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: Parameter Demografi dan Penggunaan Ruang Vertikal Lutung Jawa (Trachypithecus auratus Geoffroy 1812) di Resort Tamanjaya Taman Nasional Ujung Kulon
Abstrak: Demography parameter of ebony leaf monkey at Tamanjaya Resort of Ujung Kulon National Park wasn’t knew. Demography parameter was important component to the studied of population. The purposed of this study was to estimated demography parameter and indentification of used spatial vertical. The method used of demography parameter was consentration count method. The continuous recording method used for the analysis of the used of space, and method used in the analysis vegetation was plot method. Result of the study showed there were 17 individual of 3 grups, with composision 5 childerns, 4 juvenliles, 3 adult males and 5 adult females. Sex ratio from 3 groups were 1:1.6. Birthrate were 0.29. The highest mortality occured from juvenile to adult was 0.66. Ebony leaf monkey in Tamanjaya Resort used B and C level.
Keyword: Bogor Agricultural University (IPB), Demography parameter, ebony leaf monkey, use spatial vertical, Conservation count

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