Judul: Teknologi budidaya udang galah (Macrobrachium rosenbergii) dan ikan tambakan (Helostoma temmincki) intensif berbasis Integrated Multi Thropic Aquaculture dengan kepadatan berbeda
Abstrak: IMTA (Integrated Multi Thropic Aquaculture) is a aquaculture system that integrates several organisms and focuses on the trophic level differences of each organism. IMTA will be able to improve the quality of the water and of course have a direct impact on survival rate, stocking density and increase the growth rate. The research was using completely randomized design at many treatments in the form of initial stocking density difference between freshwater giant prawns and tambakan that UG20TM50 20 prawns/m2 and 50 tambakan/m2, UG20TM100 20 prawns/ m2 and 100 tambakan/ m2. Each treatment was repeated three times. The best treatment Based on 60 days cultivation was UG20TM50 with the survival rate of freshwater giant prawn (75.83±6.29%), spesific growth rate (3.02±0.16%), total production (3065.44±79.95g) and survival rate of tambakan (80±1.32%) spesific growth rate (2.94±0.25%) and total production (10723.47±975.21g), and supported by a temperature (28.90–31.67°C), pH (6.50– 7.87), DO (4.08–5.7 mg/L), ammonia (0.00010–0.0413) mg/L.
Keyword: Bogor Agricultural University (IPB), water quality., tambakan, IMTA, freshwater giant prawn

Judul: Kualitas media budidaya dan produksi udang galah (Macrobrachium rosenbergii) yang dipelihara pada sistem IMTA (Integrated Multi Trophic Aquaculture) dengan kepadatan berbeda
Abstrak: Improving water quality and stocking densities are expected to increase freshwater giant prawn production. By using IMTA system is aimed to improve water quality which can increase survival rate, stocking densities, growth rate, and economically profitable. This research was carried out with complete random design with 3 treatments. The treatments were (A) 10 prawn/m2, (B) 20 prawn/m2, (C) 30 prawn/m2 of stocking densities, each treatments had 3 replication. Water flow was integrated with freshwater giant prawn cultivation and biofilter systems. Cultivation of freshwater giant prawn during 72 days in IMTA system had better treatment at 10 prawn/m2 densities. That treatment had temperature (25 – 31.3°C), pH (6.6 – 8.0), dissolved oxygen (3.0 – 5.7 mg/L), nitrate (0.081 – 0.338 mg/L), phosphate (0.152 – 0.338 mg/L) which still good for cultivation, the low of amonia (0.0002 – 0.0593 mg/L) and nitrite (0.007 – 0.109 mg/L), and also has the best survival rate, growth rate, final body weight, and economic return
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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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