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.
âIn the past year, the conversation to legalize the cultivation of hemp has gained momentum at the federal level, and it is only a matter of time before a farmerâs right to grow hemp is restored.â. Under federal law, hemp production is illegal, banned since 1957 because of the relation of hemp plants to marijuana. Hemp contains an insignificantly low amount of tetrahydrocannabinol, the chemical in marijuana that produces a high.