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  • 1
    Electronic Resource
    Electronic Resource
    Stability of complex ecosystems (1975)
    [s.l.] : Nature Publishing Group
    Nature 256 (1975), S. 120-121 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have constructed random matrices according to the procedure suggested by Daniels and Mackay4: the diagonal elements att(i=l, 2, ..., TV) were taken from the uniform distribution on (-1, -0.1) and a specified fraction C of the off-diagonal elements were taken from the uniform distribution on (-1, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/256120a0
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  • 2
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    RIDLEY, MARK: "The Problems of Evolution" (Book Review) (1987)
    Oxford : Periodicals Archive Online (PAO)
    The British journal for the philosophy of science. 38 (1987) 412 
    Details
    ISSN: 0007-0882
    Topics: Natural Sciences in General , Philosophy
    Notes: REVIEWS
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:4064-1987-038-00-000057
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  • 3
    Electronic Resource
    Electronic Resource
    Mathematics for the non-mathematician (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 37-37 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Handbook of Applicable Mathematics. Chief editor Walter Ledermann. Vol. I Algebra. Edited by Walter Ledermann and Steven Vajda. Pp. 532. (Wiley: 1980.) Subscription price for core volumes £27.50, $75 each, single volumes £32.50, $85. UNLIKE their colleagues in physics, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/288037a0
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  • 4
    Electronic Resource
    Electronic Resource
    Maths applied (1981)
    [s.l.] : Nature Publishing Group
    Nature 289 (1981), S. 715-715 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Statistics and Experimental Design. 2nd Edn. By G. M. Clarke. Pp.188. (Edward Arnold/University Park Press: 1980.) Flexi 6.50, 24.50. Mathematics and Statistics for the Bio-Sciences. By G. Easen, C. W. Coles and G. Gettinby. Pp.578. (Ellis Horwood: 1980.) Hbk 25, 90; pbk8.50. Statistics for ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/289715a0
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  • 5
    Electronic Resource
    Electronic Resource
    Determination of critical variables in a microbial predator–prey system by catastrophe theory (1978)
    [s.l.] : Nature Publishing Group
    Nature 275 (1978), S. 52-54 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Dent et al.3 grew vegetative amoebae of the cellular slime mould, Dictyostelium discoideum, in continuous culture with a bacterial food source, Escherichia coli B/r. Figure 1 illustrates how during the first 150 h of the experiment the amoebae passed through alternating phases of exponential growth ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/275052a0
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  • 6
    Electronic Resource
    Electronic Resource
    Population dynamics and the length of food chains (1978)
    [s.l.] : Nature Publishing Group
    Nature 272 (1978), S. 189-190 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] PIMM and Lawton1 have claimed that increasing the number of trophic levels tends to increase the time taken for a stable ecosystem to return to equilibrium after a perturbation, and they have suggested that this is the chief reason why food chains are typically short. I show here that the first of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/272189b0
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  • 7
    Electronic Resource
    Electronic Resource
    Oscillations in tropical ecosystems (1976)
    [s.l.] : Nature Publishing Group
    Nature 261 (1976), S. 525-525 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] BIGGER1 has provided examples to show that population oscillations do in fact occur in the tropics. My purpose here is to show that his observations actually provide evidence in favour of the suggestion2 that the linear connectivity of complex ecosystems is low, even though they contradict a ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/261525b0
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  • 8
    Electronic Resource
    Electronic Resource
    Pretty pictures (1990)
    [s.l.] : Nature Publishing Group
    Nature 348 (1990), S. 360-360 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Envisioning Information By Edward R. Tufte. Graphics Press: 1990. Pp. 126. $48. ONE picture, so we are told, is worth a thousand words. Certainly most scientists seem to think so, judging by the large number of figures and tables we put into our papers. With pictures even more than with words, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/348360a0
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  • 9
    Electronic Resource
    Electronic Resource
    The field of a uniformly accelerated current (1970)
    Springer
    International journal of theoretical physics 3 (1970), S. 425-427 
    Details
    ISSN: 1572-9575
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The electromagnetic potentials of a long, straight wire carrying a steady current and being uniformly accelerated in a direction at right angles to the direction of the current flow are calculated exactly, and it is shown that the prediction by Cohn that there would be a non-zero component of the electric field parallel to the wire is incorrect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00672448
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  • 10
    Electronic Resource
    Electronic Resource
    Cellular localisation of messenger RNAs in rat testis: application of digoxigenin-labelled ribonucleotide probes to embedded tissue (1993)
    Springer
    Cell & tissue research 273 (1993), S. 269-277 
    Details
    ISSN: 1432-0878
    Keywords: Spermatogenesis ; Cyclic protein 2 ; Transition protein 2 ; Cytochrome c oxidase ; Sertoli cell ; Spermatids ; Pachytene spermatocytes ; Rat (Wistar)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract In an attempt to identify key changes involved in normal spermatogenesis we have developed methods to enable the study of gene expression by the various subpopulations of testicular cells by use of in-situ hybridisation histochemistry. The use of digoxigenin-labelled ribonucleotide and oligonucleotide probes on testicular tissue perfusion-fixed with Bouin's fixative and embedded in paraffin, polystyrene or methacrylate, has been used to accurately localise three transcripts to three different cell types (Sertoli cells, pachytene spermatocytes, and step 7–12 spermatids) within the seminiferous tubule. The ability to produce semi-thin sections of polystyrene- or methacrylate-embedded tissue and successfully to apply digoxigenin-labelled ribonucleotide or oligonucleotide probes resulted in far greater resolution and unequivocal localisation of mRNA in testicular cells than was previously possible by use of thicker paraffin or frozen sections hybridised with 35S-labelled riboprobes. A comparison of the different embedding media versus digoxigenin-labelled oligonucleotide or ribonucleotide probes is made and we demonstrate the relative sensitivities and merits of each combination.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00312828
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