Judul: Komposit Fe3O4 dan Kopolimer Cangkok Biner Asam Akrilat dan Akrilamida pada Onggok Sebagai Penjerap Logam Berat
Abstrak: Polimer superabsorben (PSA) dan Fe3O4 adalah dua material yang dapat berfungsi sebagai adsorben logam berat. Tujuan penelitian ini adalah meningkatkan daya adsorpsi PSA dengan menambahkan Fe3O4, serta material yang dihasilkan diharapkan mampu menyederhanakan proses pemisahan dibanding material semula yang belum digabungkan. Uji daya jerap PSA, Fe3O4, dan komposit PSA-Fe3O4 terhadap ion logam Cu2+ dan Ni2+ menunjukkan PSA memiliki daya jerap yang paling tinggi. Nisbah asam akrilat:akrilamida (2:1) memiliki daya adsorpsi ion logam Cu2+ dan Ni2+ paling baik hampir di semua jenis adsorben yang dibuat. PSA dengan kode S4 memiliki daya jerap terhadap ion logam Cu2+ terbesar yaitu sebesar 80.53%. Daya jerap dari komposit PSA-Fe3O4 umumnya masih lebih rendah dibandingkan PSA.
Keyword: adsorpsi, Fe3O4, polimer superabsorben, logam

Judul: Adsorben Logam Berat dari Kopolimerisasi Cangkok Biner Asam Akrilat dan Akrilamida pada Onggok
Abstrak: To improve properties of superabsorbent polymer (PSA) synthesized from onggok (cassava residual pulp), we have grafted binary monomer mixture of acrylic acid and acrylamide onto onggok in aqueous medium using APS as initiator. Some factors of the synthesis studied were loading sequence of monomer, addition of cross-linker, and absorption capacity. Testing was also performed by infrared spectroscopy. The PSA A1, which is created by grafting of acrylic acid and acrylamide without cross-linker, showed the highest water absorption of 370 g/g. The PSA A1 effectively absorbed water at pH 9 and the absorption capabilities were affected by levels of salinity of the medium. The PSA also potential as Cu2+ metal ion adsorbent.
Keyword: superabsorbent polymer, cassava residual pulp, binary graft copolymerization, acrylic acid, acrylamide, adsorption

Judul: Etno-ornitologi Burung Kancilan Flores (Pachycephala nudigula nudigula Hartert 1897) pada Masyarakat Lio di Taman Nasional Kelimutu
Abstrak: Bare-throathed whistler is one of several wild birds in Kelimutu National Park (TNKL) that is believed to have correlation with Lio Community‟s belief. The estimation of Bare-throated whistler‟s population in Kelimutu National Park was about 186.41-1668.07 individual by the density about 0.0389-0.3481 ind/ha with the sex ratio 6.2:1 that spreaded on area with height of 1100 – 1600 masl. The characteristic of Bare-throated whistler‟s habitat is a natural forest with various canopy level, high plant species diversity and high density. The habitat characteristics related to the availability of food in the form of insects, cover, safety and a nesting site. Generally the most of Lio community knew the existence of Bare-throated whistler directly or from their parents‟ stories. The perceptions of Lio Community to the Bare-throated whistler‟s existence is generally support the conservation efforts. The perceptions construct the Lio Community‟s atitude that tend to be conservative to the existence of Bare-throated whistler. The attitude shown by their behavior that not cathing the Bare-throated whistler from the TNKL‟s area or the outside. The attitude have an important role to the existence of Bare-throated whistler in Kelimutu National Park‟s area.
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