نتایج جستجو برای: mobile phone radiation

تعداد نتایج: 465709  

Journal: :مجله علوم اعصاب شفای خاتم 0
babak khodaie shefa neuroscience research center, khatam alanbia hospital, tehran, iran. mahmoud lotfinia a. shefa neuroscience research center, khatam alanbia hospital, tehran, iran. b. shahid beheshti university of medical sciences, tehran, iran. ahmad ali lotfinia shefa neuroscience research center, khatam alanbia hospital, tehran, iran. milad ahmadi a. shefa neuroscience research center, khatam alanbia hospital, tehran, iran. b. faculty of veterinary medicine, islamic azad university, karaj branch, karaj, iran.

reviews in many countries indicate that drivers often talk on mobile (cell) phones. studies have been done on possible effects of concurrent mobile phone use on driving performance. previous studies have found that phone talking could impairs performance on simulated or instrumented driving tasks, using such measures as reaction time, following distance, and situational awareness. most of these...

Journal: :International journal of occupational medicine and environmental health 1999
H Aniołczyk

Three mobile phone systems are used in Poland: analog, operated at the 450 MHz frequency range, and two digital systems operated at 900 MHz and 1800 MHz. The GSM--Global System for Mobile Communication meets all relevant requirements, and it is most widely used throughout the world. According to the mobile phone concept, the whole communication area is divided into sub-areas (cells) where base ...

Journal: :international journal of agricultural science, research and technology in extension and education systems 2014
agwu n. m. obasi r. o. oteh o. u anuakpado p. a

the place of information in addressing market access and participation limitation, which hinders farmer’s welfare and poverty reduction efforts in many developing countries, cannot be over-emphasized. this study therefore examined the use of mobile phone in the marketing of food crops among farming households in rural south east, nigeria. a multi stage sampling procedures was used in the select...

Journal: :Brazilian journal of otorhinolaryngology 2008
Aracy Pereira Silveira Balbani Jair Cortez Montovani

UNLABELLED Telecommunications systems emit radiofrequency, which is an invisible electromagnetic radiation. Mobile phones operate with microwaves (450900 MHz in the analog service, and 1,82,2 GHz in the digital service) very close to the users ear. The skin, inner ear, cochlear nerve and the temporal lobe surface absorb the radiofrequency energy. AIM literature review on the influence of cell...

2014
Michele Tizzoni Paolo Bajardi Adeline Decuyper Guillaume Kon Kam King Christian M. Schneider Vincent D. Blondel Zbigniew Smoreda Marta C. González Vittoria Colizza

Human mobility is a key component of large-scale spatial-transmission models of infectious diseases. Correctly modeling and quantifying human mobility is critical for improving epidemic control, but may be hindered by data incompleteness or unavailability. Here we explore the opportunity of using proxies for individual mobility to describe commuting flows and predict the diffusion of an influen...

2010
Rodolfo Saracci Jonathan Samet

Mobile phone (cell phone) use is increasing extraordinarily rapidly worldwide. There are now 4.6 billion mobile phone subscribers worldwide. In many lowand middle-income countries use of cell phones has made communications possible in vast areas lacking cable connections. Increasingly, in high-income countries, cell phones have replaced ‘land lines’ for personal telecommunications. Users of mob...

A Ali-Ghanbari E Kazemi, F Zal M Haghani R Ranjbaran S Sharifzadeh SMJ Mortazavi, 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. Metho...

Journal: :Military Medical and Pharmaceutical Journal of Serbia 2014

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