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  • Nature Publishing Group  (3.839)
  • American Institute of Physics (AIP)
  • Springer Science + Business Media
  • 1995-1999
  • 1980-1984
  • 1975-1979  (3.839)
  • 1975  (3.839)
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  • 1995-1999
  • 1980-1984
  • 1975-1979  (3.839)
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  • 1
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    First fossil records of cephalopod statoliths (1975)
    Nature Publishing Group
    In:  Nature, 257 (5525). pp. 380-381.
    Details
    Publikationsdatum: 2016-11-15
    Beschreibung: THE class Cephalopoda is represented by over 10,000 fossil species and about 1,000 living species. Almost the entire fossil record so far described consists of external or internal calcareous shells of the Ammonoidea, the Nautiloidea and some members of the Coleoidea. The subclass Coleoidea includes all but three (Nautilus spp.) of the living species of cephalopods, and is represented in the fossil record largely by the order Belemnitida which is important from the early Jurassic to the Eocene. Another coleoid order, the Sepioidea, including the living Sepia and Spirula have internal calcareous shells, and have left traces from the Upper Jurassic (Voltzia) to the present. The three remaining coleoid orders, the Teuthoidea, the Vampyromorpha and the Octopodida include all the remaining living cephalopods, comprising 29 teuthoid or squid families, one vampyromorph family and 12 octopod families.
    Materialart: Article , PeerReviewed
    Format: text
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  • 2
    Digitale Medien
    Digitale Medien
    A hundred years ago (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 398-398 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE words of Mr Disraeli on Monday night with regard to University Reform are also very cheering to those who wish to see some decided action taken towards the thorough reform of our Universities. Mr Disraeli's words were very strong, so strong indeed as to amount to an assurance that Government ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253398b0
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  • 3
    Digitale Medien
    Digitale Medien
    Recent advances in electrical recording from the human brain (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 401-407 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] New techniques for recording evoked potentials to sensory stimulation have led to applications with both theoretical and practical implications. Evoked potentials can be used as a diagnostic tool in some pathological conditions, as well as shedding light on the mechanisms by which sensory ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253401a0
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  • 4
    Digitale Medien
    Digitale Medien
    Spectra of the Jupiter radio bursts (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 415-417 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Like the solar radio bursts, the dynamic spectra provide a convenient basis for classification, and the existence of at least two classes, the L bursts with a time scale of seconds and the S bursts with a time scale of milliseconds, has been recognised by earlier observers3'4. But with the better ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253415a0
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  • 5
    Digitale Medien
    Digitale Medien
    Duration of the Kuroko mineralisation episode (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 428-429 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Most of the results have been obtained from red ferruginous chert, which commonly overlies the Koroko ore in beds 1-1 Om thick. Chert deposition seems to have been the last stage in the Kuroko mineralisation process7. The chert consists of quartz (diameter 10-600 jam) and very fine grained ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253428a0
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  • 6
    Digitale Medien
    Digitale Medien
    Deglaciation of the Labrador continental shelf (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 429-431 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] More than 20% of the Hamilton Bank area is topographically rough (bottom type I, Fig. 1) and has a local relief of 10-30 m (Fig. 2c, d). Side-scan sonar representations of this irregular surface are characterised by mottles; bathy-metric charts5 show numerous roughly circular, closed depressions ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253429a0
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  • 7
    Digitale Medien
    Digitale Medien
    A model illustrating the importance of timing in the regulation of breathing (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 440-442 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] (1) In the cat the afferent impulses from chemoreceptors are grouped in bursts the peaks of which correspond in time to the middle of the rising phase of the oscillations of carotid arterial PCO^ (refs 3 and 4); peak afferent discharge should thus be related to mid-expiration, the two events being ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253440a0
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  • 8
    Digitale Medien
    Digitale Medien
    Re-establishment of functional connections by regenerating central adrenergic and cholinergic axons (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 446-448 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] With the fluorescence histochemical technique the remarkable regenerative capacity of adult central mono-amine neurones is also revealed when lesioned noradrenergic neurones are allowed to 'reinnervate' a transplant of peripheral tissue placed in the brain or spinal cord2'3. In this experimental ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253446a0
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  • 9
    Digitale Medien
    Digitale Medien
    Lack of permeability of mouse placenta to maternal and foetal cells (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 453-455 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] In the mouse, information exists only on the passage of blood cells from mother to foetus11"16. Both radioactive labelling11'15, and cytogenetic markers12"14'16, have been used to differentiate between foetal and maternal cells. The data are, however, inconsistent11"16, probably resulting from the ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253453b0
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  • 10
    Digitale Medien
    Digitale Medien
    A simple cytochemical technique for demonstration of DNA in cells infected with mycoplasmas and viruses (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 461-462 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] We have investigated the use of DAPI in tissue culture systems and have found that it offers a very simple and sensitive procedure for detecting mycoplasma contamination. Mycoplasmas are a major source of contamination of many cell lines carried in the laboratory, and there are many techniques ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253461a0
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  • 11
    Digitale Medien
    Digitale Medien
    Possible role of prostaglandin F 2α in mediating effect of prolactin on RNA synthesis in mammary gland explants of mice (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 466-467 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Table 1 Effect of various combinations of prolactin, PGF2e, PGEX, PGA2 and indomethacin on RNA synthesis in mouse mammary gland explants 3H-uridine incorporation into RNA (d.p.m. per ug RNA) Agent added PGF2a PGEx PGA2 Indomethacin Control 216±18 193±16 198±23275 ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253466a0
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  • 12
    Digitale Medien
    Digitale Medien
    Concanavalin A cap formation on polymorphonuclear leukocytes of normal and beige (Chediak-Higashi) mice (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 471-473 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Table 1 Distribution of FITC-con A on PMN from normal and beige (CH) mice Normal CH Line Preincubation Postincubation (%) (%) Random Capped Patchy Random Capped Patchy 1 Buffer None 62 11 27 33 44 23 2 Colchicine (10-6M) None 23 55 22 32 50 19 3 Lumicolchicine (106M) None 73 11 16 _ _ - ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253471a0
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  • 13
    Digitale Medien
    Digitale Medien
    High affinity uptake of neurotransmitter amino acids (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 481-481 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] LEVI and Raiteri1 have concluded that their results on the uptake and release of 3H-GABA by rat brain synaptosomes indicate that homoexchange is a major mechanism by which radioactive GABA enters synaptosomes when low substrate concentrations are used. They therefore question the effectiveness of ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253481a0
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  • 14
    Digitale Medien
    Digitale Medien
    Sunspot cycle periodicities (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 482-482 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE Maximum Entropy Spectral Analysis technique of Burg (unpublished) and Cohen and Lintz1 has led to the discovery of periodicities in sunspot data and an ability to predict ionospheric reflectivity and climatic features. But the theory that a planetary influence affects sunspot variations2"4 ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253482b0
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  • 15
    Digitale Medien
    Digitale Medien
    Time and space (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 485-485 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] LAWRENCE Sklar is a philosopher writing about philosophical aspects of space and time, from Newton and Leibniz to Einstein and Reichenbach. Nevertheless, his clear grasp of modern mathematics and physics, and his lucid exposition, make this book eminently suitable for physicists and mathematicians ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253485b0
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  • 16
    Digitale Medien
    Digitale Medien
    Amber light for genetic manipulation (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 295-295 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE report of Lord Ashby's working party (Cmnd 5880, HMSO, 26p) makes it seem more likely than not that biological research involving the "manipulation of the genetic composition of micro-organisms" will continue in Britain, but in an atmosphere which takes account, chiefly through the laying down ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253295a0
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  • 17
    Digitale Medien
    Digitale Medien
    Nuclear fuel plant mystery (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 300-300 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] A TECHNICAN employed at a nuclear fuel fabrication plant in Oklahoma died in an automobile accident on November 13 last year when her car careered off a highway and struck a concrete culvert. The crash has brought national publicity to a bitter dispute over safety standards at the plant and sparked ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253300a0
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  • 18
    Digitale Medien
    Digitale Medien
    International meetings (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 304-304 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR,-The letter from S. Peller (December 13) is similar to so many of the past few years and raises again the recurring, vexing problem of the location of international conferences. Clearly assurances by some governments of entry to all participants are meant by these governments to be honoured in ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253304b0
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  • 19
    Digitale Medien
    Digitale Medien
    Alien message (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 304-304 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR,-If an alien civilisation should chance to receive the radio message broadcast to the stars from the Arecibo telescope (January 24) it would be fully justified in reversing the charge for any reply. I make this assertion because, to judge from your illustration, the original communication was ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253304c0
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  • 20
    Digitale Medien
    Digitale Medien
    The magnetic field of Jupiter (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 306-306 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE latest development in the exploration of the Solar System by spacecraft came with the arrival of the Pioneer 11 probe at Jupiter in early December. Following almost a year after Pioneer 10, its predecessor to the planet, Pioneer 11 swept within 0.6 planetary radii (Ri) of the Jovian surface ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253306b0
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  • 21
    Digitale Medien
    Digitale Medien
    Climbing the technology tree (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 311-311 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE Institute of Electronic and Electrical Engineers, one of the largest professional societies in the world, has turned some of its effort to helping those scientists and engineers faced with redundancy to plot their careers in such a way that they avoid the trap of 'irrelevance'. Its Technology ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253311a0
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  • 22
    Digitale Medien
    Digitale Medien
    Identifying ancient forest (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 313-314 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE climatic climax vegetation of England and Wales is generally considered to be deciduous forest, yet, as a result of human interference since prehistoric times, little, if any, woodland with an uninterrupted history now remains. It is natural, therefore, that conservationists should be concerned ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253313a0
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  • 23
    Digitale Medien
    Digitale Medien
    Nucleic acid–mutagen interactions: crystal structure of adenylyl-3′,5′-uridine plus 9-aminoacridine (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 324-326 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Adenylyl-3′, 5′-uridine and 9-aminoacridine cocrystallise in a heavily hydrated monoclinic lattice. The adenine residues are hydrogen bonded with uracil residues and the base pairs are stacked parallel to each other in the crystal with 9-aminoacridine sandwiched directly between ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253324a0
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  • 24
    Digitale Medien
    Digitale Medien
    Precambrian geomagnetic field reversal (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 332-333 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] As part of a palaeomagnetic survey (D.K.B., M.E.E., A. B. Reid, and E. W. McMurry, unpublished) of Proterozoic sediments in the East Arm Fold Belt of Great Slave Lake, 45 stratigraphically distinct sites have been sampled across a continuous 600-m section. The section consists of steeply dipping, ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253332a0
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  • 25
    Digitale Medien
    Digitale Medien
    Flow separation in meander bends (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 338-339 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Flow separation in meander bends is best expressed as a function of bend tightness and Froude number6. Bend tightness is most usefully defined as the dimensionless ratio between meander radius (Rm) and flow width (w) (Fig. 2). This ratio should represent a legitimate scaling factor for both small ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253338a0
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  • 26
    Digitale Medien
    Digitale Medien
    Field-desorption microscopy and the atom probe (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 342-343 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The field-ion atom probe1, in which a field-ion microscope is combined with a time-of-flight mass spectrometer, has been shown to be a useful instrument for the chemical analysis on an atomic scale of metals and especially of alloys2"4. In an analysis, the field-ion specimen is manipulated to place ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253342a0
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  • 27
    Digitale Medien
    Digitale Medien
    Insect hormones as tsetse abortifacients (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 347-348 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Glossina morsitans morsitans Westw. was used in the experiments reported here. Females were transferred from mass culture to individual containers3 shortly before the first larviposition. Flies were offered a blood meal on rabbit ears 6 d a week and feeding records were kept for each fly. The ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253347a0
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  • 28
    Digitale Medien
    Digitale Medien
    Nitrogen fixation by Rhizobium associated with tobacco and cowpea cell cultures (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 351-352 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] We report nitrogenase-mediated acetylene (C2H2) reduction, and 15N incorporation, in associations of a strain of cowpea rhizobia (32H1) with cell cultures of a natural host, V. unguiculata, but more notably with a non-legume, Nicotiana tabacum. Furthermore, this strain of rhizobia reduced C2H2 when ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253351a0
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  • 29
    Digitale Medien
    Digitale Medien
    Endometrial cell calcium and oestrogen action (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 357-359 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Endometrial cells were isolated and maintained as before' and suspended in Ringer solution composed of 136'9 mM NaCl, 2.7 mM KC1, 0.7 mM CaOl^, 0.6 mM MgCh, and buffered at pH 7.4 with 8.1 mM Na2HPOt/1.5 mM KH2PO4, in the presence of 1 mM Na pyruvate. Calcium uptake by the isolated endometrial ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253357a0
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  • 30
    Digitale Medien
    Digitale Medien
    H 1 and H 2 receptors in the histamine-induced accumulation of cyclic AMP in guinea pig brain slices (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 362-364 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Like other biogenic amines, histamine is able to stimulate the cyclic AMP-generating system in brain slices of different animal species2. Moreover, this action of histamine on brain cells, like other cerebral actions (either electro-physiological3 or behavioural4), seems to be mediated by means of ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253362a0
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  • 31
    Digitale Medien
    Digitale Medien
    Interdigitated repeated sequences in bovine satellite DNA (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 367-370 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] If a stretch of DNA were comprised of only a simple repeated sequence which contains the restriction endo-nuclease recognition site, it would be cleaved to fragments the size of the simple sequence. Conversely, if the simple sequence lacked the recognition site, it would be refractory to digestion. ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253367a0
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  • 32
    Digitale Medien
    Digitale Medien
    Super dense carotenoid spectra resolved in single cone oil droplets (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 370-372 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] It is not known why individual micromeasurements do not substantiate the results of extraction. Neither is it understood, therefore, precisely how individual oil droplet colours are contrived. The flat-top and cutoff spectral character evident in situ might easily be accounted for by spectral ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253370a0
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  • 33
    Digitale Medien
    Digitale Medien
    Age limitation of perceptual span (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 377-378 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] A modified staircase method3 was used to determine the absolute time thresholds for correct reporting of 1, 2, 3, 4 and 5 upper case consonants. In estimating thresholds for more than 1 letter, correct order of report was required. Black stimuli (Letraset 719, 60-point spaced 10mm centre to centre) ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253377a0
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  • 34
    Digitale Medien
    Digitale Medien
    Erratum (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 378-378 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] In the article "Two types of resistance to polyene antibiotics in Candida albicans" by C. C. HsuChen and D. S. Feingold (Nature, 251, 656; 1974), the following corrections should be made to the legend of Table 2. In line 2, for CH3COOH read MeOH; the expression in lines 4 and 5 should read [(c.p.m. ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253378d0
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  • 35
    Digitale Medien
    Digitale Medien
    Genius and the mortal afflictions (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 381-381 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE relationship between creativity and illness is one which stimulates the interest of most of us, particularly when an achievement is of the order of genius and seems to involve an impressive destructive action upon the subject's personal life. In this book Sir George Pickering, former Professor ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253381a0
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  • 36
    Digitale Medien
    Digitale Medien
    Storage diseases (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 382-382 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE identification of the lysosomal enzymes which are lacking in various human, genetically-controlled storage diseases, transformed the approach to this subject. Now that there is a large measure of agreement on the classification and manifestations of these diseases hope is rising that something ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253382a0
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  • 37
    Digitale Medien
    Digitale Medien
    Sequences (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 383-383 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THIS handbook is essentially a comprehensive catalogue of most of the known RNA and DNA sequences so far published and, of necessity, the bulk of the listings refer to the 50 or so tRNA species which have been sequenced. Another attractive target for sequencers are the 5S ribosomal RNAs and ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253383b0
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  • 38
    Digitale Medien
    Digitale Medien
    [International News] (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 225-225 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE Administration's plans for promoting the development of nuclear power in the United States were sharply rapped from both sides last week. Two groups of scientists, each replete with Nobel Prizewinners, traded statements in Washington urging, on the one hand, a greater commitment (to nuclear ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253225a0
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  • 39
    Digitale Medien
    Digitale Medien
    The Shtern case (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 228-228 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The case of Dr Mikhail Shtern, formerly Director and Senior Consultant in the polyclinic of the Vinnitsa Provincial Endocrinological Health Centre has, during the course of pre-trial investigations and the trial itself, caused considerable reaction in the West, which has not passed unnoticed by the ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253228b0
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  • 40
    Digitale Medien
    Digitale Medien
    G -wizardry at Dallas (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 231-232 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] ASTROPHYSICISTS experience biennial urges to congregate in the Texas Symposia on Relativistic Astrophysics (irreverently, Gee-whizz meetings). Recently, five hundred participants assembled in Dallas where from 16-20 December almost fifty scheduled speakers and many more in so-called workshops, ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253231a0
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  • 41
    Digitale Medien
    Digitale Medien
    A hundred years ago (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 234-234 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE ZODIACAL LIGHT.-On the evening of Sunday last, the 24th inst., a surprisingly bright display of this as yet problematical phenomenon was exhibited. There was a repetition on the following evening, but in a less favourable sky. The light had the usual yellowish or pale lemon tinge of the more ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253234a0
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  • 42
    Digitale Medien
    Digitale Medien
    Classical relativity in an up-to-date context (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 236-237 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THERE has recently appeared a substantial paper by F. Salzman "Gravitational Field of a Freely Moving Mass" (// Nuovo Cimento, 24B, 157-188; 1974); the treatment is intended to be that of standard general relativity, howbeit with emphasis on the dynamical rather than the geometrical point of view, ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253236a0
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  • 43
    Digitale Medien
    Digitale Medien
    Earthquake simulation by nuclear explosions (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 242-245 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] A country wishing to evade a comprehensive test ban treaty could disguise a clandestine nuclear test as a natural earthquake by detonating a sequence of explosions, one of which would be caused by the device of ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253242a0
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  • 44
    Digitale Medien
    Digitale Medien
    Cosmological effects of primordial black holes (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 251-252 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] One indication that many black holes exist at present in the Universe is the evidence that the average density of matter in the Universe greatly exceeds the observed density of matter. Application of the virial theorem to galactic clusters5 implies that the density of matter is at least five times ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253251a0
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  • 45
    Digitale Medien
    Digitale Medien
    Efficiencies of electrolytic and thermochemical hydrogen production (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 257-258 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] In the electrochemical case, the overall thermal efficiency is relatively simply defined as e, = A///G (1) where A// is the standard heat of reaction for the oxidation of hydrogen to water under the conditions of use and Q is the total quantity of heat needed to effect the breakdown of 1 mol of ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253257a0
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  • 46
    Digitale Medien
    Digitale Medien
    Methylation of lead in the environment (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 263-264 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Here we present evidence for the first time, that microorganisms in lake sediments can transform certain inorganic and organic lead compounds into a volatile tetra-methyl lead (Me4Pb). Experiments were carried out with 50 g of sediment and 150ml of lake water from Hamilton harbour (Lake Onario), ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253263a0
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  • 47
    Digitale Medien
    Digitale Medien
    A neuroendocrine feedback mechanism in the insect moulting cycle (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 267-269 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Classical studies3'4 have shown that moulting in fifth instar Rhodnius is initiated at feeding by the release of a neurosecretory 'brain hormone' which is necessary for 6-8 d after feeding if the moulting process is to proceed to ecdysis. After this 'critical period' the continued release of 'brain ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253267a0
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  • 48
    Digitale Medien
    Digitale Medien
    Role of foetal adrenocorticotrophin during parturition in sheep (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 274-275 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The simplest hypothesis to explain these changes is that an increase in foetal pituitary secretion of ACTH stimulates the production of cortisol from the foetal adrenal. The cortisol is thought to act on placental enzyme systems to bring about several changes, in particular an increase in maternal ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253274a0
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  • 49
    Digitale Medien
    Digitale Medien
    Chromosome-21-dosage effect on inducibility of anti-viral gene(s) (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 280-282 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Fig. 1 Induction of the AVS in human skin fibroblasts monosomic (cell line 198 halved symbols), disomic (cell line 141 closed symbols), and trisomic (cell line 258, open symbols) for chromosome 21 by human interferon. Three sets of experiments were performed for each cell line described. AVS was ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253280a0
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  • 50
    Digitale Medien
    Digitale Medien
    Corrigendum (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 288-288 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The Editor has been advised that the authorship of the paper "Synthesis mimics of insect juvenile hormone" (Nature, 232, 486; 1971) does not accurately reflect the work done on the paper. With the concurrence of all the present authors, the name of Hwalin Lee (then of Stauffer Chemical Company) ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253288a0
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  • 51
    Digitale Medien
    Digitale Medien
    The way it happened (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 289-290 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THESE two volumes of official history are notable for Professor Gowing's mastery of her subject, the orderliness of her presentation of a complex story and the clarity of her style. She has much to say which scientists will find absorbing, and for the non-scientist she manages to explain as much of ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253289a0
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  • 52
    Digitale Medien
    Digitale Medien
    S. Petterssen (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 293-293 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SVERRE PETTERSSEN, the outstanding meteorologist, died in London on December 31. He was 76. Born in Norway, Petterssen served in the Norwegian Meteorological Service from 1924 to 1939 after graduating from Oslo University. In 1939 he became Professor of Meteorology at the Massachusetts Institute ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253293a0
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  • 53
    Digitale Medien
    Digitale Medien
    Any old Fe 2 , Cu, Al, Pb, Zn, glass, paper…? (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 150-150 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN ANY study of recycling a great deal can be learnt from what industry is already doing. Many industries already carry out recycling in some form. The chemical industry operates large scale polymerisation plants where the economics of manufacture depends critically on the recycling of monomer. The ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253150a0
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  • 54
    Digitale Medien
    Digitale Medien
    A blueprint for space research (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 151-151 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] A TOP-LEVEL advisory committee has told NASA that, unless the agency's dismal budgetary outlook improves, it should take a close look at its plans for planetary research and perhaps even drop or defer two important missions to the outer planets in the late 1970s. The panel makes that suggestion ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253151a0
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  • 55
    Digitale Medien
    Digitale Medien
    Canada adopts new nuclear safeguards (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 152-152 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] STUNG into reconsidering its nuclear export policy by India's explosion of a nuclear device last year, Canada has announced that more stringent safeguards will now be applied to sales abroad of its nuclear technology, facilities and material. But, instead of calling for a complete ban on nuclear ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253152a0
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  • 56
    Digitale Medien
    Digitale Medien
    Czech persecution (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 155-155 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR,-I wish to raise some points about Professor Burhop's letter (November 22). Does he know about the existence of a law in Czechoslovakia, which is much more iniquitous than the one which may be accepted in West Germany? This is the Labour Code (law 42/1970), which contains section 46, lett. e, ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253155a0
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  • 57
    Digitale Medien
    Digitale Medien
    University consultancy (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 156-156 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR,-I would like to support Mr H. A. Cook's letter (December 13). Although I am not certain that all consultancy by university staff should be discouraged, for after all this is one way in which the results of research are transferred to industry, I am more particularly concerned at the use of ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253156c0
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  • 58
    Digitale Medien
    Digitale Medien
    Stability of Antarctic ice (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 159-159 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE continued existence of the apparently unstable West Antarctic Ice Sheet and Ross Ice Shelf is a major geophysical puzzle that only recently has been recognised. In this issue of Nature (page 168) Dr Gordon Robin presents new field data obtained on the Ross Ice Shelf and the very fast moving ice ...
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    URL: http://dx.doi.org/10.1038/253159a0
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    Digitale Medien
    Radioactive tracers in the atmosphere (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 161-161 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE use of fission product pairs with similar half-lives as meteorological tracers is described in a recent paper (Holioway et al., Journal of Geophysical Research, 79, 4453; 1974). This is a recent example of the exploitation of radioactive tracers in the atmosphere, a technique that has developed ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253161a0
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  • 60
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    Digitale Medien
    Ice shelves and ice flow (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 168-172 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] New data on the Ross Ice Shelf provide an insight into the importance of the momentum with which an ice stream enters the shelf for the overall velocity ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253168a0
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  • 61
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    Digitale Medien
    Outburst in U Cephei (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 173-174 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Observations of U Cephei show that the mass transfer and disk formation may be a very variable process. Batten3 and coworkers have tried to detect emission in this system, but found either no emission or at best a marginal phenomenon. On August 8, 1974, however, we observed very strong Ha emission ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253173a0
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  • 62
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    Digitale Medien
    Interaction between coherent light waves and free electrons with a reflection grating (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 184-185 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Smith and Purcell demonstrated4 that light is emitted when a high voltage electron beam moves parallel and close to a metallic optical diffraction grating in a direction perpendicular to the grating rulings (Fig. la). -The radiation has been explained physically in terms of the oscillations that ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253184a0
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  • 63
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    Digitale Medien
    Infection of differentiating muscle cells with influenza and Newcastle disease viruses (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 195-198 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] We therefore examined the replication of influenza viruses in skeletal muscle cells〉 as the latter undergo a characteristic differentiation resulting in the formation of syncytial myotubes, the nuclear DNA synthesis of which has terminated9'10, and the RNA metabolism of which has changed ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253195a0
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  • 64
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    Digitale Medien
    Total human body protein synthesis in relation to protein requirements at various ages (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 192-194 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Such surveys provide a general picture of protein metabolism in mammals and help to explain the metabolic basis for differences in dietary protein requirements both within and between the various species. The concepts involved should apply to man at various ages7"9. In previous studies with human ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253192a0
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  • 65
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    Digitale Medien
    The reversal of methotrexate toxicity by thymidine with maintenance of antitumour effects (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 198-200 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] LI210 Leukaemic cells (105) were injected intraperiton-eally into BDFi male mice, and MTX, CF, TdR, or allopurinol injected intraperitoneally at least 24 h after the inoculation of leukaemic cells. The animals were weighed weekly and observed for toxicity and survival. Since animals dying of drug ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253198a0
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  • 66
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    Digitale Medien
    A cis -dominant regulatory mutation affecting enzyme induction in the enkaryote Aspergillus nidulans (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 210-212 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] In Aspergillus nidulans, lesions in the gene areA can result in inability to utilise a wide variety of nitrogen sources, including acetamide9. This gene is probably involved in regulation of enzyme synthesis by ammonium (ref. 9 and M.J.H., unpublished). Strains containing the mutation, areA2U9 grow ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253210a0
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  • 67
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    Digitale Medien
    Uptake of environmental antigens by the bursa of Fabricius (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 217-219 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] During surgical bursectomy, we observed that the anal lips of a chicken make peristaltic movements as if sucking something into the cloaca. When a liquid or suspension was applied to the external parts of the anus, it was rapidly taken inside by these movements. We hypothesised that at least part ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253217a0
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  • 68
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    Digitale Medien
    Between combine harvester and ribosome (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 80-81 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] PERIODICALLY, action by government committees and individuals in this country has resulted in the science of nutrition being rescued from its characteristic doldrums and becoming a national priority. A government inquiry into the physique of recruits for the Boer War got the subject moving in the ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253080a0
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  • 69
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    Digitale Medien
    Mr Trip's purple book (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 84-84 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] AFTER a year and a half of actively, but silently consulting everybody, the Dutch Science Minister Mr F. H. P. Trip, finally ventured into the limelight to present his 'Purple Book' on science policy. Mr Trip is a most remarkable man. He has roots in industry (as a managing director of Naarden ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253084b0
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  • 70
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    Digitale Medien
    Research in India (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 86-86 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IT is only natural that Dr Macdonald (Nature, November 15, 1974)-with his World Health Organisation (WHO) and Genetic Control of Mosquito Unit (GCMU) connections-should have reacted the way he has, to a part of my item on work on the genetic control of mosquitoes (Nature, September 20, 1974). I am ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253086a0
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  • 71
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    Digitale Medien
    A hundred years ago (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 86-86 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE great solar eclipse of 1868 was visible in Siam, as the 1875 eclipse will be. The then reigning Siamese king had not invited any European astronomer; but the French Government sent an expedition, who located themselves in Malacca for the purpose of taking spectroscopic observations. The King of ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253086e0
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  • 72
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    Digitale Medien
    Pulsing X-ray stars (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 92-92 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] OF the sixty or so X-ray stars known in our Galaxy and in fthe Magellanic Clouds only a few have o so far been found to pulse regularly. One, the Crab pulsar, has a pulse period of 33 milliseconds, as do its radio and optical counterparts, and is thought to be a rapidly spinning neutron star. The ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253092a0
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  • 73
    Digitale Medien
    Digitale Medien
    Giant multipole resonances (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 92-93 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] MANY years ago it was found that the cross sections for the radiative capture of protons by nuclei showed broad maxima at energies around 10 to 20 MeV. These persist throughout the periodic table, and accurate measurements showed that the energies of these states is given approximately by 63A ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253092b0
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  • 74
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    Digitale Medien
    Birefringence experiments on isolated skeletal muscle fibres suggest a possible signal from the sarcoplasmic reticulum (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 97-101 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] When stimulated by external electrodes, a frog muscle fibre bathed in hypertonic Ringer gives a birefringence signal consisting of three components. The small first component is due to the action potential of the surface membrane, and the much larger second component may be related to voltage ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253097a0
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  • 75
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    Digitale Medien
    CO 2 and HCN in sunspots (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 104-104 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The sunspot model selected for the equivalent width calculations is that of Stellmacher and Wiehr10. The procedure for calculating the equivalent widths has been outlined earlier12. Two R (56) lines of CO2 at wavenumbers 3,478.93 cm'1 and 2,384.49 cm'1, belonging respectively to the bands ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253104a0
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  • 76
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    Digitale Medien
    Novel reactions of hydrocarbon complexes of metal-substituted sheet silicates: thermal dimerisation of trans -stilbene (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 110-111 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Complexes of benzene, toluene, the xylenes and trans-stilbene were formed with dehydrated Cu(II)-exchanged montmorillonite by exposing the latter to the vapour of each respective aromatic material. Excess fraAzs-stilbene was removed by washing with chloroform, and surplus solvent was removed by ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253110a0
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  • 77
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    Digitale Medien
    The corneal cones of Limulus as optimised light concentrators (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 115-116 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Figure 1 illustrates the performance of an ideal light collector. All light rays incident upon the entrance pupil Sj at an angle 6 〈 9max are channelled through the exit pupil S2 after undergoing perhaps one or more reflections. The rays emerge with a large angular spread, approaching 90 to the ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253115a0
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  • 78
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    Digitale Medien
    Action potentials induced in slow muscle fibres by partial denervation (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 122-123 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The experiments were performed on the right pyriformis muscle of Rana temporaria. This muscle is usually innervated by spinal branch IX; it has, however, been observed7 that occasionally the muscle receives additional motor axons from spinal branch VIII. One of these branches, usually IX, was cut ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253122a0
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  • 79
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    Digitale Medien
    Reaction of ribonucleosides and deoxynucleosides with copper(II) acetate (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 127-128 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The X-band spectra of frozen DMSO solutions of copper(II) acetate alone and with various ribonucleosides and deoxynucleosides are shown in Fig. 1. As in previous work1 fresh solutions were used (102 M in copper(II) acetate). The S = 1 bands at about 40, 460 and 590 mtesla (mT) (Fig. la) confirm ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253127a0
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  • 80
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    Digitale Medien
    Factor which affects the mode of genetic recombination in E. coli (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 138-140 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The transfer of genetic material can result in the formation of two possible types of recombinant clones: (a) substitution type resulting from replacement of recipient genetic material by a homologous segment of donor material, and (b) addition type resulting from addition of the donor genetic ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253138a0
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  • 81
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    Digitale Medien
    Host range of murine xenotropic virus: replication in avian cells (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 140-142 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] As illustrated in Table 1, the NZB pseudotype virus gave efficient focus formation in a variety of mammalian cells including human, rat, guinea pig, rabbit, cat, cow, American bear, lion and African water mongoose. Infection occurred also in deer, racoon, gazelle, and Rhesus monkey. In the latter ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253140a0
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  • 82
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    Digitale Medien
    Management of natural systems (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 146-146 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN his preface Roche states that forest ecosystems are a rich source of information on ecological genetics but that published evidence has not yet significantly penetrated the botanical literature. Little exception could be taken to the first part of that statement, and the book, itself a rich ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253146a0
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  • 83
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    Digitale Medien
    Manpower needs are not so easily estimated (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 1-1 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN A DOCUMENT put about by the Manpower Services Commission of the Department of Employment, the claim is made, amongst others, that in the off-shore oil industry 'immediate and continuing shortages of geologists, petroleum engineers, drillers and divers have been established'. The circumstances ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253001a0
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  • 84
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    Digitale Medien
    Changes due in French science (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 3-3 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] EIGHT THOUSAND million francs in the French budget for scientific research means a growth of 13% over 1974- barely enough to keep pace with inflation. It has been described as a marking-time budget, and hardly more could have been expected in the present economic climate. Moreover the new ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253003a0
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  • 85
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    Digitale Medien
    Letter from Chile (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 5-5 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR,-A letter from Gerschenfeld and others concerning the problems of Chilean scientists under (the military rule (Nature, March 29, 1974) has been answered by Eyzaguirre (Nature, July 5, 1974). I feel it my duty to present the view of a Chilean scientist, a witness of the entire process who works ...
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    URL: http://dx.doi.org/10.1038/253005a0
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  • 86
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    Digitale Medien
    A hundred years ago (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 8-8 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] A RARE phenomenon, says the Malta Times, occurred in the forenoon of Monday, the 21st ult. During a strong wind from the south-west, which had prevailed for two days previously, the sea suddenly rose several feet and flooded the moles and roads surrounding the harbours, causing four or five ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253008a0
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  • 87
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    Digitale Medien
    Miospore sequence from Scotland (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 10-10 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Dinantian miospores from the Spilmersford Borehole in East Lothian, Scotland. The description of 45 specimens examined in a recently completed survey provides one of the first palynological reference sequences for the Lower Carboniferous in Scotland. 8, Retusotrileles incohatus Sullivan; 9 and 10, ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253010b0
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  • 88
    Digitale Medien
    Digitale Medien
    More antigens in hepatitis B (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 13-13 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] AUSTRALIA ANTIGEN, now referred to as hepatitis B surface antigen in view of its close association with hepatitis B virus, was discovered as a lipoprotein which was immunologically distinct from normal low density lipoproteins. Examination of this antigen in the electron microscope revealed a ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253013a0
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  • 89
    Digitale Medien
    Digitale Medien
    Nucleosynthesis and matter–antimatter cosmologies (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 25-26 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Steigman5 has emphasised that there is an important loss of neutrons at temperatures of the order of 1 MeV. (The matter-antimatter separation is assumed4 to have taken place at temperatures of the order of 350 MeV.) Protons are essentially 'frozen' within a matter region by electrostatic ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253025a0
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  • 90
    Digitale Medien
    Digitale Medien
    Landau damping and cyclotron resonance in uniform magnetoplasma (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 29-30 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The system under consideration consists of a homogeneous, collisionless hot plasma in a uniform magnetic field #o, a spectrum of electron plasma waves with their propagation vectors k antiparallel to Bo, and a wide band whistler mode perturbation with k parallel to Bo. For simplicity, the particle ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253029a0
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  • 91
    Digitale Medien
    Digitale Medien
    Glacial climates in the eastern tropical South Pacific (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 34-36 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] At present, the low elevations of the Galapagos receive no moisture for most of the year and the upper elevations (1,000-1,700m) are at best, covered by fog1'18'19. The fog zone is the result of a temperature inversion brought about by the cooling, compression and drag of the lower part of the air ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253034a0
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  • 92
    Digitale Medien
    Digitale Medien
    The reduction of mono-coordinated molecular nitrogen to ammonia in a protic environment (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 39-40 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Table 1Yields of ammonia and hydrazine from reaction of H2SO4 with tungsten and molybdenum complexes Complex Solvent %NH3*%N2H4* N2t cw-[W(N2)2(PMe2Ph)4] MeOH 90 2 94 MeOH 88 2 92 MeOH/H2Ot 63 3 67 THF 46 13 59 THF 42 23 64 trans- [W(N2)2 (PMePh2)4] THF 36 15 54 THF 36 〈1 34 ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253039b0
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  • 93
    Digitale Medien
    Digitale Medien
    Effect of absence of cochlear outer hair cells on behavioural auditory threshold (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 44-46 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] A common means of investigating the relative roles of the two groups of sensory cells is to destroy portions of one population, usually the OHCs, and assess the changes thus produced in various indices of cochlear function. A valuable tool in such studies has been the application of aminoglycoside ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253044a0
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  • 94
    Digitale Medien
    Digitale Medien
    Dissociation of Factor VIII-related antigen into subunits (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 55-56 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] It has already been shown that Factor VIII readily separates into subunits under the influence of concentrated saline solution1-2 or reducing agents3-4 and the antigen remains as a large intact molecule when the Factor VIII is dissociated. This illustrates a clear distinction between the two ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253055a0
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  • 95
    Digitale Medien
    Digitale Medien
    Position of regularly spaced single-stranded regions relative to 5-bromodeoxyuridine-sensitive sites in sea urchin morula DNA (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 64-66 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] In the labelled DNA preparations used at least 85 % of the isolated radioactivity is covalently bonded, as determined by enzymatic and alkaline hydrolysis2. Also, 32P-DNA should represent only nuclear sequences since mitochondrial DNA is not synthesised until after the morula stage4'5. Both of ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253064a0
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  • 96
    Digitale Medien
    Digitale Medien
    Erratum (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 74-74 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] In the article "Dissociation of EEG and behavioural effects of ethanol provides evidence for a noneholinergic basis of intoxication" by W. R. Klemm (Nature, 251, 234; 1974) the following corrections should be made. In the legend to Fig. 1, the dose of eserine (Fig. Ib) should be 0.2 mg kg"1, and of ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253074b0
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  • 97
    Digitale Medien
    Digitale Medien
    Choosing and chancing (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 76-76 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IT has become axiomatic that science, the acquisition of knowledge, should be expected to increase the health, wealth and happiness of mankind. That would seem to apply especially to the results of studies on the various complex processes concerning reproduction, whether they be directed at ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253076b0
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  • 98
    Digitale Medien
    Digitale Medien
    Announcements (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 78-78 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Awards The Royal Society medals for 1974 have been awarded to the following: The Copley Medal to Sir William Hodge. The Rumford Medal to Sir Alan Cottrell. A Royal Medal to Sir Fred Hoyle. A Royal Medal to S. Brenner. A Royal Medal to Sir George Edwards. The Davy Medal to J. Baddiley. The ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253078a0
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  • 99
    Digitale Medien
    Digitale Medien
    Differentiation of opiate agonist and antagonist receptor binding by protein modifying reagents (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 448-450 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Brains, minus cerebella, from male Sprague-Dawley rats (180-220 g) were homogenised in standard buffer (50 mM Tris-HCl, pHl.l at 25 C) and centrifuged at 49,500# for 15 min; the pellets were resuspended in 100 volumes of standard buffer, incubated at 37 C for 30 min, recentri-fuged and resuspended ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253448a0
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  • 100
    Digitale Medien
    Digitale Medien
    Changed surface glycoprotein as a marker of malignancy in human leukaemic cells (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 457-460 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Normal resting and phytohaemagglutinin (PHA) stimulated peripheral blood lymphocytes served as controls. Blood lymphocytes from patients in various stages of infectious mononucleosis (IM) were used as an additional control for a non-malignant lymphoproliferative disease. Defibrinated blood samples ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253457a0
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