Judul: Gambaran Histopatologi Organ Limpa pada Kalong Asal Gorontalo
Abstrak: Acerodon celebensis and Pteropus hypomelanus are species of Chiroptera that lived at Gorontalo. Those species are known as fruit bats that has potential as reservoir host for several zoonosis cases. The aim of this study was to determine the health status of Gorontalo’s fruit bats through the overview histopathology of spleen. Nine samples were used in this research that consist of seven spleens of Acerodon celebensis and two spleens of Pteropus hypomelanus that had been fixed in a solution of Buffer Neutral Formalin 10%. Observations were made by looking at the state of the red pulp and white pulp by using three different staining is Hematoxylin-Eosin, Congo Red, and Periodic Acid Schiff. Nine samples were observed by using Hematoxylin-Eosin showed the presence of inflammation and excessive accumulation of hemosiderin pigment. The result of Congo Red staining showed two positive samples with the presence accumulation of amyloid and Periodic Acid Schiff staining showed six positive samples with the presence accumulation of carbohydrates. Three samples of six positive samples showed microorganisms were suspected belongs to systemic mycosis. The conclusions of this research showed chronic inflammation in fruit bats spleen and were suspected due to systemic infection of Blastomyces dermatitidis.
Keyword: Acerodon celebensis, fruit bats, histopathology, Pteropus hypomelanus, spleen

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: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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