Judul: Karakterisik Fenotip Morfometrik dan Genotip RAPD (Random Amplified Polymorphic DNA) Ikan Betok Anabas testudineus (Bloch, 1792)
Abstrak: The identification of phenotype and genotype is needed for mapping the population structure geographically of a fish species in the waters territory. The purpose of this research was to analyze the genetic variability based on the morphometric phenotype characteristics and RAPD genotypes of climbing perch fish population of Kalimantan, Java and Sumatera. Characterization of phenotypes were conducted using a method of morphometric truss and typing of genotype by using three primers of RAPD (OPA-07, OPA-02, and OPC 05). The polymorphism level and heterozygosity of climbing perch fish population of Kalimantan was higher than the population of Java and Sumatera, wich reached 39,29% and 0,16. The genetic distance between climbing perch fish population of Kalimantan, Java and Sumatera ranged from 0,17 to 0,39. The population of Kalimantan showed the similarity of morphometric truss with Sumatera population about 49,97%, while with the population of Java was 24,96%.
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Judul: Karakterisasi Ragam Genetik Ikan Sepat ( Trichogaster Pectoralis) Berdasarkan Analisis RAPD ( RAndom Amplified Polymorphic DNA) dan Morfometrik
Abstrak: Penelitian ini bertujuan untuk mengidentifikasi keragaman genetik ikan sepat yang berasal dari tiga lokasi berbeda yaitu Jawa (Tasikmalaya), Sumatra (Jambi) dan Kalimantan (Kalimantan Selatan) menggunakan metode RAPD dan karakter morfometrik. Hasil menunjukkan bahwa polimorfisme dan heterosigositas tertinggi yaitu populasi ikan sepat Kalimantan (26,67%) dan (0,12). Ukuran fragmen pada setiap populasi berkisar antara 125-2000 bp. Jarak genetik yang paling jauh adalah populasi Jawa dengan Kalimantan (0,343) sedangkan jarak genetik yang paling dekat adalah populasi Sumatra dengan Jawa (0,257). Berdasarkan uji karakter morfometrik diketahui terdapat 3 karakter yang berbeda nyata yaitu B2 (jarak antara awal sirip dorsal dengan akhir sirip dorsal), B6 (jarak antara akhir sirip dorsal dengan sirip pektoral) dan C2 (jarak antara sirip pektoral dengan sirip ventral). Hasil analisis fungsi kanonikal menunjukkan karakter morfologi ikan sepat Kalimantan memiliki nilai indeks kesamaan dengan Sepat Jawa sebesar 20%.
Keyword: Snake skin fish, Genotype, Morfometric, RAPD, GeneticDistance

Judul: Pembuatan Film Tipis Cu2ZnSnS4 sebagai Lapisan Penyerap Cahaya pada Sel Surya Menggunakan Metode Elektrodeposisi
Abstrak: Thin film of Cu2ZnSnS4 (CZTS) is an alternative semiconductor used as light absorber layer on solar cell. CZTS can replace silicon that commonly used as commercial semiconductor. The advantage of using CZTS as absorber layer is due to the abundance of its chemical composer on earth, and its high value of absorption coefficient. The absorber layer was made by using electrodeposition method on ITO glass substrates. The films were deposited at room temperature using potentiostatic mode with a potential of –1.05 V for 30, 45, and 60 minutes. After that, the films were annealed at two different temperatures, 180 ºC and 500 °C, for 45 minutes in N2/H2S atmosphere. Based on X-ray diffraction analysis, the polycrystalline thin film obtained fall into kesterite crystal phase. This type of crystal was obtained when the CZTS was annealed at 500 °C in H2S/N2 atmosphere. The value of optical band gap energy for the CZTS thin film was 2.2 eV with the film thickness about 1.228–6.366 μm. The sample of CZTS with electrodeposition time of 45 minutes and annealing temperature of 500 °C showed the best result and in conformity with absorber layers criteria for solar cells.
Keyword: semiconductor, ITO glass, CZTS thin film, electrodeposition