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 %.
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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.
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Judul: Katalis Zink Ferit Tersubstitusi Cu untuk Oksidasi Benzil Alkohol
Abstrak: Katalis berperan dalam menurunkan energi aktivasi. Katalis ZnFe2O4 dan ZnFe2O4 tersubstitusi Cu disintesis menggunakan metode kopresipitasi untuk digunakan dalam oksidasi benzil alkohol. Katalis dicirikan dengan spektrofotometer inframerah (FTIR) dan difraktometer sinar-X. Spektrum FTIR menunjukkan puncak serapan dari ikatan Zn-O dan Fe-O masing-masing pada rentang 559‒575 cm-1 dan 419‒447 cm-1. Difraktogram menunjukkan terbentuknya fase tunggal Zn0.6Cu0.4Fe2O4 pada katalis ZnFe2O4 tersubstitusi Cu 20%. Benzil alkohol dioksidasi dengan sistem refluks. Konversi benzil alkohol meningkat dengan meningkatnya suhu. Kadar benzaldehida yang dihasilkan dengan katalis ZnFe2O4 tersubstitusi Cu 20% lebih tinggi dibandingkan dengan katalis ZnFe2O4 yang tidak tersubstitusi dan yang tersubstitusi Cu 60 dan 80%. Hal tersebut menunjukkan bahwa katalis ZnFe2O4 tersubstitusi Cu 20% memiliki kinerja yang lebih baik dalam oksidasi benzil alkohol menjadi benzaldehida dengan kadar benzaldehida 8.763%.
Keyword: Benzil alkohol, katalis, oksidasi, ZnFe2O4