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  • 1995-1999  (5)
  • 1995  (5)
  • 1
    Electronic Resource
    Electronic Resource
    A new, accurate single-sinker densitometer for temperatures from 233 to 523 K at pressures up to 30 MPa (1995)
    Springer
    International journal of thermophysics 16 (1995), S. 399-411 
    Details
    ISSN: 1572-9567
    Keywords: density ; high pressure ; high temperature ; magnetic suspension balance ; single-sinker densitometer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A new apparatus for density measurements of fluids in the entire range from gas to liquid densities is presented. The instrument is a single-sinker buoyancy densitometer designed in a completely new way. The buoyancy force exerted by the sample fluid on an immersed sinker (buoy) is transferred by a new type of magnetic suspension coupling to an analytical balance. In order to reduce drastically the linearity error of the (commercial) balance. a special basic load compensation is applied which also avoids any buoyancy ellèct of the laboratory air on the balance. The new single-sinker densitometer covers a density range from 10 to 200(1 kg - m ' at temperatures from 233 to 523 K and pressures up to 30 MPa. A special compact version of such a single-sinker densitometer can even he used at temperatures from 80 to 523 K at pressures up to 100 MPa. Test measurements on densities of carbon dioxide at 233, 360, and 523 K at pressures up to 30 MPa show that the estimated total uncertainty of ±0.02% to ±0.03% in density is clearly met.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01441906
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    External proton beam analysis of layered objects (1995)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 353 (1995), S. 297-302 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Ion-beam analysis for determining the elemental composition and to obtain depth information has been carried out with MeV protons in air by means of simultaneous external PIXE and RBS. Stainless steel products of extended size and a historic painting are analyzed non-destructively. These objects include systems of layers with areal densities up to some ten mg/cm2. Depth information is obtained by PIXE using energy variation of the primary proton beam and in addition directly from RBS for the outermost near-surface region. Main and secondary elements as well as impurities can be determined together with areal densities. Particularly, the knowledge on the depth distribution of the pigments in paintings provides information on paint techniques.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00322055
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    External proton beam analysis of layered objects (1995)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 353 (1995), S. 297-302 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Ion-beam analysis for determining the elemental composition and to obtain depth information has been carried out with MeV protons in air by means of simultaneous external PIXE and RBS. Stainless steel products of extended size and a historic painting are analyzed non-destructively. These objects include systems of layers with areal densities up to some ten mg/cm2. Depth information is obtained by PIXE using energy variation of the primary proton beam and in addition directly from RBS for the outermost near-surface region. Main and secondary elements as well as impurities can be determined together with areal densities. Particularly, the knowledge on the depth distribution of the pigments in paintings provides information on paint techniques.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s0021653530297
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    A note on FEM buckling analysisThis paper is dedicated to R. L. Taylor on the occasion of his 60th birthday. (1995)
    Chichester : Wiley-Blackwell
    Communications in Numerical Methods in Engineering 11 (1995), S. 149-158 
    Details
    ISSN: 1069-8299
    Keywords: FEM ; stability analysis ; algorithms ; shell structures ; Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: The investigation of the non-linear response of shell-like structures requires insight into stability behaviour. In the paper we compare two strategies to compute singular points based on different eigenvalue problems. We show a simple algorithm to calculate critical load factors A used in engineering buckling analysis from the eigenvalues of the standard eigenvalue problem (KT - ω1) ϕ = 0. Some numerical examples illustrate the derived results and algorithms.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cnm.1640110208
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Warum gerade Chemnitz? (1995)
    Weinheim : Wiley-Blackwell
    Chemie in unserer Zeit 29 (1995), S. 337-337 
    Details
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ciuz.19950290611
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    Paper (German National Licenses)
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