Judul: Pendugaan model fungsi produksi usaha ternak domba di wilayah Garut dan Cirebon
Abstrak: Tingkat konsumsi per kapita hasil peternakan yang berupa daging, telur, dan susu, sejak tahun 1969 hingga sekarang memperlihatkan angka yang hampir selalu tetap, yakni daging 3.5 kg per tahun, telur 11 butir per tahun, dan susu 0.5 liter per tahun, atau sama dengan 2.2 gram protein hewani per kapita per hari. Angka ini masih jauh dari angka standar gizi nasional, yakni 5 gram per kapita per hari (Direktorat Jenderal Peternakan, 1972). Rendahnya tingkat konsumoi protein hewani tersebut antara lain disebabkan oleh: (a) daya beli masyarakat masih rendah, (b) produksi hasil peternakan juga rendah, dan (c) kebiasaan makan masyarakat yang belum mengutamakan konsumsi protein dalam mencukupi kebutuhan menu sehari-hari. Sehubungan dengan hal di atas. pemerintah mencoba merumuskan landasan kerja di bidang peternakan yang antara lain berupa: (a) penyelenggaraan program peningkatan hasil produksi ternak untuk konsumsi dalam negeri melalui jenis ternak yang paling mudah dan cepat dikembangkan dan dengan modal yang lebih murah (yaitu urutan: ayam, itik, domba, dan kambing), (b) merangsang dan memberikan penyuluhan serta bimbingan kepada masyarakat untuk beralih dari pemeliharaan ternak secara tradisional kepada pengusahaan ...
Keyword: Mathematical model

Judul: Pendugaan model fungsi produksi dan analisis efisiensi usaha penggemukan domba (studi kasus di peternakan domba tawakkal desa Cimande Hilir, kecamatan Caringin, kabupaten Bogor)
Abstrak: The fattening sheep farming is most profitable husbandry enterprise. The most important reason are, it only used a little capital and fastest to get break even point. The aim of fattening program is to get growth of body weight level and the production function model is an effective way to know it. In Tawakkal sheep farming, the best production function model that can be used is Cobb-Douglas mood.
Keyword: 

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