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  • 1995-1999  (2)
  • Test particles  (1)
  • aqueous solutions  (1)
  • 1
    Electronic Resource
    Electronic Resource
    The stability of 12-molybdosilicic, 12-tungstosilicic, 12-molybdophosphoric and 12-tungstophosphoric acids in aqueous solution at various pH (1995)
    Springer
    Catalysis letters 34 (1995), S. 237-244 
    Details
    ISSN: 1572-879X
    Keywords: metal-oxygen cluster compounds ; heteropoly acids ; stability ; pH ; aqueous solutions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The stabilities of the solid superacids H3Mo12O40, H3PW12O40, H4SiMo12O40 and H4SiW12O40 in aqueous solution have been measured at various values of pH by use of ion chromatographic analyses. The aforementioned acids are completely decomposed at values of pH, 4.0, 5.2, 7.0 and 11.0, respectively. The stabilities in aqueous solution with respect to pH follow the order H4SiW12O40 〉 H3PW12O40 〉 H4SiMo12O40 〉 H3PMo12O40.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00808338
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Geodesic and path motion in the Nonsymmetric Gravitational Theory (1996)
    Springer
    General relativity and gravitation 28 (1996), S. 1221-1249 
    Details
    ISSN: 1572-9532
    Keywords: Test particles ; Yukawa force ; nonsymmetric metric
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We study the problem of test-particle motion in the Nonsymmetric Gravitational Theory (ngt) assuming the four-velocity of the particle is parallel-transported along the trajectory. The predicted motion is studied on a static, spherically symmetric background field, with particular attention paid to radial and circular motions. Interestingly, it is found that the proper time taken to travel between any two non-zero radial positions is finite. It is also found that circular orbits can be supported at lower radii than in General Relativity for certain forms of motion. We present three interactions which could be used as alternate methods for coupling a test-particle to the antisymmetric components of thengt field. One of these takes the form of a Yukawa force in the weak-field limit of a static, spherically symmetric field, which could lead to interesting phenomenology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02107382
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    Paper (German National Licenses)
    Fulltext
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