Judul: Perilaku Seksual Monyet Ekor Panjang (Macaca Fascicularis) di Makam Kramat Solear, Kabupaten Tangerang
Abstrak: Perilaku seksual merupakan salah satu interaksi antara jantan dewasa dengan betina dewasa yang sedang estrus. Perihal seksual penting peranannya dalam memelihara kelangsungan kelompok. Ada dua macam perilal'U yang terdapat pada setiap individu yaitu petilal'U innole dan leamillg. Peril"ku seksual merupakan salah satu perilaku belajar (/eaming). Penelitian ini untuk mengetahui pola perilaku seksual monyet ekor panjang (M. fascicularis) di Makam Kramat Solear, Kabupaten Tangerang. Pengamatan dila1.'Ukan dengan menggunakan metode ad libitum sampling, scan sampling, dan focal animal sampling. Interval \Vakiu yang digunakan adalah satu meni!. M. fascicularis termasuk hewan poligarni dan tidak mempunyai musim kawin. Betina yang sedang beral.li. lebili aktif datipada biasanya, lebih sering menyerang dan juga diserang olell betina lain. Pada puncak berahinya seringkali betina dilindungi olell seekor jantan yang menyertainya. Penaikan (mOUnIing) dapat dilangsungkan dengan permohonan ataupun dengan pemmaan dan penaikan bisa terjadi secara langsung maupun tidak langsung. Ada hubungan antara penaikan dengan peringkat individu dalam kelompok. Semakin tinggi peringkat individu jantan dalam kelompok maka semakin besar pula peluang individu tersebut mendapatkan betina yang diinginkan. Betina yang mempunyai peringkat lebili linggi memperoleh kesemp.tan yang besar Imtuk mendapatkan jantan dominan. Jantan yang berbed. peringkat, masingmasing dapat memonopoli satu atau barangkali beberapa betina lvi fascicularis melakukan penaikan dengan single mount-fo-ejaculate dan multiple mount-/oejaculate. Narnunpenaikan yang sering dilakukan adalah single mount-to-ejaculate.
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Judul: Perilaku seksual monyet ekor panjang (Macaca fascicularis) di Bumi Perkemahan Pramuka Cibubur, Jakarta
Abstrak: Sexual behavior is one of interaction between adult or subadult male and female that has significant role in maintaining group existency. Long-tailed macaques live in multi male multi fe~nale group, polygamous, and has no breeding season. Sosial behavior influenced by sosial hierarchy. Sexual behavior consists of mounting, intromission, thrusting, ejaculation, and dismounting. The objective of this study was to assess sexual behavior of long-tailed macaque (M. fasciszrlaris) in Bumi Perkemahan Pramuka Cihubur, Jakarta. The observation was carried out using ad libitum sampling and focal animal sampling. Daily activities were observed between 06.00 a.m. and 06.00 p.m. for 80 days (329 hour 17 minutes). Sexual activity occured in 2.33 % of total daily activity, and slowed higher frequency in the morning (06.00-10.00 a.m.) than other period of time: afternoon (10.00 a.m.-02.00 p.m.) and evening (02.00-06.00 p.m.). Sexual activity was identified has higher frequency on the ground than other places. The average duration of copulatory was 4.19 second. The high rank male did a lot of copulation, and genital inspect. Mostly, copulation occured without genital inspect. Male and female monkeys are more likely to take a rest after copulation.
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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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