ScienceJohn Michels (Journalist) 1948 |
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Стр. 18
... sampling procedure is of the utmost importance , and it is necessary to use discrimination in the choice of leaf samples . Most diseases have distinctive leaf symp- toms and , for any one sample , leaves should be chosen that have ...
... sampling procedure is of the utmost importance , and it is necessary to use discrimination in the choice of leaf samples . Most diseases have distinctive leaf symp- toms and , for any one sample , leaves should be chosen that have ...
Стр. 344
... samples . It is of extreme interest to note that a purified sample of streptomycin B ( trihydrochloride ) supplied by K. Folkers and R. L. Peck showed no fluorescence under similar conditions . This sample yielded an " assay " value of ...
... samples . It is of extreme interest to note that a purified sample of streptomycin B ( trihydrochloride ) supplied by K. Folkers and R. L. Peck showed no fluorescence under similar conditions . This sample yielded an " assay " value of ...
Стр. 652
... samples of various thicknesses . Consider , first , a sample of radioactive barium carbonate mounted on aluminum and counted at 36 % geometry . If one envisions the sample as made up of many thin layers , it is apparent that the ...
... samples of various thicknesses . Consider , first , a sample of radioactive barium carbonate mounted on aluminum and counted at 36 % geometry . If one envisions the sample as made up of many thin layers , it is apparent that the ...
Содержание
On the Nomenclature of the AntiRh | 27 |
Obituary | 33 |
Technical Papers | 39 |
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