Judul: Studi kasus : gambaran histopatologi organ ginjal pada kalong di Gorontalo
Abstrak: Fruit bats were world wide distributed mammals including in Indonesia. This study used samples called Kalong Gorontalo (KG) of the kidney from three species of fruit bats (Acerodon celebensis, Dobsonia exoleta, and Pteropus hypomelanus) from Gorontalo, North Sulawesi. The aims of this study were to find out the histology overview and pathology condition from the kidney to know the pathogenesis of the disease that infected those fruit bats. Histological overview used Hematoxylin Eosin (HE) shows that the cell and tissue in all of the samples had some pathology condition such as : hydropic swelling, degeneration, necrosis, protein deposition in the tubulus lumen, and dilatation of tubulus lumen. Some of the samples that were KG 1, 4, 5, 6, 21, and 26 showed positive reaction with Periodic Acid Schiff (PAS), it means that there were glycogen deposition in kidney. In addition, sample KG 7 showed positive reaction PAS with budding cell inside that indicated a systemic mycosis.
Keyword: Acerodon celebensis, Dobsonia exoleta, fruit bats, kidney, Pteropus hypomelanus.

Judul: Gambaran Histopatologi Hati Kalong di Gorontalo
Abstrak: Acerodon celebensis and Pteropus hypomelanus are the species of fruit bats that live in Gorontalo. They are potential as reservoir of infectious agents, such as Hendra virus, Nipah virus, and Menangle virus. The aims of this research were to study the histopathology of Gorontalo fruit bats liver and to examine the potency of Gorontalo fruit bats as host and reservoir of hepatitis-causing infectious agents. Hepatic tissues of the bats were stained with Hematoxylin and Eosin (HE) for histopathological examination, antibody polyclonal rabbit anti Coxiella burnetii FKH IPB for immunohistochemical examination, and Periodic Acid Schiff (PAS) to detect glycogen and parasite. Histopathological examination showed that most hepatic tissues had granulomatous inflammation. The hepatic tissues stained with PAS found the presence of glycogen and fungi that suspected as Blastomyces dermatitidis. Immunohistochemical staining for Coxiella burnetii showed negative results.
Keyword: Acerodon celebensis, Blastomyces dermatitidis, fruit bats, hepatitis, Pteropus hypomelanus

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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