Judul: Spatial pattern analysis of public tin mining as a suggestion in determination of spatial arrangement policy in bangka district
Abstrak: Recently small scale tin mining (Inconventional Mining) is an alternative activity for some communities in Bangka District. The activity may create positive impact through providing high income, but incontrast, it may create negative impacts such as environmental degradation, social change, and spatial inapropriate utilization regarding its spatial planning and carrying capacity. The objectives of this research were : 1) To describe inconventional tin mining location in Bangka District, 2) To inform socio-economic community due to inconventional tin mining, 3) To know possibility of area utilization discrepancy due to inconventional tin mining, and 4) to provide suggestions to Bangka District Government in spatial arrangement policy in relation to inconventional tin mining activity. Generally, the research methods used GIS and description analysis. The spatial data base was derived from GIS analysis such as digitations, correction, and integration of spatial data and attribute. Analysis for inconventional mining location was conducted through overlay process, legal location mining status identification, total amount and SD value of quarry mining, mining distance category to subdistrict, and scoring. GIS analyses were implemented to identify the discrepancy of area utilization, inconventional mining distribution regarding with land use, and spatial utilization, and description analysis to community socio-economic condition.
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Judul: Reklamasi lahan pascatambang timah dan tingkat perkembangan wilayah di Kabupaten Bangka
Abstrak: Tin mining industry in Bangka Regency contributes positively to the national income, and increase in Gross Regional Domestic Product (GRDP), labour availability, and economic value. The tin mining also poses negative impacts on the environment. Post-mined reclamation is expected to increase regional economic level and stimulate economic growth so that after the closure of mining activities there is no inequality in the community socio-economic aspect. The aims of the research are: (1) to assess tin post-mined land reclamation techniques for plant growth, (2) to assess the types of reclamation plants suitable to grow and have an economic benefit to the community, (3) to determine priority of the reclamation plant types suitable to grow based on the stakeholders perceptions, (4) to plan an arrangement of plant types and land reclamation techniques in the tin post-mined area, and (5) to determine the level of the community income and regional development in villages with tin mining activities in Bangka Regency. The results show that the reclamation technique that can be implemented was by providing soil ameliorants (manure or compost, top soil and rock phosphate or dolomite) and fertilizers to the tailings, and then provide MAF inoculant or planting cover crops of the leguminoseae familiy and planted with native plants or plants which suitable to grow in the such a tin postmined land conditions. Implementation of the reclamation technique resulted in an increase in land suitability classes to be S3 (marginally suitable) for rubber (Hevea brasiliensis) and S2 (moderately suitable) for sengon (Paraserianthes falcataria) and acacia (Acacia auriculiformis). Based on the stakeholder perception, rubber is the priority plant, while plant which generate economic benefit is sengon. The community income of villages around the tin mining area increased in the period of 2003-2008. At the time of mining activities, hierarchy of some villages around the mine increased but then decreased after the closure of the tin mining activities.
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Judul: Karakteristik Emulsifier dari otak sapi yang diekstrak dengan menggunakan pelarut yangberbeda
Abstrak: Brain is an animal by-product which has the highest phospholipids a ~cdho lesterol content. Phospholipids in brain consist of a polar head (phosphate acid) and nonpolar tail (lipid). Therefore, phospholipids can be used as an emulsifier in emulsion products such as cosmetics and pharmaceutical.
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