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.
Beijing Capital International Airport (IATA: PEK, ICAO: ZBAA) is the main international airport serving Beijing. It is located 32 km (20 mi) northeast of Beijing's city center, in an enclave of Chaoyang District and the surroundings of that enclave in suburban Shunyi District.