Complex sentence: She began as an instructor and assistant professor of chemistry in Baton Rouge (1954-1958), moving up the academic ranks to eventually become the Boyd Professor of Chemistry at New Orleans (1974-1978).
Split into simpler sentences: She began as an instructor and assistant professor of chemistry in Baton Rouge (1954-1958). She moved up the academic ranks to eventually become the Boyd Professor of Chemistry at New Orleans (1974-1978).