Results 31 to 40 of about 225,989 (345)

Improving the X-ray Shielding Performance of Tungsten Thin-Film Plates Manufactured Using the Rolling Technology

open access: yesApplied Sciences, 2021
X-ray shields used for medical purposes are manufactured using lead, which is inexpensive and easy to manufacture. However, as lead can be a major factor contributing toward environmental contamination, such as lead poisoning, a radiation-shielding plate
Seon-Chil Kim
doaj   +1 more source

Photodissociation and photoionisation of atoms and molecules of astrophysical interest [PDF]

open access: yes, 2017
A new collection of photodissociation and photoionisation cross sections for 102 atoms and molecules of astrochemical interest has been assembled, along with a brief review of the basic processes involved.
Bosman, A. D.   +2 more
core   +3 more sources

Radiation shielding for helical tomotherapy vault design

open access: yesJournal of Medical Physics, 2019
Purpose: The purpose of the present study is to carry out radiation shielding calculations to find out adequate thicknesses of protective barriers such as walls and ceiling based on minimum space required to house helical tomotherapy unit.
Amanjot Kaur, P N Pawaskar, G Sahani
doaj   +1 more source

Investigation of gamma-ray shielding effectiveness of natural marble used for external wall cladding of buildings in Riyadh, Saudi Arabia

open access: yesResults in Physics, 2017
Gamma-ray shielding effectiveness of different types of natural marble tiles commonly used for cladding the exterior walls of residential and non-residential buildings in Riyadh, Saudi Arabia has been investigated in the energy range 59.5–1332.5 keV.
Ibrahim F. Al-Hamarneh
doaj   +1 more source

Hazardous radiation protective glasses for medical and research laboratories

open access: yesHeliyon, 2023
In the current study, the bismuth oxide (Bi2O3) content was inter-substituted with gadolinium oxide (Gd2O3) in sodium borate glass. Glass sample density and molar volume values show a reverse trend. The optical transparent radiation shielding glasses are
R. Ruamnikhom   +6 more
doaj   +1 more source

Electronic shielding by closed shells in salts of thulium [PDF]

open access: yes, 1964
Electronic shielding by closed electron shells has been investigated in salts of trivalent thulium, by measuring the temperature dependence of the nuclear quadrupole splitting of the 8.42-keV gamma transition in Tm169.
Barnes, R. G.   +3 more
core   +1 more source

Characterizing and Testing a Fabric Containing Amorphous Glass-Coated Ferromagnetic Microwires for its Magnetic and Electric Shielding Properties in the Frequency Range (1-3) Ghz

open access: yesBuletinul Ştiinţific al Academiei Trupelor de Uscat, 2018
By applying a non-standardized methodology and by using electric- and magnetic-field probes of small dimensions (< 1cm), we experimentally characterized the electromagnetic shielding properties of a fabric containing ferromagnetic microwires weaved on a ...
Miclăuş Simona   +3 more
doaj   +1 more source

Investigation on the Effect of Technological Parameters on Emission Factor in 316L Stainless Steel Using Gas Metal Arc Welding [PDF]

open access: yesArchives of Metallurgy and Materials, 2021
Growing awareness for occupational safety in the welding environment needs a sustainable welding system. Welding gases releases toxic tiny particles and gases that inflict severe health consequences in the weld zone are unsolicited.
K.V. Satheesh Kumar   +5 more
doaj   +1 more source

A three‐dimensional physical model for calculating the corona onset voltage of a large‐diameter alternating‐current shielding ball under different ambient conditions

open access: yesIET Science, Measurement & Technology, 2022
For an alternating‐current (AC) shielding ball with a large radius of curvature, a three‐dimensional (3‐d) physical model for the corona onset voltage (COV) of the large‐diameter shielding ball under different ambient conditions was established according
Shilong Huang   +7 more
doaj   +1 more source

Power laws and self-similar behavior in negative ionization fronts

open access: yes, 2005
We study anode-directed ionization fronts in curved geometries. When the magnetic effects can be neglected, an electric shielding factor determines the behavior of the electric field and the charged particle densities.
Burgers J M   +8 more
core   +1 more source

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