On this day, 31 years ago, July 29, 1994 (June 21, 1994 in the lunar calendar), British chemist and Nobel Prize winner Dorothy Croft Hodgkin passed away. DorothyCrowfootHodgkin(1910.5.12-1994.7.29) was a British female chemist who won the 1964 Nobel Prize in Chemistry. Born in Cairo on May 12, 1910. She studied at Somerville College, Oxford University, and after graduation, worked at Cambridge University (1932 - 1934) to study and determine the structure of steroids, pepsin and vitamin B. He returned to Oxford University to teach chemistry in 1934, became a professor in 1960, and worked at Oxford University for 33 years. In 1970, he went to Bristol University as honorary president. Elected to the Royal Society in 1947. Hodgkin is mainly engaged in structural chemistry. Before 1932, X-ray analyzers were limited to verifying the results of chemical analysis, but Hodgkin developed X-ray analysis technology into a very useful analytical method. While at Cambridge University, she was the first to correctly determine the structure of complex organic macromolecules using X-ray crystallography. After returning to Oxford University in 1934, he studied many compounds with physiological effects and made the first X-ray diffraction pattern of a protein. The structure of penicillin was successfully determined for the first time in 1949. The structure of vitamin B was determined in 1957. Hodgkin won the 1964 Nobel Prize in Chemistry for determining the basic structure of biochemical compounds used to fight pernicious anemia. Received the British Medal of Merit in 1965. Comments: Many chemists are women. They work meticulously, diligently and deserve respect.