Judul: Studi Kasus: Kajian Histopatologi pada Seekor Singa Afrika (Panthera leo) yang Menderita Pyometra
Abstrak: An African lioness (Panthera leo) was diagnosed with pyometra after it was found dead with purulent discharge from the vulva. The purpose of this study is to examine gross and histopathological changes of various organs of the lion to know the causes of the death. The organ sample of heart, lungs, liver, intestine, kidney, and uterus were made into histopathology slide with Haematoxilin-Eosin staining. Histopathological examination showed cardiomyopathy, emphysema and edema pulmonum, purulent enteritis, hepatopathy and passive liver congestion, and also chronic active nephritis. Uterus inflammation with purulent exudation indicated pyometra with cystic endometrial hyperplasia. Pyometra in the lion leads to sepsis that is characterized by hemorrhage and degeneration of parenchymal organs. Cardiomyopathy causes heart failure which leads to congestion of the entire organ. Lion’s death was caused by sepsis and heart failure.
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Judul: Studi Kasus: Kajian Histopatologi Pada Kematian Seekor Biawak Ambon (Varanus indicus)
Abstrak: The aim of this case study was to study the cause of death of an Ambon monitor lizard (Varanus indicus) which died suddenly without showing any clinical signs. Organs that were showing abnormality were collected and histopathologically processed. Gross examination showed enlarged liver with multiple white foci ranging from 0.1 to 2 cm in diameter and diagnosed as multifocal abcess. Abcesses were also found in the spleen and kidney. The mucosa of the intestine was filled with hemorrhage exudate and contained many necrotic areas. The intestine was diagnosed as enteritis hemorrhagica et necroticans. The histopathological examination showed granulomatous inflammation in the liver, spleen, kidney and intestine, and amoebas were found in all of these organs. The death of this lizard is caused by liver failure and multifunctional organ failure caused by chronic inflammation of amoebiasis.
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Judul: Enhancement of photon absorbtion on BaxSr1-xTiO3 thin films semiconductor using photonic crystals.
Abstrak: In this research, has been conducted BaxSr1-xTiO3 (BST) thin films manufacturing for mole fraction x = 0.25, 0.35, 0.45, and 0.55; and concentration of 1 molar using chemical solution depositon (CSD) method. The materials, which are used in this research, are barium acetate [Ba(CH3COO)2, 99%], strontium acetate [Sr(CH3COO)2, 99%], titanium isopropoxide [Ti(C12O4H28), 97.999%], gallium trioxide [Ga2O3], 2-methoxyethanol [H3COOCH2CH2OH, 99%] and 1 x 1 cm of transparent conductive oxide (TCO) glass as substrate. Two BST thin films are made that for BST thin films which are doped by 10% galium (BGST) as p-type layer and pure BST solution as n-type. BST solution is made by reacting barium acetate [Ba(CH3COO)2, 99%], strontium acetate [Sr(CH3COO)2, 99%] and titanium isopropoxide [Ti(C12O4H28)] into 2-methoxyethanol solvent [H3COOCH2CH2OH, 99%] in accordance with mass gram for each x value. While, BGST solution is made in the same way as BST solution, plus adding gallium at 10% of the mass of BST. Once all materials are reacted, then vibrated using ultrasonic for 90 minutes, and followed by coating BGST / BST on the TCO substrate. Once the layer is formed, then annealed for 15 hours at temperature of 500 °C with increasing rate of 1.67 oC/minute. Characterizations of BST thin films with or without photonic crystals include the absorbance and transmittance in the visible light spectrum, as well as the electrical photoconductivity characterizations. From BST thin films without photonic crystals indicate that our thin films have light absorption area on almost the entire range of the visible light spectrum even to the infrared range with absorption value over than 67.6%, in addition, it can be seen that the maximum absorbance of BST thin films for all mole fractions lie in blue to green light spectrum region, 457 nm ≤ λ ≤ 570 nm and the minimum in yellow to red light spectrum region, 570 nm ≤ λ ≤ 678 nm. The largest absorbance is found at x = 0.25 with average absorbance value of 92.04% and maximum and minimum absorbance peaks at wavelength of 500.89 and 657.72 nm, respectively. At x = 0.35, average absorbance value decreased to 83.55% with maximum and minimum peaks at 505.73 and 613.68 nm, respectively. Then increased to 91.16% at x = 0.45 with maximum and minimum peaks at 506.04 and 618.56 nm, respectively. At x = 0.55, average absorbance value decreased to 80.12% with maximum and minimum peaks at 507.85 and 608.79 nm, respectively. Moreover, it can be seen that the addition of barium mole fraction leads to wider maximum absorbance or minimum transmittance peaks and narrower minimum absorbance or maximum transmittance peaks in the same range of the green and blue & red light spectrums, respectively. BST thin films with photonic crystals show increasing in absorption for all x values in the range of 3.04 into 13.33%. At x = 0.25, average absorbance percentage increased 3.96% from 92.4 into 95.68%, for x = 0.35 average percentage increased 7.07% into 89.45 from 83.55%. Furthermore, average absorbance of BST thin films at x = 0.45 increased 3.04% from 91.16 into 93.93% and x = 0.55 has
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