Judul: Inventarisasi dan Identifikasi Tungau Ektoparasit pada Cicak di Kawasan Taman Margasatwa Ragunan
Abstrak: Gecko interacts with various types of mites, both ectoparasite and endoparasite. Ectoparasite mites are parasitic organisms that live on the surface of its host, sucking the blood or feed on hair, fur, skin, or skin secretions. Many species of gecko were infested by Geckobia. The aim of this research was to inventory, identify, analyze mite’s leg chaetotaxy, calculate the prevalance and intensity of mite infestation, and learn the diversity of ectoparasites mites on gecko in the inside and outside of Taman Margasatwa Ragunan. Mites were prepared by whole mount method using polyvinyl alcohol media. Identification results based on characters of mites found twelve species of Geckobia (G1, G2, G4, G5, G6, G7, G10, G11, G12, G13, G18, and G19). However, based on chaetotaxy, the G2, G4, and G6 were grouped in Geckobia grup 1, G10 in group with G. gleadoviana, G11 in group with G. indica, G13 in group with G. keegani, and G19 in group with G. oedurae. The G1, G5, G7, G12, and G18 in the new group Geckobia. The highest of mite infestation intensity on gecko C. platyurus was mite G4. The highest of mite infestation intensity on gecko H. frenatus was mite G1, and gecko H. garnotii was mite G10. H. garnotii has the largest infestation intensity values.
Keyword: Bogor Agricultural University (IPB), Taman Margasatwa Ragunan, Geckobia, gecko, ectoparasite, chaetotaxy

Judul: Inventarisasi dan Identifikasi Tungau Ektoparasit pada Cicak di Kabupaten Cianjur
Abstrak: Ectoparasite mites are parasitic organisms that live on the surface of the host, sucking the blood or feed on hair, fur, skin, or skin secretions. This research aim to inventarisation and identification of mites ectoparasites on gecko in Cianjur areas. The research was conducted from January 2012 until July 2012. Gecko and mites were collected and preserved in 70% alcohol. Whole mount of the mites was prepared used polyvinyl alcohol media. The result showed that there are three species of gecko (Cosymbotus platyurus, Hemidactylus frenatus, and Gehyra mutilata) was infested by Geckobia mites. There are new seven spesies of Geckobia (G4, G5, G6, G7, G10, G11, and G12). Analysis of the presence of mites done by calculate the value of prevalence (P), the average intensity of infestation (I), and the total intensity (It). The prevalence in C. Platyurus gecko (P = 74.38%) is higher than G. mutilata (P = 50%), and H. frenatus (P = 33.33%), while the average infestation intensity (I) and total intensity (It) is the highest found in G. mutilata (I = 10 and It = 11). Geckobia G4 and Geckobia G10 were found only on C. platyurus; Geckobia G5 and Geckobia G12 were found on C. platyurus and G. mutilata; Geckobia G6 were found on whole infected gecko; Geckobia G7 were found on C. platyurus and H. frenatus; and Geckobia G11 were found on H. frenatus and G. mutilata. So it is concluded that the new seven species mites has not a specific distribution pattern of their hosts.
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Judul: Membran Komposit Polistirena Tersulfonasi–SiO2 untuk Aplikasi Direct Methanol Fuel Cell
Abstrak: Nafion® merupakan membran elektrolit pada direct methanol fuel cell (DMFC) yang memiliki nilai permeabilitas metanol yang tinggi. Oleh karena itu, membran alternatif seperti polistirena tersulfonasi (PSS) yang ditambahi SiO2 dikembangkan untuk mengurangi tingginya permeabilitas metanol tersebut. Penelitian ini bertujuan menentukan pengaruh tambahan SiO2 pada kinerja PSS. Keberhasilan proses sulfonasi ditunjukkan oleh nilai derajat sulfonasi (DS) dari PSS dengan konsentrasi PS 15% sebesar 81%. Membran komposit dibuat dengan ragam konsentrasi 3%, 5%, dan 7%. Spektrum inframerah transformasi fourier membran komposit menunjukkan gugus sulfonat (-SO3) pada 1008 cm-1 dan O-Si-O pada 1013 cm-1. Nilai konduktivitas proton dan beda potensial tertinggi dihasilkan pada membran PSS-SiO2 3% dengan nilai berturut-turut 2.1 × 10-4 S/cm dan 79 mV. Berdasarkan hasil tersebut, membran komposit PSS-SiO2 dapat diaplikasikan untuk DMFC.
Keyword: membran komposit, SiO2, polistirena tersulfonasi, sel bahan bakar metanol