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: Pemanfaatan Hijauan di Pematang Sawah di Desa Cihideung Udik, Cibitung Tengah, dan Situ Udik, Kabupaten Bogor, Jawa Barat
Abstrak: Dike in is considerable as forage potency. Forage growing around the dike in has been used by farmers, depend on people who sickling in the dike in. This study aimed to evaluate the potential of forage in dike in as forage source and potency local forage mapping also to evaluate the dike in changes. This study used botanical composition analysis, vegetation analysis, capacity improvement of ruminant livestock population, and area mapping. The results of botanical composition showed that Eleusine indica (L.) Gaertn., Ageratum conyzoides L., and Axonopus compressus (Sw.) P. Beauv. were the top three. The conclusion of the research conducted in the dike in at Cihideung Udik, Cibitung Tengah, and Situ Udik village are Brachiaria mutica (Forsk.) Stapf., Pennisetum purpureum Schumaker., and Eleusine indica (L.) Gaertn. are potential as forages source.
Keyword: dike in, forage potential, geographic information system, botanical composition

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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