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: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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