Judul: Studi Keanekaragaman dan Penyebaran Spasial Palem-Paleman (Arecaceae) di Hutan Lindung Gunung Slamet, Baturaden – Provinsi Jawa Tengah
Abstrak: Palm is one of interesting plant. It has been used for several needs and also a trading commodity. One of palms habitat is in Protected Forest of Mount Slamet. The threat of land conversion and forest fires is a problem in this area. The lack of information on the diversity, abundance and the distribution of palms make this area vulnerable and increated the possibility of unknown palms to go extinct. The purpose of the research is to describe the composition, diversity and the ecological distribution of palms and also analyzing the distribution of palms based on land and altitude. Research was conducted on May until June 2012, on two type of ecosystems natural forest and mix forest at Protected Forests of Mount Slamet. Data were collected using vegetation analysis method. Data of the palms were analyzed to obtain value of diversity, evenness and abundance of species. Spatial distribution Data were obtained from recording palms position. Thematic map of land and altitude was developed on processing the landsat map and divided them to different classes. Then, it was overlayed with palms point of occurence to produce a map of palms distribution based on land and altitude. Composition of palms on Protected Forests of Mount Slamet, on natural forest ecosystem found 12 species, and on mix forest ecosystem found 6 species. Distribution pattern of palms is clumped. The higest diversity of palms occurs on natural forest at 1.200 mdpl-1.300 mdpl with elevation 8-15 %, and mix forest at 900-1.000 mdpl with elevation 8-15%.
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Judul: Keanekaragaman Tumbuhan Berguna di Hutan Lindung Gunung Slamet RPH Baturraden, BKPH Gunung Slamet Barat, KPH Banyumas Timur
Abstrak: Protected forest was a forest that had main function as a protective life support system, to managed hydrology system, prevent flooding and erosion, reduce sea water intrusion, and maintained soil fertility. This study aimed to determined the diversity of usefulness plants in protected forests of Slamet Mount RPH Baturraden, BKPH Gunung Slamet Barat, KPH Banyumas Timur. The results of the analysis of vegetation found as many as 130 plant species belonging to 63 families. The most families that found were Euphorbiaceae and habitus were mostly the tree. There were 97% of plants that have the potential for useful plants or as many as 126 species. Potential uses include as food-producing plants, medicinal plants, plants producing construction materials, plants producing rope, webbing, and handicrafts, ornamental plants, plants producing animal feed, plants producer of color, wood-producing plants, plants producing beverages, pesticide-producing plant, plants for traditional rituals and religious purposes, and producing aromatic plants, as well as other uses.
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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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