Judul: Hubungan konsumsi pangan, kebiasaan latihan fisik dan kadar hemoglobin pada remaja putri di SMP Negeri 27 Kelurahan Sumur Batu Kota Bekasi
Abstrak: The objective of the research was to analyze the correlation of food consumption, physical exercise habit and their effects on haemoglobin levels of female students at SMPN 27 Bekasi. This research used cross sectional study. The number of samples were 90 female students aged 13–15 years old. This research used food semiquantitative frequency questionnaire and anaemia status with haemoglobin level. A large number of students were in normal anaemia status (84.5%) while the rest was anaemia (15.5%). Average energy consumption was 1506±532 calories. Average protein consumption was 60.6±35.5 g. Average Vitamin A consumption was 741.6±698.0 RE. Average Vitamin C consumption was 68.0±67.9 g. Average iron consumption was 22.3±16.9 mg. Most students showed non regular excercise. The frequency of excercise was once a week, with excercising duration of 30 to 60 minutes. Spearman‟s correlation showed that there was a relationship between the consumption of mangoes with haemoglobin levels with negative correlation value (p<0.05). Spearman‟s correlation showed that there wasn‟t a relationship between the exercising habits and haemoglobin levels p(>0.05).
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Judul: Hubungan perilaku hidup bersih dan sehat, konsumsi pangan, status anemia dan prestasi belajar pada remaja putri smpn 27 di Kelurahan Sumur Batu Bantar Gebang Bekasi
Abstrak: This study was aimed to analyze the relationship between clean and healthy behaviour, food consumption, anaemia status and learning achievement of female students of SMPN 27 Sumur Batu Village Bantar Gebang Bekasi. This research was a cross sectional study. The number of samples were 90 female students aged 13-15 years old. This research used semiquantitative food frequency questionnaire and anaemia status with hemoglobin level. The result indicated that clean and healthy behaviour of the female was in good category (81.1%). A large number of female were in normal anaemia status (84.5%) while the rest was anaemia (15.5%). Majority of the female had normal nutritional status (73.3%). The food habit was good (57.8%). Based on semiquantitative food consumption frequency, there was still lack of food consumption in the female. Largely, learning achievement of the female students classified in good category were 59 students (66%). Spearman’s correlation showed there’s no relationship between clean and healthy behaviour, food consumption, anaemia status and learning achievement (p>0.05).
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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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