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. 247
... methods are in use , but in general desorption is achieved by particle or photon bombardment of the sample and the mass spectra obtained by different methods are fundamentally similar . Desorption ionization techniques have been used to ...
... methods are in use , but in general desorption is achieved by particle or photon bombardment of the sample and the mass spectra obtained by different methods are fundamentally similar . Desorption ionization techniques have been used to ...
Стр. 249
... methods under discussion . Choices are available with respect to the type of ion generated to represent the intact ... methods are not " soft " ionization methods in the sense of minimizing fragmentation . Rather , they tend to ...
... methods under discussion . Choices are available with respect to the type of ion generated to represent the intact ... methods are not " soft " ionization methods in the sense of minimizing fragmentation . Rather , they tend to ...
Стр. 352
... methods are used ( 1-8 ) , sequences frequently become reiterated and rearranged . The transposition reaction apparently requires the production of an enzyme , the P element transposase , not normally found in the recipient . Thus ...
... methods are used ( 1-8 ) , sequences frequently become reiterated and rearranged . The transposition reaction apparently requires the production of an enzyme , the P element transposase , not normally found in the recipient . Thus ...
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