Judul: Perilaku Rusa Timor (Rusa timorensis de Blainville, 1822) Betina di Penangkaran Akibat Pemberian Tabat Barito (Ficus deltiodea Jack)
Abstrak: Timor deer is one of deer species which potential to be developed. Captivity is one of timor deer utilization which aim to maintain the population of timor deer as protected species. However, there are various issues related to its reproduction so that reproductive technology is required to improve female timor deer reproduction by stimulating sexual desire of female timor deer using natural materials that are aphrodisiac, one of them is tabat barito. The aim of this research is to determine the influence of giving tabat barito with various doses against daily activity and sexual behavior of female timor deer. There are 4 tabat barito doses which are given for 28 days. The doses are 0 mg, 4000 mg, 5000 mg and 6000 mg. The result of this research indicates that different dose which given not significantly influence the daily activity and sexual behavior. However, the 6000 mg dose can stimulate female deer estrus so copulation happened.
Keyword: tabat barito., sexual behavior, female timor deer, captivity

Judul: Tanggap Rusa Timor (Rusa timorensis de Blainville, 1822) Terhadap Pemelihara Baru di Penangkaran Rusa IPB Darmaga
Abstrak: Timor deer is one of the protected animal and have been captived many times as an effort to increase the population. One of the success factor in captivity is the deer’s health which is formed by adaptation process to the breeding place, the feed and the keepers. The objective of this study was to identify the response activities of the Timor deer to the new keeper. The given treatment were the new keeper with the staple feed, additional feed and cleaning cage. Timor deer that was given the treatment differentiated based on gender and age, which are the old female deer, adult male deer, adult female deer and a calf. Data were analyzed by quantitative descriptive analysis. All the deers which already being observed did not show any changes in the response activity to the new keeper who gave the grass as a feed. Supplying an additional feed by the new keeper causing the deers stayed away unless the individual adult male deer. The cleaning cage treatment by the new keeper had an influence of changing the response activity all the deers that being observed.
Keyword: timor deer, response activity, new keeper, Adaption

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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