G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
G09F7/02—Signs, plates, panels or boards using readily-detachable elements bearing or forming symbols
G09F7/04—Signs, plates, panels or boards using readily-detachable elements bearing or forming symbols the elements being secured or adapted to be secured by magnetic means
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Physics & Mathematics
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General Physics & Mathematics
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Engineering & Computer Science
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Theoretical Computer Science
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Medicines That Contain Protein Lipid Enzymes And Other Medicines
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Na1. 5Al10. 83O17 hP60 (194) P63/mmc–k3f3edcba Na1. 50Al10. 83O17 [1], β alumina-Na; KFe11O17 [2] Structural features: Spinel-type slabs (four close-packed O layers in c stacking, Al in octahedral and tetrahedral voids) and NaO layers (Na at BR and aBR positions) alternate along [001]. Infinite slabs of edge-linked AlO6 octahedra sharing vertices with single AlO4 tetrahedra are interconnected via units of