Judul: Pengaruh Jenis Media Campuran Kotoran Sapi, Kotoran Kelinci dan Cacahan Batang Pisang Terhadap Produktifitas dan Kualitas Nutrisi cacing Tanah (Lumbricus rubellus).
Abstrak: Penelitian ini di laksanakan di Balai Penelitian Ternak Ciawi, Bogor. Penelitian ini bertujuan untuk mengetahui pengaruh jenis media campuran yang mengandung kotoran sapi, kotoran kelinci dan cacahan batang pisang terhadap produktifitas dan kualitas nutrisi cacing tanah. Bahan bahan yang di pergunakan dalam penelitian ini meliputi cacing tanah jenis Lumbricus rubellus berumur 3,5 bulan, kotoran sapi, kotoran kelinci, dan batang pisang yang telah di cacah hingga berukuran 2-5 cm. Kemudian masing masing kotoran ternak dan batang pisang di fermentasi selama 3 minggu dan setiap minggunya di lakukan pengadukan sebanyak dua kali. Setelah proses fermentasi selesai, bahan bahan tersebut di campur dengan perbandingan antara kotoran ternak dan batang pisang 25%:75%, 50%:50% dan 75%:25% dan di tempatkan dalam kotak sarang yang telah di siapkan yang berukuran P=27 cm, T=14 cm L=20 cm sebanyak 24 kotak. Untuk setiap kotak sarang di isi media sebanyak 400 gr dan 20 ekor cacing tanah.
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Judul: Pengaruh campuran kotoran rumen sapi dan rumput lapang terhadap bobot tubuh, produksi kokon dan penyusutan sarang pada cacing tanah (Eisenia foetida Savigny)
Abstrak: Tujuan penelitian ini adalah untuk mengetahui pengaruh berbagai campuran kotoran rumen sapi dan rumput lapang ter- hadap bobot tubuh cacing, produksi kokon, dan penyusutan sa- rang pada pemeliharaan 20 dan 40 hari. Penelitian dilaku- kan di Laboratorium Zoologi, Fakultas Matematika dan Ilmu Pengetahuan Alam-IPB, Tajur, Bogor. Penelitian berlangsung mulai tanggal 5 Juli sampai dengan tanggal 18 September 1991. Pada penelitian ini kotak sarang yang digunakan seba- gai habitat (tempat hidup cacing) yaitu bata merah ukuran 3 25 X 25 X 15 cm. Perlakuan yang digunakan terdiri dari 4 macam komposisi media campuran kotoran rumen sapi dan rumput lapang, yaitu P₁ (100% kotoran rumen sapi), P2 (75% kotoran rumen sapi + 25% rumput), P3 (50% kotoran rumen sa- pi + 50% rumput), dan P4 (25% kotoran rumen sapi + 75% rum- put). Masing-masing perlakuan terdiri dari 4 ulangan. Se- mua media yang sudah dicampur rata, masing-masing ditanam cacing sebanyak 50 gram (berat bersih). Penyiraman dilaku- kan setiap tiga hari sekali...
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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