Judul: The Effect of Perceived Price and Perceived Quality on Consumer Satisfaction of Brand A Local Cosmetic Products in Generation Z.
Abstrak: Meningkatnya tren berbelanja online perlu diiringi dengan perilaku konsumen yang cerdas saat membeli barang dan jasa dengan mempertimbangkan beberapa hal, dari segi kebutuhan, keinginan, dan yang dapat memberikan kepuasan. Penelitian ini bertujuan untuk menganalisis hubungan dan pengaruh persepsi harga dan persepsi kualitas terhadap kepuasan konsumen produk kosmetik lokal merek A pada generasi Z. Penelitian ini menggunakan menggunakan kuesioner online melalui google form dengan jumlah responden sebanyak 318 orang. Data yang diperoleh diolah menggunakan Microsoft Excel 2013, SPSS, dan LISREL. Hasil uji hubungan menunjukkan bahwa usia dan pendidikan terakhir berhubungan positif dan signifikan terhadap persepsi kualitas. Frekuensi pembelian produk kosmetik lokal merek A juga ditemukan berhubungan positif dan signifikan dengan persepsi harga, persepsi kualitas, dan kepuasan konsumen. Hasil uji pengaruh menunjukkan bahwa persepsi harga berpengaruh positif dan signifikan terhadap persepsi kualitas dan kepuasan konsumen. Persepsi kualitas juga berpengaruh positif dan signifikan terhadap kepuasan konsumen.
Keyword: consumer satisfaction, cosmetic product, generation Z, perceived price, perceived quality

Judul: The Influence of Brand Trust and Satisfaction towards Consumer  Loyalty of a Local Cosmetic Products Brand A in Generation Z
Abstrak: Peningkatan permintaan produk kosmetik pada masa pandemi Covid-19 mendorong perusahaan agar dapat meningkatkan kepercayaan dan kepuasan konsumen sehingga konsumen tetap loyal terhadap satu merek produk, termasuk merek A sebagai merek produk kosmetik lokal terkenal. Penelitian ini bertujuan untuk menganalisis pengaruh kepercayaan merek dan kepuasan terhadap loyalitas konsumen produk kosmetik lokal merek A pada generasi Z. Responden pada penelitian ini sebanyak 318 orang. Data dikumpulkan melalui kuesioner online menggunakan Google Forms. Data yang diperoleh diolah menggunakan Microsoft Excel 2010, SPSS versi 25, dan LISREL 8.80. Hasil uji hubungan menunjukkan bahwa jenis kelamin, usia, pendidikan terakhir, dan pendapatan perbulan berhubungan positif dan signifikan dengan kepercayaan merek. Usia, pendapatan perbulan, frekuensi pembelian produk kosmetik lokal merek A, jenis produk kosmetik lokal merek A yang pernah dibeli, dan lama penggunaan produk kosmetik lokal merek A juga ditemukan berhubungan positif dan signifikan dengan loyalitas konsumen. Hasil uji pengaruh menunjukkan kepercayaan merek berpengaruh positif dan signifikan terhadap kepuasan konsumen dan loyalitas konsumen. Kepuasan konsumen juga berpengaruh positif dan signifikan terhadap loyalitas konsumen., The increasing demand for cosmetic products during the Covid-19 pandemic has encouraged companies to increase consumer trust and satisfaction so that consumers remain loyal to one product brand, including brand A as a well-known local cosmetic product brand. This study aims to analyze the influence of brand trust and satisfaction towards consumer loyalty of a local cosmetic products brand A in generation Z. Respondents in this study were 318 people who were collected by voluntary sampling. Data was collected through an online questionnaire by using Google Forms. The data obtained were processed using Microsoft Excel 2010, SPSS version 25, and LISREL 8.80. The results of the relationship test showed that gender, age, latest education, and monthly income were positively and significantly related to brand trust. Age, monthly income, frequency of purchasing local cosmetic product brand A, types of local cosmetic product brand A that have been purchased, and duration of use of local cosmetic product brand A were also found to be positively and significantly related with consumer loyalty. The results of the influence test showed that brand trust has a positive and significant influence towards consumer satisfaction and consumer loyalty. Consumer satisfaction also has a positive and significant influence towards consumer loyalty.
Keyword: brand trust, consumer loyalty, consumer satisfaction, cosmetic products, generation z

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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