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  • 1990-1994  (3)
  • 78.65  (1)
  • Capillary regeneration  (1)
  • Polymer and Materials Science  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Effect of low energy laser on the growth and regeneration of capillaries (1990)
    Springer
    Lasers in medical science 5 (1990), S. 381-386 
    Details
    ISSN: 1435-604X
    Keywords: HeNe laser irradiation ; Biostimulation ; Wound healing ; Capillary regeneration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Physics , Technology
    Notes: Abstract Laser light of low energy is discussed to have an accelerating effect on wound healing. The aim of the present study was to proof whether HeNe laser irradiations have a positive effect on regeneration of capillaries. For this purpose aluminium chambers were implanted in the dorsal skin flap of Syrian hamsters. After coagulation of blood vessels by means of an argon laser the tissue was irradiated daily with the low energy light of a HeNe laser. Regeneration of capillaries was studied by means of intravital microscopy. The results of the study revealed a positive effect of low dose HeNe laser irradiation on the regeneration of capillaries at day 5 after the coagulation. The measurable part of the capillaries was about 27% higher for the irradiated animals compared to controls.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02032595
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  • 2
    Electronic Resource
    Electronic Resource
    Characterization of conducting GaAs multilayers by infrared spectroscopy at oblique incidence (1990)
    Springer
    Applied physics 50 (1990), S. 7-12 
    Details
    ISSN: 1432-0630
    Keywords: 78.20 ; 78.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The electrical and geometric properties of GaAs multilayer structures are measured nondestructively by infrared reflectance spectroscopy (50–5000 cm−1). Using oblique incidence and both s- and p-polarizations of the probing beam, carrier concentration and thickness of the epitactic films as well as the carrier concentration of the GaAs substrate are determined. The main structures in the spectra are due to phonon reststrahlen bands, Fabry-Perot interferences and the zeros of the dielectric function leading to dips in the reflectance (Berreman Mode). The results compare favorably with a depth-resolved secondary ion mass spectrometric (SIMS) sample analysis. The range of applicability of the method is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00323946
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Zeitstandverhalten einiger fortschrittlicher Schaufelwerkstoffe für IndustriegasturbinenAuszug aus einer beim Fachbereich Maschinenbau der Technischen Hochschule Darmstadt einzureichenden Dr.-Ing. Diss. von M. Maier (1994)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 25 (1994), S. 273-283 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Creep rupture behaviour of some advanced materials for industrial gas turbinesThe creep rupture behaviour of three DS-alloys, an ODS-alloy and a PM-alloy for gas turbine blades is investigated up to 20 000 h test duration. Further, the elastoplastic behaviour is determined in tensile tests and the contraction behaviour in long-term annealing tests. On this basis, a characterisation of the strength and partly a modelling of the deformation behaviour of the alloys is given.
    Notes: Das Zeitstandverhalten von drei Ds-Werkstoffen, einem ODS-Werkstoff und einer PM-Legierung für Gasturbinenschaufeln wird in Versuchen bis zu 20 000 h Dauer ermittelt. Ferner wird das elasto-plastische Kurzzeitverhalten in Warmzugversuchen und das Kontraktionsverhalten in langzeitigen Glühversuchen bestimmt. Auf dieser Grundlage erfolgt eine Beschreibung des Festigkeits-und teilweise auch des Verformungsverhaltens der untersuchten Werkstoffe im Hochtemperaturbereich.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19940250704
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    Paper (German National Licenses)
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