Judul: Pengaruh Electronic Word of Mouth dan Brand Image terhadap Keputusan Pembelian Kosmetik Somethinc pada E-Commerce di Jabodetabek
Abstrak: Kebutuhan akan produk kosmetik berakibat pada tinginya pengguna kosmetik di Jabodetabek. Pada tahun 2022 preferensi merek lokal mencapai 54%. Somethinc sebagai salah satu merek kosmetik lokal menduduki peringkat keempat sebagai kosmetik dengan pengguna terbanyak pada 2022. Meningkatnya pengguna internet di Indonesia dimanfaatkan juga untuk melakukan jual beli dengan memanfaatkan e-commerce. E-commerce sendiri menjadi media pembelian kosmetik terbesar pada 2022. Namun penjualan Somethinc tidak menentu dan industri kosmetik yang bertambah meningkatkan persaingan. Sehingga diperlukan strategi untuk meningkatkan penjualan. Penelitian ini bertujuan untuk menganalisis electronic word of mouth dan brand image terhadap keputusan pembelian kosmetik Somethinc pada e-commerce di Jabodetabek. Penelitian ini menggunakan data primer dengan menyebar kuesioner dan data sekunder yang bersumber dari buku, jurnal, dll. Metode penarikan sampel menggunakan teknik quota sampling dan diolah menggunakan metode analisis deskriptif dan SEM-PLS. Hasil penelitian menunjukkan adanya pengaruh yang positif dan signifikan antara electronic word of mouth dan brand image terhadap keputusan pembelian produk kosmetik Somethinc pada e-commerce di Jabodetabek., The need for cosmetic products results in a high number of cosmetic users in Jabodetabek. In 2022, the preference for local brands reached 54%. Somethinc as one of the local cosmetic brands is ranked fourth as the cosmetic with the most users in 2022. The increasing number of internet users in Indonesia is also used to buy and sell by utilizing e-commerce. E-commerce itself will be the largest medium for purchasing cosmetics in 2022. However, Somethinc's sales are erratic and the growing cosmetics industry increases competition. Therefore a strategy is needed to increase sales. This study aims to analyze electronic word of mouth and brand image on purchasing decisions for Somethinc cosmetics in e-commerce in Jabodetabek. This study uses primary data by distributing questionnaires and secondary data sourced from books, journals, etc. The sampling method uses quota sampling technique and is processed using descriptive analysis method and SEMPLS. The results showed a positive and significant influence between electronic word of mouth and brand image on purchasing decisions for Somethinc cosmetic products in e-commerce in Jabodetabek.
Keyword: brand image, e-commerce, electronic word of mouth, 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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