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  • 2000-2004  (54)
  • 1960-1964  (3)
  • 1915-1919  (19)
  • 1
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 347-349 (May 2000), p. 156-160 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 194 (1962), S. 444-446 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ALTHOUGH it is generally agreed that ribosomal /JL ribonucleic acid (UNA) when first isolated consists of two components having sedimentation constants of approximately 16 and 23 S, several investigators have reported that these high-molecular-weight components represent aggregates of low molecular ...
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  • 3
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 80 (2002), S. 55-57 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: It is demonstrated that the intrinsic stress in cubic boron nitride films can be significantly relaxed during growth by simultaneous medium-energy ion implantation. The stress in the growing film has been studied in situ using cantilever curvature measurements and has been reduced to below 2 GPa by simultaneous Ar+ or N+ ion implantation with an energy of 70 and 35 keV, respectively. The resulting cubic boron nitride films show an increased long-term stability. The results reveal that the stress in cBN is not reduced due to segregation of boron at grain boundaries. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 76 (2000), S. 2194-2196 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A model for the transport of nitrogen in austenitic stainless steel at temperatures around 400 °C is presented and discussed. The model considers the diffusion of nitrogen under the influence of trapping and detrapping at trap sites formed by local chromium. Nitrogen depth profiles simulated on the basis of the model with diffusion and detrapping activation energies of 1.1 and 1.45 eV, respectively, are in good agreement with experimental nitrogen profiles. © 2000 American Institute of Physics.
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  • 5
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 76 (2000), S. 1404-1406 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The mechanism of diffusional transport during low-energy ion nitriding of aluminum has been investigated using marker and isotope sequence techniques in connection with ion-beam analysis. For an ion energy of 1 keV and a temperature of 400 °C, it is shown that the nitride grows at the surface with aluminum being supplied by diffusion from the underlying bulk. © 2000 American Institute of Physics.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 22 (1918), S. 155-163 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 25 (1919), S. 101-109 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Zusammenfassung Die bei der Diffusion von Natronlauge in mit Formaldehyd gegerbten Gelatine-Chlornatrium-Gallerten entstehenden Schrumpfungs-Strukturen sind auf innere strukturelle Veränderungen der Mizellarverbände der Gallerte zurückzuführen. Das in dünner Schicht im voraus gegerbte Häutchen der Gallerte schmiegt sich dabei eng den inneren groben Strukturelementen an und folgt vollständig den Richtungen, welche den gröberen inneren Strukturbildungen zugrunde liegen. Bei Spannungen entstehen demnach radial nach dem Diffusionszentrum zu gerichtele Schrumpfungslinien und bei Zusammenziehung der Mizellarverbände entstehen konzentrische Ringsysteme. Abweichungen und Strukturstörungen innerhalb dieser Schrumpfungs-Struktursysteme können durch winzige, aus den feinen Poren der Oberfläche des Häutchens austretende Natronlaugetröpfchen verursacht werden, indem diese als selbständige Diffusionszentren nicht nur sich gegenseitig, sondern auch bereits vorhandene Diffusionsfelder beeinflussen. Aber auch diejenigen inneren Teile, die zu diesen neuen Diffusionszentren gehören, unterliegen denselben Gesetzen struktureller Veränderung wie das Hauptdiffusionszentrum.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 25 (1919), S. 67-74 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Zusammenfassung Die Kristallisations-Erscheinungen in der Formaldehyd-Gelatine-Gallerte sind auf die orientierenden Einflüsse der Formaldehyd-Kondensation und Polymerisations-Produkte auf die Mizellen der α-Gelatine zurückzuführen. Bei den beobachteten kugelförmigen Kristallbildungen ist die Lage der einzelnen Mizellen eine radiale in Form von konzentrischen Kugelschalen, und verhält sich dementsprechend das Gebilde optisch genau so wie ein Kristalltropfen. Die zahlreichen hiervon abweichenden Formen kommen durch Deformation infolge Spannungs-Erscheinungen während des Eintrocknens der Gallerte zustande, wobei die Anordnung der Mizellen sich mehr und mehr der fibrillaren Struktur nähert. Dieselbe fibrillare Struktur besitzen auch die bei abweichender Versuchsanordnung erhaltenen Sphärokristalle.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 49 (1962), S. 181-181 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 20 (1917), S. 242-250 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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