Judul: Comparison of Depth and Material of Lobster Larva Post Traps in Awang Bay, Lombok, West Nusa Tenggara
Abstrak: Lobster adalah salah satu komoditas perikanan yang memiliki ekonomis tinggi. Usaha budidaya lobster masih bergantung larva dari alam, sedangkan larva yang tertangkap jumlahnya sedikit dan ukuran tidak seragam. Sehingga diperlukan perangkap yang efektif dan efisien. Keefektifan suatu perangkap disebabkan berbagai faktor salah satunya yaitu kedalaman penempatan perangkap dan material perangkap. Sehingga pada penelitian ini diuji berdasarkan uji kedalaman penempatan perangkap dan material pembentuk. Pada uji material yang digunakan yaitu material dari kantong semen dan kantong pakan dan uji kedalaman penempatan perangkap kedalaman yang digunakan yaitu kedalaman 2,4,6,8,10,12, dan 14 meter. Penelitian ini bertujuan untuk membandingkan material perangkap yang efektif dan mengidentifikasi kedalaman peletakan perangkap yang tepat yang sesuai jenis dan ukuran post larva lobster. Hasil penelitian menunjukkan pada penempatan kedalaman perangkap jenis yang paling banyak didapatkan yaitu lobster pasir pada kedalaman 14 meter dengan jumlah 35 ekor dan ukuran 5 cm banyak ditemukan pada kedalaman 14 meter dengan jumlah 25 ekor. Pada perbandingan material perangkap kantong semen mendapatkan hasil tangkapan tetinggi, dimana kantong semen jenis larva lobster yang paling banyak tertangkap yaitu lobster pasir dengan jumlah 154 ekor dan pada kantong semen didapatkan ukuran 5 dengan jumlah yang paling banyak tertangkap. Berdasarkan hasil penelitian menunjukan kedalaman 14 meter dan bahan karung semen mendapatkan post larva lobster terbanyak dengan jenis yang tertangkap yaitu lobster pasir dan ukuran 5 cm mendapatkan hasil tangkapan tertinggi
Keyword: Post larva lobster, trap, material, material, trap, post larva lobster

Judul: Efektivitas Perangkap Juvenil Spiny Lobster Berdasarkan Tingkat Kedalaman, Jenis Bahan Dan Lama Perendaman Di Perairan Palabuhanratu
Abstrak: The objectives of the research is to create an effective trap of spiny lobster juvenile base on trap position in the sea water layer, type of the material and trap soaking time. The experimental fishing was conducted in the Kertajaya Sangra wayang water of Sukabumi District. There are 7 levels of water depth are 1,5 m, 3 m, 4,5 m, 6 m, 7,5 m, 9 m, 10,5 m and 4 kinds material are waring, woven shirt, woven netting and gunny. The result of the research was the traps can catch the spiny lobster juvenile, the most catch was found in the 1-3 m water layers and use material gunny. The main catch was spiny lobster juvenile and catch were crustacean group and fish group (pisces). The trap’s position in the water layer influence the catch value of spiny lobster.. The most main catch was found in water levels 1,5m and 3m. The best material for spiny lobster juveniles trap was gunny. The fisherman can use spiny lobster juvenile trap by operating in water levels 1-3 m, use gunny meterial with one day soaking time.
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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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