Judul: The Diversity of Wild Birds in Ragunan Zoological Park, Jakarta.
Abstrak: Ragunan Zoological Park lies at Jalan Harsono RM No.1 South Jakarta with an area of 1.4 km2. The wild birds inside Ragunan Zoological Park changes in number and diversity everytime an observation was held. The purpose of this research is to know the diversity and density of wild birds in Ragunan Zoological Park. Observation was held from Monday-Friday, 06.00-10.00 AM and 1.30-5.00 PM during bright day or if it is not raining. Identified wild birds were analized using Shannon-Wienner index and I.P.A count. There were 64 species and 28 families of wild birds found. Shannon-Wienner index value for morning and afternoon obsevation are 2.66 and 2.62 which means the wild birds are sufficiently diversed. There were 17 new records found in this research. The different number and diversity of wild birds compare to previous observation may due to human presence and different bird observation methods used. Streptopelia chinensis has the highest density value for morning and afternoon observation, 2.77 and 3.28. Human presence, bird activity and environmental factors caused the differentiation of density value. Most wild birds have distribution area from Sumatera, Java, Bali and Borneo.
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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: Cream Formulation Using Avocado Oil Nanoemulsion with Addition of Nanocellulose as Stabilizer
Abstrak: Minyak alpukat merupakan sumber asam lemak tak jenuh tunggal tingkat tinggi dan senyawa penting lainnya. Minyak alpukat telah digunakan di banyak bidang, termasuk perawatan kulit dalam bentuk produk krim. Krim merupakan emulsi yang memiliki faktor penting dalam mutunya yaitu stabilitas. Kestabilan produk krim didukung oleh formulasi, teknik emulsifikasi dan emulsifier. Manfaat nanoemulsi adalah untuk membawa senyawa aktif lipofilik tinggi dan obat-obatan serta meningkatkan kualitas produk. Salah satu aspek terpenting dalam pembentukan emulsi adalah pemilihan emulsifier, karena memiliki peran dalam menyerap minyak pada antarmuka air. Nanoemulsi yang dibuat akan ditambahkan nanoselulosa sebagai stabilizer. Tujuan umum dari penelitian ini adalah untuk menghasilkan krim dari nanoemulsi minyak alpukat dengan penambahan nanoselulosa. Tujuan khusus dari penelitian ini yaitu (1) mengevaluasi pengaruh penambahan nanoselulosa terhadap stabilitas formulasi nanoemulsi minyak alpukat (2) mengidentifikasi karakteristik dan stabilitas nanoemulsi minyak alpukat pada formulasi krim. Adapun tahapan dari penelitian ini, pertama ekstraksi minyak alpukat menggunakan metode press cold. Kemudian tahap kedua yaitu sintesis nanoselulosa menggunakan hidrolisis asam (H2SO4). Tahap ketiga yaitu proses nanoemulsi dengan variasi formulasi nanoselulosa CNC, dietanolamida (DEA) dan minyak alpukat menggunakan ultrasonicator. Tahap keempat yaitu formulasi krim nanoemulsi minyak alpukat. Hasil penelitian menunjukkan bahwa nanoemulsi minyak alpukat formulasi I dengan konsentrasi DEA 3,5%, memiliki persentase stabilitas terbaik karakterisasi ukuran partikel terkecil yaitu 114,37 ± 0,38 nm, zeta potential -29,5 ± 1,23 mV, dan PdI 0,0935 ± 0,0135. Namun, pada formulasi II dengan konsentrasi CNC 1% dan DEA 3,5% ukuran partikel 148,2 ± 0,56 nm, zeta potential -32 ± 0,4 mV, dan PdI 0,12 ± 0,00608 memiliki presentasi stabil yang mirip dengan formulasi I pada minggu pertama penyimpanan. Karakterisasi krim nanoemulsi pada perlakuan terbaik tidak menunjukkan perubahan selama penyimpanan 8 minggu.
Keyword: minyak alpukat, nanoemulsi, nanokristal selulosa, nanoselulosa, stabilitas