Judul: Mempelajari Karakteristik Fisik dan Kimia Edible Film dari Gelatin Tulang Domba dengan Plasticizer Gliserol
Abstrak: Ediblefilm adalah bahan pengemas pangan yang dapat dimakan dan terbuat dari bahan-bahan alami. Edible film bersifat ramah lingkungan karena dapat diuraikan kembali secara alami juga dapat digunakan untuk melindun~ makanan dari kerusakan sehingga dapat memperpanjang umur simpan produk pangan. Dalam penelitian ini, dibuat edible film dengan bahan dasar gelatin dengan gliserol sebagai plaslicizer. Empat konsentrasi gliserol digunakan sebagai perlakuan. Tujuan dari penelitian ini adalah untuk mengetahui konsentrasi gliserol yang paling baik dalam pembuatan edihle film dan karalcteristik ediblefilm yang dihasilkan.
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Judul: Karakteristik Edible Film dari Isinglass dengan Penambahan Sorbitol sebagai Plasticizer
Abstrak: Gelembung renang merupakan limbah hasil perikanan yang banyak mengandung protein kolagen dan sangat potensial sebagai bahan baku edible film. Namun, edible film yang dihasilkan dari bahan dasar gelembung renang masih terlalu porous, sehingga produk pangan yang dikemas mudah rusak. Disisi lain, sifat gelatin yang amorphous dapat dikurangi bahkan dihilangkan dengan penambahan plasticizer. Tujuan penelitian ini adalah untuk mengetahui pengaruh konsentrasi sorbitol sebagai plasticizer dari edible film dengan bahan dasar isinglass, serta mengetahui karakteristik edible film yang dihasilkan. Penelitian pembuatan edible film dari isinglass terdiri dari dua tahap, yaitu pembuatan larutan isinglass dan pembuatan edible film yang meliputi penelitian pendahuluan dan penelitian utama. Pembuatan larutan isinglass meliputi pemebersihan gelembung renang, pengeringan pengecilan ukuran dan perendaman dalam larutan asam asetat. Larutan isinglass yang diperoleh ditambah sorbitol dan dikeringkan dalam cetakan hingga menghasilkan edible film. Konsentrasi sorbitol sebagai plasticizer yang digunakan pada penelitian pendahuluan adalah 0.4%, 0,8%, 1,2%, 1,6% dan 2%. Konsentrasi yang terpilih yaitu 1,2% selanjutnya dijadikan dasar untuk penelitian utama yang dikombinasikan dengan konsentrasi gelembung renang 0,5% dan 0,75%. Edible film yang dihasilkan diuji karakteristik fisik dan mekaniknya meliputi ketebalan, kuat tarik, persen pemanjangan, laju transmisi oksigen dan laju transmisi uap air. Dat yang dihasilkan diolah menggunakan Rancangan Acak Lengkap
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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