Judul: Studi keragaman fenotipik dan pendugaan jarak genetik antar domba lokal di Indonesia
Abstrak: This research was to study the morphological characteristic and estimating the genetic distance between local sheep in Indonesia with discriminant and canonical analyses. Observed sheep breeds were thirrtailed sheep from Jonggol (Bogor), Gamt sheep h m Ma~gawati (West Java) and fat-tailed sheq, h m Madura Island, Lndramayu (Central Java), Sumbawa Island, Rote Island, Kisar Island (Maluku) and Donggala Island. The number of sheep were randomly collected h m local farmers for 533 heads and h m unit of ranch was 285 heads. Body dimension studied were body weight, body length, wither height, chest width, chest depth, chest circumference, skull length, skull width, skull height, tail lenght, tail width, ear length and ear width.
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Judul: Identifikasi keragaman DNA mikrosatelit lokus CSSM018, ILSTS054 dan IDVGA-30 pada domba lokal
Abstrak: The objectives of this research were (1) to determine genetic variation, (2) to analyze genetic differentiation and (3) genetic distance of local sheep. The blood samples were collected from 96 heads local sheep from 8 regions. Three pairs of primers were used to amplify three loci microsatellites DNA by Polymerase Chain Reaction (PCR) technique. The result showed that the alleles distribution were various for all breeds. CSSM018 locus was the most various allele for all breeds. d allele of CSSM018 locus was found on Madura Fat Tail sheep and a allele of IDVGA-30 locus was founded on Donggala and Madura Fat Tail sheep. Another hand, b allele of ILSTS054 was founded on Margawati Medium Tail Sheep. The highest frequency of allele was a allele of ILSTS054 locus for each breeds. They were 79,27%, 79,17% and 77,08%, respectively. The highest of heterozygosity (h) were 0,5607, 0,5405 and 0,3768 for CSSM018, IDVGA-30 and ILSTS054 loci, respectively. Average heterozygosity (H) for Fat Tail sheep, Medium Fat Tail Sheep and Thin Tail sheep were 0,4694, 0,4645 and 0,4686, respectively. The genetic deferentiation of Fat Tail sheep, Medium Tail sheep and Thin Tail sheep were 0,1497, 0,1235 dan 0,3858, respectively. Geneticly, the Thin Tail sheep was close to Medium Tail sheep (D = 0,7558), but Thin Tail sheep was far to Fat Tail sheep (D = 0,801 1). Keywords: Indonesian local sheep, Microsatellite, Genetic variation
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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