Judul: Membrane electrode assembly dari komposit polisulfon-zeolit untuk aplikasi microbial fuel cell
Abstrak: Penelitian ini membuat membrane electrode assembly (MEA) berbasis membran komposit polisulfon-zeolit untuk aplikasi microbial fuel cell (MFC). Membran komposit diperoleh dengan menambahkan zeolit sebagai matriks dengan konsentrasi zeolit 5%, 10%, dan 15%. MEA dibuat dengan menyalut membran komposit PSf-zeolit teraktivasi dengan elektrode berkatalis Ag/C 20% dengan metode pres panas. Keberhasilan pembuatan MEA terlihat dari morfologinya yang dicirikan menggunakan mikroskop elektron pemayaran dengan terbentuknya salut karbon dan membran komposit pada penampang lintang MEA. Nilai konduktivitas proton dan beda potensial tertinggi dihasilkan pada MEA PSf-zeolit 5% dengan nilai berturut-turut 1.2577 × 10-3 S/cm dan 0.198 V. Berdasarkan hasil tersebut, MEA PSf-zeolit dapat diaplikasikan dalam sistem MFC.
Keyword: composite membrane, membrane electrode assembly, microbial fuel cell, polysulfone, zeolite

Judul: Membrane Electrode Assembly Komposit Polisulfon-Monmorilonit Untuk Aplikasi Microbial Fuel Cell
Abstrak: Membrane electrode assembly (MEA) dibuat untuk meningkatkan kinerja membran polisulfon-monmorilonit. MEA dibuat dengan menambahkan katalis AgNO3/C 20% pada membran teraktivasi dengan metode kempa panas selama 3 menit. Konsentrasi monmorilonit yang ditambahkan untuk membuat membran komposit yaitu 2%, 3%, dan 4%. Morfologi MEA dianalisis menggunakan mikroskop elektron pemayaran (SEM). Hasil SEM menunjukkan terbentuknya lapisan karbon dan membran komposit pada penampang lintang MEA. MEA PSf-monmorilonit 3% menghasilkan nilai konduktivitas proton dan beda potensial tertinggi sebesar 1.2577 × 10-3 S/cm dan 0.162 V. Hal ini menunjukkan bahwa MEA PSf-monmorilonit dapat diaplikasikan untuk microbial fuel cell (MFC).
Keyword: membrane electrode assembly, membran komposit, microbial fuel cell, monmorilonit, polisulfon

Judul: Ragam jenis ektoparasit burung tekukur (Streptopelia chinensis) dan burung puter (Streptopelia bitorquata) di penangkaran
Abstrak: Spotted dove and Javan turtle dove are the bird species that are easily raised in captivity. Nevertheless, good management is required to successfully breed and raise the birds in captivity; otherwise, the condition may endanger the sustainability of the two bird species. Information on ectoparasites on the bodies of this bird as well as their captivity breeding has not been available, although admittedly taking ectoparasites from these bird families has much been done so that a research is obviously needed. This study aimed to find out various kinds of Spotted dove and Javan turtle dove ectoparasites and to learn various kinds of parasitic insects around the Spotted dove and Javan turtle dove cages. The study was conducted from April to June 2010. The methods of data collection included the general condition of the location, collection of ectoparasites specimens, processing and specimens identification. The data analysis was done descriptively and tabulated with the degree of infestation. The kinds of ectoparasites from the class of insects found in the body of Spotted dove were Goniocotes sp. and Columbicola columbae of phthiraptera order and Pseudolynchia canariensis of diptera order, and arachnida class, that is, tungau from the pterolichidae family. In terms of ectoparasites, Spotted dove and Javan turtle dove were similar, except that Javan turtle dove had no Pseudolynchia canariensis. Goniocotes sp. and Columbicola columbae were mallopaga order (biting lice) and were obligate. The kinds of parasitic insects in the vicinity of Spotted dove and Javan turtle dove cages were from the Ordo Diptera. The diptera classified as parasites included Anopheles, Culex, Psychodidae, Culicoides and Simulium, most of them vectors of disease. The presence of ectoparasites was closely related to how a breeding place is managed.
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