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  • Articles  (17,787)
  • Nature Publishing Group  (17,787)
  • 1990-1994  (17,787)
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  • 1
    Electronic Resource
    Electronic Resource
    Prospects for graduates (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 292-292 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - I am a recent PhD graduate, and Nature's manifesto for British science (Nature 353, 105; 1991) does not relieve my fears about the long-term prospects in science and technology and the likelihood of permanent employment in Britain for myself and my peers. Young people are ...
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    URL: http://dx.doi.org/10.1038/355292a0
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  • 2
    Electronic Resource
    Electronic Resource
    Siberia's threatened forests (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 293-294 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE forests of Siberia cover 2.3 million square miles, an area the size of the continental United States1. They repre-sent 57 per cent of the world's coniferous forest volume and 25 per cent of the world's total inventoried wood volume2. In comparison, the Amazon rainforests of ...
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  • 3
    Electronic Resource
    Electronic Resource
    Molecular computer memory (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 297-298 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A SPECTROSCOPIC technique described in Nature early last year1 for detecting individual molecules trapped in a matrix, and using them as probes of the matrix's structure, is transformed on page 335 of this issue2 into a scheme for making molecular-scale memory devices. Such ...
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    URL: http://dx.doi.org/10.1038/355297a0
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  • 4
    Electronic Resource
    Electronic Resource
    Functional contacts of a transfer RNA synthetase with 2′-hydroxyl groups in the RNA minor groove (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 513-515 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Single deoxyribonucleotide substitutions were incorporated into the 3' and 5' strands of the tRNAAla duplex at the eleven positions shown in Fig. 1 (left). The ability of alanine-tRNA synthetase to aminoacylate each of the eleven variants was compared to aminoacylation of a wild-type ...
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    URL: http://dx.doi.org/10.1038/357513a0
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  • 5
    Electronic Resource
    Electronic Resource
    DNA product pipeline (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 520-522 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] GENE CODES announces the first release of Sequencher, a package of software tools for DNA sequencing using the Apple Macintosh (Reader Service No. 101). The fast alignment algorithm in Sequencher detects overlapping ends in sequencing fragments and assembles them into a consensus sequence, ...
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    URL: http://dx.doi.org/10.1038/357520a0
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  • 6
    Electronic Resource
    Electronic Resource
    Germans try to ease overcrowding (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 349-349 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Munich. German university students in science and mathematics are facing crowded classrooms and waiting lists for popular courses as they cope with a system creaking under the strain of rising enrolments. The problem stems from a policy that gives any student who passes the high ...
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    URL: http://dx.doi.org/10.1038/357349b0
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  • 7
    Electronic Resource
    Electronic Resource
    Sandia looks for a company that will put research before profits (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 349-349 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Washington. "Wanted: Manager for a US Department of Energy (DOE) national laboratory with dwindling Cold-War-related mission. Must be willing to restore tarnished image if chemical/radioactive waste problems are discovered. Compensation possible, but sense of patriotic duty ...
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  • 8
    Electronic Resource
    Electronic Resource
    Italian space scientists win round in funding (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 351-351 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Munich. The Italian government last week came down on the side of space scientists in their battle to recover millions of dollars now going to commercial space projects. Antonio Roberti, Italian research minister, has told the Italian Space Agency (ASI) that it must adhere to a ...
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  • 9
    Electronic Resource
    Electronic Resource
    Genetically engineered foods get green light (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 352-352 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Washington. Last week the US Food and Drug Administration (PDA) embraced the principle that the government should regulate the products of genetic engineering, not the process by which they are created. Its proposed guidelines for the regulation of new varieties of foods, which ...
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  • 10
    Electronic Resource
    Electronic Resource
    Is peer review unbiased? (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 354-354 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Sir - The thrust of your leading article "Conflict of interest revisited" (Nature 355, 751; 1992) is based on the false premise that academic researchers not associated with the business world are unbiased expert participants in peer review panels of national agencies. Bias is a ...
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  • 11
    Electronic Resource
    Electronic Resource
    FBI's case for genetics (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 355-355 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Your article "FBI gives in on genetics" (Nature 355, 663, 1992) is incorrect in its representation of the purpose of our recent collection of population frequency data from several European forensic laboratories. Since the inception of the Federal Bureau of Investigation's DNA ...
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  • 12
    Electronic Resource
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    Not by numbers (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 355-355 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - It was a nice coincidence that Lord Kelvin's old chestnut "when you cannot express it in numbers, your knowledge is of a meagre and unsatisfactory kind" should appear on your Correspondence page (Nature 356, 653; 1992) next to a letter by Stephen Jay Gould (albeit on a ...
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  • 13
    Electronic Resource
    Electronic Resource
    Russian summer hopes dwarf doubts (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 357-357 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Moscow. The difference between summer and winter here is not just the external temperature, but people's frame of mind. Especially towards the end of the long winter, spirits are at nadir. The return of a little natural warmth has each year liberated the natural optimism of ...
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  • 14
    Electronic Resource
    Electronic Resource
    Solar conundrums (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 29-30 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE Sun, from ancient to modern times, has been preeminent in developing man's understanding of the Universe. In the fifth century BC, Anaxagoras showed it to be a 35mile-diameter ball of fiery stone orbiting 4,000 miles overhead. In the late nineteenth century, Lord ...
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  • 15
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    Diabetes running wild (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 362-363 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] STUDIES of a diabetes epidemic on a Pacific islet, carried out by Paul Zimmet and colleagues1"6, will make grim reading for public health professionals, geneticists and students of human evolution. Among older adults, the prevalence of diabetes on Nauru Island is over 60%, a ...
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  • 16
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    Proteins as machines (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 17-18 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THIRTEEN different types of protein machine, the driving units that produce macromolecular movement in living organisms, came under scrutiny at the sixth molecular biology symposium at Indiana University late last year*. The upshot is a clearer view of the factors that limit our ...
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  • 17
    Electronic Resource
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    Cereal success (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 364-364 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] FOR all its enormous economic importance, wheat has proved a tough subject for the genetic engineer. But the door to the manipulation of its genome springs ajar with a report by V. Vasil et at. (Bio/Technology 10, 667-674; 1992) of the production of fertile transgenic plants. The gene involved ...
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  • 18
    Electronic Resource
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    Plastic nightmare (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 366-366 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE modern craze for recycling Is driven more by the middle-class desire to feel virtuous than by any economic logic. Plastics pose the hardest problem, because the most earnest recycler cannot distinguish one plastic from another. Only homogeneous polymers can be reprocessed at ...
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  • 19
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    Misrepresenting paradise (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 368-369 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - I am the unidentified 'geologist' accused of despoiling parts of Ellesmere Island with "the largest collection of garbage" that Dr France encountered on a ski-traverse1. France quotes one of my papers concerning conservation of the high Arctic and implies that my ...
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  • 20
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    Alpha-particles and leukaemia (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 370-370 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - The results of Kadhim et a/.1 on the incidence of nonclonal chromosomal aberrations in stem cells of the bone marrow subject to two or less ^-particle passages on the average, but not in cells exposed to y-rays, and the interpretation of radiation-induced chromosomal ...
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  • 21
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    Ground rules (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 373-374 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] "WHERE there is no vision, the people perish"; or, as a marginal note in the better bibles puts it, "will become unruly". Many recent events justify the suggested variant, but the first is more relevant in the present context. That biblical exegisis comes naturally because ...
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  • 22
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    Will women soon outrun men? (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 25-25 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - The mean running velocity (V) is a crucial determinant of the metabolic demands imposed by competitive running events1,2. Its historical progression, therefore, is likely to be important in understanding the physiological determinants of the seemingly inexorable progression of ...
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  • 23
    Electronic Resource
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    How predictable is chaos? (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 26-26 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SUGIHARA AND MAY REPLY - One problem in trying to reconstruct the attractor that may underlie an apparently chaotic time-series is that we often have data for only one variable in what is, intrinsically, a multivariate system. Following Takens (F. Takens, Lect. Notes Math. 898, ...
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  • 24
    Electronic Resource
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    Anion guests in heteropolyanions? (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 27-27 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Miiller1 and Day et al.2, stimulated by Mitchell's News and Views article on inorganic host-guest chemistry3, cited heteropolyanions as examples in which both anions and cations could be guests (or 'hostages'). I can claim some familiarity4 with this remarkably versatile ...
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  • 25
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    Strontium isotopes at K/T boundary (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 28-28 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Nelson et al.1 attempt to bring needed objectivity to an examination of the evolution of marine87Sr/86Sr near the Cretaceous/Tertiary (K/T) boundary. In our view, the complexity of their section, together with conflicts within their own biostratigraphy, invalidate their ...
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  • 26
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    No lubricants from fluorinated C 60 (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 27-28 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Ever since C60 was discovered1, there has been anticipation of the possible use of the fluorinated derivatives, and C60F60 in particular, as lubricants. There are indications, however, that, unlike Teflon, this material might not be chemically stable: fluorination of C60 is ...
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  • 27
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    Plumbing the depths (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 32-32 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] When the custodians of marine nomenclature came snooping round, they were told that the vessel's name was a corruption of that of its conceptual father. In fact, it was named after a cartoon chipmunk popular in the 1950s. But there the joke ended. The deep-diving submarine Alvin ...
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  • 28
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    Postsynaptic contribution to long-term potentiation revealed by the analysis of miniature synaptic currents (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 50-55 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Miniature excitatory synaptic currents were recorded from CA1 pyramidal cells in hippocampal slices to study the site of the persistent change in synaptic efficacy during long-term potentiation. Induction of long-term potentiation produced a large increase in the amplitude of these currents. Such a ...
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  • 29
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    Dynamical development of a ring-like structure in the supernova 1987A nebula (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 58-61 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Circumstellar material of size ~2" around SN1987A was first detected spectroscopically by the International Ultraviolet Explorer5, and then in the optical6. Imaging showed a nebula elongated in the east-west direction, which was then interpreted as light echoes from an inclined ...
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  • 30
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    Surface catalysis studied by in situ positron emission (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 63-66 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Positron-emission computerized tomography (PET) is an imaging technique originating from nuclear medicine1'2, where it is mainly applied as an in vivo, noninvasive medical research tool for the investigation of brain and heart diseases. PET has been applied industrially3'4 by labelling the ...
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  • 31
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    Formation and resolution of recombination intermediates by E. coli RecA and RuvC proteins (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 506-510 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The recombination of DNA molecules has been reconstituted in vitrousing two purified enzymes from Escherichia coli. RecA protein catalyses homologous pairing and strand exchange reactions to form intermediate DNA structures that are acted upon by RuvC. The newly identified RuvC protein resolves ...
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  • 32
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    Canada's medical council wants larger role (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 271-271 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Quebec. Next month, the Medical Research Council (MRC) of Canada is expected to endorse a long-term plan for a revolutionary change of role. From being a conservative, reactive fund-granting body little known outside biomedical research circles, it intends to become what its ...
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  • 33
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    Changes in frequency–size relationship from small to large earthquakes (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 71-73 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The observed rate of earthquakes (n) with seismic moment ^M0 or energy ^E follows a power-law distribution: n(M0) = «MoB. This observation was first made by Gutenberg and Richter3 who expressed it in terms of earthquake magnitude, M, as Iog10 [/i(M)J = A — bM. The ...
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  • 34
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    Engagement of the high-affinity IgE receptor activates src protein-related tyrosine kinases (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 78-80 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] RBL-2H3 cells were activated by two independent methods to evaluate signal transduction through FceRI. RBL-2H3 cells were activated by antigen presentation (IgE + DNP) by first sensitizing the cells with anti-2,4-dinitrophenol (DNP) mouse monoclonal IgE and then stimulating with antigen. ...
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    Mapping of the protein import machinery in the mitochondrial outer membrane by crosslinking of translocation intermediates (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 84-87 
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    Notes: [Auszug] The precursor of the ADP/ATP carrier, the most abundant protein of the mitochondrial inner membrane, was synthesized in rabbit reticulocyte lysate in the presence of 35S-methioninen. To accumulate the precursor at the mitochondrial outer membrane (receptor stage and GIP stage), isolated ...
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    Allosteric underwinding of DNA is a critical step in positive control of transcription by Hg-MerR (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 87-89 
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    Notes: [Auszug] The mer operator is located directly between the -10 and -35 hexameric RNA polymerase-binding elements of the PT promoter. In both the represser and activator states, MerR binds to a site centred 26 base pairs (bp) upstream from the transcription start site and in the region ...
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    Poor rich Japan (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 420-420 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] POOR rich Japan! For the past several months, a succession of visitors from the United States have been in Tokyo pleading for what in other contexts is called technical assistance (and which may often consist of mere money) with the construction of the Superconducting Super Collider ...
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    Dounreay loses uranium (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 422-422 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] London ONE of the two nuclear waste reprocessing facilities at the UK Atomic Energy Authority (AEA)'s plant in Dounreay, Scotland, has been shut down after plant managers found that they cannot account for some 10 kg of enriched uranium. The discrepancy may be simply due to an error ...
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    Logjam ahead for UK academics (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 422-422 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] London THE average Mexican academic has better access to supercomputers than his counterpart in Britain, according to a new report from the Parliamentary Office of Science and Technology (POST), the fledgling British answer to the US Congress's Office of Technology Assessment. ...
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    Homing of a DNA endonuclease gene by meiotic gene conversion in Saccharomyces cerevisiae (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 301-306 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] An unusual protein splicing reaction joins the N-terminal segment (A) and the C-terminal segment (C) of the 119K primary translation product (ABC) of the yeast VMA1 gene to yield a 69K vacuolar H+-ATPase subunit (AC) and an internal 50K polypeptide (B). This 50K protein is a ...
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    Poles together (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 425-425 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] London FRANCE'S polar research programme will next year be brought under one roof, with the opening of a new institute in Paris to coordinate the work of all French polar researchers. For Claude Lorius of the Centre National de la Recherche Scientifique (CNRS)'s Laboratory of ...
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    3,000 lecturers wanted (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 425-425 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Hong Kong A DESPERATE shortage of college and university lecturers in Hong Kong has led seven government-funded tertiary institutions to combine forces in a search for academic staff overseas. The shortage stems from planned expansion of the territory's tertiary education system, ...
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    Complementary Ti and Zr anomalies in orthopyroxene and clinopyroxene from mantle peridotites (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 518-520 
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    Notes: [Auszug] Depletion of high-field-strength elements (HFSE) is widespread in mantle clinopyroxenes1'3. The layer of HFSE-depleted mantle inferred from this depletion has been considered to be a geochemical feature with important petrologic implications. Salters and Hart4 have re-emphasized the ubiquity of ...
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    Mouse Small eye results from mutations in a paired-like homeobox-containing gene (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 522-525 
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    Notes: [Auszug] Several Sey alleles have arisen independently, all of which are semidominant13'14. The phenotype found in mutant Sey mice is typified by the 15-day post coitum (p.c.) embryos in Fig. 1. The obvious defect in the heterozygous Sey/+ embryos (Fig. \b) is that the eyes are smaller than wild type ...
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    In the beginning ... (1991)
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    Nature 354 (1991), S. 432-433 
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    Notes: [Auszug] ADDED momentum to the molecular assault on the underlying cause of Alzheimer's disease will stem from the paper by Kawabata et al. that appears on page 476 of this issue1. The authors describe the most useful animal model yet for the disease - a mouse expressing a 100-residue ...
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    A cytoplasmic chaperonin? (1991)
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    Nature 354 (1991), S. 434-435 
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    Notes: [Auszug] SEQUENCE similarities often spring surprises. A particularly striking example is the discovery, reported at a recent European Research conference Biology of Molecular Chaperones, University of Kent, Canterbury, 28 September-3 October 1991., and in part on page 490 of this ...
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    Growing with environmental care (1992)
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    Nature 357 (1992), S. 177-177 
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    Notes: [Auszug] THE World Bank's conversion to the cause of sustainable development appears to be complete, to judge from its World Development Report 1992, the fifteenth in an annual series, issued earlier this week. Lewis T. Preston, the bank's president, says the main need now is "to integrate environmental ...
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    Signal recognition revisited (1991)
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    Nature 354 (1991), S. 437-438 
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    Notes: [Auszug] DISCONCERTING but true - deletion of the budding-yeast homologue of a gene encoding a protein involved in some seemingly crucial cellular process does not necessarily result in the death of the yeast cell. A further surprising example of this phenomenon is described by Hann and ...
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    Off the shelf (1991)
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    Nature 354 (1991), S. 437-437 
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    Notes: [Auszug] MAKING monoclonal antibodies without the use of animals is a practical reality, report J. D. Marks era/. (J. molec. Biol. 222, 581-597; 1991). They show how antigen-specific antibody fragments can be selected from a library of recombinant immunoglobulin genes, which were cloned from ...
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    G whizz (1991)
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    Nature 354 (1991), S. 437-437 
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    Notes: [Auszug] RESULTS from the deep northeast Pacific pour cold water on the notion that there is a mysterious 'fifth force' (M. A. Zumberge eta/. Phys. Rev. Lett. 67, 3051-3054; 1991). Discrepancies in gravity measurements from a mineshaft, and others revealed in Eotvos's legendary laboratory ...
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    Original gravity (1991)
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    Nature 354 (1991), S. 438-438 
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    Notes: [Auszug] MOTION sickness makes no biological sense. What possible evolutionary advantage can primitive man have gained from the disabling nausea and vomiting brought on by violent movement? Daedalus comments that motion sickness is a product of sensory conflict. It arises when our eyes and ...
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    AIDS response (1991)
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    Nature 354 (1991), S. 439-439 
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    Notes: [Auszug] SIR - Maddox1 and Anderson2, discussing the results of Stott et al.3A appear to differ on the key issue of whether or not the xenoreactive monkey sera bound SIV-encoded proteins (although Stott et al.4 reported no such reactivity was detected with purified envelope proteins). But ...
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    AIDS response (1991)
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    Nature 354 (1991), S. 440-440 
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    Notes: [Auszug] SIR - Maddox's otherwise helpful article1 began and ended unfortunately. I fear that the structure of its assessment of Hoffmann's and Stott's work is going to yield all sorts of bizarre press reports, leading to confusion among the general public. As I understand it, Duesberg ...
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    Tiger project halted (1991)
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    Nature 354 (1991), S. 424-424 
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    Notes: [Auszug] New Delhi CONTROVERSY in India over the death of five tigers in a sanctuary in Karnataka State has led to closure of an Indian-US research project on tigers. Last week, state environment minister B. Basavalingappa ordered the confiscation of cameras and equipment used in the project ...
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    US plans Frontiers support (1991)
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    Nature 354 (1991), S. 424-424 
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    Notes: [Auszug] Tokyo FOUR major US government agencies are planning to contribute several million dollars a year to Japan's Human Frontiers Science Programme, which supports international research on the brain and molecular biology, two senior officials from the US Department of Energy (DOE) said ...
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    Medium-range structural order in covalent amorphous solids (1991)
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    Nature 354 (1991), S. 445-452 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Despite their lack of long-range translational and orientational order, covalent amorphous solids can exhibit structural order over both short and medium length scales, the latter reaching to 20 Å or so. Medium-range order is difficult to measure experimentally and to interpret ...
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    Human immunodeficiency virus genetic variation that can escape cytotoxic T cell recognition (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 453-459 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In a longitudinal study of HIV seropositive patients, there were fluctuations in the specificity of cytotoxic T cells for the virus. This was matched by variability in proviral gag DNA epitope sequences in the lymphocytes of these patients. Some of these viral variants are not ...
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    Tracing the conversion of aurichalcite to a copper catalyst by combined X-ray absorption and diffraction (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 465-468 
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    Notes: [Auszug] By using a fixed arrangement (see Fig. 1) in which an energy- t To whom correspondence should be addressed. dispersed geometry developed for dynamic X-ray absorption studies5"7 has been augmented with a curved, position-sensitive detector, we have recorded low-resolution X-ray ...
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    Organic matter and containment of uranium and fissiogenic isotopes at the Oklo natural reactors (1991)
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    Nature 354 (1991), S. 472-475 
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    Notes: [Auszug] Small pockets of uranium ore at Oklo went critical 1,95F0± 30 Myr ago6, producing several natural fission reactors. Reactors 1-6 contain virtually no organic matter. Total energy production in these reactors was 16,500 MWyr. Roughly 6 tons of 235U fissioned; the total uranium ...
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    Dwarf galaxies' vanishing act (1991)
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    Nature 354 (1991), S. 430-431 
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    Notes: [Auszug] ASTRONOMERS try to learn how galaxies have evolved over time by observing objects at great distances from us, which we see as they were when the Universe was younger. Over the past decade, improved observational techniques have allowed the investigation of ever more distant samples ...
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    Icy clues to Triton's origins (1991)
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    Nature 354 (1991), S. 431-431 
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    Notes: [Auszug] FROZEN carbon monoxide and dioxide have been discovered on Triton, Nep tune's largest moon, D. P. Cruickshank (NASA Ames) and colleagues reported at a meeting last month on planetary sciences Division for Planetary Sciences of the American Astronomical Society, Palo Alto, 4-8 ...
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    Homology of a candidate spermatogenic gene from the mouse Y chromosome to the ubiquitin-activating enzyme El (1991)
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    Nature 354 (1991), S. 483-486 
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    Notes: [Auszug] FIG. 1 The isolation of ASxrb DNA and the identification of exonic sequences on the Y chromosome, a, The ASxrb DNA is represented by the thick black line and the Sxr DNA remaining in the Sxrto region by the broken line. The breakpoints of the deletion are shown by the gaps in the Zfy ...
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    A molecular chaperone from a thermophilic archaebacterium is related to the eukaryotic protein t-complex polypeptide-1 (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 490-493 
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    Notes: [Auszug] TF55 was purified from the soluble portion of Triton X-100 cell extracts by anion exchange chromatography and glycerol gradient sedimentation. Most of the TF55 sedimented in the gradient at 20S (Fig. la). No nucleic acid was found by spectro-photometry in the 20S fraction, suggesting that ...
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    Can Soviet science be rescued? (1991)
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    Nature 354 (1991), S. 339-340 
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    Notes: [Auszug] ONE thing is sure about science now in what, for want of a better name, is still called the Soviet Union. Science is quickly coming to an end. In the past few days, several appeals for help have been circulating in the West, while the Moscow State University has made a public appeal ...
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    Baltimore resigns (1991)
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    Nature 354 (1991), S. 341-341 
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    Notes: [Auszug] DAVID Baltimore, the embattled president of Rockefeller University, announced early this week that he would resign his position at the end of the month. In a 2 December letter to the Rockefeller board of trustees, Baltimore wrote that the continuing misconduct investigation focused ...
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    New science pressure group (1991)
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    Nature 354 (1991), S. 342-342 
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    Notes: [Auszug] Tokyo IN an unusual move, a powerful pressure group has been formed within Japan's ruling Liberal Democratic Party (LDP) to push for dramatic increases in government spending on research. The pressure group, called the 'special committee to reinforce maintenance of the basic research ...
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    The future is now (again) (1991)
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    Nature 354 (1991), S. 344-345 
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    Notes: [Auszug] Denver, Colorado A DECADE after the United States ended its frantic spending on renewable energy research - a binge triggered by the oil crises of the 1970s and killed by the failure of alternative energy sources to live up to their promise - renewable energy has finally come of age. ...
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    Oil-laden (1991)
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    Nature 354 (1991), S. 441-441 
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    Notes: [Auszug] Oil-laden desert in Kuwait. Reproduced from Tides of War: Eco-disaster in the Gulf by Michael McKinnon and Peter Vine, a graphic and dramatic account of the ecological disruption ensuing from the Gulf conflict. Published by Boxtree, price is ...
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    Paths of least resistance (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 443-444 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SEMICONDUCTORS have been single-handedly responsible for the miniaturization of electronic circuits, which has reduced the cost and increased the reliability of electronic components, and, more importantly, reduced signal-propagation times. With integrated circuits, the entire ...
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    Predictable plots (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 444-444 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] CONSIDER the following propositions. The essence of science is prediction; the best way to make predictions is to regress variables one against the other; the more extravagant goals of science, for instance, that it should seek to understand what is going on, are unnecessary; ecology ...
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    Were small galaxies once the dominant cosmological population? (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 460-461 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The B-band galaxy number counts rise rapidly with magnitude at least to B ~ 26, at which point the cumulative galaxy density is ~3 x 105 per square degree (refs 1,2). Comparison with a numerical model that assumes no luminosity evolution in the galaxy population and an invariant ...
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    Vibrational spectroscopy of superconducting K 3 C 60 by inelastic neutron scattering (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 462-463 
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    Notes: [Auszug] The K3C60 sample was prepared by reaction of K^ 6C60 and C60 in a sealed evacuated pyrex tube at 250 °C for 3 days, 350 °C for 24 hours and 250 °C for 8 days12. Phase purity was confirmed by X-ray diffraction measurements and Rietveld refinement of high-resolution ...
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    Layered magnetic structure of a metal cluster ion (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 463-465 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] K6[VI1^As6O42(H2O)]. 8 H2O was prepared as described previously11. It has a crystallographically imposed trigonal symmetry11 (space group R3c, No. 167), as shown in Fig. la. The overall structure is quasispherical, with three sets of (non-equivalent) vanadium atoms, V\, V2 and V3. Vl ...
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    Hum drum (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 357-357 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WILL discotheques of the future echo to the beat of the fractal drum, described in Physical Review Letters (67, 2974-2977; 1991) by B. Sapoval and colleagues? The drum was designed to test the notion that fractal borders may influence the behaviour of waves, particularly the damping of waves. The ...
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    Eukaryotic initiation rites (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 114-115 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] INITIATION of chromosomal DNA replication, which defines the transition from the Gl to the S phase of the cell cycle, is a pivotal event in the life of a eukaryotic cell. It occurs with precise timing and is carefully coordinated with other events in the cell cycle. Moreover, S phase is normally ...
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    Tackling TB (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), 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] TUBERCULOSIS is back with a vengeance in places such as New York City, where the disease is reaching epidemic proportions. But as A. M. R. Chowdhury ef a/, point out in The Lancet (339, 1181-1182; 1992), in the developing nations it has never been away. In Bangladesh, estimates of the percentage ...
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    Under pressure (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 114-114 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] HYDROGEN is a singly valent element, as is sodium, so it stands to reason that when transformed into a solid - by pressure - it should become metallic. H. K. Mao and R. J. Hemley claimed three years ago to have achieved this remarkable state of matter. But because the pressures involved are so ...
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    Horse scents (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 114-114 
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    Notes: [Auszug] STALLIONS competing for mates judge the form of a rival male not only by listening carefully to its whinnies but by sniffing its faeces as well (D.I. Rubenstein and M.A. Hack Evol. Ecol. 6, 254-260; 1992). Whinnies indicate dominance status, from the horse's mouth, as it were, irrespective of ...
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    From science fiction to reality? (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 362-362 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - The existence of a planet in orbit around a neutron star, reported by Bailes et al.1, was actually predicted2'3 by the science-fiction writer Poul Anderson in a novel first published in 1958. Anderson also predicted that a neutron star would possess "The most powerful bloody ...
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    Not only gone with the wind (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 116-116 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE value of detailed study of apparently well-defined ecological processes is evident in new work reported in Ecology1 by S. B. Vander Wall. He shows that even among seeds (such as those of pine) regarded as wind-dispersed on the basis of their morphological structure, secondary dispersal by ...
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    Channel control (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 363-364 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Because they did not observe a fast response to (3-adrenergic stimulation in adult guinea-pig cardiac myocytes as we reported7, Hartzell et al.1 claim that the response does not exist. In our view, this is a version of the 'all swans are white' argument; the figure (over page) ...
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    Slimline magma chambers (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 117-118 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE 60,000-km-long oceanic rift system marks the site at which nearly two-thirds of the Earth's crust is produced. The volcanic carapace of that crust, and its plutonic underpinnings, are thought to develop from shallow magma reservoirs or 'magma chambers'. The shape, size and physical behaviour ...
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    Flying dust (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 118-118 
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    Notes: [Auszug] VOLCANIC avalanches can be horrifically devastating. They consist essentially of hot dust fluldized in turbulent air, and can travel at high speeds for many kilometres down slopes of less than 1°. Some pyroclastic flows (in which the dust Is fiercely hot) have even been known to travel uphill. ...
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    Large-scale superluminal motion in the quasar 3C273 (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 374-376 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The quasar 3C273 is unusual in many respects, both in its very high optical and X-ray brightness, and also in its superluminal and other radio properties. On kiloparsec scales, it is unusual in that all the radio emission comes from a core coincident with the optical quasar with a ...
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    A post-core-collapse model for the nucleus of M33 (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 376-377 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Local Group galaxies M31 and M33 contain a nucleus, that is, a small, high-density star cluster inside the core which acts as a separate dynamical component. Also, M32 contains a tiny core; although not a separate dynamical entity, it nevertheless has a central density and core ...
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    Structure and functional properties of human general transcription factor IIE (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 369-373 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The general transcription factor HE (TFIIE) is an essential component of the eukaryotic RNA poly-merase II initiation complex. We have isolated human complementary DNA clones for both the subunits of TFIIE. Using purified recombinant proteins we find that both subunits are essential ...
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    The quasiquadrennial oscillation of Jupiter's equatorial stratosphere (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 380-382 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The temperature maxima and minima of the jovian oscillation are centred on the equator, with maxima in 1980, 1984 and 1989-90, and minima in 1982-83 and 1986-87. Figure 1 shows temperature profiles for two pairs of years having opposite phases of the equatorial temperature structure. ...
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    A Met-to-Val mutation in the skeletal muscle Na + channel α-subunit in hyperkalaemic periodic paralysis (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 387-389 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Pedigree A (Fig. la) shows a small portion of the HYPP pedigree used for the original linkage analysis with the human a-subunit gene4. Total RNA was made from a muscle biopsy from patient IV-1 (pedigree A) and from individuals with unrelated neuromuscular disorders. RNA was ...
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    Formation of a nine-subunit complex by HLA class II glycoproteins and the invariant chain (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 392-394 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It was originally proposed that the afil complex had a Stokes radius identical to that of a globular protein7 of relative molecular mass 270,000 (Mr 270 K) because it contained a chondroitin sulphate-modified form of the I chain8. However, it has since been shown that only a small ...
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    Structural motifs and potential a homologies in the large subunit of human general transcription factor TFIIE (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 398-401 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Partial amino-acid sequences of human TFIIE-a was determined from five cyanogen bromide peptides (underlined regions in Fig. 1). With primers based on these sequences, polymerase chain reaction (PCR) and plaque hybrydization techniques were used to isolate partial TFIIE-a cDNA clones ...
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    ATP-dependent recognition of eukaryotic origins of DNA replication by a multiprotein complex (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 128-134 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A multiprotein complex that specifically recognizes cellular origins of DNA replication has been identified and purified from the yeast Saccharomyces cerevisiae. We observe a strong correlation between origin function and origin recognition by this activity. Interestingly, specific DNA binding by ...
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    Glutamate-induced long-term potentiation of the frequency of miniature synaptic currents in cultured hippocampal neurons (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 134-139 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Glutamate application at synapses between hippocampal neurons in culture produces long-term potentiation of the frequency of spontaneous miniature synaptic currents, together with long-term potentiation of evoked synaptic currents. The mini frequency potentiation is initiated postsynaptically and ...
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    Necessity of evolution in cosmological γ-ray bursts (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 140-141 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] There have been suggestions'-4 that -y-ray bursts are caused by cosmic strings originating at redshifts as large as 1,000. Alternatively, colliding compact objects with modest redshifts (~1) have been assumed, implying luminosities of ~1051 ergs"1 (ref. 2). The brightness distribution of y-ray ...
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    Loss of homogeneity in a suspension by kinematic action (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 141-142 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] For our experiments we used a vortex breakdown chamber similar to that used by Escudier2 (Fig. la), in the hope that the converging and diverging streamlines in the vortex breakdown region would separate a homogeneous mixture by kinematic action. The height H of the chamber was 13.97 cm and its ...
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    Response of alluvial systems to fire and climate change in Yellowstone National Park (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 147-150 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fire regimes in the high-elevation conifer forests of the Yellowstone region are characterized by large, infrequent, standreplacing events, as exemplified by the fires of 1988 (ref. 5). We have studied the effects of such fires on the northeastern Yellow-stone landscape (Fig. la), an area of ...
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    NMR characterization of isomers of C 78 , C 82 and C 84 fullerenes (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 142-145 
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    Notes: [Auszug] We isolated C7g, C82 and C84 by high-performance liquid chromatography (the preparation is described in detail elsewhere4'5). Laser-desorption time-of-flight mass spectra were obtained to confirm the purity of the isolated samples. We used an ArF (193 nm) laser as the desorption light source5. ...
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    Channel control (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 363-363 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Hartzell et al.1 concluded that a membrane-delimited pathway for modulation of calcium channels by the stimulatory guanine nucleotide-binding protein Gs does not function in amphibian and mammalian cardiomyocytes. Because their conclusion regarding mammalian cardiomyocytes ...
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    Channel control (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 364-364 
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    Notes: [Auszug] Harizell Et al. Reply The purpose of our paper1 was to test the hypothesis7 that a direct G-protein pathway is necessary to explain the effects of sympathetic nerve stimulation on heart. We do not conclude that direct G-protein mechanisms do not exist. Rather, we document that under ...
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    Group therapy (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 367-367 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE cover of this volume features the theme of life, with Adam handing Eve a tile depicting the first element in the periodic table. Tiles for the biologically important alkali and alkaline earth metals, sodium, potassium, magnesium and calcium, nine transition metals, and the ...
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    Heliconius (1991)
    [s.l.] : Nature Publishing Group
    Nature 354 (1991), S. 368-368 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Heliconius charitonia (zebra butterflies). The farthest butterfly is marked as part of a capture-release study. From Sarapiqui Chronicle: A Naturalist in Costa Rica by Alien M. Young. Smithsonian Institution Press, $40 (hbk), $16.95 ...
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