Judul: Peta Tanah Hijau Mendalam dan Peta Kesesuaian Lahan Kota Bogor dan Sekitarnya
Abstrak: Soil contain of various different kind of on one place hewn the others not onIy vertically but also horizontal ty that follow systematicatty change base on forming factor so that needed soil grouping in according with specific characteristic that known as soil classification system.
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Judul: Sifat-sifat dan klasifikasi empat macam tanah di sekitar bogor menurut sistem taksonomi tanah
Abstrak: Pengetahuan tentang sifat-sifat tanah semakin maju, demikian pula sistem klasifikasi tanah semakin berkem- bang. Hal ini membawa konsekuensi kepada penamaan tanah yang menggunakan sistem lama perlu adanya penyesuaian. Sehubungan dengan reklasifikasi yang memperhatikan peng- gambaran sifat-sifat tanah yang lebih baik, penggunaan Sistem Klasifikasi Taksonomi Tanah merupakan suatu alter- natif. Tujuan penelitian adalah penamaan kembali tanah-ta- nah yang diambil dari empat tempat di sekitar Bogor dan mengetahui beberapa sifatnya. Untuk mewujudkan maksud tersebut dilakukan pengamatan di lapang dan analisis di laboratorium, kemudian tanah diklasifikasikan sampai ka- tegori family. Aluvial Coklat merupakan tanah yang masih belum ber- kembang, tampak agregasinya yang masih dalam taraf awal pembentukan struktur. Penyebaran liat dan C-organik yang tidak teratur, serta kadar C-organik yang relatif tinggi hampir pada semua lapisan mencerminkan adanya pe- lapisan-pelapisan akibat pengendapan. Tanah ini mempunyai kejenuhan basa (KB) termasuk tinggi dan kema- saman kurang dari 5.5. ...
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Judul: Pemurnian dan karakterisasi protein inhibitor RNA helikase virus hepatitis C
Abstrak: Hepatitis C virus (HCV) infection is the second most common chronic viral infection in the world with global prevalence. This infection is contribution to chronic hepatitis and liver cirrhosis, often leading to hepatocellular carcinoma. There is no effective drug and vaccine available against HCV. The current standard treatment, a combination of pegylated interferon-α with ribavirin, is limited by its suboptimal response rate in a significant patient population, side effects, and affordability. Therefore, development of effective drug is needed. One approach to find out the candidate of antiviral drug is to discover the inhibitor of enzyme that essential for virus replication, such as RNA helicase. Streptomyces chartreusis 5-095 produce the inhibitor of HCV RNA helicase. The aim of this study was to purify the protein inhibitor which has inhibition activity against ATPase activity of RNA helicase HCV from S. chartreusis 5-095. The supernatant of culture S. chartreusis 5-095 exhibited high inhibiton activity against ATPase activity of RNA helicase HCV (approximately 72%) at 10 days of incubation. The extracellular protein inhibitor was partially purified by procedures of precipitation with ammonium sulfate to 65% saturation and gel filtration (Sephadex G50) using methanol water solution (4:6) as an eluen. The purity of protein inhibitor was monitored by SDS PAGE. The protein inhibitor showed a relative molecular mass were estimated to be 14 kDa and increased the purity 23,08 fold than those of the crude protein. The specific activity and IC50 after purification were 13,1338 U/mg and 0,0767 mg/mL, respectively. The activity of purified protein inhibitor showed its stability over pH range from 5-8 and optimum at pH 7,4. The inhibition activity showed its stability up to 70% at temperature 100 oC. The purified protein inhibitor relatively stable its activity at storage in the range of -20 oC to room temperature for 35 days.
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