TY - GEN AU - Manal Talat Helmey Moselhey AU - Elsayed Awad Gaafar , AU - Fawzy Hamed Abd El kader , AU - Osiris Wanis Guirguis , TI - Biophysical studies on composite materials from poly (vinyl alcohol) - doped with cellulose derivatives / PY - 2004/// CY - Cairo : PB - Manal Talat Helmey Moselhey , KW - Biophysical KW - Vinyl Alcohol N1 - Thesis (M.Sc.) - Cairo University - Faculty Of Science - Department Of Biophysics; Issued also as CD N2 - The analyses of the optical absorption spectra confirm the results obtained from the electrical studies Analyses of the IR spectra for the samples yields some band intensity changes and position shifts of some important spectral bands which indicate the structural modifications induced by fast neutron irradiation In addition , the transmittance values and the induced changes in the color parameters may indicate that the variation induced coloration is both concentration and radiation dependent UR - http://172.23.153.220/th.pdf ER -