نتایج جستجو برای: radiofrequency radiation

تعداد نتایج: 255192  

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
s m j mortazavi 1medical physics and medical engineering department, school of medicine, shiraz university of medical sciences, shiraz, z mostafavi-pour biochemistry department, medical school, shiraz university of medicinal sciences, shiraz, ir iran 3recombinant protein lسازمان های دیگر: 3recombinant protein laboratory, school of advanced medical sciences and technologies, shiraz university

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: :Epidemiology 2001
A Stang G Anastassiou W Ahrens K Bromen N Bornfeld K H Jöckel

There are few epidemiologic studies dealing with electromagnetic radiation and uveal melanoma. The majority of these studies are exploratory and are based on job and industry titles only. We conducted a hospital-based and population-based case-control study of uveal melanoma and occupational exposures to different sources of electromagnetic radiation, including radiofrequency radiation. We then...

ژورنال: سنجش و ایمنی پرتو 2020

Background: The widespread use of cell phones has led to an increase in concern about the effect of radiofrequency radiation on the physiology of the human body. This study was conducted to determine the different reaction temperatures of different brain tissue in exposure to mobile radiofrequency waves. Method: This was an experimental study. The cowchr('39')s brain tissue was examined in a c...

A. R. Mehdizadeh G. Namdari M. Motamedifar, M. Taheri S. M. J. Mortazavi

Background: Pre-exposure to radiofrequency radiations of mobile phones would significantly increase the survival rate of exposed animals compared to those exposed to a lethal dose of gamma radiation alone. Stimulation of the immune system is believed to be a key mechanism for the induction of this phenomenon, the so-called “adaptive response.” The immune system protects organisms against in...

2017

Submit Manuscript | http://medcraveonline.com Abbreviations: EMFs: Electromagnetic Fields; MWR: Microwave Radiation; NIR: Non-Ionizing Radiation; RF-EMW: Radiofrequency Electromagnetic Waves; RF: Radiofrequency; EMW: Electromagnetic Wave; SNS: Sympathetic Nervous System; PNS: Parasympathetic Nervous System; PRA: Plasma Renin Activity; AMI: Acute Myocardial Infarction; SNAP: N-AcetylSnitrosoDl-P...

Journal: :Circulation 1998
P Kovoor M Ricciardello L Collins J B Uther D L Ross

BACKGROUND Radiofrequency ablation may be associated with prolonged fluoroscopy times. Previous studies have calculated radiation risks by measuring the radiation dose at a limited number (6) of body sites. This is an inherently inaccurate measure. Our study aimed to quantify more precisely patient-related radiation risks associated with radiofrequency ablation for supraventricular tachycardia....

Journal: :journal of biomedical physics and engineering 0
s. m. j. mortazavi professor of medical physics, medical physics department, school of medicine, shiraz university of medical sciences, shiraz, iran m. motamedifar associate professor of microbiology, department of bacteriology, school of medicine and shiraz hiv/aids research center (sharc), shiraz university of medical sciences, shiraz, iran a. r. mehdizadeh assistant professor of medical physics, medical physics department, school of medicine, shiraz university of medical sciences, shiraz, iran g. namdari student research committee, school of medicine, shiraz university of medical sciences, shiraz, iran m. taheri lecturer of microbiology, laboratory sciences department, school of allied medical sciences, shiraz university of medical sciences, shiraz, iran

background: pre-exposure to radiofrequency radiations of mobile phones would significantly increase the survival rate of exposed animals compared to those exposed to a lethal dose of gamma radiation alone. stimulation of the immune system is believed to be a key mechanism for the induction of this phenomenon, the so-called “adaptive response.” the immune system protects organisms against infect...

Journal: :Dose-response : a publication of International Hormesis Society 2014
S M J Mortazavi M Motamedifar G Namdari M Taheri A R Mortazavi N Shokrpour

Substantial evidence indicates that adaptive response induced by low doses of ionizing radiation can result in resistance to the damage caused by a subsequently high-dose radiation or cause cross-resistance to other non-radiation stressors. Adaptive response contradicts the linear-non-threshold (LNT) dose-response model for ionizing radiation. We have previously reported that exposure of labora...

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...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید