Judul: Penyelenggaraan Makanan, Daya Terima, dan Konsumsi Pangan Lansia di Panti Sosial Tresna Werdha Salam Sejahtera Bogor
Abstrak: The objective of this research is study the food service, the acceptance of food and food consumption of the elderly in Panti Sosial Tresna Werdha Salam Sejahtera Bogor. The research used a cross sectional study design that was held in November to Desember 2011. The number of sample in this research was taken from 32 elderly. The results showed that the system of the food service in Panti Sosial Tresna Werdha Salam Sejahtera Bogor were good enough. The cycles of the meal is seven days with four times meal, each contains three times main course and one time snack food. Most of them like the meal. Based on the correlation test by Spearman, there were a significant (p<0,05) relationship between male samples and food acceptance, but there were no significant (p>0,05) relationship between food acceptance and nutrients adequacy level.
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Judul: Penyelenggaraan Makanan, Status Gizi dan Kesehatan Lansia di Rumah Perlindungan Tresna Werdha Bogor
Abstrak: The objectives of this study were to determine the nutritional status, health status, consumption pattern and food acceptance of the elderly at Rumah Perlindungan Sosial Tresna Werdha Bogor. This study used cross sectional design. Research was done in October 2013. The subjects of this study were 34 elderly people with age over 60 years. Results showed that the average energy and protein consumption in elderly were 1454 kkal and 41.7 g. Food acceptance of elderly were adequate for taste of food (52.9%) as well as the portion of food (61.8%). The adequacy level of energy and protein mostly were deficit. Most of the elderly (41.2%) had normal nutritional status. The majority of the elderly (67.6%) were suffering from hypertension with mild hypertension. Correlation test results showed no significant relationship (p>0.05) between the adequacy level of energy and nutrient with nutritional status. Pearson correlation test results showed no significant relationship between blood preasure (p>0.05) and nutritional status.
Keyword: health status, nutritional status, food acceptance, consumption patterns, elderly

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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