Judul: The study of external characters and microsatellite dna variation of pesisir cattle in West Sumatera
Abstrak: The objectives of this study were (I) to study the variability of body size, colour and colour coat pattmq (2) to generate the abt~baseo f the body weight and body sizes, and (3) to study the relationship and grouping among Pesisir Sdatan, Padaog Pariaman and Agam subpopulation. The study was also to describe the genetic variability between Pesisir Selatan and Agam subpopulations of Pesisir cattle in West Sumatera based on the pohorphism of six DNA microsatellites loci. Quantitative and qualitative data of the cattle were collaed at Pesisir Selsrtan, Padmg Pariaman and Agam di-cts. In addition, b l d samples were collected h m Pesisir Selatan and Padang Pariaman districts of Wst Sumatera provinces. The whole data were collected during February to July 2002. The six DNA microsatelIites foci polymorphism was analyzed at the Molecular Biology Labomtory of the Biological Study Center, Bogor Agricultural University from August to December 2003. Body measurements and M y weight data were analized using the disgiptive statistics, dimimhmt function analysis, and canonical correlation Coat colour data were malized using disgiptive statistics. Microsatellites alleles data within and among the six Ioci were presented according to alleles number, distribution, frequencies, and heterozigosities. Dischimmt function anaIysis showed that the similarities among the three subpopulations were 86.36% 70.27%, and 39.69% for Pesisir SeIatan, Padang Pariaman aod Agam subpopulations respectively. Canon- wrrelation analysis indicated that body weight, withers heigth, hip heigth, head width, and head length has the higher total csnonic simdme among the body measurements. The result also showed that West Sumha Pesisir attie showed a solid coat wlour pattern with five &bate colour, and dominated by red sand. The PCR analysis showed that the average number of allele of the six microsatellite loci were 9.6 and 1 1, and the heteroigosity average were 0.8573 1 0.00014 and 0.8738 =k 0.001312 for Pesisir Selatan and Padang Pariaman subpopuIation r e v e l y . The body rn-ernemts of West Sumatera Pesisir cattle showed a high variability. The study also indimted that Pesisir Selatan and Agam subpopulations showed a closer retationship than with the Padang Pariaman subpopulation. Witbers height, hrp height, head width, and herad length can be used to differentiate the West Sumatera Pesisir cattle subpopulations.
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Judul: Penggolongan morfometrik jantan sapi bali, peranakan ongole dan pesisir melalui analisis diskriminan fisher, wald anderson dan jarak minimum D2 Mahalanobis
Abstrak: Indonesian local cattle as local cattle genetic resources require special attention for conservation purpose as well as meat-producing. Study on the morphometric characteristics of the local cattle Indonesia is one of the scientific information that can be used as the basic for development in conservation efforts. This study aimed was at characteristing the body size of male Bali, PO and Pesisir cattles. The experiment was conducted at Mitra Tani Farm; Rumah Pemotongan Hewan (RPH) Pancoran Mas, Depok and Balai Penyuluhan dan Peternakan Lengayang South Coastal District of West Sumatera. The animals observed were 32 Bali, 46 PO and 17 Pesisir cattles. Measurements include body length, chest width, chest depth, hearth girth, hip height, hip width, wither height, cannon circumference, thurl width, and rump length. Data were analyzed using descriptive analysis, T2 Hotelling analysis, Discriminant Fisher analysis, Wald-Anderson classification and minimum distance D2 Mahalanobis. The result of the analysis of T2 Hotelling and Discriminant Fisher analysis showed differences in body measurements of male PO vs Pesisir cattles, PO vs Bali cattles and Bali vs Pesisir cattles. Classification of Wald-Anderson analysis shows that there were classification error between PO vs Pesisir catlles and Bali vs Pesisir cattles, while the male PO vs Bali in the same classification. Minimum distance D2 Mahalanobis analysis showed the formation of the distance nonsimilaritas morphometric measurements bodies of PO vs Bali catlles for 5.379, PO vs Pesisir cattels for 5.383 and Bali vs Pesisir cattles for 5.54. Dendogram nonsimilaritas morphometric provided distribution of male body size cattle. Male PO and Bali cattles from one group and one male Pesisir cattle formed another group. Conclusions obtained in this study is the discovery of the classification of male Bali, PO and Pesisir cattles based on body measurements, thus providing information morphometric measures of closeness between a male cattle body.
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Judul: Pemanenan Energi Listrik dari Kincir Angin Vertikal
Abstrak: Usaha pemanenan energi angin di Indonesia masih sedikit. Sampai Tahun 2016 hanya 3.54 MW alat pemanenan energi angin yang sudah terpasang. Kendala utamanya ialah dibutuhkan investasi yang besar untuk membuatnya. Pembuatan kincir angin dengan ukuran yang lebih kecil dengan bahan yang dapat dibeli di pasar lokal menjadi solusi agar pembuatan kincir angin lebih ekonomis. Pembuatan kincir vertikal tipe Savonius dapat menjadi solusinya. Kincir vertikal Savonius dapat beroperasi pada kecepatan < 3 m/s dan ketinggian < 50 m. Kincir angin ini terdiri dari tiga sistem, yaitu generator, rotor kincir dan transmisi pulley-belt. Generator dibuat dari modifikasi motor AC dan magnet neodymium. Rotor kincir dibuat dari pipa PVC 4”, pipa alumunium ¾”, dan papan polikarbonat. Transmisi pulley-belt dibuat dari plastik dan karet. Kincir ini membutuhkan gaya minimal 3 N untuk dapat berputar atau torsi minimalnya 0.75 Nm. Kecepatan angin yang dibutuhkan untuk merotasikannya sebesar 1.9 m/s. Daya maksimal yang dapat dihasilkan ialah 5.76 watt berupa tegangan sebesar 36 volt dan arus 160 mA.
Keyword: energi terbarukan, generator, motor AC, sudu Savonius