Judul: IPB (Bogor Agricultural University)
Abstrak: Penelitian dibagi dalam tiga tahap, masing-masing disebut Penelitian I melibatkan 48 rkor babi sapihan, Penelitian II melibatkan 46 ekor babi sedang tumbuh dan Penelitain III melibatkan 16 ekor babi betina dara (siap kawin). Ketiga penelitian ini dilakukan dengan menggunakan metode percobaan dalam Rancangan Petak Terpisah. Faktor jenis atap terdiri dan faktor luas lantai kandang terdiri dari emapt macam ukuran sebagai perlakuan anak petak, sedangkan faktor luas alntai kandang berbeda ukurannya di antara ke tiga penelitian. Luas lantai kandang (m2/ekor) yang di cobakan pada Penelitain I adalah 0.25, 0.35, 045 dan, 0.55, pada Penelitian II adalah 0.45, 0.55, 0.65, dan 0.75, masing0masing dengan tiga ulangan dan pada Penelitain III adalah 0.9,1.1,1.3,dab 1.5 dengan dua ulangan.
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Judul: IPB (Bogor Agricultural University)
Abstrak: Penelitian ini dikerjakan di Laboratorium Kimia Faal, Jurusan FIFARM, Fakultas Kedokteran Hewan IPB, selama 18 bulan yang terdiri atas dua penelitian yaitu penelitian pada kambing betina tumbuh dan penelitian pada kambing laktasi. Pada penelitian pertama digunakan 20 ekor kambing betina umur lepas sapih dengan bobot rataan 14 kg yang secara random dikelompokkan ke dalam 5 perlakuan pemberian pakan yaitu ad libitum (R1), dan 90, 80, 70 dan 60% dari ad libitum masing-masing sebagai R2,R3,R4 dan RS.
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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