نتایج جستجو برای: electron beam irradiation
تعداد نتایج: 456538 فیلتر نتایج به سال:
Introduction: One of the treatment choices in breast cancer is Intra operative electron beam radiation therapy (IOERT). Due to high dose delivery in this procedure, shielding disk is used to protect organs at risk (OARs). In this study, we evaluate the OARs dose in the breast IOERT using Monte Carlo simulation with and without shielding disk in RANDO phantom. Material and Methods: Simulation ...
Murals are a significant cultural heritage of humanity, and one the conservation studies is to control growth microorganisms. General biocide agents can be used preserve murals while also providing new organic carbon sources increasing environmental pollution. In recent years, radiation technology has shown promising prospects for use in protection. Five microorganisms often found were irradiat...
A compact liquid-lithium target (LiLiT) was built and tested with a high-power electron gun at the Soreq Nuclear Research Center. The lithium target, to be bombarded by the high-intensity proton beam of the Soreq Applied Research Accelerator Facility (SARAF), will constitute an intense source of neutrons produced by the (7)Li(p,n)(7)Be reaction for nuclear astrophysics research and as a pilot s...
We report experimental results on the kinetics of the electron-beam-induced reduction of WO, by in situ high-resolution electron microscopy. Electron-beam irradiation of WO, results in complete reduction to W. The process is surfaceinitiated through desorption of oxygen from the crystal surface, and the subsequent growth of tungsten was found to be a diffusion-controlled process. The damage rat...
In our experiment, it was observed that silicon nanocrystal rapidly grows with irradiation of electron beam on amorphous silicon film prepared by pulsed laser deposition, and shape of silicon nanocrystal is usually sphere in smaller nanoscale with less exposure time under electron beam, in which the quantum dots are prepared in nanoscale near 3 nm. In the electron interaction process, it was in...
Introduction: Pistachio is an important export product in some countries, especially Iran. Pistachios are with the highest risk of aflatoxin contamination between agricultural products. Aflatoxin B1 is the most potent carcinogenic aflatoxins. Aflatoxins have an important role in the etiology of cancer. Undoubtedly, the major problem is, Aspergillus flavus contamination Aflatoxin pr...
introduction: in clinical electron beams, most of bremsstrahlung radiation is produced by various linac head structures. this bremsstrahlung radiation dose is influenced by the geometry and construction of every component of the linac treatment head structures. thus, it can be expected that the amount of the contaminated photon dose due to bremsstrahlung radiation varies among different linacs,...
Irradiation-induced vacancy defects in multiwalled (MW) boron nitride nanotubes (BNNTs) are investigated via in situ high-resolution transmission electron microscope operated at 80 kV, with a homogeneous distribution of electron beam intensity. During the irradiation triangle-shaped vacancy defects are gradually generated in MW BNNTs under a mediate electron current density (30 A cm(-2)), by kn...
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