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  • Nature Publishing Group  (18,756)
  • 1990-1994  (18,756)
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Year
  • 1
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    Volatiles in submarine glasses as a discriminant of tectonic origin: application to the Troodos ophiolite (1990)
    Nature Publishing Group
    In:  Nature, 343 (6254). pp. 159-161.
    Details
    Publication Date: 2019-05-08
    Description: ISOTOPE ratios and concentrations of incompatible trace elements are remarkably successful in discriminating the tectonic origin and magmatic source components for basalts1–5. But problems remain with discriminating the tectonic origin of some tholeiites, especially where field relations and other geological evidence are ambiguous. For example, the tectonic origin of basalts from the Troodos ophiolite (Cyprus) has been debated for several decades. Most workers have been unable to distinguish between an island-arc and/or back-arc origin for the ophiolite6–8. Here we use volatile, K2O and TiO2 contents from ∼250 fresh submarine volcanic glasses to discriminate between tholeiites from different tectonic regimes. K2O÷H2O ratios are lower (〈0.70) in spread ing-centre glasses than in those from island arcs and intraplate oceanic islands. Back-arc-basin basalts can generally be separated from mid-ocean-ridge basalts by their high H2O contents. Using this information, we show that some fresh glasses from the Troodos ophiolite have a clear back-arc-basin affinity.
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  • 2
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    Activity levels of Nautilus in the wild (1993)
    Nature Publishing Group
    In:  Nature, 362 (6421). pp. 626-628.
    Details
    Publication Date: 2019-02-07
    Description: WHILE ammonites and all other ectocochleate cephalopods became extinct, nautiloids survived relatively unchanged from the Ordovician, suggesting that they are unusually well adapted to their niche. Here we obtain high-resolution tracks of Nautilus positions and depths, combined with telemetered jet pressures, which clarify both its lifestyle and economics. Nautilus is more active in nature than in captivity1, but its energy costs are lower than projected2,3. Viewing Nautilus as 'vertic', rather than benthic, resolves this contradiction. Records show that the cost of transport is the same in any direction within a vertical plane. Living on a reef face swept by a lateral current means that vertical movements4,5 sample large areas for chemical trails. A detected trail can be followed upcurrent in the slow-moving boundary layer, but no effort is wasted on horizontal movement without good prospects for food; long-range movements are downcurrent and made by drifting. Once fed, a Nautilus can reduce its energy costs by moving to deeper, cooler waters, where a single meal can last for months.
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  • 3
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    Core correlations (1994)
    Nature Publishing Group
    In:  Nature, 371 (6495). pp. 289-290.
    Details
    Publication Date: 2018-03-02
    Type: Article , PeerReviewed
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  • 4
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    Deep ocean circulation puzzle (1992)
    Nature Publishing Group
    In:  Nature, 356 (6372). pp. 744-746.
    Details
    Publication Date: 2018-03-02
    Type: Article , PeerReviewed
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  • 5
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    Natural habitat of coelacanths (1990)
    Nature Publishing Group
    In:  Nature, 346 (6282). pp. 323-324.
    Details
    Publication Date: 2017-08-10
    Type: Article , PeerReviewed
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  • 6
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    Close tetrapod relationships of the coelacanth Latimeria indicated by haemoglobin sequences (1991)
    Nature Publishing Group
    In:  Nature, 351 (6325). pp. 394-397.
    Details
    Publication Date: 2017-08-10
    Type: Article , PeerReviewed
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  • 7
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    Which home for coelacanth? (1993)
    Nature Publishing Group
    In:  Nature, 363 (6428). p. 405.
    Details
    Publication Date: 2017-08-03
    Type: Article , PeerReviewed
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  • 8
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    Coelacanth tissue bank (1992)
    Nature Publishing Group
    In:  Nature, 357 (6374). p. 105.
    Details
    Publication Date: 2017-08-03
    Type: Article , NonPeerReviewed
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  • 9
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    Close encounter in the deep (1994)
    Nature Publishing Group
    In:  Nature, 371 (6498). p. 563.
    Details
    Publication Date: 2017-05-10
    Type: Article , PeerReviewed
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  • 10
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    Octopod 'ballooning' response (1992)
    Nature Publishing Group
    In:  Nature, 356 (6366). p. 199.
    Details
    Publication Date: 2017-03-14
    Type: Article , PeerReviewed
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  • 11
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    Carbon dioxide limitation of marine phytoplankton growth rates. (1993)
    Nature Publishing Group
    In:  Nature, 361 . pp. 249-251.
    Details
    Publication Date: 2017-02-24
    Description: THE supply of dissolved inorganic carbon (DIC) is not considered to limit oceanic primary productivity1, as its concentration in sea water exceeds that of other plant macronutrients such as nitrate and phosphate by two and three orders of magnitude, respectively. But the bulk of oceanic new production2 and a major fraction of vertical carbon flux is mediated by a few diatom genera whose ability to use DIG components other than CO2, which comprises 〈 1% of total DIC3, is unknown4. Here we show that under optimal light and nutrient conditions, diatom growth rate can in fact be limited by the supply of CO2. The doubling in surface water pCO2 levels since the last glaciation from 180 to 355 p.p.m.5,6 could therefore have stimulated marine productivity, thereby increasing oceanic carbon sequestration by the biological pump.
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  • 12
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    Climate response to smoke from the burning oil wells in Kuwait (1991)
    Nature Publishing Group
    In:  Nature, 351 (6325). pp. 367-371.
    Details
    Publication Date: 2017-02-24
    Description: The response of the global climate system to smoke from burning oil wells in Kuwait is investigated in a series of numerical experiments using a coupled atmosphere–ocean general circulation model with an interactive soot transport model and extended radiation scheme. The results show a decrease in surface air temperature of ~4 °C in the Gulf region. Outside this region the changes are small and statistically insignificant. No weakening of the Indian summer monsoon is observed.
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  • 13
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    Fast flickers in the tropics (1994)
    Nature Publishing Group
    In:  Nature, 372 (6507). pp. 621-622.
    Details
    Publication Date: 2016-07-15
    Type: Article , PeerReviewed
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  • 14
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    An unstable superconveyor (1994)
    Nature Publishing Group
    In:  Nature, 367 (6462). pp. 414-415.
    Details
    Publication Date: 2016-06-16
    Type: Article , PeerReviewed
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  • 15
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    Massive iceberg discharges as triggers for global climate change (1994)
    Nature Publishing Group
    In:  Nature, 372 (6505). pp. 421-424.
    Details
    Publication Date: 2016-06-10
    Description: Observations of large and abrupt climate changes recorded in Greenland ice cores have spurred a search for clues to their cause. This search has revealed that at six times during the last glaciation, huge armadas of icebergs launched from Canada spread across the northern Atlantic Ocean, each triggering a climate response of global extent.
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  • 16
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    Diminishing oxygen (1992)
    Nature Publishing Group
    In:  Nature, 358 (6389). pp. 710-711.
    Details
    Publication Date: 2016-06-10
    Type: Article , PeerReviewed
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  • 17
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    Interhemispheric transport of carbon dioxide by ocean circulation (1992)
    Nature Publishing Group
    In:  Nature, 356 (6370). pp. 587-589.
    Details
    Publication Date: 2016-06-10
    Description: ALTHOUGH anthropogenic emissions of carbon dioxide have today created a greater atmospheric CO2concentration in the Northern than in the Southern Hemisphere, a comparison of interhemispheric CO2 profiles from 1980 and 1962 led Keeling and Heimann1,2 to conclude that, before the Industrial Revolution, natural CO2 sources and sinks acted to set up a reverse (south to north) gradient which drove about one gigatonne of carbon each year through the atmosphere from the Southern to the Northern Hemisphere. At steady state, this flux must have been balanced by a counter flow of carbon from north to south through the ocean. Here we present a means to estimate this natural flux by a separation of oceanic carbon anomalies into those created by biogenic processes and those created by CO2 exchange between the ocean and atmosphere. We find that before the Industrial Revolution, deep water formed in the northern Atlantic Ocean carried about 0.6 gigatonnes of carbon annually to the Southern Hemisphere, providing support for Keeling and Heimann's proposal. The existence of this oceanic carbon pump also raises questions about the need for a large terrestrial carbon sink in the Northern Hemisphere, as postulated by Tans et al.3, to balance the present global carbon budget.
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  • 18
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    Upset for Milankovitch theory (1992)
    Nature Publishing Group
    In:  Nature, 359 (6398). pp. 779-780.
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    Publication Date: 2016-06-10
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  • 19
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    Hydrothermal activity and metallogenesis in the Lau back-arc basin (1991)
    Nature Publishing Group
    In:  Nature, 349 (6312). pp. 778-781.
    Details
    Publication Date: 2016-05-17
    Description: IN 1989, the submersible Nautile discovered one of the most active hydrothermal fields on the modern ocean floor, in the Lau back-arc basin (Fig. 1). The field contains high-temperature white and black smokers, and as we report here, its characteristics contrast strongly with those of the hydrothermal fields found at normal mid-ocean ridges. The main differences are the acidity (pH as low as 2), chemistry and temperature (up to 400 °C) of the hydrothermal fluids, the composition of the ore deposits, and the volcanic and tectonic environments. The fluids also have very high concentrations of trace metals, and primary gold is present in the accompanying mineral deposits. Our data show that these back-arc deposits in the Lau Basin are intermediate between typical mid-ocean-ridge mineralization and massive sulphide deposits of the Kuroko type.
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  • 20
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    Nitrate respiration in the hydrothermal vent tubeworm Riftia pachyptila (1993)
    Nature Publishing Group
    In:  Nature, 366 (6453). pp. 338-340.
    Details
    Publication Date: 2015-08-31
    Description: THE vestimentiferan tubeworm Riftia pachyptila is found around hydrothermal vent areas in the deep sea. Intracellular bacterial chemoautotrophic symbionts use the oxidation of sulphide from the effluent of the vents as an energy source for CO2 fixation. They apparently provide most or all of the nutritional requirements for their gutless hosts1–5. This kind of symbiosis has since been found in many other species from various other phyla from other habitats6–9. Here we present results that the bacteria of R. pachyptila may cover a significant fraction of their respiratory needs by the use of nitrate in addition to oxygen. Nitrate is reduced to nitrite, which may be the end product (nitrate respiration)10 or it may be further reduced to nitrogen gas (denitrification)11. This metabolic trait may have an important role in the colonization of hypoxic habitats in general by animals with this kind of symbiosis.
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  • 21
    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 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/355292a0
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  • 22
    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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  • 23
    Electronic Resource
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    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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  • 24
    Electronic Resource
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    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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  • 25
    Electronic Resource
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    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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  • 26
    Electronic Resource
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    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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  • 27
    Electronic Resource
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    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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  • 28
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    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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  • 29
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    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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  • 30
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    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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  • 31
    Electronic Resource
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    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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  • 32
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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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  • 33
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    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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  • 34
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    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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  • 35
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    Diabetes running wild (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 362-363 
    Details
    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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  • 36
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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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  • 37
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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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  • 38
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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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    Misrepresenting paradise (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 368-369 
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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 - 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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    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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    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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    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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    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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    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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    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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    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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    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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    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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    Dynamical development of a ring-like structure in the supernova 1987A nebula (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 58-61 
    Details
    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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    Surface catalysis studied by in situ positron emission (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 63-66 
    Details
    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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