Biological effects of low-intensity radiofrequency fields and risk assessment for biota

2020 ◽  
Vol 60 (9) ◽  
pp. 592-596
Author(s):  
Elena I. Sarapultseva ◽  
Darya V. Uskalova ◽  
Ksenya V. Ustenko
Keyword(s):  
Radio Frequency ◽  
Electromagnetic Radiation ◽  
Electromagnetic Fields ◽  
Negative Impact ◽  
Biological Effects ◽  
High Sensitivity ◽  
Communication Technologies ◽  
Natural Ecosystems ◽  
Low Intensity ◽  
Different Levels

Despite the fact that there are still conflicting opinions about the damage caused by modern wireless communication technologies, most scientists report on the negative biological effects of low-intensity radio frequency electromagnetic radiation at different levels of the organization of live nature. There is no doubt that there is a need not only for a sanitary and hygienic assessment of man-made electromagnetic effects on humans, but also for an environmental assessment for biota. The purpose of the study was to assess the potential environmental risk of electromagnetic impact in the centimeter range on natural ecosystems. The initial data were the authors' own results in the field of radiobiology of non-ionizing radiation, as well as published of other researchers. The article analyzes the biological effects of radio frequency electromagnetic fields detected in organisms of different systematic groups and levels of organization. The data on the non-thermal biological effects of electromagnetic fields indicate a high sensitivity of different species to this factor. The analyzed research results emphasize the need to take into account the features of non-thermal effects of electromagnetic radiation on biota, since these radiations can have a negative impact on different hierarchical levels in natural ecosystems.

scholarly journals Hygienic assessment of the impact of 5G/IMT-2020 communication networks on public health (literature review)

2021 ◽  
Vol 100 (9) ◽  
pp. 929-932
Author(s):  
Anna M. Egorova ◽  
Lydiya A. Lutsenko ◽  
Anna V. Sukhova ◽  
Vyacheslav V. Kolyuka ◽  
Rustam V. Turdyev
Keyword(s):  
Public Health ◽  
Radio Frequency ◽  
Electromagnetic Radiation ◽  
Communication Networks ◽  
Biological Effects ◽  
Three Dimensional ◽  
Cochrane Library ◽  
Pubmed Search ◽  
The Cochrane Library ◽  
The Impact

The program “Digital Economy of the Russian Federation” approved the Concept for the creation and development of 5G / IMT-2020 networks. The development of 5G communications will significantly impact the implementation of many innovative projects and initiatives: the Smart City project, Unmanned Transport, etc. Along with significant technical advantages compared to previous generations of communication (2G, 3G, 4G), 5G technology has completely different emitting characteristics: more emitting elements, signal modulation, three-dimensional beam, the ability to control the beam, SHF (ultra-high) and EHF (extremely high) radio frequency ranges and centimetre and millimetre wavelengths of electromagnetic radiation. Therefore, it is becoming an especially urgent problem to ensure exposure to the human body of non-ionizing electromagnetic fields of the radio frequency range (30 kHz-300 GHz). The authors searched the literature on the biological effects of 5G cellular communications and electromagnetic radiation in the centimetre and millimetre ranges using the appropriate keywords in PubMed search engines, Scopus, Web of Science, Medline, The Cochrane Library, EMBASE, Global Health, CyberLeninka, RSCI and others. There is currently tentative and conflicting evidence on the impact of 5G. The rapidly growing density of wireless devices and antennas (considering future 5G networks) increases the public health risk from exposure to RF EMFs as the penetration depth for 5G EHF radiation is only a few millimetres. At these wavelengths, resonance phenomena are possible at the cellular and molecular levels, particularly concerning stimulating SHF and EHF oxidative processes and damaging DNA. The influence of the millimetre range of RF-EMF is poorly understood; oncological and non-oncological (impact on the reproductive, immune systems, etc.) effects are possible. Using numerical simulation methods of EMF radiation resonances on insects, Thielens A et al., 2018, found a significant overall increase in the absorbed RF power at a frequency of 6 GHz and higher than a frequency below 6 GHz.

scholarly journals Peculiarities of Evaluation of Biological Effects of the Influence of Electromagnetic Radiation in Conditions of Reduced Temperature (Experiment)

2021 ◽  
Vol 6 (2) ◽  
pp. 227-235
Author(s):  
O. Litovchenko ◽  
◽  
I. Perova ◽  
Keyword(s):  
Electromagnetic Radiation ◽  
Negative Impact ◽  
Biological Effects ◽  
The Body ◽  
Combined Effect ◽  
Male Rats ◽  
Control Group ◽  
Prevention Measures ◽  
Immunological Parameters ◽  
Reduced Temperature

In modern conditions there is a high need to improve methods for establishing the nature of the combined influence of factors using modern approaches for further development of prevention measures against the negative impact of factors on the body. The purpose of the study was to investigate the combined effect of electromagnetic radiation and low temperatures with subsequent determination of the level of contribution of each factor in the formation of biological effects within the experiment by mathematical analysis of data using the method of artificial intelligence. Materials and methods. The subchronic experiment (30 days) was performed on male rats. The animals were divided into groups: combined exposure to electromagnetic radiation (70 kHz, 600 V/m) and reduced temperature (40C), isolated exposure to reduced temperature, isolated exposure to electromagnetic radiation and a control group. The establishment of biological effects was performed at stages 5, 15 and 30 days of the experiment. Changes in the body were assessed by physiological, biochemical and immunological parameters of the blood (30 indicators). Data processing was performed using computational intelligence methods (Neuro-fuzzy system). Results and discussion. The combined effect of the factors was manifested by the following biological effects: intensification of peroxidation processes with simultaneous moderate suppression of antioxidant protection, intensification of lipid metabolism was characterized by dyslipoproteinemia, manifesting in: increase in triglycerides, cholesterol and its fractions. Changes of the immune system were decrease in the ability of neutrophils to phagocytosis at different stages of the experiment, imbalance of the activation of the system of reducing the concentration of C4 at the background of increased intensity of IgM and IgG synthesis. The method of determining the intensity of the factors, developed on the basis of factor and cluster analysis, allowed to determine that during the experiment the ratios between the factors changed, but the greatest contribution was made by reduced temperature by both biochemical parameters (63%) and immunological (53%) at the same time, the level of electromagnetic radiation contribution was 37% and 47%, respectively. Thus, the reduced temperature was the leading factor in the combined effect, which added 60% to the overall biological effect throughout the study, against the effect of electromagnetic radiation for which the level of contribution was only 40%. By means of the factor analysis informative indicators, making it possible to establish the characteristics of biological effects, and therefore leading indicators in formation of biological effects were the increase in concentration of DC with simultaneous decrease in concentration of SH-groups, increase in VLDL and suppression of oxygen-dependent metabolism of neutrophil-test. Conclusion. Thus, the tested mathematical approach allowed to determine the leading role of each of the studied factors under the conditions of their combined influence in different systems, which allows to predict probable appropriate reactions of the whole organism and gives a reasonable approach to the development of preventive measures

scholarly journals ELECTROMAGNETIC FIELD INFLUENCES ON HUMAN HEALTH

2019 ◽  
Vol 33 (1) ◽  
pp. 67-70
Author(s):  
Miodrag Šmelcerović
Keyword(s):  
Electromagnetic Radiation ◽  
Human Health ◽  
Electromagnetic Fields ◽  
New Technologies ◽  
Biological Effects ◽  
Epidemiological Studies ◽  
Human Organism ◽  
Portable Communication ◽  
The Impact

The environment we live in is exposed to the increasing and increasing frequency of electromagnetic radiation in our homes and workplaces. In addition to natural radiation from the sun, radiation sources such as high-voltage transmission lines and powerful radar devices are sources of strong electric and magnetic fields. Increasing the number of portable communication and entertainment devices also increase the human body's exposure to additional electromagnetic radiation. This paper describes the most common effects of low-frequency non-ionizing electromagnetic fields (ELFs), which can cause biological changes, sometimes negative for human health. Different methods and approaches are used to investigate the effect of non-ionizing electromagnetic fields on biological systems. In vitro cell culture studies provide important insights into the underlying mechanisms of biological effects of low radiation levels. It is often not possible to deduce the functional response of a human organism to a particular biological effect. In vivo animal and human studies provide more convincing evidence of possible adverse health effects. There is a problem with the extrapolation of the results obtained from animal experiments to humans. Epidemiological studies provide the most direct information on the risk of adverse effects in humans. However, it is difficult to find good control groups that in all aspects (gender, similar life habits, etc.) fit the exposed groups. Care should be taken in interpreting the results of epidemiological studies, especially if low risk is found, as this may be due to other factors. Epidemiological studies are important for monitoring the impact of new technologies on human health [1].

Study of photobiomodulation effects with violet-blue and red light in experimental oncogenesis

2020 ◽  
Vol 60 (9) ◽  
pp. 618-623
Author(s):  
Evgeniya S. Zhukova ◽  
Tatiana G. Shcherbatyuk ◽  
Arseniy L. Potapov ◽  
Irina A. Chernigina ◽  
Vladimir V. Chernov ◽  
...  
Keyword(s):  
Free Radical ◽  
Tumor Growth ◽  
Electromagnetic Radiation ◽  
Electromagnetic Waves ◽  
Biological Effects ◽  
Red Light ◽  
Free Radical Processes ◽  
Low Intensity ◽  
Radical Processes

Introduction. There is still an open question about the limits of medical use of low-intensity electromagnetic radiation of the optical range in tumor growth due to the risk of increased proliferation of tumor cells. The conditions under which the tumor process is stimulated, as well as the mechanisms of photobiomodulation in oncological pathology, remain unclear. The aim of the study - in vitro evaluation and comparison of the effect of low-intensity electromagnetic radiation with wavelengths of 400, 460 and 660 nm on the activity of free-radical processes in tumor tissue and blood in normal and growing experimental neoplasia. Materials and methods. The study was conducted on biological material obtained from white non-linear rats intact and with subcutaneously transplanted cholangiocellular cancer MS-1. The sources of low-intensity radiation with wavelengths of 400, 460 and 660 nm were led generators. The content of hemoglobin, the activity of superoxide dismutase and catalase, changes in the overall level of free radical processes and antioxidant activity by induced chemiluminescence, and DNA damage by the method of DNA comets were studied. Data analysis was performed using nonparametric statistics methods. Results. The multidirectional effect of radiation with wavelengths of 400, 460 and 660 nm on free-radical homeostasis indicators at the early and late stages of tumor growth, as well as the dependence of biological effects on the wavelength of radiation, was found. Conclusions. The results obtained allow making a number of assumptions about the mechanisms of action of the optical electromagnetic waves on tumor growth, modulating free radical processes in the tumor-bearing organism.

scholarly journals Evaluation and Substantiation of the Necessity to Revise Guidelines for Measuring Electromagnetic Radiation of Cellular Base Stations

2020 ◽  
pp. 29-35
Author(s):  
N.V. Zaitseva ◽  
T.S. Ulanova ◽  
A.L. Ponomarev ◽  
O.A Molok ◽  
A.A. Odegov
Keyword(s):  
Radio Frequency ◽  
Electromagnetic Radiation ◽  
Mobile Communications ◽  
Biological Effects ◽  
Current Method ◽  
Base Stations ◽  
Measuring Instruments ◽  
Frequency Range ◽  
Residential Areas ◽  
Negative Effect

Introduction: Measurements of electromagnetic radiation of the radio frequency range are of great relevance due to the increasing number of transmitting radio facilities in the densely populated territories, constant cell site upgrades, and emerging communication standards. The paper presents a brief description of the biological effects of radio frequency electromagnetic radiation and shows basic mechanisms of the negative effect on the most vulnerable organs and systems. Our objective was to evaluate valid guidelines for measuring electromagnetic radiations of the radio frequency range in residential areas, in houses and public buildings. Materials and methods: We reviewed specific characteristics of cellular base and radio relay stations, compared and described electromagnetic radiation measuring devices. The provided recommendations for their selection were based on frequencies at which the communication equipment operates. We also analyzed the current guidelines with account for characteristics of transmitting radio equipment of cellular base stations and the applied measuring instruments. Results: The results of assessing established significant differences are discussed. The analysis of the requirements for measurements demonstrated significant discrepancies and contradictions between the valid documents. The evaluation results demonstrated impossibility of simultaneous measurements of electromagnetic radiation from cellular BS and RRS due to violations of requirements for measurement procedures. We concluded that, according to the current method documents, measurements of electromagnetic radiation from the fourth (4G) and fifth (5G) generation mobile communications systems were not possible. Conclusions: We revealed the necessity to revise the compared guidelines МUК 4.3.1167–02 and МUК 4.3.1677–03, to harmonize regulatory requirements for measurements, and to develop a single document guiding measurements of radio frequency electromagnetic radiation. Recommendations for taking measurements are provided.

METHOD OF SYNTHESIS OF MATHEMATICAL MODELS FOR DISEASES PREDICTING AND DIAGNOSING CAUSED BY ELECTROMAGNETIC FIELDS OF THE RADIO FREQUENCY RANGE

2020 ◽  
pp. 122-128
Author(s):  
Николай Алексеевич Кореневский ◽  
Анна Владимировна Титова
Keyword(s):  
Radio Frequency ◽  
Electromagnetic Fields ◽  
Human Body ◽  
Energy State ◽  
Synthesis Method ◽  
Biologically Active ◽  
Similar Data ◽  
Frequency Range ◽  
Low Intensity ◽  
The Impact

В работе рассматривается метод синтеза математических моделей прогнозирования и диагностики заболеваний, провоцируемых воздействием электромагнитных полей радиочастотного диапазона, позволяющий контролировать текущее состояние человека с целью дальнейшего принятия решений о возможной коррекции функций организма в случае необходимости. С учетом неполного и нечеткого описания исследуемого класса заболеваний в качестве базового математического аппарата выбраны технология мягких вычислений и, в частности, методология синтеза гибридных нечетких решающих правил, хорошо зарекомендовавшая себя при решении задач с аналогичной структурой данных и типом неопределенности. Предлагаемый метод синтеза позволяет учитывать мультипликативный эффект воздействия на организм человека электромагнитных полей (ЭМП) различной модальности и интенсивности с учетом других эндогенных и экзогенных факторов риска. С учетом того, что для достаточно мощных ЭМП радиочастного диапазона определены предельно допустимые уровни с известными последствиями, а для низкоинтенсивных ЭМП указаны лишь тенденции возможных заболеваний в основном на качественном уровне, предлагаются две различные ветви синтеза соответствующих решающих правил. Для мощных и стабильных ЭМП предлагается использовать модификацию известных моделей, полученных для промышленных энергосетей. Для оценки влияния низкоинтенсивных, нестабильных ЭМП радиочастотного диапазона на организм человека предлагается использовать нечеткие табличные модели и ряд чувствительных к действию ЭМП радиочастотного диапазона индикаторов. К таким индикаторам относятся состояние внимания, памяти, мышления, а также динамика изменения энергетического состояния биологически активных точек (БАТ), связанных с исследуемой патологией, и общесистемных БАТ Taking into account the incomplete and fuzzy description of the studied class of diseases, the basic mathematical apparatus was chosen as a soft computing technology, and, in particular, the methodology for the synthesis of hybrid fuzzy solving rules, which has proven itself well in solving problems with a similar data structure and type of uncertainty. The proposed synthesis method allows us to take into account the multiplicative effect of electromagnetic fields (EMF) of different modality and intensity on the human body, taking into account other endogenous and exogenous risk factors. Taking into account that the maximum permissible levels with known consequences are defined for sufficiently powerful EMF of the radio frequency range, and only trends of possible diseases are indicated for low-intensity EMF, two different branches of synthesis of the corresponding decisive rules are proposed at the qualitative level. For powerful and stable EMF, it is proposed to use a modification of known models obtained for industrial power grids. To assess the impact of low-intensity, unstable RF EMF on the human body, it is proposed to use fuzzy tabular models and a number of indicators sensitive to the action of RF EMF. These indicators include the state of attention, memory, thinking, as well as the dynamics of changes in the energy state of biologically active points (BAP) associated with the studied pathology and system-wide BAP

From Electromagnetic Smog to Electromagnetic Chaos. To Evaluating the Hazards of Mobile Communication for Health of the Population

2018 ◽  
pp. 28-33 ◽  
Author(s):  
Ю. Григорьев ◽  
Yu. Grigor'ev
Keyword(s):  
Electromagnetic Radiation ◽  
Mobile Communication ◽  
Mobile Communications ◽  
Negative Impact ◽  
Biological Effects ◽  
Relative Increase ◽  
International Agency ◽  
Positive Trend ◽  
Microwave Range ◽  
Critical System

Over the past 25 years, there has been a global change in the electromagnetic environment on the Earth, associated with the widest use of wireless communications by the population, which significantly changed the situation of artificial electromagnetic pollution of the external environment and the methodology for assessing the health risks of all population groups. In these difficult conditions, nevertheless, many authors in their conclusions neglect the views established in radiobiology in assessing the danger of exposure to electromagnetic radiation of ultrahigh frequencies (EMR microwave), which is associated, for example, with the notions of a critical organ or critical system, the possibility of accumulating adverse effects and the formation of residual damage (long-term consequences). Almost daily brain irradiation of the EMR of the microwave does not attract their attention. The work uses classical radiobiological approaches to assess the danger of electromagnetic radiation in the microwave range of low non-thermal intensities, including mobile communication for the population and presents some data on the negative impact on public health, including children – mobile phone users. On specific examples, the facts of the relative increase in the risk of developing brain tumors after a long period of active use of cell phones are considered. In many countries, there is a complete disregard for the precautionary principle proposed by the WHO. Children for the first time in the entire period of civilization are included in the risk group. At the same time, in many countries there is a complete disregard for this principle and the recommendations of the International Agency for Research on Cancer (IARC) are ignored. Even before the era of the development of mobile communications, there were significant differences in the approaches to developing acceptable doses for microwave EMR, but discussions on the possible adverse biological effects of non-thermal low levels of these emissions are still ongoing. At the same time, we can note a positive trend associated with the fact that almost all the leading countries of Europe are already correctly assessing the real danger of the MP and have their own more stringent regulations than in Russia (Austria, France, Italy etc.). At the same time, we observe the silence of some scientists and important officials in many countries about the possible danger to the population of EMP mobile communications. As a fact, opposite decisions are made about the prevention and protection of the population, including children. At present, the current situation can be described as electromagnetic chaos in the habitat of the population. In our opinion, in the conditions of the existing electromagnetic chaos, it is necessary to inform the population that mobile communication in the absence of self-limitation can be dangerous to health. The population should have an independent choice of the type and the mode of mobile communication. This choice is his voluntary risk.

A radio-frequency system forin vivopilot experiments aimed at the studies on biological effects of electromagnetic fields

2005 ◽  
Vol 50 (15) ◽  
pp. 3643-3654 ◽  
Author(s):  
Lucia Ardoino ◽  
Vanni Lopresto ◽  
Sergio Mancini ◽  
Carmela Marino ◽  
Rosanna Pinto ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Electromagnetic Fields ◽  
Biological Effects

scholarly journals Nanotechnologies in crop cultivation: Ecotoxicological aspects

2019 ◽  
Vol 27 (2) ◽  
pp. 148-155 ◽  
Author(s):  
N. A. Makarenko ◽  
V. V. Makarenko
Keyword(s):  
Negative Impact ◽  
Chemical Properties ◽  
Aquatic Organisms ◽  
High Sensitivity ◽  
Active Surface ◽  
Negative Influence ◽  
Agricultural Practice ◽  
Natural Ecosystems ◽  
Crop Cultivation ◽  
High Level

The European Commission has recognized nanotechnologies as extremely promising for increasing competitiveness of different sectors of the economy. On account of climate changes and the quest for food security, they are an effective way of solving key problems in the agrarian sector. Nowadays nanotechnologies are widely used for creating nanofertilizers, nanoinsecticides, nanofungicides, nanoherbicides and other nanopreparations. Numerous researches affirm advantages of nanopreparations, which has helped them find a wide use in agricultural practice. At the same time, nanopreparations are the source of entry into the environment of nanoparticles (size less than 100 nm) which are characterized by large active surface and specific physical-chemical properties different from ordinary chemical substances. It is precisely this which determines their bioaccessibility, bioaccumulation and toxicity. Recently, data about toxicity of nanoparticles for human and natural ecosystems have been accumulated. The results of a great deal of research affirm that they break the processes of photosynthesis, transpiration, mitosis, miosis and have a negative influence on colouring agents, proteins and carbohydrates. Under their action, physiological processes of plant growth and development are disturbed, which take place mainly in root system. Nanoparticles are characterized by high bioaccessibility for soil organisms, they are toxic to earthworms and microorganisms and they influence circulation of carbon and nitrogen. Aquatic organisms have been shown to have high sensitivity to nanoparticles; toxic effect has been registered for fish, daphnids, water plants and microorganisms. Taking into consideration the high level of potential danger of nanopreparations used in crop cultivation, special notice should be paid to the development of eco toxicological research. At present, nanoecotoxicological approaches to assessment of the danger of nanomaterials and nanoparticles are absent. Development of reports on elaboration of quantitative and qualitative methods of analysis, and methods of modeling and prognostication of risks is only at the initial stage. The objective of this review is attracting attention to solving the problem of nanoecotoxicology, nanoagrochemicals and nanopesticides, which needs consolidated efforts of scientists, governmental organizations and business and is an obligatory condition for preventing the negative impact of nanomaterials on humans and the environment.

Sign in / Sign up

Export Citation Format

Share Document