Judul: Studi keragaman, dan kelimpahan burung di berbagai habitat di hutan Wanagama I, Daerah Istimewa Yogyakarta
Abstrak: Penelitian tentang keragaman dan kelimpahan burung burung bertujuan untuk mengetahui kekayaan jenis burung, kondisi habitat dan keterkaitan komunitas burung tersebut dengan habitatnya di Hutan Wanagama I. jakan pada bulan Maret Hutan Wanagama I. Penelitian diker Juni 1993 di seluruh kawasan Metode penjelajahan digunakan untuk mengetahui kekayaan jenis burung. Untuk mengetahui kelimpahan tiap jenis burung dipakai metode (points counts). sensus titik Kondisi habitat diukur dengan metode contoh protocol dan analisis vegetasi metode fisiognomi. Hutan Wanagama I dibagi menjadi lima sub-habitat. Tegalan yang terdapat di sekitar kawasan hutan juga dilakukan pengamatan. Hasil penelitian: di seluruh kawasan hutan Wanagama I ditemukan 63 jenis burung, termasuk dalam 32 famili. Sub- habitat hutan tanaman campur mempunyai keragaman jenis paling tinggi (kekayaan jenis = Brillouin (H) = 51, indeks keragaman 3.85) dan sub-habitat semak yang paling..dst
Keyword: Habitat burung, Jenis burung, Hutan Wanagama

Judul: Keanekaragaman jenis Burung pada beberapa tipe Habitat di Hutan Penelitian Dramaga, Bogor, Jawa Barat
Abstrak: Dramaga Research Forest, located in the outskirt of Bogor, provides a good habitat for birds. This research was aimed to study bird diversity, identifying habitat characteristics (around the forest path, along house edge, riparian habitat and the interior area) and recorded the activities of the local people around the forest. Point count, MacKinnon list, habitat profiling and interviews were conducted. Shannon-Wiener diversity indices and similarity level were calculated. The highest index of species diversity was in the interior area (2.34), followed by around the forest path (2.21), along house edge (1.97) and riparian habitat (1.86). The highest species richness, however, was in the riparian habitat (27 species), the forest path had 21 species, along house edge had 26 species, while the interior area was a home for 21 bird species. The highest similarity (0.81) was between forest path and interior area. On the activities of the local people, the most often was firewood harvesting. Other activities were hunting for cage birds, harvesting ferns, harvesting wild fruit and harvesting ant larvae. Activity that might disrupt the bird population was hunting.
Keyword: Bogor Agricultural University (IPB), Dramaga research forest, human activities, Bird diversity, Streptopelia chinensis, Orthotomus sepium

Judul: Model Kinetika Reaksi Nanopartikel Ketoprofen Tersalut Gel Kitosan-Alginat Berdasarkan Uji Disolusi secara In Vitro.
Abstrak: Modification of chitosan gel by natural hydrogels such as alginate with trypolyphosphate (TPP) crosslinker are potential to be applied as good coating materials in drug delivery system. Most of the drug delivery system studied, however still in micro size. Therefore in this study, chitosan-alginate gel with TPP crosslinker was used to coat ketoprofen in nanocapsules by using spray drying method with variation of chitosan, alginate, and TPP concentration. The kinetic reaction model was determined based on in vitro dissolution test. The size of nanoparticles obtained in this study was about 220–8857 nm. The dissolution test showed that ketoprofen coated by chitosan-alginate crosslinked with TPP had controlled release in acid medium and maximum release in base medium. In general, the ketoprofen releasing kinetic model followed Higuchi, Korsmeyer- Peppas, and Hixson-Crowell equations.
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