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: 

Judul: Penurunan nilai albedo dan suhu permukaan dari data Terra MODIS L1B untuk klasifikasi awan
Abstrak: Clouds affect the energy balance in atmosphere through absorbtion, reflection and solar radiation process. These processes affect albedo values and the cloud surface temperature. The differences between albedo values and surface temperature can be the indicator in cloud classification and can be the separation between the cloud covered area and non-cloud covered area. Terra MODIS L1B data can be used for classifying between cloud and non-cloud using reflectant information at wavelength 0.62 μm to 0.67 μm, 0.459 μm to 0.479 μm, and 0.545 μm to 0.565 μm and the extraction of surface temperature using wavelenght 10.780 μm to 11.280 μm dan 11.770 μm to 12.270 μm. Yet, before the classification process, it is needed to look at the response of each wave lenght to the same object at the same location. Cloud‟s surface temperature can be derived from canal 31 and canal 32. The error values of both canal are 1.7 K on Januari 1st 2008, 3.3 K on March 26st 2008, 1.7 K on November 2st 2008, 5.6 K on April 6st 2008, and 12.8 K on September 24st 2008. Albedo value can be derived from band 1, band 3, band 4 since the values distribution pattern of all these canal are relatively in common. The results of the relation between reflectance bands and thermal bands show that the albedo approach method and surface temperature approach method can be used for clouds classification. The classification using albedo approach method is the based on the thickness of the clouds, while the surface temperature approach method is based on the height of clouds.
Keyword: 

Judul: Prevalensi Kecacingan Ancylostoma spp pada Anjing (Studi Kasus di Rumah Sakit Hewan Jakarta Periode Januari-Desember Tahun 2000).
Abstrak: Anjing seperti halnya juga hewan-hewan lain sangat mungkin terserang penyakit, salah satunya oleh infeksi cacing. Salah satu cacing yang banyak menginfeksi pasien-pasien anjing di Rumah Sakit Hewan Jakarta adalah cacing Ancylosroma spp. Jumlah pasien anjing yang terinfeksi cacing Ancylostomn spp selama Tahun 2000 sebanyak 491 ekor.
Keyword: