Bacterial Inactivation by Solar Ultraviolet Radiation Compared with Sensitivity to 254 nm Radiation
نویسندگان
چکیده
منابع مشابه
Quantum yields for inactivation of tobacco mosaic virus nucleic acid by ultraviolet radiation (254 nm.).
The quantum yield, under non-photoreactivating conditions, for inactivation of tobacco mosaic virus RNA by ultraviolet radiation (254 nm.) is independent of the RNA concentration but varies appreciably with the ionic strength of the irradiation solvent, being approximately three times greater in water than in o-I M-potassium phosphate buffer. Photoreactivation of inactivated tobacco mosaic viru...
متن کاملSensitivity of oral bacteria to 254 nm ultraviolet light.
AIM To explore the sensitivity of bacteria commonly found in root canals to 254 nm ultraviolet (UV) light, either as individual cells or as participants of a bacterial multilayer. METHODOLOGY The sensitivity of oral bacteria, as individual cells, to UV light was tested by subjecting plates streaked with bacteria to 254 nm UV, at a fluence of 1-20 mJ cm(-2). An experimental model was designed ...
متن کاملA Study of Bacterial Sensitivity to Ultraviolet Radiation'
Previous studies ( Bachem and Dushkin, 1932) on the reactions of bacteria to ultraviolet light have demonstrated that these organisms re spond with different sensitivities according to various experimental con ditions. Variables, such as the wave length utilized, the age of the bac terial culture, and the temperature at which the organisms are maintained will all be reflected in the bacterial s...
متن کاملSolar and Ultraviolet Radiation
Terrestrial life is dependent on radiant energy from the sun. Solar radiation is largely optical radiation [radiant energy within a broad region of the electromagnetic spectrum that includes ultraviolet (UV), visible (light) and infrared radiation], although both shorter wavelength (ionizing) and longer wavelength (microwaves and radiofrequency) radiation is present. The wavelength of UV radiat...
متن کاملDiffuse solar ultraviolet radiation.
The solar UV exposure to the eyes of humans is due to the direct and diffuse components of solar radiation. The direct ocular UV exposures to the eyes are reduced due to the natural aversion of the majority of people from looking directly at the sun. The diffuse UV is incident from all directions and as a result, it is more difficult to minimise the ocular exposure to this component of the sola...
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ژورنال
عنوان ژورنال: Photochemistry and Photobiology
سال: 2009
ISSN: 0031-8655,1751-1097
DOI: 10.1111/j.1751-1097.2009.00586.x