Science: v.1-v.219Moses King, 1967 |
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Page 1208
... less than 200 years ; such comets are often loosely referred to as " periodic comets , " although most comets are really periodic . Forty - four periodic comets have been observed only once , 29 of them having periods of less than 9 ...
... less than 200 years ; such comets are often loosely referred to as " periodic comets , " although most comets are really periodic . Forty - four periodic comets have been observed only once , 29 of them having periods of less than 9 ...
Page 1253
... less accurate regulator gauge is used . The entire procedure takes less than 30 seconds , and twigs may be severed for at least 5 minutes with- out an increased reading . There are several sources of varia- tion in readings obtained ...
... less accurate regulator gauge is used . The entire procedure takes less than 30 seconds , and twigs may be severed for at least 5 minutes with- out an increased reading . There are several sources of varia- tion in readings obtained ...
Page 1501
... less than 1 X 10- , and a probability limit for accidental planetary impact by unsterilized fly - by or orbiting spacecraft of 3 X 10 % or less . A U.S. recommendation to relax the constraint on heat - sterilized Mars land- ers to 1 X ...
... less than 1 X 10- , and a probability limit for accidental planetary impact by unsterilized fly - by or orbiting spacecraft of 3 X 10 % or less . A U.S. recommendation to relax the constraint on heat - sterilized Mars land- ers to 1 X ...
Contents
Vol 155 No 3765 | 951 |
International Biological Program | 957 |
E M Williams | 974 |
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Academic acid acidosis actinomycin activity amino acids anaphylatoxin animals antigen apatites Applications behavior Biochem Biol biology cells centrosphere chairman Chem chemical Chemistry chloroplasts chromosomes comets concentration cytochrome density depolarization effect electron ence enzyme experience experimental fibers fraction glutamine hemocyanin hemoglobin ibid Illus increase injections instrument International kidney laboratory liquid measured mechanism Medical membrane ment metabolic method Model molecular Nalgene neutrinos normal observed obtained Olmec optical organic papers pemoline percent Ph.D phase phosphate Phys physics Physiol plasma position present problems Proc produced protein puromycin rabbit radiation reaction References and Notes renal response rhodopsin ribosomes samples San Lorenzo Tenochtitlan Science scientific scientists serum solution specific stimulus structure studies synthesis temperature thyroxine Tinodon tion tissue tive ture Univ University values York