منابع مشابه
Fractionation of Platinum Group Elements in Carboneceous Chondrites
Introduction: Although chondrites are among the most primitive materials accessible to us, their chemical compositions are highly variable among groups of chondrites, reflecting several fractionation processes including condensation and accretion processes in the early solar system. Considering that CI chondrites represent a solar system standard in the elemental abundance [1] and that calcium ...
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متن کاملStructure of a disk-like mesophase
2014 We have obtained X-ray diffraction patterns from the mesomorphic phase of two derivatives of terphenylene. The observations agree with the structure already proposed for the mesomorphic phase of a similar molecule : the molecules are stacked in columns and the columns form a regular hexagonal array. In addition it is possible to give a more accurate description of the positions of the terp...
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ژورنال
عنوان ژورنال: Sen'i Gakkaishi
سال: 1979
ISSN: 0037-9875,1884-2259
DOI: 10.2115/fiber.35.11_p343