Role of Frontier Orbitals in Chemical Reactions
摘要:
Investigations were performed in 14 ewes of the Polish Merino race, undergoing the second reproductive cycle. Fundamental indices of the protein and energy metabolism, levels of Ca, P, Mg, Cu, Fe and as well as vitamins A, E and C in the blood plasma and serum were determined. The analyses were carried out during the following periods of the reproductive cycle: 3 weeks before , the early and late , the culmination and close of . The levels of metabolism indices, especially those of the protein and energy metabolism, were found to vary during the studied periods of the reproductive cycle. In all the periods, low levels (during a deficiency) of Ca and Mg and a distinct deficiency of were detected. It seems therefore, necessary to work out the reference values for particular periods of the reproductive cycle.
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DOI:
10.1126/science.218.4574.747
被引量:
年份:
1982















































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