نتایج جستجو برای: rf radiation

تعداد نتایج: 269852  

A R Mehdizadeh Gh Mortazavi, S A R Mortazavi,

A large body of evidence now indicates that the amount of mercury released from dental amalgam fillings can be significantly accelerated by exposure to radiofrequency electromagnetic fields (RF-EMFs) such as common mobile phones and magnetic resonance imaging (MRI). Studies performed on the increased microleakage of dental amalgam restorations after exposure to RF-EMFs have further supported th...

F Zal M A Mosleh-Shirazi M Daneshmand R Zare S M J Mortazavi, Z Mostafavi-Pour

Background: Over the past few years, the rapid use of high frequency electromagnetic fields like mobile phones has raised global concerns about the negative health effects of its use. Adaptive response is the ability of a cell or tissue to better resist stress damage by prior exposure to a lesser amount of stress. This study aimed to assess whether radiofrequency radiation can induce adaptive r...

Journal: :journal of biomedical physics and engineering 0
smj mortazavi s rahimi a talebi a soleimani a rafati

introduction : the  rapid development  of wireless telecommunication technologies  over the past decades, has led to significant changes in the exposure of the general public to electromagnetic fi elds. nowadays, people are continuously exposed to different sources of electromagnetic fi elds such as mobile phones, mobile base stations, cordless phones, wi-fi routers, and power lines. therefore,...

Journal: :journal of biomedical physics and engineering 0
e kazemi smj mortazavi 1. medical physics department, school of medicine, shiraz university of medical sciences, shiraz, iran a ali-ghanbari s sharifzadeh r ranjbaran z mostafavi-pour

background , despite numerous studies over a decade, it still remains controversial about the biological effects of rf emf emitted by mobile phone telephony. objective , here we investigated the effect of 900 mhz gsm on the induction of oxidative stress and the level of intracellular reactive oxygen species (ros) in human mononuclear cells, monocytes and lymphocytes as defence system cells. met...

Journal: :journal of biomedical physics and engineering 0
a rafati s rahimi a talebi a soleimani m haghani s m j mortazavi

introduction : the fast-growing telecommunication and wireless technologies has led to more dependence to these communication devices and higher levels of exposure to electromagnetic radiations propagated by cellular devices and their service towers. to disable signaling in places where silence is valued or where information quarantine measures are required, mobile phone jammers emit radiofrequ...

Journal: :Brain research 2010
Shangcheng Xu Zhou Zhou Lei Zhang Zhengping Yu Wei Zhang Yuan Wang Xubu Wang Maoquan Li Yang Chen Chunhai Chen Mindi He Guangbin Zhang Min Zhong

Increasing evidence indicates that oxidative stress may be involved in the adverse effects of radiofrequency (RF) radiation on the brain. Because mitochondrial DNA (mtDNA) defects are closely associated with various nervous system diseases and mtDNA is particularly susceptible to oxidative stress, the purpose of this study was to determine whether radiofrequency radiation can cause oxidative da...

Journal: :The Science of the total environment 2013
Stanislaw Szmigielski

Radiofrequency (RF) and microwave (MW) radiation have been used in the modern world for many years. The rapidly increasing use of cellular phones in recent years has seen increased interest in relation to the possible health effects of exposure to RF/MW radiation. In 2011 a group of international experts organized by the IARC (International Agency for Research on Cancer in Lyon) concluded that ...

Journal: :International journal of radiation biology 2012
Göknur Güler Arin Tomruk Elcin Ozgur Duygu Sahin Aylin Sepici Nilgun Altan Nesrin Seyhan

PURPOSE We aimed to design a prolonged radiofrequency (RF) radiation exposure and investigate in an animal model, possible bio-effects of RF radiation on the ongoing developmental stages of children from conception to childhood. MATERIALS AND METHODS A total of 72 New Zealand female and male white rabbits aged one month were used. Females were exposed to RF radiation for 15 min/day during 7 d...

Journal: :Arhiv za higijenu rada i toksikologiju 2012
Ana Marija Marjanović Ivan Pavičić Ivančica Trošić

Over the years, due to rapid technological progress, radiation from man-made sources exceeded that of natural origin. There is a general concern regarding a growing number of appliances that use radiofrequency/ microwave (RF/MW) radiation with particular emphasis on mobile communication systems. Since nonthermal biological effects and mechanisms of RF/MW radiation are still uncertain, laborator...

Journal: :Lab on a chip 2010
Shi Cheng Zhigang Wu

Stretchable electronics is a revolutionary technology that will potentially create a world of radically different electronic devices and systems that open up an entirely new spectrum of possibilities. This article proposes a microfluidic based solution for stretchable radio frequency (RF) electronics, using hybrid integration of active circuits assembled on flex foils and liquid alloy passive s...

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