ScienceJohn Michels (Journalist) 1951 |
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Стр. 8
... Evidence for the new hypothesis . The sequence of events described here is not a purely philosophical concept built up to explain a very puzzling situation , as some of the preceding hypotheses have been ; it is built on a substantial ...
... Evidence for the new hypothesis . The sequence of events described here is not a purely philosophical concept built up to explain a very puzzling situation , as some of the preceding hypotheses have been ; it is built on a substantial ...
Стр. 240
... evidence was secured that some strains mutate and others do not . The conclusion has been reached that the yellow spots occurring only occasionally , or frequently , in green tobacco mosaic strains are usually the result of ...
... evidence was secured that some strains mutate and others do not . The conclusion has been reached that the yellow spots occurring only occasionally , or frequently , in green tobacco mosaic strains are usually the result of ...
Стр. 411
... evidence by the analysis of the Sr / Ca ratio in un- altered fossils . Since Sr / Ca in the calcareous skeleton reflects Sr / Ca in the water ( Fig . 2 ) , the analysis of the Sr / Ca ratio in unaltered fossils is a valid method of ...
... evidence by the analysis of the Sr / Ca ratio in un- altered fossils . Since Sr / Ca in the calcareous skeleton reflects Sr / Ca in the water ( Fig . 2 ) , the analysis of the Sr / Ca ratio in unaltered fossils is a valid method of ...
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AAAS absorption acetone acid activity American amino acids Ammonoidea animals Annual Antabuse applied appointed Association autoxidation awarded Bentley Glass Biochem Biol biological blood Cancer cells Chem chemical Chemistry Chicago chlorophyll chloroprocaine clinical colchicine College concentration cortisone culture density Department diet director Division effect Engineering enzyme epidermis erythrocytes experimental experiments field Fraction Geology growth Health Ibid inhibition injection Institute investigation Laboratory liver material measured mechanism Medical Medicine ment metabolism method muscle National nuclear nuclei observed obtained organic oxidation penicillin physical Physiol physiology plant plasma potassium present procaine production professor rats reported samples School Science scientific scientists Sept serum Society soil solution substances Table technique temperature thiouracil tion tissue tryptophan tube tumors Univ University University of Minnesota uracil uraninite vitamin B12 y-globulin York