Judul: Studi Perilaku dan Reproduksi Unta Berpunuk Dua (Camelus bactrianus) di Taman Safari Indonesia Cisarua Bogor.
Abstrak: Penelitian ini bertujuan untuk mempelajari perilaku dan reproduksi Unta Bactrian di lembaga konservasi ex-situ yaitu Taman Safari Indonesia (TSI) Cisarua Bogor. Penelitian ini dilakukan dengan mengamati perilaku Unta Bactrian dengan metode Observative dan Focal Animal Sampling untuk mendapatkan data perilaku dan mengumpulkan data sekunder untuk mendapatkan data reproduksi. Hasil penelitian perilaku menunjukan bahwa aktivitas berdiri dilakukan lebih lama pada pagi hari (94,6%) dibanding sore hari (73,3%), sedangkan aktivitas duduk dilakukan lebih banyak pada sore hari (26,7%) dibanding pagi hari (5,4%). Hasil penelitian reproduksi menunjukan pada bulan Januari 2017, ada dua generasi Unta Bactrian di Taman Safari Indonesia. Generasi pertama terdiri atas satu pejantan dan sepuluh betina. Sedangkan generasi kedua terdiri atas lima pejantan dan lima betina yang lahir di TSI Cisarua Bogor, dan hanya satu anakan yang lahir dari pasangan yang diketahui.
Keyword: Camelus bactrianus, perilaku, reproduksi, Taman Safari Indonesia

Judul: Studi Reproduksi Bekantan (Nasalis larvatus) Di Habitat Ex-Situ
Abstrak: This study aims to explore the reproductive bekantan (Nasalis larvatus) in ex-situ habitat was held at Taman Safari Indonesia. The method is carried out observations, interviews and processing secondary data on the age of sexual maturity, mating behavior and duration of gestation and lactation and playback support, factors as feed and caging. The results is female becoming adult at an average of 6 years old, and mating behavior will be seen by herself put the sullen facial expression. Then the female will approach the dominant male in the marriage. Length 7 months of pregnancy and lactation period of 1.5 years. These data are in accordance with the literature bekantan reproduction in their natural habitat. So the maintenance TSI as ex-situ habitat has also marked by the inability of animals classified as endangered in CITES Appendix I to adapt to and breed in habitats ex-situ.
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Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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