Simulation scattering radiation. Medical search. Frequent questions

High-accuracy physical optics calculation methods used in the "Synchrotron Radiation Workshop" (SRW) allow for multiple applications of this code in different areas, covering development, commissioning, diagnostics and operation of X-ray instruments at light source facilities. (spiedigitallibrary.org)
Oleg Chubar , Maksim Rakitin , Yu-Chen Karen Chen-Wiegart , Andrei Fluerasu , and Lutz Wiegart "Simulation of experiments with partially coherent x-rays using Synchrotron Radiation Workshop", Proc. (spiedigitallibrary.org)
Simulations of coherent scattering experiments at storage ring synchrotron radiation. (spiedigitallibrary.org)
Within the framework of the γ-ray pulsar outer gap model, e ± pairs in the pulsar magnetosphere are produced by the cascade of e ± pairs through synchrotron radiation of the return current from the outer gap. (u-strasbg.fr)
He has been responsible for building the beamline FemtoMAX at MAX IV and is a frequent user of Synchrotron radiation facilities (including MAX IV) and Free-electron lasers. (lu.se)

Predictive design of REHEDS experiments with radiation-hydrodynamic simulations requires knowledge of material properties (e.g. equations of state (EOS), transport coefficients, and radiation physics). (sandia.gov)
In addition, the NIST Electron Elastic-Scattering Cross-Section Database (SRD 64) and the NIST Database of Cross Sections for Inner-Shell Ionization by Electron or Positron Impact (SRD 164) provide data for Monte Carlo simulations of electron transport in matter and for applications in atomic physics, plasma physics, radiation physics, and materials analysis by electron-probe microanalysis. (nist.gov)
Monte Carlo (MC) simulation is recognized as the "gold standard" for biophotonic simulation, capturing all relevant physics and material properties at the perceived cost of high computing demands. (frontiersin.org)
Altair DesignAI combines physics-based simulation-driven design and machine learning-based AI-driven design to create high-potential designs earlier in development cycles. (altair.com)
In new research, UCLA space scientists have successfully modeled and explained the unprecedented behavior of this third ring, showing that the extremely energetic particles that made up this ring, known as ultra-relativistic electrons, are driven by very different physics than typically observed Van Allen radiation belt particles. (sciencedaily.com)
In the past, scientists thought that all the electrons in the radiation belts around the Earth obeyed the same physics," said Yuri Shprits, a research geophysicist with the UCLA Department of Earth and Space Sciences. (sciencedaily.com)
The first five projects are predetermined and from different subject areas (e.g., astronomy, computational biology, theoretical chemistry, particle physics and medical radiation physics). (lu.se)

Using a combination of double-scatter events in organic glass scintillators, photo-absorption in CeBr 3 , and pulse shape discrimination (PSD) for particle classification, the H2DPI is able to provide both gamma ray and fast neutron images simultaneously 4 . (nature.com)
In this case, we monitor the radiation induced changes of G5P during bio-SAXS measurments and the resulting microscopic energy-damage relation was determined from microdosimetric calculations by Monte-Carlo based particle scattering simulations with TOPAS / Geant4 and a custom target-model. (rsc.org)
Cerenkov radiation is produced when a high-energy, charged particle travels with a velocity that exceeds the speed of light through a medium ( 16 - 19 ). (snmjournals.org)
At this laser intensity, theory and particle-in-cell simulations predict a high conversion of laser power into a flash of gamma rays generated mainly via nonlinear Thomson scattering, in net contraposition with the radiation generate at laser intensities below 10 21 W/cm 2 , which are fundamentally bremsstrahlung dominated and strongly dependent on the target material. (eli-np.ro)
Microphysical and radiative transfer simulations as well as remote sensing implementations often require the conversions of particle size distributions (PSDs) in terms of the number concentration, projected area, and volume. (ametsoc.org)
The experimentally determined angular radiation distribution of irradiated SiC samples is applied to fit a collision-based Monte Carlo (MC) model with a continuous participating media defining the particle suspension. (silverchair.com)

When radiation and electron temperatures fall out of equilibrium, however, non-LTE effects can profoundly change material properties and diagnostic signatures. (sandia.gov)
NIST Simulation of Electron Spectra for Surface Analysis. (nist.gov)
Other research areas of interest are the study of quantum radiation reaction created by plasma electrons accelerated to GeV energies, and the production of electron-positron pairs in huge abundance and highly energetic gamma-rays emerging from the laser pulse interaction with electrons. (eli-np.ro)
A simulation using FLUKA is shown in the worst case of electron loss at the bend magnet T85 of the transfer line from the 100 MeV racetrack Microtron. (lu.se)
To reduce electron losses and decrease radiation levels around the syn-chrotron, optimizations of the electron beam during injection into the storage ring, ramping and standard operation were carried out. (lu.se)

A system producing γ radiation by scattering of light photons on high energy electrons, with tunable energy of the photons up to 19.5 MeV, spectral density above 10 3 ph/s/eV and ~ 0.5 % relative bandwidth. (eli-np.ro)
X-ray tracing simulations used to design the beamline optics have predicted a total photon flux of 1012-1013 photons s-1 and a degree of coherence of up to 10% at 7.1 keV. (lu.se)
Interaction of a high-intensity optical laser beam with a solid target can generate `hot' electrons, which generate radiation hazards (mainly bremsstrahlung photons and neutrons) from interaction of hot electrons with target and the surrounding materials. (lu.se)
Monte Carlo refers to a technique first proposed by Metropolis and Ulam to simulate physical processes using a stochastic model.1 In a radiative transport problem, the Monte Carlo method consists of recording photons histories as they are scattered and absorbed. (lu.se)

On the basis of several experiments, it was recognized that most of the properties of this radiation are similar to those of electromagnetic waves of very short wavelengths. (scirp.org)
In an attempt to improve the reliability of such experiments, the reduction of radiation damage occurring from exposure to X-rays is required. (rsc.org)
This presentation focuses on the application of the SRW code for the simulation of experiments at these facilities. (spiedigitallibrary.org)
The most complete and most detailed simulation of experiments with SRW is possible in the area of elastic coherent scattering, where the interaction of radiation with samples can be described with the same transmission-type "propagators" that are used for the simulation of fully- and partially-coherent radiation propagation through X-ray optical elements of beamlines. (spiedigitallibrary.org)
ELI-NP will allow, in the several areas available, experiments based on the ultra-short, high-power laser pulses, experiments based on the high-intensity γ beam, and also experiments in which both types of radiation may be used. (eli-np.ro)
Using NSE experiments, we observed a high internal flexibility of the intrinsically disordered MBP and the denatured BSA in addition to centre-of-mass diffusion detected by dynamic light scattering. (lu.se)
To obtain a molecular understanding of IDPs, a combined approach of experiments and simulations is useful. (lu.se)

Herein, we demonstrate real-time visualization of gamma ray and neutron radiation detector data in MR using the Microsoft HoloLens 2 smart glasses, significantly reducing user interpretation burden. (nature.com)
Quasielastic incoherent neutron scattering (QENS) is a well-suited experimental method to study protein dynamics from the picosecond to several nanoseconds and in the Ångström length-scale. (lu.se)
By enabling both time resolution and structural detail Time-Resolved Small Angle X-ray/Neutron Scattering (TR-SAXS/TR-SANS) is uniquely suited to interrogate complex self-assembly reactions and to provide a molecular understanding of self-assembly pathways. (lu.se)

When scattering is neglected, sea ice emissivity can be modelled through radiative transfer. (wikipedia.org)
Since sea ice is non-magnetic, it can be calculated from relative permittivity alone: n i = ϵ i {\displaystyle n_{i}={\sqrt {\epsilon _{i}}}} Emissivity calculations based strictly on radiative transfer tend to underestimate the brightness temperatures of sea ice, especially in the higher frequencies, because both included brine and air pockets within the ice will tend to scatter the radiation. (wikipedia.org)
Furthermore, the effect of including full polarization treatment in forward radiative transfer simulation on dust property retrieval is also investigated. (nasa.gov)

A passive microwave instrument detects objects through emitted radiation since different substance have different emission spectra. (wikipedia.org)
Interpreting experimental results requires accurate models of diagnostic observables (e.g. detailed emission, absorption, and scattering spectra). (sandia.gov)
The transition from the line spectra characteristic of particular atoms to the broad and smooth spectrum of black-body radiation is kind of amazing. (scienceblogs.com)
be able to decide the symmetry characteristics of diatomic and some simple polyatomic molecules based on analysis of different spectra for IR and Raman scattering. (lu.se)

these are 1) direct dose measurement on a patient, 2) dose measurements in physical phantom, and 3) Monte Carlo simulations. (scirp.org)
A key aspect of GISAXS data analysis is the accurate simulation of samples to match the measurement. (lbl.gov)
An intensive radiation measurement using online and passive radiation monitoring were taken places around foreseen hot spots and in general places around both tunnels. (lu.se)

Both major and minor atmospheric species could be readily identified, through their absorption features in the scattered solar spectrum (below 3 µm) and the thermal planetary emission (above 3 µm), with a very high signal/noise ratio. (esa.int)
MC is also the standard of care for ionizing radiation therapy (IRT), where the coefficients of absorption and scattering are lower resulting in significantly fewer interaction events per photon and hence much lower compute requirements. (frontiersin.org)
since each photon undergoes a very large number of scattering events prior to absorption (and hence causing cell damage), the cost of computational modeling is correspondingly increased. (frontiersin.org)

However, due to the incoherent nature of scatter radiation and the complex dependence of the SRF on many physical and imaging parameters, including primary photon energy, energy resolution and energy window of the detection system, the distribution and configuration of the radioactive sources, and the composition and geometry of the scattering medium, it is difficult to derive an analytic expression for the SRF. (johnshopkins.edu)

The interaction of sea ice with electromagnetic radiation in the microwave range is still not well understood. (wikipedia.org)
The detailed analysis of our simulations and the nonthermal emission calculations show that interaction between a recollimation shock and traveling shock produce a typical and clear signature in both the single-dish light curves and in the VLBI observations: the flaring peaks are higher and delayed with respect to the evolution of a perturbation through a conical jet. (aanda.org)
The aim of the course is to provide you with fundamental knowledge related to the propagation of light through, and interaction with, highly scattering and absorbing media, such as biomedical tissues and blood samples. (lu.se)

We are finding now that radiation belts consist of different populations that are driven by very different physical processes. (sciencedaily.com)
Describe various techniques for Monte Carlo simulations of naturally stochastic processes, such as scattering processes. (lu.se)
Conduct Monte Carlo simulations of naturally stochastic processes. (lu.se)
be able to describe how a molecule interacts with electromagnetic radiation via electric dipole transitions and Raman scattering processes. (lu.se)
The "slow" processes of individual allocation and growth, population dynamics and disturbance are implemented once each simulation year (Figure 1). (lu.se)

As allowances are made for better global coverage of temperature observations, El Niño/La Niña, solar radiation, and volcanic aerosols, the simulated surface temperature moves back toward the actual measured temperature over this period. (skepticalscience.com)
Because particulate pollutants scatter, diffuse, and absorb incoming solar radiation, a net negative radiative forcing, decreased air pollution can yield surface warming. (cdc.gov)

Wang, R & Jin, JM 2007, ' A finite element-boundary integral formulation for numerical simulation of scattering by discrete body-of-revolution geometries ', Electromagnetics , vol. 27, no. 2-3, pp. 65-86. (illinois.edu)
Therefore, it is of great significance to simulate the vibration process by numerical simulation method and compare it with field experiment. (techscience.com)

These radiations are produced mainly by machines when high voltage electrons interact with matter. (scirp.org)
Since the discovery of the Van Allen radiation belts in 1958, space scientists have believed these belts encircling Earth consist of two doughnut-shaped rings of highly charged particles -- an inner ring of high-energy electrons and energetic positive ions and an outer ring of high-energy electrons. (sciencedaily.com)
Shprits' group also found that very low-frequency electromagnetic pulsations that were thought to be dominant in accelerating and losing radiation belt electrons did not influence the ultra-relativistic electrons. (sciencedaily.com)
The Van Allen radiation belts "can no longer be considered as one consistent mass of electrons. (sciencedaily.com)
This is the main reason the acceleration and scattering into the atmosphere of ultra-relativistic electrons by these waves is less efficient. (sciencedaily.com)

Using Monte Carlo simulations, we generate a sample of the mature γ-ray pulsars in our Galaxy and calculate the positron production rate from these pulsars. (u-strasbg.fr)
This paper discusses internal reflection of a photon at boundaries, shows how the phase function may be used to generate new scattering angles, discusses a few variance reduction schemes to improve efficiency, gives a method for estimating the uncertainty in any Monte Carlo calculation, and gives results for validating the Monte Carlo implementation. (lu.se)

Particular attention is paid to the analysis of visibility of speckles and intensity levels in the scattered radiation patterns at different degrees of coherence of the radiation entering the sample. (spiedigitallibrary.org)
The distorted-wave Born approximation (DWBA) is a widely used model for the simulation of GISAXS patterns. (lbl.gov)

A hybrid technique is presented that combines the finite element and boundary integral methods for simulating electromagnetic scattering from discrete body-of-revolution (DBOR) geometries. (illinois.edu)
12. Faghihi, F. and H. Heydari, "A combination of time domain finite element-boundary integral and with time domain physical optics for calculation of electromagnetic scattering of 3-D structures ," Progress In Electromagnetics Research , Vol. 79, 463-474, 2008. (jpier.org)

The simulations with inhomogeneous fields describe the data qualitatively better than the homogeneous case, suggesting that indeed field perturbations are responsible for the measured losses. (researchgate.net)
We briefly describe used simplifications, which substantially reduce numerical simulations. (intechopen.com)

Since we assume plane-parallel geometry, all reflected rays will be at the same angle and we need only account for radiation along a single line-of-sight. (wikipedia.org)

We computed the nonthermal emission, including adiabatic and synchotron losses, resulting from the simulation. (aanda.org)
In single photon emission computed tomography (SPECT), scattered radiation results in a loss of image contrast, spatial resolution and quantitative accuracy. (johnshopkins.edu)

Since the discovery of the Van Allen radiation belts, scientists believed these belts consisted of two rings of highly charged particles. (sciencedaily.com)
A combination of the T-matrix method and an improved geometric optics method is applied to the computation of the single-scattering properties of spheroidal particles with size parameters ranging from the Rayleigh to geometric optics regimes. (nasa.gov)
In addition, we investigate the impact of different size descriptors on the single-scattering properties of nonspherical particles. (ametsoc.org)
Consistent single-scattering properties among different nonspherical particles with the same size parameter are found when the size descriptor is the effective radius, whereby their mechanisms are suggested based on a modified anomalous diffraction theory. (ametsoc.org)

A detector operator could hereby position themselves at a safe distance and observe the spatial distribution, or 'hot spots', of radiation without the need to move the detector. (nature.com)
The parameterization of the SRF provides insight into the spatial distribution of detected scattered radiation in SPECT and is useful in developing methods to compensate for its effects in order to improve both the quality and quantitative accuracy of SPECT images. (johnshopkins.edu)

Each layer is characterized by its physical properties: temperature, Ti, complex permittivity, ϵ i {\displaystyle \epsilon _{i}} and thickness, Δ z i {\displaystyle \Delta z_{i}} , and will have an upwards component of the radiation, T i ↑ {\displaystyle T_{i}\uparrow } , and a downwards component, T i ↓ {\displaystyle T_{i}\downarrow } , passing through it. (wikipedia.org)
In conditions of Local Thermodynamic Equilibrium (LTE), these material properties and observables can be pre-computed with relatively high accuracy and subsequently tabulated on simple temperature-density grids for fast look-up by simulations. (sandia.gov)
Figure 1 - The animation shows the CMIP5 model simulations compared to the HADCRUT4 surface temperature dataset . (skepticalscience.com)
Climate model projections typically involve a large number of individual model simulations which are spun-up well into the past and then run forward into the future to estimate climatic features of the Earth - such as global surface temperature trends. (skepticalscience.com)
Figure 2 - A typical graphic displaying climate model simulations of global surface temperature. (skepticalscience.com)
An apparatus for controlling the glancing angle of incident beam from a synchrotron source has been newly built for structural studies of high temperature liquids by the anomalous X-ray scattering (AXS) method in the reflection mode. (elsevierpure.com)
The climate data are monthly or daily values of mean daily air temperature, precipitation and either incoming shortwave radiation or sunshine (the complement of percentage cloudiness). (lu.se)

These results are interpreted in terms of indirect radiation damage by reactive secondary species, as well as post-irradiation effects, related to preferential-exclusion of the cosolute from the protein surface. (rsc.org)
A complete "source-to-detector" simulation of such an experiment for a lithographic sample is described here together with comparisons of the simulated coherent scattering data with actual measurements results, obtained at the Coherent Hard X-ray (CHX) beamline of the National Synchrotron Light Source II (NSLS-II). (spiedigitallibrary.org)
4 , 5 ] to study the effects of filled trenches on the scattering of waves, and the results showed that the bright scattering effect is related to the cross-sectional area of the barrier but not to the shape of the barrier. (techscience.com)
We validate the calculations by both experimental results and the other numerical simulations. (intechopen.com)
SkyFlow Plus provides computationally efficient scatter correction tailored to your individual patient, based on a collection of Monte Carlo simulation results (scatter kernels). (philips.com.tr)
Radiation measurements results received before and after the chopper installation in the linac and additionally problems with radiation levels while the beam current is increasing to the designed 500mA value will be presented. (lu.se)

At our division you will have the opportunity to challenge yourself in both lab work connected to lasers and combustion and programming where image analysis and chemical simulation are key elements in our research. (lu.se)

Nor can the climate models predict the timing and duration of volcanic eruptions and industrial pollution, both of which eject light-scattering aerosols into the atmosphere and therefore reduce surface warming. (skepticalscience.com)
Simulations showed that aerosols alter the distribution of moisture and heat in the Pacific storm track , a relatively narrow zone where cyclones form and travel and a major driver of weather in the Northern Hemisphere. (machinedesign.com)
The scattering and radiative properties of mineral dust aerosols at violet-to-blue (0.412, 0.441, and 0.470 m) and red (0.650 m) wavelengths are investigated. (nasa.gov)

Proposed methods of x-ray scatter reduction will also be discussed. (ajnr.org)
Next, we have developed a tabular scheme and interpolation methods that compactly capture non-LTE effects for use in simulations and have implemented these tables in the GORGON magneto-hydrodynamic (MHD) code. (sandia.gov)
The course begins with a brief introduction to methods for Monte Carlo and molecular dynamics simulations. (lu.se)

The proposed method has been validated numerically and provides an efficient tool for the simulation of the scattering by DBOR geometries in electromagnetics. (illinois.edu)

We also introduce an alternative source search mode for situations of low event rates using a neural network and simulation based training data to provide a fast estimation of the source's angular direction. (nature.com)
Until now, radiation images and directional information are displayed on computer screens that project the data into 2D angular space, often in plots that convey intensity over the azimuth and altitude angles. (nature.com)
Finally, we have developed post-processing tools that use detailed tabulated non-LTE data to directly predict experimental observables from simulation output. (sandia.gov)
Data from real procedures at the operation room was attained to recreate a realistic energy spectrum, beam placement, and spread of the radiation source. (uib.no)
Altair's software products represent a comprehensive, open-architecture solution for data analytics, simulation, and high-performance computing. (altair.com)
The data processing for estimating three partials includes the intensity data obtained at the energy of 15.0 keV, which is far from both edges and the reverse Monte Carlo (RMC) simulation technique. (elsevierpure.com)
However, the analysis of such data is complicated because scattering arises from a mixture of many components, the information content in each spectrum is limited and there is no framework for simultaneous analysis of data from different data sources. (lu.se)
The similar problem is faced when resolving conformational ensembles from small angle scattering data. (lu.se)
The method applies Bayesian probabilistic model to analyze scattering data from mixtures of oligomeric species, allows for a modeling large structural ensembles, can be used to assess uncertainty of all parameters and minimizes over-fitting. (lu.se)

Lowering the target thickness, we will go across different acceleration regimes, from TNSA (Target Normal Sheath Acceleration) to RPA (Radiation Pressure Acceleration). (eli-np.ro)

Its reflection coefficient and radiation gain vary with the exposure of photodiode to light illumination and non-illumination state. (jpier.org)

Radiation imaging systems typically use double-scatter events of gamma rays or fast neutrons to reconstruct the incidence directional information, thus enabling source localization. (nature.com)

There would be a limit on the accuracy of physical measurements due to the finite precision of the computation in the simulation-check: Heisenberg uncertainty principle-and, as in games, randomness would be used as a fudge when precision limits were hit-check: quantum mechanics. (blogspot.com)

Small-angle X-ray scattering (SAXS) can be used for structural determination of biological macromolecules and polymers in their native states ( e.g. liquid phase). (rsc.org)
Magnetomechanics analysis for strongly coupled structural and magnetic multiphysics simulations . (everythingrf.com)

Ionizing radiation therapy (IRT) has become a main-line treatment for cancers, with well-developed workflows, numerical optimization based on Monte Carlo simulation, and rigorous quality-assurance procedures. (frontiersin.org)
We have generated SRFs using the Monte Carlo simulation method and investigated the characteristics of the scattered radiation by fitting the SRFs with fitting functions. (johnshopkins.edu)
Frey, EC & Tsui, BMW 1990, ' Parameterization of the scatter response function in spect imaging using monte carlo simulation ', IEEE Transactions on Nuclear Science , vol. 37, no. 3, pp. 1308-1315. (johnshopkins.edu)
Tsui, B. M.W. / Parameterization of the scatter response function in spect imaging using monte carlo simulation . (johnshopkins.edu)
Monte Carlo simulation and Mie theory were successfully applied to find the optimum size of titanium dioxide nanoparticles 30-200 nm in diameter suspended in a layer of a transparent medium, which ensure the most efficient attenuation and depolarization of UV radiation in the 288-400 nm wavelength range. (vtt.fi)
Monte Carlo simulation is a technique which is commonly used in machine learning, a core part of AI, to estimate the probability of outcomes given various inputs, uncertainties and system dynamics. (philips.com.tr)

By explaining these diverse observations with the model of asteroids being scattered, breaking up and accreting, I will provide a unified picture of white dwarf planetary systems. (lu.se)
I will calculate the rates at which asteroids are scattered onto orbits that take them within the Roche limit of the white dwarf, and compare these rates to the rates at which material falls onto the white dwarf as inferred from observations. (lu.se)

These preliminary studies indicate relevant pulsed power engineering design simulations can now be completed in (of order) several days, a significant improvement over pre-LDRD levels of performance. (sandia.gov)

Topics include organization, site, accelerators and beamlines as well as designation of areas, radiation monitors, dosimetry and the personnel safety system. (lu.se)

Conduct Monte Carlo and molecular dynamics simulations of equilibrium properties of complex systems. (lu.se)
During the spinup, the vegetation as well as soil and litter carbon pools accumulate and approach an equilibrium with the climate at the beginning of the subsequent, historical phase of the simulation. (lu.se)

And that simulation is about 100ms out of date by the time we experience it, except for selective parts that have been extrapolated in time to predict the "now. (luminous-landscape.com)
Xiulin Ruan Monte Carlo simulations for photon transport are commonly used to predict the spectral response, including reflectance, absorptance, and transmittance in nanoparticle laden media, while the computational cost could be high. (silverchair.com)

The greater propensity to scatter leads to light confinement within much smaller volumes around the implanted light source which facilitates treatment targeting. (frontiersin.org)
There would probably be an absolute speed limit to constrain the extent we could directly explore and impose a locality constraint on propagating updates throughout the simulation-check: speed of light. (blogspot.com)
The colors assigned to each patch, e.g. a leaf, exhibit constancy even when the light scattered from that patch has a different wavelength. (luminous-landscape.com)
Incandescent light bulbs produce a spectrum that's basically blackbody radiation, but if you think about it, that's kind of amazing given that the atoms making up the filament have quantized states, and can absorb and emit only discrete frequencies of light. (scienceblogs.com)
The simulation and experiment of this design at 1.52 GHz produce an obvious effect on light control with a maximum 6.6 dB gain variation on omnidirectional pattern. (jpier.org)
A good fraction of these cascade e ± pairs are reflected by the hard X-rays from the polar cap via resonant scattering and escape from the pulsar through the light cylinder. (u-strasbg.fr)

In this paper, an accurate algorithm for GISAXS simulations based on the multi-slice DWBA theory is presented. (lbl.gov)
In particular, fundamental properties of the Fourier transform have been utilized to develop an algorithm that accurately computes the average refractive index profile as a function of depth and the Fourier transform of the portion of the sample within a given slice, which are key quantities required for the multi-slice DWBA simulation. (lbl.gov)
Furthermore, this algorithm is general with respect to the sample structure, and does not require any sample-specific approximations to perform the simulations. (lbl.gov)
Explain the different sources of errors in numerical simulations and how the choice of algorithm may influence the convergence of simulations. (lu.se)

Imaging detector systems offer the ability to obtain the direction of incoming radiation, thus accelerating the search and enabling a search with less radiation exposure risk to the involved individuals 1 . (nature.com)
Medical personnel can often reduce their exposure with distance and sufficient radiation protection, as they do not have to be close to the radiation field. (uib.no)
One such method, is to use scavenger molecules to protect macromolecules against radicals produced during radiation exposure, such as reactive oxygen species (ROS). (rsc.org)
This indicates that Ectoine increases the possible exposure time before radiation-damage to G5P is observed. (rsc.org)

Particular emphasis will be placed on technical limitations to low-contrast detectability and radiation dose. (ajnr.org)
Radiation shielding and lead clothing is used to reduce their dose. (uib.no)
Monte Carlo (MC) simulations are the standard for calculating dose. (uib.no)
The aim of this study is to evaluate the feasibility of using MC simulations through FLUKA to calculate and evaluate the dose given to the interventional cardiologists (operator) for different radiation shielding. (uib.no)
The different radiation shielding had a definitive impact on the dose given to the operator according to the simulations. (uib.no)
A significant reduction of the dose was also observed when placing a lead blanket over the patient's body, outside the radiation field. (uib.no)
In contrast to conventional approaches that minimize the tube current time product of the CT scan, referred to as mAsTCM in the following, we herein propose a new method referred to as riskTCM, which aims at reducing the radiation risk to the patient by taking into account the specific radiation risk of every dose-sensitive organ. (bvsalud.org)

Any time radiation interacts with the body, it has the potential to damage the cells in the body, possibly leading to health effects. (scirp.org)

An operation room at Haukeland University Hospital (HUS) used for interventional cardiac procedures was recreated in FLUKA and used during the simulations. (uib.no)

Easy-to-use perfectly matched boundary radiation condition. (everythingrf.com)

These are delivered by asteroids scattered close to the white dwarf that break up and deposit their material in its atmosphere. (lu.se)

In this study we investigate the feasibility of applying the compatible solute, osmolyte and radiation protector Ectoine (THP(B)), as a scavenger molecule during SAXS measurements of the single-stranded DNA-binding protein Gene-V Protein (G5P/GVP). (rsc.org)

Radiation source localization and characterization are challenging tasks that currently require complex analyses for interpretation. (nature.com)
Grazing-incidence small-angle X-ray scattering (GISAXS) is an important technique in the characterization of samples at the nanometre scale. (lbl.gov)

The German physicist Roentgen, while studying the properties of cathode rays in 1885, found that a very penetrating radiation was coming from a discharge tube. (scirp.org)
Subsequently, the properties of this radiation were thoroughly investigated and established but they are still known as X-rays. (scirp.org)

although, depending on the scattering angle, an overestimate is noted in some cases. (nasa.gov)
The CoSAXS beamline at the MAX IV Laboratory is a modern multi-purpose (coherent) small-Angle X-ray scattering (CoSAXS) instrument, designed to provide intense and optionally coherent illumination at the sample position, enabling coherent imaging and speckle contrast techniques. (lu.se)
We have implemented a flexible Grazing Incidence Small-Angle Scattering (GISAXS) simulation code in the framework of the Distorted Wave Born Approximation (DWBA) that effectively utilizes the parallel processing power provided by graphics processors and multicore processors. (lbl.gov)
Fundamental progress in these diverse fields and small-angle x-ray scattering (SAXS) studies (Lafont must ultimately be based on a quantitative understanding of et al. (lu.se)

The characteristics of the passive dosimeter are that the radiation induces ionization in the material, which is proportional to the energy absorbed in matter. (scirp.org)

This fact can allow us to detect such interactions for stationary components lying outside of the region in which the losses are dominated by inverse Compton scattering. (aanda.org)

Anatomy4

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