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: Studi Kasus Tumor Kelenjar Hipofise pada Tikus
Abstrak: The development of pituitary tumors in small rodents is a grievous and irreversible pathological condition. Detecting pituitary tumors is difficult, frequently resulting in a late-stage diagnosis or even post-mortem detection. Notably, there is a lack of literature on this tumor in Indonesia. This study aims to enhance our comprehension of pituitary tumors in rats by investigating their pathomorphological characteristics. The research methodology entails obtaining organ samples, such as the pituitary gland, kidney, and cerebellum, from euthanized rats afflicted with pituitary tumors. Grossly, the tumor looks like a small mass at the base of the brain, measuring 0.5 cm in size. Subsequently, histopathological preparations are performed using hematoxylin-eosin (HE) staining, enabling examination under a light microscope. Parameters evaluated include the growth patterns of proliferative lesions, cellular pleomorphism, and atypia. Histological findings indicate that the pituitary gland comprises hyperplastic, chromophobic tumor cells arranged diffusely, displaying anisokaryotic nuclei. Occasionally, mitotic figures have been observed. The absence of kidney and cerebellum abnormalities suggests the absence of tumor metastasis. This pituitary tumor is conclusively classified as a nonfunctional chromophobe adenoma.
Keyword: pituitary tumor, pituitary gland, rat, histopathology

Judul: Alat Perekam Data Hujan dengan Mode Hemat Daya
Abstrak: Pengukuran intensitas hujan dapat dilakukan dengan beberapa pendekatan, seperti menggunakan perekam data hujan otomatis (automatic rain recorder). Data curah hujan yang terukur oleh tipping bucket akan tersimpan dalam SDcard setiap kejadian hujan terjadi. Penggunaan arduino sebagai komponen utama dipilih karena perangkat open source yang mudah dimodifikasi. Beberapa komponen arduino yang dapat dimodifikasi adalah ATmega dengan konsumsi daya sebesar 12 mA pada 3 volt serta 17 mA pada 5 volt. Adapun FTDI mengkonsumsi daya sebesar 20 mA pada 5 volt. Voltage regulator mengkonsumsi daya sebesar 38 mA pada 5 volt, 64 mA pada 9 volt, 103 mA pada 12 volt, selain itu led mengkonsumsi 1 mA pada 5 volt. Komponen yang dapat dihilangkan pada arduino antara lain FTDI, voltage regulator, serta led. Pengurangan komponen ini bertujuan agar daya tahan baterai menjadi 6.5 kali lebih hemat dibandingkan arduino standar. Setelah bagian bagian tersebut dihilangkan maka total konsumsi daya yang diperlukan oleh mikrokontroler on board arduino adalah 12 mA saat 3 volt dan 17 mA saat 5 volt saat mode kerjanya. Hasil pengujian menunjukkan bahwa pada penggunaan mode sleep lebih efisien daya dibandingkan mode power save. Mode sleep membantu cara penghematan daya pada pembuatan alat perekam data hujan Penggunaan metode ini jika diasumsikan kejadian hujan hanya terjadi selama tiga jam dalam sehari maka dengan menggunakan baterai sebesar 400 mAh dengan tegangan 3 volt maka alat perekam data hujan ini dapat hidup selama 15 Hari….
Keyword: Arduino, Power save, Rain, Automatic recorder, Tipping bucket, Geophysics and Meteorology, Rain fall, Model penakar hujan, Arduino promini, Arduino uno