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  • Springer  (29)
  • Wiley-Blackwell  (12)
  • Nature Publishing Group  (9)
  • 1985-1989  (18)
  • 1980-1984  (23)
  • 1920-1924
  • 1910-1914
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Year
  • 1
    Electronic Resource
    Electronic Resource
    The suitability of restriction fragment length polymorphisms as genetic markers in maize (1986)
    Springer
    Theoretical and applied genetics 71 (1986), S. 765-771 
    Details
    ISSN: 1432-2242
    Keywords: Zea mays L ; Restriction fragment length polymorphism (RFLP) ; Genetic mapping ; B-A translocations ; Recombinant inbreds
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Strain identification in Zea mays by restriction fragment length polymorphism should be feasible due to the high degree of polymorphism found at many loci. The polymorphism in maize is apparently higher than that currently known for any other organism. Five randomly selected maize inbred lines were examined by Southern filter hybridization with probes of cloned low copy sequences. Typically, several alleles could be distinguished among the inbred lines with any one probe and an appropriately selected restriction enzyme. Despite considerable polymorphism at the DNA level, 16 RFLP markers in three inbred lines of maize were examined for six to 11 generations and found be stable. Mapping of RFLP markers in maize can be accelerated by the use of B-A translocation stocks, which enable localization of a marker to chromosome arm in one generation. The use of recombinant inbred lines in further refinement of the map is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00276416
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  • 2
    Electronic Resource
    Electronic Resource
    DNase I hypersensitivity and expression of the Shrunken-1 gene of maize (1987)
    Springer
    Plant molecular biology 8 (1987), S. 251-264 
    Details
    ISSN: 1573-5028
    Keywords: chromatin structure ; DNase I hypersensitivity ; gene expression ; sucrose synthetase ; Zea mays
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The local chromatin structure of the Shrunken-1 (Sh) gene of maize was probed by analyzing DNase I hypersensitivity. Sh encodes the gene for sucrose synthetase, a major starch biosynthetic enzyme, which is maximally expressed in the endosperm during seed maturation. In addition to general DNase I sensitivity, specific DNase I hypersensitive sites were identified in endosperm chromatin that mapped near the 5′ end of the Sh gene. The pattern of hypersensitive sites and their relative sensitivity were altered in other non-dormant tissues that produce little or no enzyme. However, some changes in chromatin structure appear to be independent of Sh gene expression and may reflect general alterations associated with plant development. The chromatin structure of several sh mutations, induced by Ds controlling element insertions, was also analyzed. Although the insertions perturbed expression of the gene, there were no notable effects on local chromatin structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00015033
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  • 3
    Electronic Resource
    Electronic Resource
    Noise and recognizability of coarse quantized images (reply) (1984)
    [s.l.] : Nature Publishing Group
    Nature 308 (1984), S. 212-212 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] MORRONE ET AL. REPLY-For us the most intriguing aspect of Harmon and Julesz's1 ingenious demonstration is that blocking does not merely degrade the image, but renders recognition impossible. Normal masking (such as their Fig. 3a1 or indeed our Fig. 1d2) degrades the image but leaves it still ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/308212a0
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  • 4
    Electronic Resource
    Electronic Resource
    Motion smear (1980)
    [s.l.] : Nature Publishing Group
    Nature 284 (1980), S. 164-165 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In addition to the threshold measurements of temporal summation it is also well established that super-threshold stimulation leads to a sensation which persists in vision for some time after the termination of the stimulus4, again, for about 120 ms in daylight5,6. Perhaps the most direct ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/284164a0
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  • 5
    Electronic Resource
    Electronic Resource
    Biochemical basis for the continuous copulation of female Schistosoma mansoni (1980)
    [s.l.] : Nature Publishing Group
    Nature 283 (1980), S. 478-479 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] To detect which proteins were actually produced by the worms, S. mansoni of the NIH strain were perfused from C57BL/6B mice at 70 days post-infection, mechanically separated according to sex, and incubated for 24 h in medium HB597 (Connaught) with 10% fetal calf serum and 8 µCi ml-1 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/283478a0
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  • 6
    Electronic Resource
    Electronic Resource
    Earwigs of India (1910)
    [s.l.] : Nature Publishing Group
    Nature 83 (1910), S. 339-339 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN NATURE of April 14 was published a review of my half-volume on the Dermaptera in the “Fauna of British India” series, in which the reviewer directed attention to a most regrettable oversight on my part in omitting to allude to the British Museum when acknowledging the various sources which ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/083339f0
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  • 7
    Electronic Resource
    Electronic Resource
    Goodness of trees for generalized books (1987)
    Springer
    Graphs and combinatorics 3 (1987), S. 1-6 
    Details
    ISSN: 1435-5914
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract A connected graphG is said to beF-good if the Ramsey numberr(F, G) is equal to(x(F) − 1)(p(G) − 1) + s(F), wheres(F) is the minimum number of vertices in some color class under all vertex colorings by χ (F) colors. It is of interest to know which graphsF have the property that all trees areF-good. It is shown that any large tree isK(1, 1,m 1,m 2,...,m t )-good.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01788524
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  • 8
    Electronic Resource
    Electronic Resource
    Intragenomic DNA sequence homologies in the chicken and other members of the classAves: DNA re-association under reduced stringency conditions (1980)
    Springer
    Journal of molecular evolution 15 (1980), S. 291-307 
    Details
    ISSN: 1432-1432
    Keywords: Avian genome evolution ; Intragenomic DNA sequence homology Reduced-stringency DNA reassociation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We have investigated the intragenomic DNA sequence homologies of twelve species of birds representing five orders, and emphasizing Galliformes. This study differs in two important ways from the classical approaches taken in constructing and evaluating phylogenies based on DNA sequence similarities. Comparisons are made on the basis of sequence homologieswithin genomes of related birds, rather than between genomes. DNA is reassociated at 50°C in 0.5M phosphate buffer; these conditions allow formation and detection of duplexes containing more mismatch than would normally be permitted using more stringent conditions, affording an opportunity to observe more ancient sequence homologies. Thermal stability profiles of DNA duplexes formed under these conditions are the basis of comparison; three general patterns were observed. This approach emphasizes differences in sequence composition between genomes while the more traditional method of intergenomic tracer DNA hybridization at higher stringency emphasizes sequence similarities. No correlation was found between taxonomic position and intragenomic sequence composition, either within or between lineages. The thermal stability profiles of DNA duplexes formed within avian genomes did not reflect the biological similarities inferred from morphology, karyotype, and studies of interspecific hybridization. While all of the differences observed could have occurred over geological time, it was surprising that the genomes of the domestic chicken and the Red Jungle Fowl (Gallus gallus) differ in their sequence compositions. It appears that amplification/reduction events and/or positional changes occur rather often during evolution of a lineage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01733136
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  • 9
    Electronic Resource
    Electronic Resource
    Solar Maximum Mission (1980)
    Springer
    Solar physics 65 (1980), S. 5-14 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The scientific objective of the Solar Maximum Mission is to understand the physics of solar flares. A description is provided for the SMM spacecraft, the scientific planning activity, the observing vprogram and the guest investigator program associated with the mission.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00151380
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  • 10
    Electronic Resource
    Electronic Resource
    Mach bands are phase dependent (1986)
    [s.l.] : Nature Publishing Group
    Nature 324 (1986), S. 250-253 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Mach originally7 used rotating discs and drums to study the bright and dark bands that appear where ramps of luminance meet plateaux as, for example, at the borders of the penumbra of a shadow. He later devised optical methods to cast shadows8. For the studies reported here we used gratings formed ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/324250a0
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