Judul: Dampak Perkembangan Toko Modern Terhadap Kinerja Pedagang Produk Pertanian Pada Pasar Tradisional di Kota Bekasi
Abstrak: Modern stores have been present in major cities in Indonesia since last three decades. With the rapid growth of the ritail sector, in 1998, Indonesia made a deal with the IMF that foreign ritelers can freely invest in Indonesia. This has led to the perception that traditional markets are the real victims of the ritail sector competition which leads to reduced consumer due to modern shops can provide advantages that can not be provided by traditional markets such as convenience, product quality and safety. Traditional market traders who sell the majority of agricultural products are in danger because these commodities are also a large part of product line supermarkets and hipermarkets. This study aimed to analyze changes of agricultural products trader performance in traditional markets as the growing number of modern stores in Bekasi and the factors that influence changes of revenue and profits traders of agricultural products. Results of paired t-test showed that there are a change in their respective markets of the variables revenue, profit, operating hours, circulation of goods, number of buyers, the number of customers and the number of employees experiencing. At the revenue variable, real influential factors are a gender dummy, education level, number of kiosk, spacious kiosk, main commodity is rice dummy and main commodity is fresh fruits and vegetables dummy. At the profit variable, real influential factors are a gender dummy, level of education, trading experience, number of kiosk, spacious kiosk and location dummy.
Keyword: Multiple Regression, paired t-test, Modern Stores, Traditional Market, Traders

Judul: Dampak Kehadiran Ritel Modern terhadap Profitabilitas Pedagang Pasar Tradisional di Provinsi DKI Jakarta
Abstrak: The aims of this research are to analyze the impact of modern retail on the profitability level of traditional market traders in DKI Jakarta. The research was conducted on the three traditional markets in DKI Jakarta, which are Jembatan Besi Market and Menteng Pulo Market as treatment markets (traditional market which is close to the modern retail), Lenteng Agung Market as control market (traditional markets which is far from modern retail). This research uses t-test, chi-square test and ordinal logistic regression. The existence of modern retail affect the profit of traditional market traders changes in DKI Jakarta. The closer distance the traditional market to the modern retail, the more chance of traditional market traders to decrease their profit
Keyword: t-test, chi-square test, ordinal logistic regression, profit, performance, characteristics

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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