background: the method of proton induced x-ray emission (pixe) has been widely used as a sensitive technique to trace elemental analysis in both biological and medical fields. the sensitivity of this powerful method is in the order of ppm .the aim of this work is to analyze structural composition of 4 heavy trace elements with z greater than 24 (mn, fe, cu, zn) in two kinds of gallstones and to...

It is well known that the kinetic exchange interaction between single-occupied magnetic orbitals (s-s) is always antiferromagnetic, while between single- and double-occupied orbitals (s-d) is always ferromagnetic and much weaker. Here we show that the exchange interaction between strongly anisotropic doublets of lanthanides, actinides and transition metal ions with unquenched orbital momentum c...

In this paper, it is argued that Critical Discourse Studies (CDS) should be extended to also include what may be called Critical Context Studies (CCS). After a summary of the new theory of context, defined in terms of special mental models in episodic memory, subjectively representing the ‘definition of the communicative situation’ by the participants, it is argued how a critical analysis of te...

This contribution takes into focus elements as scenes of thought in order to contest our colonial, anthropocentric and extractivist mo-dernity: fires burning fossil fuels, waves the open sea, shores landscape islands, clouds sky beyond. We sug-gest that these motifs bear possibility examine problems present well develop other, differing new rela-tionalities.