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  • Logistic models  (2)
  • 25.70.Hi  (1)
  • Chemistry  (1)
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  • 1
    Digitale Medien
    Digitale Medien
    Interplay of pairing and quadrupole correlations in deformed nuclei (1993)
    Springer
    The European physical journal 346 (1993), S. 269-274 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 21.60.-n ; 25.70.Hi
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract We study pairing correlations in deformed nuclei in the framework of the Nilsson+BCS theory. As in the spherical case, the pairing interaction is found to induce strong spacial correlations between the partners of each paired couple. The presence of the deformed mean field gives rise to a non-spherical pair field, whose deformation is governed by the properties of a few single-particle orbitals around the Fermi surface and does not necessarily follow the shape of the mean field. Multipole expansion of the pair field yields all the pair densities associated with the direct two-particle transfer processes to the members of the g.s. rotational band in the A+2 system. The interplay of the deformations of the mean and the pair fields can lead to different relative magnitudes and phases of these densities and therefore to different excitation patterns of the rotational bands in two-particle transfer reactions. In the case of non-collective twoquasiparticles and bands the associated pair densities display large components with high multipoles and the associated transfer processes may be favoured in heavy-ion collisions by kinematical conditions. Examples corresponding to both prolate and oblate cases are considered.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01292516
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  • 2
    Digitale Medien
    Digitale Medien
    A predictive model for the treatment approach to community-acquired pneumonia in patients needing ICU admission (1996)
    Springer
    Intensive care medicine 22 (1996), S. 1294-1300 
    Details
    ISSN: 1432-1238
    Schlagwort(e): Key words Community-acquired infections ; Bacterial pneumonia ; Intensive Care Units ; Logistic models
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract   Objective: To create a predictive model for the treatment approach to community-acquired pneumonia (CAP) in patients needing Intensive Care Unit (ICU) admission. Design: Multicenter prospective study. Setting: Twenty-six Spanish ICUs. Patients: One hundred seven patients with CAP, all of them with accurate etiological diagnosis, divided in three groups according to their etiology in typical (bacterial pneumonia), Legionella and other atypical (Mycoplasma, Chlamydia spp. and virus). For the multivariate analysis we grouped Legionella and other atypical etiologies in the same category. Methods: We recorded 34 variables including clinical characteristics, risk factors and radiographic pattern. We used a multivariate logistic regression analysis to find out a predictive model. Results: We have the complete data in 70 patients. Four variables: APACHE II, (categorized as a dummy variable) serum sodium and phosphorus and “length of symptoms” gave an accurate predictive model (c=0.856). From the model we created a score that predicts typical pneumonia with a sensitivity of 90.2% and specificity 72.4%. Conclusion: Our model is an attempt to help in the treatment approach to CAP in ICU patients based on a predictive model of basic clinical and laboratory information. Further studies, including larger numbers of patients, should validate and investigate the utility of this model in different clinical settings.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01709541
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  • 3
    Digitale Medien
    Digitale Medien
    A predictive model for the treatment approach to community-acquired pneumonia in patients needing ICU admission (1996)
    Springer
    Intensive care medicine 22 (1996), S. 1294-1300 
    Details
    ISSN: 1432-1238
    Schlagwort(e): Community-acquired infections ; Bacterial pneumonia ; Intensive Care Units ; Logistic models
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Objective To create a predictive model for the treatment approach to community-acquired pneumonia (CAP) in patients needing Intensive Care Unit (ICU) admission. Design Multicenter prospective study Setting Twenty-six Spanish ICUs. Patients One hundred seven patients with CAP, all of them with accurate etiological diagnosis, divided in three groups according to their etiology in typical (bacterial pneumonia),Legionella and other atypical (Mycoplasma, Chlamydia spp. and virus). For the multivariate analysis we groupedLegionella and other atypical etiologies in the same category. Methods We recorded 34 variables including clinical characteristics, risk factors and radiographic pattern. We used a multivariate logistic regression analysis to find out a predictive model. Results We have the complete data in 70 patients. Four variables: APACHE II, (categorized as a dummy variable) serum sodium and phosphorus and “length of symptoms” gave an accurate predictive model (c=0.856). From the model we created a score that predicts typical pneumonia with a sensitivity of 90.2% and specificity 72.4%. Conclusion Our model is an attempt to help in the treatment approach to CAP in ICU patients based on a predictive model of basic clinical and laboratory information. Further studies, including larger numbers of patients, should validate and investigate the utility of this model in different clinical settings.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01709541
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  • 4
    Digitale Medien
    Digitale Medien
    A fast method of molecular shape comparison: A simple application of a Gaussian description of molecular shape (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Computational Chemistry 17 (1996), S. 1653-1666 
    Details
    ISSN: 0192-8651
    Schlagwort(e): Chemistry ; Theoretical, Physical and Computational Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Informatik
    Notizen: A Gaussian description of molecular shape is used to compare the shapes of two molecules by analytically optimizing their volume intersection. The method is applied to predict the relative orientation of ligand series binding to the proteins, thrombin, HIV protease, and thermolysin. The method is also used to quantify the degree of chirality of asymmetric molecules and to investigate the chirality of biphenyl and the amino acids. The shape comparison method uses the newly described shape multipoles that can also be used to describe the inherent shape of molecules. Some results of calculated shape quadrupoles are given for the ligands used in this work. © 1996 by John Wiley & Sons, Inc.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jcc.7
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