Judul: DNA Barcoding dan Rekonstruksi Filogenetik Spesies Hiu yang Didaratkan di Pelabuhan Perikanan Pantai Muncar, Banyuwangi, Jawa Timur
Abstrak: Sharks are one of a fisheries commodity that are exploited on a large scale because of their very high economic value. The identification of sharks is very problematic, because specimens has similarity in morphology and mostly have had key diagnostic features removed. This study aimed to identify and to review the status of sharks landed in Muncar Fisheries Landing Site and see the trend of catches in 2012 to 2013, and also to reconstruct the shark species that were landed at South Java fishing port using molecular approaches. The DNA amplification was using Cytochrome Oxidase I locus mitochondrial. A total of 7 species was identified including Alopias pelagicus, Carcharhinus falciformis, C. sorrah, C. amblyrhynchos, Galeocardo Cuvier, Atelomycterus marmoratus, and Spyrna lewini. The diversity of shark species that landed in Muncar during the last 2 years has been decreased. The identified sharks species in this study sites were about 18% of all Indonesian sharks. The result of this study is expected help the Government to manage shark fisheries in Indonesia
Keyword: Muncar, Conservation, Phylogenetic, DNA barcoding, Sharks

Judul: DNA Barcoding dan Analisis Filogenetik Ikan Hiu yang Didaratkan di Pelabuhan Perikanan Samudera Cilacap
Abstrak: Indonesian waters are known to be lived by more than 75 species of shark. Most shark species are now being caught and traded for their body parts, including their fins, liver oil, meat, bones, skin, and eyes. However, trade data on shark in Indonesia is very lack. The identification of a shark fin to species level is very problematic, as morphologically similar species and specimens, which are poorly preserved or have had key diagnostic features removed, can be difficult to identify. Therefore this research was conducted to identify shark species being traded in Cilacap fisheries port, to confirm their conservation status with IUCN redlist and to determine their phylogenetic relationship. The PCR using COI (Cytochrome Oxidase I) was successfully amplified for 32 samples. A total of 10 spesies was identified and 6 clusters of different shark family was revealed. These identified shark were categorized in three IUCN conservation status : vulnerable status (Sphyrna zygaena, Alopias superciliosus, Carcharhinus obscurus, Isurus paucus, and Isurus oxyrinchus), near threatened status (Pseudocarcharias kamoharai, Carcharhinus falciformis, Prionace glauca, and Squalus hemipinnis) and one species in endangered status (Sphyrna lewini). The identification result is important to help government to build shark conservation and trading policy.
Keyword: PPS Cilacap, conservation, species identification, shark, phylogenetic, DNA Barcoding

Judul: Karakteristik Piezoelektrik Film LaxSr₁-xTiO3 di atas Substrat TCO
Abstrak: Studi material perovskite SrTiO3 sudah banyak dilakukan dan menunjukkan sifat feroelektrik, piezoelektrik, kuantum paraelektrik dan superkonduktor yang baik. Dengan penambahan dopant La2O3 diduga menambah performa sifat piezo dan karakteristik lainnya. Karakteristik film LaxSr₁-xTiO3 (LST) dengan variasi x= 0, 0.02, 0.04, 0.06 terbentuk pada suhu annealing 550 oC di atas substrat TCO melalui metode (Chemical Solution Deposition) CSD dan spin coating dengan 700 rpm pada kondisi suhu ruang dan tekanan atmosfer standar. Hasil menunjukkan, semakin banyak pendadah La maka nilai ketebalan film, ukuran rerata kristalit, parameter kisi, transmitansi, nilai konduktivitas (maksimum 589.7 S/cm pada sampel x=0.04 di frekuensi 10 Hz), nilai konstanta tegangan (c) dan muatan (d) piezo semakin meningkat. Dinamika bentuk grafik nilai tegangan (V) dan konstanta regangan mekanik (s) nampak mirip. Nilai V mencapai 0.127 V untuk x=0.06 (beban 50 g). Nilai maksimum c, d, s masing-masing mencapai 20.07 Vm/N, 1.14x10-8 C/N, 13642.71. Nilai band gap untuk x=0, 0.02, 0.04, 0.06 masing-masing 3.21 eV, 3.1 eV, 2.6 eV, 2.4 eV. La2O3 menambah performa sifat piezo, sehingga LST berpotensi sebagai sensor tekanan.
Keyword: CSD method, La2O3, LaxSr1-xTiO3, piezoelectric, TCO