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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 42 (1986), S. 437-439 
    ISSN: 1420-9071
    Keywords: Allium cepa ; cytokinesis inhibitor ; root meristem ; vanadate ; caffeine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The effect of vanadate ions on plant cytokinesis has been studied inAllium cepa root meristematic cells. Vanadate induces binucleate cells by inhibiting cell plate formation. Moreover, vanadate and caffeine have additive effects in the induction of binucleate cells.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 3939-3944 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A perturbative treatment for perturbed Kratzer potentials is carried out. Recursion expressions for the energy and expectation values of powers of the internuclear separation are derived by using conmutation relations. An application to the Simons, Parr, and Finlan potential is made. Numerical results are compared with those derived by direct numerical integration.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 12 (1989), S. 0 
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract. Ascorbate free radical (AFR) induced cell elongation in merislems of Allium cepa roots by promoting a high vacuolization as shown by the increased vacuole volume, vacuole volume density, tonoplast surface and tonoplast surface density. Accordingly, both plasma membrane- and tonoplast-associated ATPases and vacuole soluble acid phosphatase of meristematic cells were also increased. Neither the other subcellular organelles nor cell proliferation appeared to be significantly affected. It is suggested that AFR may be involved in some plasma membrane events related to the initiation of plant cell elongation.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The patterning of cells in insect segments requires the exchange of information between cells, which in Drosophila depends on the activity of members of the segment-polarity class of genes. Here we report the molecular characterization of one such gene, patched. We find that patched encodes a large ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    International orthopaedics 12 (1988), S. 89-91 
    ISSN: 1432-5195
    Keywords: Hip ; Dislocation ; Habitual ; Child
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les auteurs rapportent l'observation clinique d'une luxation volontaire de la hanche chez une petite fille de deux ans qui ne présentait pas d'autres anomalies. Cette malformation ne fut traitée que par des moyens psychologiques et disparut complètement en l'espace de deux ans. 8 cas seulement, en plus de celui-ci, ont été retrouvés dans la litérature mondiale. En revoyant celle-ci, on constate que les résultats obtenus par les auteurs sont identiques à ceux qui ont été publiés auparavant.
    Notes: Summary We report the case of a girl, aged 2 years, who was able to dislocate her right hip voluntarily and in whom there was no other abnormality. She was given psychological treatment and the condition resolved after 2 years. Eight similar cases of habitual dislocation of the hip are reported in the world literature.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 36 (1989), S. 49-60 
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A perturbative SCF CI treatment to obtain energy levels of coupled oscillator systems is proposed. The method uses the virtual SCF basis set, and the SCF equations are solved by means of a perturbative treatment that provides the diagonal matrix elements involved in the CI calculation. The off-diagonal matrix elements are calculated using a commutation relationship derived from exact quantum theorems. Numerical results for several systems are obtained and compared with those from others SCF, SCF CI, and variational treatments.
    Additional Material: 8 Tab.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 32 (1987), S. 511-516 
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The SCF method for the calculation of energy levels of triatomic molecules is applied using the hypervirial perturbative procedure for solving the coupled equations. This treatment allows to obtain in a recursive way the energy corrections and the expectation values required in the SCF treatment, avoiding the explicit calculation of the wave functions. A numerical application is made to the SO2 and O3 molecules, comparing our results with those obtained by other methods.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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