Results 21 to 30 of about 2,023 (158)

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

open access: yesRadiation 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   +3 more
doaj   +1 more source

Characterization of the Radiation Contamination in an 18MV Linac Treatment Room Made of some Nanoparticles Mixture

open access: yesFrontiers in Biomedical Technologies, 2023
Propose: shielding medical radiation requires deep knowledge of radiation physics and shielding design methods. Materials and Methods: Effective neutron mass removal cross-section (ΣR/ρ) was derived for the ordinary concrete doped with 50nm of TiO2 (5%),
Sara Ghanavati   +3 more
doaj   +1 more source

Comparing 511 keV Attenuation Maps Obtained from Different Energy Mapping Methods for CT Based Attenuation Correction of PET Data [PDF]

open access: yesIranian Journal of Medical Physics, 2008
Introduction:  The  advent  of  dual-modality  PET/CT  scanners  has  revolutionized  clinical  oncology  by  improving lesion localization and facilitating treatment planning for radiotherapy.
Maryam Shirmohammad   +3 more
doaj   +1 more source

A Novel Hierarchical Extreme Machine-Learning-Based Approach for Linear Attenuation Coefficient Forecasting

open access: yesEntropy, 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   +1 more source

A Pulsar Vector Observation-Based Link Acquisition Method for X-Ray Communications

open access: yesInternational Journal of Aerospace Engineering, 2023
X-ray communication (XCOM) is an emerging laser communication technique for deep space applications. Traditional link acquisition of laser communications depends significantly on Earth support and shows little autonomy.
Shibin Song, Xiao Lu, Haixia Wang
doaj   +1 more source

Development of the Relationships Among Dynamic Balance Control, Inter-limb Coordination, and Torso Coordination During Gait in Children Aged 3–10 Years

open access: yesFrontiers in Human Neuroscience, 2021
Knowledge about the developmental process of dynamic balance control comprised of upper arms and upper legs coordination and trunk and pelvis twist coordination is important to advance effective balance assessment for abnormal development.
Hiroki Mani   +5 more
doaj   +1 more source

Implementation of waste silicate glass into composition of ordinary cement for radiation shielding applications

open access: yesNuclear Engineering and Technology, 2022
The aim of this work is to study the radiation shielding properties of cement samples with waste glass incortated into its composition. The mass attenuation coefficient (MAC) of the samples were experimentally determined to evaluate their radiation ...
Mohanad S. Eid   +6 more
doaj   +1 more source

Enhanced radiation shielding with galena concrete [PDF]

open access: yesNuclear Technology and Radiation Protection, 2015
A new concrete, containing galena mineral, with enhanced shielding properties for gamma sources is developed. To achieve optimized shielding properties, ten types of galena concrete containing different mixing ratios and a reference normal ...
Hadad Kamal   +2 more
doaj   +1 more source

Calculation of attenuation parameter for Ir-192 gamma source in shielding materials

open access: yesJournal of Medical Physics, 2022
Purpose: Calculation of photon attenuation is necessary for the selection of shielding materials for an irradiation facility. Methods and Materials: In this work, a Monte Carlo simulation was utilized to assess the effectiveness of clay-polyethylene ...
Adila Hanim Aminordin Sabri   +3 more
doaj   +1 more source

Evaluation of the shielding parameters of alkaline earth based phosphate glasses using MCNPX code

open access: yesResults in Physics, 2019
Glass systems of composition 16XO–3Al2O3–6CuO–20Na2O–55P2O5 (where X = Sr, Ca, Mg and Ba mol%) have been investigated to check its potential utilize as gamma ray shielding material. Different shielding quantities namely mass attenuation coefficient (µ/ρ),
O. Agar   +7 more
doaj   +1 more source

Home - About - Disclaimer - Privacy