Judul: Perubahan Garis Pantai Selatan Jawa Kabupaten Kebumen, : Jawa Tengah
Abstrak: The study of shoreline changes during the years 2002 - 2012 was conducted in the South Coast of Kebumen, Central Java, using a principle of sediment budget on a cell along the coast. Alongshore sediment transport calculations was done by considering the influence of the wind as the main generating waves in the deep ocean. Sediment transport calculation results showed that the dominant sediment transport was to the east at the time of the waves coming from the southwest and west and to the west when dominant waves propagated from the southeast. However, in general the dominant sediment transport was to the west. The comparison of the shoreline profile between of model results and satellite imagery showed similarity. The difference mainly occurs in the curving shape of the coasline, which probably due to external factor such as human activities which were not considered in the model. The dominant processes occurring on the study area was abrasion or deterioration along the coast. The results showed that abrasion value was greater than the accretion, value i. e., abrasion was around 86.45 meters and accretion was about 74.21 meters.
Keyword: shoreline changes., waves, sediment transport, accretion, abrasion

Judul: Coastline Change Using Landsat Satellite Imagery on the North Coast of Java, Banten
Abstrak: Perubahan garis pantai yang disebabkan abrasi dan akresi akan menunjukkan kecenderungan perubahan garis pantai yang terkikis atau bertambah. Deteksi perubahan garis pantai menggunakan teknologi penginderaan jauh merupakan salah satu metode observasi yang dapat dilakukan secara multi temporal. Tujuan penelitian untuk mengetahui perubahan garis pantai dengan menggunakan citra satelit di Pantai Utara Jawa, Banten dengan metode Digital Shoreline Analysis System (DSAS). Proses analisis data meliputi empat tahapan, yaitu pengolahan citra awal, ekstraksi garis pantai, perhitungan perubahan garis pantai, dan pengolahan data pendukung. Kecepatan angin dominan berasal dari arah barat yang berkisar antara 3,60-5,70 m/s. Pergerakan arus di daerah kajian menunjukkan pergerakan arus bergerak dari timur menuju barat. Nilai tinggi gelombang mencapai 0,21 m dengan periode gelombang 0,01-3,09 m/s. Hasil perhitungan nilai bilangan formzhal menghasilkan nilai tipe pasang surut sebesar 4,05 yang termasuk ke dalam tipe pasang surut tunggal. Abrasi terbesar terjadi di Kecamatan Mauk dengan kemunduran garis pantai sebesar 928,55 m, sedangkan akresi terbesar terjadi di Kecamatan Kemiri dengan penambahan garis pantai sebesar 380,99 m. Kata Kunci : Abrasi, Akresi, DSAS, Ekstraksi, Penginderaan Jauh
Keyword: Abrasion, Accretion, DSAS, Extraction, Remote Sensing

Judul: Isolasi dan purifikasi inhibitor RNA helikase virus hepatitis C dari bakteriosin bakteri asam laktat S34
Abstrak: Target molecular therapy is one of method to prevent hepatitis C virus which was developed recently. NS3 Helicase/RNA helicase hepatitis C virus inhibition using inhibitory peptide are target in molecular therapy. Bacteriocin are inhibitory peptides which can inhibit hepatitis C virus through inhibition of NS3 helicase. Bacteriocin is a peptide which is produced by lactic acid bacteria. The aim of this research were to isolate and to purify bacteriocin from S34 lactic acid bacteria which has high activity to inhibit RNA helicase of hepatitis C virus. S34 lactic acid bacteria were identified using 16S RNA amplification and DNA sequencing identification of S34 lactic acid bacteria was Lactobacillus plantarum WCFS1. The bacterial growth reached logaritmic phase at 7 hours and stationary phase at 10 hours. Bacteriocin were isolated and purified by ammonium sulphate precipitation with 80% saturation, gel filtration chromatography, and characterization of bacteriocin through molecular weight analysis and measured protein concentration. Bacteriocin from S34 lactic acid bacteria were included in 2nd class bacteriocin, had 64.20 % of inhibition against RNA helicase hepatitis C virus, had molecular weight about 1.7-4.2 kDa, and specific activity in the amount of 2.84 x 106 U/mg.
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