Judul: Peran Karakteristik Pelaku dan Pengelolaan terhadap Produktivitas Pendederan Ikan Gurame di Desa Sukawening, Kecamatan Dramaga, Kabupaten Bogor
Abstrak: Desa Sukawening, Kecamatan Dramaga, Kabupaten Bogor, Provinsi Jawa Barat menjadi salah satu desa yang memiliki peluang besar dalam pengembangan usaha pendederan ikan gurame, tetapi produktivitasnya belum optimal. Penelitian ini bertujuan menganalisis peran karakteristik pelaku dan tingkat pengelolaan terhadap produktivitas pendederan ikan gurame di Desa Sukawening. Penelitian dilakukan dengan metode survei terhadap karakteristik pelaku pendederan, pengelolaan, dan produktivitas benih ikan gurame. Hasil penelitian menunjukkan bahwa pendederan gurame dimulai dari ukuran 1,5-2,0 cm hingga panen 7-8 cm selama 4 bulan, yang dilakukan pada luasan kolam 67-150 m2 dengan padat tebar ikan 5-21 ekor/m2. Kelangsungan hidup ikan rata-rata 89% dengan produktivitas cukup bervariasi yaitu 4,92-18,67 ekor/m2. Berdasarkan persamaan regresi dengan nilai r dan R2, produktivitas pendederan gurame tidak dipengaruhi oleh karakteristik pelaku usaha dan luas kolam, tetapi dipengaruhi sangat kuat oleh faktor pengelolaan berupa penerapan padat tebar ikan dengan persamaan y = 0,899x-0,2663 dengan nilai r = 0,9846 dan R2 = 0,9695
Keyword: optimal, stocking density, survival rate

Judul: Optimalisasi input produksi budidaya dalam pendederan ikan gurame Osphronemus gouramy di Desa Petir Kecamatan Dramaga Kabupaten Bogor
Abstrak: Increased production of gurame, especially in the area the Petir Village every year have ups and downs. The purpose of this study to apply the technical production of gurame to optimalization nursery and financial analysis to generate optimal profits. Method used is a case study with intake sample method in the form of purposive sampling. Data Analyse use Cobb-Douglas method and finansial analysys. Estimation of efficiency of input use the optimal input obtained is 42 ekor/m2 for fish seed, 0,525 kg/m2 for urea, 0,021 kg/m2 for lime, 0,915 for postal and 0,329 kg/m2 for flour pellets. Analyse the production of gurame at optimal condition is R/C 1,78, Pay Back Period 0,58 year and break Even Point to Rp 16.605.224 and 11.319 fish seed. Investment analysis criteria with third scenario represent best scenario with value NPV equal to 175.102.279, Net B/C 6,81 and IRR equal to 144 %. Sensitivity analysis by changing the fish seed gurame price by 20% shows that the business is still viable to run.
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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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