Judul: Pendugaan kelimpahan jenis rambat (Sonneratia spp.) sebagai sumber pakan utama bagi bekantan (Nasalis larvatus Wurmb) dan kemungkinan pengelolaannya di cagar alam pulau kaget Kalimantan Selatan
Abstrak: Pakan merupakan faktor pembatas bagi kelangsungan hidup satwaliar. Habitat, yang merupakan salah satu komponen kunci yang harus dikelola dalam pengelolaan satwaliar, harus dapat menyediakan pakan yang cukup, baik secara kualitas maupun kuantitas. Nilai kelimpahan dapat menggambarkan struktur suatu habitat dan jumlah ketersediaan pakan serta cover bagi satwaliar. Dan secara subyektif kelimpahan dapat menggambarkan kepadatan populasi secara umum. Penelitian ini dilakukan di Cagar Alam Pulau Kaget dar bertujuan untuk mengetahui: (1) Kebutuhan pakan seekor bekantan perhari akan jenis pakan utamanya (pucuk Sonneratia spp.); (2) Komposisi kimia pucuk, buah masak, buah mentah dan akar nafas Sonneratia spp dibandingkan dengan jenis yang kurang disukai (bunga Crinum asiaticum) dan jenis yang tidak dimakan (pucuk Gluta renghas) melihat pengaruhnya pada pemilihan jenis (3) Ketersediaan sumber pakan tersebut dan (4) untuk pakan; faktor-faktor yang mempengaruhi ketersediaan pakan utamanya dan cara pengelolaannya. Pendugaan kebutuhan pakan bekantan perhari dilakukan dengan pengamatan frekwensi pengambilan daun rata-rata dalam satu menit dan penimbangan berat ransum perhari di Kebun Binatang Ragunan. Komposisi kimia pakan diketahui analisis proksimat (metode Weende). Metode penghitungan ranting digunakan untuk menduga ketersediaan sumber pakan. ...
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Judul: Studi Keanekaragaman Jenis Tumbuhan Pakan Bekantan (Nasalis Larvatus) Di Taman Nasional Tanjung Puting Kalimantan Tengah (Studi Kasus Di Areal Research Pondok Ambung )
Abstrak: Bekantan (Nasalis larvatus) is one of an endemic primate in Indonesia, especially in Kalimantan and this species protected by the law. Bekantan had a priority to be an object in food ecology research because of this species is rare and also endemic. Their habitat limited in forest around the rivers, mangrove and peat swamp forests and nowadays some of that threatened by human activities. On February, 22nd 2008 fire attack Pondok Ambung Areal Research part of Tanjung Puting National Park which burned around 5,6 ha. This damage decrease the number of bekantan population along the year. Because of that, conservation action needed into population of bekantan, ecosystem of peat swamp forest and swamp forest around the rivers. Study about food variety in bekantan especially at Tanjung Puting National Park, Province of Center Kalimantan really important as an a conservation action in population of bekantan. Direct and indirect identification of feed variety was used as method to collect the data. Direct observation was conducted for 12 days on 4 groups of bekantan. Vegetation analyze was conducted by using line transect method. This study found 11 species that consumed by bekantan in 12 observation days. From 12 time monitoring, most after consumed vegetation is Genua motleyana, but they just consumed the leaves. Crudia teysmanii and Eugenia zeylanica are another choice often Genua motleyana. In Eugenia zeylanica, bekantan just consumed the flowers and leaves. Comparison between leaves : flowers : fruit is 79% : 18 % : 3%. Result from vegetation analysis in swamp forest and lowland forest found 22 food variety of bekantan. Result from species diversity indexs (Shannon- Wieners index) showed foods variety level in swamp forest is more diverse than in lowland forest. This difference may influenced by difference of seasons that related to tree phenology. If was found 22 foods species of bekantan in swamp forest and lowland forest, among them Genua motleyana, Syzygium leucoxylon, Neoscortechinia sp., Eugenia zeylanica and Crudia teysmanii. Bekantan prefer to consumed leaves than flowers and fruits.
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Judul: Synthesis of Molybdenum Trioxide (MoO3) by Electrochemical Method for Electrochromics Application
Abstrak: Molybdenum trioxide (MoO3) thin films have been deposited on glass substrates by electrochemical method using ammonium heptamolybdate tetrahydrate ((NH4)6Mo7O244H2O). The films were deposited onto glass substrates as the control temperature at 25○C and annealing treatment at 350○C for 30 mins. The MoO3 thin films were investigated by UV-Vis, X-ray diffraction techniques (XRD), Scanning Electron Microscopy (SEM). The JCPDS card show that orthorhombic MoO3 (α- phase) has been formed. Molybdenum trioxide MoO3 formation was also confirmed by JCPDS card no. 35-0609. The SEM photographs revealed that the spherical and rod-like morphology and their grains size increased with increasing of heating temperatures. The measurement results show that the MoO3 thin film prepared at 350°C transmited about 80% of the visible spectrum. The effect of different heat treatments on surface morphology, thickness and optical properties of the films are discussed in this thesis.
Keyword: Institut Pertanian Bogor, Bogor Agricultural University, IPB, Electrophoretics, electrodeposide, electrochromics, electrochromic materials, electrochromic mechanism