Search Results - (Author, Cooperation:S. Pizzarello)

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  1. 1
    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Cronin, J.R. ; Pizzarello, S. ; Gandy, W.E.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0003-2697
    Keywords:
    [abr] ET; ethanethiol ; [abr] MERC; β-mercaptoethanol ; [abr] MT; methanethiol ; [abr] OPA; o-phthalaldehyde
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Chemistry and Pharmacology
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  3. 3
    Pizzarello, S. ; Cronin, J. R.

    [s.l.] : Macmillan Magazines Ltd.
    Published 1998
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] Engel and Macko have reported that alanine indigenous to the Murchison meteorite has an l-enantiomer excess of about 33%. Furthermore, they reported very similar δ15nitrogen values for l-alanine and d-alanine; these values are quite high in ...
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  4. 4
    Cronin, J.R. ; Pizzarello, S. ; Gandy, W.E.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0003-2697
    Keywords:
    [abr] ET; ethanethiol ; [abr] MERC; β-mercaptoethanol ; [abr] MT; methanethiol ; [abr] OPA; o-phthalaldehyde
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Chemistry and Pharmacology
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  5. 5
    Cronin, J.R. ; Yuen, G.U. ; Pizzarello, S.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0003-2697
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Chemistry and Pharmacology
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  6. 6
    Cronin, J.R. ; Pizzarello, S.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0273-1177
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  7. 7
    Cronin, J. R. ; Gandy, W. E. ; Pizzarello, S.
    Springer
    Published 1981
    Staff View
    ISSN:
    1432-1432
    Keywords:
    Amino acids ; Meteorites ; Chemical evolution ; Leucine isomers ; Amino acid analysis ; Carbonaceous chondrite
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Notes:
    Summary Six of the seven chain isomers of six-carbon acyclic primaryα-amino alkanoic acids (leucine isomers) have been either identified or confirmed in hot-water extracts of the Murchison meteorite using combined gas chromatography-mass spectrometry (GC-MS) and ion exchange chromatography. 2-Amino-2-ethylbutyric acid, 2-amino-2,3-dimethylbutyric acid, pseudoleucine, and 2-methylnorvaline were positively identified by GC-MS. These amino acids have not been previously reported to occur in natural materials and may be uniquely meteoritic in origin. The presence of leucine and isoleucine (including the diastereoisomer, alloisoleucine) was confirmed. Peaks corresponding to norleucine were seen by ion-exchange and gas chromatography but characteristic mass spectra were not obtained. Theα-branched chain isomers in this series are quantitatively the most significant. These results are compared with literature data on amino acid synthesis by electrical discharge and Fischer-Tropsch-type catalysis. Neither model system produces an amino acid suite that is completely comparable to that found in the Murchison meteorite.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  8. 8
    Epstein, S. ; Krishnamurthy, R. V. ; Cronin, J. R. ; Pizzarello, S. ; Yuen, G. U.

    [s.l.] : Nature Publishing Group
    Published 1987
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] There have been previous investigations of the isotopic composition of soluble organic compounds from carbonaceous chondrites. Smith and Kaplan3 and Chang and Mack4 measured 613C values of -17 to -5%, for benzene-methanol and 5 to 25%, for water extracts respectively. Chang and Mack also examined ...
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses