Judul: Asupan Energi dan Zat Gizi, Status Gizi, dan Status Anemia pada Remaja Laki-laki dengan Kasus Narkoba di Lembaga Pemasyarakatan Anak Pria Kelas IIA Kota Tangerang
Abstrak: The objective of this study was to analyze the intake of energy and nutrients, nutritional status, and anemia status in adolescent boys with drug addiction at boys penitentiary class IIA Tangerang. This study used cross sectional design. Subjects of this study were adolescent boys with drug addiction. Sampling method used was purposive sampling and the number of subjects was 40 people. Descriptive analysis showed energy (35%) and protein (27.5%) sufficiency level were categorized as severe deficit. Iron sufficiency level was categorized as adequate (82.5%) and vitamin C sufficiency level was categorized as inadequate (100%). Most samples had normal nutritional status (85%) and anemia (57.5%).
Keyword: nutritional status, intake of nutrients, drugs, anemia, adolescent

Judul: Keragaan Konsumsi Pangan, Aktivitas Fisik dan Status Gizi Narapidana di Lembaga Pemasyarakatan Paledang Bogor
Abstrak: The purpose of this study was to observed food consumption, physical activity and prisoners’s nutritional status at Paledang Prison Bogor. The design of study was cross sectional, 85 samples was collected in October 2013. The sampling technique was purposive, data was collected by questionnaire using an interview structured. The results showed that prisoners adequacy level of energy, protein, vitamin A, and Fe were categorized normal, whereas adequacy level of vitamin C, calcium, and phosphor were categorized deficit. Physical activity levels of prisoners were low category, prisoners nutritional status decrease since they stayed in prison. Chi-Square correlation test results showed there were no correlation between energy intake and protein with nutritional status, and time of detention with nutritional status (p>0.05), however there was negative correlation between physical activity with nutritional status (p<0.05).
Keyword: nutritional status., prisoners, food consumption, physical activity

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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