Search Results - (Author, Cooperation:S. Pizzarello)
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1Latest Papers from Table of Contents or Articles in PressP. Jenniskens ; M. D. Fries ; Q. Z. Yin ; M. Zolensky ; A. N. Krot ; S. A. Sandford ; D. Sears ; R. Beauford ; D. S. Ebel ; J. M. Friedrich ; K. Nagashima ; J. Wimpenny ; A. Yamakawa ; K. Nishiizumi ; Y. Hamajima ; M. W. Caffee ; K. C. Welten ; M. Laubenstein ; A. M. Davis ; S. B. Simon ; P. R. Heck ; E. D. Young ; I. E. Kohl ; M. H. Thiemens ; M. H. Nunn ; T. Mikouchi ; K. Hagiya ; K. Ohsumi ; T. A. Cahill ; J. A. Lawton ; D. Barnes ; A. Steele ; P. Rochette ; K. L. Verosub ; J. Gattacceca ; G. Cooper ; D. P. Glavin ; A. S. Burton ; J. P. Dworkin ; J. E. Elsila ; S. Pizzarello ; R. Ogliore ; P. Schmitt-Kopplin ; M. Harir ; N. Hertkorn ; A. Verchovsky ; M. Grady ; K. Nagao ; R. Okazaki ; H. Takechi ; T. Hiroi ; K. Smith ; E. A. Silber ; P. G. Brown ; J. Albers ; D. Klotz ; M. Hankey ; R. Matson ; J. A. Fries ; R. J. Walker ; I. Puchtel ; C. T. Lee ; M. E. Erdman ; G. R. Eppich ; S. Roeske ; Z. Gabelica ; M. Lerche ; M. Nuevo ; B. Girten ; S. P. Worden
American Association for the Advancement of Science (AAAS)
Published 2012Staff ViewPublication Date: 2012-12-22Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
2Articles: DFG German National LicensesStaff View
ISSN: 0003-2697Keywords: [abr] ET; ethanethiol ; [abr] MERC; β-mercaptoethanol ; [abr] MT; methanethiol ; [abr] OPA; o-phthalaldehydeSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyChemistry and PharmacologyType of Medium: Electronic ResourceURL: -
3Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [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 ResourceURL: -
4Articles: DFG German National LicensesStaff View
ISSN: 0003-2697Keywords: [abr] ET; ethanethiol ; [abr] MERC; β-mercaptoethanol ; [abr] MT; methanethiol ; [abr] OPA; o-phthalaldehydeSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyChemistry and PharmacologyType of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 0003-2697Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyChemistry and PharmacologyType of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 0273-1177Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsPhysicsType of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesStaff View
ISSN: 1432-1432Keywords: Amino acids ; Meteorites ; Chemical evolution ; Leucine isomers ; Amino acid analysis ; Carbonaceous chondriteSource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: 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 ResourceURL: -
8Articles: DFG German National LicensesEpstein, S. ; Krishnamurthy, R. V. ; Cronin, J. R. ; Pizzarello, S. ; Yuen, G. U.
[s.l.] : Nature Publishing Group
Published 1987Staff ViewISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [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 ResourceURL: