Judul: Aktivitas harian dan wilayah jelajah Lutung Jawa (Trachypithecus auratus Raffles 1821) di Resort Bama Taman Nasional Baluran
Abstrak: Baluran National Park particuralry Bama Resort is one of Javan Ebony leaf monkey (T.auratus Raffles 1821) habitat. This research purposes were to study daily behavior and homerange of Ebony leaf monkey group. The observation was conducted using Focal animal sampling method, the observation target is the activity of each Ebony leaf monkey group recorded continuously. Homerange was recorded by tracking and following the Ebony leaf monkey group while mapped using GPS (Global Positioning System). The average active time between two groups was around 12 hours 12 minutes, activity percentage from highest to lowest were 40% of feeding activity, 26% of moving activity, 22% of resting activity, and 12% of social activity. Average homerange from group I was 7,46 ha and group II is 13,15 ha. Main foods for Ebony leaf monkey were contains of Asam Jawa, Kesambi, Mimbo, Pilang, Kepuh, Walikukun, Akasia, and Jerukan
Keyword: Bogor Agricultural University (IPB), homerange, ebony leaf monkey, daily behavior

Judul: Pemodelan Spasial Kesesuaian Habitat Lutung Jawa (Trachypithecus auratus Geoffroy, 1812) di Resort Rowobendo Taman Nasional Alas Purwo
Abstrak: One of the Ebony leaf monkey habitat is Rowobendo Resort in Alas Purwo National Park. The research objectives are mapping habitat suitability, to identifying factors which highly influence habitat suitability and to determining area of Ebony leaf monkey habitat suitability. Ebony leaf monkey habitat suitability mapping was initiated by collection data, such as digital map, data survey and literature. This mapping was based on some habitat variables, namely NDVI, altitude, slope, distance from road, distance from river, and distance from village. The value from each points then being analyzed by using principal component analysis (PCA) to get the weight of each variable. Habitat suitability model of ebony leaf monkey was Y = (1.189*FkNDVI) + (2.546*Fkaltitude) + (1.058*Fkslope) + (1.058*Fkriver) + (2.546*Fkroad) + (2.546*Fkvillage). The habitat suitability map were reclassified into three suitability classes. The result showed that there were 953.60 ha of low habitat suitability, 1899.35 ha of medium habitat suitability, 859.43 ha of high habitat suitability. The habitat suitability map could be accepted by showing the validation about 87,10%.
Keyword: spatial modelling, habitat suitability, ebony leaf monkey

Judul: Sintesis nanopartikel Cu2ZnSnS4 menggunakan teknik hidrotermal
Abstrak: Nanopartikel Cu2ZnSnS4 (CZTS) merupakan semikonduktor yang berpotensi sebagai fotokatalis untuk reaksi fotodegradasi zat pewarna. Semikonduktor ini memiliki sela pita yang jauh lebih kecil dibandingkan dengan semikonduktor TiO2, sehingga memungkinkan dapat berkerja hanya dengan paparan sinar matahari. Nanopartikel Cu2ZnSnS4 telah berhasil disintesis menggunakan teknik hidrotermal dengan suhu 200 oC selama 24 jam. Larutan Cu2ZnSnS4 dinetralkan menggunakan amonium hidroksida dan dialiri gas N2 sebelum proses hidrotermal. Hasil analisis mikroskop elektron pemayaran menunjukkan nanopartikel Cu2ZnSnS4 mengalami aglomerasi karena memiliki ukuran partikel yang besar. Hasil analisis difraktogram sinar-X menunjukkan bahwa Cu2ZnSnS4 yang dihasilkan memiliki struktur kesterit dengan senyawa fase sekunder yang terbentuk adalah CuS, ZnS, dan Cu2SnS3. Hasil uji fotodegradasi menunjukkan bahwa senyawa hasil sintesis memiliki kemampuan degradasi dibawah sinar matahari lebih baik dibandingkan dengan TiO2. Namun, pada paparan sinar UV, TiO2 mendegradasi biru metilena lebih baik daripada senyawa hasil sintesis. Kapasitas adsorbsi terhadap biru metilena sebesar 2.6780 mg/g menunjukkan bahwa senyawa hasil sintesis tidak mampu mengadsorpsi dengan baik, sehingga disimpulkan bahwa hilangnya biru metilena dari larutan disebabkan oleh fotodegradasi, bukan oleh adsorpsi
Keyword: band gap, Cu2ZnSnS4, kesterite, photocatalyst, semiconductor