Judul: Habitat, populasi, dan sebaran kukang jawa (Nycticebus javanicus geoffroy 1812) di Talun Tasikmalaya dan Ciamis, Jawa Barat
Abstrak: Javan slow loris is an endangered primate that naturely inhabits in some agroforestry garden namely talun in West Java. This study aimed to determine habitat preferences and to estimate population number. Data collection was conducted during April-December 2008 in four villages in Tasikmalaya District and one village in Ciamis District. The methods used to collect vegetation data were belt transect and nested plot, and method to collect javan slow loris densities was line transects. In total ten observed-belt transects showed that habitat preferences of javan slow loris was talun at two main phases: II (talun kebun or more opened vegetation) and III (talun sempurna or closely secondary forest structure). Dominant vegetation in talun habitat indicated by Important Value Index (IVI) proofed to played role as javan slow loris's food source, sleeping site, and habitat of prey and gave benefits the owner of talun for their financial investment. The greatest IVI of vegetation in the sites are Gigantochloa sp., Paraserianthes falcataria (L) I. C. Nielsen, and Arenga pinnata Merr. Ten line transects were used during day and night, therefore the population estimate in each village was 93.67 individuals at Sukamaju which has 4.43 km2 of habitat representative area, 173.79 individuals at Raksajaya (3.23 km2), 119.78 individuals at Kawungsari (6.96 km2), 58.83 individuals at Sarimanggu (3.48 km2), and 20.45 individuals at Sukakerta (1.39 km2). Javan slow loris tends to adapt to the condition of talun habitat, as a result their distributions abundance in range between 220-985 m height above sea level.
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Judul: Daerah jelajah dan penggunaan ruang Kukang Jawa (Nycticebus javanicus) di Taman Nasional Gunung Halimun Salak Jawa Barat
Abstrak: The Javan slow loris (Nycticebus javanicus) is a slow moving nocturnal prosimian primate. Javan slow lorises are considered Critically Endangered by the International Union for the Conservation of Nature (IUCN 2013), as well as being listed in Appendix I of Convention on International Trade in Endangered Species (2007). To date, there is limited source information available regarding wild loris ecology and behavior. In this study, home range areas and use space of wild javan slow loris was carried out in Mount Halimun-Salak National Park, in Bogor, West Java, Indonesia. This study aims to measure home range size and to analyze activity budgets in natural forest conditions. Kernel Home range methods were used to analyze home range areas, while Point Centered Quarter methods were used to collect habitat data, and five minute Instantaneous-Focal Animal Sampling was used to observe and record behavioral data. The observed lorises were two adult females, one of which (Individual I) was pregnant. Analysis showed contiguous home range sizes of 5.43 hectares and 5.58 hectares for Individuals I and II respectively, as well as a core home range area of 1.77 hectares and 1.60 hectares. These home ranges were larger than that reported in Malaysian Nycticebus coucang. Behavioral analysis showed that daily activities were dominated by travel, feeding, active, and foraging, which took place primarily in the lower canopy stratum (2 – 15 m), whereas sleeping typically occurred in the medium canopy stratum height (15 – 22 m). The use of space of javan slow loris correlated with height, substrat, contact, and size of branch. Javan slow loris preferred heights positions (5 – 7 m), and the size of a small twig branch categories. Javan slow loris preferred to use kaliandra (Calliandra calothyrsus), bungbuai (Plectomia elongata), and kisampang (Evodia latifolia) as foraging site and sleeping tree.
Keyword: Bogor Agricultural University (IPB), lower canopy, kernel home range, sleeping tree, Core area

Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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