Judul: Aktivitas Fisik, Pola Konsumsi Pangan, Status Gizi dan Tekanan Darah Hubungannya dengan Kadar Asam Urat pada Peserta Lansia Wanita Posbindu Bukit Duri Jakarta
Abstrak: Penelitian ini bertujuan untuk menganalisis hubungan antara aktivitas fisik, pola konsumsi pangan, status gizi dan tekanan darah dengan kadar asam urat pada peserta lansia wanita Posbindu Bukit Duri Jakarta. Desain studi yang digunakan yaitu cross-sectional study dengan jumlah contoh sebanyak 60 orang lansia wanita. Teknik pengambilan subjek yang digunakan adalah purposive sampling. Subjek adalah wanita usia lanjut ≥ 60 tahun, memiliki pendengaran yang baik, dapat diwawancarai, tidak mengonsumsi alkohol dan dalam keadaan sehat. Penelitian ini dilaksanakan pada Maret – Mei 2015. Hasil penelitian menunjukkan kadar asam urat contoh 68.3% tergolong normal dan 31.7% tergolong tinggi. Lebih dari setengah (56.7%) status gizi contoh tergolong normal. Sebagian besar contoh (61.7%) memiliki aktivitas fisik tergolong ringan dan 35% contoh memiliki tekanan darah tergolong hipertensi II. Berdasarkan uji korelasi spearman terdapat hubungan signifikan (p<0.05) antara aktivitas fisik, status gizi, tekanan darah, tingkat kecukupan vitamin C dan frekuensi konsumsi nasi dengan kadar asam urat. Tidak terdapat hubungan yang signifikan antara tingkat kecukupan energi, protein, lemak, karbohidrat dan asupan purin dengan kadar asam urat.
Keyword: aktivitas fisik, asam urat, lansia, pola konsumsi pangan, status gizi

Judul: Hubungan Pola Konsumsi, Status gizi dan Aktivitas Fisik dengan Kadar Asam Urat Lansia Wanita Peserta Posbindu Sinarsari
Abstrak: Arthritis is one of the diseases that are often found in women aged 55-70 years who often occured after menopause. The purpose of this study was to analyze the relationship between consumption patterns, nutritional status, physical activity with levels of uric acid in older women. Study design used in this study is a cross-sectional design. The sampling of this reasearh is 48 elderly people ≥50 years. There was significant difference (p<0.05) on age of menopause among the samples of normal and high uric acid level. There was no relationship between water consumption, coffee drinking habits, consumption of energy, carbohydrate intake, protein intake, fat intake, purines intake, nutritional status, physical activity and exercise habits with uric acid levels in the sample. There is a relationship between age at menopause with high levels of uric acid in the sample (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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