Judul: Bakteri dan cacing parasitik pada insang dan saluran pencernaan ikan patin (Pangasius sp.)
Abstrak: The present study was conducted to isolte, culture and identificatify of bacteria and parasitic worm from gills and digestive tract of catfish. A group of 10 of catfish were used, each gills and digestive tract was collected. The parasitic worms were colored with Semichon’s Acetocarmine for permanent staining. Differentiations and characterizations of variants isolate were based on biochemical reactions and Gram staining technique. Parasitic worms that can be identified from gills were Dactylogyrus sp. and Pseudodactylogyrus sp. The laboratory result shows that the gills and digestive tract of catfish were predominantly contaminated with Aeromonas sp. and Staphylococcus epidermidis, followed by Streptococcus sp., Edwardsiella tarda, Escherichia coli, Basillus sp. dan Vibrio cholerae.
Keyword: 

Judul: Identifikasi Bakteri dan Cacing Parasitik pada Insang dan Saluran Pencernaan Ikan Nila Hitam (Oreochromis niloticus)
Abstrak: The objectives of this research were to identify parasitic worms and bacteria in gills and digestive tract of nile tilapia (Oreochromis niloticus). A group of 10 fishes of nile tilapia were used, each gills and digestive tract was collected. The parasitic worms were colored with KOH and clove oil for semi-permanent staining, and Semichon’s Acetocarmine for permanent staining. The isolated bacteria were identified using Gram staining, Triple Sugar Iron Agar, citrate agar, urea agar, indole, and cabohydrate fermentations. The result showed that there were three kind of parasitic worms in gills of nile tilapia, Dactylogyridae, Dactylogyrus sp., and Pseudodactylogyrus sp. The total amount of Dactylogyridae is 8 worms, Dactylogyrus sp. is 72 worms, and Pseudodactylogyrus is 24 worms. The bacteria were identified and the result showed that Aeromonas sp., Bacillus sp., Escherichia coli, Edwardsiella tarda, Klbesiella pneumoniae, Pasteurella sp., Staphylococcus epidermidis, and Vibrio parahaemolyticus were come from gills. Aeromonas sp., Bacillus sp., Escherichia coli, Enterobacter aerogenes, Klebsiella pneumoniae, Staphylococcus aerus, Staphylococcus epidermidis, Streptococcus sp., and Vibrio parahaemolyticus were come from digestive tract. The relation between the parasitic worms and the bacteria did not significanty obvious. The parasitic worms might predispose the secondary infection caused by bacteria or might be the opposite.
Keyword: 

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.
Keyword: