Judul: Kinerja Produksi Ikan Sidat Anguilla bicolor bicolor Diberi Pakan Berprotein 38,5%, 42,5%, dan 46,5% pada Sistem Kolam Air Mengalir
Abstrak: Eel is a commodity that high value and favored international markets, but production still can not fill market demand. The problems most often occur in the cultivation of eels is on a slow growth, high feed conversion, and low survival rates. The problems affecting the production performance is by increasing maintenance time and cost of production. Fish feed is an important factor in cultivation. Feeding with appropriate levels of protein is expected to increase growth so as to reduce production costs and improve production performance. This study uses a completely randomized design with treatments of feed that has a different protein content, i.e. 38.5%, 42.5%, and 44.5%, respectively repeated 2 times. Fish reared in concrete ponds dimensions 2 m x 2 m x 1.8 m as many as six in a pool of water flowing at the rate of 30 L/min. Eel fish used have a weight of 65.3 ± 2.73 g/fish with a density of 10 kg/m3. Feed given 4 times a day, ie at 05.00, 11:00, 16:00 and 21:00 are at satiation method. Fish maintained for 30 days with sampling every 15 days. Parameters used include survival, growth rate, diversity coefficient weights, feed conversion and water quality. The results showed differences in the protein content of the feed did not significantly affect survival, and diversity coefficient, but the real effect on the growth rate, feed intake and feed conversion. The best treatment (P<0.05) is the feed with protein content of 46.5% resulted in a 0.63% growth rate and ratio feed conversion of 2.18.
Keyword: eel fish, ratio feed conversion, growth, protein content

Judul: Kinerja Pertumbuhan Ikan Sidat Anguilla bicolor bicolor Stadia Yellow Eel yang Diberi Pakan Pasta dengan Sumber Protein Berbeda
Abstrak: Feed is one of main factor which play role to increase growth performance of eels. Besides the high feed protein (40-50%) needed from the contain of eel’s feed, source of raw material protein is determine the eel’s feed quality. The purpose of this study is to get out the best raw material of protein source for an optimal growth performance of yellow eels with moist feed. This study was performed in eight aquariums which have measurement of 90x50x40 cm3 in 120 liters/aquarium of water. Eels at yellow eel stage in 111,25 ± 0,95 gram of body weight were used. There are four treatments in this study consisted of commercial feed, feed with baby shrimp meal as main protein source, imported fish meal, and combination from local fish meal, baby shrimp meal, and imported fish. The result showed that the feed with imported fish meal is the best treatment. Survival rate of all treatments were 100% and the feed conversion rate are 3,00; 3,01; 2,96; and 3,24. There’s no significant difference in daily growth of all treatments where the value are 0,68 ± 0,18%; 0,46 ± 0,06%; 0,58 ± 0,10%, and 0,31 ± 0,07%. Protein and lipid retention rate of the best treatment are 22,30% and 603,82% respectively.
Keyword: protein source, moist feed, growth performance, Eels

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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