Judul: Pemodelan Spasial Kesesuaian Habitat Lutung Jawa (Trachypithecus auratus Geoffroy, 1812) di Resort Rowobendo Taman Nasional Alas Purwo
Abstrak: One of the Ebony leaf monkey habitat is Rowobendo Resort in Alas Purwo National Park. The research objectives are mapping habitat suitability, to identifying factors which highly influence habitat suitability and to determining area of Ebony leaf monkey habitat suitability. Ebony leaf monkey habitat suitability mapping was initiated by collection data, such as digital map, data survey and literature. This mapping was based on some habitat variables, namely NDVI, altitude, slope, distance from road, distance from river, and distance from village. The value from each points then being analyzed by using principal component analysis (PCA) to get the weight of each variable. Habitat suitability model of ebony leaf monkey was Y = (1.189*FkNDVI) + (2.546*Fkaltitude) + (1.058*Fkslope) + (1.058*Fkriver) + (2.546*Fkroad) + (2.546*Fkvillage). The habitat suitability map were reclassified into three suitability classes. The result showed that there were 953.60 ha of low habitat suitability, 1899.35 ha of medium habitat suitability, 859.43 ha of high habitat suitability. The habitat suitability map could be accepted by showing the validation about 87,10%.
Keyword: spatial modelling, habitat suitability, ebony leaf monkey

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: 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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