NO2 Profile Retrieval using airborne multi axis UV-visible skylight absorption measurements over central Europe M. Bruns, S. A. Buehler, J. P. Burrows, A. Richter, A. Rozanov, P. Wang, K.-P. Heue, U. Platt, I. Pundt, and T. Wagner Institute of Environmental Physics, University of Bremen, P.O. Box 33 04 40, 28359 Bremen, Germany Institute of Environmental Physics, University of Heidelberg, Im Ne...

In plants subjected to UV-B radiation, responses are activated that minimize damage caused by UV-B. The bZIP transcription factor ELONGATED HYPOCOTYL5 (HY5) acts downstream of the UV-B photoreceptor UV RESISTANCE LOCUS8 (UVR8) and promotes UV-B-induced photomorphogenesis and acclimation. Expression of HY5 is induced by UV-B; however, the transcription factor(s) that regulate HY5 transcription i...

Studies were conducted on three herbaceous plant species growing in naturally high solar UV environments in the subalpine of Mauna Kea, Hawaii, USA, to determine if diurnal changes in epidermal UV transmittance (T(UV)) occur in these species, and to test whether manipulation of the solar radiation regime could alter these diurnal patterns. Additional field studies were conducted at Logan, Utah,...

Ultraviolet (UV) irradiation is a common way to disinfect drinking water, but some viruses are very resistant to UV. Drinking water was disinfected with UV after spiking with MS2 and 18 different coliphages isolated from municipal wastewater effluent. In addition, some coliphages were disinfected with combined treatment of chlorine/UV or vice versa with UV/chlorine. A UV-dose of 22 mWs/cm2 caus...

A UV-damaged DNA binding protein (UV-DDB) is the major source of UV-damaged DNA binding activity in mammalian cell extracts. This activity is defective in at least some xeroderma pigmentosum group E (XP-E) patients; microinjection of the UV-DDB protein into their fibroblasts corrects nucleotide excision repair (NER). In an in vitro reconstituted NER system, small amounts of UV-DDB stimulate rep...

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...