نتایج جستجو برای: gsm mobile phone

تعداد نتایج: 234214  

Journal: :International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering 2014

Journal: :Mutation research 2010
Evangelia D Chavdoula Dimitris J Panagopoulos Lukas H Margaritis

In the present study we used a 6-min daily exposure of dipteran flies, Drosophila melanogaster, to GSM-900MHz (Global System for Mobile Telecommunications) mobile phone electromagnetic radiation (EMR), to compare the effects between the continuous and four different intermittent exposures of 6min total duration, and also to test whether intermittent exposure provides any cumulative effects on t...

Journal: :تحقیقات نظام سلامت 0
مریم عمیدی مظاهری استادیار، آموزش بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران مجتبی کرباسی مربی، زبان انگلیسی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران محمدشهرام محتشمی کارشناس مسؤول بهداشت محیط، مرکز بهداشت شماره 1، اصفهان، ایران

background: mobile phone has become extremely popular and widely used all over the world. now a day, consumers around the world can purchase a single product that utility as a mobile phone, camera, camcorder, calculator, game console, text-messaging device, mp3 player, alarm clock, web browser and email device. the purpose of the present study was to explore self-reported use of various feature...

Journal: :مجله دانشکده پزشکی اصفهان 0
داریوش شهبازی گهرویی استاد، گروه فیزیک پزشکی، دانشکده ی پزشکی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران

the effects of mobile phone exposure on humans, due to its potential health hazards, have become the focus of interest since many years ago. the effect of global system for mobile communications (gsm 900 mhz) on growth and proliferation rate of mesenchymal stem cells was assessed at the different distances and intensities of radiation. a subscriber identity module (sim) card was inserted to thi...

2014
Ramya

In our surroundings, we can see a number of people motor challenged. The motor disabled users won’t be able to access the electronic gadgets of their home without external help. As the technology improves, the way of leading life is becoming automated. This paper proposes the use of this technical advancement for the better life of motor disabled users, i.e., with the use of a touch screen base...

Journal: :Vojnosanitetski pregled 2016
Raimondas Buckus Birute Strukcinskiene Juozas Raistenskis Rimantas Stukas

BACKGROUND/AIM Electromagnetic field exposure is the one of the most important physical agents that actively affects live organisms and environment. Active use of mobile phones influences the increase of electromagnetic field radiation. The aim of the study was to measure and assess the electric field strength caused by mobile phones to the human head. METHODS In this paper the software "COMS...

2011
Abul Azad

Open base transceiver station (BTS) project was originally developed using open-source Unix/Linux applications in conjunction with Universal Software Radio Peripheral (USRP) to implement GSM (Global System for Mobile Communications) air interface supporting GSM handsets at much lower cost than commercial carrier BTS systems. This paper emphasizes concepts and methodology of low cost Open BTS im...

Introduction: In recent years, the rapidly increasing use of mobile phone operating nearby the human head has caused public concern for its effects on human health. The FDTD methodology is widely used for calculation of the effects of electromagnetic fields on human body. Methods and Materials: In this paper, first a dual band patch antenna structure (GSM-900 and DCS 1800), which is located i...

2002
Claudia Linnhoff-Popien Axel Küpper Michael Schiffers Thomas Buchholz

This paper describes how location-based push-services can be realized on mobile devices. Such services allow to automatically deliver locationrelevant information to mobile users, thus enabling new application scenarios. The paper presents examples of these new application scenarios and introduces a generic software architecture, which allows to integrate arbitrary ways of tracking the user’s l...

M Sheikhi, N Shokrpour P Mokarram S M J Mortazavi, S Saeb

Background: Over the past several years, the rapidly increasing use of mobile phones has raised global concerns about the biological effects of exposure to radiofrequency (RF) radiation. Numerous studies have shown that exposure to electromagnetic fields (EMFs) can be associated with effects on the nervous, endocrine, immune, cardiovascular, hematopoietic and ocular systems. In spite of genetic...

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