Judul: Kemampuan Jalur Hijau Jalan di Kota Bogor dalam Meredam Kebisingan Lalu Lintas.
Abstrak: Traffic activity can cause some noise, which at certain levels can interfere with human health. One attempt to reduce noise by building green belt road. in urban areas. The purpose of this study was to determine the ability of the roadside vegetation in reducing noise. This observation was carried out around the roadside vegetation on Jl. Padjadjaran, Jl. A. Yani, Jl. Juanda and the Bogor Botanical Garden, conducted July 2014 until August 2014. The data which been collected was the noise level around the green belt road, the composition and structure of vegetation and leaf area index. Roadside vegetation in Jl. A. Yani with 2.9788 leaf area index of 2.9788 has a high reduce noise that is equal to 7.31 dB, while the lowest reduction occurred ability on the roadside vegetation Jl. Padjadjaran (Telkom) with leaf area index of 1.322 that is equal to 3.03 dB.
Keyword: leaf area index, noise reduce, roadside vegetation

Judul: Evaluasi Efektivitas Tanaman dalam Mereduksi Polusi Berdasarkan Karakter Fisik Pohon pada Jalur Hijau Jalan Pajajaran Bogor
Abstrak: Pajajaran street is one of the main street in Bogor city which has been famous with a high density of vehicle so it has a of high levels of air pollution potential because of the vehicle emissions. This study was conducted to analysis the effectiveness of plants to absorb pollutants in the road side trees based on an assessment of the physical characteristics of the trees to support the surrounding environment and provide recommendations for increase the ecological function of Pajajaran Bogor road side trees in reducing the air pollution. The method of this study used descriptive analysis, spatial analysis, and air quality analysis used the CITYgreen 5.4. The ecological function evaluation of Pajajaran Bogor road side trees in reducing the air pollution shows there are 958 trees which very appropriate to absorb the air pollution, 238 trees which appropriate to absorb the air pollution, 70 trees which less appropriate to absorb the air pollution, and there is no tree which not appropriate to absorb the air pollution. While the function of absorbing particles evaluation shows there is one tree which very appropriate in absorbing the particles, 1136 trees which appropriate in absorbing the particles, 101 trees which less appropriate in absorbing the particles, and 73 trees which not appropriate in absorbing the particles. The result of analysis used CITYgreen 5.4 shows Pajajaran Street Bogor can reduce pollutants in the amount of 2544 lbs (1,298 ton/year) with economic benefits value by $ 6.268 (Rp75.167.175,12). Pajajaran Street Bogor need to add as many as 485 trees in an area that does not have a tree planting so as to optimally reduce the amount of pollution as much as 1.66 ton/year, equivalent to the economic value of Rp 121 095 216.
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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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