Judul: Impact of the Construction of the Dramaga Ring Road on the Surrounding Land
Abstrak: Pertumbuhan penduduk di Kabupaten Bogor mengalami peningkatan setiap tahun dan akan berpengaruh terhadap pembangunan jalan serta keadaan (lahan) di sekitarnya. Penelitian ini bertujuan untuk mengidentifikasi penggunaan lahan sepanjang Jalan Lingkar Dramaga (JLD) tahun 2011-2019, mengetahui perubahan penutupan/penggunaan lahan sepanjang JLD, menganalisis pola lanskap di wilayah sekitar JLD, menganalisis keberagaman/penyebaran spasial dan menganalisis nilai indeks Local Indicators of Spatial Association (LISA). Penelitian dilakukan di sepanjang JLD. Hasil identifikasi penggunaan lahan tahun 2011-2019 di sepanjang JLD menunjukkan terdapat 18 penutupan/penggunaan lahan. Pada periode 2011 - 2019 penutupan/penggunaan yang paling banyak terkonversi adalah lahan pertanian menjadi non pertanian Keberagaman/penyebaran spasial penutupan/penggunaan lahan berdasarkan luas dan jumlah poligon menunjukkan bahwa dari tahun 2011 ke 2019, wilayah di sekitar JLD semakin besar yang mengindikasikan kondisi wilayah yang semakin berkembang. Hasil analisis pola lanskap lahan sawah menunjukkan nilai Class Area (CA) mengalami penurunan, nilai Number of Patch (NumP) mengalami kenaikan dan nilai Mean Patch Size (MPS) semakin menurun. Sementara itu, nilai Total Edge (TE) mengalami kenaikan dari tahun ke tahun. Baik pada penutupan/penggunaan lahan pertanian dan terbangun autokorelasi spasialnya bernilai positif. Artinya mengindikasikan lokasi yang berdekatan mempunyai nilai yang mirip dan cenderung berkelompok. Indeks LISA penutupan/penggunaan lahan pertanian dan terbangun berada pada kuadran II yang menunjukkan bahwa daerah yang mempunyai luas lahan rendah dikelilingi oleh daerah yang mempunyai luas lahan tinggi., Population growth in Bogor Regency has increased every year, which will affect road construction which will have an impact on the conditions around the road. This study aims to identify land use along the Dramaga Ring Road (JLD) in 2011-2019, determine changes in land cover/use along the JLD, analyze landscape patterns in the area around the JLD, analyze spatial diversity/distribution and analyze the index value of the Local Indicators of Spatial Association. (LISA). The study was conducted along the JLD. The results of the identification of land use in 2011-2019 along the JLD showed that there were 18 land uses/coverages. In the period 2011 - 2019 the most converted land cover/use was agricultural land into non-agricultural land The diversity/spatial distribution of land cover/use based on area and number of polygons shows that from 2011 to 2019, the area around the JLD is getting bigger which indicates a growing area. develop. The results of the analysis of the paddy field landscape pattern show that the Class Area (CA) value has decreased, the Number of Patch (NumP) value has increased and the Mean Patch Size (MPS) value has decreased. Meanwhile, the Total Edge (TE) value has increased from year to year. Both the cover/use of agricultural land and the spatial autocorrelation built are positive. This means that it indicates that adjacent locations have similar values and tend to be clustered. The LISA index of agricultural land cover/use and built verada is in quadrant II which shows that areas with low land area are surrounded by areas with high land area.
Keyword: Indeks Entropi, Indeks LISA, Perubahan penutupan/penggunaan lahan, Pola lanskap, Entropy Index, LISA Index, Land cover/use change, Landscape pattern

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: Synthesis of Apatite - Chitosan Composite Using Duck Eggshell and Chitosan with Temperature and pH Control
Abstrak: Composite of apatite-chitosan was prepared by using chitosan as polymer matrix. Calcium phosphate was prepared from CaO and (NH4)2HPO4, which the ratio Ca : P had to be 1.67. Chitosan is produced by deacetilase from biopolymer chitin. Duck eggshell (95% CaCO3) as starting material was converted to be calcium oxide (CaO) through calcinations with temperature 1000oC for 5 hours. In-situ and ex-situ methods were prepared from apatite and chitosan (dissolved with acetate acid 2%). Calcium phosphate prepared for bone implantation, but it is too fragile and brittle to be implant into the body. So addition of chitosan can decrease crystalinity and increase mechanic characteristic (tougher). Composite apatite-chitosan was resulted by fast precipitation. Fast precipitation was held in a breaker glass with nitrogen atmosphere, under controlled temperature at 37oC and pH 7, in order to increase amount of hydroxyapatite. Precipitation with CaO which was dropped by (NH4)2HPO4. Hydroxyapatite and chitosan were appearing at samples with in-situ and ex-situ methods which indicating by peak matching of XRD (closed lattice parameter, crystal size), overlapping at FTIR spectra and supporting by SEM picture (homogenous and agglomerated particle). However, it still needs further research to examine biocompatibility osteoconductive degree of sample by in-vivo and in-vitro test.
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