Judul: Bioecological of Mud Crabs (Scyllaspp.) in mangrove ekosistem of Subang Regency, West Java
Abstrak: The aim of the research was to collect data and information concerning population structure, reproduction performance, reproduction potency, evaluation of eyestalk ablation and distribution of mud crabs based on the characteristics of their environment habitat. The research was carried out since January 2005 to August 2006. Observation on the morphology and anatomy used descriptive method. The ecological aspect was done in situ using line plot transect method. In the meantime, the aspect of biological reproduction was carried out through a controlled seed experiment in pond and laboratory with treatment of eyestalk ablation. Exploration of eyestalk tissue of mud crabs was performed with the method of histochemistry to assure the success of ablation. The result showed that not only the morphology of different mud crab species but also the morphology and anatomy of crabs with different sexes. The mud crabs from different research stations indicated differences in terms of the population rate. The width of the carapace and minimum and maximum weight of mud crabs caught were different from one species to another.
Keyword: pupulation structure, reproduction performance, reproduction potency, distribution of mud crabs, West Java

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.
Keyword: 

Judul: berjudul Pelabelan Prima pada Graf Gurita (On) dengan Penambahan Simpul Duplikasi.
Abstrak: Setiap graf gurita adalah graf prima sedemikian sehingga pelabelan simpul pada graf gurita merupakan pelabelan simpul pada graf prima. Suatu Graf ( ( ) ( )) dapat dikatakan memiliki pelabelan simpul pada graf prima jika graf tersebut memenuhi fungsi bijektif ( ) { } dan untuk setiap sisi ( ( ) ( )) . Dalam karya ilmiah ini, akan ditunjukkan bahwa graf gurita memiliki pelabelan prima dan merumuskan graf gurita duplikasi dengan penambahan simpul dari simpul graf kipas ( ) graf gurita ( ), graf bintang ( ) graf gurita ( ), dan simpul utama pada graf gurita ( ) adalah graf prima dengan
Keyword: graf gurita, graf prima, pelabelan prima, penambahan simpul