American Philosophical Society
Member History

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41Name:  Dr. Sheila E. Widnall
 Institution:  Massachusetts Institute of Technology
 Year Elected:  2000
 Class:  1. Mathematical and Physical Sciences
 Subdivision:  103. Engineering
 Residency:  Resident
 Living? :   Living
 Birth Date:  1938
   
 
Sheila Widnall has been a trustee of the Carnegie Corporation and vice chair of its board, a consultant to the MacArthur Foundation, a director of the Aerospace Corporation, Draper Laboratories, ANSER Corporation and Chemical Fabrics Incorporated, a trustee of the Boston Museum of Science, and a member of the Council of the Smithsonian Institution of Washington. She was a member of the Carnegie Commission on Science, Technology and Government and is a past president of the American Association for the Advancement of Science and a director of the Atlantic Council. Dr. Widnall's research activities in fluid dynamics have included the following: boundary layer stability; unsteady hydrodynamic loads on fully wetted and supercavitating hydrofoils of finite span; unsteady lifting-surface theory; unsteady air forces on oscillating cylinders in subsonic and supersonic flow; unsteady leading-edge vortex separation from slender delta wings; tip-vortex aerodynamics; helicopter noise; aerodynamics of high-speed ground transportation vehicles; vortex stability; aircraft-wake studies; turbulence; and transition. Dr. Widnall earned her Ph.D. from the Massachusetts Institute of Technology in 1964 and has taught there for over 40 years. From 1979-90 she directed the Fluid Dynamics Research Laboratory and in 1986 was named Abby Rockefeller Mauze Professor of Aeronautics & Astronautics. She currently holds the title of Institute Professor at M.I.T.
 
42Name:  Dr. Jean D. Wilson
 Institution:  University of Texas Southwestern Medical Center
 Year Elected:  2000
 Class:  2. Biological Sciences
 Subdivision:  204. Medicine, Surgery, Pathology and Immunology
 Residency:  Resident
 Living? :   Deceased
 Birth Date:  1932
 Death Date:  June 13, 2021
   
 
Jean Wilson received an M.D. at the University of Texas Southwestern Medical Center in 1955 and joined its faculty in 1960. He served as Chief of the Division of Endocrinology and Metabolism from 1988-95 and is currently Charles Cameron Sprague Distinguished Chair in Biomedical Science and Professor of Internal Medicine. He is also a Professorial Fellow in the Department of Zoology at the University of Melbourne, Australia. He is the recipient of the Ernst Oppenheimer Award and the Fred Conrad Koch Award of the Endocrine Society, the Amory Prize of the American Academy of Arts & Sciences, the Henry Dale Medal of the Society for Endocrinology and the Kober Medal of the Association of American Physicians. He is a member of the American Academy of Arts & Sciences and the National Academy of Sciences and has served as president of the Association of American Physicians, the American Society for Clinical Investigation and the Endocrine Society. He discovered a new hormone in 1967 when he and his colleagues showed that the male sex steroid testosterone can be converted to a closely related but more potent hormone dihydrotestosterone by 5a-reductase, an enzyme predominantly located in target tissues. Through experiments in a variety of species he established a bihormonal theory of male sexual differentiation, namely that testosterone controls the development of the internal urogenital tract and that dihydrotestosterone controls the prostate gland and external genitalia. This work has had important clinical ramifications in that it made possible the elucidation of the underlying mechanisms responsible for several syndromes of abnormal sexual development and understanding of the role of dihydrotestosterone in controlling the growth of the prostate gland in man and animals. A direct consequence of these fundamental studies was the development of drugs to inhibit the conversion of testosterone to dihydrotestosterone, an approach that has been applied to the treatment of benign prostatic hyperplasia and male pattern baldness. He was elected a member of the American Philosophical Society in 2000. He died on June 13, 2021.
 
Election Year
2000[X]
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