Judul: Studi Kasus: Tumor Kulit Pada Beruang Coklat (Ursus Arctos).
Abstrak: Seekor beruang coklat (Ursus arctos) berjenis kelamin betina yang berasal dari Taman Margasatwa Ragunan, DKI Jakarta-Indonesia didiagnosa menderita tumor kulit. Studi kasus ini bertujuan mengetahui jenis tumor pada beruang coklat yang telah berumur 39 tahun. Beruang sakit (nafsu makan dan aktifitas menurun) sekitar dua bulan dan dilakukan perawatan di kandang individu. Terapi dilakukan dengan pemberian antibiotik dan vitamin. Beruang tersebut mati pada 7 Oktober 2014, kemusian nekropsi segera dilakukan di Divisi Patologi Departemen Klinik, Reproduksi, dan Patologi Fakultas Kedokteran Hewan Institut Pertanian Bogor. Hasil nekropsi ditemukan multinodular berwarna merah tua dengan diameter 5,5 cm. Tumor terlihat menyatu dengan jaringan sekitar tanpa memperlihatkan batas atau tidak terlihat adanya kapsul yang membatasi, pola pertumbuhan yang tidak teratur serta menginvasi jaringan sekitar. Sampel jaringan tumor kemudian diperiksa secara histopatologi. Massa tumor terlihat sel-sel berbentuk pipih atau gelendong(spindled) poligonal dengan ukuran yang bervariasi (Anisositosis). Sitoplasma sel-sel tumor berwarna eosinofilik membentuk penjuluran, dan memiliki nukleus berbentuk bulat sampai oval (tidak seragam) dengan nukleolus berjumlah 1-2. Sel-sel tumor tersusun dalam kelompok yang tidak beraturan dengan jarak yang renggang. Kadang-kadang pada beberapa daerah ditemukan sel-sel tumor yang memiliki pigmen coklat sampai hitam (melanin). Pewarnaan Masson's Trichrome (MT) memperlihatkan adanya pertumbuhan kolagen minimal yang dihasilkan oleh jaringan ikat diantara sel-sel tumor. Pewarnaan imunohistokimia terhadap Desmin, Vimentin, dan S100 memperlihatkan hasil positif dan negatif terhadap Glial Fibrillary Acidic Protein (GFAP). Berdasarkan morfologi dan hasil imunohistokimia, tumor didiagnosa sebagai malignant melanoma.
Keyword: Beruang (Ursus arctos), malignant, melanoma, tumor kulit

Judul: Studi Kasus: Leiomioma pada Seekor Singa (Panthera leo)
Abstrak: This report described an abdominal leiomyoma in a female old lion (Panthera leo) from the Ragunan Zoo, Jakarta. The aim of this study was to identify the type of tumor from an old aged female lion with anamnese suffered from chronic gangrene on the right-rear leg. The lion was euthanized and then accompanied with necropsy. Gross findings were recorded and then histopathological examination of some organ samples done. Macroscopic observations showed several lesions. A tumor was found in abdominal cavity, has 14.5 x 9.8 x 6.5 cm in sized. The tissue sample from the tumor mass was further examined using histopathological examination. Based on the morphology, the tumor consisted of spindle-shaped cells with a cigar-shaped nuclei with blunt ends. Mitotic figure was <3, indicated that the tumor was benign. Masson's Trichrome staining showed that among the tumor cells are found collagen bundles (blue). Desmin immunohistochemical staining showed a positive result, that mean the tumor cells derived from smooth muscle cells. Other immunohistochemical stainings e.g. Vimentin, Glial Fibrillary Acidic Protein (GFAP), and Proliferating Cell Nuclear Antigen (PCNA) were negative. According to morphological and immunohistochemical characters, the tumor was diagnosed as leiomyoma.
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Judul: Sistem Instrumentasi Berbasis Kristal Fotonik Satu Dimensi untuk Pengukuran Parameter Gas NO2 pada Indeks Standar Pencemar Udara
Abstrak: The objective of this research was to build an integrated instrumentation based on one dimensional photonic crystal for NO2 gas measurement. The phenomenon of photonic pass band has been used as an optical detection for liquid concentration measurement. Photonic crystal, light emitting diode, and photodiode were designed to operate in NO2 absorption spectra that are in the range between 500 – 600 nm. The integrated optical instrument consists of three major subsystems i.e. optical sensor based on photonic crystal, signal conditioning, as well as control and data processing. The experimental results showed that the instrument was able to detect and measure the variation of NO2 gas concentration with resolution about 8 bit per μg/m3 equivalent to 14 bit/ppb.
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