Background: The paper describes the current legal status related to electromagnetic field (EMF) measurements in the context of environmental protection. It also presents the assumptions and exemplary results obtained from the EMF National Monitoring System which, in the authors' opinion, could be more reliable and better adapted to the current state of affairs in the radiocommunication industry.
Material And Methods: A simplified method of estimating electromagnetic field intensity from various sources, including in particular cellular base stations, using their basic parameters, was described. The electromagnetic field monitoring system operating in Poland was described, and alternative monitoring methods were presented. The authors introduced their own concept of mobile monitoring, whose assumptions perfectly fit into the current realities and can be performed with the use of the current measurement equipment available to laboratories of the Voivodeship Inspectorates for Environmental Protection.
Results: The construction of the measurement system was presented, and its measurement verification was carried out. Measurement errors resulting from the use of weather-resistant casing and from placing the device on the roof of the vehicle were estimated, confirming that their impact on the measurement uncertainty budget tends to be negligible. Auxiliary software for mobile monitoring was presented, with the aid of which verification was made by carrying out monitoring measurements in the city of Wrocław.
Conclusions: The results obtained during the monitoring measurements in real conditions confirmed that the proposed method provides reliable results, which are not burdened with significant errors and distortions resulting from the proposed measurement methodology or from the construction of the measurement system itself. The developed system does not require significant financial outlays and is a perfect complement to the stationary measurements currently performed within the Environmental Monitoring System. Med Pr. 2019;70(5):567-85.
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http://dx.doi.org/10.13075/mp.5893.00840 | DOI Listing |
ACS Appl Mater Interfaces
January 2025
Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang 110819, China.
A carbon nanotube (CNT) composite is an effective method to improve the thermoelectricity of materials. However, the depletion layer between the CNT and thermoelectric (TE) material always decreases the contribution of CNT to the conductivity of the TE material. It is important to eliminate the depletion layer for improving the TE properties.
View Article and Find Full Text PDFSci Rep
January 2025
School of Electrical Engineering, University of Tehran, Tehran, 14179-35840, Iran.
This paper introduces an analytical method for studying power transmission through an infinite array of helical-shaped metal particles in a lossy dielectric medium. While the assessment of composite slabs' transmitted power has been extensively researched in the electromagnetic interference (EMI) shielding field, many studies lack an adequate problem description. The primary inadequacy of these studies is the need for an analytical framework.
View Article and Find Full Text PDFSci Total Environ
January 2025
Zhejiang Key Laboratory of Geriatrics and Geriatrics Institute of Zhejiang Province, Zhejiang Hospital, 310030, Hangzhou, China. Electronic address:
Thanks to the progress of science and technology, human life expectancy has dramatically increased in the past few decades, but accompanied by rapid ageing of population, resulting in increased burden on society. At the same time, the living environment, especially the electromagnetic environment, has also greatly changed due to science and technology advances. The effect of artificial electromagnetic fields (EMFs) emitted from power lines, mobile phones, wireless equipment, and other devices on ageing and ageing-related diseases are receiving increasing attention.
View Article and Find Full Text PDFThe extreme electromagnetic near-field environment of nanoplasmonic resonators and metamaterials can give rise to unprecedented electromagnetic heating effects, enabling large and manipulable temperature gradients on the order of 10-10 K/nm. In this Letter, by interfacing traditional semiconductor quantum dots with industry-grade plasmonic transducer technology, we demonstrate that the near-field-induced thermal gradient can facilitate the requisite population inversion for coherent phonon amplification and lasing at the nanoscale. Our detailed analysis uncovers both the characteristics and parameter sensitivity of inversion and relaxation oscillations in the system, thereby unveiling hitherto unexplored opportunities for leveraging plasmonic near-field effects in the context of quantum thermodynamics and phononics.
View Article and Find Full Text PDFACS Appl Mater Interfaces
January 2025
Terahertz Research Center, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China.
Low-dimensional materials (LDMs) with unique electromagnetic properties and diverse local phenomena have garnered significant interest, particularly for their low-energy responses within the terahertz (THz) range. Achieving deep subwavelength resolution, THz nanoscopy offers a promising route to investigate LDMs at the nanoscale. Steady-state THz nanoscopy has been demonstrated as a powerful tool for investigating light-matter interactions across boundaries and interfaces, enabling insights into physical phenomena such as localized collective oscillations, quantum confinement of quasiparticles, and metal-to-insulator phase transitions (MITs).
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