Judul: Karakteristik Habitat Preferensial Tarsius (Tarsius tarsier) di Taman Nasional Bantimurung Bulusaraung, Maros, Sulawesi Selatan
Abstrak: Tarsius tarsier was reported to occur throughout the island of Sulawesi and several small adjacent islands around it. For effective conservation, a detailed knowledge of the habitat requirements and preferences of the species concerned is needed. The presence of tarsier population and its habitat characteristics in Bantimurung Bulusaraung National Park are not clearly known. The habitat quality and space have been decreasing due to the increasing of human activities. This study that was carried out in Pattunuang Resort from Desember 2009 to Pebruari 2010, aimed to analyze the relationship between the existence of tarsier and its habitat characteristics, and to determine habitat preferences of tarsiers in the study area. The results showed that the tarsier was found on flat to steep topography with slope gradient reached 38%. The densities of plants at various of structure vegetation were higher in Blok Pute. Plant diversity was generally significantly different in each location. The abundance of insect species richness was highest in Blok Pattunuang among other location with pattern distribution were clumped. Based on the index of Neu, Tarsius tarsier preferred bamboo habitats to the secondary forest and karst vegetation to maintain their viability in this area.
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Judul: Model Kesesuaian Habitat Tarsius (Tarsius Sp.) Di Hutan Lambusango Pulau Buton Provinsi Sulawesi Tenggara
Abstrak: Tarsius (Tarsius spp.) adalah salah satu primata endemik Pulau Sulawesi yang juga tersebar di pulau-pulau sekitarnya. Hingga saat ini, terdapat lebih dari 16 populasi tarsius tersebar di Sulawesi dan dapat digolongkan menjadi spesies berbeda namun, hanya 9 spesies yang telah teridentifikasi. Hutan Lambusango adalah salah satu lokasi penyebaran tarsius di Pulau Buton. Lokasi ini merupakan hutan hujan dataran rendah tropis dengan gangguan antropogenis yang cukup tinggi terutama berasal dari tambang-tambang yang berada di sekitar kawasan hutan. Penelitian ini bertujuan untuk (1) mengidentifikasi karakteristik habitat tarsius di Hutan Lambusango, (2) menganalisis hubungan antara komponen habitat dan keberadaan tarsius di Hutan Lambusango dengan menggunakan GIS, dan (3) menduga luas habitat yang dapat mendukung populasi tarsius di Hutan Lambusango dengan menggunakan GIS. Penelitian dilaksanakan di dalam Hutan Lambusango yang terdiri atas Cagar Alam Kakinauwe dan Suaka Margasatwa Lambusango. Pengambilan data lapangan dilakukan pada bulan Juni-Agustus 2014. Data yang dikumpulkan antara lain adalah lokasi tidur tarsius, kondisi fisik habitat, kondisi vegetasi dan potensi pakan di setiap lokasi tidur. Setiap lokasi tidur yang ditemukan ditandai dengan menggunakan GPS. Pengumpulan data kondisi vegetasi menggunakan metode analisis vegetasi. Sedangkan untuk pengambilan data serangga dilakukan dengan metode perangkap cahaya (light trap) selanjutnya diidentifikasi di Laboratorium Taksonomi Serangga, Departemen Proteksi Tanaman, Fakultas Pertanian, Institut Pertanian Bogor. Analisis data dengan menggunakan Principal Component Analysis (PCA) untuk mengetahui bobot dari masing-masing variabel habitat sehingga dapat diketahui variabel habitat mana yang paling berpengaruh pada penyebaran tarsius. Hasil dari analisis PCA tersebut kemudian dianalisis secara spasial menggunakan GIS. Sebanyak 42 lokasi tidur tarsius teridentifikasi di Hutan Lambusango dan pada umumnya menempati wilayah perbatasan hutan. Jenis-jenis sarang yang teridentifikasi diantaranya adalah pohon Ficus spp., lubang-lubang batu, semak-semak yang dikelilingi liana, rumpun pandan, pohon tumbang yang diselimuti liana dan pohon wola (Vitex cofassus). Berdasarkan analisis PCA, terdapat total 7 variabel habitat yang memengaruhi kehadiran tarsius diantaranya adalah, nilai jarak dari batas hutan, jarak dari jalan, ketinggian, arah kelerengan, NDVI, FCD, dan keanekaragaman serangga. Luas Hutan Lambusango yang sesuai untuk habitat tarsius adalah 31 520 ha atau 82.96% yang terdiri dari 19.75% (24 017.70 ha) yang memiliki kelas kesesuaian sedang dan 63.21% (7 502.79 ha) yang berada pada kelas kesesuaian tinggi.
Keyword: Hutan Lambusango, kesesuaian habitat, tarsius

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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