Quantitative Basis

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Gilles Ohanessian - One of the best experts on this subject based on the ideXlab platform.

  • A Quantitative Basis for a scale of Na+ affinities of organic and small biological molecules in the gas phase.
    Journal of the American Chemical Society, 1999
    Co-Authors: S. Hoyau, K. Norrman, T. B. Mcmahon, Gilles Ohanessian
    Abstract:

    High Pressure Mass Spectrometric experiments and ab initio calculations have been carried out in order to establish a series of accurate gas phase sodium ion affinities of organic molecules with a wide variety of functional groups. Ab initio calculations have also been performed on the sodium complexes of three amino acids, serine, cysteine and proline. A systematic critical evaluation of experimental and computational literature results shows that a significant number require revision. Based on comparisons with accurate experimental measurements, the ab initio procedure used is shown to yield sodium ion affinities with an accuracy of ca. 1 kcal.mol-1. This enables the construction of the first reliable table of gas phase Na+ affinities for organic and small biological molecules.

  • a Quantitative Basis for a scale of na affinities of organic and small biological molecules in the gas phase
    Journal of the American Chemical Society, 1999
    Co-Authors: S. Hoyau, K. Norrman, Terry B Mcmahon, Gilles Ohanessian
    Abstract:

    High-pressure mass spectrometric experiments and ab initio calculations have been carried out in order to establish a series of accurate gas-phase sodium ion affinities of organic molecules with a wide variety of functional groups. Ab initio calculations have also been performed on the sodium complexes of three amino acids:  serine, cysteine, and proline. A systematic critical evaluation of experimental and computational literature results shows that a significant number require revision. Based on comparisons with accurate experimental measurements, the ab initio procedure used is shown to yield sodium ion affinities with an accuracy of ca. 1 kcal·mol-1. This enables the construction of the first reliable table of gas-phase Na+ affinities for organic and small biological molecules.

S. Hoyau - One of the best experts on this subject based on the ideXlab platform.

  • A Quantitative Basis for a scale of Na+ affinities of organic and small biological molecules in the gas phase.
    Journal of the American Chemical Society, 1999
    Co-Authors: S. Hoyau, K. Norrman, T. B. Mcmahon, Gilles Ohanessian
    Abstract:

    High Pressure Mass Spectrometric experiments and ab initio calculations have been carried out in order to establish a series of accurate gas phase sodium ion affinities of organic molecules with a wide variety of functional groups. Ab initio calculations have also been performed on the sodium complexes of three amino acids, serine, cysteine and proline. A systematic critical evaluation of experimental and computational literature results shows that a significant number require revision. Based on comparisons with accurate experimental measurements, the ab initio procedure used is shown to yield sodium ion affinities with an accuracy of ca. 1 kcal.mol-1. This enables the construction of the first reliable table of gas phase Na+ affinities for organic and small biological molecules.

  • a Quantitative Basis for a scale of na affinities of organic and small biological molecules in the gas phase
    Journal of the American Chemical Society, 1999
    Co-Authors: S. Hoyau, K. Norrman, Terry B Mcmahon, Gilles Ohanessian
    Abstract:

    High-pressure mass spectrometric experiments and ab initio calculations have been carried out in order to establish a series of accurate gas-phase sodium ion affinities of organic molecules with a wide variety of functional groups. Ab initio calculations have also been performed on the sodium complexes of three amino acids:  serine, cysteine, and proline. A systematic critical evaluation of experimental and computational literature results shows that a significant number require revision. Based on comparisons with accurate experimental measurements, the ab initio procedure used is shown to yield sodium ion affinities with an accuracy of ca. 1 kcal·mol-1. This enables the construction of the first reliable table of gas-phase Na+ affinities for organic and small biological molecules.

Liang Rong-yuan - One of the best experts on this subject based on the ideXlab platform.

N. Kuwano - One of the best experts on this subject based on the ideXlab platform.

  • Quantitative Basis for the rocking‐curve measurement of preferred orientation in polycrystalline thin films
    Journal of Applied Crystallography, 2003
    Co-Authors: Hideo Toraya, H. Hibino, Takashi Ida, N. Kuwano
    Abstract:

    A Quantitative Basis for the rocking-curve measurement of the preferred orientation in polycrystalline thin films is presented. Gaussian functions are used for modeling the density distribution of the normals to the crystal plane around the normal to the specimen surface. An intensity formula for the rocking curve is derived from the kinematical theory applied to the case of asymmetric Bragg reflection. The density distribution is determined by the least-squares fit of a theoretical rocking curve to the observed curve, and a volume fraction of crystallites, whose normals to the crystal plane are present within a defined angular range, can be obtained from it. AlN and Au polycrystalline thin films were used for testing the present procedure. Parameter values of the model function, refined using both synchrotron radiation and laboratory X-rays, agree well with each other within the experimental errors although these intensity data sets were collected under different experimental conditions in instrumentation and wavelength. A distribution of depth-dependent preferred orientation in the AlN thin film was revealed by using double-layer and multiple-layer models. A very small degree of preferred orientation in Au thin films could also be measured. Parallel-beam optics and integrated intensities instead of peak height intensities are important for reliable rocking curve measurement.

Norio Ohshima - One of the best experts on this subject based on the ideXlab platform.

  • Simulation of intraluminal gas transport processes in the microcirculation
    Annals of Biomedical Engineering, 1995
    Co-Authors: J. David Hellums, Pretep K. Nair, Nancy S. Huang, Norio Ohshima
    Abstract:

    Intraluminal resistance to gas transport between the microcirculation and tissue was neglected for a half-century following the early work of Krogh. In recent years it has come to be understood that this neglect is seriously in error. This paper reviews the background for the long period of misdirection, and progress in placing the simulation of gas transport processes on a more accurate, Quantitative Basis.