Judul: Pengaruh Penyuluhan Gizi Terhadap Pengetahuan, Konsumsi Pangan dan Status Gizi Siswa Obesitas di SMPN 5 Bogor
Abstrak: The purpose of this study was to analyze nutritition counseling effect to increased student knowledge, food consumption and nutritional status for obesity students in SMPN 5 Bogor. Design of study which used were pre-experimental with one group pretest-posttest. Sample were taken purposively based on inclusion criteria, 34samples as the result. Nutrition counseling conducted for 4 times in 4 weeks. The topics of nutrition counseling were introduction of nutrient, food varians, and balanced nutrition, healthy snack, ideal body weight and physical activity. The result of nutrition counseling had a significant influence on student nutrition knowledge (p = 0.002, p<0.05), energy intake (p = 0.00, p <0.05), protein intake (p = 0.00, p< 0.05), fat intake (p = 0.01, p <0.05), and carbohydrate intake (p = 0.002, p<0.05), whereas no nutrition counseling had a significant influence on physical activity and nutritional status (p> 0.05).
Keyword: obesity., nutrition knowledge, food consumption, counseling nutrition

Judul: Kebiasaan Konsumsi Pangan Sumber Gula dan Sumber Lemak serta Pengaruhnya terhadap Status Gizi Siswa SMA Negeri 5 Bogor
Abstrak: Kebiasan makan remaja banyak mengonsumsi gula dan lemak dapat memicu masalah gizi lebih. Tujuan dari penelitian ini adalah untuk menganalisis hubungan kebiasaan konsumsi pangan sumber gula dan sumber lemak serta pengaruhnya terhadap status gizi siswa SMA Negeri 5 Bogor. Desain penelitian ini adalah cross-sectional study dan menggunakan metode purposive sampling. Kebiasaan konsumsi sumber gula sebagian besar subjek tergolong sering (≥ 5 kali/minggu). Kebiasaan konsumsi protein hewani pada kedua kelompok subjek tergolong sering (≥ 7 kali/minggu). Kebiasaan konsumsi fast food dan jajanan tergolong rendah (< 7 kali/minggu) pada kedua kelompok subjek. Berdasarkan uji hubungan Spearman, tidak adanya hubungan yang signifikan antara kebiasaan konsumsi pangan sumber gula dan sumber lemak terhadap status gizi (p > 0.05).
Keyword: konsumsi gula, konsumsi lemak, obesitas, status gizi

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.
Keyword: