Fernando Fernández-Sánchez

Learn More
BACKGROUND Healthcare-associated (HCA) bloodstream infections (BSI) have been associated with worse outcomes, in terms of higher frequencies of antibiotic-resistant microorganisms and inappropriate therapy than strict community-acquired (CA) BSI. Recent changes in the epidemiology of community (CO)-BSI and treatment protocols may have modified this(More)
In this work, the presence of closed bifurcation curves of homoclinic and heteroclinic connections has been detected in Chua's equation. We have numerically found and qualitatively described the mechanism of the formation/destruction of such closed curves. We relate this phenomenon to a failure of transversality in a curve of T-points in a three-dimensional(More)
Non-transversal T-points have been recently found in problems from many different fields: electronic circuits, pendula and laser problems. In this work we study a model, based on the construction of a Poincaré map, that describes the behaviour of curves of saddle-node and cusp bifurcations in the vicinity of such a non-transversal T-point. This model is(More)
OBJECTIVES To make a retrospective analysis of the synthesis of antibodies to the MOMPS and LPS antigens of Chlamydia pneumoniae in patients with occlusive disease of the peripheral arteries (ODPA) and multiple sclerosis (MS). PATIENTS AND METHODS We studied 190 samples of plasma from patients included in the following groups: group 1:66 samples from 66(More)