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  • 1
    Electronic Resource
    Electronic Resource
    An attempt to the explanation and to the prediction of the eleven-year cycle of solar activity (1966)
    Springer
    Pure and applied geophysics 63 (1966), S. 205-210 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary According to the author the reason of the subsistence of the 11 years' sunspot cycle is to be found in the conjunction of the planets. As a result of the investigations it has been stated that from among the nine planets the joint tidal effect of Venus-Jupiter-Earth is a decisive factor in the variations of sunspot activity. The above three planets are every 10.4 years and 12.0 years respectively, in a close conjunction. The mean value (11.2 years) is in an almost full accordance with the average cycle-period. The fluctuations of the period of the cycle come from the fact that the planets' getting into approximately one line takes a different time within each cycle. This time delay is the cause of the stronger or weaker sunspot activity, and of the shorter or longer cycles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00875170
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  • 2
    Electronic Resource
    Electronic Resource
    Nitrogen balances in long-term field experiments (1995)
    Springer
    Nutrient cycling in agroecosystems 43 (1995), S. 13-19 
    Details
    ISSN: 1573-0867
    Keywords: deep-drilling ; environmental conditions ; N-balances ; N-fertilization ; nitrate accumulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The influence of fertilization with different N doses on nitrate-N content of the deeper soil layers were investigated in soils of long-term experiments at the experimental stations of the National Fertilizer Experimental Network in Hungary. Distribution of nitrate-N with depth was also studied in plots fertilized with different N doses. Although these experiments were set up according to an identical experimental plan at every location, after 20 years of experimentation substantial differences could be detected in the nitrate-N contents, nitrate-N distribution profiles on plots of the same treatments, as well as in the yield and the nitrogen uptake of the cultivated plants at the various sites. These differences are attributed to differences in soil properties and in environmental conditions existing at the individual experimental stations. The conclusions drawn from the data are very important when evaluating the role of nitrogen fertilization in the nitrate-contamination of soils, surface water and groundwater, and for a more precise determination of the N doses to be applied under specific soil and environmental conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00747677
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  • 3
    Electronic Resource
    Electronic Resource
    Thermal polycondensation of ammonium paratungstate, (NH4)10[W12O40(OH)2].4H2O (1978)
    Springer
    Journal of materials science 13 (1978), S. 2541-2547 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Connected with the examination of the thermal polycondensation of ammonium paratungstate pentahydrate the chemical and morphological properties of intermediate phases formed during the thermal decomposition of APT have been investigated. We have studied the pH and the turbidity of the aqueous solutions of the intermediate phases, the solubility of the phases, and their rehydratation capability as well as the morphology of the crystallite granules and the grain size distribution. These properties of the original APT have been related to the same properties of the products of decomposition formed between different temperature ranges. The results obtained show unambiguously that each of the above mentioned properties suddenly changes in the temperature range 225 to 250°C. This temperature range coincides with the formation temperature of a new phase called APT II. The most probable formula of APT II is (NH4)8 [H2W13O43(OH)2]·H2O.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02402739
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  • 4
    Electronic Resource
    Electronic Resource
    Thermal polycondensation of ammonium paratungstate, (NH4)10[W12O40(OH)2].4H2O (1978)
    Springer
    Journal of materials science 13 (1978), S. 2541-2547 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Connected with the examination of the thermal polycondensation of ammonium paratungstate pentahydrate the chemical and morphological properties of intermediate phases formed during the thermal decomposition of APT have been investigated. We have studied the pH and the turbidity of the aqueous solutions of the intermediate phases, the solubility of the phases, and their rehydratation capability as well as the morphology of the crystallite granules and the grain size distribution. These properties of the original APT have been related to the same properties of the products of decomposition formed between different temperature ranges. The results obtained show unambiguously that each of the above mentioned properties suddenly changes in the temperature range 225 to 250°C. This temperature range coincides with the formation temperature of a new phase called APT II. The most probable formula of APT II is (NH4)8 [H2W13O43(OH)2]·H2O.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00552682
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  • 5
    Electronic Resource
    Electronic Resource
    Some new aspects of the phase diagram of the NH 4 + /H+-W-O system (1982)
    Springer
    Journal of materials science 17 (1982), S. 1955-1962 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The phase composition of partially-reduced products of ammonium paratungstate (APT) was investigated. The samples were prepared by reducing the APT in a H2 + N2/1∶29 volume ratio/atomosphere in the temperature range 610 to 860 K, and studied by means of chemical analysis, by X-ray diffraction analysis and by thermoanalytical methods. The reduction products can be described by the general formula of M xWO3−y+x/2 where M can be either H+ and/or NH 4 + . Products considered as tungsten bronzes (TB) can be formed in a fairly narrow temperature range. Another product, the so-called decomposed APT (DAPT) is a mixture of bronzes and of some other compounds characterized by y〈x/2 and considered as some intermediate phases between TB and tungstates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00540412
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  • 6
    Electronic Resource
    Electronic Resource
    Heteroepitaxial growth of ZnS on GaP (1969)
    Springer
    Journal of materials science 4 (1969), S. 699-703 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Epitaxial layers of ZnS were grown on GaP single crystals by a chemical transport reaction. The growth process and the heterostructures obtained were investigated by X-ray diffraction and optical microscopy. It was found that the epitaxial overgrowth is polarity dependent. The formation of a transition layer at the interface between the ZnS and GaP was observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00742426
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  • 7
    Electronic Resource
    Electronic Resource
    Effect of meteorological and cosmic factors upon electrolyte solutions (1990)
    Springer
    Theoretical and applied climatology 42 (1990), S. 129-133 
    Details
    ISSN: 1434-4483
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The authors investigated the biometeorologially and physiologically important role of the variations in the values of pH and resistance of physiological sodium cloride solutions (the so called Ringer-solution) in an open vessel and a grinded glass closed vessel respectively during the course of a year. Investigations carried out in a carefully controlled and conditioned spaceled to the following results: 1. There are seasonal variations, the resistance and pH mean values are higher in winter, than in summer. 2. The winter values are lower during cyclonic weather situations, than in summer with higher values in an anticyclonic pattern. 3. The influence of weather fronts seems to be more pronounced in an open place. The increase of resistance occurred after a frontal passage (unstable cold front). One observes during a warm front passage an increase in pH level and a smaller decrease during a cold front passage. 4. The influence of solar activity is detectable. There is a decrease in resistance during a wave-like radiation and an increase during a particle invasion. The variation in pH level is not so definite.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00868220
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  • 8
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    Transglutaminase 2-/- mice reveal a phagocytosis-associated crosstalk between macrophages and apoptotic cells (2003)
    National Academy of Sciences
    Details
    Publication Date: 2003-06-16
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 9
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    Thermal polycondensation of ammonium paratungstate, (NH4)10[W12O40(OH)2].4H2O (1978)
    Springer
    Details
    Publication Date: 1978-12-01
    Print ISSN: 0022-2461
    Electronic ISSN: 1573-4803
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by Springer
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  • 10
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    Detailed clay mineralogy of the Triassic-Jurassic boundary section at Kendlbachgraben (Northern Calcareous Alps, Austria) (2012)
    Mineralogical Society of Great Britain and Ireland
    Details
    Publication Date: 2012-06-01
    Description: The Triassic-Jurassic boundary (TJB) is marked by one of the five largest Phanerozoic mass extinctions. To constrain existing models for TJB events, we obtained a stratigraphically highly resolved dataset from a marine section at Kendlbachgraben, Austria.The topmost Triassic Kössen Formation contains low to medium-charged smectite and vermiculite as alteration products of mafic-ultramafic minerals. The clay minerals in the boundary mudstone are kaolinite ⩾ illite + muscovite 〉〉 smectite 〉 chlorite. Predominant kaolinite suggests humid climate and abundant terrigenous input. In the lowermost Jurassic, the clay mineral pattern changes to illite + muscovite 〉〉 kaolinite 〉〉 smectite, which reflects change to less humid and more moderate climate.The topmost Kössen Formation also contains clay spherules. Their composition, shape and size indicate that they are alteration products of airborne volcanic glass droplets solidified in the air, settled in the sea and altered rapidly with negligible transport in terrestrial or marine environments. Our data are consistent with sudden climatic change at the TJB, as a result of large-scale volcanic activity of the Central Atlantic Magmatic Province which produced distal airfall volcanic ash.
    Print ISSN: 0009-8558
    Electronic ISSN: 1471-8030
    Topics: Geosciences
    Published by Mineralogical Society of Great Britain and Ireland
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