Judul: Habitat Characteristics, Population, and Distribution of Long-tailed Macaque (Macaca fascicularis) in IPB Dramaga Campus
Abstrak: Macaca fascicularis salah satu jenis mamalia yang terdapat di Kampus IPB Dramaga. Pembangunan yang dilakukan di Kampus IPB Dramaga membuat semakin berkurangnya tutupan yang biasa dijadikan sebagai habitat oleh monyet ekor panjang. Penelitian bertujuan mengidentifikasi karakteristik habitat, mengukur populasi serta menganalisis persebaran monyet ekor panjang. Penelitian dilakukan pada bulan April – Mei 2021 dengan analisis vegetasi dan metode concentration count. Monyet ekor panjang menempati habitat yang memiliki suhu udara berkisar antara 26,5°C – 27,3°C dengan kelembaban relatif 88,5% - 92%. Jenis paling dominan pada masing-masing tingkat yaitu Syngonium podophyllum, Geophila repens, dan Costus woodsonii di tingkat semai. Aphanamixis polystachya, Hevea brasiliensis dan Cinnamomum verum di tingkat pancang. Hevea brasiliensis dan Shorea leprosula di tingkat tiang. Spathodea campanulata, Ficus benjamina, dan Hevea brasiliensis di tingkat pohon. Terdapat 13 jenis tumbuhan dengan bagian yang paling banyak dimanfaatkan sebagai pakan yaitu bagian buah dengan persentase sebesar 57,14%. Populasi terhitung sebanyak 53 individu dengan kepadatan 3,14 individu/ha serta nisbah kelamin jantan dan betina sebesar 1:1,1 untuk nisbah kelamin total dan 1:1,2 untuk nisbah kelamin produktif., Macaca fascicularis is one of the mammals that can be found in IPB Dramaga Campus. The development carried out at IPB Dramaga Campus has reduced the cover that used to be used as habitat by long-tailed macaques. The research aims to identify habitat characteristic, population and analyze the distribution of long-tailed macaque. The research was conducted in April – May 2021 using vegetation analysis and concentration count method. Long-tailed macaque occupied habitat that has air temperatures around 26,5°C – 27,3°C with 88,5% - 92% of relative humidity. The most dominant species are Syngonium podophyllum, Geophila repens, and Costus woodsonii for seedling. Aphanamixis polystachya, Hevea brasiliensis, and Cinnamomum verum for sapling. Hevea brasiliensis and Shorea leprosula for pole. Spathodea campanulata, Ficus benjamina, and Hevea brasiliensis for tree level. There are 13 types of plants with the most widely used part is the fruit part with 57,14%. The population was calculated that there were 53 individuals with 3,14 individuals/ha and a male to female sex ratio with 1:1,1 for total sex ratio and 1:1,2 for productive sex ratio.
Keyword: habitat, population, long-tailed macaque

Judul: Pendugaan Parameter Demografi, Gangguan, dan Upaya Penangkapan Monyet Ekor Panjang di Kampus IPB Dramaga
Abstrak: Keberadaan monyet ekor panjang yang semakin berdekatan dengan ruang lingkup aktivitas manusia seperti di Kampus IPB Dramaga Bogor menimbulkan gangguan terhadap kegiatan manusia. Penelitian ini bertujuan untuk menduga parameter demografi, mengidentifikasi gangguan, dan menganalisis efektvitas kandang jebakan monyet ekor panjang di Kampus IPB Dramaga. Penelitian dilakukan dengan metode observasi lapang, penyebaran kuisioner, dan pemasangan kandang jebakan untuk penangkapan monyet ekor panjang. Hasil penelitian menunjukkan terdapat 3 kelompok monyet ekor panjang yang menempati Kampus IPB Dramaga (Kawasan Hutan Al-Hurriyah, Asrama Putra C4, dan Arboretum Bambu) dengan jumlah total populasi sebanyak 53 individu. Struktur populasi monyet ekor panjang menunjukkan kondisi yang menurun dan jumlah individu jantan lebih sedikit (18 ekor) dibandingkan dengan individu betina (20 ekor). Gangguan monyet ekor panjang yang paling banyak yaitu mencuri barang/ makanan, diikuti dengan merusak properti dan menyerang orang. Penggunaan kandang jebakan kelompok pintu atas dan pintu depan tidak efektif menangkap monyet ekor panjang sebagai upaya mengatasi gangguannya di Kampus IPB Dramaga., The existence of long-tailed macaques whose distribution is close to human community, such as Kampus IPB Dramaga, causes disturbance to human activities. This study aims to estimate the demographic parameters, identify disturbances, and analyze the effectiveness of the long-tailed macaques trap cage at the Kampus IPB Dramaga. The research was conducted by field observations and distributing questionnaires. The results showed that there were three groups of long-tailed macaques that occupy Kampus IPB Dramaga (Hutan Al-Hurriyah, Asrama Putra C4, and Arboretum Bambu area) with a total of 53 individuals. The population structure of the long-tailed macaques shows a regressive population and the number of male individuals (18 individuals) is less than female individuals (20 individuals). Disturbances that caused by long-tailed macaques were stealing goods/ food, property damaging, and attacking people. Group trap cages that were used to catch long-tailed macaques is not effective to use on Kampus IPB Dramaga as an effort to overcome their disturbances at Kampus IPB Dramaga.
Keyword: monyet ekor panjang, parameter demografi, gangguan, demography parameters, disruptions, long-tailed macaques

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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