Judul: Management of Bambang Lanang (Michelia Champaca L.) Community Forest through Agroforestry System in Empat Lawang District, South Sumatra
Abstrak: Hutan memiliki peranan vital dalam kelangsungan makhluk hidup. Peningkatan alih fungsi hutan dan lahan menjadi fungsi lainnya berpengaruh terhadap aspek sosial, ekonomi (pendapatan masyarakat), dan ekologi (komposisi jenis dan struktur tegakan). Hutan rakyat merupakan hutan yang dimiliki oleh masyarakat guna meningkatkan nilai ekonomi. Berdasarkan pola pengelolaannya, hutan rakyat terbagi menjadi tradisional, komersial, dan kemitraaan. Hutan rakyat di Kabupaten Empat Lawang, Sumatera Selatan didominasi oleh pola tradisional dengan mengimplementasikan pengelolaan sistem agroforestri. Sistem agroforestri merupakan sistem pengelolaan lahan yang intensif, produktif dan memiliki kapasitas untuk menjaga keberlangsungan ekosistem. Petani hutan rakyat di Kabupaten Empat Lawang, Sumatera Selatan mengelola lahan dengan sistem agroforestri untuk meningkatkan pendapatan yang diperoleh dari komoditas utama, yakni bambang lanang (Michelia champaca L) dan tanaman pendamping. Akan tetapi, studi terkait pengelolaan hutan rakyat bambang lanang melalui sistem agroforestri di Kabupaten Empat Lawang, Sumatera Selatan masih terbatas. Berdasarkan latar belakang tersebut, tujuan penelitian ini adalah untuk i) menganalisis sistem pengelolaan hutan rakyat bambang lanang melalui sistem agroforestri yang telah diterapkan oleh petani, ii) menganalisis komposisi jenis dan struktur pohon di hutan rakyat bambang lanang, serta iii) menganalisis kelayakan finansial dan faktor-faktor yang mempengaruhi tingkat pendapatan petani hutan rakyat. Metode yang digunakan adalah wawancara menggunakan kuesioner kepada 33 responden, pembuatan plot contoh sebanyak 100 plot, analisis vegetasi dan analisis kelayakan finansial. Pemilihan responden dan hutan rakyat dilakukan dengan purposive sampling. Hasil penelitian menunjukkan bahwa hutan rakyat bambang lanang melalui agroforestri di Kabupaten Empat Lawang, Sumatera Selatan dikelola secara tradisional dengan pola tanam tidak beraturan. Pengelolaan tersebut dilakukan secara turun-temurun. Jumlah spesies tanaman tertinggi ditemukan di Desa Fajar Bakti (26 spesies). Jumlah spesies tertinggi pada tingkat semai, pancang, tiang, dan pohon secara berurutan terdapat di Desa Muara Pinang (17 spesies), Paiker (17 spesies), Muara Pinang (12 spesies), dan Paiker (20 spesies). Komposisi jenis tanaman yang dominan di hutan rakyat adalah bambang lanang yang dikombinasikan dengan dengan duku (4,76), durian (2,44), kopi (0,22), karet (0,24), dan sengon (0,09). Nilai BCR tertinggi Desa Rantau Tenang (3,17), NPV tertinggi Desa Ratau Tenang (Rp242.865,600), dan IRR di Desa Fajar Bakti (20%). Hal tersebut menunjukkan bahwa hutan rakyat bambang lanang melalui sistem agroforestri layak untuk dibudidayakan.
Keyword: Analisis kelayakan, Agroforestri tradisional, Sumatera, Analisis vegetasi, Feasibility analysis, traditional agroforesty, vegetation analysis

Judul: Kontribusi Pengelolaan Hutan Rakyat Terhadap Pendapatan Rumah Tangga Petani dan Analisis Kelayakan Usaha Hutan Rakyat. (Studi di Desa Babakanreuma, Kecamatan Sindangagung, Kabupaten Kuningan, Propinsi Jawa Barat)
Abstrak: According to Hardjanto (2000), income of community forest farmers in Java are still positioned as a by product and incidental. Range of income is not more than 10 % of total revenue and sought simply. It shows that the contribution of community forest have not become the foundation of households subsistence, so it is necessary to conduct a study about how is the contribution of community forests management to total household income and it’s feasibility, especially in the Village Babakanreuma, District Sindangagung, Kuningan Regency, West Java Province. The purpose of this study was to identify the system of community forests management and marketing, knowing the contributions community forests management to households total income as well as examine the linkage of effectiveness of community forests area to the households total income and to determine the feasibility of it’s businesses. Determination of the respondents conducted using stratified random sampling method in which the respondents were 36 people obtained from the slovin formula. This study uses a qualitative approach that conducted by survey method using questionnaire and supported by quantitative techniques. The results shows that the contribution of community forests management to the households income has been very visible, reinforced by the magnitude of the contribution value that become higher and increasing in strata. So that the farmers land area of community forest significantly affected their household income. From the data obtained, in 1st strata , the resulting contribution is Rp. 2,208,333.00 per year (7.79%), 2nd strata is Rp 3.800.000,00 per year (11.98%), and 3rd strata is Rp 5.500.000,00 per year (13.00%). Management of community forests is feasible to run on all three strata. These statements are based on the amount of NPV (Net Present Value) that is not negative, BCR (Benefit Cost Ratio) is greater than one and the IRR (Internal Rate of Return) is greater than the prevailing rates. NPV values in strata I, II and III is Rp 6.378.880,00; Rp 14.134.803,00 and Rp 3.985.918.00. Community forests management systems at the sites are still modest. The harvesting is still based on needs and not according to the Sengon plant cycle which is the staple in this village. The timber marketing is only done by a contract system or the middleman (tengkulak) / buyer and furthermore become the responsibility of the middleman / buyer it self.
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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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