But New Madrid has experienced some big quakes in its history. Researchers have geologic evidence of several major earthquakes of around magnitude 7 and 8 striking the area over the past 4,500 years. More recently, the region experienced a series of strong quakes in 1811 and 1812. The first occurred in Arkansas on December 16, 1811, and scientistsâ best estimate for its strength is that it was a magnitude-7.7 earthquake. Six hours later, the region shook again with a similar-sized aftershock.
Unallocated space, also called free space, is defined as the unused portion of the hard drive; file slack is the unused space that is created between the end-of-file marker and the end of the hard drive cluster in which the file is stored.
(1)Department of Anaesthesia, University Hospital, Lund, Sweden. Deadspace is defined in terms of the efficiency of the lung in eliminating carbon dioxide. The airway deadspace is the volume of the airway in which gas moves chiefly by convection.The alveolar deadspace is caused by ventilation/perfusion inequalities at the alveolar level. The commonest causes of increased alveolar deadspace are airways disease--smoking, bronchitis, emphysema, and asthma.Other causes include pulmonary embolism, pulmonary hypotension, and ARDS.1)Department of Anaesthesia, University Hospital, Lund, Sweden. Deadspace is defined in terms of the efficiency of the lung in eliminating carbon dioxide. The airway deadspace is the volume of the airway in which gas moves chiefly by convection.