Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Mohamed G. El Feky"'
Autor:
Neveen S. Abed, Mohamed G. El Feky, Atef El-Taher, Ehab El Sayed Massoud, Mahmoud R. Khattab, Mohammed S. Alqahtani, El Sayed Yousef, Mohamed Y. Hanfi
Publikováno v:
Minerals, Vol 12, Iss 10, p 1245 (2022)
Egypt is mainly covered by ophiolitic rocks, muscovite, and two mica granites, in addition to different types of acidic and basic dikes. Our field observations indicated that El Sela granites were subjected to alteration types such as silicification,
Externí odkaz:
https://doaj.org/article/00d8cd46397746ff9c8e698641544174
Autor:
El-Afandy H. Adel, Mohamed G. El-Feky, Samia H. Taha, Salwa M. El Minyawi, Hanaa A. Sallam, Osama A. Ebyan, El-Sayed Yousef, Mohamed Y. Hanfi
Publikováno v:
Minerals, Vol 12, Iss 3, p 294 (2022)
The occurrence of heavy radioactive minerals in construction supplies such as granite has drawn attention to the extraction of heavy radioactive minerals. Granitic rocks were identified to serve an essential economic role in the study area’s surrou
Externí odkaz:
https://doaj.org/article/8d3aeb52e7f64ff39ab88df380cf88ee
Autor:
Ahmed Mohammed El-Shabasy, Mohamed G. El-Feky, Sayed M. Omar, Ahmed M. El Mezayen, Sherif A. Taalab, Eman M. Ibrahim
Publikováno v:
International Journal of Environmental Analytical Chemistry. 102:970-986
Nine samples were chemically characterized and radiometrically analyzed for determination of 234U, 238U, 235U, 230Th, 232Th, 226Ra and 40K by γ-ray spectrometer Hyper Purity Germanium (HPGe detecto...
Autor:
El-Afandy H. Adel, Samia H. Taha, Osama A. Ebyan, Wafaa M. Rashed, Mohamed G. El-Feky, Mohammed S. Alqahtani, Korany A. Korany, Mohamed Y. Hanfi
Publikováno v:
Toxics; Volume 10; Issue 10; Pages: 596
Sixty-seven sites of Hafafit pegmatite from the Southeastern Desert of Egypt were investigated radiometrically in the field using an in situ γ-ray spectrometer to determine eU, eTh, and K contents. The obtained results ranged from 0.4 to 6 ppm for e
Autor:
El-Afandy A. H, Mohamed G. El-Feky, Samia H. Taha, S. M. El Minyawi, H. A. Sallam, A. F. Tawfic, A. Omar, M. G. El-Samrah
Publikováno v:
Journal of Physics: Conference Series. 2305:012033
Granites from the Southeastern Desert of Egypt were investigated by using in situ γ-ray spectrometer. Consequently, estimating the radiological effects from these rocks were achieved through calculation of some radiological parameters; Annual effect
Publikováno v:
Nuclear Sciences Scientific Journal. 7:87-100
Autor:
Mona S. Talaat, Maisa M. Amin, Nilly A. Kawady, Ibrahim E. Elaassy, Mohamed G. El-Feky, Abdelsattar M. Sallam
Publikováno v:
Separation Science and Technology. 53:2232-2237
Bioleaching, in the scope of biotechnology, is one of the promising technologies, which can be utilized for extracting valuable radioactive metal (uranium) from other radioactive ones. Also, it con...
Autor:
Jukka Lehto, Ibrahim E. El Assay, Hanna Tuovinen, Mahmoud R Khattab, Mohamed G. El Feky, Mohamed A. Abd.El-Rahman
Publikováno v:
Instrumentation Science & Technology. 45:338-348
Three methods were employed for the determination of uranium in granitic ore rock samples. Gamma spectrometry is a non-destructive technique while alpha spectrometry and inductively coupled plasma–mass spectrometry (ICP-MS) are destructive methods
Autor:
Nagdia M. Ibrahim, Ibrahim E. Elaassy, Farag A. Issa, Mahmoud R. Khattab, Osman A. Desouky, Mohamed G. El-Feky
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 303:357-362
The present work is an attempt to study the uranium concentration and deviation in activity ratio 234U/238U from secular equilibrium conditions for determination the geochemical variation due to water–rock interaction. The studied wells are located
Autor:
Mohamed G. El-Feky, Abdelsattar M. Sallam, Maisa M. Amin, Nilly A. Kawady, Ibrahim E. Elaassy, Mona S. Talaat
Publikováno v:
Journal of Environmental Radioactivity. 134:76-82
Bioleaching, like Biotechnology uses microorganisms to extract metals from their ore materials, whereas microbial activity has an appreciable effect on the dissolution of toxic metals and radionuclides. Bioleaching of uranium was carried out with iso