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In page He Yizhen:

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From 1952, He founded and worked at the Institute of Metal Research at the Chinese Academy of Sciences.[2] Her research focused on improving the production rate of China's nascent steel industry through the application of spectroscopy to alloy steel and slag analysis in steel industry and solved issues in steel production.[citation needed] She published two representative papers: "Effect of Microstructure of Steel on Spectral Analysis"[3] and "Cup Electrode Solution Arc Method for Spectral Analysis of Open Hearth Slag".[4]