Judul: Performa gerak crankbait berdasarkan sudut diving lip, kecepatan tarik dan panjang tali pancing tonda (Troll Line).
Abstrak: Troll line is one of the traditional fishing gear that used for catch pelagic fish with high economical value. Troll line operation by dragging in the water with constant speed, so fish will attracted to the lure and chase it. One of lure that common used in this methode of fish catching is crankbait type of Artificial bait. Artificial bait is more popular than the natural bait, because this kind of bait have more resistant and easy to control it than using the natural bait, and crankbait type is common used because of it characteristic that when this type of lure being dragging by boat, it will be dive to certai depth. This research is to indentify factors that influence the depth of this lure. The results shows that the angel of diving lip have a big influence to the depth of the lure,with the best angel of diving lip is 10º. Other factor that show big differences of lures depth is the amount of the line. The model of the lure with dragging speed and range and the line can be specified with D = - 0.984 + 0.0601 X1 + 0.852 X2. This result may be vary depend on kind of bluff body of the lure, and other conditions.
Keyword: Troll lines, line length, crankbait, diving lip, towing speed

Judul: The Use of Vertical Bait to the Catch of The Lift Net in Palabuhanratu Bay
Abstrak: Penggunaan umpan secara vertikal dilakukan karena adanya dugaan sifat ikan yang menyukai besaran iluminasi cahaya tertentu sehingga ikan tersebar pada kedalaman yang berbeda. Umpan vertikal berfungsi untuk memikat dan mengumpulkan ikan pada area penangkapan bagan apung. Penelitian ini bertujuan untuk membandingkan komposisi hasil tangkapan bagan apung perlakuan dan kontrol, menentukan pengaruh penggunaan umpan vertikal terhadap jumlah total hasil tangkapan dan frekuensi hauling. Penelitian ini menggunakan metode experimental fishing dengan analisis data yang digunakan yaitu analisis deskriptif dan analisis statistik. Hasil penelitian menunjukkan bahwa total hasil tangkapan bagan apung memperoleh 19 jenis ikan dengan 5 jenis ikan dominan yaitu ikan tembang (Sardinella gibbosa), lisong (Euthynnus affinis), pepetek (Leiognathus equulus), semar (Mene maculate), dan cumi-cumi (Loligo sp). Penggunaan umpan vertikal berpengaruh nyata terhadap hasil tangkapan bagan apung dan frekuensi hauling bagan apung perlakuan berjumlah 82 kali, frekuensi tersebut lebih banyak dibandingkan dengan bagan apung kontrol yang hanya berjumlah 50 kali., The initial indication of using vertical baits is that some fish are attracted by a certain amount of luminance so that the fish are depth-stratified. Vertical baits can help luring a large amount of fish at the nearby fishing ground. The purpose of this study is to compare results between the catch of the controlled variable (commercial floating liftnets) and liftnet with vertical baits, to determine the impacts of using vertical baits to the total catch and hauling frequency of the liftnet. The method used to conduct this study is experimental fishing with descriptive and statistics data analysis. Results showed that the catch could make as 19 species caught, with 5 most dominant species. Those are; goldstripe gardinella (Sardinella gibbosa), mackerel tuna (Euthynnus affinis), common ponyfish (Leiognathus equllus), moonfish (Mene maculata), and squids (Loligo sp). The results concluded that by using vertical baits had indeed a significant impact to the total catch and the hauling frequency with the number of 82. It was indeed improved plenty more than the controlled variable which is only 50 times.
Keyword: Attractor, bait, hauling, lift net, vertical

Judul: Sintesis Flavonol melalui 2’-Hidroksikalkon
Abstrak: Flavonol is a class of flavonoids commonly found in fruits and vegetables. Flavonol is very useful, especially in food sector and health. In this study, flavonol unsubstituted was successfully synthesized from an intermediate material 2’-hydroxychalcone. The 2’-hydroxychalcone was synthesized by Claisen-Schmidt condensation method between o-hydroxyacetophenone and benzaldehyde using 4 different catalysts, namely KOH 60%, solid pellet of KOH-grinding technique, BF3-Et2O, and NaH in DMF. The KOH 60% was the best catalyst, giving the highest yield (57%). Afterward, the flavonol was synthesized in 1-stage oxidation cyclization of o-hydroxyacetophenone using Algar-Flynn-Oyamada (AFO) reaction, giving 76%. The flavonol total yield from 2’-hydroxychalcone was 43%. All synthesized products were characterized by their melting points and their spectra. The success of the synthesis flavonol opens the way to synthesis of useful flavonol derivatives such as quercetin and kaempferol.
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