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  • 42.80Qy  (1)
  • freezing  (1)
  • 1975-1979  (2)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Upconversion of λ=3.39 μm He-Ne laser radiation in two-photon resonantly pumped Na vapor (1978)
    Springer
    Applied physics 16 (1978), S. 209-210 
    Details
    ISSN: 1432-0630
    Keywords: 42.65-k ; 32.10Vc ; 42.80Qy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Upconversion of low-level ir radiation at 3.39 μm to the near ultraviolet at 330.5 nm has been obtained using the resonantly enhanced third-order nonlinearity of Na atoms. This enhancement has been achieved by two-photon resonant pumping of the nonallowed Na 3s–5s transition with a dye-laser radiation at 602.4 nm. Self-phase-matching has been observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00930389
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Techniques for long-term storage of human lymphocytes (1976)
    Springer
    Bulletin of experimental biology and medicine 81 (1976), S. 949-951 
    Details
    ISSN: 1573-8221
    Keywords: human lymphocytes ; freezing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract When lymphocytes stored in the frozen state are used in the lymphocytotoxic test the fraction of cells dying after thawing must not exceed 10–20%. The effect of various concentrations of dimethyl sulfoxide (DMSO), the composition of the medium, and other parameters accordingly was investigated in order to work out optimal conditions for freezing human lymphocytes. The best results were obtained by freezing the cells in autologous serum with 12.5% DMSO. However, sufficiently good results also were obtained by the use of AB serum and 20% bovine serum in Eagle's medium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00803034
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    Paper (German National Licenses)
    Fulltext
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