Judul: Pemanfaatan Hijauan di Lahan Irigasi di Desa Cihideung Udik, Cibitung Tengah, dan Situ Udik, Kabupaten Bogor, Jawa Barat
Abstrak: Irrigation dike which overgrow with a variety of vegetation potentially as forage source, but still underutilized by farmers. The aim of this research was to evaluate how much irrigation area that is potential for forage source and mapping potential forage source at Cihideung Udik, Cibitung Tengah, and Situ Udik village. This research used geographic information system mapping, botanical composition, vegetation analysis, and capacity improvement of ruminant livestock population. The result of botanical composition showed that Wedelia montana var pilosa H., Brachiaria mutica (Forsk.) Stapf., and Panicum repens L. occupies the main peringkat. The vegetation analysis showed that Wedelia montana is the dominant plant. The conclusion of this research was irrigation area at Cihideung Udik, Cibitung Tengah, and Situ Udik village have forage potential to be used by farmers. The two forages that dominate these villages are Panicum repens L. and Brachiaria mutica (Forsk.) Stapf..
Keyword: irrigation, geographic information system, forage potential, botanical composition

Judul: Analisis Tata Guna Lahan dan Kecukupan Irigasi di Desa Cihideung Udik dan Desa Cihideung Ilir, Lingkar Kampus IPB
Abstrak: Land and water are the most important elements that support agriculture. Land use is the way of planning land usage of certain area, by dividing it based on specific functions of settlement, paddy field, plantation, industry, etc. The purposes of this research are to identify land use and irrigation availability for planting, and to find out irrigation sufficiency in two villages around campus. Irrigation requirement for the both villages were sufficient. Although the agriculture area is wide, it was only used for planting of palawija. Based on the result of the both villages availability, the land can be planted with the pattern of paddy-paddy-palawija. Irrigation requirements were obtained using Cropwat. In Cihideung Udik Village, the irrigation requirement was 0.07751 l/s and the average daily debit was 22.36 l/s. In Cihideung Ilir Village, the values obtained were respectively 0.29313 l/s and 23.39 l/s. These values showed that both villages have sufficient water supply. The average daily debit were far bigger than the irrigation requirement. A change in land use was also discovered, from farming area to settlement. Total farming area in 2009 (village profile) was less than the one in 2008 (Bakosurtanal).
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Judul: Characterizations of low alloy steel sae 4422  plated with chromic acid (Cro3)
Abstrak: Characterizations of low alloy steel SAE 4422 plated with chromic acid (CrOrO3) was use Optical Microscopy (OM), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), RD),Energy Dispersive Analysis of X-Ray (EDAX), Hardness Test and Roughness Test. Microstructures analysis exhibits cracks and grain boundaries microcracks as a characteristics of chrome metal found at plating metal. Perlite and Ferrite as grains of steel found at base metal with grain boundaries around it. Phase analysis of plating metal appropriate to chrome metal with lattice constant (a) is 2.559 Å and phase analysis of base metal appropriate to iron ferrite with lattice constant (a) is 3.318 Å. Both plating and base metal have cubic system. Chemical analysis of plating metal at surface section exhibits that cracks area have highest value of carbon element compare with grains and grains boundaries area. While chemical analysis of base metal at cross section exhibits that perlite have highest value of carbon element compare with ferrite and grain boundaries. The hardness value of plating metal at surface section and cross section are 753 and 637 VHN. While, the hardness value of base metal and interface area at cross section are 205 and 373 VHN. The roughness value at measurement points of chrome surface for as received sample are 0.445 μm. Observation used Optical Microscopy and Scanning Electron Microscopy exhibits surface irregularities combine to form surface texture of plating metal at surface section.
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