Results 31 to 40 of about 169,903,045 (266)
NeuroImage, 2023 The ability to collect high-quality neuroimaging data during ambulatory participant movement would enable a wealth of neuroscientific paradigms. Wearable magnetoencephalography (MEG) based on optically pumped magnetometers (OPMs) has the potential to ...
Niall Holmes +15 more
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Time-dependent evaluation of machine and shielding activation for medical accelerator systems: Self-consistent numerical evaluation of concrete shielding activation for proton therapy systems [PDF]
, 2023 Next-generation proton therapy centres are evolving towards compact designs to reduce construction and decommissioning costs. These centres typically combine clinical treatments with research programs, leading to higher beam currents and longer irradiation times than in clinical conditions, thus producing a more significant number of secondary ...
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Concrete shielding activation for proton therapy systems using BDSIM and FISPACT-II
Journal of Physics: Conference Series, 2023 AbstractProton therapy systems are used worldwide for patient treatment and fundamental research. The generation of secondary particles when the beam interacts with the beamline elements is a well known issue. In particular, the energy degrader is the dominant source of secondary radiation.
Ramoisiaux, Eliott +6 more
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A Review of Magnetic Shielding Technology for Space Radiation
Radiation, 2023 The space radiation environment outside the protection of the Earth’s magnetosphere is severe and difficult to shield against. The cumulative effective dose to astronauts on a typical Mars mission would likely introduce risk exceeding permissible limits ...
Kristine Ferrone +5 more
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A potential solution to GMAW gas flow optimisation [PDF]
, 2012 A number of self-regulating shielding gas valves have been developed to synchronise the shielding gas flow rate to the welding current being used in the gas metal arc welding process (GMAW).
Campbell, Stuart +3 more
core +3 more sources
A computational fluid dynamic analysis of the effect of side draughts and nozzle diameter on shielding gas coverage during gas metal arc welding [PDF]
, 2012 Extensive experimental trials were conducted, emulating the conditions modelled, in order to validate the computational fluid dynamic results. Final results demonstrated that a more constricted nozzle was more effective at creating a stable gas column ...
Campbell, Stuart +4 more
core +4 more sources
Development of hybrid shielding system for large-area Compton camera: A Monte Carlo study
Nuclear Engineering and Technology, 2020 s: Compton cameras using large scintillators have been developed for high imaging sensitivity. These scintillator-based Compton cameras, however, mainly due to relatively low energy resolution, suffer from undesired background-radiation signals ...
Jae Hyeon Kim +4 more
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Electrical engineering & ElectromechanicsProblem. Most studies of power frequency magnetic field reduced to safe level in in residential buildings located near overhead power lines carried out based on passive or active electromagnetic shielding, but there is no methodology for designing active-
B. I. Kuznetsov +5 more
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Electrical engineering & Electromechanics, 2023 Aim. Development the method of multi-objective parametric design for robust system of active canceling of magnetic field based on binary preference relations of local objective for multi-objective minimax optimization problem. Methodology.
B. I. Kuznetsov +5 more
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Electrical engineering & ElectromechanicsProblem. Normalization of overhead power lines magnetic field level in residential building. Goal. Normalization of overhead power line magnetic field by optimization of combined electromagnetic shielding system, consisting of active and passive parts ...
B. I. Kuznetsov +5 more
doaj +1 more source