribution of carcass components, wholesale cuts, productivity of beef carcass and estimation of carcass productivity from Australian Conunercial Cross and Brahman Cross cattle, sex class different and beef shape comformation. The number of animals used was 165 heads with the body weight ranged 330 - 5()() kg taken from feedlot fattening. Research used linear regression and multiple regression method and completely randomized design factorial 2 x 3 and 3 x 3.
Keyword: Carcass productivity, Chuck, cuberolls, Silverside, Topside, Knuckles, Flanks

Judul: Nanokristalin Pirit (FeS2) sebagai Material Semikonduktor Fotovoltaik.
Abstrak: Teknologi fotovoltaik adalah suatu proses yang dapat mengubah sinar matahari menjadi energi listrik dengan media semikonduktor. Penggunaan sel surya untuk fotovoltaik hanya dapat mengonversi radiasi matahari menjadi energi listrik kurang dari 20%. Efisiensi akan meningkat ketika material semikonduktor untuk fotovoltaik dibuat menjadi ukuran nano. Pirit merupakan salah satu material semikonduktor fotovoltaik yang memiliki energi pita celah (Eg) dalam kisaran 0.8–0.95 eV. Energi pita celah tersebut terbukti meningkat ketika disintesis dengan metode hidrotermal menggunakan beragam molar [S]:[Fe] pada suhu 200 °C dalam 24 jam. Nilai energi pita celah yang dihasilkan adalah 1.58–2.073 eV. Ukuran nanokristalin pirit yang dihasilkan berada pada kisaran 21.04–58.77 nm menurut data Particle Size Analyzer. Besarnya ukuran nanokristal pirit yang tumbuh kurang dari 50 nm merupakan poin penting untuk aplikasi fotovoltaik.
Keyword: Hidrotermal, fotovoltaik, nanokristal, pirit