Judul: Pengaruh faktor lingkungan terhadap durasi perilaku harian bekantan di PT Indexim Utama, Kalimantan Tengah
Abstrak: Existence of Proboscis monkey (Nasalis larvatus) as an endangered species in a forest production area becomes an important issue due to the balance of species conservation effort and the exploitation aspect of the area management. The knowledge of environmental factors influence on the daily behavior duration of proboscis monkey which are ingestive, rest, and locomotive behavior is needed to identify the significant factors to the life of proboscis monkey. The duration of ingestive behavior is significantly influenced by the diameter of Shorea sp, Heritiera sp, Falcataria moluccana, and Dryobalanops spp. The duration of rest behavior is significantly influenced by the diameter of Shorea sp and Ficus gibbosa. The duration of locomotive behavior significantly influenced by Elateriospermum tapos and Pterospermum javanica. Time allocation for ingestive, rest, and locomotive behavior are directly proportional to the diameter of the influencing tree species.
Keyword: Bogor Agricultural University (IPB), Kalimantan Tengah, PT Indexim Utama, Daily behavior, Proboscis monkey

Judul: Daily Behavior and Feeding Behavior of Long-tailed Macaques (Macaca fascicularis) in Muara Angke Wildlife Reserve, North Jakarta
Abstrak: Monyet ekor panjang (Macaca fascicularis) merupakan salah satu spesies primata yang mudah beradaptasi dengan perubahan lingkungan sehingga penyebarannya sangat luas. Kebiasaan manusia memberikan makanan dapat mempengaruhi perilaku hariannya dan perbedaan proporsi pakan non alami dibandingkan pakan alaminya. Penelitian ini dilaksanakan pada bulan Januari 2016 sampai dengan Mei 2016 di Suaka Margasatwa Muara Angke, Jakarta Utara. Penelitian ini bertujuan mengkaji perilaku harian berdasarkan waktu dan kelas umur, mengkaji perilaku makan, dan menganalisis proporsi pakan. Pengamatan dilakukan pada kelompok mata satu yang beranggotakan 19 individu. Habituasi, identifikasi kelompok dan individu dilakukan selama 150 jam pengamatan. Pengamatan perilaku harian menggunakan metode ad libitum sampling selama 84 jam pengamatan. Pengamatan perilaku makan menggunakan metode focal animal sampling selama 70 jam pengamatan. Perilaku bergerak (44,71%) dominan pada pagi hari, perilaku istirahat (17,68%) dominan pada siang hari, dan perilaku makan (28,32%) dominan pada sore hari. Perilaku bergerak (48,47%) dan bermain (30,92%) dominan pada anak-anak, perilaku makan (31,55%) dominan pada remaja, perilaku istirahat (28,04%) dan menelisik (17,02%) dominan pada dewasa. Pengamatan perilaku makan dikelompokkan menjadi perilaku mencari, memilih, menggigit, mengunyah, dan menolak. Perilaku makan didominasi mengunyah (40,31%) dengan rerata durasi 17,07 menit. Durasi makan monyet remaja (35,02 menit) lebih lama dibandingkan durasi makan monyet dewasa (29,51 menit). Monyet ini memanfaatkan proporsi pakan alami (63,55%) lebih tinggi dibandingkan pakan non alami (36,45%). Pakan alami didominasi daun (27,11%) dan buah (25,55%). Pakan non alami didominasi kacang (29,54%) dan pisang (19,57%). Aspek iklim mempengaruhi perilaku harian monyet kelompok mata satu.
Keyword: Institut Pertanian Bogor, Bogor Agricultural University, IPB, mangrove, M. fascicularis, pakan, perilaku makan, Perilaku makan, Pakan, Habituasi, Identifikasi kelompok, Individu, Identifikasi jenis pakan

Judul: Characterizations of low alloy steel sae 4422  plated with chromic acid (Cro3)
Abstrak: Characterizations of low alloy steel SAE 4422 plated with chromic acid (CrOrO3) was use Optical Microscopy (OM), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), RD),Energy Dispersive Analysis of X-Ray (EDAX), Hardness Test and Roughness Test. Microstructures analysis exhibits cracks and grain boundaries microcracks as a characteristics of chrome metal found at plating metal. Perlite and Ferrite as grains of steel found at base metal with grain boundaries around it. Phase analysis of plating metal appropriate to chrome metal with lattice constant (a) is 2.559 Å and phase analysis of base metal appropriate to iron ferrite with lattice constant (a) is 3.318 Å. Both plating and base metal have cubic system. Chemical analysis of plating metal at surface section exhibits that cracks area have highest value of carbon element compare with grains and grains boundaries area. While chemical analysis of base metal at cross section exhibits that perlite have highest value of carbon element compare with ferrite and grain boundaries. The hardness value of plating metal at surface section and cross section are 753 and 637 VHN. While, the hardness value of base metal and interface area at cross section are 205 and 373 VHN. The roughness value at measurement points of chrome surface for as received sample are 0.445 μm. Observation used Optical Microscopy and Scanning Electron Microscopy exhibits surface irregularities combine to form surface texture of plating metal at surface section.
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