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Filters: tag: Transmission Electron Microscopy Clear

Nonionizing Electromagnetic Field: A Promising Alternative for Growing Control Yeast.

Research RF Safe Research Library Jan 1, 2021

This laboratory study examined radiofrequency EMF exposure between 1 and 5.9 GHz as a method to control yeast growth relevant to food spoilage. The authors report reduced yeast viability at all tested frequencies and note that antenna-to-sample distance affected the outcome. Electron microscopy findings are described…

Evaluation of the neuroprotective effects of Vitamin E on the rat substantia nigra neural cells exposed to electromagnetic field: An ultrastructural study.

Research RF Safe Research Library Jan 1, 2021

This rat study exposed animals to a 50 Hz, 3 mT electromagnetic field and assessed oxidative stress markers and substantia nigra ultrastructure. EMF exposure was associated with higher lipid peroxidation (MDA), lower SOD activity, and TEM-detected changes in nucleus/nuclear membrane and myelin sheath. Vitamin E…

The effect of a high frequency electromagnetic field in the microwave range on red blood cells.

Research RF Safe Research Library Jan 1, 2017

An in vitro study examined red blood cells exposed to an 18 GHz electromagnetic field and assessed uptake of nanospheres. The authors report that EMF exposure enabled nanosphere uptake into RBCs, with different translocation behavior for 23.5 nm versus 46.3 nm particles. Uptake was reported to increase with higher…

Nanocrystalline graphite films nucleation by the radio frequency bias pretreatment.

Research RF Safe Research Library Jan 1, 2011

This paper describes an engineering method for nucleating nanocrystalline carbon films on monocrystalline silicon using a combination of microwave and radio frequency plasma-assisted chemical vapor deposition. The approach is demonstrated via deposition of nanocrystalline diamond after a seeding step and growth of…

Noninvasive radiofrequency field-induced hyperthermic cytotoxicity in human cancer cells using cetuximab-targeted gold nanoparticles.

Research RF Safe Research Library Jan 1, 2008

This in vitro study reports that shortwave (MHz-range) RF exposure can induce strong cytotoxicity in EGFR-overexpressing human cancer cells when those cells have internalized cetuximab-targeted gold nanoparticles. Control nanoparticles showed minimal uptake and substantially lower cytotoxicity under RF exposure. An…

Ultrastructural alterations and occurrence of apoptosis in developing follicles exposed to low frequency electromagnetic field in rat ovary.

Research RF Safe Research Library Jan 1, 2007

This animal study examined rat ovaries after chronic exposure to a 3 mT low-frequency electromagnetic field for 4 hours per day over 4 months. Using TEM and TUNEL, the authors report ultrastructural alterations in oocytes and more frequent apoptosis-associated changes in granulosa and corona radiata cells versus…

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