Judul: Penentuan Lokasi Budidaya Kerapu Macan (Epinephelus Fuscoguttatus) Menggunakan Sistem Informasi Geografis (Studi Kasus di Perairan Kabupaten Sinjai)
Abstrak: Brown-Marbled grouper (Epinephelus fuscoguttatus) is a reef fish that have high economic value and is now cultured in the Sembilan Islands Waters, Sinjai District. This study aims to determine the suitability of the Sinjai District waters for brown-marbled grouper aquaculture develeopment based on waters parameters data which includes water depth, surface temperature, DO, pH, salinity, ammonia, surface current, brightness, and high waves. The data of each parameter, as points, are mapped. Then they are formed a contour in which the predetermined the next point is processed to form the contour, which is then inserted predetermined suitability values is inserted. The next step is to overlay and analyze those results produce Suitability Region Map For the brown marbled grouper Aquaculture. Area that are very suitable for the brown-marbled grouper aquaculture (S1) covering 58,84 km2 or approximately 11,27 %, suitable (S2) covering 463,24 km2 or approximately 88,73 %.
Keyword: 

Judul: Penentuan kesesuaian lahan keramba jaring apung kerapu macan (Epinephelus fuscogutattus) menggunakan sistem informasi geografis di pulau panggang Kepulauan Seribu
Abstrak: Conformity site selection for mariculture Tiger Grouper (Ephinephelus fuscogutattus) in net floating cages has been done in Panggang Island, Thousand Islands by using Geographical Information System. The evaluation of water quality in Panggang Island was based on physical and chemical aspecs, so Panggang Island is suitable for mariculture Tiger Grouper (Ephinephelus fuscogutattus) in net floating cages. The parameter were observed to see the water quality include substrat parameter, depth, protected area, temperature, salinity, dissolved oxygen, brightness, flow rate, pH and amoniac. The result shows that the area for mariculture of Tiger Grouper (Ephinephelus fuscogutattus) in net floating cages accounts for 0,94 Km2 in category class very suitable, 2,32 Km2 in category class suitable, and 3,20 Km2 in category class not suitable.
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