ScienceJohn Michels (Journalist) 1947 |
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Стр. 95
... Sample 1 ( 1,177 cases ) . 30.24 9.30 Sample 2 ( 130 cases ) . 31.85 8.85 Difference .. 1.61 0.45 Standard error of difference . .82 Critical ratio ... 2.0- 0.58 0.8 ratios pertaining to the means are less than 2.0 , and both pertaining ...
... Sample 1 ( 1,177 cases ) . 30.24 9.30 Sample 2 ( 130 cases ) . 31.85 8.85 Difference .. 1.61 0.45 Standard error of difference . .82 Critical ratio ... 2.0- 0.58 0.8 ratios pertaining to the means are less than 2.0 , and both pertaining ...
Стр. 302
... sample of I18 from the Clinton Laboratories and prepared from it a number of identical 25 - ml . samples which were distributed to approximately 40 hospitals , uni- versities , and similar institutions using this isotope or in- terested ...
... sample of I18 from the Clinton Laboratories and prepared from it a number of identical 25 - ml . samples which were distributed to approximately 40 hospitals , uni- versities , and similar institutions using this isotope or in- terested ...
Стр. 403
... samples was corrected for changes in counter performance by reference to counts of a uranium standard which was counted at least four times alternately with each sample . The total activity of the precipitates , all of which were ...
... samples was corrected for changes in counter performance by reference to counts of a uranium standard which was counted at least four times alternately with each sample . The total activity of the precipitates , all of which were ...
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Grim J M 354 430 502 | 10 |
Sci 105 | 19 |
Plasma Accelerator Factor and Purified | 22 |
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