J
James G. Lawless
Researcher at Ames Research Center
Publications - 52
Citations - 3182
James G. Lawless 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 27, co-authored 52 publications receiving 3063 citations.
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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.
Journal ArticleDOI
HCN: A plausible source of purines, pyrimidines and amino acids on the primitive earth
TL;DR: The observation of orotic acid and 4-aminoimidazole-5-carboxamide suggests that the contemporary biosynthetic pathways for nucleotides may have evolved from the compounds released on hydrolysis of HCN oligomers.
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
Quantification of monocarboxylic acids in the Murchison carbonaceous meteorite
James G. Lawless,George U. Yuen +1 more
TL;DR: In this paper, the abundances of straight and branched-chain isomers of the monocarboxylic acids found in the Murchison carbonaceous chondrite are determined.