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  • 1985-1989  (77,678)
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  • 1
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    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 342 (1989), S. 107-107 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE commercial-sector space mission Juno has announced the four final candidates from whom Britain's first astronaut will be chosen. They are Gordon Brooks, a 33-year-old physician in the Royal Navy; Major Timothy Mace of the Army Air Corps, also 33; Clive Smith, 27-year-old aerospace lecturer at ...
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  • 2
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    Nature 342 (1989), S. 109-109 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE outlook for the proposed US space station Freedom looks bleak after a showdown last week between officials from the National Aeronautics and Space Administration (NASA) and members of the US House of Representatives Committee on Science, Space and Technology. The committee's support has been ...
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  • 3
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    [s.l.] : Nature Publishing Group
    Nature 342 (1989), S. 112-112 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] London THE East German Academy of Sciences last week issued a statement calling for appointments to management posts in science, education, the health service and the economy to be made on merit, not by Party allegiance. In what amounts to a rejection of the nomenklatura system, the Presidium ...
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  • 4
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    Nature 342 (1989), S. 113-113 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIRá€"Stephen Jay Gould seems to be both right and wrong in his defence of the word 'attendee' to describe someone who attends a meeting (Nature 340,424; 1989). He is no doubt right to say that the Oxford English Dictionary recognizes the use of the word, but he is surely wrong in ...
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  • 5
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    Nature 342 (1989), S. 114-114 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIRá€"One method to slow rising journal costs (Nature 341, 349-350; 1989) is to put more of the publication costs on the authors, because they receive the major benefits of their publications. Many learned societies already have page charges and lower subscription costs than ...
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  • 6
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    Nature 342 (1989), S. 126-126 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] LASER SNOW is the name given to powdery clouds first observed by A. Tarn, G. Moe and W. Happer in a caesium vapour exposed to laser light (Phys. Rev. Lett. 35, 1630-1633; 1975). It seems that the grains consist of caesium hydride, made when caesium atoms excited by the laser radiation react with ...
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  • 7
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    Nature 342 (1989), S. 130-130 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE hovercraft supports itself on a cushion of pressurized air, maintained between its underside and the ground. But lacking sides, the cushion leaks absurdly freely. Air has to be pumped down into it at an enormous rate to sustain the pressure. Daedalus is now designing a novel leak-proof ...
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  • 8
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    Nature 342 (1989), S. 129-130 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE enormous diversity of life is the result of many evolutionary radiations over billions of years. Key questions about the overall diversification of life and especially individual adaptive radiations were tackled at a recent meeting*. The best-known example of radiation, that of the ...
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  • 9
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    Nature 342 (1989), S. 132-132 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] MARTIN, GIERL AND SAEDLER REPLYá€" Molecular phylogenies13 and estimates of angiosperm age14 were derived many years ago through protein sequencing of plant mitochondrial cytochrome c in the laboratory of Don Boulter. The ages suggested in these pioneering studies vastly exceeded ...
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  • 10
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    Nature 342 (1989), S. 133-133 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIRá€"According to the Milankovitch theory1'2 external climatic forcing results from changes in the orbital parameters of the Earth's path around the Sun which affect the amount of solar radiation received at the top of the atmosphere. The main periods during the past 5 Myr of the ...
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  • 11
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    Nature 342 (1989), S. 134-134 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIRá€"We would like to point out a similarity between the DNA-binding domain of the Myb family of proteins and homoeodomain-containing factors. This relationship indicates a common ancestry for the DNA-binding domains of these two classes of eukaryotic nuclear regulatory proteins, ...
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  • 12
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    Nature 342 (1989), S. 139-142 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Large asteroid impacts produced globally lethal conditions by evaporating large volumes of ocean water on the early Earth. The Earth may have been continuously habitable by ecosystems that did not depend on photosynthesis as early as 4.44 Gyr BP (before present). Only a brief interval after 3.8 Gyr ...
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  • 13
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    Nature 342 (1989), S. 161-163 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] L1641 is the nearest (480 pc) giant molecular cloud in Orion showing evidence of extensive recent star formation5"7, and therefore providing a unique opportunity to carry out the statistical study required to address the evolutionary status of molecular outflow. We focus on the area of L1641 at ...
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  • 14
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The nm23 complementary DNA was identified by differential hybridization to messenger RNA from K-1735 melanoma lines of varying metastatic potentials2; nm23 RNA levels were uniformly reduced in high metastatic potential rodent cell lines (Fig. la). Human infiltrating ductal breast carcinomas from ...
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  • 15
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    Nature 342 (1989), S. 189-192 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have recently described a monoclonal antibody, designated mAb 5.5, that recognizes an epitope present in p8 and p!4 (refs 5, 6; I.E. et al, manuscript in preparation). In vivo the two proteins are noncovalently associated as a heterodimeric complex, indicating that they function as a dimer (J.E. ...
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  • 16
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Stimulation of human neutrophils with a variety of agents induces microbicidal responses which include the generation of superoxide anion at the cell surface1'3. The plasma membrane superoxide-generating system consists of a flavoprotein NADPH-oxidase4, which oxidizes intracellular NADPH, thereby ...
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  • 17
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    Nature 342 (1989), S. 2-2 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] GOVERNMENTS everywhere have well-tried ways of avoiding unwelcome advice. One is to respond energeti-cally to the least unpalatable bits and to ignore the rest. That is how the British government responded, in 1982, to the trenchant and prophetic complaints of the House of Lords Select Committee on ...
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  • 18
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    Nature 342 (1989), S. 4-4 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] New Delhi ACCURATE predictions of the behaviour of the Indian monsoon for the past two years have bestowed a new confidence on the scientists of the Indian Meteorological Department (IMD) and their new long-range forecasting model. Monsoon fore-casts have great economic and even poli-tical ...
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  • 19
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    Nature 342 (1989), S. 6-6 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] Sydney CONCERN over the fate of South-East Asian rainforest has led Australian labour unions to take an interest in ecology. The Building Workers Industrial Union (BWIU) for the state of Victoria, noting the daily loss of 11 square kilometres of Malaysian forest, has banned the use of imported ...
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  • 20
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    Nature 342 (1989), S. 8-8 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] Munich THE uncertain life of the West Berlin Academy of Sciences, which must leave its present home by July next year, seems destined to continue. Criticism from the opposition Social Democrats (SPD) in the Land of Hesse may prevent the beleaguered academy from moving there, despite earlier ...
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  • 21
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    Nature 342 (1989), S. 9-9 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] Washington A BATTLE over the lucrative market for the widely used DNA amplification tech-nique PCR (polymerase chain reaction) has set the US biomedical research com-munity buzzing. When Dupont announced in August a challenge to the PCR patents owned by Cetus (see Nature 341, 418; 1989) it ...
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  • 22
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    Nature 342 (1989), S. 12-12 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] SIRá€"Although one instinctively feels that all information is of value, the data quoted in your recent News and Views comment (Nature 341, 181; 1989) on the British National Survey of Sexual Attitudes and Lifestyles suggest that Mrs Thatcher was right to doubt its value. You ...
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  • 23
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    Nature 342 (1989), S. 15-16 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] ATMOSPHERIC conditions can vary over a vast spectrum of timescales á€" extending up to the Milankovic cycles operating over millenia and forced by variations in the Earth's orbit. But James and James warn on page 53 of this issue1 against reading too much into correlations between ...
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  • 24
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    Nature 342 (1989), S. 20-21 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] GIVEN the wide public concern about the scale of rise in sea level that will occur as a result of the current global warming, many will be intrigued by new studies1 by J. Shaw of flooding events at the end of the last glacial. From the evidence of erosion and deposition in Saskatchewan, Canada, ...
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  • 25
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    Nature 342 (1989), S. 24-24 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] SIRá€"The SIR4 protein in the yeast Saccharomyces cerevisiae is required for transcriptional silencing of the HM mating-type loci and for high mitotic stability of silencer-containing plasmids. As a result of comparing the sequences of proteins involved in DNA replication and ...
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  • 26
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    Notes: [Auszug] Cloning and expression of functional P400 protein from cerebellar Purkinje neurons shows that this protein is a receptor for inositol 1,4,5-triphosphate, a second messenger that mediates the release of intracellular ...
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  • 27
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    Notes: [Auszug] Thin films, in which we expect both different defects and a far higher defect density, can sustain supercurrents of 〉4x 105Acm~2 at 77 K and 20 kOe, with low dissipation levels4 (measured by magnetization). Until now, such high values have not been reported in bulk YBa2Cu3O7. Various methods of ...
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  • 28
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    Nature 342 (1989), S. 65-69 
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    Notes: [Auszug] Guaymas Basin, located in the central part of the Gulf of California, is part of a rift zone that links the East Pacific Rise in the south with the San Andreas Fault leading north. The tectonic graben-like basin is covered by thick layers of sediments (up to ~500m), consisting of diatomaceous ooze ...
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  • 29
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    Nature 342 (1989), S. 76-78 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] The source of immunoglobulin mRNAs was a hybridoma cell line expressing a catalytic IgGj antibody (6D4) which binds a low molecular weight phosphonate ester (P3) and catalyses the hydrolysis of certain carboxylic esters. Constructs used for immunoglobulin expression in plants consisted of ...
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  • 30
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    Notes: [Auszug] The Ins(l,4,5)P3 receptor protein was solubilized using CHAPS as a detergent, rather than Triton X-100 which has been used previously2, because Triton detergent is not compatible with the dialysis technique of vesicle reconstitution.5'6 The Ins(l,4,5)P3 receptor protein was purified as previously ...
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  • 31
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    Nature 342 (1989), S. 99-100 
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    Notes: [Auszug] MURINE monoclonal antibodies (mAbs) conjugated to drugs, isotopes, or toxins are being utilized as the targeting com-ponents of diagnostic and therapeutic agents for cancer, cardiovascular and other diseases. However, because of the limitations of administering nonhuman proteins, efforts to ...
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  • 32
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    Nature 341 (1989), S. 673-674 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] CALIFORNIANS are almost as taken aback that last week's earthquake should have killed fewer than 200 people as by the circumstance that there should have been a further relief of stress on the San Andreas Fault (see pages 676 and 677). In spite of the tragedy that now afflicts the families bereaved ...
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  • 33
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    Nature 341 (1989), S. 675-675 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] Washington ON Wednesday, 18 October, the spacecraft Galileo finally began its six-year journey to Jupiter. The space shuttle Atlantis took off after one more day of delay, due to weather, at 12.53 p.m. About seven hours later Galileo, released from the shuttle cargo bay, was steered by its own ...
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  • 34
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    Nature 341 (1989), S. 678-678 
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    Notes: [Auszug] Washington THE deputy director of the National Institute of Child Health and Human Development, Antonia Novello, is likely to be the next surgeon-general of the United States, replacing the forthright C. Everett Koop who left earlier this year. Selection of a replacement has been slow, it is ...
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  • 35
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    Nature 341 (1989), S. 680-680 
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    Notes: [Auszug] London BELIEVING that a more humane alternative now exists, the European Commission has decided to put a stop to the assessment of the toxicity of chemicals by the present LD50 (lethal dose — 50 per cent) criterion, in the determination of which large numbers of animals are killed. The ...
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  • 36
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    Nature 341 (1989), S. 682-682 
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    Notes: [Auszug] SIRá€"The view of the National Institutes of Health Investigating Committee as reported in Nature (340, 173; 1989) is surely mistaken. Plagiarism is not "at least as serious a misconduct in science as outright fabrication of experimental data". Both fabrication and plagiarism are ...
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    Nature 341 (1989), S. 683-685 
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    Notes: [Auszug] No ONE with any sense disagrees with the British government's aim to make the country's National Health Service (NHS) more effective. It is ironic therefore that its proposals for re-organization laid out in the White Paper Working for Patients, a statement of the government's intentions published ...
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    Nature 341 (1989), S. 689-689 
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    Notes: [Auszug] EPITAXY, from the Greek 'arranged upon', describes a mode of crystal growth in which the atoms of one crystal are registered perfectly on the atoms of another. (DNA can also be regarded as a kind of epitaxial structure, Watson and Crick originally suggesting that one DNA helix 'crystallizes' on ...
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    Nature 341 (1989), S. 690-691 
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    Notes: [Auszug] SINGLE-CELL recordings from both vertebrate and invertebrate neuronal networks suggest that certain types of neurons can be identified by their unique physiological characteristics. Usually, the local connections made by the cell are unknown, but it is generally assumed that each cell's functional ...
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    Nature 341 (1989), S. 693-694 
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    Notes: [Auszug] ALTHOUGH both environmental and genetic factors are believed to contribute to the pathogenesis and etiology of multiple sclerosis (MS), it is the genetic contribution which is attracting most attention in research laboratories at present, and which was the main focus of a recent workshop*. The ...
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    Nature 341 (1989), S. 695-695 
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    Notes: [Auszug] SIRá€"Robert May (Nature 341, 386-387; 1989) has Haldane's famous beetle story elicited by a question from Jowett. Haldane was born (in Oxford) on 5 November 1892, Jowett died on 1 October 1893, having left Oxford in September of that year. So while they could have met, they ...
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  • 42
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    Nature 341 (1989), S. 697-698 
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    Notes: [Auszug] THE recent flight past Neptune by Voyager 2, the culmination of a 12-year journey of discovery in the outer Solar System, was a triumph for the brand of space exploration championed by Bruce Murray in his book Journey into Space. With a relatively modest expenditure of money compared to annual ...
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    Nature 341 (1989), S. 699-699 
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    Notes: [Auszug] The Eagle Nebula (M16) - a detail taken from one of the prints in Precision Astrophotography, a set of 10 (llx 14 inch) photographs by Kim Zussman. The collection, together with two others in colour (The Finest Galaxies and Deep-sky Photography), is published by Kalmbach, 21027 Crossroads Circle, ...
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  • 44
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    Notes: [Auszug] We present biochemical and genetic data to support the hypothesis that the Escherichia coli met repressor, MetJ, binds to synthetic and natural operator sequences in tandem arrays such that repression depends not only on the affinity of the DNA–protein interaction, but also on protein-protein ...
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  • 45
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    Nature 341 (1989), S. 728-731 
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    Notes: [Auszug] Three of the SST analyses we use here were produced at the Climate Analysis Center (CAC) of the US National Meteorological Center, and comprise an in situ, a satellite and a blended analysis. The in situ SST analysis uses radio-transmitted data from ships and buoys. The satellite analysis uses the ...
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    Notes: [Auszug] In addition to the conventional isotope separation methods including chemical exchange, distillation and ion-exchange chromatography, laser-based methods have been intensively studied recently. With the exception of ion-exchange chromatography1'6, these methods require special equipment for the ...
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    Notes: [Auszug] A push-pull cannula was used to perfuse the dentate gyrus in anaesthetized rats, while recording extracellular synaptic potentials evoked by test stimuli delivered to the perforant path. Addition of arachidonic acid (200 jxM) to the artificial cerebro-spinal fluid for 35 min usually caused a slight ...
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    Nature 341 (1989), S. 752-754 
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    Notes: [Auszug] Because Fc receptors are structurally and functionally related, the differences in their structural complexity are surprising: TABLE 2 Expression of FcyRII on the surface of transfected COS-7 cells Binding of labelled FACS ...
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    Nature 341 (1989), S. 766-766 
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    Notes: [Auszug] Nature 328, 157-160 (1987). IN a previous issue of Nature, we reported that the anaesthetic effect of halothane correlated with the occupancy of a saturable chemical environment in rat brain1. We have extended these observations by examining the equilibration of halothane between cerebral ...
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    Notes: [Auszug] The in vitro construction of defined DNA junctions11'15'17 has been essential to the understanding of the structure of the four-way junction. The structure introduces a sharp bend in the DNA11. Using a technique related to that of Cooper and Hagerman12, we studied the configuration of a series of ...
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    Nature 341 (1989), S. 554-554 
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    Notes: [Auszug] ALTHOUGH it is high time that an influential body such as the National Research Council (NRC) complained that the US Department of Agriculture (USD A) should spend its research funds more intelligently (see page 561), it should not be surprised if its arguments fail to be reflected in the shape of ...
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    Nature 341 (1989), S. 556-556 
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    Notes: [Auszug] London THIS year's Nobel prize for chemistry has been awarded jointly to Sidney Altman of Yale University and Thomas Cech of the University of Colorado, Boulder, for their independent discoveries that RNA can have catalytic activity. These discoveries may have profound implications for our ...
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    Nature 341 (1989), S. 558-558 
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    Notes: [Auszug] Athens THE Soviet Ail-Union of Psychiatrists and Narcologists (AUSPN) is preparing a special session on Freudian theory, and has already begun publishing Freud's collected works, Soviet psychiatrists told a press conference at the World Psychiatric Conference this week. Speaking on "Psychiatry ...
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    Nature 341 (1989), S. 559-559 
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    Notes: [Auszug] Munich As part of its commitment to the European microelectronics initiative known as JESSI (Joint European Submicron Silicon), West Germany announced on 28 September the foundation of a new institute for silicon technology. The institute will concentrate on the development of smaller memory ...
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    Nature 341 (1989), S. 561-561 
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    Notes: [Auszug] Moscow TENS of thousands of people carried banners through the streets of Minsk, the capital city of Byelorussia, on 30 September to protest against delays and misinformation over the clean-up of contamination from the Chernobyl nuclear reactor explosion of April 1986. Although city ...
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    Nature 341 (1989), S. 562-562 
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    Notes: [Auszug] SIRá€"In the UK university system, activity in research is widely held to nurture good teaching, but supporting evidence is hard to come by. Teaching quality is difficult to assess directly but might be reflected in the employment record of graduates. In conjunction with the ...
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    Nature 341 (1989), S. 566-567 
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    Notes: [Auszug] SET the difficult task of deciding the best research strategies in AIDS, participants at a recent meeting* were somewhat diverted, but not particularly cheered, by the recent US decision in favour of giving AZT, still the only licensed drug against HIV (human immunodeficiency virus), to those who ...
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    Nature 341 (1989), S. 569-571 
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    Notes: [Auszug] HUMAN mitochondrial DNA (mtDNA) is remarkable both for its small size and for the immaculate economy of organization of the genes encoded by it1. Regarded by some as merely a relic of the event that brought a symbiotic bacterium into an ancestor of the eukaryotic cell, by others as a molecular ...
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    Nature 341 (1989), S. 575-575 
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    Notes: [Auszug] SIRá€"Kucik et al.1 state that "no forward transport of particles has previously been reported" on locomoting cells and, again, that "only rearward transport of surface particles had been observed". This is not the case. As detailed in my recent review2 of the entire literature on ...
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    Nature 341 (1989), S. 576-576 
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    Notes: [Auszug] SIRá€"Although the precise mechanism of the eclipses in the binary system containing pulsar PSR 1957+20 is still unclear1"5, it is generally agreed1" that the ~ 0.02M0 companion1 in circular orbit (e 〈 0.0002) (ref. 2) is losing mass. Measurement of the mass-loss rate of this ...
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    Nature 341 (1989), S. 579-579 
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    Notes: [Auszug] BORING stuff, stratigraphy á€" that seems to be a commonly held opinion in many quarters. To judge from the programme of the Twenty-eighth International Geological Congress in Washington last July, however, it is alive, well, and indeed so robust as to command an appreciable amount ...
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    Nature 341 (1989), S. 581-585 
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    Notes: [Auszug] No spacecraft were sent to Mars for 13 years after the Viking 1 mission. This 'moratorium' was broken in 1988 by the launch of two Soviet spacecraft, Phobos 1 and Phobos 2. The main destination of the mission was not Mars, but Phobos, one of its two moons. This reflected the growing interest in the ...
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    Notes: [Auszug] Multispeetral scanning is the best technique for the physical interpretation of the data obtained, providing the simultaneous FIG. 1 Scanning geometry In the session of 11 February 1989. a, Position of the spacecraft in scanning session, b, The areographic coordinates of the scanned area. ...
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    Notes: [Auszug] Phobos 2 carried two triaxial flux-gate magnetometers: the experiment MAGMA (magnetic fields near Mars) and the FIG. 1 Main boundaries and events observed by the FGMM and MAGMA experiments during the first three low-altitude elliptical orbits (El, E2 and E3) and during circular orbits (outer ...
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    Notes: [Auszug] FIG. 1 In the circular orbits around Mars (-6,900 km) in March 1989 the particle fluxes observed by SLED were enhanced because of solar and interplanetary activity. Arrows (bottom) indicate significant depressions in flux resulting from the shadowing by the body of the planet. The ...
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    Nature 341 (1989), S. 635-637 
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    Notes: [Auszug] Halothane, enflurane and isoflurane are popular potent inha-lation anaesthetics4. Almost all of the administered doses will end up in the atmosphere5, but only those species with a tropos-pheric lifetime of more than about two years will reach the stratosphere in significant quantities. The ...
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    Nature 341 (1989), S. 643-646 
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    Notes: [Auszug] There are three main problems in quantifying the ganglion cell density gradient of a primate retina. First, the population of displaced amacrine cells has to be estimated. In all mammalian retinae it is difficult to distinguish displaced amacrine cells from ganglion cells15'16. Second, in the ...
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    Notes: [Auszug] To identify RARs that could participate in amphibian limb regeneration, we screened an amplified newt-forelimb blastema Xgtll cDNA library with a human RARa probe11 under low-stringency hybridization conditions. Fifty plaques out of a population of 1.2 x 106 gave positive signals and five of these ...
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    Nature 341 (1989), S. 666-668 
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    Notes: [Auszug] The addition of toxin to a culture of sensitive 5. cerevisiae cells leads to a cessation of cell division within 1-2 generations, as indicated by the complete block in accumulation of cells after treatment with toxin (Fig. la). In treated cultures, we saw no further increase in cell numbers for ...
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    Nature 341 (1989), S. 473-473 
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    Notes: [Auszug] Paris Groupe Limagrain's legal adviser said last week that a literature search had been carried out before the agreement with CSIRO was signed, but added that he was in the process of studying the dossier on gene shears. He would not say whether Groupe Limagrain had decided to go ahead with the ...
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    Nature 341 (1989), S. 473-473 
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    Notes: [Auszug] London A SIGNIFICANT loss of snow and ice near the British Antarctic Survey (BAS) base at Rothera has been recorded, according to a Natural Environment Research Council (NERC) report, but whether the inferred temperature rise is symptomatic of greenhouse wanning or the result of a natural climate ...
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    Nature 341 (1989), S. 474-474 
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    Notes: [Auszug] Bangalore To the disappointment of Indian environmentalists, the World Bank has not only agreed to provide around 10 per cent of the estimated cost of the gigantic Nar-mada Sagar-Sardar Sarovar dam project but has also expressed its satisfaction over the plans drawn up to resettle the people ...
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    Nature 341 (1989), S. 476-476 
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    Notes: [Auszug] Washington WITH both sides professing to have the best interests of the US nuclear fusion research programme at heart, the fusion physics community and the Office of Energy Research at the Department of Energy (DoE) are displaying a remarkable capacity to derive opposite conclusions from the ...
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    Nature 341 (1989), S. 478-478 
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    Notes: [Auszug] San Francisco MONO Lake, in northern California, is a unique ecological site, with hundreds of migratory bird species attracted to the algae and brine shrimp that thrive in its alkaline waters, and a tourist attraction too, drawing hundreds of thousands of visitors every year to see the ...
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    Nature 341 (1989), S. 480-480 
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    Notes: [Auszug] SIRá€"I would like to respond to your article on the structural problems of the Max Planck Society (MPS) (Nature 340; 335;1989). The MPS does not consist only of directors and slaves; there is also a sizeable number of middle-rank employees (equivalent to tenured associate ...
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    Nature 341 (1989), S. 480-480 
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    Notes: [Auszug] SIRá€"Only 130 out of 1,302 doctorates granted in physics in the United States in 1988 went to women (Nature 340, 417; 1989). In the same issue, you wrote "By now, of course, every schoolboy knows that the quintessential point in space-time is the occasion of the Big Bang ..." ...
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    Nature 341 (1989), S. 481-481 
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    Notes: [Auszug] Listvianka (on Lake Baikal) How do you set about founding an international research centre the like of which has not been seen before? That is the question with which a group of Soviet and overseas limnologists wrestled last week. They got as far as signing a declaration of intent, but the hard ...
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    Nature 341 (1989), S. 485-486 
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    Notes: [Auszug] BASAL bodies and their alter ego the centriole are amongst the most enigmatic cell organelles1. They seed the growth of flagella and cilia, they have a complex pin-wheel structure (see figure), they can undergo Jeckyll and Hyde-like inter-conversion at specific points in the cell cycle and, most ...
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    Nature 341 (1989), S. 489-490 
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    Notes: [Auszug] OUR understanding of the initial moments of a supernova was convincingly confirmed by the events following SN1987A: the exhausted core of a main-sequence star collapses under its own weight and emits a massive pulse of neutrinos. Several hours later the explosion of a highly evolved, 12-solar-mass ...
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    Nature 341 (1989), S. 490-490 
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    Notes: [Auszug] MICROWAVE heating is bringing about a small revolution in chemistry. All sorts of reactions go much faster in a microwave oven than over a traditional burner, and it is hard to believe that the effect is merely thermal. Daedalus points out that many molecules, and most reaction intermediates, have ...
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    Nature 341 (1989), S. 494-495 
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    Notes: [Auszug] IN 1968 Peter Bretscher and Melvin Cohn, one of the masters of modern immunology, formulated the associative-recognition or two-signal theory for self-non-self discrimination: a lymphocyte requires two signals in order to undergo productive activation, whereas a single signal results in the clonal ...
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    Nature 341 (1989), S. 497-503 
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    Notes: [Auszug] Many species are divided into a mosaic of genetically distinct populations, separated by narrow zones of hybridization. Studies of hybrid zones allow us to quantify the genetic differences responsible for speciation, to measure the diffusion of genes between diverging taxa, and to understand the ...
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    Nature 341 (1989), S. 526-527 
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    Notes: [Auszug] We have sampled abyssal spinel peridotites (n = 33) from fracture zones along the Central Indian, America-Antarctica, South-west Indian and Mid-Atlantic Ridge systems as well as the Cayman Trough. Although variably affected by hydrother-mal alteration, all of our samples contained fresh spinel (sp) ...
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    Nature 341 (1989), S. 536-539 
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    Notes: [Auszug] Excised membrane patches that contain ion channels gated by nicotinic cholinergic agonists have been used to sense the release of acetylcholine from growth cones of developing neurons4'5. We used EAA-sensitive membrane patches to test whether there is a detectable release of a glutamate-receptor ...
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    Notes: [Auszug] We have analysed the interactions with antigen of individual domains of the anti-lysozyme antibody, D1.3 (ref. 1). The VH domain was expressed in E. coli and secreted into the peri-plasm6'7, alone or in association with the VK domain (fig. 1). Analysis of culture medium, by passage through a ...
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    Notes: [Auszug] Protease nexins are protein protease inhibitors that are synthesized and secreted by various cultured extravascular cells. They form SDS-resistant complexes with certain serine proteases; the complexes then bind back to the cells and are rapidly internalized and degraded U3'13'14. Protease nexin-I ...
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    Nature 341 (1989), S. 372-372 
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    Notes: [Auszug] EVERYBODY knows that the most cherished symbols of national sovereignty are a national airline and a television broadcasting network. In the 1960s, when independent governments were being created every few months, sub-sidized airlines and television stations were springing into being at a similar ...
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    Notes: [Auszug] THE plan to sell Britain's electricity industry to private investors was never likely to be smoothly carried through, but the British government's decision last week that its timetable must be postponed by up to six months is a substantial setback, however much ministers may make light of it. There ...
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    Nature 341 (1989), S. 374-374 
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    Notes: [Auszug] ALMOST four years after it was first pro-posed, the Mount Sinai School of Medicine in New York has begun a comprehensive, nationwide study intended to provide answers to long-standing questions about the reproductive risk to women office-workers of constant exposure to video display terminals ...
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    Nature 341 (1989), S. 376-376 
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    Notes: [Auszug] Paris THE Squibb Corporation, the US pharma-ceutical company, is to spend more than FF280 million ($43 million) on a basic research initiative in molecular biology at the Universite Louis Pasteur in Strasbourg, on the Franco-German border. The deal includes construction of a FF154-million ...
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    Nature 341 (1989), S. 378-378 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Vienna SPEAKING candidly at the 33rd general conference of the International Atomic Energy Agency (IAEA) last week in Vienna, Soviet representatives admitted that the Soviet Union faces serious prob-lems in the continued expansion of its nuclear programme. But, while also announcing a strong ...
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    Nature 341 (1989), S. 379-379 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Several errors crept into the article "Basic research comes alive in Japan" (Nature 340, 339; 1989). The KEK laboratory is in Tsukuba; the Ministry of Education, Science and Culture is Monbusho; the new Institute of Advanced Study is being launched by Kyoto and Osaka; and Riken is more ...
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  • 93
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    Nature 341 (1989), S. 380-380 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Your recent suggestion (Nature 341, 89; 1989) that every member state of the European Communities should have two currencies, its own and the ECU, makes good sense, but it needs one important amendment. Governments for centuries have understood the need to associate bold images with their ...
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  • 94
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    Nature 341 (1989), S. 384-385 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] NORMAL Ras proteins encoded by the ros genes and oncogenic Ras proteins en-coded by mutated ros genes (oncogenes) are synthesized as a precursor in the cell cytoplasm and then modified and trans-located to the cytoplasmic face of the cell's outer membrane1. Localization to the membrane is critical ...
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    Nature 341 (1989), S. 386-387 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] HALDANE'S best-remembered remark, that God has 'an inordinate fondness for beetles', was elicited by Jowett's question, at high table at Balliol, as to what his studies had revealed about the deity. Not only are there more named species of beetles than of any other order of organ-isms (somewhere ...
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    Nature 341 (1989), S. 391-391 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-It has recently been announced12 that the German Science Foundation (DFG) project to drill a bore-hole (KTB) 14-km deep to investigate the deep struc-ture of the Earth's crust has had to modify its objectives, because the unexpectedly high temperatures encountered (about 110 á°C at ...
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    Nature 339 (1989), S. 267-268 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] BESTIARIES are wonderful things. Some are books for children, filled with pictures of improbable monsters, dinosaurs and the like, that crouch under beds or live grouchily in trash cans. But just occasionally the creatures escape: imagined amusement becomes belief and the result is a tearful and ...
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    Nature 339 (1989), S. 265-265 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Forests are more than trees. In their Commentary article on the status of European forests, Blank et al.' based their account on the results of national surveys of the health of tree crowns. Their discussion of forest decline is mainly from a population perspective, which does not give due ...
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    Nature 339 (1989), S. 265-266 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] BLANK ET AL. REPLY-Although Hauhs and Ulrich say they provide a different view of forest decline to that which we presented in our Commentary article, we note that there are now many areas of agreement. There have been considerable changes from the earlier arguments put forward by Ulrich and ...
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  • 100
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    [s.l.] : Nature Publishing Group
    Nature 339 (1989), S. 266-266 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-We have recently reported12 evidence that the cause of the disease in Lake Baikal seals (Phoca sibericd) in the autumn of 1987 was infection by a morbillivirus similar to canine distemper virus (CDV). The same, or a very similar, virus attacked European seals the following spring3"7. By means ...
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