Judul: The Influences of Social Media Exposure and Emotional Intelligence on Adolescent Aggressivity in Bogor City
Abstrak: Agresivitas yang seringkali muncul di kalangan remaja menimbulkan berbagai bentuk kenakalan remaja seperti tawuran, bullying, berkelahi, dan sebagainya. Selain itu, paparan media sosial berperan besar dalam meningkatkan agresivitas remaja. Oleh karena itu, kecerdasan emosi digunakan sebagai penahan remaja untuk menurunkan potensi agresivitas. Penelitian ini bertujuan untuk menganalisis pengaruh paparan media sosial dan kecerdasan emosi terhadap agresivitas remaja SMA di Kota Bogor. Desain eksplanatori digunakan dalam penelitian ini. Penelitian dilakukan di Kota Bogor dengan kriteria contoh adalah remaja SMA usia 15-18 tahun yang dipilih secara purposive di sekolah terpilih. Jumlah contoh remaja sebanyak 264 orang. Penelitian ini menegaskan bahwa usia ibu dan paparan media sosial dengan berbagai bentuk kekerasan dan adalah variabel yang memberikan pengaruh paling kuat terhadap agresivitas remaja., Aggressivity that often appears among adolescents leads to various forms of juvenile delinquency such as brawls, bullying, fighting, and so on. In addition, exposure to social media plays a major role in increasing adolescent aggressivity. Therefore, emotional intelligence is used as a barrier for adolescents to reduce potential aggressivity. This study aims to analyze the influence of social media exposure and emotional intelligence on the aggressivity of high school adolescents in Bogor City. Explanatory design was used in this study. The research was conducted in Bogor City with the sample criteria being high school adolescents aged 15-18 years who were purposively selected in selected schools. The number of sample adolescents was 264 people. This study confirms that mother’s age and exposure to social media with various forms of violence are the variables that have the strongest influence on adolescent aggressivity.
Keyword: adolescents, aggressivity, emotional intelligence, social media exposure

Judul: The Influence of Parenting Style and Friendship Quality on Aggressivity among Adolescents in Bogor City
Abstrak: Agresivitas merupakan kecenderungan yang mengarah pada tingkah laku individu dalam bentuk tindak kekerasan secara fisik atau verbal dan dilakukan dengan tujuan untuk melukai atau menyakiti orang lain. Penelitian ini bertujuan untuk menganalisis pengaruh karakteristik remaja, karakteristik keluarga, gaya pengasuhan, dan kualitas pertemanan terhadap agresivitas remaja di Kota Bogor. Penelitian berlokasi di empat SMA di Kota Bogor yang ditentukan secara purposive. Penelitian melibatkan 229 siswa yang berasal dari sekolah yang mewakili kecamatan di tengah kota dan kecamatan di pinggiran kota. Hasil uji hubungan menemukan bahwa gaya pengasuhan komposit berhubungan negatif signifikan dengan agresivitas. Dimensi kehangatan gaya pengasuhan ditemukan berhubungan dengan kualitas pertemanan komposit. Hasil uji hubungan juga menemukan bahwa dimensi konflik kualitas pertemanan berhubungan dengan agresivitas. Hasil uji pengaruh model 1 menemukan hanya gaya pengasuhan yang secara konsisten memberikan pengaruh lebih besar terhadap agresivitas remaja. Sementara itu, hasil uji pengaruh model 2 menemukan adanya pengaruh yang lebih besar dari usia ibu, dimensi permusuhan, ketidakpedulian, dan konflik terhadap agresivitas remaja dibandingkan variabel lain yang diteliti pada model regresi.
Keyword: gaya pengasuhan, kualitas pertemanan, perilaku agresif, remaja, teman  sebaya

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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