Judul: Konsumsi pangan dan aktivitas fisik pada siswa/i SMAN 3 Bogor dengan status gizi normal dan lebih
Abstrak: The objective of this study was to analyze food consumption and physical activity among student of SMAN 3 Bogor with normal nutritional status and overweight/obese. The study using cross-sectional design. Samples of this study were eighty six students of tenth and eleventh grade were chosen purposively. There were two groups of samples, i.e. normal nutritional status and overweight/obese, each group consist of 43 students. Data were collected using questionnaire and direct measurement. The results showed that physical activities of normal nutritional status were higher significantly than overweight/obese. There were negative correlation between the amount of vegetables consumption (p<0.05; r=-0.213) and physical activities(p<0.05; r=-0.213), and nutritional status. These indicated that the higher amount of vegetables consumption and the more of physical activities tend to have normal nutritional status. That was positive correlation between genetic factor and nutritional status (IMT/U) (p<0.05; r=0.220). Based on linear regression analysis showed that factors affected nutritional status were physical activity and genetic (R2 = 0.069).
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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: 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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