Judul: Pengetahuan Gizi, Konsumsi Pangan Sumber Serat dan Aktivitas Fisik pada Siswa Sekolah Dasar Berstatus Gizi Lebih di Kota Bogor.
Abstrak: Tujuan dari penelitian ini adalah menganalisis pengetahuan gizi, konsumsi pangan sumber serat dan aktivitas fisik pada siswa sekolah dasar berstatus gizi lebih di Kota Bogor. Desain penelitian yang digunakan adalah cross sectional study. Penelitian dilakukan di 3 Sekolah Dasar Islam Terpadu (SDIT) di Bogor. Contoh dipilih secara purposif sebanyak 107 siswa (7 siswa overweight, 70 siswa obese, 30 siswa severe obese) kelas V dan VI. Rata-rata nilai pengetahuan gizi contoh 68.4±14.8 dan sebagian besar berkategori sedang (59.8%). Rata-rata asupan serat contoh 5.9±1.8 g dan sebagian besar berkategori kurang (99.1%). Rata-rata nilai PAL contoh adalah 1.47±0.19 dan sekitar separuh aktivitas fisik contoh berkategori ringan. Hasil penelitian menunjukkan adanya hubungan signifikan antara usia dengan status gizi, aktivitas fisik dengan status gizi, usia dengan pengetahuan gizi, pengetahuan gizi (aspek makanan sehat) dengan asupan serat dan pengetahuan gizi (aspek gizi lebih) dengan asupan serat.
Keyword: aktivitas fisik, gizi lebih, konsumsi pangan sumber serat, pengetahuan gizi

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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