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Chhavi Raj Bhatt, Mary Redmayne, Baki Billah, Michael J Abramson, Geza Benke
The aim of this study was to assess environmental and personal radiofrequency-electromagnetic field (RF-EMF) exposures in kindergarten children. Ten children and 20 kindergartens in Melbourne, Australia participated in personal and environmental exposure measurements, respectively. Order statistics of RF-EMF exposures were computed for 16 frequency bands between 88 MHz and 5.8 GHz. Of the 16 bands, the three highest sources of environmental RF-EMF exposures were: Global System for Mobile Communications (GSM) 900 MHz downlink (82 mV/m); Universal Mobile Telecommunications System (UMTS) 2100MHz downlink (51 mV/m); and GSM 900 MHz uplink (45 mV/m)...
October 19, 2016: Journal of Exposure Science & Environmental Epidemiology
Yanjun Wang, Haoyu Li, Xingbin Liu, Yuhui Zhang, Ronghua Xie, Chunhui Huang, Jinhai Hu, Gang Deng
First, the measuring principle, the weight function, and the magnetic field of the novel downhole inserted electromagnetic flowmeter (EMF) are described. Second, the basic design of the EMF is described. Third, the dynamic experiments of two EMFs in oil-water two-phase flow are carried out. The experimental errors are analyzed in detail. The experimental results show that the maximum absolute value of the full-scale errors is better than 5%, the total flowrate is 5-60 m³/d, and the water-cut is higher than 60%...
October 14, 2016: Sensors
Mukund A Prabhu, B V Srinivas Prasad, Anees Thajudeen, Narayanan Namboodiri
INTRODUCTION: Bundle branch reentry as a mechanism of ventricular tachycardia (VT) in endomyocardial fibrosis (EMF) is not described. CASE REPORT: A 52-year-old woman with left ventricular (LV) EMF had VT needing cardioversion. She had mitral regurgitation and left bundle branch block, but no LV dilation or heart failure. During electrophysiological study, clinical VT could be easily induced, and it was confirmed to be bundle branch reentrant VT (BBRVT). She was treated with ablation of the right bundle branch...
September 2016: Indian Heart Journal
Mahim Saran, Sivasankaran Sivasubramonian
A 55-year-old female presented with worsening dyspnea secondary to left ventricular endomyocardial fibrosis (EMF). Obliteration of left ventricular apex and hypertrophied papillary muscle gave the classical appearance of a "doughnut" on left ventricular angiography. We present here a novel doughnut appearance of left ventricle on angiogram.
September 2016: Indian Heart Journal
Ahmed ElGuindy, Ahmed Afifi, Walid Simry, Soha Romeih, Magdi Yacoub
No abstract text is available yet for this article.
October 6, 2016: JACC. Cardiovascular Imaging
I Calvente, A Vázquez-Pérez, M F Fernández, M I Núñez, A Múñoz-Hoyos
The aims of this study were to characterize electromagnetic fields of radiofrequency (RF-EMF) levels generated in a Neonatal Medium Care Unit and to analyze RF-EMF levels inside unit's incubators. Spot and long-term measurements were made with a dosimeter. The spot measurement mean was 1.51±0.48V/m. Higher values were found in the proximity to the window and to the incubator evaluated. Mean field strength for the entire period of 17h was 0.81 (±0.07)V/m and the maximum value was 1.58V/m for long-term RF-EMF measurements in the incubator...
October 11, 2016: Environmental Research
Hui-Ling Liao, Yuan Chen, Rytas Vilgalys
Ectomycorrhizal fungi (EMF) represent one of the major guilds of symbiotic fungi associated with roots of forest trees, where they function to improve plant nutrition and fitness in exchange for plant carbon. Many groups of EMF exhibit preference or specificity for different plant host genera; a good example is the genus Suillus, which grows in association with the conifer family Pinaceae. We investigated genetics of EMF host-specificity by cross-inoculating basidiospores of five species of Suillus onto ten species of Pinus, and screened them for their ability to form ectomycorrhizae...
October 2016: PLoS Genetics
Christoph Boehmert, Peter Wiedemann, Rodney Croft
Many radiation health agencies communicate precautionary measures regarding the use of mobile communication devices, e.g. the use of a headset while talking on the phone. These precautionary messages have, however, been shown to unintentionally increase risk perceptions about radiofrequency electromagnetic fields (RF-EMFs). The current study tested two potential ways of amending precautionary messages in order to minimise this unintentional effect. Firstly, the messages' potential to be perceived as inconsistent and thereby raise suspicions was addressed; secondly, the effectiveness of the precautions was explained...
October 9, 2016: International Journal of Environmental Research and Public Health
Fatemeh Sanie-Jahromi, Iraj Saadat, Mostafa Saadat
AIMS: It has been shown that exposure to extremely-low frequency (˂300Hz) oscillating electromagnetic field (EMF) can affect gene expression. The effects of different exposure patterns of 50-Hz EMF and co-treatment of EMF plus cisplatin (CDDP) on mRNA levels of seven genes involved in DNA repair pathways (GADD45A, XRCC1, XRCC4, Ku70, Ku80, DNA-PKcs and LIG4) were evaluated. MAIN METHODS: Two 50-Hz EMF intensities (0.25 and 0.50mT), three exposure patterns (5min field-on/5min field-off, 15min field-on/15min field-off, 30min field-on continuously) and two cell lines (MCF-7 and SH-SY5Y) were used...
October 6, 2016: Life Sciences
G Kerimoğlu, T Mercantepe, H S Erol, A Turgut, H Kaya, S Çolakoğlu, E Odacı
The pathological effects of exposure to an electromagnetic field (EMF) during adolescence may be greater than those in adulthood. We investigated the effects of exposure to 900 MHz EMF during adolescence on male adult rats. Twenty-four 21-day-old male rats were divided into three equal groups: control (Cont-Gr), sham (Shm-Gr) and EMF-exposed (EMF-Gr). EMF-Gr rats were placed in an EMF exposure cage (Plexiglas cage) for 1 h/day between postnatal days 21 and 59 and exposed to 900 MHz EMF. Shm-Gr rats were placed inside the Plexiglas cage under the same conditions and for the same duration, but were not exposed to EMF...
August 11, 2016: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
Amélie Barthélémy, Amandine Mouchard, Marc Bouji, Kelly Blazy, Renaud Puigsegur, Anne-Sophie Villégier
The widespread mobile phone use raises concerns on the possible cerebral effects of radiofrequency electromagnetic fields (RF EMF). Reactive astrogliosis was reported in neuroanatomical structures of adaptive behaviors after a single RF EMF exposure at high specific absorption rate (SAR, 6 W/kg). Here, we aimed to assess if neuronal injury and functional impairments were related to high SAR-induced astrogliosis. In addition, the level of beta amyloid 1-40 (Aβ 1-40) peptide was explored as a possible toxicity marker...
September 30, 2016: Environmental Science and Pollution Research International
Tomoyuki Shirai, Jianqing Wang, Mayumi Kawabe, Kanako Wake, So-Ichi Watanabe, Satoru Takahashi, Osamu Fujiwara
In everyday life, people are exposed to radiofrequency (RF) electromagnetic fields (EMFs) with multiple frequencies. To evaluate the possible adverse effects of multifrequency RF EMFs, we performed an experiment in which pregnant rats and their delivered offspring were simultaneously exposed to eight different communication signal EMFs (two of 800 MHz band, two of 2 GHz band, one of 2.4 GHz band, two of 2.5 GHz band and one of 5.2 GHz band). Thirty six pregnant Sprague-Dawley (SD) 10-week-old rats were divided into three groups of 12 rats: one control (sham exposure) group and two experimental (low- and high-level RF EMF exposure) groups...
September 21, 2016: Journal of Radiation Research
Sarah P Loughran, Md Shahriar Al Hossain, Alan Bentvelzen, Mark Elwood, John Finnie, Joseph Horvat, Steve Iskra, Elena P Ivanova, Jim Manavis, Chathuranga Keerawella Mudiyanselage, Alireza Lajevardipour, Boris Martinac, Robert McIntosh, Raymond McKenzie, Mislav Mustapic, Yoshitaka Nakayama, Elena Pirogova, M Harunur Rashid, Nigel A Taylor, Nevena Todorova, Peter M Wiedemann, Robert Vink, Andrew Wood, Irene Yarovsky, Rodney J Croft
Mobile phone subscriptions continue to increase across the world, with the electromagnetic fields (EMF) emitted by these devices, as well as by related technologies such as Wi-Fi and smart meters, now ubiquitous. This increase in use and consequent exposure to mobile communication (MC)-related EMF has led to concern about possible health effects that could arise from this exposure. Although much research has been conducted since the introduction of these technologies, uncertainty about the impact on health remains...
2016: International Journal of Environmental Research and Public Health
Leena Korpinen, Herkko Pirkkalainen, Timo Heiskanen, Rauno Pääkkönen
Various guidelines for the protection of human beings against possible adverse effects resulting from exposure to electromagnetic fields (EMFs) have been published with a view towards continual improvement; therefore, decreasing exposure is an important research area. The aim of this study was to investigate the possibility of decreasing electric field exposure with arc flash rated personal protective equipment (PPE), which in this case was a set of coveralls, and to compare the measurement results to calculations using the helmet-mask measuring system...
2016: International Journal of Environmental Research and Public Health
Shin Ohtani, Akira Ushiyama, Machiko Maeda, Kenji Hattori, Naoki Kunugita, Jianqing Wang, Kazuyuki Ishii
We investigated the thermal effects of radiofrequency electromagnetic fields (RF-EMFs) on the variation in core temperature and gene expression of some stress markers in rats. Sprague-Dawley rats were exposed to 2.14 GHz wideband code division multiple access (W-CDMA) RF signals at a whole-body averaged specific absorption rate (WBA-SAR) of 4 W/kg, which causes behavioral disruption in laboratory animals, and 0.4 W/kg, which is the limit for the occupational exposure set by the International Commission on Non-Ionizing Radiation Protection guideline...
2016: Journal of Toxicological Sciences
Katharina Roser, Anna Schoeni, Martin Röösli
The aim of this study is to prospectively investigate whether exposure to radiofrequency electromagnetic fields (RF-EMF) emitted by mobile phones and other wireless communication devices is related to behavioural problems or concentration capacity in adolescents. The HERMES (Health Effects Related to Mobile phonE use in adolescentS) study sample consisted of 439 Swiss adolescents aged 12-17 years. Behavioural problems were assessed using the Strengths and Difficulties Questionnaire (SDQ), concentration capacity of the adolescents was measured by means of a standardized computerized cognitive test named FAKT...
September 17, 2016: International Journal of Hygiene and Environmental Health
Christina L Luong, Darby J S Thompson, Kenneth G Gin, John Jue, Parvathy Nair, Pui-Kee Lee, Michael Y Tsang, Marion E Barnes, Pamela Colley, Teresa S M Tsang
Atrial volumes indexed to body surface area (AVI) are robust predictors of nonvalvular atrial fibrillation (AF) recurrence after direct current cardioversion (DCCV). The incremental value of atrial emptying fraction (EmF) compared with atrial volumes as a predictor for recurrent AF after DCCV has not been evaluated. We sought to compare the predictive ability of baseline left atrial (LA) EmF, right atrial (RA) EmF, LAVI, and RAVI for post-DCCV AF recurrence at 6 months. The first 95 patients enrolled in the AF Clinic Registry with adequate echocardiogram imaging constituted the study cohort...
August 13, 2016: American Journal of Cardiology
Marcella Reale, Chiara D Angelo, Erica Costantini, Ada Maria Tata, Francesca Regen, Julian Hellmann-Regen
Exposure to environmental extremely low-frequency electromagnetic fields (ELF-EMF) in everyday life is increasing and it is a matter of great debate whether exposure to ELF-EMF can be harmful to human health. The neuropathology and symptoms of neurodegenerative disease depends on factors involving other than genetic predispositions, such as environmental exposure to disease-related risk factors. Research focusing on a possible contribution of ELF-EMF to cell injury and to the development of neurodegenerative disorders is characterized by conflicting data from epidemiological and animal studies...
September 20, 2016: CNS & Neurological Disorders Drug Targets
Hadi Ansarihadipour, Mohamadreza Bayatiani
BACKGROUND: Electromagnetic fields (EMF) are associated with oxidative stress, which is in turn associated with reactive oxygen species (ROS), anemia, and hypoxia. OBJECTIVES: This study focused on the synergistic effects of lead ions and EMF on oxidative modifications in hemoglobin (Hb) and plasma proteins. PATIENTS AND METHODS: In this experimental study, the blood samples were obtained from age- and sex-matched healthy subjects at Arak University of Medical Sciences, Arak, Iran...
July 2016: Iranian Red Crescent Medical Journal
Gökçen Kerimoğlu, Ali Aslan, Orhan Baş, Serdar Çolakoğlu, Ersan Odacı
Cell phones, an indispensable element of daily life, are today used at almost addictive levels by adolescents. Adolescents are therefore becoming increasingly exposed to the effect of the electromagnetic field (EMF) emitted by cell phones. The purpose of this study was to investigate the effect of exposure to a 900-MHz EMF throughout adolescence on the lumbar spinal cord using histopathological, immunohistochemical and biochemical techniques. Twenty-four Sprague Dawley (28.3-43.9g) aged 21days were included in the study...
September 17, 2016: Journal of Chemical Neuroanatomy
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