Judul: Gambaran Histopatologi Hati Mencit Setelah Pemberian Suspensi Daging Buah Kepel (Stelechocarpus burahol) Secara Intragastrik Selama 14 Hari
Abstrak: The aim of this study was to examine the effect of kepel (Stelechocarpus burahol) to the mice hepatocytes. Thirty male mice of 4 week aged were divided into three groups; control group was treated by aquadest, dose 1x group was treated by 2.6 mg/g BW/day kepel powder (0,5 ml kepel suspension/day) and dose 5x group was treated by 13 mg/g BW/day kepel powder (1.0 ml kepel suspension/day). The treatment was intragastrically for 14 days. The mice were euthanized and then followed by the liver collection for histopathology processed. The histopathlogical examination of liver showed hydropic degeneration, apoptosis and extramedullary hematopoietic observed on mice hepatocytes.The ANOVA analysis showed that kepel caused increase significantly (p<0,05) of hydropic degeneration and decrease significantly (p<0,05) of apoptosis of mice hepatocytes.
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Judul: Gambaran Histopatologi Ginjal Mencit Pasca Pemberian Suspensi Buah Kepel (Stelechocarpus burahol) Secara Intragastrik Selama 14 Hari
Abstrak: Tujuan penelitian ini adalah untuk menguji pengaruh kepel (Stelechocarpus burahol) pada ginjal mencit. Sembilan mencit jantan berumur 4 minggu dibagi menjadi tiga kelompok; kelompok kontrol diperlakukan dengan pemberian akuades, kelompok Dosis 1 diperlakukan dengan pemberian serbuk kepel pada dosis 2,6 mg/gBB/hari (0,5 ml suspensi kepel/ hari), kelompok Dosis 5 diperlakukan dengan pemberian serbuk kepel pada dosis 13 mg /gBB/hari (1,0 ml suspensi kepel/ hari). Perlakuan dilakukan dengan cara pencekokan secara intragastrik selama 14 hari. Mencit-mencit tersebut di-eutanasia dengan metode dekapitasi kemudian dilanjutkan dengan pengambilan ginjal untuk pembuatan preparat histopatologi. Evaluasi histopatologi ginjal menunjukkan ada degenerasi hidropis dan apotosis pada beberapa tubulus. Analisis Anova menunjukkan bahwa kepel menyebabkan penurunan apoptosis secara signifikan (p <0,05) tapi pengaruh kepel terhadap degenerasi hidropis tidak menunjukkan perbedaan yang nyata.
Keyword: Kepel, degenerasi hidropis, apotosis, tubulus.

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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