Detection and measurement of low-intensity fluxes of ionizing radiation using a detector with a compensation channel

1992 ◽  
Vol 35 (6) ◽  
pp. 732-737
Author(s):  
N. N. Radaev
Keyword(s):  
Ionizing Radiation ◽  
Low Intensity ◽  
Compensation Channel

Interaction of low intensity ultrasound and ionizing radiation with the tumour cell surface

1971 ◽  
Vol 16 (2) ◽  
pp. 221-227 ◽  
Author(s):  
M H Repacholi ◽  
J P Woodcock ◽  
D L Newman ◽  
K J W Taylor
Keyword(s):  
Ionizing Radiation ◽  
Cell Surface ◽  
Tumour Cell ◽  
Low Intensity ◽  
Low Intensity Ultrasound

scholarly journals Thermal and non-thermal health effects of low intensity non-ionizing radiation: An international perspective

2018 ◽  
Vol 242 ◽  
pp. 643-658 ◽  
Author(s):  
Dominique Belpomme ◽  
Lennart Hardell ◽  
Igor Belyaev ◽  
Ernesto Burgio ◽  
David O. Carpenter
Keyword(s):  
Ionizing Radiation ◽  
Health Effects ◽  
International Perspective ◽  
Low Intensity

Modeling of the effect of low intensity ionizing radiation on MOS elements of VLSI circuits

2009 ◽  
Vol 73 (2) ◽  
pp. 252-255
Author(s):  
M. N. Levin ◽  
E. V. Bondarenko ◽  
A. V. Tatarintsev ◽  
V. R. Gitlin ◽  
V. A. Makarenko
Keyword(s):  
Ionizing Radiation ◽  
Vlsi Circuits ◽  
Low Intensity

Prototype of a Low-Cost Impedance Tomography Based on the Open-Hardware Paradigm

2021 ◽  
pp. 1-15
Author(s):  
David Edson Ribeiro ◽  
Valter Augusto de Freitas Barbosa ◽  
Clarisse Lins de Lima ◽  
Ricardo Emmanuel de Souza ◽  
Wellington Pinheiro dos Santos
Keyword(s):  
Ionizing Radiation ◽  
Low Cost ◽  
Region Of Interest ◽  
Surface Region ◽  
Data Acquisition System ◽  
Impedance Tomography ◽  
Open Hardware ◽  
Low Intensity ◽  
Electrical Potentials ◽  
Alternating Electric Current

Electrical Impedance Tomography (EIT) is a noninvasive, painless, and ionizing radiation-free technique for image acquisition of a region of interest. It is performed through electrical parameters. The method is based on the application of an alternating electric current pattern of low intensity through electrodes arranged around the surface region in order to obtain the image and also to measure the excitation electrical potentials. The aim of this study is to develop a device based in open hardware. Furthermore, the authors aim to build a prototype of a data acquisition system based on EIT. This device is the first step to obtain a complete and portable tomography equipment at a low cost.

The Role of Bak1 Methylation in the Induction of Chromosomal Aberrations under Chronic Low-Intensity External Radiation

2021 ◽  
Vol 65 (5) ◽  
pp. 29-34
Author(s):  
O. Tsymbal ◽  
D. Isubakova ◽  
E. Bronikovskaya ◽  
I. Milto ◽  
M. Khalyuzova ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Ionizing Radiation ◽  
Chromosomal Aberrations ◽  
Human Blood ◽  
Methylation Status ◽  
External Radiation ◽  
Blood Lymphocytes ◽  
Low Intensity ◽  
External Radiation Dose ◽  
Siberian Group

Purpose: To study the relationship between the methylation status of the Bаk1 promoter and the frequency of chromosomal aberrations in human blood lymphocytes under chronic low-intensity external ionizing radiation. Material and methods: The study was performed on 41 people (31 men and 10 women, aged from 36 to 83 years) who are former or current employees of the Siberian Group of Chemical Enterprises, who have been exposed or haven't been exposed to chronic low-intensity external radiation in the course of their professional activities. The workers included in the study were divided into two groups: the first – 15 people who did not have exposure, the second – 26 people who had external exposure (gamma radiation, total dose 89–716 mSv). Whole blood was used to isolate DNA and evaluate chromosomal aberrations in lymphocytes. The methylation status of the Bаk1 promoter was determined using methylsensitive PCR, which was performed after pretreatment of the isolated DNA with methylsensitive AoxI restrictase. The obtained quantitative data were analyzed using the Statistica 10. The differences were considered statistically significant at p ≤ 0.05. Results: The methylation status of the Bаk1 promoter in the study groups does not differ (p = 0.18). The study of the effect of external radiation dose on the methylation status of the Bak1 promoter showed that the unmethylated promoter prevails in workers with an average radiation dose of 273.37 ± 43.82 mSv, while the methylated promoter – in workers with an average radiation dose of 183.63 ± 20.58 mSv (p = 0.03). The unmethylated promoter Bаk1 is associated with an increased frequency of chromatid fragments in the blood lymphocytes of group 2 workers (p = 0.03). Conclusion: The status of methylation of the Bаk1 promoter in human blood lymphocytes under chronic low-intensity ionizing radiation does not change, but it is observed to depend on the radiation dose and is associated with an increased frequency of chromosomal aberrations (chromatid fragments). Thus, the unmethylated Bаk1 promoter prevails when the external radiation dose is increased. An increase in the frequency of chromatid fragments is associated with an unmethylated Bаk1 promoter. In addition, exposure to chronic low-intensity external radiation is accompanied by a decrease in the frequency of chromosomal fragments in the blood lymphocytes of workers of the Siberian Group of Chemical Enterprises.

scholarly journals DISORDERED REDOX METABOLISM OF BRAIN CELLS IN RATS EXPOSED TO LOW DOSES OF IONIZING RADIATION OR UHF ELECTROMAGNETIC RADIATION

2016 ◽  
Vol 38 (4) ◽  
pp. 238-241 ◽  
Author(s):  
A P Burlaka ◽  
M O Druzhyna ◽  
A Vovk Vovk ◽  
S M Lukin
Keyword(s):  
Electron Transport ◽  
Ionizing Radiation ◽  
Electromagnetic Radiation ◽  
Electron Transport Chain ◽  
Superoxide Radical ◽  
Brain Cells ◽  
Low Doses ◽  
Low Intensity ◽  
Transport Chain ◽  
Radical Generation

Aim: To investigate the changes of redox-state of mammalian brain cells as the critical factor of initiation and formation of radiation damage of biological structures in setting of continuous exposure to low doses of ionizing radiation or fractionated ultra high frequency electromagnetic radiation (UHF EMR) at non-thermal levels. Materials and Methods: The influence of low-intensity ionizing radiation was studied on outbred female rats kept for 1.5 years in the Chernobyl accident zone. The effects of total EMR in the UHF band of non-thermal spectrum were investigated on Wistar rats. The rate of formation of superoxide radicals and the rate of NO synthesis in mitochondria were determined by the EPR. Results: After exposure to ionizing or UHF radiation, the levels of ubisemiquinone in brain tissue of rats decreased by 3 and 1.8 times, respectively. The content of NO-FeS-protein complexes in both groups increased significantly (р < 0.05). In the conditions of ionizing or EMR the rates of superoxide radical generation in electron-transport chain of brain cell mitochondria increased by 1.5- and 2-fold, respectively (р < 0.05). In brain tissue of rats kept in the Chernobyl zone, significant increase of NO content was registered; similar effect was observed in rats treated with UHFR (р < 0.05). Conclusions: The detected changes in the electron transport chain of mitochondria of brain cells upon low-intensity irradiation or UHF EMR cause the metabolic reprogramming of cell mitochondria that increases the rate of superoxide radical generation and nitric oxide, which may initiate the development of neurodegenerative diseases and cancer. This article is part of a Special Issue entitled “The Chornobyl Nuclear Accident: Thirty Years After”.

SIMULATION OF THE EFFECTS OF IONIZING RADIATION IN LOW INTENSITY VLSI

10.12737/6084 ◽  
2014 ◽  
Vol 7 (2) ◽  
pp. 32-35
Author(s):  
Скляр ◽  
V. Sklyar
Keyword(s):  
Ionizing Radiation ◽  
Low Intensity ◽  
Intensity Radiation

The effects of degradation parameters from the effects of low-intensity radiation. Methods of obtaining parameters.

Correction of Aftereffects of Ionizing Radiation by Exposure to Low-Intensity Light

2014 ◽  
Vol 156 (5) ◽  
pp. 663-664 ◽  
Author(s):  
A. P. Bavrina ◽  
V. A. Monich ◽  
S. L. Malinovskaya ◽  
V. S. Ermolaev ◽  
E. A. Druzhinin ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Low Intensity
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