Judul: Pengamatan fenotip dan pendugaan genotip warna, pola warna dan tipe bulu pada Hamster Syria (Mesocricetus auratus
Abstrak: Hamster Syria (Mesocricetus auratus) merupakan salah satu ternak yang dikenal sebagai hewan percobaan. Seiring dengan perkembangan zaman, saat ini hamster juga dikenal sebagai hewan peliharaan (pet animal). Penelitian ini bertujuan untuk mengamati dan menduga genotip warna, pola warna dan tipe bulu pada hamster jenis Syria (Mesocricetus auratus) dan faktor-faktor genetik yang mempengaruhi ragam warna dan bulu pada hamster. Selain itu, penelitian ini juga bertujuan untuk memberikan informasi dasar mengenai warna, pola warna, tipe bulu dan faktor-faktor genetik yang mempengaruhinya kepada penggemar hamster. Penelitian ini dilaksanakan di kandang Laboratorium Lapang Pemuliaan dan Genetika (LPG), Departemen Ilmu Produksi dan Teknologi Peternakan dan kandang uji Laboratorium Ternak Daging dan Kerja (LTDK), Departemen Ilmu Nutrisi dan Teknologi Pakan, Fakultas Petemakan, lnstitut Pertanian Bogor, Bogor. Penelitian lapang dilaksanakan dari bulan September bingga bulan November 2006; pengolahan data dilaksanakan selama satu bulan yaitu pada bulan Desember 2006; dengan menggunakan 63 ekor hamster yang terdiri atas 40 ekor jantan dan 23 ekor betina.
Keyword: hamster Syria (Mesocricetus auratus), genotip, pola wama

Judul: Karakteristik ukuran dan bentuk hamster syria (Mesocritus auratus)
Abstrak: Syrian hamster (Mesocricetus auratus) is a laboratory animal and pet animal due to their attractive physical shape. Genetic variance of Syrian hamster need to be conserved through identification of body sceleton maesurement; this measurement consisted of measurement of body length, chest width, hip width and canon circumference. The identification can help the hamster lovers to obtain the desirable sizeof their Syrian hamster. This experiment was conducted to determine the size and shape scores body of Syrian hamster, both for male and female principal Component Analysis.
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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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