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  • 1990-1994  (3)
  • Engineering  (1)
  • polyol process  (1)
  • post-traumatic stress disorder  (1)
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Material
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Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Preparation of metal supported montmorillonite catalyst: A new approach (1990)
    Springer
    Catalysis letters 6 (1990), S. 401-407 
    Details
    ISSN: 1572-879X
    Keywords: Catalyst ; montmorillonite ; clays ; copper metal ; polyol process
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A new approach for the preparation of metal supported montmorillonite catalyst is reported here for the first time. The polyol process in which ethylene glycol is used as reducing agent was employed for the preparation of uniformly distributed copper metal particles on and within the montmorillonite matrix. A hydroxy copper acetate intercalated form of montmorillonite was refluxed at 195 °C with liquid ethylene glycol for 6 h. The reduction of copper acetate to copper metal was apparent from the red color of the reduced product. An X-ray powder diffraction pattern showed the deposition of copper metal on the external surface of montmorillonite and scanning electron micrographs exhibited uniformly distributed spherical copper metal particles of about 0.5 μm size. This process may also be extended for the preparation of other fine metal particles supported on montmorillonite catalysts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00764008
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Symptom exaggeration in a PTSD inpatient population: Response set or claim for compensation (1992)
    Springer
    Journal of traumatic stress 5 (1992), S. 633-642 
    Details
    ISSN: 1573-6598
    Keywords: post-traumatic stress disorder ; service-connection ; assessment of PTSD ; Vietnam veteran
    Source: Springer Online Journal Archives 1860-2000
    Topics: Psychology
    Notes: Abstract This study examines the relationship between service-connection (financial compensation) and exaggeration of PTSD symptoms. Sixty inpatient Vietnam combat veterans in PTSD treatment comprised three groups: those financially compensated for PTSD, those financially compensated for physical or other mental problems, and those not financially compensated. Results indicate that those veterans who are not service-connected do not exaggerate symptoms on the MMPI F-scale more than those who are service-connected. Also, F scores reported for inpatient PTSD were higher than previously established cut-off criteria found chiefly in outpatient populations. Implications for therapists' biases concerning financial compensation and symptom claims are discussed in terms of their clinical relevance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00979231
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Computational enhancement of an unsymmetric block Lanczos algorithm (1990)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 30 (1990), S. 1083-1089 
    Details
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: An unsymmetric block Lanczos algorithm has been employed for the dynamic analysis of a large system which has arbitrary damping and/or repeated (or closely spaced) eigenvalues. In the algorithm development, the right and left Lanczos vectors are all theoretically biorthogonal to each other. However, these vectors may lose the biorthogonality owing to cancellation and roundoff errors. For the unsymmetric case there can be a breakdown, even without numerical errors. This paper describes computational techniques which have led to a robust unsymmetric block Lanczos algorithm.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nme.1620300509
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    Paper (German National Licenses)
    Fulltext
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