Judul: Analisis Perubahan Penggunaan Lahan Pada Berbagai Kelas Kemampuan Lahan Dan Keterkaitannya Dengan Aksesibilitas Menuju Pusat-Pusat Pertumbuhan (Studi Kasus Sub DAS Ciliwung Hulu, Kawasan Puncak-Bogor)
Abstrak: Along with Depok, Tangerang, Bekasi (DETABEK), Regency and Municipality of Bogor are located near Jakarta (for about 60 km), hence are influenced economically from Jakarta's growth. It implies that BODETABEK serves as Jakarta's suburban and is known widely as the buffer. These areas are reserved to accept overflows of investment on economic development of Jakarta. The areas are supported by their contiguous spatial setup with enhanced access such as primary road networks and highways. This amenity is shown by duration of travel between Bogor and Jakalia which takes less than 1 hour and therefore attracts people who takes jobs in Jakarta to reside in Bogor. Results of remotely -sensed image classification indicate that the biggest conversion occurs in paddy field areas which decreases to 13,72 % and forested areas which decreases to 43,2 % from previous state (year 1991 - 2001). Urbanized areas rise up to 14,66 %. Classification of land capability shows that Class VI acreage is about 441,43 Ha. It is shown that most ofland utilizations are used inappropriately in comparasion to their actual capabilities. Employing Hayashi 2 (Axis 1) and Multinomial Logit, we find similar results between both of them. Andisols; Climate of III C; Slope class of 8 - 15 %; and the second grade of land capability is the most influencing factors. Instead we also find inconsistencies of the results from both. Distance to nearest roads and its growth centers is the most influencing factor to land use change. On analysis of Hayashi 2 (Axis 3) and Multinomial Logit, we find that the most influenced factor is land capability and distance nearest roads and to growth centers . Scatterplot was employed to illustrate patterns between land use changes, III particular for the conversion patterns of the Forest-Upland Field, ForestSettlement, Forest-Paddy Field, Paddy Field-Upland Field, and Upland FieldSettlement and their relations to four types of distance setup: to nearest roads, to Bogor CBD, to Jakarta CBD, and Cipanas CBD. There are no such patterns observed in this research. Further, conversions, are indicated to all areas regardless of the distance to both growth centers or road networks.
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Judul: Penggunaan/Penutupan Lahan dan Kaitannya dengan Pertumbuhan Ekonomi Wilayah (Studi Kasus Kota Bogor)
Abstrak: Rapid population growth will implied the need for space to accommodate their activity. And one of it manifested in the shape of built up area. On this land then this population do their activity, individually or in a group. The aims of this study were namely, to analyzes changes in land use/land cover of Bogor Municipality between 2005 and 2007, to analyzes the influence of economic factor to the land use/land cover compositions, and to analyzes the consistency between land use of the Bogor Municipality in 2007 and Regional Spatial Plan (RTRW). In 2005, Bogor Municipality land use/land cover was dominated by settlement with 31,1% (3.563,01 Ha), followed by paddy with 23,2 % (2.656,07 Ha) and urban forest with 13,9% (1.592,75 Ha). There were no change in the land use/land cover domination in 2007. Settlement still dominating Bogor Municipality land use/land cover with a little increase, which is 31,3% (3583,98 Ha). Paddy with the same percentage, which is 23,2% (2658,88 Ha) on second place and urban forest with 13.9% (1592,79 Ha) in third place. Between 2005 and 2007, there were 109,14 Ha land use/land cover change that occurs in Bogor Municipality. The transformation from non used space became a residential is the most dominating transformation, which reach 45 Ha. Followed by the transformation from field became a residential with 21,75 Ha and the transformation from non used space became fields is on the third place with 12,67 Ha. The growth of the population equal to the demand for housing. This is the reason for the developer to build new residential. The Bogor outer ring road project is also suspected as the trigger to the growth of residential area. With this infrastructure built, these new residential will have the best accessibility to or from Jakarta, which is the centre of economic activity in Indonesia. Bogor Municipality consist of two hierarchy, first hierarchy and third hierarchy. The third hierarchy consist of 57 villages. While another eleven 11 were classified as the first hierarchy. Essentially, the first hierarchy is the centre v of general activity and economic activity, which is why the first hierarchy is dominated by built up area, while the third hierarchy is commonly dominated by the non built area. There are two kinds of the inappropriateness between Regional Spatial Plan and 2007 land use. The first one is the Regional Spatial Plan which was built less than the allocated plan, which is dominated by the allocation for health facilities, with 1,8 Ha over 18,3Ha which was allocated. The second is the Regional Spatial Plan which was built more the allocated plan, which is dominated by the allocation for agriculture with 128,4 Ha allocated, but built up to 408,1 Ha. By identifying the inconsistencies of actual land use to Regional Spatial Plan (RTRW), spatial plan deviations in Bogor Municipality can be identified.
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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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