Judul: Analisis Pengaruh In-Store Promotion Terhadap Persepsi Keputusan Impulse Buying Pada Alas Kaki Yongki Komaladi
Abstrak: Impulse buying is the behavior of consumers who make a purchase spontaneously, without planning beforehand. The purpose of this research is to analyze the impulsive consumen behavior of footwear YK and analyzing the influence of in-store promotion on consumer impulse buying perseption decision footwear YK. In-store promotion variables in this research is the purchase with purchase, price discounts, in-store display and personal selling. The analytical method used was a cross-tabulation analysis and multiple linear regression F test results shows that in-store promotion simultaneously influence to consumer decisions of impulse buying on YK footwear. T-test results showed only the purchase with purchase which has positive and significant result toward on decision of impulse buying on Yongki Komaladi Footwear, with a value of sig 0.001 . The coefficient of determination R2 0.178, it’s means the influence exerted by the variables in-store promotion at 17.8%.
Keyword: purchase with purchase., in-store promotion, impulse buying

Judul: Analisis Persepsi Konsumen Terhadap Keputusan Pembelian Alas Kaki Yongki Komaladi
Abstrak: Tujuan penelitian ini adalah untuk mengetahui pengaruh persepsi konsumen terhadap keputusan pembelian alas kaki Yongki Komaladi. Metode analisis yang digunakan adalah analisis regresi linier berganda. Variabel persepsi konsumen dalam penelitian adalah kualitas, harga, citra merek dan promosi penjualan. Hasil Uji F menunjukkan bahwa persepsi konsumen (kualitas, harga, citra merek dan promosi penjualan) secara simultan mempengaruhi keputusan pembelian alas kaki Yongki Komaladi. Hasil uji t menunjukkan bahwa kualitas (sig 0.366) memiliki pengaruh positif dan tidak signifikan terhadap keputusan pembelian alas kaki Yongki Komaladi. Harga (sig 0.014), citra merek (sig 0.059) dan promosi penjualan (sig 0.011) memiliki pengaruh positif dan signifikan terhadap keputusan pembelian alas kaki Yongki Komaladi.
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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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