Judul: Inventarisasi Parasit pada Benih Ikan Gurame dalam Kolam Terpal di Kecamatan Pengasih Kabupaten Kulon Progo Yogyakarta.
Abstrak: The objective of this research was to record the parasites (ectoparasite and endoparasite) in giant gourami which cultured in plastic lined pond system. Thirty fingerlings for each size ranges of 3-4 cm, 5-6 cm, and 10-11 cm were collected from plastic lined ponds in three different villages, Desa Mergosari, Desa Kemiri, and Desa Karang Tengah, Kecamatan Pengasih, Kabupaten Kulon Progo, Yogyakarta. The examination showed that there were 5 genera of ectoparasites found in gouramy fingerlings, namely Trichodina, Chilodonella, Dactylogyrus, Gyrodactylus, and Ichthyophthirius. The highest prevalent and parasite intensity were found in Trichodina in 5 – 6 cm sized fish which were 100% and 28 ind/fish, respectively. There was no endoparasite found in giant gouramy fingerlings during the examination period.
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Judul: Inventarisasi Ektoparasit Pada Benih Ikan Gurame (Osphronemus Goramy Lac.) Di Stasiun Penelitian Perikanan Darat Depok, Bogor
Abstrak: Penelitian mengenai ektoparasit yang menginfestasi benih ikan gurame, yang dilakukan dari tanggal 27 Nopember sampai dengan tanggal 9 Desember 1979, bertujuan untuk mengetahui jenis-jenis dan habitat parasit serta untuk mengetahui distribusi dan frekwensi kejadian parasit pada berbagai ukuran benih ikan gurame. Benih ikan gurame yang diperiksa berasal dari kolam pemeliharaan benih (kolam pendederan) di lokasi perkolaman Stasiun Penelitian Perikanan Darat Depok, Bogor. Jumlah benih ikan yang diperiksa 90 ekor dan terdiri dari tiga kelas ukuran panjang yaitu: nyungeung (2,2 - 3,4 om), dua jari (3,55,4 cm) dan tiga jari (5,8 8,9 cm).
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Judul: Utilization of terra/MODIS L1B data for analysis of horizontal wind profile in the troposphere
Abstrak: This study was concerned with horizontal wind derived from data collected with the Moderate-resolution Imaging Spectroradiometer (MODIS) on board the NASA’s Earth Observation System (EOS)-Terra satellite. The aim of this study is to develop a method for the estimation of horizontal wind movement in the troposphere based on Navier-Stokes equation. The method was applied to a calibrated and geolocated Terra/MODIS L1B 1 km data set. The data inputs to estimate surface temperature are retrieved from TIR (Thermal Infrared) bands 31 (10.780 μm to 11.280 μm) and 32 (11.770 μm to 12.270 μm). The obtained surface temperatures were later used to approximate geopotential height on a constant-pressure surface by using the modified Poisson equation. The main assumptions used are the hydrostatic equilibrium, ideal gas law, constant lapse rate and constant acceleration of gravity. Based on the distribution of geopotential height, the pressure gradient force is measured by the gradient of geopotential on an isobaric coordinate to present the horizontal wind profile. For certain topographic areas especially in the mountain ranges, there was a disadvantage of using pressure as a vertical coordinate which lead to inaccuracy. In spite of that, Terra/MODIS L1B data with 1 km spatial resolution can be used to estimate the horizontal wind movement in the troposphere.
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