نتایج جستجو برای: biological dosimetry
تعداد نتایج: 471016 فیلتر نتایج به سال:
In this paper, a multiband antenna is proposed for investigating biological effects of microwaves radiation in 2 GHz, 3.5 GHz and 5.2 GHz bands to simulate exposure during cellular phone or wireless LAN uses. The antenna realizes localized exposure of a rat head in these frequency bands. Numerical dosimetry result shows good localization for 2 week-old rat model.
A new zero–inflated Poisson model is introduced for cytogenetic estimation of partial body radiation dose and fraction of the body irradiated. Bayes factors are also presented to detect if a sample of chromosomal aberrations in blood cells results from partial or whole body irradiation. One example of simulated cytogenetic exposure is shown to demonstrate the usefulness of this methodology in c...
Microbeam radiation therapy (MRT) using high doses of synchrotron X-rays can destroy tumours in animal models whilst causing little damage to normal tissues. Determining the spatial distribution of radiation doses delivered during MRT at a microscopic scale is a major challenge. Film and semiconductor dosimetry as well as Monte Carlo methods struggle to provide accurate estimates of dose profil...
Biological monitoring of exposure to chemicals has the objective of defining the so-called 'internal dose' or 'internal exposure level', and has been attempted by a variety of experimental approaches. Two categorical types of measurements can be made for this purpose: (1) measurement of concentrations of chemicals (or their metabolites) in body fluids or excreta; or (2) measurement of toxicolog...
Biological Dosimetry - Cytogenetics Findings At Persons Occupationally Exposed To Ionizing Radiation
Evaluation of LiF:Mg,Ti thermoluminescence dosemeters (TLDs) according to the high-temperature ratio (HTR) method enables the determination of the dose-average linear energy transfer (LET), the mean quality factor and the dose equivalent in mixed radiation fields of unknown composition. The neutron contribution is assessed by the Extended Pair method calibrated in the CERN-EU High-Energy Refere...
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