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Nickel oxalate micro-spheres with core-shell structure of solid core and radiate shell were synthesized by precipitation method in a mixed water solution, with oxalic acid and nickel acetate as raw materials, through dropping ammonium hydroxide to adjust the solution pH value to about 8.0. Nickel microspheres with core-shell structure of solid core and porous shell were prepared by decomposing of...
Construction of intrinsic Delaunay triangulation (iDt for short) on 2-manifolds has attracted considerable attentions recently, due to its theoretical contributions to surface reconstruction. In this paper we analyze a 2-manifold sampling criterion based on iDt in a combinatorial way. The main contribution of this work is to establish the theoretical bounds of iDt mesh quality based on this sampling...
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