ScienceJohn Michels (Journalist) 1947 |
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Стр. 222
... possible margin attributable to errors of measurement . Two world wars and a pro- tracted depression cut deeply into the resources that would otherwise have been devoted to plant extension , new machines , public works , and homes . It ...
... possible margin attributable to errors of measurement . Two world wars and a pro- tracted depression cut deeply into the resources that would otherwise have been devoted to plant extension , new machines , public works , and homes . It ...
Стр. 350
... possible to study the chemical properties of these elements by the tracer technique . In the meantime it has been possible to produce nep- tunium and plutonium in weighable amounts in the chain - reacting piles . The isotopes which have ...
... possible to study the chemical properties of these elements by the tracer technique . In the meantime it has been possible to produce nep- tunium and plutonium in weighable amounts in the chain - reacting piles . The isotopes which have ...
Стр. 354
... possible . For example , the synthesis of radioactive penicillin or streptomycin might give rise to a method for investigating the mechan- isms by which these great substances operate . The mechanism of action of antibodies might also ...
... possible . For example , the synthesis of radioactive penicillin or streptomycin might give rise to a method for investigating the mechan- isms by which these great substances operate . The mechanism of action of antibodies might also ...
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AAAS acid activity administration American animals application appointed Association atomic awarded barbiturate biological blood cancer carbon cells cent centrioles chairman chemical chemistry Chicago chromosomes clinical College Commission Committee concentration Department director disease Division Edison effect electrical energy engineering enzyme estrone experimental experiments field Foundation glycerides grams Harlow Shapley Illustrated inactivation increase industrial injection Institute investigation isotopes Kirtley F Laboratory liver material Medical Medicine meeting ment method mice mustard gas National neutrons normal nutrition observed obtained operation organization patients penicillin period physical physiology pipette plants plutonium possible present president problems production professor protein radiation radioactive rats reactions record Roger Adams sample School Science scientific scientists Service smegma Society sodium solution specific stanine streptomycin subtilin technical temperature tests thermal neutrons thiamine tion tissue treatment tube tumors University uranium vitamin Washington York zirconium