Thee master clock responsible for establishing our bodies cyclic circadian rhythms and keeping all the body's cells in sync is the suprachiasmatic nucleus (SCN), a small, densely packed region of about 20,000 neurons housed in the brain's hypothalamus.
Thermal issues affect the comfort, performance and decompression stress experienced by divers. The impact varies with the timing, direction and magnitude of the thermal stress. Thermal protection can be provided by a variety of passive and active systems. Active systems should be used with particular care since they can markedly alter inert gas exchange and decompression risk.
Shipwreck explorers Jim Kennard and Dan Scoville began their initial search for the vessel in September 2008.
What was thought to be an easy shipwreck to find turned out to be more of a challenge than they expected, Kennard said. Their search did, however, lead to several new discoveries in this area of the lake.
Kennard said they found the wreck of the Nesbit Grammer in late August 2014 in more than 500 feet of water about 8 miles from the shore of Somerset, N.Y., but he was unable to share the information at that time.
Two ships, HMS Erebus and HMS Terror, were part of Sir John Franklin's doomed expedition in 1845 to find the Northwest Passage from the Atlantic Ocean to Asia.
The ships disappeared after they became locked in ice in 1846 and were missing for more than a century and a half until last month's discovery by a group of public-private searchers led by Parks Canada. It was not known until now which of the two ships had been found.
