Judul: Hubungan antara beberapa sifat repoduksi ayam kampung di desa cigombong kecamatan cijeruk kabupaten DT II bogor
Abstrak: Penelitian ini dilakukan di desa Cigombong, kecamatan Cijeruk, kabupaten Dati II Bogor selama 3 bulan, mulai tanggal 26 Februari sampai dengan 12 Mei 1990. Tujuan penelitian adalah untuk mendapatkan data dasar mengenai beberapa sifat reproduksi ayam kampung pada keadaan alamnya dan hubungan antar sifat-sifat tersebut. Data diolah dengan menggunakan persamaan regresi linier Y=a+bX dan kefisien korelasi (r). Keeratan hubungan dan pe ngaruh periode pentasan terhadap sifat-sifat reproduksi tersebut diuji dengan uji F. 109 ekor ayam kampung dikelompokan menjadi 4 kelompok berdasarkan periode penetasan individu itu sendiri, kemudian diamati mengenai produksi telur perperiode bertelurnya bobot telur, lama waktu mengeram, daya tetas telur yang ditetaskan, mortalitas anak ayam dan bobot badan masing-masing individu. ...
Keyword: 

Judul: Hubungan Antar Beberapa Sifat Produksi Ayam Kampung Di Desa Cigombong, Kecamatan  Cijeruk, Kabupaten Bogor
Abstrak: Penelitian ini bertujuan untuk mendapatkan data dasar beberapa sifat produksi ayam kampung dan hubungan antara sifat-sifat produksi tersebut. Pengamatan dilaksanakan di Desa Cigombong, kecamatan Cijeruk, Kabupaten Bogor dari tanggal 21 Pebruari samapai dengan tanggal 13 Mei 1980.
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