Results 31 to 40 of about 6,588 (195)

Cálculo, usando o código MCNPX, de doses equivalentes no tratamento 3D-CRT de câncer de próstata, com gantry operando a 45°, 135°, 225° e 315°

Brazilian Journal of Radiation Sciences, 2020
O Instituto Nacional do Câncer José Alencar Gomes da Silva - INCA adota como protocolo padrão no tratamento de câncer de próstata, na técnica de Radioterapia Tridimensional Conformada (3D-CRT), o uso da incidência do feixe em 4 angulos, 0°, 90º , 180º e ...
Eduardo Fonseca, Claudio Oliveira, Wilson Rebello, Marcos Paulo Medeiros, Clóves Fonseca, Camila Baptista   +5 more
doaj   +1 more source

Simulating Proton Radiation Tolerance of Perovskite Solar Cells for Space Applications

Advanced Energy and Sustainability Research, Volume 4, Issue 12, December 2023., 2023
Dang‐Thuan and co‐authors suggest a novel approach for predicting proton‐radiated degradation in perovskite solar cells. They combine ion scattering and optoelectronic simulations to overcome experimental constraints. FAMAPbI3‐based (lighter materials) cells show higher radiation tolerance than CsPbI2Br (heavier materials).
Dang-Thuan Nguyen, Daniel Walter, Klaus J. Weber, The Duong, Thomas P. White   +4 more
wiley   +1 more source

Determination of fluid dynamic parameters through imports of CFD images validated in experiments for the MCNPX code.

Brazilian Journal of Radiation Sciences, 2021
Como medições não intrusivas de transmissão de raios gama, uma contribuição significativa para os modelos de estrutura de fluxo que descrevem o sistema FCC riser multifásico.
Victor Hugo Farias Ferreira da Silva, Carlos Costa Dantas, Silvio de Barros Melo, Fernando Roberto de Andrade Lima, Pamalla Rafaelly Barbosa de Oliveira, Tennyson Accetti Resende Filho, Jorge Alexandre Gomes Lins, Eudes Bertony Vieira, Bruno Gomes Andrade, Milton Santos Viana   +9 more
doaj   +1 more source

Evaluating the induced photon contamination by different breast IOERT shields using Monte Carlo simulation

Journal of Applied Clinical Medical Physics, Volume 24, Issue 11, November 2023., 2023
Abstract Background and Objective Avoiding the underlying healthy tissue over‐exposure during breast intraoperative electron radiotherapy (IOERT) is owing to the use of some dedicated radioprotection disks during patient irradiation. The originated contaminant photons from some widely used double‐layered shielding disks including PMMA+Cu, PTFE+steel ...
Hamid Reza Baghani, Mostafa Robatjazi
wiley   +1 more source

Determination of gamma-ray transmission factors of WO3–TeO2–B2O3 glasses using MCNPX Monte Carlo code for shielding and protection purposes

Applied Rheology, 2022
The aim of this study is to assess the individual gamma-ray transmission factors (TFs) and some fundamental gamma-ray attenuation properties of several types of glasses based on WO3–TeO2–B2O3 glasses system.
ALMisned Ghada, Sen Baykal Duygu, Susoy Gulfem, Kilic Gokhan, Zakaly Hesham M. H., Ene Antoaneta, Tekin Huseyin Ozan   +6 more
doaj   +1 more source

Neutronic Evaluation of MSBR System Using MCNP Code

Brazilian Journal of Radiation Sciences, 2021
The concept of Molten Salt Reactor use Th to breed fissile 233U, where an initial source of fissile material needs to be provided. However, there is no available 233U and so; the fissile fuel supply is one of the unresolved problems.
Clarysson Alberto Mello da Silva, Alana Lima Vieira, Isabella Resende Magalhães, Claubia Pereira   +3 more
doaj   +1 more source

Development of a stand‐alone precalculated Monte Carlo code to calculate the dose by alpha and beta emitters from the Ra‐224 decay chain

Medical Physics, Volume 50, Issue 8, Page 5176-5188, August 2023., 2023
Abstract Background Recent developments in alpha and beta emitting radionuclide therapy highlight the importance of developing efficient methods for patient‐specific dosimetry. Traditional tabulated methods such as Medical Internal Radiation Dose (MIRD) estimate the dose at the organ level while more recent numerical methods based on Monte Carlo (MC ...
Mojtaba Hoseini‐Ghahfarokhi, Yuji Kamio, Julien Mondor, Keyvan Jabbari, Jean‐François Carrier   +4 more
wiley   +1 more source

Validation and study of different parameters in the simulation of diagnostic X-ray spectra using the MCNPX code

Brazilian Journal of Radiation Sciences, 2023
In radiology, knowing the X-ray spectrum characteristics makes it possible to estimate the absorbed dose in the patient and to improve image quality. In this study, an X-ray generator was proposed using the MCNPX code and to validate it, the simulated ...
K.C.W. Consatti, W. S. Santos, J. V. B. Valença, M. T. Yoshizumi   +3 more
doaj   +1 more source

Beta-backscattering Thickness-meter Design and Evaluation with Fuzzy TOPSIS Method

Nukleonika, 2014
An industrial gauge for measuring thickness of a gold coating layer deposited on a steel base through detection of the backscattered beta particles has been described.
Arjhangmehr Afshin, Mohammadzadeh Mohammad, Hossein Feghhi Seyed Amir, Hassanpour Saeed Tasouji   +3 more
doaj   +1 more source

The comparison of five neutron sources via 7Li(p,n) reaction for the design of a facility based on prompt gamma ray neutron activation analysis (PGNAA) in vivo detections of boron [PDF]

Acta Periodica Technologica, 2020
Prompt Gamma Ray Neutron Activation Analysis (PGNAA) is a useful nondestructive method with numerous applications. In this study neutron yield from 7Li(p,n) reaction with proton energies of 2.5, 3, 4, 4.5 and 5 MeV was used in order to provide ...
Fantidis J.G., Nicolaou G.E.
doaj   +1 more source