Germicidal effectsby UV radiation
نویسندگان
چکیده
منابع مشابه
Effectiveness of germicidal UV radiation for reducing fungal contamination within air-handling units.
Levels of fungi growing on insulation within air-handling units (AHUs) in an office building and levels of airborne fungi within AHUs were measured before the use of germicidal UV light and again after 4 months of operation. The fungal levels following UV operation were significantly lower than the levels in control AHUs.
متن کاملNon-UV germicidal activity of fresh TiO2 and Ag/TiO2.
Fresh TiO2 was found to possess a strong germicidal activity even without UV irradiation. Live Yeast (Saccharomyces cerevisiae) cells in contact with fresh TiO2 were found deformed and dead after 15 min contact. The cause of germicidal activity was discussed from the observed cell deformation, lysis and increased absorption at 1680 cm(-1) in FT-IR spectra of the affected cells, which proved the...
متن کاملSurface disinfection by exposure to germicidal UV light.
The present study was aimed to design a simple model to check efficacy of germicidal UV tube, to standardise the position, distance and time for UV light and also to find out its efficacy against medically important bacteria, the bacterial spores and fungi. The microbial cultures tested included gram positive and gram negative bacteria, bacterial spores and fungal spores. The microbes streaked ...
متن کاملComparison of UV-Induced Inactivation and RNA Damage in MS2 Phage across the Germicidal UV Spectrum.
Polychromatic UV irradiation is a common method of pathogen inactivation in the water treatment industry. To improve its disinfection efficacy, more information on the mechanisms of UV inactivation on microorganisms at wavelengths throughout the germicidal UV spectrum, particularly at below 240 nm, is necessary. This work examined UV inactivation of bacteriophage MS2, a common surrogate for ent...
متن کاملDemonstration and evaluation of germicidal UV-LEDs for point-of-use water disinfection.
Ultraviolet (UV) irradiation is a common disinfection option for water treatment in the developed world. There are a few systems installed in developing countries for point-of-use treatment, but the low-pressure mercury lamps currently used as the UV irradiation source have a number of sustainability issues including a fragile envelope, a lifetime of approximately one year, and they contain mer...
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ژورنال
عنوان ژورنال: Journal of the Illuminating Engineering Institute of Japan
سال: 1992
ISSN: 0019-2341,1349-838X,2185-1506
DOI: 10.2150/jieij1980.76.7_361