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  • 1
    Electronic Resource
    Electronic Resource
    A Hypothesis of Contraction in Striated Muscle (1960)
    [s.l.] : Nature Publishing Group
    Nature 187 (1960), S. 388-391 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WE wish to suggest a mechanism by which the system of sliding filaments in striated muscle, proposed by H. E. Huxley and Hanson1 and by A. F. Huxley and Niedergerke2, might be caused to exert a contractile force during excitation. The mechanism is probably also applicable to those smooth muscles ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/187388a0
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  • 2
    Electronic Resource
    Electronic Resource
    Small-Angle X-Ray Diffraction Patterns of Collagen (1955)
    [s.l.] : Nature Publishing Group
    Nature 175 (1955), S. 811-811 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A particularly interesting feature of the diffraction patterns was the appearance of relatively strong reflexions at the nineteenth and twentieth orders for dry fibres and at the twentieth and twenty-first orders for wet fibres. These results are set out in Table 1, in which the intensity scale is ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/175811a0
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  • 3
    Electronic Resource
    Electronic Resource
    Conceptual Model for the Force–Velocity Relation of Muscle (Hill's Equation) (1962)
    [s.l.] : Nature Publishing Group
    Nature 193 (1962), S. 1283-1284 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It will be shown that, if one assumes that muscle contracts as a result of a series of impulsive forces delivered during a nerve pulse, then Hill's equation is readily obtained. This idea may not refer to a particular physico-chemical system, but it is possible to propose various mechanisms for ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1931283a0
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  • 4
    Electronic Resource
    Electronic Resource
    Structure of Photoreceptor Membranes (1974)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 3 (1974), S. 53-81 
    Details
    ISSN: 0084-6589
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.bb.03.060174.000413
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  • 5
    Electronic Resource
    Electronic Resource
    Low angle X-ray diffraction patterns of squid retina (1976)
    [s.l.] : Nature Publishing Group
    Nature 262 (1976), S. 626-628 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the squid the rhabdomere structures of the retinula cells7 are contained within the distal segments8 (by analogy with the retinal rod outer segments of vertebrates). Electron micrographs7,8 of the distal segments of squid show an array of microvilli and show that the long axes of the microvilli ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/262626a0
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  • 6
    Electronic Resource
    Electronic Resource
    Electron Density Model for Nerve Myelin (1968)
    [s.l.] : Nature Publishing Group
    Nature 218 (1968), S. 87-88 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Our nerve model contains the familiar triple layered membrane unit consisting of a layer of lipid of thickness I and electron density L with the surfaces covered by a layer of non-lipid or protein of thickness p and electron density P. A bimolecular leaflet of lipid is thought to be present in the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/218087a0
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  • 7
    Electronic Resource
    Electronic Resource
    X-RAY STUDIES ON NERVE AND PHOTORECEPTORS (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 195 (1972), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1972.tb54810.x
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  • 8
    Electronic Resource
    Electronic Resource
    Sampling-theorem expressions in membrane diffraction (1988)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 21 (1988), S. 322-325 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: Biological membrane assemblies with two membranes per unit cell and with well defined fluid layers are treated. In membrane diffraction the minus fluid model is used. A method for the determination of the zero-order amplitude using knowledge of the membrane-pair width is described. Sampling-theorem expressions for the Fourier transform of the individual membranes are derived. These expressions simplify the structural analysis and the interpretation of modified and disordered membrane systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0021889888002547
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  • 9
    Electronic Resource
    Electronic Resource
    Intensity corrections for one-dimensional structure determination (1980)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 13 (1980), S. 585-590 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: Procedures for correcting experimental diffraction intensities in the small-angle region for the determination of one-dimensional structures are presented. The diffraction patterns in question consist of meridional streaks which are transversely broadened due to: (1) finite fibril radius, (2) imperfect fibrillar orientation, (3) lamellar curvature or (4) instrumental broadening. Three methods are developed and compared for obtaining corrected intensities in the presence of these effects. One method uses direct integration over all reciprocal space. Two complementary techniques involve correction of integrated layer line or meridional peak intensities; the correction factors are shown to be the transverse integral widths of the layer lines, suitably modified for instrumental broadening.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0021889880012800
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  • 10
    Electronic Resource
    Electronic Resource
    Deconvolution analysis in membrane diffraction using the modulus of the continuous Fourier transform (1981)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 14 (1981), S. 383-386 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: A method of deconvolution using the modulus of the continuous Fourier transform of the unit cell is described. This method differs from previous deconvolution methods in membrane diffraction in that calculations are carried out in reciprocal space. The modulus profile is obtained from the continuous intensity transform which is itself the Fourier transform of the autocorrelation function. Sampling theorem methods are used to reconstruct the continuous Fourier transform of the unit cell. The various phase choices are examined and compared. In membrane diffraction, the autocorrelation function is derived in two distinct situations: when the interference function is broad as in the case of a few unit cells and when the membrane systems contain wide regions of constant electron density. It is concluded that, in the first situation, the derived autocorrelation function contains missing information and is incorrect. On the other hand, in the second situation, the derived autocorrelation function is a good representation of the true autocorrelation function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0021889881009643
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