Microwave frequency-electromagnetic field 10 GHz radiation exposure impact on rat skin: An oxidative stress insight

2018 ◽  
Author(s):  
Asheesh Gupta ◽  
Saurabh Verma ◽  
Kumar Vyonkesh Mani ◽  
Gaurav K. Keshri ◽  
Santanu Karmakar ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Electromagnetic Field ◽  
Radiation Exposure ◽  
Microwave Frequency ◽  
Rat Skin

scholarly journals High dietary iron and 137Cs radiation exposure induce oxidative stress and reduce bone mass

2012 ◽  
Vol 26 (S1) ◽  
Author(s):  
Evelyn Yuen ◽  
Jennifer L Morgan ◽  
Sara R Zwart ◽  
Estela Gonzales ◽  
Kaleigh Camp ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Bone Mass ◽  
Radiation Exposure ◽  
Dietary Iron ◽  
Reduce Bone Mass

scholarly journals High dietary iron and radiation exposure increase biomarkers of oxidative stress in blood and liver of rats

2012 ◽  
Vol 26 (S1) ◽  
Author(s):  
Jennifer L. L. Morgan ◽  
Corey A. Theriot ◽  
Honglu Wu ◽  
Scott M. Smith ◽  
Sara R. Zwart
Keyword(s):  
Oxidative Stress ◽  
Radiation Exposure ◽  
Dietary Iron ◽  
Biomarkers Of Oxidative Stress

scholarly journals DOPPLER SPECTRUM MATHEMATICAL MODEL OF SIGNAL SCATTERING FROM SEA SURFACE AT LOW GRAZING ANGLES

2019 ◽  
Vol 22 (3) ◽  
pp. 63-73
Author(s):  
Mikhail A. Borodin ◽  
Vyacheslav N. Mikhaylov ◽  
Polina A. Filippova
Keyword(s):  
Mathematical Model ◽  
Electromagnetic Field ◽  
Surface Condition ◽  
Scattering Problem ◽  
Microwave Frequency ◽  
Ecological Monitoring ◽  
Sea Surface ◽  
Doppler Spectrum ◽  
Random Component ◽  
Grazing Angles

Introduction. Doppler spectra of signals which are scattered from sea surface and received by radar is used in oceanology and ecological monitoring applications. Existing models of Doppler spectra have the limitation of application because they are based on empirical data in changing conditions. Variability of the observation conditions critically influence on microwaves scattering by sea surface at low grazing angles which is typical for marine radiolocations. Objective. The goal of investigation proposed in this article is to develop the mathematical model of Doppler spectra at low grazing angles for microwave frequency range. Materials and methods. The two-dimensional problem of the scattering of an electromagnetic field on a cylindrical deterministic surface is considered. For generating of sea surface realizations is used linear model with spatial sea spectrum Elfohaily. The solution of the scattering problem is obtained for the case of vertical polarization of the incident electromagnetic field by the method of an integral equation with the control of the error of the solution. The mathematical modeling of the Doppler Spectrum of signal scattered by sea surface is produced by method of statistical trial. The case where the direction of the observation of the sea surface by radar is perpendicular to the direction of the wind is considered. The electromagnetic filed scattered in the direction of the radar receiver as a function of time is calculated for each generated sea surface realizations. Further, the set of variables of the implementation of scattered field is calculated for implementation of the Doppler spectrum. Results. The set of implementations of the Doppler spectrum provided its mathematical model with consist of deterministic and random component. The approximation of each aforesaid component is suggested and mathematical expressions for value component calculation are presented. The analyze of modeling result is produced. Conclusion. The developed mathematical model is offered to use for the design of algorithm sea surface condition estimation and pollutant detection using the signal which received by radar.

scholarly journals The assessment of electromagnetic field radiation exposure for mobile phone users

2014 ◽  
Vol 71 (12) ◽  
pp. 1138-1143 ◽  
Author(s):  
Raimondas Buckus ◽  
Birute Strukcinskiene ◽  
Juozas Raistenskis
Keyword(s):  
Electromagnetic Field ◽  
Field Strength ◽  
Electric Field ◽  
Mobile Phone ◽  
Radiation Exposure ◽  
Electric Field Strength ◽  
Rural Area ◽  
Mobile Phones ◽  
Field Radiation ◽  
Made In

Background/Aim. During recent years, the widespread use of mobile phones has resulted in increased human exposure to electromagnetic field radiation and to health risks. Increased usage of mobile phones at the close proximity raises questions and doubts in safety of mobile phone users. The aim of the study was to assess an electromagnetic field radiation exposure for mobile phone users by measuring electromagnetic field strength in different settings at the distance of 1 to 30 cm from the mobile user. Methods. In this paper, the measurements of electric field strength exposure were conducted on different brand of mobile phones by the call-related factors: urban/rural area, indoor/outdoor setting and moving/stationary mode during calls. The different types of mobile phone were placed facing the field probe at 1 cm, 10 cm, 20 cm and 30 cm distance. Results. The highest electric field strength was recorded for calls made in rural area (indoors) while the lowest electric field strength was recorded for calls made in urban area (outdoors). Calls made from a phone in a moving car gave a similar result like for indoor calls; however, calls made from a phone in a moving car exposed electric field strength two times more than that of calls in a standing (motionless) position. Conclusion. Electromagnetic field radiation depends on mobile phone power class and factors, like urban or rural area, outdoor or indoor, moving or motionless position, and the distance of the mobile phone from the phone user. It is recommended to keep a mobile phone in the safe distance of 10, 20 or 30 cm from the body (especially head) during the calls.

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