Mechanisms of the photosensitizedcis–transphotoisomerization of 3-penten-2-one which do not imply only classical triplet–triplet energy transfer are proposed; they are based upon measurements of the variations of initial quantum yields of isomerization with the initial donor and acceptor concentrations,...
These rocks undergo prograde and retrograde metamorphism during burial and exhumation, respectively. During exhumation, deformation evolves from ductile to brittle. The present thesis consists in an analysis of the successive deformations recorded by the Cycladic Blueschist Unit (CBU) in Greece during a ...