Results 31 to 40 of about 46,437 (146)

Model Test Study on Cylindrical Blasting Stress Wave Propagation across Jointed Rock Mass with Different Initial Stresses

Advances in Civil Engineering, 2020
In the drilling and blasting excavation of underground rock mass, the stress wave produced by the blasting holes usually propagates in the form of cylindrical wave, while the rock mass surrounding the underground engineering is initially subjected to the
Qian Dong, XinPing Li, JunHong Huang
doaj   +1 more source

Simulating the γ-ray and neutron attenuation properties of lithium borate glasses doped barite: efficient and deterministic analysis using relevant simulation codes

Journal of Materials Research and Technology, 2022
In the present paper, we report a comprehensive theoretical study dealing with γ -ray, fast and thermal neutrons shielding features of compositionally graded Pb-free lithium borate glasses doped barite: (B2O3)(0.6)(BaSO4)(x)(Li2O)(0.4-x).
Norah A.M. Alsaif, Najeh Rekik, Youssef Elmahroug, G. Lakshminarayana, Umer Farooq, Hira Affan, A. Wahab M.A. Hussein, Chedly Souga   +7 more
doaj   +1 more source

Preparation and characterization of bismuth-filled high-density polyethylene composites for gamma-ray shielding

Radiation Protection and Environment, 2019
An attempt has been made to prepare the nonlead-based gamma shielding materials by adding different weight percentages (0%, 10%, 20%, and 40%) of bismuth in high-density polyethylene (HDPE) matrix.
M Sheela, Vinayak Anand Kamat, K U Kiran, K M Eshwarappa   +3 more
doaj   +1 more source

Advances in the measurements of the mass attenuation coefficients

X-Ray Spectrometry, 2018
The knowledge of atomic fundamental parameters, such as mass attenuation coefficients or fluorescence yields with low uncertainties, is of decisive importance in elemental quantification involving X‐ray fluorescence analysis techniques. Several databases providing the mass attenuation coefficients are accessible and frequently used within a large ...
Ménesguen, Yves, Dulieu, Christophe, Lépy, Marie-Christine   +2 more
openaire   +2 more sources

Effective atomic numbers and electron density of dosimetric material

Journal of Medical Physics, 2009
A novel method for determination of mass attenuation coefficient of x-rays employing NaI (Tl) detector system and radioactive sources is described.in this paper.
Kaginelli S, Rajeshwari T, Sharanabasappa, Kerur B, Kumar Anil   +4 more
doaj  

Calculation the mass attenuation coefficient of beta-particles through Polyvinyl chloride

Iraqi Journal of Physics, 2010
The mass attenuation coefficient for beta particles through pure Polyvinyl chloride (PVC) and flax fibers- reinforced PVC composite were investigated as a function of the absorber thickness and the absorber to source distance.
Ban M. Alshabander
doaj  

Effective density and mass attenuation coefficient for building material in Brazil

Applied Radiation and Isotopes, 2006
This paper presents values for density and mass attenuation coefficient of building materials commonly used in Brazil. Transmission measurements were performed to provide input information for simulations with MCNP4B code. The structure for the clay bricks was simulated as a mix of all material layers and an effective density determined.
/Salinas, I. C. P., Conti, C. C., Lopes, R. T.   +2 more
openaire   +3 more sources

Nano tin oxide/dimethyl polysiloxane reinforced composite as a flexible radiation protecting material

Scientific Reports, 2023
Reinforced polymer composites are a recent type of advanced shielding material that has been studied experimentally and theoretically. This work described the protection properties of silicon rubber filled with nano and micro tin oxide (II).
Mona M. Gouda, Mahmoud I. Abbas, Sabbah I. Hammoury, Kareman Zard, Ahmed M.El-Khatib   +4 more
doaj   +1 more source

Mass Attenuation Coefficient Measurements of Photoelectric Absorption of Gamma-Rays in Copper Using Coincidence Technique

Tikrit Journal of Pure Science, 2020
The photoelectric absorption mass attenuation coefficients (m.a.c.) of  ɤ- rays in Cu are measured using a two 3"x3" NaI(Tl) detector coincidence spectrometer at 511, 1173 and 1332keV energy gates using Na-22 and Co-60 point sources. The m.a.c.
Mahmoud A. Elawi
doaj   +1 more source

Gamma attenuation, buildup factors, and radiation shielding performance of CaO-borosilicate glasses

Journal of Radiation Research and Applied Sciences
This paper investigates the gamma attenuation properties and radiation shielding performance of CaO-B2O3-SiO2 glasses. Through theoretical analysis, the mass attenuation coefficient (μ/ρ) and its corresponding mass energy-absorption coefficient (μen/ρ ...
Z.A. Alrowaili, E.O. Echeweozo, Sultan Alomairy, Alaa Hammoud, Chahkrit Sriwunkum, Norah Salem Alsaiari, Imed Boukhris, M.S. Al-Buriahi   +7 more
doaj   +1 more source