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  • Nature Publishing Group  (17.607)
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  • 1980-1984  (17.607)
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  • 101
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 307-312 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Protamine is shown to be a specific inhibitor of angiogenesis. The compound inhibits the capillary proliferation observed in embryogenesis, inflammation, certain immune reactions and the growth of solid ...
    Materialart: Digitale Medien
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  • 102
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 312-313 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Most previous observations of low-degree 5-min solar oscillations have been made with light integrated from the entire solar disk. Claverie et al.25 and Grec et al.1'6'7 have measured spectrum line shifts, and Deubner8 and Woodard and Hudson9 have measured radiant intensity. Such measurements are ...
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  • 103
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 313-315 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] A gradual decrease in the Earth's dipole moment at a rate of -5% per lOOyr has been established from observations of the geomagnetic field over the past 150 yr (ref. 3). Less well established but still generally accepted is the slow westward drift of certain features of the geomagnetic field at a ...
    Materialart: Digitale Medien
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  • 104
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 485-485 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] At a time when many groups are hard pressed to support large projects, a team from the UK Institute of Oceanographic Sciences (IOS) has just returned from a successful six-month cruise on which it earned more than £250,000 in foreign currency. IOS, now run by the Natural Environment Research ...
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  • 105
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 486-486 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR - In their article on malaria resurgence, Chapin and Wasserstrom1 claim that the agronomic use of DDT led to the development of DDT resistance in mosquitoes and hence to a resurgence of malaria in India. However, the main cause of the rapid increase in the consumption of insecticides in India ...
    Materialart: Digitale Medien
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  • 106
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 486-486 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR - Lin eta/.1 have recently described the "induction of helical liposomes by Ca2+ -mediated intermembrane binding", and the two types of helical liposomes discovered by Lin et al. were displayed on the cover of Nature of 11 March. The authors acknowledged the independent observation of ...
    Materialart: Digitale Medien
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  • 107
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 492-493 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SEVEN years ago I suggested that receptor-stimulated breakdown of phosphatidylinositol (PI) might be implicated in a general mechanism whereby activation of many cell-surface receptors brings about a rise in the cytosolic Ca2 + concentration in stimulated cells1. In recent months, two brief ...
    Materialart: Digitale Medien
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  • 108
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 319-321 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Fig. 1 Geological outlines of the Lhasa region: C, Carboniferous; P, Permian; T, Trias; J, Jurassic. K1} Takena Formation and lower-middle Cretaceous; K2, Lingzizong Formation; % granitic intrus-ives. Redrawn from geological map of Lhasa-Nyalam Area (Academia Sinica). YZ, Yarlung Zang Bo suture ...
    Materialart: Digitale Medien
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  • 109
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 512-514 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Reminiscences and Reflections by Hans Krebs collaboration with Anne Martin. Pp.250. ISBN 0-19-854702-1. (Oxford University Press: 1982.) £12.50, $19.95. ON 14 December 1932 the dean of the medical faculty of the University of Freiburg, Professor E. Rehn, reported to the Ministry of ...
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  • 110
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The study was carried out in four awake and four sleeping rhesus monkeys weighing 3.8-5.9 kg. They were surgically prepared several weeks before the experiment with electrodes implanted over the dura, in the orbital region and in neck muscles to permit electrical monitoring of cerebral, ocular and ...
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  • 111
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 491-492 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN 1972 the Mobil Oil Corporation synthesized and patented a range of very high Si/Al zeolites of which ZSM-5 is the best known example. This zeolite is a catalyst of great importance in the synthesis of petrol from coal (see Thomas et al., this issue of Nature p.530) and the Mobil patent is thus ...
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  • 112
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 520-521 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The Diseases of Civilisation. By Brian Inglis. Pp.371. ISBN 0-340-21717-0. (Hodder & Stoughton:1981.) £10.95. BRIAN Inglis is a respected journalist and author who has written several informative books on the history of medical practice, orthodox, homeopathic and supernatural. His ...
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  • 113
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 525-530 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Mantle fragments carried up from as deep as 200km by high-velocity eruptions show metasomatic introduction of volatile bearing minerals, before melting. The broad spatial and temporal distribution of alkaline magmatism shows that transfer of lithophile elements to the outer Earth by rising ...
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  • 114
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 537-540 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] A human tRNALys gene was converted to an amber suppressor by site-specific mutagenesis of the anticodon. The mutated tRNALys gene directed synthesis of a tRNA that suppressed the UAG amber nonsense mutation in β0 thalassaemia mRNA. Such genes may be ...
    Materialart: Digitale Medien
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  • 115
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 521-522 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Circle of Poison: Pesticides and People in a Hungry World. By David Weir Mark Schapiro Pp.99. ISBN 0-935028-09-9. (Institute for Food and Development Policy/Third World Publications: 1981.) $3.95, £2.50. Circle of Poison provides an insight into the process by which "someone in the ...
    Materialart: Digitale Medien
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  • 116
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 523-524 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Psychiatry Around The Globe: A Transcultural View. By Julian Leff Pp.204. ISBN 0-8247-1532-2. (Dekker: I98I.)SwFr. 58. THIS conspectus of mental illness "around the globe" has many of the attributes of those luxury cruises in which travellers combine the pleasures of exotic sightseeing with those ...
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  • 117
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 530-533 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] ‘Magic-angle-spinning’ NMR has revealed fresh insights into the atomic structure of the polymorph of silica, silicalite, which has exceptional absorptive properties. There is evidence that highly crystalline variants of silicalite contain 24 distinct tetrahedral locations, populated ...
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  • 118
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 540-542 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Although the problem of cosmic exergy creation has not been widely discussed, general answers have been given by Tolman3, and later by Layzer4 and Landsberg5. The solution is that during the expansion of the Universe, the conditions for local equi-librium changed with changing temperature and ...
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  • 119
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 547-549 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Fission products would comprise 40-90% of the HLW stream; the rest would consist of actinides and reprocessing elements. Most (-84%) of the fission products are totally non-radioactive and about half of the radioactive isotopes have half lives 〉105 yr. Only -2% have half lives 〈1 yr. Thus, 137Cs ...
    Materialart: Digitale Medien
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  • 120
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 553-556 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] McKenzie3 and Griggs4 investigated whether the maximum depth of earthquakes in subducted slabs is determined by a critical temperature. Although their results lent qualitative support to such a relationship their studies were based on limited data and hampered by great uncertainties concerning ...
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  • 121
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 558-561 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Four sites have been investigated (Fig. 1). Loch an t-Suidhe (grid ref. NM370215, altitude 30 m OD) on the Ross of Mull and Mishnish (grid ref. NM455565, altitude 120 m OD) to the west of Tobermory are infilled basins which lie outside the area affected by Loch Lomond Stadial ice, and contain a ...
    Materialart: Digitale Medien
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  • 122
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 345-346 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IT is curious the way that certain ideas and concepts in science exercise a wide and seemingly disproportionate fascination. These include the measurement paradoxes of quantum theory, and the origin of time's mysterious "arrow". Another is Mach's principle. Scientists return to it again and again. ...
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  • 123
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 585-585 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] In the article The highly polymorphic region near the human insulin gene is composed of simple andemly repeating sequences' by G. E. Bell et al, Nature 295, 31-35 (1982), the first three lines in Table 2 should read: Sequence Occurrences Allele 1 (AHil) Allele 2 (AHi2) a, ACAGGGGTGTGGGG 15 ...
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  • 124
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 572-574 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Human serum or plasma drawn in 10 mM EDTA was obtained from healthy donors. The complement pathway was activated by adding 2 g crushed inulin (Merck) to 100 ml serum followed by incubation at 37 C for 4 h. Activation by inulin leads to the formation of the macromolecular, non-cytolytic SC5b-9 ...
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  • 125
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 579-581 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The major D. virilis rDNA insertion has been described as being 10 kb long2'3'7, although it had been noted that it appears to be a tandem duplication2. Blot hybridizations using uncloned D. virilis rDNA digested with restriction enzyme combinations not previously used have now shown that 5-kb ...
    Materialart: Digitale Medien
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  • 126
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 584-585 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The action of oxaloacetate decarboxylase in catalysing the transport of Na4" ions across the cell membrane, thereby generating an electrochemical gradient of Na4" ions6'8, is in accord with its localization in the cell membrane and the specific requirement of Na4" ions for catalytic activity9"11. ...
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  • 127
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 386-386 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR - Having read more than once your leading article of 18 February (p.542) under the condemnatory title above, I am still puzzled that you provide no evidence, by way of argument, to justify the statement "The claim by the anti-nuclear movement of professional support is mostly a sham". The ...
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  • 128
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 387-390 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Public demand for totally safe drugs has led to excessive, costly and misleading toxicity testing. Such testing drains the resources which have been available for discovering much needed new drugs. Better public understanding of the limitations of toxicity testing and the hazards of medication is ...
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  • 129
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 394-395 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] ALTHOUGH the geomagnetic field was the subject of the earliest scientific treatise (Gilbert's De Magnete of 1600) it still remains the most enigmatic of all the Earth's properties. The situation is even more extraordinary when it is realized that it is also the only geophysical property whose value ...
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  • 130
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 173-173 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] In an unusual move, the British University Grants Committee is earmarking part of its annual budget to develop a specific topic biotechnology. The committee plans that £800,000 will be spent in each of the next three academic years on fostering biotechnology in a handful of universities. The ...
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  • 131
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 173-174 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The latest shot in the long-running battle between the pharmaceuticals industry and its detractors, in which the health problems of developing countries provide the battle-ground, has been fired by the Office of Health Economics (OHE). Despite its governmental sounding title and Whitehall address, ...
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  • 132
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 174-175 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Washington The major controversy in Washington this week has been the fate of the federal budget, as congressional leaders and the President joust with each other, leaving the outcome in doubt. No less concerned are the atmospheric scientists and oceanographers, especially those involved in ...
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  • 133
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 175-175 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The British anti-lead lobby is flying high. Results now emerging from recent studies seem to be persuading scientific and medical opinion that the government should take further action on the lead content of petrol. Total elimination was advocated by many of the participants at an international ...
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  • 134
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 446-448 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Confluent monolayers of N4TG1 cells were pretreated with ligand, the cells were then washed extensively with Dulbecco's phosphate-buffered saline (PBS) to remove any remaining bound ligand and membrane particulate fractions were prepared. Enkephalin receptor binding of these fractions was then ...
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  • 135
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] pHLA-1 (Fig. Ib, c) contains a 513-base pair (bp) cDNA insert which corresponds to the COOH-terminal 46 amino acids of an HLA class I heavy chain plus a portion of the 3'-noncoding region of the mRNA3. To make a preliminary estimate of HLA class I gene family size, genomic DNA was isolated from a ...
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  • 136
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 464-466 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Tight junction strands have been assumed to consist of a row of intramembrane particles representing integral membrane proteins which on fixation (glutaraldehyde 1-5%) and cryo-protection (glycerol 20-30%) form the continuous fibrils observed in standard freeze-fracture replicas5'7'12'16. This ...
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  • 137
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The isolation and characterization of the HPFH DNA clone will be described elsewhere (D.T., S.M.W. and B.G.F., in preparation). The restriction endonuclease map of the human non-a -globin gene cluster in the region of the HPFH deletion end point that was cloned is shown in Fig. 1. The deletion end ...
    Materialart: Digitale Medien
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  • 138
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 475-476 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Earth Sciences ACER, D.V. The Nature of the Stratigraphical Record. 2nd Edn. Pp.122. Pbk ISBN 0-470-27052-7. (Macmillan Press, London and New York: 1981.) Pbk £5.50. FAUST, S.D. and ALY, O.M. Chemistry of Natural Waters. Pp.399. ISBN 0-250-40387-0. (Ann Arbor Science/Butterworths: 1981.) ...
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  • 139
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 441-444 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] We have used the in vitro turtle (Pseudemis scripta elegans) olfactory bulb preparation11"13. The bulb was hemisected to facilitate the placement of stimulating and recording electrodes. Microelectrodes (140-180 MO) filled with 2M potassium methylsulphate were used to record intracellularly from ...
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  • 140
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 439-441 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The Ebenaceae, the persimmon and ebony family, represents one of the small group of families of angiosperms whose name is not based on a currently valid generic name. The familial name was derived from the pre-Linnaean Ebenus Rumphius. Generic limits within the family are the subject of some ...
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  • 141
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 448-450 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Treatment of porcine vimentin (55K) and desmin (52K) with the cysteine-specific reagent 2-nitro-5-thiocyanobenzoic acid (NTCB)9 yields two fragments (I and II)6. Whereas fragments I (37K) spanning the amino-terminal part of the two polypep-tides were not further explored, the two carboxy-terminal ...
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  • 142
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 471-472 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] DIET has always figured prominently in studies of the adaptation and evolution of mammals. This is to be expected, as most of the fossil record is composed of teeth and jaws, and feeding adaptations, aside from reproduction, are probably the most critical selective force in mammalian evolution. ...
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  • 143
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] A dispersed immunoglobulin pseudogene carries two hallmarks of RNA processing—spliced J and C regions and a poly (A)-rich tail. Its discovery strengthens the notion that processed genes are a significant feature of the mammalian genome and that genetic information can return to the genome via ...
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  • 144
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 334-338 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The ice sheet model1'2 predicts ice thickness in a cross-section running approximately north-south along a typical flow line (see Fig. 4). A vertically integrated approximate ice flow law is used with east-west flow neglected, which reduces the ice dynamics to a non-linear diffusion equation for ...
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  • 145
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 281-282 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Washington The Reagan Administration claims that it now has clear and scientifically verified data that the Soviet Union is providing toxic agents for military use by its allies in Laos and Kampuchea, and has circum-stantial evidence that the Soviet Union is itself using such weapons in ...
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  • 146
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 477-478 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Awards Professor George Weber (Laboratory for Experimental Oncology at Indiana University School of Medicine) has been elected for the 22nd Annual Clowes Award by the American Association for Cancer Research. The Institution of Geologists has presented the Aberconway Medal to Dr D. J. Burdon. ...
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  • 147
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 284-284 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR - Having recently received, for the first time, a communication from the Biblical Creation Society which contained quotations both from my letter to you of last July (Nature 30 July 1981, p.403) and from Dr O'Grady's comments on it (Nature 10 December 1981, p.510), I am reminded that a short ...
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  • 148
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] In agreement with recently proposed nomenclature11, the one of Ha-MuSV has been designated v-Ha-ras, while the two homologous rat cellular genes which have been molecularly cloned are called c-Ha-rasl and c-Ha-ras2 respectively. (In ref. 9, c-Ha-rasl is called sarcll and c-Ha-ras2, sard. Sarc IIis ...
    Materialart: Digitale Medien
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  • 149
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 374-375 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] As IN the workings of a Greek tragedy, there is nothing now to indicate the dis-comforts that lie ahead as heedlessly we burn fossil fuel and CO2 grows ever more abundant in the air. But this is not so for the small percentage of sulphur in these fuels; of all consequences of mankind's industrial ...
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  • 150
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 210-212 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] We first consider the initial concentrations of W and La in the Moon or in precursor lunar material. The presence of correlated pairs of refractory lithophile elements (for example, Ba/La) with Cl ratios in the Earth, Moon and eucrites argues strongly for a chondritic W/La ratio in the Moon or ...
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  • 151
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 212-213 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Although coherent Raman spectroscopy is experimentally demanding compared with spontaneous Raman spectroscopy it can enable experiments to be carried out that would otherwise be impossible. Perhaps the most spectacular results are those of Owyoung and co-workers1 who used Raman loss spectroscopy ...
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  • 152
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 188-189 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The British government's enthusiasm for new technologies, and its lack of enthusiams for the universities, was confirmed in last week's budget. While the universities can expect little respite from the austerity promised a year ago, the development of new technologies in industry is to receive a ...
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  • 153
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 189-190 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Washington Faced with increasingly intense competition from the Japanese electronics industry, a number of large American computer companies are developing plans to pool a proportion of their research resources into a new venture, provisionally called Microelectronics and Computer Technology ...
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  • 154
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 217-220 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Fig. 1 Sketch map showing lower to middle Palaeozoic petrotec-tonic assemblages of the US Cordillera. Generalized outcrops of Palaeozoic strata in the northern Sierra Nevada (NS) and eastern Klamath Mountains (K) are shown with no pattern within 'oceanic' assemblage. Data from refs 19, 38, 44. ...
    Materialart: Digitale Medien
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  • 155
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 222-223 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Several studies have indicated that the mean IQ is higher in Japan than in the United States and other advanced western nations1'2. The Japanese-American disparity has varied in different samples from 2 to 15 IQ points. The existing evidence suggests that the disparity is generally smallest among ...
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  • 156
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 366-368 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Several observations suggest a nuclear involvement during the transcription and replication of influenza virus7"10. These include nuclear labelling in autoradiographs, inhibition of viral production by actinomycin D and a-amanitin-both inhibitors of nuclear RNA polymerase II-and the splicing and ...
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  • 157
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 223-225 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Because all previous experiments demonstrating asymmetrical control of attack and copulation have used only male chickens hatched from eggs exposed to light during incubation4'5, it was first necessary to ascertain that the same phenomenon occurred in females also hatched from eggs exposed to ...
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  • 158
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 225-227 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Peptides were extracted from ovine corpora lutea using the method developed by Walsh and Niall12 for the isolation of porcine relaxin. The crude extract was applied to a Sephadex G-50 column. While testing the fractions from this column for relaxin-like activity in a rat uterine strip bioassay, it ...
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  • 159
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 227-229 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The olfactory bulb has two major cell types: mitral cells, which relay signals to the cortex and granule cells, which are inhibitory interneurones. The interaction between these two types of cells involves a reciprocal dendrodendritic inhibitory pathway12'18. Briefly, impulses in mitral cell ...
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  • 160
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 229-231 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Rat peritoneal mast cells were collected, purified (90% purity) and incubated as described previously10. Mast cells that had been preincubated with 3H-serotonin to load them with this releasable amine11 and then incubated with amitriptyline (10 7-10"4M) for 5 min showed depressed histamine ...
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  • 161
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 231-233 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] C57BL/6 mice were immunized with 2 mg NP-0-Su; 6 days later T cells were prepared from the regional lymph nodes as previously described for the enrichment of Ts3 suppressor cells3. The hybridization procedure has been reported elsewhere3, in fact the same series of hybridoma cells were used to ...
    Materialart: Digitale Medien
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  • 162
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 233-234 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] L. monocytogenes, serotype 4b, was cultured in tryptose broth at 37 C for 16h. The virulence of the strain was maintained by continuous passage in mice of the same strain as used for the experiments. Viable counts of bacteria in broth, dilutions and spleen homogenates were determined using 10-fold ...
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  • 163
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 192-192 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR - What's this nonsense about Holmes' Principles of Physical Geology being "long out of print"? ("What Makes a Good Textbook"; Nature 11 February, p.459.) This work has never been out of print. A comprehensively revised third edition was prepared by Sir Arthur's widow Doris (herself a fine ...
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  • 164
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 199-199 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIDEREUS NUNCIUS waspublishedin Venicein 1610andrevealedtothe renaissance world "great, unusual, and remarkable spectacles. .... .as observed by Galileo Galilei, Gentleman of Florence, Professor of Mathematics in the University of Padua, with the aid of a spyglass". The title page also announced ...
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  • 165
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 203-204 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE article in this issue of Nature by Elderfield and Greaves (p.214) reflects two important trends in the study of the marine chemistry of the trace metals. First, there is increasing interest in the detailed chemical behavior of trace elements in the oceans - the complexing of metals with anions ...
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  • 166
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 214-219 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The depth distributions of La, Ce, Nd, Sm, Eu, Gd, Dy, Er and Yb in the oceanic water column are used to evaluate the marine geochemical cycle of the rare earth elements and their application as water-mass ...
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  • 167
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 235-238 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The destructive earthquake of 24 October 1980 in the Mixtec Highlands (ML = 7.4, h = 70 km) generated over 50 aftershocks which were large enough to be recorded and located on the RESMAC telemetric network. On each record a prominent arrival is found between 10 and 20 s after the initial P signal ...
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  • 168
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 242-245 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Our pco2 data were taken continuously by sampling an air stream with an intake located near the T. G. Thompson's bow and a water stream taken from a depth of 3 m. The water stream was passed through an equilibrator3, and both the air and equilibrator gases were dried before analysis with a Beckman ...
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  • 169
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 252-253 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The in vitro effects of insulin-like growth factors have been extensively studied. Both IGF I and IGF II are potent stimulators of cell replication, and of DNA and RNA synthesis in fibroblasts7, chondrocytes3 and calvarian cells (ref. 8 and C. Schmid and E.R.F., in preparation). Moreover, they ...
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  • 170
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 248-249 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THIS curious volume was cobbled together from some of the papers given at the first S.B. Gusberg Seminar on Reproductive Immunology, in June 1980 in New York, and from contributions solicited after the event which give it a strange chiaroscuro feel. The editor seems to have aimed at obstetricians ...
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  • 171
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 249-249 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN 1982 the serious student of immunology need no longer doubt the existence of lymphokines: he has only to consult the literature. As non-antibody protein products of lymphocyte activation, lymphokines act as mediators and regu-lators of many aspects of lymphocyte function. After a slow start in ...
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  • 172
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 250-250 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE US spacecraft Seasat, launched in June 1978, carried among its instrument complement a synthetic aperture imaging radar, SAR, operating at a radar wave-length of approximately 21 cm. During the satellite's short, three-month life, this instrument provided about 1.5 million km of imagery, mapped ...
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  • 173
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 251-251 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] FOR more than three thousand million years, melting in the outermost parts of the Earth has been an unusual event taking place only when and where temperatures rose to abnormally high levels. Igneous rocks formed by the consolidation of silicate melts therefore appear in the geological record as ...
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  • 174
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 133-135 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] To retrieve ozone density from the raw flight data, a profile was produced of attenuation as a function of height for each sensor. The signals near apogee showed no drift in detector sensitivity, but rounds 2 and 3 showed some dependence on rocket attitude (coning modulation). The observations near ...
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  • 175
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 141-143 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Within ophiolitic complexes, several types of dykelet (usually 1-5 cm wide, exceptionally up to 50 cm) can be observed in both the tectonite and the cumulate sequences. They are called dykelets to distinguish them from the isolated diabase dykes1, which are 2 m wide and cut throughout the ...
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  • 176
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 150-152 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] In 20 Sprague-Dawley rats weighing -300g the end of a 15-mm segment of an autologous sciatic nerve was inserted close to the basal ganglia or to the cerebral cortex (Fig. I A). The animals had previously been anaesthetized with sodium pento-barbital administered intraperitoneally (5 mg per lOOg ...
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  • 177
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 92-92 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The University of London seems well on the way to making an even greater hash of its affairs than seemed likely a few months ago (see Nature 14 January, p.86). For the past year, it has been clear that the consequences of the British government's reduction of support for universities, the limits ...
    Materialart: Digitale Medien
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  • 178
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 93-93 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Poland's new Higher Education Act, the subject of eighteen months' negotatiations and confrontations - including the threat, last September, of a nationwide university strike - became law last week. The act makes several formal concessions to academics' aspirations for self-governance, but at the ...
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  • 179
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    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 93-93 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] A proposal by a Joint Planning Committee that the teaching of science in the University of London should be concentrated on five sites was accepted by the senate of the university at its meeting on 29 April. No timetable for the concentration of the university is provided. This is the university's ...
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  • 180
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 94-94 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The Universite de Paris-Sud at Orsay, one of the principal centres of physics in France, has withdrawn from a plan to assist in the installation and development of the "largest" commercial computer in the world, a Cray-1. The computer is to be installed on the new site of the Ecole Polytechnique ...
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  • 181
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 94-95 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] In advance of the inconclusive end to the UN conference on the law of the sea, the Soviet Union last month passed enabling legislation to cover the granting of prospecting and exploitation licences to Soviet enterprises wishing to engage in undersea mining beyond the continental shelf. The decree ...
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  • 182
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Slow nucleation conditions are obtained by choosing a concentration of water in an electrolyte solution such that the homogeneous nucleation temperature, which may be obtained in separate experiments using emulsions2'3, lies very close to the glass transition temperature. In these conditions the ...
    Materialart: Digitale Medien
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  • 183
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 148-150 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] In the first experiment, female mice (BALB/c), which had been housed alone for part of the experiment, were taken from their home cage and placed with BALB/c stud males for 20 min to allow mating. They were then removed to cages containing FI male bedding while the stud male was returned to the ...
    Materialart: Digitale Medien
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  • 184
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 96-96 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The first newsletter of the newly established nucleotide sequence data library of the European Molecular Biology Laboratory (see Nature 15 April, p.596) lists 565 entries and is claimed to be fairly complete up until 1980 and perhaps half complete for 1981. Four journals, Cell, Nucleic Acids ...
    Materialart: Digitale Medien
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  • 185
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 96-96 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Waalre, The Netherlands The Dutch are again turning to wind as a source of energy. At the end of the last century, more than 9,000 windmills were pumping water or grinding flour in the Netherlands, and if the present emphasis on wind energy continues, by the year 2000 there will be more than 2,000 ...
    Materialart: Digitale Medien
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  • 186
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 162-164 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Although our model may be seen as a generalization of the Fitzhugh equations2, it can be developed from first principles if it is assumed that the rate of change of membrane potential depends linearly on z (the current passed through the electrode), and y (an intrinsic current), and depends ...
    Materialart: Digitale Medien
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  • 187
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 175-175 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] RECENTLY Sen et al have observed1 regular arrays of inverted micelles in galactolipids and correctly depicted their molecular organization. However, the authors did not differentiate the observed inverted micelles from lipidic particles as seen in phosphatidylethanolamine and cardiolipin2"5. The ...
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 188
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 176-176 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] EDLUND and Normark1 have presented sequence and distribution data of tandem duplications of the ampC gene of Escherichia coli K-12, which suggest that unequal recombination between homologous sequences of the order of 12 base pairs (bp) in length may be a general mechanism for the generation of ...
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 189
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 98-98 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] A. J. SOUTHWARD REPLIES Mea culpe: Professor Eisner is quite entitled to his little bit of fun. The word should have been million 6 million tons of oil per annum into the sea. I agree that the word billion needs ...
    Materialart: Digitale Medien
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  • 190
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 181-182 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] HANNES Alfven's Cosmic Plasma is a highly individualistic essay about many topics central to contemporary space physics, astrophysics and cosmology. It deals with laboratory studies of cosmic plasma processes; the Earth's magnetosphere, ionosphere and aurora; Venus's magnetosphere; the solar wind ...
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 191
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 98-98 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR Scientifically I am certainly no supporter of the main thesis of Stephen Jay Gould concerning punctuated equilibrium. Thus I might be expected to be in favour of (or at least to watch passively) virtually anything that helps to reduce Gould's immense influence and effectiveness, especially if ...
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  • 192
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 4-4 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] As shown in the figure, published in "The Health Consequences of Smoking: Cancer 1982" (US Department of Health and Human Services), during the period 1950 to 1978, the overall cancer death rate increased. This trend results from a remarkable increase in lung cancer death rates. However, if lung ...
    Materialart: Digitale Medien
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  • 193
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 4-5 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Washington The latest move in the lengthy battle over access to scientific data on the medical effects of pesticides came last month with the US Environmental Protection Agency (EPA) asking Congress for authority to write its own rules for the release of such information. Members of the House of ...
    Materialart: Digitale Medien
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  • 194
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 6-6 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Washington Renewed public controversy has arisen about the connections of various faculty scientists at the University of California's Davis campus with a local research company Calgene, particularly over the effect these could have on graduate students. Last October, plant biologist Dr Ray ...
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 195
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 6-6 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] One of the casualties of martial law in Poland has been the free flow of information between Polish scientists and their Western colleagues. With the total severance of telecommunications, and the postal service considerably delayed by censorship, it has been difficult, if not impossible, for ...
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 196
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 10-11 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] INFECTIONS with parasites are characteristically long and chronic and the resulting diseases involve diverse pathological mechanisms. The damage caused is vastly in excess of the expected local reactions to the parasites themselves and appears out of all proportion to their size. A recent ...
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 197
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 106-107 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] MANY recent papers suggest that cyclic GMP plays a major role in visual transduction, relaying the light stimulus from the visual pigment, rhodopsin, to the sodium channels of the retinal rod. Until a few years ago it was thought that this role was exclusively played by calcium ions, but the new ...
    Materialart: Digitale Medien
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  • 198
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 18-18 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE Venus cloud and haze system summarized in Table 1 is planetary in nature with an enormous vertical extent of 50-60 km. The clouds are rather tenuous and were found to have an average visibility of about 1 km by early Venera nephelometer (particle backscatter photometer) measurements1. The main ...
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  • 199
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 296 (1982), S. 19-19 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] A general view of the ionospheric structure of Venus and of the major processes operating there are shown in the figure. Solar extreme ultraviolet (EUV) radiation falling on the thermosphere creates the daytime ionosphere, which is in photochemical equilibrium near its peak at about 142 km, where ...
    Materialart: Digitale Medien
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  • 200
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    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 109-115 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Information available on mechanisms of corrosion of steel in concrete is reviewed and the need emphasized for a better understanding of the electrochemistry of the subject and aspects of the physical performance of the concerete cover in relation to the diffusion of both chloride and oxygen. The ...
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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