Judul: Kajian Patogenesis Infeksi Buatan Bakteri Edwardsiella Ictaluri Pada Ikan Lele (Clarias Sp.)
Abstrak: Edwardsiella ictaluri merupakan penyebab penyakit Enteric Septicemia of Catfish (ESC) termasuk hama dan penyakit ikan karantina (HPIK) golongan II yang memerlukan kewaspadaan tinggi untuk dicegah masuk dan tersebarnya penyakit ini di wilayah Republik Indonesia. Bakteri ini menimbulkan hole in the head disease. Ikan lele (Clarias sp.) merupakan salah satu komoditas air tawar yang penting, dalam rangka pemenuhan peningkatan gizi masyarakat Indonesia. Masalah yang sering dihadapi pada budidaya ikan lele adalah serangan penyakit yang disebabkan oleh parasit dan bakteri. Ikan lele merupakan salah satu inang target infeksi E. ictaluri. Upaya pencegahan penyebaran penyakit ini dapat dilakukan dengan tindakan karantina melalui tindakan pemeriksaan penyakit ikan terhadap ikan lele yang dilalulintaskan. Sampai saat ini, perubahan patologi ikan lele yang terinfeksi E. ictaluri isolat lokal secara detail belum diketahui,
Keyword: Infeksi Buatan, Edwardsiella Ictaluri, Ikan Lele, Clarias Sp., Enteric Septicemia of Catfish, hama dan penyakit ikan karantina

Judul: Upaya Pengendalian Infeksi Bakteri Edwardsiella tarda pada Ikan Lele (Clarias sp.) Menggunakan Ekstrak Kunyit (Curcuma longa)
Abstrak: Production target of catfish in Indonesia was up to 35% for 2013 and can be reached by free bacteria infection production including from Edwardsiella tarda. Turmeric (Curcuma longa) has been tested as antibacteria, and so its effectivity to catfish must be tested. The objectives of this research was to test turmeric extract on feed as additive to E. tarda infection on catfish. This research were test some methods to extract turmeric and in vivo test with prevention, curative, and control treatment, also positive and negative control three times for each test then analized with RAL method. The best result was the extraction by decoction for 15 minutes with 7,42 mm of inhibition zone. The bacteria density result of Lethal Dosage 50 (LD50) on catfish was 106 cfu/mL. This bacteria had some clinical signs like swelling, hemoraghic, and body ulcer, also gastroentritis and gas captivy. The best result of the survival rate in vivo test was the curative treatment with 86,67%. Specific Growth Rate, Growth Rate, and Growth of Absolute Length parameters did not differ significantly for each treatments.
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Judul: Kajian Atmosfer Bawah Wilayah Tropis dan Subtropis
Abstrak: Planetary Boundary Layer is the lowest part of the atmosphere directly affected by the earth’s surface and responds to surface forcings within a time period of hourly to daily. The thickness of boundary layer varies over space and time, ranging from hundreds of meters to a few kilometers. The objective of this study consist of the analysis of Boundary Layer based on diurnal and nocturnal vertical profiles of meteorological properties and identification of characteristics pertaining to tropical atmosphere (represented by Soekarno-Hatta (6.110S, 106.650E), Polonia (3.560N, 98.680E), and Da Nang (16.030N, 108.200E) stations) and subtropical atmosphere (represented by Perth (31.930S, 115.960E), Nanjing (32.000N, 118.800E), and Hakasskaja (43.780N, 87.620E) stations). Virtual potential temperature, specific humidity, wind speed and direction, atmospheric stability, and Bulk-Richardson number are used to estimate the boundary layer thickness. Vertical profile of the virtual potential temperature and specific humidity are used to determine the Mixed Layer heights during the day and Residual Layer heights during the night. On the other hand, the mean value of Turbulent Flow Thickness is derived from the vertical profile of the Bulk-Richardson number (RiB). Analytical results of this study revealed that Mixed Layer height in the tropical atmosphere varies in a range from 260 m to 1410 m, Residual Layer height varies in a range from 267 m to 925 m, whereas the Turbulent Flow Thickness variation is confined between 0 m to 335 m. In subtropical atmosphere Mixed Layer height varies in a range from 101 m to 1483 m, Residual Layer height varies in a range from 121 m to 1276 m, whereas the Turbulent Flow Thickness variation is confined between 0 m to 769 m. This study also revealed that, except during summer, Mixed Layer Heights in the tropics are normally higher than in the subtropics.
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