Judul: Analisis gap kebijakan pengelolan kawasan suaka margasatwa : Kasus di SM Balairaja, Bengkalis, Riau
Abstrak: Conservation area represents pillar of ecosystem stabilization that gives various protections for ecology processes and a lot of species varieties, as treasure for future that the benefit is still unknown. By now, the big potency that is had by conservation area faces serious threats therefore the area management becomes an urgent agenda. The research objective is to identify and evaluate management policy of SM Balairaja area, also formulate and give policies alternative recommendation of SM Balairaja management. The research was located in Mandau District of Bengkalis Regency at five of study villages: Pematang Pudu, Balairaja, Petani, Pinggir and Tengganau during March until September 2004. Data sources were taken by direct observation and result from researches that were part of “Baseline Study on Balairaja Conservation Area, Riau” supported by PPLH-IPB and PT Caltex Pacific Indonesia. The variety, richness and threat that were faced by vegetation and wild animal described descriptively, social culture activities were identified by FGD method (Focus Discussion Group) and deep interview, then policy alternative used AHP method (Analytical Hierarchy Process). Result showed the variety and richness rare of vegetation and wild animal in SM Balairaja area happened because of government compilation through contradictive codes, also the destructiveness activities involvement of economic social without strict law enforcement since area had been specified as wilderness area. AHP result gave the main policy of priority alternative in area management that was taken by Non government. The focus of program be on society management by management priority on social culture factor. Priority scale that was chosen showing un sensitive to preferences change of PHKA, BKSDA, PT.CPI, LSM, and Society. Beside that, research showed the stakeholders perception was different with the exist codes.
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Judul: Detennining the boundary of Edge and Core Area of Remnant Forest in Balai Raja Wildlife Sanctuary, Riau Province
Abstrak: Over the period 1985 to 2004, forest land cover in Balai Raja Wildlife Sanctuary reduced from 13,705.19 hectares to 705.85 hectares of fragmented forest. The reduction was attributed to illegal logging, mining, agriculture, oil palm plantation and settlement. In spite of the large loss, the remnant fragmented forest still serves a very important purpose, it is the last habitat for the Sumatran wildlife, however, there is no little or no infonnation on the characteristics of this forest, such as, the diversity of plant, indicator species and stand structure of forest edge. This study was designed to fill the knowledge gap, specifically, to detennine boundaries, diversity, stand structure of forest edge which is essential as a basis of infonnation in managing this area. Through field visits, seedlings, sapling poles, and trees species were identified and inventoried. The data were then used to carry out Bray Curtis analysis. Results show that the boundaries of forest edge range from 20-80 meters. Species of macaranga, mallotus and aporosa were identified as the indicator species. The dominant species in sequence for seedling, sapling, pole and tree were Alphitonia incana, Mischocarpus sundaicus, Macaranga gigantean and Shorea canina.
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Judul: Characterization of CoCrMo alloy with titanium nitride and hydroxyapatite-chitosan coating
Abstrak: Endoprosthetic is moving tool for implant in the body, made of metals or polymers. Stainless steel, Co-based alloys, and Ti materials are widely used for implant materials. Co alloy used is CoCrMo which has excellent properties such as good biocompatibility, corrosion resistant, good mechanical properties such as hardness, strength, and high wear resistance, supporting its utilization as an implant material. CoCrMo alloy was synthesized using tri arc furnace with heating temperature of 3000 °C. TiN coating using plasma sputtering and nitriding method, characterized by a layer of gold. The content of Ti in the layer was 3.85% (w/w), whereas the content N was difficult to determine. Hydroxyapatite (HAp) was synthesized using wet method with Ca source of chicken eggshell and P source of H3PO4 80%. HAp-chitosan composite coating aimed at improving the biocompatibility and corrosion resistance of CoCrMo. In vitro test showed that CoCrMo with TiN and HAp-chitosan coating had excellent corrosion resistance in liquid medium infusion, whereas samples HAp and CoCrMo with TiN coatings and HAp-chitosan had high level of toxicity in endothelial cell culture tests.
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