During awake consciousness, the brain intrinsically maintains a dynamical state in which it can coordinate complex responses to sensory input.How the brain reaches this state spontaneously is not known.General anesthesia provides a unique opportunity to examine how the human brain recovers its functional capabilities after profound unconsciousness.
Phenological events are good indicators of the effects of climate change, since phenological phases are sensitive to changes in environmental conditions.Although several national phenological networks monitor the phenology of different plant species, direct observations can only be conducted on individual trees, which cannot be easily extended over
Background: The protease-antiprotease hypothesis proposes that inflammatory cells and oxidative stress in chronic obstructive pulmonary disease (COPD) produce increased levels of proteolytic enzymes (neutrophil elastase, matrix metalloproteinases [MMP]) which contribute to destruction of parenchyma resulting in progressive decline in forced expirat