Judul: Modeling of the Habitat Suitability of Dare Monkey (Macaca maura) in Bantimurung Bulusaraung National Park, South Sulawesi
Abstrak: Pulau Sulawesi merupakan pusat wilayah Wallacea yang memiliki keanekaragaman hayati tinggi dan dihuni oleh beberapa spesies tumbuhan dan hewan endemik baik flora maupun fauna, salah satunya satwa primata monyet dare (Macaca maura). Penelitian ini bertujuan untuk menganalisis kesesuaian habitat dan pengaruh variabel lingkungan terhadap habitat monyet dare di kawasan Taman Nasional Bantimurung Bulusaraung. Penelitian ini dilakukan dengan membangun model pendekatan distribusi spesies menggunakan Maxent ver. 3.4.4. yang dapat membantu melakukan analisis model kesesuaian habitat dalam skala luas dengan cara mengolah data kehadiran spesies dan variabel lingkungan yang diduga memengaruhi kehadiran spesies. Hasil pengolahan data dalam membangun model kesesuaian habitat untuk monyet dare, didapatkan data kehadiran spesies sebanyak 191 titik. Variabel lingkungan yang digunakan berupa tutupan lahan, ketinggian, kelerengan, suhu, jarak dari sungai, jarak dari jalan, dan jarak dari areal pertanian. Hasil analisis jackknife pada variabel yang berpengaruh terhadap hasil model menunjukkan bahwa variabel yang berkontribusi tinggi adalah variabel tutupan lahan (Bio_5) kemudian diikuti jarak dari jalan (Bio_1), jarak dari sungai (Bio_2) dan jarak dari areal pertanian (Bio_4). Besaran persentase kontribusi variabel lingkungan terhadap keberadaan monyet dare yakni tutupan lahan (36%), jarak dari jalan (33,3%), jarak dari sungai (11,5%), jarak dari areal pertanian (10,4%), kelerengan (5,3%), dan ketinggian (3,5%). Nilai AUC model kesesuaian habitat monyet dare sebesar 0,887 dengan standar deviasi ±0,019, merupakan model prediksi yang layak (reasonable predictions) dengan luas areal habitat yang sesuai 247,34 km2 (36,5%) dan yang tidak sesuai 429,52 km2 (63,5%). Luas areal habitat yang sesuai terbagi atas 3 yakni kelas kesesuaian rendah 113,13 km2 (46%), kelas kesesuaian sedang 81,8 km2 (33%) dan kelas kesesuaian tinggi 52,41 km2 (21%). Rendahnya luas areal habitat yang sesuai dibanding habitat yang tidak sesuai, serta besarnya luas areal kesesuaian rendah dibanding sedang dan tinggi, dapat menggambarkan bahwa ancaman dari keberadaan monyet dare masih tergolong tinggi.
Keyword: Dare Monkey, environmental variables, habitat suitability, Maxent, species presence

Judul: Habitat spatial modelling of black crested macaque (Macaca nigra Desmarest, 1822).
Abstrak: Black crested macaques (Macaca nigra Desmarest, 1822) have small geographic distribution. They naturally only can be found on Northern peninsula of Sulawesi and introduced in Bacan island, Moluccas as introduction species. Their remaining habitat on Sulawesi are limited only in conservation areas such as Tangkoko Nature Reserve, Duasudara Nature Reserve, Batuputih Natural Tourism Park, and Batuangus Natural Tourism Park in Bitung district North Sulawesi. Related to that restricted habitat, study in habitat of black crested macaques using Geographic Information System (GIS) application is urgently needed to get suitable habitat model for black crested macaques. Data observation for model simulation were conducted at Tangkoko Nature Reserve and Batuputih Natural Tourism Park. The model then extrapolated to Tangkoko Nature Reserve, Duasudara Nature Reserve, Batuputih Natural Tourism Park, and Batuangus Natural Tourism Park. Modelling of black crested macaque’s habitat was held by spatial identification of black crested macaque encounter points toward habitat and disturbance factors. Altitude, slope, NDVI (Normalization Difference Vegetation Index), and distance from river represent habitat factor. Distance from road, and distance from building represent disturbance factors. Weighting were conducted by using determined used Principle Component Analysis (PCA) and classifying were conducted by using overlay.
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Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4