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  • Nature Publishing Group  (3,471)
  • 2005-2009
  • 1980-1984  (3,471)
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  • 1981  (3,471)
  • 101
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    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 694-694 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Washington In a move which could persuade the Reagan Administration to drop anti-trust charges against the massive American Telephone and Telegraph Company (AT&T, otherwise known as the Bell System), the US Senate has passed legislation that would allow the company to set up a wholly-owned ...
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  • 102
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    Nature 293 (1981), S. 696-696 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Upon my return from vacation, I was taken aback to discover that I was referred to in your editorial of 3 September (p.2) as one of the creators or co-authors of the works of Isadore (Isidore) Nabi. This is completely untrue. I am shocked that you make this allegation without checking with ...
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  • 103
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    Nature 293 (1981), S. 702-703 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE MECHANISM by which lympho-reticular cells kill target cells is much less well understood than target cell lysis by antibody and complement. A recent international workshop* was designed to explore what was known of mechanisms of cell mediated lysis and to make comparisons between the ...
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  • 104
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    Nature 293 (1981), S. 711-713 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The radio source 1413 + 135 is shown to be one of the strongest known emitters of millimetre radiation. The energy distribution of this object measured between metre and X-ray wavelengths reveals that most of the power emitted by this object comes out at millimetre and far-IR wavelengths. If ...
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  • 105
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    Nature 293 (1981), S. 724-725 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] From a 0.5% methane in argon plasma, I have produced a species having a spectral absorption pattern that correlates with the principal diffuse interstellar bands5. The products of the discharge are trapped in an argon matrix at T〈20K and spectroscopic measurements made by transmitting through ...
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  • 106
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    Nature 293 (1981), S. 729-731 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] Samples were collected at 3051.1' N, 7941.8' W in 525 m of water in late August 1979 using 30-1 Teflon-coated GO-FLO (General Oceanics) bottles hung on Kevlar line. Preparation and analysis of these samples for particulate trace metal and particulate organic carbon analysis are described ...
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  • 107
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    Nature 293 (1981), S. 737-738 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The direct effects of R1881 and cyproterone acetate on the human chorionic gonadotropin (HCG)-stimulated accumulation of testosterone by testicular cells were investigated in vitro3. Treatment with HCG (10 ng ??G1) resulted in a 40-fold increase in the accumulation of testosterone over untreated ...
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  • 108
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] The SB antigens are identified by a primed lymphocyte typing (PLT) system which has been optimized to ensure reproducible typing18. The 'reagents' used to define the five SB antigens are sets of cryopreserved primed lymphocytes from 10 different donor combinations, and include two reagents to ...
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  • 109
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    Nature 293 (1981), S. 597-597 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Washington Dr Philip Handler, who retired earlier this year after twelve years as president of the US National Academy of Sciences, has been awarded the National Medal of Science, America's highest scientific award, by President Ronald Reagan for his "outstanding contribution to biochemical ...
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  • 110
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    Nature 293 (1981), S. 599-599 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The British Science and Engineering Research Council is alarmed that the quality of research in some outstanding science departments is being jeopardized by the reluctance of universities to be sufficiently selective in deciding where to make economies. The council's anxiety has apparently ...
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  • 111
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    Nature 293 (1981), S. 600-600 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The United Kingdom Atomic Energy Authority confirmed last week that its Harwell laboratory is acting as a consultant to the King Abdulaziz University in Jeddah, Saudi Arabia, on the development of an international energy research centre. But the authority insists that no part of its brief will be ...
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  • 112
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    Nature 293 (1981), S. 601-601 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The British agriculture ministry is appealing to the public to notify sightings of badger carcasses which it will then test for infection with bovine tuberculosis. This latest move to increase the number of notifications, first requested in 1976, comes on the heels of the ministry's announcement ...
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  • 113
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    Nature 293 (1981), S. 602-602 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - That science is more complex that it was fifty years ago is reflected in the fragmentation of subjects into more and more specialities, each requiring at least one journal of its own to lend an air of respectability. The hard-pressed scientist wishing to keep a tenuous grasp on the broad ...
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  • 114
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    Nature 293 (1981), S. 609-609 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE Chemolithotrophic bacteria have long been recognised as contributing to primary production through carbon dioxide fixation independent of solar energy. Sulphide-oxidising chemolitho-trophs were subsequently shown to be at the base of food chains on hydrothermal vents in the Galapagos Rift1 and ...
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  • 115
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    Nature 293 (1981), S. 602-602 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Barrie Pearson (Nature 3 September, p.6) objects to Antony Flew's (Nature 16 July, p. 192) "formulation of the principle of natural selection as non-random survival" on the grounds that it is an "empirically empty concept if the range of possibilities the non-random survivors were chosen from ...
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  • 116
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    Nature 293 (1981), S. 605-606 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DURING the week of June 22nd some fifty scientists, engineers, government officials and research directors along with a few stray social scientists and humanists, met outside Lisbon in an opulent 18th century palace. Replete with its own chapel, sculptured gardens, fountains and lavishly-tiled ...
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  • 117
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    Nature 293 (1981), S. 609-609 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] IN THE EARLY DAYS of palaeomagnetism a major problem was whether rocks can retain their magnetization unaffected over millions of years. It was suggested that one of the many factors that might affect the magnetization is stress, and Graham1 argued that, because of magnetostriction, igneous rocks ...
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  • 118
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    Nature 293 (1981), S. 611-616 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Extended X-ray absorption fine structure is used to study local order in silicate glasses around sodium and silicon atoms. It is demonstrated that modifying cations like sodium have well-defined short range order that is complementary rather than incidental to the glass forming silicate ...
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  • 119
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    Nature 293 (1981), S. 607-608 
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    Notes: [Auszug] THE development of adult personality depends to a considerable extent on experiences in childhood, most of which occur in the context of relationships with parents, siblings, peers and other important figures in the child's life. The nature of those relationships are influenced by, and in turn ...
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  • 120
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    Nature 293 (1981), S. 610-610 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] One of the greatest successes of the Exhibition of Electricity is certainly the arrangement for the telephonic hearing of theatrical performances which has been organised by the Societe Generate des Telephones. By means of an electrical connection which has been established between the Opera, the ...
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  • 121
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    Nature 294 (1981), S. 681-682 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The coincidence of recent events in Eastern Europe with the Christian celebration of the ancient festival of the winter solstice is not accidental. If, in Poland, the tide of social change that has occupied the past eighteen months is to be turned back by the threat of force, when better than this ...
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  • 122
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    Nature 294 (1981), S. 682-682 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The British government has now agreed to pay the second instalment of the cost of reorganizing and running down the British university system, decreed by the then Secretary of State for Education and Science just over a year ago. During the present academic year (which ends on 31 July 1982), the ...
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    Nature 294 (1981), S. 683-684 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Washington A top level advisory committee to the US Department of Energy (DoE) has told the Reagan Administration politely but firmly that it is not making the best use of its re-sources for energy research. In particular, the committee says that there is insufficient support for conservation ...
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  • 124
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    Nature 294 (1981), S. 683-683 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Washington Following Congress's decision last month to give the go-ahead for the con-struction of the liquid metal fast breeder reactor at Clinch River in Tennessee, the focus of the controversy sur-rounding the project has shifted back to the Nuclear Regulatory Commission (NRC), which would have ...
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  • 125
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    Nature 294 (1981), S. 684-684 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Washington Harvard Medical School announced last week that it was setting up a special committee of both faculty members and outside academics to recommend how the school should deal with future cases in which research workers are accused of pro-ducing falsified research data. This announcement ...
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  • 126
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    Nature 294 (1981), S. 684-684 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] The European Molecular Biology Laboratory at Heidelberg has half the Christmas present it was promised a few months ago: a liquid-helium temper-ature transmission electron microscope lens from Siemens AG, Munich, but not the pictures that should follow from it. Dr Arthur Jones, head of the ...
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  • 127
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    Nature 294 (1981), S. 684-685 
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    Notes: [Auszug] When the director-designate of the European Molecular Biology Laboratory (EMBL) in Heidelberg takes over from Sir John Kendrew in April, he will not find much room for movement in the budget. Last June, Sir John asked the ten-nation council for DM 32 million (7.5 million) for 1982. In the event the ...
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  • 128
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    Nature 294 (1981), S. 685-685 
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    Notes: [Auszug] The "state of war' proclaimed by General Jaruzelski's "Military Council for National Salvation" has brought all academic life in Poland to a standstill. The universities are closed as are several institutes of the academy of sciences. Scores of scientists and scholars have been arrested although ...
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  • 129
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    Nature 294 (1981), S. 685-685 
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    Notes: [Auszug] Two British agricultural research insti-tutes, the Long Ashton Research Station in Bristol and the Animal Breeding Research Organisation in Edinburgh, could be drastically cut or even closed if an economy proposal by the Agricultural Research Council is approved at its next meeting in February. ...
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    Nature 294 (1981), S. 685-686 
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    Notes: [Auszug] The large electron-positron ring is on the move in more than one sense. LEP will be the next big accelerator at CERN, the European Centre for Nuclear Physics, Geneva, and last week CERN member states finally agreed on the budget under which it will be built. Thus construction can begin as soon as ...
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    Nature 294 (1981), S. 686-686 
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    Notes: [Auszug] The British government is sticking to its guns over cuts in university grants, indicating that universities have failed to convince the government that spreading the cuts over five instead of three years would cost less because compulsory redun-dancies, involving large compensation payments, would ...
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    Nature 294 (1981), S. 686-686 
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    Notes: [Auszug] Brussels A deep division of opinion has become evident among the EEC's institutions over the need for strict legal controls to minimize the dangers of research using recombinant DNA techniques. By a narrow margin, the European Parliament's Committee on the Environ-ment, Public Health and Consumer ...
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    Nature 294 (1981), S. 686-687 
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    Notes: [Auszug] The British experiment to explore the feasibility of electronic scientific communication is well under way. The experimental electronic journal of the Universities of Loughborough and Birmingham, Computer-Human Factors, has received 16 papers in its first year more than an earlier experiment in ...
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    Nature 294 (1981), S. 687-687 
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    Notes: [Auszug] Washington It may be another week before the verdict is known on the creationist trial which ended in Little Rock, Arkansas, last Thursday. Initially, Judge William Overton had promised an immediate verdict on whether a new state law requiring equal time for the teaching of evolution and "creation ...
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    Nature 294 (1981), S. 688-688 
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    Notes: [Auszug] SIR In your excellent leading article of 26 November (p.295) you state that the Science and Engineering Research Council "has just put off a plan to break new ground in the fashionable field of molecular electronics". It is certainly true that we are unable to fund in an adequate fashion ...
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    Nature 294 (1981), S. 688-688 
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    Notes: [Auszug] SIR The objection of Darnbrough et al. (Nature 26 November, p.294) to data in our BioSystems paper on the origin of life is based, according to correspondence, on experiments with ATP at/?H 11, where ATP is unstable. On page 162 of the article, which they cite inaccurately, experiments at/?H 7.2 ...
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    Notes: [Auszug] SIR We appeal for help to the editorial staff of Nature, to our colleague scientists and to the World Federation of Scientific Workers. We are research workers of Jewish origin. More than two years ago, we came to the decision to leave the Soviet Union and accordingly applied for permission for ...
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    Nature 294 (1981), S. 688-688 
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    Notes: [Auszug] SIR The problems raised in recent letters (7 May, p.7, 28 May, p.278) about literature search and by Dana L. Roth (8 October, p.422) about recruiting librarians with subject expertise may be solved if and when today's librarians turn towards Anarchism as in the following: "How to be an Anarchistic ...
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    Nature 294 (1981), S. 689-690 
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    Notes: [Auszug] LEUKOCYTES which are stimulated with mitogens or strong antigens have long been known to secrete mediators with profound effects on other leukocytes. Non-immuno-globulin protein products with effector properties in the immune system have been designated 'lymphokines' and have a wide spectrum of ...
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    Nature 294 (1981), S. 690-690 
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    Notes: [Auszug] FEW areas of astrophysics have not seen major changes following the highly successful Einstein X-ray observatory mission. The impact on the study of super-nova remnants (SNRs) has been particu-larly impressive. When a massive star dies as a supernova, a shock wave is driven out-wards from the site ...
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    Nature 294 (1981), S. 691-692 
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    Notes: [Auszug] INTEREST in stress fibres arises in part because their organization resembles the structure of striated muscle myofibrils. Not only do they contain many of the same proteins (for example, actin, myosin, a-actinin and tropomyosin) but many of these are arranged in an alternating periodic pattern ...
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    Nature 294 (1981), S. 692-693 
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    Notes: [Auszug] THE question posed in the title has provided a recurrent theme in the study of the structure of non-crystalline solids since the seminal work of Zachariasen in 1932. The absence of long-range order (periodicity) is a prerequisite for an amorphous material. The point at issue, therefore, is what ...
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    Nature 294 (1981), S. 693-694 
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    Notes: [Auszug] MANY diverse biological processes are regulated by the concentration of intra-cellular calcium, including cell motility and the synthesis and degradation of biologic-ally important peptides and nucleotides. The effects of calcium are often mediated by the small (molecular weight 16,500), acidic ...
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    Notes: [Auszug] IT is now twenty-five years since dimethylnitrosamine was shown to cause liver cancer in rats in the historic experiments of Barnes and Magee. Tumours have now been shown to be induced by a wide variety of 7V-nitroso compounds in many species of animal and there is no reason to believe that man ...
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    Nature 294 (1981), S. 695-696 
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    Notes: [Auszug] IT is now ten years since Singer and Nicholson unveiled their fluid mosaic model of the biological membrane to an admiring world. To have survived so long is a complement both to the basic correctness of the model and to its flexibility. Predic-tably, much work over the intervening period has been ...
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    Nature 294 (1981), S. 694-694 
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    Notes: [Auszug] THE VOYAGE OF THE “VEGA“ AROUND ASIA AND EUROPE By A.E. Nordenskjöld (Macmilllan & Co., 1881) THE voyage of the Vega will be in many respects one of the most memorable events in the history of navigation. For the first time a continent has been circumnavigated, so far as ...
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    Nature 294 (1981), S. 696-696 
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    Notes: [Auszug] COMET BRADFIELD, 1979X, is the comet in question and recent measurements indicate that the ratio between the mass of gas and the mass of dust emitted by this comet per unit time is higher than that measured for any other comet. The underlying message is that no two comets seem to be the same and ...
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    Nature 294 (1981), S. 697-699 
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    Notes: [Auszug] The diversity of lymphocytes has made it difficult to study the properties of a specific lymphocyte type. Here we describe methods used in long-term culture and cloning of T lymphocytes and discuss the potential uses of these cell lines in ...
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    Nature 294 (1981), S. 699-704 
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    Notes: [Auszug] The 1883 eruption of Krakatau was a modest ignimbrite-forming event. The deposits are primarily coarse-grained dacitic, non-welded ignimbrite. Large explosions produced pyroclastic flows that entered the sea, generating destructive tsunami. Grain-size studies of the ignimbrite suggest that these ...
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    Nature 294 (1981), S. 704-707 
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    Notes: [Auszug] Surface wind velocities have been derived from backscatter measurements of the ocean surface made by a satellite-borne, microwave sensor. Comparisons with high-quality surface-based measurements obtained during the Joint Air–Sea Interaction experiment are described. The accuracy of the ...
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    Notes: [Auszug] An Acheulian industry in association with a hominid molar has been found at Pontnewydd Cave. This tooth represents the oldest hominid specimen known from Wales and, except for the Swanscombe fossil, from Britain. The molar is probably from a young adult and the tooth closely resembles those of ...
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    Nature 294 (1981), S. 713-718 
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    Notes: [Auszug] The DNA sequences of the 14 exon junctions in the murine α-fetoprotein gene were determined using cloned genomic DNA. When these exons were examined with respect to the polypeptide segments they encoded, a direct correspondence between a threefold repeat of four exons and three protein ...
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    Nature 294 (1981), S. 718-722 
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    Notes: [Auszug] Membrane-bound lectins and some lipid probes are incapable of passing through the tight junction region of epithelial cell membranes. The lectins are immobile on the cell surf ace, but lipid probes diffuse freely in the membrane. The ability of a lipid probe to pass the tight junction is correlated ...
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    Nature 294 (1981), S. 722-724 
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    Notes: [Auszug] Since the discovery of cosmic ?-ray bursts1, there have been many observations of these phenomena2, but so far no celestial object has been positively identified with any ?-ray burster at other than ?-ray energies3"7. In order to make an identifica-tion, an interplanetary network of satellites with ...
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    Nature 294 (1981), S. 727-728 
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    Notes: [Auszug] In an analysis of the imaging of the double quasar Young et al.5 suggested that three images are formed. Two images A and Bl lie 5 and 1 arc s respectively on either side of a faint elliptical galaxy and correspond to the objects for which photometry and spectrophotometry have been reported. The ...
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    Nature 294 (1981), S. 725-727 
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    Notes: [Auszug] During June-August 1979 and 1980 extensive optical obser-vations were made of the X-ray burst source 4U/MXB1636-53 (see refs 9, 10 for properties of the faint blue counterpart (B 18) of this source). Some of these observations were made simultaneously with the Japanese X-ray observatory Hakucho. ...
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    Nature 294 (1981), S. 728-730 
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    Notes: [Auszug] Trapped non-thermal continuum (NTC) is used to describe broad-band radio noise at frequencies ^40 kHz observed by spacecraft in the plasmatrough, the cavity of low-density plasma between the Earth's plasmasphere and magnetosheath1. Escaping NTC is noise at higher frequencies which propagates ...
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    Notes: [Auszug] Values of l.o.d. were obtained by smoothing and then differentiating our LLR estimates9 of the rotation of the Earth as a function of time. These values were corrected for the effects of polar motion with pole positions determined by the Bureau International de l'Heure10. Our results were tabulated ...
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    Nature 294 (1981), S. 732-733 
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    Notes: [Auszug] In the Earth's upper atmosphere solvated electrons may be formed by attachment of free electrons to clusters of molecules having large dipole moments or polarizabilities. Thus, solvated electron formation would be restricted to regions where both free electrons and the corresponding neutral species ...
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    Nature 294 (1981), S. 733-735 
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    Notes: [Auszug] Cryogenic sampling with subsequent analysis of the samples in the laboratory is an excellent tool for simultaneously measur-ing a variety of stable trace gases in the atmosphere1'2; vertical profiles of H2, CH4, CO, CO2, N2O, CFC13, CF2C12 and CH3C1 have already been measured up to 36 km altitude. ...
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    Nature 294 (1981), S. 735-737 
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    Notes: [Auszug] Figure 1 shows a plot of the SASS wind vectors for Rev. 557 (23.16 GMT, 4 August 1978) together with wind speeds measured by ships at the corners of the JASIN meteorological triangle. Over most of the area SASS winds are 7 m s"1 or less but in a region centred on 59.1 N and 12.0 W, the SASS speeds ...
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    Nature 294 (1981), S. 737-739 
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    Notes: [Auszug] Fig. 1 Comparison of integrated atmospheric water vapour 〈?t as measured by the SMMR and by radiosondes, x, JASIN values; , tropical soundings, a indicates tropical soundings for which SMMR values may be too high due to the island of Guam being within the field of view. 6, SMMR values may have ...
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    Nature 294 (1981), S. 739-741 
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    Notes: [Auszug] CRM was induced in samples from Site 332B of Leg 37 of the Deep Sea Drilling Project. The chemical alteration that occurs when these basalts are heated above 200 C has been well documented4'7. The principal magnetic mineral, titanomaghaemite, breaks down forming an intergrowth of a strongly ...
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    Nature 294 (1981), S. 741-744 
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    Notes: [Auszug] Calcareous nannofossils (dominantly coccoliths) comprise about half of the CaCO3 in deep-sea sediments5. Because of their abundance, shallow and restricted depth habitat6, wide geographical distribution6, and dissolution-resistant charac-teristics7'9, the stable isotope record of calcareous ...
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    Nature 294 (1981), S. 744-747 
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    Notes: [Auszug] We used the property that imaginai disk tissue differentiates when transplanted into a metamorphosing larva to determine the fate of particular first leg disk regions (Fig. la,b). The three-quarter lateral plus endknob fragment (3/4L + EK) differentiated sectors A, B, C and D plus the tarsus. This ...
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    Nature 294 (1981), S. 747-748 
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    Notes: [Auszug] The site lies along Middle Copperas Creek in western Kimble County, Texas, on the F6 Ranch. The tracks occur in the lower third of an approximately 1-metre-thick, thin-bedded, very fine-grained limestone. Rock layers containing footprints are exposed in a narrow belt on either side of the creek ...
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    Notes: [Auszug] Cytotoxic T lymphocytes (CTL) against syngeneic malignant melanoma cells (B16) were induced in in vitro primary culture of naive C57BL/6 mouse spleen cells with mitomycin C(MMC)-treated B16 melanoma cells. The cytotoxic activity was melanoma specific, since the cytotoxic lymphocytes killed only ...
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    Nature 294 (1981), S. 750-752 
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    Notes: [Auszug] T-cell clsones were derived by limiting dilution from 5-day C57BL/6 (B6) anti-DBA/2 (DBA) bulk mixed lymphocyte culture (MLC) populations as previously described7. Limiting dilution microcultures for cloning were seeded on (Jay 5 of MLC with 0.25 B6 anti-DBA cells per well, IxlO6 irradiated (2,000 ...
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    Nature 294 (1981), S. 754-757 
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    Notes: [Auszug] The light from a single 'resting', unfertilized oocyte (70 diameter, 200 pi volume), injected with aequorin to -5% of its volume, ranged typically between 1 and 16 photoelectrons per s above a background of 14 s"1 (Fig. ). The light signal was detected by holding the oocyte in a 75-^l-capacity ...
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    Nature 294 (1981), S. 752-754 
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    Notes: [Auszug] Fig. 1 Recordings of single-ion channel currents at three Ca concentrations from inside-out membrane patch of cultured (day 4) rat ventricular muscle cell at 26 C. The pipette (external side of membrane) contained Na-saline with 6 jxM Ca. The broken line above each trace marks zero current; inward ...
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    Notes: [Auszug] Morphine, the enkephalins and /3-endorphin exert their actions in the MBH by modulating the LH secreting activity of the pituitary35. The tonic inhibition effected by the endorphins has been most convincingly documented in immature female rats: a dramatic (10-fold) increase in serum LH levels is ...
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    Notes: [Auszug] In rat and guinea pig, the contractile response of the vas def erens to a single field stimulus to the sympathetic innervation consisted of several components. In the rat this response could be separated into two components; a rapid, early (200-300 ms) response (/s) and a slower (600-700 ms) ...
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    Nature 294 (1981), S. 761-763 
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    Notes: [Auszug] Two adolescent male macaque monkeys were used. One had taken part in behavioural tests of memory and had received surgical section of the fornix 6 months before the present study. The other had a high antibody titre to Herpes simiae and could therefore not be used in long-term experiments. There ...
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    Nature 294 (1981), S. 763-765 
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    Notes: [Auszug] Several lines of evidence indicate that 3H-Ro 15-1788 inter-acts with the same central type of BR sites as benzodiazepine agonists: (1) 3H-Ro 15-1788 was bound to the same maximal number of specific binding sites (Bmax) as 3H-clonazepam in frozen and extensively washed synaptic membrane fractions5 ...
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    Nature 294 (1981), S. 765-767 
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    Notes: [Auszug] Intestinal D-CaBP from both birds and animals has been well characterized with respect to its molecular weight, calcium-binding constants and electrophoretic mobility1'10'11. D-CaBP from chick brain resembles that of chick intestine immuno-logically, in molecular weight and in electrophoretic ...
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    Nature 294 (1981), S. 768-770 
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    Notes: [Auszug] The HuIFN- was iodinated in conditions designed to minimize the concentration of H2O2 in the reaction (Fig. 1). The high stability of the interferon allowed prolonged incubation and resulted in retention of biological activity. The 125I-labelled HuIFN-x03B1;x0391; had a specific activity of -50 mCi ...
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    Nature 294 (1981), S. 771-773 
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    Notes: [Auszug] Bacteria carrying recombinant molecular clones were radiolabelled in culture with 35SOfr and the cellular extracts subjected to immunoaffinity column chromatography as described in Fig. 1 legend. The presence of p60 among the proteins eluted from the columns was confirmed by phos-phorylation of the ...
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    Notes: [Auszug] A 45-yr-old woman was admitted to the hospital with generalized lymphadenopathy and hepatosplenomegaly. Her blood leukocyte count was 207,300 per mm3, with 93% abnormal lymphoid cells having indented or lobulated nuclei. Most of these cells formed spontaneous sheep erythrocyte rosettes. Peripheral ...
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    Nature 294 (1981), S. 773-776 
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    Notes: [Auszug] The nucleotide sequence of CaMV6'7 suggests that there are extensive regions of the genome which encode protein. To insert new DNA, however, it is necessary to identify non-coding or dispensable regions where insertions will not interfere with essential functions. To identify such regions, we ...
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    Nature 294 (1981), S. 776-778 
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    Notes: [Auszug] To investigate the regulation of n if expression by fixed N and O2 and to clarify the role of the nif A product, we have used a variety of K. pneumoniae strains transformed with plasmids permitting constitutive expression of the nif A gene. The gene was cloned as a Sail fragment (which also ...
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    Nature 294 (1981), S. 781-782 
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    Notes: [Auszug] THERE are already far too many books about Darwin, and most of them tell us more about their authors than their subject-matter. It would be an injustice to leave Mr Brent's book in that category without considerable qualification. It will certainly be widely read, and for many people it may be ...
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    Nature 294 (1981), S. 778-780 
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    Notes: [Auszug] Human diploid fibroblasts were grown from a primary skin expiant by standard techniques8. Approximately 109 cells were used to prepare total RNA by the guanidine HC1 method9. Enrichment for G6PD-specific mRNA was obtained by suc-cessive steps, consisting of oligo(dT)-cellulose chromatography and ...
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    Nature 294 (1981), S. 782-782 
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    Notes: [Auszug] TECHNIQUES for investigating high-level atmospheric motions have advanced considerably over the past 20 years, with the introduction of rockets, satellites and high-powered radar on the observational side, and the advent of computers for the analysis of data and their theoretical interpretation in ...
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    Notes: [Auszug] IT is now some 16 years since the first discovery of offshore gas in UK waters, and 13 years since the first commercial discovery of oil. In the period from 1964 to the present nearly 1,800 wells have been drilled. To those involved in exploration and in the production of oil and gas these have ...
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    Nature 294 (1981), S. 782-783 
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    Notes: [Auszug] PROGRESS in eye lens research, whilst resulting in a greater understanding of the organelle itself and its diseases, may also lead to discoveries in areas of more general interest. In his selection of ten con-tributions for this book, Professor Bloemendal has placed emphasis on the growing interest ...
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    Nature 294 (1981), S. 783-783 
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    Notes: [Auszug] THIS is an impressive work by any standards, even those of the publishing house of Dr W. Junk, which is renowned for its quality of production of specialized texts. Now, three volumes replace the previous book in the series dealing with Australian biogeography, published in 1959. It says much for ...
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    Nature 294 (1981), S. 784-784 
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    Notes: [Auszug] AN alternative title for this work might have been All About Anamorphs, yet ten years ago this would have meant nothing to a mycologist. Now we accept a whole terminology of "morphs", much to the fore in Biology of Conidial Fungi. "Morph" is sometimes used in all its nakedness, but more usually as ...
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    Notes: [Auszug] DR Edwards is to be congratulated on having produced what may well turn out to be the most influential text in the field of obstetrics and gynaecology published this century. Hitherto, these specialities have been surgically orientated, and principally concerned with the mechanical difficulties of ...
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    Nature 294 (1981), S. 785-786 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Physics ARECCHI, F.T. and AUSSENEGG, F.R. (eds). Current Trends in Optics. Invited Papers from the ICO-12 Meeting, Graz, Austria, 1981. Pp.190. Pbk ISBN 0-85066-222-2. (Taylor & Francis, London: 1981.) Pbk 12. DEVREESE, J.T. (ed.). Recent Developments in Condensed Matter Physics. Vol.1. ...
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  • 190
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    Nature 294 (1981), S. 599-599 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The United States Congress has a built-in flair for the theatrical. So much is clear from the circumstances that brought Dr George Keyworth and Dr Frank Press (his predecessor as Presidential Science Advisor now transmogrified to president of the National Academy of Sciences) to the same witness ...
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  • 191
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    Nature 294 (1981), S. 600-600 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Engineering education promises to be in the 1980s a lightning-rod for public solicitude to take the place occupied in the 1950s by the cause of motherhood. In the United States last week, Dr George Keyworth was wringing his hands before Congress in anxiety about the difficulties of recruiting and ...
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  • 192
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    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 600-600 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Economic crisis is at least even-handed. Last week, British newspapers were full of gloomy prophecies of how no fewer than a dozen among three-score British institutions are threatened with bankruptcy in the months ahead. The causes are easily described. Running costs have risen. The cost of ...
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  • 193
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    Nature 294 (1981), S. 601-601 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Washington In the first coherent statement of the Reagan Administration's thinking on science policy, Dr George (Jay) Key worth, the president's science adviser, said last week that the scientific community must be prepared not only to help identify areas in need of increased support, but also to ...
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  • 194
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    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 601-602 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Science in Spain seems to be embarked on a period of rather heady growth. Money under the direct control of the Spanish science research council, the Consejo Superior de Investigaciones Científicas (CSIC), will triple next year if decisions taken by the lower house of the Spanish parliament ...
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  • 195
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    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 602-602 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A British publicly-funded organization for encouraging innovation in industry has made its second major investment in the fledgling biotechnology industry. The British Technology Group (BTG an amalgamation of the former National Research Development Corporation and the National Enterprise Board) ...
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  • 196
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    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 602-602 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Brussels French doubts about the wisdom of opening up some public purchasing contracts in telecommunications to its partners in the European Economic Community held up agreement last Monday on a set of recommendations designed to stimulate the growth of the European market in telecommunications. ...
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  • 197
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    Nature 294 (1981), S. 602-602 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The shortfall in admissions of overseas students to British universities has not been as great as anticipated. According to the University Grants Committee (UGC) admissions of overseas undergraduates in 1981-82 totalled 4,918 compared with 5,017 in 1980-81, a shortfall of about 2 per cent. ...
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  • 198
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    Nature 294 (1981), S. 603-603 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Washington After reviewing the scientific literature on the health risks associated with the use of nitrites and nitrates as food preservatives, a committee of the National Academy of Sciences National Research Council (NRC) has concluded that current exposure levels constitute an insufficient ...
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  • 199
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    Nature 294 (1981), S. 603-603 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] One of the few European research facilities which can claim a substantial lead over the United States in both size of budget and research quality, the high flux neutron beam laboratory at Grenoble (Institut Laue-Langevin, ILL), now has the money and agreements it needs to keep ahead of the ...
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    [s.l.] : Nature Publishing Group
    Nature 294 (1981), S. 603-604 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The European commercial satellite launcher business is itself well launched. With two successful test flights to its credit, Ariane, the European Space Agency's heavy satellite launcher, is already qualified for service. So whatever the outcome of the fourth and final test flight this week, the ...
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