Judul: Rekayasa rematurasi ikan patin siam Pangasianodon hypophthalmus dengan kombinasi penyuntikan hormon PMSG dan HCG serta penambahan vitamin mix 100 mg/kg pakan
Abstrak: The experiment was aimed to increase the rematuration injection of process rate on striped catfish Pangasianodon hypophthalmus through Pregnant Mare Serum Gonadotropin (PMSG) dan Human Chorionic Gonadotropin (HCG) hormone combined with vitamin mix addition to the feed. The experiment was designed with four treatment : (A) Control; (B) PMSG 5 IU and HCG 2,5 IU per kg of fish; (C) PMSG 10 IU and HCG 5 IU per kg of fish; (D) PMSG 20 IU and HCG 10 IU per kg of fish. The fish was fed with commercial pellet which added with 100 mg/kg addition vitamin mix. The result showed that all the fish treatment with hormone mix and vitamin mix have a significant gonadal development, and mature, except control. The fish also have significant on Specific Growth Rate (SGR) and Growth Rate (GR). The dose PMSG 20 IU and HCG 10 IU showed of the optimal treatment for gonadal rematuration for striped catfish.
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Judul: Rekayasa rematurasi ikan patin siam Pangasianodon hypophthalmus dengan penyuntikan hormon PMSG dan HCG serta penambahan vitamin mix 300 mg/kg pada pakan
Abstrak: The research was carried out from April to June, 2010 at Babakan Field LaboratoryPonds, Darmaga. The research aimed to increase the rematuration process rate on striped catfish Pangasianodon hypophthalmusthrough a combination of Pregnant Mare Serum Gonadotropin(PMSG)and Human Chorionic Gonadotropin (HCG) hormone injection with 5 and 2,5 IU; 10 and 5 IU;also 20 and 10 IU/kgof spawner body weight dosage combinedwith vitamin mixaddition to fish feed. Sixteen femalestriped catfish spawner were used, consisting of twelve PMSG-treatedspawner and 4 control spawner.This researchused one way single ANOVA with 4treatments and 3 replications. Statistic analysis of observed variables showed unsignificant differences among the three treatments in rematuration parameters. It was resulted that rematuration rate was increased in treatedspawners indicated by a 100% pregnancy. Spawners treated with 10 IU PMSG and 5 IU HCG/kg of spawner body weight along with 20 IU PMSG and 10 IU HCG/kg of spawner body weight dosage was able to reach maturity and spawned with the larval survival rate on the fourth day at 98,63% and 84,81% respectively, thus making 10 IU PMSG and 5 IU HCG/kg of spawner body weight as the best dosage.
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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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