is the recipient of 14 U.S. patents and was recently recognized as one
of the 100 most distinguished African American scientists and engineers
of the 20th Century.
He started with NASA in 1966 in support
of NASA's manned space flight initiatives. He pioneered the development
of the ingredients ubiquitous in all cellular material. Later, he developed
techniques that are still widely used for the detection of bacteria in
urine, blood, spinal fluids, drinking water and foods.
In 1977, Chappelle turned his research
efforts toward the remote sensing of vegetation health through laser-induced
fluorescence (LIF). Working with scientists at the Beltsville Agricultural
Research Center, he advanced the development of LIF as a sensitive means
of detecting plant stress.
Chappelle received a bachelor's of
science degree in biochemistry from University of California at Berkley.
He earned his master's of science degree, also in biochemistry, from University
of Washington in Seattle and performed post-graduate work at Stanford University
in Palo Alto, Calif.
Chappelle is a member of the American
Chemical Society, the American Society of Biochemistry and Molecular Biology,
the American Society of Photobiology, the American Society of Microbiology,
and the American Society of Black Chemists. Throughout his career, he has
continued to mentor talented minority high school and college students
in his laboratories.
Biochemist, photobiologist, astrochemist
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