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  • Nature Publishing Group  (3,428)
  • 1970-1974  (3,428)
  • 1935-1939
  • 1930-1934
  • 1973  (3,428)
Collection
Publisher
Years
  • 1970-1974  (3,428)
  • 1935-1939
  • 1930-1934
Year
  • 1
    Electronic Resource
    Electronic Resource
    Pest Management in Australia (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 269-271 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] AUSTRALIA differs from other major land masses in that, almost without exception, its domestic animals and crop plants have been introduced from other countries. About half of its 600 most important insect pests and most of its weeds have also been introduced, often without the natural enemies ...
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    URL: http://dx.doi.org/10.1038/246269a0
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  • 2
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    Solar Power in the Australian Energy Scene (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 271-273 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE primary energy pattern in Australia is undergoing a very significant change due mainly to the discovery in 1966 in Bass Strait of oil and gas in commercial quantities. Prior to that the search for oil had been going on for a long time with some minor successes, but it was the Bass Strait strike ...
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  • 3
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    Sequence of Events in Plasma Membrane Assembly during the Cell Cycle (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 291-295 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Major components of the plasma membrane double during interphase. Some minor components also double, but others show fluctuations. Decreased expression by immune cytolysis of H-2 antigenicity during interphase is explicable in terms of decreased membrane fragility. These results are compatible with ...
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  • 4
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    Attainment of Gigavolt Potentials by Magnetic Insulation (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 299-300 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The inner conductor is not permitted to have any physical support in relation to the outside structure and thus has to be levitated. This can most easily be done by making the inner conductor or certain parts of it from a ferromagnetic substance. A properly applied auxiliary external ...
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    URL: http://dx.doi.org/10.1038/246299a0
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  • 5
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    Dividing and Developing (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 317-317 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THIS volume contains twenty-six papers concerned with some biological aspects of cell division and the cell cycle in plants, protozoa, and some species of multicellular animals. The editors state in their preface that the book is intended to complement that of Mitchison (The Biology of the Cell ...
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  • 6
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    Silica: Light Thrown on Charge Transport (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 190-191 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE observation of currents in insulators has always been a difficult task and thus it is only recently that it has been confidently asserted that electrons travelling in solids with wide band gaps do so according to roughly the same laws as those in semiconductors, and that, given the necessary ...
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  • 7
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    Animal Sociology (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 232-232 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THIS book, which grew out of a course of lectures given to psychology students at the University of Reading, touches upon a wide range of behavioural phenomena which can loosely be described as social in the sense that in some way they concern interactions between animals. There are descriptions of ...
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  • 8
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    Bird Biology (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 233-233 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SOME ten years ago, A. J. Marshall edited two volumes on the biology and physiology of birds. This volume is the second in a series of three which provide an updated and much needed replacement for Marshall's work. There are new editors, almost all new authors, a different organisation, and more ...
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  • 9
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    Ethylene in Plants (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 234-234 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THERE was a time when auxin was invoked as the master controller of all plant growth and developmental processes. It now seems that ethylene, whose dramatic effects on plants have been known for more than 70 years, is rapidly slipping into that role. In the past 10 years there has been a veritable ...
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  • 10
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    Erratum (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 236-236 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN the bibliography of the book Notes on the History of Nutrition Research (reviewed Nature, 245, 442; 1973) the publisher and prices should have read: (Huber: Stuttgart, Berne and Vienna, 1973.) 42 Sw. fr.; 38 ...
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  • 11
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    100 Years Ago (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 113-113 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WE learn from the Journal of the Society of Arts, that one of the first results in the rise of the price of coal has been the formation of a company in France, whose object is to utilise the power of the ocean tides on the French coast by proper machinery. The first experiment is to be made at St. ...
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  • 12
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    Environment: Environmental Protection (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 117-117 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE House Appropriations Committee has handed both the Environmental Protection Agency and the National Academy of Sciences a political hot potato which could prove embarrassing. The committee passed a bill which includes $5 million for the EPA to let a contract with the academy to carry out ...
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  • 13
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    Evolution of Insect Wings and Flight (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 127-129 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Disputes during the nineteenth century as to whether insect wings originated from gills or from paranotal lobes ended with almost universal acceptance of the paranotal theory. Sir Vincent Wiggles-worth, however, here gives evidence that the thoracic styli were perhaps the precursors of insect ...
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  • 14
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    Smoking and Pregnancy (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 177-177 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR,-Some of us decline to accept Dr Goldstein's own evaluation of his criticisms1"3. He states3, as an "undisputed" fact, that ". . . the distribution of birth-weights for babies of smokers is the same as that for non-smokers except that it is shifted downwards by about 170 g". (This is known as ...
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  • 15
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    Liquid Helium: New Excitation (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 66-66 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A NEW type of elementary excitation, christened the 3He roton, may exist in liquid 3He-4He mixtures according to a calculation by Stephen of Rutgers University and Mittag of the University of Miami, published in a recent issue of Physical Review Letters (31, 923; 1973) and based on a suggestion ...
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  • 16
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    The Problem of Compensation for Antenatal Injuries (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 54-55 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] I WISH to discuss certain points about Working Paper No. 47 of the Law Commission (January 1973) on injuries to unborn children. This proposes statute law for liveborn children suffering antenatal injury to claim damages where negligence of another person can be proven. The concern by lawyers for ...
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  • 17
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    Ribosomal RNA: Control of Synthesis (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 60-61 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ALTHOUGH the multiple ribosomal RNA genes (rDNA) of Xenopus laevis are probably the best characterised of any eukaryotic organism, very little is known about the control of rRNA synthesis. The genes are linked at one locus which is very closely associated with the nucleolus organiser region, since ...
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  • 18
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    Herbaria: Data Processing (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 62-62 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ELECTRONIC data processing (EDP) has hitherto been used in very few herbaria, mostly for comparatively small projects, and its scope in the larger herbaria, particularly in Europe where most are located, has been hardly considered. An international meeting at the Royal Botanic Gardens, Kew, from ...
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  • 19
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    Plate Tectonics: Subduction Heating (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 64-65 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ACCORDING to the hypotheses of the new global tectonics, oceanic trenches, where colder oceanic lithosphere descends into the warmer underlying mantle, should be regions of relatively low surface heat flow; and this prediction is generally confirmed by observa-r tion. But observation also shows ...
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  • 20
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    Structures in Cells (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 109-109 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE three-dimensional structures of subcellular biological systems and mechanisms for their biosynthesis are now elements of perhaps the most important next stage in molecular biology. The problem is ripe for attack and the timing and choice of this subject for the first John Innes Symposium (held ...
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  • 21
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    Phytopathology: Find the Expert (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 66-66 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Do you want to contact an expert on phytobacteriology, or check the address of a rival mycoplasma fiend who may be duplicating your work? The problem may be solved by reference to the World Directory of Plant Pathologists (edited by Fran. E. Fisher). Perusal of this handy tome may reveal that a ...
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  • 22
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    Geomorphological Dating of Cave Openings at Makapansgat, Sterkfontein, Swartkrans and Taung (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 75-79 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Cave opening at several of the South African hominid sites occurred through incision and valley widening in one current erosion cycle. Measurements of rates of cyclic nickpoint migration and valley flank recession make possible time-place transpositions, and the approximate date of cavern opening ...
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  • 23
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    Implications of the New Age Estimates of the Early South African Hominids (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 79-83 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Divergences exist between recent faunal and geomorphological estimates of the age of several South African australopithecine sites. New stratigraphic evidence from Sterkfonteinand Makapansgat suggests a lengthy lapse of time between cave opening and deposition of dated fossil bones, and thus ...
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  • 24
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    Ionospheric Effects of Cosmic γ-ray Bursts (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 83-84 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The calculations reported here were carried out by means of a Monte Carlo code which was developed to calculate X-ray and y-ray transport in a model atmosphere. The model used is based on the 1962 COESA standard atmosphere2. In the code it is described by 120 plane parallel layers, with each layer ...
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  • 25
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    Slightly Deleterious Mutant Substitutions in Evolution (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 96-98 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fitch and Margoliash6 have shown that the frequency of double fixation of mutants in a leg of their cytochrome c phylogenetic tree is higher than predicted from chance. The most plausible interpretation is that the first mutant is slightly deleterious and that the second compensates for the first. ...
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    Antitumour Activity of Iodine in Acidic Medium with Calcium (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 98-100 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The importance of calcium ions in controlling the permeability of cells6 and in regulating cellular activity7 has been established. The penetration of isolated ascites tumour cells by calcium ions depends on the metabolic state of the cells8; calcium accumulation, like iodine accumulation, requires ...
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    Elevated Erythrocyte Calcium in Sickle Cell Disease (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 105-106 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] From this evidence, and the fact that sickle cells, especially in the deoxygenated, sickled state, are excessively permeable to cations such as sodium and potassium9"11, we postulated that increased intra-erythrocytic calcium concentrations might occur in Hb SS disease. This accumulation of calcium ...
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    The Excitable Heart (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 108-108 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] NEW blood has kept the field of cardiac electrophysiology fertile and by drawing upon it Professor De Mello has ensured the success of his enterprise, although the absence of a preface is a pity. Those starting a career in cellular physiology and biophysics, and to whom the book is addressed, need ...
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    CO 2 Pollution of the Sea (1973)
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 111-111 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR,-A recent communication (Nature, 245, 20; 1973) suggested that a slight increase in partial pressure of CO2 would shift the HCO3 equilibrium system far enough to prevent secretion of shells in marine corals and molluscs. The lower carboniferous shells were secreted when the partial pressure of ...
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    Energy: Conserving Energy (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 406-406 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WHILE the United States Federal Government is struggling to meet the long term challenge posed by the energy crisis, the American Association for the Advancement of Science has been organising a series of workshops to discuss what can be done in the short term by individual states. The first of ...
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    Viruses: SV40 Defectiveness (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 409-410 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT has been known for some time that when SV40 virus is serially passaged, undiluted, in BSC-1 monkey cells, virions are produced which contain circular DNA molecules consisting of host and viral sequences (Lavi and Winocour, J. ViroL, 9, 309; 1972). This suggests that recombination between host ...
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    Terminator Anticodons in 18S rRNA (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 411-411 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN Nature New Biology next Wednesday (October 31) Dalgarno and Shine report that they have sequenced the eight nucleotides at the 3' end of 18S RNA from yeast and Drosophila by step wise degradation, followed by condensation with labelled isonicotinic acid hydrazide, and compared them with the same ...
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    P Wave Velocities and Plate Motions (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 414-414 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ALTHOUGH the precise mechanism by which horizontal lithospheric motion takes place is still uncertain, it is generally agreed that the lithosphere is able to move by virtue of the low velocity channel, or asthenosphere, which underlies it. The asthenosphere is the weak zone which reduces the ...
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    Simulating the Obvious (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 421-421 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE work of Meadows and his colleagues, sponsored by the Club of Rome and published in The Limits to Growth, has been so riddled with criticism (for example from the World Bank and from a group of workers in the University of Sussex) that one opens another book by these authors with doubts about ...
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    Bomber Fly (1973)
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    Nature 245 (1973), S. 425-425 
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    Notes: [Auszug] Chinese poster of 1937 warning of the dangerous diseases carried by flies, in Flies and Disease (Volume 2), by Bernard Greenberg (Princeton University: Princeton, August 1973, ...
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    Magnetism (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 427-427 
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    Notes: [Auszug] MAGNETISM is a fundamental part of most topics in solid state physics. It is usually recognized in the form of ferro-, ferri- or antiferromagnetism, but probably less easily so in the case of spin-waves or domain structures. Such bulk properties describe ordered magnetic systems but any real ...
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    Aerosols and Atmosphere (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 428-429 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE study of aerosols is now a science in itself. Each year one sees an increasing number of papers concerned with the formation, properties, behaviour and effects of aerosols. This follows from an increased awareness of the impact of aerosols on the environment and their involvement in varying ...
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    Tortured Tree (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 426-426 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] One of the rare Tortuosa beeches, whose malformations may have been caused by radioactivity from meteors, is illustrated in The International Book of Trees by Hugh Johnson (Beazley: London, October 1973, ...
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    Solid Batteries (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 428-428 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE key to many problems in the management of electrical energy lies in storage. For example, we would long ago have dispensed with the burning of petrol in cars if enough energy for long runs could be carried in batteries weighing about a hundredweight; the battery, again, is the most inconvenient ...
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    Electrostatics (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 429-429 
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    Notes: [Auszug] THIS book, written by eighteen contributors, is intended to be a unified and complete survey of modern electrostatics, but it is not clear at whom it is aimed. The quality of the writing varies considerably, and the language is often woolly and obscure. Perhaps it is meant as a eulogy on ...
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    Eight-legged Beasts (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 437-438 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A MAJOR fascination in the study of invertebrate zoology resides in the small groups. Each represents an experiment in the disposition and functional interplay of the essential organ systems and each has been successful?up to a point. It may have had its period of success only to be superseded and ...
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    Physical Dogma (1973)
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    Nature 245 (1973), S. 434-434 
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    Notes: [Auszug] THIS book does not really serve a useful purpose. One may agree with the author that in many respects science is far less rational and far more reactionary than one would wish it to be. As Planck put it in his autobiography: "New ideas are finally accepted, not because their opponents are convinced ...
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    Solar Radiation Changes and the Weather (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 443-446 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It is suggested, on the basis of pressure measurements, that energetic solar particles which penetrate the atmosphere in the north Atlantic region may be responsible, in some unknown manner, for certain meteorological ...
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    Radiocarbon Dating from Ogof-yr-Ychen, a New Pleistocene Site in West Wales (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 453-454 
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    Notes: [Auszug] Fig. 1 Ogof-yr-Ychen, Caldey Island. Section of chamber 4 entrance and pit. Until 1969 these excavations had concentrated on seven caves or rock shelters and two open sites ; but since 1970 detailed investigations by two of us (Br James and M. D.) in conjunction with other workers on Caldey Island ...
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    Cyclic GMP and Cell Movement (1973)
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    Nature 245 (1973), S. 458-460 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The experiments described here suggest that the leukotactic response of polymorphonuclear leukocytes is stimulated by agents such as PMA, acetylcholine and car-bamylcholine (Cch). Imidazole, a compound known to produce cholinergic-like effects in a variety of tissues3, also enhanced leukotactic ...
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    Free Energy of Non-isothermal Systems (1973)
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    Nature 245 (1973), S. 457-458 
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    Notes: [Auszug] First, I consider whether the maximum work is a thermodynamic function of state. That is, when a system in a particular environment passes from one defined state to another, is the maximum work that could be obtained, wmax*, always a fixed quantity independent of the path followed? It is well ...
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    Role of Calcium in the Seasonal Modulation of Pacemaker Activity in a Molluscan Neurosecretory Cell (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 462-464 
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    Notes: [Auszug] We used a neurosecretory cell (cell No. 11 according to Gainer's nomenclature6-8) in specimens of the land snail Otala lactea, which had either been in aestivation for more than 2 yr ('aestivated') or were fully activated, or were in a transitional state between aestivation and activity. Hibernated ...
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    Cell Genetics: Reversion during Fusion (1973)
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    Nature 245 (1973), S. 354-355 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ONE of the most useful techniques in cell genetics in the past year or so has been the fusion together of two cells, one of which lacks some enzyme which is possessed by the other, to form a hybrid in which the enzymatic activity must therefore be specified by the chromosomes of only one parent. By ...
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    Nuclear Physics: Nuclear Sizes (1973)
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    Nature 245 (1973), S. 357-357 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE sizes of atomic nuclei are deter mined by the spatial distributions of their neutrons and protons. The dis tribution of the protons is quite well known because the electromagnetic interaction is well understood, and many studies of electron elastic scattering and of muonic X rays have ...
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    Multiple Polymorphism in Relation to Histocompatibility Antigens (1973)
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    Nature 245 (1973), S. 359-361 
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    Notes: [Auszug] The extreme polymorphism of the histo-compatibility antigens may have evolved to ensure that the body of an individual is not invaded by cells from another individual of the same ...
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    Dynamically Plausible Hypotheses of Lunar Origin (1973)
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    Nature 245 (1973), S. 367-369 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] All those who hypothesise Capture acknowledge that it is an improbable event. So mostf~7 suggest that the Moon was made somewhere near the Eajrth, which seems contrary to the thermochemically inspired v^ish to make the Moon in a different part of the Solar System. All but one4-7, however, ...
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    Magnetic Telechemistry of Oceanic Crust? (1973)
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    Nature 245 (1973), S. 373-375 
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    Notes: [Auszug] The answer is yes, in view of the higher Ti and Fe in the plume-derived ocean crust. Because oceanic magnetic anomalies are essentially the result of thermoremanent magnetisation carried by finely disseminated titanomag-netite10, a basalt crust with higher Fe and Ti should have higher amplitude ...
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    Delayed Effect of Light on the Mosquito “Clock” (1973)
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    Nature 245 (1973), S. 384-385 
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    Notes: [Auszug] After a change in the light regime from LD 12 :12 (50 lux) to DD, with light off at the normal time, the period of the first cycle in DD is about 24 h (mean?24.1 h, s.d.=0.6 h, n=42). The rhythm then seems to free-run with a period of between 22.5 and 23 h. When the final light period is prolonged ...
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    Gibbs Fracture Zone Extends Hercynian Front (1973)
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    Nature 245 (1973), S. 357-357 
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    Notes: [Auszug] THE Gibbs fracture zone, which crosses the present north Atlantic Ocean at about 53 N, is apparently a transform fault which offsets the mid-Atlantic ridge axis by about 350 km in a roughly east-west direction. Westwards from about 35W longitude to the North American continental margin, the frac ...
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    Does the Mantle Roll? (1973)
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    Nature 245 (1973), S. 361-363 
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    Notes: [Auszug] Comparison of plume traces with palaeomagnetic data from lithospheric plates for the past 50 m.y. suggests that the mantle has rolled about its own independent axis within an outer lithospheric shell which as a whole is fixed in respect to the Earth's spin ...
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    Burning Waste Gas in Oil Fields (1973)
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    Nature 245 (1973), S. 375-376 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Apparently, the burning of gases has been a standard practice since the earliest days of the oil industry. I witnessed it when I was employed in the oil fields in April 1933, aviators travell of Montana in 1953. Earlier, ng by way of North Africa on their way to fly over Mount Everest, described ...
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    Bacteria Swim by Rotating their Flagellar Filaments (1973)
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    Nature 245 (1973), S. 380-382 
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    Notes: [Auszug] The idea that the flagellar filaments might rotate relative to the cell body as rigid or semi-rigid helices has appeared intermittently in the literature, but a convincing case for such a model has not been made. Rigid rotation was noted as a possibility by Stocker in 19564. Doetsch argued for it ...
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    Induction of Liver Tumours in Rats by a Single Treatment with Nitroso Compounds given after Partial Hepatectomy (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 386-388 
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    Notes: [Auszug] Surgical removal of 65% of the liver causes a wave of mitoses in hepatocytes of the liver remnant5. A single treat ment with DMN during this period of restorative hyperplasia induced a 40-60% incidence of liver cell cancer6. The experi ments described here show that one injection of DMN or of ...
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    Anaerobiosis in the Overwintering Beetle Pelophila borealis (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 388-390 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In these conditions the beetles are frequently enclosed by ice for several months. Their survival seems to depend not only on a sufficient degree of cold-hardiness1, but also on their ability to tolerate an oxygen deficiency during ice enclosure. For insects overwintering in habitats of this kind, ...
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    Modern Crystallography (1973)
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    Nature 245 (1973), S. 393-393 
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    Notes: [Auszug] THESE two books aim to bring crystallographers up to date in the application of their art to the discovery of the arrangements of atoms in crystals: Milburn's book on the methods, Robert son's on the results in recent years. Milburn describes the experimental methods, both photographic and photon ...
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    Inorganic Spectra (1973)
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    Nature 245 (1973), S. 395-396 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THIS book consists of two parts, the first of wrjich gives a resume of the relevant thjeory, and the second and longer part of which is a review of the literature on the vibrational spectra of inorganic Compounds. There are also appendices (group character and corre lation tables and so on) and ...
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    Transcription Unit (1973)
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    Nature 245 (1973), S. 397-397 
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    Notes: [Auszug] SIR,?During the proceedings of the Thirteenth International Congress of Genetics in Berkeley (August 20-29, 1973) it became apparent that there is now a definite need to have operational terms for the units of transcription and translation, particularly in eukaryotic systems. I suggest the terms ...
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    Corrigendum (1973)
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    Nature 245 (1973), S. 398-398 
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    Notes: [Auszug] IN the article "New Antibacterial Agent via Photofluorination of a Bacterial Cell Wall Constituent" by J. Kollonitsch et al. (Nature, 243, 346; 1973) the first sentence in paragraph 5 should read "The assigned structure is in agreement with: (a) PMR spectrum (60 MHz; D2O/DC1): two multiplets (CH2) ...
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    Erratum (1973)
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    Nature 245 (1973), S. 398-398 
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    Notes: [Auszug] IN the article "Embryonic and Adult Chymotrypsins of Chicken Pancreas", by A. Cohen and R. G. Kulka (Nature, 244, 97; 1973), line 3 of the legend to Fig. 1 should read "... chymotrypsinogens from a, 19-d-old embryo . . ." instead of "... 10-d-old ...
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    Intraplate Earthquakes—Thrusting Everywhere (1973)
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    Nature 245 (1973), S. 285-286 
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    Notes: [Auszug] THERE cannot be a reader of Nature who doesn't know by now that earthquakes mark boundaries between the rigid plates which cover the Earth's surface. Yet there are still a few earthquakes which do not lie on or near these boundaries ; for instance, in Eastern North America there have been large ...
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    Release of Messenger RNA from Nuclei (1973)
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    Nature 245 (1973), S. 288-288 
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    Notes: [Auszug] IT is known that the release of messenger and ribosomal RNA from nuclei in vitro is dependent on a supply of energy and on non-dialysable components from the cytosol. The results of experiments reported by Schumm et al. in Nature New Biology next Wednesday (October 17) define further the nature of ...
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    Formation of Cosmic Formaldehyde (1973)
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    Nature 245 (1973), S. 290-290 
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    Notes: [Auszug] THE discovery of the first organic molecules in space, nearly five years ago, took most astronomers by surprise because it seemed unlikely that molecules could form and survive in the harsh environment of interstellar space. But there are now twenty-six molecular species identified with reasonable ...
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    Nuclear Structure: Heavy Ions (1973)
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    Nature 245 (1973), S. 292-292 
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    Notes: [Auszug] THE increasing interest in the use of accelerated beams of heavy ions was highlighted at a nuclear structure conference sponsored by the Institute of Physics and held at the University of Manchester from September 5 to 7. The contribution made to the understanding of the structure of the nucleus ...
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    Infrared and X-ray Variability of Cyg X-3 (1973)
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    Nature 245 (1973), S. 302-304 
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    Notes: [Auszug] Here we describe the coordinated X-ray and infrared observations at Cyg X-3. These observations have led to the discovery of a synchronous 4.8-h periodicity in the flux density of the infrared source. This uniquely associates the X ray with the infrared source, and hence, through the positional ...
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    Measurements in situ of Nitric Oxide in the Stratosphere between 17.4 and 22.9 km (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 310-311 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The details of the instrument design are given in réf. 1. The principle of the method is based on the chemiluminescence produced when excess ozone is added to a flow of gas containing nitric oxide. The intensity of the radiation detected by the photomultiplier viewing the reaction chamber is given ...
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    Analysis of Virus Replication in Ageing Human Fibroblast Cultures (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 316-319 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Orgel6 suggested that accumulating errors at the level of translation could eventually lead to an error catastrophe, and that such effects might be involved in ageing cells. Holliday and Tarrant7 and Lewis and Tarrant8 demonstrated that diploid human fibroblasts accumulate heat-labile enzymes ...
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    Methylguanidine, a Naturally Occurring Compound showing Mutagenicity after Nitrosation in Gastric Juice (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 325-326 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1 Photograph of spot tests demonstrating mutagenicity of nitrosated methylguanidine. Approximately 1 x 108 Salmonella histidine-requiring mutants (TA1535) were plated on minimal agar (30 ml in 90 mm Petri plate) with 0.1 ml of nutrient broth, 0.1 µmol of histidine and 0.1 µmol of ...
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    Social Control of Adult Size in Males of Xiphophorus variatus (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 332-335 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] In addition to determining the size distribution within a group of adult males, these interactions also determine the distribution of the yellow or red pigmentation (YR coloration) that appears in the dorsal and caudal fins of some mature males. YR coloration develops only in the largest adult male ...
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    Sex in the Making of Man (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 339-339 
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    Notes: [Auszug] DARWIN'S The Descent of Man and Selection in Relation to Sex contained, as its name suggests, two largely independent works. The two parts are held together by Darwin's conviction that many of the differences between the races of man cannot be explained as adaptations to different environments (and ...
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    Phonons (1973)
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    Nature 245 (1973), S. 340-340 
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    Notes: [Auszug] THIS book is based upon an excellent idea : to present in one volume most of the aspects of phonon physics ; and so it is even more restricted than Ziman's Electrons and Phonons. As a reference book for undergraduates, graduate students, as well as research workers, it presents a very convenient ...
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    Conferences in Russia? (1973)
    [s.l.] : Nature Publishing Group
    Nature 245 (1973), S. 343-343 
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    Notes: [Auszug] SIR,?Two events occurred this summer which, taken together, should be of particular concern to geneticists, as well as many other scientists. On July 16 the Supreme Soviet deprived Dr Zhores Medvedev of his Soviet citizenship, thus preventing his return from Britain to the USSR. On August 23 it was ...
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    Professor N. K. Adam (1973)
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    Nature 245 (1973), S. 344-344 
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    Notes: [Auszug] NEIL KENSINGTON ADAM, FRS, who died in Southampton on July 19, was born 81 years ago, son of Dr James and Mrs Adela Marion Adam of Cambridge, and eldest of a family of three?his brother Arthur died in the 1914-18 war; his sister Barbara (Lady Wootton) survives him. After attending Winchester he ...
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    European Science Foundation Formed (1973)
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    Nature 245 (1973), S. 228-229 
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    Notes: [Auszug] EVEN the most confirmed sceptics must be impressed by the speed with which the academies and research funding bodies of Europe have set up a European Science Foundation. At a two day meeting in Paris last week fifty western European academies and research councils* decided in principle to set ...
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    Soviet Science: Quick Clay Tube (1973)
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    Nature 245 (1973), S. 228-228 
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    Notes: [Auszug] THE most spectacular achievement of the reign of Peter the Great was the building of his new capital in the Neva marshlands. The lack of a firm subsoil, however, is a considerable problem to the civil engineering planners of modern Leningrad but now one major difficulty at least has been met with a ...
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    Nerve Gas—The Army's Latest Weapon (1973)
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    Nature 245 (1973), S. 231-232 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ALTHOUGH President Nixon announced, in November, 1969, that the United States would never be the first to use chemical weapons in a war, the Department of Defense has carried on an extensive research and development programme on nerve gases and other chemical agents. The latest fruit of the Army's ...
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    When did Plates Start Breaking Up? (1973)
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    Nature 245 (1973), S. 233-234 
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    Notes: [Auszug] ONE of the central pillars of geology is the doctrine of uniformitarianism, which goes back to the 1830s and Lyell. The concept that geological processes have been of much the same intensity throughout the whole of geological time is very simple. There is wide consent on uniformitarianism and ...
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    Haemoglobin: Quaternary T, Tertiary r (1973)
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    Nature 245 (1973), S. 234-234 
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    Notes: [Auszug] INTEREST in the details of the structural differences between unligated high-spin deoxyhaemoglobin in the T (tense) state and the ligated oxy and met derivatives in the R (relaxed) state continues to stimulate further investigations. Anderson U. molec. BioL, 79, 495; 1973) now describes a technique ...
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    Prolactin Secretion is Specifically Inhibited by Nickel (1973)
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    Nature 245 (1973), S. 330-332 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] During the purification of PIF, attempts were made to elucidate the nature of the active substance. Hydrolysis of purified material of certain Chromatographie fractions with HC1 or digestion with sulphuric acid failed to abolish the inhibitory action on PRL release in vitro. This suggested that an ...
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    Turning the Left Cheek Examined using Modern Photography (1973)
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    Nature 245 (1973), S. 338-338 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1 Left/Right Alignment in Yearbook Photographs Left side of Left preference Sex face exposed Right / /o P* difference CWC, senior males2 CWC, senior females 18 6 12 13 60 32 NS NS } 〈 0.05 CWC, faculty and staff males CWC, faculty and staff females 6 ...
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    Ethanol Oxidation by Human Erythrocytes (1973)
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    Nature 245 (1973), S. 266-267 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We were originally interested in the stability of ethanol in blood samples obtained as a result of current legislation for the control of the drinking driver. The appropriate legislation in this country is the Road Safety Act 1967, now consolidated in the Road Traffic Act 1972, which makes it an ...
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    Facts of Malnutrition (1973)
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    Nature 245 (1973), S. 274-275 
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    Notes: [Auszug] "ONE and a half billion people are undernourished, and the diets of an additional one billion are deficient in one or several key nutrients" (page ix). "Recent studies have established the prevalence of hunger and malnutrition among ten or even more millions in the United States" (page 55). ...
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    Pacific Arts of Navigation (1973)
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    Nature 245 (1973), S. 273-274 
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    Notes: [Auszug] ALMOST from the moment of their discovery by Europeans the islands of the South Pacific have been the object of unflagging fascination. The idea of an earthly paradise, free of the constraints and artificialities of so-called civilization, has exerted a powerful attraction, while at the same time ...
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    Organizing Books (1973)
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    Nature 245 (1973), S. 276-276 
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    Notes: [Auszug] THE Library of Congress system, devised for the organization of knowledge in the collections of that library, consists of two parts: a classification scheme for the arrangement of books and a subject headings list for the arrangement of alphabetical catalogues. Nowadays we are aware that such a ...
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    Glaxo Awards: Maddoxian Success (1973)
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    Nature 245 (1973), S. 176-176 
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    Notes: [Auszug] THE eighth annual Glaxo Award for science writing in British national journals and newspapers has been made to Mr John Maddox, former editor of Nature and now chairman of Maddox Editorial. This year, three other awards have been made, each, like the national award, worth £500: for radio and ...
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    Indian Astronomy: Forming a Central Voice (1973)
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    Nature 245 (1973), S. 176-176 
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    Notes: [Auszug] AT their fourth attempt, Indian astronomers have founded a national astronomical society. The Astronomy Society of India, as it has dubbed itself, came into being late last year and has now acquired 150 members throughout India. The society, a private one financed entirely from its members ...
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    Soviet Union: Support for Dissent (1973)
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    Nature 245 (1973), S. 178-178 
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    Notes: [Auszug] SOVIET physicist Andrei D. Sakharov and other dissident intellectuals in the USSR received their first official support from the United States Congress last week. A resolution, roundly condemning the ?campaign of the Soviet government to intimidate those who have spoken out against repression of ...
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    Genetics: DNA Dominant of Berkeley, California (1973)
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    Nature 245 (1973), S. 183-184 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] CHROMOSOMAL organization may still be far from a total solution, but geneticists who attended the quinquennial international congress in Berkeley (August 20?29) went away confident that at least some of the finer details would be resolved by the time they met again in Moscow. DNA Redundancy The ...
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    Molecular Model for Elastin Structure and Function (1973)
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    Nature 246 (1973), S. 461-466 
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    Notes: [Auszug] Amino acid sequences in elastin contain striking patterns. These are interpreted in terms of possible molecular conformations, and an ‘oiled coil’ model is proposed to explain the protein's elastic ...
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    Rainfall Patterns and General Atmospheric Circulation (1973)
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    Nature 245 (1973), S. 190-194 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] This article presents an analysis of the rainfall records of the Mediterranean and the Middle East and of the Sahel zone and north-west India from the beginning of this century and relates rainfall fluctuations to changes in the general circulation of the atmosphere. Probable rainfall trends during ...
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    γ-ray Bursts and the Diffuse Flux of Cosmic X-rays (1973)
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    Nature 245 (1973), S. 201-202 
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    Notes: [Auszug] Between July 1969 and July 1972 Klebesadel et al. observed sixteen bursts each with an integrated intensity at the Earth greater than 10?5 erg Cm?2 in the spectral region between 0.3 MeV and 1.5 MeV. In the same energy interval the diffuse flux has an intensity of 8x10?8 erg cm?2 s?1 sr?1. In the ...
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    Possible Role of MSH in the Mammal (1973)
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    Nature 245 (1973), S. 207-209 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the first series of experiments we examined the effects of neurointermediate lobe hormones on sebum secretion. Adult female Wistar rats received subcutaneous injections of the various hormones twice daily in 0.9% NaCl and after 2 weeks the rate of sebum secretion was measured2. Daily treatment ...
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    Prostaglandin Production and Bone Resorption by Dental Cysts (1973)
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    Nature 245 (1973), S. 213-215 
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    Notes: [Auszug] Dental cysts were carefully enucleated from anaesthetized patients and quenched in hexane and dry ice. Weighed samples were tested for their content and ability to synthesize prosta-glandin-like material by homogenizing for 30 s (Silverson homogenizer) in either Krebs solution alone, or Krebs ...
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    The Giant Panda is a Bear (1973)
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    Nature 245 (1973), S. 218-220 
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    Notes: [Auszug] We have previously approached problems of this sort in primates3?5, other carnivores6, and frogs7 by immunological studies of albumin evolution. Blood and tissue samples from the giant panda, Chi-Chi, were made available by Drs Brambell and Keymer, subsequent to her death in London in July 1972. ...
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    People Need Protein (1973)
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    Nature 245 (1973), S. 223-223 
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    Notes: [Auszug] A GREAT deal has been published in the last few years on the subject of proteins in human nutrition, and my first reaction to the title of this book was that it was unlikely to contain much that is interesting or new. I soon found this impression to be entirely wrong: the book is a most valuable ...
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    Inconstant Stars (1973)
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    Nature 245 (1973), S. 225-225 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] VARIABLE star research is one of the most active fields of astronomy. Observations and theories of stellar pulsation are fundamental to our knowledge of stellar structure. Much work on little understood phases of stellar evolution centres on variable star studies and these objects retain their ...
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