ScienceJohn Michels (Journalist) 1957 |
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Стр. 119
... possible to carry out a number of different tracer experiments using isotopes at much lower enrichment levels than were formerly required . For the case of C13 enriched by a factor of 1.5 over the 1.1 percent natural abundance level ...
... possible to carry out a number of different tracer experiments using isotopes at much lower enrichment levels than were formerly required . For the case of C13 enriched by a factor of 1.5 over the 1.1 percent natural abundance level ...
Стр. 549
... possible . Using existing techniques of potassium - argon age determinations combined with rubidium - strontium age measurements , it is possible at the present time to date the time of formation of mica in a great many igneous and ...
... possible . Using existing techniques of potassium - argon age determinations combined with rubidium - strontium age measurements , it is possible at the present time to date the time of formation of mica in a great many igneous and ...
Стр. 738
... possible that carbon dioxide may be as fundamental a requirement of the early embryo as oxygen " ( 39 ) . Rather than being merely a waste product of metabolism , therefore , it appears that CO2 is capable of regulating cellular ...
... possible that carbon dioxide may be as fundamental a requirement of the early embryo as oxygen " ( 39 ) . Rather than being merely a waste product of metabolism , therefore , it appears that CO2 is capable of regulating cellular ...
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First geological map of Asia 1172 | 1 |
3262 | 9 |
viii | 31 |
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Библиографические данные
| Название | Science |
| Редактор | John Michels (Journalist) |
| Соавтор | American Association for the Advancement of Science |
| Опубликована: | 1957 |
| Владелец оригинала: | Университет штата Миннесота |
| Оцифровано | 17 дек 2019 |
| Экспорт цитаты | BiBTeX EndNote RefMan |