Pneumococcal infections are caused by Streptococcus pneumoniae, a gram-positive, catalase-negative organism commonly referred to as pneumococcus.
Blood pressure is a measure of the changing fluid pressure within the circulatory system. It varies. from a peak pressure produced by contraction of the left ventricle, to a low pressure, which is. maintained by closure of the aortic valve and elastic recoil of the arterial system. The peak.
Suddenly that rubber band snaps. The stored elastic energy has to go somewhere because it has been suddenly released. This is the principle that Reid proposes through his elastic rebound theory of earthquakes. It is a way for the stored energy to be released through a sudden action. What Makes an Elastic Rebound Possible During an Earthquake? During an earthquake, the tectonic plates of the Earth are moving relative to each other.