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  • 1
    Electronic Resource
    Electronic Resource
    Control of Degradation in Oil-Extended Styrene Butadiene Rubber (1958)
    s.l. : American Chemical Society
    Industrial & engineering chemistry 50 (1958), S. 785-792 
    Details
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ie50581a034
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  • 2
    Electronic Resource
    Electronic Resource
    Study of 2-Naphthol-Hexamethylenetetramine Condensation Products (1956)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 78 (1956), S. 805-808 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01585a027
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  • 3
    Electronic Resource
    Electronic Resource
    The Local Interstellar Medium (1987)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Astronomy and Astrophysics 25 (1987), S. 303-344 
    Details
    ISSN: 0066-4146
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.aa.25.090187.001511
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  • 4
    Electronic Resource
    Electronic Resource
    Amides, Imides and Peptides (1944)
    [s.l.] : Nature Publishing Group
    Nature 154 (1944), S. 735-735 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN suggesting the term ‘polypeptides’ for describing condensates of amino-acids at large, Dr. Jordan Lloyd1 is seemingly extending the meaning of the word beyond that originally proposed by Emil Fischer2, who introduced it for the condensates of α-amino-acids. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/154735a0
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  • 5
    Electronic Resource
    Electronic Resource
    Anhydro-N-Carboxy- DL -β-Phenylalanine (1950)
    [s.l.] : Nature Publishing Group
    Nature 165 (1950), S. 647-647 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] By this route it has been possible to prepare the anhydro-N-carboxy derivatives of glycine, DL-{3-phenylalanine, a-aminoisobutyric acid and L-leucine. During the preparation of the glycine derivative, the presence of N-carboxymethylcarbamyl chloride (I, R = H) was shown by addition of aniline to ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/165647a0
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  • 6
    Electronic Resource
    Electronic Resource
    Accretion of low-metallicity gas by the Milky Way (1999)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 402 (1999), S. 388-390 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Models of the chemical evolution of the Milky Way suggest that the observed abundances of elements heavier than helium (‘metals’) require a continuous infall of gas with metallicity (metal abundance) about 0.1 times the solar value. An infall rate integrated over the entire disk of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/46498
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  • 7
    Electronic Resource
    Electronic Resource
    Hexuronic Acid as the Antiscorbutic Factor (1932)
    [s.l.] : Nature Publishing Group
    Nature 129 (1932), S. 576-577 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE ‘hexuronic acid’ prepared from suprarenal glands by Prof. Szent-Györgyi was a cream-coloured micro-crystalline powder, m.p. 184°–187° (decomp.). On recrystallisation from methyl alcohol-ether the substance was obtained in irregular aggregates of rectangular crystals, which were almost ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/129576c0
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  • 8
    Electronic Resource
    Electronic Resource
    Hexuronic Acid as the Antiscorbutic Factor (1932)
    [s.l.] : Nature Publishing Group
    Nature 130 (1932), S. 888-888 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A CHARACTERISTIC property of Prof. Szent-Györgyi's hexuronic acid is its behaviour towards iodine. Two atoms of iodine are taken up in aqueous solution (neutral or acid) with formation of two molecules of hydrogen iodide. We find that this is due to oxidation at a double bond. The intervention ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/130888a0
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  • 9
    Electronic Resource
    Electronic Resource
    Imaging myelinated nerve fibres by confocal fluorescence microscopy: individual fibres in whole nerve trunks traced through multiple consecutive internodes (1994)
    Springer
    Journal of neurocytology 23 (1994), S. 555-564 
    Details
    ISSN: 1573-7381
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Current methods of morphological analysis do not permit detailed imaging of individual myelinated fibres over substantial lengths without disruption of neighbouring, potentially significant, cellular and extracellular relationships. We report a new method which overcomes this limitation by combining aldehyde-induced fluorescence with confocal microscopy. Myelin fluorescence was intense relative to that from other tissue components, enabling individual myelinated nerve fibres to be traced for distances of many millimeters in whole PNS nerve trunks. Images obtained with a Bio-Rad MRC-600 confocal laser scanning microscope clearly displayed features of PNS and CNS myelinated fibres including nodes of Ranvier; fibre diameter; sheath thickness and contour; branch points at nodes; as well as (in the PNS) Schmidt-Lanterman incisures and the position of Schwann cell nuclei. Direct comparisons using the same specimens (whole nerve trunks; also teased fibres) showed confocal imaging to be markedly superior to conventional fluorescence microscopy in terms of contrast, apparent resolution and resistance to photobleaching. Development of the fluorophore was examined systematically in sciatic nerves of young adult rats. In separate experiments, animals were perfused systemically using (1) 5% glutaraldehyde; (2) Karnovsky's solution; (3) 4% paraformaldehyde; buffered with either 0.1 M sodium phosphate or sodium cacodylate (pH 7.4). The concentration of glutaraldehyde in the fixative solution was the principal determinant of fluorescence intensity. Confocal imaging was achieved immediately following perfusion with 5% glutaraldehyde or Karnovsky's. Fluorescence intensity increased markedly during overnight storage in these fixatives and continued to increase during subsequent storage in buffer alone. The fluorophore was stable and resistant to fading during storage (15 months at least), enabling data collection over extended periods. To demonstrate application of the method in neuropathology, individual fibres in transected sciatic nerve trunks were traced through multiple successive internodes: Classical features of Wallerian degeneration (axonal swelling and debris; ovoid formation and incisure changes; variation among fibres in the extent of degeneration) were displayed. The method is compatible with subsequent ultrastructural examination and will complement existing methods of investigation of myelinated fibre anatomy and pathology, particularly where preservation of 3-dimensional relationships or elucidation of spatial gradients are required.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01262056
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  • 10
    Electronic Resource
    Electronic Resource
    Synthesis and properties of a new polyether: Poly-3,3-bis(chloromethyl)-1-oxabutene (1954)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 12 (1954), S. 503-507 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: 3,3-Bis(chloromethyl)oxacyclobutane may be polymerized in the presence of powerful electrophilic catalysts, e.g., boron trifluoride; minute traces of water are also necessary for polymerization to proceed. The resulting polyether, poly-3,3-bis(chloromethyl)-oxabutene, is an inert, highly crystalline and insoluble polymer, m.p. 180°, capable of forming oriented films and fibers. The high crystallinity and strong interchain forces are reflected by the complete inconsistency of solution viscosity values measured at 100°. The molecular weights could only be compared by determining melt viscosity values.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1954.120120142
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