Judul: Oceanographic Dynamics  and Simulation of Sea Surface Circulation in the Makassar Strait
Abstrak: Selat Makassar merupakan bagian penting dari perairan global yang menghubungkan Samudera Pasifik dan Samudera Hindia dalam sirkulasi termohalin global dan juga dipengaruhi oleh banyak variabilitas yang ada di Perairan Indonesia. Tujuan dari penelitian ini adalah untuk mendeskripsikan kondisi oseanografi serta pola sirkulasi di Selat Makassar dan analisis trajektori massa air dari pantai Balikpapan. Dalam penelitian digunakan dari model CROCO resolusi 1/36º dengan rentang data 2015-2018 dan model Ichtyop dalam analisis trajektori. Data model digunakan untuk melihat variabilitas suhu, salinitas, arus, dan volume transpor. Hasil dari penelitian menunjukkan dinamika parameter oseanografi berfluktuasi secara musiman hingga kedalaman 60-70 m. Pada musim barat kondisi arus permukaan menuju ke utara. Pada musim timur arus berbalik menuju selatan. Volume transpor dominan terjadi di kedalaman termoklin yang mencapai maksimal ketika musim timur. Analisis trajektori pada permukaan terlihat partikel menyebar mengikuti pola arus musiman yang menuju Laut Sulawesi saat musim barat dan menuju Laut Jawa saat musim timur., Makassar Strait has main role in global circulation connecting Pacific Ocean and Indian Ocean as global thermohaline circulation system. Moreover Makassar Strait also influenced by many variability of Indonesian Seas. The aim of the study is to describe the oceanographic condition and circulation system of Makassar Strait, and analyze the water mass trajectory from Balikpapan coast. This study used CROCO models dataset with 1/36º resolution from 2015-2018 timeseries and Ichtyop model for trajectory analysis. The model dataset is used to observe the dynamic of oceanographic parameters such as temperature, salinity, ocean current, and transport volume. Result of the study revealed the dynamics of oceanographic parameters is fluctuate seasonally up to 60-70 m depth. During Northwest Monsoon (NWM) surface ocean current flows northward. During the Southeast Monsoon (SEM) the surface current flows opposite to the southward, The transport volume is dominated in termocline depth which maximum during SEM. The trajectory analysis at ocean surface revealed the particles spread following the seasonal change. During NWM is dominant flows to the Sulawesi Sea and during SEM flows to the Java Sea.
Keyword: Analisis Trajektori, Model CROCO, Selat Makassar

Judul: Potensi dan Pemanfaatan Citra Satelit Memantau Dinamika Massa Air Permukaan di Selat Makassar
Abstrak: One of the most interesting to study on the Indonesian waters is the existence of global term namely Indonesian Through Flow (ITF) at Makassar Strait. ITF is water mass flow from the Pacific Ocean through the Indonesian Waters into the Indian Ocean. The water mass flow could be detected from variations of oceanographic parameters such as temperature and chlorophyll. In the current technological developments, oceanographic parameters can be detected using remote sensing technology. This study aims to monitor the dynamics of the surface water masses in the Makassar Strait using the potential and utilization of satellite images. In this research, image processing and data analysis of Terra and Aqua satellites that carry the sensor Moderate Resolution Imaging Spectroradiometer (MODIS) spatial resolution of 1 km and 4 km were processed in the form of daily, 8-day and monthly in 2009 and 2010. Satellite image processing to generate Sea Surface Temperature (SST) data use algorithms theoretical basis document 25 [11] and the chlorophyll-a concentration use OC3M algorithm. Wind speed and direction data is used as supporting data. Based on observations of daily data for 2 years there are 2 to 3 daily data which can be processed to produce data SST and chlorophyll-a concentrations. The lack of data is due to the thick coverage of cloud throughout the year in the waters of Makassar Strait. The flow of water masses in the Makassar Strait more easily observed from the SST data compared with chlorophyll-a concentration data. Daily SST data clearly ilustrates the surface water mass flow from north to south of the Makassar Strait on the West Monsoon which detected in March 2010 and from south to north on the East Monsoon which is reflected from the SST data in June 2010. Surface water mass movement is also evident from the data of 8-day and monthly, especially on the West Monsoon. The pattern of water mass movement are consistent with the pattern of wind direction.
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Judul: Pengujian Virus Newcastle Disease Gen VII Isolat Lapang Sebagai Virus Standar Pada Uji Tantang Vaksin
Abstrak: This study was conducted to determine the standard of Newcastle disease virus Gene VII field isolate as a virus challenge to vaccine test. A virus suspension that has previously been tested by HA test then titrated with EID50 using 30 Specific Pathogen Free (SPF) of 10 day old chicken embryonated eggs. In addition, chicken lethal dose50 (CLD50) test were used to determine the virus titer that could cause 50% death of the chicken population. The CLD50 test was used 25 day-old-chickens (DOC) divided into 5 groups. The virus was diluted from 10-1 to 10-8. The 104 to 10-8 dilution of NDV was infected to every group of chicken via eyedrop and intranasal with 0.1 ml/chicken dosage. Haemagglutination test showed that the allantoic fluid were contain high titers of NDV is 512 HAU. The infective NDV that had been titrated by EID50 test showed the virus titers is 109 EID50/0.1 ml or 1010 EID50/ml and the virus titers of CLD50 test e.i 106.48 CLD50/0.1 ml or 107.48 CLD50/ml. These results can be concluded that the NDV Gene VII field isolates were most appropriate to be used as a standard virus to vaccine test
Keyword: Newcastle Disease Virus Gene VII, HA tes, EID50 test, CLD50 test