Judul: Pengaruh Kekuatan Sosial Teman Sebaya terhadap Keinginan Pembelian Produk Fesyen pada Remaja di Kabupaten Bogor
Abstrak: The teens market is a potential market segment that plays a big role in growing the fashion industry. During adolescence, peers have a big influence to their purchase intention. Therefore, it becomes very important for marketers to know how peers influence teenagers in terms of purchase intention. This research aims to analyze whether there is a significant influence from peer’s social power (expert power, legitimate power, referent power, reward power, coercive power) to teenager’s purchase intention for fashion products. The method used in this research is using linear regression analysis which was computed using SPSS 19 software. The results of this research show that expert power,reward power, and legitimate power significantly influence teenager’s intention to buy fashion products.
Keyword: Bogor Agricultural University (IPB), teenagers., social power, purchase intention, peers, fashion products

Judul: Pengaruh Kelompok Acuan dan Pengetahuan terhadap Minat Beli Produk Pangan IPB pada Mahasiswa Program Sarjana
Abstrak: Bogor Agricultural University (IPB) is one of the university that produce many inovation product both in agriculture technology and foods. The purpose of this study was to analyze the influence of reference groups and knowledge toward intention to buy IPB’s food products on undergraduate students. The location of the research was in IPB Dramaga Bogor, West Java, in May 2012. Sampling technique that conducted in this research was simple random sampling and involved 400 students from all faculties in IPB as samples/participant. The data were analyzed using Chi-Square test, Pearson correlation, simple linear regression, and multiple linear regression. The results showed that one of the reference groups that most widely chosen was close friend (33,6%). More than half of the students were in a good enough categorized of knowledge (59,0%) and intention to buy (78,2%) IPB’s food product. Based on Pearson correlation test, reference groups had no correlation with knowledge (p=0,364) and intention to buy (p=0,376). However, knowledge had a positive and significantly correlated with intention to buy IPB’s food product (p=0,043). The result of regression test showed that intention to buy IPB’s food product effected by income (p=0,002) and knowledge (p=0,043)
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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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