Judul: Diversity of Food Plants of Long-Tailed Macaque (Macaca fascicularis) On The Rainy Season In the Nature Park Pangandaran
Abstrak: Pakan monyet ekor panjang (Macaca fascicularis) di Taman Wisata Alam Pangandaran dapat diidentifikasi melalui studi remahan feses. Penelitian ini bertujuan mengidentifikasi pakan monyet ekor panjang pada musim hujan dengan waktu pengambilan sampel yang berbeda. Sampel feses dikoleksi oleh Dr. Yamato Tsuji secara kontinu pada musim hujan dari bulan September 2011 hingga Februari 2012. Sampel berupa remahan epidermis yang berasal dari feses monyet ekor panjang dibuat sediaan mikroskopis serta diidentifikasi berdasarkan pangkalan data pada penelitian sebelumnya. Hasil penelitian menunjukkan jenis pakan dominan monyet ekor panjang adalah tumbuhan Ficus. Tumbuhan Ficus yang menjadi pakan dominan tersebut adalah buah Ficus microcarpa, F. glomerata, F. annulata dan F. septica. serta daun F. benjamina, F. subulata, dan F. rervosa. Selain Ficus, dijumpai juga buah Decospermum fruticosum dan Leea indica sebagai pakan dominan monyet ekor panjang di TWA Pangandaran.
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, anatomical, fecal, Ficus, M.fascicularis, season, Anatomi, Identifikasi tumbuhan, Struktur anatomi tumbuhan

Judul: Diversity of Food-Plant of Long-Tailed Macaque (Macaca fascicularis) on the Dry Season in the Nature Park Pangandaran.
Abstrak: Pengamatan anatomi terhadap remahan sisa pakan yang terdapat dalam feses menjadi salah satu alternatif untuk mengetahui jenis tumbuhan sumber pakan yang dikonsumsi kelompok hewan khususnya primata tertentu baik semusim maupun berbagai musim. Penelitian ini bertujuan mengidentifikasi secara anatomi komposisi pakan dalam feses monyet ekor panjang (Macaca fascicularis) pada musim kemarau di Taman Wisata Alam Pangandaran, Jawa Barat. Sampel feses yang digunakan merupakan sampel awetan yang diambil pada musim kemarau yaitu pada bulan Agustus 2011 dan Maret-Juli 2012. Sampel berupa feses monyet ekor panjang yang berisi remahan epidermis. Remahan tersebut dibuat sediaan mikroskopis berupa sayatan paradermal. Karakter yang diamati pada sediaan mikroskopis adalah tipe, bentuk, kerapatan stomata dan trikoma. Proporsi remahan pakan dominan monyet ekor panjang pada penelitian ini yaitu daun beringin (Ficus benjamina), buah ipis kulit (Decospermum fruticosum), buah rukem (Flacourtia rukam), dan buah kondang (Ficus glomerata).
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, anatomy, fecal, Ficus, Macaca fascicularis, Pangandaran, Anatomi, Pemisahan remahan feses, Ficus pakan monyet

Judul: Resonance technique HHO generator for internal combustion engine
Abstrak: Application of HHO gas as fuel had been generaly used. Though there was still controversy regarding its efficiency and efectiveness . In this research, hydrogen that hopefully could become an alternative renewable energy was produced by the electrolysis process. HHO was the mixture of hydrogen gas and oxygen gas that was formed in HHO dry generator. In HHO cell (dry) generator contained 10 cells, and each cell required 2.4 voltage. Furthermore, resonance DC application was evaluated to gain the better electrolysis efficiency. The test was held by using 2 level of electrolyte consentration, 0.178 M KOH and 0.446 M KOH. Each concentration was tested by 3 size of inductors, 8uH, 40uH, and 100uH. Not only single frequency was used, but modulatedfrequency was used also as well. In order to measure the improvement of resonance techinique application, specific energy was compared between using resonance technique and conventionaltechnique.Specific energy was calculated between output (mass of hydrogen) and input energy (watt hour). In this test,input of specific energy was measured in two condition:energy from the source (total) and energy in HHO generator only. From the test, it could be concluded that modulated frequency, by using40 Hz and 2405 Hz frequency, 100uH inductor, and 0.446 M OH, only 61% of total specific energy that was used in HHO generator. It needed23.91 watt hour energy (total) to produce 1 gram of hydrogen gas.On the other hand, the worst performance was happened in single frequency, 11270Hz, 8uH of inductor, and 0.178 KOH, where the loss of specific energy was 82%. The conventional technique only loosed about 0.5% of specific energy in 0.178 KOH needed 51.37watt hour to provide one gram of hydrogen. The loss was happened due to the excess of current that was converted into head in MOSFET. Hopefully the further research will be held again by using wet type of HHO generator because dry generator did not have fixed capacity value and it maked difficulty for calculating the perfect resonance condition.
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