553 research outputs found

    Diatomic Molecules in deSitter and Anti-deSitter Spaces

    Full text link
    The Schr\"odinger equation for diatomic molecules in deSitter and anti-deSitter spaces is studied using the extended uncertainty principle formulation. The equations are solved by the Nikiforov-Uvarov method for both the Kratzer potential and the pseudoharmonic oscillator. The energy eigenvalues of the system have been derived analytically, and the exact expressions of the eigenfunctions are provided in terms of Romanovski and Jacobi polynomials. The impact of the spatial deformation parameter on the bound states is also examined, with experimental results used to establish an upper limit for this parameter.Comment: 13 pages, 7 figures and 4 table

    Cytosinium–hydrogen maleate–cytosine (1/1/1)

    Get PDF
    The title organic salt, C4H6N3O+·C4H3O4 −·C4H5N3O, was synthesized from cytosine base and maleic acid. An intra­molecular O—H⋯O hydrogen bond occurs in the hydrogen maleate anion. The crystal packing is stabilized by inter­molecular N—H⋯O, N—H⋯N and C—H⋯O hydrogen bonds, giving rise to a nearly planar two-dimensional network parallel to (101)

    Hélène Temerson (1896-1977). Parcours d’une universitaire juive d’Europe de l’Est

    Get PDF
    À la fin du XIXe siècle, les sociétés juives d’Europe de l’Est sont aux prises avec de vastes changements qui les bouleversent irrémédiable­ment. L’une de ces mutations, en cours depuis la moitié du siècle, con­cerne la place de la femme et, en aval, son éducation. En effet, un nombre sans cesse croissant de femmes juives accèdent alors à l’éducation primaire, puis secondaire. D’une part, l’empire tsariste voit dans la scolarité des enfants juifs un moyen de les assimiler. De l’autre, de mani..
    corecore