Results 141 to 150 of about 563,270 (278)

Xenoliths in meteorites: Insights into the dynamics of material exchange between asteroids

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract A minor fraction of meteorites contains xenoliths, that is, clasts that were formed on a different parent body than that of the host lithology. The occurrence of xenoliths is direct evidence for the exchange of material between asteroids, including exchanges between asteroids from the carbonaceous (CC) and non‐carbonaceous (NC) reservoirs ...
J. Gattacceca   +17 more
wiley   +1 more source

A Microkrystite from the Australasian Tektite/Microtektite Strewn Field

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Microkrystites are glassy impact spherules. They contain primary crystallites carrying information on the physical and chemical conditions prevailing during vaporization, melting, and ejection in large impact cratering events. We report on the geochemistry and mineralogy down to nanometer scale of the first microkrystite (ODP1144A,14) from the
Matteo Del Rio   +4 more
wiley   +1 more source

Cauchy problem for derivors in finite dimension

open access: yesElectronic Journal of Differential Equations, 2001
In this paper we study the uniqueness of solutions to ordinary differential equations which fail to satisfy both accretivity condition and the uniqueness condition of Nagumo, Osgood and Kamke.
Jean-Francois Couchouron   +2 more
doaj  

Variably shock‐compacted chondrites: Deformation–thermal histories, large differences in mineral deformation response, and implications for lithification

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Eight different H, L, and LL chondrites with 11 lithologies were studied and show good evidence for progressive shock effects and compaction. In weakly shocked chondrites (Baszkόwka, Bjurböle, Saratov, NWA 7298 Lithology A and C), silicates were dominantly fractured, troilite and metal were more deformed than olivine and fluidized, and ...
Alex M. Ruzicka   +5 more
wiley   +1 more source

“Nowhere else to go”: Slow abandonment and (en)closures of long‐term care in Los Angeles

open access: yesMedical Anthropology Quarterly, EarlyView.
Abstract Residential long‐term care facilities, known in California as “board and care” homes, have been closing rapidly in the last decade. Proponents assert these provide vital forms of housing and care to the poor and must be saved, while critics contend they perpetuate the institutionalization of people with disabilities and should be abolished ...
Maxwell A. Hellmann
wiley   +1 more source

On quantitative metastability for accretive operators

open access: yesZeitschrift für Analysis und ihre Anwendungen
Kohlenbach and the author have extracted a rate of metastability for approximating curves associated to continuous pseudocontractive self-mappings in Banach spaces which are uniformly convex and uniformly smooth, whose convergence is due to Reich. In this note, we show that this result may be extended to Reich’s original convergence statement involving
openaire   +3 more sources

Lonergan, Decolonization and First Nations Peoples: An Apologetic from an Insider on the Outside

open access: yesModern Theology, EarlyView.
Abstract The purpose of this article is to respond critically to a research project initiated out of the Board of the Lonergan Research Institute that seeks to expose colonialist assumptions in Lonergan's thought. Some of the initiatives seek to link Lonergan with complicity in Canadian residential schools, spiritual violence, and cultural genocide ...
John D. Dadosky
wiley   +1 more source

New Iterative Approximation Methods for a Countable Family of Nonexpansive Mappings in Banach Spaces

open access: yesFixed Point Theory and Applications, 2011
We introduce new general iterative approximation methods for finding a common fixed point of a countable family of nonexpansive mappings. Strong convergence theorems are established in the framework of reflexive Banach spaces which admit a weakly ...
Wangkeeree Rabian, Nammanee Kamonrat
doaj  

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