Hypomagnesemia - Homeostasis. 1  Magnesium is abundant in nature. 2  The body contains 21â28 grams of magnesium (0.864â1.152 mol). 3  In terms of serum magnesium, the majority is bound to chelators, including ATP, ADP, proteins and citrate. 4  The kidneys regulate the serum magnesium.
Beijing Capital International Airport (PEK) is Asiaâs busiest airport in terms of passenger traffic and also one of the worldâs busiest airports.eijing Capital International Airport (PEK) is Asiaâs busiest airport in terms of passenger traffic and also one of the worldâs busiest airports.
The airport's IATA Airport code, PEK, is based on the city's former romanized name, Peking. Beijing Capital International Airport is the main hub for Air China, the flag carrier of the People's Republic of China, which flies to around 120 destinations (excluding cargo) from Beijing.Hainan and China Southern Airlines also use the airport as their hub.eijing Capital International Airport is served by the Airport Express Line of the Beijing Subway. The 28.1 km (17.5 mi) line runs from Terminal 3 to Terminal 2 and then to the city with stops at Sanyuanqiao and Dongzhimen. The line opened on 19 July 2008, in time for the 2008 Olympics.