In healthy adults, the half-life of caffeine is 4.9 hours. In pregnant women, the half- life is 9-11 hours. In infants as well as young kids, the half-life of caffeine is longer than the adults, about 30 hours. Patients with severe liver disease, caffeine may accumulate in the liver with the half-life up to about 96 hours.
Much of North Koreaâs aviation fuel appears to come from China. In 2015, the isolated country spent $877,048 importing 1,415 tonnes of Chinese jet fuel, according to Chinese customs data - enough for North Korea to operate its fleet of largely Soviet-era military aircraft.
North Korea is an isolated, impoverished, impulsive rogue nuclear state ruled by a family that has built one of the most terrifying personality cults the world has ever seen. As result, Pyongyang doesn't have a lot of friends. The one country that North Korea can depend on is China. Beijing provides Pyongyang with much of its food and weapons â and is bound by treaty to support the North in the event of war with South Korea. China and North Korea have a reputation for being closely aligned, both militarily and ideologically.