Summary. Introduction: Today, the growing human exposure to radiofrequency electromagnetic fields is of serious concern to the population and the international scientific community. Sources of radiofrequency electromagnetic fields in residential areas include mobile radio base stations, signal repeaters, wireless broadband access points, TV and radio transmitters, satellite earth stations, radar and radio relay stations. Launching of 5G mobile networks will further complicate the electromagnetic situation in inhabited areas, especially in megacities where the size of exposed population is the largest. In the system of measures contributing to protection of the population from adverse health effects of electromagnetic fields, standards (regulations and other documents establishing electromagnetic fields permissible levels) play a significant role and lay the foundation for organizational and technical measures of protection. High importance of standards in ensuring electromagnetic safety served as the basis for our study. The objective of the study was to perform a comparative analysis of radiofrequency electromagnetic fields standards for inhabited areas and approaches to setting electromagnetic fields exposure levels adopted by different countries and international organizations. Methods: We reviewed of some aspects of biological effects of radiofrequency electromagnetic fields, regulations setting electromagnetic fields exposure limits in different countries and recommended by ICNIRP, and approaches to establishing those limits. Conclusions: We found a significant discrepancy in radiofrequency electromagnetic fields limits adopted in different countries, the legal status and scope of regulatory documents. Differences in the methodology for the development, adoption and approval of electromagnetic fields standard accompanied by differences in their legal status prevent uniform EMF standard setting.
The biodiversity of algae of anthropogenically and technogenically disturbed terrestrial biotopes at the Bellingshausen Station of King George Island has been revealed. Fifty-three species of algae from five divisions were detected. Representatives of the cyanobacteria division dominated in the biotope studied. Almost all species belong to benthic forms, which corresponds well with the nature and origin of the biotopes. Differences in the composition of algocoenoses which developed on ornithogenic, mineral or anthropogenically polluted substrates were noted and characterized. The features of participation of different morphological types of algae in the process of organic mat formation have been emphasized. The biotopes of polar station surroundings were characterized by the dominance of cyanobacteria. Endemic species were not found.
The functioning of the digital economy is accompanied by the intensive development of mobile communication system, the introduction of numerous wireless devices for various purposes that create radio frequency electromagnetic radiation in the human environment. It is important to solve the problems of ensuring electromagnetic safety of the population. The aim of the study is to substantiate the need for a technical and hygienic prognosis of the impact of radio frequency of electromagnetic radiation on the population in the digital economy in order to develop science - based recommendations for the prevention of the negative impact of EMF on the health of the population. The significance of forecasting is considered on the example of the development of a mobile radio communication system. The study included an analysis of the national program "Digital economy of the Russian Federation", "Concepts for creating and developing 5G/IMT-2020 networks in the Russian Federation", and scientific publications ELIBRARY.RU, PubMed Central Internet information platform, EMF-Portal RWTH Aachen University Internet platform, PubMed Central Internet resources and others. The rationale for the need for continuous forecasting of the impact of radio frequency radiation on the population and the structure of the forecast are presented. The article shows the importance of forecasting for the timely development of legal acts, methodological documents, technical and organizational measures to protect the population from the effects of electromagnetic fields and the need for a systematic approach to ensuring the electromagnetic safety of the population. In the context of the development of the digital economy, it is extremely relevant to develop a technical and hygienic forecast of the impact of radio frequency electromagnetic radiation on the population and scientific justification of measures to protect the population from EMF. When forming a forecast, it is necessary to apply a systematic approach to coordinate the entire range of measures to ensure electromagnetic safety of the population. The development of forecasts requires strong interdepartmental and interdisciplinary interaction. Research and scientific development in the field of electromagnetic safety of the population should have state funding. The "electromagnetic security" direction should be included in the national program "Digital economy of the Russian Federation".
Introduction. The Russian telecommunications industry is on the threshold of introducing 5G/IMT-2020 (5G) mobile communications. The expected technological innovations of the new generation standard will lead to an increase in the capacity of mobile operators ‘ networks, data transfer speeds, the emergence of new scenarios for the use of mobile communications and the development of innovative digital services. This will contribute to economic growth by increasing labour productivity, automation and introducing new technologies in various economy and human activity areas. At the same time, the electromagnetic environment (EMO) in the areas where people stay will also change. The purpose of the study is to consider the unique features of the architecture of the 5G network to predict the impact on the population of electromagnetic fields (EMF) of the radio frequency (RF) range. Material and methods. The study is analytical. The information base of the research was Russian strategic documents on the development of 5G technologies, articles published in domestic and foreign journals. Results. The primary input data for the construction of 5G networks are presented, allowing us to evaluate EMO and identify the new technology features that are significant in terms of the impact of RF electromagnetic fields on the population. The 5G network uses previously unused RF bands and new types of antennas. With the introduction of 5G, the density of base stations (BS) and access points will significantly increase, the heights of BS antennas will decrease, and the spatial and temporal characteristics of electromagnetic radiation will change substantially. Conclusion. The architecture of the 5G network differs significantly from the mobile communication standards of previous generations. The introduction of 5G networks will lead to a significant change in the electromagnetic background in the environment. An urgent task is to develop a theory of hygienic regulation of RF EMF for the population in a complex electromagnetic environment with simultaneous operation of 5G networks and previous generations and new approaches to determining the levels of EMF in the environment by computational and instrumental methods.
Introduction. Under the regulations for civil aviation aerodromes, aerodrome territories (AT) are established. The analysis of the literature data shows that when considering the hygienic aspects of the operation of airfields, the authors focus on aviation noise and pollutants in the environment.The purpose of the study: to analyze the design documentation for the establishment of the AT of many civil aviation aerodromes to study the effects of electromagnetic fields of the radio frequency range created by antennas of modern transmitting radio engineering objects (TREO). Materials and methods. We studied regulatory documents on the procedure for establishing and using aerodrome territories, radio engineering support for airfields, technical characteristics and operating modes of modern radio equipment, and regulatory documents for ensuring electromagnetic safety of the population. The analysis of the project documentation for the organization of the aerodrome territory on the electromagnetic effects of seven civil aviation airfields was carried out.Results. The study found the electromagnetic environment in an open area to depend on the power of the radio object, the frequency range, the height of the antenna installation, the radiation pattern in the vertical and horizontal plane, and the combination of two survey radars in one position. Sanitary protection zones and restricted areas for communication and navigation facilities are located within the technical territory of the airfield. Zones of restriction of radar objects fall into the seventh subzone of the AT, established by the noise factor.Conclusion. According to regulatory documents, the justification of the boundaries of the seventh subzone of the AT of civil aviation airfields is established by the factor of noise and electro-magnetic effects, and air pollution. The experience of reviewing the project documentation for the establishment of near-aerodrome territories for electromagnetic effects shows that the zone of restriction of powerful radars can influence the formation of the seventh subzone of the AT. If the restriction zones go beyond the boundaries of the aerodrome land plot, then restrictions on the use of real estate objects and activities are imposed on the territories that fall within the zone.
Introduction. The article presents results of a study on the hygienic evaluation of the impact of levels of electromagnetic fields (EMF) from electrical equipment, communications and navigational aids on modern automated ice-breaking vessels to the electromagnetic safety of the crew. Material and methods. The instrumental measurement of EMF levels from power equipment, electronic equipment, computers, were conducted in places of a permanent and temporary stay of the crew watches in parked icebreakers in the port and during sea trials. The assessment of the levels of electromagnetic radiation from the antennas of radio relay stations (radar) was conducted using the forecasting parameters of the EMF. Results. Onboard computers, marine electrical, communications and radar transmitters do not create electromagnetic fields exceeding the RC in crew workplaces of ship premises. Levels of EMF SHF range generated by RADAR antennas on the open deck, also do not exceed RC. Electromagnetic fields exceeding the RC are registered at work communications transmitters VHF, MF/HF on the decks of the installation of antennas transmitting devices. Discussion. There is a relevant matter of the protection of the crew from the EMF generated by the antennas of modern radars. Evaluation of the EMF RADAR intensity is only possible on the basis of data on forecasting levels of the electromagnetic radiation. To protect the crew from the EMF generated by antennas means the marine radio and RADAR on open decks should implement measures to limit exposure time to install warning signs and placards. Conclusions. There is required the improvement of normative-methodical documents in the field of the protection of the crew from the EMF. You must create a measurement technique for recording the intensity of electromagnetic radiation from the radar. Research data can be used for the development of science-based sanitary-epidemiological requirements for electromagnetic safety of the crew.
Summary. Introduction: Location of weather surveillance radars near settlements, in residential areas and on airport premises makes it important to ensure safe levels of electromagnetic fields (EMF) when operating these radio transmitters. EMF maximum permissible levels for weather radars developed in the 1980s are outdated. Our objective was to analyze modern weather surveillance radars to develop proposals for improvement of radar-generated radiofrequency field monitoring. Materials and methods: We studied trends in meteorological radiolocation and technical characteristics of modern weather radars for atmospheric sensing and weather alerts, analyzed regulations for EMF measurements and hygienic assessment, and measured radiofrequency fields produced by weather radar antennas in open areas and at workplaces of operators. Results: We established that modern types of weather radars used in upper-air sensing systems and storm warning networks differ significantly in terms of technical characteristics and operating modes from previous generations. Developed in the 1980s, current hygienic standards for human exposures to radiofrequency fields from weather radar antennas are obsolete. Conclusions: It is essential to develop an up-to-date regulatory and method document specifying estimation and instrumental monitoring of EMF levels generated by weather radars and measuring instruments for monitoring of pulse-modulated electromagnetic radiation.
The objects of this study are compact fluorescent lamps with an electronic ballast and the hygienic assessment of electromagnetic fields created by compact fluorescent lamps. As part of the work, the selection of samples of compact fluorescent lamps for the experimental study of electromagnetic fields was carried out. The background levels of electric and magnetic fields with a frequency of 50 Hz and high-frequency range were measured. Experimental studies of the spectrum and intensity of electromagnetic fields created by compact fluorescent lamps were carried out with different variants of lamp placement (in a cartridge without a light armature, in a local lighting fixture, in general lighting fixtures – chandeliers). The study showed that compact fluorescent lamps equipped with electronic ballast create electromagnetic fields of radio frequency range in the surrounding space. The main frequency of radiation in the examined lamp samples ranged from 32 to 58 kHz. The intensity of electric fields created by compact fluorescent lamps may exceed the permissible level set for consumer goods.
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