Results 21 to 30 of about 310,530 (266)

Cadmium oxide reinforced 46V2O5–46P2O5–(8−x)B2O3–xCdO semiconducting oxide glasses and resistance behaviors against ionizing gamma rays

Journal of Materials Research and Technology, 2021
This study aimed to determine the contribution of B2O3/CdO substitution on gamma-ray attenuation behaviors of 46V2O5–46P2O5–(8−x)B2O3–xCdO (x = 0–8 mol%) glass system.
H.O. Tekin, Shams A.M. Issa, G. Kilic, Hesham M.H. Zakaly, A. Badawi, G. Bilal, H.A.A. Sidek, K.A. Matori, M.H.M. Zaid   +8 more
doaj   +1 more source

Fast neutrons and gamma rays shielding properties for some nylon composite [PDF]

E3S Web of Conferences
In this study, The removal parameters of macroscopic fast neutron cross-section, linear gamma ray attenuation, mean free path, and half-value layer (half-value thickness) were calculated for a polymer composite containing nylon 6 as a base material and ...
Kareem Dawood Salwah, Ghali Ishnayyin Hadeel, Fadhil Mkhaiber Ahmed, Hatim Naseef Hadia   +3 more
doaj   +1 more source

Impact of WO3 and BaO nanoparticles on the radiation shielding characteristics of polydimethylsiloxane composites

e-Polymers, 2023
In this study, we developed flexible composites using silicone rubber (SR) or polydimethylsiloxane as the matrix and WO3 and BaO nanoparticles as filler to analyze their radiation-shielding performance. The linear attenuation coefficient (LAC) values for
Alorain Dalal A., Almuqrin Aljawhara H., Sayyed M. I., Elsafi Mohamed   +3 more
doaj   +1 more source

Development of high-temperature heavy density dolerite concrete for 4th generation nuclear power plants

Frontiers in Materials, 2023
This study examines the physical, mechanical, microstructural, and attenuation properties of high-density concrete exposed to temperatures ranging from 200°C to 1200°C.
Muhammad Nasir Ayaz Khan, Azhar Hussain Malik, Muhammad Yaqub, Muhammad Umar, Muhammad Noman, Muhammad Abid, Hisham Alabduljabbar, Abdullah Mohamed, Syed Salman Ahmad Zaidi   +8 more
doaj   +1 more source

Methodology study for determining the half-value layer using the Monte Carlo code PHITS

Brazilian Journal of Radiation Sciences
For most purposes, the quality of a beam can be specified in terms of the half-value layer (HVL), which is the thickness of material required to reduce the air kerma  to half, at one meter from the source, from a unidirectional beam of infinitesimal ...
Ronald Soares, Marco Aurélio Lacerda
doaj   +1 more source

Correction of the Contribution of Scattered Photon Radiation to the Ionization Chamber Readings During X-Ray Radiation Quality Assessment

Приборы и методы измерений, 2022
Reduction of the systematic error when determining the characteristics of the reference X-ray radiation fields is an essential task according to the ISO 4037-1:2019 standard.
A. A. Zaharadniuk, K. G. Senkovsky, R. V. Lukashevich   +2 more
doaj   +1 more source

Gamma Ray and FTIR Studies in Zinc Doped Lead Borate Glasses for Radiation Shielding Application [PDF]

Materials Research, 2018
Gamma ray shielding properties of borate glass samples containing oxides of lead and zinc are prepared by melt and quench technique and evaluated theoretically using XCOM computer software for gamma ray shielding properties.
Zakiyyu Ibrahim Takai, Rajinder Singh Kaundal, Mohd Kamarulzaki Mustafa, Saliza Asman, Aisha Idris, Yusuf Shehu, Jibrin Mohammad, Miftahu Gambo Idris, Mansur Said   +8 more
doaj   +1 more source

Performance characteristics of mobile MOSFET dosimeter for kilovoltage X-rays used in image guided radiotherapy

Journal of Medical Physics, 2015
The main objective of this study was to investigate the characteristics of metal oxide semiconductor field effect transistor (MOSFET) dosimeter for kilovoltage (kV) X-ray beams in order to perform the in vivo dosimetry during image guidance in ...
A Sathish Kumar, I Rabi Raja Singh, S D Sharma, B Paul Ravindran   +3 more
doaj   +1 more source

Mailed thermoluminescent dosimeter determination of entrance skin exposure and half-value layer in mammography [PDF]

American Journal of Roentgenology, 1978
A method of providing in vivo measurement of entrance skin exposure for mammography using mailed thermoluminescent dosimeters has been developed. The dosimeters are calibrated to 137Cs (662 keV), and a correction is applied to account for energy response.
J F, Wochos, G D, Fullerton, L A, DeWerd
openaire   +2 more sources

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source