available online at http://meteoritics.org The use of Auger spectroscopy for the in situ elemental characterization of sub-micrometer presolar grains Frank J. STADERMANN1*, Christine FLOSS1,… (More)

In a recent paper, we used Li concentration profiles and U-Th ages to constrain the thermal conditions of magma storage. Wilson and co-authors argue that the data instead reflect control of Li… (More)

Considering a countable number of topologies on a set X, we introduce the notion of (א0)topological spaces as a generalization of the notions of both bitopological spaces and (ω)topological spaces,… (More)

The notion of bitopological full normality is introduced. Along with other results, we prove a bitopological version of A. H. Stone’s theorem on paracompactness: A Hausdorff topological space is… (More)

Stardust grains, more commonly referred to as presolar grains, are solid condensates of stars that are studied in terrestrial laboratories with a variety of analytical techniques. Here we report on… (More)

The notion of pairwise closure-preserving property of a collection of sets is introduced. Then some characterizations of pairwise paracompactness are obtained.

Photoautotrophs assimilate oxidized carbon obtained from one of two sources: dissolved or atmospheric. Despite its size, the pool of lithospheric carbonate is not known to be a direct source for… (More)