Judul: Populasi Dan Habitat Monyet Ekor Panjang (Macaca Fascicularis) Di Cagar Alam Dungus Iwul, Kabupaten Bogor
Abstrak: Cagar Alam Dungus Iwul dengan luasan ± 9 ha merupakan salah satu habitat alami monyet ekor panjang (Macaca fascicularis). Hasil penelitian menunjukkan terdapat dua kelompok monyet ekor panjang dengan ukuran populasi yang berbeda. Kelompok 1 terdiri dari 56 individu, sedangkan kelompok 2 terdiri dari 29 individu. Kepadatan populasi monyet ekor panjang sebesar 9 individu/ha, dengan struktur umur terbanyak yaitu individu muda. Sex ratio individu dewasa pada kelompok 1 (1:1.6) dan pada kelompok 2 (1:2.25). Aktivitas harian yang paling sering dilakukan oleh kelompok 1 adalah makan (29.50 %), sedangkan kelompok 2 adalah berpindah (36.70 %). Wilayah jelajah kelompok 1 seluas 12.43 ha dengan jelajah harian 527.67 m, sedangkan kelompok 2 seluas 9.95 ha dengan jelajah harian 469.33 m. Penggunaan ruang oleh monyet ekor panjang lebih banyak pada strata tajuk C (4-20 m) sebesar 44.69 %. Analisis vegetasi pada habitat monyet ekor panjang ditemukan 41 jenis tumbuhan diseluruh petak contoh. Tumbuhan iwul (Orania sylvicola) merupakan tumbuhan yang paling dominan. Pakan yang paling sering di makan monyet ekor panjang adalah buah dengan persentase 61 %. Potensi pakan hasil analisis vegetasi sebanyak 31 jenis tumbuhan.
Keyword: habitat, monyet ekor panjang, populasi, sex ratio

Judul: Studi Populasi dan Habitat Monyet Ekor Panjang (Macaca fascicularis) di Cagar Alam Pananjung Pangandaran Jawa Barat
Abstrak: Pananjung Pangandaran Nature Reserve is one of natural habitat for long-tailed macaque (Macaca fascicularis). This wildlife was listed as Least Concern status in IUCN (2013) and Appendix II in CITES. The result of the research, which was done in three observation tracks, showed a different density of long-tailed macaque. The greatest population density was found as Karang Pandan (22 ind/ha), while at second track (Tadah Angin) were 4 individuals/ha, and at the third track (Cikamal) there were 19 individuals/ha. The range of population at the first track as many as 22 ± 9 individuals, at the second track as many as 4 ± 2 individuals, and third track as many as 7 ± 4 individuals. The adult long-tailed macaque was found at most in this research. Sex ratio of long-tailed macaque at the first and third track was 1:4, and at the second track was 1:3. There were 48 plant species that were found in the area where the long-tailed macaque carried out their activity, and 22 of the species had potential for long-tailed macaque feed.
Keyword: population, Macaca fascicularis, habitat, density

Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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