Judul: The efficiency of carbohydrate utilization through supplementation of yeast-chromium in the diets of giant gouramy (Osphronemus gouramy, Lac.)
Abstrak: Penelitian ini dilakukan guna mengkaji pengaruh suplementasi kromium ragi dalam pakan terhadap efisiensi pemanfaatan karbohidrat pakan untuk meningkatkan deposisi protein tubuh dan pertumbuhan ikan ggurami. Penelitian ini menggunakan empat macam pakan masing-masing dengan kadar 0, 1.5, 3.2, dan 4.9 ppm Cr(+3). Keempat tingkat kromium tersebut dicobakan pada dua jenis pakan, baik dengan kadar karbohidrat rendah (mengandung bahan ekstrak tanpa nitrogen, BETN, 30%) maupun tinggi (mengandung BETN 40%). Protein dan total energy semua pakan adalah sama., This research was conducted to investigate the effect of yeast-chromium supplementation in the diets on the efficiency of dietary carbohydrate utilization to increase body protein deposition and growth in giant gouramy. The experiment used diets containing 0, 1.5, 3.2, and 4.9 ppm Cr(+3), respectively. The four levels of dietary chromium were applied both to diets with low (containing nitrogen free extract, NFE, 30%) and high (containing NFE 40%) level dietary carbohydrate. The protein and total energy content of all diets were equal.
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Judul: Pengaruh Pemberian Kadar Kromium yang Berbeda dalam Pakan Terhadap Kinerja Pertumbuhan Ikan Baung ( Hemibagrus nemurus Blkr)
Abstrak: This experiment was conducted to determine the effect of dietary chromium on the growth performance of baung fish (Hemibagrus nemurus Blkr). Thisa experiment used four diets containing different level of chromium yeast (0.0,1.47,3.20, and 4.59 ppm kg-1). Twenty fish with the initial body weight 7.0 ± 0.2 g were placed in each aquarium (50x40x35 cm). Fish fed on the experimental diets three times daily at station for 60 days. Results of this experiment showed that chromium diets produced body protein level, ratio RNA/DNA and protein retention higher than that of non chromium diet. However, diet contained 3.20 ppm chromium yeast produced the highest protein deposition, and produced the highest daily growth rate and feed efficiency. The liver and carcass glikogen level increased as the chromium level of diet was elevated, on the other side, body lipid level decreased as the chromium level of diet was elevated
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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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