Judul: Daily Activities and Welfare Rate Agile Gibbon (Hylobates agilis) at Schmutzer Primates Center, Ragunan Zoo
Abstrak: Keberadaan ungko sebagai salah satu jenis satwa yang dilindungi semakin menurun populasinya akibat perburuan dan hilangnya habitat. Salah satu upaya konservasi ungko dilakukan secara ex-situ di kebun binatang. Penelitian ini bertujuan untuk mengidentifikasi aktivitas harian, mengidentifikasi manajemen pemeliharaan dan mengukur tingkat kesejahteraan ungko. Metode yang digunakan meliputi observasi langsung dan wawancara kepada pengelola serta studi literatur. Hasil penelitian menunjukkan aktivitas yang paling banyak dilakukan oleh ungko jantan yaitu istirahat sebesar 29,33%, bergerak 25,33%, menelisik 20%, makan 14% dan main 11,33%. Sedangkan ungko betina lebih banyak melakukan aktivitas istirahat dengan persentase sebesar 31,69% yang diikuti dengan aktivitas menelisik 29,23%, bergerak 21,31%, makan 11,20% dan bermain 6,56%. Ukuran kandang ungko yang ada di PPS telah memenuhi standar NSW Agriculture sehingga ungko dapat bebas bergerak. Pakan yang diberikan telah memenuhi kebutuhan ungko. Pengelolaan kesejahteraan ungko di PPS dilakukan dengan sangat baik. Pencapaian implementasi kesejahteraan ungko di PPS memiliki nilai sebesar 81,50 yang termasuk dalam kategori sangat baik.
Keyword: agile gibbon, daily activities, maintenance management, welfare rate

Judul: Aktivitas Makan dan Status Gizi Owa Jawa (Hylobates moloch) di Pusat Primata Schmutzer Taman Margasatwa Ragunan Jakarta
Abstrak: Hylobates moloch is endemic Indonesian primate which live in Java. The population of javan gibbon is declining because of the loss of feeds due to the degradation of habitats. This research aims to identify feeding activities, type of feeds, and nutrient status of javan gibbon (Hylobates moloch) in Schmutzer Primate Centre Ragunan Zoo Jakarta. Feeding activities observation was performed using focal animal sampling method which done in the same time with feed palatability. Feeds were given once a day which consist of fruits, vegetables, eggs, and bread. Highest feeding activities was recorded in the feeding given by zoo keeper. Biting and swallowing are the highest was shown Kecil (juvenile) feeding activities of first cage (22.00%). Highest feeding activity in second cage made by Rano (male) was chewing (21.43%) and in the third cage was carried out by Eneng (female) which were biting, chewing, and swallowing each 23.31%. Based on the palatability rank in the three cages, kumak (Lactuca indica) and banana (Musa paradisiaca) was categorized as the most favored feed. Based on the nutrient status, it was obtained that dry materials were consumed 683,83 to 1099,03 g/cage/day, protein consumption 13,13 to 19,37 g/cage/day, fat consumption 4,58 to 8,51 g/cage/day, and energy consumption from 594,64 to 1154,50 kal/cage/day.
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Judul: Persamaan Korteweg-de Vries Orde Tinggi untuk Menggambarkan Gerak Gelombang Internal
Abstrak: The ocean can be considered of layers of fluid that each layer has a constant density. Internal waves are waves occur in the interface of every'two layers with different density. Because it occures underneath the surface of the ocean, it is invisible. One of internal waves is internal solitary waves. One of formulation that can describe intemal waves movement is KdV equation. KdV equation is derived from governing equations of ideal fluid in Lagrange formulation using asymptotic method. On this thesis, KdV equation is derived in higher order and then its solution is derived by using internal solitary waves assumption. An example of a two-layer fluid is a case will be used. By using Mathematica6 software, for this case will be obtained the coefficients in lower and higher order explicitly and the corresponding between coefficients and relative lower layer depths and fluid depths, the corresponding between coefficients and relative densities, and also observed the different between solitary waves in lower and higher order.
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