Judul: Estimasi Sebaran Konsentrasi Maksimum SO2 dan Partikulat di Kota Cilegon menggunakan Model WRF-Chem
Abstrak: Kota Cilegon merupakan kota dengan kawasan industri yang berkontribusi terhadap peningkatan pencemar udara seperti SO2 dan partikulat (PM10) yang dapat mempengaruhi kesehatan masyarakat sekitar. Pemantauan kualitas udara menjadi salah satu langkah untuk pengendalian pencemaran udara dan dampaknya, namun alat pemantau kualitas udara di Kota Cilegon masih terbatas. Model WRF-Chem (Weather Research and Forecasting-Chemistry) dapat digunakan untuk mengidentifikasi wilayah yang berpotensi terpapar sebaran pencemar dengan konsentrasi maksimum. Penelitian ini bertujuan untuk mengetahui pola dispersi dan mengestimasi sebaran konsetrasi maksimum SO2 dan PM10 di Kota Cilegon berdasarkan luaran model. Berdasarkan analisis pola dispersi konsentrasi pencemar luaran model WRF-Chem menunjukkan bahwa sebaran konsentrasi maksimum SO2 didominasi berada di bagian Timur dan Selatan Kota Cilegon. Sementara itu sebaran konsetrasi maksimum PM10 didominasi berada di bagian Utara Kota Cilegon. Secara keseluruhan hasil model menunjukkan bahwa wilayah Kecamatan Jombang dan Cibeber merupakan wilayah yang paling berpotensi terpapar konsentrasi maksimum SO2 dengan frekuensi cukup tinggi (220-224 jam pada September dan 163-190 jam pada Januari selama periode running 336 jam) dan nilai konsentrasi maksimum mencapai 0.075 μg/m3 pada September dan 0.033 μg/m3 pada Januari. Sedangkan Kecamatan Pulomerak merupakan wilayah yang paling berpotensi terpapar konsentrasi maksimum PM10 dengan frekuensi cukup tinggi dibandingkan dengan wilayah lain (13 jam untuk September dan sebanyak 8 jam untuk Januari dengan nilai konsentrasi maksimum mencapai 0.27 μg/m3 pada September dan 1.2 μg/m3 pada Januari. Nilai konsentrasi hasil model masih underestimate, namun nilai korelasi untuk parameter meteorologi cukup tinggi (R=0.89) untuk suhu udara sehingga berdasarkan faktor meteorologinya model WRF-Chem dapat digunakan untuk mensimulasikan sebaran konsentrasi pencemar.
Keyword: Cilegon, konsentrasi maksimum, polusi udara, WRF-Chem

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: Posisi Filogenetik Kura-Kura Carettochelys Insculpta  (Reptillia: Testudinata)
Abstrak: Carettochelys insculpta is an endemic freshwater turtle of southern Papua and northern Australia. Phylogenetic position of this turtle is remain unresolved until now. Most of the research conducted show close relationships of C. insculpta and members of Trionychidae family. However, some of the research show distance between C. insculpta and members of Trionychidae family. This research is conducted to analyze phylogenetic relationship between C. insculpta and other members of Testudinata using 12S rRNA, 16S rRNA, and both gene as markers. DNA samples were obtained from three different organisms of C. insculpta. Two species used as outgroups were Alligator mississippiensis and Iguana iguana. Phylogenetic analysis was carried out using Neighbor-Joining method with Felsenstein 1981 (F81) modeltest. A polytomy tree of Testudinata was produced by using 12S rRNA gene. However, analysis using 16S rRNA and both genes as markers confirmed that C. insculpta was located between the Chelonidae and the Trionychidae family.
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