Judul: Sintesis dan Pencirian Hidrogel Superabsorben Poli(Asam Akrilat)-ko-Polivinil Pirolidon dengan Teknik Iradiasi Gamma
Abstrak: Hidrogel superabsorben (HSA) yang bertaut silang membentuk struktur 3 dimensi, mampu menyerap air ratusan kali bobot keringnya dan tidak larut dalam air. Penelitian ini bertujuan menyintesis dan mencirikan HSA poli(asam akrilat-ko-polivinil pirolidon) dengan iradiasi gamma. Dosis radiasi yang digunakan untuk sintesis sebesar 10 kGy. HSA dengan tambahan 1 g polivinil pirolidon (PVP) menghasilkan nisbah pengembungan tertinggi yakni 659.4g/g. Penambahan PVP akan menurunkan nisbah pengembungan HSA. Fraksi gel tertinggi ialah 68.57% diperoleh dari penambahan 1 g PVP. HSA ini dapat diaplikasikan sebagai bahan dasar popok karena pengujian dalam larutan NaCl dan urea memenuhi aturan yang telah ditetapkan oleh ISO 17190-5-2001.
Keyword: asam akrilat, hidrogel, iradiasi gamma, polivinil pirolidon

Judul: Sintesis dan Pencirian Hidrogel Superabsorben Poli(Kalium Akrilat-ko-NIPAAm) dengan Iradiasi Gamma
Abstrak: Hidrogel superabsorben (HSA) adalah polimer bertaut silang yang mampu menyerap air ratusan hingga ribuan kali dari bobot keringnya, tetapi tidak larut dalam air disebabkan oleh struktur 3 dimensi pada jaringan polimernya. Tujuan penelitian ini adalah menyintesis HSA poli(kalium akrilat-ko-NIPAAm) dengan iradiasi gamma serta penciriannya. Konsentrasi penetralan asam akrilat dan dosis iradiasi yang menghasilkan nilai nisbah pengembung dan equilibrium degree of swelling (EDS) tertinggi, yaitu pada konsentrasi penetralan 50% mol KOH dan dosis iradiasi 5 kGy. HSA poli(kalium akrilat-ko-NIPAAm) dengan tambahan 0.50 g NIPAAm menunjukkan nilai nisbah pengembung tertinggi, yaitu 1969 g/g pada waktu perendaman 25 menit dan EDS sebesar 1557 g/g. Penambahan NIPAAm ini dapat meningkatkan nisbah pengembung HSA hampir 2 kalinya dibandingkan HSA poli(kalium akrilat) (tanpa NIPAAm). HSA poli(kalium akrilat-ko-NIPAAm) dicirikan menggunakan spektrofotometer inframerah transformasi Fourier, kalorimetri pemayaran diferensial, dan mikroskopi elektron payaran.
Keyword: asam akrilat, hidrogel superabsorben, iradiasi, NIPAAm

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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