نتایج جستجو برای: radiofrequency radiation

تعداد نتایج: 255192  

Journal: :Angewandte Chemie 2021

RASER (radiofrequency amplification by stimulated emission radiation) ist die Variante von Laser und Maser, im Hochfrequenzspektralbereich arbeitet. Eduard Y. Chekmenev et al. setzen in ihrer Zuschrift auf S. 26502 61-MHz-Protonen-RASER ein, um eine robuste, untergrundfreie Detektion biomolekularer NMR-Resonanzen zu demonstrieren, selbst den extremen Fällen vollständig protonierten Lösungsmitte...

2005
ALFONSO BALMORI

A bibliographical review on the possible effects of radiofrequency radiation (RFR) from wireless telecommunications on living organisms and its impact on amphibians is presented. The technical characteristics of this new technology and the scientific discoveries that are of interest in the study of their effects on wild fauna and amphibians are described. Electromagnetic pollution (in the micro...

2007
Sung Jin Park Cheol Ji Jae Young Kwon Kee-Yong Ha

STUDY DESIGN A prospective study. PURPOSE To determine the success rate and duration of relief of radiofrequency neurotomy for lumbar facet joint pain. OVERVIEW OF LITERATURE There is a lack of effective treatment for chronic low back pain. Radiofrequency denervation appears to be an emerging technology, with substantial variations in use. METHODS Fifty-eight patients underwent radiofrequ...

2014
SMJ Mortazavi M Gholampour M Haghani G Mortazavi AR Mortazavi

Mobile phones are two-way radios that emit electromagnetic radiation in microwave range. As the number of mobile phone users has reached 6 billion, the bioeffects of exposure to mobile phone radiation and mobile phone electromagnetic interference with electronic equipment have received more attention, globally. As self-monitoring of blood glucose can be a beneficial part of diabetes control, ho...

2001
Cindy Sage

The basis for decision-making about a relationship between electromagnetic fields radiofrequency and microwave radiation and adverse health effects at low intensity exposures rests on two key areas. The first is the “weight of the scientific evidence” pointing to a relationship betweeen RF/MW and illness. The scientific evidence needs to be reported to decision-makers in a format that is concis...

2016
Robert Lefkowitz

Magnetic resonance imaging (MRI) is the modality of choice for imaging desmoid tumors in most cases. MRI uses a series of complex, changing magnetic fields and low energy electromagnetic pulses (radiofrequency waves) to create images of the body. Unlike x-rays and CT scans, MRI emits no ionizing radiation. The standard MR imaging sequences that are used for soft tissue tumor imaging at my insti...

2016
Lennart Hardell Tarmo Koppel Michael Carlberg Mikko Ahonen Lena Hedendahl

The Stockholm Central Railway Station in Sweden was investigated for public radiofrequency (RF) radiation exposure. The exposimeter EME Spy 200 was used to collect the RF exposure data across the railway station. The exposimeter covers 20 different radiofrequency bands from 88 to 5,850 MHz. In total 1,669 data points were recorded. The median value for total exposure was 921 µW/m2 (or 0.092 µW/...

Journal: :iranian journal of public health 0
seyed mohammad javad mortazavi medical physics & medical engineering department, school of medicine, shiraz university of medical sciences, shiraz, iran ; the center for research on radiological sciences, school of allied medical sciences, shiraz university of medical sciences, shiraz, iran. shahram taeb naser dehghan

radar transmitters emit high-power radiofrequency radiation by creation of a high-voltage and high-frequency alternating electrical current.health effects of occupational exposure to military radar were investigated. visual reaction time was recorded with a simple blind computer-assisted-visual reaction time test. to assess the short-term memory, modified wechsler memory scale test was performe...

2013
R. M. Isa N. Fuad

The effects of mobile phone usage on human health are now becoming the subject of recent interest and study. Analysis and observations of the electroencephalogram (EEG) signals can provide valuable insight and thus improves the understanding of the radiofrequency (RF) radiation influence towards human brain. This paper evaluates the selected classifiers for the classification of brainwave datas...

Journal: :Medical hypotheses 2004
Robert C Kane

Recently disclosed epidemiological data indicate a dramatic increase in the incidence of autism spectrum disorders. Previously, the incidence of autism has been reported as 4-5 per 10000 children. The most recent evidence indicates an increased incidence of about 1 per 500 children. However, the etiology of autism is yet to be determined. The recently disclosed data suggest a possible correlati...

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