Judul: Kandungan Beta Karoten  dan Nilai Gizi Telur Asin dari Itik yang Mendapat Pakan Limbah Udang
Abstrak: Egg was animal food product which has excelent nutrient. Duck egg nutrition composition was influenced by feed consumed. Shrimp waste could be used as feed for duck because it has good nutrient composition and cheaper compared to fish flour. Egg preservation by salted that allowed penetration salt solution could change nutrition composition in the egg. Duck egg was used as raw material for salted egg processing because it has big pore at the shell allow then to absorb water and suitable for produce salted egg. The aim of this research was to study the effect of feeding duck by shrimp waste and preservation of egg by brinning salted pickled on nutrition and beta caroten of the salted egg. The variable determinant were values of water, ash, protein, fiber, fat, calsium, and beta carotene contained in the eggs. The data were analyzed by variance showed that shrimp waste influenced values of ash, protein, fiber, fat, and calsium. Egg salted processing influenced values of water, ash, protein, fiber, and fat. Shrimp waste in feed resulted yolk has orange colour.
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Judul: Sifat fisik, kimia dan organoleptik telur asin dengan metode tekanan serta umur  telur yang berbeda
Abstrak: One of the main product from duck is egg. The duck egg is very suitable to be processed into salted egg. The salted egg is one method of egg's pickling. The principal of making salty egg is salt ionizing process of NaCl in later mix which then diffuse into the egg through it's shell. In this study the salting was done with the pressure method (0, 1.5, and 3.0 bar) with different egg age (0, 7, and 14 day). Parameters measured include the moisture content, NaCl content, egg yolk's gritty texture and organoleptic test. Data obtained for physic, chemical characteristic can not be analysed by ANOVA, because passed the assumtion test, so the data was analysed with the descriptive analysis. Data for Hedonic Test, was analysed with Kruskal-Wallis. The result of this showed the higher pressure and older age also increase salt content in both egg white and yolk, and the grittiness of yolk. Salt content of both the egg white and yolk was highest on age 14 days with given pressure (3 bar). The panelist respons of organoleptic test towords general apperance of the salty eggs was significant. Respon towords saltiness of egg white and yolk grittiness was not significant.
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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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