Judul: Hubungan antara Asupan Vitamin dan Mineral dengan Morbiditas pada Siswa di SMPN 5 Bogor dan SMPN 2 Cibinong
Abstrak: The aim of this study was to study the correlation between intake of vitamin and mineral and morbidity of Junior High School students. The study using cross-sectional study design. It was conducted on November 2011. Total sample were 102 student from 8th grade of SMPN 5 Bogor and SMPN 2 Cibinong. The result showed that there were a significant negative correlation between the level of energy, protein and zinc sufficiency and nutritional status. While the test result of vitamin A and C sufficiency level and nutritional status showed that there were no correlation between them. The result of Pearson correlation test showed that there were no correlation between the of level energy, protein, vitamin A, Vitamin C, zinc, nutritional status, and morbidity.
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Judul: Konsumsi Suplemen Antioksidan serta Kaitannya dengan Pengetahuan Gizi, Aktivitas Fisik dan Morbiditas Siswa SMPN 1 Leuwiliang dan SMPN 4 Bogor
Abstrak: The purpose of this research was to analyze antioxidant supplement consumption and its correlation with the nutrition knowledge, physical activity and morbidity of Junior High School Students in Bogor. The design of this study was cross-sectional. This research was conducted from November until December 2011 in SMPN 1 Leuwiliang and SMPN 4 Bogor. Data obtained was analysis using independent sample t test to compare data between the two schools and Rank Spearman and Pearson to correlate two variables. Based on analysis using independent sample t test, there were significant differences between two sample groups on knowledge of antioxidant, but there was no significant difference between two sample groups on level of energy, protein, vitamin C and vitamin E sufficiency, antioxidant supplement consumption, physical activity and morbidity. Statistic analysis showed that there were significant correlation between two sample groups on antioxidant supplement consumption and knowledge of antioxidant (p<0.05, r = 0.195), antioxidant supplement consumption and physical activity (p<0.05, r= 0.175). But, there was no significant correlation between two sample groups on antioxidant supplement consumption and morbidity.
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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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