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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 156 (1945), S. 451-452 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN connexion with some experiments concerning the decomposition of calcium fluoride by fusing with silica and sodium carbonate, the formation of needle-shaped crystals was observed. The crystals were analysed, and it appeared that the formula of the compound must be ...
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 177 (1956), S. 238-238 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The presence of superoxide ion (O2~) has been established by means of both chemical methods and by measuring the magnetic susceptibility. The composition of this substance indicates that the dehydration is associated with a disproportiona-tion of the following kind : (1-2/) O2- where y ...
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 190 (1961), S. 714-715 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The nitrate was found to have tetragonal symmetry, corresponding to the space group P42nm (No. 102). The dimensions of the elementary cell are a = b = 11 -94 A. and c = 8-06 A. The cell contains two formula units. Parameter values for all the atoms with the exception of the hydrogens have been ...
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 338 (1980), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 24 (1936), S. 813-813 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 202 (1964), S. 1210-1210 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The compound Zn(N3)2(NH3)2 has been found to have an orthorhombic unit cell, and to belong to the space group Pna21, the axial ratios being a = 9-52 A, b = 19-03 A, c = 7-20 A. The cell contains eight formula units. The structure is under refinement. Table 1. SPACE GROUP Pnma ...
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 201 (1964), S. 1211-1211 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table l. PABAMETER VALUES FOR Si 2N 2O. SPACE GROUP Cmc2t Position (ref. 3) Atom x y z 8b Si 0-176 86 N 0-218 4a O 0 The crystals have an orthorhombic symmetry, corresponding to the space group Cmc21(No. 36)3. The cell dimensions are: a = 8.843 0.005 Å; b = 5.473 0.005 Å; c = ...
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 874-874 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ABOUT twenty years ago, O. Olsson-Collenberg1 synthesised a series of alkali tungsten chlorides with trivalent tungsten of the general formula M3W2Cl9. Later, Collenberg and Sandved2 found that water solutions of these compounds ...
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 187 (1960), S. 54-55 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The compound was prepared in two different ways : (a) by sintering in an argon atmosphere a mixture of finely powdered boron (99 per cent purity) with amorphous silicon in an electrical resistance-type furnace ; (6) by melting a mixture of boron (about 10 per cent) and silicon (about 9f per cent) ...
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Water, air & soil pollution 91 (1996), S. 187-196 
    ISSN: 1573-2932
    Keywords: methylmercury ; concentration in air ; MQ-water ; lake water ; bubbling with ambient air ; distribution constants ; generation of methylmercury
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract With the intention to elucidate, at least partly, why lakes situated nearby sometimes exhibit very different concentration of methylmercury in their fish population, two such lakes have been studied. A newly developed bubbling method was applied to determine very low concentrations of airborne methylmercury and the actual distribution constant (air/water). The water in one of the lakes studied was clear. In the other it was brownish. The result of the investigation showed that water in the clearwater lake with respect to the distribution of methylmercury between air and water behaved nearly in the same way as MQ-water. The behaviour of the brownish lakewater was however quite different. It turned out that the bubbling procedure in this case resulted in generation of some methylmercury in this water.
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