Judul: Konsumsi Minyak sawit Merah Meningkatkan Jumlah Sel Natural Killer dan Menurunkan Kadar Enzim Siklooksigenase 2 pada Limfosit Ibu Rumah Tangga di Kecamatan Dramaga Bogor.
Abstrak: Salah satu vitamin yang berperan penting dalam imunitas tubuh adalah vitamin A. Selain penting dalam mekanisme penglihatan, vitamin A juga dapat mencegah atau menurunkan resiko timbulnya berbagai penyakit degeneratif seperti kanker. Crude palm oil (CPO) yang berwarna merah sehingga sering disebut minyak sawit merah atau red palm oil tanpa melalui proses pemucatan merupakan sumber provitamin A dengan komponen utamanya α dan β-karoten yang memiliki aktivitas provitamin A (El-Hadad et al. 2011). β-karoten dikenal sebagai salah satu bahan alami pencegah kanker. ...dst
Keyword: minyak sawit merah, crude palm oil, CSR, natural killer, kanker

Judul: Penerimaan Konsumsi Minyak Sawit Mentah dan Pengaruhnya Terhadap Aktivitas Enzim Antioksidan Sel Darah Merah Responden di Kecamatan Dramaga Bogor
Abstrak: Crude palm oil (CPO) is red colored oil derived from palm fruit husk. CPO contains 500-700 pmm β-carotene, 600 ppm vitamin E, ubiquinone, squalene, and lutien which functioned as antioxidants. These antioxidants can modulate antioxidant enzymes such as superoxide dismutase and catalase to ward off free radicals. However, the use of this oil is still scarce as a source of antioxidant. The objectives of this research were to investigate the consumption acceptance of crude palm oil and its effect on antioxidant enzymes activity. Seventy eight respondents from low income families were selected to receive 140 ml CPO / week for 2 month. The distribution activities were monitored using questionnaires to determine consumer acceptance of the product. Blood from twenty two respondents, consisting of productive-aged women, was withdrawn before and after consumption and the erythrocyte was analyzed for activity of superoxide dismutase using nitro blue tetrazolium reduction assay and catalase spectrophotometrically. The results showed that product was accepted by 96 – 100 % respondents after two weeks until two months consumption. The erythrocyte SOD increased from 4.592 ± 1.336 U/mg protein to 4.767 ± 1.222 U/mg protein and catalase increased from 1018.911 ± 0.055 to 1219.607 ± 0.065 Unit/mg protein (mean ± SD) after consumption of approximately 3.771 ml CPO/person/day. From this research we can conclude that intervention with CPO for two months not only change and improve the knowledge of respondent about natural antioxidant, but also can increase the activity of antioxidant enzyme in human erythrocyte.
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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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