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.
Regional Ingredients. While North Korea has considerably less fertile farmland than South Korea, common ingredients are generally culled from local farmers or the Pacific Ocean. In the semi-fertile Hwaghae Province near the South Korean border, local ingredients include corn, rice and seafood.