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  • Nature Publishing Group  (44,208)
  • 1980-1984  (17,607)
  • 1965-1969  (26,601)
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  • 1
    Electronic Resource
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    [s.l.] : Nature Publishing Group
    Nature 214 (1967), S. 1164-1164 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We shall throw some light on the mystery of the abundance of prime numbers in these series. When an arbitrary number is divided by a prime number g, the remainder can have any one of q values from 0 to (q I). In series of the kind considered here, however, one finds only 1/2(q+ 1) different ...
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  • 2
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    Nature 214 (1967), S. 1164-1164 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The speech signals used consisted of readings (male voice) from various forms of literature, including newspapers and technical matter, and the aim was to assess communication, rather than intelligibility of single words or sounds. The speech was recorded on tape and passed through a filter of ...
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  • 3
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    Nature 214 (1967), S. 1166-1166 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE proceedings of a symposium on the immunological properties of protein hormones held in Rome three years ago have now been published. The impetus for the marked progress which has been made in this field in recent years was provided by the need for reliable and practicable methods for the ...
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  • 4
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    Nature 214 (1967), S. 1166-1167 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THIS book presents the papers given and summarizes the ensuing discussions at a Ciba Foundation Symposium on Caste and Race held in 1966. Without doubt it is of considerable interest to social scientists, including anthropologists, sociologists, social psychologists, students of social change and ...
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  • 5
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    Nature 214 (1967), S. 1167-1167 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT is twenty-two years since the second edition of Vertebrate Paleontology. During that time there have been spectacular advances in the palaeontology of almost all vertebrate classes. Many new fossils have been found and the descriptions of these, together with re-evaluations of many others, have ...
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  • 6
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    Nature 214 (1967), S. 1167-1168 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] FOR several years Dr. Hirayama has been collecting and classifying the published ultra-violet and visible absorption data of organic compounds for inclusion in a twenty-five volume Comprehensive System of Organic Chemistry, which was published in Tokyo. He has now brought together in one volume the ...
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  • 7
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    [s.l.] : Nature Publishing Group
    Nature 214 (1967), S. 1169-1169 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THESE two volumes comprise papers, or abstracts of papers, read at the Seventh International Space Science Symposium in May 1966. The first volume incorporates papers on interactions between the neutral and ionized parts of the atmosphere, together with some on the latest significant result on the ...
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  • 8
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    Nature 214 (1967), S. 1170-1170 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THIS is a valuable compilation of references, including those from the patent literature, to organo-transition-metal compounds described from 1937 to 1964 inclusive. The mono- and di-metallic compounds considered are those with organic groups with at least one carbon-metal ff-bond and those with ...
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  • 9
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    Nature 214 (1967), S. 1169-1169 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE recent burst of publication of books on lasers is added to by this English translation of the original Czech edition first published in 1964. Although described by the publishers as being intended for the specialist working with lasers or their applications, the contents and presentation are ...
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  • 10
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    Nature 214 (1967), S. 1171-1171 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] No one could have predicted, before he reached his mid-thirties, that J. J. Audubon would become America's most famous bird artist. He was hopelessly spoiled as a child, and in his twenties and early thirties lost all his own money, and much of other people's, in one impractical business scheme ...
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  • 11
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    Nature 214 (1967), S. 1172-1172 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Throughout the communication entitled "Response of Pines irradiated with Lethal and Sublethal Doses of y-Radiation" by J. P. OKunewick and S. E. Herrick (Nature, 214, 514; 1967) the unit "rad" should be changed to "r." (roentgen). The sixth sentence of the third paragraph should read: "One of these ...
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  • 12
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    Nature 214 (1967), S. 1020-1021 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Herberg and Watkins showed that repeated bursts of sub-cortical electrical stimulation in rats will elicit a convulsion early in a given session, but subsequent bursts of electrical stimulation will not cause convulsions until 1 or 2 h have elapsed after that initial convulsion. They did not ...
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  • 13
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    Nature 214 (1967), S. 1021-1022 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Wilkie et al.6, then Shaw et al.7, have reported that delayed-type skin reactions to homologous encephalitogenic proteins may be elicited in guinea-pigs during induction of acute EAE. The reactions resemble tuberculin reactions and occur maximally 9-13 days after the original sensitization. The ...
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  • 14
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    Nature 214 (1967), S. 1024-1025 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In 1965 and 1966 we used potted vines of Vitis vinifera L. to determine the effects of a kinin and other types of plant regulators on translocation patterns of elaborated food materials. The normal translocation pattern of assimilate of young grape shoots shows that most of the shoot tip is ...
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  • 15
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    Nature 214 (1967), S. 1028-1029 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] P. cruentum (Vischer strain) was obtained in axenic condition from Dr F. T. Haxo (Scripps Institute of Oceanography, La Jolla, California) and was grown photoautotrophically in mass culture7. Algal acetone powders8 and their phosphate buffer (0.05 molar, pH 7.5) extracts (from 16 h extraction at ...
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  • 16
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    Nature 214 (1967), S. 1029-1030 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1. EFFECT OF GROWTH REGULATORS ON CALLUS INDUCTION 24D Kinetin (μmoles/1.) μmoles/1.) 0 0-23 0-46 4-6 46 0 0-45 2-25 4-5 22-5 45 225 ± + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + ± ± + IAA (μmoles/1.) 0 5-7 28-5 57 ...
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  • 17
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    Nature 214 (1967), S. 1032-1034 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The pupae of Antheraea polyphemus (Lepidoptera) used in these experiments were grown on maple trees in Connecticut during the summer of 1965, and were collected soon after pupation (between August 15 and September 15). Immediately after collection, all pupae were exposed for 21 days to a ...
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  • 18
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    Nature 214 (1967), S. 1034-1034 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] During the past few years this mechanism has been studied in several marine amphipods of the intertidal region (Gammarus duebeni, G. oceanicus, G. setosus and Marinogammarus obtusatus) both in the field and in the laboratory. More detailed accounts of the reproductive cycles and their relationship ...
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  • 19
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    Nature 214 (1967), S. 1016-1017 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The purpose of this note is to examine various suggestions concerning the mechanism of the loss of photo-repair ability and to indicate the lines along which a solution is more likely to be attained. The two essential components of the system are (A) the photorepair mechanism which is made up of ...
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  • 20
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    Nature 214 (1967), S. 1042-1043 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Polymorphism of this protein has not been described in man, but we recently found several members, in a family of Flemish stock (pedigree on Fig. 1), showing an electrophoretic split of this protein. Routine separation of fresh serum of the affected individuals (agar gel electrophoresis, with 1 per ...
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  • 21
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    Nature 214 (1967), S. 1044-1045 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The analytical methods now applied to the assay of plasma steroids utilize either fluorimetry2, gas chromato-graphy3, or the "double isotope" technique4. They are capable of assaying quantitatively progesterone, testosterone and oestrogens at levels as low as about 0.02 mg in 50 ml. of plasma after ...
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  • 22
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    Nature 214 (1967), S. 1049-1050 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] For this purpose disks were cut from Jerusalem artichoke tubers and chicory roots and treated with 10-5 molar 2 : 4-dichlorophenoxyacetic acid (2 : 4-D) or with water for 3 days at 25 C. The activity of the extracted hydrolytic enzymes was assessed for both treatments and compared with that ...
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  • 23
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    Nature 214 (1967), S. 1052-1053 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] All sera were inactivated at 56 C for 30 min before further treatment. Separation into the 19S, 7S, 4.5S size classes (and an intermediate class, 10S) was accomplished by filtration on Sephadex gel at 4 C as described by Flodin and Killander4, using 17-20 ml. serum volumes on Sephadex G-200 columns ...
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  • 24
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    Nature 214 (1967), S. 1054-1056 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the present experiment, a multi-object visual discrimination task tested Oxbury?s prediction that increasing the number of distracting stimuli in problems not requiring a delayed response would nevertheless produce a progressive learning impairment in the frontal animal. Because frontal lesions ...
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  • 25
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    Nature 214 (1967), S. 1057-1058 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE history of experimental cancer research up to now has tended to be that of tumours in experimental animals. The reason is clear; the accessibility of human material to the average research worker is limited and the handling of this material has presented great difficulties; and indeed it does ...
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  • 26
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    Nature 214 (1967), S. 1038-1040 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] Nucleic acid from yeast (Anachemia) was mixed in water in various concentrations (10, 1, 0.5, 0.1, mg/ml.) at room temperature and filtered on Whatman No. 1 filter paper. A drop of the solution was then placed on a microscope slide and observed without a cover glass. Coacervates 5 to 20µ in ...
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  • 27
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    Nature 214 (1967), S. 1045-1046 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have repeated this experiment, using the same experimental conditions and similar methods of estimating calcium, namely flame photometry and titration with ethylenediamine tetraacetic acid (EDTA) with murexide-as indicator2. These procedures yielded values for non-exchangeable calcium which were ...
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    Nature 214 (1967), S. 1063-1063 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] TOM SIDNEY MOORE was born in Islington in 1881 and attended the local church school, from whence he gained a scholarship to the East London College. He derived intense pleasure from his undergraduate training and regarded this period as the real start of his mind?s development. By the age of ...
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    Nature 214 (1967), S. 1064-1064 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The price of The Culture of Vertebrate Embryos, reviewed in Nature, 214, 855; 1967, is 60s. and not 112s. as ...
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    Nature 214 (1967), S. 1065-1065 
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    Notes: [Auszug] APPLICATIONS are invited for the following appointments on or before the dates mentioned : JUNIOR FELLOW IN ORGANIC CHEMISTRY?The Registrar, University Senate House, Bristol, 2 (June 7). DEMONSTRATOR (holding, or expecting to obtain, a good honours degree in chemistry or biochemistry, and ...
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    Nature 214 (1967), S. 1065-1065 
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    Notes: [Auszug] (Meetings marked with an asterisk are open to the public) Tuesday, June 6 CONCRETE SOCIETY, PRESTRESSED CONCRETE COMMITTEE (at Church House, Great Smith Street, Westminster, London, S.W.I), at 9.15 a.m.? Meeting on ?The Design of Prestressed Concrete Bridge Structures?, opened by Mr Stephen ...
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    Nature 214 (1967), S. 960-960 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE National Physical Laboratory seems to have survived the constitutional re-shuffle which has occurred since the advent of the Ministry of Technology. Theannual report for 1966 (HMSO, £1.5) gives details of exactly what has happened, which amounts in the first place to the creation of a ...
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    Nature 214 (1967), S. 961-961 
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    Source: Nature Archives 1869 - 2009
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    Notes: [Auszug] THE unit on research policy at the University of Lund has just published a bibliography of 415 items culled from the literature of 40 countries and concerned with problems of the migration of scientists and technologists. The document, Brain Drain and Brain Gain, is intended ?as a source of ...
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    Nature 214 (1967), S. 962-962 
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    Notes: [Auszug] IF dissatisfaction with past performance were any guarantee of improvement, advanced British industries would have little to worry about. The latest tocome under critical examination is the low temperature industry in Britain, which is concerned with such things as superconducting magnets, ...
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    Nature 214 (1967), S. 1062-1062 
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    Notes: [Auszug] FEKROELECTRICITY is a rapidly advancing subject. Every year new ferroelectrics are discovered and new types of ferroelectric behaviour shown to exist, either in the newly discovered ferroelectrics or in the old and well-known ones. In these circumstances the publishing from time to time either of ...
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    Nature 214 (1967), S. 1064-1064 
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    Notes: [Auszug] The communication entitled ?New Vasoconstrictor, Bovine Peptide-B, released during Blood Coagulation? by Robert W. Colman, Albert J. Osbahr and Russell E.Morris, jun., which appears on page 1040 of this issue is incomplete and should be disregarded. The complete communication will appear in a later ...
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    Nature 214 (1967), S. 1064-1064 
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    Notes: [Auszug] In the article entitled ?Metabolic Pathways of Red Blood Cell Copper in Normal Humans and in Wilson?s Disease? (Nature, 213, 775; 1967) the following changes should be made: line 53 (l.h.s.) p. 776 to ?and a normal rate of incorporation of copper-64 . . .?; line 2 (l.h.s.) p. 777 to ?counting it in ...
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    Nature 214 (1967), S. 1066-1066 
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    Notes: [Auszug] (not included in the monthly Books Supplement) Great Britain and Ireland The Ciba Foundation for the Promotion of International Co-operation in Medical and Chemical Research, 1966 Report. Pp. 70. (London: The Ciba Foundation, 1967.) [203 B.B.C. Engineering Monograph No. 66: V.H.F. Aerial Gain ...
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    Nature 214 (1967), S. 957-959 
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    Notes: [Auszug] EUROPEAN views about the phenomenon unfortunately called the technology gap are rapidly becoming more rational, and the meeting of the European Round Table in Turin last week will have helped a great deal. The address by Dr A. C.Copisarow, the substance of which appears on page 966, is one example ...
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    Nature 214 (1967), S. 959-959 
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    Notes: [Auszug] THE international conference under the general heading of ?Water for Peace? which has just ended in Washington has understandably been a little less dramatic and decisive than its sponsors may have hoped, but that does not mean that nothing has been accomplished. The origin of the occasion seems to ...
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    Nature 214 (1967), S. 961-961 
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    Notes: [Auszug] A CHALLENGING view of how technology may be able to transform the condition of Puerto Rico has been produced by a committee of the US National Research Council of the National Academy of Sciences and the National Academy of Engineering under Dr John C. Warner of the Carnegie Institute of ...
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    Nature 214 (1967), S. 961-962 
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    Notes: [Auszug] A CONTRACT for the development of library catalogues in machine readable form has been placed with the University of Newcastle upon Tyne by the Office for Scientific and Technical Information. The office is proposing to contribute £12,500 towards the cost of a two year project being ...
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    Nature 214 (1967), S. 962-963 
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    Notes: [Auszug] IT almost looks as if the conference of the National Association of Head Teachers which took place in Scarborough last week was an elaborate joke. The teachers, after all, are in charge of British state schools, and responsible for putting into practice the modestly radical proposals for ...
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    Nature 214 (1967), S. 963-963 
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    Notes: [Auszug] JAPAN has decided to join the current research programme of the OECD reactor at Halden in Norway. The reactor, which is under the control of the European Nuclear Energy Agency, is a boiling heavy water reactor used as a test facility by a large number of countries including Norway, Austria, ...
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    Nature 214 (1967), S. 965-965 
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    Notes: [Auszug] THE war between the Royal Society and the British Ministry of Defence over the proposed airfield on the island of Aldabra in the Indian Ocean has persuaded the Royal Society to take the unusual step of sending a delegation to the ministry to plead the case for the total preservation of the island. ...
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    Nature 214 (1967), S. 964-964 
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    Notes: [Auszug] THE Ministry of Technology seems to be relaxing its guidelines on grants to research associations. Already it has arranged to give the British Welding Research Association thirty shillings for every pound that the association canraise from its members instead of the usual pound for pound ...
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    Nature 214 (1967), S. 975-977 
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    Notes: [Auszug] People can be taught to control voluntarily their own alpha rhythms. This can be used to send messages in Morse code when an electroencephalogram pattern is used as part of a computer programme. Such procedures may help to explain the mechanisms by which the alpha rhythm is “blocked” or ...
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    Nature 214 (1967), S. 983-986 
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    Notes: [Auszug] A new method for differentiating between bacteria of different sizes in a single population is used to show that the rate of synthesis of RNA in a population of Escherichia coli varies linearly with the size of the ...
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    Nature 214 (1967), S. 869-869 
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    Notes: [Auszug] THE turnover of endogenous protein is known to be of great importance in the differentiation of micro-organisms. For one thing, it can provide raw material for the synthesis of enzymes and other proteins that will allow growth to continue in a changed environment. Then, by generating amino-acids in ...
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    Nature 214 (1967), S. 873-875 
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    Notes: [Auszug] A change from a cold to a warmer climate is known to have taken place in the Northern Hemisphere 11,000 years ago. The foraminiferal faunas of deep-sea cores obtained off the south coast of Western Australia reveal that postglacial warming also occurred at about this time in the Southern ...
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    Nature 214 (1967), S. 863-863 
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    Notes: [Auszug] THE committee set up by the Minister of Power to discuss research in the British steel industry has the heady prospect of knowing that its advice matters. One member of the committee is Dr H. M. Finniston, who will be vice-chairman in charge of research and development when the steel industry is ...
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    Nature 214 (1967), S. 863-863 
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    Notes: [Auszug] To say that Professor I.I. Rabi of Columbia University has become an institution is to do him an injustice. He is not at all like that. Even though he has been teaching for thirty-seven years at the university at which he graduated PhD, he has remained uncommonly free from pomp. His good works on ...
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    Nature 214 (1967), S. 865-865 
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    Notes: [Auszug] THE view that the success of the universities in Britain, the United States and Germany had inspired pressures from outside and particularly from governments was one of the themes of the Queen's Lecture delivered at the University of Belfast on May 23 by Sir Eric Ashby, Master of Clare College, ...
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    Nature 214 (1967), S. 866-867 
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    Notes: [Auszug] THE Board of Trade announced on May 17 new steps to make details of British patent specifications more readily available. These involve increasing the speed with which the patent abridgements are published. Abridgements, the main source of information for patent searchers, will in future be ...
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    Nature 214 (1967), S. 895-896 
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    Notes: [Auszug] Using a new method of measuring the degree of aggregation of planaria under homogeneous light conditions, it has been possible to show that planaria do indeed aggregate under these conditions and to distinguish certain differences between species in the degree of ...
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    Nature 214 (1967), S. 904-906 
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    Notes: [Auszug] The chemistry and preparation of hydroxyapatite, Ca10(PO4)6(OH)2, have been investigated extensively, partly because it is the prototype for the inorganic component of bones and teeth. Hydroxyapatite as normally prepared by precipitation from aqueous solutions, or by solid state reactions at about ...
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    Nature 214 (1967), S. 888-889 
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    Notes: [Auszug] The amount of water carried by a moving monolayer of stearyl alcohol is altered by addition of electrolytes and steroid hormones to the solution under the film. This is believed to be due to a change in the properties of water immediately adjacent to the ...
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    Nature 214 (1967), S. 882-885 
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    Notes: [Auszug] Blue-green algae can grow in hot springs at temperatures of 50°–75° C. In algae taken from hot springs in the Yellowstone National Park, photosynthesis has now been shown to be most efficient at the temperature of the ...
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    Notes: [Auszug] Murine sarcoma virus (Harvey) produces characteristic changes in cultures of C57BL mouse embryo cells. Some of the cells become spindle-shaped and stain vividly with acridine orange. The transformed cells continuously produce virus in vitro and give tumours on inoculation into adult C57BL mice. The ...
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    Nature 214 (1967), S. 899-900 
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    Notes: [Auszug] This communication reports some recent investigations of the helium line strengths in B stars of the Southern galactic clusters IC 2391 and IC 2602. These observations suggest that the strength of the He λ4471 line for main sequence stars of spectral types B3 and later is almost wholly dependent on ...
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    Nature 214 (1967), S. 903-904 
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    Notes: [Auszug] Inertial frames will be taken in "standard configuration-5; quantities measured in a centre-of-mass frame I0 will be given the suffix 0, and b( u)=[l -u2/c2]-112. (A) Ambiguities by arguing from the transverse Doppler effect. The mean occupation number of a radiation mode j is the same in the rest ...
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    Nature 214 (1967), S. 907-907 
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    Notes: [Auszug] Metzner's article appeared just after a study had been completed in this laboratory in which the diffusion coefficients of carbon dioxide and sulphur dioxide in aqueous solutions of carboxymethylcellulose (CMC) had been measured2,3. Unlike Metzner, we found no anomalous diffusion rates in the CMC ...
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    Nature 214 (1967), S. 906-907 
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    Notes: [Auszug] The ion, hydroxy-aquofo'sethylenediamine cobalt(III) [A] which is stable between PH 6 and 8 reacts with a-amino-acids and peptides to form complexes B as shown: Fig.1. Absorption spectrum for [Coen2(H2O)(OH)][N03]2 (A)\ ' , absorption spectrum of (A) and tris buffer (C). Both run at pH 7-3 in ...
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    Nature 214 (1967), S. 914-915 
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    Notes: [Auszug] When administered electrophoretically strychnine has complex actions on mammalian nerve cells. Renshaw cells are excited by concentrations which exceed those adequate to block postsynaptic inhibition; with higher concentrations the extracellularly recorded action potentials are reduced in amplitude ...
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    Nature 214 (1967), S. 913-914 
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    Notes: [Auszug] The heart of the non-hibernating homeotherm is normally at a constant temperature, but here we report experiments which indicate that, when isolated, such a heart adjusts to a cold environment in a manner somewhat similar to that of the intact heart of the poikilotherm2. Fig. 1. Heart ...
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    Nature 214 (1967), S. 919-920 
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    Notes: [Auszug] Melatonin was dissolved in propylene glycol or ethanol and further diluted with Ringer solution to give a concentration of 10-30 mg/ml. Controls in each experiment were given the same amount of organic diluent in Ringer solution. The toxicity of melatonin was studied in mice; doses up to 800 ...
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    Nature 214 (1967), S. 920-920 
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    Notes: [Auszug] It is known that, when aliphatic cyanides are metabolized in the animal body, hydrogen cyanide is split off, leading to an increase in the excretion of thiocyanates2. It was therefore thought desirable to investigate the excretion of thiocyanate in the urine of rats rendered lathyritic by the ...
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    Nature 214 (1967), S. 928-929 
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    Notes: [Auszug] We have tried to determine whether or not the DNA-containing bodies in A. discoides are concerned with the hereditary determinants attributed to the cytoplasm of this species. Separate cultures of cells of each of the original strains of A. proteus (TIP) and A. discoides (T1D)1,6, of the ...
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    Nature 214 (1967), S. 927-928 
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    Notes: [Auszug] Table 1 shows the viruses used, the method of propagation and means of assay. These viruses were precipitated from suspension in balanced salt solutions by mixing with PEG at pH. 7.4, the amount of viral activity removed from suspension being proportional to the amount of PEG in the mixture up to ...
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    Nature 214 (1967), S. 935-936 
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    Notes: [Auszug] In the erythrocytes of untreated animals, trophozoites of P. berghei and P. cynomolgi showed peripherally distributed malarial pigment, sometimes associated with partially digested haemoglobin, enclosed in vesicles bounded by membranes. Thirty to thirty-five minutes after the administration of the ...
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    Nature 214 (1967), S. 941-942 
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    Notes: [Auszug] These observations support the proposition that senescence may be a function of hormonal status, and thus any manipulations which vary the hormone content of leaf tissue may effectively alter the rate of senescence. It has been demonstrated that many of the growth retardants function by impairing ...
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    Nature 214 (1967), S. 943-945 
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    Notes: [Auszug] While the effects on the leaves are obvious and have received considerable attention, the grafting experiments of Brown, Holmes and Tiffin8 showed that in races of soybean resistant and susceptible to chlorosis the root-stock, and not the shoot, determined whether or not the species was ...
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    Nature 214 (1967), S. 947-948 
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    Notes: [Auszug] Christensen1 examined theoretically the problem of an elastohydrodynamic film between approaching cylinders, in some earlier work in this department. He predicted that the fluid film pressures could reach very high values, often in excess of the Hertzian maximum pressure of dry contact, and that ...
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    Nature 214 (1967), S. 950-950 
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    Notes: [Auszug] THIS book was originally published in Moscow in 1961 and contains a systematic treatment of the theory of jets in inviscid fluids. It has already been widely acclaimed as an important major work and will be familiar to many English language readers through an earlier translation published by the ...
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    Nature 214 (1967), S. 947-947 
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    Notes: [Auszug] The results were submitted to analysis of variance and the table of means is given in Table 1. As has previously been shown4,5, there was a significant difference between the mean ascending and descending thresholds, and between mean thresholds after exposure to 25 and 50 c/s. There was no ...
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    Nature 214 (1967), S. 951-951 
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    Notes: [Auszug] THIS is an admirable book, which gives a comprehensive account of the physics of electrical discharges in gases. Although meant for beginners in this field of research, the book will be invaluable to the research worker as well. Too many people in the important field of plasma physics do not know ...
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    Nature 214 (1967), S. 756-756 
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    Notes: [Auszug] THERE is a danger that several new university science departments will be unable to open their doors to a full quota of students unless more money is made available for furniture and equipment. At the University of Manchester Institute of Science and Technology, the bursar, Mr R. G. McComas, said ...
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    Nature 214 (1967), S. 757-757 
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    Notes: [Auszug] THE Civil Service Commissioners are clearly out to demolish the notion that recruitment to the Civil Service is dominated by arts graduates from Oxford and Cambridge. In their annual report for 1966 (HMSO, 6s.) they record cheerfully that for the first time applications from universities other than ...
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    Nature 214 (1967), S. 758-758 
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    Notes: [Auszug] ABOUT sixty scientists took part in the meeting about the effects of drugs on the mobilization of free fatty acids held under the auspices of the European Atherosclerosis Group at the Institute "Maria Negri", Milan, on January 7, 1967. After an introduction by Dr Garattini (Milan), dealing with the ...
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    Nature 214 (1967), S. 759-759 
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    Notes: [Auszug] THE information which determines the sequence of amino-acids in proteins is carried from the genetic material, DNA, by a messenger RNA to particles called ribosomes where the proteins are synthesized. The genetic code is the relationship of that segment of DNA, or that messenger RNA, to the protein ...
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    Nature 214 (1967), S. 755-755 
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    Notes: [Auszug] THE disease called scrapie, which affects sheep and goats, is clearly more than an unsolved puzzle. The article by Dr. T. Alper and her colleagues on page 764 adds further to the suggestions there have been in recent months that the infective agent, usually thought to be a virus, is not entirely ...
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    Notes: [Auszug] As the westward tide of scientists and engineers to North America becomes a torrent, employers in Britain are making increasingly strenuous efforts to reverse it. The task is now being tackled by a variety of employers, government departments and professional bodies, and some report encouraging ...
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    Nature 214 (1967), S. 761-761 
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    Notes: [Auszug] Select Committee MR ANTHONY WEDGWOOD BENN, Minister of Technology, last week became the first minister to give evidence to the Select Committee on Science and Technology. Judging by his experience, other ministers can relax; the committee's behaviour was almost defeiential. If members of the ...
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    Nature 214 (1967), S. 764-766 
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    Notes: [Auszug] Scrapie is a slowly developing disease of the nervous system. Experiments on the effects of ultra-violet irradiation of suspensions of infected mouse brain extracts confirm that the agent responsible for it does not depend on a nucleic acid for its ability to replicate. No evidence is obtained, ...
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    Nature 214 (1967), S. 772-776 
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    Notes: [Auszug] A mechanism is proposed to explain how cosmic rays and fast electrons in non-thermal radio sources originate. The theory develops from Fermi's suggestion that charged particles gain energy through successive encounters with moving magnetic fields. Considerations of the geometry of cosmic ...
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    Nature 214 (1967), S. 783-785 
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    Notes: [Auszug] The production of immunoglobulins is controlled by a combination of genes. It appears that most individuals carry genes for both types of immunoglobulin, Gm(a) and Gm(b). Whether or not these genes actually find expression in the phenotype, however, seems to depend on the action of regulatory genes ...
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    Nature 214 (1967), S. 790-792 
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    Notes: [Auszug] The number of breaks produced by X-rays In the polynucleotide chains of the DNA in murine leukaemia cells, the bacterium Micrococcus radiodurans and in Isolated DNA are approximately the same. The leukaemia cells have an efficient system for rejoining broken strands. The results also suggest that ...
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    Nature 214 (1967), S. 794-796 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The possible space groups are C2cm, Cmcm and Cmc21; only in Cmc2l can the silicon-oxygen tetrahedra be acconu modated in a reasonable manner, and accordingly this space group was chosen. The cell contents are Na8Si12O28 Three-dimensional data were measured for a small, un-twinned crystal on a ...
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    Nature 214 (1967), S. 796-797 
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    Notes: [Auszug] I wish to point out that such a simple interpretation is not valid. To demonstrate this it is sufficient to prove that hysteresis loops of the kind shown in Fig. 1 may also be obtained with Newtonian fluids (which, by definition, are not thixotropic). Furthermore, if the cycles are repeated the ...
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    Nature 214 (1967), S. 810-811 
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    Notes: [Auszug] We suggested earlier that loss of mobility of an R-factor results from loss of its transfer factor1. This hypothesis was confirmed with R-factors for ampicillin and for streptomycin-sulphonamide resistance which had lost their mobility during transfer to Salmonella typhimurium phage-type 36 (= type ...
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    Nature 214 (1967), S. 800-801 
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    Notes: [Auszug] Sprague-Dawley rats were injected intraperitoneally with sterile ?Arlacel-A? (mannide-mono-oleate); for the in vitro experiments the cells were harvested 2 days later by injecting sterile Hanks solution1 intraperitoneally and withdrawing the fluid. The cells were collected by centrifugation and ...
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    Nature 214 (1967), S. 814-815 
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    Notes: [Auszug] Livers were obtained by the Tissue Bank of the Royal Marsden Hospital and were cultured by the method described by Zuckerman, Tsiquaye and Fulton4. Purified crystalline fractions of aflatoxin B1 G1 and G2 were dissolved in dimethyl formamide and immediately diluted in the liver growth medium. A ...
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    Nature 214 (1967), S. 809-809 
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    Notes: [Auszug] The mites, Harpyrhynchus brevis, and their eggs were obtained from chipping sparrows (Spizella passerina) from the University of California, Hopland Field Station, Mendocino County, California. Eggs of H. brevis are oviposited singly, each attached by a short stalk to the skin of the bird in the ...
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    Nature 214 (1967), S. 814-815 
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    Notes: [Auszug] The aerial roots of Ficus bengalensis L. collected from different places were washed in running tap water and cut into 2 cm sections. Later, their surface was sterilized by shaking with 1/1,000 mercuric chloride for 2 min and rectified spirit for 1 min. The cut sections were afterwards washed in ...
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    Nature 214 (1967), S. 818-818 
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    Notes: [Auszug] Penicillin, even in large doses, freed the animals from symptoms while the treatment was in progress, but could not cure them. Streptomycin -sulpha had a somewhat better effect, but as soon as the treatment had been concluded the symptoms returned and the animals had to be killed. Tetracycline was ...
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    Nature 214 (1967), S. 819-820 
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    Notes: [Auszug] Little is known concerning the biological residence time of antimony. Thirty-eight days is given as a biological half-life of antimony in the liver1, but this is derived from indirect data and certainly does not represent a true long term value. We have recently adopted a sensitive neutron ...
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    Nature 214 (1967), S. 824-825 
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    Notes: [Auszug] We have developed a 1g sedimentation system which makes use of a batch operation. This offers flexibility with respect to control of sedimentation time and scale of operation and makes it possible to collect a large number of fractions. With the apparatus shown in Fig. 1 substantial improvement in ...
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    Nature 214 (1967), S. 829-830 
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    Notes: [Auszug] The maximum number of oocysts passed in the faeces for each oocyst fed to a bird (reproductive potential) suggests that a third schizont stage must be present. Brackett and Bliznick9 obtained a maximum experimental reproductive potential for E. acervulina of 72,000 and we have obtained a value of ...
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    Nature 214 (1967), S. 826-827 
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    Notes: [Auszug] Fig. 1. Results of implant experiments. For explanation see text. According to Gasseling and Saunders3, development of the limb bud unfolds when its whole ectoderm, except the apical ridge, is removed; this finding has been interpreted as convincing evidence of an outgrowth inductor activity ...
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    Nature 214 (1967), S. 831-832 
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    Notes: [Auszug] Ten adult cats were anaesthetized with pentobarbitone and then perfused with isotonic sodium sulphate followed by 10 per cent neutral formalin. The brains were then removed and stored in 10 per cent neutral formalin at 4 C for 4 h and then in 20 per cent ethanol at 4 C. Serial frozen sections were ...
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