Judul: Analisa Perbedaan Tenaga Mesin (HP) dan Ukuran Kapal (GT) Pada Perikanan Purse Seine di Tegal, Jawa Tengah
Abstrak: Tujuan dari penelitian ini adalah untuk melihat pe- ngaruh perbedaan tenaga mesin (HP) dan ukuran kapal (GT) terhadap hasil tangkapan pada perikanan purse seine, serta untuk mencari kombinasi antara tenaga mesin (HP) dan ukur- an kapal (GT) yang menguntungkan secara teknis maupun eko- nomis bagi usaha perikanan purse seine di Kotamadya Tegal. Penelitian ini berlangsung selama kurang lebih dua bulan, sejak tanggal 7 Mei sampai dengan 2 Juli 1983. Me- tode yang digunakan dalam penelitian ini adalah studi ka- sus (case study) dengan mengambil kasus kapal-kapal purse seine yang berukuran 15,00 - 24,99 GT dan 25,00 34,99 GT dengan tenaga penggerak untuk kedua kelompok ukuran kapal tersebut masing-masing 61 HP dan 131 160 HP. - - 110 HP, 111 90 HP, 91- 130
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Judul: Gross tonage hubungannya dengan tenaga penggerak (hp) pada kapal pukat cincin (purse seine) di kabupaten takalar, provinsi sulawesi selatan:
Abstrak: The waters of Takalar Regency provide a good fishing area for pelagic fish such as kembung, layang, tembang, teri, lemuru, cakalang, and belanak. There are various types of vessels with fishing equipment of different sizes in the area, one of which is purse seiner, a purse seine vessel which dominates the area. The objective of this study is to determine the values of HP and GT of purse seiners in Takalar. An initial step was taken to directly measure several vessels. Measuring the main dimensions was performed to determine the value of GT vessel compared to the value of GT stated in the vessel documents and the data from the listed engine power compared to the actual engine power during operation. The analysis was conducted descriptively, numerically, and comparatively on the purse seiners in Takalar regency based on naval architecture method. The success of a purse seine fishing depends on the speed of setting and the speed of putting nets in circle. The result for a vessel with the biggest IHP of 330 HP and the lowest IHP of 115 HP. Based on those IHP value, a speed of 10.56 knots could be generated for the largest IHP and 2.50 knots for the lowest. The simulation results for 8 vessels show that HP, should be 20 times from the GT value. Since the highest GT value is 20-30 GT, so the IHP value of 400-600 HP.
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Judul: Sintesis 3-Benzoil-7-hidroksiflavon dari Resorsinol
Abstrak: Flavonoid is the most abundant naturally-occuring polyphenolic compound with C6-C3-C6 carbon skeleton. Flavones is a group of flavonoid having a broad bioactivity spectrum. In this experiment, 3-benzoyl-7-hydoxyflavone was successfully synthesized via 2-steps from resorcinol. In the first step, resorcinol was acetylated with AcOH/ZnCl2 producing resacetophenone with 89% yield. Subsequently, benzoylation and rearrangement of resacetophenone using 2 equivalent of benzoyl chloride and 7 equivalent of K2CO3 in acetone produced 3-benzoyl-7-hydroxyflavone with 62% yield. Synthesis of 3-benzoyl-7-hydroxyflavone from resorcinol provided evidence for new reaction mechanism of flavon formation without Baker-Venkataraman rearrangement proposed by several previous researchers. All products in this study has been characterized spectroscopically.
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