Judul: Perbandingan aktivitas enzim amilase dari serum dan feses sapi
Abstrak: Penelitian ini dilakukan di laboratorium patologi klinik departemen KRP fakultas kedokteran hewan. Dalam penelitian ini digunakan sampel serum dan feses sapi dengan jumlah masing-masing 16 tabung dari 16 ekor sapi untuk menentukan adanya aktivitas enzim amilase pada masing-masing sampel. Penelitian terhadap sampel serum dan feses sapi dengan membandingkan adanya aktivitas enzim amilase dengan menggunakan uji yodium dan uji bennedict. Hasil penelitian yang diperoleh pada uji yodium diperoleh koefisien korelasi serum dan feses sebesar 0,40 (40%) yang menunjukkan hubungan antara kedua peubah ( serum dan feses) itu lemah dan dikatakan mempunyai korelasi positif. Sedangkan pada uji bennedict, koefisien korelasi serum dan feses sebesar 0,16 (16%) yang menunjukkan hubungan kedua peubah tersebut sangat lemah dan dikatakan mempunyai korelasi positif.
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Judul: Pengaruh Suhu Penyimpanan Terhadap Aktifitas Enzim Tripsin pada Feses Sapi
Abstrak: Tripsin adalah salah satu enzim yang disekresi oleh pankreas yang berfungsi untuk memecah rantai protein guna penyerapan protein lebih lanjut pada usus. Demikian pentingnya tripsin dalam saluran pencemaan sehingga jika enztm m1 terganggu maka mengakibatkan tidak efisiennya konversi pakan. Dalam penelitian ini digunakan sampel feses seekor sapi FH, betina dan berumur 2 tahun. Sampel feses dibagi atas 3 perlakuan penyimpanan yaitu penyimpanan pada suhu 27°C , suhu 4°C dan suhu 18°C. Setiap hari dilakukan pemeriksaan dengan metode uji gelatin terhadap sampel feses tersehut guna melihat suhu yang paling baik untuk penyimpanan sampel feses tersebut. Dari basil penelitian terhadap sampel feses yang disimpan pada beberapa tingkat suhu penyimpanan maka dapat disimpulkan bahwa penyimpanan pada suhu dingin yaitu 4°C adalah suhu penyimpanan yang terbaik. Hal ini disebabkan oleb pertumbuhan bakteri yang dapat mengganggu hasil penelitian dapat dihambat bahkan dimatikan. Faktor pendukung lain adalah sifat dari tripsin pada suhu penyimpanan ini (4°C) tidak berubah. Penyimpanan pada suhu beku yaitu 18°C memberikan basil yang kurang baik karena terjadi perubahan struktur dari enzim tripsin yang disebabkan oleh lingkungan yang sangat dingin. Sedangkan penyimpanan pada suhu kamar juga memberikan hasil yang kurang baik, hal ini disebabkan oleh pertumbuhan bakteri pengganggu.
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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