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  • Articles  (3,978)
  • Nature Publishing Group  (3,978)
  • 1985-1989  (3,978)
  • 1987  (3,978)
  • 1
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    [s.l.] : Nature Publishing Group
    Nature 330 (1987), S. 688-688 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-We are all white scientists and, like Festenstein, Sachs, Hepple and Shall (Nature 328, 570; 1987), three of us were also born and bred in South Africa. However, despite the fact that we abhor apartheid, we choose to live and work in this country. In essence, Festenstein et al. argue that if ...
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  • 2
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    Nature 330 (1987), S. 689-689 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Theocharis and Psimopoulos state (allegedly paraphrasing Lakatos), that "if observations are theory-laden, this means that observations are simply theories". Rubbish. If, whenever I combine my visual observations with ballistics theory A, the falling cricket ball hits me on the head; but ...
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  • 3
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    [s.l.] : Nature Publishing Group
    Nature 330 (1987), S. 689-689 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Theocharis and Psimopolous have described the damage done to science by irresponsible philosophical scepticism and its popular derivatives. A similar point could be made about the destructive effects on personal and political morality. History shows the murderous consequences of the moral ...
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  • 4
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    [s.l.] : Nature Publishing Group
    Nature 330 (1987), S. 689-690 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-I was a contributor to the BBC's Horizon programme "Science . . . Fiction", of which Theocharis and Psimopoulos complain. Their article attacks the recent philosophy of science and, by implication, sociology and history of science as well. It contains many mistakes and non sequiturs. ...
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  • 5
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    [s.l.] : Nature Publishing Group
    Nature 330 (1987), S. 690-690 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-It is commonly assumed that the clinical manifestations of AIDS (acquired immune deficiency syndrome) follow an 'incubation period' which may be as short as months or as long as many years. 'Incubation' indicates a continuous process that, starting with its determinant cause, will produce its ...
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  • 6
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The principle of our assay is to separate specific DNA-binding proteins from complex mixtures of proteins, then resolve them by gel electrophoresis. Synthetic oligonucleotides or restriction fragments are covalently modified by the addition of a biotin group, mixed with either whole-cell or ...
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  • 7
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    Nature 330 (1987), S. 401-404 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The majority of evolutionary changes revealed by comparative studies of proteins and nucleic acids appears to fit the neutral theory of molecular evolution; that is, they could have become fixed by random drift of selectively neutral or nearly neutral mutations rather than by positive darwinian ...
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  • 8
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    Nature 330 (1987), S. 696-696 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE paper by Kilpatrick, Jones and Tyers on page 746 of this issue1 presents the first experimental evidence for the existence of the 5-HT3 subtype of receptors for 5-hydroxytryptamine (5-HT or serotonin) in the mammalian brain. This result could have important, exciting implications for the ...
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  • 9
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    Nature 330 (1987), S. 698-698 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIMILARITY, whether physical or biological, between different natural systems or components of a system, provides insight into their mechanics and, if expected, reassurance that understanding is soundly based. (It is perhaps more exciting if similarity is not found where it is expected, for then we ...
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  • 10
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    Nature 330 (1987), S. 197-197 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A MAN has been convicted in a British court this week on the strength of evidence from the 'genetic fingerprint' method pioneered by Dr Alec Jeffreys at Leicester University and published in Nature (317, 818; 1985). Robert Melias was sentenced to 8 years imprisonment for a rape committed in ...
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  • 11
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    Nature 330 (1987), S. 700-700 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE standard Big Bang model of the early Universe is tested observationally at two very different epochs. First, the observation of the 3-K microwave background discovered by Penzias and Wilson1 probes back to the time when the age of the Universe was about 105 yr (today the age of the Universe is ...
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  • 12
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    Nature 330 (1987), S. 701-701 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - McAllister and Roitberg1 recently reported evidence for 'adaptive suicide'2 in pea aphids (Acyrthosiphonpisum). The aphids were said to have three strategies of escape from predators: backing-up, running, and falling from the food plant. Parasitized aphids from dry regions used the falling ...
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  • 13
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    Nature 330 (1987), S. 701-701 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] SIR-I wish to question the reasoning behind a recent paper by McAllister and Roitberg1, intended to demonstrate apparently suicidal behaviour in parasitized pea aphids from British Columbia. Pea aphids were chosen because of their parthenogenetic mode of reproduction and low dispersal rate - both ...
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  • 14
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    Nature 330 (1987), S. 701-702 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-The deduced sequences of several complete vertebrate homoeobox complementary (c)DNAs have recently been published. We have searched for regions conserved in genes from frogs1"4, mice5"7 and humans89 and have found extensive amino-acid conservation of XlHbox 2, HHO.cl, XHox-36 and Hox 1.1 ...
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  • 15
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    Nature 330 (1987), S. 702-702 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Ekert1 concludes that there is no adequate explanation for the tenfold lower rate of conversion of infection with the human immunodeficiency virus (HIV) to clinical AIDS (acquired immune deficiency syndrome) in male haemophiliacs compared with other groups of HIV carriers. A possible ...
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  • 16
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    Nature 330 (1987), S. 703-703 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-In their article1 "Lead and child development", Davis and Svendsgaard refer to evidence that postnatal mental development of children may be adversely affected at (umbilical cord) blood-lead levels as low as 6-7 ug dl"1. The work to which they allude has now been published in full2. In the ...
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  • 17
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    Nature 330 (1987), S. 203-203 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DIRAC'S achievement in the late 1920s notwithstanding, people seem still to be brooding about the best way of making quantum mechanics relativistic. That, at least, is the burden of a long article by A. Kyprianidis, from the Poincare Institute in Paris, now published (Physics Reports 155, 1; 1987). ...
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  • 18
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    Nature 330 (1987), S. 206-206 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THERE is a continued need to develop vaccines against serous infections that do not permit the use of attenuated infective particles. Purified components of pathogens are often poorly immunogenic and in most cases do not induce relevant responses of cytotoxic T cells. One approach to vaccine ...
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  • 19
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    Nature 330 (1987), S. 211-212 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] TEN years ago, people were trying to introduce moist specimen chambers into the evacuated columns of electron microscopes as this seemed to be the only way in which cellular organelles an order of magnitude smaller than the wavelength of light could be observed in action. But in the past few years ...
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  • 20
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    Nature 330 (1987), S. 212-212 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] NEARLY one-fifth of the extragalactic sky lurks out of sight, obscured by dust and crowded by images of stars in the disk of our own Milky Way. Astronomers, suspecting with Jane Austen's Catherine, that the locked drawer contains more interesting objects than the open ones, have long wished to ...
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  • 21
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    Nature 330 (1987), S. 214-214 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] 1. Matthews. D.N., Bailey, A., Vaile, R A., Russell, G.J. & Taylor, K.N.R. Nature 328, 78(〉-787 (1987). MATTHEWS et al. reply-The mechanism suggested by Sarma etal. was rejected at an early stage in our studies. Simple calculation shows that the heat flow from the outside of a sample ...
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  • 22
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    Nature 330 (1987), S. 216-220 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Strontium, neodymium and lead isotopic data for samples from five volcanoes of the Maui Volcanic Complex, Hawaii, span nearly the total compositional range previously recognized for the Hawaiian islands. These data reveal a systematic compositional continuum for Hawaiian tholeiites which is ...
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  • 23
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    Nature 330 (1987), S. 233-235 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The X-ray source detected by the Ginga satellite has several notable features. Its intensity increased after t ~ 130 d but seems to have levelled out during t = 190-220 d. (Here / is the time since the neutrino burst10'11)- Its spectrum is hard yet extends down to at least 4 keV with no indication ...
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  • 24
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    Nature 330 (1987), S. 238-240 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The experiments were carried out using a version of the Meteorological Office 11-layer atmospheric model coupled to a 50 m 'slab' ocean and a one-dimensional model of sea-ice5. The original surface temperature scheme was replaced with a four layer soil temperature model which allows explicitly for ...
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  • 25
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    Nature 330 (1987), S. 709-710 
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    Notes: [Auszug] THE US National Commission on Space has recently provided an exciting vision of the next half-century of space research and exploration1. The long-term goals are the advancement of science, exploration and the eventual settlement of the Moon and Mars, and stimulation of space enterprise for the ...
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  • 26
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    Nature 330 (1987), S. 716-721 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Combined analyses of new geophysical data in the northern Red Sea with data from the Gulf of Suez and the Gulf of Aqaba–Dead Sea rift strongly suggest that the development of the Red Sea took place in three stages: (1) a 'Gulf of Suez' stage in the Oligocene, accompanied by thinning of the ...
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  • 27
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    Nature 330 (1987), S. 248-251 
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    Notes: [Auszug] Periodicity of extinctions has received much attention recently, both as concerns the phenomenon1'18 and possible explanations for it12'26. Raup and Sepkoski1 initially analysed a subset culled from Sepkoski's Compendium of Fossil Marine Families27 covering the last 250 million years (Myr) (late ...
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  • 28
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    Nature 330 (1987), S. 259-262 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Human interleukin-2 (IL-2) is secreted by helper T (CD4) lymphocytes in response to antigenic stimulation and is important for the activation of specific and non-specific immune responses. The human gene encoding this small glycoprotein has been identified, sequenced, and expressed in bacterial and ...
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  • 29
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    Nature 330 (1987), S. 256-259 
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    Notes: [Auszug] The SV40-derived recombinant vector used to express the CD4 protein is essentially identical to that used previously to produce large amounts of the influenza haemagglutinin glycoprotein in CV1 cells12. The cDNA sequences are transcribed under the control of the SV40 late promoter and replace the ...
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  • 30
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    Nature 330 (1987), S. 277-277 
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    Notes: [Auszug] Bones of Contention: Controversies in the Search for Human Origins. By Roger Lewin. Simon & Schuster: 1987. Pp. 348. $19.95. "THERE are only two kinds of science", a colleague remarked to me recently, "good science and bad science". What, one wonders, are the hallmarks of each? Surely, ...
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    Nature 330 (1987), S. 279-279 
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    Notes: [Auszug] The Great Journey: The Peopling of Ancient America. By Brian M. Pagan. Thames & Hudson, London/W. W. Norton, New York: 1987. Pp. 288. £14.95, $19.95. EXPLAINING the presence of America's indigenous population has exercised the minds of scholar and layman alike ever since Columbus ...
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  • 32
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    Nature 330 (1987), S. 280-280 
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    Notes: [Auszug] An Urchin in the Storm: Essays About Books and Ideas. By Stephen Jay Gould. W. W. Norton: 1987. Pp. 255. $18.95. A RECENT review in these columns of a book entitled Communicating Science to the Public pointed out that the symposium it reflected had contained no contributions from the "great ...
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  • 33
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    Nature 330 (1987), S. 282-282 
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    Notes: [Auszug] The Essential Darwin. Edited by Mark Ridley. Unwin Hyman, London: 1987. Pp. 271. £14.95.* *In the United States published by W.W. Norton as The Darwin Reader, price $19.95. IT MUST be a source of wonder to scientists not daily engaged in evolutionary biology that the words of ...
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    Nature 330 (1987), S. 285-285 
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    Notes: [Auszug] The Dread Disease: Cancer and Modern American Culture. By James T. Patterson. Harvard University Press: 1987. Pp.380. $25.95, £20.75 IN 1970, the US Congress unanimously resolved that cancer should be cured by 1976 "as an appropriate commemoration of the two-hundreth anniversary of the ...
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    Nature 330 (1987), S. 291-291 
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    Notes: [Auszug] Quiddities: An Intermittently Philosophical Dictionary. By W.V. Quine. Harvard University Press: 1987. Pp. 249. $20 ,£15.95. OVER half a century ago, a young Harvard professor of logic and philosophy published an article expressing doubts about some of the central themes of logical ...
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    Nature 330 (1987), S. 292-292 
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    Notes: [Auszug] The Art of Scientific Writing: From the Student Report to Professional Publications in Chemistry and Related Fields. By Hans F. Ebel, Claus Bliefert and William E. Russey. VCH: 1987. Pp. 493. Hbk DM98, $59.95, £39.25; pbk DM48, $24.95, £19.25. PEOPLE who draft patents are apt ...
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    Nature 330 (1987), S. 96-96 
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    Notes: [Auszug] HICCOUGHS notwithstanding, it seems that the treaty to abolish land-based missiles of intermediate range (INF) will be signed at some stage later in the year. That seems the burden of the visit two weeks ago to Washington of the Soviet Foreign Minister, Mr Edward Shevardnadze. President Reagan ...
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    Nature 330 (1987), S. 98-98 
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    Notes: [Auszug] New Delhi A VACCINE that sterilizes bulls, developed by biotechnologists at the National Institute of Immunology (Nil) at New Delhi, is to be used as a key tool in India's campaign to boost milk production. Tests carried out at government farms have shown that bulls become 100 per cent ...
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    Nature 330 (1987), S. 97-97 
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    Notes: [Auszug] THE European Commission is calling for a £14-million expansion of its biotechnology programme to update information systems, improve training and make room for new European Community members Spain and Portugal. The present £38 million programme expires in 1989. A five-year follow-on ...
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    Nature 330 (1987), S. 99-99 
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    Notes: [Auszug] San Francisco THE largest effort to date to study the effectiveness of AIDS education in preventing infection by the virus is being funded by the National Institute of Mental Health (NIMH) and the National Institute of Drug Abuse (NIDA) at three centres around the country. Those who have been ...
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    Nature 330 (1987), S. 749-752 
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    Notes: [Auszug] Chaos theory focuses on the analysis of a behaviour that, while apparently random, has limited boundaries and can be quite stable. On the other hand, the term 'chaotic' has been used by cardiac electrophysiologists to describe fibrillatory cardiac activity in which excitation occurs in a seemingly ...
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    Notes: [Auszug] Fig. 1 Time course of voltage-induced Cl~ channel activation. Successive records were obtained at times shown at the right margin and at holding potentials given at the left margin. Membrane voltage is expressed with respect to pipette as reference; upward current deflections are outward currents, ...
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    Nature 330 (1987), S. 754-758 
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    Notes: [Auszug] Dystrophin messenger RNA3'5'6'9 and protein7 are present in all types of mature, terminally differentiated muscle tissue. Dystrophin is thought to have a structural role in myofibres because of its high degree of conservation between mice and humans, the 'structural' characteristics of the ...
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    Nature 330 (1987), S. 113-114 
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    Notes: [Auszug] PLASMA lipoproteins, agents provocateurs of atherosclerosis, are implicated in half of all deaths in industrialized countries. The penumbra surrounding these lipid-laden troublemakers is finally being stripped away by the techniques of molecular biology. The two latest revelations concern the ...
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    Nature 330 (1987), S. 116-116 
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    Notes: [Auszug] THOMPSON AND GARDNER REPLY-There are three potential problems that might cause a laser guide star to move relative to natural background stars: laser jitter, non-sidereal motion of the telescope, and low frequency atmospheric disturbances. Problems of laser jitter can be removed by monitoring ...
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    Nature 330 (1987), S. 104-104 
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    Notes: [Auszug] SIR - Further to David Tepfer's all too legitimate list of questions about the source of the sequenced human genome (Nature 329, 480; 1987), add the following. Should the person be male or female? Should he/she be alive or freshly dead (how much tissue do the molecular biologists need - an arm, a ...
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    Nature 330 (1987), S. 123-126 
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    Notes: [Auszug] Two years ago, we published an article charting the decline in British science between 1973 and 1982'. This was one of the .earliest such attempts to assess Britain's scientific performance. The indicators employed, which are based on cross-national publication and citation data, were still in a ...
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    Nature 330 (1987), S. 127-131 
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    Notes: [Auszug] The relationship between greenhouse-gas forcing, global mean temperature change and sea-level rise due to thermal expansion of the oceans is investigated using upwelling–diffusion and pure diffusion models. The sensitivities of sea-level to short-timescale forcing and deep-water formation ...
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    Nature 330 (1987), S. 142-144 
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    Notes: [Auszug] The standard mechanism for a star explosion leaving a neutron star is the collapse of the iron core of a massive star5"10. During the initial phase of the collapse, a sizeable fraction of the protons transform into neutrons9, with the emission of a ve of energy =^10 MeV. The collapse phase lasts ...
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    Nature 330 (1987), S. 148-151 
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    Notes: [Auszug] Photoelectrochemical studies have often focused on solid-state aspects of the systems, accessing available models for analogous solid-state devices. The polysulphide electrolyte used in the n-CdX/S2~ PEC system, formed by the simple dissolution of a sulphide salt and sulphur in water, is ...
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    Nature 330 (1987), S. 153-154 
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    Notes: [Auszug] The fundamental concept of Mossbauer imaging is that, by imposing a velocity gradient on the absorber, different spatial locations in the absorber will experience different velocities relative to the source; in this way, the resonant absorption distribution will be spatially resolved. The spatial ...
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    Nature 330 (1987), S. 772-773 
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    Notes: [Auszug] In previous studies it has been supposed that, on electron loss, either carbon-centred radicalsor specific side-group cations such as Trp*+ or TyrlH" are formed6'7. But in our view, the former must be secondary species and the latter will only dominate if the primary hole centres are mobile. Our ...
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    Notes: [Auszug] Activation of mature T lymphocytes is initiated through interaction of ligand or antibody with the T cell antigen receptor complex (TcR or T3) (refs 10-12). This interaction stimulates Ca2+ mobilization and proliferation in the presence of IL-2 (refs 13-15). We report here the induction of Ca2+ ...
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    Notes: [Auszug] Fig. 1 Sampling location and air trajectories of Mediterranean aerosol samples (A: October 17-18, 1981; B: October 25, 1983; C: October 23-24, 1983). The travel time of the air between two successive crosses is 12 h. The air trajectories are calculated over a period of 4 d, arriving at the 925-hPa ...
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    Nature 330 (1987), S. 591-591 
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    Notes: [Auszug] Washington THE optimism and enthusiasm at last week's summit meeting here between General-Secretary Mikhail Gorbachev and President Ronald Reagan spilled over into science during a nearly simultaneous meeting between members of the Soviet and US academies of science. Frank Press, president ...
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    Nature 330 (1987), S. 6-6 
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    Notes: [Auszug] London CZECHOSLOVAKIA'S import regulations governing personal computers are ill-conceived and encourage technical backwardness, according to the Czech party daily, Rude Pravo. The present regulations base the duty payable on the memory capacity, which, the paper admits, may seem ...
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    Notes: [Auszug] Table 1 Nucleotide sequence differences between molecular clones of HTLV-4, STLV-3AGM and STLV-3(SIV)Mac HTLV-4/PK82 provirus A PKE102 compared with: HTLV-4/PK190 cDNApV2 STLV-3AGM/K78 provirus A K2-10 STLV-3AGM/K6W provirus STLV-3AGM/K1 cDNA pBS3 STLV-3 AGM/K6W provirus compared ...
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    Nature 330 (1987), S. 190-192 
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    Notes: [Auszug] LEFT-SIDED entry glove boxes are new from Labconco, in booth 735 (Reader Service No. 101). Four models - models 50000, 50002, 50004 and 50350 - are equipped with the left-sided access door, which has an opening of over 370 square inches. All have 8-inch diameter glove ports, fitted with size 93/4 ...
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    Nature 330 (1987), S. 3-3 
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    Notes: [Auszug] London PROPOSALS to create a three-tier system of science research and teaching within British higher education have brought almost universal condemnation from the scientific community, with representative bodies united in their opposition. Last July, in response to a ...
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    Nature 330 (1987), S. 9-9 
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    Notes: [Auszug] New Delhi AFTER two years of negotiations, the United States has agreed to export a supercomputer to India for use in monsoon research. An agreement was signed last month, a few days before Prime Minister Rajiv Gandhi's scheduled meeting with President Reagan in Washington. ...
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    Nature 330 (1987), S. 12-13 
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    Notes: [Auszug] THE brain appears to be a parallel computer constructed out of slow and expendable processing units. Its power presumably derives from the way in which these units - the neurons - are wired up. But how can relatively simple processors be connected to carry out interesting computations? Recent ...
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    Nature 330 (1987), S. 14-14 
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    Notes: [Auszug] NEW techniques developed by the Canadian scientist Thomas Loy have led to the discovery of Neanderthal blood on a stone tool from a site in Iraq, and to the accurate identification of the animal species on which other stone tools were used. Extracting blood from stones is likely to be of great ...
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    Nature 330 (1987), S. 18-19 
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    Notes: [Auszug] IN most closed plant communities, establishment of seedlings is rare; much of the spatial change in the vegetation is caused by clonal growth, for example, by the production of stolons and rhizomes that can vary in both length and persistence. By clonal growth, an individual plant can disintegrate ...
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    Nature 330 (1987), S. 26-27 
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    Notes: [Auszug] STOTHERS REPLIES-Stigler criticizes two aspects of my formal tests for statistical significance of an apparent 30-Myr periodicity in the Earth's magnetic reversals'. First, he argues that, as the correlation coefficient between any two sequences of numbers is independent of whatever constant factor ...
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    Nature 330 (1987), S. 595-595 
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    Notes: [Auszug] London A 20 PER cent cut in the number of short-term grants to university scientists from the UK Medical Research Council (MRC) and a decrease in the proportion of medium-term proposals that can be supported are inevitable for the coming year. The former cut is the least damaging way to absorb ...
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    Nature 330 (1987), S. 31-32 
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    Notes: [Auszug] REVOLUTIONARY progress in particle physics over the past two decades has given birth to a radically new and simple view of the fundamental constituents of matter and the interactions among them. Quarks and leptons, at least 1,000 times smaller than the nucleus, if not truly structureless and ...
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    Nature 330 (1987), S. 21-24 
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    Notes: [Auszug] SINCE the report a year or so ago, by J.G. Bednorz and K.A. Miiller, that certain transition metal oxides are superconductors at unprecedentedly high temperatures, there has been a torrent of experimental and theoretical research aimed at defining the characteristics of these materials, ...
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    Notes: [Auszug] SIR-Tiedemann1 has recently commented on our paper2 on the resonance effects of the September 1985 earthquakes in Mexico City. Some of his comments and proposed 'rules' are quite relevant and deserve a detailed answer. However, in his opening statement he implies that the distribution of damage ...
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    Notes: [Auszug] P. L. MCFADDEN COMMENTS-Stigler1 claims that Stothers'2 use of a correlation coefficient between two monotonically increasing sequences is inappropriate as a formal test for the existence of a 30-Myr period in the magnetic reversal sequence. I agree with Stigler on this point and Stothers'3 ...
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    Nature 330 (1987), S. 62-63 
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    Notes: [Auszug] Wild-type flies show a slight preference for concentrations of NaCl up to 10 mM. Salt concentrtions above this inhibit inges-tion. The preference of gustB mutant flies for NaCl in such feeding tests is markedly greater (Fig. 1 A). A similar preference for NaCl is evident in proboscis extension ...
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    Nature 330 (1987), S. 68-71 
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    Notes: [Auszug] Retinal pigmented epithelial cells were obtained by dissection and subsequent enzymatic dissociation of RPE from the posterior two-thirds of the eyes of Rana catesbienna tadpoles. After one week of primary culture on a plastic substrate, the RPE cells were subcultured in multi-well plates on one of ...
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    Nature 330 (1987), S. 597-597 
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    Notes: [Auszug] Washington ONE of Albert Einstein's oldest manuscripts on the theory of relativity has been sold to an unidentified bidder at an auction at Sotheby's in New York for $1.2 million. The 72-page manuscript, written between 1911 and 1912, had been expected to sell for more than $700,000 (see ...
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    Nature 330 (1987), S. 53-56 
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    Notes: [Auszug] Microdioritic enclaves have been observed in intermediate granitoids throughout the world1"14. Typically, these enclaves are of spherical to discoid shape with a well-defined size range seldom exceeding 1 m in diameter, a feature probably related to the ascent velocity and/or yield strength of the ...
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    Nature 329 (1987), S. 751-751 
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    Notes: [Auszug] San Francisco IN an action that backs the right of US nuclear weapons laboratory employees to voice dissenting views, the University of California (UC) has settled a personnel grievance filed by Lawrence Livermore Laboratory scientist Roy Woodruff. Woodruff, who resigned in October 1985 ...
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    Nature 329 (1987), S. 753-753 
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    Notes: [Auszug] Munich NATIONS from East and West took steps toward an unprecedented cooperation in nuclear fusion in an agreement signed in Vienna on 19 October. Representatives from the Soviet Union, Europe, Japan and the United States agreed to meet in Garching, West Germany, for at least four months ...
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    Notes: [Auszug] London THE Upjohn pharmaceutical company has embarked on a new collaborative venture with Furopean academic institutions in an attempt to identify products with the potential for commercial exploitation. The first of a series of 'European Discovery Centres' was formally established last week ...
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    Nature 329 (1987), S. 756-756 
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    Notes: [Auszug] Tokyo JAPAN has been severely criticized for its plans to carry out 'scientific whaling' in the Antarctic during the coming austral summer. And, under threat of retaliation by the United States, the Fisheries Agency has drastically cut Japan's proposed whale catch for the next season. But what ...
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    Nature 330 (1987), S. 89-90 
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    Notes: [Auszug] Thermal analysis techniques have been used to study the stoichiometry of superconductors. As the critical temperatures of the materials rise, thermal analysis will open the door to further ...
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    Nature 329 (1987), S. 750-750 
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    Notes: [Auszug] ▪ Once in a lifetime gales cause friction ▪ Met. Office set up internal inquiry London BRITAIN'S Secretary of State for Defence, Mr George Younger, has ordered an independent inquiry into the failure of the Meteorological Office to forecast the storms that caused extensive damage ...
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    Nature 329 (1987), S. 765-766 
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    Notes: [Auszug] THE annual divorce rate in monogamous animals can be defined operationally as the percentage of pairs mated in one year, both of whose members survive to the next year and remate with new mates rather than with each other. In well-studied bird species, the divorce rate averages 21 per cent but ...
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    Nature 329 (1987), S. 768-768 
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    Notes: [Auszug] "To analyse the patient - that is to separate his mental processes into their elementary constituents and to demonstrate these instinctual elements in him singly and in isolation". These are the words Freud used1 to make an analogy between psychoanalysis and chemical analysis. It is immediately ...
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    Notes: [Auszug] THE joys of 'university' status seem to be proving too much for the binary structure of Australia's higher education system. This week a second of the institutes of technology that provide the lower tier of higher education chose to be reshaped as a university. Others are anxious for change ...
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    Notes: [Auszug] London POLAND last week abolished its Ministry of Science and Higher Education. A new Ministry of National Education will now cover the entire range from kindergarten to postgraduate. What will become of the "science" sector is not entirely clear. Questioned on Warsaw Television on Monday, the ...
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    Notes: [Auszug] London PROSPECTS look grim for the high-energy physics community in Britain. According to physicists at a meeting in Geneva last week, a forthcoming report by Professor Anatole Abragam, of the College de France, will not meet British demands for substantial cuts in the budget of CERN, the ...
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    Nature 329 (1987), S. 758-758 
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    Notes: [Auszug] SIR-A social movement for the harvesting of embryos for medical, utilitarian and possibly even commercial reasons seems to be a real possibility. Recent discoveries12 suggest that a number of neurological disablements may be alleviated, if not cured, by fetal brain grafts. Consider, then, the ...
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    Notes: [Auszug] BEFORE the end of the year, probably before the end of November, the British government will be coming to a decision about the future of British membership of the European Nuclear Research Organization (really a high-energy physics laboratory) at Geneva. Even those who believe the British prime ...
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    Notes: [Auszug] ARGUMENTS about the mechanism of high-temperature superconductivity often concern the arrangement of oxygen atoms in the crystals. More precisely, there is strong evidence that vacancies left by missing oxygen are ordered. However, controversy surrounds the ability of high-resolution transmission ...
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    Nature 329 (1987), S. 792-792 
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    Notes: [Auszug] THE youngest institute people have the hardest time. Typically, they will have first entered their institute after their third undergraduate year and will have done well enough (half do not) to be kept on for the usual three-year stint working for the degree of cadidate of science (the Soviet ...
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    Nature 330 (1987), S. 615-615 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Scrutinizing accounts of the towns of Cologne, Aix-la-Chapelle, Wesel, Arn-hem, Bruges, Deventer, Ghent, Leyden, Nijmegen Rotterdam and Zutphen in the fourteenth century (transcribed and edited in the nineteenth and twentieth centuries)1^6,1 was struck by the frequency with which crossbow ...
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    Nature 329 (1987), S. 771-772 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT all began one August day in 1684 when Dr Edmond Halley paid a visit to Isaac Newton's rooms in Cambridge; of that meeting Abraham de Moivre tells us that After they had been some time together, the Dr asked him what he thought the Curve would be that would be described by the Planets ...
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    Nature 330 (1987), S. 617-618 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SOME of the decisive aspects of Galileo's trial for heresy in 1633 are unknown and will always remain so; for this reason the process and its background are destined to retain an air of mystery and intrigue. One of the main reasons for this is that two quite crucial episodes were private interviews ...
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    Nature 329 (1987), S. 781-781 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE Praesidium of the Academy of Sciences of the USSR is housed in the former mansion (now overrun by central Moscow) of a rich iron and steel family, with a handsome cast-iron staircase to advertise the family's wares. Three hundred metres away is a new white skyscraper (tall by Moscow's alluvial ...
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  • 93
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    Nature 329 (1987), S. 807-809 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The total energy output W*N per supernova in protons with kinetic energy Ep ^ 1 GeV can be found phenomenologically3 from the observed CR energy density, Wp(£p〉lGeV)^ 1.4xlO~12ergcm~3, the mass of gas in the Galaxy, Mg" 6 x 109M©, the mean pathlength of CR, x ~ 5 g cm"2, and the SN ...
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    Nature 329 (1987), S. 816-819 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Figure la shows the geomagnetic reversal rate for the past 150 Myr, calculated as described in the legend, using the reversal timescale used in the construction of a recently published eustatic sea-level curve1. An abbreviation for this data will be RF(T), T being geological time in Myr before ...
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  • 95
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] Table 1 Antagonistic potencies of linear analogues of a cyclic vasopressin antagonist No. Antagonist* I 2 3456789 CH2CO-D-Tyr(Et)-Phe-Val-Asn-Cy-Pro-Arg-Gly-NH2§ I S----------------- S CH2CO-D-Tyr(Et)-Phe-Val-Asn-Cy-Pro-Arg-Gly-NH2|| V-/SH ...
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  • 96
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    Notes: [Auszug] The sea urchin, Paracentrotus lividus, has 22 tRNA genes in mitochondrial (mt) DNA (refs 1, 2) as do the mtDNAs of all other metazoan phyla tested3'4. In every case there are two genes for leucine, two for serine, and one each for the remaining 18 amino acids. However, the arrangement of the tRNA ...
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    Nature 329 (1987), S. 657-657 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] NEXT month's ministerial meeting of the European Space Agency (ESA) at The Hague on 9 and 10 November promises to be rowdy. The central issue (see page 660) is whether the thirteen member governments will endorse ESA's development programme for the coming decade, and thus implicitly agree that its ...
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    Nature 330 (1987), S. 629-631 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Ribes et al.5 argue that their analysis of the measurements of Picard and Philippe and Gabriel-Philippe de la Hire shows that the observed solar diameter, uncorrected for systematic errors, was 32' 9" for the period 1666-82, and then decreased smoothly to 32'6" over the period 1683-1718. The ...
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    Nature 330 (1987), S. 632-635 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In its classical formulation, the Oort cloud6 comprised 1011-1012 comets orbiting the Sun in a spherical shell extending from 104 to 105 AU. Perturbations by passing stars (and, we now know, by molecular clouds and galactic tides) would send some of these comets into the inner solar system where ...
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    Nature 329 (1987), S. 814-816 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The formal application of the conservative field assumption: curl E = 0 (1) to the transient decay of fields in an ohmic medium considering only conduction and displacement currents, leads to characteristic transient solutions of the form: where rr is the 'relaxation time', at ...
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