Judul: Analisis Hujan, Debit Puncak Limpasan dan Volume Genangan di Sekitar Jalan Meranti–Tanjung, Kampus IPB Darmaga Bogor
Abstrak: Floods are an annual problem in Indonesia which almost happens every year. Bogor Agricultural University is also not spared from floods. One of location is around Meranti-Tanjung Road. This study aims to analyze rainfall, discharge of runoff and volume of puddles that occurred around Meranti-Tanjung Road. The procedure consisted of field studies, literature studies and data analysis. Based on the analysis, the direction of water flow around Meranti-Tanjung Road flows to the northwest where there is a Ciapus river as downstream of flow. Catchment area divided into 2 areas. Runoff coefficient (C) is between 0.28-0.55. The maximum daily rainfall around Meranti-Tanjung Road is 125.68 mm for the 2-year return period. Largest runoff peak discharge occurred in sub DTA 1E is 1.83 m3/sec. Puddles occurred in sub DTA 1B, 1D and 2A. The largest volume of puddles based measurements occurred on 5 April 2014 (rainfall is 113 mm) is 8.40 m3 in the sub DTA 1B, at sub DTA 1B is 8.18 m3 and at sub DTA 2A is 8.92 m3. The entirety volume of puddles at sub DTA 1B is 544 m3, at sub DTA 1D is 11054.6 m3, and at sub DTA 2A is 335.8 m3.
Keyword: rainfall, puddles, peak runoff, catchment area

Judul: Analisis dan Desain Bangunan Resapan Air Hujan di Sekitar Jalan Meranti-Tanjung Kampus IPB Darmaga, Bogor
Abstrak: Run-off and inundation problem are still common in around Meranti-Tanjung Street, IPB Darmaga, Bogor. The location of the worst inundation was beside CCR building, Faculty of Forestry area, and the road ahead SMA Kornita. Therefore, need a research to reduce the problems of inundation at that location. The purpose of this research is to determine the numbers and dimension of infiltration structure to reduce inundation volume and run-off at the research location with the concept of zero run-off and determines the effectiveness of run-off reduction. The methodology of research is the identification of the problem, literature review, data collection, data analysis, and the plan of design. The results indicate that the magnitude of the total flooding volume in that location is 6 911.47 m3, so it needs the construction of infiltration wells and perforated ditch. Both buildings are based on the calculation of flooding can reduce the total volume of 5 006.25 m3 or 72.43%. Then, the flood volume contribution is not absorbed is expected to be accommodated by the existing drainage channel.
Keyword: runoff, perforated ditch, inundation, IPB Darmaga, infiltration wells

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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