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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 129 (1932), S. 59-59 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DR. M. KATALINIĆ has described a method of producing floating drops of clean water on a water surface by delivery from a suitably situated jet.1 Such drops must owe their existence to the stability of the film immediately beneath them, that is, the thickness-coefficient of the ...
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 190 (1961), S. 285-286 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Colson3 examined both varieties of mushroom and found that the haploid chromosome number, seen as bivalents at meiosis, was 9 in both varieties. In a variety grown on a commercial scale in Great Britain, Evans1 found a higher haploid chromosome number, n - 12, which he attributed to either : (a) ...
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 190 (1961), S. 366-367 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The disease is sett-transmitted and heat treatment of the setts in water at 50 C. for 3 hr. or in air at 54 C. for 16 hr. (as used in the control of ratoon stunting disease1) failed to free them from the disease. Inoculations into healthy setts did not produce the disease but the striations alone ...
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 197 (1963), S. 441-442 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ONE form of the mass-energy cycle is shown in Fig. 1. Experimental support for the cycle comes from the fact that all known particles of lower energy may be created from a 10-BeV electron. The only particle interactions allowed by the cycle which have not been observed experimentally are the ...
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 197 (1963), S. 682-683 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have studied twins on the surfaces of over a thousand crystals of natural, Ticonderoga graphite3-5. The crystals are frequently not perfect single crystals, but are composed of two or more flakes of highly perfect graphite twisted with respect to one another4. Almost invariably the twins were of ...
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 189 (1961), S. 908-909 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] These lines, which have not previously been detected because of obscuration by water-vapour absorption even at mountain observatories are clearly observed at 40,000 ft., as shown in Fig. 1. They remain of the same intensity at higher altitudes, thus confirming their solar origin. Another solar ...
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 186 (1960), S. 873-874 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Senior and Siegel6 have attempted to explain the radar echo as due mainly to specular reflexions from four or five regions concentrated towards the centre of the Moon which have dimensions comparable to a Fresnel zone and which are smooth to a fraction of a wave-length. To account for the shape of ...
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 186 (1960), S. 258-258 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The movement of the usual rack and pinion of the mechanical stage of a microscope, when enlarged 300-400 times on the film before projection, is so irregular owing to the backlash and the tremor of the operator's hand and the need for changing the grip that it is quite unacceptable. After a number ...
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 204 (1964), S. 670-670 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The peak power density at the focus of the neodymium glass laser beam was about 1011 W cm-2. The output wave-length was 10,600 A. Each laser pulse lasted about 1 jjisec and consisted of three spikes. The energy in a pulse was about 1 joule. The focused beam broke down atmospheric air, so the target ...
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 201 (1964), S. 774-775 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] CHROMATOGRAMS containing radioactive compounds are usually autoradiographed by exposing them in close contact with an X-ray film. This technique gives good results for most radioactive isotopes of biological interest. The b-particles emitted by tritium, however, have such a short range (Emax =18 ...
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