Judul: The Observation of Size and Shape on Mojosarl, Alabio, Bali, Pegagan, Khaki Campbell and Pekin Ducks.
Abstrak: Ducks were kept to produce eggs and meat. Development of duck in Indonesia was done as traditionally by the farmers on low-land area. Breeds of duck with their characteristics were very important as animal genetic resources. Characterization of breeds by morphological is based information for thdr improvement. The research was conducted at Research Institute for Animal Production, Ciawi, Bogor from January to May 2002. The length of femur, tibia, tarsometatarsus, circumference of tarsometatarsus, length of third digit, wing and maxilla bone of Mojosari, Alabio, Bali, Pegagan, Khaki Campbell and Pekin ducks were measured to observe their body size and shape. Data were analyzed by T-Test (steel and Torrie, 1981) and Principal Component Analysis (PCA) (Gaspersz, 1992).
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Judul: The phenotypic and genetic characterization of alabio duck (Anas platyrhynchos Borneo) in South Kalimantan for it’s conservation and sustainable use
Abstrak: Alabio ducks is one of the local duck in South Kalimantan as egg producers which characterized by high productivity of eggs. The study was carried out in order to describe the phenotypic and genetic characterization of Alabio duck being kept by smallholder farmers. The study was conducted in Hulu Sungai Selatan (HSS), Hulu Sungai Tengah (HST) and Hulu Sungai Utara (HSU), South Kalimantan, animal breeding and genetic laboratory and feed technology and nutrition laboratory, Faculty of Animal Science IPB Bogor. Six hundreds (75 males and 525 females) of Alabio ducks were used in this study with ages ranged from 5.5 to 5 months old, 144 of whole blood samples (71 blood plasma and 72 red blood cells) were collected from HSS, HST and HSU. The observed parameters were quantitative and qualitative traits of Alabio duck, genetic variability and nutrition composition. The quantitative traits (body measurement) and genetic polymorphisms of blood protein were analyzed using principal component analysis (PCA) and descriptive analyses. The results showed that for body size measurement of Alabio ducks from HSS, HST and HSU such as length of back, neck, head and depth head as well as body length could be used as variables discriminantor factor. The blood protein polymorphisms of Alabio duck from HSS, HST and HSU displayed six of genotypes i.e. AA, AB, AC, BB, BC and CC with genes frequencies ranged from 0.2917 to 0.7667, heterozigosity value ranged from 0.407±0.120 to 0.661±0.135 and average heterozigocity value of HSS was 0.643±0.232, HST was 0.638±0.219 and HSU was 0.660±0.209. The genetic distances analysis demonstrated that of Alabio duck from HST had relatively closer distance with HSU (0.0148) when compared to HSS (0.2193). The Alabio duck from three locations (HSS, HST and HSU) have different plumage color. The dominant colors of male and famale duck were grayish brown, grayish black, grayish white, blue-green and black. The features of plumage male and female duck were brown spotted, black, blue green and plain. Male and female Alabio duck plumages have the glint of silver and shiny bluegreen. The color of bill, feet and shank of male and female duck were lite yellow, bright orange, pale yellow and black. The average five months eggs production was 67.11%±2.75 (HSS), 75.55%±3.87 (HST) and 76.48%±3.13 (HSU). The feeding duration was 14.99±0.24 minute/hour, feeding frequencies was 2.88±036 time/our and duration of drinking was 2.77±0.50 minutes/hour and moving from feeder to drinker places was 5.99 ±0.23 time/hour. The capability of male duck to mate female were 8.14±0.11bird/male (morning), 6.28±0.18 bird/male (afternoon) and 7.13 ±0.24 bird/male (evening).
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Judul: Nanokristalin Pirit (FeS2) sebagai Material Semikonduktor Fotovoltaik.
Abstrak: Teknologi fotovoltaik adalah suatu proses yang dapat mengubah sinar matahari menjadi energi listrik dengan media semikonduktor. Penggunaan sel surya untuk fotovoltaik hanya dapat mengonversi radiasi matahari menjadi energi listrik kurang dari 20%. Efisiensi akan meningkat ketika material semikonduktor untuk fotovoltaik dibuat menjadi ukuran nano. Pirit merupakan salah satu material semikonduktor fotovoltaik yang memiliki energi pita celah (Eg) dalam kisaran 0.8–0.95 eV. Energi pita celah tersebut terbukti meningkat ketika disintesis dengan metode hidrotermal menggunakan beragam molar [S]:[Fe] pada suhu 200 °C dalam 24 jam. Nilai energi pita celah yang dihasilkan adalah 1.58–2.073 eV. Ukuran nanokristalin pirit yang dihasilkan berada pada kisaran 21.04–58.77 nm menurut data Particle Size Analyzer. Besarnya ukuran nanokristal pirit yang tumbuh kurang dari 50 nm merupakan poin penting untuk aplikasi fotovoltaik.
Keyword: Hidrotermal, fotovoltaik, nanokristal, pirit