Electron paramagnetic resonance radiation dose assessment in fingernails of the victim exposed to high dose as result of an accident

2014 ◽  
Vol 53 (4) ◽  
pp. 755-762 ◽  
Author(s):  
Alexander Romanyukha ◽  
François Trompier ◽  
Ricardo A. Reyes ◽  
Doran M. Christensen ◽  
Carol J. Iddins ◽  
...  
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Radiation Dose ◽  
Resonance Radiation ◽  
Dose Assessment ◽  
High Dose ◽  
Paramagnetic Resonance ◽  
Radiation Dose Assessment ◽  
Electron Paramagnetic

scholarly journals Determining the Dose of Radiation and Radurisation Effects on the Antioxidant Activity of Fish and the Thermophysical Characteristics of Fish Muscle Tissue

Foods ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 130
Author(s):  
Roza T. Timakova ◽  
Sergey L. Tikhonov ◽  
Nataliya V. Tikhonova ◽  
Sergey V. Shikhalev
Keyword(s):  
Antioxidant Activity ◽  
Electron Paramagnetic Resonance ◽  
Radiation Dose ◽  
Muscle Tissue ◽  
Radiation Treatment ◽  
Fish Muscle ◽  
Radiation Processing ◽  
Thermophysical Characteristics ◽  
Paramagnetic Resonance ◽  
Electron Paramagnetic

The aim of this article is to develop a method for determining the dose of radiation in the processing of chilled fish and its effect on the antioxidant activity and thermophysical characteristics of muscle tissue. Radiation processing of chilled fish was performed using a linear electron accelerator model LEA-10-10S2. The dose of radiation was determined by the method of electron-paramagnetic resonance. After being treated with ionizing radiation, the cooled fish meets the requirements of the technical regulations of TR TU 021/2011 “On food safety” and TR EAEU 040/2016 “On the safety of fish and fish products”. As a result of our research, a correlation was established between the area of the Electron Paramagnetic Resonance (EPR) signal and the absorbed dose of the radiation dose. We proved a decrease in the antioxidant activity of muscle tissue of fish with an increase in radiation dose. It is established that radiation treatment of chilled fish affects the thermophysical properties of muscle tissue.

Electron Paramagnetic Resonance and Optical Study of Radiation-Induced Defect Centers in Doped Silica Glasses

1985 ◽  
Vol 61 ◽  
Author(s):  
Robert N. Schwartz ◽  
Gregory L. Tangonan ◽  
G. Richard Blair ◽  
Walee Chamulitrat ◽  
Larry Kevan
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Radiation Dose ◽  
Optical Fibers ◽  
Optical Loss ◽  
Complex Spectrum ◽  
Epr Spectrum ◽  
Paramagnetic Resonance ◽  
Silica Glasses ◽  
Defect Centers ◽  
Electron Paramagnetic

ABSTRACTGamma- and UV-induced defect centers in germanium and fluorine doped silica have been studied by electron paramagnetic resonance (EPR) spectroscopy. The complex spectrum at g≃2 in γ-irradiated germanium doped glass corresponds to a superposition of resonances from several germanium E′-centers. In UV-irradiated samples, however, the EPR spectrum is dominated by only one type of germanium E′-centers. Significant spectral simplification of γ-irradiated germanium doped silica can be achieved by heating or broadband photoirradiation. Similar results are observed in multimode germanium doped core optical fibers. UV-induced optical loss spectra in the 0.5–1.5 μm wavelength range were also measured in these core fibers as well as the growth kinetics of the UL-induced absorption. Gamma-irradiation of fluorine doped silica generated two different types of silicon E′-centers, Ea1. At lower radiation dose one sees a mixture of Ea1 and Ea2, but at higher radiation dose Ea2 dominates. A spectrum dominated by the Ea2 variant is also observed in LW-irradiated samples and in photobleached low gamma dose samples.

Electron paramagnetic resonance radiation dosimetry in fingernails

2009 ◽  
Vol 44 (1) ◽  
pp. 6-10 ◽  
Author(s):  
F. Trompier ◽  
A. Romanyukha ◽  
L. Kornak ◽  
C. Calas ◽  
B. LeBlanc ◽  
...  
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Radiation Dosimetry ◽  
Resonance Radiation ◽  
Paramagnetic Resonance ◽  
Electron Paramagnetic

scholarly journals Investigation of the electron paramagnetic resonance signal response in gamma-irradiated poly(lactic acid) for high-dose dosimetry

2018 ◽  
Vol 64 (5) ◽  
pp. 472
Author(s):  
Fernando Ureña-Núñez ◽  
Salvador Galindo
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Lactic Acid ◽  
Gamma Ray ◽  
Detection Threshold ◽  
Poly Lactic Acid ◽  
High Dose ◽  
Paramagnetic Resonance ◽  
Epr Signal ◽  
Signal Response ◽  
Electron Paramagnetic

This paper is concerned with the investigation of the Electron Paramagnetic Resonance (EPR) signal response to Co60 gamma-ray radiation on poly(L-lactic acid) (PLA). The aim of this study is to assess the usefulness of PLA as a high-dose dosimeter. The EPR-signal response of PLA has been investigated to determine some of its dosimetric characteristics such as: signal intensity versus gamma dose received, zero-dose response, signal fading, signal repeatability, batch homogeneity, detection threshold, and stability under simulated sunlight exposure. It is concluded that PLA might be used as a high-dose dosimeter.

Prospects for the application of the electron paramagnetic resonance method for the identification and dose assessment of irradiated food products

2021 ◽  
pp. 8-13
Author(s):  
Оксана Владимировна Тхорик ◽  
Мария Геннадьевна Помясова ◽  
Дарья Игоревна Петрухина ◽  
Ирина Владимировна Полякова
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Resonance Method ◽  
Food Products ◽  
Dose Assessment ◽  
Paramagnetic Resonance ◽  
Electron Paramagnetic Resonance Method ◽  
Irradiated Food ◽  
Electron Paramagnetic

Работа рассматривает мировой опыт по исследованию радиационно-обработанной пищевой продукции методом электронного парамагнитного резонанса (ЭПР). Работа проведена с целью оценки перспективности применения метода ЭПР-спектрометрии для идентификации радиационно-обработанной продукции при оценке качества продукции, поступаемой на продовольственный рынок. Метод ЭПР-спектрометрии заключается в идентификации и дозовой оценке радиационно-обработанной и необработанной продукции методом анализа ЭПР-спектров исследуемого образца. Рассмотрены ЭПР-спектры основных видов исследуемых продовольственных продуктов (мясная и рыбная продукция, свежие овощи и фрукты, специи, сухофрукты и орехи). Определены основные параметры ЭПР-спектра, являющиеся маркерами облучения продукции (амплитуда и ширина пика, отношение сигнал/шум, g-фактор). Выявлены основные факторы, влияющие на внешний вид ЭПР-спектра (доза облучения и время, прошедшее после облучения, плотность исследуемого продукта, его атомное и молекулярное строение, химический состав). По итогам проделанной работы планируется создание базы данных, включающей в себя сведения об облученной продукции, основных характеристиках ЭПР-спектров, библиографическую справку и др.

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