Judul: Penentuan Kesesuaian Lokasi Budidaya Rumput Laut di Perairan Teluk Gerupuk, Nusa Tenggara Barat Menggunakan Penginderaan Jauh dan SIG
Abstrak: Site selection for seaweed culture sometimes got some problems that need more cost, time, and energy. The technology such as remote sensing and Geographic Information Systems (GIS) were a great solution for site selection to development seaweed production. The aim of this research is to analyze suitability of the seaweed culture location at Gerupuk Bay, West Nusa Tenggara. The site selection are using Landsat 8 satellite with Surface Temperature of the Sea (SPL), Total Suspended Matter (TSM), and protected location as the parameters. Each parameters are processed using Er Mapper 7.0 software and then Arcview GIS 3.2 software to get the thematic map GIS. After the map’s overlay done, the site selection for seaweed culture could be determined. The results of this study show that the most suitable site for seaweed culture at Gerupuk Bay are 342.44 ha (25.22%), quite suitable site are 190.78 ha (14.05%), and not suitable site are 669.32 ha (49.3%).
Keyword: GIS, seaweed, remote sensing, location

Judul: Budidaya Rumput Laut Kappaphycus alvarezii pada Kawasan S1 (Sesuai) di Teluk Gerupuk, NTB Berdasarkan Penginderaan Jauh dan SIG
Abstrak: One way to determine suitable areas for seaweed cultivation efficiently in terms of cost, time and energy is using remote sensing, however needs to be tested further cultivation. This research aimed to prove the production of seaweed Kappaphycus alvarezii cultivation process, in the suitable areas based on remote sensing at the Bay Gerupuk, West Nusa Tenggara. Seaweed cultivation was done at 3 points (A, B and C) with three repetitions. The results obtained on wet weight measurements of harvest were at point A 556,67 grams, point B 383,33 grams, point C 360 grams. SGR calculation at point A, B and C were 3,89 % ; 3,00 % and 2,86 %. Measurements result of carbohydrate content were at point A 58,07 %; point B 59,49 % and point C 64,44 %. Protein content were at point A 5,68 %; point B 7,23 % and point C 7,55%. Fat content were at point A 0,02 %; point B 0,08 % and point C 0,03 %. Measurements of water content after dried were at point A 27,34 %, point B 26,27 % and point C 26,15 %. Measurement result of a physical-chemical water parameters, overall value of each parameter was still in the proper range for the cultivation activities of seaweed Kappaphycus alvarezii.
Keyword: Kappaphycus alvarezii, growth, proximate

Judul: Sintesis Flavon dari Fenol dan Benzoil Klorida
Abstrak: Flavone is a class of flavonoid, commonly found in plants with wide bioactivity spectrum. A widely used flavone synthesis route is through acidcatalyzed oxidative cyclization of β-diketone. In this study, unsubstituted flavone had been synthesized via 5-step from phenol, with 22% yield and successfully increased the yield of previous study on Fries rearrangement of phenyl acetate and benzoylation of o-HAP steps. Phenol was acetylated resulting 93% phenyl acetate. AlCl3-catalyzed Fries rearrangement in 1.5 hour and at 120 °C converted phenyl acetate into o-hydroxyacetophenone (o-HAP) with 40% yield. AlCl3 as catalyst produced o-HAP with higher and reproducible yield compared with BF3·Et2O and ZnCl2. Benzoylation of o-HAP followed by Baker-Venkataraman rearrangement of the ester product using KOH in dried pyridine produced β-diketone 1-(2- hydroxyphenyl)-3-phenylpropane-1,3-dione. The yield of ester and β-diketone were 71% and 85%, respectively. Finally, oxidative cyclization of β-diketone with sulphuric acid as catalyst produced 99% of flavone. The flavone product had been characterized spectroscopically and its melting point as well.
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