Judul: Studi Patologi Organ Limpa dan Hati Mencit (Mus musculus) yang Diinfeksi Coxiella burnetii Pasase Dua Kali pada Hamster (Mesocricetus auratus)
Abstrak: Query fever (Q fever) is a disease caused by Coxiella burnetii agent. The aim of this research was to determine the gross pathology and histopathology of Coxiella burnetii infection in the spleen and liver of mice (Mus musculus) which were infected by Coxiella burnetii after twice passage in hamster (Mesocricetus auratus) using immunohistochemistry methods. In this research the gross pathology of liver and spleen showed hepatomegaly, and splenomegaly. The histopathological change of liver showed hepatocyte degeneration, necrose, and infiltration of inflammatory cells. The histopathological change of spleen showed inflammation which characterized by the white pulp depletion, red pulp hemorrhage, and infiltration of inflammatory cell. The results showed positive Coxiella burnetii in the spleen and liver.
Keyword: Coxiella burnetii, immunohistochemistry, Q fever, mice

Judul: Studi histopatologi organ limpa hamster (Mesocricetus auratus) yang Diinfeksi Coxiella burnetii
Abstrak: Query fever is a zoonosis caused by Coxiella burnetii (C. burnetii). The aim of this research was to determine the histopathological changes of spleen of hamster (Mesoscricetus auratus) which were infected by C. burnetii using Haematoxylin-Eosin (HE) and Immunohistochemistry (IHC) methods. This research used 6 hamsters which were devided into two passage. The histopathological examination picture with HE staining of first passage in hamsters showed relatively similar results with those the second passage such as red pulp hemorrhage and infiltration of inflammatory cells. Histopathological observation of spleen from first passage hamster by using IHC staining showed the positivity was unclear compared to the second passage hamster.
Keyword: Coxiella burnetii, Immunohistochemistry, Query Fever

Judul: Pembuatan Sel Surya Berbasis Film Ferroelektrik Barium Strontium Titanate (Ba0,5Sr0,5TiO3)
Abstrak: Growth of films Ba0,5Sr0,5TiO3 (BST) 1 M has been done with variation of annealing in hold time 8 hours, 15 hours, 22 hours, and 29 hours at constant temperature 8500C, above Si (100) substrate p-type, by using the sol-gel process method which followed with spin coating process at 3000 rpm for 30 seconds. Optics spectroscopy shows that BST film solar cells with annealing hold time 8 hours, 15 hours, and 22 hours, works effectively in wavelength ≥ 700 nm absorption range. Yet for sample with annealing hold time about 29 hours effectively absorb in ≤ 700 nm wavelength range. It obtained BST film refractive index at range 2.0 to 7.0 to wavelength range ±370-870 nm. Band gap BST film value based on annealing hold time 8 hours, 15 hours, 22 hours, and 29 hours respectively 2.60 eV; 3.12 eV: 3.24 eV, and 2.66 eV. Electrical conductivity value which obtained, indicate that the BST film is classified as semiconductor material with conductivity order 10-5-10-4 S / cm. The result of I-V photovoltaic characterization shows the BST film potentially to be a solar cells device with efficiency according to the annealing hold time 8 hours, 15 hours, 22 hours, and 29 hours in a row are 2.68x10-5%, 3.51x10-5%, 4.53x10-5% and 3.22x10-5%
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