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Keith A. Kvenvolden
Researcher at Ames Research Center
Publications - 42
Citations - 2527
Keith A. Kvenvolden is an academic researcher from Ames Research Center. The author has contributed to research in topics: Amino acid & Murchison meteorite. The author has an hindex of 23, co-authored 42 publications receiving 2459 citations.
Papers
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Journal ArticleDOI
Evidence for extraterrestrial amino-acids and hydrocarbons in the Murchison meteorite.
Keith A. Kvenvolden,James G. Lawless,Katherine Pering,Etta Peterson,Jose Flores,Cyril Ponnamperuma,Isaac R. Kaplan,Carleton B. Moore +7 more
TL;DR: Organic molecules found in meteorites seem to have been formed before the meteorites reached Earth, according to new research.
Journal ArticleDOI
Nonprotein Amino Acids in the Murchison Meteorite
TL;DR: Tentative evidence is presented for the presence of N-methylalanine, N-ethylglycine, beta-aminoisobutyric acid, and norvaline that appear to be extraterrestrial in origin and may provide new evidence for the hypothesis of chemical evolution.
Book ChapterDOI
Abstracts of Contributed Papers
Richard C. Henry,J. E. Hesser,W. McClintock,J. Audouze,David N. Schramm,T. P. Kohman,J. M. Huey,G. A. Cowan,B. D. Donn,E. W. Chappelle,W. A. Payne,L. J. Stief,James G. Lawless,Etta Peterson,Keith A. Kvenvolden,G. Crozaz,D. Burnett,R. Walker,Stanton J. Peale,L. Husain,O. A. Schaeffer,L. D. Nguyen,G. Puil,M. de Saint Simon,Y. Yokoyama,P. M. Millman,Donald E. Brownlee,P. W. Hodge,T. Grjebine,Marvin W. Rowe,J. M. Herndon,D. E. Watson,E. E. Larson,William V. Boynton,Roman A. Schmitt,N. Carleton,W. Traub +36 more
TL;DR: The strength of the K line of singly ionized calcium has been measured for several hundred A-type stars within a few hundred parsecs of the Sun and for the A stars in several galactic star clusters as mentioned in this paper.
Journal ArticleDOI
Monocarboxylic Acids in Murray and Murchison Carbonaceous Meteorites
TL;DR: In this article, the distribution of amino acids and hydrocarbons in two C2 carbonaceous chondrites, the Murray and the Murchison, was found to be consistent with non-biological, chemical synthesis.
Journal ArticleDOI
Racemization of Amino Acids in Bones
TL;DR: In this article, the order of racemization rates of amino acids in bone is aspartic acid>alanine=glutamic acid>isoleucine≅leucine.