A Novel Hierarchical Extreme Machine-Learning-Based Approach for Linear Attenuation Coefficient Forecasting [PDF]
Entropy, 2023 The development of reinforced polymer composite materials has had a significant influence on the challenging problem of shielding against high-energy photons, particularly X-rays and γ-rays in industrial and healthcare facilities.
Giuseppe Varone +9 more
doaj +5 more sources
An Analytical-empirical Calculation of Linear Attenuation Coefficient of Megavoltage Photon Beams [PDF]
Journal of Biomedical Physics and Engineering, 2017 Background: In this study, a method for linear attenuation coefficient calculation was introduced. Methods: Linear attenuation coefficient was calculated with a new method that base on the physics of interaction of photon with matter, mathematical ...
Seif F. +2 more
doaj +3 more sources
Statistical characterization of the linear attenuation coefficient in polychromatic CT scans. [PDF]
Med Phys, 2020 PurposeTo provide a unifying statistical model that characterizes the integrated x‐ray intensity at the detector after logarithmic transformation and can be extended to the characterization of computed tomography (CT) numbers in the reconstructed image.MethodsWe study the statistical characteristics of polyenergetic x‐ray beams in the detector. Firstly,
Vegas G, San José Estépar R.
europepmc +4 more sources
Linear attenuation coefficient measurement in polymer composite
Iraqi Journal of Physics, 2019 Linear attenuation coefficient of polymer composite for beta particles and bremsstrahlung ray were investigated as a function of the absorber thickness and energy.
Nesreen B. Al-Rawi
doaj +3 more sources
Fat Content Quantification with US Attenuation Coefficient: Phantom Correlation with MRI Proton Density Fat Fraction [PDF]
DiagnosticsObjective: The aim of this study was to evaluate the consistency and reproducibility of attenuation coefficient (AC) measurements using different commercial ultrasound (US) across via a phantom experiment to investigate the relationship between the AC ...
Rongying Chen +9 more
doaj +2 more sources
Development and evaluation of PU@PbO/B4C composite for gamma and neutron radiation shielding [PDF]
Scientific ReportsIn the current study, we investigate the performance of polyurethane foam loaded with an equal combination of boron carbide (B4C) and lead oxide (PbO) to develop a dual functional polymer composite for radiation shielding applications.
Mahdieh Mokhtari Dorostkar +1 more
doaj +2 more sources
Investigation of gamma radiation shielding features for modified structural materials for nuclear energy and nuclear medicine [PDF]
Nuclear Technology and Radiation Protection, 2023 In this paper, shielding characteristics of three concrete samples with different B4C,Fe3O4,and BaSO4 contents were examined by determining their theoretical and experimental mass attenuation coefficients at photon energies of 15 MeV.
Zaripova Yuliya +4 more
doaj +1 more source
Investigation of Gamma Ray Buildup Factor for some Shielding Absorber
Cumhuriyet Science Journal, 2022 The purpose of this research is to observe and understand the processes by which gamma rays are attenuated in passing through absorber, and the effects of shielding geometry.
Hiwa Mohammad Qadr
doaj +1 more source
Nuclear Engineering and Technology, 2023 In the present study, six silicone rubber doped by tellurium borate oxides were fabricated using the casting method. The densities of the fabricated silicon rubber-doped by tellurium borate oxides samples were measured using the Archimedes Method ...
M. Elsafi +4 more
doaj +1 more source
Gamma Radiation Shielding Properties of Slag and Fly Ash-based Geopolymers
Atom Indonesia, 2021 Industrial waste-based geopolymer cement is a greener alternative to Ordinary Portland Cement (OPC) for radiation shielding with comparable mechanical properties without the production of CO2 during synthesis.
M. W. Hasan +2 more
doaj +1 more source