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It is the cheapest source of industrial hydrogen, being the source of nearly 50% of the world's hydrogen. [32] The process consists of heating the gas to 700–1,100 °C (1,300–2,000 °F) in the presence of steam over a nickel catalyst. The resulting endothermic reaction forms carbon monoxide and molecular hydrogen (H 2). [33]
[47] [48] [49] By October 2017, a 2,000-km fiber line was operational between Beijing, Jinan, Hefei and Shanghai. [50] Together they constitute the world's first space-ground quantum network. [ 51 ] Up to 10 Micius/QUESS satellites are expected, [ 52 ] allowing a European–Asian quantum-encrypted network by 2020, and a global network by 2030.
Approximately 50 people were on board, consisting of SNCF technicians and, reportedly, some unauthorised guests. Eleven were killed and 37 were injured. The train was performing tests at 10 percent above the planned speed limit for the line and should have slowed from 352 km/h (219 mph) to 176 km/h (109 mph) before entering the curve.
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