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  • 1
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Pharmacology 20 (1980), S. 259-284 
    ISSN: 0362-1642
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Fatigue & fracture of engineering materials & structures 6 (1983), S. 0 
    ISSN: 1460-2695
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract— The fatigue crack closure response was investigated for a surface crack in BS4360 50B structural steel, subjected to (1) constant amplitude loading and (2) constant amplitude loading interrupted by a single peak overload. A variety of compliance techniques was employed to determine closure behaviour. The crack mouth gauge measured the bulk, plane strain closure load, while the near tip strain gauge indicated the surface, plane stress closure response. For constant amplitude loading it was found that the surface regions of a surface crack are closed for a greater portion of the load cycle than the maximum depth point. A single peak overload caused different closure and growth rate transients at the surface of the thumbnail crack and at the maximum depth point. For growth rates above 10-6 mm/cycle, such behaviour agrees with the response of a through crack when subjected to constant amplitude loading, and a single peak overload.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Fatigue & fracture of engineering materials & structures 5 (1982), S. 0 
    ISSN: 1460-2695
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract— Accurate knowledge of defect sizes and crack shape development from initiating defects is essential for a realistic application of fracture mechanic? to the fatigue life prediction of welded joints. Defects at the toes of high quality longitudinal non-load-carrying fillet welded joints have been examined using two methods, and compared with those observed in plain unwelded plate. The defects observed at the weld toe were, on average, four times deeper than the largest observed in the unwelded plate but had similar root radii. For this particular geometry the defects could be considered continuous at the expected initiation site. A simple estimate of the stress concentrating effect of a single composite defect, coupled with experimental evidence, led to the conclusion that the proportion of total life spent in initiation is negligible for all stress levels which cause fatigue failure. Subsequent growth and crack shape development was observed to depend on the initial defect distribution and the complex stress field at the weld toe.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 38 (1982), S. 1611-1613 
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 290 (1981), S. 505-508 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] An acyl-plasmin, catalytically inert and therefore unable either to degrade systemic plasma proteins or react irreversibly with its principal plasma inhibitors (a 2-antiplasmin6 7 and a2-macroglobulin8), may still bind to a fibrin clot because the lysine/fibrin binding sites on the 'kringle' ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 24 (1983), S. 751-756 
    ISSN: 1432-1041
    Keywords: streptokinase ; fibrinolysis ; acyl enzymes ; BRL 26921
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary A new fibrinolytic agent, BRL 26921, a member of the novel class of thrombolytic agents; the acyl enzymes, has been compared with streptokinase. It has been shown that this new agent, which can bind to fibrin before releasing activator, does not result in clinically significant destruction of the haemostatic system when compared to an equivalent dose of streptokinase.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    International journal of fracture 24 (1984), S. 5-22 
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Résumé On considère des fissures en entaille et elliptiques soumises à des charges de cisaillement pur et des fissures elliptiques soumises à des charges de compression uniaxiale. On établit une comparaison des prédictions de l'angle d'extension initiale de la fissure, de la charge critique et des chemins de fissuration instables, en se basant sur les critères de la tension tangentielle maximale, de la tension principale tangentielle maximale, de la déformation tangentielle maximale et de la densité d'énergie de déformation. Les résultats présentés ici constituent un complément à ceux présentés dans la première partie de cette investigation. Certaines des prédictions théoriques ont été comparées avec des données disponibles dans la littérature. On montre que les quatre critères peuvent être appliqués de manière plus ou moins indifférente dans les cas étudiés pour prédire la direction de l'extension uniaxiale de la fissure ainsi que la charge critique. Néanmoins, les chemins de fissuration instables diffèrent selon les critères utilisés. La différence étant la plus grande dans le cas du critère de densité d'énergie de déformation. On trouve certaines difficultés à appliquer ce critère à certaines situations.
    Notes: Abstract Prediction of the angle of initial crack extension, critical load and unstable crack paths based on the criteria of maximum tangential stress (MTS), maximum tangential principal stress (MTPS), maximum tangential strain (MTSN), and strain energy density (SED) are compared for slit and elliptical cracks under pure shear loading and elliptical cracks under uniaxial compressive loading. Results presented here complement those in Part I of this investigation. Some of the theoretical predictions have been compared with data available in the literature. All the four criteria are found to be more or less equally applicable in the cases studied for the prediction of direction of initial crack extension and critical load. The unstable crack paths based on the four criteria differ, the difference being greatest for the SED criterion. Some difficulties are found on applying this criterion to some situations.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Résumé On compare dans les cas d'une fente oblique et de fissures elliptiques soumises à tension uniaxiale, les prédictions sur l'angle d'extension de la fissure, sur la charge critique et sur les chemins que suit la fissure instable, en se basant sur les critéres de la contrainte maximum tangentielle (CMT), de la dilatation maximale tangentielle (DMT) et de la densité d'énergie de déformation (DED). La contrainte tangentielle associée au critère CMT ne doit pas être une contrainte principale, et l'on suggère une nouvelle approche de ce critère. On propose un critère base sur la contrainte maximum tangentielle principale (CMTP) et on compare les prédictions que donnent ces deux critères. On indique certaines difficultés qui sont associées à l'application du critère DED et on suggère une base nouvelle permettant d'unifier tous les critères par rapport aux prédictions de charge critique. Certains des résultats obtenus sont comparés avec les données disponibles dans la littérature.
    Notes: Abstract Predictions for the angle of crack extension, critical load and unstable crack paths based on the criteria of maximum tangential stress (MTS), maximum tangential strain (MTSN) and strain energy density (SED) for angled slit and elliptical cracks under uniaxial tensile loading are compared. The tangential stress associated with the MTS criterion need not be a principal stress and a new approach to this criterion is suggested. A criterion based on maximum tangential principal stress (MTPS) is proposed. Predictions by these two criteria are compared. Some difficulties associated with the application of the SED criterion are indicated. A new basis, which permits a unification of all the criteria in respect of prediction of critical load, is suggested. Some of the results have been compared with data available in the literature.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Letters Edition 19 (1981), S. 309-314 
    ISSN: 0360-6384
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 10
    Publication Date: 1980-09-01
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
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