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THC and its 11-OH-THC and THC-COOH metabolites can be detected and quantified in blood, urine, hair, oral fluid or sweat using a combination of immunoassay and chromatographic techniques as part of a drug use testing program or in a forensic investigation. [57] [58] [59] There is ongoing research to create devices capable of detecting THC in ...
A medical cannabis crop in Australia. Cannabis is a plant used in Australia for recreational, medicinal and industrial purposes. In 2022–23, 41% of Australians over the age of fourteen years had used cannabis in their lifetime and 11.5% had used cannabis in the last 12 months.
A survey in 2017 found that 27% of Israelis between the ages of 18 and 65 had consumed cannabis in the last year, up from 8.8% in 2009, [7] the highest rates of annual cannabis usage in the world, followed by Iceland and the US at 18% and 16% respectively.
A decrease of 60% means the final amount is 40% of the original (100% – 60% = 40%). A decrease of 100% means the final amount is zero (100% – 100% = 0%). In general, a change of x percent in a quantity results in a final amount that is 100 + x percent of the original amount (equivalently, (1 + 0.01 x) times the original amount).
The first private, stand-alone Care Quality Commission (CQC) registered cannabis clinic was opened by Sapphire medical in December 2019, [60] since then a number of private clinics have opened across the UK. The UK's first medical cannabis registry set up and run by Drug Science charity was launched in August 2020.
Percentages greater than 100 or less than zero are treated in the same way, e.g. 311% equals 311/100, and −27% equals −27/100. The related concept of permille or parts per thousand (ppt) has an implied denominator of 1000, while the more general parts-per notation , as in 75 parts per million (ppm), means that the proportion is 75/1,000,000.
Tuberculosis; Other names: Phthisis, phthisis pulmonalis, consumption, great white plague: Chest X-ray of a person with advanced tuberculosis: Infection in both lungs is marked by white arrow-heads, and the formation of a cavity is marked by black arrows.
Thus, complex hypotheses must predict data much better than do simple hypotheses before researchers reject the simple hypotheses. Recent advances employ information theory, a close cousin of likelihood, which uses Occam's razor in the same way. The choice of the "shortest tree" relative to a not-so-short tree under any optimality criterion ...