Results 81 to 90 of about 7,889,759 (256)

UHECR Composition Models

open access: yes, 2013
In light of the increasingly heavy UHECR composition at the highest energies, as observed by the Pierre Auger Observatory, the implications of these results on the actual source composition and spectra are investigated. Depending on the maximum energy of
Taylor, Andrew M.
core   +1 more source

Reconstructing compositions

open access: yesDiscrete Mathematics, 2008
We consider the problem of reconstructing compositions of an integer from their subcompositions, which was raised by Raykova (albeit disguised as a question about layered permutations). We show that every composition w of n\ge 3k+1 can be reconstructed from its set of k-deletions, i.e., the set of all compositions of n-k contained in w.
openaire   +3 more sources

Metal etching composition [PDF]

open access: yes, 1991
The present invention is directed to a chemical etching composition for etching metals or metallic alloys. The composition includes a solution of hydrochloric acid, phosphoric acid, ethylene glycol, and an oxidizing agent.
Foster, Robert E.   +2 more
core   +1 more source

Composites

open access: yes, 2015
[eng] The four main chapters in this dissertation, while each largely self-standing, can be seen as together providing an extended defence of the view that classical mereology is analytically true. In chapter 1, I criticise Eli Hirsch’s influential deflationary account of the ontological debate on composition, according to which universalists and ...
openaire   +1 more source

Home - About - Disclaimer - Privacy