نتایج جستجو برای: rf radiation

تعداد نتایج: 269852  

Journal: :iranian journal of cancer prevention 0
mohammad houshyari department of radiation oncology, shohada hospital, shahid beheshti university of medical sciences, tehran, iran anya jafari department of radiation oncology, shohada hospital, shahid beheshti university of medical sciences, tehran, iran ahmad mostaar department of medical physics, faculty of medicine, shahid beheshti university of medical sciences, tehran, iran

physical agents such as ultraviolet or ionizing radiation and repetitive trauma have been related to the causation of cancer in humans. much less clear is the association between exposure to radiofrequency, such as radar and microwave radiation to the development of cancer. sporadic case reports and small series suggest that this type of radiation might lead to cancer or contribute to its evolu...

Journal: :Wireless Networks 1997
James C. Lin

Our knowledge on the biological effects of RF radiation has been increasing for many decades. It has become a focus of attention because of the accelerated use of RF radiation for wireless communication over the past few years. It is fairly well established that at sufficiently high power levels, RF and microwave energy can produce deleterious biological effects. Wireless communication systems ...

Journal: :Occupational medicine 2007
Ken K Karipidis Geza Benke Malcolm R Sim Timo Kauppinen Graham Giles

BACKGROUND Although the aetiology of glioma is poorly understood, the higher incidence in males has long suggested an occupational cause. AIM To investigate possible associations between occupational exposure to ionizing, ultraviolet (UV), radiofrequency (RF) and extremely low frequency (ELF) radiation and adult glioma risk. METHODS Case-control study using histologically confirmed cases of...

Objective(s): Nowadays, the electromagnetic field-emitting devices are used routinely in our lives. Controversial reports exist concerning the effects of mobile radiofrequency (RF) on different parts of the body, especially stress hormones. The main goal of the present work was to study the long-term effects of mobile RF900 MHz exposure with special focus on the adrenal gland pathophysiology an...

1999
Ken Joyner

THE DEBATE OVER POSSIBLE ADVERSE HEALTH EFFECTS FOLLOWING exposure to electromagnetic radiation (EMR) is very controversial and very much to the fore in Australia today. The Sir Harry Gibbs Inquiry into Community Needs and High Voltage Transmission Line Development in New South Wales and the debate on siting of the Richmond/Brunswick power line in Victoria have received a great deal of media at...

2011
Sun-Young Yoon Kyu-Tae Kim Seong Jin Jo A-Ri Cho Soon-Ik Jeon Hyung-Do Choi Kyu Han Kim Gun-Sik Park Jeong-Ki Pack Oh Sang Kwon Woong-Yang Park

Radiofrequency (RF) radiation does not transfer high energy to break the covalent bonds of macromolecules, but these low energy stimuli might be sufficient to induce molecular responses in a specific manner. We monitored the effect of 1,763 MHz RF radiation on cultured human dermal papilla cells (hDPCs) by evaluating changes in the expression of cytokines related to hair growth. The expression ...

2017
Lennart Hardell

In May 2011 the International Agency for Research on Cancer (IARC) evaluated cancer risks from radiofrequency (RF) radiation. Human epidemiological studies gave evidence of increased risk for glioma and acoustic neuroma. RF radiation was classified as Group 2B, a possible human carcinogen. Further epidemiological, animal and mechanistic studies have strengthened the association. In spite of thi...

2012
Bingcheng Jiang Jihua Nie Zhen Zhou Jie Zhang Jian Tong Yi Cao

The phenomenon of adaptive response (AR) in animal and human cells exposed to ionizing radiation is well documented in scientific literature. We have examined whether such AR could be induced in mice exposed to non-ionizing radiofrequency fields (RF) used for wireless communications. Mice were pre-exposed to 900 MHz RF at 120 µW/cm(2) power density for 4 hours/day for 1, 3, 5, 7 and 14 days and...

Journal: :Journal of Physics: Conference Series 2005

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...

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