Table 3 - uploaded by Ibraheem Fayed
Content may be subject to copyright.
![Measured EMFs near some household/office Appliances/electronic devices [4]](profile/Ibraheem-Fayed/publication/283510721/figure/tbl1/AS:669232337543173@1536568831256/Measured-EMFs-near-some-household-office-Appliances-electronic-devices-4.png)
Source publication
![Figure 1. The electromagnetic spectrum [1]](profile/Ibraheem-Fayed/publication/283510721/figure/fig1/AS:292764400013328@1446811880777/The-electromagnetic-spectrum-1_Q320.jpg)
Wireless mobile communication networks have become essential for human life. A great booming and huge investments are devoted to develop the services without taking into considerations the health effect of electromagnetic radiations of the base stations concerning with these services. Base stations for wireless mobile communication have brought Ele...
Context in source publication
Context 1
... [6], a comparative study of of Human Exposure to Electromagnetic Radiation from Wireless Devices (DECT, WLAN and Bluetooth, as well as wireless communication devices based on proprietary standards in the frequency range of 30 MHz to 6 GHz in Home and Office Environments had done. Table (3) shows an overview of the tested device classes and the results of the dosimetric and far-field exposure assessments for [6] . Only the maximum values of each device class are shown. ...
Similar publications
This paper presents an analytical method for modelling the no-load air gap flux density of a surface-mounted and a consequent-pole linear Vernier hybrid machine (LVHM). The approach is based on simple magneto-motive force (MMF) and permeance functions to account for the doubly-slotted air gap of the LVHM. These models are used to determine the flux...
This paper explores the rotor core and pole double-rotor hydro generator for micro hydropower plants. To assemble the rotor core double-rotor hydro generator used forged multifaceted steel sheets thickness of 1-2 mm without insulation coating, where the number of faces of the core will match to the number of poles double-rotor hydro generator. Inve...
Temperature and the electric potential distributions in anisotropic thermoelements situated on substrates with different thermal properties are calculated. The influence of the geometric dimensions and thermophysical properties of the thermoelement and the substrate material to the electrical signal of the sensor is investigated. It is shown that a...
This paper investigated a 12-slot/11-pole flux switching permanent magnet (FSPM) machine used for electric vehicles (EVs). Five novel rotor teeth shapes are proposed and researched to reduce the cogging torque and torque ripple of the FSPM machine. These rotor teeth shapes are notched teeth, stepped teeth, eccentric teeth, combination of notched an...
The work presented describes the modeling of a measurement bench in the presence of an implantable single-chamber pacemaker in vitro subjected to a conducted disturbance. The source of disturbance is a sinusoidal electrical signal with amplitude of 10 V; the frequency ranges studied correspond to the frequencies of the electrical distribution netwo...
Citations
... Also, the NAB has specified the maximum usable signal strength within these areas. These signal specifications provide a dynamic range of signal levels i.e. to avoid excessive radiation that cause adverse effects [7][8][9][10][11], but strong enough to provide good signal reception [12]. These signal strength specifications, however, are the signals outside and not inside the buildings. ...
This paper proposes for the development of a path-loss model to improve the accuracy in predicting the signal level in office locations for the reception of FM broadcast. Identifying the factors that affect the signal level and eventually developing a model to predict the signal inside buildings will guide engineers in designing a broadcast system. A properly designed broadcast system will ensure optimum signal penetration in these listening areas. Further, the developed model can find applications in policy-making on the regulation of FM broadcast stations, both for analog and digital radio systems. Signal level measurements from three FM broadcast stations have been made inside eight office rooms in De La Salle University-Manila. With the three stations utilizing circularly polarized transmitting antennas, the measurements aim to determine the signal levels of the horizontal and vertical components of the received signal. These measured levels are used to determine the effects on the magnitude of the received signal of some factors, such as signal frequency and polarization, receiving antenna height, walls, transmitter-receiver distance, etc. Since the developed model is based on the measured signal levels in the actual office environment, its accuracy is then better than any of the existing models earlier developed.
... МПД от мобильного устройства должна быть ограничена 2 Вт / кг в массе 10 г -для головы и торса, 4 Вт / кг -для конечностей и 0,08 Вт / кг -для всего тела. Показатели рассчитаны с учетом средней продолжительности воздействия 6 мин [7]. Федеральная комиссия по связи (Federal Communications Commission) США установила предельную МПД от сотовых телефонов на уровне 1,6 Вт / кг [8]. ...
... Согласно исследованиям Всемирной организации здравоохранения (ВОЗ), такое электромагнитное воздействие вызывает симптомы гиперчувствительности: болезненность кожи и нервов [3], снижение зрения, одышку, несбалансированное сердцебиение, проблемы с вниманием и памятью, головные боли, усталость и тошноту, боль в конечностях, скованность мышц, ощущение жжения и др. [7,9,14]. В соответствии с нормами, установленными в законе о безопасности Министерства окружающей среды, горной добычи и пространственного планирования Республики Сербия [10], предельный уровень безопасности магнитного излучения ЭМП частотой f до 800 Гц пропорционален 2 / f. ...
... 2015. № 9. С. 132-136.Таблица 3. Измерение ЭМП вблизи некоторых бытовых / офисных приборов / электронных устройств[7] ...
... The downward radiation from the minor lobes can produce RF energy that leads to blanketing in FM receivers and expose the environment to excessive RF field around the vicinity of the tower [7][8][9][10][11][12]. Blanketing is a condition when there is excessive RF signal enough to overload the front-end of radio receivers making the demodulaton of the transmitted information difficult. ...
... Secondly, the approach proposed in this research, a direct measurement of RF radiation exposure from the base tower at any concerned location is recorded through the appropriate instrument, as shown in Figure 4. The nearest distance for the base station and the receiver follows International Telecommunication Union (ITU) recommendation which is explained in [11,12]. ...
The residence of Pulau Pinang and Malaysia generally are worried with the possible health effects due to Base Tower Station (BTS) radiation. Particularly, the residents of Pulau Pinang are utilizing their mobile phones for multiple kind of tasks including communications, browsing the internet and other applications. With the recent advances in mobile communication technologies, the end user demanded a better coverage, great communication services, and faster speed for internet browsing. To fulfill the demand, service provider and communication companies are providing plenty of communication base tower leading to the beliefs of that the tower emitted radiation and cause harmful effect to human health and voiced out and complain to the municipal councils in Malaysia. In this paper, a measurement was conducted to study electromagnetic fields (EMF) radiation level in Pulau Pinang. The measurement is compared with the international standard provided by International Commission of Non-Ionizing Radiation Protection (ICNIRP). Far field measurement of different values of long term evolution (LTE) exposure was demonstrated in radiofrequency (RF) shielded environment. LTE850, LTE1800 and LTE2600 field exposure was compared in term of its’ electrical field and power density that adhere to the standard provided by ICNIRP
... Secondly, the approach proposed in this research, a direct measurement of RF radiation exposure from the base tower at any concerned location is recorded through the appropriate instrument, as shown in Figure 4. The nearest distance for the base station and the receiver follows International Telecommunication Union (ITU) recommendation which is explained in [11,12]. ...
The residence of Pulau Pinang and Malaysia generally are worried with the possible health effects due to Base Tower Station (BTS) radiation. Particularly, the residents of Pulau Pinang are utilizing their mobile phones for multiple kind of tasks including communications, browsing the internet and other applications. With the recent advances in mobile communication technologies, the end user demanded a better coverage, great communication services, and faster speed for internet browsing. To fulfill the demand, service provider and communication companies are providing plenty of communication base tower leading to the beliefs of that the tower emitted radiation and cause harmful effect to human health and voiced out and complain to the municipal councils in Malaysia. In this paper, a measurement was conducted to study electromagnetic fields (EMF) radiation level in Pulau Pinang. The measurement is compared with the international standard provided by International Commission of Non-Ionizing Radiation Protection (ICNIRP). Far field measurement of different values of long term evolution (LTE) exposure was demonstrated in radiofrequency (RF) shielded environment. LTE850, LTE1800 and LTE2600 field exposure was compared in term of its’ electrical field and power density that adhere to the standard provided by ICNIRP.
... Electromagnetic field is created by moving electric charges, microwaves, radio waves, electrical currents, and transformers. The low-frequency electromagnetic radiation prevailing mostly in indoors (due to electrical appliances, computers, wireless devices, etc.) can have detrimental effect on human health, and there are international regulations to deal with this problem (e.g., International Radiation Protection Association (IRPA)) [26]. Most of the regulations agree that exposure to electromagnetic field beyond the safe range of 0-300 Hz is harmful for the human body [27]. ...
... Most of the regulations agree that exposure to electromagnetic field beyond the safe range of 0-300 Hz is harmful for the human body [27]. The possibility of health hazards such as acute lymphoblastic leukemia in children due to electromagnetic field exposure was well established decades ago [28] and continues to be a significant topic of research [26,[29][30][31]]. ...
... The results are from two Reflex laboratories, later confirmed by two more laboratories [1][2][3][4][5][6][7]. The aim of the project is to find a solution for the construction of a built-in transformer substation with minimal impact on human and the environment in terms of wave emissions. ...
Ensuring a safe and environmentally friendly living environment requires the use of modern technological and engineering solutions to design and build high-risk facilities. Dangers to human health include the different electromagnetic fields emanating from power and communication devices. The aim of the project is to find a solution for the construction of a built-in transformer substation with minimal impact on human and the environment in terms of wave emissions.
The purpose. An investigation of the shielding effectiveness against electromagnetic radiation (EMR) by woven fabrics that are presented on the Ukrainian interior textile market. Methodology. Theoretical and experimental research is based on the general principles of textile materials science. The shielding effectiveness to EMR of textile fabrics was tested and measured using EM-2107A (Electro Metrics) in accordance with ASTM 4935-10 in the frequency range 30 MHz – 1.5 GHz. Results. Flexible screens based on textile materials are widely used for EMR shielding. The shielding effectiveness against EMR by textile materials can be improved with fabric modifying by metal fibers/threads, metal particles or conductive polymers at various stages of textile production. It possible to substantiate the expediency of using metal-containing textile materials as interior textiles on the result of carried out analysis of the modern assortment of interior textiles and the experimental studies. Studies results have shown that the proposed fabrics have a high shielding ability by the classification "professional use" according to FTTS-FA-003 Specified Requirements of Electromagnetic Shielding Textiles, the shielding efficiency of which is within 30 ÷ 60 dB. Scientific novelty. The expediency of using modern metal-containing textile materials as interior textiles for windows decoration has been substantiated. The studied textile materials make it possible to clarify a new promising segment of the interior textile market - windows decoration. The main goal of such textile - the decoration of the residential and administrative buildings is expanded and supplemented by the function of electromagnetic radiation shielding. Practical significance. The complex of scientific research on the shielding effectiveness against EMR allowed offering a new range of interior textile materials for window decoration.
This paper presents the results of interlaboratory testing for broadband measurement of the high-frequency electric field strength, with the aim of confirming the technical competence of participating laboratories. The purpose of this paper is to provide the initial measuring framework for future consideration and improvement of interlaboratory testing methods. The presented metrological framework can have its practical application in other areas related to the testing of non-ionizing radiation levels that people are exposed to in environment.
Key words: human exposure, non-ionizing radiation, electric field strength, high frequency, interlaboratory testing
