Earth Was Once Exposed To UV-C; UV In The Photo-Environment

Serratia Exposed to UV Radiation Show Increase In Survival Capabilities

The recF, recO, and recR genes were originally identified as those affecting the RecF pathway ofrecombination in Escherichia coli cells. Several lines of evidence suggest that the recF, recO, andrecR genes function at the same step of recombination and postreplication repair. In this work,we report that null mutations in recF, recO, or recR greatly reduce UV-radiation mutagenesis<lb...

Survival, the hormonal stress response and UV-B avoidance in Cascades Frog tadpoles ( Rana cascadae ) exposed to UV-B radiation

1. Despite the increasing occurrence of global environmental changes, including increases in ultraviolet-B radiation (UV-B; 280–320 nm), little is known about how factors such as UV-B affect animals physiologically. Amphibians provide a good model for examining physiological effects of UV-B exposure because studies documenting both lethal and sub-lethal effects have been completed on many speci...

UV-Light Exposed Prion Protein Fails to Form Amyloid Fibrils

Amyloid fibril formation involves three steps; structural perturbation, nucleation and elongation. We have investigated amyloidogenesis using prion protein as a model system and UV-light as a structural perturbant. We find that UV-exposed prion protein fails to form amyloid fibrils. Interestingly, if provided with pre-formed fibrils as seeds, UV-exposed prion protein formed amyloid fibrils albe...

Investigation of the Potential UV-A Enhanced Toxicity and the Potential Inhibition of Catalase by Phthalate Exposed to UV-A

Solar Water Disinfection (SODIS) is a simple process used in developing countries to improve the quality of bacteria-contaminated drinking water. A previous study found that phthalate, an aromatic compound released by polyethylene terephthalate (PET) bottles upon UV-A irradiation, enhanced the germicidal activity of SODIS. In the current study, two possible mechanisms behind this observation we...

Aqueous Quinoline Treatment with Iron/ Copper Activated UV/ Persulfate Process in a Falling Film Photo-Reactor