Judul: Pengaruh Social Media, E-WOM, Customer Knowledge, dan Customer Experience Terhadap Purchase Decision Produk Fashion Online Zalora
Abstrak: Perkembangan teknologi informasi yang semakin pesat membuat masyarakat tidak bisa dijauhkan dengan teknologi internet. Penggunaan social media di Indonesia yang terus meningkat membuat masyarakat sering menggunakan social media sebagai media komunikasi dan informasi. Pada zaman teknologi seperti ini masyarakat lebih memilih berbelanja secara online melalui platform e-commerce. Pada saat ini persaingan e-commerce semakin ketat di Indonesia. Zalora harus meningkatkan keunggulan dalam bersaing dengan e-commerce lainnya untuk menarik banyak konsumen. Tujuan dari penelitian ini adalah mengidentifikasi karakteristik konsumen Zalora dan menganalisis pengaruh social media, electronic word of mouth, customer knowledge, dan customer experience terhadap purchase decision pada konsumen Zalora di Jabodetabek dalam pembelian kategori produk fashion. Responden pada penelitian ini sebanyak 190 responden. Teknik penentuan sampel dilakukan dengan menggunakan non probability sampling jenis purposive sampling. Teknkik analisis data yang digunakan adalah analisis deskriptif dan SEM-PLS. Hasil dari analisis SEM-PLS menunjukan bahwa social media, customer knowledge, dan customer experience berpengaruh positif terhadap purchase decision. Customer knowledge memiliki pengaruh yang paling tinggi pada purchase decision.
Keyword: social media, electronic word of mouth, customer knowledge, customer experience, purchase decision

Judul: The Effect of Virtual Try-On Features and Brand Image on Purchase Decisions of Cosmetic Products on  E-Commerce by Female Consumers in Jabodetabek
Abstrak: Peningkatan penggunaan internet di Indonesia mendorong konsumen untuk membeli kosmetik secara online melalui e-commerce. Perkembangan industri e-commerce memberikan peluang bagi usaha kosmetik untuk mengoptimalkan strategi pemasaran inovatif. Namun, persepsi negatif mengenai ketidaksesuaian produk antara gambar dan kondisi asli sering menghambat konsumen dalam mengambil keputusan pembelian di e-commerce sehingga diperlukan strategi pemasaran seperti penggunaan fitur virtual try-on dan penguatan brand image. Penelitian ini bertujuan untuk menganalisis pengaruh antara fitur virtual try-on dan brand image terhadap keputusan pembelian produk kosmetik pada e-commerce di Jabodetabek. Penelitian dilakukan pada bulan Maret 2024 hingga Mei 2024. Penelitian ini menggunakan data primer dan data sekunder yang dianalisis menggunakan analisis deskriptif dan analisis SEM-PLS dengan sampel sebanyak 195 responden. Metode penarikan sampel menggunakan teknik purposive sampling. Hasil penelitian menunjukkan bahwa virtual try-on dan brand image berpengaruh positif dan signifikan terhadap keputusan pembelian., The increased use of the internet in indonesia encourages consumers to purchase cosmetics online through e-commerce. The development of the e-commerce industry provides opportunities for cosmetic businesses to optimize innovative marketing strategies. However, negative perceptions about the discrepancies between product images and actual conditions often hinder consumer’s purchasing decisions on e-commerce, requiring marketing strategies like virtual try-on features and brand image enhancement. This research aim to analyze the effect of virtual try-on features and brand image on the purchasing decision of cosmetic products on e-commerce in Jabodetabek. The study was conducted from March 2024 to May 2024. The data used in this study are primary data and secondary data which were analyzed using descriptive analysis and SEM-PLS with a sample of 195 respondents. The sampling method used purposive sampling technique. The result show that virtual try-on and brand image both positively and significantly impact purchasing decision.
Keyword: brand image, e-commerce, keputusan pembelian, virtual try-on

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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