Judul: Studi Pertumbuhan Kepiting Bakau (Scylla serrata Forskal, 1997) di Perairan Karangsong, Kabupaten Indramayu, Provinsi Jawa Barat.
Abstrak: Scylla serrata is one of dominant catches in Karangsong water using bubu. High continously catch on activity could reduce on number of the mud crab population. This study was conducted in Juni-September 2013. Crab sampling was conducted in Karangsong water each 1 month. Length frequency distribution of male mud crab ranged between 60-138 mm, while females between 74-139 mm. Crab’s growth patterns in water of Karangsong is negative allometric. Through the analysis of growth parameter estimation, can be obtained K = − ln (􀜾����), L∞ = 􀯔���� 􀬵����􀬿����􀯕����, and t0 for mud crab males and females are respectively, K equal to 0,39 and 0,42 per month, L∞ equal to 157.35 and 147.99 mm, with t0 - 0,26 and -0,24 months
Keyword: Growth Parameter, Indramayu, water of Karangsong, Giant Mud Crab (Scylla serrata)

Judul: Karakteristik habitat dan potensi kepiting bakau (Scylla serrata, S.transquaberica, dan S.olivacea) di Hutan Mangrove Cibako, Sancang Kabupaten Garut Jawa Barat
Abstrak: The research was conducted in August - November 2011. The site contains six stations, each station in three zones. Station 1 and 2 was placed in zona A where zone A in the front area of mangrove forest. Station 3 and 4 was placed in zone B that location in the middle of mangrove forests. Station5 and 6 was placed in zone B where location in behind the mangrove forest. This study aims to obtain data and information on the habitat characteristics and potency of mud crab based on the existence of species, abundance, and size distribution. The method used was a survey. Observations of habitat characteristics performed in-situ by the method of sampling transect line plot. Cluster evaluation of habitat characteristic used cluster analysis. Analysis of habitat characteristics with potency of mud crab used correspondence analysis. The results showed that the parameters of habitat 1 and 2 had been similarity, and this was classified as groups of zone A. The similarity of parameters in station 3 and 4 were classified as group of Zone B, and the similarity of parameters in stations 5 and 6 were classified as group of zone C. S.serrata dominated in zona A where the substrat were mud with range of salinity between 24 – 30 ppt, totaled 73 ind. S.tanquaberica dominated in zone B where the substrat were mud with range of salinity between 22 – 25 ppt, totaled 94 ind. S.olivacea dominated in zone C where the substrat were clay with range of salinity between 18 – 23 ppt, totaled 45 ind. The abundance of mud crabs were in dark moon, where totaled zona A was 57 ind, zone B was 68 ind, and zone C was 32 ind. Mud crabs had possess of negative phototactic, because the habit of mud crab often refuge and hiding on a substrate that was not exposed to light directly. The high density of mangroves were found in zona A and B. which Third of mud crabs associated with mangrove that had density so higher. The average of litter weight as source of food for macrozoobentos, each which of was 200.72 g and 204.83 g. The average of macrozoobentos abundance, each which of was 13 ind/m2 dan 17 ind/m2 . Therefore, mud crabs would interest to settle in zone that had abundance of macrozoobentos as source of food.
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Judul: Prenilasi Senyawa β-Diketon sebagai Prekursor 3-Prenilflavon
Abstrak: One group of flavonoids that has not been commonly synthesized is 3- prenylflavone. The main objective of this experiment was to synthesize precursor of 3-prenylflavone. Firstly, β-diketone was synthesized via 4 steps from phenol as starting compound with total yield of 24%. Prenylation of β-diketone with prenyl bromide and K2CO3 base produced 4 fractions which were separated by using preparative thin layer chromatography (PTLC) with n-hexane:EtOAc (8:2) as the eluent. Fraction with Rf = 0.80 was further separated by using preparative PTLC with n-hexane:EtOAc (99:1) as the eluent. Two fractions were obtained with Rf = 0.38 and 0.42. The first fraction has been characterized as diprenylated β-diketone with 49% yield. Application of protecting group on the phenolic OH group in β- diketone are needed to obtain monoprenylated β-diketone which can be further cyclized into 3-prenylflavone
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