Research Catalog

  • Positron lifetime measurements in chiral nematic liquid crystals [microform] / Jag J. Singh, Abe Eftekhari, Devendra S. Parmar.

    • Text
    • [Washington, DC] : National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program ; [Springfield, Va. : For sale by the National Technical Information Service], 1991.
    • 1991
  • Positron lifetime positroscopy for investigation of thin polymer coating [microform] / Jag J. Singh, Abe Eftekhari, Danny R. Sprinkle.

    • Text
    • [Washington, DC] : National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program ; [Springfield, Va. : National Technical Information Service, distributor], 1993.
    • 1993
  • Investigation of oxygen-induced quenching of phosphorescence in photoexcited aromatic molecules by positron annihilation spectroscopy [microform] / Jag J. Singh, Abe Eftekhari.

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1996]
    • 1996
  • Microstructural characterization of semi-interpenetrating polymer networks by positron lifetime spectroscopy [microform] / Jag J. Singh, Abe Eftekhari.

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1996]
    • 1996
  • Microstructural characterization of semi-interpenetrating polymer networks by positron lifetime spectroscopy [microform] / Jag J. Singh, Ruth H. Peter, Abe Eftekhari.

    • Text
    • [Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; Springfield, Va. : National Technical Information Service, distributor, 1997]
    • 1997-1997
  • A study of physical properties of ODPA-p-PDA polyimide films [microform] / Jag J. Singh, Abe Eftekhari, and Terry L. St. Clair.

    • Text
    • Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center, [1990]
    • 1990
    • 1 Resource

    Available Online

    http://purl.access.gpo.gov/GPO/LPS68243

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