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: Kasus Infeksi Cacing Parasit Pada Rusa Totol (Axis Axis) Di Kawasan Wisata Alam Kampung Batu Malakasari Kabupaten Bandung.
Abstrak: Rusa totol (Axis axis) termasuk kedalam satwa liar yang dilindungi di Indonesia. Upaya pelestarian rusa totol perlu dilakukan dengan memperhatikan kesehatan hewan tersebut. Penelitian ini dirancang untuk mempelajari prevalensi dan derajat infeksi cacing parasitik pada rusa totol di Kawasan Wisata Alam Kampung Batu Malakasari Kabupaten Bandung. Sampel feses diambil dua kali dalam setahun pada musim kemarau (19 ekor) dan musim hujan (20 ekor) untuk pemeriksaan mikroskopik menggunakan metode McMaster dan metode filtrasi bertingkat. Hasil penelitian menunjukkan bahwa dari 19 ekor rusa yang diperiksa pada musim kemarau, sebanyak 11 ekor rusa (57.89%) menderita kecacingan yang disebabkan oleh Toxocara vitulorum dan/atau Fasciola sp. Dua ekor rusa (10.53%) terinfeksi T. vitulorum dalam bentuk infeksi tunggal maupun campuran dengan Fasciola sp. Sebanyak 10 ekor rusa (52.63%) menderita fasciolosis akibat infeksi tunggal Fasciola sp. (9 ekor) maupun campuran dengan T. vitulorum (1 ekor). Kecacingan pada musim hujan disebabkan oleh infeksi Fasciola sp. yang ditemukan pada 5 ekor rusa (25%). Rataan jumlah telur per gram tinja (TTGT) Fasciola sp. pada musim kemarau sebanyak 0.70±0.35 dan musim hujan 1.30±1.79. Rataan jumlah telur Toxocara sp. pada musim kemarau sebanyak 350.00±70.71. Tingkat prevalensi Fasciola sp. tertinggi ditemukan pada rusa totol betina di musim kemarau (60%) dan musim hujan (27.3%), sedangkan tingkat prevalensi Toxocara sp. tertinggi ditemukan pada rusa totol jantan (11.1%) di musim kemarau. Infeksi cacing pada rusa totol di Kawasan Wisata Alam Kampung Batu Malakasari Kabupaten Bandung termasuk dalam kategori infeksi ringan.
Keyword: Axis axis, Fasciola sp, Toxocara sp, Prevalensi, Derajat Infeksi

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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