Judul: Pengaruh pengolahan dan tingkat biji kecipir dalam ransum terhadap bobot saluran pencernaan dan bobot lemak abdomen ayam pedaging
Abstrak: Penelitian ini dilakukan di Laboratorium Bagian Ilmu Produksi Ternak Unggas, Fakultas Peternakan, Institut Pertanian Bogor, selama 7 minggu sejak tanggal 17 Maret sampai dengan 5 Mei 1984. Tujuan penelitian ini adalah untuk mengetahui tingkat optimum penggunaan biji kecipir yang telah direndam dan direbus dengan waktu yang berbeda dalam ransum broiler.
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Judul: Pengaruh pengolahan biji kecapir sebagai bahan campuran ransum terhadap performans dan bobot beberapa organ tubuh ayam pedaging
Abstrak: Penelitian ini dilakukan di Laboratorium Bagian Ilmu Produksi Ternak Unggas, Fakultas Peternakan, Institut Pertanian Bogor, selama 76 hari sejak tanggal 16 Januari 1983 Батраi dengan 9 April 1983. Tujuan penelitian ialah untuk mempelajari pengaruh perendaman dan perebusan biji kecipir dalam usaha menghilangkan aktifitas zat anti nutrisi. Lama perendaman yang dilakukan yaitu: 0, 3, 6, 9, 12 dan 15 jam. Lama perebusan yang dilakukan yaitu 15 dan 30 menit. Penelitian berpijak atas dasar Rancangan Acak Lengkap dengan pola Faktorial 6 x 2. Setiap perlakuan terdiri dari 2 ulangan. Sebagai materi penelitian digunakan 156 ekor ayam pedaging strain Arbor Acres CP 707. Dari hasil penelitian diperoleh bahwa : ...
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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