Science, Том 134John Michels (Journalist) American Association for the Advancement of Science, 1961 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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... sample incorporated in the feedback loop of the excitation oscil- lator . The reference sample and the analytical sample are located adjacent to each other and are excited by the same radio - frequency and modulation fields . The magnet ...
... sample incorporated in the feedback loop of the excitation oscil- lator . The reference sample and the analytical sample are located adjacent to each other and are excited by the same radio - frequency and modulation fields . The magnet ...
Стр. 34
... sample . In the newer commercial instruments the pulse length and repetition rate are easily varied , and this provides a convenient means of selecting a wide range of exposures . A series of graded exposures for a given sample is ...
... sample . In the newer commercial instruments the pulse length and repetition rate are easily varied , and this provides a convenient means of selecting a wide range of exposures . A series of graded exposures for a given sample is ...
Стр.
... sample , one can obtain reliable samples . However , the number of impurities and matrices that are of interest is so great that the preparation of standard samples , even with radioactive tracers , is a formidable undertaking . graphic ...
... sample , one can obtain reliable samples . However , the number of impurities and matrices that are of interest is so great that the preparation of standard samples , even with radioactive tracers , is a formidable undertaking . graphic ...
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Millipore | 640 |
DETERMINATION | 654 |
Particles containing lead in both soluble | 672 |
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