Judul: The Role of Social Capital in Support of Sustainability efforts street vendors in The Pasar Kebon Kembang Bogor
Abstrak: Modal sosial merupakan strategi yang dapat digunakan dalam mendukung kegiatan usaha sektor informal salah satunya usaha Pedagang Kaki Lima (PKL). Penelitian ini bertujuan untuk menganalisis hubungan peranan modal sosial PKL dengan keberlanjutan usaha PKL, serta hubungannya dengan tingkat kesejahteraan pedagang kaki lima. Penelitian dan proses pengambilan data dilakukan di Pasar Kebon Kembang Bogor, Jawa Barat dengan pendekatan kuantitatif yang didukung oleh pendekatan kualitatif. Hasil penelitian yang diperoleh melalui uji statistik menunjukkan bahwa tidak terdapat hubungan antara peranan modal sosial pedagang kaki lima dengan keberlanjutan usaha dan hubungannya dengan kesejahteraan pedagang kaki lima di Pasar Kebon Kembang. Hal ini dikarenakan omset penjualan lebih berhubungan dalam menentukan tingkat keberlanjutan usaha dan juga kesejahteraan pedagang kaki lima yang berada di Pasar Kebon Kembang Bogor.
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, Social capital, Sustainability efforts, The welfare, Human ecology, Business activities, Welfare, Rank spearment

Judul: Strategi bertahan pelaku sektor informal: Peranan modal sosial migran Pedagang Kaki Lima di sekitar Kebun Raya Bogor
Abstrak: Sektor informal mampu menyerap tenaga kerja migran yang tidak terampil dengan jumlah yang relatif besar. Jumlah migran yang masuk ke daerah Bogor terus meningkat dari waktu ke waktu dan menyebabkan perkembangan sektor informal, khususnya PKL (Pedagang Kaki Lima). Para migran pedagang kaki lima biasanya memulai usaha dengan memanfaatkan modal sosial yang mereka miliki, misalnya, kerabat atau teman mereka dari daerah asal yang sama. Kemudian, mereka akan memperluas jaringan ke kelompok lain yang berkaitan dengan usaha mereka, seperti pemasok bahan baku. Para migran pedagang kaki lima bergantung pada modal sosial yang mereka miliki untuk mempertahankan usaha mereka. Penelitian ini menggunakan metode survei dan wawancara mendalam terhadap 40 pedagang kaki lima di sekitar Kebun Raya Bogor.
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, Informal sector, Social capital, Street vendor (PKL), Survival strategy

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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