Results 131 to 140 of about 1,153 (166)

A pyridinium cation engineering strategy to achieve high-performance X-ray scintillation of antimony halides. [PDF]

Chem Sci
Zhao YY, Chen JC, Zhang L, Chen J, Liao Q, Li ZQ, Lin M, Yao J, Zhong YW.   +8 more
europepmc   +1 more source

Mediolateral Margin of Stability highlights motor strategies for maintaining dynamic balance in older adults. [PDF]

PLoS One
Siragy T, Russo Y, Horsak B.
europepmc   +1 more source

Gamma-Ray Attenuation Performance of PEEK Reinforced with Natural Pumice and Palygorskite. [PDF]

Polymers (Basel)
Alharbi A.
europepmc   +1 more source

Simulation of Gamma-Ray Attenuation in Zeolite-Polymer Composites for Low-Cost Sustainable Radiation Shielding. [PDF]

Polymers (Basel)
Alharbi A, Alnagran H, Alashrah S.
europepmc   +1 more source

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X-ray absorption in matter. Reengineering XCOM

Radiation Physics and Chemistry, 2001
Abstract A Windows version of XCOM, the well-known program for calculating X-ray and gamma-ray attenuation coefficients and interaction cross sections, has been developed. The new program, called WinXCom, has an improved user interface.
L. Gerward, N. Guilbert, K. Bjørn Jensen, H. Levring   +3 more
exaly   +2 more sources

XCOM intrinsic dimensionality for low-Z elements at diagnostic energies

Medical Physics, 2012
To determine the intrinsic dimensionality of linear attenuation coefficients (LACs) from XCOM for elements with low atomic number (Z = 1-20) at diagnostic x-ray energies (25-120 keV). H(0) (q), the hypothesis that the space of LACs is spanned by q bases, is tested for various q-values.Principal component analysis is first applied and the LACs are ...
Hans Bornefalk
exaly   +4 more sources

A novel active balance assistive control strategy based on virtual stiffness model of XCoM

Assembly Automation, 2019
PurposeThis paper aims to propose a novel balance-assistive control strategy for hip exoskeleton robot.Design/methodology/approachA hierarchical balance assistive controller based on the virtual stiffness model of extrapolated center of mass (XCoM) is proposed and tested by exoskeleton balance assistive control experiments.FindingsExperiment results ...
Shiyin Qiu, Fusheng Zha, Jing Deng
exaly   +2 more sources

Photon attenuation coefficients of oxide dispersion strengthened steels by Geant4, XCOM and experimental data

Radiation Physics and Chemistry, 2019
Abstract The total mass attenuation coefficients (μ/ρ) of oxide dispersion strengthened (ODS) steels have been investigated by using Geant4 simulation toolkit at energies ranging from 0.01 MeV to 100 GeV. Moreover, Geant4 is applied to further study on the partial mass attenuation coefficient of three main interactions including photoelectric effect,
Jingtai Li, Mei Huang, Rongbin Hou
exaly   +2 more sources

Photon attenuation coefficients of thermoluminescent dosimetric materials by Geant4 toolkit, XCOM program and experimental data: A comparison study

Annals of Nuclear Energy, 2014
The mass attenuation coefficients, mu/rho of some thermoluminescent dosimetric materials with potential applications as personnel dosimeters, have been investigated using Geant4 simulation toolkit. Appreciable variations are noted for the mu/rho values by changing the photon energy and chemical compositions.
Vishwanath P Singh, M E Medhat
exaly   +2 more sources

Shielding properties of Cu-Sn-Pb alloy by Geant4, XCOM and experimental data

Materials Today Communications, 2021
Abstract In this paper, alloy samples consisting of (Pb, Sn, Cu) were prepared in different proportions. The shielding properties of the prepared samples including mass attenuation coefficient (μm), radiation protection efficiency (RPE), half-value layers (HVL), mean free path (MFP), atomic and electronic electron cross-sections (σa and σe ...
Ali H. Taqi, Abdulahdi M. Ghalib, Hilala N. Mohammed   +2 more
openaire   +1 more source