Judul: Pengaruh Social Media Marketing terhadap Brand Loyalty dan Keputusan Pembelian Popolo Coffee Bogor
Abstrak: Pengguna media sosial di Indonesia yang terus meningkat dimanfaatkan oleh pelaku usaha bidang makanan dan minuman khususnya kafe untuk menerapkan social media marketing. Perusahaan berupaya meningkatkan promosi melalui media sosial untuk meningkatkan jumlah konsumen yang akan meningkatkan kesetiaan konsumen terhadap brand yang dimiliki oleh perusahaan. Popolo Coffee merupakan kafe terbaik di Kota Bogor dengan nilai 4.4 dari 5.0 dan memiliki pengikut instagram terbanyak dibandingkan dengan kafe lain yang ada di Kota Bogor. Tujuan penelitian ini adalah untuk (1) Mengidentifikasi karakteristik konsumen pada Popolo Coffee, (2) Menganalisis pengaruh social media marketing terhadap brand loyalty dan keputusan pembelian Popolo Coffee, (3) Menganalisis pengaruh brand loyalty terhadap keputusan pembelian Popolo Coffee. Metode yang digunakan dalam penelitian ini adalah analisis deskriptif dan SEM-PLS. Hasil penelitian menunjukan bahwa social media marketing memiliki pengaruh positif dan signifikan terhadap brand loyalty, social media marketing tidak berpengaruh terhadap keputusan pembelian, dan brand loyalty berpengaruh positif dan nyata terhadap keputusan pembelian.
Keyword: brand loyalty, keputusan pembelian, SEM-PLS, social media marketing

Judul: The Effect of Social Media Marketing on Purchase Decision of Janji Jiwa Coffee in Bogor City
Abstrak: Seiring berkembangnya waktu, semakin pesat persaingan bisnis yang harus dihadapi. Salah satu usaha yang dapat dilakukan dalam mempromosikan produk yaitu melalui social media atau yang bisa disebut Social Media Marketing. Salah satu bisnis yang melakukan pemasaran melalui social media adalah Kopi Janji Jiwa. Tujuan utama dari penelitian ini yaitu menganalisis pengaruh social media marketing terhadap keputusan pembelian Kopi Janji Jiwa di Kota Bogor. Pengumpulan data dilakukan dengan penyebaran kuesioner kepada 100 pengguna social media yang pernah terpapar social media marketing Kopi Janji Jiwa dan berlokasi di Kota Bogor. Analisis data dilakukan dengan menggunakan metode analisis deskriptif dan Structural Equation Modelling Partial Least Square (SEM PLS). Hasil penelitian menunjukkan bahwa Social Media Marketing berpengaruh positif dan signifikan terhadap keputusan pembelian produk Kopi Janji Jiwa di Kota Bogor., As time develops, the business competition that must be faced is getting faster. One of the efforts that can be done in promoting products is through social media or what can be called Social Media Marketing. One of the businesses that do marketing through social media is Janji Jiwa Coffee. The main aim of this study is analyzing the effect of social media marketing on purchasing decisions of Janji Jiwa Coffee in the city of Bogor. The Data collection was carried out by distributing questionnaires to 100 social media users who had been exposed to the Janji Jiwa Coffee social media marketing and located in the city of Bogor. Data analysis was performed using descriptive analysis methods and Structural Equation Modeling Partial Least Square (SEM PLS). The results of the study indicate that Social Media Marketing has a positive and significant effect on purchasing decisions for Janji Jiwa Coffee products in the city of Bogor.
Keyword: purchase decision, Structural Equation Modelling (SEM), social media marketing

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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