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  • Wiley  (6,893)
  • Nature Publishing Group  (3,725)
  • 1970-1974  (10,618)
  • 1971  (10,618)
  • 1
    Electronic Resource
    Electronic Resource
    Calling the False Reverse Transcriptases (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 283-283 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SINCE the discovery of reverse tran-scriptase (the enzyme in tumour viruses which is capable of using the single stranded viral genome as a template for the synthesis of a double stranded DNA) was announced by Temin and Mizutani and Baltimore just a year ago, much confusion has arisen about the ...
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    URL: http://dx.doi.org/10.1038/231283b0
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  • 2
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    Tolerance to a Protein Antigen in a Poikilotherm, the Marine Toad Bufo marinus (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 321-322 
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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] Adult toads (National Reagents, Bridgeport, Connecticut) of both sexes (average weight about 250 g) were maintained at 37 C in moist sawdust and fed ground beef once a week. In the determination of the dose of BSA required to achieve optimal, immunization, we gave the animals a single injection of ...
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  • 3
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    Auxin Production by Phylloplane Fungi (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 332-332 
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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 three fungi were grown at different temperatures and for various times on a reciprocal shaker, with 100 ml. of Czapek's Dox medium in 1 1. flasks to ensure adequate aeration. At the end of the growing period the medium was checked to ensure that there was no contamination. The mycelium was ...
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  • 4
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    Burning Issues (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 334-335 
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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 ease with which thin sections of wood and fibrous cellulosic materials and textiles catch fire has been known for centuries, and treatments have been sought to reduce this risk. The use of flammable synthetic polymers as substitutes for, and in addition to, cellulosic materials has been ...
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  • 5
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    Electron Microscopy (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 337-337 
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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] IN the preface the author states that "... the primary objective of this book is to provide the reader with the foundation in biochemical concepts governing the preparatory procedures". Essentially he has succeeded in doing this, and has provided, at the same time, a very readable volume covering ...
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  • 6
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    British Diary (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 340-340 
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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] Tuesday, June 8 Molecular Biology of Synaptic Receptors (6.30 p.m.) Professor E. de Robertis, Biochemical Society, Neurochemical Group, at Charing Cross Hospital Medical School, Chandos Place, London WC2. Aerospace Antennas (three-day conference) Institution of Electrical Engineers, in ...
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  • 7
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    Cooperative Research in Trouble (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 206-207 
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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 industrial research associations are a particularly British invention (dating back to the twenties) which seems now to be near its end. In the House of Commons last week, Mr David Price told the Select Committee on Science and Technology (see page 208) that he would be scrutinizing carefully ...
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  • 8
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    Early Man in the East Rudolf Basin (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 213-213 
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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] EAST AFRICA has long been recognized as one of the best sources of early man material. Dr Louis Leakey's persistent faith in Olduvai Gorge in Tanzania has been clearly justified in the past two decades, and now field work by his son Richard Leakey and his colleagues in the Lake Rudolf area, north ...
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  • 9
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    Cyclic AMP: Kith and Kinase (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 214-214 
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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] FOR those persons who regret the passing of vitalism, the nearest thing to the elan vital is nowadays cyclic AMP. It has been implicated in the control of an extraordinary variety of biological processes-most recently in visual excitation, where it is reported to encompass a% change in' membrane ...
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  • 10
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    New Lower Limit for Quasar Masses (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 214-214 
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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] IT now seems firmly established that the mass of a quasi-stellar object must exceed 107 solar masses. In the next issue of Nature Physical Science, D. P. Whitmire and C. N. Davids describe yet another method of estimating this important parameter. Their method is based on the observation that in ...
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  • 11
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    Controlled Transcription in vitro (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 215-215 
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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] NEXT Wednesday's issue of Nature New Biology carries the story of one of those tour de force experiments with which molecular biologists periodically dazzle their expectant audiences. De Crombrugghe and six colleagues, a modestly sized group by the standards of the day and by the experiments, have ...
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  • 12
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    Magnetic Fields in Radio Sources (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 217-217 
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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 intense signals from most galactic and extragalactic radio sources are thought to be produced by the synchrotron process in which relativistic electrons gyrate in the source magnetic fields. Although the magnetic field structure has been derived from many sources from measurements of linear ...
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  • 13
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    Ice Caps: Selenium Pollution ? (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 218-219 
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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] FROM the purely scientific point of view the relative permanence of the major ice caps is one of their most endearing properties. For much of the ice which formed perhaps many thousands of years ago still exists and lies buried beneath subsequent annual layers, each of which is in some way typical ...
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  • 14
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    Environment: Remote Sensors at Work (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 219-220 
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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] AT the seventh international symposium on remote sensing of environment held at the University of Michigan from May 17 to 21, the topics for discussion included instrumentation, data handling, automated photo interpretation and the application of remote sensing to geology, soil science, ecology, ...
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  • 15
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    Switzerland: Searching for a Science Policy (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 224-225 
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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] AN analysis of Swiss science policy is difficult because in fact no general and systematic science policy has so far been adopted. About a month ago a very interesting report on this problem was released by the Organization for Economic Cooperation and Development (OECD), together with a set of ...
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  • 16
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    France: At the Crossroads (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 229-230 
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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] FRENCH scientific research has been passing through a period of uncertainty which started in May 1968 and is still continuing. It is now possible, however, to discern trends in the future orientation of French research by examining the research priorities selected for inclusion in the country's ...
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  • 17
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    Nuclear Energy: Signs of Change in Euratom (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 233-234 
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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] EURATOM cannot, by any stretch of the imagination, be considered a shining example of European cooperation in science and technology. Like many other European agencies, its aims have been frustrated by industrial nationalism among the six member countries of the European Economic Community, and it ...
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  • 18
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    Further Evidence of Lower Pleistocene Hominids from East Rudolf, North Kenya (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 241-245 
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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 1970 expedition organized by the National Museum of Kenya to East Rudolf recovered sixteen specimens of hominid which include some postcranial remains. This material adds further support to the view that two distinct hominids—Australopithecus and Homo—lived contemporaneously in the ...
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  • 19
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    Persistent Water Vapour Contamination and Stratospheric Measurement (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 258-260 
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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] Fig. 1 Altitude and frost point data during flight launched 1831 CST on September 21, 1970. Curve 1 represents data received from a sensor hanging from an 8 m cable, curve 2 from a sensor positioned at the end of a 1 m boom. Individual altitude points are shown by dots. All surfaces can adsorb and ...
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  • 20
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    Another Humoral Substance that enhances Adrenergic Responsiveness during Acute Renal Ischaemia (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 263-265 
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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] Fig. 1 Effect of reduced renal pressure on adrenergic responses during infusion of angiotensin. Hind paw perfusion pressure (PP) and systemic blood pressure (AP) are calibrated in mm Hg. The left hand portion shows responses to intra-arterial noradrenaline (50, 100, 200 ng) and sympathetic nerve ...
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  • 21
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    Electron Energy Loss Spectra of the Nucleic Acid Bases (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 262-263 
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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] All five nucleic acid bases were purchased from Calbiochem, and used without further purification. Films about 500-1,000 A thick were deposited onto ~30 A thick carbon substrates by vacuum sublimation. A Tyrex'crucible containing the powdered sample was heated slowly in an ion-pumped system ...
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  • 22
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    Electron Microscopic Studies of Lipid Protein Films (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 267-268 
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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] Ferritin molecules (horse spleen ferritin, Fluka AG Buchs) adsorbed on a lipid monolayer form a two dimensional closely packed lattice (Fig. 1). The lipid protein film is formed by placing the lipid film (stearic acid methyl ester and eicosic trimethyl ammonium bromide (4:1), surface pressure 30 ...
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  • 23
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    Clash of Ideas (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 269-269 
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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] ACCORDING to Popper, the best hope of achieving progress in science is to put forward bold, imaginative speculations, controlled by rigorous criticism, by a ruthless search for experimental refutations. Kuhn, however, thinks differently. According to Kuhn, a science begins to make real progress ...
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  • 24
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    Reports and Publications (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 272-272 
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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] not included in the Monthly Books Supplement Great Britain and Ireland The Exploitation of Biological Signals. By Professor B. Me A. Sayers. (Inaugural Lecture, 27 January 1970.) Pp. 123-156. (London: Imperial College of Science and Technology, 1971.) 40p. [54 British Launderers' Research ...
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  • 25
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    Population: Crying Halt in Britain (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 140-140 
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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] SETTING a thief to catch a thief, the House of Commons Select Committee on Science and Technology has now put forward a proposal that there should be a special office of government to formulate policy on the British population. The committee's recommendation is based on a public inquiry carried out ...
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  • 26
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    Lister Institute: New Wing for High Flyer (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 140-141 
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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 Lister Institute marked eighty years of existence this week with the official opening of the Wolfson wing, five storeys and 25,000 square feet of additional laboratory space built on the side of its London headquarters in Chelsea Bridge Road. The new wing cost £370,000, most of which was ...
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  • 27
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    Jitters at Nader Raid (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 143-144 
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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 consumer advocate Ralph Nader officially launched his investigation of the National Academy of Sciences last week by releasing the text of a letter sent on May 8 to Dr Philip Handler, president of the academy, and to Mr Clarence H. Linder, president of the associated National Academy of ...
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    Enzymes: Numinous Nuclease (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 146-146 
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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] A SIZABLE textbook could now be written about bovine pancreatic ribonuclease: it would encapsulate the most striking achievements of modern enzymology, protein chemistry, and X-ray crystallography. Last year the total synthesis of active ribonuclease was reported simultaneously by two laboratories. ...
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    Interstellar Molecules: Sulphur–at Last (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 146-147 
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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] ONE of the more elusive atoms in interstellar space has now been tracked down. In a recent International Astronomical Union Circular (No. 2322), P. M. Solomon, of Columbia University, reports observations of three new interstellar molecules, carried out in collaboration with K. Jefferts, A. Penzias ...
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    Compact Galaxies: Gamma Rays from 3C 120 (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 149-149 
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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] AFTER the discovery of the first y-ray star by Frye et al. (Nature, 223, 1320; 1969), it seemed inevitable that somebody would eventually find y-rays from discrete sources located outside our own galaxy. Surprisingly, the first extra-galactic y-ray emitter has been tracked down by a group of ...
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    Fish: The Disappearing Goby (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 150-150 
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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] GIVEN a river estuary in which population of fishes is extremely large from July to January when the fishes' gonads are reaching maturity and then almost disappears, which explanation is most likely to explain the disappearance of the fish-offshore migration to breed ; low temperatures; lowered ...
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    Specificity of Antibody Responses (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 151-151 
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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] HETEROGENEITY among mouse lymphocyte populations which are morphologically very similar is a source of sadness to the descriptive cytologist and a great joy to the experimental cellular im-munologist. At least two sorts of cells, named T and B to indicate their derivation from thymus and bone ...
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    Construction of Maps from “Odd Bits of Information” (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 158-159 
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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] Computer programs can produce very accurate maps from an apparently inadequate set of ...
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    Role of Subunits in the Ribosome Cycle (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 153-157 
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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] In this article Dr Davis reviews recent developments in the search for the precise nature of the cycle of ribosomes in protein ...
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    Enzyme Regulation, Lysine Pathways and Cell Wall Structures as Indicators of Major Lines of Evolution in Fungi (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 164-168 
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    Notes: [Auszug] The distribution of the two known pathways of lysine biosynthesis can be correlated with allosteric controls of enzymes and dichotomy of cellulose and chitin in ...
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    Interpretation of Extraterrestrial Lyman-alpha Observations (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 171-173 
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    Notes: [Auszug] All the a. m. observations proved that there exists a significant anisotropy of the Lyman-a background radiation with a pronounced broad spatial intensity maximum and minimum. This feature, and variations in intensity on a time scale of several months, is evidence against the hypothesis8 that the ...
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    Radon-222 Emanation and the High Apparent Lead Isotope Ages in Lunar Dust (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 174-175 
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    Notes: [Auszug] We propose that the escape of 222Rn, 2l9Rn and 220Rn produced in the 238U, 235U and 232Th decay chains may be a significant mechanism for a partial redistribution of the post-radon lead daughters. Kraner2 suggested that there may be an alpha-emitting radioactive deposit on the lunar surface as a ...
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    Depth Distribution in Ocean Basins and Plate Tectonics (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 179-180 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Examination of the topography of the sea floor and spreading rates in the central region of the world system of mid-ocean ridges shows that the width of the ridge7, the local topography8, and the thickness of layer 2 of the oceanic crust8 seem to be related to the spreading rate in the following ...
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    Biological Sciences: Blood Concentration of Noradrenaline in the Dog after Intravenous Administration and the Effects of Desipramine (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 181-182 
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    Notes: [Auszug] We have injected noradrenaline intravenously into dogs and measured the peak arterial concentration during the first circuit and the concentration in the "tail". We have also determined the effects of desipramine on these blood concentrations of noradrenaline. Dogs of either sex weighing 8-14 kg ...
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    Antigen-binding Small Lymphocytes in Delayed Hypersensitivity to Tuberculin (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 183-184 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Groups of four to six guinea-pigs were killed at intervals up to 28 days after primary immunization with 0. 1 ml. of BCG (Glaxo) in Freund's incomplete adjuvant (Difco) into each footpad. Half of each group of animals was skin-tested with 10 ug of purified protein derivative of mammalian tuberculin ...
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    Effect of Microamp Electrical Currents on Bone in vivo and its Measurement using Strontium-85 Uptake (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 190-192 
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    Notes: [Auszug] The implants used were similar to those of Bassett1 and each contained a 1. 4 V mercury cell in series with a 39 kohm resistor. These were encapsulated in bone cement from which protruded two platinum-iridium electrodes 1 mm in diameter, about 1 cm long and spaced 9 mm apart. The nominal short ...
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    Chromosomal and Serological Studies of the Caenolestidae and their Implications for Marsupial Evolution (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 194-195 
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    Notes: [Auszug] The chromosomes of Caenolestes obscurus (male, field number JAWK 342, Paramo de Purace, 3300m Depto. Cauca, Colombia) and Lestoros inca (male, field number JAWK 460, 25 km by road North-West Ollantaytambo, 3530m Depto. Cuzco, Peru) are shown in Fig. 1. The chromosomes of C. fuliginosus, not shown, ...
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    Spiral Arms in Space (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 197-198 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ONE of the intriguing features of many types of galaxy is their spiral structure. This spiral pattern of trailing arms is found in about half of all galaxies and is evidently a permanent or long enduring property. It could be a permanent imprint on the galaxy or it may be an ephemeral but repeating ...
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    Homage to Richard Rado (1971)
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    Nature 231 (1971), S. 198-198 
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    Notes: [Auszug] THE 26 papers in this volume are offered to Richard Rado in celebration of his sixty-fifth birthday. Such a birthday present is a tribute to the distinction of the mathematician and also to the abundant friendliness of the man. Rado was bora in Berlin and studied at the universities of Berlin, ...
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    Plasma Physics (1971)
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    Nature 231 (1971), S. 199-200 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] RESEARCH in the dynamics of wave propagation in natural ionized media has increased enormously during the last decade, when results from rocket and satellite borne wave experiments have become increasingly available. This large wealth of data has stimulated the interest of many plasma physicists in ...
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    Full-time Parents (1971)
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    Nature 231 (1971), S. 201-201 
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    Notes: [Auszug] SIR,-The letter of Charles F. Louis (Nature, 230, 605; 1971) raises an interesting point; we have an experiment of sorts. The current generation of young adults is the first in the history of Western culture of which a substantial fraction were raised without at least one full-time parent. Is it a ...
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    Reports and Publications (1971)
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    Nature 231 (1971), S. 203-204 
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    Notes: [Auszug] not included in the Monthly Books Supplement Great Britain and Ireland G. R. I. Technical Report No. 8: Grass Species and Varieties: Relationships Between Stage of Growth, Yield and Forage Quality. By J. O. Green, A. J. Corrall and R. A. Terry. Pp. 81. (Hurley, Maidenhead: The Grassland Research ...
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    100 Years Ago (1971)
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    Nature 231 (1971), S. 71-71 
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    Notes: [Auszug] THE PEOPLE'S UNIVERSITY A GIGANTIC and imposing educational scheme is about to be launched, which, whether it proves feasible or not, must attract the attention and enlist the sympathy of all well-wishers to the intellectual development and material welfare of the country, This is no less nn idea ...
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    Nuclear Power: Dangers of Proliferation (1971)
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    Nature 231 (1971), S. 72-73 
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    Notes: [Auszug] CONCERN for the spread of gas centrifuges brought together thirty-four people in London on May 7 to discuss their fears under the auspices of the J. D. Bernal Peace Library and the British Society for Social Responsibility in Science. They were worried chiefly about the consequences for ...
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    Wolfson Foundation: Priming the Pump (1971)
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    Nature 231 (1971), S. 75-75 
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    Notes: [Auszug] THE trustees of the Wolfson Foundation are plainly satisfied with the results of the first batch of grants for scientific research linked with industry. A measure of this success is their recent decision to sponsor a further series of projects. The first allocation, in November 1968, (see Nature, ...
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    Computer Society: Looking for Members (1971)
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    Nature 231 (1971), S. 74-75 
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    Notes: [Auszug] THE British Computer Society has launched a concerted effort to double its membership to about 30,000 in the next two or three years, and in this way to consolidate and strengthen its position as an effective central body in the computing profession. Much of the campaign is aimed at existing ...
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    No Cancer Remission for NIH (1971)
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    Nature 231 (1971), S. 76-77 
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    Notes: [Auszug] THE manoeuvrings to set up a separate cancer agency outside the National Institutes of Health have entered a delicate stage. Last week the House Appropriations committee approved a proposal to add $100 million to the budget of the National Cancer Institute, a key stratagem in the ...
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    Short Notes (1971)
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    Nature 231 (1971), S. 78-78 
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    Notes: [Auszug] Sickle Cell Anaemia LEGISLATION to set up a new institute of the National Institutes of Health devoted to sickle cell anaemia was proposed recently by Representative Ella T. Grasso. The disease, which affects one in every 400 to 500 blacks, kills half its victims before the age of 20. The ...
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    Geomagnetic Reversals: Matuyam Reassessed (1971)
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    Nature 231 (1971), S. 80-81 
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    Notes: [Auszug] IT has been evident for some time that although the principal features of the geomagnetic polarity-time scale are well established the finer details are likely to prove troublesome. Part of the reason for this is, of course, that potassium-argon dating-like any other experimental technique-has a ...
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    Marine Biology: Death in Massachusetts (1971)
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    Nature 231 (1971), S. 81-81 
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    Notes: [Auszug] THE news of mass mortalities of marine animals tends nowadays to be ammunition for the anti-pollution lobbies. But all too easily it is forgotten that such occurrences often happen quite naturally as a consequence of extremes of temperature, low salinity and the like. They often pass unrecorded, ...
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    Intricacies of Starting a Protein (1971)
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    Nature 231 (1971), S. 82-82 
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    Notes: [Auszug] IN Nature New Biology next Wednesday, Rudland, Whybrow and Clark suggest that a protein called initiation factor F2 plays a crucial part in ensuring that the transfer RNA carrying the amino-acid which initiates the synthesis of all Escherichia coli proteins goes to the correct site in a ribosome. ...
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    Continental Drift: Dissent on Split (1971)
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    Nature 231 (1971), S. 83-83 
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    Notes: [Auszug] IN a sharply worded and provocative note (Earth Planet. Sci. Lett., 10, 271 ; 1971) Wright takes issue with Larson and LaFontain who recently suggested (Earth Planet. Sci. Lett., 8, 341 ; 1971) on the basis of palaeomagnetic evidence that both the North Atlantic and South Atlantic began to open up ...
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    Carbonic Anhydrase may Regulate Photosynthesis (1971)
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    Nature 231 (1971), S. 83-83 
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    Notes: [Auszug] Now that the dust has, to a large extent, settled on the battles fought over the mechanisms of photosynthesis, the centre of interest seems to have shifted from carbon pathways and electron movements to the problems of how the process is regulated. In next week's Nature New Biology, D. Graham and ...
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    Freshwater Biology: Thermal Effects (1971)
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    Nature 231 (1971), S. 85-86 
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    Notes: [Auszug] REPRESENTATIVES from a wide range of institutions attended a symposium on freshwater biology and electrical power generation at the Central Electricity Research Laboratories (CERL), Leather-head, on April 22. The principal object of this symposium was to present recent CERL work in this field to a ...
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    Morphology of Polyethylene (1971)
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    Nature 231 (1971), S. 85-85 
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    Notes: [Auszug] PRUD'HOMME and Stein report in next Monday's Nature Physical Science that they have obtained conclusive evidence of the microspherulitic structure of polyethylene using a novel extension of the techniques of low angle light scattering to polymer films. Light scattering photographs were taken of ...
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    Drug Receptors and their Function (1971)
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    Nature 231 (1971), S. 91-96 
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    Notes: [Auszug] There have been various theories about the way in which drugs exert their effects. If recent progress in the isolation of receptors continues, it should soon be possible to look directly at the interaction between drugs and ...
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    Post-blastocyst Differentiation in vitro (1971)
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    Nature 231 (1971), S. 100-102 
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    Notes: [Auszug] A technique has been developed for growing mouse embryos in vitro to a stage at which post-blastocyst differentiation, including the beginnings of heart beat, can be ...
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    Synthesis of Superheavy Elements in the r -Process (1971)
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    Nature 231 (1971), S. 103-106 
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    Notes: [Auszug] Contrary to previous opinion, super-heavy elements can be produced in the r-process in explosive stellar events. Calculations are based on estimates of the fissionability of very neutron-rich superheavy nuclei using currently accepted mass-law parameters. Certain consequences for empirical cosmic ...
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    Super-rotation of Upper Atmosphere (1971)
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    Nature 231 (1971), S. 109-110 
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    Notes: [Auszug] This effect can be demonstrated with apparatus such as that outlined in Fig. 1. A gas is contained at a low pressure of the order of 10~2 torr in a cylindrical vessel, in which a small cylinder is suspended by a torsion fibre. If the cylinder and vessel wall are maintained at different temperatures ...
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    Biological Sciences: Radiocarbon Dating of Proto-Solutrean in Wales (1971)
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    Nature 231 (1971), S. 112-112 
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    Antitrachoma Activity of Rifamycin B and 8-O-Acetylrifamycin S (1971)
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    Nature 231 (1971), S. 115-116 
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    Notes: [Auszug] The T'ang strain of trachoma agent (TRIC/RC-PK/PK-2/ OT) was propagated in FL cells. Compound VIII, 8-O-acetylrifamycin S and rifamycin B10 was obtained from Ciba Ltd, Basle, and rifamycin SV and rifampicin1 from Gruppo Lepetit, Milano. The antibiotics were dissolved and, at concentrations ranging ...
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    Survival of Tumours after Immunization against Oestrogens (1971)
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    Nature 231 (1971), S. 118-119 
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    Notes: [Auszug] Fig. 1 The effects of active immunization against oestrogens on the onset of tumour growth (hatched area) and survival time (white area) in rats implanted with oestrogen-sensitive tumours. Female Wistar-Furth rats (about 60 days old) were used because they had been described as suitable hosts for ...
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    Identification of a Volatile Constituent formed by Homogenates of Acacia georginae exposed to Fluoride (1971)
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    Nature 231 (1971), S. 123-124 
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    Notes: [Auszug] Where possible, AnalaR reagents were used. Fluoroacetone was supplied by Aldrich Chemical Co. and AnalaR 2,4-dinitro-phenyl hydrazine was recrystallized. Inorganic fluoride (and any fluoride freed by acid) and organically combined F~ were estimated by Hall's method3. The gases from the homogenate, ...
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    Visual Contour Masking (1971)
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    Nature 231 (1971), S. 124-125 
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    Notes: [Auszug] This effect was confirmed on a group of twenty-two naive university students. The page with the parallel grid was removed from the book and affixed to a white card, so that the legend to the figure was not visible. The subjects were told that there was a figure behind the bars, and that they had to ...
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    Flying Ability of Archaeopteryx (1971)
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    Nature 231 (1971), S. 127-128 
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    Notes: [Auszug] Heptonstall, following Jerison5, supposed that Archaeopteryx weighed about 500 g. The wing span of Archaeopteryx was, however, only 58 cm, and arboreal birds of this size only weigh 200-250 g6. (Mammals of this body size also weigh about 200-250 g.) Only very heavily built birds, galliform or ...
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    Maltese Prehistory (1971)
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    Nature 231 (1971), S. 130-131 
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    Notes: [Auszug] THE great stone temples of Malta are among the most remarkable monuments of the prehistoric west Mediterranean, and indeed of Europe in general. Their grandeur, the great skill displayed in the transport of the huge stones and in their dressing, and the sophistication of the decorative art which ...
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    Ion Movements in Cells (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 131-132 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE publication of books on membrane function takes place with increasing frequency and there ought therefore to be some good reason for publishing a new, three volume analysis of the subject. The stated intention is to undertake a general survey of membrane function and to treat the subject both ...
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    Structure and Reaction (1971)
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    Nature 231 (1971), S. 133-133 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THIS large book contains the lectures presented to a summer school arranged "for graduates in chemistry and physics who have minimal backgrounds in materials science", people who are assumed to know little of crystal defects or of solid-state chemical reactions. To the materials scientist's jaded ...
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    British Diary (1971)
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    Nature 231 (1971), S. 135-136 
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    Notes: [Auszug] Monday, May 17 Celebrations to Mark the Centenary of the Foundation of the Institution of Electrical Engineers (three days, London). Constructivity and Quantization (5.30 p.m.) Professor C. Kilmister, British Society for the Philosophy of Science, in the Joint Staff Common Room, University ...
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    Keeping a Straight Bat (1971)
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    Nature 231 (1971), S. 2-3 
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    Notes: [Auszug] MRS MARGARET THATCHER, Minister for Education and Science in the British Government, succeeded in her appearance before the Select Committee on Science and Technology last week in saying hardly anything that mattered about the future organization of civil research in Britain. As on many previous ...
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    Select Committee: Worries about Research (1971)
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    Nature 231 (1971), S. 4-4 
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    Notes: [Auszug] THE Select Committee on Science and Technology heard evidence on the research councils this week from the Secretary of State for Education and Science, Mrs Margaret Thatcher. The committee was clearly anxious to find out to what extent the research council system was to be modified but it was ...
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    CAFD: Tiger with Paper Teeth (1971)
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    Nature 231 (1971), S. 4-5 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE Council for Academic Freedom and Democracy (CAFD) made public earlier this week the findings of its most recent commission of inquiry (Craigie College of Education, available from the National Council for Civil Liberties, 15p). The report of the commission, which deals with the case of a ...
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    Academy Squirms a Little in Sudden Spotlight (1971)
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    Nature 231 (1971), S. 6-8 
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    Notes: [Auszug] THE annual meeting of the National Academy of Sciences is usually a quiet affair of interest only to the new members who are elected and the hopefuls who have to wait another year. This year's meeting, held last week in Washington, was different. One member resigned, and three threatened to do so ...
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    NSF: RANN Cut Down to Size (1971)
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    Nature 231 (1971), S. 8-9 
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    Notes: [Auszug] THE National Science Foundation has been only partly successful in its gambit of swinging nearly $100 million worth of extra funds through Congress under a newfangled and variegated umbrella called RANN. Last week, the Science and Astronautics committee of the House of Representatives told ...
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    Chemistry in Unfamiliar Places (1971)
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    Nature 231 (1971), S. 11-11 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SINCE the first lunar samples were returned by the flight of Apollo 11, it has been clear that the microchemistry of the lunar surface would turn out to be well worth the trouble of mastering the intricate techniques now being deployed in dozens of laboratories. The report on page 29 of this issue ...
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    Maffei 1, and Companions (1971)
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    Nature 231 (1971), S. 12-12 
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    Notes: [Auszug] THE hitherto unknown galaxy in the Local Group that earlier this year it was surmised must be the origin of the infrared object Maffei 1 may have some near neighbours in space. One of these is Maffei 2, a second infrared object 40" from Maffei 1 the appearance of which at radio frequencies is ...
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    Elephants: Musth and Mating (1971)
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    Nature 231 (1971), S. 14-14 
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    Notes: [Auszug] MATING is a considerable problem for male elephants, partly because of their great weight, which has led to certain structural modifications involving loss of flexibility of the body, and partly because the females live in herds from which bulls are normally excluded. In a recent study of the ...
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    Where the Crab Pulsar Went Wrong in 1969 and 1970 (1971)
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    Nature 231 (1971), S. 15-15 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ASTRONOMERS with a taste for nostalgia will remember how pulsars were going to become a new time standard that would rival atomic clocks and be the basis for a new navigation system. A great deal of water has flowed under the bridge since then. Several pulsars are now known to be measurably slowing ...
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    Metabolic Modification of Collagen (1971)
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    Nature 231 (1971), S. 16-16 
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    Notes: [Auszug] THE principal biological function of collagen is to transmit forces or to provide a structural container for organs. It is frequently considered to be meta-bolically inert. That this is not so is demonstrated by two articles in next Wednesday's Nature New Biology. Spiro, Lucas and Rudall of Harvard ...
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    Chromatin: Nuclear RNA Nobbled (1971)
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    Nature 231 (1971), S. 18-18 
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    Notes: [Auszug] THE silence concerning the nature of Bonner's chromatin RNA has now become nothing less than deafening. It was alleged to be a defined species, some forty nucleotides in length, more than a quarter of which were dihydro-uracil. It was present in plant and animal nuclei, showed a very high degree of ...
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    Biochemical Research in Schizophrenia (1971)
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    Nature 231 (1971), S. 22-28 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Schizophrenia is still a loosely defined and little understood group of diseases. But a great deal of information is accumulating about the biochemical abnormalities which might be characteristic of so-called ...
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    Carbon Chemistry of the Lunar Surface (1971)
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    Nature 231 (1971), S. 29-31 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Indigenous CH4 and the chemical reaction product CD4 released by deuterated acid etch of Apollo 11 and 12 lunar samples have been examined by gas chromatography. Possible origins for the CH4 include solar wind synthesis and a small primordial contribution. The ...
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    Electron Spin Resonance Studies of the Solubilization of Nitroxide Spin Probes by Micellar Solutions (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 38-39 
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    Notes: [Auszug] I intend here to draw attention to the fact that the interpretation of the ESR spectra of spin probes in micellar and related membrane-like systems is more complicated than has been assumed so far. The reasons for this are as follows. (1) The distribution of the spin probe between micellar ...
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    Hydrographic Observations on the Red Sea Brines indicate a Marked Increase in Temperature (1971)
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    Nature 231 (1971), S. 37-38 
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    Notes: [Auszug] During February 1971, R/V Chain revisited the brine area. Although it will be several months before the chemical data are complete, the hydrographic data gathered are of immediate interest. The most unusual observation is that the temperature of the Atlantis II brine has risen 2.7 C from 56.5 C to ...
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    Prebiotic Formation of Cytidine Nucleotides (1971)
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    Nature 231 (1971), S. 42-43 
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    Notes: [Auszug] Sanchez and Orgel7 have developed a method in which O2 : 2'-cyclocytidine and O2 : 2' cyclouridine, among others, are formed in high yield in potentially prebiotic conditions. Various cyclonucleoside phosphates and their polymers can be obtained by rearrangements of the mono and ...
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    Induction of Cellular DNA Synthesis in Human Leucocytes by Epstein–Barr Virus (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 46-47 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Perhaps more direct evidence for the intimate association of EBV with BL and NPC was provided by a recent report6 which claims the detection of viral DNA in tumour biopsies. This finding, however, does not eliminate the possibility that these tumour cells became secondarily infected with this ...
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    Sex Difference in the Number of Adipose Cells from Genetically Obese Rats (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 50-50 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Genetically obese rats (fafa)8 2.5 months old and their litter mates, fed with my control diet, were used. Whole perigenital fat pads were weighed and treated as previously described6: portions of histological sections on slides, projected on the ground glass of a Projectina microscope, were ...
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    Do Artificial Sweeteners ingested in Pregnancy affect the Offspring? (1971)
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    Nature 231 (1971), S. 53-53 
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    Notes: [Auszug] Questionnaires were returned by 975 women in the State of Massachusetts who had given birth to normal children and by members of associations for the mentally retarded who had given birth to a total of 247 mentally retarded children. Although our "normal" sample contains more young mothers than the ...
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    Birth Order of Psychiatric Patients (1971)
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    Nature 231 (1971), S. 57-57 
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    Notes: [Auszug] Further analysis of this data1 indicates that their control group of non-schizophrenic patients differed from the normal population in birth order distribution. Table 1 shows the number of patients in the first, second, intermediate, penultimate and last ordinal positions from families of five or ...
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    Basic Rectangle of the Mandible in the Hominoidae (1971)
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    Nature 231 (1971), S. 60-60 
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    Notes: [Auszug] So far as I am aware, neither I nor anybody else has attempted to use evidence based on the basic rectangle of the mandible, for taxonomic purposes, beyond the limits of the superfamily- the Hominoidae. Kinzey's attempt therefore to introduce evidence from representatives of other families of the ...
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    Who will Call the Tune ? (1971)
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    Nature 231 (1971), S. 61-61 
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    Notes: [Auszug] THIS is a pioneer book, important enough to have been written in simpler English for a Wider audience. It consists of two lengthy comments by Professor Douglas Hague, of Manchester University, and Professor Bruce Smith, of Columbia University, and of the working papers of a Ditchley conference, ...
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    From the Lunar Surface (1971)
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    Nature 231 (1971), S. 62-63 
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    Notes: [Auszug] SELENOGRAPHERS who have kept in touch with the results of the successful Luna, Ranger and Surveyor programmes of lunar exploration will not find much new in The Lunar Rocks. Nor will those who have been concerned with the findings of selenologists who have studied rocks and soil brought back from ...
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    Metabolism and Cancer (1971)
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    Nature 231 (1971), S. 64-64 
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    Notes: [Auszug] THIS book contains the full papers presented to the Miami Winter Symposia during January 19-23, 1970, and is the first of a continuing series under the title "Miami Winter Symposia". Associated with the symposia is a lecture named in honour of the distinguished biochemist, Professor Feodor Lynen. ...
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    Indian Brain Drain (1971)
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    Nature 231 (1971), S. 65-65 
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    Notes: [Auszug] SIR,-Much has been written about the brain drain from the developing (and, lately, from the developed countries). As an Indian with a PhD in chemistry who has immigrated to the USA, I have a vested interest in this problem. I am sure that my feelings are shared by many like me. As a product of the ...
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    Announcements (1971)
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    Nature 231 (1971), S. 67-67 
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    Notes: [Auszug] University News Professor K. Keohane, Chelsea College of Science and Technology, has been appointed Royal Society Leverhulme visiting professor to the Universidade Federate da Bahia, Brazil. Professor R. I. Mateles, Massachusetts Institute of Technology, has been appointed professor of applied ...
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