Judul: Gambaran Radiografi Tulang Tibia Hasil Implan Scaffold Biphasic Calcium Phosphate/Alginate Pada Babi (Sus scrofa)
Abstrak: Proses persembuhan fraktura tulang merupakan proses pemulihan yang memerlukan waktu yang cukup lama. Kejadian fraktura tulang yang semakin meningkat telah memicu perkembangan riset biomaterial di dunia medis sebagai pendukung persembuhan tulang. Gambaran radiografi pada tulang perlu dilakukan untuk melihat tahap dan kecepatan persembuhan tulang. Penelitian ini menggunakan scaffold biphasic calcium phosphate (BCP) 70/30 sebagai bahan implan bertujuan untuk mengetahui pengaruh pertumbuhan jaringan pada proses persembuhan tulang tibia babi dengan melakukan pemeriksaan rontgen bagian tulang tibia di regio ektremitas kaki belakang. Tiga ekor babi telah digunakan dalam penelitian ini dan diimplan biomaterial BCP berpori. Sebelum memulai prosedur operasi, ketiga babi tersebut diaklimatisasi dengan pemberian obat cacing dan antibiotik selama 14 hari. Defek dibuat pada kaki belakang kiri dan kanan os tibia, kaki kanan diberi bahan implan sedangkan kaki kiri tidak diberikan bahan implan sebagai kontrol. Radiografi diambil pada hari ke-0, ke-7, ke-30 dan ke-60 pasca implantasi. Radiografi yang dihasilkan kemudian dianalisis dengan menggunakan software image-J untuk menilai status pelet BCP/alginate, reaksi tulang dan jaringan sekitarnya serta respons pembentukan tulang baru. Hasil menunjukkan bahwa penurunan ukuran defek perlakuan adalah lebih sedikit tetapi memicu pertumbuhan kalus yang lebih banyak dibanding defek kontrol. Nilai densitas implan BCP dan peri-implan proksimal tulang secara umum mengalami penurunan selama proses persembuhan tulang. Kesimpulan dari penelitian ini adalah bahan implan BCP berpori berpengaruh terhadap proses persembuhan tulang.
Keyword: bone, density, healing, BCP implant, pig, radiography, scaffold

Judul: Evaluasi Radiografi Pulmonum Babi (Sus scrofa) Hasil Implan Scaffold Biphasic Calcium Phosphate/Alginate pada Tulang Tibia
Abstrak: Biphasic Calcium Phosphate (BCP) adalah biomaterial yang dapat mempercepatkan pertumbuhan tulang akibat fraktura. Biomaterial ini diduga dapat memberi efek terhadap pulmonum. Penelitian ini bertujuan untuk mengevaluasi gambaran radiografi pulmonum terhadap penanaman implan Scaffold Biphasic Calcium Phosphate (BCP). Hewan coba yang digunakan sebanyak tiga ekor babi jantan (Sus scrofa) yang berumur 2-3 bulan dengan bobot badan 20-25 kg. Pemeriksaan radiografi dengan standar pandang left lateral recumbency dilakukan sebelum hewan dioperasi. Penanaman implan dilakukan pada bagian medial tulang tibia kanan sedangkan pada tulang tibia kiri yan telah dibuat defek melalui pegeboran dibiarkan tanpa implan dan digunakan sebagai kontrol. Gambaran radiografi diambil setiap bulan selama tiga bulan yaitu pada saat praoperasi, hari ke-30 dan hari ke-60 pascaoperasi. Pengamatan dengan software Image J menggunakan sampel secara kualitatif dan deskriptif. Hasil pengamatan tidak didapatkan perubahan pada gambaran radiografi pulmonum. Implan scaffold BCP/alginate pada babi (Sus scrofa) tidak memberikan efek abnormalitas terhadap pulmonum.
Keyword: babi (Sus scrofa), Implan Bisphasic Calcium Phosphate, left lateral recumbency, radiografi pulmonum

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