Findings from Al-Azhar University in Health Maintenance Organizations Reported (Effect of cement kiln dust and gamma irradiation on the ultrasonic…

Managed Care Weekly Digest

Findings from Al-Azhar University in Health Maintenance Organizations Reported (Effect of cement kiln dust and gamma irradiation on the ultrasonic parameters of HMO borate glasses)

By a News Reporter-Staff News Editor at Managed Care Weekly Digest -- Fresh data on Health Maintenance Organizations are presented in a new report. According to news originating from Assiut, Egypt, by NewsRx correspondents, research stated, "Glass samples with the chemical formula x CKD-(100 - x) (5Na(2)O-65 B2O3-9 Bi2O3-21PbO), (0 <= x<= 32 mol%) were prepared. The density and the ultrasonic estimations of the investigated glasses were analyzed at room temperature before and after the impact of two dosages of gamma irradiation to study the effect of both CKD and gamma radiation."

Our news journalists obtained a quote from the research from Al-Azhar University, "It was found that the density, and the ultrasonic parameters are sensitive to the variety of the content of CKD and the effect of gamma-radiation. Replacement of oxides with higher atomic weights such as Bi2O3 and PbO by CKD decreases the density. Analysis of the behavior of the ultrasonic parameters demonstrates that creation of CaO6 and SiO4 on one hand and an alternate transformation between BO4 and BO3 structural units, on the other hand, affect the increase of the ultrasonic velocities and the elastic moduli. Moreover, the density and the ultrasonic parameters decrease somewhat with the increase of the doses of gamma-irradiation."

According to the news editors, the research concluded: "The variations of the previous physical parameters can be referred to the creation of radiation imperfections, which occupied the voids inside the glass structure."

For more information on this research see: Effect of cement kiln dust and gamma irradiation on the ultrasonic parameters of HMO borate glasses. Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms, 2017;394():44-49. Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands (see also Health Maintenance Organizations).

The news correspondents report that additional information may be obtained from Y.B. Saddeek, Al Azhar Univ, Dept. of Phys, Fac Sci, Assiut 71524, Egypt. Additional authors for this research include Y.B. Saddeek, G.Y. Mohamed, A.M.A. Mostafa and H.S. Hassan.