WILBERT

Wildauer Bücher+E-Medien Recherche-Tool

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Book
    Book
    Lohmar ; Köln : Eul
    Associated volumes
    Person(s): Brüning, Ralf
    Keywords: Klein- und Mittelbetrieb ; Electronic Commerce ; Strategisches Management ; Portal (Internet) ; Hochschulschrift ; Klein- und Mittelbetrieb ; Electronic Commerce ; Strategisches Management ; Portal 〈Internet〉
    Type of Medium: Book
    Pages: XII, 169 S. , graph. Darst. , 21 cm, 278 gr.
    Edition: 1. Aufl.
    ISBN: 3899363809
    Series Statement: Reihe Electronic Commerce 31
    RVK:
    RVK:
    Language: German
    Dissertation note: Zugl.: Köln, Univ., Diss., 2005
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Hyperfine interactions 55 (1990), S. 917-920 
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Mössbauer spectroscopy has been used to measure changes associated with structural relaxation in the glass Pd40Ni40P20. When taken with data from X-ray diffraction, the results characterize the differences between irreversible and reversible relaxation, and show that the latter involves at least two distinct processes.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Hyperfine interactions 55 (1990), S. 911-915 
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report the first Mössbauer spectra of a metallic glass obtained above the glass transition temperature (T G ). The temperature at which both the Lamb-Mössbauer factor and the average quadrupole splitting decrease sharply is in agreement withT G determined by thermal and mechanical measurements, but the width of the quadrupole splitting distribution starts to increase at a much lower temperature. These results are compared with data from similar measurements on more conventional glasses.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 89 (2001), S. 3215-3222 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Vitreous selenium is used extensively for light detection. Its photoconducting properties are altered by structural relaxation near room temperature. X-ray diffraction, densiometry, and calorimetry are used to determine the change of the glass state during relaxation. Annealing for 24 h at 300 K increases the density by 0.14% and lowers the enthalpy by 105 J/mol. The structure factor of cast samples was measured before and after annealing, and reverse Monte Carlo models of the structure of selenium glass were generated to match the data for the quenched and annealed states. Atoms in amorphous selenium are arranged in randomly oriented chains. In the model clusters annealing effects are found by analyzing inter- and intrachain distances, bond angle distributions, and dihedral angle distributions. The average bond length remains unchanged upon annealing, while the distribution of bond lengths becomes narrower by 1.2%. Distances between atoms in adjacent chains decrease by about 0.03%, i.e., the selenium chains move closer together, and the distribution of interchain distances becomes narrower. Bond angles within the chains are affected slightly. The mean bond angle decreases by 0.016°, which indicates a greater folding of the selenium chains and represents an evolution towards the angles found in crystalline selenium phases. The bond angle distribution for the annealed state is 0.006° narrower. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...