Electromagnetic fields at work places experts of the cellular companies

10.12737/5019 ◽  
2014 ◽  
Vol 8 (1) ◽  
pp. 1-4
Author(s):  
Горохов ◽  
E. Gorokhov ◽  
Ляпкало ◽  
A. Lyapkalo
Keyword(s):  
Magnetic Fields ◽  
Electromagnetic Radiation ◽  
Electromagnetic Fields ◽  
Electric Fields ◽  
Working Conditions ◽  
Base Stations ◽  
Frequency Range ◽  
Magnetic Components ◽  
Electronic Computers ◽  
The Impact

The paper presents the results of instrumental studies by means of hygienic assessment of levels of electromagnetic fields (EMF) on the workplaces in cellular companies. Measurements of EFM were made on workplaces of 2 groups of employees during the studies: office administrative specialists and technical employees. Instrumental measurements of EMF levels were made by Personal Electronic Computers (PCs) and receivingtransmitting equipment of base cellular stations (BCS). Measurements of EMF from the PC´s screens based on electric and magnetic components were performed: a tension of electric fields with a frequency range of 5Hz-2 kHz and 2 kHz-4 kHz; a tension of magnetic fields in the frequency range of 5Hz-2 kHz and 2 kHz-4 kHz. Measurements of flux density of electromagnetic energy were performed at operating platforms of base stations and at control operating equipment rooms of cellular stations. There were about 150 workplaces of office administrative specialists with PCs surveyed and more 500 workplaces of technical specialists. The activities of administrations of cellular companies were estimated to ensure the safety of working conditions of employees under the influence of electromagnetic radiation (EMR). Literature data on the impact of EMR on human health and health of employees were presented.

MEASURING ACTIVE FERRITE ANTENNA AFA-1M

2020 ◽  
Author(s):  
Ю.А. Никитин ◽  
С.А. Белов ◽  
С.Ю. Чернявский
Keyword(s):  
Magnetic Fields ◽  
Electromagnetic Radiation ◽  
Electromagnetic Fields ◽  
Frequency Range ◽  
Measuring Systems ◽  
Independent Product

В статье описана малогабаритная широкополосная активная ферритовая антенна АФА-1М для измерений магнитных полей в диапазоне частот от 10 Гц до 300 кГц. Антенна может быть использована как самостоятельное изделие, так и в составе автоматизированных измерительных комплексов для измерения электромагнитных полей помех, а также для проверки системы защиты информации от непреднамеренной утечки за счет побочных электромагнитных излучений. The article describes the small-sized broadband active ferrite antenna AFA-1M for measuring magnetic fields in the frequency range from 10 Hz to 300 kHz. The antenna can be used as an independent product and as a part of automated measuring systems for measuring electromagnetic fields of interference, as well as to verify the protection of information from unintentional leakage due to spurious electromagnetic radiation.

scholarly journals ANALISIS HUBUNGAN SALURAN TEGANGAN TINGGI LISTRIK TERHADAP JARINGAN SELULAR DI DAERAH GRAHA INDAH TAMBAKBOYO LAMONGAN

JOUTICA ◽  
2019 ◽  
Vol 4 (2) ◽  
pp. 255
Author(s):  
Kemal Farouq Mauladi ◽  
Nurul Fuad
Keyword(s):  
Public Health ◽  
Magnetic Fields ◽  
Electric Field ◽  
Cellular Networks ◽  
Electromagnetic Fields ◽  
Electricity Generation ◽  
Negative Impact ◽  
Electrical Energy ◽  
Electric And Magnetic Fields ◽  
The Impact

Telecommunications technology is developing very rapidly, ranging from users or engineers. The development of smartphone smartphones is also increasingly in demand, so that the use of electricity needs is also increasing. The need for electricity usage has resulted in more standing voltage in some settlements. The establishment of sutet will have a negative impact on public health. In addition, the influence of electrical energy on humans occurs because the electrical energy generated by electricity generation or electricity that is channeled gives rise to electromagnetic fields. The higher the voltage required by an equipment, the greater the electric field that is distributed. Besides that, it can also find ways to reduce the negative impact of the electric and magnetic fields produced by SUTET which impacts the process of the occurrence of electric and magnetic fields on SUTET. From the problems above, the author intends to determine the effect or correlation between the impact of SUTET on cellphone network transmissions or channels. This research can later determine the negative impact caused by SUTET for the surrounding community, and the impact of SUTET radiation on cellular networks.

Equivalent Path and Absorption for Electromagnetic Radiation in the Solar Corona

1950 ◽  
Vol 3 (3) ◽  
pp. 376 ◽  
Author(s):  
JC Jaeger ◽  
KC Westfold
Keyword(s):  
Magnetic Fields ◽  
Solar Corona ◽  
Electromagnetic Radiation ◽  
Spherical Symmetry ◽  
Solar Disk ◽  
Frequency Range ◽  
Echo Signal

Calculations of the trajectories, equivalent path, and absorption of rays, in the frequency range 20-100 Mc/s., in the solar corona have been made, neglecting possible magnetic fields and assuming spherical symmetry. Interpreting the double-humped burst of solar noise as the superposition of a direct and an echo signal, inferences are made as to the height in the corona and location on the solar disk of its source.

scholarly journals COMPACT FLUORESCENT LAMPS AS SOURCES OF ELECTROMAGNETIC FIELDS OF RADIO- FREQUENCY RANGE (EXPERIMENTAL STUDY)

2019 ◽  
pp. 59-62
Author(s):  
V.N. Nikitina ◽  
G.G. Lyashko ◽  
N.I. Kalinina ◽  
E.N. Pankina
Keyword(s):  
Experimental Study ◽  
Radio Frequency ◽  
Electromagnetic Fields ◽  
Electric Fields ◽  
Experimental Studies ◽  
Frequency Range ◽  
Electronic Ballast ◽  
Fluorescent Lamps ◽  
Compact Fluorescent Lamps ◽  
Surrounding Space

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.

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].

scholarly journals Numerical Calculation of Electric Fields in Housing Spaces Due to Electromagnetic Radiation from Antennas for Mobile Communication

10.14311/478 ◽  
2003 ◽  
Vol 43 (5) ◽  
Author(s):  
H.-P. Geromiller ◽  
A. Farschtschi
Keyword(s):  
Electromagnetic Wave ◽  
Electric Field ◽  
Electromagnetic Radiation ◽  
Electric Fields ◽  
Mobile Communication ◽  
Signal Frequency ◽  
High Signal ◽  
Maximum Value ◽  
Mobile Antennas ◽  
The Impact

The influence of electromagnetic radiation from mobile antennas on humans is under discussion in va'rious groups ofscientists, This paper deals with the impact ofelectromagnetic radiation in a housing space. The space is assumedto be bordered by 5 walls of ferroconcrete and a door-window combination on the 6th side, the latter to be electromagnetically transparent. The transparent side of the housing is exposed to an electromagnetic wave. As the source ofradiation is considered to be far away from the housing, the radiation is regarded to be from a plane wave. Due to the high signal frequency and ferroconcrete walls, 5 sides ofthe housing space are considered to be perfect conductors. The electric field inside the housing is calculated numerically by the method of finite differences for different angles of incidence of the radiated electromagnetic wave. The maximum value of the calculated electric field is outlined in a diagram.

scholarly journals Anisotropic cosmological solutions to the Y(R)F2 gravity

2019 ◽  
Vol 34 (35) ◽  
pp. 1950286 ◽  
Author(s):  
Özcan Sert ◽  
Muzaffer Adak
Keyword(s):  
Variational Principle ◽  
Magnetic Fields ◽  
Electromagnetic Fields ◽  
Electric Fields ◽  
Isotropic Case ◽  
Field Equations ◽  
Cosmological Solutions

We investigate anisotropic cosmological solutions of the theory with non-minimal couplings between electromagnetic fields and gravity in [Formula: see text] form. After we derive the field equations by the variational principle, we look for spatially flat cosmological solutions with magnetic fields or electric fields. Then, we give exact anisotropic solutions by assuming the hyperbolic expansion functions. We observe that the solutions approach the isotropic case in late-times.

scholarly journals Low-frequency range magnetic fields at workplaces: hygiene regulation criteria

2021 ◽  
Vol 100 (5) ◽  
pp. 436-443
Author(s):  
Yury P. Paltsev ◽  
Larisa V. Pokhodzey ◽  
Yury V. Kurilenko ◽  
Elena A. Rudneva
Keyword(s):  
Magnetic Fields ◽  
Russian Federation ◽  
Low Frequency ◽  
Frequency Range ◽  
Limit Values ◽  
Frequency Bands ◽  
Target Values ◽  
Scientific Substantiation ◽  
The Russian Federation ◽  
The Impact

Introduction. Until now, in the Russian Federation, unlike Western countries, hygienic regulations have not been developed for magnetic fields (MF) of low-frequency ranges. The aim of the study is a scientific substantiation of the threshold limit values (TLV) of magnetic fields in the range of 3 Hz - 30 kHz at workplaces. Materials and methods. A comparative analysis of domestic and foreign hygienic normative-methodical documentation regulating the TLV of magnetic fields of low-frequency ranges at workplaces is carried out. When substantiating TLV in the frequency range of 3 Hz - 30 kHz, the method of calculating the corrected value of the RMS MF strength in decadal frequency bands is used, taking into account its target values for different exposure times. Results. MF sources in the frequency range 3 Hz - 30 kHz were shown to be widely used in various areas of activity. The analysis of current domestic and foreign documents regulating the impact of MF in low-frequency bands showed the possibility of harmonizing hygienic regulations. The TLV MP in decadal frequency bands and the criteria for their hygienic assessment are scientifically substantiated. Conclusion. The studies made it possible for the first time in the Russian Federation to develop MF hygienic standards in the frequency range of 3Hz - 30 kHz at workplaces, the introduction of which into the practice of sanitary and epidemiological supervision will ensure adequate control over the electromagnetic environment and preservation of workers’ health.

scholarly journals Effects of Electromagnetic Fields and their Shielding on the Quality of Carrot (Daucus Carota L.) Seeds

2019 ◽  
Vol 26 (4) ◽  
pp. 785-795
Author(s):  
Romuald Górski ◽  
Hanna Dorna ◽  
Agnieszka Rosińska ◽  
Dorota Szopińska ◽  
Stanisław Wosiński
Keyword(s):  
Seed Germination ◽  
Electromagnetic Radiation ◽  
Electromagnetic Fields ◽  
Electric Fields ◽  
Seed Quality ◽  
Seed Vigour ◽  
Daucus Carota L ◽  
Carrot Seed ◽  
Electrical Component ◽  
High Dielectric

Abstract The aim of the study was to determine the effect of electromagnetic fields and their shielding on carrot seed quality. Three sectors were separated on the device emitting electromagnetic fields: “E” - sector emitting electromagnetic radiation with the predominance of the electrical component, “EM” - sector emitting electromagnetic radiation without domination of its components and “M” - sector with a predominance of magnetic component. Fields generated by the device were also shielded with ADR TEX screen, based on a nanocomposite in which the electric component of the electromagnetic radiation is absorbed by water dispersed in a dielectric matrix in various ways. The composites exhibit high dielectric absorption and shield electric fields within the frequency range from ~100 mHz to ~100 kHz. Seed germination and vigour were evaluated at 20 °C in darkness. Mycological analysis was performed using a deep-freeze blotter test. Exposure of seeds to radiation with the predominance of the electrical component and electromagnetic radiation without domination of its components combined with shielding of electromagnetic fields with ADR TEX (E+ADR TEX and EM+ADR TEX) increased seed germination energy and germination capacity compared to these treatments without shielding and control. The percentage of abnormal diseased seedlings in treatments with shielding of electromagnetic fields with ADR TEX (E+ADR TEX, EM+ADR TEX and M+ADR TEX) was significantly lower than in the treatments without shielding and in control. None of the treatments affected seed vigour. Generally, exposure of seeds to electromagnetic radiation did not influence the incidence of fungi.

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.

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