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  • 1980-1984  (4)
  • 1970-1974  (9)
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  • 1
    Buch
    Buch
    Concepts and applications of finite element analysis (1981)
    New York u.a. :Wiley,
    Details
    Titel: Concepts and applications of finite element analysis
    Autor: Cook, Robert D.
    Ausgabe: 2nd ed.
    Verlag: New York u.a. :Wiley,
    Erscheinungsjahr: 1981
    Seiten: 537 S.
    Materialart: Buch
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    ZIB Katalog
    Zuse-Institut Berlin get availability status
  • 2
    Digitale Medien
    Digitale Medien
    Pentacoordinate intermediates and the rate-determining step in displacement at phosphorus (1972)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 94 (1972), S. 9260-9261 
    Details
    ISSN: 1520-5126
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ja00781a064
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Mechanism of nucleophilic displacement at phosphorus in the alkaline hydrolysis of phosphinate esters (1973)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 95 (1973), S. 8088-8096 
    Details
    ISSN: 1520-5126
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ja00805a023
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Observations on glial cells within myelin sheaths in degenerating optic nerves (1974)
    Springer
    Journal of neurocytology 3 (1974), S. 737-751 
    Details
    ISSN: 1573-7381
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The occurrence of glial cells surrounded by myelin sheaths was investigated in cat and monkey optic nerves undergoing Wallerian degeneration. Occasionally, collapsed myelin sheaths were closely apposed to oligodendroglia. More often, small glial cells and their processes were completely surrounded by a myelin sheath. On the basis of ultrastructural appearance the cells were identified as being of three different types. One type had ‘light’ cytoplasmic processes and was comparable to astroglia. The cytoplasm of another type, with a dark granular cytoplasm and sparse rough endoplasmic reticulum, had characteristics of cells previously considered to be microglia, multipotential glia, ‘M’ cells or dark oligodendroglia. The third cell type contained numerous rosettes of ribosomes and an extensive rough endoplasmic reticulum, somewhat similar to cells previously described as medium oligodendroglia. The second and third cell types were considered to be oligodendroglia and the existence of a third glial element is questioned. Except in the later stages of degeneration (56 days and longer) the periodicity of the myelin remained normal. Evidence is presented to show that glial cells or their processes enter the myelin sheath at the node of Ranvier. It is suggested that the invading oligodendroglia are part of a population of ‘dormant’ cells.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01097195
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  • 5
    Digitale Medien
    Digitale Medien
    The fate of the axon and its terminal in the Pacinian corpuscle following sciatic nerve section (1974)
    Springer
    Journal of neurocytology 3 (1974), S. 385-403 
    Details
    ISSN: 1573-7381
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Central nerve fibres of Pacinian corpuscles of the cat were examined by semiserial sections 2, 3, 4, 5, 6 and 9 days after sciatic nerve cut. Axons of the Pacinian corpuscles showed degenerative changes 4 days after transsection and the removal of axonal and myelin debris was almost completed within 9 days. Axonal degeneration was characterized by disintegration of filaments and tubules, disruption of axolemma, swelling of mitochondria and loss of filopod processes in the terminal axon. Selective preservation of filaments in local areas of terminal axons was found in some corpuscles. The myelinated portions of the nerve fibre were removed by Schwann cells and the unmyelinated terminal portions by inner core lamellar cells. Mitochondria and other degenerated axoplasmic organelles of the terminal axon formed dense bodies following their engulfment by lamellar cells. The unmyelinated portion of the axon was removed faster than the myelinated. The rate of removal of axonal debris varied along the length of both the unmyelinated and myelinated portions of the nerve fibre. Similarity in the behaviour and morphology of reactive lamellar and Schwann cells points to the possibility of the common derivation of these cells.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01097920
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  • 6
    Digitale Medien
    Digitale Medien
    Some modifications of an isoparametric shell element (1973)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 7 (1973), S. 401-405 
    Details
    ISSN: 0029-5981
    Schlagwort(e): Engineering ; Engineering General
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Mathematik , Technik allgemein
    Notizen: The subject of this paper is the eight-node shell element of Reference 1. The following options in element formulation are discussed: an alternate form of co-ordinate transformation between global and shell co-ordinates, use of stiffness coefficients for sandwich construction and inclusion of internal degrees of freedom. Numerical examples show the effects of adding internal freedoms, and serve to compare stresses calculated directly at element nodes with those obtained by extrapolation from values at the Gauss points.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/nme.1620070315
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  • 7
    Digitale Medien
    Digitale Medien
    Control of spurious modes in the nine-node quadrilateral element (1982)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 18 (1982), S. 1576-1580 
    Details
    ISSN: 0029-5981
    Schlagwort(e): Engineering ; Engineering General
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Mathematik , Technik allgemein
    Notizen: The nine-node quadrilateral is much more accurate than its eight-node relative if elements are non-rectangular. However, the nine-node element may display spurious low-energy modes under 2 × 2 Gauss quadrature. These modes can be controlled by using the 3 × 3 quadrature rule, but at added cost. This paper investigates two inexpensive control devices that can be used with 2 × 2 Gauss quadrature.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/nme.1620181012
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  • 8
    Digitale Medien
    Digitale Medien
    Observations regarding assumed-stress hybrid plate elements (1974)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 8 (1974), S. 513-519 
    Details
    ISSN: 0029-5981
    Schlagwort(e): Engineering ; Engineering General
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Mathematik , Technik allgemein
    Notizen: Edge displacement of assumed-stress hybrid plate elements are commonly chosen as either linear, quadratic or cubic functions of the edge co-ordinate. The present paper examines the effect of this choice on the acceptability, accuracy, and possible zero energy modes of elements based on a linear stress field. It is concluded that triangular elements may be preferable to quadrilaterals, and that linear edge displacements are not desirable.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/nme.1620080307
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  • 9
    Digitale Medien
    Digitale Medien
    Two hybrid elements for analysis of thick, thin and sandwich plates (1972)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 5 (1972), S. 277-288 
    Details
    ISSN: 0029-5981
    Schlagwort(e): Engineering ; Engineering General
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Mathematik , Technik allgemein
    Notizen: Two general quadrilateral elements for plate bending are developed. Each has 12 degrees of freedom and accounts for transverse shear deformation effects. Each is built from four triangular elements whose properties are derived by the assumed-stress hybrid approach. Matrices needed to generate the stiffness properties of the triangular elements are explicitly stated so as to facilitate their use. Numerical test cases, in which shear deformation effects range from negligible to very important, are used to illustrate the behaviour of the elements. It is concluded that the simpler of the two quadrilaterals is one of the best plate elements currently available.
    Zusätzliches Material: 7 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/nme.1620050213
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  • 10
    Digitale Medien
    Digitale Medien
    A note on certain incompatible elements (1973)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 6 (1973), S. 146-147 
    Details
    ISSN: 0029-5981
    Schlagwort(e): Engineering ; Engineering General
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Mathematik , Technik allgemein
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/nme.1620060117
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