Judul: Kontribusi Makanan Di Sekolah Dan Tingkat Kecukupan Energi Dan Zat Gizi Pada Anak Usia Sekolah Dasar Di Kota Bogor
Abstrak: The objective of this research was to know the contribution of school feeding and home feeding; and to know nutrient adequacy level elementary school children. cross sectional study design was used is in the research which was conducted by using from April to June 2009 in Aliya, Pertiwi, Baranangsiang and Kedung Badak 1 Elementary School Bogor. The samples of this research were 5 grade of elementary school students with and without school lunch program. The contribution of school feeding of samples with school lunch program were higher than samples without school lunch (p<0,05). The contribution of home feeding of samples with school lunch program were lower than samples without school lunch service (p<0,05). Adequacy level of energy, vitamin A and C of school with lunch services (p<0,05). The average level of protein, calcium, phosphor, and iron of samples with and without school lunch program were not different. These result elaborate that the lower contribution of feeding school of student without school lunch program was compensated by home feeding.
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Judul: Keragaan Status Gizi, Aktivitas Fisik, Konsumsi Pangan Serta Tingkat Kecukupan Energi Dan Zat Gizi Anak Sekolah Dasar Di Kota Bogor
Abstrak: The objective of this research was to understand nutritional status, physical activity, food consumption and sufficiency energy and nutrient level of elementary school children in Bogor. The research was conducted by using cross sectional study and simple random sampling design from April to July 2009 in 4 elementary School in Bogor that 2 private school (SDIT Aliya and SD Pertiwi) and 2 public school (SDN Baranang Siang and SD Kedung Badak 1). The samples of this research were all of fifth grade students from four elementary school students in Bogor. The result showed that nutritional status obesity and overweight sample in private school higher than sample in public school. Physical activity level (PAL) of sample in private school category sedentary and sample in public school category active. Energy expenditure of sample in public school was higher than private school. Sample in private school has higher energy, protein, vitamin A, vitamin C, calcium, iron and phosphor consumption than sample in public school. Adequacy level of energy, protein, vitamin A, vitamin C, calcium and phosphor of private school sample were also higher than public school, except for iron. Pearson Correlation Test shows that physical activity has significant correlation with the nutritional status.
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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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