Judul: Estimasi Sebaran Daerah Rawan Banjir Menggunakan Model HEC-RAS dan Kerugian Masyarakat di Wilayah Sub-DAS Citarik
Abstrak: Flood events in Upper Citarum watershed, especially in Citarik Subwatershed has increased sharply and it caused high enough economic loss. HECRAS model can be used to solve flood problem. Therefore, it is necessary to study Citarik Sub-watershed to identify the flood prone areas using HEC-RAS model and compute the economic loss in residential building sector in this region. Energy equation was used to compute steady flow analysis in HEC-RAS program. Flood prone areas dominantly occurred in low land areas, i.e. Rancaekek Kulon, Wangisagara, and Padamukti village that consist landuse land cover of rural, paddy,and secondary forest with low enough model accuracy. Rancaekek Kulon had the largest flooded areas which had high enough economic loss in minimum and maximum flood event.
Keyword: Bogor Agricultural University (IPB), economic loss., flood prone area, HEC-RAS Model

Judul: Evaluasi Daerah Rawan Banjir Dengan Menggunakan Model HECRAS Di Sub DAS Dayeuhkolot Bandung
Abstrak: Banjir merupakan genangan yang disebabkan oleh volume air yang mengalir pada suatu sungai ataupun saluran drainase yang melebihi kapasitasnya. Hal ini terjadi karena pemanfaatan daerah aliran sungai (DAS) yang berlebihan sehingga banjir terjadi di musim hujan, kekeringan di musim kemarau, dan penurunan nilai debit air sungai. Penelitian ini mengevaluasi daerah rawan banjir di Sub DAS Dayeuhkolot, Kecamatan Dayeuhkolot, Kabupaten Bandung, dengan menggunakan Sistem Informasi Geografis (SIG) dan model hidrologi HEC-RAS pada aliran mantap (steady flow). Metodologi penelitian meliputi empat langkah yaitu, river centerline, river banks, flowpath, dan cross section. Hasil analisis menunjukan bahwa perubahan tutupan lahan akibat meningkatnya kepadatan pemukiman di sekitar Sub DAS, menyebabkan banjir di Kecamatan Dayeuhkolot dengan nilai debit maksimum yang digunakan yaitu 219,75 m³/s, nilai koefisien aliran 0,65, nilai intensitas hujan maksimum 28,2 mm/hari, nilai luas daerah aliran sungai 1.035,8 km2, nilai mannings 0,02, dan nilai Froude 0,6 (Sub-Critical). Luara model berupa peta menunjukkan bahwa beberapa titik banjir yang meluap dari daerah alirannya mengenai jalanan serta wilayah industri. Hal tersebut disebabkan oleh lengkungan pada DAS, dimana kecepatan aliran mempengaruhi sebaran besarnya banjir yang terjadi. Hasil validasi yang dilakukan menggunakan metode kappa koefisien dengan tingkat akurasi sebesar 64%. Model hidrologi HEC-RAS mampu digunakan untuk memodelkan sebaran daerah rawan banjir di lokasi kajian.
Keyword: Flood, Watershed, Dayeuhkolot, HEC-RAS

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