Judul: Status Nutrisi Mineral Rusa Totol (Axis axis) Di Lingkungan Istana Kepresidenan Bogor
Abstrak: Tujuan penelitian untuk mengevaluasi status mineral rusa totol di lingkungan Istana Kepresidenan Bogor dan melalui analisa status mineral (Ca, P, Fe, Mn, Zn, Cu dan Pb) di tanah, pakan dan rambut rusa. Rambut merupakan tempat terakumulasinya mineral terutama logam berat pada tubuh selain hati, ginjal, kuku dan jaringan adiposa. Analisis rambut dikoleksi dari 15 ekor rusa jantan yang dipilih secara acak dengan usia ±2.5 – 6 tahun. Tanah yang dikoleksi dari sepuluh titik, contoh rumput diperoleh melalui cuplikan dari beberapa titik lahan penggembalaan. Kadar mineral tanah, pakan dan rambut rusa di analisa menggunakan Atomic Absorption Spectrofotometry (AAS). Kadar mineral menunjukkan Ca dan P pada tanah sangat rendah, kadar mineral Fe dan Pb tinggi sedangkan mineral Mn, Zn dan Cu tanah dalam kisaran normal. Pada rumput lapang, kadar mineral Ca, P, Cu dan Zn tergolong rendah dan belum dapat memenuhi kebutuhan rusa, kadar mineral Fe dan Mn tinggi melebihi kebutuhan rusa totol. Mineral Ca, P, dan Cu dapat dipenuhi dari pakan konsentrat sedangkan Zn dapat dipenuhi melalui suplementasi mineral blok. Kadar mineral Pb rumput 0.94 ppm masih dalam batas normal. Kadar Mineral Ca, Fe dan Mn pada rambut rusa tergolong tinggi, namun kadar Zn dan Cu rambut rendah (P<0.01). Tingginya kadar Pb rambut diduga terjadi oleh akumulasi Pb dalam jangka waktu panjang., The research was to evaluate the mineral status of spotted deer in the Bogor Presidential Palace and through the analysis of mineral status (Ca, P, Fe, Mn, Zn, Cu and Pb) in soil, feed and deer hair. Hair is a place of accumulation of minerals, especially heavy metals in the body, apart from the liver, kidneys, nails and adipose tissue. Hair analysis was collected from 15 male deer that were randomLy selected with an age of ± 2.5 - 6 years. Soil is collected from ten points, grass samples obtained by sampling from several points of grazing land. Soil mineral content, forage and deer hair were analyzed using Atomic Absorption Spectrofotometry (AAS). The mineral content shows that Ca and P in the soil are very low, the levels of Fe and Pb minerals are high, while the minerals Mn, Zn and Cu are in the normal range. In field grass, the mineral content of Ca, P, Cu and Zn is low and has not been able require mineral needed of deer, high levels of Fe and Mn minerals exceed the needs of spotted deer. Minerals Ca, P, and Cu can be fulfilled from concentrate feed while Zn can be fulfilled through mineral block supplementation. The grass Pb mineral content of 0.94 ppm is still within normal limits. Mineral Ca, Fe and Mn levels in deer hair were high, but Zn and Cu levels in hair were low (P <0.01). The high level of hair lead is thought to be caused by long-term Pb accumulation.
Keyword: Bogor Palace, Mineral status, spotted deer

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.
Keyword: