Oxygen Evolution in Photosynthesis**Supported in part by grants from the Atomic Energy Commission, Contract # AT(II-1)-3326 and the National Science Foundation, Contract # NSF-C705.

1975 ◽  
pp. 387-412 ◽  
Author(s):  
Pierre Joliot ◽  
Bessel Kok
Keyword(s):  
Oxygen Evolution ◽  
National Science Foundation ◽  
Atomic Energy Commission ◽  
Atomic Energy ◽  
National Science

scholarly journals Yale Natural Radiocarbon Measurements VII

Radiocarbon ◽  
1962 ◽  
Vol 4 ◽  
pp. 250-262 ◽  
Author(s):  
Minze Stuiver ◽  
Edward S. Deevey
Keyword(s):  
Half Life ◽  
National Science Foundation ◽  
Technical Assistance ◽  
Atomic Energy Commission ◽  
Complete Information ◽  
Atomic Energy ◽  
National Science

The following list includes many of the measurements made since publication of Yale VI, but many are withheld pending receipt of more complete information or additional samples. We report dates in terms of the Libby half life of C14, 5570 ± 30 yr; geochemical measurements, when normalized for C13content, are given as δ in parts per mil, as described in Yale VI. As before, we acknowledge the technical assistance of George Young, Jonathan King, Sheldon Nankin, and now Carolyn Haupt who has also joined our staff. Our work has been supported by the National Science Foundation, under grants G-19080 to Stuiver and G-19335 to Deevey, and by the U. S. Atomic Energy Commission under contract AT (30–1)–2652.

scholarly journals Yale Natural Radiocarbon Measurements IX

Radiocarbon ◽  
1969 ◽  
Vol 11 (2) ◽  
pp. 545-658 ◽  
Author(s):  
Minze Stuiver
Keyword(s):  
Tree Ring ◽  
Half Life ◽  
National Science Foundation ◽  
Technical Assistance ◽  
Atomic Energy Commission ◽  
Atomic Energy ◽  
Major Portion ◽  
National Science ◽  
Standard Deviations

The present list represents a major portion of the samples measured since publication of the last date list in 1963. As in previous lists, dates are reported in terms of the 5568 yr half-life. Infinite dates are reported as beyond a limit equal to 2σ above background. Nearly all of the samples were measured in one of three quartz counters with backgrounds of 0.7 to 1.2 cpm per liter of effective counting volume at working pressures of about two atmospheres. The age errors quoted are based only on the standard deviations in counting rates of sample and standards.The various C14 projects of the Radiocarbon Laboratory have been supported by the National Science Foundation, Grants GP 4879 and GA 1157; the tree ring research has been supported by the Atomic Energy Commission under contract AT (30-1) 2652. Technical assistance has been provided by Carolyn H. Morgan and Terry C. Eisensmith.

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