Judul: Pengetahuan Gizi, Aktivitas Fisik, Konsumsi Snack Dan Pangan Lainnya, Pada Murid Sd Bina Insani Bogor Yang Berstatus Gizi Normal Dan Gemuk
Abstrak: Childhood obesity is increases rapidly in developing country. It’s has important short-term and long-term medical consequences also psychosocial consequences. The objective of the research is to analyze nutritional knowledge, physical activity, snack habit, in normal and overweight of Bina Insani elementary students at Bogor. The cross sectional design was used in this study to elaborate nutritional knowledge, snack habit, and physical activity in normal and overweight students. The total number of 80 students sample was chosen randomly. It consists of 40 students sample with normal nutritional status and 40 students sample with overweight nutritional status. Primary data consisted of physical activity recall (1x24 hours), food consumption recall (2x24 hours), anthropometry data (weight and height), social-economy’s sample condition, food habit, and snack habit using Food Frequency Questionnaire (FFQ). Secondary data were included data of Bina Insani Elementary School. The result showed no relation between level education and wage of parent, nutritional knowledge level, nutritional attitude, snack habit and physical activity with nutritional status of sample. The average energy adequacy level according to WNPG (2004) respectively 82,2% in normal sample and 73,6% in overweight sample.
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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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