Judul: Molecular Identification of  Haemonchus contortus Species in Spotted Deer (Axis axis) Feces
Abstrak: Rusa totol (Axis axis) sebagai satwa yang dilindungi memiliki potensi untuk dibudidayakan dan dikembangkan guna memberikan nilai ekonomis. Pada umumnya rusa sering terserang penyakit endoparasit yang disebabkan oleh berbagai macam faktor seperti kontak langsung dengan hewan yang terinfeksi hingga penularan melalui pakan. Hewan yang terinfeksi endoparasit dapat mengalami malnutrisi, gangguan fisiologi, hingga kematian. Penelitian ini bertujuan mengidentifikasi spesies cacing nematoda yang berada di dalam rusa totol dengan metode molekuler. Identifikasi molekuler spesies nematoda yang terdapat dalam feses rusa dilakukan dengan melakukan pengoleksian feses, pemupukan feses, ekstraksi DNA, proses PCR, dan pembacaan pita melalui elektroforesis. Identifikasi dengan PCR menunjukkan adanya infeksi Haemonchus contortus yang terjadi pada rusa totol yang ditandai dengan keberhasilan amplifikasi pada sampel positif dan sampel feses rusa totol memiliki nilai pasang basa yang sama yaitu 260 bp.
Keyword: Feses, Haemonchus contortus, PCR, rusa

Judul: Kecacingan pada rusa totol (Axis axis) di halaman Istana Kepresidenan Bogor
Abstrak: Deer is one of prospective animals, the term used for animals with potential as a source of meat instead of cattles. The objective of this research was to determined helminth parasites of spotted deer (Axis axis) on Presidential Palace of Bogor. A total of 24 faecal samples were collected from a total population of 689 deers. The samples were examined by McMaster, floatation, and sedimentation methods for helminth eggs. Eggs were found in 2 samples from the total taken samples showed a contamination rate of 8.3%. Each positive samples gave different results, which were of Strongyloides and Toxocara genus. This rate of contamination with helminth eggs of spotted deer on Presidential Palace of Bogor is considered low.
Keyword: Toxocara, Strongyloides, Axis axis

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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