Judul: Populasi dan Habitat Monyet Ekor Panjang (Macaca fascicularis) di Kawasan Ekowisata Mangrove Wonorejo dan Sekitarnya, Surabaya
Abstrak: Long-tailed macaque is a diurnal nonhuman primate and can be found in various types of vegetation including mangrove forests to mountain forests. The purpose of this research is to identify the population and habitat of Longtailed macaque (Macaca fascicularis) in the Wonorejo Mangrove Ecotourism and surrounding areas, Surabaya. Method of observation population is concentration count and then method of habitat analysis is based on vegetation analysis. The minimum estimation of population size of Long-tailed macaque in the areas was 148 individuals. Sex-ratio of adult macaque was estimatied to be 1 : 2. Macaque population densities was 0,55 individuals/hectare. The Longtailed macaque’s eats are mangrove forest vegetations and animal. There was 9 kind of food, which 7 species of plants and the others species was animals. The macaque has highest tendency for using area in their daily life above the ground (40,54%) and only 29,73% individuals spend the day in bottom of the canopy.
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Judul: Studi Populasi dan Habitat Monyet Ekor Panjang (Macaca fascicularis) di Cagar Alam Pananjung Pangandaran Jawa Barat
Abstrak: Pananjung Pangandaran Nature Reserve is one of natural habitat for long-tailed macaque (Macaca fascicularis). This wildlife was listed as Least Concern status in IUCN (2013) and Appendix II in CITES. The result of the research, which was done in three observation tracks, showed a different density of long-tailed macaque. The greatest population density was found as Karang Pandan (22 ind/ha), while at second track (Tadah Angin) were 4 individuals/ha, and at the third track (Cikamal) there were 19 individuals/ha. The range of population at the first track as many as 22 ± 9 individuals, at the second track as many as 4 ± 2 individuals, and third track as many as 7 ± 4 individuals. The adult long-tailed macaque was found at most in this research. Sex ratio of long-tailed macaque at the first and third track was 1:4, and at the second track was 1:3. There were 48 plant species that were found in the area where the long-tailed macaque carried out their activity, and 22 of the species had potential for long-tailed macaque feed.
Keyword: population, Macaca fascicularis, habitat, density

Judul: Pembuatan Film Tipis Cu2ZnSnS4 sebagai Lapisan Penyerap Cahaya pada Sel Surya Menggunakan Metode Elektrodeposisi
Abstrak: Thin film of Cu2ZnSnS4 (CZTS) is an alternative semiconductor used as light absorber layer on solar cell. CZTS can replace silicon that commonly used as commercial semiconductor. The advantage of using CZTS as absorber layer is due to the abundance of its chemical composer on earth, and its high value of absorption coefficient. The absorber layer was made by using electrodeposition method on ITO glass substrates. The films were deposited at room temperature using potentiostatic mode with a potential of –1.05 V for 30, 45, and 60 minutes. After that, the films were annealed at two different temperatures, 180 ºC and 500 °C, for 45 minutes in N2/H2S atmosphere. Based on X-ray diffraction analysis, the polycrystalline thin film obtained fall into kesterite crystal phase. This type of crystal was obtained when the CZTS was annealed at 500 °C in H2S/N2 atmosphere. The value of optical band gap energy for the CZTS thin film was 2.2 eV with the film thickness about 1.228–6.366 μm. The sample of CZTS with electrodeposition time of 45 minutes and annealing temperature of 500 °C showed the best result and in conformity with absorber layers criteria for solar cells.
Keyword: semiconductor, ITO glass, CZTS thin film, electrodeposition