نتایج جستجو برای: electromagnetic fields emfs

تعداد نتایج: 307315  

2016
Chuan Sun Xiaoxia Wei Yue Fei Liling Su Xinyuan Zhao Guangdi Chen Zhengping Xu

Radiofrequency electromagnetic fields (RF-EMFs) have been classified by the International Agency for Research on Cancer as possible carcinogens to humans; however, this conclusion is based on limited epidemiological findings and lacks solid support from experimental studies. In particular, there are no consistent data regarding the genotoxicity of RF-EMFs. Ataxia telangiectasia mutated (ATM) is...

2016
Ju Hwan Kim Yang Hoon Huh Hak Rim Kim

The extensive use of wireless mobile phones and associated communication devices has led to increasing public concern about potential biological health-related effects of the exposure to electromagnetic fields (EMFs). EMFs emitted by a mobile phone have been suggested to influence neuronal functions in the brain and affect behavior. However, the affects and phenotype of EMFs exposure are unclea...

Journal: :Pediatric annals 2017
Tayaba Miah Deepak Kamat

There has been an exponential increase in the use of electronic devices over the past few decades. This has led to increased exposure to electromagnetic fields (EMF). Electric fields result from differences in voltage, whereas magnetic fields result from the flow of electric current. Higher-frequency waves of EMF have more energy than lower-frequency waves, and thus generally tend to be more ha...

Journal: :Applied sciences 2021

Periodontal regeneration is a complex goal, which commonly pursued with combination of surgical techniques, biomaterials, and bioactive compounds. One such compound enamel matrix derivative (EMD), medical substance that extracted from porcine tooth germs contains several protein fractions BMP- TGF-β-like action. Activation TGF-β signaling required for EMD activity on cells tissues, growing body...

Journal: :The Western journal of medicine 2000
E van Wijngaarden D A Savitz R C Kleckner J Cai D Loomis

OBJECTIVES This nested case-control study examines mortality from suicide in relation to estimated exposure to extremely low frequency electromagnetic fields (EMFs) in a cohort of 138,905 male electric utility workers. METHODS Case-control sampling included 536 deaths from suicide and 5348 eligible controls. Exposure was classified based on work in the most common jobs with increased exposure...

Aghdas Banaei, Ali Akbar Moosavi Movahedi, H Naghavi Hedayatollah Ghorchian, R Amjadi R Hosseinzadeh Reza Faraji Dana, S.M. Saviz

The effects of electromagnetic fields (EMFs) radiation at the frequency of 940 MHz on the structure and function of human adult and fetal hemoglobin (HbA and HbF) were studied. After extraction and purification of HbA and HbF, the oxygen absorption values for exposed and unexposed HbA and HbF to EMF were compared. The slope of oxygen absorption curve for exposed HbA was increased while that for...

Sh Babri N Khalaji

The interaction of electromagnetic fields (EMF) with living organisms presents an increasing source of interest nowadays. There are reports on the influence of EMFs on memory. In this study, the effect of a 50 Hz, 50G EMF was investigated on passive avoidance learning in male rats. For this purpose, male Wistar rats (n = 50, 6-8 weeks, 250-300 g) were randomly divided into five groups. Control ...

Sh Babri N Khalaji

The interaction of electromagnetic fields (EMF) with living organisms presents an increasing source of interest nowadays. There are reports on the influence of EMFs on memory. In this study, the effect of a 50 Hz, 50G EMF was investigated on passive avoidance learning in male rats. For this purpose, male Wistar rats (n = 50, 6-8 weeks, 250-300 g) were randomly divided into five groups. Control ...

Journal: :basic and clinical neuroscience 0
ahmad ali ghanbari department of anatomy, school of medicine, tabriz university of medical sciences, tabriz, iran. kobra shabani department of anatomy, school of medicine, tabriz university of medical sciences, tabriz, iran. daryoush mohammad nejad drug applied research center, medical research and development complex, department of anatomy, tabriz university of medical sciences, tabriz, iran.

introduction: electromagnetic fields (emfs) can influence the biological system by the formation of free radicals in cells. the emfs are able to deteriorate defense system against free radicals that leads to oxidative stress (os). lipid peroxidation process (lpo) is an index of oxidative stress, and the malandialdehyde (mda) is the final product of lpo. vitamin e is the most important antioxida...

Journal: :Indian journal of biochemistry & biophysics 2013
Malka N Halgamuge

Electromagnetic fields (EMFs) can increase free radicals, activate the stress response and alter enzyme reactions. Intracellular signalling is mediated by free radicals and enzyme kinetics is affected by radical pair recombination rates. The magnetic field component of an external EMF can delay the "recombination rate" of free radical pairs. Magnetic fields thus increase radical life-times in b...

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