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  • 1
    Electronic Resource
    Electronic Resource
    Group Rotation in Solid Ammonium and Calcium Nitrates. (1931)
    [s.l.] : Nature Publishing Group
    Nature 128 (1931), S. 410-411 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE phenomenon of molecular rotation in the solid state first recognised by L. Pauling1 is, in accord with his prediction, proving of wide occurrence. In many compounds the excitation of rotation about various axes is accompanied by gradual changes in such properties as heat ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/128410b0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Photoperiodic Responses of Plants and Animals (1952)
    [s.l.] : Nature Publishing Group
    Nature 169 (1952), S. 242-243 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The action spectra have been measured for flowering in Glycine max var. Biloxi and Xanthium saccharatum, two short-day plants, and in Hordeum vulgare var. Wintex and Hyoscyamus niger (annual), two long-day plants, as well as for promotion of leaf elongation in dark-grown seedlings of Pisum sativum ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/169242a0
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  • 3
    Electronic Resource
    Electronic Resource
    Phosphate and Salt Uptake by Bakers' Yeast (1960)
    [s.l.] : Nature Publishing Group
    Nature 188 (1960), S. 862-863 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1. Hofstee graph for aerobic accumulation of phosphate at concentration of 10-2 to 10- by bakers' yeast in the presence of 3 glucose at pH 4 -0 Fig. 2. Effect of 0 -l M p-phenylenediamine on aerobic phosphate accumulation by bakers' yeast from a 2 x 10-6 M solution in the presence of 10-4 M ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/188862a0
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  • 4
    Electronic Resource
    Electronic Resource
    A Spectroscopic Method for Detecting some Forms of Chelation (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 147-148 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ABNORMALLY large differences in solubility and volatility between isomers of some disubstituted benzene derivatives have been explained by Dr. N. V. Sidgwick as arising from the presence of chelate rings in the anomalous compounds. These rings are considered to be formed between ortho ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/135147b0
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  • 5
    Electronic Resource
    Electronic Resource
    Promotion of Seed Germination by Nitrates and Cyanides (1972)
    [s.l.] : Nature Publishing Group
    Nature 237 (1972), S. 169-170 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Seeds of pigweed (Amaranthus albus L.) and lettuce (Lactuca sativa L. cultivar Grand Rapids) were selected from about fifty species, many of which responded similarly to the several compounds. Duplicate lots of 100 seeds in replicated experiments were placed in covered Petri dishes on filter papers ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/237169b0
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  • 6
    Electronic Resource
    Electronic Resource
    Photoreceptive Pigments for Anthocyanin Synthesis in Apple Skin (1965)
    [s.l.] : Nature Publishing Group
    Nature 205 (1965), S. 909-910 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Our findings indicate that the photoreceptor for the HER in apple skin is the photosynthetic system. The maximum near 650 mμ in the action spectrum for the anthocyanin formation1 corresponds to the red absorption maximum of chlorophyll b. A broad subsidiary maximum between 420 and 470 mμ is ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/205909a0
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  • 7
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    A combined approach of remote sensing and airborne electromagnetics to determine the volume of polynya sea ice in the Laptev Sea (2013)
    Copernicus Publications (EGU)
    In:  The Cryosphere, 7 (3). pp. 947-959.
    Details
    Publication Date: 2014-12-22
    Description: A combined interpretation of synthetic aperture radar (SAR) satellite images and helicopter electromagnetic (HEM) sea-ice thickness data has provided an estimate of sea-ice volume formed in Laptev Sea polynyas during the winter of 2007/08. The evolution of the surveyed sea-ice areas, which were formed between late December 2007 and middle April 2008, was tracked using a series of SAR images with a sampling interval of 2–3 days. Approximately 160 km of HEM data recorded in April 2008 provided sea-ice thicknesses along profiles that transected sea ice varying in age from 1 to 116 days. For the volume estimates, thickness information along the HEM profiles was extrapolated to zones of the same age. The error of areal mean thickness information was estimated to be between 0.2 m for younger ice and up to 1.55 m for older ice, with the primary error source being the spatially limited HEM coverage. Our results have demonstrated that the modal thicknesses and mean thicknesses of level ice correlated with the sea-ice age, but that varying dynamic and thermodynamic sea-ice growth conditions resulted in a rather heterogeneous sea-ice thickness distribution on scales of tens of kilometers. Taking all uncertainties into account, total sea-ice area and volume produced within the entire surveyed area were 52 650 km2 and 93.6 ± 26.6 km3. The surveyed polynya contributed 2.0 ± 0.5% of the sea-ice produced throughout the Arctic during the 2007/08 winter. The SAR-HEM volume estimate compares well with the 112 km3 ice production calculated with a~high-resolution ocean sea-ice model. Measured modal and mean-level ice thicknesses correlate with calculated freezing-degree-day thicknesses with a factor of 0.87–0.89, which was too low to justify the assumption of homogeneous thermodynamic growth conditions in the area, or indicates a strong dynamic thickening of level ice by rafting of even thicker ice.
    Type: Article , PeerReviewed
    Format: text
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