Judul: Perubahan tingkat seluler otot jantung Monyet Ekor Panjang (Macaca fascicularis) jantan dewasa obesitas dengan intervensi nikotin
Abstrak: Obesitas telah menjadi masalah kesehatan yang serius di banyak kota besar di dunia. Masalah kesehatan ini dapat memicu terjadinya masalah-maslah kesehatan penting, seperti penyakit kardiovaskular, diabetes mellitus, stroke, kanker, sleep apnea, dan berbagai sindrom metabolik. Tujuan penelitian ini adalah untuk mendapatkan informasi perubahan tingkat seluler otot jantung pada monyet ekor panjang (Macaca fascicularis) yang obesitas secara alami maupun monyet obesitas induksi diet tinggi energi. Monyet-monyet ini terdiri dari 11 monyet jantan obesitas, yang terdiri dari monyet obesitas alami (n=2) sebagai kontrol dan tiga kelompok monyet dengan pakan obesitogenik selama 15 bulan dan nikotin cair dosis rendah (0,75mg/kg BB) per oral selama 3 bulan berikutnya (n=9). Perubahan tingkat seluler yg diamati sebagai parameter adalah degenerasi hidropik, degenerasi lemak, dan hipertrofi seluler. Hasil dari penelitian ini menunjukkan bahwa kelompok A yang diberikan pakan 10% tallow memiliki perubahan tingkat seluler dengan kaparahan paling tinggi, kelompok pakan B yang diberikan 6% tallow dan 10% kuning telur memiliki keparahan seluler tingkat menengah, dan kelompok C yang diberikan komersial monkey chow memiliki perubahan tingkat seluler dengan keparahan terendah di antara semua kelompok. Hasil ini menunjukkan bahwa perubahan tingkat seluler pada sel-sel otot jantung dipengaruhi oleh pakan dan ditentukan oleh kandungan lemak dalam pakan tersebut dan juga menunjukkan adanya pengaruh hambat dari nikotin dosis rendah terhadap perkembangan perubahan seluler jantung monyet.
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, Cellular alteration, Macaca fascicularis, Nicotine, Obese

Judul: Analisis Bobot Badan, Indeks Massa Tubuh, serta Profil Lipid (Total Kolesterol dan HDL) Pada Monyet Ekor Panjang (Macaca fascicularis) dengan Diet Tinggi Lemak dan Intervensi Nikotin.
Abstrak: The aim of this study was to obtain information of body weight, BMI (Body Mass Index), lipid profile especially cholesterol total and HDL cholesterol related to intervention of nicotine. This research consisted of 15 long tailed macaques, divided into three groups based on the types of diet. There were diet type A with energy derived from tallow, diet type B with energy derived from tallow and yolk eggs, and diet type C with commercial diet of Monkey chow. Observation was done before and during the intervention of low dose nicotine with dosage 0.75 mg/kg BB/12 hours per oral. The results of blood lipid analysis showed that there was a significant increase in cholesterol level total during three months of nicotine intervention, especially in group B. However, we found HDL level (P<0.05) was increased in the second month of diet type B and in the third month of diet type A and C. There was no significant decrease in body weight and BMI (P>0.05) during the period of nicotine intervention.
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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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