Judul: Histology Analysis of Diseased Intestines, Kidneys, and Liver Catfish from Parung, Bogor
Abstrak: Penyakit pada ikan lele budidaya dapat disebabkan oleh faktor non-infeksius maupun faktor infeksius. Kerusakan jaringan seperti usus, ginjal, dan hati dapat menjadi indikator dalam menganalisis penyebab terjadinya kematian ikan. Penelitian ini bertujuan menganalisis histologi usus, ginjal, dan hati penyebab lele budidaya yang sakit dan kematian massal yang berasal dari Parung, Bogor. Lele sehat sebanyak satu ekor dan sakit sebanyak lima ekor yang berasal dari kolam yang sama diambil organ usus, ginjal, dan hati untuk dibuat preparat histologi, dilakukan skoring dan dilanjutkan analisis deskriptif dari gambaran histologi. Gejala klinis dan kerusakan organ yang dialami ikan sakit diduga terinfeksi bakteri patogen yang ditandai dengan adanya nekrosis dan pelebaran muskularis longitudinal usus. Pelebaran muskularis longitudinal tertinggi pada ikan 1 sebesar 82 μm dan nekrosis tertinggi pada organ usus ikan 3 sebesar 2,72 (kerusakan sedang), organ ginjal ikan 5 sebesar 1,76 (kerusakan ringan) dan organ hati ikan 1 sebesar 2,15 (kerusakan sedang). Gejala klinis yang diterjadi diduga berhubungan dengan penyakit kuning., Diseases in cultured catfish can be caused by non-infectious and infectious factors. Tissue damage such as intestines, kidneys, and liver can be an indicator in analyzing the caused of fish died. This study aims to analyze the histology of the intestines, kidneys, and liver causes that cause desease andf and mass mortality from Parung, Bogor. One healthy catfish and five sick catfish from the same pond were taken the intestinal organs, kidneys, and livers to make histological, scoring and descriptive analysis of the histological picture. Clinical symptoms and organ damage by fish suspected of being infected with pathogenic bacteria are characterized by intestine longitudinal muscularis dilation and necrosis. The highest longitudinal muscularis dilation in fish 1 was 82 μm and the highest necrosis in the intestinal organs of fish 3 of 2,72 (moderate damage), kidney organ of fish 5 of 1,76 (mild damage) and liver of fish 1 of 2,15 (moderate damage). Clinical symptoms that occur were suspected to be associated with jaundice.
Keyword: bacteria, catfish, histology, necrosis

Judul: Studi Histopatologi Kasus Kematian Masal Ikan Lele Dumbo (Clarias gariepinus) di Blitar
Abstrak: Dumbo catfish (Clarias gariepinus) is a species of catfish farming in Indonesia originating from Africa. However, dumbo catfish farming is still have many problem including the mass mortality. Histopathology is one of method to diagnostic fish disease. This report aims to study the histopathological lesion from dumbo catfish mass mortality case at Blitar. The results of this study are expected to provide information about the cause of the mass death in order to prevent the future death in the catfish farming. Histopathology slide of dumbo catfish organs were prepared with hematoxylin eosin (HE), periodic acid Schiff (PAS), Toluidine Blue and Giemsa staining then examined under a light microscope. The lesions were described and the pathogenesis was prepared based on the literature study. There were branchitis, perivascular hepatitis, lymphoid depletion of spleen, enteritis with severe enteromyxosis, cardiomyositis, kidney tubular degeneration, skin and muscular degeneration. The intestine was presumed to have the worst lesion due to myxozoan parasite infection of Enteromyxum spp. The intestinal epithelium showed numerous and various protozoan developmental stages resulting growth disturbances. High fish density accompanied by the discharge of enteritis intestinal content made the decreasing of water quality. In this case, very low dissolved oxygen and high ammonia concentration in the water lead to hypoxia and fish death.
Keyword: Fish mass mortality, Fish histopathology, Fish disease, Enteromyxum spp

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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