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: Identification Shark Fin Morphologically and Biomolecular with Partial COI Gene
Abstrak: Ikan hiu memiliki permintaan pasar yang tinggi khususnya terhadap bagian siripnya. Faktor tersebut memicu terjadinya IUU (Illegal, Unreported and Unregulated) fishing terhadap hewan Kelas Elasmobranchii ini. Beberapa jenis hiu di Indonesia telah masuk ke daftar merah IUCN. Identifikasi terhadap hiu sulit dilakukan karena hiu dijual tidak dalam keadaan utuh dan memiliki kemiripan secara morfologi, umumnya dalam bentuk sirip. Penelitian ini bertujuan mengidentifikasi jenis sirip ikan hiu yang didapatkan di Muara Baru, Jakarta. Proses analisis meliputi identifikasi morfologi dan molekuler dengan teknik DNA barcoding menggunakan marka gen parsial COI. Jumlah sampel pada penelitian ini sebanyak 4 buah sirip hiu yang berbeda secara morfologis. Pada penelitian ini sampel sirip ikan hiu kode SP281 secara morfologis tidak dapat dipastikan, tetapi secara molekuler dapat dipastikan memiliki kemiripan dengan Sphyrna lewini dengan nilai identify sebesar 99,85%. Penelitian ini berhasil mengidentifikasi 4 spesies yang berbeda, yaitu Carcharhinus albimarginatus, Carcharhinus amblyrhynchoides, Sphyrna lewini, dan Prionace glauca. Berdasarkan penelitian ini DNA barcode dapat mempermudah proses identifikasi dan mencegah kesalahan identifikasi. Aplikasi dalam pengelolaan adalah membantu melindungi jenis ikan hiu yang termasuk ke dalam daftar merah IUCN lolos dari perairan Indonesia dan siripnya diekspor keluar negeri. Kata kunci: Morfologi, COI, sirip hiu, konservasi
Keyword: COI, conservation, morphological, shark fin

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4