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  • Nature Publishing Group  (3,471)
  • 1980-1984  (3,471)
  • 1925-1929
  • 1981  (3,471)
  • 101
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    How cells live together (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 108-109 
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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 cells of a higher organism normally behave in a completely social way; it is the occasional deviant such as a cancer cell that attracts our attention. But how is cooperation between cells in a multicellular organism established? The problem is clearly seen in the cellular slime moulds, such ...
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  • 102
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    Hemispheric modes of consciousness in the human brain (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 112-113 
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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] One half of the Nobel Prize in Physiology or Medicine was awarded to Roger W. Sperry, California Institute of Technology, for his discoveries concerning the functional specialization of the cerebral hemispheres. ROGER SPERRY, a leader among students of the functional design of the brain for forty ...
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  • 103
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    Increase in faecal nitrosamines in Japanese individuals given a Western diet (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 453-456 
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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 studied six healthy Japanese male volunteers from our laboratory (aged 27-39 yr) who were not receiving medical treatment during this study. Three of the subjects were given, in order: (1) a typical Japanese diet for 4 days; (2) a mixed Japanese diet for 3 days; (3) a balanced Western-style diet ...
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  • 104
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    Identification of antigenic determinants unique to the surfaces of cells transformed by Epstein–Barr virus (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 458-460 
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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] Spleen cells from C57BL/6 or BALB/c mice immunized by repeated intraperitoneal injections of 107 cells of one clone of EBV-transformed human cells were used to generate hybri-domas following the method of Kohler and Milstein3. A two-step screening was performed to select those hybridomas whose ...
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  • 105
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    Specificity of T-cell clones illustrates altered self hypothesis (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 460-462 
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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 one set of experiments we have isolated a number of cloned, diploid, H-2k/H-2d CTL lines which were originally selected in vitro to recognize H-2k-plusminor antigen 1 but which also recognize H-2d-plus-minor antigen 2. Radiation chimaeras (Fi- parent) were constructed by reconstituting lethally ...
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  • 106
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    Distinct subpopulations of enteric p-type neurones contain substance P and vasoactive intestinal polypeptide (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 470-471 
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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 colloidal gold-labelled second layer antibody was used in a two-step immunocytochemical technique based on the original method of Romano and his colleagues7. Purified goat IgG was labelled with colloidal gold particles measuring 20 nm in diameter8 (see also Fig. 2 legend), in a technique modified ...
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  • 107
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    A specific substance P antagonist blocks smooth muscle contractions induced by non-cholinergic, non-adrenergic nerve stimulation (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 467-469 
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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] Guinea pig taenia coli preparations, consisting of longitudinal smooth muscle with the attached myenteric plexus13, were placed in Krebs solution, stored at 4 C for 1 h and then mounted vertically on a Perspex holder in a 7-ml organ bath thermostated at 37 C. One end was attached to a rigid ...
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  • 108
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    Phaseolin mRNA is translated to yield glycosylated polypeptides in Xenopus oocytes (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 175-176 
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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] Translation of bean cotyledon mRNA in cell-free extracts from wheat germ4 yielded polypeptide products that were immunoprecipitated by phaseolin-specific antibodies and which gave peptide maps, using the Cleveland procedure5, similar to those of authentic protein6. However, SDS-polyacrylamide gel ...
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  • 109
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    Multiple tubulin forms are expressed by a single neurone (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 477-480 
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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] Fig. 1 An isolated neurone grown in a well of a Terasaki plate, viewed by phase-contrast microscopy. Scale bar, 40 u.m. Neurones from the superior cervical ganglia of newborn rats were grown as described previously27. Briefly, the ganglia were mechanically dissociated and the cells plated on to ...
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  • 110
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    E. coli ribosomal protein L10 inhibits translation of L10 and L7/L12 mRNAs by acting at a single site (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 190-192 
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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 examined the feedback regulatory properties of L10 in vitro using a DNA-directed protein synthesizing system with various DNA templates containing all or portions of the /3 operon (Fig. 1). When a template containing the entire /3 operon (An/1118) was used, addition of purified L10 to in vitro ...
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    URL: http://dx.doi.org/10.1038/294190a0
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  • 111
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    Crucial colonization (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 194-195 
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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 earliest known tetrapods are the ichthyostegid amphibians, now known from Late Devonian rocks in both Greenland and Australia. From this beginning sprang a variety of larger "labyrinthodont" amphibians, apparently ancestral to the reptiles, as well as the smaller "lepospondyl" amphibians. The ...
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  • 112
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    What Mr Blix should do (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 1-1 
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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 International Atomic Energy Agency in Vienna has plainly been scarred by the events of the past year, the Israeli raids on the Iraqi reactor at Tamuz among them. But for most of the year the agency has also been haunted by the unaccustomed difficulty of deciding who should be its new director ...
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  • 113
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    High-energy physics: LEP approved (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 4-4 
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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 American physicists agonize over the future of a new accelerator (see above), twelve European nations last week agreed in principle to the construction of LEP, a 27-km circumference machine to collide electrons with positrons at energies up to 50 GeV per beam enough to create the long-sought ...
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  • 114
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    Integration of foreign genes into the mammalian germ line: genetic engineering enters a new era (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 9-10 
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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 appfication of recombinant DNA technology to mammalian cells is gradually yielding a rich harvest of cloned chromosomal fragments containing specific genes and their flanking sequences. Some of these cloned DNAs have been reintroduced into tissue culture cells where in many cases they are ...
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  • 115
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    A particularly anomalous Seyfert galaxy (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 13-13 
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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] SEYFERT GALAXIES and their quasar cousins have provided* much observa-tional mash for the vats of theoretical speculation over the years since their discovery. A recent article by T. Heckman and B. Balick1 has thrown an especially juicy bucketful into this already potent brew. Ordinarily, what ...
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  • 116
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    Extraterrestrials : where are they? (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 10-11 
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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 MIDST of a sometimes depressing reality, many people take conscious or subconscious comfort in the assumption that we are but one of a myriad of advanced technical civilizations co-existing in our Milky Way galaxy. This view ? championed by articulate scientific and lay spokesmen ? is ...
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  • 117
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    Relativity for all (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 23-24 
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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] Discovering Relativity for Yourself. By Sam Lilley. Pp.425. ISBN hbk 0-521-23038-1; ISBN pbk 0-521-29780-X. (Cambridge University Press: 1981.) Hbk £17.50, $49.50; pbk £7.95, $19.95. ONE approach to physical science for the intelligent but innumerate layman is through ...
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  • 118
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    Philosophy in an uncertain world (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 27-28 
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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] Divine and Contingent Order. By Thomas F. Torrance. Pp.162. ISBN 0-19-826658-8. (Oxford University Press: 1981.) £9.50, $27.59. PROFESSOR Tom Torrance is a distin-guished theologian, the chief apostle in this country of Karl Barth, whom many would regard as the most significant figure ...
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  • 119
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    Britain in leaf (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 495-496 
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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 SINGLE volume on trees cannot, unlike one on birds, extend its coverage to the Mediterranean shores without losing much of its use in British gardens. The Hamlyn Guide to Trees of Britain and Europe by C. Humphries, J.R. Press and D.A. Sutton (Hamlyn; hbk ?5.95, pbk ?3.95) is a good example. Of ...
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  • 120
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    Hectares for whom? (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 40-40 
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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] Farming and Wildlife. By Kenneth Mellanby. Pp.178. ISBN 0-00-219239-X. (Collins: 1981.) £9.50. Countryside Conservation: The Protection and Management of Amenity Ecosystems. By Bryn Green. Pp.249. ISBN hbk 0-04-719001-9; ISBN pbk 0-04-719002-7. (George Allen & Unwin: 1981.) Hbk £13, ...
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  • 121
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    The dissent of woman (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 500-501 
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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] On Becoming Human. By Nancy M. Tanner. Pp.373. ISBN hbk 0-521-23554-5; ISBN pbk 0-521-28028-1. (Cambridge University Press: 1981.) Hbk £20, $29.95; pbk £6.95, $10.95. CHIMPANZEES are more like human beings than they appear. Linnaeus the type specimen of taxonomists ...
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  • 122
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    Fighting for the conservation of tigers (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 42-42 
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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] Saving the Tiger. By Guy Mountfort. Pp.123. ISBN US 0-670-61999-X; ISBN UK 0-7181-1991-6. (Viking/Michael Joseph: 1981.) $16.95, £7.95. THE tiger is a slim, dramatic animal, and it now has a book to match it. The numerous, large and well-printed colour plates are spectacular and ...
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  • 123
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    Non-tandem arrangement and divergent transcription of chicken histone genes (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 49-53 
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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 have located chicken histone genes within 14-kilobase pair inserts of two genomal clones, λCH-01 and λCH-02. The genes were mapped with chicken histone cDNA and gene-specific probes, and the identity and polarity of each gene confirmed by DNA sequencing. As previously indicated, ...
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  • 124
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    Morphology of iodine-doped polyacetylene (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), 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] Acetylene was polymerized, using Shirakawa's technique1, on the surfaces of a glass reactor. The essential experimental conditions are: solvent, toluene; Al/Ti ratio of 4; catalyst concentration, 0.3 Ti molT1; ageing of catalyst, 1 h; temperature, -78 °C; acetylene pressure, 1 atm. The 100-um; ...
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  • 125
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    Hydrazines and carbohydrazides produced from oxidized carbon in Earth's primitive environment (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), 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] Our experiments were designed (1) to supply aqueous inorganic carbon in the form of calcium carbonate to effect pH control near pH 7.5-8.0 as well as to provide dissolved CO2 and dissolved COl anion in constant small amounts determined by the low solubility product of CaCO3, and (2) to supply Fe to ...
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  • 126
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    Califonia medflies: Innocent victims (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 301-301 
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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] Palo Alto,California If aerial spraying with the insecticide malathion is used to counter the threat of Mediterranean fruit fly in California this winter, an unexpected casualty might be one of the oldest continuously studied insect populations in the world. Jasper Ridge is a 1,200-acre natural ...
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    Successful biological control of the floating weed salvinia (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 78-80 
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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] Salvinia was first recorded in Australia in 1952 and by 1976 it was present in many tropical and subtropical rivers and lakes and was more widespread than water hyacinth, which entered the country in the late 1800s8. Salvinia has achieved unacceptable population densities in Australia and elsewhere ...
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    Enkephalin as a transmitter for presynaptic inhibition in sympathetic ganglia (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 80-82 
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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] Experiments were carried out on the inferior mesenteric ganglia isolated from adult guinea pigs. The ganglion was placed in a bath and perfused with modified Tyrode solution at 36 C. Intracellular recordings were made from ganglion cells as described previously5'8. Test stimuli were given to a ...
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    Isoleucine-requiring Nicotiana plant deficient in threonine deaminase (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 87-88 
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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] Haploid protoplasts were prepared from leaves of N. plumbaginifolia plants, mutagenized by irradiation and grown to small colonies in complete medium. Calli derived from non-irradiated protoplasts were not studied. Two out of 11, 049 colonies tested after mutagenesis were unable to grow on minimal ...
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    Mouse IgG3 antibodies are highly protective against infection with Streptococcus pneumoniae (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 88-90 
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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] Previously we have demonstrated that hybridoma IgM anti-PC antibody can protect mice from infection with type 3 Streptococcus pneumoniae1 strain WU2. Other data (rf. 8 and J. B. Robbins, personal communication) indicate that hybridoma anti-PC antibody can also protect against pneumococcal types 1, ...
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    Transcriptional regulation of the prolactin gene by ergocryptine and cyclic AMP (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 94-97 
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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 first examined the effect of ergocryptine on the levels of nuclear precursors of prolactin mRNA. Previous work has demonstrated the presence of large, potential precursors of prolactin mRNA in pituitary cell nuclei12, the largest of these being 7.0 kilobases (kb); the mature prolactin mRNA is ...
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    Monkey business hits university laboratory (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 691-691 
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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] One of Britain's largest and best laboratory breeding colonies of rhesus monkeys is finally to be disbanded despite the fact that it has not been possible to import the animals from their usual source for the past three years. About half the monkeys are likely to find homes elsewhere but the other ...
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    Oil pollution: British problems (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 692-693 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The British government machinery for coping with major oil spills is inadequate, according to the Royal Commission on Environmental Pollution, whose latest report on oil pollution of the sea was published last week. The problem is that too many government departments, local and other interested ...
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    Scientists against nuclear weapons : a list (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 694-694 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Readers - particularly those who do not realize that 24-31 October is United Nations Nuclear Disarmament Week - may be interested to know of the following organizations which have been set up by and for scientists who are opposed to nuclear armaments. The self-expressed objectives of the ...
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    Calcium and the control of synaptic strength by learning (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 697-700 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN a remarkable convergence of ideas, Ramon y Cajal, the great Spanish anatomist, and Sigmund Freud, the founder of psychoanalysis, independently postulated in 1894 that learning might produce prolonged changes in the effectiveness of the synaptic connections between neurones and that these changes ...
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    Press Council adjudicates (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 695-695 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Following a complaint by Dr P. F. Browne of the University of Manchester Institute of Science and Technology that Nature breached its announced policy by failing to return an unpublished manuscript, the Press Council has issued the following adjudication: Nature assures potential contributors that ...
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    Naming names (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 696-696 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Upon my return from vacation, I was taken aback to discover that I was referred to in your editorial of 3 September (p.2) as one of the creators or co-authors of the works of Isadore (Isidore) Nabi. This is completely untrue. I am shocked that you make this allegation without checking with ...
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    Organic synthesis in the atmosphere of Titan (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 725-727 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Speculation on the processes which could contribute to the organic chemistry of Titan depend on the selection of the atmospheric model. The ground-based observation of C2H6, C2H4 and C2H2, along with the coloration of the planet, led to several competing models for the atmosphere. At one-extreme, ...
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    New row erupts about lab. animals (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 597-597 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Washington Public pressure for tighter laws on the use of laboratory animals has been increased by the indictment of the head of a private laboratory on the criminal charge of causing pain and suffering to monkeys. The case against Dr Edward Taub, chief investigator at the Institute of Behavioral ...
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    French science budget: More for all (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 598-599 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Is a budget increase of - on the face of it - nearly a third for research and development, 1,800 new posts in universities and a further 630 in research agencies a vision of some glorious year of the 21st century? No, it will be France in 1982, if budget plans announced last week are put into ...
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    Aid without reactors (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 600-600 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The United Kingdom Atomic Energy Authority confirmed last week that its Harwell laboratory is acting as a consultant to the King Abdulaziz University in Jeddah, Saudi Arabia, on the development of an international energy research centre. But the authority insists that no part of its brief will be ...
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    Fast breeder reactors: can we learn from experience? (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 205-208 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] INITIALLY, developing the fast breeder reactor (FBR) carried the promise of a virtually inexhaustible source of electricity at competitive cost. Now, three decades and substantial amounts of public expenditure later, we are not much closer to the fulfillment of that promise. Economic evaluations ...
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    Morphological stasis and developmental constraint: real problems for neo-Darwinism (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 214-215 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A recent News and Views article1 commented on a paper of mine2 which summarized a morphometric analysis of mollusc lineages from a Cenozoic sequence in North Kenya. I had made three key points: (1) all lineages exhibit morphological stasis for very long periods of time (3-5 Myr), (2) evolutionary ...
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    Life on an oily wave (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 215-216 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] AFTER three years of deliberation, the Royal Commission on Environmental Pollution has decided that chronic and accidental spills of petroleum do not pose a permanent threat to marine life comparable with the dangers inherent in heavy metals and radioactivity (Nature 293, 692; 1981). This view, ...
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    Milliarcsecond structure of BL Lac during outburst (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 236-238 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The observations were made at three epochs: 1980.41 (γ 6 cm), 1980.73 (γ 6 cm) and 1980.93 (γ 2.8 cm). During each epoch, one telescope had a technical failure so that only four telescopes were used in each mapping analysis. The telescopes used the MKII VLBI recording scheme5 and ...
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    Field-capacity water extracts from serpentine soils (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 245-246 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The soil solutions were extracted by centrifuging at 12,000g soil samples which had been maintained for up to 3 days at field capacity (moisture content after 24 h drainage). The solutions were analysed by standard atomic absorption techniques8 for metals, the phenol disulphonic method8 (with ...
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    Evidence for delayed mortality in hurricane-damaged Jamaican staghorn corals (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 251-252 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Hurricane Alien passed within 65 km of the reefs of Discovery Bay on 6 August 1980 (refs 7, 16). This storm, the strongest recorded for the Caribbean, generated massive waves (〉6-12 m) but little rain7. The large mounds of the delicately branching A. cervicornis, which had dominated the West ...
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    Carbon-13 isotopic fractionation as a measure of aquatic metabolism (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 252-253 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In our first experiment, we placed specimens of the common Indo-Pacific reef-building coral, Pocillopora damicornis, in a 90-litre aquarium and alternately placed the aquarium in sunlight and darkness during a 6-h period. The aquarium was covered with a sheet of clear plastic (Mylar) to impede gas ...
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    Receptor binding of somatostatin-28 is tissue specific (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 259-260 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Membrane fractions enriched in somatostatin receptors were prepared from fresh cerebrocortical, hypothalamic and pituitary tissue obtained from adult male Sprague-Dawley rats using techniques reported previously15'18. Tyrn-SRIF was radioiodinated to high specific activity2 and used as the ...
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    Plutonium deal (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 601-601 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The United States is seeking plutonium from Britain to meet the shortages caused by the expanding US nuclear weapons programme. The US Department of Energy has approached its opposite number in Britain through the British Foreign Office with a request for plutonium reprocessed from spent reactor ...
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    Survivalist hopes (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 602-602 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Barrie Pearson (Nature 3 September, p.6) objects to Antony Flew's (Nature 16 July, p. 192) "formulation of the principle of natural selection as non-random survival" on the grounds that it is an "empirically empty concept if the range of possibilities the non-random survivors were chosen from ...
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    A family of T-cell alloantigens linked to Igh-1 (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 742-745 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We previously described the production of an alloantiserum which may recognize the constant region of a T-cell receptor for antigen1'5. Antibody directed against the Igh-1-linked alloantigen blocks the binding of Ts2 cells from hyperimmune suppressed mice6 to the Ars IdX7 and acts as a polyclonal ...
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    Complex allotypes of rat κ chains are encoded by structural alleles (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 669-671 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The existence of multiple copies of the rat CK gene has been proposed because (1) a 10% difference in the amino acid sequence is unexpected, as the products of allelic genes usually differ by one or a very few amino acids9; (2) serological studies of inbred strains and wild rat populations of ...
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    Liposome-mediated transformation of streptomycetes by chromosomal DNA (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 671-673 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] When phospholipids are dispersed in an aqueous solution, vesicles known as liposomes form, encapsulating discrete volumes of the aqueous phase inside a bilayered lipid membrane. The addition of a solution of DNA to a film of dried phospholipid results in the formation of liposomes containing DNA ...
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    Effect of constraints, solvent and crystal environment on protein dynamics (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 677-678 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The protein used, bovine pancreatic trysin inhibitor (PTI), consists of 454 heavy atoms. (In the calculations, the hydrogen atoms were incorporated in the heavy atoms to which they are bound.) There are also four internally hydrogen-bonded water molecules. The empirical potential function (see refs ...
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    High temperature of forest fires under pines as a selective advantage over oaks (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 643-644 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Experimental fires were conducted in a Florida sandhill9 where fire history had been recorded for six years. The area is dominated by longleaf pine (Pinus palustris), turkey oak (Quer-cus laevis} and sand live oak (Quercus geminata). The frequent surface fires are fuelled by dead grass (Aristida ...
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    Direct inhibition of testicular androgen biosynthesis revealing antigonadal activity of neurohypophysial hormones (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 650-652 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The effects of nine naturally occurring neurohypophysial hormones on the human chorionic gonadotropin (HCG)-stimulated secretion of testosterone into the medium was investigated in vitro. Treatment with HCG (lOngmP1) led to a 68-fold increase in the secretion of testosterone compared with untreated ...
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    Science research council: Paying a price (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 102-102 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The capacity of the Science and Engineering Research Council to make research grants to British academics is likely to be impaired, in the year immediately ahead, because of the overspending by the council's Science Board, in the financial year that ended on 31 March. One of the ironies of this ...
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    Unravelling the energy issues (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 683-683 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT is not often that economists and natural scientists succeed in working together. Even in a field of inquiry such as energy, where issues and problems clearly extend across conventional subject boundaries, it is hard to achieve a meeting of minds. Hence genuinely collaborative work, as distinct ...
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    Tunnelling particles (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 683-684 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN this small, tightly-written volume, Professor Bell describes in detail almost every aspect of the tunnelling of protons, atoms and molecules. Tunnelling, a phenomenon which is impossible in Newton's world of classical mechanics, is associated with a particle's wave-like behaviour, first ...
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    Academic barriers at high altitude (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 686-686 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] EXTREME environments, such as the deep seas and very high altitudes, present peculiar ecological problems to the plants and animals which inhabit them. Few books have been written on the deep seas, whereas many have been written about the ecology, flora and fauna of the high mountains. But most of ...
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    Coding complications (1981)
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    Nature 294 (1981), S. 110-110 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] READERS will recollect that the celebrated wobble hypothesis of Crick defines the nature of the interaction between the codons of messenger RNA and the corresponding anticodons of tRNA. In short, the codons are read one at a time by tRNA molecules. These form three base pairs between the bases in ...
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    Yellow rain: Waiting for data (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 598-598 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A group of representatives of the United States government has been visiting ten European capitals during the past three weeks, presenting the evidence behind allegations by Mr Alexander Haigh, the US Secretary of State, that Russian-produced mycotoxins have been dropped on civilians in Kampuchea ...
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    Rules for chemical reactions (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 114-114 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] One half of the Nobel Prize in Chemistry was awarded to Kenichi Fukui, Kyoto University and the other half to Roald Hoffmann, Cornell University, for their theories concerning the course of chemical reactions. THEORETICAL CHEMISTS often seem to work at one of two extreme ends of the same problem. ...
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    Structure of the pro α 2(I) collagen gene (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 129-135 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fifty-four kilobase pairs (kbp) of cloned chicken DNA containing the entire 38-kbp pro α2(I) collagen gene have been isolated and characterized. DNA sequence analysis of a select 4 kbp of the gene has precisely described 14 exons which comprise one-third of the sequences encoding the ...
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    Solid-state reduction of iron in olivine—planetary and meteoritic evolution (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 142-144 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Single crystals of San Carlos olivine, Fo92, were heated under controlled oxygen fugacity, /02, to temperatures in the range 950-1,500 C and the conductivity of the samples measured . These results indicated that the time-dependent variation in electrical conductivity was associated with a change ...
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    Structural features in ethanol–water mixtures revealed by picosecond fluorescence anisotropy (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 145-146 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Most information previously obtained from fluorescence depolarization data has been concerned with solvent-solute interactions rather than with the solvent itself5'6. Figure 1 shows a plot of the rotational relaxation time of the dye cresyl violet (3,7-diamino-l,2-benzphenoxazine chloride) against ...
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    Shallowing-upward cycles in the Middle Proterozoic Altyn Formation (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 157-158 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Altyn Formation is exposed in the eastern part of Glacier National Park, Montana. The age of the formation may be estimated from geochronological data available for equivalent stratigraphic units. The Aldridge Formation of British Columbia has granodiorite intrusives which are at least 1,335 ...
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    Building a nervous system (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 510-511 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] RECENT studies of the development of the grasshopper nervous system are beginning to suggest some of the strategies that might be used to generate complex neural networks from simple basic structures. The studies have been made possible by the special advantages offered by grasshopper embryos. They ...
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    Inside a volcano: the first three-dimensional map (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 512-512 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] KILAUEA VOLCANO, HAWAII, has long been regarded as about the most thoroughly documented and best understood active volcano on Earth. Since 1952, increasingly sophisticated instruments have been used at the Hawaiian Volcanological Observatory to record the ground deformation caused by swelling of ...
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    Addendum (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 514-514 
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    Notes: [Auszug] The meeting report "Extragalactic jets: facts and fancies" (Nature293,336-337; 1981) was co-authored by Peter Scheuer and Mitchell Begelman. We apologize to Dr Begelman for omitting his ...
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    Late Palaeozoic palaeomagnetic data for Wrangellia: resolution of the polarity ambiguity (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 561-563 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A major portion of the North American Cordillera is composed of 'suspect' terranes1'2. These tectonostratigraphic terranes are suspected of being allochthonous to cratonic North America. Palaeomagnetic studies have shown that many of these terranes have travelled great distances3; however, the ...
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    Conserved amino acid sequence of a neuropeptide, the head activator, from coelenterates to humans (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 579-580 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Head activator, as assayed by its biological effect on hydra, was found in brain and intestine of cow, pig, rat and human5'6. The hypothalamus of an adult rat contained 105 hydra equivalents, the intestine 10 times more. Cow and pig contained comparable amounts per animal. The best source was ...
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    Analysis of the terminus region of the Bacillus subtilis chromosome (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 673-675 
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    Notes: [Auszug] Terminus labelling of the chromosome of the thymine -requiring dnal strain was performed essentially as described previously10. However, to obtain sufficient amounts of radioactive DNA for analysis, the culture (6xl08 cells per ml in starvation medium containing 5 jutg ml"1 thymine) was filtered 60 ...
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    Wild-type tRNA Tyr G reads the TMV RNA stop codon, but Q base-modified tRNA Tyr Q does not (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 188-190 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] As an assay system for readthrough, we have used simultaneous injection of TMV RNA and amber or ochre suppressor tRN As from yeast into Xenopus oocytes; this results in synthesis of the 110K and 160K proteins2. In the process of screening RPC-5 fractionated Drosophila melanogaster tRN As (21 ...
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    Off with their heads! (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 415-416 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] President Reagan did not, as is now widely supposed, abolish the Departments of Energy and of Education in his television broadcast two weeks ago. Instead, he said that he proposed that they should be abolished. What will now happen is that the White House will prepare plans for deciding how the ...
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    What transmitters do (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 521-522 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THERE are known to be several ways of skinning a cat and, similarly, there are several ways of inhibiting a neurone from firing. So much, for example, is now well demonstrated for the neurotransmitter called y-aminobutyric acid (GABA for short), a simple amino acid closely related to glutamic acid ...
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    Towards understanding the acetylcholine receptor (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 523-524 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE acetylcholine receptor, the workhorse of classical physiology, is likely to be the first of the neuronal receptors to be subjected to the full treatment of molecular biology. The explanation is straightforward. Species of the electric eel Torpedo use arrays of the receptors as means of ...
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    Swedish universities: More means fewer (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 420-420 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Stockholm Swedish universities are to press the government for an increase in the allocation of students by 10-15 per cent over the next two to three years, to cope with a population bulge among 16-18 year olds - but they believe they can handle the bulge with only a 1 per cent real increase in ...
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    Unsöld on Einstein (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 422-422 
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    Notes: [Auszug] SIR - We find the statements regarding Einstein made by Professor Unsold (see Nature 16 April, p.535) outrageous and would like to express our strong disagreement. This is particularly important to us now since, in a later letter to Nature (4 June, p.374), Professor Unsold implies that the physics ...
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    Improved techniques for brain anatomists (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 526-528 
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    Notes: [Auszug] THE peculiar difficulty of the anatomy of the nervous system is twofold - the complexity of the system, especially of the connections between one neurone and others, and the likelihood that apparently similar neurones, even when more or less adjacent, may have different functions. As in the revival ...
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    Vision machine (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 531-531 
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    Notes: [Auszug] IN an upper window at the Artificial Intelligence Laboratory at the Massachusetts Institute of Technology, a peculiar camera looks out on the main street connecting the two universities in the City of Cambridge. Representations of the camera's visual field are regenerated at intervals of about a ...
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    A few loose ends (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 531-532 
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    Notes: [Auszug] THE general impressions created by the neurosciences and their practitioners on the rest of the professional community is that it can be only a matter of time, a few months or at the most a few years, before big questions are finally decided, before the pot of gold is finally disinterred from ...
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    Problems of organization (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 533-533 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE neurosciences are proud to call themselves an interdisciplinary gathering of people. But neuroscientists themselves often overlook the extent over which their component disciplines are spread. The field has its roots in clinical medicine. Physiology entered the scene only relatively recently, ...
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    Who goes where from here? (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 534-534 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] This survey of the present state of neuro-sciences is necessarily a kind of snapshot, one taken from an idiosyncratic point of view. Others might well have paid more attention to other aspects of the functioning of typical nervous systems - the biochemistry of the brain, the psychological tests ...
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    Isozyme analysis indicates that a virulent cereal rust pathogen is a somatic hybrid (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 565-566 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Isolates of rye stem rust, wheat stem rust and their putative hybrids were collected in the same geographical region on Secale cereale, Triticum aestivum and A. scabrum (a mutual host for all three types) respectively. Putative hybrids were identified by their virulence characteristics on selected ...
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    Specific stimulation of in vitro maturation of mesencephalic dopaminergic neurones by striatal membranes (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 570-572 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] When dissociated mesencephalic cells from 13-day-old mouse embryos were cultured for 3 days in the presence of crude membranes from 2- or 3-week-old mouse striatum, 3H-DA uptake capacity of the DA neurones was strongly stimulated (Fig. 1). Two control experiments confirmed that this effect, which ...
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    In vivo release of glutamate and aspartate following optic nerve stimulation (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 572-574 
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    Notes: [Auszug] Glu and Asp have been proposed as transmitters in the pigeon optic nerve on the basis of the following evidence. Degeneration of the optic nerve results in a decreased content of Glu (50%) and Asp (40%) in the terminal layers of the optic nerve in the tectum6. The high-affinity uptake of Glu is ...
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    C2 synthesis by human monocytes is modulated by a nicotinic cholinergic receptor (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 580-583 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The control of C2 synthesis by mononuclear phagocytes has been poorly defined to date12. To investigate this issue, monolayers of peripheral blood monocytes were prepared and cultured in vitro by a previously published technique13. Monolayers consisted of 〉95% monocytes as judged by nonspecific ...
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    Demethylation of CpG sites in DNA of early rabbit trophoblast (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 589-590 
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    Notes: [Auszug] Almost all methylation in mammalian DNA occurs as methyl -cytosine (MeC) in the sequence 5'-CpG (ref. 10). As pointed out by Bird and Southern11, the bacterial endonucleases Hpall and Mspl are especially useful in probing CpG methylation. Both enzymes cut DNA at the sequence 5'-CCGG; Hpall will not ...
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    Unidentified features in the spectrum of Triton (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 59-60 
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    Notes: [Auszug] Observations were made with the circularly variable filter in the MMT IR photometer. The wavelength calibration and spectral resolution of 1% were determined by laboratory measurements of gaseous discharge lamps and were confirmed by measurements of pb by from the planetary nebula NGC7027. All ...
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    Temperature and precipitation record in southern Chile extended to ∼43,000 yr ago (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 65-67 
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    Notes: [Auszug] We derived temperature and precipitation data from the pollen contained in sediments in a lake basin at Taiquemo (4210'30" S, 7335'45" W)11. The site is located on northeastern Isl£ Chilo at an elevation of 170 m, 105 km south-west of Alerce where we reported quantification of southern Chile ...
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    Effects of dexamethasone and cortisone with X-ray irradiation on transformation of C3H 10T1/2 cells (1981)
    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 97-98 
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    Notes: [Auszug] We used a cell line4'5 derived from C3H mouse embryos (lOT, clone 8) adapted for studies of radiation transformation6'9. For the transformation assays, cells were exposed to either 0 or 400 rad of X rays, with or without 107M dexamethasone or cortisone (determined in separate experiments to be the ...
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    Conflicts of interest about development (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 689-690 
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    Notes: [Auszug] Politicians returned from last week's conference on development at Cancun in Mexico have been boasting that the occasion was less quarrelsome than had been feared. Certainly no delegation walked out. Recriminations (not entirely absent) may have been restrained by the complainants' wish that there ...
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    100 years ago (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 338-338 
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    Notes: [Auszug] THE FOG A remarkable phenomenon occurred in New England on September 6, almost exactly similar to one that occurred in the same region on May 19, 1780. The Springfield Daily Republican describes it as follows: In this city the day began with a slow gathering of fog from all the watercourses in the ...
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    Sun–comet collision: Extreme conditions (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 693-693 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The first ever recorded collision between a comet and the Sun was detected by a US Air Force satellite in mid-1979, the Department of Defense has revealed. The news has only just emerged because the satellite experiments had been given low priority, and the data tapes have only just been analysed. ...
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    Technical innovation: All change (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 695-695 
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    Notes: [Auszug] Britain's newest think-tank, the Technical Change Centre, appears to be limbering up for thought. Sir Bruce Williams, director of the centre, announced recently the appointment of two assistant directors at the establishment, Professor Ronald Dore of the University of Sussex and Dr Alun Jones, ...
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    Bradford University (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 696-696 
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    Notes: [Auszug] SIR - I write to draw attention to a serious mis-statement in an article on page 248 of Nature of 24 September. I do so because its damaging implications have caused grave concern amongst a number of my colleagues who realize how much trust your readers put in the reliability of what is reported in ...
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    Erratum (1981)
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    Nature 293 (1981), S. 758-758 
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    Notes: [Auszug] THE words on the cover of Nature of 10 September 1981 (issue no. 5828) were incorrect and should have read 'Newly generated nuclei in adult rods'. The cover photograph (relating to the letter 'Genesis of rods in teleost fish retina' by P. R. Johns and R. D. Fernald Nature 293, 141-142) was taken by ...
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    Electronic Resource
    Stability of zeolites under electron irradiation (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 759-759 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] RECENT electron microscopic studies1'2 of structural changes in zeolites under electron irradiation have led to the plausible assumption that water, normally contained in zeolites, is linked with the process. It is thought2 that the high-intensity electron bombardment, used for high-resolution ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/293759a0
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