Judul: Mikosis sistemik pada kelelawar buah: gambaran histopatologi organ interna
Abstrak: Systemic mycoses recently have become increasingly important with the raising number of risk population whereas fruit bats are a potential vector of the disease. The aim of this research was to find systemic mycoses in fruit bats by examining the hystopatology of its lungs, liver, and guts. As many as 10 bats were sampled for organs. The respective organs were stained by Haematoxylin-Eosin (HE) stain and Periodic-Acid Schiff (PAS) stain. HE result signified systemic infection with 7 samples out of 10 exhibits lung lesions while 5 of them has liver lesions and 1 sample had gut lesion. PAS result revealed round unencapsulated PAS-positive cells with broad-based budding and round unencapsulate PASpositive cells without budding. Based on the type of budding and the absence of capsule, both organism were suspected as Blastomyces sp. with the differential diagnoses of Cryptococcus sp.. Out of 10 samples, 6 were suspected to be infected by Blastomyces sp.. Blastomycosis is classified as zoonotic disease thus there is a possibility of fruit bats being the vector of this pathogen.
Keyword: Bogor Agricultural University (IPB), zoonoses, systemic mycoses, Periodic-Acid Schiff, fruit bats, Blastomyces

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: 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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