Judul: Analisis Pendapatan, Nilai Tambah, dan Prospek Pengembangan Industri Kecil Tapioka di Jawa Barat
Abstrak: Industry sector which is still surviving and pretty much developed in West Java is tapioca small-sized industry, but derivative industry prices monopolization, incontinuity of raw materials, and also less technology inductions are potensially decrease the revenue of business owner. The purpose of this study are to gain knowledge on the income and value added given by the tapioca industry, and to examine the prospect of developing tapioca industry from the input side and market opportunity. The analyses are separated into income analysis with R/C Ratio, break even point analysis, value added analysis with Hayami Method, and statistical descriptive analysis. From the study it can be conclude that the average business owners produced 100 kg of raw materials which then will produce 21.67 kg raw tapioca and 6.04 kg waste. Average R/C ratio of business owner and production factor owner is more than 1 that means this small-sized tapioca industry still gave them daily income, whereas added value ratio from the processing is just 17.09%. This tapioca processing needs more management which can increase their competitivness by upgrading raw tapioca quality and controlling raw materials continuity
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Judul: Analisis Nilai Tambah Pengolahan Tepung Tapioka di Kabupaten Bogor
Abstrak: Cassava added value will be increased if it is processed to other varieties of food such us tapioca. Tapioca was processed by every level of processing unit. Though processing is certainly will increase the added value of tapioca, the certain amount of the added value increased is still unkown. This study aimed to analyze the added value and profit that was obtained from cassava processing. The analysis was conducted by comparing the added value and the profit per kilogram of tapioca for every scale of processing unit. The result indicated that the added value and the profit of large scale processing unit was higher, by Rp 273.60 per kg of added value and Rp 285.23 per kg of profit, than the added value and the profit of small scale processing unit, which were Rp 206.74 per kg added value and Rp 165.13 of profit. Production cost large scale processing unit had lower cost, which was Rp 1 352.27 per kg, than that of small scale processing unit which was 1 463.00 per kg.
Keyword: tapioca, profit, cassava, added value

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