Search

Your search keyword '"Mostafa, A.M.A."' showing total 26 results
Start Over Author "Mostafa, A.M.A."
26 results on '"Mostafa, A.M.A."'

25. Toxicity of certain dyes as insecticides and their joint action with some pyrethroids.

Author

Ahmed, Y.M., Mostafa, A.M.A., and Elewa, M.A.

Abstract

This study was conducted to investigate toxicity of certain dyes against (Spodoptera littoralis) the cotton leafworm and to throw more light on the use of some dye combinations with some synthetic pyrethroids and their joint action. Results obtained showed that deltamethrin was the most effective against (S. littoralis) 4th instar larvae followed by floucythranate and cypermethrin, while in the tested dyes, aniline blue and methylene blue showed higher toxic index than xanthin followed by eosin and fuchsin. The joint action studies demonstrated strong synergism in mixture of deltamethrin with fuchsin, methylene blue, or in the mixture of floucythranate with xanthin or eosin. The other combinations indicated only additive joint action. [ABSTRACT FROM PUBLISHER]

Published
1985
Full Text
View/download PDF

26. Influence of combining Al2O3, La2O3, Gd2O3, and Dy2O3with barium borosilicate Glass-ceramics: A case study of gamma radiation interaction parameters

Author

Mostafa, A.M.A., Elbashir, B.O., Issa, Shams A.M., Uosif, M.A.M., Ene, Antoaneta, Algethami, Merfat, Bawazeer, Omemh, El Agammy, E.F., and Zakaly, Hesham M.H.

Abstract

The goal of this investigation is to test the barium boro-silicate glass-ceramics with different additives against gamma radiation using the FLUKA Monte Carlo code. On four different glass-ceramics samples, the effect of an equal quantity of Al2O3, La2O3, Gd2O3, and Dy2O3with barium borosilicate glass-ceramics on the radiation shielding capabilities of the glass-ceramics was investigated. In the examined glass ceramics, densities were obtained to investigate glass samples. The densities obtained were 3.92, 4.432, 4.52, and 4.88 g/cm3, respectively. BBSDy sample has the highest density which indicates that it is more effective for radiation shielding. The shielding parameters have been calculated at 0.356, 0.662, 1.173, and 1.333 MeV. The obtained results have been compared with the NistXCOM web page and Phy-X/PSD platform. The results showed a good agreement between FLUKA code, NistXCOM, and Phy-X/PSD. The calculated shielding parameters increase with additive (Al2O3, La2O3, Gd2O3, and Dy2O3). Moreover, the 50BaO-15SiO2-30B2O3-5Al2O3-5Dy2O3specimen has the best radiation shielding features among the other glass-ceramics. In conclusion, the BBSDY sample containing 5 moles per cent 5 mol% Dy-III-Oxide would be the most effective in terms of radiation shielding, based on the results obtained in this study. When Dy-III Oxide concentrations were increased, linear and mass attenuation coefficient values were significantly increased, which contributed directly to the development of radiation shielding characteristics in the glass-ceramic.

Published
2022
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results