Results 21 to 30 of about 322,584 (266)

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

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

Effect of Waste Iron Filings (IF) on Radiation Shielding Feature of Polyepoxide Composites

Crystals, 2023
In the present work, photon and neutron attenuation properties of polyepoxide composites produced by doping waste iron filings (IF) at different percentages (0%, 20%, 40%, and 60% iron filing percentage) were obtained using theoretical and experimental ...
Mohammed T. Alresheedi, Mohamed Elsafi
doaj   +1 more source

EVALUATION OF BRACHYTHERAPY FACILITY SHIELDING STATUS IN KOREA OBTAINED FROM RADIATION SAFETY REPORTS

Nuclear Engineering and Technology, 2013
Thirty-eight radiation safety reports for brachytherapy equipment were evaluated to determine the current status of brachytherapy units in Korea and to assess how radiation oncology departments in Korea complete radiation safety reports.
MI HYUN KEUM, SUNG HO PARK, SEUNG DO AHN, WOON-KAP CHO   +3 more
doaj   +1 more source

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

Determining Parental Factors for Clinical Trial Attrition in Pediatric Acute Lymphoblastic Leukemia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background/Objectives Despite high enrollment rates on Children's Oncology Group (COG) protocols, attrition after initial consent is challenging, introducing bias and prolonging trial completion. While adult oncology literature has identified predictors of withdrawal, little is known about caregiver decision‐making for child participation in ...
Kimberly L. Stathas, Jakob Q. Weiss, Kellee N. Parker, Cathy Lee‐Miller   +3 more
wiley   +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

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

The effect of replacing sand by iron slag on physical, mechanical and radiological properties of cement mortar

HBRC Journal, 2017
In the present study, the effects of replacing sand by high percentages of basic-oxygen furnace slag on the compressive strength, bulk density and gamma ray radiation shielding properties of mortar have been investigated.
Ahmed S. Ouda, Hamdy A. Abdel-Gawwad
doaj   +1 more source