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  • 11
    Electronic Resource
    Electronic Resource
    Effect of Mercury on the Growth of Chlamydomonas reinhardtii (1997)
    Springer
    Bulletin of environmental contamination and toxicology 59 (1997), S. 828-833 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001289900556
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  • 12
    Electronic Resource
    Electronic Resource
    Effect of Barium and Nickel on the Growth of Anacystis nidulans (1996)
    Springer
    Bulletin of environmental contamination and toxicology 56 (1996), S. 985 -992 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001289900142
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  • 13
    Electronic Resource
    Electronic Resource
    Effect of Thallium on the Growth of Anacystis nidulans and Chlamydomonas reinhardtii (2000)
    Springer
    Bulletin of environmental contamination and toxicology 64 (2000), S. 565-573 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001280000040
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  • 14
    Electronic Resource
    Electronic Resource
    Effect of Selenium on the Growth of the Cyanobacterium Anacystis nidulans (1999)
    Springer
    Bulletin of environmental contamination and toxicology 62 (1999), S. 591-599 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001289900916
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  • 15
    Electronic Resource
    Electronic Resource
    Enzymatic assembly of slow reacting substance (1980)
    [s.l.] : Nature Publishing Group
    Nature 287 (1980), S. 51-52 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The experiments were carried out with 10,000g supernatant of RBL-1 homogenates5'6. The buffer used for the preparation contained 50 mM phosphate pH7, 1 mM EDTA, 0.1% gelatin and 14 jxM indomethacin. Briefly, RBL-1 cells were washed once with buffer, resuspended at 5 x 107 cells per ml and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/287051a0
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  • 16
    Electronic Resource
    Electronic Resource
    Finite deformation formulation of a shell element for problems of sheet metal forming (1991)
    Springer
    Computational mechanics 7 (1991), S. 397-411 
    Details
    ISSN: 1432-0924
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract An elastic-plastic thin shell finite element suitable for problems of finite deformation in sheet metal forming is formulated. Hill's yield criterion for sheet materials of normal anisotropy is applied. A nonlinear shell theory in a form of an incremental variational principle and a quasi-conforming element technique are employed in the Lagrangian formulation. The shell element fulfills the inter-element C 1 continuity condition in a variational sense and has a sufficient rank to allow finite stretching, rotation and bending of the shell element. The accuracy and efficiency of the finite element formulation are illustrated by numerical examples.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00350168
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  • 17
    Electronic Resource
    Electronic Resource
    Fracture toughness and crack instability in tough polymers under plane strain conditions (1987)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 27 (1987), S. 1128-1136 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The plane strain fracture toughness and fracture mechanisms of several tough engineering plastics have been studied and compared with poly(methyl methacrylate) (PMMA), a relatively brittle polymer. The tough polymers all are observed to form a multiple craze zone at the crack tip, which is shown to be the primary source of plane strain fracture toughness in these materials. The multiple craze zone is retained during slow crack growth but is metastable, and at a critical stress intensity and associated crack velocity, the system passes through a transition to a greatly accelerated single craze mode of unstable propagation.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760271504
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  • 18
    Electronic Resource
    Electronic Resource
    On fracture mechanics in lifting an ice sheet (1985)
    Springer
    International journal of fracture 28 (1985), S. 189-197 
    Details
    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 En faisant pénétrer un outil en forme de coin à l'interface entre un film de glace et le substrat sur lequel il est déposé sur une épaisseur uniforme, il peut se développer dans cet interface une fissure semi-elliptique. On fait appel au concept d'équilibre énergétique de Griffith afin de déterminer les conditions critiques pour que se propage la fissure. Les résultats démontrent que, quelle que soit sa forme, une fissure interfaciale semi-elliptique tend à se propager de manière stable, et à atteindre une forme critique pour laquelle la propagation devient instable. Des ruptures transversales dans le film de glace peuvent avoir pour effet d'interrompre la propagation de la fissure.
    Notes: Abstract The penetration of a wedge-like tool into an ice sheet at the interface with its substrate may develop a semi-elliptic interfacial crack. The Griffith energy-balance concept is employed to determine the critical conditions for interfacial crack propagation. The results show that an interfacial crack of any semi-elliptic shape tends to propagate in a stable manner and change the shape to a critical shape at which the propagation becomes unstable. The interfacial crack propagation may be interrupted by transverse fractures in the ice sheet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00018492
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  • 19
    Electronic Resource
    Electronic Resource
    Strain-gage measurements in regions of high stress gradient (1961)
    Springer
    Experimental mechanics 1 (1961), S. 199-200 
    Details
    ISSN: 1741-2765
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02323892
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  • 20
    Electronic Resource
    Electronic Resource
    Yielding of 6061-T6 aluminum tubings under dynamic biaxial loadings (1979)
    Springer
    Experimental mechanics 19 (1979), S. 200-206 
    Details
    ISSN: 1741-2765
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A test vehicle described herein has been developed for applying biaxial, tension-internal pressure, loading to thinwalled tubular specimens over a range of loading rates. The dynamic responses, as well as static initial and subsequent yield surfaces of a number of specimens made of 6061-T6 aluminum alloy, are presented. The stress path obtained in a dynamic biaxial test was reporduced statically. The corresponding stress-strain curves have been compared and found significantlky different. It is found that the dynamic initial yielding occurs at a higher state of biaxial stress depending on the loading rate than that of static yielding.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02324982
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