Judul: Prediksi Laju Abrasi Dengan Menggunakan Citra Satelit di Kabupaten Tangerang Provinsi Banten
Abstrak: Shoreline change is the result of a combination of natural processes (waves, tides, currents and sedimentation) and humans. Tangerang regency, as one district that has a long coast until 51 km can not be separated from environmental damage that occurs due to coastal erosion. purpose of this study was to identify the changes that occur in the shoreline along the coastal areas of Tangerang regency by utilizing satellite imagery, Geographic Information Systems. and predict the rate of erosion along coastal areas of Tangerang regency. This study is expected to provide an overview of the condition of coastal areas against the threat of Tangerang regency abrasi. Depend on the result, predictive analysis of Kronjo district has an average erosion rate of 16.3 m / year, abrasion rate of the kemiri is 9,295 m / year, Mauk abrasion average rate of 20.9 m / year, Sukadiri with an average erosion rate of 5.2 m / year, Paku Haji abrasion average rate of 14.3 m / year, in Teluk Naga district average erosion rate of 19.67 m / year and average speed of abrasion on Kosambi is 3.2 m / year. Based on these results indicated mangrove forest damage has occurred, so it is necessary to protect coastal areas handling both made by building a protective beach or in a natural way by planting mangroves.
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Judul: Analisis Perubahan Garis Pantai dengan Menggunakan Citra Satelit Landsat di Pesisir Kabupaten Tangerang, Banten.
Abstrak: Garis pantai dapat berubah secara terus menerus yang disebabkan oleh proses alami maupun aktivitas manusia. Teknologi penginderaan jauh dapat digunakan untuk melakukan pengamatan perubahan garis pantai. Tujuan penelitian ini adalah mengetahui jarak perubahan garis pantai pada tahun 1995-2015 dengan menggunakan citra satelit Landsat serta mengidentifikasi faktor yang mempengaruhinya di pesisir Kabupaten Tangerang, Banten. Ekstraksi garis pantai menggunakan metode single band, band ratio, dan RGB composite. Perhitungan jarak perubahan menggunakan perangkat lunak Digital Shoreline Analysis System (DSAS). Hasil analisis jarak perubahan garis pantai menunjukkan abrasi sebesar 15.9-44.5 m/thn dan akresi sebesar 21.9-101.1 m/thn. Abrasi tertinggi terjadi di Kecamatan Mauk, sedangkan akresi tertinggi terjadi di Kecamatan Teluknaga. Perubahan garis pantai yang terjadi dapat disebabkan dari hantaman gelombang, arus susur pantai (longshore current), adanya alih fungsi lahan mangrove menjadi lahan tambak, dan masukan sedimen dari sungai-sungai di sekitarnya.
Keyword: abrasi, akresi, DSAS, garis pantai, penginderaan jauh

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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