Zobrazeno 1 - 9
of 9
pro vyhledávání: '"M. H. El Naby"'
Publikováno v:
International Journal of Environmental Health Research. 11:189-197
Fresh water algae were subjected to different concentrations (0.03, 0.07, 0.12, 0.25 and 0.5 g x l(-1)) of aqueous extract of reference fuel oil (EPA, USA, API Oil No. 2, 38% aromatic, 1274). Significant decrease in Chlorophyll. (a) was observed as t
Publikováno v:
Bulletin of environmental contamination and toxicology. 59(3)
Publikováno v:
AIP Conference Proceedings.
Publikováno v:
AIP Conference Proceedings.
Publikováno v:
Czechoslovak Journal of Physics. 39:998-1006
The formulas of the dependence of the spectral laser power distribution and its spectral half-width on the physical parameters of its laser active medium are derived. In addition it is found that, if the gain line profile has a Lorentzian or Gaussian
Publikováno v:
Czechoslovak Journal of Physics. 39:702-709
The effect of the presence of the axial modes within the spectral halfwidth of a laser spectral line on the visibility of its interference fringes is represented. It is found in case of axial modes with equal spectral halfwidths that the dominant fac
Autor:
H. Mayer, M. H. El Naby
Publikováno v:
Zeitschrift f�r Physik. 174:289-295
The results of new measurements of the optical constantsn andk of the alkali metalK, performed in ultrahigh vacuum on mirrorlike surfaces free of any contamination and distortion in the wavelength region from 0·365 μ to 2 μ at temperatures between
Autor:
H. Mayer, M. H. El Naby
Publikováno v:
Zeitschrift f�r Physik. 174:280-288
The results of new measurements of the optical constantsn andk of the alkali metal K, performed in ultrahigh vacuum on mirrorlike surfaces free of any contamination and distortion in the wavelength region from 0·365 μ to 2 μ at temperatures betwee
Autor:
M. A. Kenawy, H. T. El-Shair, M.M. El-Nahass, A. A. El-Shazly, M. M. H. El-Naby, A. M. Ebrahim
Publikováno v:
Applied Physics A Solids and Surfaces. 36:51-53
Ternary ZnSxSe1−x polycrystalline thin films were prepared by evaporation in vacuum of 10−5 Torr. The molecular fractionx varied in the region o≦x≦1. The optical constants (the refractive indexn, the absorption indexk, and the absorption coef