Adenoviruses are resistant to monochromatic, low-pressure (LP) UV disinfection--but have been shown to be susceptible to inactivation by polychromatic, medium-pressure (MP) UV--when assayed using cell culture infectivity. One possible explanation for the difference between UV lamp types is that the additional UV wavelengths emitted by MP UV enable it to cause greater damage to viral proteins th...

The purpose of this study was to investigate the immunobiological characteristics of the tumor-specific cell surface antigen expressed by the UV-induced murine fibrosarcoma, UV-2240. UV-2240 is classified as a regressor UV tumor because it is immunologically rejected by normal syngeneic mice but grows in immunocompromised or UV-irradiated hosts. The strong tumor-specific rejection antigen expre...

Climate models predict an increase in ultraviolet (UV) radiation and a reduction in precipitation in the Mediterranean region in the coming decades. High levels of UV radiation and water shortage can both cause photo-oxidative stress in plants. The aim of this study was to investigate the effects of enhanced UV radiation and its interaction with low water availability on seedling performance, b...

Water samples from 3 indoor swimming pool facilities were tested to evaluate UV-induced effects on swimming pool water chemistry. Concentration change of several DBPs was investigated in experiments including medium pressure UV treatment with and without chlorine and post-UV chlorination. Post-UV chlorine consumption increased, dose-dependently, with UV treatment dose. A clear absence of trihal...

The benzotrialzol organic UV filters, such as UV-320 (CAS# 384671-7), UV-326 (CAS# 3896-11-5), UV-327 (CAS# 3864-99-1), and UV-328 (CAS# 25973-55-1), were detected in marine organisms collected from the Ariake Sea, western Japan. The high concentrations of UV filters were found in oysters and tidal flat species, at the concentrations of several ten ng/g (wet wt. basis). It is interesting to kno...

We investigate the dependence of the total-infrared (TIR) to UV luminosity ratio method for calculating the UV dust attenuation A(UV ) from the age of the underlying stellar populations by using a library of spectral energy distributions for galaxies with different star formation histories. Our analysis confirms that the TIR/UV vs. A(UV ) relation varies significantly with the age of the underl...

Liquid cultures of the terrestrial cyanobacterium Nostoc commune derived from field material were treated with artificial UV-B and UV-A irradiation. We studied the induction of various pigments which are though to provide protection against damaging UV-B irradiation. First, UV-B irradiation induced an increase in carotenoids, especially echinenone and myxoxanthophyll, but did not influence prod...

Human beings always suffer from serious risk of exposure to ultraviolet (UV) rays in general as well as in work environments but the health effects of UV are not yet fully understood. To enable fine analysis of the biological effects of UV at any given wavelength, we developed an apparatus that can experimentally irradiate cultured mammalian cells with monochromatic UV rays at any given wavelen...

background: volatile organic compounds (vocs) are among the main air pollutants which have destructive effects on the environment and human health. considering the carcinogenic effects of some of these compounds including benzene, how to control and limit them is considered an important issue in environmental research. the aim of this study was to evaluate the use of the combined ultraviolet (u...