Judul: Pengaruh pemberian aflatoksin B1 terhadap perubahan kadar protein total dan enzim glutamat piruvat transaminase serum pada kelinci
Abstrak: Tujuan penelitian adalah untuk mengetahui perubahan kadar serum. protein total dan enzim glutamat piruvat transaminase kelinci yang diberi aflatoksin B₁ secara peroral. Aflatoksin merupakan salah satu metabolit dari kapang yang dibentuk setelah fase logaritma dari tahapan pertumbuhan kapang dan berpotensi sebagai racun pada hewan dan manusia (Butler, 1974). Kadar afltoksin yang melebihi dosis maksimal LD50 bagi unggas maupun ternak lainnya dapat menimbulkan gejala keracunan yang diberi istilah afltoksikosis. Pada ayam aflatoksin terakumulasi di hati, limpa dan ginjal dengan kerusakan terparah pada organ hati (Pribadi dan Patriana, 1996). Untuk mendiagnosa aflatoksikosis, selain mengamati gejala klinis juga dapat dilakukan pemeriksaan laboratorium dengan melihat gangguan fungsi hati. Gangguan dan kelainan fisiologis hati dapat ditelaah dengan uji-uji yang digunakan untuk mendiagnosa penyakit hati, salah satunya enzim glutamat piruvat transaminase (SGPT) yang merupakan enzim yang khas pada kerusakan hati dan protein total (TP) tidak khas untuk suatu kelainan tetapi juga dapat digunakan untuk membantu penegakan diagnosa, prognosa dan evaluasi berbagai penyakit serta gangguan metabolisme.
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Judul: Perbandingan perubahan histopatologik hati kelinci yang mendapatkan aflatoksin B1 secara intravena dan peroral
Abstrak: Penelitian ini bertujuan untuk mengetahui perbandingan pengaruh pemberian aflatoksin B₁ (AFB₁) terhadap perubahan histopatologik hati kelinci yang mendapatkan AFB, secara intravena dan peroral. Penelitian dilakukan dari bulan Agustus sampai dengan bulan Desember 1999 di Laboratorium Mikologi Bagian Penyakit Hewan dan Kesehatan Masyarakat Veteriner dan Laboratorium Patologi Bagian Parasitologi dan Patologi, Fakultas Kedokteran Hewan, Institut Pertanian Bogor. Hewan percobaan dalam penelitian ini menggunakan 21 ekor Kelinci jantan dan betina dengan umur kurang lebih enam bulan dengan berat badan kira-kira dua kilogram, yang dibagi dalam tujuh kelompok. Masing-masing 'kelompok terdiri dari tiga ekor kelinci dan diberi label a,b,c pada tiap kelompoknya. Kelompok la sampai dengan kelompok illc diberi AFB₁ secara intravena (melalui vena auricularis) dengan dosis bertingkat 60 µg/kg, 300 µg/kg dan 600 µg/kg. Kelompok IVa sampai dengan kelompok Vlc diberi AFB, secara peroral dengan dosis bertingkat 60 µg/kg, 300 µg/kg dan 600 µg/kg. Sedangkan kelompok tersisa merupakan kontrol (tidak diberikan AFB₁). AFB₁ diberi ulang pada hari ke-8, 15, dan 22 baik secara intravena maupun peroral. Hari ke-32 dilakukan euthanasia dan pembedahan untuk pemeriksaan patologik dan histopatologik..
Keyword: kelinci

Judul: Characteristic of Overshooting Top (OT) Based on  Himawari  8  Satellite  as  a  Convective  Cloud  Feature  that  Generates  Extreme Weather in the Java Island Region
Abstrak: Overshooting Top (OT) is a feature at the top of a convective cloud that is associated with extreme weather. Research on OT in tropical Indonesia is still very limited. The existence of geostationary satellites with wide area coverage and fast frequency observations is useful for observing the fast dynamics of the OT life cycle. Therefore, this study intends to analyze the relationship between OT and extreme weather, updraft and thermodynamic conditions of OT when extreme weather occurs, the best objective method for detecting OT in the day time and night time, and the spatiotemporal distribution of OT in the tropical region of Java Island during the 2018-2021 period. Based on visual analysis using visible channel and Himawari 8 sandwich products, 87% of extreme weather events in Java were accompanied by the appearance of OT. It indicates that the presence of the OT pattern is a convection cloud pattern or feature that is closely related to extreme weather events for the Java Island region. The existence of a time lag between the appearance of OT and extreme weather events on Java Island indicates that the OT of convection cloud can be used as a precursor or nowcasting for the appearance of extreme weather. Most of the convective cloud OT features during extreme weather events on Java Island have altitude that were only able to exceed the altitude of the equilibrium level and few were able to exceed the tropopause level of 9 km – 16 km. The difference in atmospheric conditions during extreme weather events on Java Island, which is in the tropics and subtropics, is a strong and unstable convective energy condition characterized by a larger CAPE, as well as unstable KI, LI, SI and TTI values. It is offset by kinematic factors in the form of a weak vertical wind shear (bulk wind shear 0-6 km) and a higher freezing point height. The difference between extreme weather events in the Java Island region and other tropical regions compared to subtropical regions is the strong updraft speed of convection clouds. The IRW Texture COMB algorithm based on the IRW-Texture Gradient modification and the COMB algorithm shows a significant increase in quality for detecting OT and non-OT pixels in Java. Rainy days with rainfall > 50 mm/day are very common in areas with an altitude of > 500 m. On the other hand, the level of convection activity which is indicated by the presence of OT and lightning is significantly reduced in this area. OT of convective clouds appear more frequently during the DJF season and less frequently during the JJA season. OT often appears during the day time and rarely at night time. Most OTs appear in the central part, away from the south and north coasts of Java Island during the day, while OTs that appear near the south and north coasts of Java Island can appear in the morning or afternoon.
Keyword: convective clouds, extreme weather, Overshooting Tops, Himawari 8 Satellite