Judul: Rancangan fungsional dan struktural kandang ayam ras pedaging dengan konstruksi bambu di Sukabumi Jawa Barat
Abstrak: Ayam ras pedaging (broiler=peranggang) merupakan ternak unggas yng diusahakan dalam sekala rumah tangga dan industri peternakan. Ayam ras pe aging secara genetis sengaja diciptakan sedemikian rupa sehingga dalam waktu yang reletif singkat yaitu sekitar 4-8 minggu hasilnya sudah dapat dimanfaatkan. Direktoret Jenderal Peternakan, Departemen Pertanian RI (1998) menyatakan bahwa sela na periode 1990-1994, konsumsi terhadap daging ayam ras pedaging terus me tingrat yaitu sekitar 8,21%/orang/tahun. Lebih dari 50% daging unggas dikonsumsi sebagai sumber pangan hasil hewani. Penelitian ini bertujuan untuk merancang kandang ayam ras pedaging sistem beralas tebal (litter) yang berumur ekonomis tinggi. Tujuan khusus yaitu membuat rancangan fungsional dan struktural dengan mengunakan konstruksi bambu. merancang struktural sehingga mendapatkan suatu dimensi konstruks yang seekonomis mungkin dan membuat detail sambungan yang paling sesua: ir tuk digunakan, serta membuat rencana anggaran biaya yang dibutuhkan ntuk pembangunan kandang tersebut.
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Judul: Disain Struktural Kandang Ayam Ras Pedaging dengan Konstruksi Kayu
Abstrak: Ayam ras pedaging mempakan hewan ternak yang sudah dibudidayakan dan dagingnya disukai banyak orang. Untuk memenuhi konsumen, ayam yang diternakkan hams berkualitas tinggi dengan kuantitas tetap dan berkesinambungan. Hal ini hanya bisa dipenuhi jika ayam yang dipelihara berasal dari bibit yang unggul, diberi pakan yang cukup dan kandang yang sesuai untuk pertumbuhan dan perkembangannya.
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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