It represents the time from the end of ventricular depolarization to the start of ventricular repolarization. ST elevation may indicate myocardial infarction or pericarditis. ST depression may indicate ischaemia.
Marijuana has been illegal for less than 1% of the time that itâs been in use. Its known uses go back further than 7,000 B.C. and it was legal as recently as when Ronald Reagan was a boy.The marijuana (hemp) plant, of course, has an incredible number of uses.arijuana has been illegal for less than 1% of the time that itâs been in use. Its known uses go back further than 7,000 B.C. and it was legal as recently as when Ronald Reagan was a boy.
The first significant cannabis regulation appeared in 1906 in Washington, D.C. California was the first to outlaw âpreparations of hemp or loco weedâ in 1913. Other states soon followed: Wyoming (1915); Texas (1919), Iowa (1923), Nevada (1923), Oregon (1923), Washington (1923), Arkansas (1923), and Nebraska (1927).ike the Harrison Act passed twenty-three years earlier, the 1937 Marijuana Act did not make possession or use of marihuana illegal, as this would violate the Tenth Amendment's limitation on federal power.