Now showing items 11-20 of 50
The conversion of guanine to hypoxanthine in rat-liver extracts
(Elsevier, 1959-11)
Crude dialyzed homogenates of rat liver convert [14C]guanine to hypoxanthine. This conversion is stimulated by the addition of ATP, ribose-5-phosphate, and DPN.H. The data presented are consistent with the idea that the ...
Infrared spectra of high polymers. VI. Polystyrene Presented in part at the American Physical Society, Philadelphia, Pennsylvania, March, 1957.
(Interscience Publishers, Inc.Wiley Periodiocals, Inc., 1958)
The infrared spectrum of polystyrene has been obtained in the region of 70 cm. −1 to 3200 cm. −1 . These data, plus Raman scattering data from the literature, are used to make a complete assignment of the normal modes of ...
Physiology of the cell surface of Neurospora ascospores. II. Interference with dye adsorption by polymyxin
(Elsevier, 1956-05)
Polymyxin B prevents the germination of ascospores of Neurospora tetrasperma with an LD50 of 3-4 p.p.m. The toxic effect of polymyxin is partially reversed by calcium and magnesium ions. The effect of polymyxin on the ...
Determination of (d, [alpha]) reaction cross-sections
(Elsevier, 1959-03)
Absolute cross-sections were determined for several (d, [alpha]) reactions. Thin targets were bombarbed by a beam of 7[middle dot]8 MeV deuterons which were collected in a Faraday cup and measured by a current integrator. ...
Chemische Analyse durch Neutronenreaktionen
(WILEY-VCH Verlag GmbH, 1958-04-07)
Die Voraussetzungen und Grenzen der Neutronen-Aktivierungsanalyse werden dargelegt. EnthÄlt eine zu analysierende Substanz Isotope mit genÜgend hohen Wirkungsquerschnitten fÜr thermische Neutronen und sind die Halbwertszeiten ...
The metabolism of Brucellae: The oxidation of succinate as a function of pH and concentration
(Elsevier, 1956-10)
The marked difference between the rates of succinate uptake and oxidation by Brucella abortus that occurs when the concentration of hydrogen ions or the substrate is grossly increased was accounted for predominantly in ...
Infrared spectrum and crystal structure of cellulose
(Interscience Publishers, Inc.Wiley Periodiocals, Inc., 1957-07)
Infrared absorption spectra of oriented cellulose fibers have been observed using polarized radiation. Natural fibers are in general too thick but swelling them in NaOH solution followed by pressing, washing, and drying ...
"Salting-out" chromatography: Empirical equations relating RF values to atomic refraction constants
(Elsevier, 1957-10)
Peptides, [alpha]-amino acids and miscellaneous organic compounds were chromatographed on filter paper using saturated ammonium sulfate solution as the developing solvent. Equations relating RF values to molecular refraction ...