Judul: Perilaku yang berhubungan dengan pola makan walabi kecil (Dorcopsulus vanheurni) betina di penangkaran pada siang hari
Abstrak: Small wallaby (Dorcopsulus vanheurni) is one type of animal from marsupial group. This spesies is similar in its appearance to that of kangaroo, but it has a smaller body size than kangaroo. Due to forest exploration and habitat destruction, population of small wallaby has declined. One of the method to conserve the spesies is captive breeding program (ex-situ). Understanding the behaviour of small wallaby in captivity is important, especially their feeding behaviour.
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Judul: Preferensi Pakan dan Perilaku Makan Walabi Lincah (Macropus agilis Peters and Doria,1875) di Kebun Binatang Gembira loka Yogyakarta.
Abstrak: Agile wallaby (Macropus agilis Peters and Doria, 1841) is a marsupial fauna endemic in Papua. Population of agile wallaby is declining significantly because of illegal hunting, reducing and changing of their savanna habitat, competition with timor deer (Rusa timorensis), and forest fire. One of ex-situ conservation strategy of agile wallaby is the captive breeding. Food preference and feeding behavior is the important factor in the breeding. This research used Focal Animal Sampling method. The result research shows that the most prefered feed is water spinach (Ipomea reptans) with the index is 1.58. Based on the test Chi-Square (X2) test known significant (P > 0.05), that the behavior of eating males and females wallaby are not far different from pattern of walking, approach, taking, chewing and ruminating. The palatability and the highest feed preferences on the type of water spinach and the common feeding behavior of agile wallaby are by walking, probing by smelling, eating, chewing and ruminating.
Keyword: food preferences., feeding behavior, feeding palatability, consumption, agile wallaby

Judul: Karakteristik Piezoelektrik Film LaxSr₁-xTiO3 di atas Substrat TCO
Abstrak: Studi material perovskite SrTiO3 sudah banyak dilakukan dan menunjukkan sifat feroelektrik, piezoelektrik, kuantum paraelektrik dan superkonduktor yang baik. Dengan penambahan dopant La2O3 diduga menambah performa sifat piezo dan karakteristik lainnya. Karakteristik film LaxSr₁-xTiO3 (LST) dengan variasi x= 0, 0.02, 0.04, 0.06 terbentuk pada suhu annealing 550 oC di atas substrat TCO melalui metode (Chemical Solution Deposition) CSD dan spin coating dengan 700 rpm pada kondisi suhu ruang dan tekanan atmosfer standar. Hasil menunjukkan, semakin banyak pendadah La maka nilai ketebalan film, ukuran rerata kristalit, parameter kisi, transmitansi, nilai konduktivitas (maksimum 589.7 S/cm pada sampel x=0.04 di frekuensi 10 Hz), nilai konstanta tegangan (c) dan muatan (d) piezo semakin meningkat. Dinamika bentuk grafik nilai tegangan (V) dan konstanta regangan mekanik (s) nampak mirip. Nilai V mencapai 0.127 V untuk x=0.06 (beban 50 g). Nilai maksimum c, d, s masing-masing mencapai 20.07 Vm/N, 1.14x10-8 C/N, 13642.71. Nilai band gap untuk x=0, 0.02, 0.04, 0.06 masing-masing 3.21 eV, 3.1 eV, 2.6 eV, 2.4 eV. La2O3 menambah performa sifat piezo, sehingga LST berpotensi sebagai sensor tekanan.
Keyword: CSD method, La2O3, LaxSr1-xTiO3, piezoelectric, TCO