Judul: Fortifikasi Vitamin E dan Se sebagai Antioksidan terhadap Performa dan Kandungan Se Daging Ayam Kampung
Abstrak: Vitamin E and Se are antioxidant and essential micronutrient in poultry for normal health. The fortification of them was necessary to prevent the damage of phospholipid membranes, enzymes and other important molecules due to free radicals. One hundred and sixty Kampong chickens were used to evaluate the effects of dietary fortification of vitamin E, Se, and its combination on the performance of kampong chicken aged 8-13 weeks and Se content of the meat. The birds were fed control diet (P0); P0 + vitamin E 200 ppm (P1); P0 + Se organic 0.2 ppm (P2); and P0 + combination of vitamin E 200 ppm and Se organic 0.2 ppm (P3). This experiment used a Completely Randomized Design (CRD). The data were analyzed using Analysis of Variances (ANOVA). The parameters observed were feed consumption, body weight gain, feed conversion, final body weight, and Se content of the meat. The results showed that vitamin E and selenium fortification, or its combination did not affect (P> 0.05) the performance of kampong chickens, Se content of the meat increased 717.24% due to fortification of 0.2 ppm Se.
Keyword: vitamin E., Se organic, Se in meat, performance, kampong chicken

Judul: Efek Fortifikasi Vitamin E dan Mineral Se dalam Pakan Terhadap Profil Darah, Kadar Lemak Daging, dan Berat Bulu Ayam Kampung
Abstrak: Vitamin E and selenium are antioxidant and essential micronutrients in poultry for normal health and preventing free radical damage to phospholipid membranes, enzymes and other important molecules. Objective of this study was to determine the effects of vitamin E and /or Selenium fortification in the diet on blood profile, fat content of meat and feather weight. The research was carried out for 5 weeks using one-hundred-sixty Kampong chickens fed with commercial feed BR-21E as control (T1), fortification 0.2 ppm selenium organic (T2), 200 IU vitamin E (T3) and 200 IU Vitamin E + 0.2 ppm selenium organic (T4). This experiment used a Completely Randomized Design. The data were analyzed using Analysisof Variances (ANOVA) and any significant differences were further tested using Contras F Ortogonal. The variables observed were blood profile (haemoglobin, pack cell volume, erythrocyte, leukocyte, monocyte, eosinophile, heterophile, lymphocyte and ratio H/L), fat content of meat, and feather weight. The results showed that fortification with 0.2 ppm selenium organic and or 200 IU vitamin E did not affect (p>0.05) blood profile, fat content of meat and feather weight of Kampong chickens
Keyword: vitamin E, Se, kampong chicken, fat content of meat, feather, blood

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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