Science, Том 119John Michels (Journalist) American Association for the Advancement of Science, 1883 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. |
Результаты поиска по книге
Результаты 1 – 3 из 43
Стр. 141
... isotopic composition with age , and the data and precision of analysis thus implied that the mean isotopic composition of atmos- pheric carbon dioxide has not varied by more than about 0.2 percent during the last 25,000 years and in ...
... isotopic composition with age , and the data and precision of analysis thus implied that the mean isotopic composition of atmos- pheric carbon dioxide has not varied by more than about 0.2 percent during the last 25,000 years and in ...
Стр. 142
... isotopic composition of average marine limestone . variations is the fact that the variations are extremely small and show no systematic trend with time . This observation does not hold for the first 150 years of growth where a steady ...
... isotopic composition of average marine limestone . variations is the fact that the variations are extremely small and show no systematic trend with time . This observation does not hold for the first 150 years of growth where a steady ...
Стр. 143
... isotopes ( 1 ) and recent work on the isotopic composition of carbon from various thermal areas ( unpublished ) in- dicate that its composition lies somewhere between that of limestone ( 0 per mil ) and igneous rock car- bon ( -25 per ...
... isotopes ( 1 ) and recent work on the isotopic composition of carbon from various thermal areas ( unpublished ) in- dicate that its composition lies somewhere between that of limestone ( 0 per mil ) and igneous rock car- bon ( -25 per ...
Другие издания - Просмотреть все
Часто встречающиеся слова и выражения
AAAS acid activity Agriculture American amino acids animals Association Atomic Energy awarded Biochemistry biological Bureau California Cancer carbon cells Center chairman Chem chemical chemistry College Committee Conference cortisone Department Dept director discussion dose effect electron engineering enzyme experimental experiments fellowships field Foundation gamma rays Geological graphite Harvard Health Illus industrial investigation irradiation isatin isotopic Laboratory material measurements Medical meeting ment metabolism method mice National neutron nitrogen nuclear nucleic acid observed obtained organization papers percent phototube physics Piltdown plants present president problems production professor protein radiation radio radioactive rats reactor received recent reported samples School of Medicine Science scientific scientists Section sessions Society solar solution specific STANFORD STANFORD UNIVERSITY structure sulfaguanidine symposium Table temperature thorium tion tissue triple response triuret U.S. Geological Survey Univ University uranium versity virus Washington WBNS x-ray York