Results 61 to 70 of about 686 (148)

NAIRAS Version 3 Atmospheric Ionizing Radiation Validation: Comparisons to RaD‐X Measurements

open access: yesSpace Weather, Volume 23, Issue 4, April 2025.
Abstract The Nowcast of Aerospace Ionizing RAdiation System (NAIRAS) model predicts dosimetric and radiative flux quantities for assessing human radiation exposure levels and radiation effects on flight electronic systems from the surface of the Earth to deep space. NAIRAS version 3 includes many updates and improvements to the model.
Christopher J. Mertens   +2 more
wiley   +1 more source

Investigating LETd optimization strategies in carbon ion radiotherapy for pancreatic cancer: a dosimetric study using an anthropomorphic phantom

open access: yesMedical Physics, Volume 52, Issue 3, Page 1746-1757, March 2025.
Abstract Background Clinical carbon ion beams offer the potential to overcome hypoxia‐induced radioresistance in pancreatic tumors, due to their high dose‐averaged Linear Energy Transfer (LETd), as previous studies have linked a minimum LETd within the tumor to improved local control. Current clinical practices at the Heidelberg Ion‐Beam Therapy Center
Filipa Baltazar   +7 more
wiley   +1 more source

‘Dirty dose’‐based proton variable RBE models ‐ performance assessment on in vitro data

open access: yesMedical Physics, Volume 52, Issue 2, Page 1311-1322, February 2025.
Abstract Background In clinical proton radiotherapy, a constant relative biological effectiveness (RBE) of 1.1 is typically applied. Due to abundant evidence of variable RBE effects from in vitro data, multiple variable RBE models have been suggested, typically by describing the α$\alpha$ and β$\beta$ parameters in the linear quadratic (LQ) model as a ...
Fredrik Kalholm   +2 more
wiley   +1 more source

Mini-TEPC Microdosimetric Study of Carbon Ion Therapeutic Beams at CNAO

open access: yesEPJ Web of Conferences, 2017
Mono-energetic carbon ion scanning beams of 195.2 MeV/u at the Italian National Centre for Oncological Hadrontherapy (CNAO) have been used to study the microdosimetric features of an “active” carbon ion beam used in hadrontherapy.
Conte V.   +5 more
doaj   +1 more source

Interpreting depositional environments from modern floodplain sediments using optically stimulated luminescence

open access: yesBoreas, Volume 54, Issue 1, Page 14-33, January 2025.
We found that within a small area of a modern floodplain there are distinct variations in bleaching characteristics across different depositional environments. Our results contribute to the growing body of work linking luminescence signals with geomorphic processes and sediment transport.
Abigail L. Langston   +4 more
wiley   +1 more source

Modeling of xenobiotic transport and metabolism in virtual hepatic lobule models.

open access: yesPLoS ONE, 2018
Computational models of normal liver function and xenobiotic induced liver damage are increasingly being used to interpret in vitro and in vivo data and as an approach to the de novo prediction of the liver's response to xenobiotics.
Xiao Fu   +6 more
doaj   +1 more source

Editorial: Challenges for Radiation Transport Modelling: Monte Carlo and Beyond

open access: yesFrontiers in Physics, 2022
M. A. Cortés-Giraldo   +3 more
doaj   +1 more source

Moving from organ dose to microdosimetry: contribution of the Monte Carlo simulations

open access: yesBrazilian Archives of Biology and Technology, 2005
When living cells are irradiated by charged particles, a wide variety of interactions occurs that leads to a deep modification of the biological material.
Christophe Champion
doaj   +1 more source

Reproducing the NIRS-QST Clinical Dose Calculations for Carbon Ion Radiotherapy Using Microdosimetric Probability Density Distributions

open access: yesRadiation
Ion radiotherapy requires accurate relative biological effectiveness (RBE) calculations to account for the markedly different biological effects of ions compared to photons.
Alessio Parisi   +3 more
doaj   +1 more source

A novel avalanche-confinement TEPC for microdosimetry at nanometric level

open access: yesEPJ Web of Conferences, 2017
The tissue equivalent proportional counter (TEPC) is the most accurate device for measuring the microdosimetric properties of a particle beam, showing to properly assess the relative biological effectiveness by linking the physical parameters of the ...
Bortot D.   +7 more
doaj   +1 more source

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