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  • 1
    Electronic Resource
    Electronic Resource
    ACTION OF SULFURIC ACID ON THIOCYANATES (1930)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 52 (1930), S. 581-582 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01365a021
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  • 2
    Electronic Resource
    Electronic Resource
    Effect on dispersions in a multilayered medium due to the presence of an anisotropic layer (1973)
    Springer
    Pure and applied geophysics 102 (1973), S. 78-90 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary In this paper we discuss the propagation of Rayleigh type waves in an elastic medium with two horizontal layers overlying a semi-infinite elastic medium above which lies a liquid layer. The upper solid layer is taken to be transversally isotropic the elastic properties of which are given by the strain energy volume density function $$2 W = A(e_{xx^2 } + e_{yy^2 } ) + Ce_{xx^2 } + 2 F(e_{xx} + e_{yy} ) e_{zz} + 2(A - 2 N) e_{xx } e_{yy} + L(e_{yz^2 } + e_{zx^2 } ) + Ne_{xy^2 } .$$ The liquid layer is assumed to be homogeneous. The equation giving the wave velocity as a function of wave number is determined as a determinant of eleventh order which has further been simplified for different particular cases. The numerical solution of the problem will be conveyed in the next paper.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00876594
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  • 3
    Electronic Resource
    Electronic Resource
    Multiple pyogenic brain abscesses (1995)
    Springer
    Acta neurochirurgica 133 (1995), S. 36-43 
    Details
    ISSN: 0942-0940
    Keywords: Brain abscess ; intracranial suppuration ; bacterial infection ; CSF shunt ; aspiration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Thirty eight patients with multiple pyogenic brain abscesses constituted 11% of all the brain abscesses treated during a 12 year period. Sixty per cent (23) of the patients were in the first two decades of life, including 9 (24%) infants. The clinical presentation was similar to brain abscess in general. 21 patients had altered “sensorium” at the time of admission. Otogenic brain abscesses were the commonest (26%), followed by those associated with congenital cyanotic heart disease (18%). The abscesses were invariably large in size. The pus was sterile on culture in 11 (29%) patients, while Staphylococcus aureus was the commonest organism grown in 9 (24%) patients. Aspiration of the pus was required as a life saving measure, to control raised intracranial pressure, in 29 (76%) patients. Twelve (32%) of these patients underwent secondary excision of the abscess capsule. The overall mortality was 32% with failure to control intracranial and systemic infection as the major causes of mortality. Level of consciousness at the time of admission was the most significant factor affecting the outcome. Surgery has a definite therapeutic and life saving role in the management of multiple pyogenic brain abscesses. A systematic treatment plan for multiple abscesses is proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01404945
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  • 4
    Electronic Resource
    Electronic Resource
    Controversies in the management of subdural empyema (1990)
    Springer
    Acta neurochirurgica 102 (1990), S. 25-32 
    Details
    ISSN: 0942-0940
    Keywords: Subdural empyema ; intracranial suppuration ; subdural abscess ; epidural abscess
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Forty one cases of subdural empyema treated between 1977 and 1988 at the Postgraduate Institue of Medical Education and Research, Chandigarh, have been analysed. The patients ranged from 9 days to 80 years of age. There were 22 children, including 11 infants. Fever, altered sensorium and seizures were the most common symptoms present for 1 day to 6 months. Otogenic infection was the commonest aetiological factor followed by postoperative and post-traumatic causes. Thirty seven patients had supratentorial empyemas, including 4 with parafalcine collections, three had infratentorial empyemas, and in one there was extension of the empyema from the supratentorial to the infratentorial compartment. Therapeutic modalities used included percutaneous needle aspirations in infants and burr hole evacuation and craniotomies in adults. A wide spectrum of organisms was detected. Mortality in this series was 24%, which was mainly attributable to the deteriorated neurological status prior to treatment. A detailed review of the literature has been given, highlighting various controversies in the management of SDE. Important prognostic factors and a treatment plan are suggested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01402182
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  • 5
    Electronic Resource
    Electronic Resource
    Analysis of polarizabilities, potentials, and geometries of alkali–halide dimers (1991)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 95 (1991), S. 4397-4406 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: An analysis of electronic polarizabilities, interionic potentials, and equilibrium geometries for 20 alkali–halide dimers such as Na2Cl2 is presented. The electronic polarizabilities of ions in dimers have been calculated by taking account of the electrostatic potential due to neighboring ions within the Seitz–Ruffa energy level analysis. The polarizabilities thus obtained for dimers are then used to evaluate the magnitudes of polarization energies and van der Waals dipole–dipole energies. For describing the overlap repulsive potential we have adopted two forms: (i) the revised version of the Born–Mayer potential and (ii) the Harrison form for the overlap repulsive energy. These potentials have been used to obtain the binding energies of monomers as well as dimers, spectroscopic constants of monomers, equilibrium geometries of dimers, and dimerization energies. The results have been discussed and compared with available experimental data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.461763
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  • 6
    Electronic Resource
    Electronic Resource
    What do kinetic energy anisotropies tell us about chemical bonding? II. First-row A2, AO, and AF diatomics (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 2845-2849 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The kinetic energy anisotropy is examined for 18 different diatomic molecules of the type A2, AO, and AF with A=Li, Be, B, C, N, O, and F. The dimensionless measure α=(Tz−Tx)/T, where Tz and Tx, respectively, are the bond-parallel and bond-perpendicular components of the total electronic kinetic energy T, is confirmed to be useful for interpretative studies. It is shown that the orbital values of α in free atoms depend only on the angular momentum quantum numbers, and can be expressed in terms of a Condon–Shortley coefficient. Comparison of α values for individual molecular orbitals with their free atom counterparts enables one to classify molecular orbitals in terms of their parent atomic orbitals. In favorable cases, α values can also be used to estimate the extent and nature of reorganization of each orbital upon bond formation. The total molecular value of α correlates roughly with the difference between the numbers of pσ and pπ electrons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.451043
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  • 7
    Electronic Resource
    Electronic Resource
    Approximate relationships between density power integrals, moments of the momentum density, and interelectronic repulsions in diatomic molecules (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 958-962 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Moments, 〈pk〉, of the momentum distribution and density power integrals, Ik=∫ρ1+k/3dτ in which ρ is the charge density, with −2≤k≤4 are computed for 35 ground state diatomic molecules at equilibrium using self-consistent-field wave functions of nearly Hartree–Fock quality. These data are then used to test various relationships between 〈pk〉, Ik, and the interelectronic repulsion Vee. Empirical bounds to 〈pk〉 in terms of Ik are found. Moreover, empirical approximations to 〈pk〉 in terms of Ik for −1≤k≤4 are given; these have median errors not exceeding 2% for the 35 diatomics under consideration. Gradient-free density functional approximations, in both position and momentum space, to Vee with median errors of less than 5% are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.451252
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  • 8
    Electronic Resource
    Electronic Resource
    Correlation energy generating potentials for molecular hydrogen (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 83 (1985), S. 3577-3583 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A variety of local correlation energy functionals are currently in use. All of them depend, to some extent, on modeling the correlation energy of a homogeneous electron fluid. Since atomic and molecular charge densities are neither uniform nor slowly varying, it is important to attempt to use known high accuracy wave functions to learn about correlation energy functionals appropriate to such systems. We have extended the definition of the correlation energy generating potentials Vc introduced by Ros. A charge density response to correlation has been allowed for by inclusion of an electron–nuclear component Venc in addition to the electron–electron component Veec. Two different definitions of Venc are given. We present the first calculations of Vc for a molecular system—H2. The results show that Venc, in either definition, is by no means negligible. Moreover, Veec and both forms of Venc show significant nonlocal dependence on the charge density. Calculations with ten different model correlation energy functionals show that none of them is particularly sensitive to the charge density. However, they are quite sensitive to the parametrization of the electron fluid correlation energy. The schemes which include self-interaction corrections (SIC) are found to be superior to those of Kohn–Sham type. The correlation energy generating potentials implied by the SIC type and empirical correlation energy functionals are found to correspond roughly to averages of one of the accurate potentials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.449163
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  • 9
    Electronic Resource
    Electronic Resource
    THE 1965 ELECTIONS IN THE SUDAN (1966)
    Oxford, UK : Blackwell Publishing Ltd
    The @political quarterly 37 (1966), S. 0 
    Details
    ISSN: 1467-923X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Political Science
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-923X.1966.tb00241.x
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  • 10
    Electronic Resource
    Electronic Resource
    FAILURE OF ‘LOCAL-GOVERNMENT-DEMOCRACY’ IN THE SUDAN (1967)
    Oxford, UK : Blackwell Publishing Ltd
    Political studies 15 (1967), S. 0 
    Details
    ISSN: 1467-9248
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Political Science
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-9248.1967.tb01837.x
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