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: 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