77 research outputs found

    Le regole del gioco: Primo incontro con l'ingegneria strategica

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    Cu particles decorated carbon composite microspheres (CCMs) with a unique sesame ball structure have been prepared by combining the mass-producible spray drying technique with calcinations. The conventional cuprammonium cellulose complex solution obtained by dissolving cellulose in a cuprammonia solution has been applied as raw materials for the preparation of Cu­(NH<sub>3</sub>)<sub>4</sub><sup>2+</sup>/cellulose complex microspheres via a spray drying process. The resulted Cu­(NH<sub>3</sub>)<sub>4</sub><sup>2+</sup>/cellulose complex microspheres are then transformed into the Cu particles homogeneously decorated porous carbon spheres <i>in situ</i> by calcinations at 450 or 550 °C. The coordination effect between the Cu­(NH<sub>3</sub>)<sub>4</sub><sup>2+</sup> species and the hydroxyl groups of the cellulose macromolecules has been exploited for directing the dispersion of the Cu particles in the resultant composite CCMs. The antimicrobial effects of the CCMs are evaluated by determining the minimum growth inhibitory concentrations using Staphylococcus aureus and Escherichia coli as representatives, respectively. The CCMs show high efficiency catalytic properties to the conversion of 4-nitrophenol to 4-aminophenol using NaBH<sub>4</sub> as a reductant in a mild condition. The recyclability and stability of the CCM catalysts have also been studied

    The redundant point whose valence is four.

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    <p>The black point is redundant point. The red points are 1-ring neighborhoods of the black point. The figure shows two cases that the black point is near two different diagonals.</p

    Results of applying the initial meshes and the improved meshes to AFMPB and TetGen.

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    <p>Results of applying the initial meshes and the improved meshes to AFMPB and TetGen.</p

    SMOPT

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    The procedure utilizes an algorithm to remove redundant points having three or four valences and another algorithm to smooth the mesh using a modified version of Laplacian method without causing intersecting triangles

    Initial mesh and improved meshes for an AChE monomer.

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    <p>(a) is the initial mesh, (b) is the improved mesh by SMOPT and (c) is the improved mesh by ISO2mesh. The left sub-figure in (c) shows an example of self-intersection in the mesh improved by ISO2mesh. The red triangle intersect with the yellow triangle. The left sub-figure in (b) shows the same region as the sub-figure in (c) and there is no intersection.</p

    The black point is considered as the redundant point when it has a valence of three and is almost on the plane formed by its 1-ring neighborhoods in red color.

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    <p>The black point is considered as the redundant point when it has a valence of three and is almost on the plane formed by its 1-ring neighborhoods in red color.</p

    Distributions of ratio of the shortest edge length to the longest edge.

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    <p>The left column is the ratios of the initial mesh, the middle column is the ratios of the improved mesh by our method and the right column is the ratios of the improved mesh by ISO2mesh.</p

    Distributions of angles of each triangle.

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    <p>The left column is the distributions of the initial mesh, the middle column is the distributions of the improved mesh by our method and the right column is the distributions of the improved mesh by ISO2mesh.</p
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