نتایج جستجو برای: electromagnetic radiation

تعداد نتایج: 286933  

Journal: :Bioscience trends 2011
Jinxiang Han Meina Yang Yu Chen

Current studies on biological communications mainly focus on chemical signals. Since organisms are extremely complex, different kinds of signals may exist in the process of cell communication. The most probable candidate for alternative forms of organism communications is electromagnetic radiation, as many experiments have confirmed that electromagnetic radiation widely exists in cells, tissues...

2012
Vernon Cooray Gerald Cooray

Article history: Received 4 February 2011 Received in revised form 1 June 2011 Accepted 2 June 2011 Electron avalanches are the main constituent of electrical discharges in the atmosphere. However, the electromagnetic radiation field generated by a single electron avalanche growing in different field configurations has not yet been evaluated in the literature. In this paper, the electromagnetic...

Journal: :journal of biomedical physics and engineering 0
s a r mortazavi m haghani s zarei n rastegarian n alighanbari m haghparast

mobile phones, mobile phone base stations, cordless phones and power lines are among the main sources of our daily exposures to radiofrequency electromagnetic fields (rf-emf). today, a large proportion of children aged eight and under has used smart phones and tablets for media activities such as playing online games, watching videos or using different applications. over the past several years,...

Journal: :journal of paramedical sciences 0
majid mahdavi department of biology, faculty of natural science, university of tabriz, tabriz, iran. reza yekta department of biology, faculty of natural science, university of tabriz, tabriz, iran. saeed hesami tackallou department of biology, garmsar branch, islamic azad university, tehran, iran.

extremely low frequency (elf) and radio frequency (rf) electromagnetic field may affect biological systems by raising generation free radicals by decline activities of glutathione peroxidase dismutase or increase in the lifetime of free radicals with inhibited pretreatment of cells antioxidant like that alpha tocopherol. elf and  rf electromagnetic  field maycan damaged dna  with raising level ...

2014
Irene Calvente Cristina Dávila-Arias Olga Ocón-Hernández Rocío Pérez-Lobato Rosa Ramos Francisco Artacho-Cordón Nicolás Olea María Isabel Núñez Mariana F. Fernández

OBJECTIVE To characterize the exposure to electric fields and magnetic fields of non-ionizing radiation in the electromagnetic spectrum (15 Hz to 100 kHz) in the dwellings of children from the Spanish Environment and Childhood-"INMA" population-based birth cohort. METHODOLOGY The study sample was drawn from the INMA-Granada cohort. Out of 300 boys participating in the 9-10 year follow-up, 123...

2014
Ying Deng Yuanhui Yu

The electromagnetic waves emitted by computer system at work, and may cause information leakage, will be a serious threat to information security. This paper first analyzed the mechanism of the electromagnetic information leakage based on electromagnetics and antenna theory, for the process of resulting in electromagnetic information leakage, "anti-radiation leakage”,” preventing electromagneti...

Ayoob Rostamzadeh, Daryoush Fatehi, Hiva Mohammadi Bolbanabad, Mohammad Reza Kaffashian,

most popular sources for electromagnetic waves. However, there are many concerns regarding their biological effects on the body, especially the central nervous system. Therefore, the aim of this study was to evaluate the effects of cell phone radiation on histology of the cerebellar granular cells in the neonatal rat. Materials and methods: We selected some Wistar rats. Then, we randomly d...

In the electromagnetic spectrum, structural damage to living tissues per unit of absorbed energy tends to increase with the decrease of a wavelength which is evident not only for ultraviolet and ionizing radiation but also for the infrared and visible light. By causing thermal damage after absorbing energies that would be harmless for radiofrequency electromagnetic fields (EMF), tissues are eve...

F Yousefi M Eghlidospour, SAR Mortazavi SMJ Mortazavi,

Mobile phone use and wireless communication technology have grown explosively over the past decades. This rapid growth has caused widespread global concern about the potential detrimental effects of this technology on human health. Stem cells generate specialized cell types of the tissue in which they reside through normal differentiation pathways. Considering the undeniable importance of stem ...

2015
A. Rafati S. Rahimi A. Talebi A. Soleimani M. Haghani S. M. J. Mortazavi

INTRODUCTION The rapid growth of wireless communication technologies has caused public concerns regarding the biological effects of electromagnetic radiations on human health. Some early reports indicated a wide variety of non-thermal effects of electromagnetic radiation on amphibians such as the alterations of the pattern of muscle extractions. This study is aimed at investigating the effects ...

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