Judul: Distribusi daging pada heifer dan steer hasil penggemukan feedlot
Abstrak: Produksi daging yang berasal dari bangsa sapi potong lokal belum mampu Eemenuhi permintaan daging untuk konsumsi. Hal ini merangsang pengusaha untuk mendatangkan sapi bakalan yang akan digemukkan. Sapi bakalan impor yang sukai oleh pengusaha diantaranya bangsa sapi ACC dara (heifer) dan jantan astrasi (steer) yang mempunyai kemampuan pertumbuhan lebih cepat, mudah beradaptasi dengan lingkungan dan pakan serta mudah diperoleh. Penelitian ini bertujuan untuk mengetahui pengaruh jenis kelamin terhadap distribusi daging pada sapi ACC. Penelitian ini menggunakan sapi heifer dan steer, masing-masing sebanyak 15 ekor dengan kisaran umur potong 1-2 tahun dan bobot potong 350-500 kg. Rancangan percobaan penelitian menggunakan Rancangan Acak Lengkap sederhana dengan perlakuan jenis kelamin (heifer dan steer) dan 15 ulangan. Analisis data menggunakan least square means berdasarkan prosedur general linear model. Hasil yang diperoleh pada penelitian ini adalah persentase bobot komponen karkas (tulang, otot dan lemak) pada steer maupun heifer tidak berbeda nyata, yaitu 14,96%, 60,15% dan 18,78% (steer) dan 15,08%, 59,70% dan 18,97% (heifer). Jenis kelamin tidak berpengaruh terhadap persentase bobot komponen karkas tetapi berpengaruh terhadap persentase bobot potongan daging komersial bagian brisket dan cuberoll, yaitu 4,71% dan 2,17% (steer) dan 4,32% dan 2,45% (heifer). Persentase bobot potongan daging komersial chuck, blade, chucktender, shin, striploin, tenderloin, rump, flank, topside, silverside, knuckle dan shank pada steer maupun heifer tidak berbeda nyata yaitu 11,75%, 6,19%, 0,97%, 1,98%, 4,12%, 1,76%, 4,24%, 4,73%, 6,18%, 5,59%, 3,65%, 3% (steer) dan 11,38%, 6,41%, 0,97%, 1,93%, 4,09%, 1,75%, 4,27%, 4,22%, 6,21%, 5,89%, 3,81%, 2,9% (heifer).
Keyword: heifer, steer, bobot karkas, karkas, potongan daging, komersial karkas

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: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell