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  • Digitale Medien  (8)
  • 1970-1974  (7)
  • 1935-1939  (1)
  • 1915-1919
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Materialart
  • Digitale Medien  (8)
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  • 1
    Digitale Medien
    Digitale Medien
    Anticholinesterase activity and enzymatic degradation of phosphamidon and γ-chlorophosphamidon a comparative study (1971)
    Springer
    Bulletin of environmental contamination and toxicology 6 (1971), S. 205-208 
    Details
    ISSN: 1432-0800
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Energietechnik , Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01539928
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  • 2
    Digitale Medien
    Digitale Medien
    Environmental Education (1973)
    [s.l.] : Nature Publishing Group
    Nature 242 (1973), S. 214-214 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR,-This Institution is now carrying out a survey of current and anticipated provisions at establishments of higher and further education and at schools in the field of education in environmental subjects. A substantial proportion of these establishments have already replied and the information ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/242214b0
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  • 3
    Digitale Medien
    Digitale Medien
    Strain-optic law for a certain class of birefringent composites (1974)
    Springer
    Experimental mechanics 14 (1974), S. 355-360 
    Details
    ISSN: 1741-2765
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Abstract A strain-optic law for a certain class of birefringent fiber-reinforced composite materials is developed. The strain-optic law requires both mechanical and optical characterization of the material. Previous investigations have hypothesized the existence of three independent optical properties for the anisotropic birefringent material. The strain-optic relation developed in this study, however, requires only a single strain-optic coefficient, coupled with four independent mechanical material properties, for prediction of the optical response of a birefringent anisotropic material. Experimental results are presented which show good agreement with the developed strain-optic relation. Finally, the isoclinic parameter is investigated and preliminary evidence is presented which indicates a correspondence between principal-strain direction and optical isoclinic angle.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02323561
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  • 4
    Digitale Medien
    Digitale Medien
    Study of cylindrical stress waves generated by exploding wires (1972)
    Springer
    Experimental mechanics 12 (1972), S. 104-106 
    Details
    ISSN: 1741-2765
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Abstract An experimental technique utilizing high-pressure gas from an exploding wire is used to load long, hollow, thick-walled cylinders from the inside. Resulting plane-strain cylindrical stress waves are one-dimensional in nature. Asimultaneity of impact is studied with methods of high-speed photography and dynamic photoelasticity.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02408447
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  • 5
    Digitale Medien
    Digitale Medien
    Longitudinal impact of cylindrical shells (1972)
    Springer
    Experimental mechanics 12 (1972), S. 25-31 
    Details
    ISSN: 1741-2765
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Abstract The transient response due to longitudinal impact of three aluminum cylindrical shells of different thickness-to-radius ratios is studied both analytically and experimentally. The analyses were obtained from method of characteristics' solutions of two sets of equations: one which includes the transverse shear, radial inertia and rotary inertial effects; and the other set is from a modified membrane theory. Experimentally, longitudinal and circumferential strains are monitored along the length of each of the shells; the velocity of the impacter ring is also measured. The experimental results of this study indicate that the wavefront, after traveling three diameters from the impacted end, propagates at essentially the plate velocity, in agreement with the theory. In addition, the longitudinal and circumferential strains calculated from the two theories are in good agreement with the experimental results.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02320786
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  • 6
    Digitale Medien
    Digitale Medien
    Elastic-wave propagation in a joined cylindrical-conical-cylindrical shell (1973)
    Springer
    Experimental mechanics 13 (1973), S. 150-156 
    Details
    ISSN: 1741-2765
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Abstract The problem of longitudinal impact of a thin finite-joined shell, consisting of a cylinder-truncated cone-cylinder, is analyzed both experimentally and analytically. the model analyzed is a 1/100-scale replica of a portion of the Apollo/Saturn V vehicle. Experimental results were obtained from a drop-test system. Longitudinal and circumferential strain pulses were monitored on each section of the joined shell. The velocity of the impacter ring prior to impact was measured and used as a boundary condition in the solution of the governing partial-differential equations. A “bending” theory, including transverse-shear, radial-inertia and rotary-inertia effects, was used to analyze the finite-joined shell. Appropriate transformation relations were developed at each of the joints between the cylinders and truncated cone. The results were then obtained by solving the governing equations numerically by the method of characteristics. Good agreement between analytical and experimental strain profiles was obtained.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02322668
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  • 7
    Digitale Medien
    Digitale Medien
    A technique for generating shear waves in cylindrical shells under radial impact (1974)
    Springer
    Experimental mechanics 14 (1974), S. 417-419 
    Details
    ISSN: 1741-2765
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Abstract Experimental techniques are developed to study and measure the shear-wave velocity in an aluminum cylindrical shell subjected to a radial impact. The radial impact is obtained by exploding an electrical detonator inserted in plastic plugs mounted on the end of the shell. Strain gages, mounted on the outside surface of the shell at various axial locations, are used to obtain oscilloscope traces from which the shear-wave velocity can be calculated.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02324947
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  • 8
    Digitale Medien
    Digitale Medien
    Zur Kenntnis der Diterpene. 35. Mitteilung. Oxydativer Abbau der Lävo-pimarsäure und ihres Additionsproduktes an Maleinsäure-anhydrid (1938)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 21 (1938), S. 583-591 
    Details
    ISSN: 0018-019X
    Schlagwort(e): Chemistry ; Organic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/hlca.19380210179
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