Judul: Analisis Pendapatan dan Efisiensi Produksi Usahatani Budidaya Pembesaran Ikan Mas dan Nila Pada Keramba Jaring Apung Ganda (Studi Kasus Waduk Cirata Desa Bobojong Kecamatan Mande Kabupaten Cianjur)
Abstrak: Cirata reservoir is one of three reservoirs in Citarum River that has major contribution to the fisheries in West Java. Fisheries in Cirata is conducted by fish rearing (Keramba cage) double KJA. Aquaculture of KJA performed by enlargement Cyprinus carpio and tilapia. This is because those commodities were major commodities in Cirata especially Cyprinus carpio. Enlargement of Cyprinus carpio and tilapia Aquaculture was cultivated widely in Bobojong village. The Objective of this research were to identify the structure of costs and farm income from KJA enlargement of Cyprinus carpio and tilapia aquaculturein Bobojong village by using π=TR-TC method, to analyze the factors that affect farm income from enlargement of Cyprinus carpio and tilapia aquaculture in Bobojong Village by using multiple linear regressi on analysis, to analyze the efficiency of production by using MR = MC and revenue efficiency y R/C method. Based on there gressi on results obtained, the factors that affect farmers' income significantly on the 5% through significance level were the number of Cyprinus carpio production, total production of tilapia, Cyprinus carpio seed costs, the price of tilapia seed, and the price of Cyprinus carpio feed education were not affected largely for the farm income. The results obtained on the third objectives howed that production off arming aquaculture on KJA fisheries was not optimal so that the production and production inputs used need to be optimized in order to get maximum profit. Enlargement of Cyprinus carpio aquaculture and tilapia in Bobojong Village was feasible to performed because the value of R/C off farm income from cash costs and total cost was greater than one.
Keyword: production, income, Cyprinus carpio and tilapia aquaculture, efficiency

Judul: Analisis faktor produksi dan pengembangan usaha budidaya Ikan Mas (Cyprinus carpio) dalam jaring apung di Waduk Cirata Desa Cikidang Bayaban, Kecamatan Mande, Kabupaten Cianjur, Jawa Barat
Abstrak: Produksi ikan mas dari usaha budidaya jaring apung di Waduk Cirata dari tahun ke tahun mengalami peningkatan seiring dengan pertambahan jumlah kolam jaring apung yang diusahakan. Pada satu tahun terakhir 1994-1995 produk- tivitas ikan mas dari usaha jaring apung cenderung menga- lami penurunan. Berhubungan dengan hal tersebut maka untuk mendapatkan manfaat yang lebih besar dalam usaha budidaya jaring apung diperlukan penyusunan perencanaan dan kebijakan dalam pengelolaannya. Salah satu pengelo- laan ini adalah aspek manajemen produksi yaitu dengan cara mengalokasikan input-input secara tepat sebagai salah satu usaha untuk mendapat produksi yang optimum dengan keun- tungan maksimum atau disebut efisiensi usaha. Sedangkan untuk melihat prospek pengembangan usaha jaring apung dimasa akan datang di waduk Cirata dilakukan analisis finansial. Tujuan dari penelitian ini adalah (1) Mengetahui alokasi penggunaan faktor produksi usaha jaring apung di daerah penelitian (2) Mencari kombinasi penggunaan faktor produksi yang paling tepat (3) Melakukan kajian pengem- bangan usaha melalui analisis finansial. Sedangkan kegu- naan dari penelitian ini adalah: (1) Bagi mahasiswa seba- gai latihan di lapangan dan sebagai salah satu syarat ...
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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