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  • 1985-1989  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of biological physics 17 (1989), S. 57-67 
    ISSN: 1573-0689
    Keywords: Phase space structure in biology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Abstract Mouse fibroblasts (3T3 line) growing in vitro in an incubator were subjected to inclusion in the incubator space of different masses and different arrangements of metallic lead. It was found that the mass of lead was positively correlated with death of a percentage of the 3T3 cells. Aside from mass, a second property of the lead, that of shape, was also found to be related to the percentage cell death. Progeny of 3T3 cells whose parents had been previously exposed to lead during their growth were found to have developed a resistance to its cytocidal effect on subsequent exposure. Such progeny cells showed no increase in cell death over the period of time which proved lethal to cells which had not had prior exposure to lead in their environment.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of biological physics 16 (1988), S. 41-45 
    ISSN: 1573-0689
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Abstract The expected diffusion phase of a drop of india ink layered on water is interrupted by the appearance of straight 0.5-mm-diameter filaments of carbon particles when two experimental conditions are imposed. First, the water is derived from ice melted near a lead mass and, second, the ink suspension is inserted into space surrounding a cylindrical vessel of chipped ice containing calcium chloride. Equilibrium between the phases, respectively diffuse and filamentary can be disturbed by placing objects in this space to the left-hand side of the ice-containing vessel. When a thin film of oil-on-water is so placed the filament disappears within 15 s. Its disappearance is prevented by the solution of a prostaglandin in the same oil. Reasons are discussed for viewing the observations as indirectly derived from a coherent air flow surrounding the ice-calcium mixture, a coherence induced in turn in its contained gas molecules by a force described by Casimir. The observations can then be seen as macroscopic quantal in nature.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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