Results 261 to 270 of about 18,004 (298)
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In Vitro Actomyosin Motility in Deuterium Oxide
2003Actin filament velocities in an in vitro motility assay system were measured both in heavy water (deuterium oxide, D2O) and water (H2O) to examine the effect of D2O on the actomyosin interaction. The dependence of the sliding velocity on pD of the D2O assay solution showed a broad pD optimum of around pD 8.5 which resembled the broad pH optimum (pH 8.5)
Shigeru, Chaen +3 more
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Nucleic Acids in Deuterium Oxide Solution
Nature, 1961Observations on the infrared spectra of certain nucleosides led to the conclusion that the specific pairings of cytosineguanine and adenine-uracil generally postulated in nucleic acid structures involve proton transfer from uracil to guanine to adenine or cytosine, and that such pairings cause stong absorptions in the viciniiy of 1710 cm/sup -1 ...
Y. KYOGOKU +3 more
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ACID‐BASE STUDIES WITH DEUTERIUM OXIDE*
Annals of the New York Academy of Sciences, 1960A detailed treatment is given of recent developments in the field of acid-base studies, with emphasis on the particular contributions of studies in D/ sub 2/0 to problems of acidbase catalysis. Discussion is mostly restricted to acid catalysis and is given in terms of the bimolecular mechanisms. Rate laws are given in concentration units.
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GROWTH OF AZOTOBACTER IN DEUTERIUM OXIDE
Journal of Bacteriology, 1962Johnstone , D. B. (University of Vermont, Burlington). Growth of Azotobacter in deuterium oxide. J. Bacteriol. 83: 867–870. 1962.—To the small list of bacteria that are reported to have been cultured in fully deuterated media can be added Azotobacter agilis
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The rate of vaporization of deuterium oxide
Chemical Engineering Science, 1965Abstract The rate of vaporization of deuterium oxide was measured in the same apparatus used with ordinary water and described in an earlier paper. The experimental method is based on measurement of the pressure rise in a closed system during vaporization while simultaneously measuring the surface temperature.
H.D. Chu, L.J. Delaney, L.C. Eagleton
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THE EFFECTS OF DEUTERIUM OXIDE ON CERTAIN MICROORGANISMS*
Annals of the New York Academy of Sciences, 1960The growth of several strains of E. coli and B. subtilis was inhibited by the presence of D/sub 2/O; the degree of inhibition exhibited by each strain was specific. The addition of 0.5% NaC1 to the D/sub 2/O media decreased the inhibition of growth. A deuterium-resistant mutant was obtained from one strain of E. coll.
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Gelatin gels in deuterium oxide
Food Hydrocolloids, 2003Abstract Gelatin gels formed in D2O have greater rigidity than gels of equal concentration formed in H2O. In D2O the junction zones (regions of collagen triple helix structure) were smaller (i.e. involved fewer amino acid residues) than in H2O. The contribution per amino acid residue to the free energy of formation of junction zones was −0.51 kJ/mol ...
David Oakenfull, Alan Scott
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Hydrophobic interaction in deuterium oxide
Australian Journal of Chemistry, 1975Methods previously used to study hydrophobic interaction in ordinary water have been used to measure the free energy of hydrophobic interaction between hydrocarbon chains in deuterium oxide at 25°: (1) Conductance measurements on micellar solutions of a series of hexadecyltrimethylammonium carboxylates give the effect of ...
DG Oakenfull, DE Fenwick
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Reactions of 3,3-dimethylbut-1-ene with deuterium oxide or deuterium over oxide catalysts
Journal of Catalysis, 1972Exchange reactions of 3,3-dimethylbut-1-ene (I) with D2O have been studied over four X-type zeolites, silica-alumina and magnesium oxide, and with D2 over some of the catalysts. The isomerization of I, in the presence of D2O or D2, to form 2,3-dimethylbut-1-ene (II) and 2,3-dimethylbut-2-ene (III) was also followed.
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DEUTERIUM EXCHANGE OF DECABORANE WITH DEUTERIUM OXIDE AND DEUTERIUM CHLORIDE
Journal of the American Chemical Society, 1958M. Frederick Hawthorne, John J. Miller
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