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  • Nature Publishing Group  (3,471)
  • 1980-1984  (3,471)
  • 1981  (3,471)
  • 1
    Publication Date: 2016-09-02
    Description: Analysis of aeolo-marine dust deposits in the subtropical eastern Atlantic enables the strength of the major wind patterns during the late Quaternary to be evaluated and gives an insight into the climate of North Africa.
    Type: Article , PeerReviewed
    Format: text
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  • 2
    Publication Date: 2016-04-11
    Description: There has been concern about recent temperature trends and the future effects of CO2 concentrations in the atmosphere1,2; but instrumental records only cover a few decades to a few centuries and it is essential that proxy data sources, such as pollen spectra from peats and lake sediments, be carefully interpreted as climate records. Several workers have shown statistically significant associations between the modern pollen rain and climatic parameters, an approach that by-passes the recognition of pollen/vegetation units. Statistically defined equations that associate abiotic and biotic elements are called transfer functions. We report here on the application of transfer function equations to nine middle and late Holocene peat and lake sediment sequences from northern Canada (Fig. 1).
    Type: Article , PeerReviewed
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 503-503 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the nineteenth century, when the British government felt threatened from abroad, the natural response was to build a few more battleships, Now, when most threats are economic rather than strategic, the temptation is to carry through yet another reorganization of the administration of science and ...
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 510-510 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR Reviewing H.B. Gibson's biography of Hans Eysenck (Nature 5 November, p.44) P.E. Bryant writes: "He (Eysenck), more than anyone, shaped the development of clinical psychology in this country". This statement may be misleading to a readership as diverse as Nature's. In this context the term ...
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 511-512 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE precise mechanism of the neural control of the pituitary-adrenocortical system has been the holy grail of neuroendocrinologists for the major part of this century, and it is small wonder that the recent paper in Science1 by Wylie Vale, Joachim Speiss and Catherine and Jean Rivier (and see also ...
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 514-515 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] UNTIL recently many would have argued that 2,3,7,8-tetrachlorodibenzo-/7-dioxin (TCDD) a toxic contaminant produced in the manufacture of 2,4,5-trichloro-phenol was not metabolized in animals. The chemical seemed to require no metabolic activation to make it more toxic and did not appear to be ...
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 518-519 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DURING the 1960s and early 1970s it became possible to measure the elemental composition of the cosmic radiation in fine detail. This achievement constituted a major breakthrough towards recognizing the elusive origin of the high energy particles that pervade the Galaxy. In particular, it was found ...
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  • 8
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Observations of two stellar occultations by Neptune were used to search for possible equatorial and polar rings. No ring occultation events were identified, and an upper limit of 0.07 can be placed on the optical depth of any equatorial rings greater than 5 km wide with radii greater than 31,400 ...
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 532-536 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] As a result of the regular arrangement of peptide dipoles in secondary structure segments and the low effective dielectric constant in Hydrophobic cores, the electrostatic energy of a protein is very sensitive to the relative orientation of the segments. We provide here evidence that the alignment ...
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 544-546 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In interferometry experiments with non-zero spin particles interesting effects arise due to the wave function (or probability amplitude) of the interfering beams being nonscalar. One effect concerns the sign change of a spinor wave function under 27T-rotations1'2. This was verified by neutron ...
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