نتایج جستجو برای: rf radiation
تعداد نتایج: 269852 فیلتر نتایج به سال:
OBJECTIVES Several studies have been carried out to investigate the effect of various nanoparticles exposed to radiofrequency (RF) waves on cancerous tissues. In this study, a colon carcinoma tumor model was irradiated by RF in the presence of gold-gold sulfide (GGS) nanoshells. MATERIALS AND METHODS Synthesis and characterization of GGS nanoshells were initially performed. CT26 cells were su...
BACKGROUND The rapidly increasing use of mobile phones has led to public concerns about possible health effects of these popular communication devices. This study is an attempt to investigate the effects of radiofrequency (RF) radiation produced by GSM mobile phones on the insulin release in rats. METHODS Forty two female adult Sprague Dawley rats were randomly divided into 4 groups. Group1 w...
Mobile phones and Wi-Fi radiofrequency radiation are among the main sources of the exposure of the general population to radiofrequency electromagnetic fields (RF-EMF). Previous studies have shown that exposure of microorganisms to RF-EMFs can be associated with a wide spectrum of changes ranged from the modified bacterial growth to the alterations of the pattern of antibiotic resistance. Our l...
We have demonstrated an output coupler for Bose condensed atoms in a magnetic trap. Short pulses of rf radiation were used to create Bose condensates in a superposition of trapped and untrapped hyperfine states. The fraction of out-coupled atoms was adjusted between 0% and 100% by varying the amplitude of the rf radiation. This configuration produces output pulses of coherent atoms and can be r...
Although exposure to electromagnetic radiation in radiofrequency range has caused a great deal of concern globally, radiofrequency radiation has many critical applications in both telecommunication and non-communication fields. The induction of adaptive response phenomena by exposure to radiofrequency radiation as either increased resistance to a subsequent dose of ionizing radiation or resista...
In the present study,we examined the effects of exposure to radiofrequency(RF)with intermediate frequency (IF) range at 40 kHz on immune response using a stress-induced immune suppression method and on concentrations of serum corticosterone in mice. We used antibody-forming cell (AFC) assay to evaluate the effects of RF radiation at 40 kHz on immune response in mice. The number of plaques forme...
Singleand double-stranded (RF) DNA of page <?X-174 were 60Co-gamma irradiated. Depen dence of radiosensitivity on the concentration of cysteamine and cystamine was measured. Radio resistance of DNA in vivo (phage particles) as well as of DNA in vitro (infectious DNA) increase between 10-4 and 10—1 M of superprotective agents. The same relationship is observed when the DNA is in the dry and in...
The paper analyzes the electromagnetic (EM) radiofrequency (RF) radiation hazards onboard a ship arising from shipboard radiocommunication and navigation equipment. EM field effect on personnel and equipment can be harmful if field levels exceed the threshold values. These fields need to be controlled for proper protection. Ships are equipped with lots of EM RF radiation sources with different ...
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