Judul: Pengaruh Volume Gliserol dan Kuning Telur Terhadap Aktifitas Sperma Sapi Jantan Holstein-Friesian Yang Diawetkan Dalam Bentuk Semen Beku Butiran
Abstrak: Sejalan dengan laju PELITA yang telah memasuki tahap ketiga, naiknya tingkat pendapatan per kapita sehingga tingkat kehidupan rakyat Indonesia semakin membaik. Kebutuhan bahan makananpun ikut meningkat, baik dalam jumlah maupun mutunya. Salah satu tujuan dari rencana Pemerintah yang dituangkan dalam REPELITA III dalam pembangunan pertanian adalah tersedianya pangan yang cukup bagi penduduk. Hal ini berarti pula bahwa perencanaan penyediaan pangan harus diarahkan untuk menanggulangi masalah gizi yang dihadapi dalam meningkatkan taraf hidup dan kesehatan masyarakat (Anonymous, 1979). ...
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Judul: Pengaruh taraf gliserol dan kuning telur penyu laut terhadap aktivitas sperma sapi fries holland pada semen beku bentuk straw
Abstrak: Program inseminasi buatan masih menjadi tumpuan untuk meningkatkan populasi ternak, karena mempunyai keuntungan meningkatkan penggunaan pejantan unggul, penghematan uang dan tenaga, peningkatan potensi seleksi terhadap hewan- hewan jantan, mengurangi penularan penyakit dan memper- tinggi efisiensi reproduksi. Dalam program inseminasi buatan, baik untuk semen cair maupun semen beku, masih mengandalkan kuning telur ayam sebagai bahan dasar pengencer. Telur penyu mempunyai potensi sebagai bahan dasar pengencer, karena memiliki kandungan protein dan lemak yang cukup tinggi. Kandungan lemak dan proteinnya tersebut diharapkan sejalan dengan kandungan lesitin dan lipoprotein yang merupakan komponen pelindung sperma dari pengaruh "cold shock". Penambahan gliserol pada taraf yang optimum dapat melindungi sperma terhadap pengaruh "hypertonic shock" selama proses pembe- kuan. Tujuan penelitian ini adalah mengetahui pengaruh taraf kuning telur penyu laut, taraf gliserol dan waktu penyimpanan terhadap persentase sperma yang aktif kembali. Penelitian dilaksanakan di laboratorium Jurusan Reproduksi dan Kebidanan, Fakultas Kedokteran Hewan, Institut Pertanian Bogor. Penelitian ini menggunakan semen dari dua ekor sapi jantan Holstein Friesian milik PT. Karyana Gita Utama, yang ditampung menggunakan metode vagina buatan. Kombinasi taraf gliserol (G) dan kuning telur penyu (KT) dalam bahan pengencer adalah G5%KT10%, G5%KT20%, G%5KT30%, G7%KT10%, G7%KT20% dan G7%KT30%. Rancangan yang digunakan adalah Rancangan Acak Lengkap Pola Faktorial 5x2x3 dengan dua ulangan untuk masing- masing perlakuan. Hasil Analisis statistik menunjukkan bahwa waktu penyimpanan, taraf kuning telur penyu dan taraf gliserol...
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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