Science, Том 218John Michels (Journalist) American Association for the Advancement of Science, 1982 Since Jan. 1901 the official proceedings and most of the papers of the American Association for the Advancement of Science have been included in Science. |
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Стр. 249
... tion process ; estimates of the sampling efficiency for certain precharged organic species have been as high as 25 ... tion , the latter reflected in the fragmenta- tion pattern . While detailed gas - phase fragmentation chemistry ...
... tion process ; estimates of the sampling efficiency for certain precharged organic species have been as high as 25 ... tion , the latter reflected in the fragmenta- tion pattern . While detailed gas - phase fragmentation chemistry ...
Стр. 250
... tion of the sample ( 30 , 31 ) . For example , the PD and SIMS spectra of nucleosides are virtually superimposable ( 32 , 33 ) . These similarities are explicable on the basis of a few dominant mechanisms for ion formation and a single ...
... tion of the sample ( 30 , 31 ) . For example , the PD and SIMS spectra of nucleosides are virtually superimposable ( 32 , 33 ) . These similarities are explicable on the basis of a few dominant mechanisms for ion formation and a single ...
Стр. 698
... tion of session number and at retest , 3 and 10 weeks after the end of training . Percentages ( right ordinate ) were calculat- ed under the assumption that observers would have an equal bias for responding " same " or " different " ( 8 ) ...
... tion of session number and at retest , 3 and 10 weeks after the end of training . Percentages ( right ordinate ) were calculat- ed under the assumption that observers would have an equal bias for responding " same " or " different " ( 8 ) ...
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