Judul: Potensi penggunaan acepromaxine sebagai alternatif anestetikum pada ikan patin [Pangeasius pangasius]
Abstrak: Penelitian ini bertujuan untuk mengetahui potensi penggunaan acepromazine (ACP) sebagai alternatif anestetikum pada ikan patin (Pangasius pangasius). Penelitian ini menggunakan ACP sebagai anestetikum yang diberikan pada ikan patin dengan metode perendaman (dipping). Hewan coba yang digunakan adalah ikan patin sebanyak 650 ekor yang berumur 4 bulan, memiliki panjang sekitar 5 cm dan bobot sekitar 6 gram. Ikan patin dibagi menjadi 6 kelompok perlakuan yaitu PO (tidak direndam ACP, sebagai kontrol), PI (direndam ACP sebesar 10 ppm), P2 (direndam ACP sebesar 20 ppm), P3 (direndam ACP sebesar 30 ppm), P4 (direndam ACP sebesar 40 ppm), dan P5 (direndam ACP sebesar 50 ppm). Ikan patin ditempatkan pada gelas plastik yang berisi air sebanyak 100 ml, kemudian air diberi ACP sesuai perlakuan. Selanjutnya ikan-ikan percobaan diamati gejala anestesi yang timbul untuk menentukan onset ACP. Selain itu, juga diamati kematian ikan untuk mengetahui gambaran kasar keamanan penggunaan ACP. Sesaat setelah ikan teranestesi, sesegera mungkin ikan tersebut dipindahkan ke dalam gelas plastik yang berisi air tanpa ACP. Hal ini dilakukan untuk mengetahui durasi ACP. Hasil penelitian menunjukkan bahwa kelompok P2 (dosis 20 ppm) adalah dosis efektif sebagai anestetikum pada ikan patin, Perlakuan 2 memiliki onset cepat yaitu 33.68 menit dan memiliki durasi lama 71.42 menit dan kematian 16%. Penelitian ini lebih mementingkan lama durasi karena tujuannya untuk transportasi ikan. Gejala anestesi terlihat jelas yaitu keseimbangan yang berkurang, tonus otot menurun, beberapa refleks hilang, dan rasa nyeri berkurang….
Keyword: Acepromazine, Catfish, Onset anasthesia, Duration anasthesia

Judul: Potensi Penggunaan Ketamin sebagai Alternatif Anastetikum pada Transportasi Ikan Patin
Abstrak: The main objective of this study is determining the ketamine potent use as alternative anaestheticum on transportation of catfish. Catfishes were anaesthetized in this study was done by dipping. This study used design randomized complete consist of 6 groups treatment such as P0 negative control without dipping, while P1, P2, P3, P4, and P5 were dipped groups with a dose of ketamine respectively 10 ppm, 20 ppm, 30 ppm, 40 ppm, and 50 ppm. Every treatment was repeated 5 times. The result of this study showed that the fastest onset was P4 group, 26 minutes and the longest duration was P2, 139.12 minutes. The lowest level death was caused ketamine namely P2 groups, 0%. But, the onset of 5 groups treatment wasn’t real diffrence, so could be cloncluded that dose didn’t too influence onset and effective dose for transportation was 20 ppm
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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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