Judul: Isolasi Bakteri Epibiotik Penghasil Senyawa Antibakteri dari Permukaan Karang
Abstrak: Marine bacteria that live on the surface of other organisms (epibiotic bacteria) such as marine algae and invertebrates have shown a high percentage to produce bioactive metabolites and sugges as a potential new source of novel antibacterial products.
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Judul: Penapisan Bakteri Penghasil Senyawa Antimikrob Asal Spons Laut
Abstrak: Sponges are invertebrate found on coral reef ecosystems. Sponges produce many bioactive compounds as a result of secondary metabolites. The bioactive compounds is produced by microorganisms in the presence of sponges tissue as symbionts. Bioactive compounds are potential to be used in the biomedical and pharmaceutical fields, one of them is antimicrobial. This study aims to screen bacteria from marine sponges of Bira Island, Thousand Islands, DKI Jakarta Province, namely Callyspongia sp. and Petrosia sp. that could potentially produce antimicrobial compounds. The results of isolation using six types of medium showed a total of 147 bacterial isolates were isolated from the sponge type Callyspongia sp. and Petrosia sp. The suitable mediums used to isolate bacteria associated with sponge to obtain various types of bacterial colonies, were medium Nutrient Agar and Zobel Marine Agar. The results of the screening obtained from 26 isolates (13%) could produce antimicrobial compound. Seven isolates (5%) of them were able to inhibit five bacterial targets, i.e. Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus subtilis, Escherichia coli (ATCC 8739), and Enterophatogenic Escherichia coli (EPEC). The isolates were CAL36, CAL42, PTR8, PTR21, PTR40, PTR41 and PTR47. Gram staining performed on 26 bacterial isolates showed all of them belong to the group of gram-negative bacteria. Six isolates among 26 isolates were positive hemolysis derived from the sponge type Callyspongia sp., namely CAL22, CAL24, CAL25, CAL26, CAL34, and CAL49.
Keyword: Bogor Agricultural University (IPB), sponge Petrosia sp., sponge Callyspongia sp, hemolysis, Bira Island, antimicrobial compound

Judul: Scheduling of the South American Zone of 2014 FIFA World Cup Qualification.
Abstrak: Dalam kompetisi sepak bola terdapat perangkat-perangkat yang penting dalam penyelenggaraannya. Salah satunya adalah jadwal pertandingan. Penyusunan jadwal pertandingan harus dilakukan dengan hati-hati dan penuh dengan pertimbangan agar pertandingan sepak bola dapat berjalan dengan lancar. Babak kualifikasi Piala Dunia FIFA 2014 Zona Amerika Selatan melibatkan 10 tim nasional yang tergabung dalam satu grup dengan setiap negara memiliki satu stadion yang digunakan dalam setiap periode waktu. Tim-tim dalam zona ini dikelompokkan berdasarkan karakteristik yang dimiliki yaitu tim kuat, tim paling populer, tim populer, dan tim tidak populer. Tujuan karya tulis ini ialah membuat jadwal pertandingan yang memenuhi beberapa preferensi, seperti setiap tim harus bertanding dua kali dengan tim lain sebagai tuan rumah dan tamu di setiap paruh kompetisi, pertandingan klasik antara tim kuat dan popular harus dimainkan di pekan ke-3, 5, dan 7, serta setiap tim sebanyak-banyaknya bertanding dua kali berturut-turut sebagai tuan rumah ataukah tamu. Masalah penjadwalan ini dimodelkan dalam
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