Publications by authors named "Maria Pfeiffer"
Classes Of Recommendation: Conditions for which there is conclusive evidence and, failing that, general agreement that a given procedure is safe and useful/effective. Conditions for which there is conflicting evidence and/or a divergence of opinion about the safety and usefulness/efficacy of a procedure. Weight or evidence/opinion in favor of the procedure.
View Article and Find Full Text PDFEnergy transitions are knowledge-intensive processes where a multitude of actors are trying to cope with inevitable knowledge gaps, surprises, and uncertainties. In this context, we focus on two techno-physical phenomena that are gaining practical relevance with the expansion of wind and geothermal energy extraction, and are surrounded by significant unknowns: wake effects and temperature plumes. Both phenomena can potentially affect the efficiency of energy production, but the extent of their impact is not yet known.
View Article and Find Full Text PDFHuman brain activity consists of different frequency bands associated with varying functions. Oscillatory activity of frontal brain regions in the theta range (4-8 Hz) is linked to cognitive processing and can be modulated by neurofeedback - a technique where participants receive real-time feedback about their brain activity and learn to modulate it. However, criticism of this technique evolved, and high heterogeneity of study designs complicates a valid evaluation of its effectiveness.
View Article and Find Full Text PDFBackground: Cardiac arrhythmias are the major cause of late sudden death in patients undergoing repair of Tetralogy of Fallot (TF).
Objective: To evaluate the occurrence of cardiac arrhythmias in children and adolescents undergoing repair of TF, and to associate them with clinical aspects and laboratory tests.
Methods: Cross-sectional study of 37 patients undergoing repair of TF at Instituto Estadual de Cardiologia Aloysio de Castro (Rio de Janeiro).