On the evaluation of energy behavior of radiation fields generated by exoergic reactions in axi-symmetric emitters.

The analytical characterization of the spatial dependency of the mean energy particles produced in non-dispersive media by exoergic reactions having axial symmetry is important in the study of these nuclear reactions. The objective of this paper is to provide an efficient and reliable analytical procedure for the evaluation of energy behavior of particles around axi-symmetric radiation field emitter. We can evaluate high terms of energy expressions, which have been proposed in Timus (2005a). Test calculations show that the proposed algorithm in this work is the most efficient one in practical computations.

A particular structure associated to the nucleoid of cyanobacteria.

Regressive staining as well as beta-radiations or trypsin treatment on Synechocystis PCC6803 and Spirulina platensis (Gom,-Geilteri.) whole cells or permeaplasts, respectively, have demonstrated the presence of a particular structure associated to the nucleoid of cyanobacteria. This structure with a tridimensional network aspect has been called scaffold-like. We presume that it represents the cellular-molecular support for the supercoiling of the nucleoid of cyanobacteria.