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: Keragaan status gizi, konsumsi pangan, tingkat kecukupan energi dan zat gizi anak di sekolah dasar dengan penyelenggaraan makanan
Abstrak: Children were source of potentials and next fighter of nation’s ideal. Thus, they need to get chance to normally growth and develop as wide as possible (BPS 2001). This research was aimed to obtain information about performance of nutritional status, food consumption, contribution of food in school, and also sufficiency level of energy and nutrients of children of Sekolah Alam Bogor and SDIT Insantama in 2010. Data for this research was taken from research entitled “Analysis of Food Management in Elementary School and Menu Quality of Student in School” (Reisi Nurdiani 2010). Sekolah Alam Bogor has modus of age distribution at 11 years (43.48%) and SDIT Insantama at 10 years (40.00%). Age distribution of both schools wasn’t significantly (p>0.05) different. Percentages of sample in Sekolah Alam Bogor were 69.6% for male and 30.4 for female, while for SDIT Insantama were 65.7% for male and 34.3% for female. There were no significant (p>0.05) difference of both schools based on sex. Samples of both schools have modus of normal nutritional status, were 43.5% at Sekolah Alam Bogor and 51.7% at SDIT Insantama. Nutritional status of both schools, for male, students in normal category was 43.8% for Sekolah Alam Bogor and 60.9% for SDIT Insantama; while for female, students in normal category was 42.9% for Sekolah Alam Bogor and 47.4% for SDIT Insantama. There were no significant (p>0.05) different of both schools based on nutritional status. Based on classification of food type, grains and animal based food were dominated the diversity and total of consumption, while fruits was the least variety. Average consumption of energy, proteins, calcium and phosphorous of SDIT Insantama were higher than Sekolah Alam Bogor; nevertheless Sekolah Alam Bogor has higher average consumption of vitamin A, vitamin C and iron than SDIT Insantama. Based on sufficiency level, sufficiency of calcium, vitamin A and vitamin C of both school was significantly (p<0.05) different, while sufficiency of energy, protein, phosphorous and iron of both school wasn’t significantly (p>0.05) different. Contribution of energy and protein of food from school food service in both school were about 30% of average energy and protein requirement of elementary school children.
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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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