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The Duquenois–Levine test is a simple chemical color reaction test initially developed in the 1930s by Pierre Duquénois. To administer the test, a user simply has to mix the chemicals with a particle of the suspected substance; if the chemicals turn purple, this indicates the possibility of marijuana.
The gravity bong differs from water pipes and water bongs in that it does not bubble the smoke through the water. Vaporizers do not produce smoke, but the inhalation process is similar. A joint can contain from 0.4 g to well over 1 g and blunts can contain up to 3 g of cannabis, [14] while the bucket bong only uses about 0.1 to 0.3 g. [15]
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Clearance of a substance is sometimes expressed as the inverse of the time constant that describes its removal rate from the body divided by its volume of distribution (or total body water). In steady-state, it is defined as the mass generation rate of a substance (which equals the mass removal rate) divided by its concentration in the blood.
These are achieved at lower doses, because many synthetic cannabinoids are more potent than marijuana, and users are often unaware of exactly what they are getting and how potent it is. [55] For example, Δ 9 -THC has an EC 50 of 250 nM at CB 1 and 1157 nM at CB 2 , whereas PB-22 has an EC 50 of 5.1 nM at CB 1 and 37 nM at CB 2 . [ 8 ]
2012: medical marijuana legalized when Question 3 passed by 60%. [99] [100] 2016: legalized recreational marijuana when Question 4 passed by 54%. [101] Michigan: Legal to possess up to 2.5 oz (71 g) in public or 10 oz (280 g) at home Legal to possess up to 2.5 oz (71 g) Legal for recreational use up to an amount of 12 plants per household. [102
Cannabis also has a long history of being used for medicinal purposes, and as a recreational drug known by several slang terms, such as marijuana, pot or weed. Various cannabis strains have been bred, often selectively to produce high or low levels of tetrahydrocannabinol (THC), a cannabinoid and the plant's principal psychoactive constituent .
Most slang names for marijuana and hashish date to the jazz era, when it was called gauge, jive, reefer. Weed is a commonly used slang term for drug cannabis. New slang names, like trees, came into use early in the twenty-first century. [2] [3] [4]