Judul: Identifikasi Protozoa Parasitik Pada Ikan Patin (Pangasius Hypophthalmus) Dan Ikan Mas (Cyprinus Carpio) Dari Bursa Ikan Hias Laladon, Bogor
Abstrak: Protozoa parasitik pada ikan patin (Pangasius hypophthalmus) dan ikan mas (Cyprinus carpio) adalah Trichodina sp., Ichthyophthirius sp. dan Myxobolus sp. Protozoa ini berpotensi menimbulkan kerugian ekonomi dan kematian pada ikan. Penelitian ini dilakukan untuk mengetahui keberadaan protozoa parasitik pada kulit, insang dan usus ikan patin dan ikan mas. Sampel diambil dari Bursa Ikan Hias Laladon, Bogor masing-masing sebanyak 30 ekor. Pemeriksaan kulit, insang dan usus dilakukan dengan metode pemeriksaan natif dan pewarnaan Lugol. Protozoa parasitik diidentifikasi berdasarkan morfologi (ukuran dan bentuk). Jenis protozoa parasitik yang ditemukan pada kulit, insang dan usus adalah Trichodina sp., Ichthyophthirius sp. dan Myxobolus sp. Trichodina sp. ditemukan di organ kulit sebanyak 29 sampel (96.7%) dari ikan patin dan 30 sampel (100%) dari ikan mas. Ichthyophthirius sp. ditemukan di organ insang sebanyak 2 sampel (6.7%) pada ikan patin dan 1 sampel (3.3%) dari ikan mas positif. Myxobolus sp. ditemukan pada organ usus sebanyak 11 sampel (36.7%) dari ikan patin dan 2 sampel (6.7%) dari ikan mas. Trichodina sp. yang ditemukan berdasarkan morfologi adalah Trichodina giurusi.
Keyword: Cyprinus carpio, Pangasius hypophthalmus, protozoa parasitik

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: 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: