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.
By the mid-1930s Cannabis was regulated as a drug in every state, including 35 states that adopted the Uniform State Narcotic Drug Act. In the 1970s, many places in the United States started to abolish state laws and other local regulations that banned possession or sale of cannabis.n November 6, 2012, Colorado and Washington became the first states to legalize the sale and possession of cannabis for recreational use since the Marijuana Tax Act of 1937 when they passed Colorado Amendment 64 and Washington Initiative 502.