Judul: Penampilan reproduksi kambing boer (Studi kasus di Pusat Bioteknologi JPHPT Keningau, Sabah, Malaysia)
Abstrak: The aim of this research was to study the management of Boer goat handling, to identify the impacts that often risen in Boer goat handling and search for solution and to determine the increased appearance of Boer goat reproduction for population. Population data that is obtained in 2008, 2009 and 2010 amounted to 108, 179 and 116 goats respectively. Birth data for the three years respectively was 19, 60 and 56 goatling with their mortality data by 4, 14 and 19 goats. The results of this study showed that the method of goat breeding is still used mating and artificial insemination (AI) was introduced in 2011. Reproductive problems that arise at the center is the goats who gave birth of goats, only first/second goatling would be nursed and the other goatling will be ignored. The highest case of disease that infected the goat was Strongylosis (29.5%), Meliodiosis (28.7%), Coccidiosis (22.4%) and Pasteurellosis (12.7%) respectively.
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Judul: Penampilan Reproduksi Kambing Cross Boer (Jawarandu-Boer) “Studi Kasus di PT. Widodo Makmur Perkasa, Propinsi Lampung”
Abstrak: This case study aimed at knowing the management and problems that often in the maintenance of the Cross Boer goat, identify the level of the precnancy in the natural breeding and artificial insemination, and to know the appearance of the Cross Boer goat reproduction. This study was carried on November 2007 until July 2008, based on the method survey descriptive with the primary data collection through the interview from several staff in PT Widodo Makmur Perkasa. The other data was collect from the available data in PT Widodo Makmur Perkasa. The data that was received afterwards was analysed qualitatively. The observation showed that level success of the Conseption Rate value (CR) or the level success of the reproduction by means of being natural breeding was higher (83%) compared with the Artificial Insemination method (70%). The Service per Conseption (S/C) of i natural breeding is 1,2 and the Artificial Insemination is 1,4. This data showed that S/C of Artificial Insemination is higher than Natural Breeding.
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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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