Mass Spectrometric 14C and U-Th Measurements in Coral
نویسندگان
چکیده
منابع مشابه
Online mass spectrometric aerosol measurements
Online mass spectrometric aerosol measurements during the MINOS campaign (Crete, August 2001) J. Schneider , S. Borrmann , A. G. Wollny , M. Bläsner, N. Mihalopoulos, K. Oikonomou , J. Sciare, A. Teller, Z. Levin, and D. R. Worsnop Cloud Physics and Chemistry Dept., Max Planck Institute for Chemistry, Mainz, Germany Institute for Atmospheric Physics, Johannes Gutenberg University, Mainz, German...
متن کاملCaribbean sclerosponge radiocarbon measurements re-interpreted in terms of U/Th age models
Previously unpublished AMS radiocarbon measurements of a sclerosponge from tongue of the ocean (TOTO), Bahamas, as well as preliminary data from an investigation of the radiocarbon records of sclerosponges living at different depths in the adjacent Bahamas basin, Exuma Sound, are interpreted in terms of U-series age models. The data are compared to an existing Caribbean sclerosponge radiocarbon...
متن کاملThe role of general metabolites in the biosynthesis of natural products. IV. Incorporation of U-14C ribose and U-14C fructose in marrubiin terpene.
Min.mg konstant. Für die Aktivität des aus den Wurzeln erhaltenen Digipurpurogenins berechnet sich ein Wert von etwa 4200 Imp./Min. gleich 3,5-10"2% der eingesetzten Aktivität. Für das gesamte Digipurpurogenin ergibt sich damit eine Einbaurate von etwa 0,1 Prozent. Als weitere Metaboliten wurden in den Blättern nach Hydrolyse Digitoxigenin und Gitoxigenin nachgewiesen, während diese Substanzen ...
متن کاملGas-chromatographic Mass-spectrometric Detection
Cystathionine has been reported to undergo enzymatic changes leading to the formation of seven membered cyclic products (Ricci, G., Santoro, L., Achilli, M., Matarese, R. M., Nardini, M., and Cavallini, D. (1983) J. Biol. Chem. 258, 10511-10517; Cavallini, D., Costa, M., Pensa, B., and Coccia, R. (1985) Biochem. Int. 10, 641-646). Gas-chromatographic and mass-spectrometric evidence reported in...
متن کاملTh(IV)/U(VI) Sorption on Modified SBA–15 Mesoporous Materials in Fixed–Bed Column
The sorption of thorium and uranium ions by functionalized SBA–15 mesoporous silica materials with Schiff base ligating groups N–propylsalicylaldimine (SBA/SA) and ethylenediaminepropylesalicylaldimine (SBA/EnSA) from aqueous solution was investigated in fixed-bed column method. The TEMPeffect of pH, sample solution volume, and the column design parameters such as sample and eluent flow rat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Radiocarbon
سال: 1992
ISSN: 0033-8222,1945-5755
DOI: 10.1017/s003382220006389x