منابع مشابه
Geochemistry of the Martian meteorite ALH 84001, revisited
Major and trace element abundances were determined on powders prepared from four distinct chips from Allan Hills (ALH) 84001 to constrain the bulk rock composition, and to assess the trace element abundances of orthopyroxenes and phosphates. Our new determinations were used to evaluate the composition of the parental melt of this stone. An unrealistic light rare earth element (REE)-enriched par...
متن کاملGeochemistry of the martian meteorite ALH 84001 , revisited by
Major and trace element abundances were determined on powders prepared from four distinct chips from ALH84001 in order to constrain the bulk rock composition, and to assess the trace element abundances of orthopyroxenes and phosphates. Our new determinations were used to evaluate the composition of the parental melt of this stone. An unrealistic light-REE enriched parental melt is calculated fr...
متن کاملPresolar Graphite from the Murchison Meteorite: Noble Gases Revisited
Introduction: Ne-E(L) is one of the anomalous noble gas components that ultimately led to the discovery of presolar grains in meteorites. The component is extremely enriched in 22 Ne and this fact prompted the idea that the 22 Ne is from the decay of 22 Na [1]. The carrier of Ne-E(L) is presolar graphite [2], which has been extracted from Murchison [3] and Orgueil [4]. There are four graphite-r...
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In this paper we give conditions under which a ring is isomorphic to a structural matrix ring over a division ring.
متن کاملThe Wedderburn Principal Theorem for Alternative Algebras
for all a, x in 21. I t is clear that associative algebras are alternative. The most famous examples of alternative algebras which are not associative are the so-called Cayley-Dickson algebras of order 8 over $. Let S be an algebra of order 2 over % which is either a separable quadratic field over 5 or the direct sum 5 ©3There is one automorphism z—>z of S (over %) which is not the identity aut...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society of Victoria
سال: 2019
ISSN: 0035-9211
DOI: 10.1071/rs19010