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  • 1
    Electronic Resource
    Electronic Resource
    A stratospheric chemical reaction controlling climatic change (1998)
    Springer
    Speculations in science and technology 21 (1998), S. 187-197 
    Details
    ISSN: 1573-9309
    Keywords: Carbon dioxide ; climate change ; radiant energy production
    Source: Springer Online Journal Archives 1860-2000
    Topics: Natural Sciences in General , Technology
    Notes: Abstract The present mechanism of radiant energy production in the atmosphere is considered and it is shown that it is not compatible with accepted principles of physics. An alternative mechanism whereby the temperature of the atmosphere and surface of the Earth is regulated by a chemical reaction in the stratosphere is described. It is shown that this mechanism can account for the changes in climate which occurred during the past ten thousand years. The effect on this mechanism of changes in the composition of atmospheric gases, including changes resulting from human activities, is described and the consequences of the changes recorded.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005416211463
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  • 2
    Electronic Resource
    Electronic Resource
    Concomitant regulation of Mu1 transposition and Mutator activity in maize (1987)
    Springer
    Molecular genetics and genomics 208 (1987), S. 57-62 
    Details
    ISSN: 1617-4623
    Keywords: Transposable elements ; Mutation ; Mutator ; Maize
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The mutagenic activity of the maize transposable element system Mutator can be lost by outcrossing to standard, non-Mutator lines or by repetitive intercrossing of genetically diverse Mutator lines. Lines losing Mutator mutagenic activity in either manner retain high copy numbers (10–15 per diploid genome) of the Mutator-associated Mu transposable elements. Frequent transposition of Mu1-related elements is observed only in active Mutator lines, however. The loss of Mutator activity on intercrossing is correlated with an increase in the copy number of Mu1-like elements to 40–50 per diploid genome, implying a self-encoded or self-activated negative regulator of Mu1 transposition. The outcross loss of Mutator activity is only weakly correlated with a low Mu element copy number and may be due to the loss of a positive regulatory factor encoded by a subset of Mu1-like elements. Transposition of Mu elements in active Mutator lines generates multiple new genomic positions for about half the elements each plant generation. The appearance of Mu1-like elements in these new positions is not accompanied by equally high germinal reversion frequencies, suggesting that Mu1 may commonly transpose via a DNA replicative process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00330422
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