663 resultados para MGB4O7-DY
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Bibliographical footnotes.
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Includes bibliographical references and index.
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Imprint in vols. 2-6: Tip. voenno-uchebnykh zavedenīĭ.
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t. 1. St︠s︡eny iz narodnago byta -- St︠s︡eny iz kupecheskago byta -- St︠s︡eny iz gorodskoĭ zhizni -- Monologi -- t. 2. Ocherki i razskazy -- Dramaticheskīe ėti︠u︡dy -- Podrazhanīi︠a︡ starinnoĭ pisʹmennosti -- Ocherki iz istorīii teatra -- Otryvki iz vospominanīĭ.
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Mode of access: Internet.
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cont'd. díl 22. Romanetta. [pt.] 7 -- díl 23. Knihy novel a povídek. [pt.] 5 -- díl 24. Z ovzduši umění -- díl 25. Romanetta. [pt.] 8 -- díl 26. Záhadné povahy -- díl 27. Romanetta. [pt.] 9 -- díl 28. Z duševní dílny básniků. [pt.] 1 -- díl 29. Episody z roku 1848 -- díl 30. Z galerie českého herectva. [pt.] 1 -- díl 31. Knihy novel a povidek. [pt.] 6 -- díl 32. Theatralia. [pt.] 1 -- díl 33. Elegie života. [pt.] 2 -- díl 34. Feuilletony. [pt.] 1 -- díl 35. Romanetta. [pt.] 4. 4 vyd. -- díl 36. Z duševní dílny básníků. [pt.] 2 -- díl 37. Z galerie českého herectva. [pt.] 2 -- díl 38. Feuilletony. [pt.] 2 -- díl 39. Theatralia. [pt.] 2 -- díl 40. Idylly utrpení a bídy. 3., pozměněně vyd.
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Mode of access: Internet.
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Includes bibliographical references.
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Printed on double leaves.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Title from cover.
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The effects of different concentrations of individual additions of rare earth metals (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu) on eutectic modification in Al-10mass%Si has been studied by thermal analysis and optical microscopy. According to the twin-plane re-entrant edge (TPRE) and impurity induced twinning mechanism, rare earth metals with atomic radii of about 1.65 times larger than that of silicon, are possible candidates for eutectic modification. All of the rare earth elements caused a depression of the eutectic growth temperature, but only Eu modified the eutectic silicon to a fibrous morphology. At best, the remaining elements resulted in only a small degree of refinement of the plate-like silicon. The samples were also quenched during the eutectic arrest to examine the eutectic solidification modes. Many of the rare-earth additions significantly altered the eutectic solidification mode from that of the unmodified alloy. It is concluded that the impurity induced twinning model of modification, based on atomic radius alone, is inadequate and other mechanisms are essential for the modification process. Furthermore, modification and the eutectic nucleation and growth modes are controlled independently of each other.