ScienceJohn Michels (Journalist) 1959 |
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Стр. 274
... Acid Abstract . Various purification procedures for folic acid were investigated . The criteria of purity were a negative BrattonMarshall test and the absence of fluorescent spots on paper chromatograms . Since no method provided a pure ...
... Acid Abstract . Various purification procedures for folic acid were investigated . The criteria of purity were a negative BrattonMarshall test and the absence of fluorescent spots on paper chromatograms . Since no method provided a pure ...
Стр. 602
... acid ( folacin or pteroylglutamic acid . See Fig . 1. ) It has been demonstrated that in bacteria which are inhibited by sulfanilamide , the formation of folic acid and its derivatives is prevented . The enzyme system which makes this ...
... acid ( folacin or pteroylglutamic acid . See Fig . 1. ) It has been demonstrated that in bacteria which are inhibited by sulfanilamide , the formation of folic acid and its derivatives is prevented . The enzyme system which makes this ...
Стр. 897
... acid ( 10 g / 1000 ml ) , measured after 3 weeks of treatment . Height is expressed as percentage of that of ... acid ( 45 ) Indoleacetic acid ( 30 ) B - Naphthoxyacetic acid ( 30 ) a - O - Chlorophenoxyacetic acid ( 30 ) a - O ...
... acid ( 10 g / 1000 ml ) , measured after 3 weeks of treatment . Height is expressed as percentage of that of ... acid ( 45 ) Indoleacetic acid ( 30 ) B - Naphthoxyacetic acid ( 30 ) a - O - Chlorophenoxyacetic acid ( 30 ) a - O ...
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172 | 172 |
Speed versatility and convenience in measuring | 219 |
Volume 10 1959 | 291 |
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AAAS acetylcholine acid activity American amino acids ammonia animals application areas Association Atomic basic behavior biochemical biological California carnitine cells Center Chem chemical chemistry Chicago citron cloud College Colorimeters Committee Council crystals culture Department Dept director effects electron ence energy Engineering enzyme experience field folic acid genetic glycine gram hemoglobin hydroxyproline ical Institute instruments International laboratory Little America measurements mechanism Medical ment methemoglobin microscope mitochondria Model National National Science Foundation nictitating membrane nuclear nuclei observed operation optical organic papers percent Ph.D physics plant present president problems protein protozoa radiation range References and Notes Ruth Benedict samples School Science scientific scientists Society soil Soviet specific surface Technology temperature theory tion tissue ture United Univ University volume Washington World Data Center York