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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... frequency . Occasionally the amplitude of the discharge decreased or increased with heating and returned to the nor- mal 1 or 2 min after cessation of heat- ing without any change in frequency . This change of amplitude is thought to be ...
... frequency . Occasionally the amplitude of the discharge decreased or increased with heating and returned to the nor- mal 1 or 2 min after cessation of heat- ing without any change in frequency . This change of amplitude is thought to be ...
Стр. 564
... frequency of ultrasound scattered in the moving blood . High frequency ( 5 Mcy / sec ) sound is beamed diagonally into the blood stream where a part of the incident sound is scattered by the particulate components of blood to the ...
... frequency of ultrasound scattered in the moving blood . High frequency ( 5 Mcy / sec ) sound is beamed diagonally into the blood stream where a part of the incident sound is scattered by the particulate components of blood to the ...
Стр. 2
... frequency for intermittent light . An extensive literature demonstrates that flicker - fusion frequency is lowered in many cases of dysfunction of the central nervous system . It is also well established that flicker - fusion frequency ...
... frequency for intermittent light . An extensive literature demonstrates that flicker - fusion frequency is lowered in many cases of dysfunction of the central nervous system . It is also well established that flicker - fusion frequency ...
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Millipore | 640 |
DETERMINATION | 654 |
Particles containing lead in both soluble | 672 |
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