Judul: Dimensi dan Taper Bambu di Beberapa Lapak di Kabupaten Bogor
Abstrak: Indonesia is one largest manufacturer and exporter of bamboo nation in Asia among China and Vietnam. Development of Bogor regency bamboo production experienced up and down each year in spite of the extensive area of Bogor district bamboo plants get experiencing depreciation each year. The purposes of this research are: recording the kinds of bamboo being sold in Bogor regency, measuring the dimensions of bamboo being sold in Bogor regency which includes: the diameter, length, thickness, distance between the books and the tapers bamboo, determining correlation between the outer tapers and inner ones of bamboo being sold in Bogor regency. Bamboo is often on sale is the bamboo tali because bamboo is fairly cheap and much more useable in the community, while the bamboo andong and bamboo hitam is available but in limited quantities. Bamboo dimensions on the sale are dominated by small size bamboo tali (5-6 cm) and medium (7-9 cm) to meet the needs of the market Bogor regency tapers bamboo being sold in Bogor regency have tapers in the smallest bamboo ropes while the largest bamboo andong and tapers out the smallest black bamboo while the largest black bamboo. Most correlation between outer tapers and inner ones occurs on andong. However, bamboo Hitam and bamboo Tali do not have a most correlation.
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Judul: Pertumbuhan dan penyebaran komunitas bambu pada lanskap bantaran sungai di Bogor, Jawa Barat
Abstrak: Penelitian dilakukan di Kabupaten dan Kotamadya Bogor yang terdiri dari lima lokasi, yaitu (1) Arboretum Bambu IPB, (2) Laboratorium Silvikultur Fahutan IPB, (3) Kebun talun bambu di RT 01/01 Desa Babakan Darmaga Bogor, (4) Kebun talun bambu di RT 03/01 Desa Babakan Darmaga Bogor, dan (5) Kebun Raya Bogor. Penelitian menggunakan metode survei. Bambu yang diteliti terdiri dari tiga jenis bambu yaitu bambu tali (Gigantochloa apus), bambu kuning (Bambusa vulgaris), dan bambu garis (Gigantochloa pseudoarundinacea). Pengamatan dilakukan pada masing-masing jenis bambu terdiri dari lima contoh rumpun. Penelitian ini terdiri dari dua pengamatan, yaitu: (1) Pengamatan pertumbuhan bambu, yang terdiri atas variabel: (a) tinggi rumpun, (b) luas kanopi rumpun, dan (c) luas basal. (2) Pemetaan pola persebaran buluh dalam rumpun, yang terdiri atas variabel: (a) buluh hidup, (b) buluh mati, (c) rebung, (d) buluh dipanen, dan (f) luas basal rumpun. ...
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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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