Judul: Development of gis-based decision support system for small island (a case study in ndana island, nusa tenggara timur)
Abstrak: Ndana Island in East Nusa Tenggara province is selected as the study area, because the island was classified as small island, located in the Australian border, and need a special management for achieving sustainable natural resources especially at marine area. The development of GIS-based DSS will be has some advantages for Ndana Island such as increasing and protecting the carrying capacity of border territory; using natural resources potencies with sustainable management; increasing income of local people; and developing an isolated island. The objectives of this research are to identify and analyze potencies of Ndana Island, to develop prototype of GIS-based Decision Support System as a tool for analysis of decision making and to propose potential solutions based on sustainable management of Ndana Island. There are four main activities to comply this research are data collection and preparation, database design and implementation, data analysis, and graphical user interface. The suitable area for coral reef conservation area in Ndana Island will be analyzed based on ecology, economic and social factors using GIS analysis. Results from this analysis are three zones in conservation area: core zone, buffer zone and use zone which core zone should be a closed area for development, accessible only for research activity. Buffer zone and use zone areas can be analyzed further for diving suitability. Result of this research is the suitable area for coral reef conservation in Ndana island are S1 (highly suitable) for core zone, S2 (moderately suitable) for buffer zone, S3 (marginally suitable) for use zone and N (not suitable) for non-conservation area. Percentage of S1 is 0.29%, S2 is 3.01%, S3 is 75.58% and N is 21.12%. In buffer and use zone of conservation area, there are 31.33 hectares is moderately suitable (S2) and 146.27 hectares is marginally suitable (S3) for diving suitability. Based on spatial suitability and economic valuation, scenario IV is the best management to apply in coral reef area of Ndana Island, which has the biggest value of NPV, Rp. 86,767,185,416. In scenario IV there are zonation area for tourism, fisheries and protected area with ecology, economic and social consideration. Hopefully this scenario can increase income of local people with sustainable management of natural resources. With this method can help improve coral reef conservation and management, but the level of detailed analysis required depend on the use of data and the value estimation. This research has been developed graphical user interface using Microsoft Visual Basic and MapObject that makes the system easy to understand, handle and use by the user means it can be helpful for the user.
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Judul: Development model for regional conservation of coastal and small islands: case study of Weda Bay.
Abstrak: A study on development model for regional conservation in the coastal and small islands of Weda Bay, Regency Central Halmahera, Province North Maluku was conducted from June to November 2012. The objectives of the study were 1) to assess and identify existing ecosystem and natural resources there in; 2) to analyze the suitability of conservation area for marine fisheries ecotourism; 3) to analyze assimilative capacity and carrying capacity for environmental utilization; and 4) to analyze structural institution model based on tourism demand, marine fisheries ecotourism, and the sustainability of coastal and small islands in Weda Bay. Analyses performed for this study were 1) toponymy analysis, based on species identification, diversity, and lifeform; 2) conservation criteria, suitability matrices, and spatial analysis; 3) assimilative thresholds and carrying capacity for environment and utilization; 4) Travel Cost Method (TCM), Interpretative Structural Modeling (ISM) and Rapfish. From this study, there are 28 uninhabited islands, 6 families of mangroves, 10 species of seagrass, 14 types of lifeform with dominant reef feature of fringing and barrier, while bottom feature consisted of slopes and drop offs. To accommodate both conservation and economic development, mangrove area should be developed for ecotourism purpose. Assimilative capacity in this study indicated that several chemical parameters were under threshold limits for mariculture, port, and tourism development. Carrying capacity for marine fisheries ecotourism indicated that dominant use should directed to mangrove tourism. Finally, development model for supporting increased tourist visits to study area should consider travel cost and tourist income according to country of origin. Institutional management for coastal and small islands should incorporate government, tourists and university, in order to promote sustainable development for tourism and natural resource production. For supporting local fish-based product, fisherman, and capture fishery capitalization, there should be regulation in setting market price, fishery resource management, regional investment regulation, and consistent applied policy. Optimal sustainability for development of coastal and small islands in Weda Bay is possible when improvements are applied to ecology, economy, socio-culture, and institutional dimension.
Keyword: assessment, identification, conservation, zonation, marine fisheries ecotourism, carrying capacity, interpretative structural model

Judul: Katalis Zink Ferit Tersubstitusi Cu untuk Oksidasi Benzil Alkohol
Abstrak: Katalis berperan dalam menurunkan energi aktivasi. Katalis ZnFe2O4 dan ZnFe2O4 tersubstitusi Cu disintesis menggunakan metode kopresipitasi untuk digunakan dalam oksidasi benzil alkohol. Katalis dicirikan dengan spektrofotometer inframerah (FTIR) dan difraktometer sinar-X. Spektrum FTIR menunjukkan puncak serapan dari ikatan Zn-O dan Fe-O masing-masing pada rentang 559‒575 cm-1 dan 419‒447 cm-1. Difraktogram menunjukkan terbentuknya fase tunggal Zn0.6Cu0.4Fe2O4 pada katalis ZnFe2O4 tersubstitusi Cu 20%. Benzil alkohol dioksidasi dengan sistem refluks. Konversi benzil alkohol meningkat dengan meningkatnya suhu. Kadar benzaldehida yang dihasilkan dengan katalis ZnFe2O4 tersubstitusi Cu 20% lebih tinggi dibandingkan dengan katalis ZnFe2O4 yang tidak tersubstitusi dan yang tersubstitusi Cu 60 dan 80%. Hal tersebut menunjukkan bahwa katalis ZnFe2O4 tersubstitusi Cu 20% memiliki kinerja yang lebih baik dalam oksidasi benzil alkohol menjadi benzaldehida dengan kadar benzaldehida 8.763%.
Keyword: Benzil alkohol, katalis, oksidasi, ZnFe2O4