53 Result(s)
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Hesham M. H. Zakaly
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Article
Open AccessNatural radiological risk assessment around archaeological sites, El-Dakhla Oasis (EDO), Egypt
The natural radionuclides in ancient El-Qasr village located in the El-Dakhla oasis (EDO), Egypt's Western Desert were measured using gamma-ray spectrometry equipped with a NaI (Tl) detector. The findings indi...
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Article
Influence of substrate temperatures on the microstructural, morphological, and optoelectronic characteristics of Cu3N/ITO thin films intended for solar cell applications
Solar cells are crucial for renewable energy, with indium tin oxide (ITO) commonly used as a window layer. Copper nitride (Cu3N) is a promising material, yet research on both materials together is scarce. This st...
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Article
Customization of silver(I) oxide incorporation ratio to enhance radiation attenuation properties in chalcogenide oxide reinforced glass-ceramics
In this study, we explored the gamma-ray shielding properties of As2O3 glass ceramics, which were doped with varying concentrations of Ag2O within chalcogenide oxides (SeO2 and TeO2). Utilizing the Monte Carlo N-...
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Article
Ni-doped and co-doped borate glasses for energy storage and UV-blocking applications
In this work, the calcium-lead arseborate glass’s basic components were doped with an equal amounts of NiCl2 and CoCl2, separately, to obtain two different glass samples that were dubbed the Ni-doped sample and t...
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Monte Carlo dosimetry of Y-90 and Ru-106 /Rh-106 disk sources for ocular melanoma treatment: beta dose falloff study
Eye plaque brachytherapy, utilizing Y-90 and Ru-106/Rh-106 radionuclides disk sources recently developed for episcleral brachytherapy, proves to be an effective approach for treating eye malignant melanoma. In...
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Gamma-ray shielding evaluation of highly-dense PBSCCx-glasses: experimental and simulation study
In this study, comprehensive experimental measurements have been achieved to assess the gamma shielding properties of the five unique compositions and highly dense PBSCCx-glass (4.13–4.51 g/cm3) at selected gamma...
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Article
Perovskite ceramics: the impact of lanthanum do** on the structural, radiation shielding and vibrational characteristics of lead titanate
This paper thoroughly examines lanthanum-doped lead titanate (PbLaxTi(1−0.75x)O3), a perovskite-based ceramic material, focusing on its structural properties, vibrational behavior, and radiation shielding capabil...
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Open AccessCorrection to: Naturally occurring radioactive materials (NORM) concentration and health risk assessment of aerosols dust in Nicosia, North Cyprus
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Article
Radioactive and mineralogical assessment of mediterranean black sands: a systematic analysis and health risk evaluation
This study investigates the naturally occurring radionuclides in Egyptian black sands collected from the Mediterranean Sea Coast, an area rich in sediments from the White Nile, Blue Nile, and Atbara rivers. Th...
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Exploring the impact of sulfur-antimony incorporation on the radiation shielding, structural, physical, and electrical properties of (S3Sb2)x(S2Ge)100−x chalcogenide composites
Chalcogenide composites, a category of non-oxide glasses, have shown great potential in various applications such as optoelectronics, thermal imaging, memory-switching devices, lasers, and more. Owing to the d...
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Open AccessNaturally occurring radioactive materials (NORM) concentration and health risk assessment of aerosols dust in Nicosia, North Cyprus
This study was carried out to evaluate the distribution of naturally occurring radioactive materials (NORM) and radiological risk indexes in aerosol dust in Nicosia, Cyprus utilizing a high-resolution HPGe gam...
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Article
Nd2O3- doped borate/phosphate glasses for optical and radiation shielding applications: fabrication, physical, optical as well as gamma-ray attenuation capacity
Four glass systems of Nd2O3- doped borate/phosphate glasses with nominal compositions of (58-x)B2O3 + 25P2O5 + 7BaO + 10Li2O + xNd2O3:(0 (BPBLN0) ≤ x ≤ 3 (BPBLN3)) molar percentage were obtained by ordinary melt-...
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Article
Influence of [Na2O]/[CuO] on the physical and photon attenuation capacities of cupric sodium phosphate glasses: A comparative study
The role of the [Na2O]/[CuO] ratio in two glass groups with a chemical formula of (50 − y/2)Na2O–yCuO–(50 − y/2) P2O5 (y = 0.0–40 mol%) coded as Line I and (50 − y)Na2O–yCuO–50P2O5 (y = 0.0–50 mol%) coded as Line...
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Correction: Nitrogen plasma synthesis of flexible supercapacitors based on reduced graphene oxide/aloe vera/carbon nanotubes nanocomposite
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Article
The effect of face masks on the filtration rate of Radon (222Rn) gas and its progeny in breathing air
The blocking effect of 222Rn gas and its progeny by various face masks has been determined using a measurement system with a parallel AlphaGUARD detector. The theoretical approach of diffusion rate for different ...
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Article
Sodium metaphosphate-tungsten trioxide glasses: a characterization study on gamma-ray shielding properties and transmission factors (TFs)
In the present study, gamma-ray attenuation properties as well as transmission factor values of high-density sodium metaphosphate-tungsten trioxide glasses with chemical composition of (40−x)NaPO3−xWO3-60Sb2O3: (
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A comprehensive study on optical, physical, mechanical and radiation shielding properties of calcium bismuth borophosphate glass–ceramics with distinct V2O5 contents
Role of V2O5 as a strong network glass modifier on the optical, elastic, physical, and radiation protection performance of V2O5-based glasses in form 10CaF2-(20-x)Bi2O3-60P2O5-10B2O3:xV2O5, x = 0.0, 0.5, 1.0, 1.2...
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U-238, Th-232 series, and Pu-239 + Pu-240 concentration analysis in biological samples of high natural background radiation residents by alpha spectrometry
The purpose of this research was to determine the isotope concentration of the actinide radioelements 238U, 232Th series, and 239Pu in biological samples (urine) using the alpha spectroscopy system. The samples w...
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Nitrogen plasma synthesis of flexible supercapacitors based on reduced graphene oxide/aloe vera/carbon nanotubes nanocomposite
Flexible supercapacitors (FS) are ideal as power backups for upcoming stretchable electronics due to their high power density and good mechanical compliance. However, lacking technology for FS mass manufacturi...
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The seasonal variation of ambient gamma radiation dose rate and health risk assessment in North Coast, Mediterranean Sea
In this research, the seasonal variations of ambient gamma radiation dose rate and the outdoor gamma radiation risk in the northeast location of Cyprus were investigated by means of an Ion Chamber Survey Meter...
