Judul: Pengelolaan Lanskap Habitat Musim Dingin Sikep Madu Asia (Pernis ptilorhynchus) Berbasis Satellite Tracking di Kawasan Talaga Bodas, Jawa Barat
Abstrak: Oriental Honey Buzzard (OHB) (Pernis ptilorhynchus) is one of migratory raptor that had been satellite-tracked since 2003. One of area which chosen by OHB was Talaga Bodas, placed in West Java. The objectives of this study were to identify and to compare the core and edge landscape characteristics of OHB‟s winter habitat in West Java, to compare characteristics of OHB‟s winter habitat in West Java with South Kalimantan, and to obtain the landscape management plan of OHB‟s winter habitat in Talaga Bodas area. Principal Component Analysis (PCA) combined with Geographical Information System (GIS) was used to identify and to compare the landscape characteristics. The results of this study were defined by twelve principal components (PCs) and eleven PCs, which were explained by 76% and 76,3% of the data variance in landscape characteristics of core and edge habitats respectively. The basic characteristics of core and edge ii habitats in West Java were related to the nearest distance by semi-plain area (3-8 % slope), the nearest distance by open land, and the nearest distance by paddy field. The difference of core and edge habitats in West Java and South Kalimantan was the conservation areas, where conservation areas of South Kalimantan placed in core habitat, whereas conservation areas of West Java area placed in edge habitat. Landscape management of winter habitat based on period (short and long term) was planned, and the ecotourism based on raptor migration was developed in Talaga Bodas area.
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Judul: Pengelolaan Lanskap Habitat Musim Dingin Sikep Madu Asia (Pernis ptylorhynchus) Berbasis Satellite Tracking Di Kalimantan Tengah
Abstrak: Knowledge about landscape characteristic of oriental honey buzzard (OHB) in the context of wintering habitat is a prerequisite for understanding their wintering as well as managing their habitats. This study intends to identify landscape characteristic of wintering habitat of OHB (core and edge habitat) in Central Kalimantan and to recommend management plan of wintering landscape habitat of OHB in Central Kalimantan. Geospatial Information System (GIS) combined with Principal Component Analysis (PCA) was used for analyzing several environmental variables in order to identify the characteristic in both core and edge habitats. Nine principal components (PCs) were retained and explained by 78,7% and 77,9% of the data variance in landscape characteristic of core and edge habitat, respectively. T-Student test method was used to compare environmental variables between core and edge habitat and also to compare with previous study in South Kalimantan, then the result was significantly different. Management of wintering habitat can be planed within a certain period (short term and long term) and specific location (core and edge habitat).
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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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