Judul: Penggunaan Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) untuk Simulasi Sebaran Polutan NO2 dan SO2
Abstrak: HYSPLIT is a model primarily designed to predict the trajectory, dispersion, and concentration of pollutants from a single or multiple sources. The model may be integrated with meteorological data fields derived from the WRF model to identify source location. Industrial area normally release various types of gas pollutants with variable concentrations, including NO2 and SO2. The abundance of the emitted pollutants will increase along with increasing industrial activities. As part of air quality management, activities to monitor air quality needs to be conducted regularly in order to control the pollutants concentrations. Utilizing a model simulation may allow us to identify the pollutants exposure potentials. The objective of this study include to understand how HYSPLIT can be used to predict and analyze trajectory of pollutants, estimate pollutants concentrations, and analyze the relationship between temperature and atmospheric stability to NO2 and SO2 concentrations. The result showes that in June trajectory is directed westward and in December trajectory it moves eastward. In addition, NO2 concentrations obtained for PT. X ranged from 350.5 to 368 and SO2 ranged from 338 to 677 . The NO2 concentrations for PT. Y ranged from 385.7 - 410.2 and SO2 ranged from 442.2 - 401.1 Temperature and atmospheric stability conditions affect the concentration of pollutants significantly. Correlation between temperature and concentration of NO2 and SO2 ranged from -0.54 to -0.69 and the correlation between atmospheric stability and the concentration of NO2 and SO2 is -0.51 to -0.78.
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Judul: Simulasi Dispersi Polutan Dari Kawasan Industri Menggunakan Tapm (The Air Pollution Model)
Abstrak: Nowadays air polution has showing a very bad condition. An independent research which is conducted in Sydney city, Australia showing the SO2 emision level in atmosphere greatly increased in 40 years. One of the air pollution source is industry. Industrial activities are emiting the polutant which also determine the air quality in it’s surrounding, such presence need an intensive watch. However it is halted by high cost, so the expedient to predict the pollutant distribution is a must. One of those expedient is using a software based modeling called TAPM. The purpose of this research are to analyze the direction of pollutant distribution from 2 industrial source and to analyze the influence of meteorological factor against polutant level. In march most of the polutant is dispersed to east and south, in June and September the polutant is dispersed almost in one direction. The dispersion pattern in December is different than other month, the polutant is dispersed to all direction. At noon polutant level is higher than night because meteorological factor on noon such as low humidity, high solar radiation and air temperature are supporting the raise of polutant level. At night the oposite condition is occur which cause polutant level to drop. Rainfall rate also affecting the polutant level, whenever rain is occurred then the polutant level will drop and vice versa. Maximum polutant level in PT YMMI is higher than PLTU Suralaya. Maximum polutant level in PT YMMI are 42.780 ppm which is located at source point while PLTU Suralaya are only 752 ppm located as far as 12,1 kilometres from source point.
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Judul: Embriogenesis ikan buta (Astyanax fasciatus)
Abstrak: Ikan buta Astyanax fasciatus adalah spesies ikan unik dari famili Characidae yang menempati perairan dalam gua di Wilayah La Cueva Chica-San Luis Potasi-Mexico. Ikan ini memiliki mata yang tereduksi (Blind Cavefish) dan warna kulit merah muda, pucat serta mengkilap.
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