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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 199 (1963), S. 622-622 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have therefore examined the resistance to cupric ions of a number of pure strains of sulphur-oxidizing bacteria and of iron-oxidizing bacteria. At the same time, we have also studied the effect of copper on the growth of sulphate-reducing bacteria. At different times various hypotheses of ...
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 197 (1963), S. 683-684 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1. Cooling-rate to 1,320, 250/seo Fig. 2. Cooling-rate to 1,310. 325/seo Fig. 3. Cooling-rate to 1,220. 435c/sec Fig. 4. Cooling-rate to 1,220, 750/sec To achieve this the thermoelectric K.M.F. from tho thermocouple microfurnace is monitored during cooling by a cathode-ray oscilloscope. ...
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 198 (1963), S. 662-665 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] MUCH attention has been directed to estimating the relative extent to which recently deposited strontium-90 as opposed to the cumulative total in the soil is responsible for the contamination of milk and other components of diet. In addition to elucidating mechanisms of food chain transfer, this ...
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 180 (1957), S. 87-87 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1. Electron micrograph of a cross-section of a crumpled monolayer of egg albumen stained with osmium tetroxide The cross-section of the crumpled sheet of protein appeared as a thin, dense, highly convoluted line (Fig. 1). Since the thickness of the best sections (about 200 A-) was still some ...
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 985-986 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In normal growth a steady stream of cells, maintained by division in the neighbourhood of the papilla at the base of the follicle, passes up the tube formed by the outer root sheath and differentiates to form as many as six concentric cylinders ; the three outer cylinders constitute the inner root ...
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 181 (1958), S. 1550-1551 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fixation of bacteria with the buffered osmium tetroxide solution, commonly employed for animal tissues, has for some time been regarded as unsatisfactory for electron microscopy2. In particular the nuclear cavity and contents are poorly preserved. On the other hand, fixation in a buffered solution ...
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 180 (1957), S. 27-28 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ESTIMATIONS, in this Laboratory1 and elsewhere2, of the amount of chromium in the protective films formed on iron during immersion in potassium chromate solution have been reported. Further measurements in this Laboratory, using the radioactive tracer technique previously reported1, have yielded ...
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 134 (1934), S. 218-218 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN connexion with the correspondence in NATURE1 on the effect of yeast extract on plant growth, writers upon this subject may be interested to know that yeast has for a long time been recognised as a fertiliser on the Keuper Marls around Burton–on–Trent. Thirty years ago it was a ...
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 172 (1953), S. 164-165 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In order to make sure of the exact disposition of this residue within the cortex, the experiment has been carried out on cross-sections of oxidized hair. On treatment with ammonia, these cross-sections swelled to about three times their original diameter and the cortical residue was seen to extend ...
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 168 (1951), S. 824-824 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The existence of a subcuticular membrane in animal hairs was suggested by the German workers Lehmann5'6 and ElcSd and Zahn7 several years ago. Their evidence for a subcuticular origin for the tubular residues has already been criticized and the tubes shown to be derived from the external layers of ...
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