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  • Nature Publishing Group  (5)
  • American Association for the Advancement of Science (AAAS)  (1)
  • Blackwell Publishing Ltd  (1)
  • 1980-1984  (7)
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  • 1
    Digitale Medien
    Digitale Medien
    Distribution and Probable Source of Nitrate in Ground Water of Paradise Valley, Arizona (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 18 (1980), S. 0 
    Details
    ISSN: 1745-6584
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Energietechnik , Geologie und Paläontologie
    Notizen: Field investigations in Paradise Valley, Arizona, conducted during 1974 and 1977, delineated areas of ground water with up to 132 mg/1 nitrate. Two alternative interpretations are developed as to possible sources of the excess nitrate. The first is a conventional interpretation identifying the use of nitrogenous fertilizers as the primary source and disposal of treated waste-water effluent as a secondary source. An alternative interpretation identifies the source as a sand and gravel unit that is interpreted as a braided-stream deposit, located about 152 m (500 ft) below the land surface. The source of the nitrate may have been NH4Cl leached from tuffs in the adjacent Superstition Mountains, subsequently oxidized to nitrate and deposited in abandoned channels of the braided-stream complex. At present, it is not possible to make a definitive choice among the possible nitrate sources.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1745-6584.1980.tb03396.x
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  • 2
    Digitale Medien
    Digitale Medien
    Noise and recognizability of coarse quantized images (reply) (1984)
    [s.l.] : Nature Publishing Group
    Nature 308 (1984), S. 212-212 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] MORRONE ET AL. REPLY-For us the most intriguing aspect of Harmon and Julesz's1 ingenious demonstration is that blocking does not merely degrade the image, but renders recognition impossible. Normal masking (such as their Fig. 3a1 or indeed our Fig. 1d2) degrades the image but leaves it still ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/308212a0
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  • 3
    Digitale Medien
    Digitale Medien
    Motion smear (1980)
    [s.l.] : Nature Publishing Group
    Nature 284 (1980), S. 164-165 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] In addition to the threshold measurements of temporal summation it is also well established that super-threshold stimulation leads to a sensation which persists in vision for some time after the termination of the stimulus4, again, for about 120 ms in daylight5,6. Perhaps the most direct ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/284164a0
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  • 4
    Digitale Medien
    Digitale Medien
    Biochemical basis for the continuous copulation of female Schistosoma mansoni (1980)
    [s.l.] : Nature Publishing Group
    Nature 283 (1980), S. 478-479 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] To detect which proteins were actually produced by the worms, S. mansoni of the NIH strain were perfused from C57BL/6B mice at 70 days post-infection, mechanically separated according to sex, and incubated for 24 h in medium HB597 (Connaught) with 10% fetal calf serum and 8 µCi ml-1 ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/283478a0
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  • 5
    Digitale Medien
    Digitale Medien
    Added noise restores recognizability of coarse quantized images (1983)
    [s.l.] : Nature Publishing Group
    Nature 305 (1983), S. 226-228 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] A detail of Leonardo's 'Mona Lisa' was digitized into 256 x 256 pixels, using a flying spot scanning system made up of a Cromemco microcomputer, an oscilloscope (Hewlett Packard 1335A), a lens and a photometer (Spectra Pritchard 1980A). The digitized file was transferred to a larger computer ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/305226a0
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  • 6
    Digitale Medien
    Digitale Medien
    Light isomerizes the chromophore of bacteriorhodopsin (1980)
    [s.l.] : Nature Publishing Group
    Nature 287 (1980), S. 351-353 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The absorption of a photon by light-adapted bacteriorhodopsin (bRLA), the purple membrane protein of the Halo-bacterium halobium, initiates a series of transformations13, reminiscent of the bleaching sequence of rhodopsin. The primary photochemical product, K, is a bathochromically shifted species; ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/287351a0
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  • 7
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    Liquid-phase dehydration of aqueous ethanol-gasoline mixtures (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1980-11-07
    Beschreibung: Two-phase mixtures of gasoline, water, and ethanol were dehydrated with both starch and saponified starch-g-polyacrylonitrile (HSPAN). Whereas starch absorbed ethanol as well as water, HSPAN selectively absorbed the water component, allowing ethanol to dissolve in the gasoline phase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fanta, G F -- Burr, R C -- Orton, W L -- Doane, W M -- New York, N.Y. -- Science. 1980 Nov 7;210(4470):646-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17815154" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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