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: Analisis Perubahan Penggunaan Lahan, Pola Ruang dan Tingkat Perkembangan Wilayah di Kota Bogor
Abstrak: Bogor City is located 60 kms from the Indonesian Capital Jakarta and 120 kms from Bandung the capital of West Java Province. Strategic agricultural land and inexpensive land price have encouraged stakeholders to invest in agricultural sector and also non agricultural sector. Land use conversion is inevitable, although the goverment has set up the regulation to control land usage (Act No 26 year 2007). This research are conducted: (1) To analyze existing land use of Bogor City (land use in 2014). (2) To analyze the land use change in period of 2005-2012. (3) To analyze the consistency of existing land use compare to land allocation in the RTRW of Bogor City. (4) To identify regional development hierarchy level in Bogor City. (5) To determine factors that influencing land use change. This research was started with land usage map designing which retrieved from digitized result on administrative map 1: 5000 scales to ikonos image of Bogor City in years of 2005 and 2012. Consistency and inconsistency is obtained by overlaying land use map in 2012 and land allocation map of Bogor City years 2011-2031 (RTRW map). PODES is used to determine the regional hierarchy level by multiple regression method. Existing land use classified into 9 land use, in sequence from the largest one are: mixed garden, non-wellarrang ed settlement, paddy field, well arranged settlement, trade area, water body, dryland farm, open field and goverment office area. Dryland farm land use changes into 2 land use, open field land use change into 6 land use and paddy field land use change into 6 land use. The consistent existing land use compare to RTRW is 40.95% while inconsistence existing land use is 59.05%. During period of 2006 to 2012, most of regional development hierarchy in Bogor City are the relative constant hierarchy (42 villages/61.8%). 12 villages (17.6%) are increase in the hierarchy whilst 14 villages (20.6%) are decrease in the hierarchy. Factors that influencing land use change of Bogor City in period of 2005-2012 are: area of agricultural land in the years of 2005, social facilities growth, and economy facilities growth
Keyword: Spatial Plan., Regional Hierarchy, Land Use Inconsistency, Land Use Conversion

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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