Judul: Analisis Hidrologi Bendung Katulampa: Potensi Pengembangannya sebagai Bendungan Pengendali Banjir Jakarta
Abstrak: As Jakarta developed into a metropolitan city, flood problems become the center of attention for its citizens and government. Ciliwung river is one of significant contributors to flood discharge in Jakarta. Flood control can be done by constructing a dam which retains water in the upstream area. Katulampa weir is often taken as indicator and early warning for Jakarta’s flood eventhough it’s not a flood control structure. Hydrological analysis taken as an initial step to understand the potential of Katulampa weir to be developed as a dam. Twenty three years daily rainfall data from three stations are analysed using log Pearson III (LPIII) distribution to produce design storm with 25, 50, 100, and 200 years of return periods. HEC-HMS (Hydrologic Engineering Center-Hydrology Modelling System) was employed to model design flood using two storm events in two different days. It resulted design flood with average of 91.2; 107.5; 124.6; and 142.5 m3/s also total inflow flood design volume 3.4; 3.9; 4.5; and 5.1 million m3 for each respective return period. A simple simulation was performed to estimate inundated area in Katulampa as dam. It turns out that 35-45 ha are needed to retain flood volume per return periods above.
Keyword: design flood, return period, Upper Ciliwung watershed, HEC-HMS

Judul: Analisis Jaringan Sungai Ciliwung Hulu untuk Menentukan Hidrograf Banjir
Abstrak: Hydrograph is a graphical representation of flow with time. Hydrograph shape is determined by the rainfall input and morphometry of the watershed. Upper Ciliwung watershed contributes greatly to the floods that hit Jakarta. This study aimed to determine the characteristics of the Upper Ciliwung river networks and analyze the flood hydrograph pattern formed by the river network density. Determination of the characteristics of stream network is based on SRTM DEM 90 m x 90 m, and it is obtained that the Upper Ciliwung river has four Strahler river order with length ratio (RL) and branching ratio (Rb) that were different for each river order . Flood hydrograph was calculated using geomorphology convolution method and the simulated discharges were compared to observed discharges recorded at the Katulampa station for two rainfall events on January 16, 2013 and March 4, 2013. Based on the values of Nash-Sutcliffe coefficient obtained from the comparison of simulated discharge and observed discharges that were 0.72 for January 16, 2013 flood and 0.66 for March 4, 2013 flood, it is concluded that flood could be determined using geomorphology convolution method based on the river network density from SRTM DEM data.
Keyword: SRTM DEM data, River network characteristics, Geomorphology convolution method

Judul: Enrichment of organic selenium, inorganic selenium and  vitamin E in quail products through its supplementation in the diet and its potency  of quail eggs as an ingredient in selenium-rich egg juice
Abstrak: This study was aimed to achieve an optimum level of combine organic selenium, inorganic selenium and vitamin E in obtaining the best production and reproduction as well as the highest level of selenium in quail eggs. This study was conducted from January to August 2008. Numbers of observed quails were 720 (360 females and 360 males). The treatments were applied when the quails were six weeks old. Nine treatment diets were: To (commercial diet), T1(0.46 ppm inorganic Se + 43.50 ppm vitamin E), T2 (0.46 ppm inorganic Se + 87.00 ppm vitamin E), T3 (0.92 ppm inorganic Se + 43.50 ppm vitamin E), T4 (0.92 ppm inorganic Se +87.00 ppm vitamin E), T5 (0.46 ppm organic Se + 43.50 ppm vitamin E), T6 (0.46 ppm organic Se + 87.00 ppm vitamin E), T7(0.92 ppm organic Se + 43.50 vitamin E) and T8(0.92 ppm organic Se + 87.00 ppm vitamin E).
Keyword: egg yolk, glutathione peroxidase ( GSH-Px), hedonic test, rank test