منابع مشابه
July 16, 2009 20:48 Philosophical Magazine textPHMa Philosophical Magazine
We report anisotropic thermal expansion of the parent, AEFe2As2 (AE = Ba, Sr, and Ca), compounds. Above the structural/antiferromagnetic phase transition anisotropy of the thermal expansion coefficients is observed, with the coefficient along the a-axis being significantly smaller than the coefficient for the c-axis. The high temperature (200 K ≤ T ≤ 300 K) coefficients themselves have similar ...
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The purpose of this study was to evaluate the effect of two handwriting approaches, D’Nealian and Sunform, on kindergartners’ letter formations. Forty-one participants received D’Nealian handwriting instruction as the control group; 133 kindergartners were instructed in Sunform as the experimental approach. Pre-post tests at the beginning and end of school year asked kindergarten students to wr...
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Tile crystal structures of sjogrenite and pyroaurite, two stacking modifications of approximate composition Mg.Fe.(OH),.(CO.).4H.O, have been determined by X-ray diffraction using three-dimensional methods. Sjogrenite is hexagonal, with a 3,13, C 15.66 A, space group P6.!mmc, Z = !; pyroaurite is rhombohedral, with aH 3,13, CH 23.49 A, space group R3m or R3m, Z = i. Both structures are based on...
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ژورنال
عنوان ژورنال: Il Nuovo Cimento
سال: 1895
ISSN: 0029-6341,1827-6121
DOI: 10.1007/bf02719992