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  • 11
    Electronic Resource
    Electronic Resource
    Medication compliance among the seriously mentally ill in a public mental health system (1997)
    Springer
    Social psychiatry and psychiatric epidemiology 32 (1997), S. 49-56 
    Details
    ISSN: 1433-9285
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Medication non-compliance, a pervasive problem among persons with serious, chronic mental illness, has been linked to increased inpatient resources use in public mental health systems. The objective of this analysis was to determine which factors are associated with medication compliance in this population so that more appropriate screening and intervention programs can be designed. Using knowledge gained from clinical research on compliance in schizophrenia and research testing the Health Belief Model as a conceptual framework in studying compliance behavior, we conducted a secondary analysis of data collected in the Mississippi public mental health system in 1988. The study subjects were schizophrenic patients (n=202), the majority of whom were low-income, African-American males. Data sources included structured interviews with patients and family members, as well as state hospital and community mental health clinic administrative records. Receipt of consistent outpatient mental health treatment and belief that one had a mental illness were significantly associated with higher levels of medication compliance in this population of seriously mentally ill patients. Our results suggest that screening programs to identify those at highest risk for non-compliance in this population might be more productive if they included a review of inpatient and outpatient mental health service utilization patterns, in addition to formal assessment of patients' attitudes and beliefs about their illness. This study illustrates an approach to examining predictors of a policy-relevant health behavior in a minority population within a public mental health system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00788920
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  • 12
    Electronic Resource
    Electronic Resource
    Influence of Pressure on the Dielectric Properties of Ice (1957)
    [s.l.] : Nature Publishing Group
    Nature 179 (1957), S. 623-624 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The results show that there is a real but small change which takes place when pressure is applied. It appears that cold working of the sample occurs, making the experiments only qualitatively reproducible. Several features of the results are notable. (1) At a given temperature the effects in ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/179623c0
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  • 13
    Electronic Resource
    Electronic Resource
    Comparison of the effects of DMSO and pentobarbitone on experimental brain oedema (1982)
    Springer
    Acta neurochirurgica 60 (1982), S. 245-255 
    Details
    ISSN: 0942-0940
    Keywords: DMSO ; pentobarbitone ; intracranial pressure ; blood pressure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The purpose of this report is to compare the effect of acute therapy with dimethyl sulphoxide (DMSO) and pentobarbitone on experimental brain oedema produced by a cryogenic lesion over the left hemisphere in albino rabbits. A group of animals received DMSO (1 mg/kg−10% solution) by intravenous bolus, and another group received a pentobarbitone intravenous 30-minute infusion (40 mg/kg). Intracranial pressure (ICP), systolic arterial pressure (SAP), central venous pressure (CVP), and EEG were studied. Brain water and electrolyte content were analyzed at one hour following the initiation of therapy. ICP was promptly reduced with both forms of therapy. A 66% reduction from control values was reached at 50 ± 12 minutes with pentobarbitone, and a 45% reduction from control values was reached at 30 minutes with DMSO. There was no significant reduction in the water content of the brain with either form of therapy. A significant elevation in brain potassium content was noted following DMSO when compared to untreated controls. CVP was essentially unchanged in both groups. Pentobarbitone produced a reduction of SAP with a mean value of 20.3 torr at 45 minutes from infusion. DMSO produced no reduction of SAP. It is concluded that DMSO and pentobarbitone are just as effective in reducing ICP. DMSO has the capacity to maintain SAP which pentobarbitone does not have, thus assuring a better cerebral perfusion pressure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01406310
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  • 14
    Electronic Resource
    Electronic Resource
    Acute dimethyl sulphoxide therapy in experimental brain oedema, effect of dose and concentration on brain water and electrolyte content (1983)
    Springer
    Acta neurochirurgica 69 (1983), S. 77-91 
    Details
    ISSN: 0942-0940
    Keywords: Dimethyl sulphoxide ; brain water ; brain sodium ; brain potassium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Albino rabbits with experimental brain oedema produced by a combined left hemisphere cryogenic injury and a metabolic insult by a 6-aminonicotinamide (6-ANA) were administered intravenous dimethyl sulphoxide (DMSO) in varying concentrations and doses in the following manner: Subgroup A (concentration response) received 1.0 g/kg bolus of a 10, 20, 30, or 40% solution. Subgroup B (dose response) received as a 20% solution a 1.0 g/kg bolus, 1.5 g/kg bolus, or 2.0 g/kg infusion. One hour following administration of the agent, the animals were killed, their brains rapidly removed by craniectomy and brain water, sodium and potassium measured. Significant decreases in brain sodium and water content in the right hemisphere were noted in both subgroups A (p 〈 0.05) and B (p 〈 0.005) and in the left hemisphere in subgroup B only (p 〈 0.005). There is an apparent effect on brain oedema by a DMSO mediated sodium dependent water mobilization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02055856
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  • 15
    Electronic Resource
    Electronic Resource
    Utilization of mucin by oral Streptococcus species (1990)
    Springer
    Antonie van Leeuwenhoek 57 (1990), S. 165-172 
    Details
    ISSN: 1572-9699
    Keywords: fermentation ; glycosidase ; mucin ; oligosaccharide degradation ; Streptococcus species
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The ability of oral Streptococcus strains to utilize oligosaccharide chains in mucin as a source of carbohydrate was studied in batch cultures. Pig gastric mucin, as a substitute of human salivary mucin, was added to chemically defined medium containing no other carbohydrates. Strains of S. mitior attained the highest cell density, while mutans streptococci: S. mutans, S. sobrinus, S. rattus, grew very little in the medium with mucin. S. mitis, S. sanguis, and S. milleri in decreasing order, showed intermediate growth. Mucin break-down as measured by sugar analyses indicated that oligosaccharide chains were only partially degraded. Every strain produced one or more exoglycosidases potentially involved in hydrolysis of oligosaccharide. The enzyme activities occurred mainly associated with the cells, and very little activity was found in the culture fluids. The relationships between glycosidase activities and growth, or mucin degradation were not always clear.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00403951
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  • 16
    Electronic Resource
    Electronic Resource
    Vibrational spectra of molecules in the Hartree-Fock dielectric screening approachWork supported by a research grant from the Sponsored Research Committee of Control Data Corporation, Minneapolis, Minnesota. (1980)
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 18 (1980), S. 311-315 
    Details
    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: Traditionally, the calculation of the vibrational spectra of molecules involves at one point or another a numerical differentiation procedure. Such a method has some serious drawbacks both in efficiency and in accuracy. In this paper, an alternative method based on linear response theory is presented. The second derivative of the ground-state energy is expressed in terms of the electron density response matrix by means of perturbation theory. The unperturbed wave functions are obtained from the Hartree-Fock equation. First-order perturbation theory applied to this equation leads to the Hartree-Fock linear response. As an illustration of this method the vibrational frequency of a H2 molecule is calculated. The result is 1.348 × 1014 Hz as compared to the experimental value of 1.319 × 1014 Hz. This method is also applicable in the calculation of the phonon dispersion curves of solids.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/qua.560180144
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  • 17
    Electronic Resource
    Electronic Resource
    Moment expansion method to calculate vibrational frequencies of molecules and solids (1980)
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 18 (1980), S. 317-321 
    Details
    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 vibrational properties of a quantum system are determined by the density response matrix. In linear response theory this quantity is connected to the polarizability matrix, which can be expressed in terms of a double summation over one-particle energies and wave functions. In has been shown that this expression is not useful in the calculation of vibrational frequencies because of the very slow convergence of the summation in terms of the unoccupied states. In this paper, a different but equivalent expression is presented using a continued fraction. The resulting expression contains only one summation over the occupied states, solving in this way all the problems connected with the sum-over-states expression of the polarizability matrix. The elimination of all the unoccupied states via the use of the moment formula turns out to be a crucial step in the solution of the problem of the first-principles calculation of the vibrational spectra of molecules and solids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/qua.560180145
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  • 18
    Electronic Resource
    Electronic Resource
    Microscopic theory of the average band gap of semiconductorsWork supported by a research grant of the Sponsored Research Committee of Control Data Corporation, Minneapolis, Minnesota. (1980)
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 18 (1980), S. 615-618 
    Details
    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: In Phillips' spectroscopic theory of semiconductors, the covalency and ionicity are derived empirically from the average band gap between the highest valence and lowest conduction bands. In this paper an explicit expression for the average band gap is derived based on a continued fraction representation of the polarizability matrix. Results of a calculation for six covalent and polar semiconductors, using the pseudopotential model, are presented and compare favorably with experimental values.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/qua.560180235
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  • 19
    Electronic Resource
    Electronic Resource
    Total energy calculations in the DFT on binary compounds (1995)
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 55 (1995), S. 339-345 
    Details
    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: Calculations are carried out using first-principles self-consistent local-density and nonlocal density theory of the electronic structure, the total energy, and the charge density of a variety of semiconducting and insulating compounds under hydrostatic and uniaxial pressure. For several cases, the transition pressure from one structure to another is determined as well as the pressure coefficients of the main band gaps. It is shown that several properties are calculated with adequate accuracy to be compared with experiment, so that values which have not yet been measured are trustworthy predictions. © 1995 John Wiley & Sons, Inc.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/qua.560550405
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  • 20
    Electronic Resource
    Electronic Resource
    An LDA calculation of the conformation and electronic structure of polytetrafluoroethylene (1997)
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 64 (1997), S. 243-246 
    Details
    ISSN: 0020-7608
    Keywords: Chemistry ; Theoretical, Physical and Computational Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A density functional calculation of the structural and electronic properties of polytetrafluoroethylene systems with several different dihedral angles is presented using two different local density approximations, the Gáspár-Kohn-Sham and the Perdew-Zunger. All the geometrical parameters were optimized simultaneously for the stable conformation. The torsional potential curve shows an absolute minimum at the dihedral angle of 163.7°, corresponding to a slightly deformed planar zigzag conformation. Other two distinct local minima for the quasi-stable helical conformation are found at the gauche form. The calculated valence and conduction bands are discussed and compared with other theoretical calculations and experiment.   © 1997 John Wiley & Sons, Inc. Int J Quant Chem 64: 243-246, 1997
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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