The inducible isoform of the enzyme cyclooxygenase-2 (COX2) is an immediate early gene induced by synaptic activity in the brain. COX2 activity is an important mediator of inflammation, but it is not known whether COX2 activity is pathogenic in brain. To study the role of COX2 activity in ischemic injury in brain, expression of COX2 mRNA and protein and the effect of treatment with a COX2 inhib...

Composite Galois Field GF ((2)) multiplications denote the multiplication with extension field over the ground field GF (2), that are used in cryptography and error correcting codes. In this paper, composite versatile and vector GF ((2)) multipliers are proposed. The proposed versatile GF ((2)) multiplier design is used to perform the GF ((2)) multiplication, where 2 ≤ x ≤ m. The proposed vecto...

We investigate the presence of chaos in a system of two real scalar fields with discrete Z 2 × Z 2 symmetry. The potential that identify the system is defined with a real parameter r and presents distinct features for r > 0 and for r < 0. For static field configurations, the system ntsupports two topological sectors for r > 0, and only one for r < 0. Under the assumption of spatially homogeneou...

Recent studies of QCD Green’s functions and their applications in hadronic physics are reviewed. We discuss the definition of the generating functional in gauge theories, in particular, the rôle of redundant degrees of freedom, possibilities of a complete gauge fixing versus gauge fixing in presence of Gribov copies, BRS invariance and positivity. The apparent contradiction between positivity a...

The main elements and methods of chiral perturbation theory, the effective field theory of the Standard Model below the scale of spontaneous chiral symmetry breaking, are summarized. Applications to the interactions of mesons and baryons at low energies are reviewed, with special emphasis on developments of the last three years. Among the topics covered are the strong, electromagnetic and semil...