ScienceJohn Michels (Journalist) 1954 |
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Стр. 4
... materials , moderators , and control materials . The fuel or fissionable material is essential to the operation of a reactor . For our purposes , we will con- sider uranium , thorium , and plutonium as fuels . In the strict sense ...
... materials , moderators , and control materials . The fuel or fissionable material is essential to the operation of a reactor . For our purposes , we will con- sider uranium , thorium , and plutonium as fuels . In the strict sense ...
Стр. 123
... material . The triple response has been used frequently by physiolo- gists as a measure of ethylene production by ripening fruit , by fungi , and by injured and healthy plant tis- sues . The evidence presented below suggests that when ...
... material . The triple response has been used frequently by physiolo- gists as a measure of ethylene production by ripening fruit , by fungi , and by injured and healthy plant tis- sues . The evidence presented below suggests that when ...
Стр. 271
... material for analysis was obtained in the following manner . Several grams of the colored virus were prepared from infected leaves of N. tabacum by five cycles of alternate high- and low - speed centrifuga- tion in cacodylate buffer and ...
... material for analysis was obtained in the following manner . Several grams of the colored virus were prepared from infected leaves of N. tabacum by five cycles of alternate high- and low - speed centrifuga- tion in cacodylate buffer and ...
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AAAS acid activity Agriculture alloxan American animals Association Atomic Energy awarded Biochemistry biological Bureau California Cancer carbon cells Center chairman Chem chemical chemistry College Committee concentration Conference cortisone Department Dept director discussion dose effect electron engineering enzyme experimental experiments fellowships field Foundation gamma rays Geological graphite Harvard Health Illus industrial Institute interest investigation irradiation isatin isotopic Laboratory material measurements Medical meeting ment metacinnabar method mice National neutron nitrogen nuclear nucleic acid observed obtained organization papers percent phototube physics Piltdown plants present president problems produced professor protein radiation radio radioactive rats reactor received recent reported sample saponin School of Medicine Science scientific scientists Section sessions Society solar solution specific sulfaguanidine symposium Table temperature thorium tion tissue triple response triuret U.S. Geological Survey Univ University uranium versity virus Washington WBNS x-ray York zirconium