Showing papers by "Henan Normal University published in 1994"
TL;DR: In this article, the additivity rule is employed to calculate the total (elastic and absorption) cross sections for electron scattering by molecules (O 2, N 2, CO and CO 2 ) over an incident energy range of 10-800 eV.
22 citations
TL;DR: In this article, the one-loop electroweak contributions of genuine supersymmetric particles (charginos, neutralinos and sfermions) to the SM top decay t → W + b are calculated in the minimal super-ymmetric model.
12 citations
TL;DR: In this paper, the enthalpies of α-alanine were measured in water and in LiCl, NaCl and KCl solutions at 298.15 K. The dependences of enthalpic interaction parameters on the ionic size of the electrolyte are discussed within the concepts of electrostatic and structural interactions.
10 citations
TL;DR: In this paper, the effects of virtual charged pseudo Goldstone bosons on the vertex of the one-generation technicolor model at one-loop level have been investigated and the largest reduction to the partial width is 46 MeV and the maximum correction to the ratio is [minus]9.6%.
Abstract: In this paper we calculate the effects on the [ital Zb[bar b]] vertex from the virtual charged pseudo Goldstone bosons [ital P][sup [plus minus]] and [ital P][sub 8][sup [plus minus]] in the one-generation technicolor model at the one-loop level. In the parameter space the largest reduction to the partial width [Gamma]([ital Z][r arrow][ital b[bar b]]) is 46 MeV and the maximum correction to the ratio [ital R][sub [ital b]][sup MSM] is [minus]9.6%.
4 citations
TL;DR: In this paper, the stability of β-CD · C7H8O · 5H2O was investigated using TG and DSC, showing that the weight loss takes place in three stages: the dehydration occurs at 47 −110°C, the dissociation of β −CD ·C7H 8O occurs at 200 −250°C; and the decomposition of β -CD begins at 270°C.
4 citations
TL;DR: In this article, an ionic crystal is modeled by a one-dimensional semi-infinite chain of alternating s-and p-orbitals, and the results show that the substrate's electronic structure and its surface density of states play important roles in the resonance-charge transfer process.
2 citations
TL;DR: In this article, the authors consider the Hilbert space and show that if f(z) is an analytic function in unit disk, and f(x) is a proper contraction operator on H, then
1 citations
TL;DR: In this paper, the positron lifetime data in high Tc cuprate perovskite YBa2Cu3−xAlxOy (x=0−0.4) systems were presented.
Abstract: In this paper, we present the positron lifetime data in high Tc cuprate perovskite YBa2Cu3−xAlxOy (x=0−0.4) systems. A significant Al substitution dependence of the positron lifetime parameters was observed, and the local electron density ne and defect concentration Cd were also calculated as a function of Al substitution x. The results show that at low doping concentration, x≤0.15, both ne and Cd exhibit a large change and then reach a limit value of saturation or a peak value above x=0.15 which corresponds just right to the known structural transition from orthorhombic to tetragonal phase. Here, the decrease in ne can be interpreted by weak electronic localization in Cu-O chains. The effect of ne on superconductivity and the mechanisms of positron annihilation were also discussed.
1 citations
TL;DR: In this paper, the positron lifetime results for oxygen deficient YBa 2 Ca 3 O 7− δ ( δ = 0.06∼0.68) systems and calculate the local electron density n e and vacancy concentration C v as a function of δ at 77K and 300K.
Abstract: We report the positron lifetime results for oxygen deficient YBa 2 Ca 3 O 7− δ ( δ = 0.06∼0.68) systems and calculate the local electron density n e and vacancy concentration C v as a function of δ at 77K and 300K. The results show that there exist a significant dependence on oxygen-deficient and near δ = 0.4, corresponding only right to O-T transition, an anomalous change occurses. These may be explained by the electronic weak localization and orthorhombic structural characteristic of Y(123) cuprate.
1 citations
TL;DR: In this paper, the resonance charge transfer during the scattering of a positive ion from a disordered binary alloy surface is investigated within the framework of the approximate many-level method, and the results obtained show that the substrate's electronic structure and the concentration percentages of the two components play important roles in the charge transfer process.