Judul: Studi Keragaman dan Kelimpahan Jenis Burung dan Mamalia pada Beberapa Areal Bekas Tebangan dan Hutan Primer di Areal HPH PT. Narkata Rimba, Kalimantan Timur
Abstrak: The subject of the study is to know the birds and mammals biodiversity on several locations on logged-over area, primary forest, relationship to habitat characteristic and microclimate. Study was conducted on 7, 5 year and 1 month logged-over area and primary forest. IPA method was used on bird inventory and transects for mammals in each location, line-plot was used on vegetation analysis and plot used for microclimate measurements which representative to 3-class canopy cover (75%, 50-75%, and GO%). A total of 146 identified species of birds and 27 species mammals was recorded all over location. A total of 359 of birds from 98 species (H'=4.155), and 106 of mammals from 6 species (H'=2.13) were recorded at Virgin Forest (HF). A total of 527 birds from 87 species (H1=4.087), and 99 of mammals from 22 species (H1=2.68) were recorded at 7 years logged-over area (H7). A total of 89 birds from 89 species (H'z4.074) and 139 of mammals that belongs to 20 species (H'=2.36) were recorded at 5 years logged-over area (H5). A total of 372 birds that belongs to 80 species (H'=3.796) and 100 of mammals from 14 species (H1=1.77) were recorded at 1 month logged-over area (Hl). The relationship between total of species, individual and index of diversity with the habitat characteristic using multiple regression indicated by coefficient of determination are 0.75, 0.82 and 0.72. Beside that, the index of diversity have a high relationship with microclimate that indicated by 0.97 of coefficient determination.
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Judul: Keanekaragaman jenis Burung pada beberapa tipe Habitat di Hutan Penelitian Dramaga, Bogor, Jawa Barat
Abstrak: Dramaga Research Forest, located in the outskirt of Bogor, provides a good habitat for birds. This research was aimed to study bird diversity, identifying habitat characteristics (around the forest path, along house edge, riparian habitat and the interior area) and recorded the activities of the local people around the forest. Point count, MacKinnon list, habitat profiling and interviews were conducted. Shannon-Wiener diversity indices and similarity level were calculated. The highest index of species diversity was in the interior area (2.34), followed by around the forest path (2.21), along house edge (1.97) and riparian habitat (1.86). The highest species richness, however, was in the riparian habitat (27 species), the forest path had 21 species, along house edge had 26 species, while the interior area was a home for 21 bird species. The highest similarity (0.81) was between forest path and interior area. On the activities of the local people, the most often was firewood harvesting. Other activities were hunting for cage birds, harvesting ferns, harvesting wild fruit and harvesting ant larvae. Activity that might disrupt the bird population was hunting.
Keyword: Bogor Agricultural University (IPB), Dramaga research forest, human activities, Bird diversity, Streptopelia chinensis, Orthotomus sepium

Judul: Katalis Zink Ferit Tersubstitusi Cu untuk Oksidasi Benzil Alkohol
Abstrak: Katalis berperan dalam menurunkan energi aktivasi. Katalis ZnFe2O4 dan ZnFe2O4 tersubstitusi Cu disintesis menggunakan metode kopresipitasi untuk digunakan dalam oksidasi benzil alkohol. Katalis dicirikan dengan spektrofotometer inframerah (FTIR) dan difraktometer sinar-X. Spektrum FTIR menunjukkan puncak serapan dari ikatan Zn-O dan Fe-O masing-masing pada rentang 559‒575 cm-1 dan 419‒447 cm-1. Difraktogram menunjukkan terbentuknya fase tunggal Zn0.6Cu0.4Fe2O4 pada katalis ZnFe2O4 tersubstitusi Cu 20%. Benzil alkohol dioksidasi dengan sistem refluks. Konversi benzil alkohol meningkat dengan meningkatnya suhu. Kadar benzaldehida yang dihasilkan dengan katalis ZnFe2O4 tersubstitusi Cu 20% lebih tinggi dibandingkan dengan katalis ZnFe2O4 yang tidak tersubstitusi dan yang tersubstitusi Cu 60 dan 80%. Hal tersebut menunjukkan bahwa katalis ZnFe2O4 tersubstitusi Cu 20% memiliki kinerja yang lebih baik dalam oksidasi benzil alkohol menjadi benzaldehida dengan kadar benzaldehida 8.763%.
Keyword: Benzil alkohol, katalis, oksidasi, ZnFe2O4