Judul: Model Prediksi Distribusi Laju Penyebaran Sulfur Dioksida (SO2)dan Debu dari Kawasan Industri (Studi Kasus di Kota Cilegon)
Abstrak: This study aims to examine the characteristics of local air; analyze the concentration of air pollution emitted from factories located in an industrial area; and predict air pollution distribution the city of Cilegon. Several sequential steps of analysis are carried out which include: (1) calculation of high-layer pollutant mixing in the atmosphere (mixing height), (2) analysis of emission of air pollutant from the source point using screen3 model; (3) analysis of distribution of air pollutant from the industrial area using general transport equation of unsteady flow. Based on climatology, Pasquill stability criterian indicate that stability profile in the region ranges from A (very unstable) to E (slightly stable). Pollutant distribution from the industry depends on the height of the chimney. The higher the chimney is, the further the distribution of the pollutant as a result of emission is expected to be. The highest concentration of SO2 is found in the emission of industry area, with atmosfheric stability class A (very unstable), whereas furthest distance occurred stability E class (slightly stable). The distribution of SO2 extends towards Tamansari village of Pulomerak District. From 24 sampling points, the highest concentration of 55,75 ìg/m3 occurred in the ASDP Merak. The levels and patterns of air pollutant distribution in the area need to be taken into account, particularly in the interest of protecting public healthlife from the impacts caused by the pollutant.
Keyword: General equation of transport, Screen3, Unsteady flow, Banten, Characteristics of local air

Judul: Simulasi penyebaran gas SO2 dari emisi cerobong menggunakan Computational Fluid Dynamics (CFD)
Abstrak: Sulfur-dioxide (SO2) is one of pollutants emitted from industrial stack emission, particularly from industries which use coal as the fuel. This pollutant dispersion needs to be studied for monitoring of air quality, one of it methods is by doing simulation using mathematical models. This research is directed to predict the distribution of SO2 concentration, dispersion pattern and critical distance where the SO2 concentration being maximum. The simulation is performed by applying CFD approach to the case of study in Suralaya power plant. A widely used CFD software called FLUENT is used to solve the equations of mass and Reynolds-Averaged Navier Stokes momentum conservations using finite volume method. Turbulence is modeled using the Spalart-Allmaras one equation while SO2 flux diffusion is computed using the species transport equation. The simulation is performed for varying atmospheric condition from very unstable to very stable one. The simulation results show that the maximal SO2 concentration at the stack is 495 mg m-3 occurs at unstable atmospheric condition, as for the maximal SO2 concentration at the altitude of 1.5 m is 5.06 mg m-3 occurs at very unstable atmospheric condition. The more stable atmospheric condition the longer the pollutant exists in the air and it falls down to the ground at a farther distance. On the contrary, the more unstable atmospheric condition, the faster the pollutant falls down as of the distance when maximal concentration on the ground is closer
Keyword: 

Judul: Anatomi otot-otot ekspresi wajah monyet ekor panjang (Macaca fascicularis)
Abstrak: Hewan primata banyak digunakan untuk penelitian biomedis karena memiliki kemiripan anatomi dengan manusia. Evolusi dari otot wajah mamalia yang berhubungan dengan ekspresi wajah dan komunikasi visual terutama pada hewan pimata dalam hal ini otot-otot daerah kelopak mata serta mulut memegang peranan penting (Bennet et al., 1995). Monyet ekor panjang (Macaca fascicularis) adalah slah satu jenis hewan primata di antara 5 hewan primata yang paling banyak digunakan untuk penelitian biomedis (Anonimus, 2000; Anonimus, 2002). Penelitian ini bertujuan untuk mempelajari morfologi otot-otot ekspresi wajah beserta origo dan insersionya untuk melengkapi data dasar anatomi otot pada M. fascicularis. Penelitian ini menggunakan tiga ekor preparat monyet ekor panjang yang telah diawetkan dalam larutan formalin 10% dan sebuah tengkorak kepala beserta tulang rahang bawah monyet ekor panjang. Pengamatan yang dilakukan meliputi morfologi otot beserta origo dan insersionya, dan hubungannya dengan variasi ekspresi wajah yang mampu dilakukan monyet ekor panjang, kemudian membandingkannya dengan literatur anatomi manusia, beberapa hewan primata lain, hewan herbivora dan karnivora. Dari hasil pengamatan, pada susunan otot ekspresi wajah monyet ekor panjang ditemukan lima kelompok otot: 1). Kelompok otot kulit kepala yaitu: m. occipitofrontalis (gabungan m. frontalis dan m. occipitalis). 2). Kelompok otot hidung yaitu: m. nasolabialis. 3). Kelompok otot mulut yaitu: m. nasolabialis, m. zygomaticus major, m. zygomaticus minor, m. levator anguli oris, m. depressor anguli oris, m depressor labii inferioris, m. mentalis, m. buccinatorius, m. orbicularis oris dan m. platysma. 4). Kelompok otot telinga yaitu: m auricularis posterior, m. auricularis superior dan m. auricularis anterior. 5). Kelompok otot kelopak mata yaitu: m. orbicularis oculi, m. corrugator supercilii dan mlevator palpebrae superioris. Setiap kelompok otot memiliki berbagai karakteristik baik morfologi maupun origo dan insersio yang berbeda dengan primata. lain, kuda, sapi dan anjing. Hal tersebut menghasilkan variasi fungsi otot yang berbeda sesuai dengan perilaku dan pola hidup.
Keyword: Macaca fascicularis, long-tailed macaque, monkey