27 research outputs found
On the partition function of the six-vertex model with domain wall boundary conditions
The six-vertex model on an square lattice with domain wall
boundary conditions is considered. A Fredholm determinant representation for
the partition function of the model is given. The kernel of the corresponding
integral operator is of the so-called integrable type, and involves classical
orthogonal polynomials. From this representation, a ``reconstruction'' formula
is proposed, which expresses the partition function as the trace of a suitably
chosen quantum operator, in the spirit of corner transfer matrix and vertex
operator approaches to integrable spin models.Comment: typos correcte
Photodynamic inactivation of mammalian viruses and bacteriophages
Photodynamic inactivation (PDI) has been used to inactivate microorganisms through the use of photosensitizers. The inactivation of mammalian viruses and bacteriophages by photosensitization has been applied with success since the first decades of the last century. Due to the fact that mammalian viruses are known to pose a threat to public health and that bacteriophages are frequently used as models of mammalian viruses, it is important to know and understand the mechanisms and photodynamic procedures involved in their photoinactivation. The aim of this review is to (i) summarize the main approaches developed until now for the photodynamic inactivation of bacteriophages and mammalian viruses and, (ii) discuss and compare the present state of the art of mammalian viruses PDI with phage photoinactivation, with special focus on the most relevant mechanisms, molecular targets and factors affecting the viral inactivation process.publishe